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3ad7ea18ae
linux/drivers/i2c/busses
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Jean Delvare 3ad7ea18ae i2c-i801: Support SMBus multiplexing on Asus Z8 series 
Add support for SMBus multiplexing on Asus Z8 motherboard series. On
these boards, the memory slots are behind a GPIO-controlled I2C
multiplexer. Models with 6 or 12 memory slots have 2 segments behind
the multiplexer, while models with 18 memory slots have 3 such
segments.

On these boards, only the memory slots are behind the multiplexer,
so it is possible to keep the autodetection mechanism.

The code is generic enough so it could work on other boards as long as
the multiplexer is controlled by GPIO pins. For other forms of
multiplexing (for example using an I2C device) additional code will be
needed.

Thanks to Asus for providing a board to develop and test this feature,
as well as all the technical information required.

At the moment, the GPIO driver must be loaded before the i2c-i801
driver, but I hope to solve this soon, using deferred probing on
the i2c-mux-gpio side.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-10-05 22:23:53 +02:00
..
i2c-acorn.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
i2c-ali15x3.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-ali1535.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-ali1563.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-amd756-s4882.c
i2c-amd756.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-amd8111.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-at91.c i2c-at91: Use struct dev_pm_ops for power management 2012-07-12 12:04:32 +02:00
i2c-au1550.c i2c/busses: Use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-bfin-twi.c i2c: i2c-bfin-twi: Move blackfin TWI register access Macro to head file. 2012-07-13 08:37:31 +02:00
i2c-cpm.c i2c/busses: Use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-davinci.c ARM: davinci: move platform_data definitions 2012-09-14 11:16:54 +02:00
i2c-designware-core.c i2c-designware: i2c_dw_xfer_msg can be static 2012-10-05 22:23:53 +02:00
i2c-designware-core.h i2c: designware: Add support for 16bit register access 2012-05-12 14:28:11 +02:00
i2c-designware-pcidrv.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-designware-platdrv.c i2c: designware: Add clk_{un}prepare() support 2012-05-12 14:28:15 +02:00
i2c-diolan-u2c.c i2c: diolan-u2c: Fix master_xfer return code 2012-08-18 12:27:27 +02:00
i2c-eg20t.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-elektor.c Fix common misspellings 2011-03-31 11:26:23 -03:00
i2c-gpio.c i2c: Dynamically assign adapter id if it wasn't explictly specified 2012-05-12 14:28:11 +02:00
i2c-highlander.c Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1 2012-01-14 12:32:16 -08:00
i2c-hydra.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-i801.c i2c-i801: Support SMBus multiplexing on Asus Z8 series 2012-10-05 22:23:53 +02:00
i2c-ibm_iic.c Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1 2012-01-14 12:32:16 -08:00
i2c-ibm_iic.h
i2c-imx.c ARM: imx: move platform_data definitions 2012-09-14 11:17:21 +02:00
i2c-intel-mid.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-iop3xx.c i2c: iop3xx: use standard gpiolib functions 2012-07-25 09:26:41 -05:00
i2c-iop3xx.h i2c-iop3xx: add iomem annotation 2011-01-04 00:53:37 +00:00
i2c-isch.c i2c-isch: Decrease delay in command completion check loop 2012-03-26 21:47:18 +02:00
i2c-mpc.c i2c/mpc: make data used as *of_device_id.data const 2012-09-11 08:57:37 +02:00
i2c-mv64xxx.c I2C: MV64XYZ: Add Device Tree support 2012-07-23 22:04:11 +02:00
i2c-mxs.c i2c: mxs: correctly setup speed for non devicetree 2012-09-12 17:55:22 +02:00
i2c-nforce2-s4985.c
i2c-nforce2.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-nomadik.c i2c: nomadik: Add default configuration into the Nomadik I2C driver 2012-08-18 09:56:56 +02:00
i2c-nuc900.c ARM: w90x900: move platform_data definitions 2012-09-14 11:18:59 +02:00
i2c-ocores.c i2c: i2c-ocores: support for 16bit and 32bit IO 2012-07-14 13:30:25 +02:00
i2c-octeon.c i2c: Convert i2c-octeon.c to use device tree. 2012-07-23 13:54:53 +01:00
i2c-omap.c Merge branch 'ofdeviceiddata' of git://git.pengutronix.de/git/ukl/linux into next/fixes-non-critical 2012-09-13 00:15:00 -07:00
i2c-parport-light.c i2c-parport: Various cleanups 2011-05-24 20:58:49 +02:00
i2c-parport.c i2c-parport: i2c_parport_irq can be static 2012-10-05 22:23:53 +02:00
i2c-parport.h i2c-parport: Various cleanups 2011-05-24 20:58:49 +02:00
i2c-pasemi.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-pca-isa.c i2c-pca: Fix waitforcompletion() return value 2010-09-30 14:14:22 +02:00
i2c-pca-platform.c i2c: Dynamically assign adapter id if it wasn't explictly specified 2012-05-12 14:28:11 +02:00
i2c-piix4.c i2c-piix4: Support AMD auxiliary SMBus controller 2012-07-24 14:13:57 +02:00
i2c-pmcmsp.c i2c-pmcmsp: remove IRQF_SAMPLE_RANDOM which is now a no-op 2012-07-19 10:38:47 -04:00
i2c-pnx.c i2c: pnx: Fix read transactions of >= 2 bytes 2012-09-12 17:52:44 +02:00
i2c-powermac.c i2c/powermac: Improve detection of devices from device-tree 2012-07-11 18:22:46 +10:00
i2c-puv3.c i2c-puv3: Use struct dev_pm_ops for power management 2012-07-12 12:04:54 +02:00
i2c-pxa-pci.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-pxa.c i2c/i2c-pxa: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
i2c-s3c2410.c ARM: samsung: move platform_data definitions 2012-09-19 17:42:18 +02:00
i2c-s6000.c i2c: Change mail address of Oskar Schirmer 2012-05-17 15:15:56 +02:00
i2c-s6000.h i2c: Change mail address of Oskar Schirmer 2012-05-17 15:15:56 +02:00
i2c-scmi.c i2c-scmi: Provide module aliases for automatic loading 2010-03-24 14:38:39 +01:00
i2c-sh7760.c i2c/busses: Use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-sh_mobile.c i2c: sh_mobile: add device tree support 2012-05-12 14:28:12 +02:00
i2c-sibyte.c i2c/mips: Fix error return codes from Sibyte i2c bus driver 2010-07-10 09:42:47 +02:00
i2c-simtec.c i2c/busses: Use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-sirf.c i2c: add CSR SiRFprimaII on-chip I2C controllers driver 2012-03-07 19:05:04 +01:00
i2c-sis96x.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-sis630.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-sis5595.c i2c: Convert to DEFINE_PCI_DEVICE_TABLE 2012-01-12 20:32:04 +01:00
i2c-stu300.c i2c: stu300: use devm managed resources 2012-07-16 13:48:51 +02:00
i2c-stub.c i2c-stub: Expose the default functionality flags 2010-05-21 18:40:56 +02:00
i2c-taos-evm.c i2c-taos-evm: Fix log messages 2011-06-29 11:36:10 +02:00
i2c-tegra.c i2c: tegra: dynamically control fast clk 2012-09-13 11:40:30 -06:00
i2c-tiny-usb.c i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter 2012-07-24 14:13:59 +02:00
i2c-versatile.c i2c: Dynamically assign adapter id if it wasn't explictly specified 2012-05-12 14:28:11 +02:00
i2c-via.c i2c/busses: Use module_pci_driver 2012-07-24 14:13:56 +02:00
i2c-viapro.c i2c-viapro: Add VIA VX900 device ID 2012-10-05 22:23:53 +02:00
i2c-xiic.c I2C: xiic: Add OF binding support 2012-05-12 14:28:18 +02:00
i2c-xlr.c i2c: Support for Netlogic XLR/XLS I2C controller. 2012-02-24 22:25:57 +01:00
Kconfig i2c-i801: Support SMBus multiplexing on Asus Z8 series 2012-10-05 22:23:53 +02:00
Makefile i2c-designware: Fix build error if CONFIG_I2C_DESIGNWARE_PLATFORM=y && CONFIG_I2C_DESIGNWARE_PCI=y 2012-09-10 10:14:02 +02:00
scx200_acb.c i2c/scx200_*: Replace printks with pr_<level>s 2012-10-05 22:23:52 +02:00
scx200_i2c.c i2c/scx200_*: Replace printks with pr_<level>s 2012-10-05 22:23:52 +02:00