Maxime Chevallier f68a7dcb91 spi: a3700: Add full-duplex support ... The armada 3700 SPI controller has support for full-duplex transfers, but it can only be done without using the hardware FIFOs. A full duplex transfer is done by shifting 4 bytes at a time, or even one byte at a time for transfers less than 4 bytes long. While this method is perfectly suitable for small transfers, it is still slower than using the FIFOs. This commit implement full-duplex support, making sure that half-duplex transfers are still done using the FIFOs with the existing method. Some setup functions were moved around to make sure the controller is properly configured before beginning each transfer. This was tested on EspressoBin with a logical analyser, and a simple setup where MISO is connected on MOSI. Transfers were made from userspace using spidev and spi-pipe from the spi-tools project Signed-off-by: Maxime Chevallier <maxime.chevallier@smile.fr> Signed-off-by: Mark Brown <broonie@kernel.org>		2018-01-18 11:10:45 +00:00
..
Kconfig	Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next	2017-11-10 21:33:51 +00:00
Makefile	Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next	2017-11-10 21:33:51 +00:00
spi-adi-v3.c
spi-altera.c	spi: altera: Consolidate TX/RX data register access	2017-08-16 11:53:31 +01:00
spi-armada-3700.c	spi: a3700: Add full-duplex support	2018-01-18 11:10:45 +00:00
spi-ath79.c	spi/ath79: Fix checkpatch warnings	2017-07-17 12:09:38 +01:00
spi-atmel.c	Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm63xx', 'spi/topic/davinci' and 'spi/topic/imx' into spi-next	2017-07-03 16:21:06 +01:00
spi-au1550.c
spi-axi-spi-engine.c	spi: spi-axi: fix potential use-after-free after deregistration	2017-10-31 11:15:10 +00:00
spi-bcm53xx.c	spi: bcm53xx: (re)license code to the GPL v2	2017-01-06 18:21:50 +00:00
spi-bcm53xx.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
spi-bcm63xx-hsspi.c	Merge remote-tracking branches 'spi/topic/altera', 'spi/topic/at79', 'spi/topic/bcm-qspi', 'spi/topic/bcm63xx' and 'spi/topic/bcm63xx-hspi' into spi-next	2017-09-04 15:51:14 +01:00
spi-bcm63xx.c	spi/bcm63xx: fix error return code in bcm63xx_spi_probe()	2017-08-08 11:36:35 +01:00
spi-bcm2835.c
spi-bcm2835aux.c
spi-bcm-qspi.c	spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path	2017-10-12 09:26:23 +01:00
spi-bcm-qspi.h	spi: iproc-qspi: Add Broadcom iProc SoCs support	2016-09-24 20:03:25 +01:00
spi-bfin5xx.c	spi: spi-bfin5xx: Remove deprecated create_singlethread_workqueue	2016-07-03 14:14:31 +02:00
spi-bfin-sport.c	spi: spi-bfin-sport: Remove deprecated create_singlethread_workqueue	2016-07-03 14:24:31 +02:00
spi-bitbang-txrx.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
spi-bitbang.c
spi-brcmstb-qspi.c	spi: brcmstb-qspi: Broadcom settop platform driver	2016-09-14 18:03:32 +01:00
spi-butterfly.c
spi-cadence.c	spi: cadence: Add support for context loss	2017-08-08 10:43:41 +01:00
spi-cavium-octeon.c	spi: octeon: Split driver into Octeon specific and common parts	2016-07-24 21:54:29 +01:00
spi-cavium-thunderx.c	spi: spi-cavium-thunderx: Add missing clk_disable_unprepare()	2016-08-24 12:37:43 +01:00
spi-cavium.c	spi: octeon: Split driver into Octeon specific and common parts	2016-07-24 21:54:29 +01:00
spi-cavium.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
spi-clps711x.c	spi: clps711x: Driver refactor	2016-07-07 11:44:43 +02:00
spi-coldfire-qspi.c
spi-davinci.c	spi: davinci: Handle return value of clk_prepare_enable	2017-06-06 19:36:45 +01:00
spi-dln2.c
spi-dw-mid.c	spi: dw-mid: switch to new dmaengine_terminate_* API (part 2)	2017-01-04 12:27:00 +00:00
spi-dw-mmio.c	spi: dw: Disable clock after unregistering the host	2017-04-18 19:16:49 +01:00
spi-dw-pci.c
spi-dw.c	spi: dw: Make debugfs use bus num and make irq name unique	2017-01-09 11:22:14 +00:00
spi-dw.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
spi-efm32.c
spi-ep93xx.c	spi: spi-ep93xx: use the default master transfer queueing mechanism	2017-08-09 17:53:14 +01:00
spi-falcon.c	spi: spi-falcon: drop check of boot select	2017-09-01 11:33:22 +01:00
spi-fsl-cpm.c
spi-fsl-cpm.h
spi-fsl-dspi.c	spi: spi-fsl-dspi: enabling Coldfire mcf5441x dspi	2017-11-03 12:53:16 +01:00
spi-fsl-espi.c	spi: fsl-espi: fix ioread16/iowrite16 endianness	2016-12-01 18:50:59 +00:00
spi-fsl-lib.c
spi-fsl-lib.h	spi: fsl-espi: separate fsl-espi from fsl-lib completely	2016-11-14 11:21:48 +00:00
spi-fsl-lpspi.c	spi: fsl-lpspi: fix indentation error	2017-01-09 19:34:02 +00:00
spi-fsl-spi.c	Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next	2017-04-26 15:58:04 +01:00
spi-fsl-spi.h
spi-gpio.c
spi-img-spfi.c	spi: img-spfi: Remove spi_master_put in img_spfi_remove()	2016-07-27 19:00:16 +01:00
spi-imx.c	spi: imx: Don't require platform data chipselect array	2017-11-10 21:28:11 +00:00
spi-iproc-qspi.c	spi: iproc-qspi: Add Broadcom iProc SoCs support	2016-09-24 20:03:25 +01:00
spi-jcore.c	spi: jcore: Fix module autoload for OF registration	2016-11-23 16:42:20 +00:00
spi-lantiq-ssc.c	Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next	2017-04-26 15:58:04 +01:00
spi-lm70llp.c
spi-loopback-test.c	spi: loopback-test: implement testing with no CS	2017-07-26 13:08:56 +01:00
spi-lp8841-rtc.c
spi-meson-spicc.c	spi: Add Meson SPICC driver	2017-05-24 18:19:25 +01:00
spi-meson-spifc.c	spi: meson: Add GXBB compatible	2016-09-12 20:11:39 +01:00
spi-mpc52xx-psc.c	spi: spi-mpc52xx-psc: Remove deprecated create_singlethread_workqueue	2016-07-03 14:23:25 +02:00
spi-mpc52xx.c	spi/mpc52xx: Combine substrings for two messages	2017-01-17 18:28:19 +00:00
spi-mpc512x-psc.c
spi-mt65xx.c	spi: mediatek: add spi support for mt2712 IC	2017-06-20 13:39:14 +01:00
spi-mxs.c	spi: mxs: implement runtime pm	2017-09-27 10:02:57 -07:00
spi-nuc900.c
spi-oc-tiny.c
spi-omap2-mcspi.c	spi: omap: Allocate bus number from spi framework	2017-08-18 12:15:41 +01:00
spi-omap-100k.c
spi-omap-uwire.c
spi-orion.c	spi: orion: remove redundant assignment of status to zero	2017-11-02 13:03:53 +00:00
spi-pic32-sqi.c	spi: pic32-sqi: use list_move_tail and list_move	2016-08-08 11:56:40 +01:00
spi-pic32.c	spi: pic32: fix spelling mistakes on macro names	2017-07-26 13:04:21 +01:00
spi-pl022.c	spi: pl022: constify amba_id	2017-08-23 17:12:05 +01:00
spi-ppc4xx.c	spi/ppc4xx: Use kcalloc() in spi_ppc4xx_of_probe()	2017-01-17 18:34:25 +00:00
spi-pxa2xx-dma.c	spi: pxa2xx: Remove pointer to chip data from driver data	2016-09-12 20:01:27 +01:00
spi-pxa2xx-pci.c	spi: pca2xx-pci: Allow MSI	2017-01-23 18:09:37 +00:00
spi-pxa2xx.c	spi: pxa2xx: Convert to GPIO descriptor API where possible	2017-08-04 12:41:55 +01:00
spi-pxa2xx.h	spi: pxa2xx: Convert to GPIO descriptor API where possible	2017-08-04 12:41:55 +01:00
spi-qup.c	spi: qup: fix 64-bit build warning	2017-08-10 15:50:23 +01:00
spi-rb4xx.c
spi-rockchip.c	spi: rockchip: configure CTRLR1 according to size and data frame	2017-08-16 11:58:23 +01:00
spi-rspi.c	spi: rspi: Use of_device_get_match_data() helper	2017-10-04 15:47:38 +01:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c
spi-s3c64xx.c	spi: s3c64xx: remove redundant pointer sci	2017-11-03 17:21:10 +00:00
spi-sc18is602.c	spi: sc18is602: Add OF device ID table	2017-02-22 10:50:09 -08:00
spi-sh-hspi.c
spi-sh-msiof.c	Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next	2017-11-10 21:33:51 +00:00
spi-sh-sci.c
spi-sh.c	spi: spi-sh: fix error return code in spi_sh_probe()	2017-08-09 17:18:06 +01:00
spi-sirf.c	spi: sirf: fix spelling mistake: "registerred" -> "registered"	2017-06-28 20:02:52 +01:00
spi-slave-system-control.c	spi: slave: Add SPI slave handler controlling system state	2017-05-26 13:12:19 +01:00
spi-slave-time.c	spi: slave: Add SPI slave handler reporting uptime at previous message	2017-05-26 13:12:04 +01:00
spi-sprd-adi.c	spi: sprd: Fix the possible negative value of BIT()	2017-10-25 14:00:03 +02:00
spi-st-ssc4.c	spi: st-ssc4: whitespace cleanup	2017-05-26 12:41:07 +01:00
spi-stm32.c	spi: stm32: Fix logical error in stm32_spi_prepare_mbr()	2017-09-13 09:42:27 -07:00
spi-sun4i.c	spi: sun4i: Allow transfers larger than FIFO size	2016-10-29 12:11:30 -06:00
spi-sun6i.c	spi: sun6i: explicitly request exclusive reset control	2017-07-19 17:06:03 +01:00
spi-tegra20-sflash.c	spi: tegra20-sflash: explicitly request exclusive reset control	2017-07-19 17:06:31 +01:00
spi-tegra20-slink.c	spi: tegra20-slink: explicitly request exclusive reset control	2017-07-19 17:06:26 +01:00
spi-tegra114.c	spi: tegra114: correct register name in definition	2017-10-09 10:16:38 +01:00
spi-test.h	spi: loopback-test: add elapsed time check	2017-03-17 21:54:08 +00:00
spi-ti-qspi.c	Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next	2017-04-26 15:58:22 +01:00
spi-tle62x0.c
spi-topcliff-pch.c	spi/topcliff-pch: Delete an error message for a failed memory allocation in pch_spi_set_tx()	2017-01-17 18:38:02 +00:00
spi-txx9.c	spi: spi-txx9: Add missing clock (un)prepare calls for CCF	2016-08-18 19:10:39 +01:00
spi-xcomm.c
spi-xilinx.c	spi: xilinx: Return IRQ_NONE if no interrupts were detected	2016-07-15 11:45:00 +01:00
spi-xlp.c	spi: xlp: fix error return code in xlp_spi_probe()	2017-08-08 11:36:07 +01:00
spi-xtensa-xtfpga.c
spi-zynqmp-gqspi.c
spi.c	Merge remote-tracking branch 'spi/topic/core' into spi-next	2017-11-10 21:33:43 +00:00
spidev.c	Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-08 10:41:53 -07:00