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spi: Updates for v3.14
A respun version of the merges for the pull request previously sent with
a few additional fixes. The last two merges were fixed up by hand since
the branches have moved on and currently have the prior merge in them.
Quite a busy release for the SPI subsystem, mostly in cleanups big and
small scattered through the stack rather than anything else:
- New driver for the Broadcom BC63xx HSSPI controller.
- Fix duplicate device registration for ACPI.
- Conversion of s3c64xx to DMAEngine (this pulls in platform and DMA
changes upon which the transiton depends).
- Some small optimisations to reduce the amount of time we hold locks
in the datapath, eliminate some redundant checks and the size of a
spi_transfer.
- Lots of fixes, cleanups and general enhancements to drivers,
especially the rspi and Atmel drivers.
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Merge tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A respun version of the merges for the pull request previously sent
with a few additional fixes. The last two merges were fixed up by
hand since the branches have moved on and currently have the prior
merge in them.
Quite a busy release for the SPI subsystem, mostly in cleanups big and
small scattered through the stack rather than anything else:
- New driver for the Broadcom BC63xx HSSPI controller
- Fix duplicate device registration for ACPI
- Conversion of s3c64xx to DMAEngine (this pulls in platform and DMA
changes upon which the transiton depends)
- Some small optimisations to reduce the amount of time we hold locks
in the datapath, eliminate some redundant checks and the size of a
spi_transfer
- Lots of fixes, cleanups and general enhancements to drivers,
especially the rspi and Atmel drivers"
* tag 'spi-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (112 commits)
spi: core: Fix transfer failure when master->transfer_one returns positive value
spi: Correct set_cs() documentation
spi: Clarify transfer_one() w.r.t. spi_finalize_current_transfer()
spi: Spelling s/finised/finished/
spi: sc18is602: Convert to use bits_per_word_mask
spi: Remove duplicate code to set default bits_per_word setting
spi/pxa2xx: fix compilation warning when !CONFIG_PM_SLEEP
spi: clps711x: Add MODULE_ALIAS to support module auto-loading
spi: rspi: Add missing clk_disable() calls in error and cleanup paths
spi: rspi: Spelling s/transmition/transmission/
spi: rspi: Add support for specifying CPHA/CPOL
spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match
spi: rspi: Add more QSPI register documentation
spi: rspi: Add more RSPI register documentation
spi: rspi: Remove dependency on DMAE for SHMOBILE
spi/s3c64xx: Correct indentation
spi: sh: Use spi_sh_clear_bit() instead of open-coded
spi: bitbang: Grammar s/make to make/to make/
spi: sh-hspi: Spelling s/recive/receive/
spi: core: Improve tx/rx_nbits check comments
...
This commit is contained in:
Linus Torvalds
commit
2d2e7d195b
@ -67,7 +67,7 @@ only 1(SINGLE), 2(DUAL) and 4(QUAD).
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Dual/Quad mode is not allowed when 3-wire mode is used.
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If a gpio chipselect is used for the SPI slave the gpio number will be passed
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via the cs_gpio
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via the SPI master node cs-gpios property.
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SPI example for an MPC5200 SPI bus:
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spi@f00 {
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@ -3,6 +3,11 @@ TI QSPI controller.
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Required properties:
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- compatible : should be "ti,dra7xxx-qspi" or "ti,am4372-qspi".
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- reg: Should contain QSPI registers location and length.
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- reg-names: Should contain the resource reg names.
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- qspi_base: Qspi configuration register Address space
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- qspi_mmap: Memory mapped Address space
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- (optional) qspi_ctrlmod: Control module Address space
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- interrupts: should contain the qspi interrupt number.
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- #address-cells, #size-cells : Must be present if the device has sub-nodes
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- ti,hwmods: Name of the hwmod associated to the QSPI
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@ -14,7 +19,8 @@ Example:
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qspi: qspi@4b300000 {
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compatible = "ti,dra7xxx-qspi";
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reg = <0x4b300000 0x100>;
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reg = <0x47900000 0x100>, <0x30000000 0x3ffffff>;
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reg-names = "qspi_base", "qspi_mmap";
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <25000000>;
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@ -34,7 +34,7 @@ SPI slave functions are usually not interoperable between vendors
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- It may also be used to stream data in either direction (half duplex),
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or both of them at the same time (full duplex).
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- Some devices may use eight bit words. Others may different word
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- Some devices may use eight bit words. Others may use different word
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lengths, such as streams of 12-bit or 20-bit digital samples.
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- Words are usually sent with their most significant bit (MSB) first,
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@ -121,7 +121,7 @@ active. So the master must set the clock to inactive before selecting
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a slave, and the slave can tell the chosen polarity by sampling the
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clock level when its select line goes active. That's why many devices
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support for example both modes 0 and 3: they don't care about polarity,
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and alway clock data in/out on rising clock edges.
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and always clock data in/out on rising clock edges.
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How do these driver programming interfaces work?
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@ -139,7 +139,7 @@ a command and then reading its response.
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There are two types of SPI driver, here called:
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Controller drivers ... controllers may be built in to System-On-Chip
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Controller drivers ... controllers may be built into System-On-Chip
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processors, and often support both Master and Slave roles.
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These drivers touch hardware registers and may use DMA.
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Or they can be PIO bitbangers, needing just GPIO pins.
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@ -548,7 +548,7 @@ SPI MASTER METHODS
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DEPRECATED METHODS
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master->transfer(struct spi_device *spi, struct spi_message *message)
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This must not sleep. Its responsibility is arrange that the
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This must not sleep. Its responsibility is to arrange that the
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transfer happens and its complete() callback is issued. The two
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will normally happen later, after other transfers complete, and
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if the controller is idle it will need to be kickstarted. This
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@ -1,13 +0,0 @@
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/* linux/arch/arm/plat-samsung/include/plat/fiq.h
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*
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* Copyright (c) 2009 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* Header file for S3C24XX CPU FIQ support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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extern int s3c24xx_set_fiq(unsigned int irq, bool on);
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@ -118,6 +118,13 @@ config SPI_BCM63XX
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help
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Enable support for the SPI controller on the Broadcom BCM63xx SoCs.
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config SPI_BCM63XX_HSSPI
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tristate "Broadcom BCM63XX HS SPI controller driver"
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depends on BCM63XX || COMPILE_TEST
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help
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This enables support for the High Speed SPI controller present on
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newer Broadcom BCM63XX SoCs.
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config SPI_BITBANG
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tristate "Utilities for Bitbanging SPI masters"
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help
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@ -159,7 +166,6 @@ config SPI_DAVINCI
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tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller"
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depends on ARCH_DAVINCI || ARCH_KEYSTONE
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select SPI_BITBANG
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select TI_EDMA
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help
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SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.
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@ -301,6 +307,7 @@ config SPI_OMAP_UWIRE
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config SPI_OMAP24XX
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tristate "McSPI driver for OMAP"
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depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SH
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depends on ARCH_OMAP2PLUS || COMPILE_TEST
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help
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SPI master controller for OMAP24XX and later Multichannel SPI
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@ -370,7 +377,7 @@ config SPI_PXA2XX_PCI
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config SPI_RSPI
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tristate "Renesas RSPI controller"
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depends on (SUPERH || ARCH_SHMOBILE) && SH_DMAE_BASE
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depends on (SUPERH && SH_DMAE_BASE) || ARCH_SHMOBILE
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help
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SPI driver for Renesas RSPI blocks.
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@ -407,7 +414,8 @@ config SPI_SC18IS602
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config SPI_SH_MSIOF
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tristate "SuperH MSIOF SPI controller"
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depends on (SUPERH || ARCH_SHMOBILE) && HAVE_CLK
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depends on HAVE_CLK
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depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
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select SPI_BITBANG
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help
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SPI driver for SuperH and SH Mobile MSIOF blocks.
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@ -16,6 +16,7 @@ obj-$(CONFIG_SPI_ATH79) += spi-ath79.o
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obj-$(CONFIG_SPI_AU1550) += spi-au1550.o
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obj-$(CONFIG_SPI_BCM2835) += spi-bcm2835.o
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obj-$(CONFIG_SPI_BCM63XX) += spi-bcm63xx.o
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obj-$(CONFIG_SPI_BCM63XX_HSSPI) += spi-bcm63xx-hsspi.o
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obj-$(CONFIG_SPI_BFIN5XX) += spi-bfin5xx.o
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obj-$(CONFIG_SPI_BFIN_V3) += spi-bfin-v3.o
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obj-$(CONFIG_SPI_BFIN_SPORT) += spi-bfin-sport.o
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@ -220,8 +220,6 @@ static int altera_spi_probe(struct platform_device *pdev)
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/* setup the state for the bitbang driver */
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hw->bitbang.master = master;
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if (!hw->bitbang.master)
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return err;
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hw->bitbang.chipselect = altera_spi_chipsel;
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hw->bitbang.txrx_bufs = altera_spi_txrx;
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@ -243,21 +243,21 @@ static int ath79_spi_probe(struct platform_device *pdev)
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goto err_put_master;
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}
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sp->base = ioremap(r->start, resource_size(r));
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sp->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
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if (!sp->base) {
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ret = -ENXIO;
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goto err_put_master;
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}
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sp->clk = clk_get(&pdev->dev, "ahb");
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sp->clk = devm_clk_get(&pdev->dev, "ahb");
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if (IS_ERR(sp->clk)) {
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ret = PTR_ERR(sp->clk);
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goto err_unmap;
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goto err_put_master;
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}
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ret = clk_enable(sp->clk);
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if (ret)
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goto err_clk_put;
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goto err_put_master;
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rate = DIV_ROUND_UP(clk_get_rate(sp->clk), MHZ);
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if (!rate) {
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@ -280,10 +280,6 @@ err_disable:
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ath79_spi_disable(sp);
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err_clk_disable:
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clk_disable(sp->clk);
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err_clk_put:
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clk_put(sp->clk);
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err_unmap:
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iounmap(sp->base);
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err_put_master:
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spi_master_put(sp->bitbang.master);
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@ -297,8 +293,6 @@ static int ath79_spi_remove(struct platform_device *pdev)
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spi_bitbang_stop(&sp->bitbang);
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ath79_spi_disable(sp);
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clk_disable(sp->clk);
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clk_put(sp->clk);
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iounmap(sp->base);
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spi_master_put(sp->bitbang.master);
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return 0;
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File diff suppressed because it is too large
Load Diff
@ -347,8 +347,8 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
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clk_prepare_enable(bs->clk);
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err = request_irq(bs->irq, bcm2835_spi_interrupt, 0,
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dev_name(&pdev->dev), master);
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err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt, 0,
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dev_name(&pdev->dev), master);
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if (err) {
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dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
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goto out_clk_disable;
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@ -361,13 +361,11 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
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err = devm_spi_register_master(&pdev->dev, master);
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if (err) {
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dev_err(&pdev->dev, "could not register SPI master: %d\n", err);
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goto out_free_irq;
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goto out_clk_disable;
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}
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return 0;
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out_free_irq:
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free_irq(bs->irq, master);
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out_clk_disable:
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clk_disable_unprepare(bs->clk);
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out_master_put:
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@ -380,8 +378,6 @@ static int bcm2835_spi_remove(struct platform_device *pdev)
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struct spi_master *master = platform_get_drvdata(pdev);
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struct bcm2835_spi *bs = spi_master_get_devdata(master);
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free_irq(bs->irq, master);
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/* Clear FIFOs, and disable the HW block */
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bcm2835_wr(bs, BCM2835_SPI_CS,
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BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX);
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475
drivers/spi/spi-bcm63xx-hsspi.c
Normal file
475
drivers/spi/spi-bcm63xx-hsspi.c
Normal file
@ -0,0 +1,475 @@
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/*
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* Broadcom BCM63XX High Speed SPI Controller driver
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*
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* Copyright 2000-2010 Broadcom Corporation
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* Copyright 2012-2013 Jonas Gorski <jogo@openwrt.org>
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*
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* Licensed under the GNU/GPL. See COPYING for details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/spi/spi.h>
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#include <linux/workqueue.h>
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#include <linux/mutex.h>
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#define HSSPI_GLOBAL_CTRL_REG 0x0
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#define GLOBAL_CTRL_CS_POLARITY_SHIFT 0
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#define GLOBAL_CTRL_CS_POLARITY_MASK 0x000000ff
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#define GLOBAL_CTRL_PLL_CLK_CTRL_SHIFT 8
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#define GLOBAL_CTRL_PLL_CLK_CTRL_MASK 0x0000ff00
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#define GLOBAL_CTRL_CLK_GATE_SSOFF BIT(16)
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#define GLOBAL_CTRL_CLK_POLARITY BIT(17)
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#define GLOBAL_CTRL_MOSI_IDLE BIT(18)
|
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|
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#define HSSPI_GLOBAL_EXT_TRIGGER_REG 0x4
|
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|
||||
#define HSSPI_INT_STATUS_REG 0x8
|
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#define HSSPI_INT_STATUS_MASKED_REG 0xc
|
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#define HSSPI_INT_MASK_REG 0x10
|
||||
|
||||
#define HSSPI_PINGx_CMD_DONE(i) BIT((i * 8) + 0)
|
||||
#define HSSPI_PINGx_RX_OVER(i) BIT((i * 8) + 1)
|
||||
#define HSSPI_PINGx_TX_UNDER(i) BIT((i * 8) + 2)
|
||||
#define HSSPI_PINGx_POLL_TIMEOUT(i) BIT((i * 8) + 3)
|
||||
#define HSSPI_PINGx_CTRL_INVAL(i) BIT((i * 8) + 4)
|
||||
|
||||
#define HSSPI_INT_CLEAR_ALL 0xff001f1f
|
||||
|
||||
#define HSSPI_PINGPONG_COMMAND_REG(x) (0x80 + (x) * 0x40)
|
||||
#define PINGPONG_CMD_COMMAND_MASK 0xf
|
||||
#define PINGPONG_COMMAND_NOOP 0
|
||||
#define PINGPONG_COMMAND_START_NOW 1
|
||||
#define PINGPONG_COMMAND_START_TRIGGER 2
|
||||
#define PINGPONG_COMMAND_HALT 3
|
||||
#define PINGPONG_COMMAND_FLUSH 4
|
||||
#define PINGPONG_CMD_PROFILE_SHIFT 8
|
||||
#define PINGPONG_CMD_SS_SHIFT 12
|
||||
|
||||
#define HSSPI_PINGPONG_STATUS_REG(x) (0x84 + (x) * 0x40)
|
||||
|
||||
#define HSSPI_PROFILE_CLK_CTRL_REG(x) (0x100 + (x) * 0x20)
|
||||
#define CLK_CTRL_FREQ_CTRL_MASK 0x0000ffff
|
||||
#define CLK_CTRL_SPI_CLK_2X_SEL BIT(14)
|
||||
#define CLK_CTRL_ACCUM_RST_ON_LOOP BIT(15)
|
||||
|
||||
#define HSSPI_PROFILE_SIGNAL_CTRL_REG(x) (0x104 + (x) * 0x20)
|
||||
#define SIGNAL_CTRL_LATCH_RISING BIT(12)
|
||||
#define SIGNAL_CTRL_LAUNCH_RISING BIT(13)
|
||||
#define SIGNAL_CTRL_ASYNC_INPUT_PATH BIT(16)
|
||||
|
||||
#define HSSPI_PROFILE_MODE_CTRL_REG(x) (0x108 + (x) * 0x20)
|
||||
#define MODE_CTRL_MULTIDATA_RD_STRT_SHIFT 8
|
||||
#define MODE_CTRL_MULTIDATA_WR_STRT_SHIFT 12
|
||||
#define MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT 16
|
||||
#define MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT 18
|
||||
#define MODE_CTRL_MODE_3WIRE BIT(20)
|
||||
#define MODE_CTRL_PREPENDBYTE_CNT_SHIFT 24
|
||||
|
||||
#define HSSPI_FIFO_REG(x) (0x200 + (x) * 0x200)
|
||||
|
||||
|
||||
#define HSSPI_OP_CODE_SHIFT 13
|
||||
#define HSSPI_OP_SLEEP (0 << HSSPI_OP_CODE_SHIFT)
|
||||
#define HSSPI_OP_READ_WRITE (1 << HSSPI_OP_CODE_SHIFT)
|
||||
#define HSSPI_OP_WRITE (2 << HSSPI_OP_CODE_SHIFT)
|
||||
#define HSSPI_OP_READ (3 << HSSPI_OP_CODE_SHIFT)
|
||||
#define HSSPI_OP_SETIRQ (4 << HSSPI_OP_CODE_SHIFT)
|
||||
|
||||
#define HSSPI_BUFFER_LEN 512
|
||||
#define HSSPI_OPCODE_LEN 2
|
||||
|
||||
#define HSSPI_MAX_PREPEND_LEN 15
|
||||
|
||||
#define HSSPI_MAX_SYNC_CLOCK 30000000
|
||||
|
||||
#define HSSPI_BUS_NUM 1 /* 0 is legacy SPI */
|
||||
|
||||
struct bcm63xx_hsspi {
|
||||
struct completion done;
|
||||
struct mutex bus_mutex;
|
||||
|
||||
struct platform_device *pdev;
|
||||
struct clk *clk;
|
||||
void __iomem *regs;
|
||||
u8 __iomem *fifo;
|
||||
|
||||
u32 speed_hz;
|
||||
u8 cs_polarity;
|
||||
};
|
||||
|
||||
static void bcm63xx_hsspi_set_cs(struct bcm63xx_hsspi *bs, unsigned cs,
|
||||
bool active)
|
||||
{
|
||||
u32 reg;
|
||||
|
||||
mutex_lock(&bs->bus_mutex);
|
||||
reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
|
||||
reg &= ~BIT(cs);
|
||||
if (active == !(bs->cs_polarity & BIT(cs)))
|
||||
reg |= BIT(cs);
|
||||
|
||||
__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
mutex_unlock(&bs->bus_mutex);
|
||||
}
|
||||
|
||||
static void bcm63xx_hsspi_set_clk(struct bcm63xx_hsspi *bs,
|
||||
struct spi_device *spi, int hz)
|
||||
{
|
||||
unsigned profile = spi->chip_select;
|
||||
u32 reg;
|
||||
|
||||
reg = DIV_ROUND_UP(2048, DIV_ROUND_UP(bs->speed_hz, hz));
|
||||
__raw_writel(CLK_CTRL_ACCUM_RST_ON_LOOP | reg,
|
||||
bs->regs + HSSPI_PROFILE_CLK_CTRL_REG(profile));
|
||||
|
||||
reg = __raw_readl(bs->regs + HSSPI_PROFILE_SIGNAL_CTRL_REG(profile));
|
||||
if (hz > HSSPI_MAX_SYNC_CLOCK)
|
||||
reg |= SIGNAL_CTRL_ASYNC_INPUT_PATH;
|
||||
else
|
||||
reg &= ~SIGNAL_CTRL_ASYNC_INPUT_PATH;
|
||||
__raw_writel(reg, bs->regs + HSSPI_PROFILE_SIGNAL_CTRL_REG(profile));
|
||||
|
||||
mutex_lock(&bs->bus_mutex);
|
||||
/* setup clock polarity */
|
||||
reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
reg &= ~GLOBAL_CTRL_CLK_POLARITY;
|
||||
if (spi->mode & SPI_CPOL)
|
||||
reg |= GLOBAL_CTRL_CLK_POLARITY;
|
||||
__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
mutex_unlock(&bs->bus_mutex);
|
||||
}
|
||||
|
||||
static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
|
||||
{
|
||||
struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
|
||||
unsigned chip_select = spi->chip_select;
|
||||
u16 opcode = 0;
|
||||
int pending = t->len;
|
||||
int step_size = HSSPI_BUFFER_LEN;
|
||||
const u8 *tx = t->tx_buf;
|
||||
u8 *rx = t->rx_buf;
|
||||
|
||||
bcm63xx_hsspi_set_clk(bs, spi, t->speed_hz);
|
||||
bcm63xx_hsspi_set_cs(bs, spi->chip_select, true);
|
||||
|
||||
if (tx && rx)
|
||||
opcode = HSSPI_OP_READ_WRITE;
|
||||
else if (tx)
|
||||
opcode = HSSPI_OP_WRITE;
|
||||
else if (rx)
|
||||
opcode = HSSPI_OP_READ;
|
||||
|
||||
if (opcode != HSSPI_OP_READ)
|
||||
step_size -= HSSPI_OPCODE_LEN;
|
||||
|
||||
__raw_writel(0 << MODE_CTRL_PREPENDBYTE_CNT_SHIFT |
|
||||
2 << MODE_CTRL_MULTIDATA_WR_STRT_SHIFT |
|
||||
2 << MODE_CTRL_MULTIDATA_RD_STRT_SHIFT | 0xff,
|
||||
bs->regs + HSSPI_PROFILE_MODE_CTRL_REG(chip_select));
|
||||
|
||||
while (pending > 0) {
|
||||
int curr_step = min_t(int, step_size, pending);
|
||||
|
||||
init_completion(&bs->done);
|
||||
if (tx) {
|
||||
memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN, tx, curr_step);
|
||||
tx += curr_step;
|
||||
}
|
||||
|
||||
__raw_writew(opcode | curr_step, bs->fifo);
|
||||
|
||||
/* enable interrupt */
|
||||
__raw_writel(HSSPI_PINGx_CMD_DONE(0),
|
||||
bs->regs + HSSPI_INT_MASK_REG);
|
||||
|
||||
/* start the transfer */
|
||||
__raw_writel(!chip_select << PINGPONG_CMD_SS_SHIFT |
|
||||
chip_select << PINGPONG_CMD_PROFILE_SHIFT |
|
||||
PINGPONG_COMMAND_START_NOW,
|
||||
bs->regs + HSSPI_PINGPONG_COMMAND_REG(0));
|
||||
|
||||
if (wait_for_completion_timeout(&bs->done, HZ) == 0) {
|
||||
dev_err(&bs->pdev->dev, "transfer timed out!\n");
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
if (rx) {
|
||||
memcpy_fromio(rx, bs->fifo, curr_step);
|
||||
rx += curr_step;
|
||||
}
|
||||
|
||||
pending -= curr_step;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm63xx_hsspi_setup(struct spi_device *spi)
|
||||
{
|
||||
struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
|
||||
u32 reg;
|
||||
|
||||
reg = __raw_readl(bs->regs +
|
||||
HSSPI_PROFILE_SIGNAL_CTRL_REG(spi->chip_select));
|
||||
reg &= ~(SIGNAL_CTRL_LAUNCH_RISING | SIGNAL_CTRL_LATCH_RISING);
|
||||
if (spi->mode & SPI_CPHA)
|
||||
reg |= SIGNAL_CTRL_LAUNCH_RISING;
|
||||
else
|
||||
reg |= SIGNAL_CTRL_LATCH_RISING;
|
||||
__raw_writel(reg, bs->regs +
|
||||
HSSPI_PROFILE_SIGNAL_CTRL_REG(spi->chip_select));
|
||||
|
||||
mutex_lock(&bs->bus_mutex);
|
||||
reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
|
||||
/* only change actual polarities if there is no transfer */
|
||||
if ((reg & GLOBAL_CTRL_CS_POLARITY_MASK) == bs->cs_polarity) {
|
||||
if (spi->mode & SPI_CS_HIGH)
|
||||
reg |= BIT(spi->chip_select);
|
||||
else
|
||||
reg &= ~BIT(spi->chip_select);
|
||||
__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
}
|
||||
|
||||
if (spi->mode & SPI_CS_HIGH)
|
||||
bs->cs_polarity |= BIT(spi->chip_select);
|
||||
else
|
||||
bs->cs_polarity &= ~BIT(spi->chip_select);
|
||||
|
||||
mutex_unlock(&bs->bus_mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm63xx_hsspi_transfer_one(struct spi_master *master,
|
||||
struct spi_message *msg)
|
||||
{
|
||||
struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
|
||||
struct spi_transfer *t;
|
||||
struct spi_device *spi = msg->spi;
|
||||
int status = -EINVAL;
|
||||
int dummy_cs;
|
||||
u32 reg;
|
||||
|
||||
/* This controller does not support keeping CS active during idle.
|
||||
* To work around this, we use the following ugly hack:
|
||||
*
|
||||
* a. Invert the target chip select's polarity so it will be active.
|
||||
* b. Select a "dummy" chip select to use as the hardware target.
|
||||
* c. Invert the dummy chip select's polarity so it will be inactive
|
||||
* during the actual transfers.
|
||||
* d. Tell the hardware to send to the dummy chip select. Thanks to
|
||||
* the multiplexed nature of SPI the actual target will receive
|
||||
* the transfer and we see its response.
|
||||
*
|
||||
* e. At the end restore the polarities again to their default values.
|
||||
*/
|
||||
|
||||
dummy_cs = !spi->chip_select;
|
||||
bcm63xx_hsspi_set_cs(bs, dummy_cs, true);
|
||||
|
||||
list_for_each_entry(t, &msg->transfers, transfer_list) {
|
||||
status = bcm63xx_hsspi_do_txrx(spi, t);
|
||||
if (status)
|
||||
break;
|
||||
|
||||
msg->actual_length += t->len;
|
||||
|
||||
if (t->delay_usecs)
|
||||
udelay(t->delay_usecs);
|
||||
|
||||
if (t->cs_change)
|
||||
bcm63xx_hsspi_set_cs(bs, spi->chip_select, false);
|
||||
}
|
||||
|
||||
mutex_lock(&bs->bus_mutex);
|
||||
reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
reg &= ~GLOBAL_CTRL_CS_POLARITY_MASK;
|
||||
reg |= bs->cs_polarity;
|
||||
__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
mutex_unlock(&bs->bus_mutex);
|
||||
|
||||
msg->status = status;
|
||||
spi_finalize_current_message(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static irqreturn_t bcm63xx_hsspi_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
struct bcm63xx_hsspi *bs = (struct bcm63xx_hsspi *)dev_id;
|
||||
|
||||
if (__raw_readl(bs->regs + HSSPI_INT_STATUS_MASKED_REG) == 0)
|
||||
return IRQ_NONE;
|
||||
|
||||
__raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG);
|
||||
__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
|
||||
|
||||
complete(&bs->done);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int bcm63xx_hsspi_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct spi_master *master;
|
||||
struct bcm63xx_hsspi *bs;
|
||||
struct resource *res_mem;
|
||||
void __iomem *regs;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct clk *clk;
|
||||
int irq, ret;
|
||||
u32 reg, rate;
|
||||
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0) {
|
||||
dev_err(dev, "no irq\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
regs = devm_ioremap_resource(dev, res_mem);
|
||||
if (IS_ERR(regs))
|
||||
return PTR_ERR(regs);
|
||||
|
||||
clk = devm_clk_get(dev, "hsspi");
|
||||
|
||||
if (IS_ERR(clk))
|
||||
return PTR_ERR(clk);
|
||||
|
||||
rate = clk_get_rate(clk);
|
||||
if (!rate)
|
||||
return -EINVAL;
|
||||
|
||||
ret = clk_prepare_enable(clk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
master = spi_alloc_master(&pdev->dev, sizeof(*bs));
|
||||
if (!master) {
|
||||
ret = -ENOMEM;
|
||||
goto out_disable_clk;
|
||||
}
|
||||
|
||||
bs = spi_master_get_devdata(master);
|
||||
bs->pdev = pdev;
|
||||
bs->clk = clk;
|
||||
bs->regs = regs;
|
||||
bs->speed_hz = rate;
|
||||
bs->fifo = (u8 __iomem *)(bs->regs + HSSPI_FIFO_REG(0));
|
||||
|
||||
mutex_init(&bs->bus_mutex);
|
||||
|
||||
master->bus_num = HSSPI_BUS_NUM;
|
||||
master->num_chipselect = 8;
|
||||
master->setup = bcm63xx_hsspi_setup;
|
||||
master->transfer_one_message = bcm63xx_hsspi_transfer_one;
|
||||
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
|
||||
master->bits_per_word_mask = SPI_BPW_MASK(8);
|
||||
master->auto_runtime_pm = true;
|
||||
|
||||
platform_set_drvdata(pdev, master);
|
||||
|
||||
/* Initialize the hardware */
|
||||
__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
|
||||
|
||||
/* clean up any pending interrupts */
|
||||
__raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG);
|
||||
|
||||
/* read out default CS polarities */
|
||||
reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
bs->cs_polarity = reg & GLOBAL_CTRL_CS_POLARITY_MASK;
|
||||
__raw_writel(reg | GLOBAL_CTRL_CLK_GATE_SSOFF,
|
||||
bs->regs + HSSPI_GLOBAL_CTRL_REG);
|
||||
|
||||
ret = devm_request_irq(dev, irq, bcm63xx_hsspi_interrupt, IRQF_SHARED,
|
||||
pdev->name, bs);
|
||||
|
||||
if (ret)
|
||||
goto out_put_master;
|
||||
|
||||
/* register and we are done */
|
||||
ret = devm_spi_register_master(dev, master);
|
||||
if (ret)
|
||||
goto out_put_master;
|
||||
|
||||
return 0;
|
||||
|
||||
out_put_master:
|
||||
spi_master_put(master);
|
||||
out_disable_clk:
|
||||
clk_disable_unprepare(clk);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static int bcm63xx_hsspi_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct spi_master *master = platform_get_drvdata(pdev);
|
||||
struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
|
||||
|
||||
/* reset the hardware and block queue progress */
|
||||
__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
|
||||
clk_disable_unprepare(bs->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int bcm63xx_hsspi_suspend(struct device *dev)
|
||||
{
|
||||
struct spi_master *master = dev_get_drvdata(dev);
|
||||
struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
|
||||
|
||||
spi_master_suspend(master);
|
||||
clk_disable_unprepare(bs->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm63xx_hsspi_resume(struct device *dev)
|
||||
{
|
||||
struct spi_master *master = dev_get_drvdata(dev);
|
||||
struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
|
||||
int ret;
|
||||
|
||||
ret = clk_prepare_enable(bs->clk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
spi_master_resume(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static const struct dev_pm_ops bcm63xx_hsspi_pm_ops = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(bcm63xx_hsspi_suspend, bcm63xx_hsspi_resume)
|
||||
};
|
||||
|
||||
static struct platform_driver bcm63xx_hsspi_driver = {
|
||||
.driver = {
|
||||
.name = "bcm63xx-hsspi",
|
||||
.owner = THIS_MODULE,
|
||||
.pm = &bcm63xx_hsspi_pm_ops,
|
||||
},
|
||||
.probe = bcm63xx_hsspi_probe,
|
||||
.remove = bcm63xx_hsspi_remove,
|
||||
};
|
||||
|
||||
module_platform_driver(bcm63xx_hsspi_driver);
|
||||
|
||||
MODULE_ALIAS("platform:bcm63xx_hsspi");
|
||||
MODULE_DESCRIPTION("Broadcom BCM63xx High Speed SPI Controller driver");
|
||||
MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
@ -169,8 +169,6 @@ static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *first,
|
||||
transfer_list);
|
||||
}
|
||||
|
||||
len -= prepend_len;
|
||||
|
||||
init_completion(&bs->done);
|
||||
|
||||
/* Fill in the Message control register */
|
||||
@ -205,13 +203,7 @@ static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *first,
|
||||
if (!timeout)
|
||||
return -ETIMEDOUT;
|
||||
|
||||
/* read out all data */
|
||||
rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
|
||||
|
||||
if (do_rx && rx_tail != len)
|
||||
return -EIO;
|
||||
|
||||
if (!rx_tail)
|
||||
if (!do_rx)
|
||||
return 0;
|
||||
|
||||
len = 0;
|
||||
@ -345,22 +337,19 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0) {
|
||||
dev_err(dev, "no irq\n");
|
||||
ret = -ENXIO;
|
||||
goto out;
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
clk = clk_get(dev, "spi");
|
||||
clk = devm_clk_get(dev, "spi");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(dev, "no clock for device\n");
|
||||
ret = PTR_ERR(clk);
|
||||
goto out;
|
||||
return PTR_ERR(clk);
|
||||
}
|
||||
|
||||
master = spi_alloc_master(dev, sizeof(*bs));
|
||||
if (!master) {
|
||||
dev_err(dev, "out of memory\n");
|
||||
ret = -ENOMEM;
|
||||
goto out_clk;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
bs = spi_master_get_devdata(master);
|
||||
@ -408,7 +397,10 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
|
||||
}
|
||||
|
||||
/* Initialize hardware */
|
||||
clk_prepare_enable(bs->clk);
|
||||
ret = clk_prepare_enable(bs->clk);
|
||||
if (ret)
|
||||
goto out_err;
|
||||
|
||||
bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
|
||||
|
||||
/* register and we are done */
|
||||
@ -427,9 +419,6 @@ out_clk_disable:
|
||||
clk_disable_unprepare(clk);
|
||||
out_err:
|
||||
spi_master_put(master);
|
||||
out_clk:
|
||||
clk_put(clk);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -443,12 +432,11 @@ static int bcm63xx_spi_remove(struct platform_device *pdev)
|
||||
|
||||
/* HW shutdown */
|
||||
clk_disable_unprepare(bs->clk);
|
||||
clk_put(bs->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int bcm63xx_spi_suspend(struct device *dev)
|
||||
{
|
||||
struct spi_master *master = dev_get_drvdata(dev);
|
||||
@ -465,29 +453,27 @@ static int bcm63xx_spi_resume(struct device *dev)
|
||||
{
|
||||
struct spi_master *master = dev_get_drvdata(dev);
|
||||
struct bcm63xx_spi *bs = spi_master_get_devdata(master);
|
||||
int ret;
|
||||
|
||||
clk_prepare_enable(bs->clk);
|
||||
ret = clk_prepare_enable(bs->clk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
spi_master_resume(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static const struct dev_pm_ops bcm63xx_spi_pm_ops = {
|
||||
.suspend = bcm63xx_spi_suspend,
|
||||
.resume = bcm63xx_spi_resume,
|
||||
SET_SYSTEM_SLEEP_PM_OPS(bcm63xx_spi_suspend, bcm63xx_spi_resume)
|
||||
};
|
||||
|
||||
#define BCM63XX_SPI_PM_OPS (&bcm63xx_spi_pm_ops)
|
||||
#else
|
||||
#define BCM63XX_SPI_PM_OPS NULL
|
||||
#endif
|
||||
|
||||
static struct platform_driver bcm63xx_spi_driver = {
|
||||
.driver = {
|
||||
.name = "bcm63xx-spi",
|
||||
.owner = THIS_MODULE,
|
||||
.pm = BCM63XX_SPI_PM_OPS,
|
||||
.pm = &bcm63xx_spi_pm_ops,
|
||||
},
|
||||
.probe = bcm63xx_spi_probe,
|
||||
.remove = bcm63xx_spi_remove,
|
||||
|
||||
@ -38,7 +38,7 @@
|
||||
*
|
||||
* Since this is software, the timings may not be exactly what your board's
|
||||
* chips need ... there may be several reasons you'd need to tweak timings
|
||||
* in these routines, not just make to make it faster or slower to match a
|
||||
* in these routines, not just to make it faster or slower to match a
|
||||
* particular CPU clock rate.
|
||||
*/
|
||||
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
/*
|
||||
* CLPS711X SPI bus driver
|
||||
*
|
||||
* Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
|
||||
* Copyright (C) 2012-2014 Alexander Shiyan <shc_work@mail.ru>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
@ -198,7 +198,7 @@ static int spi_clps711x_probe(struct platform_device *pdev)
|
||||
ret = -EINVAL;
|
||||
goto err_out;
|
||||
}
|
||||
if (gpio_request(hw->chipselect[i], DRIVER_NAME)) {
|
||||
if (devm_gpio_request(&pdev->dev, hw->chipselect[i], NULL)) {
|
||||
dev_err(&pdev->dev, "Can't get CS GPIO %i\n", i);
|
||||
ret = -EINVAL;
|
||||
goto err_out;
|
||||
@ -240,38 +240,21 @@ static int spi_clps711x_probe(struct platform_device *pdev)
|
||||
dev_err(&pdev->dev, "Failed to register master\n");
|
||||
|
||||
err_out:
|
||||
while (--i >= 0)
|
||||
if (gpio_is_valid(hw->chipselect[i]))
|
||||
gpio_free(hw->chipselect[i]);
|
||||
|
||||
spi_master_put(master);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int spi_clps711x_remove(struct platform_device *pdev)
|
||||
{
|
||||
int i;
|
||||
struct spi_master *master = platform_get_drvdata(pdev);
|
||||
struct spi_clps711x_data *hw = spi_master_get_devdata(master);
|
||||
|
||||
for (i = 0; i < master->num_chipselect; i++)
|
||||
if (gpio_is_valid(hw->chipselect[i]))
|
||||
gpio_free(hw->chipselect[i]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver clps711x_spi_driver = {
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = spi_clps711x_probe,
|
||||
.remove = spi_clps711x_remove,
|
||||
};
|
||||
module_platform_driver(clps711x_spi_driver);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
|
||||
MODULE_DESCRIPTION("CLPS711X SPI bus driver");
|
||||
MODULE_ALIAS("platform:" DRIVER_NAME);
|
||||
|
||||
@ -397,44 +397,31 @@ static int mcfqspi_probe(struct platform_device *pdev)
|
||||
mcfqspi = spi_master_get_devdata(master);
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
dev_dbg(&pdev->dev, "platform_get_resource failed\n");
|
||||
status = -ENXIO;
|
||||
mcfqspi->iobase = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(mcfqspi->iobase)) {
|
||||
status = PTR_ERR(mcfqspi->iobase);
|
||||
goto fail0;
|
||||
}
|
||||
|
||||
if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
|
||||
dev_dbg(&pdev->dev, "request_mem_region failed\n");
|
||||
status = -EBUSY;
|
||||
goto fail0;
|
||||
}
|
||||
|
||||
mcfqspi->iobase = ioremap(res->start, resource_size(res));
|
||||
if (!mcfqspi->iobase) {
|
||||
dev_dbg(&pdev->dev, "ioremap failed\n");
|
||||
status = -ENOMEM;
|
||||
goto fail1;
|
||||
}
|
||||
|
||||
mcfqspi->irq = platform_get_irq(pdev, 0);
|
||||
if (mcfqspi->irq < 0) {
|
||||
dev_dbg(&pdev->dev, "platform_get_irq failed\n");
|
||||
status = -ENXIO;
|
||||
goto fail2;
|
||||
goto fail0;
|
||||
}
|
||||
|
||||
status = request_irq(mcfqspi->irq, mcfqspi_irq_handler, 0,
|
||||
pdev->name, mcfqspi);
|
||||
status = devm_request_irq(&pdev->dev, mcfqspi->irq, mcfqspi_irq_handler,
|
||||
0, pdev->name, mcfqspi);
|
||||
if (status) {
|
||||
dev_dbg(&pdev->dev, "request_irq failed\n");
|
||||
goto fail2;
|
||||
goto fail0;
|
||||
}
|
||||
|
||||
mcfqspi->clk = clk_get(&pdev->dev, "qspi_clk");
|
||||
mcfqspi->clk = devm_clk_get(&pdev->dev, "qspi_clk");
|
||||
if (IS_ERR(mcfqspi->clk)) {
|
||||
dev_dbg(&pdev->dev, "clk_get failed\n");
|
||||
status = PTR_ERR(mcfqspi->clk);
|
||||
goto fail3;
|
||||
goto fail0;
|
||||
}
|
||||
clk_enable(mcfqspi->clk);
|
||||
|
||||
@ -445,7 +432,7 @@ static int mcfqspi_probe(struct platform_device *pdev)
|
||||
status = mcfqspi_cs_setup(mcfqspi);
|
||||
if (status) {
|
||||
dev_dbg(&pdev->dev, "error initializing cs_control\n");
|
||||
goto fail4;
|
||||
goto fail1;
|
||||
}
|
||||
|
||||
init_waitqueue_head(&mcfqspi->waitq);
|
||||
@ -459,10 +446,10 @@ static int mcfqspi_probe(struct platform_device *pdev)
|
||||
|
||||
platform_set_drvdata(pdev, master);
|
||||
|
||||
status = spi_register_master(master);
|
||||
status = devm_spi_register_master(&pdev->dev, master);
|
||||
if (status) {
|
||||
dev_dbg(&pdev->dev, "spi_register_master failed\n");
|
||||
goto fail5;
|
||||
goto fail2;
|
||||
}
|
||||
pm_runtime_enable(mcfqspi->dev);
|
||||
|
||||
@ -470,17 +457,10 @@ static int mcfqspi_probe(struct platform_device *pdev)
|
||||
|
||||
return 0;
|
||||
|
||||
fail5:
|
||||
mcfqspi_cs_teardown(mcfqspi);
|
||||
fail4:
|
||||
clk_disable(mcfqspi->clk);
|
||||
clk_put(mcfqspi->clk);
|
||||
fail3:
|
||||
free_irq(mcfqspi->irq, mcfqspi);
|
||||
fail2:
|
||||
iounmap(mcfqspi->iobase);
|
||||
mcfqspi_cs_teardown(mcfqspi);
|
||||
fail1:
|
||||
release_mem_region(res->start, resource_size(res));
|
||||
clk_disable(mcfqspi->clk);
|
||||
fail0:
|
||||
spi_master_put(master);
|
||||
|
||||
@ -501,11 +481,6 @@ static int mcfqspi_remove(struct platform_device *pdev)
|
||||
|
||||
mcfqspi_cs_teardown(mcfqspi);
|
||||
clk_disable(mcfqspi->clk);
|
||||
clk_put(mcfqspi->clk);
|
||||
free_irq(mcfqspi->irq, mcfqspi);
|
||||
iounmap(mcfqspi->iobase);
|
||||
release_mem_region(res->start, resource_size(res));
|
||||
spi_unregister_master(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -396,10 +396,6 @@ static int davinci_spi_setup(struct spi_device *spi)
|
||||
dspi = spi_master_get_devdata(spi->master);
|
||||
pdata = &dspi->pdata;
|
||||
|
||||
/* if bits per word length is zero then set it default 8 */
|
||||
if (!spi->bits_per_word)
|
||||
spi->bits_per_word = 8;
|
||||
|
||||
if (!(spi->mode & SPI_NO_CS)) {
|
||||
if ((pdata->chip_sel == NULL) ||
|
||||
(pdata->chip_sel[spi->chip_select] == SPI_INTERN_CS))
|
||||
@ -853,7 +849,7 @@ static int davinci_spi_probe(struct platform_device *pdev)
|
||||
struct spi_master *master;
|
||||
struct davinci_spi *dspi;
|
||||
struct davinci_spi_platform_data *pdata;
|
||||
struct resource *r, *mem;
|
||||
struct resource *r;
|
||||
resource_size_t dma_rx_chan = SPI_NO_RESOURCE;
|
||||
resource_size_t dma_tx_chan = SPI_NO_RESOURCE;
|
||||
int i = 0, ret = 0;
|
||||
@ -894,39 +890,33 @@ static int davinci_spi_probe(struct platform_device *pdev)
|
||||
|
||||
dspi->pbase = r->start;
|
||||
|
||||
mem = request_mem_region(r->start, resource_size(r), pdev->name);
|
||||
if (mem == NULL) {
|
||||
ret = -EBUSY;
|
||||
dspi->base = devm_ioremap_resource(&pdev->dev, r);
|
||||
if (IS_ERR(dspi->base)) {
|
||||
ret = PTR_ERR(dspi->base);
|
||||
goto free_master;
|
||||
}
|
||||
|
||||
dspi->base = ioremap(r->start, resource_size(r));
|
||||
if (dspi->base == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto release_region;
|
||||
}
|
||||
|
||||
dspi->irq = platform_get_irq(pdev, 0);
|
||||
if (dspi->irq <= 0) {
|
||||
ret = -EINVAL;
|
||||
goto unmap_io;
|
||||
goto free_master;
|
||||
}
|
||||
|
||||
ret = request_threaded_irq(dspi->irq, davinci_spi_irq, dummy_thread_fn,
|
||||
0, dev_name(&pdev->dev), dspi);
|
||||
ret = devm_request_threaded_irq(&pdev->dev, dspi->irq, davinci_spi_irq,
|
||||
dummy_thread_fn, 0, dev_name(&pdev->dev), dspi);
|
||||
if (ret)
|
||||
goto unmap_io;
|
||||
goto free_master;
|
||||
|
||||
dspi->bitbang.master = master;
|
||||
if (dspi->bitbang.master == NULL) {
|
||||
ret = -ENODEV;
|
||||
goto irq_free;
|
||||
goto free_master;
|
||||
}
|
||||
|
||||
dspi->clk = clk_get(&pdev->dev, NULL);
|
||||
dspi->clk = devm_clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(dspi->clk)) {
|
||||
ret = -ENODEV;
|
||||
goto irq_free;
|
||||
goto free_master;
|
||||
}
|
||||
clk_prepare_enable(dspi->clk);
|
||||
|
||||
@ -963,8 +953,8 @@ static int davinci_spi_probe(struct platform_device *pdev)
|
||||
goto free_clk;
|
||||
|
||||
dev_info(&pdev->dev, "DMA: supported\n");
|
||||
dev_info(&pdev->dev, "DMA: RX channel: %d, TX channel: %d, "
|
||||
"event queue: %d\n", dma_rx_chan, dma_tx_chan,
|
||||
dev_info(&pdev->dev, "DMA: RX channel: %pa, TX channel: %pa, "
|
||||
"event queue: %d\n", &dma_rx_chan, &dma_tx_chan,
|
||||
pdata->dma_event_q);
|
||||
}
|
||||
|
||||
@ -1015,13 +1005,6 @@ free_dma:
|
||||
dma_release_channel(dspi->dma_tx);
|
||||
free_clk:
|
||||
clk_disable_unprepare(dspi->clk);
|
||||
clk_put(dspi->clk);
|
||||
irq_free:
|
||||
free_irq(dspi->irq, dspi);
|
||||
unmap_io:
|
||||
iounmap(dspi->base);
|
||||
release_region:
|
||||
release_mem_region(dspi->pbase, resource_size(r));
|
||||
free_master:
|
||||
spi_master_put(master);
|
||||
err:
|
||||
@ -1041,7 +1024,6 @@ static int davinci_spi_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct davinci_spi *dspi;
|
||||
struct spi_master *master;
|
||||
struct resource *r;
|
||||
|
||||
master = platform_get_drvdata(pdev);
|
||||
dspi = spi_master_get_devdata(master);
|
||||
@ -1049,11 +1031,6 @@ static int davinci_spi_remove(struct platform_device *pdev)
|
||||
spi_bitbang_stop(&dspi->bitbang);
|
||||
|
||||
clk_disable_unprepare(dspi->clk);
|
||||
clk_put(dspi->clk);
|
||||
free_irq(dspi->irq, dspi);
|
||||
iounmap(dspi->base);
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
release_mem_region(dspi->pbase, resource_size(r));
|
||||
spi_master_put(master);
|
||||
|
||||
return 0;
|
||||
|
||||
@ -30,14 +30,13 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct dw_spi_mmio *dwsmmio;
|
||||
struct dw_spi *dws;
|
||||
struct resource *mem, *ioarea;
|
||||
struct resource *mem;
|
||||
int ret;
|
||||
|
||||
dwsmmio = kzalloc(sizeof(struct dw_spi_mmio), GFP_KERNEL);
|
||||
if (!dwsmmio) {
|
||||
ret = -ENOMEM;
|
||||
goto err_end;
|
||||
}
|
||||
dwsmmio = devm_kzalloc(&pdev->dev, sizeof(struct dw_spi_mmio),
|
||||
GFP_KERNEL);
|
||||
if (!dwsmmio)
|
||||
return -ENOMEM;
|
||||
|
||||
dws = &dwsmmio->dws;
|
||||
|
||||
@ -45,80 +44,51 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
|
||||
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!mem) {
|
||||
dev_err(&pdev->dev, "no mem resource?\n");
|
||||
ret = -EINVAL;
|
||||
goto err_kfree;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ioarea = request_mem_region(mem->start, resource_size(mem),
|
||||
pdev->name);
|
||||
if (!ioarea) {
|
||||
dev_err(&pdev->dev, "SPI region already claimed\n");
|
||||
ret = -EBUSY;
|
||||
goto err_kfree;
|
||||
}
|
||||
|
||||
dws->regs = ioremap_nocache(mem->start, resource_size(mem));
|
||||
if (!dws->regs) {
|
||||
dev_err(&pdev->dev, "SPI region already mapped\n");
|
||||
ret = -ENOMEM;
|
||||
goto err_release_reg;
|
||||
dws->regs = devm_ioremap_resource(&pdev->dev, mem);
|
||||
if (IS_ERR(dws->regs)) {
|
||||
dev_err(&pdev->dev, "SPI region map failed\n");
|
||||
return PTR_ERR(dws->regs);
|
||||
}
|
||||
|
||||
dws->irq = platform_get_irq(pdev, 0);
|
||||
if (dws->irq < 0) {
|
||||
dev_err(&pdev->dev, "no irq resource?\n");
|
||||
ret = dws->irq; /* -ENXIO */
|
||||
goto err_unmap;
|
||||
return dws->irq; /* -ENXIO */
|
||||
}
|
||||
|
||||
dwsmmio->clk = clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(dwsmmio->clk)) {
|
||||
ret = PTR_ERR(dwsmmio->clk);
|
||||
goto err_unmap;
|
||||
}
|
||||
clk_enable(dwsmmio->clk);
|
||||
dwsmmio->clk = devm_clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(dwsmmio->clk))
|
||||
return PTR_ERR(dwsmmio->clk);
|
||||
ret = clk_prepare_enable(dwsmmio->clk);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
dws->parent_dev = &pdev->dev;
|
||||
dws->bus_num = 0;
|
||||
dws->num_cs = 4;
|
||||
dws->max_freq = clk_get_rate(dwsmmio->clk);
|
||||
|
||||
ret = dw_spi_add_host(dws);
|
||||
ret = dw_spi_add_host(&pdev->dev, dws);
|
||||
if (ret)
|
||||
goto err_clk;
|
||||
goto out;
|
||||
|
||||
platform_set_drvdata(pdev, dwsmmio);
|
||||
return 0;
|
||||
|
||||
err_clk:
|
||||
clk_disable(dwsmmio->clk);
|
||||
clk_put(dwsmmio->clk);
|
||||
dwsmmio->clk = NULL;
|
||||
err_unmap:
|
||||
iounmap(dws->regs);
|
||||
err_release_reg:
|
||||
release_mem_region(mem->start, resource_size(mem));
|
||||
err_kfree:
|
||||
kfree(dwsmmio);
|
||||
err_end:
|
||||
out:
|
||||
clk_disable_unprepare(dwsmmio->clk);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int dw_spi_mmio_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct dw_spi_mmio *dwsmmio = platform_get_drvdata(pdev);
|
||||
struct resource *mem;
|
||||
|
||||
clk_disable(dwsmmio->clk);
|
||||
clk_put(dwsmmio->clk);
|
||||
dwsmmio->clk = NULL;
|
||||
|
||||
clk_disable_unprepare(dwsmmio->clk);
|
||||
dw_spi_remove_host(&dwsmmio->dws);
|
||||
iounmap(dwsmmio->dws.regs);
|
||||
kfree(dwsmmio);
|
||||
|
||||
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
release_mem_region(mem->start, resource_size(mem));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -43,35 +43,25 @@ static int spi_pci_probe(struct pci_dev *pdev,
|
||||
dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n",
|
||||
pdev->vendor, pdev->device);
|
||||
|
||||
ret = pci_enable_device(pdev);
|
||||
ret = pcim_enable_device(pdev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
dwpci = kzalloc(sizeof(struct dw_spi_pci), GFP_KERNEL);
|
||||
if (!dwpci) {
|
||||
ret = -ENOMEM;
|
||||
goto err_disable;
|
||||
}
|
||||
dwpci = devm_kzalloc(&pdev->dev, sizeof(struct dw_spi_pci),
|
||||
GFP_KERNEL);
|
||||
if (!dwpci)
|
||||
return -ENOMEM;
|
||||
|
||||
dwpci->pdev = pdev;
|
||||
dws = &dwpci->dws;
|
||||
|
||||
/* Get basic io resource and map it */
|
||||
dws->paddr = pci_resource_start(pdev, pci_bar);
|
||||
dws->iolen = pci_resource_len(pdev, pci_bar);
|
||||
|
||||
ret = pci_request_region(pdev, pci_bar, dev_name(&pdev->dev));
|
||||
ret = pcim_iomap_regions(pdev, 1, dev_name(&pdev->dev));
|
||||
if (ret)
|
||||
goto err_kfree;
|
||||
return ret;
|
||||
|
||||
dws->regs = ioremap_nocache((unsigned long)dws->paddr,
|
||||
pci_resource_len(pdev, pci_bar));
|
||||
if (!dws->regs) {
|
||||
ret = -ENOMEM;
|
||||
goto err_release_reg;
|
||||
}
|
||||
|
||||
dws->parent_dev = &pdev->dev;
|
||||
dws->bus_num = 0;
|
||||
dws->num_cs = 4;
|
||||
dws->irq = pdev->irq;
|
||||
@ -83,26 +73,17 @@ static int spi_pci_probe(struct pci_dev *pdev,
|
||||
if (pdev->device == 0x0800) {
|
||||
ret = dw_spi_mid_init(dws);
|
||||
if (ret)
|
||||
goto err_unmap;
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = dw_spi_add_host(dws);
|
||||
ret = dw_spi_add_host(&pdev->dev, dws);
|
||||
if (ret)
|
||||
goto err_unmap;
|
||||
return ret;
|
||||
|
||||
/* PCI hook and SPI hook use the same drv data */
|
||||
pci_set_drvdata(pdev, dwpci);
|
||||
return 0;
|
||||
|
||||
err_unmap:
|
||||
iounmap(dws->regs);
|
||||
err_release_reg:
|
||||
pci_release_region(pdev, pci_bar);
|
||||
err_kfree:
|
||||
kfree(dwpci);
|
||||
err_disable:
|
||||
pci_disable_device(pdev);
|
||||
return ret;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void spi_pci_remove(struct pci_dev *pdev)
|
||||
@ -110,10 +91,6 @@ static void spi_pci_remove(struct pci_dev *pdev)
|
||||
struct dw_spi_pci *dwpci = pci_get_drvdata(pdev);
|
||||
|
||||
dw_spi_remove_host(&dwpci->dws);
|
||||
iounmap(dwpci->dws.regs);
|
||||
pci_release_region(pdev, 0);
|
||||
kfree(dwpci);
|
||||
pci_disable_device(pdev);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
@ -148,7 +125,7 @@ static int spi_resume(struct pci_dev *pdev)
|
||||
#define spi_resume NULL
|
||||
#endif
|
||||
|
||||
static DEFINE_PCI_DEVICE_TABLE(pci_ids) = {
|
||||
static const struct pci_device_id pci_ids[] = {
|
||||
/* Intel MID platform SPI controller 0 */
|
||||
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0800) },
|
||||
{},
|
||||
|
||||
@ -427,7 +427,6 @@ static void pump_transfers(unsigned long data)
|
||||
dws->tx_end = dws->tx + transfer->len;
|
||||
dws->rx = transfer->rx_buf;
|
||||
dws->rx_end = dws->rx + transfer->len;
|
||||
dws->cs_change = transfer->cs_change;
|
||||
dws->len = dws->cur_transfer->len;
|
||||
if (chip != dws->prev_chip)
|
||||
cs_change = 1;
|
||||
@ -620,9 +619,11 @@ static int dw_spi_setup(struct spi_device *spi)
|
||||
/* Only alloc on first setup */
|
||||
chip = spi_get_ctldata(spi);
|
||||
if (!chip) {
|
||||
chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
|
||||
chip = devm_kzalloc(&spi->dev, sizeof(struct chip_data),
|
||||
GFP_KERNEL);
|
||||
if (!chip)
|
||||
return -ENOMEM;
|
||||
spi_set_ctldata(spi, chip);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -667,7 +668,6 @@ static int dw_spi_setup(struct spi_device *spi)
|
||||
| (spi->mode << SPI_MODE_OFFSET)
|
||||
| (chip->tmode << SPI_TMOD_OFFSET);
|
||||
|
||||
spi_set_ctldata(spi, chip);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -776,18 +776,16 @@ static void spi_hw_init(struct dw_spi *dws)
|
||||
}
|
||||
}
|
||||
|
||||
int dw_spi_add_host(struct dw_spi *dws)
|
||||
int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
|
||||
{
|
||||
struct spi_master *master;
|
||||
int ret;
|
||||
|
||||
BUG_ON(dws == NULL);
|
||||
|
||||
master = spi_alloc_master(dws->parent_dev, 0);
|
||||
if (!master) {
|
||||
ret = -ENOMEM;
|
||||
goto exit;
|
||||
}
|
||||
master = spi_alloc_master(dev, 0);
|
||||
if (!master)
|
||||
return -ENOMEM;
|
||||
|
||||
dws->master = master;
|
||||
dws->type = SSI_MOTO_SPI;
|
||||
@ -797,7 +795,7 @@ int dw_spi_add_host(struct dw_spi *dws)
|
||||
snprintf(dws->name, sizeof(dws->name), "dw_spi%d",
|
||||
dws->bus_num);
|
||||
|
||||
ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED,
|
||||
ret = devm_request_irq(dev, dws->irq, dw_spi_irq, IRQF_SHARED,
|
||||
dws->name, dws);
|
||||
if (ret < 0) {
|
||||
dev_err(&master->dev, "can not get IRQ\n");
|
||||
@ -836,7 +834,7 @@ int dw_spi_add_host(struct dw_spi *dws)
|
||||
}
|
||||
|
||||
spi_master_set_devdata(master, dws);
|
||||
ret = spi_register_master(master);
|
||||
ret = devm_spi_register_master(dev, master);
|
||||
if (ret) {
|
||||
dev_err(&master->dev, "problem registering spi master\n");
|
||||
goto err_queue_alloc;
|
||||
@ -851,10 +849,8 @@ err_queue_alloc:
|
||||
dws->dma_ops->dma_exit(dws);
|
||||
err_diable_hw:
|
||||
spi_enable_chip(dws, 0);
|
||||
free_irq(dws->irq, dws);
|
||||
err_free_master:
|
||||
spi_master_put(master);
|
||||
exit:
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dw_spi_add_host);
|
||||
@ -878,10 +874,6 @@ void dw_spi_remove_host(struct dw_spi *dws)
|
||||
spi_enable_chip(dws, 0);
|
||||
/* Disable clk */
|
||||
spi_set_clk(dws, 0);
|
||||
free_irq(dws->irq, dws);
|
||||
|
||||
/* Disconnect from the SPI framework */
|
||||
spi_unregister_master(dws->master);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dw_spi_remove_host);
|
||||
|
||||
|
||||
@ -92,13 +92,11 @@ struct dw_spi_dma_ops {
|
||||
struct dw_spi {
|
||||
struct spi_master *master;
|
||||
struct spi_device *cur_dev;
|
||||
struct device *parent_dev;
|
||||
enum dw_ssi_type type;
|
||||
char name[16];
|
||||
|
||||
void __iomem *regs;
|
||||
unsigned long paddr;
|
||||
u32 iolen;
|
||||
int irq;
|
||||
u32 fifo_len; /* depth of the FIFO buffer */
|
||||
u32 max_freq; /* max bus freq supported */
|
||||
@ -135,7 +133,6 @@ struct dw_spi {
|
||||
u8 n_bytes; /* current is a 1/2 bytes op */
|
||||
u8 max_bits_per_word; /* maxim is 16b */
|
||||
u32 dma_width;
|
||||
int cs_change;
|
||||
irqreturn_t (*transfer_handler)(struct dw_spi *dws);
|
||||
void (*cs_control)(u32 command);
|
||||
|
||||
@ -231,7 +228,7 @@ struct dw_spi_chip {
|
||||
void (*cs_control)(u32 command);
|
||||
};
|
||||
|
||||
extern int dw_spi_add_host(struct dw_spi *dws);
|
||||
extern int dw_spi_add_host(struct device *dev, struct dw_spi *dws);
|
||||
extern void dw_spi_remove_host(struct dw_spi *dws);
|
||||
extern int dw_spi_suspend_host(struct dw_spi *dws);
|
||||
extern int dw_spi_resume_host(struct dw_spi *dws);
|
||||
|
||||
@ -433,21 +433,12 @@ static int falcon_sflash_probe(struct platform_device *pdev)
|
||||
|
||||
platform_set_drvdata(pdev, priv);
|
||||
|
||||
ret = spi_register_master(master);
|
||||
ret = devm_spi_register_master(&pdev->dev, master);
|
||||
if (ret)
|
||||
spi_master_put(master);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int falcon_sflash_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct falcon_sflash *priv = platform_get_drvdata(pdev);
|
||||
|
||||
spi_unregister_master(priv->master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id falcon_sflash_match[] = {
|
||||
{ .compatible = "lantiq,sflash-falcon" },
|
||||
{},
|
||||
@ -456,7 +447,6 @@ MODULE_DEVICE_TABLE(of, falcon_sflash_match);
|
||||
|
||||
static struct platform_driver falcon_sflash_driver = {
|
||||
.probe = falcon_sflash_probe,
|
||||
.remove = falcon_sflash_remove,
|
||||
.driver = {
|
||||
.name = DRV_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
|
||||
@ -320,8 +320,10 @@ static void dspi_chipselect(struct spi_device *spi, int value)
|
||||
switch (value) {
|
||||
case BITBANG_CS_ACTIVE:
|
||||
pushr |= SPI_PUSHR_CONT;
|
||||
break;
|
||||
case BITBANG_CS_INACTIVE:
|
||||
pushr &= ~SPI_PUSHR_CONT;
|
||||
break;
|
||||
}
|
||||
|
||||
writel(pushr, dspi->base + SPI_PUSHR);
|
||||
@ -373,9 +375,6 @@ static int dspi_setup(struct spi_device *spi)
|
||||
if (!spi->max_speed_hz)
|
||||
return -EINVAL;
|
||||
|
||||
if (!spi->bits_per_word)
|
||||
spi->bits_per_word = 8;
|
||||
|
||||
return dspi_setup_transfer(spi, NULL);
|
||||
}
|
||||
|
||||
|
||||
@ -705,7 +705,7 @@ static int of_fsl_espi_probe(struct platform_device *ofdev)
|
||||
goto err;
|
||||
|
||||
irq = irq_of_parse_and_map(np, 0);
|
||||
if (!ret) {
|
||||
if (!irq) {
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
@ -727,6 +727,66 @@ static int of_fsl_espi_remove(struct platform_device *dev)
|
||||
return mpc8xxx_spi_remove(&dev->dev);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int of_fsl_espi_suspend(struct device *dev)
|
||||
{
|
||||
struct spi_master *master = dev_get_drvdata(dev);
|
||||
struct mpc8xxx_spi *mpc8xxx_spi;
|
||||
struct fsl_espi_reg *reg_base;
|
||||
u32 regval;
|
||||
int ret;
|
||||
|
||||
mpc8xxx_spi = spi_master_get_devdata(master);
|
||||
reg_base = mpc8xxx_spi->reg_base;
|
||||
|
||||
ret = spi_master_suspend(master);
|
||||
if (ret) {
|
||||
dev_warn(dev, "cannot suspend master\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
regval = mpc8xxx_spi_read_reg(®_base->mode);
|
||||
regval &= ~SPMODE_ENABLE;
|
||||
mpc8xxx_spi_write_reg(®_base->mode, regval);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int of_fsl_espi_resume(struct device *dev)
|
||||
{
|
||||
struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
|
||||
struct spi_master *master = dev_get_drvdata(dev);
|
||||
struct mpc8xxx_spi *mpc8xxx_spi;
|
||||
struct fsl_espi_reg *reg_base;
|
||||
u32 regval;
|
||||
int i;
|
||||
|
||||
mpc8xxx_spi = spi_master_get_devdata(master);
|
||||
reg_base = mpc8xxx_spi->reg_base;
|
||||
|
||||
/* SPI controller initializations */
|
||||
mpc8xxx_spi_write_reg(®_base->mode, 0);
|
||||
mpc8xxx_spi_write_reg(®_base->mask, 0);
|
||||
mpc8xxx_spi_write_reg(®_base->command, 0);
|
||||
mpc8xxx_spi_write_reg(®_base->event, 0xffffffff);
|
||||
|
||||
/* Init eSPI CS mode register */
|
||||
for (i = 0; i < pdata->max_chipselect; i++)
|
||||
mpc8xxx_spi_write_reg(®_base->csmode[i], CSMODE_INIT_VAL);
|
||||
|
||||
/* Enable SPI interface */
|
||||
regval = pdata->initial_spmode | SPMODE_INIT_VAL | SPMODE_ENABLE;
|
||||
|
||||
mpc8xxx_spi_write_reg(®_base->mode, regval);
|
||||
|
||||
return spi_master_resume(master);
|
||||
}
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
static const struct dev_pm_ops espi_pm = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(of_fsl_espi_suspend, of_fsl_espi_resume)
|
||||
};
|
||||
|
||||
static const struct of_device_id of_fsl_espi_match[] = {
|
||||
{ .compatible = "fsl,mpc8536-espi" },
|
||||
{}
|
||||
@ -738,6 +798,7 @@ static struct platform_driver fsl_espi_driver = {
|
||||
.name = "fsl_espi",
|
||||
.owner = THIS_MODULE,
|
||||
.of_match_table = of_fsl_espi_match,
|
||||
.pm = &espi_pm,
|
||||
},
|
||||
.probe = of_fsl_espi_probe,
|
||||
.remove = of_fsl_espi_remove,
|
||||
|
||||
@ -115,17 +115,17 @@ spi_to_pdata(const struct spi_device *spi)
|
||||
|
||||
static inline void setsck(const struct spi_device *spi, int is_on)
|
||||
{
|
||||
gpio_set_value(SPI_SCK_GPIO, is_on);
|
||||
gpio_set_value_cansleep(SPI_SCK_GPIO, is_on);
|
||||
}
|
||||
|
||||
static inline void setmosi(const struct spi_device *spi, int is_on)
|
||||
{
|
||||
gpio_set_value(SPI_MOSI_GPIO, is_on);
|
||||
gpio_set_value_cansleep(SPI_MOSI_GPIO, is_on);
|
||||
}
|
||||
|
||||
static inline int getmiso(const struct spi_device *spi)
|
||||
{
|
||||
return !!gpio_get_value(SPI_MISO_GPIO);
|
||||
return !!gpio_get_value_cansleep(SPI_MISO_GPIO);
|
||||
}
|
||||
|
||||
#undef pdata
|
||||
@ -229,7 +229,7 @@ static void spi_gpio_chipselect(struct spi_device *spi, int is_active)
|
||||
|
||||
if (cs != SPI_GPIO_NO_CHIPSELECT) {
|
||||
/* SPI is normally active-low */
|
||||
gpio_set_value(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
|
||||
gpio_set_value_cansleep(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -206,7 +206,8 @@ static unsigned int spi_imx_clkdiv_2(unsigned int fin,
|
||||
#define MX51_ECSPI_STAT_RR (1 << 3)
|
||||
|
||||
/* MX51 eCSPI */
|
||||
static unsigned int mx51_ecspi_clkdiv(unsigned int fin, unsigned int fspi)
|
||||
static unsigned int mx51_ecspi_clkdiv(unsigned int fin, unsigned int fspi,
|
||||
unsigned int *fres)
|
||||
{
|
||||
/*
|
||||
* there are two 4-bit dividers, the pre-divider divides by
|
||||
@ -234,6 +235,10 @@ static unsigned int mx51_ecspi_clkdiv(unsigned int fin, unsigned int fspi)
|
||||
|
||||
pr_debug("%s: fin: %u, fspi: %u, post: %u, pre: %u\n",
|
||||
__func__, fin, fspi, post, pre);
|
||||
|
||||
/* Resulting frequency for the SCLK line. */
|
||||
*fres = (fin / (pre + 1)) >> post;
|
||||
|
||||
return (pre << MX51_ECSPI_CTRL_PREDIV_OFFSET) |
|
||||
(post << MX51_ECSPI_CTRL_POSTDIV_OFFSET);
|
||||
}
|
||||
@ -264,6 +269,7 @@ static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx,
|
||||
struct spi_imx_config *config)
|
||||
{
|
||||
u32 ctrl = MX51_ECSPI_CTRL_ENABLE, cfg = 0;
|
||||
u32 clk = config->speed_hz, delay;
|
||||
|
||||
/*
|
||||
* The hardware seems to have a race condition when changing modes. The
|
||||
@ -275,7 +281,7 @@ static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx,
|
||||
ctrl |= MX51_ECSPI_CTRL_MODE_MASK;
|
||||
|
||||
/* set clock speed */
|
||||
ctrl |= mx51_ecspi_clkdiv(spi_imx->spi_clk, config->speed_hz);
|
||||
ctrl |= mx51_ecspi_clkdiv(spi_imx->spi_clk, config->speed_hz, &clk);
|
||||
|
||||
/* set chip select to use */
|
||||
ctrl |= MX51_ECSPI_CTRL_CS(config->cs);
|
||||
@ -297,6 +303,23 @@ static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx,
|
||||
writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
|
||||
writel(cfg, spi_imx->base + MX51_ECSPI_CONFIG);
|
||||
|
||||
/*
|
||||
* Wait until the changes in the configuration register CONFIGREG
|
||||
* propagate into the hardware. It takes exactly one tick of the
|
||||
* SCLK clock, but we will wait two SCLK clock just to be sure. The
|
||||
* effect of the delay it takes for the hardware to apply changes
|
||||
* is noticable if the SCLK clock run very slow. In such a case, if
|
||||
* the polarity of SCLK should be inverted, the GPIO ChipSelect might
|
||||
* be asserted before the SCLK polarity changes, which would disrupt
|
||||
* the SPI communication as the device on the other end would consider
|
||||
* the change of SCLK polarity as a clock tick already.
|
||||
*/
|
||||
delay = (2 * 1000000) / clk;
|
||||
if (likely(delay < 10)) /* SCLK is faster than 100 kHz */
|
||||
udelay(delay);
|
||||
else /* SCLK is _very_ slow */
|
||||
usleep_range(delay, delay + 10);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -504,7 +504,7 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
master->cleanup = mpc512x_psc_spi_cleanup;
|
||||
master->dev.of_node = dev->of_node;
|
||||
|
||||
tempp = ioremap(regaddr, size);
|
||||
tempp = devm_ioremap(dev, regaddr, size);
|
||||
if (!tempp) {
|
||||
dev_err(dev, "could not ioremap I/O port range\n");
|
||||
ret = -EFAULT;
|
||||
@ -513,9 +513,8 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
mps->psc = tempp;
|
||||
mps->fifo =
|
||||
(struct mpc512x_psc_fifo *)(tempp + sizeof(struct mpc52xx_psc));
|
||||
|
||||
ret = request_irq(mps->irq, mpc512x_psc_spi_isr, IRQF_SHARED,
|
||||
"mpc512x-psc-spi", mps);
|
||||
ret = devm_request_irq(dev, mps->irq, mpc512x_psc_spi_isr, IRQF_SHARED,
|
||||
"mpc512x-psc-spi", mps);
|
||||
if (ret)
|
||||
goto free_master;
|
||||
init_completion(&mps->txisrdone);
|
||||
@ -525,11 +524,11 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
clk = devm_clk_get(dev, clk_name);
|
||||
if (IS_ERR(clk)) {
|
||||
ret = PTR_ERR(clk);
|
||||
goto free_irq;
|
||||
goto free_master;
|
||||
}
|
||||
ret = clk_prepare_enable(clk);
|
||||
if (ret)
|
||||
goto free_irq;
|
||||
goto free_master;
|
||||
mps->clk_mclk = clk;
|
||||
mps->mclk_rate = clk_get_rate(clk);
|
||||
|
||||
@ -545,11 +544,7 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
|
||||
|
||||
free_clock:
|
||||
clk_disable_unprepare(mps->clk_mclk);
|
||||
free_irq:
|
||||
free_irq(mps->irq, mps);
|
||||
free_master:
|
||||
if (mps->psc)
|
||||
iounmap(mps->psc);
|
||||
spi_master_put(master);
|
||||
|
||||
return ret;
|
||||
@ -561,9 +556,6 @@ static int mpc512x_psc_spi_do_remove(struct device *dev)
|
||||
struct mpc512x_psc_spi *mps = spi_master_get_devdata(master);
|
||||
|
||||
clk_disable_unprepare(mps->clk_mclk);
|
||||
free_irq(mps->irq, mps);
|
||||
if (mps->psc)
|
||||
iounmap(mps->psc);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -111,14 +111,6 @@ static int mxs_spi_setup_transfer(struct spi_device *dev,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mxs_spi_setup(struct spi_device *dev)
|
||||
{
|
||||
if (!dev->bits_per_word)
|
||||
dev->bits_per_word = 8;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static u32 mxs_spi_cs_to_reg(unsigned cs)
|
||||
{
|
||||
u32 select = 0;
|
||||
@ -502,7 +494,6 @@ static int mxs_spi_probe(struct platform_device *pdev)
|
||||
return -ENOMEM;
|
||||
|
||||
master->transfer_one_message = mxs_spi_transfer_one;
|
||||
master->setup = mxs_spi_setup;
|
||||
master->bits_per_word_mask = SPI_BPW_MASK(8);
|
||||
master->mode_bits = SPI_CPOL | SPI_CPHA;
|
||||
master->num_chipselect = 3;
|
||||
|
||||
@ -57,7 +57,6 @@ struct nuc900_spi {
|
||||
const unsigned char *tx;
|
||||
unsigned char *rx;
|
||||
struct clk *clk;
|
||||
struct resource *ioarea;
|
||||
struct spi_master *master;
|
||||
struct spi_device *curdev;
|
||||
struct device *dev;
|
||||
@ -344,8 +343,7 @@ static int nuc900_spi_probe(struct platform_device *pdev)
|
||||
master = spi_alloc_master(&pdev->dev, sizeof(struct nuc900_spi));
|
||||
if (master == NULL) {
|
||||
dev_err(&pdev->dev, "No memory for spi_master\n");
|
||||
err = -ENOMEM;
|
||||
goto err_nomem;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
hw = spi_master_get_devdata(master);
|
||||
@ -370,46 +368,31 @@ static int nuc900_spi_probe(struct platform_device *pdev)
|
||||
hw->bitbang.txrx_bufs = nuc900_spi_txrx;
|
||||
|
||||
hw->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (hw->res == NULL) {
|
||||
dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
|
||||
err = -ENOENT;
|
||||
hw->regs = devm_ioremap_resource(&pdev->dev, hw->res);
|
||||
if (IS_ERR(hw->regs)) {
|
||||
err = PTR_ERR(hw->regs);
|
||||
goto err_pdata;
|
||||
}
|
||||
|
||||
hw->ioarea = request_mem_region(hw->res->start,
|
||||
resource_size(hw->res), pdev->name);
|
||||
|
||||
if (hw->ioarea == NULL) {
|
||||
dev_err(&pdev->dev, "Cannot reserve region\n");
|
||||
err = -ENXIO;
|
||||
goto err_pdata;
|
||||
}
|
||||
|
||||
hw->regs = ioremap(hw->res->start, resource_size(hw->res));
|
||||
if (hw->regs == NULL) {
|
||||
dev_err(&pdev->dev, "Cannot map IO\n");
|
||||
err = -ENXIO;
|
||||
goto err_iomap;
|
||||
}
|
||||
|
||||
hw->irq = platform_get_irq(pdev, 0);
|
||||
if (hw->irq < 0) {
|
||||
dev_err(&pdev->dev, "No IRQ specified\n");
|
||||
err = -ENOENT;
|
||||
goto err_irq;
|
||||
goto err_pdata;
|
||||
}
|
||||
|
||||
err = request_irq(hw->irq, nuc900_spi_irq, 0, pdev->name, hw);
|
||||
err = devm_request_irq(&pdev->dev, hw->irq, nuc900_spi_irq, 0,
|
||||
pdev->name, hw);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "Cannot claim IRQ\n");
|
||||
goto err_irq;
|
||||
goto err_pdata;
|
||||
}
|
||||
|
||||
hw->clk = clk_get(&pdev->dev, "spi");
|
||||
hw->clk = devm_clk_get(&pdev->dev, "spi");
|
||||
if (IS_ERR(hw->clk)) {
|
||||
dev_err(&pdev->dev, "No clock for device\n");
|
||||
err = PTR_ERR(hw->clk);
|
||||
goto err_clk;
|
||||
goto err_pdata;
|
||||
}
|
||||
|
||||
mfp_set_groupg(&pdev->dev, NULL);
|
||||
@ -425,17 +408,8 @@ static int nuc900_spi_probe(struct platform_device *pdev)
|
||||
|
||||
err_register:
|
||||
clk_disable(hw->clk);
|
||||
clk_put(hw->clk);
|
||||
err_clk:
|
||||
free_irq(hw->irq, hw);
|
||||
err_irq:
|
||||
iounmap(hw->regs);
|
||||
err_iomap:
|
||||
release_mem_region(hw->res->start, resource_size(hw->res));
|
||||
kfree(hw->ioarea);
|
||||
err_pdata:
|
||||
spi_master_put(hw->master);
|
||||
err_nomem:
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -443,18 +417,8 @@ static int nuc900_spi_remove(struct platform_device *dev)
|
||||
{
|
||||
struct nuc900_spi *hw = platform_get_drvdata(dev);
|
||||
|
||||
free_irq(hw->irq, hw);
|
||||
|
||||
spi_bitbang_stop(&hw->bitbang);
|
||||
|
||||
clk_disable(hw->clk);
|
||||
clk_put(hw->clk);
|
||||
|
||||
iounmap(hw->regs);
|
||||
|
||||
release_mem_region(hw->res->start, resource_size(hw->res));
|
||||
kfree(hw->ioarea);
|
||||
|
||||
spi_master_put(hw->master);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -153,62 +153,22 @@ static int tiny_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
|
||||
}
|
||||
|
||||
wait_for_completion(&hw->done);
|
||||
} else if (txp && rxp) {
|
||||
/* we need to tighten the transfer loop */
|
||||
writeb(*txp++, hw->base + TINY_SPI_TXDATA);
|
||||
if (t->len > 1) {
|
||||
writeb(*txp++, hw->base + TINY_SPI_TXDATA);
|
||||
for (i = 2; i < t->len; i++) {
|
||||
u8 rx, tx = *txp++;
|
||||
tiny_spi_wait_txr(hw);
|
||||
rx = readb(hw->base + TINY_SPI_TXDATA);
|
||||
writeb(tx, hw->base + TINY_SPI_TXDATA);
|
||||
*rxp++ = rx;
|
||||
}
|
||||
tiny_spi_wait_txr(hw);
|
||||
*rxp++ = readb(hw->base + TINY_SPI_TXDATA);
|
||||
}
|
||||
tiny_spi_wait_txe(hw);
|
||||
*rxp++ = readb(hw->base + TINY_SPI_RXDATA);
|
||||
} else if (rxp) {
|
||||
writeb(0, hw->base + TINY_SPI_TXDATA);
|
||||
if (t->len > 1) {
|
||||
writeb(0,
|
||||
hw->base + TINY_SPI_TXDATA);
|
||||
for (i = 2; i < t->len; i++) {
|
||||
u8 rx;
|
||||
tiny_spi_wait_txr(hw);
|
||||
rx = readb(hw->base + TINY_SPI_TXDATA);
|
||||
writeb(0, hw->base + TINY_SPI_TXDATA);
|
||||
*rxp++ = rx;
|
||||
}
|
||||
tiny_spi_wait_txr(hw);
|
||||
*rxp++ = readb(hw->base + TINY_SPI_TXDATA);
|
||||
}
|
||||
tiny_spi_wait_txe(hw);
|
||||
*rxp++ = readb(hw->base + TINY_SPI_RXDATA);
|
||||
} else if (txp) {
|
||||
writeb(*txp++, hw->base + TINY_SPI_TXDATA);
|
||||
if (t->len > 1) {
|
||||
writeb(*txp++, hw->base + TINY_SPI_TXDATA);
|
||||
for (i = 2; i < t->len; i++) {
|
||||
u8 tx = *txp++;
|
||||
tiny_spi_wait_txr(hw);
|
||||
writeb(tx, hw->base + TINY_SPI_TXDATA);
|
||||
}
|
||||
}
|
||||
tiny_spi_wait_txe(hw);
|
||||
} else {
|
||||
writeb(0, hw->base + TINY_SPI_TXDATA);
|
||||
if (t->len > 1) {
|
||||
writeb(0, hw->base + TINY_SPI_TXDATA);
|
||||
for (i = 2; i < t->len; i++) {
|
||||
/* we need to tighten the transfer loop */
|
||||
writeb(txp ? *txp++ : 0, hw->base + TINY_SPI_TXDATA);
|
||||
for (i = 1; i < t->len; i++) {
|
||||
writeb(txp ? *txp++ : 0, hw->base + TINY_SPI_TXDATA);
|
||||
|
||||
if (rxp || (i != t->len - 1))
|
||||
tiny_spi_wait_txr(hw);
|
||||
writeb(0, hw->base + TINY_SPI_TXDATA);
|
||||
}
|
||||
if (rxp)
|
||||
*rxp++ = readb(hw->base + TINY_SPI_TXDATA);
|
||||
}
|
||||
tiny_spi_wait_txe(hw);
|
||||
if (rxp)
|
||||
*rxp++ = readb(hw->base + TINY_SPI_RXDATA);
|
||||
}
|
||||
|
||||
return t->len;
|
||||
}
|
||||
|
||||
|
||||
@ -470,31 +470,12 @@ err:
|
||||
return status;
|
||||
}
|
||||
|
||||
static int omap1_spi100k_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct spi_master *master;
|
||||
struct omap1_spi100k *spi100k;
|
||||
struct resource *r;
|
||||
int status = 0;
|
||||
|
||||
master = platform_get_drvdata(pdev);
|
||||
spi100k = spi_master_get_devdata(master);
|
||||
|
||||
if (status != 0)
|
||||
return status;
|
||||
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver omap1_spi100k_driver = {
|
||||
.driver = {
|
||||
.name = "omap1_spi100k",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = omap1_spi100k_probe,
|
||||
.remove = omap1_spi100k_remove,
|
||||
};
|
||||
|
||||
module_platform_driver(omap1_spi100k_driver);
|
||||
@ -502,4 +483,3 @@ module_platform_driver(omap1_spi100k_driver);
|
||||
MODULE_DESCRIPTION("OMAP7xx SPI 100k controller driver");
|
||||
MODULE_AUTHOR("Fabrice Crohas <fcrohas@gmail.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
|
||||
@ -157,14 +157,14 @@ static inline void mcspi_write_reg(struct spi_master *master,
|
||||
{
|
||||
struct omap2_mcspi *mcspi = spi_master_get_devdata(master);
|
||||
|
||||
__raw_writel(val, mcspi->base + idx);
|
||||
writel_relaxed(val, mcspi->base + idx);
|
||||
}
|
||||
|
||||
static inline u32 mcspi_read_reg(struct spi_master *master, int idx)
|
||||
{
|
||||
struct omap2_mcspi *mcspi = spi_master_get_devdata(master);
|
||||
|
||||
return __raw_readl(mcspi->base + idx);
|
||||
return readl_relaxed(mcspi->base + idx);
|
||||
}
|
||||
|
||||
static inline void mcspi_write_cs_reg(const struct spi_device *spi,
|
||||
@ -172,14 +172,14 @@ static inline void mcspi_write_cs_reg(const struct spi_device *spi,
|
||||
{
|
||||
struct omap2_mcspi_cs *cs = spi->controller_state;
|
||||
|
||||
__raw_writel(val, cs->base + idx);
|
||||
writel_relaxed(val, cs->base + idx);
|
||||
}
|
||||
|
||||
static inline u32 mcspi_read_cs_reg(const struct spi_device *spi, int idx)
|
||||
{
|
||||
struct omap2_mcspi_cs *cs = spi->controller_state;
|
||||
|
||||
return __raw_readl(cs->base + idx);
|
||||
return readl_relaxed(cs->base + idx);
|
||||
}
|
||||
|
||||
static inline u32 mcspi_cached_chconf0(const struct spi_device *spi)
|
||||
@ -338,7 +338,7 @@ static void omap2_mcspi_restore_ctx(struct omap2_mcspi *mcspi)
|
||||
mcspi_write_reg(spi_cntrl, OMAP2_MCSPI_WAKEUPENABLE, ctx->wakeupenable);
|
||||
|
||||
list_for_each_entry(cs, &ctx->cs, node)
|
||||
__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
|
||||
writel_relaxed(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
|
||||
}
|
||||
|
||||
static int mcspi_wait_for_reg_bit(void __iomem *reg, unsigned long bit)
|
||||
@ -346,9 +346,9 @@ static int mcspi_wait_for_reg_bit(void __iomem *reg, unsigned long bit)
|
||||
unsigned long timeout;
|
||||
|
||||
timeout = jiffies + msecs_to_jiffies(1000);
|
||||
while (!(__raw_readl(reg) & bit)) {
|
||||
while (!(readl_relaxed(reg) & bit)) {
|
||||
if (time_after(jiffies, timeout)) {
|
||||
if (!(__raw_readl(reg) & bit))
|
||||
if (!(readl_relaxed(reg) & bit))
|
||||
return -ETIMEDOUT;
|
||||
else
|
||||
return 0;
|
||||
@ -675,7 +675,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
}
|
||||
dev_vdbg(&spi->dev, "write-%d %02x\n",
|
||||
word_len, *tx);
|
||||
__raw_writel(*tx++, tx_reg);
|
||||
writel_relaxed(*tx++, tx_reg);
|
||||
}
|
||||
if (rx != NULL) {
|
||||
if (mcspi_wait_for_reg_bit(chstat_reg,
|
||||
@ -687,7 +687,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
if (c == 1 && tx == NULL &&
|
||||
(l & OMAP2_MCSPI_CHCONF_TURBO)) {
|
||||
omap2_mcspi_set_enable(spi, 0);
|
||||
*rx++ = __raw_readl(rx_reg);
|
||||
*rx++ = readl_relaxed(rx_reg);
|
||||
dev_vdbg(&spi->dev, "read-%d %02x\n",
|
||||
word_len, *(rx - 1));
|
||||
if (mcspi_wait_for_reg_bit(chstat_reg,
|
||||
@ -701,7 +701,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
omap2_mcspi_set_enable(spi, 0);
|
||||
}
|
||||
|
||||
*rx++ = __raw_readl(rx_reg);
|
||||
*rx++ = readl_relaxed(rx_reg);
|
||||
dev_vdbg(&spi->dev, "read-%d %02x\n",
|
||||
word_len, *(rx - 1));
|
||||
}
|
||||
@ -722,7 +722,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
}
|
||||
dev_vdbg(&spi->dev, "write-%d %04x\n",
|
||||
word_len, *tx);
|
||||
__raw_writel(*tx++, tx_reg);
|
||||
writel_relaxed(*tx++, tx_reg);
|
||||
}
|
||||
if (rx != NULL) {
|
||||
if (mcspi_wait_for_reg_bit(chstat_reg,
|
||||
@ -734,7 +734,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
if (c == 2 && tx == NULL &&
|
||||
(l & OMAP2_MCSPI_CHCONF_TURBO)) {
|
||||
omap2_mcspi_set_enable(spi, 0);
|
||||
*rx++ = __raw_readl(rx_reg);
|
||||
*rx++ = readl_relaxed(rx_reg);
|
||||
dev_vdbg(&spi->dev, "read-%d %04x\n",
|
||||
word_len, *(rx - 1));
|
||||
if (mcspi_wait_for_reg_bit(chstat_reg,
|
||||
@ -748,7 +748,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
omap2_mcspi_set_enable(spi, 0);
|
||||
}
|
||||
|
||||
*rx++ = __raw_readl(rx_reg);
|
||||
*rx++ = readl_relaxed(rx_reg);
|
||||
dev_vdbg(&spi->dev, "read-%d %04x\n",
|
||||
word_len, *(rx - 1));
|
||||
}
|
||||
@ -769,7 +769,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
}
|
||||
dev_vdbg(&spi->dev, "write-%d %08x\n",
|
||||
word_len, *tx);
|
||||
__raw_writel(*tx++, tx_reg);
|
||||
writel_relaxed(*tx++, tx_reg);
|
||||
}
|
||||
if (rx != NULL) {
|
||||
if (mcspi_wait_for_reg_bit(chstat_reg,
|
||||
@ -781,7 +781,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
if (c == 4 && tx == NULL &&
|
||||
(l & OMAP2_MCSPI_CHCONF_TURBO)) {
|
||||
omap2_mcspi_set_enable(spi, 0);
|
||||
*rx++ = __raw_readl(rx_reg);
|
||||
*rx++ = readl_relaxed(rx_reg);
|
||||
dev_vdbg(&spi->dev, "read-%d %08x\n",
|
||||
word_len, *(rx - 1));
|
||||
if (mcspi_wait_for_reg_bit(chstat_reg,
|
||||
@ -795,7 +795,7 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
|
||||
omap2_mcspi_set_enable(spi, 0);
|
||||
}
|
||||
|
||||
*rx++ = __raw_readl(rx_reg);
|
||||
*rx++ = readl_relaxed(rx_reg);
|
||||
dev_vdbg(&spi->dev, "read-%d %08x\n",
|
||||
word_len, *(rx - 1));
|
||||
}
|
||||
@ -1107,7 +1107,7 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m)
|
||||
|
||||
/* RX_ONLY mode needs dummy data in TX reg */
|
||||
if (t->tx_buf == NULL)
|
||||
__raw_writel(0, cs->base
|
||||
writel_relaxed(0, cs->base
|
||||
+ OMAP2_MCSPI_TX0);
|
||||
|
||||
if ((mcspi_dma->dma_rx && mcspi_dma->dma_tx) &&
|
||||
@ -1470,9 +1470,9 @@ static int omap2_mcspi_resume(struct device *dev)
|
||||
* change in account.
|
||||
*/
|
||||
cs->chconf0 |= OMAP2_MCSPI_CHCONF_FORCE;
|
||||
__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
|
||||
writel_relaxed(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
|
||||
cs->chconf0 &= ~OMAP2_MCSPI_CHCONF_FORCE;
|
||||
__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
|
||||
writel_relaxed(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
|
||||
}
|
||||
}
|
||||
pm_runtime_mark_last_busy(mcspi->dev);
|
||||
|
||||
@ -434,7 +434,7 @@ static int orion_spi_probe(struct platform_device *pdev)
|
||||
spi = spi_master_get_devdata(master);
|
||||
spi->master = master;
|
||||
|
||||
spi->clk = clk_get(&pdev->dev, NULL);
|
||||
spi->clk = devm_clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(spi->clk)) {
|
||||
status = PTR_ERR(spi->clk);
|
||||
goto out;
|
||||
@ -465,7 +465,6 @@ static int orion_spi_probe(struct platform_device *pdev)
|
||||
|
||||
out_rel_clk:
|
||||
clk_disable_unprepare(spi->clk);
|
||||
clk_put(spi->clk);
|
||||
out:
|
||||
spi_master_put(master);
|
||||
return status;
|
||||
@ -481,7 +480,6 @@ static int orion_spi_remove(struct platform_device *pdev)
|
||||
spi = spi_master_get_devdata(master);
|
||||
|
||||
clk_disable_unprepare(spi->clk);
|
||||
clk_put(spi->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -62,7 +62,7 @@ static void ce4100_spi_remove(struct pci_dev *dev)
|
||||
platform_device_unregister(pdev);
|
||||
}
|
||||
|
||||
static DEFINE_PCI_DEVICE_TABLE(ce4100_spi_devices) = {
|
||||
static const struct pci_device_id ce4100_spi_devices[] = {
|
||||
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2e6a) },
|
||||
{ },
|
||||
};
|
||||
|
||||
@ -1066,6 +1066,8 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
|
||||
|
||||
pdata->num_chipselect = 1;
|
||||
pdata->enable_dma = true;
|
||||
pdata->tx_chan_id = -1;
|
||||
pdata->rx_chan_id = -1;
|
||||
|
||||
return pdata;
|
||||
}
|
||||
@ -1266,7 +1268,7 @@ static void pxa2xx_spi_shutdown(struct platform_device *pdev)
|
||||
dev_err(&pdev->dev, "shutdown failed with %d\n", status);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int pxa2xx_spi_suspend(struct device *dev)
|
||||
{
|
||||
struct driver_data *drv_data = dev_get_drvdata(dev);
|
||||
|
||||
@ -37,117 +37,145 @@
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/spi/rspi.h>
|
||||
|
||||
#define RSPI_SPCR 0x00
|
||||
#define RSPI_SSLP 0x01
|
||||
#define RSPI_SPPCR 0x02
|
||||
#define RSPI_SPSR 0x03
|
||||
#define RSPI_SPDR 0x04
|
||||
#define RSPI_SPSCR 0x08
|
||||
#define RSPI_SPSSR 0x09
|
||||
#define RSPI_SPBR 0x0a
|
||||
#define RSPI_SPDCR 0x0b
|
||||
#define RSPI_SPCKD 0x0c
|
||||
#define RSPI_SSLND 0x0d
|
||||
#define RSPI_SPND 0x0e
|
||||
#define RSPI_SPCR2 0x0f
|
||||
#define RSPI_SPCMD0 0x10
|
||||
#define RSPI_SPCMD1 0x12
|
||||
#define RSPI_SPCMD2 0x14
|
||||
#define RSPI_SPCMD3 0x16
|
||||
#define RSPI_SPCMD4 0x18
|
||||
#define RSPI_SPCMD5 0x1a
|
||||
#define RSPI_SPCMD6 0x1c
|
||||
#define RSPI_SPCMD7 0x1e
|
||||
#define RSPI_SPCR 0x00 /* Control Register */
|
||||
#define RSPI_SSLP 0x01 /* Slave Select Polarity Register */
|
||||
#define RSPI_SPPCR 0x02 /* Pin Control Register */
|
||||
#define RSPI_SPSR 0x03 /* Status Register */
|
||||
#define RSPI_SPDR 0x04 /* Data Register */
|
||||
#define RSPI_SPSCR 0x08 /* Sequence Control Register */
|
||||
#define RSPI_SPSSR 0x09 /* Sequence Status Register */
|
||||
#define RSPI_SPBR 0x0a /* Bit Rate Register */
|
||||
#define RSPI_SPDCR 0x0b /* Data Control Register */
|
||||
#define RSPI_SPCKD 0x0c /* Clock Delay Register */
|
||||
#define RSPI_SSLND 0x0d /* Slave Select Negation Delay Register */
|
||||
#define RSPI_SPND 0x0e /* Next-Access Delay Register */
|
||||
#define RSPI_SPCR2 0x0f /* Control Register 2 */
|
||||
#define RSPI_SPCMD0 0x10 /* Command Register 0 */
|
||||
#define RSPI_SPCMD1 0x12 /* Command Register 1 */
|
||||
#define RSPI_SPCMD2 0x14 /* Command Register 2 */
|
||||
#define RSPI_SPCMD3 0x16 /* Command Register 3 */
|
||||
#define RSPI_SPCMD4 0x18 /* Command Register 4 */
|
||||
#define RSPI_SPCMD5 0x1a /* Command Register 5 */
|
||||
#define RSPI_SPCMD6 0x1c /* Command Register 6 */
|
||||
#define RSPI_SPCMD7 0x1e /* Command Register 7 */
|
||||
#define RSPI_SPBFCR 0x20 /* Buffer Control Register */
|
||||
#define RSPI_SPBFDR 0x22 /* Buffer Data Count Setting Register */
|
||||
|
||||
/*qspi only */
|
||||
#define QSPI_SPBFCR 0x18
|
||||
#define QSPI_SPBDCR 0x1a
|
||||
#define QSPI_SPBMUL0 0x1c
|
||||
#define QSPI_SPBMUL1 0x20
|
||||
#define QSPI_SPBMUL2 0x24
|
||||
#define QSPI_SPBMUL3 0x28
|
||||
#define QSPI_SPBFCR 0x18 /* Buffer Control Register */
|
||||
#define QSPI_SPBDCR 0x1a /* Buffer Data Count Register */
|
||||
#define QSPI_SPBMUL0 0x1c /* Transfer Data Length Multiplier Setting Register 0 */
|
||||
#define QSPI_SPBMUL1 0x20 /* Transfer Data Length Multiplier Setting Register 1 */
|
||||
#define QSPI_SPBMUL2 0x24 /* Transfer Data Length Multiplier Setting Register 2 */
|
||||
#define QSPI_SPBMUL3 0x28 /* Transfer Data Length Multiplier Setting Register 3 */
|
||||
|
||||
/* SPCR */
|
||||
#define SPCR_SPRIE 0x80
|
||||
#define SPCR_SPE 0x40
|
||||
#define SPCR_SPTIE 0x20
|
||||
#define SPCR_SPEIE 0x10
|
||||
#define SPCR_MSTR 0x08
|
||||
#define SPCR_MODFEN 0x04
|
||||
#define SPCR_TXMD 0x02
|
||||
#define SPCR_SPMS 0x01
|
||||
/* SPCR - Control Register */
|
||||
#define SPCR_SPRIE 0x80 /* Receive Interrupt Enable */
|
||||
#define SPCR_SPE 0x40 /* Function Enable */
|
||||
#define SPCR_SPTIE 0x20 /* Transmit Interrupt Enable */
|
||||
#define SPCR_SPEIE 0x10 /* Error Interrupt Enable */
|
||||
#define SPCR_MSTR 0x08 /* Master/Slave Mode Select */
|
||||
#define SPCR_MODFEN 0x04 /* Mode Fault Error Detection Enable */
|
||||
/* RSPI on SH only */
|
||||
#define SPCR_TXMD 0x02 /* TX Only Mode (vs. Full Duplex) */
|
||||
#define SPCR_SPMS 0x01 /* 3-wire Mode (vs. 4-wire) */
|
||||
/* QSPI on R-Car M2 only */
|
||||
#define SPCR_WSWAP 0x02 /* Word Swap of read-data for DMAC */
|
||||
#define SPCR_BSWAP 0x01 /* Byte Swap of read-data for DMAC */
|
||||
|
||||
/* SSLP */
|
||||
#define SSLP_SSL1P 0x02
|
||||
#define SSLP_SSL0P 0x01
|
||||
/* SSLP - Slave Select Polarity Register */
|
||||
#define SSLP_SSL1P 0x02 /* SSL1 Signal Polarity Setting */
|
||||
#define SSLP_SSL0P 0x01 /* SSL0 Signal Polarity Setting */
|
||||
|
||||
/* SPPCR */
|
||||
#define SPPCR_MOIFE 0x20
|
||||
#define SPPCR_MOIFV 0x10
|
||||
/* SPPCR - Pin Control Register */
|
||||
#define SPPCR_MOIFE 0x20 /* MOSI Idle Value Fixing Enable */
|
||||
#define SPPCR_MOIFV 0x10 /* MOSI Idle Fixed Value */
|
||||
#define SPPCR_SPOM 0x04
|
||||
#define SPPCR_SPLP2 0x02
|
||||
#define SPPCR_SPLP 0x01
|
||||
#define SPPCR_SPLP2 0x02 /* Loopback Mode 2 (non-inverting) */
|
||||
#define SPPCR_SPLP 0x01 /* Loopback Mode (inverting) */
|
||||
|
||||
/* SPSR */
|
||||
#define SPSR_SPRF 0x80
|
||||
#define SPSR_SPTEF 0x20
|
||||
#define SPSR_PERF 0x08
|
||||
#define SPSR_MODF 0x04
|
||||
#define SPSR_IDLNF 0x02
|
||||
#define SPSR_OVRF 0x01
|
||||
#define SPPCR_IO3FV 0x04 /* Single-/Dual-SPI Mode IO3 Output Fixed Value */
|
||||
#define SPPCR_IO2FV 0x04 /* Single-/Dual-SPI Mode IO2 Output Fixed Value */
|
||||
|
||||
/* SPSCR */
|
||||
#define SPSCR_SPSLN_MASK 0x07
|
||||
/* SPSR - Status Register */
|
||||
#define SPSR_SPRF 0x80 /* Receive Buffer Full Flag */
|
||||
#define SPSR_TEND 0x40 /* Transmit End */
|
||||
#define SPSR_SPTEF 0x20 /* Transmit Buffer Empty Flag */
|
||||
#define SPSR_PERF 0x08 /* Parity Error Flag */
|
||||
#define SPSR_MODF 0x04 /* Mode Fault Error Flag */
|
||||
#define SPSR_IDLNF 0x02 /* RSPI Idle Flag */
|
||||
#define SPSR_OVRF 0x01 /* Overrun Error Flag */
|
||||
|
||||
/* SPSSR */
|
||||
#define SPSSR_SPECM_MASK 0x70
|
||||
#define SPSSR_SPCP_MASK 0x07
|
||||
/* SPSCR - Sequence Control Register */
|
||||
#define SPSCR_SPSLN_MASK 0x07 /* Sequence Length Specification */
|
||||
|
||||
/* SPDCR */
|
||||
#define SPDCR_SPLW 0x20
|
||||
#define SPDCR_SPRDTD 0x10
|
||||
/* SPSSR - Sequence Status Register */
|
||||
#define SPSSR_SPECM_MASK 0x70 /* Command Error Mask */
|
||||
#define SPSSR_SPCP_MASK 0x07 /* Command Pointer Mask */
|
||||
|
||||
/* SPDCR - Data Control Register */
|
||||
#define SPDCR_TXDMY 0x80 /* Dummy Data Transmission Enable */
|
||||
#define SPDCR_SPLW1 0x40 /* Access Width Specification (RZ) */
|
||||
#define SPDCR_SPLW0 0x20 /* Access Width Specification (RZ) */
|
||||
#define SPDCR_SPLLWORD (SPDCR_SPLW1 | SPDCR_SPLW0)
|
||||
#define SPDCR_SPLWORD SPDCR_SPLW1
|
||||
#define SPDCR_SPLBYTE SPDCR_SPLW0
|
||||
#define SPDCR_SPLW 0x20 /* Access Width Specification (SH) */
|
||||
#define SPDCR_SPRDTD 0x10 /* Receive Transmit Data Select */
|
||||
#define SPDCR_SLSEL1 0x08
|
||||
#define SPDCR_SLSEL0 0x04
|
||||
#define SPDCR_SLSEL_MASK 0x0c
|
||||
#define SPDCR_SLSEL_MASK 0x0c /* SSL1 Output Select */
|
||||
#define SPDCR_SPFC1 0x02
|
||||
#define SPDCR_SPFC0 0x01
|
||||
#define SPDCR_SPFC_MASK 0x03 /* Frame Count Setting (1-4) */
|
||||
|
||||
/* SPCKD */
|
||||
#define SPCKD_SCKDL_MASK 0x07
|
||||
/* SPCKD - Clock Delay Register */
|
||||
#define SPCKD_SCKDL_MASK 0x07 /* Clock Delay Setting (1-8) */
|
||||
|
||||
/* SSLND */
|
||||
#define SSLND_SLNDL_MASK 0x07
|
||||
/* SSLND - Slave Select Negation Delay Register */
|
||||
#define SSLND_SLNDL_MASK 0x07 /* SSL Negation Delay Setting (1-8) */
|
||||
|
||||
/* SPND */
|
||||
#define SPND_SPNDL_MASK 0x07
|
||||
/* SPND - Next-Access Delay Register */
|
||||
#define SPND_SPNDL_MASK 0x07 /* Next-Access Delay Setting (1-8) */
|
||||
|
||||
/* SPCR2 */
|
||||
#define SPCR2_PTE 0x08
|
||||
#define SPCR2_SPIE 0x04
|
||||
#define SPCR2_SPOE 0x02
|
||||
#define SPCR2_SPPE 0x01
|
||||
/* SPCR2 - Control Register 2 */
|
||||
#define SPCR2_PTE 0x08 /* Parity Self-Test Enable */
|
||||
#define SPCR2_SPIE 0x04 /* Idle Interrupt Enable */
|
||||
#define SPCR2_SPOE 0x02 /* Odd Parity Enable (vs. Even) */
|
||||
#define SPCR2_SPPE 0x01 /* Parity Enable */
|
||||
|
||||
/* SPCMDn */
|
||||
#define SPCMD_SCKDEN 0x8000
|
||||
#define SPCMD_SLNDEN 0x4000
|
||||
#define SPCMD_SPNDEN 0x2000
|
||||
#define SPCMD_LSBF 0x1000
|
||||
#define SPCMD_SPB_MASK 0x0f00
|
||||
/* SPCMDn - Command Registers */
|
||||
#define SPCMD_SCKDEN 0x8000 /* Clock Delay Setting Enable */
|
||||
#define SPCMD_SLNDEN 0x4000 /* SSL Negation Delay Setting Enable */
|
||||
#define SPCMD_SPNDEN 0x2000 /* Next-Access Delay Enable */
|
||||
#define SPCMD_LSBF 0x1000 /* LSB First */
|
||||
#define SPCMD_SPB_MASK 0x0f00 /* Data Length Setting */
|
||||
#define SPCMD_SPB_8_TO_16(bit) (((bit - 1) << 8) & SPCMD_SPB_MASK)
|
||||
#define SPCMD_SPB_8BIT 0x0000 /* qspi only */
|
||||
#define SPCMD_SPB_16BIT 0x0100
|
||||
#define SPCMD_SPB_20BIT 0x0000
|
||||
#define SPCMD_SPB_24BIT 0x0100
|
||||
#define SPCMD_SPB_32BIT 0x0200
|
||||
#define SPCMD_SSLKP 0x0080
|
||||
#define SPCMD_SSLA_MASK 0x0030
|
||||
#define SPCMD_BRDV_MASK 0x000c
|
||||
#define SPCMD_CPOL 0x0002
|
||||
#define SPCMD_CPHA 0x0001
|
||||
#define SPCMD_SSLKP 0x0080 /* SSL Signal Level Keeping */
|
||||
#define SPCMD_SPIMOD_MASK 0x0060 /* SPI Operating Mode (QSPI only) */
|
||||
#define SPCMD_SPIMOD1 0x0040
|
||||
#define SPCMD_SPIMOD0 0x0020
|
||||
#define SPCMD_SPIMOD_SINGLE 0
|
||||
#define SPCMD_SPIMOD_DUAL SPCMD_SPIMOD0
|
||||
#define SPCMD_SPIMOD_QUAD SPCMD_SPIMOD1
|
||||
#define SPCMD_SPRW 0x0010 /* SPI Read/Write Access (Dual/Quad) */
|
||||
#define SPCMD_SSLA_MASK 0x0030 /* SSL Assert Signal Setting (RSPI) */
|
||||
#define SPCMD_BRDV_MASK 0x000c /* Bit Rate Division Setting */
|
||||
#define SPCMD_CPOL 0x0002 /* Clock Polarity Setting */
|
||||
#define SPCMD_CPHA 0x0001 /* Clock Phase Setting */
|
||||
|
||||
/* SPBFCR */
|
||||
#define SPBFCR_TXRST 0x80 /* qspi only */
|
||||
#define SPBFCR_RXRST 0x40 /* qspi only */
|
||||
/* SPBFCR - Buffer Control Register */
|
||||
#define SPBFCR_TXRST 0x80 /* Transmit Buffer Data Reset (qspi only) */
|
||||
#define SPBFCR_RXRST 0x40 /* Receive Buffer Data Reset (qspi only) */
|
||||
#define SPBFCR_TXTRG_MASK 0x30 /* Transmit Buffer Data Triggering Number */
|
||||
#define SPBFCR_RXTRG_MASK 0x07 /* Receive Buffer Data Triggering Number */
|
||||
|
||||
#define DUMMY_DATA 0x00
|
||||
|
||||
struct rspi_data {
|
||||
void __iomem *addr;
|
||||
@ -158,7 +186,8 @@ struct rspi_data {
|
||||
wait_queue_head_t wait;
|
||||
spinlock_t lock;
|
||||
struct clk *clk;
|
||||
unsigned char spsr;
|
||||
u8 spsr;
|
||||
u16 spcmd;
|
||||
const struct spi_ops *ops;
|
||||
|
||||
/* for dmaengine */
|
||||
@ -170,34 +199,35 @@ struct rspi_data {
|
||||
unsigned dma_callbacked:1;
|
||||
};
|
||||
|
||||
static void rspi_write8(struct rspi_data *rspi, u8 data, u16 offset)
|
||||
static void rspi_write8(const struct rspi_data *rspi, u8 data, u16 offset)
|
||||
{
|
||||
iowrite8(data, rspi->addr + offset);
|
||||
}
|
||||
|
||||
static void rspi_write16(struct rspi_data *rspi, u16 data, u16 offset)
|
||||
static void rspi_write16(const struct rspi_data *rspi, u16 data, u16 offset)
|
||||
{
|
||||
iowrite16(data, rspi->addr + offset);
|
||||
}
|
||||
|
||||
static void rspi_write32(struct rspi_data *rspi, u32 data, u16 offset)
|
||||
static void rspi_write32(const struct rspi_data *rspi, u32 data, u16 offset)
|
||||
{
|
||||
iowrite32(data, rspi->addr + offset);
|
||||
}
|
||||
|
||||
static u8 rspi_read8(struct rspi_data *rspi, u16 offset)
|
||||
static u8 rspi_read8(const struct rspi_data *rspi, u16 offset)
|
||||
{
|
||||
return ioread8(rspi->addr + offset);
|
||||
}
|
||||
|
||||
static u16 rspi_read16(struct rspi_data *rspi, u16 offset)
|
||||
static u16 rspi_read16(const struct rspi_data *rspi, u16 offset)
|
||||
{
|
||||
return ioread16(rspi->addr + offset);
|
||||
}
|
||||
|
||||
/* optional functions */
|
||||
struct spi_ops {
|
||||
int (*set_config_register)(struct rspi_data *rspi, int access_size);
|
||||
int (*set_config_register)(const struct rspi_data *rspi,
|
||||
int access_size);
|
||||
int (*send_pio)(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
struct spi_transfer *t);
|
||||
int (*receive_pio)(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
@ -208,7 +238,8 @@ struct spi_ops {
|
||||
/*
|
||||
* functions for RSPI
|
||||
*/
|
||||
static int rspi_set_config_register(struct rspi_data *rspi, int access_size)
|
||||
static int rspi_set_config_register(const struct rspi_data *rspi,
|
||||
int access_size)
|
||||
{
|
||||
int spbr;
|
||||
|
||||
@ -231,7 +262,7 @@ static int rspi_set_config_register(struct rspi_data *rspi, int access_size)
|
||||
rspi_write8(rspi, 0x00, RSPI_SPCR2);
|
||||
|
||||
/* Sets SPCMD */
|
||||
rspi_write16(rspi, SPCMD_SPB_8_TO_16(access_size) | SPCMD_SSLKP,
|
||||
rspi_write16(rspi, SPCMD_SPB_8_TO_16(access_size) | rspi->spcmd,
|
||||
RSPI_SPCMD0);
|
||||
|
||||
/* Sets RSPI mode */
|
||||
@ -243,7 +274,8 @@ static int rspi_set_config_register(struct rspi_data *rspi, int access_size)
|
||||
/*
|
||||
* functions for QSPI
|
||||
*/
|
||||
static int qspi_set_config_register(struct rspi_data *rspi, int access_size)
|
||||
static int qspi_set_config_register(const struct rspi_data *rspi,
|
||||
int access_size)
|
||||
{
|
||||
u16 spcmd;
|
||||
int spbr;
|
||||
@ -268,10 +300,10 @@ static int qspi_set_config_register(struct rspi_data *rspi, int access_size)
|
||||
spcmd = SPCMD_SPB_8BIT;
|
||||
else if (access_size == 16)
|
||||
spcmd = SPCMD_SPB_16BIT;
|
||||
else if (access_size == 32)
|
||||
else
|
||||
spcmd = SPCMD_SPB_32BIT;
|
||||
|
||||
spcmd |= SPCMD_SCKDEN | SPCMD_SLNDEN | SPCMD_SSLKP | SPCMD_SPNDEN;
|
||||
spcmd |= SPCMD_SCKDEN | SPCMD_SLNDEN | rspi->spcmd | SPCMD_SPNDEN;
|
||||
|
||||
/* Resets transfer data length */
|
||||
rspi_write32(rspi, 0, QSPI_SPBMUL0);
|
||||
@ -292,12 +324,12 @@ static int qspi_set_config_register(struct rspi_data *rspi, int access_size)
|
||||
|
||||
#define set_config_register(spi, n) spi->ops->set_config_register(spi, n)
|
||||
|
||||
static void rspi_enable_irq(struct rspi_data *rspi, u8 enable)
|
||||
static void rspi_enable_irq(const struct rspi_data *rspi, u8 enable)
|
||||
{
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | enable, RSPI_SPCR);
|
||||
}
|
||||
|
||||
static void rspi_disable_irq(struct rspi_data *rspi, u8 disable)
|
||||
static void rspi_disable_irq(const struct rspi_data *rspi, u8 disable)
|
||||
{
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~disable, RSPI_SPCR);
|
||||
}
|
||||
@ -316,12 +348,12 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void rspi_assert_ssl(struct rspi_data *rspi)
|
||||
static void rspi_assert_ssl(const struct rspi_data *rspi)
|
||||
{
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | SPCR_SPE, RSPI_SPCR);
|
||||
}
|
||||
|
||||
static void rspi_negate_ssl(struct rspi_data *rspi)
|
||||
static void rspi_negate_ssl(const struct rspi_data *rspi)
|
||||
{
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~SPCR_SPE, RSPI_SPCR);
|
||||
}
|
||||
@ -330,9 +362,7 @@ static int rspi_send_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
struct spi_transfer *t)
|
||||
{
|
||||
int remain = t->len;
|
||||
u8 *data;
|
||||
|
||||
data = (u8 *)t->tx_buf;
|
||||
const u8 *data = t->tx_buf;
|
||||
while (remain > 0) {
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) | SPCR_TXMD,
|
||||
RSPI_SPCR);
|
||||
@ -348,7 +378,7 @@ static int rspi_send_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
remain--;
|
||||
}
|
||||
|
||||
/* Waiting for the last transmition */
|
||||
/* Waiting for the last transmission */
|
||||
rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
|
||||
|
||||
return 0;
|
||||
@ -358,12 +388,11 @@ static int qspi_send_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
struct spi_transfer *t)
|
||||
{
|
||||
int remain = t->len;
|
||||
u8 *data;
|
||||
const u8 *data = t->tx_buf;
|
||||
|
||||
rspi_write8(rspi, SPBFCR_TXRST, QSPI_SPBFCR);
|
||||
rspi_write8(rspi, 0x00, QSPI_SPBFCR);
|
||||
|
||||
data = (u8 *)t->tx_buf;
|
||||
while (remain > 0) {
|
||||
|
||||
if (rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE) < 0) {
|
||||
@ -383,7 +412,7 @@ static int qspi_send_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
remain--;
|
||||
}
|
||||
|
||||
/* Waiting for the last transmition */
|
||||
/* Waiting for the last transmission */
|
||||
rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
|
||||
|
||||
return 0;
|
||||
@ -399,8 +428,8 @@ static void rspi_dma_complete(void *arg)
|
||||
wake_up_interruptible(&rspi->wait);
|
||||
}
|
||||
|
||||
static int rspi_dma_map_sg(struct scatterlist *sg, void *buf, unsigned len,
|
||||
struct dma_chan *chan,
|
||||
static int rspi_dma_map_sg(struct scatterlist *sg, const void *buf,
|
||||
unsigned len, struct dma_chan *chan,
|
||||
enum dma_transfer_direction dir)
|
||||
{
|
||||
sg_init_table(sg, 1);
|
||||
@ -440,12 +469,13 @@ static void rspi_memory_from_8bit(void *buf, const void *data, unsigned len)
|
||||
static int rspi_send_dma(struct rspi_data *rspi, struct spi_transfer *t)
|
||||
{
|
||||
struct scatterlist sg;
|
||||
void *buf = NULL;
|
||||
const void *buf = NULL;
|
||||
struct dma_async_tx_descriptor *desc;
|
||||
unsigned len;
|
||||
int ret = 0;
|
||||
|
||||
if (rspi->dma_width_16bit) {
|
||||
void *tmp;
|
||||
/*
|
||||
* If DMAC bus width is 16-bit, the driver allocates a dummy
|
||||
* buffer. And, the driver converts original data into the
|
||||
@ -454,13 +484,14 @@ static int rspi_send_dma(struct rspi_data *rspi, struct spi_transfer *t)
|
||||
* DMAC data: 1st byte, dummy, 2nd byte, dummy ...
|
||||
*/
|
||||
len = t->len * 2;
|
||||
buf = kmalloc(len, GFP_KERNEL);
|
||||
if (!buf)
|
||||
tmp = kmalloc(len, GFP_KERNEL);
|
||||
if (!tmp)
|
||||
return -ENOMEM;
|
||||
rspi_memory_to_8bit(buf, t->tx_buf, t->len);
|
||||
rspi_memory_to_8bit(tmp, t->tx_buf, t->len);
|
||||
buf = tmp;
|
||||
} else {
|
||||
len = t->len;
|
||||
buf = (void *)t->tx_buf;
|
||||
buf = t->tx_buf;
|
||||
}
|
||||
|
||||
if (!rspi_dma_map_sg(&sg, buf, len, rspi->chan_tx, DMA_TO_DEVICE)) {
|
||||
@ -508,16 +539,16 @@ end_nomap:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void rspi_receive_init(struct rspi_data *rspi)
|
||||
static void rspi_receive_init(const struct rspi_data *rspi)
|
||||
{
|
||||
unsigned char spsr;
|
||||
u8 spsr;
|
||||
|
||||
spsr = rspi_read8(rspi, RSPI_SPSR);
|
||||
if (spsr & SPSR_SPRF)
|
||||
rspi_read16(rspi, RSPI_SPDR); /* dummy read */
|
||||
if (spsr & SPSR_OVRF)
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPSR) & ~SPSR_OVRF,
|
||||
RSPI_SPCR);
|
||||
RSPI_SPSR);
|
||||
}
|
||||
|
||||
static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
@ -528,7 +559,7 @@ static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
|
||||
rspi_receive_init(rspi);
|
||||
|
||||
data = (u8 *)t->rx_buf;
|
||||
data = t->rx_buf;
|
||||
while (remain > 0) {
|
||||
rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~SPCR_TXMD,
|
||||
RSPI_SPCR);
|
||||
@ -539,7 +570,7 @@ static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
/* dummy write for generate clock */
|
||||
rspi_write16(rspi, 0x00, RSPI_SPDR);
|
||||
rspi_write16(rspi, DUMMY_DATA, RSPI_SPDR);
|
||||
|
||||
if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) {
|
||||
dev_err(&rspi->master->dev,
|
||||
@ -556,9 +587,9 @@ static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void qspi_receive_init(struct rspi_data *rspi)
|
||||
static void qspi_receive_init(const struct rspi_data *rspi)
|
||||
{
|
||||
unsigned char spsr;
|
||||
u8 spsr;
|
||||
|
||||
spsr = rspi_read8(rspi, RSPI_SPSR);
|
||||
if (spsr & SPSR_SPRF)
|
||||
@ -575,7 +606,7 @@ static int qspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
|
||||
qspi_receive_init(rspi);
|
||||
|
||||
data = (u8 *)t->rx_buf;
|
||||
data = t->rx_buf;
|
||||
while (remain > 0) {
|
||||
|
||||
if (rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE) < 0) {
|
||||
@ -584,7 +615,7 @@ static int qspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
/* dummy write for generate clock */
|
||||
rspi_write8(rspi, 0x00, RSPI_SPDR);
|
||||
rspi_write8(rspi, DUMMY_DATA, RSPI_SPDR);
|
||||
|
||||
if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) {
|
||||
dev_err(&rspi->master->dev,
|
||||
@ -704,7 +735,7 @@ end_nomap:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rspi_is_dma(struct rspi_data *rspi, struct spi_transfer *t)
|
||||
static int rspi_is_dma(const struct rspi_data *rspi, struct spi_transfer *t)
|
||||
{
|
||||
if (t->tx_buf && rspi->chan_tx)
|
||||
return 1;
|
||||
@ -771,10 +802,14 @@ static int rspi_setup(struct spi_device *spi)
|
||||
{
|
||||
struct rspi_data *rspi = spi_master_get_devdata(spi->master);
|
||||
|
||||
if (!spi->bits_per_word)
|
||||
spi->bits_per_word = 8;
|
||||
rspi->max_speed_hz = spi->max_speed_hz;
|
||||
|
||||
rspi->spcmd = SPCMD_SSLKP;
|
||||
if (spi->mode & SPI_CPOL)
|
||||
rspi->spcmd |= SPCMD_CPOL;
|
||||
if (spi->mode & SPI_CPHA)
|
||||
rspi->spcmd |= SPCMD_CPHA;
|
||||
|
||||
set_config_register(rspi, 8);
|
||||
|
||||
return 0;
|
||||
@ -802,10 +837,10 @@ static void rspi_cleanup(struct spi_device *spi)
|
||||
|
||||
static irqreturn_t rspi_irq(int irq, void *_sr)
|
||||
{
|
||||
struct rspi_data *rspi = (struct rspi_data *)_sr;
|
||||
unsigned long spsr;
|
||||
struct rspi_data *rspi = _sr;
|
||||
u8 spsr;
|
||||
irqreturn_t ret = IRQ_NONE;
|
||||
unsigned char disable_irq = 0;
|
||||
u8 disable_irq = 0;
|
||||
|
||||
rspi->spsr = spsr = rspi_read8(rspi, RSPI_SPSR);
|
||||
if (spsr & SPSR_SPRF)
|
||||
@ -825,7 +860,7 @@ static irqreturn_t rspi_irq(int irq, void *_sr)
|
||||
static int rspi_request_dma(struct rspi_data *rspi,
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev);
|
||||
const struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev);
|
||||
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
dma_cap_mask_t mask;
|
||||
struct dma_slave_config cfg;
|
||||
@ -887,11 +922,8 @@ static int rspi_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct rspi_data *rspi = platform_get_drvdata(pdev);
|
||||
|
||||
spi_unregister_master(rspi->master);
|
||||
rspi_release_dma(rspi);
|
||||
free_irq(platform_get_irq(pdev, 0), rspi);
|
||||
clk_put(rspi->clk);
|
||||
iounmap(rspi->addr);
|
||||
clk_disable(rspi->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -903,7 +935,7 @@ static int rspi_probe(struct platform_device *pdev)
|
||||
struct rspi_data *rspi;
|
||||
int ret, irq;
|
||||
char clk_name[16];
|
||||
struct rspi_plat_data *rspi_pd = pdev->dev.platform_data;
|
||||
const struct rspi_plat_data *rspi_pd = dev_get_platdata(&pdev->dev);
|
||||
const struct spi_ops *ops;
|
||||
const struct platform_device_id *id_entry = pdev->id_entry;
|
||||
|
||||
@ -913,12 +945,6 @@ static int rspi_probe(struct platform_device *pdev)
|
||||
dev_err(&pdev->dev, "there is no set_config_register\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
/* get base addr */
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (unlikely(res == NULL)) {
|
||||
dev_err(&pdev->dev, "invalid resource\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0) {
|
||||
@ -936,19 +962,20 @@ static int rspi_probe(struct platform_device *pdev)
|
||||
platform_set_drvdata(pdev, rspi);
|
||||
rspi->ops = ops;
|
||||
rspi->master = master;
|
||||
rspi->addr = ioremap(res->start, resource_size(res));
|
||||
if (rspi->addr == NULL) {
|
||||
dev_err(&pdev->dev, "ioremap error.\n");
|
||||
ret = -ENOMEM;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
rspi->addr = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(rspi->addr)) {
|
||||
ret = PTR_ERR(rspi->addr);
|
||||
goto error1;
|
||||
}
|
||||
|
||||
snprintf(clk_name, sizeof(clk_name), "%s%d", id_entry->name, pdev->id);
|
||||
rspi->clk = clk_get(&pdev->dev, clk_name);
|
||||
rspi->clk = devm_clk_get(&pdev->dev, clk_name);
|
||||
if (IS_ERR(rspi->clk)) {
|
||||
dev_err(&pdev->dev, "cannot get clock\n");
|
||||
ret = PTR_ERR(rspi->clk);
|
||||
goto error2;
|
||||
goto error1;
|
||||
}
|
||||
clk_enable(rspi->clk);
|
||||
|
||||
@ -957,45 +984,45 @@ static int rspi_probe(struct platform_device *pdev)
|
||||
INIT_WORK(&rspi->ws, rspi_work);
|
||||
init_waitqueue_head(&rspi->wait);
|
||||
|
||||
master->num_chipselect = rspi_pd->num_chipselect;
|
||||
if (!master->num_chipselect)
|
||||
if (rspi_pd && rspi_pd->num_chipselect)
|
||||
master->num_chipselect = rspi_pd->num_chipselect;
|
||||
else
|
||||
master->num_chipselect = 2; /* default */
|
||||
|
||||
master->bus_num = pdev->id;
|
||||
master->setup = rspi_setup;
|
||||
master->transfer = rspi_transfer;
|
||||
master->cleanup = rspi_cleanup;
|
||||
master->mode_bits = SPI_CPHA | SPI_CPOL;
|
||||
|
||||
ret = request_irq(irq, rspi_irq, 0, dev_name(&pdev->dev), rspi);
|
||||
ret = devm_request_irq(&pdev->dev, irq, rspi_irq, 0,
|
||||
dev_name(&pdev->dev), rspi);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "request_irq error\n");
|
||||
goto error3;
|
||||
goto error2;
|
||||
}
|
||||
|
||||
rspi->irq = irq;
|
||||
ret = rspi_request_dma(rspi, pdev);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "rspi_request_dma failed.\n");
|
||||
goto error4;
|
||||
goto error3;
|
||||
}
|
||||
|
||||
ret = spi_register_master(master);
|
||||
ret = devm_spi_register_master(&pdev->dev, master);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "spi_register_master error.\n");
|
||||
goto error4;
|
||||
goto error3;
|
||||
}
|
||||
|
||||
dev_info(&pdev->dev, "probed\n");
|
||||
|
||||
return 0;
|
||||
|
||||
error4:
|
||||
rspi_release_dma(rspi);
|
||||
free_irq(irq, rspi);
|
||||
error3:
|
||||
clk_put(rspi->clk);
|
||||
rspi_release_dma(rspi);
|
||||
error2:
|
||||
iounmap(rspi->addr);
|
||||
clk_disable(rspi->clk);
|
||||
error1:
|
||||
spi_master_put(master);
|
||||
|
||||
|
||||
@ -29,7 +29,6 @@
|
||||
|
||||
#include <plat/regs-spi.h>
|
||||
|
||||
#include <plat/fiq.h>
|
||||
#include <asm/fiq.h>
|
||||
|
||||
#include "spi-s3c24xx-fiq.h"
|
||||
@ -78,14 +77,12 @@ struct s3c24xx_spi {
|
||||
unsigned char *rx;
|
||||
|
||||
struct clk *clk;
|
||||
struct resource *ioarea;
|
||||
struct spi_master *master;
|
||||
struct spi_device *curdev;
|
||||
struct device *dev;
|
||||
struct s3c2410_spi_info *pdata;
|
||||
};
|
||||
|
||||
|
||||
#define SPCON_DEFAULT (S3C2410_SPCON_MSTR | S3C2410_SPCON_SMOD_INT)
|
||||
#define SPPIN_DEFAULT (S3C2410_SPPIN_KEEP)
|
||||
|
||||
@ -517,8 +514,7 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
|
||||
master = spi_alloc_master(&pdev->dev, sizeof(struct s3c24xx_spi));
|
||||
if (master == NULL) {
|
||||
dev_err(&pdev->dev, "No memory for spi_master\n");
|
||||
err = -ENOMEM;
|
||||
goto err_nomem;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
hw = spi_master_get_devdata(master);
|
||||
@ -562,48 +558,32 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
|
||||
dev_dbg(hw->dev, "bitbang at %p\n", &hw->bitbang);
|
||||
|
||||
/* find and map our resources */
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (res == NULL) {
|
||||
dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
|
||||
err = -ENOENT;
|
||||
goto err_no_iores;
|
||||
}
|
||||
|
||||
hw->ioarea = request_mem_region(res->start, resource_size(res),
|
||||
pdev->name);
|
||||
|
||||
if (hw->ioarea == NULL) {
|
||||
dev_err(&pdev->dev, "Cannot reserve region\n");
|
||||
err = -ENXIO;
|
||||
goto err_no_iores;
|
||||
}
|
||||
|
||||
hw->regs = ioremap(res->start, resource_size(res));
|
||||
if (hw->regs == NULL) {
|
||||
dev_err(&pdev->dev, "Cannot map IO\n");
|
||||
err = -ENXIO;
|
||||
goto err_no_iomap;
|
||||
hw->regs = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(hw->regs)) {
|
||||
err = PTR_ERR(hw->regs);
|
||||
goto err_no_pdata;
|
||||
}
|
||||
|
||||
hw->irq = platform_get_irq(pdev, 0);
|
||||
if (hw->irq < 0) {
|
||||
dev_err(&pdev->dev, "No IRQ specified\n");
|
||||
err = -ENOENT;
|
||||
goto err_no_irq;
|
||||
goto err_no_pdata;
|
||||
}
|
||||
|
||||
err = request_irq(hw->irq, s3c24xx_spi_irq, 0, pdev->name, hw);
|
||||
err = devm_request_irq(&pdev->dev, hw->irq, s3c24xx_spi_irq, 0,
|
||||
pdev->name, hw);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "Cannot claim IRQ\n");
|
||||
goto err_no_irq;
|
||||
goto err_no_pdata;
|
||||
}
|
||||
|
||||
hw->clk = clk_get(&pdev->dev, "spi");
|
||||
hw->clk = devm_clk_get(&pdev->dev, "spi");
|
||||
if (IS_ERR(hw->clk)) {
|
||||
dev_err(&pdev->dev, "No clock for device\n");
|
||||
err = PTR_ERR(hw->clk);
|
||||
goto err_no_clk;
|
||||
goto err_no_pdata;
|
||||
}
|
||||
|
||||
/* setup any gpio we can */
|
||||
@ -615,7 +595,8 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
|
||||
goto err_register;
|
||||
}
|
||||
|
||||
err = gpio_request(pdata->pin_cs, dev_name(&pdev->dev));
|
||||
err = devm_gpio_request(&pdev->dev, pdata->pin_cs,
|
||||
dev_name(&pdev->dev));
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "Failed to get gpio for cs\n");
|
||||
goto err_register;
|
||||
@ -639,27 +620,10 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
|
||||
return 0;
|
||||
|
||||
err_register:
|
||||
if (hw->set_cs == s3c24xx_spi_gpiocs)
|
||||
gpio_free(pdata->pin_cs);
|
||||
|
||||
clk_disable(hw->clk);
|
||||
clk_put(hw->clk);
|
||||
|
||||
err_no_clk:
|
||||
free_irq(hw->irq, hw);
|
||||
|
||||
err_no_irq:
|
||||
iounmap(hw->regs);
|
||||
|
||||
err_no_iomap:
|
||||
release_resource(hw->ioarea);
|
||||
kfree(hw->ioarea);
|
||||
|
||||
err_no_iores:
|
||||
err_no_pdata:
|
||||
spi_master_put(hw->master);
|
||||
|
||||
err_nomem:
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -668,19 +632,7 @@ static int s3c24xx_spi_remove(struct platform_device *dev)
|
||||
struct s3c24xx_spi *hw = platform_get_drvdata(dev);
|
||||
|
||||
spi_bitbang_stop(&hw->bitbang);
|
||||
|
||||
clk_disable(hw->clk);
|
||||
clk_put(hw->clk);
|
||||
|
||||
free_irq(hw->irq, hw);
|
||||
iounmap(hw->regs);
|
||||
|
||||
if (hw->set_cs == s3c24xx_spi_gpiocs)
|
||||
gpio_free(hw->pdata->pin_cs);
|
||||
|
||||
release_resource(hw->ioarea);
|
||||
kfree(hw->ioarea);
|
||||
|
||||
spi_master_put(hw->master);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -890,7 +890,7 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,
|
||||
unsigned long flags;
|
||||
int use_dma;
|
||||
|
||||
reinit_completion(&sdd->xfer_completion);
|
||||
reinit_completion(&sdd->xfer_completion);
|
||||
|
||||
/* Only BPW and Speed may change across transfers */
|
||||
bpw = xfer->bits_per_word;
|
||||
@ -927,9 +927,6 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,
|
||||
/* Start the signals */
|
||||
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
|
||||
|
||||
/* Start the signals */
|
||||
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
|
||||
|
||||
spin_unlock_irqrestore(&sdd->lock, flags);
|
||||
|
||||
status = wait_for_xfer(sdd, xfer, use_dma);
|
||||
|
||||
@ -183,18 +183,11 @@ static int sc18is602_setup_transfer(struct sc18is602 *hw, u32 hz, u8 mode)
|
||||
static int sc18is602_check_transfer(struct spi_device *spi,
|
||||
struct spi_transfer *t, int tlen)
|
||||
{
|
||||
int bpw;
|
||||
uint32_t hz;
|
||||
|
||||
if (t && t->len + tlen > SC18IS602_BUFSIZ)
|
||||
return -EINVAL;
|
||||
|
||||
bpw = spi->bits_per_word;
|
||||
if (t && t->bits_per_word)
|
||||
bpw = t->bits_per_word;
|
||||
if (bpw != 8)
|
||||
return -EINVAL;
|
||||
|
||||
hz = spi->max_speed_hz;
|
||||
if (t && t->speed_hz)
|
||||
hz = t->speed_hz;
|
||||
@ -254,9 +247,6 @@ error:
|
||||
|
||||
static int sc18is602_setup(struct spi_device *spi)
|
||||
{
|
||||
if (!spi->bits_per_word)
|
||||
spi->bits_per_word = 8;
|
||||
|
||||
if (spi->mode & ~(SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST))
|
||||
return -EINVAL;
|
||||
|
||||
@ -315,11 +305,12 @@ static int sc18is602_probe(struct i2c_client *client,
|
||||
}
|
||||
master->bus_num = client->adapter->nr;
|
||||
master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST;
|
||||
master->bits_per_word_mask = SPI_BPW_MASK(8);
|
||||
master->setup = sc18is602_setup;
|
||||
master->transfer_one_message = sc18is602_transfer_one;
|
||||
master->dev.of_node = np;
|
||||
|
||||
error = spi_register_master(master);
|
||||
error = devm_spi_register_master(dev, master);
|
||||
if (error)
|
||||
goto error_reg;
|
||||
|
||||
@ -330,16 +321,6 @@ error_reg:
|
||||
return error;
|
||||
}
|
||||
|
||||
static int sc18is602_remove(struct i2c_client *client)
|
||||
{
|
||||
struct sc18is602 *hw = i2c_get_clientdata(client);
|
||||
struct spi_master *master = hw->master;
|
||||
|
||||
spi_unregister_master(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id sc18is602_id[] = {
|
||||
{ "sc18is602", sc18is602 },
|
||||
{ "sc18is602b", sc18is602b },
|
||||
@ -353,7 +334,6 @@ static struct i2c_driver sc18is602_driver = {
|
||||
.name = "sc18is602",
|
||||
},
|
||||
.probe = sc18is602_probe,
|
||||
.remove = sc18is602_remove,
|
||||
.id_table = sc18is602_id,
|
||||
};
|
||||
|
||||
|
||||
@ -197,7 +197,7 @@ static int hspi_transfer_one_message(struct spi_master *master,
|
||||
|
||||
hspi_write(hspi, SPTBR, tx);
|
||||
|
||||
/* wait recive */
|
||||
/* wait receive */
|
||||
ret = hspi_status_check_timeout(hspi, 0x4, 0x4);
|
||||
if (ret < 0)
|
||||
break;
|
||||
@ -353,4 +353,4 @@ module_platform_driver(hspi_driver);
|
||||
MODULE_DESCRIPTION("SuperH HSPI bus driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|
||||
MODULE_ALIAS("platform:sh_spi");
|
||||
MODULE_ALIAS("platform:sh-hspi");
|
||||
|
||||
@ -152,7 +152,7 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p,
|
||||
size_t k;
|
||||
|
||||
if (!WARN_ON(!spi_hz || !parent_rate))
|
||||
div = parent_rate / spi_hz;
|
||||
div = DIV_ROUND_UP(parent_rate, spi_hz);
|
||||
|
||||
/* TODO: make more fine grained */
|
||||
|
||||
@ -169,7 +169,7 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p,
|
||||
|
||||
static void sh_msiof_spi_set_pin_regs(struct sh_msiof_spi_priv *p,
|
||||
u32 cpol, u32 cpha,
|
||||
u32 tx_hi_z, u32 lsb_first)
|
||||
u32 tx_hi_z, u32 lsb_first, u32 cs_high)
|
||||
{
|
||||
u32 tmp;
|
||||
int edge;
|
||||
@ -182,8 +182,12 @@ static void sh_msiof_spi_set_pin_regs(struct sh_msiof_spi_priv *p,
|
||||
* 1 1 11 11 1 1
|
||||
*/
|
||||
sh_msiof_write(p, FCTR, 0);
|
||||
sh_msiof_write(p, TMDR1, 0xe2000005 | (lsb_first << 24));
|
||||
sh_msiof_write(p, RMDR1, 0x22000005 | (lsb_first << 24));
|
||||
|
||||
tmp = 0;
|
||||
tmp |= !cs_high << 25;
|
||||
tmp |= lsb_first << 24;
|
||||
sh_msiof_write(p, TMDR1, 0xe0000005 | tmp);
|
||||
sh_msiof_write(p, RMDR1, 0x20000005 | tmp);
|
||||
|
||||
tmp = 0xa0000000;
|
||||
tmp |= cpol << 30; /* TSCKIZ */
|
||||
@ -417,11 +421,12 @@ static void sh_msiof_spi_chipselect(struct spi_device *spi, int is_on)
|
||||
sh_msiof_spi_set_pin_regs(p, !!(spi->mode & SPI_CPOL),
|
||||
!!(spi->mode & SPI_CPHA),
|
||||
!!(spi->mode & SPI_3WIRE),
|
||||
!!(spi->mode & SPI_LSB_FIRST));
|
||||
!!(spi->mode & SPI_LSB_FIRST),
|
||||
!!(spi->mode & SPI_CS_HIGH));
|
||||
}
|
||||
|
||||
/* use spi->controller data for CS (same strategy as spi_gpio) */
|
||||
gpio_set_value((unsigned)spi->controller_data, value);
|
||||
gpio_set_value((uintptr_t)spi->controller_data, value);
|
||||
|
||||
if (is_on == BITBANG_CS_INACTIVE) {
|
||||
if (test_and_clear_bit(0, &p->flags)) {
|
||||
@ -635,8 +640,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
|
||||
master = spi_alloc_master(&pdev->dev, sizeof(struct sh_msiof_spi_priv));
|
||||
if (master == NULL) {
|
||||
dev_err(&pdev->dev, "failed to allocate spi master\n");
|
||||
ret = -ENOMEM;
|
||||
goto err0;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
p = spi_master_get_devdata(master);
|
||||
@ -655,32 +659,38 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
|
||||
|
||||
init_completion(&p->done);
|
||||
|
||||
p->clk = clk_get(&pdev->dev, NULL);
|
||||
p->clk = devm_clk_get(&pdev->dev, NULL);
|
||||
if (IS_ERR(p->clk)) {
|
||||
dev_err(&pdev->dev, "cannot get clock\n");
|
||||
ret = PTR_ERR(p->clk);
|
||||
goto err1;
|
||||
}
|
||||
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
i = platform_get_irq(pdev, 0);
|
||||
if (!r || i < 0) {
|
||||
dev_err(&pdev->dev, "cannot get platform resources\n");
|
||||
if (i < 0) {
|
||||
dev_err(&pdev->dev, "cannot get platform IRQ\n");
|
||||
ret = -ENOENT;
|
||||
goto err2;
|
||||
}
|
||||
p->mapbase = ioremap_nocache(r->start, resource_size(r));
|
||||
if (!p->mapbase) {
|
||||
dev_err(&pdev->dev, "unable to ioremap\n");
|
||||
ret = -ENXIO;
|
||||
goto err2;
|
||||
goto err1;
|
||||
}
|
||||
|
||||
ret = request_irq(i, sh_msiof_spi_irq, 0,
|
||||
dev_name(&pdev->dev), p);
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
p->mapbase = devm_ioremap_resource(&pdev->dev, r);
|
||||
if (IS_ERR(p->mapbase)) {
|
||||
ret = PTR_ERR(p->mapbase);
|
||||
goto err1;
|
||||
}
|
||||
|
||||
ret = devm_request_irq(&pdev->dev, i, sh_msiof_spi_irq, 0,
|
||||
dev_name(&pdev->dev), p);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "unable to request irq\n");
|
||||
goto err3;
|
||||
goto err1;
|
||||
}
|
||||
|
||||
ret = clk_prepare(p->clk);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "unable to prepare clock\n");
|
||||
goto err1;
|
||||
}
|
||||
|
||||
p->pdev = pdev;
|
||||
@ -719,13 +729,9 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
|
||||
return 0;
|
||||
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
err3:
|
||||
iounmap(p->mapbase);
|
||||
err2:
|
||||
clk_put(p->clk);
|
||||
clk_unprepare(p->clk);
|
||||
err1:
|
||||
spi_master_put(master);
|
||||
err0:
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -737,9 +743,7 @@ static int sh_msiof_spi_remove(struct platform_device *pdev)
|
||||
ret = spi_bitbang_stop(&p->bitbang);
|
||||
if (!ret) {
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
free_irq(platform_get_irq(pdev, 0), p);
|
||||
iounmap(p->mapbase);
|
||||
clk_put(p->clk);
|
||||
clk_unprepare(p->clk);
|
||||
spi_master_put(p->bitbang.master);
|
||||
}
|
||||
return ret;
|
||||
|
||||
@ -171,7 +171,6 @@ static int spi_sh_send(struct spi_sh_data *ss, struct spi_message *mesg,
|
||||
int remain = t->len;
|
||||
int cur_len;
|
||||
unsigned char *data;
|
||||
unsigned long tmp;
|
||||
long ret;
|
||||
|
||||
if (t->len)
|
||||
@ -213,9 +212,7 @@ static int spi_sh_send(struct spi_sh_data *ss, struct spi_message *mesg,
|
||||
}
|
||||
|
||||
if (list_is_last(&t->transfer_list, &mesg->transfers)) {
|
||||
tmp = spi_sh_read(ss, SPI_SH_CR1);
|
||||
tmp = tmp & ~(SPI_SH_SSD | SPI_SH_SSDB);
|
||||
spi_sh_write(ss, tmp, SPI_SH_CR1);
|
||||
spi_sh_clear_bit(ss, SPI_SH_SSD | SPI_SH_SSDB, SPI_SH_CR1);
|
||||
spi_sh_set_bit(ss, SPI_SH_SSA, SPI_SH_CR1);
|
||||
|
||||
ss->cr1 &= ~SPI_SH_TBE;
|
||||
@ -239,7 +236,6 @@ static int spi_sh_receive(struct spi_sh_data *ss, struct spi_message *mesg,
|
||||
int remain = t->len;
|
||||
int cur_len;
|
||||
unsigned char *data;
|
||||
unsigned long tmp;
|
||||
long ret;
|
||||
|
||||
if (t->len > SPI_SH_MAX_BYTE)
|
||||
@ -247,9 +243,7 @@ static int spi_sh_receive(struct spi_sh_data *ss, struct spi_message *mesg,
|
||||
else
|
||||
spi_sh_write(ss, t->len, SPI_SH_CR3);
|
||||
|
||||
tmp = spi_sh_read(ss, SPI_SH_CR1);
|
||||
tmp = tmp & ~(SPI_SH_SSD | SPI_SH_SSDB);
|
||||
spi_sh_write(ss, tmp, SPI_SH_CR1);
|
||||
spi_sh_clear_bit(ss, SPI_SH_SSD | SPI_SH_SSDB, SPI_SH_CR1);
|
||||
spi_sh_set_bit(ss, SPI_SH_SSA, SPI_SH_CR1);
|
||||
|
||||
spi_sh_wait_write_buffer_empty(ss);
|
||||
@ -358,9 +352,6 @@ static int spi_sh_setup(struct spi_device *spi)
|
||||
{
|
||||
struct spi_sh_data *ss = spi_master_get_devdata(spi->master);
|
||||
|
||||
if (!spi->bits_per_word)
|
||||
spi->bits_per_word = 8;
|
||||
|
||||
pr_debug("%s: enter\n", __func__);
|
||||
|
||||
spi_sh_write(ss, 0xfe, SPI_SH_CR1); /* SPI sycle stop */
|
||||
|
||||
@ -536,16 +536,9 @@ spi_sirfsoc_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
|
||||
|
||||
static int spi_sirfsoc_setup(struct spi_device *spi)
|
||||
{
|
||||
struct sirfsoc_spi *sspi;
|
||||
|
||||
if (!spi->max_speed_hz)
|
||||
return -EINVAL;
|
||||
|
||||
sspi = spi_master_get_devdata(spi->master);
|
||||
|
||||
if (!spi->bits_per_word)
|
||||
spi->bits_per_word = 8;
|
||||
|
||||
return spi_sirfsoc_setup_transfer(spi, NULL);
|
||||
}
|
||||
|
||||
|
||||
@ -54,11 +54,8 @@
|
||||
#define SPI_CS_SS_VAL (1 << 20)
|
||||
#define SPI_CS_SW_HW (1 << 21)
|
||||
/* SPI_CS_POL_INACTIVE bits are default high */
|
||||
#define SPI_CS_POL_INACTIVE 22
|
||||
#define SPI_CS_POL_INACTIVE_0 (1 << 22)
|
||||
#define SPI_CS_POL_INACTIVE_1 (1 << 23)
|
||||
#define SPI_CS_POL_INACTIVE_2 (1 << 24)
|
||||
#define SPI_CS_POL_INACTIVE_3 (1 << 25)
|
||||
/* n from 0 to 3 */
|
||||
#define SPI_CS_POL_INACTIVE(n) (1 << (22 + (n)))
|
||||
#define SPI_CS_POL_INACTIVE_MASK (0xF << 22)
|
||||
|
||||
#define SPI_CS_SEL_0 (0 << 26)
|
||||
@ -165,9 +162,6 @@
|
||||
#define MAX_HOLD_CYCLES 16
|
||||
#define SPI_DEFAULT_SPEED 25000000
|
||||
|
||||
#define MAX_CHIP_SELECT 4
|
||||
#define SPI_FIFO_DEPTH 64
|
||||
|
||||
struct tegra_spi_data {
|
||||
struct device *dev;
|
||||
struct spi_master *master;
|
||||
@ -184,7 +178,6 @@ struct tegra_spi_data {
|
||||
struct spi_device *cur_spi;
|
||||
struct spi_device *cs_control;
|
||||
unsigned cur_pos;
|
||||
unsigned cur_len;
|
||||
unsigned words_per_32bit;
|
||||
unsigned bytes_per_word;
|
||||
unsigned curr_dma_words;
|
||||
@ -204,12 +197,10 @@ struct tegra_spi_data {
|
||||
u32 rx_status;
|
||||
u32 status_reg;
|
||||
bool is_packed;
|
||||
unsigned long packed_size;
|
||||
|
||||
u32 command1_reg;
|
||||
u32 dma_control_reg;
|
||||
u32 def_command1_reg;
|
||||
u32 spi_cs_timing;
|
||||
|
||||
struct completion xfer_completion;
|
||||
struct spi_transfer *curr_xfer;
|
||||
@ -227,14 +218,14 @@ struct tegra_spi_data {
|
||||
static int tegra_spi_runtime_suspend(struct device *dev);
|
||||
static int tegra_spi_runtime_resume(struct device *dev);
|
||||
|
||||
static inline unsigned long tegra_spi_readl(struct tegra_spi_data *tspi,
|
||||
static inline u32 tegra_spi_readl(struct tegra_spi_data *tspi,
|
||||
unsigned long reg)
|
||||
{
|
||||
return readl(tspi->base + reg);
|
||||
}
|
||||
|
||||
static inline void tegra_spi_writel(struct tegra_spi_data *tspi,
|
||||
unsigned long val, unsigned long reg)
|
||||
u32 val, unsigned long reg)
|
||||
{
|
||||
writel(val, tspi->base + reg);
|
||||
|
||||
@ -245,7 +236,7 @@ static inline void tegra_spi_writel(struct tegra_spi_data *tspi,
|
||||
|
||||
static void tegra_spi_clear_status(struct tegra_spi_data *tspi)
|
||||
{
|
||||
unsigned long val;
|
||||
u32 val;
|
||||
|
||||
/* Write 1 to clear status register */
|
||||
val = tegra_spi_readl(tspi, SPI_TRANS_STATUS);
|
||||
@ -296,10 +287,9 @@ static unsigned tegra_spi_fill_tx_fifo_from_client_txbuf(
|
||||
{
|
||||
unsigned nbytes;
|
||||
unsigned tx_empty_count;
|
||||
unsigned long fifo_status;
|
||||
u32 fifo_status;
|
||||
unsigned max_n_32bit;
|
||||
unsigned i, count;
|
||||
unsigned long x;
|
||||
unsigned int written_words;
|
||||
unsigned fifo_words_left;
|
||||
u8 *tx_buf = (u8 *)t->tx_buf + tspi->cur_tx_pos;
|
||||
@ -313,9 +303,9 @@ static unsigned tegra_spi_fill_tx_fifo_from_client_txbuf(
|
||||
nbytes = written_words * tspi->bytes_per_word;
|
||||
max_n_32bit = DIV_ROUND_UP(nbytes, 4);
|
||||
for (count = 0; count < max_n_32bit; count++) {
|
||||
x = 0;
|
||||
u32 x = 0;
|
||||
for (i = 0; (i < 4) && nbytes; i++, nbytes--)
|
||||
x |= (*tx_buf++) << (i*8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tegra_spi_writel(tspi, x, SPI_TX_FIFO);
|
||||
}
|
||||
} else {
|
||||
@ -323,10 +313,10 @@ static unsigned tegra_spi_fill_tx_fifo_from_client_txbuf(
|
||||
written_words = max_n_32bit;
|
||||
nbytes = written_words * tspi->bytes_per_word;
|
||||
for (count = 0; count < max_n_32bit; count++) {
|
||||
x = 0;
|
||||
u32 x = 0;
|
||||
for (i = 0; nbytes && (i < tspi->bytes_per_word);
|
||||
i++, nbytes--)
|
||||
x |= ((*tx_buf++) << i*8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tegra_spi_writel(tspi, x, SPI_TX_FIFO);
|
||||
}
|
||||
}
|
||||
@ -338,9 +328,8 @@ static unsigned int tegra_spi_read_rx_fifo_to_client_rxbuf(
|
||||
struct tegra_spi_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned rx_full_count;
|
||||
unsigned long fifo_status;
|
||||
u32 fifo_status;
|
||||
unsigned i, count;
|
||||
unsigned long x;
|
||||
unsigned int read_words = 0;
|
||||
unsigned len;
|
||||
u8 *rx_buf = (u8 *)t->rx_buf + tspi->cur_rx_pos;
|
||||
@ -350,20 +339,16 @@ static unsigned int tegra_spi_read_rx_fifo_to_client_rxbuf(
|
||||
if (tspi->is_packed) {
|
||||
len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
for (count = 0; count < rx_full_count; count++) {
|
||||
x = tegra_spi_readl(tspi, SPI_RX_FIFO);
|
||||
u32 x = tegra_spi_readl(tspi, SPI_RX_FIFO);
|
||||
for (i = 0; len && (i < 4); i++, len--)
|
||||
*rx_buf++ = (x >> i*8) & 0xFF;
|
||||
}
|
||||
tspi->cur_rx_pos += tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
read_words += tspi->curr_dma_words;
|
||||
} else {
|
||||
unsigned int rx_mask;
|
||||
unsigned int bits_per_word = t->bits_per_word;
|
||||
|
||||
rx_mask = (1 << bits_per_word) - 1;
|
||||
u32 rx_mask = ((u32)1 << t->bits_per_word) - 1;
|
||||
for (count = 0; count < rx_full_count; count++) {
|
||||
x = tegra_spi_readl(tspi, SPI_RX_FIFO);
|
||||
x &= rx_mask;
|
||||
u32 x = tegra_spi_readl(tspi, SPI_RX_FIFO) & rx_mask;
|
||||
for (i = 0; (i < tspi->bytes_per_word); i++)
|
||||
*rx_buf++ = (x >> (i*8)) & 0xFF;
|
||||
}
|
||||
@ -376,27 +361,24 @@ static unsigned int tegra_spi_read_rx_fifo_to_client_rxbuf(
|
||||
static void tegra_spi_copy_client_txbuf_to_spi_txbuf(
|
||||
struct tegra_spi_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned len;
|
||||
|
||||
/* Make the dma buffer to read by cpu */
|
||||
dma_sync_single_for_cpu(tspi->dev, tspi->tx_dma_phys,
|
||||
tspi->dma_buf_size, DMA_TO_DEVICE);
|
||||
|
||||
if (tspi->is_packed) {
|
||||
len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
unsigned len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
memcpy(tspi->tx_dma_buf, t->tx_buf + tspi->cur_pos, len);
|
||||
} else {
|
||||
unsigned int i;
|
||||
unsigned int count;
|
||||
u8 *tx_buf = (u8 *)t->tx_buf + tspi->cur_tx_pos;
|
||||
unsigned consume = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
unsigned int x;
|
||||
|
||||
for (count = 0; count < tspi->curr_dma_words; count++) {
|
||||
x = 0;
|
||||
u32 x = 0;
|
||||
for (i = 0; consume && (i < tspi->bytes_per_word);
|
||||
i++, consume--)
|
||||
x |= ((*tx_buf++) << i * 8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tspi->tx_dma_buf[count] = x;
|
||||
}
|
||||
}
|
||||
@ -410,27 +392,21 @@ static void tegra_spi_copy_client_txbuf_to_spi_txbuf(
|
||||
static void tegra_spi_copy_spi_rxbuf_to_client_rxbuf(
|
||||
struct tegra_spi_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned len;
|
||||
|
||||
/* Make the dma buffer to read by cpu */
|
||||
dma_sync_single_for_cpu(tspi->dev, tspi->rx_dma_phys,
|
||||
tspi->dma_buf_size, DMA_FROM_DEVICE);
|
||||
|
||||
if (tspi->is_packed) {
|
||||
len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
unsigned len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
memcpy(t->rx_buf + tspi->cur_rx_pos, tspi->rx_dma_buf, len);
|
||||
} else {
|
||||
unsigned int i;
|
||||
unsigned int count;
|
||||
unsigned char *rx_buf = t->rx_buf + tspi->cur_rx_pos;
|
||||
unsigned int x;
|
||||
unsigned int rx_mask;
|
||||
unsigned int bits_per_word = t->bits_per_word;
|
||||
u32 rx_mask = ((u32)1 << t->bits_per_word) - 1;
|
||||
|
||||
rx_mask = (1 << bits_per_word) - 1;
|
||||
for (count = 0; count < tspi->curr_dma_words; count++) {
|
||||
x = tspi->rx_dma_buf[count];
|
||||
x &= rx_mask;
|
||||
u32 x = tspi->rx_dma_buf[count] & rx_mask;
|
||||
for (i = 0; (i < tspi->bytes_per_word); i++)
|
||||
*rx_buf++ = (x >> (i*8)) & 0xFF;
|
||||
}
|
||||
@ -490,16 +466,16 @@ static int tegra_spi_start_rx_dma(struct tegra_spi_data *tspi, int len)
|
||||
static int tegra_spi_start_dma_based_transfer(
|
||||
struct tegra_spi_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned long val;
|
||||
u32 val;
|
||||
unsigned int len;
|
||||
int ret = 0;
|
||||
unsigned long status;
|
||||
u32 status;
|
||||
|
||||
/* Make sure that Rx and Tx fifo are empty */
|
||||
status = tegra_spi_readl(tspi, SPI_FIFO_STATUS);
|
||||
if ((status & SPI_FIFO_EMPTY) != SPI_FIFO_EMPTY) {
|
||||
dev_err(tspi->dev,
|
||||
"Rx/Tx fifo are not empty status 0x%08lx\n", status);
|
||||
dev_err(tspi->dev, "Rx/Tx fifo are not empty status 0x%08x\n",
|
||||
(unsigned)status);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@ -564,7 +540,7 @@ static int tegra_spi_start_dma_based_transfer(
|
||||
static int tegra_spi_start_cpu_based_transfer(
|
||||
struct tegra_spi_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned long val;
|
||||
u32 val;
|
||||
unsigned cur_words;
|
||||
|
||||
if (tspi->cur_direction & DATA_DIR_TX)
|
||||
@ -676,13 +652,13 @@ static void tegra_spi_deinit_dma_param(struct tegra_spi_data *tspi,
|
||||
dma_release_channel(dma_chan);
|
||||
}
|
||||
|
||||
static unsigned long tegra_spi_setup_transfer_one(struct spi_device *spi,
|
||||
static u32 tegra_spi_setup_transfer_one(struct spi_device *spi,
|
||||
struct spi_transfer *t, bool is_first_of_msg)
|
||||
{
|
||||
struct tegra_spi_data *tspi = spi_master_get_devdata(spi->master);
|
||||
u32 speed = t->speed_hz;
|
||||
u8 bits_per_word = t->bits_per_word;
|
||||
unsigned long command1;
|
||||
u32 command1;
|
||||
int req_mode;
|
||||
|
||||
if (speed != tspi->cur_speed) {
|
||||
@ -737,7 +713,7 @@ static unsigned long tegra_spi_setup_transfer_one(struct spi_device *spi,
|
||||
}
|
||||
|
||||
static int tegra_spi_start_transfer_one(struct spi_device *spi,
|
||||
struct spi_transfer *t, unsigned long command1)
|
||||
struct spi_transfer *t, u32 command1)
|
||||
{
|
||||
struct tegra_spi_data *tspi = spi_master_get_devdata(spi->master);
|
||||
unsigned total_fifo_words;
|
||||
@ -762,8 +738,8 @@ static int tegra_spi_start_transfer_one(struct spi_device *spi,
|
||||
tegra_spi_writel(tspi, command1, SPI_COMMAND1);
|
||||
tspi->command1_reg = command1;
|
||||
|
||||
dev_dbg(tspi->dev, "The def 0x%x and written 0x%lx\n",
|
||||
tspi->def_command1_reg, command1);
|
||||
dev_dbg(tspi->dev, "The def 0x%x and written 0x%x\n",
|
||||
tspi->def_command1_reg, (unsigned)command1);
|
||||
|
||||
if (total_fifo_words > SPI_FIFO_DEPTH)
|
||||
ret = tegra_spi_start_dma_based_transfer(tspi, t);
|
||||
@ -775,15 +751,9 @@ static int tegra_spi_start_transfer_one(struct spi_device *spi,
|
||||
static int tegra_spi_setup(struct spi_device *spi)
|
||||
{
|
||||
struct tegra_spi_data *tspi = spi_master_get_devdata(spi->master);
|
||||
unsigned long val;
|
||||
u32 val;
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
unsigned int cs_pol_bit[MAX_CHIP_SELECT] = {
|
||||
SPI_CS_POL_INACTIVE_0,
|
||||
SPI_CS_POL_INACTIVE_1,
|
||||
SPI_CS_POL_INACTIVE_2,
|
||||
SPI_CS_POL_INACTIVE_3,
|
||||
};
|
||||
|
||||
dev_dbg(&spi->dev, "setup %d bpw, %scpol, %scpha, %dHz\n",
|
||||
spi->bits_per_word,
|
||||
@ -805,9 +775,9 @@ static int tegra_spi_setup(struct spi_device *spi)
|
||||
spin_lock_irqsave(&tspi->lock, flags);
|
||||
val = tspi->def_command1_reg;
|
||||
if (spi->mode & SPI_CS_HIGH)
|
||||
val &= ~cs_pol_bit[spi->chip_select];
|
||||
val &= ~SPI_CS_POL_INACTIVE(spi->chip_select);
|
||||
else
|
||||
val |= cs_pol_bit[spi->chip_select];
|
||||
val |= SPI_CS_POL_INACTIVE(spi->chip_select);
|
||||
tspi->def_command1_reg = val;
|
||||
tegra_spi_writel(tspi, tspi->def_command1_reg, SPI_COMMAND1);
|
||||
spin_unlock_irqrestore(&tspi->lock, flags);
|
||||
@ -841,7 +811,7 @@ static int tegra_spi_transfer_one_message(struct spi_master *master,
|
||||
msg->actual_length = 0;
|
||||
|
||||
list_for_each_entry(xfer, &msg->transfers, transfer_list) {
|
||||
unsigned long cmd1;
|
||||
u32 cmd1;
|
||||
|
||||
reinit_completion(&tspi->xfer_completion);
|
||||
|
||||
|
||||
@ -149,14 +149,14 @@ struct tegra_sflash_data {
|
||||
static int tegra_sflash_runtime_suspend(struct device *dev);
|
||||
static int tegra_sflash_runtime_resume(struct device *dev);
|
||||
|
||||
static inline unsigned long tegra_sflash_readl(struct tegra_sflash_data *tsd,
|
||||
static inline u32 tegra_sflash_readl(struct tegra_sflash_data *tsd,
|
||||
unsigned long reg)
|
||||
{
|
||||
return readl(tsd->base + reg);
|
||||
}
|
||||
|
||||
static inline void tegra_sflash_writel(struct tegra_sflash_data *tsd,
|
||||
unsigned long val, unsigned long reg)
|
||||
u32 val, unsigned long reg)
|
||||
{
|
||||
writel(val, tsd->base + reg);
|
||||
}
|
||||
@ -186,7 +186,7 @@ static unsigned tegra_sflash_fill_tx_fifo_from_client_txbuf(
|
||||
struct tegra_sflash_data *tsd, struct spi_transfer *t)
|
||||
{
|
||||
unsigned nbytes;
|
||||
unsigned long status;
|
||||
u32 status;
|
||||
unsigned max_n_32bit = tsd->curr_xfer_words;
|
||||
u8 *tx_buf = (u8 *)t->tx_buf + tsd->cur_tx_pos;
|
||||
|
||||
@ -197,11 +197,11 @@ static unsigned tegra_sflash_fill_tx_fifo_from_client_txbuf(
|
||||
status = tegra_sflash_readl(tsd, SPI_STATUS);
|
||||
while (!(status & SPI_TXF_FULL)) {
|
||||
int i;
|
||||
unsigned int x = 0;
|
||||
u32 x = 0;
|
||||
|
||||
for (i = 0; nbytes && (i < tsd->bytes_per_word);
|
||||
i++, nbytes--)
|
||||
x |= ((*tx_buf++) << i*8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tegra_sflash_writel(tsd, x, SPI_TX_FIFO);
|
||||
if (!nbytes)
|
||||
break;
|
||||
@ -215,16 +215,14 @@ static unsigned tegra_sflash_fill_tx_fifo_from_client_txbuf(
|
||||
static int tegra_sflash_read_rx_fifo_to_client_rxbuf(
|
||||
struct tegra_sflash_data *tsd, struct spi_transfer *t)
|
||||
{
|
||||
unsigned long status;
|
||||
u32 status;
|
||||
unsigned int read_words = 0;
|
||||
u8 *rx_buf = (u8 *)t->rx_buf + tsd->cur_rx_pos;
|
||||
|
||||
status = tegra_sflash_readl(tsd, SPI_STATUS);
|
||||
while (!(status & SPI_RXF_EMPTY)) {
|
||||
int i;
|
||||
unsigned long x;
|
||||
|
||||
x = tegra_sflash_readl(tsd, SPI_RX_FIFO);
|
||||
u32 x = tegra_sflash_readl(tsd, SPI_RX_FIFO);
|
||||
for (i = 0; (i < tsd->bytes_per_word); i++)
|
||||
*rx_buf++ = (x >> (i*8)) & 0xFF;
|
||||
read_words++;
|
||||
@ -237,7 +235,7 @@ static int tegra_sflash_read_rx_fifo_to_client_rxbuf(
|
||||
static int tegra_sflash_start_cpu_based_transfer(
|
||||
struct tegra_sflash_data *tsd, struct spi_transfer *t)
|
||||
{
|
||||
unsigned long val = 0;
|
||||
u32 val = 0;
|
||||
unsigned cur_words;
|
||||
|
||||
if (tsd->cur_direction & DATA_DIR_TX)
|
||||
@ -267,7 +265,7 @@ static int tegra_sflash_start_transfer_one(struct spi_device *spi,
|
||||
{
|
||||
struct tegra_sflash_data *tsd = spi_master_get_devdata(spi->master);
|
||||
u32 speed;
|
||||
unsigned long command;
|
||||
u32 command;
|
||||
|
||||
speed = t->speed_hz;
|
||||
if (speed != tsd->cur_speed) {
|
||||
@ -314,7 +312,7 @@ static int tegra_sflash_start_transfer_one(struct spi_device *spi,
|
||||
tegra_sflash_writel(tsd, command, SPI_COMMAND);
|
||||
tsd->command_reg = command;
|
||||
|
||||
return tegra_sflash_start_cpu_based_transfer(tsd, t);
|
||||
return tegra_sflash_start_cpu_based_transfer(tsd, t);
|
||||
}
|
||||
|
||||
static int tegra_sflash_setup(struct spi_device *spi)
|
||||
|
||||
@ -196,7 +196,7 @@ struct tegra_slink_data {
|
||||
u32 rx_status;
|
||||
u32 status_reg;
|
||||
bool is_packed;
|
||||
unsigned long packed_size;
|
||||
u32 packed_size;
|
||||
|
||||
u32 command_reg;
|
||||
u32 command2_reg;
|
||||
@ -220,14 +220,14 @@ struct tegra_slink_data {
|
||||
static int tegra_slink_runtime_suspend(struct device *dev);
|
||||
static int tegra_slink_runtime_resume(struct device *dev);
|
||||
|
||||
static inline unsigned long tegra_slink_readl(struct tegra_slink_data *tspi,
|
||||
static inline u32 tegra_slink_readl(struct tegra_slink_data *tspi,
|
||||
unsigned long reg)
|
||||
{
|
||||
return readl(tspi->base + reg);
|
||||
}
|
||||
|
||||
static inline void tegra_slink_writel(struct tegra_slink_data *tspi,
|
||||
unsigned long val, unsigned long reg)
|
||||
u32 val, unsigned long reg)
|
||||
{
|
||||
writel(val, tspi->base + reg);
|
||||
|
||||
@ -238,38 +238,30 @@ static inline void tegra_slink_writel(struct tegra_slink_data *tspi,
|
||||
|
||||
static void tegra_slink_clear_status(struct tegra_slink_data *tspi)
|
||||
{
|
||||
unsigned long val;
|
||||
unsigned long val_write = 0;
|
||||
u32 val_write;
|
||||
|
||||
val = tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
|
||||
/* Write 1 to clear status register */
|
||||
val_write = SLINK_RDY | SLINK_FIFO_ERROR;
|
||||
tegra_slink_writel(tspi, val_write, SLINK_STATUS);
|
||||
}
|
||||
|
||||
static unsigned long tegra_slink_get_packed_size(struct tegra_slink_data *tspi,
|
||||
static u32 tegra_slink_get_packed_size(struct tegra_slink_data *tspi,
|
||||
struct spi_transfer *t)
|
||||
{
|
||||
unsigned long val;
|
||||
|
||||
switch (tspi->bytes_per_word) {
|
||||
case 0:
|
||||
val = SLINK_PACK_SIZE_4;
|
||||
break;
|
||||
return SLINK_PACK_SIZE_4;
|
||||
case 1:
|
||||
val = SLINK_PACK_SIZE_8;
|
||||
break;
|
||||
return SLINK_PACK_SIZE_8;
|
||||
case 2:
|
||||
val = SLINK_PACK_SIZE_16;
|
||||
break;
|
||||
return SLINK_PACK_SIZE_16;
|
||||
case 4:
|
||||
val = SLINK_PACK_SIZE_32;
|
||||
break;
|
||||
return SLINK_PACK_SIZE_32;
|
||||
default:
|
||||
val = 0;
|
||||
return 0;
|
||||
}
|
||||
return val;
|
||||
}
|
||||
|
||||
static unsigned tegra_slink_calculate_curr_xfer_param(
|
||||
@ -312,10 +304,9 @@ static unsigned tegra_slink_fill_tx_fifo_from_client_txbuf(
|
||||
{
|
||||
unsigned nbytes;
|
||||
unsigned tx_empty_count;
|
||||
unsigned long fifo_status;
|
||||
u32 fifo_status;
|
||||
unsigned max_n_32bit;
|
||||
unsigned i, count;
|
||||
unsigned long x;
|
||||
unsigned int written_words;
|
||||
unsigned fifo_words_left;
|
||||
u8 *tx_buf = (u8 *)t->tx_buf + tspi->cur_tx_pos;
|
||||
@ -329,9 +320,9 @@ static unsigned tegra_slink_fill_tx_fifo_from_client_txbuf(
|
||||
nbytes = written_words * tspi->bytes_per_word;
|
||||
max_n_32bit = DIV_ROUND_UP(nbytes, 4);
|
||||
for (count = 0; count < max_n_32bit; count++) {
|
||||
x = 0;
|
||||
u32 x = 0;
|
||||
for (i = 0; (i < 4) && nbytes; i++, nbytes--)
|
||||
x |= (*tx_buf++) << (i*8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tegra_slink_writel(tspi, x, SLINK_TX_FIFO);
|
||||
}
|
||||
} else {
|
||||
@ -339,10 +330,10 @@ static unsigned tegra_slink_fill_tx_fifo_from_client_txbuf(
|
||||
written_words = max_n_32bit;
|
||||
nbytes = written_words * tspi->bytes_per_word;
|
||||
for (count = 0; count < max_n_32bit; count++) {
|
||||
x = 0;
|
||||
u32 x = 0;
|
||||
for (i = 0; nbytes && (i < tspi->bytes_per_word);
|
||||
i++, nbytes--)
|
||||
x |= ((*tx_buf++) << i*8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tegra_slink_writel(tspi, x, SLINK_TX_FIFO);
|
||||
}
|
||||
}
|
||||
@ -354,9 +345,8 @@ static unsigned int tegra_slink_read_rx_fifo_to_client_rxbuf(
|
||||
struct tegra_slink_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned rx_full_count;
|
||||
unsigned long fifo_status;
|
||||
u32 fifo_status;
|
||||
unsigned i, count;
|
||||
unsigned long x;
|
||||
unsigned int read_words = 0;
|
||||
unsigned len;
|
||||
u8 *rx_buf = (u8 *)t->rx_buf + tspi->cur_rx_pos;
|
||||
@ -366,7 +356,7 @@ static unsigned int tegra_slink_read_rx_fifo_to_client_rxbuf(
|
||||
if (tspi->is_packed) {
|
||||
len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
for (count = 0; count < rx_full_count; count++) {
|
||||
x = tegra_slink_readl(tspi, SLINK_RX_FIFO);
|
||||
u32 x = tegra_slink_readl(tspi, SLINK_RX_FIFO);
|
||||
for (i = 0; len && (i < 4); i++, len--)
|
||||
*rx_buf++ = (x >> i*8) & 0xFF;
|
||||
}
|
||||
@ -374,7 +364,7 @@ static unsigned int tegra_slink_read_rx_fifo_to_client_rxbuf(
|
||||
read_words += tspi->curr_dma_words;
|
||||
} else {
|
||||
for (count = 0; count < rx_full_count; count++) {
|
||||
x = tegra_slink_readl(tspi, SLINK_RX_FIFO);
|
||||
u32 x = tegra_slink_readl(tspi, SLINK_RX_FIFO);
|
||||
for (i = 0; (i < tspi->bytes_per_word); i++)
|
||||
*rx_buf++ = (x >> (i*8)) & 0xFF;
|
||||
}
|
||||
@ -387,27 +377,24 @@ static unsigned int tegra_slink_read_rx_fifo_to_client_rxbuf(
|
||||
static void tegra_slink_copy_client_txbuf_to_spi_txbuf(
|
||||
struct tegra_slink_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned len;
|
||||
|
||||
/* Make the dma buffer to read by cpu */
|
||||
dma_sync_single_for_cpu(tspi->dev, tspi->tx_dma_phys,
|
||||
tspi->dma_buf_size, DMA_TO_DEVICE);
|
||||
|
||||
if (tspi->is_packed) {
|
||||
len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
unsigned len = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
memcpy(tspi->tx_dma_buf, t->tx_buf + tspi->cur_pos, len);
|
||||
} else {
|
||||
unsigned int i;
|
||||
unsigned int count;
|
||||
u8 *tx_buf = (u8 *)t->tx_buf + tspi->cur_tx_pos;
|
||||
unsigned consume = tspi->curr_dma_words * tspi->bytes_per_word;
|
||||
unsigned int x;
|
||||
|
||||
for (count = 0; count < tspi->curr_dma_words; count++) {
|
||||
x = 0;
|
||||
u32 x = 0;
|
||||
for (i = 0; consume && (i < tspi->bytes_per_word);
|
||||
i++, consume--)
|
||||
x |= ((*tx_buf++) << i * 8);
|
||||
x |= (u32)(*tx_buf++) << (i * 8);
|
||||
tspi->tx_dma_buf[count] = x;
|
||||
}
|
||||
}
|
||||
@ -434,14 +421,10 @@ static void tegra_slink_copy_spi_rxbuf_to_client_rxbuf(
|
||||
unsigned int i;
|
||||
unsigned int count;
|
||||
unsigned char *rx_buf = t->rx_buf + tspi->cur_rx_pos;
|
||||
unsigned int x;
|
||||
unsigned int rx_mask, bits_per_word;
|
||||
u32 rx_mask = ((u32)1 << t->bits_per_word) - 1;
|
||||
|
||||
bits_per_word = t->bits_per_word;
|
||||
rx_mask = (1 << bits_per_word) - 1;
|
||||
for (count = 0; count < tspi->curr_dma_words; count++) {
|
||||
x = tspi->rx_dma_buf[count];
|
||||
x &= rx_mask;
|
||||
u32 x = tspi->rx_dma_buf[count] & rx_mask;
|
||||
for (i = 0; (i < tspi->bytes_per_word); i++)
|
||||
*rx_buf++ = (x >> (i*8)) & 0xFF;
|
||||
}
|
||||
@ -501,17 +484,16 @@ static int tegra_slink_start_rx_dma(struct tegra_slink_data *tspi, int len)
|
||||
static int tegra_slink_start_dma_based_transfer(
|
||||
struct tegra_slink_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned long val;
|
||||
unsigned long test_val;
|
||||
u32 val;
|
||||
unsigned int len;
|
||||
int ret = 0;
|
||||
unsigned long status;
|
||||
u32 status;
|
||||
|
||||
/* Make sure that Rx and Tx fifo are empty */
|
||||
status = tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
if ((status & SLINK_FIFO_EMPTY) != SLINK_FIFO_EMPTY) {
|
||||
dev_err(tspi->dev,
|
||||
"Rx/Tx fifo are not empty status 0x%08lx\n", status);
|
||||
dev_err(tspi->dev, "Rx/Tx fifo are not empty status 0x%08x\n",
|
||||
(unsigned)status);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@ -551,9 +533,9 @@ static int tegra_slink_start_dma_based_transfer(
|
||||
}
|
||||
|
||||
/* Wait for tx fifo to be fill before starting slink */
|
||||
test_val = tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
while (!(test_val & SLINK_TX_FULL))
|
||||
test_val = tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
status = tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
while (!(status & SLINK_TX_FULL))
|
||||
status = tegra_slink_readl(tspi, SLINK_STATUS);
|
||||
}
|
||||
|
||||
if (tspi->cur_direction & DATA_DIR_RX) {
|
||||
@ -587,7 +569,7 @@ static int tegra_slink_start_dma_based_transfer(
|
||||
static int tegra_slink_start_cpu_based_transfer(
|
||||
struct tegra_slink_data *tspi, struct spi_transfer *t)
|
||||
{
|
||||
unsigned long val;
|
||||
u32 val;
|
||||
unsigned cur_words;
|
||||
|
||||
val = tspi->packed_size;
|
||||
@ -713,8 +695,8 @@ static int tegra_slink_start_transfer_one(struct spi_device *spi,
|
||||
u8 bits_per_word;
|
||||
unsigned total_fifo_words;
|
||||
int ret;
|
||||
unsigned long command;
|
||||
unsigned long command2;
|
||||
u32 command;
|
||||
u32 command2;
|
||||
|
||||
bits_per_word = t->bits_per_word;
|
||||
speed = t->speed_hz;
|
||||
@ -761,17 +743,18 @@ static int tegra_slink_start_transfer_one(struct spi_device *spi,
|
||||
|
||||
static int tegra_slink_setup(struct spi_device *spi)
|
||||
{
|
||||
struct tegra_slink_data *tspi = spi_master_get_devdata(spi->master);
|
||||
unsigned long val;
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
unsigned int cs_pol_bit[MAX_CHIP_SELECT] = {
|
||||
static const u32 cs_pol_bit[MAX_CHIP_SELECT] = {
|
||||
SLINK_CS_POLARITY,
|
||||
SLINK_CS_POLARITY1,
|
||||
SLINK_CS_POLARITY2,
|
||||
SLINK_CS_POLARITY3,
|
||||
};
|
||||
|
||||
struct tegra_slink_data *tspi = spi_master_get_devdata(spi->master);
|
||||
u32 val;
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
|
||||
dev_dbg(&spi->dev, "setup %d bpw, %scpol, %scpha, %dHz\n",
|
||||
spi->bits_per_word,
|
||||
spi->mode & SPI_CPOL ? "" : "~",
|
||||
|
||||
@ -46,6 +46,8 @@ struct ti_qspi {
|
||||
|
||||
struct spi_master *master;
|
||||
void __iomem *base;
|
||||
void __iomem *ctrl_base;
|
||||
void __iomem *mmap_base;
|
||||
struct clk *fclk;
|
||||
struct device *dev;
|
||||
|
||||
@ -54,6 +56,8 @@ struct ti_qspi {
|
||||
u32 spi_max_frequency;
|
||||
u32 cmd;
|
||||
u32 dc;
|
||||
|
||||
bool ctrl_mod;
|
||||
};
|
||||
|
||||
#define QSPI_PID (0x0)
|
||||
@ -204,53 +208,36 @@ static int qspi_write_msg(struct ti_qspi *qspi, struct spi_transfer *t)
|
||||
txbuf = t->tx_buf;
|
||||
cmd = qspi->cmd | QSPI_WR_SNGL;
|
||||
count = t->len;
|
||||
wlen = t->bits_per_word;
|
||||
wlen = t->bits_per_word >> 3; /* in bytes */
|
||||
|
||||
while (count) {
|
||||
switch (wlen) {
|
||||
case 8:
|
||||
case 1:
|
||||
dev_dbg(qspi->dev, "tx cmd %08x dc %08x data %02x\n",
|
||||
cmd, qspi->dc, *txbuf);
|
||||
writeb(*txbuf, qspi->base + QSPI_SPI_DATA_REG);
|
||||
ti_qspi_write(qspi, cmd, QSPI_SPI_CMD_REG);
|
||||
ret = wait_for_completion_timeout(&qspi->transfer_complete,
|
||||
QSPI_COMPLETION_TIMEOUT);
|
||||
if (ret == 0) {
|
||||
dev_err(qspi->dev, "write timed out\n");
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
txbuf += 1;
|
||||
count -= 1;
|
||||
break;
|
||||
case 16:
|
||||
case 2:
|
||||
dev_dbg(qspi->dev, "tx cmd %08x dc %08x data %04x\n",
|
||||
cmd, qspi->dc, *txbuf);
|
||||
writew(*((u16 *)txbuf), qspi->base + QSPI_SPI_DATA_REG);
|
||||
ti_qspi_write(qspi, cmd, QSPI_SPI_CMD_REG);
|
||||
ret = wait_for_completion_timeout(&qspi->transfer_complete,
|
||||
QSPI_COMPLETION_TIMEOUT);
|
||||
if (ret == 0) {
|
||||
dev_err(qspi->dev, "write timed out\n");
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
txbuf += 2;
|
||||
count -= 2;
|
||||
break;
|
||||
case 32:
|
||||
case 4:
|
||||
dev_dbg(qspi->dev, "tx cmd %08x dc %08x data %08x\n",
|
||||
cmd, qspi->dc, *txbuf);
|
||||
writel(*((u32 *)txbuf), qspi->base + QSPI_SPI_DATA_REG);
|
||||
ti_qspi_write(qspi, cmd, QSPI_SPI_CMD_REG);
|
||||
ret = wait_for_completion_timeout(&qspi->transfer_complete,
|
||||
QSPI_COMPLETION_TIMEOUT);
|
||||
if (ret == 0) {
|
||||
dev_err(qspi->dev, "write timed out\n");
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
txbuf += 4;
|
||||
count -= 4;
|
||||
break;
|
||||
}
|
||||
|
||||
ti_qspi_write(qspi, cmd, QSPI_SPI_CMD_REG);
|
||||
ret = wait_for_completion_timeout(&qspi->transfer_complete,
|
||||
QSPI_COMPLETION_TIMEOUT);
|
||||
if (ret == 0) {
|
||||
dev_err(qspi->dev, "write timed out\n");
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
txbuf += wlen;
|
||||
count -= wlen;
|
||||
}
|
||||
|
||||
return 0;
|
||||
@ -276,7 +263,7 @@ static int qspi_read_msg(struct ti_qspi *qspi, struct spi_transfer *t)
|
||||
break;
|
||||
}
|
||||
count = t->len;
|
||||
wlen = t->bits_per_word;
|
||||
wlen = t->bits_per_word >> 3; /* in bytes */
|
||||
|
||||
while (count) {
|
||||
dev_dbg(qspi->dev, "rx cmd %08x dc %08x\n", cmd, qspi->dc);
|
||||
@ -288,22 +275,18 @@ static int qspi_read_msg(struct ti_qspi *qspi, struct spi_transfer *t)
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
switch (wlen) {
|
||||
case 8:
|
||||
case 1:
|
||||
*rxbuf = readb(qspi->base + QSPI_SPI_DATA_REG);
|
||||
rxbuf += 1;
|
||||
count -= 1;
|
||||
break;
|
||||
case 16:
|
||||
case 2:
|
||||
*((u16 *)rxbuf) = readw(qspi->base + QSPI_SPI_DATA_REG);
|
||||
rxbuf += 2;
|
||||
count -= 2;
|
||||
break;
|
||||
case 32:
|
||||
case 4:
|
||||
*((u32 *)rxbuf) = readl(qspi->base + QSPI_SPI_DATA_REG);
|
||||
rxbuf += 4;
|
||||
count -= 4;
|
||||
break;
|
||||
}
|
||||
rxbuf += wlen;
|
||||
count -= wlen;
|
||||
}
|
||||
|
||||
return 0;
|
||||
@ -417,10 +400,8 @@ out:
|
||||
static int ti_qspi_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct ti_qspi *qspi;
|
||||
struct spi_master *master;
|
||||
|
||||
master = dev_get_drvdata(dev);
|
||||
qspi = spi_master_get_devdata(master);
|
||||
qspi = dev_get_drvdata(dev);
|
||||
ti_qspi_restore_ctx(qspi);
|
||||
|
||||
return 0;
|
||||
@ -437,7 +418,7 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct ti_qspi *qspi;
|
||||
struct spi_master *master;
|
||||
struct resource *r;
|
||||
struct resource *r, *res_ctrl, *res_mmap;
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
u32 max_freq;
|
||||
int ret = 0, num_cs, irq;
|
||||
@ -464,7 +445,35 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
||||
qspi->dev = &pdev->dev;
|
||||
platform_set_drvdata(pdev, qspi);
|
||||
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi_base");
|
||||
if (r == NULL) {
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (r == NULL) {
|
||||
dev_err(&pdev->dev, "missing platform data\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
res_mmap = platform_get_resource_byname(pdev,
|
||||
IORESOURCE_MEM, "qspi_mmap");
|
||||
if (res_mmap == NULL) {
|
||||
res_mmap = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
||||
if (res_mmap == NULL) {
|
||||
dev_err(&pdev->dev,
|
||||
"memory mapped resource not required\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
res_ctrl = platform_get_resource_byname(pdev,
|
||||
IORESOURCE_MEM, "qspi_ctrlmod");
|
||||
if (res_ctrl == NULL) {
|
||||
res_ctrl = platform_get_resource(pdev, IORESOURCE_MEM, 2);
|
||||
if (res_ctrl == NULL) {
|
||||
dev_dbg(&pdev->dev,
|
||||
"control module resources not required\n");
|
||||
}
|
||||
}
|
||||
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0) {
|
||||
@ -480,6 +489,23 @@ static int ti_qspi_probe(struct platform_device *pdev)
|
||||
goto free_master;
|
||||
}
|
||||
|
||||
if (res_ctrl) {
|
||||
qspi->ctrl_mod = true;
|
||||
qspi->ctrl_base = devm_ioremap_resource(&pdev->dev, res_ctrl);
|
||||
if (IS_ERR(qspi->ctrl_base)) {
|
||||
ret = PTR_ERR(qspi->ctrl_base);
|
||||
goto free_master;
|
||||
}
|
||||
}
|
||||
|
||||
if (res_mmap) {
|
||||
qspi->mmap_base = devm_ioremap_resource(&pdev->dev, res_mmap);
|
||||
if (IS_ERR(qspi->mmap_base)) {
|
||||
ret = PTR_ERR(qspi->mmap_base);
|
||||
goto free_master;
|
||||
}
|
||||
}
|
||||
|
||||
ret = devm_request_irq(&pdev->dev, irq, ti_qspi_isr, 0,
|
||||
dev_name(&pdev->dev), qspi);
|
||||
if (ret < 0) {
|
||||
@ -516,13 +542,9 @@ free_master:
|
||||
|
||||
static int ti_qspi_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct spi_master *master;
|
||||
struct ti_qspi *qspi;
|
||||
struct ti_qspi *qspi = platform_get_drvdata(pdev);
|
||||
int ret;
|
||||
|
||||
master = platform_get_drvdata(pdev);
|
||||
qspi = spi_master_get_devdata(master);
|
||||
|
||||
ret = pm_runtime_get_sync(qspi->dev);
|
||||
if (ret < 0) {
|
||||
dev_err(qspi->dev, "pm_runtime_get_sync() failed\n");
|
||||
@ -534,8 +556,6 @@ static int ti_qspi_remove(struct platform_device *pdev)
|
||||
pm_runtime_put(qspi->dev);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
|
||||
spi_unregister_master(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -547,7 +567,7 @@ static struct platform_driver ti_qspi_driver = {
|
||||
.probe = ti_qspi_probe,
|
||||
.remove = ti_qspi_remove,
|
||||
.driver = {
|
||||
.name = "ti,dra7xxx-qspi",
|
||||
.name = "ti-qspi",
|
||||
.owner = THIS_MODULE,
|
||||
.pm = &ti_qspi_pm_ops,
|
||||
.of_match_table = ti_qspi_match,
|
||||
@ -559,3 +579,4 @@ module_platform_driver(ti_qspi_driver);
|
||||
MODULE_AUTHOR("Sourav Poddar <sourav.poddar@ti.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_DESCRIPTION("TI QSPI controller driver");
|
||||
MODULE_ALIAS("platform:ti-qspi");
|
||||
|
||||
@ -217,7 +217,7 @@ struct pch_pd_dev_save {
|
||||
struct pch_spi_board_data *board_dat;
|
||||
};
|
||||
|
||||
static DEFINE_PCI_DEVICE_TABLE(pch_spi_pcidev_id) = {
|
||||
static const struct pci_device_id pch_spi_pcidev_id[] = {
|
||||
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_GE_SPI), 1, },
|
||||
{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_SPI), 2, },
|
||||
{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_SPI), 1, },
|
||||
@ -466,12 +466,6 @@ static void pch_spi_reset(struct spi_master *master)
|
||||
|
||||
static int pch_spi_setup(struct spi_device *pspi)
|
||||
{
|
||||
/* check bits per word */
|
||||
if (pspi->bits_per_word == 0) {
|
||||
pspi->bits_per_word = 8;
|
||||
dev_dbg(&pspi->dev, "%s 8 bits per word\n", __func__);
|
||||
}
|
||||
|
||||
/* Check baud rate setting */
|
||||
/* if baud rate of chip is greater than
|
||||
max we can support,return error */
|
||||
|
||||
@ -348,7 +348,7 @@ static int txx9spi_probe(struct platform_device *dev)
|
||||
INIT_LIST_HEAD(&c->queue);
|
||||
init_waitqueue_head(&c->waitq);
|
||||
|
||||
c->clk = clk_get(&dev->dev, "spi-baseclk");
|
||||
c->clk = devm_clk_get(&dev->dev, "spi-baseclk");
|
||||
if (IS_ERR(c->clk)) {
|
||||
ret = PTR_ERR(c->clk);
|
||||
c->clk = NULL;
|
||||
@ -356,7 +356,6 @@ static int txx9spi_probe(struct platform_device *dev)
|
||||
}
|
||||
ret = clk_enable(c->clk);
|
||||
if (ret) {
|
||||
clk_put(c->clk);
|
||||
c->clk = NULL;
|
||||
goto exit;
|
||||
}
|
||||
@ -415,10 +414,8 @@ exit_busy:
|
||||
exit:
|
||||
if (c->workqueue)
|
||||
destroy_workqueue(c->workqueue);
|
||||
if (c->clk) {
|
||||
if (c->clk)
|
||||
clk_disable(c->clk);
|
||||
clk_put(c->clk);
|
||||
}
|
||||
spi_master_put(master);
|
||||
return ret;
|
||||
}
|
||||
@ -430,7 +427,6 @@ static int txx9spi_remove(struct platform_device *dev)
|
||||
|
||||
destroy_workqueue(c->workqueue);
|
||||
clk_disable(c->clk);
|
||||
clk_put(c->clk);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -231,22 +231,13 @@ static int spi_xcomm_probe(struct i2c_client *i2c,
|
||||
master->dev.of_node = i2c->dev.of_node;
|
||||
i2c_set_clientdata(i2c, master);
|
||||
|
||||
ret = spi_register_master(master);
|
||||
ret = devm_spi_register_master(&i2c->dev, master);
|
||||
if (ret < 0)
|
||||
spi_master_put(master);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int spi_xcomm_remove(struct i2c_client *i2c)
|
||||
{
|
||||
struct spi_master *master = i2c_get_clientdata(i2c);
|
||||
|
||||
spi_unregister_master(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id spi_xcomm_ids[] = {
|
||||
{ "spi-xcomm" },
|
||||
{ },
|
||||
@ -259,7 +250,6 @@ static struct i2c_driver spi_xcomm_driver = {
|
||||
},
|
||||
.id_table = spi_xcomm_ids,
|
||||
.probe = spi_xcomm_probe,
|
||||
.remove = spi_xcomm_remove,
|
||||
};
|
||||
module_i2c_driver(spi_xcomm_driver);
|
||||
|
||||
|
||||
@ -380,6 +380,17 @@ static void spi_dev_set_name(struct spi_device *spi)
|
||||
spi->chip_select);
|
||||
}
|
||||
|
||||
static int spi_dev_check(struct device *dev, void *data)
|
||||
{
|
||||
struct spi_device *spi = to_spi_device(dev);
|
||||
struct spi_device *new_spi = data;
|
||||
|
||||
if (spi->master == new_spi->master &&
|
||||
spi->chip_select == new_spi->chip_select)
|
||||
return -EBUSY;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* spi_add_device - Add spi_device allocated with spi_alloc_device
|
||||
* @spi: spi_device to register
|
||||
@ -394,7 +405,6 @@ int spi_add_device(struct spi_device *spi)
|
||||
static DEFINE_MUTEX(spi_add_lock);
|
||||
struct spi_master *master = spi->master;
|
||||
struct device *dev = master->dev.parent;
|
||||
struct device *d;
|
||||
int status;
|
||||
|
||||
/* Chipselects are numbered 0..max; validate. */
|
||||
@ -414,12 +424,10 @@ int spi_add_device(struct spi_device *spi)
|
||||
*/
|
||||
mutex_lock(&spi_add_lock);
|
||||
|
||||
d = bus_find_device_by_name(&spi_bus_type, NULL, dev_name(&spi->dev));
|
||||
if (d != NULL) {
|
||||
status = bus_for_each_dev(&spi_bus_type, NULL, spi, spi_dev_check);
|
||||
if (status) {
|
||||
dev_err(dev, "chipselect %d already in use\n",
|
||||
spi->chip_select);
|
||||
put_device(d);
|
||||
status = -EBUSY;
|
||||
goto done;
|
||||
}
|
||||
|
||||
@ -601,8 +609,10 @@ static int spi_transfer_one_message(struct spi_master *master,
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (ret > 0)
|
||||
if (ret > 0) {
|
||||
ret = 0;
|
||||
wait_for_completion(&master->xfer_completion);
|
||||
}
|
||||
|
||||
trace_spi_transfer_stop(msg, xfer);
|
||||
|
||||
@ -642,7 +652,7 @@ out:
|
||||
*
|
||||
* Called by SPI drivers using the core transfer_one_message()
|
||||
* implementation to notify it that the current interrupt driven
|
||||
* transfer has finised and the next one may be scheduled.
|
||||
* transfer has finished and the next one may be scheduled.
|
||||
*/
|
||||
void spi_finalize_current_transfer(struct spi_master *master)
|
||||
{
|
||||
@ -695,7 +705,7 @@ static void spi_pump_messages(struct kthread_work *work)
|
||||
}
|
||||
/* Extract head of queue */
|
||||
master->cur_msg =
|
||||
list_entry(master->queue.next, struct spi_message, queue);
|
||||
list_first_entry(&master->queue, struct spi_message, queue);
|
||||
|
||||
list_del_init(&master->cur_msg->queue);
|
||||
if (master->busy)
|
||||
@ -745,7 +755,9 @@ static void spi_pump_messages(struct kthread_work *work)
|
||||
ret = master->transfer_one_message(master, master->cur_msg);
|
||||
if (ret) {
|
||||
dev_err(&master->dev,
|
||||
"failed to transfer one message from queue\n");
|
||||
"failed to transfer one message from queue: %d\n", ret);
|
||||
master->cur_msg->status = ret;
|
||||
spi_finalize_current_message(master);
|
||||
return;
|
||||
}
|
||||
}
|
||||
@ -801,11 +813,8 @@ struct spi_message *spi_get_next_queued_message(struct spi_master *master)
|
||||
|
||||
/* get a pointer to the next message, if any */
|
||||
spin_lock_irqsave(&master->queue_lock, flags);
|
||||
if (list_empty(&master->queue))
|
||||
next = NULL;
|
||||
else
|
||||
next = list_entry(master->queue.next,
|
||||
struct spi_message, queue);
|
||||
next = list_first_entry_or_null(&master->queue, struct spi_message,
|
||||
queue);
|
||||
spin_unlock_irqrestore(&master->queue_lock, flags);
|
||||
|
||||
return next;
|
||||
@ -1606,15 +1615,11 @@ int spi_setup(struct spi_device *spi)
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(spi_setup);
|
||||
|
||||
static int __spi_async(struct spi_device *spi, struct spi_message *message)
|
||||
static int __spi_validate(struct spi_device *spi, struct spi_message *message)
|
||||
{
|
||||
struct spi_master *master = spi->master;
|
||||
struct spi_transfer *xfer;
|
||||
|
||||
message->spi = spi;
|
||||
|
||||
trace_spi_message_submit(message);
|
||||
|
||||
if (list_empty(&message->transfers))
|
||||
return -EINVAL;
|
||||
if (!message->complete)
|
||||
@ -1677,9 +1682,8 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
|
||||
if (xfer->rx_buf && !xfer->rx_nbits)
|
||||
xfer->rx_nbits = SPI_NBITS_SINGLE;
|
||||
/* check transfer tx/rx_nbits:
|
||||
* 1. keep the value is not out of single, dual and quad
|
||||
* 2. keep tx/rx_nbits is contained by mode in spi_device
|
||||
* 3. if SPI_3WIRE, tx/rx_nbits should be in single
|
||||
* 1. check the value matches one of single, dual and quad
|
||||
* 2. check tx/rx_nbits match the mode in spi_device
|
||||
*/
|
||||
if (xfer->tx_buf) {
|
||||
if (xfer->tx_nbits != SPI_NBITS_SINGLE &&
|
||||
@ -1692,9 +1696,6 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
|
||||
if ((xfer->tx_nbits == SPI_NBITS_QUAD) &&
|
||||
!(spi->mode & SPI_TX_QUAD))
|
||||
return -EINVAL;
|
||||
if ((spi->mode & SPI_3WIRE) &&
|
||||
(xfer->tx_nbits != SPI_NBITS_SINGLE))
|
||||
return -EINVAL;
|
||||
}
|
||||
/* check transfer rx_nbits */
|
||||
if (xfer->rx_buf) {
|
||||
@ -1708,13 +1709,22 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
|
||||
if ((xfer->rx_nbits == SPI_NBITS_QUAD) &&
|
||||
!(spi->mode & SPI_RX_QUAD))
|
||||
return -EINVAL;
|
||||
if ((spi->mode & SPI_3WIRE) &&
|
||||
(xfer->rx_nbits != SPI_NBITS_SINGLE))
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
message->status = -EINPROGRESS;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __spi_async(struct spi_device *spi, struct spi_message *message)
|
||||
{
|
||||
struct spi_master *master = spi->master;
|
||||
|
||||
message->spi = spi;
|
||||
|
||||
trace_spi_message_submit(message);
|
||||
|
||||
return master->transfer(spi, message);
|
||||
}
|
||||
|
||||
@ -1753,6 +1763,10 @@ int spi_async(struct spi_device *spi, struct spi_message *message)
|
||||
int ret;
|
||||
unsigned long flags;
|
||||
|
||||
ret = __spi_validate(spi, message);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
|
||||
spin_lock_irqsave(&master->bus_lock_spinlock, flags);
|
||||
|
||||
if (master->bus_lock_flag)
|
||||
@ -1801,6 +1815,10 @@ int spi_async_locked(struct spi_device *spi, struct spi_message *message)
|
||||
int ret;
|
||||
unsigned long flags;
|
||||
|
||||
ret = __spi_validate(spi, message);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
|
||||
spin_lock_irqsave(&master->bus_lock_spinlock, flags);
|
||||
|
||||
ret = __spi_async(spi, message);
|
||||
|
||||
@ -1,6 +1,4 @@
|
||||
/*
|
||||
* arch/arm/mach-w90x900/include/mach/nuc900_spi.h
|
||||
*
|
||||
* Copyright (c) 2009 Nuvoton technology corporation.
|
||||
*
|
||||
* Wan ZongShun <mcuos.com@gmail.com>
|
||||
@ -11,8 +9,8 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __ASM_ARCH_SPI_H
|
||||
#define __ASM_ARCH_SPI_H
|
||||
#ifndef __SPI_NUC900_H
|
||||
#define __SPI_NUC900_H
|
||||
|
||||
extern void mfp_set_groupg(struct device *dev, const char *subname);
|
||||
|
||||
@ -32,4 +30,4 @@ struct nuc900_spi_chip {
|
||||
unsigned char bits_per_word;
|
||||
};
|
||||
|
||||
#endif /* __ASM_ARCH_SPI_H */
|
||||
#endif /* __SPI_NUC900_H */
|
||||
|
||||
@ -23,4 +23,6 @@ struct s3c2410_spi_info {
|
||||
void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol);
|
||||
};
|
||||
|
||||
extern int s3c24xx_set_fiq(unsigned int irq, bool on);
|
||||
|
||||
#endif /* __LINUX_SPI_S3C24XX_H */
|
||||
|
||||
@ -75,6 +75,7 @@ struct spi_device {
|
||||
struct spi_master *master;
|
||||
u32 max_speed_hz;
|
||||
u8 chip_select;
|
||||
u8 bits_per_word;
|
||||
u16 mode;
|
||||
#define SPI_CPHA 0x01 /* clock phase */
|
||||
#define SPI_CPOL 0x02 /* clock polarity */
|
||||
@ -92,7 +93,6 @@ struct spi_device {
|
||||
#define SPI_TX_QUAD 0x200 /* transmit with 4 wires */
|
||||
#define SPI_RX_DUAL 0x400 /* receive with 2 wires */
|
||||
#define SPI_RX_QUAD 0x800 /* receive with 4 wires */
|
||||
u8 bits_per_word;
|
||||
int irq;
|
||||
void *controller_state;
|
||||
void *controller_data;
|
||||
@ -277,15 +277,17 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
|
||||
* @unprepare_transfer_hardware: there are currently no more messages on the
|
||||
* queue so the subsystem notifies the driver that it may relax the
|
||||
* hardware by issuing this call
|
||||
* @set_cs: assert or deassert chip select, true to assert. May be called
|
||||
* @set_cs: set the logic level of the chip select line. May be called
|
||||
* from interrupt context.
|
||||
* @prepare_message: set up the controller to transfer a single message,
|
||||
* for example doing DMA mapping. Called from threaded
|
||||
* context.
|
||||
* @transfer_one: transfer a single spi_transfer. When the
|
||||
* driver is finished with this transfer it must call
|
||||
* spi_finalize_current_transfer() so the subsystem can issue
|
||||
* the next transfer
|
||||
* @transfer_one: transfer a single spi_transfer.
|
||||
* - return 0 if the transfer is finished,
|
||||
* - return 1 if the transfer is still in progress. When
|
||||
* the driver is finished with this transfer it must
|
||||
* call spi_finalize_current_transfer() so the subsystem
|
||||
* can issue the next transfer
|
||||
* @unprepare_message: undo any work done by prepare_message().
|
||||
* @cs_gpios: Array of GPIOs to use as chip select lines; one per CS
|
||||
* number. Any individual value may be -ENOENT for CS lines that
|
||||
@ -576,8 +578,8 @@ struct spi_transfer {
|
||||
dma_addr_t rx_dma;
|
||||
|
||||
unsigned cs_change:1;
|
||||
u8 tx_nbits;
|
||||
u8 rx_nbits;
|
||||
unsigned tx_nbits:3;
|
||||
unsigned rx_nbits:3;
|
||||
#define SPI_NBITS_SINGLE 0x01 /* 1bit transfer */
|
||||
#define SPI_NBITS_DUAL 0x02 /* 2bits transfer */
|
||||
#define SPI_NBITS_QUAD 0x04 /* 4bits transfer */
|
||||
@ -847,7 +849,7 @@ static inline ssize_t spi_w8r16(struct spi_device *spi, u8 cmd)
|
||||
ssize_t status;
|
||||
u16 result;
|
||||
|
||||
status = spi_write_then_read(spi, &cmd, 1, (u8 *) &result, 2);
|
||||
status = spi_write_then_read(spi, &cmd, 1, &result, 2);
|
||||
|
||||
/* return negative errno or unsigned value */
|
||||
return (status < 0) ? status : result;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user