Grygorii Strashko 7ef97e9a31 i2c: davinci: use ICPFUNC to toggle I2C as gpio for bus recovery ... Having a board where the I2C bus locks up occasionally made it clear that the bus recovery in the i2c-davinci driver will only work on some boards, because on regular boards, this will only toggle GPIO lines that aren't muxed to the actual pins. The I2C controller on SoCs like da850 (and da830), Keystone 2 has the built-in capability to bit-bang its lines by using the ICPFUNC registers of the i2c controller. Implement the suggested procedure by toggling SCL and checking SDA using the ICPFUNC registers of the I2C controller when present. Allow platforms to indicate the presence of the ICPFUNC registers with a has_pfunc platform data flag and add optional DT property "ti,has-pfunc" to indicate the same in DT. Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Tested-by: Michael Lawnick <michael.lawnick@nokia.com> Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca> Signed-off-by: Mike Looijmans <milo-software@users.sourceforge.net> [grygorii.strashko@ti.com: combined patches from Ben Gardiner and Mike Looijmans and reimplemented ICPFUNC bus recovery using I2C bus recovery infrastructure] Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>		2015-04-10 17:57:28 +02:00
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ad5449.h
ad5755.h
ad7266.h
ad7291.h	staging:iio:ad7291: Move out of staging	2014-07-08 21:17:30 +01:00
ad7298.h
ad7303.h
ad7791.h
ad7793.h
ad7887.h
adau17x1.h	ASoC: Add ADAU1381/ADAU1781 audio CODEC support	2014-05-27 20:54:51 +01:00
adau1977.h	ASoC: Add ADAU1977 CODEC driver	2014-02-19 13:36:15 +09:00
ads7828.h
arm-ux500-pm.h
asoc-imx-ssi.h
asoc-kirkwood.h
asoc-mx27vis.h
asoc-palm27x.h
asoc-s3c.h	ASoC: Samsung: Add quirk for internal DMA	2014-11-07 10:38:17 +00:00
asoc-s3c24xx_simtec.h	ASoC: s3c24xx: Remove invalid file reference	2014-02-25 21:29:31 +09:00
asoc-ti-mcbsp.h
asoc-ux500-msp.h
at24.h
at91_adc.h	iio: adc: at91_adc: Add support for touchscreens without TSMR	2014-05-07 18:28:40 +02:00
ata-pxa.h
ata-samsung_cf.h	ata: pata_samsung_cf: removes s5pc100 related ata codes	2014-06-30 10:48:08 -04:00
atmel.h	TTY/Serial driver patches for 3.16-rc1	2014-06-03 09:01:02 -07:00
bcmgenet.h	net: bcmgenet: enable driver to work without a device tree	2014-12-08 20:26:59 -05:00
bd6107.h
bfin_rotary.h	Input: bfin_rotary - move pin lists into into platform data	2015-02-15 16:06:27 -08:00
brcmfmac-sdio.h
bt-nokia-h4p.h	staging/bluetooth: Add hci_h4p driver	2014-02-07 10:13:53 -08:00
camera-mx2.h
camera-mx3.h
camera-pxa.h
camera-rcar.h
clk-integrator.h	ARM: integrator: switch to fetch clocks from device tree	2014-02-13 11:20:42 +01:00
clk-lpss.h
clk-realview.h
clk-u300.h
clk-ux500.h
coda.h
cpuidle-exynos.h	cpuidle: exynos: add coupled cpuidle support for exynos4210	2015-01-30 08:39:15 +09:00
crypto-atmel.h
crypto-ux500.h
cyttsp4.h
davinci_asp.h	ASoC: davinci-mcasp: Rename platform data struct	2014-02-03 18:26:59 +00:00
db8500_thermal.h
dma-atmel.h
dma-coh901318.h
dma-dw.h	dmaengine: dw: define DW_DMA_MAX_NR_MASTERS	2015-02-04 22:39:44 -08:00
dma-ep93xx.h
dma-imx-sdma.h
dma-imx.h	dmaengine: imx-sdma: Add a new DMATYPE for SAI	2014-11-17 13:50:43 +05:30
dma-mmp_tdma.h	dma: mmp_tdma: Fix build for ARM64	2015-02-03 17:47:35 -08:00
dma-mv_xor.h
dma-rcar-audmapp.h	shdma: add R-Car Audio DMAC peri peri driver	2014-03-29 19:38:09 +05:30
dma-rcar-hpbdma.h
dma-s3c24xx.h
dma-ste-dma40.h
dmtimer-omap.h
drv260x-pdata.h	Input: drv260x - add TI drv260x haptics driver	2014-08-19 22:19:28 -07:00
dwc3-omap.h
edma.h	ARM: edma: Add edma_assign_channel_eventq() to move channel to a give queue	2014-07-28 17:03:13 +05:30
efm32-spi.h
efm32-uart.h
ehci-sh.h
elm.h	nand: omap2: Remove horrible ifdefs to fix module probe	2014-09-22 11:37:51 -07:00
emif_plat.h
eth-netx.h
fsa9480.h
g762.h
gpio-davinci.h	gpio: remove obsolete tnetv107x driver	2014-03-05 10:44:44 +08:00
gpio-dwapb.h	GPIO: gpio-dwapb: Enable platform driver binding to MFD driver	2014-09-23 17:51:37 +02:00
gpio-em.h
gpio-lpc32xx.h
gpio-omap.h
gpio-rcar.h
gpio-ts5500.h
gpio_backlight.h
hsmmc-omap.h	mmc: omap_hsmmc: remove unused slot_id parameter	2014-11-26 14:30:56 +01:00
hwmon-s3c.h
i2c-cbus-gpio.h
i2c-davinci.h	i2c: davinci: use ICPFUNC to toggle I2C as gpio for bus recovery	2015-04-10 17:57:28 +02:00
i2c-designware.h	i2c: designware: add support of platform data to set I2C mode	2014-09-29 22:41:17 +02:00
i2c-imx.h
i2c-nuc900.h
i2c-s3c2410.h	i2c: s3c2410: Trivial cleanup in header file	2014-03-10 17:32:28 +01:00
ina2xx.h
intel-mid_wdt.h	watchdog: add Intel MID watchdog driver support	2014-06-10 21:48:16 +02:00
invensense_mpu6050.h
iommu-omap.h	iommu/omap: Remove platform data da_start and da_end fields	2014-07-29 12:39:56 +02:00
irda-pxaficp.h
irda-sa11x0.h	arm: sa1100: move irda header to linux/platform_data	2014-12-30 18:44:07 -05:00
irq-renesas-intc-irqpin.h
irq-renesas-irqc.h
isl9305.h	regulator: isl9305: Add Intersil ISL9305/H driver	2014-09-06 12:43:05 +01:00
keyboard-pxa930_rotary.h
keyboard-spear.h
keypad-ep93xx.h
keypad-nomadik-ske.h
keypad-omap.h
keypad-pxa27x.h
keypad-w90p910.h
keyscan-davinci.h
lcd-mipid.h
leds-kirkwood-netxbig.h
leds-kirkwood-ns2.h
leds-lm355x.h
leds-lm3642.h
leds-lp55xx.h
leds-omap.h
leds-pca963x.h
leds-s3c24xx.h	leds: leds-s3c24xx: Trivial cleanup in header file	2014-02-27 09:57:11 -08:00
lm3630a_bl.h
lm3639_bl.h
lp855x.h	backlight: lp855x: Add supply regulator to lp855x	2014-12-09 09:24:45 +00:00
lp8727.h
lp8755.h
lv5207lp.h
macb.h
mailbox-omap.h
max197.h
max3421-hcd.h	usb: host: max3421-hcd: Allow platform-data to specify Vbus polarity	2014-05-29 11:19:30 -07:00
max6697.h
mfd-mcp-sa11x0.h
microread.h
mmc-atmel-mci.h	mmc: atmel-mci: move mach header to platform_data	2014-11-10 12:40:37 +01:00
mmc-davinci.h
mmc-esdhc-imx.h
mmc-msm_sdcc.h	mmc: msm: Cleanup mmc-msm_sdcc.h header	2014-02-25 15:43:15 -05:00
mmc-mvsdio.h	mmc: mvsdio: Cleanup mmc-mvsdio.h header	2014-02-25 15:43:23 -05:00
mmc-mxcmmc.h
mmc-omap.h	mmc: omap_hsmmc: remove prepare/complete system suspend support.	2015-01-19 09:56:08 +01:00
mmc-pxamci.h
mmc-s3cmci.h
mmc-sdhci-s3c.h
mmp_audio.h
mmp_dma.h
mouse-pxa930_trkball.h
msm_serial_hs.h
mtd-davinci-aemif.h	ARM: davinci: aemif: get rid of davinci-nand driver dependency on aemif	2014-02-23 20:33:18 +05:30
mtd-davinci.h
mtd-mxc_nand.h
mtd-nand-omap2.h	nand: omap2: Add support for flash-based bad block table	2014-09-17 01:02:48 -07:00
mtd-nand-pxa3xx.h	mtd: nand: pxa3xx: Use ECC strength and step size devicetree binding	2014-05-21 12:55:09 -07:00
mtd-nand-s3c2410.h	mtd: nand: s3c2410: Trivial cleanup in header file	2014-03-10 22:42:26 -07:00
mtd-onenand-omap2.h
mtd-orion_nand.h
mv_usb.h
net-cw1200.h
ntc_thermistor.h	hwmon: (ntc_thermistor) Support B57330V2103 from EPCOS	2014-08-04 07:01:35 -07:00
omap-twl4030.h
omap-wd-timer.h
omap1_bl.h
omap_drm.h
pca953x.h
pcmcia-pxa2xx_viper.h
pinctrl-adi2.h
pinctrl-single.h
pn544.h
pxa2xx_udc.h
pxa_sdhci.h	mmc: sdhci-pxav3: Move private driver data to driver source	2014-11-10 12:40:31 +01:00
regulator-haptic.h	Input: add regulator haptic driver	2014-12-21 18:59:20 -08:00
remoteproc-omap.h
s3c-hsotg.h
s3c-hsudc.h
sa11x0-serial.h
sc18is602.h
serial-imx.h	serial: imx: Remove init() and exit() platform callbacks	2014-02-28 16:36:45 -08:00
serial-omap.h	ARM: OMAP: serial: remove last vestige of DTR_gpio support.	2014-11-10 09:06:44 -08:00
serial-sccnxp.h
sh_ipmmu.h
shmob_drm.h
sht15.h
shtc1.h	hwmon: add support for Sensirion SHTC1 sensor	2014-06-12 08:36:48 -07:00
si5351.h
simplefb.h
spi-clps711x.h
spi-davinci.h
spi-ep93xx.h
spi-imx.h
spi-nuc900.h
spi-omap2-mcspi.h
spi-s3c64xx.h	spi/s3c64xx: Trivial cleanup in header file	2014-02-16 09:59:13 +08:00
ssm2518.h
st21nfca.h	NFC: st21nfca: Adding support for secure element	2015-01-28 00:03:36 +01:00
st21nfcb.h	NFC: st21nfcb: Fix copy/paste error in comment	2015-01-26 23:14:34 +01:00
st1232_pdata.h
st_sensors_pdata.h
syscon.h	mfd: syscon: Add platform data with a regmap config name	2014-05-15 17:02:19 +01:00
touchscreen-s3c2410.h	Input: s3c2410 - trivial cleanup in header file	2014-02-14 00:09:43 -08:00
tpm_stm_st33.h	tpm/tpm_i2c_stm_st33: Change tpm_i2c_stm_st33.h to tpm_stm_st33.h	2015-01-17 15:04:04 +01:00
tsl2563.h
uio_dmem_genirq.h
uio_pruss.h
usb-davinci.h
usb-ehci-mxc.h	ARM: imx: move EHCI platform defines out of platform_data header	2014-07-18 16:10:04 +08:00
usb-ehci-orion.h
usb-musb-ux500.h
usb-mx2.h
usb-ohci-pxa27x.h
usb-ohci-s3c2410.h
usb-omap.h
usb-omap1.h
usb-pxa3xx-ulpi.h
usb-rcar-gen2-phy.h
usb-rcar-phy.h
usb-s3c2410_udc.h
usb3503.h
ux500_wdt.h
video-clcd-versatile.h	video: fix up versatile CLCD helper move	2014-07-23 17:41:00 +02:00
video-ep93xx.h
video-imxfb.h	video: imxfb: Remove unused fields from platform data structure	2014-02-28 12:35:22 +02:00
video-msm_fb.h
video-mx3fb.h
video-nuc900fb.h
video-pxafb.h
video_s3c.h
voltage-omap.h
wiznet.h
zforce_ts.h