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Mark Featherston 0c9a947a68 gpio: ts4900: Do not set DAT and OE together 
[ Upstream commit 03fe003547975680fdb9ff5ab0e41cb68276c4f2 ]

This works around an issue with the hardware where both OE and
DAT are exposed in the same register. If both are updated
simultaneously, the harware makes no guarantees that OE or DAT
will actually change in any given order and may result in a
glitch of a few ns on a GPIO pin when changing direction and value
in a single write.

Setting direction to input now only affects OE bit. Setting
direction to output updates DAT first, then OE.

Fixes: 9c6686322d74 ("gpio: add Technologic I2C-FPGA gpio support")
Signed-off-by: Mark Featherston <mark@embeddedTS.com>
Signed-off-by: Kris Bahnsen <kris@embeddedTS.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-03-16 12:49:01 +01:00
..
devres.c
gpio: Propagate all errors in devm_get_gpiod_from_child()
2016-02-25 10:04:25 +01:00
gpio-74x164.c
gpio: 74x164: Use spi_write() helper instead of open coding
2016-06-23 11:07:12 +02:00
gpio-74xx-mmio.c
gpio: 74xx-mmio: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:19:42 +05:30
gpio-104-dio-48e.c
gpio: 104-dio-48e: Fix control port offset computation off-by-one error
2016-06-08 10:08:12 +02:00
gpio-104-idi-48.c
gpio: 104-idi-48: Fix missing spin_lock_init for ack_lock
2016-06-13 14:48:10 +02:00
gpio-104-idio-16.c
gpio: 104-idio-16: Utilize the ISA bus driver
2016-05-02 09:32:04 -07:00
gpio-adnp.c
gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
2019-04-03 06:24:19 +02:00
gpio-adp5520.c
gpio: adp5520: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:34:06 +05:30
gpio-adp5588.c
gpio: adp5588: Fix sleep-in-atomic-context bug
2018-10-10 08:53:18 +02:00
gpio-altera.c
gpio: altera: Use handle_level_irq when configured as a level_high
2017-12-14 09:28:18 +01:00
gpio-amd8111.c
gpio: amd8111: Use devm_request_region
2016-02-16 00:19:52 +01:00
gpio-amdpt.c
gpio: amdpt: Add a new ACPI HID
2016-03-30 10:38:51 +02:00
gpio-arizona.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-aspeed.c
gpio: fix aspeed_gpio unmask irq
2018-05-16 10:08:42 +02:00
gpio-ath79.c
gpio: ath79: add missing MODULE_DESCRIPTION/LICENSE
2018-02-03 17:05:35 +01:00
gpio-axp209.c
gpio: axp209: Implement get_direction
2016-09-23 15:13:04 +02:00
gpio-bcm-kona.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-brcmstb.c
gpio: brcmstb: Return proper error if bank width is invalid
2016-04-15 10:09:48 +02:00
gpio-bt8xx.c
gpio: bt8xx: use gpiochip data pointer
2016-01-05 11:21:03 +01:00
gpio-clps711x.c
gpio: clps711x: Remove board support
2016-06-08 10:49:58 +02:00
gpio-crystalcove.c
gpio: crystalcove: Do not write regular gpio registers for virtual GPIOs
2018-04-13 19:48:04 +02:00
gpio-cs5535.c
gpio: cs5535: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:28 +05:30
gpio-da9052.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-da9055.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-davinci.c
Merge branch 'devel' into for-next
2016-02-22 13:47:49 +01:00
gpio-dln2.c
gpio: dln2: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:30 +05:30
gpio-dwapb.c
gpio: dwapb: add missing fwnode_handle_put() in dwapb_gpio_get_pdata()
2016-07-22 15:30:42 +02:00
gpio-em.c
gpio: em: use gpiochip data pointer
2016-01-05 11:21:05 +01:00
gpio-ep93xx.c
gpio: ep93xx: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:30 +05:30
gpio-etraxfs.c
…
gpio-f7188x.c
gpio: f7188x: use gpiochip_get_data instead of container_of
2016-09-18 13:35:06 +02:00
gpio-ge.c
gpio: ge: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:31 +05:30
gpio-gpio-mm.c
gpio: Add GPIO support for the Diamond Systems GPIO-MM
2016-08-11 13:37:25 +02:00
gpio-grgpio.c
gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
2020-02-28 15:42:18 +01:00
gpio-htc-egpio.c
mfd/gpio: Move HTC GPIO driver to GPIO subsystem
2016-09-28 09:28:34 -07:00
gpio-ich.c
gpio: ich: Use devm_request_region
2016-02-16 00:19:53 +01:00
gpio-intel-mid.c
gpio: intel-mid: Fix build warning when !CONFIG_PM
2018-02-25 11:05:51 +01:00
gpio-iop.c
gpio: iop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
2018-02-03 17:05:35 +01:00
gpio-it87.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-janz-ttl.c
gpio: janz-ttl: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:33 +05:30
gpio-kempld.c
gpio: kempld: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:34 +05:30
gpio-ks8695.c
gpio: ks8695: remove irq_to_gpio function
2016-02-19 00:20:30 +01:00
gpio-loongson1.c
gpio: loongson1: remove redundant return value check
2016-09-23 15:10:00 +02:00
gpio-loongson.c
gpio: convert remaining users to gpiochip_add_data()
2016-01-05 11:21:20 +01:00
gpio-lp873x.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-lp3943.c
Revert "gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free"
2016-03-09 22:00:27 +07:00
gpio-lpc18xx.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-lpc32xx.c
gpio: lpc32xx: remove unused platform data file
2016-09-12 14:23:37 +02:00
gpio-lynxpoint.c
gpio: lynxpoint: avoid potential warning on error path
2016-06-23 11:07:14 +02:00
gpio-max730x.c
gpio: max730x: set gpiochip data pointer before using it
2016-08-10 15:40:44 +02:00
gpio-max732x.c
gpio: max732x: use gpiochip data pointer
2016-01-05 11:21:07 +01:00
gpio-max7300.c
…
gpio-max7301.c
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
2018-12-29 13:40:15 +01:00
gpio-max77620.c
gpio: max77620: Fixup debounce delays
2019-11-28 18:28:05 +01:00
gpio-mb86s7x.c
gpio: mb86s7x: make explicitly non-modular
2016-03-31 15:00:28 +02:00
gpio-mc9s08dz60.c
gpio: mc9s08dz60: make explicitly non-modular
2016-03-31 15:02:09 +02:00
gpio-mc33880.c
gpio: mc33880: use gpiochip data pointer
2016-01-05 11:21:07 +01:00
gpio-mcp23s08.c
gpio: mcp23s08: make driver depend on OF_GPIO
2016-09-08 00:42:57 +02:00
gpio-menz127.c
gpio: Fix wrong rounding in gpio-menz127
2018-10-03 17:01:48 -07:00
gpio-merrifield.c
gpio: merrifield: Protect irq_ack() and gpio_set() by lock
2016-07-22 15:30:42 +02:00
gpio-ml-ioh.c
gpio: ml-ioh: Fix buffer underwrite on probe error path
2018-09-19 22:47:14 +02:00
gpio-mm-lantiq.c
gpio: mm-lantiq: Do not use gpiochip_get_data() in ltq_mm_save_regs()
2016-01-13 10:21:06 +01:00
gpio-mmio.c
gpio: mmio: add brcm,bcm6345 support
2016-08-11 16:17:05 +02:00
gpio-mockup.c
gpio: mockup: dynamically allocate memory for chip name
2017-11-30 08:39:13 +00:00
gpio-moxart.c
gpio: moxart: make explicitly non-modular
2016-03-31 15:03:13 +02:00
gpio-mpc8xxx.c
gpio: mpc8xxx: Add platform device to gpiochip->parent
2020-01-23 08:19:37 +01:00
gpio-mpc5200.c
gpio: Include linux/gpio.h instead of asm/gpio.h
2016-02-16 00:20:03 +01:00
gpio-msic.c
gpio: msic: drop unused MODULE_ tags from non-modular code
2016-08-23 11:22:09 +02:00
gpio-mvebu.c
gpio/mvebu: Use irq_domain_add_linear
2016-11-01 19:31:49 +01:00
gpio-mxc.c
This is the bulk of GPIO changes for the v4.9 series:
2016-10-05 11:49:09 -07:00
gpio-mxs.c
gpio: mxs: Get rid of external API call
2018-11-10 07:43:00 -08:00
gpio-octeon.c
gpio: octeon: Constify octeon_gpio_match table
2016-03-30 10:38:51 +02:00
gpio-omap.c
gpio: omap: ensure irq is enabled before wakeup
2019-08-04 09:33:19 +02:00
gpio-palmas.c
gpio: palmas: fix implicit assumption module.h is present
2016-09-15 13:57:43 +02:00
gpio-pca953x.c
gpio: pca953x: Move memcpy into mutex lock for set multiple
2016-11-08 10:29:47 +01:00
gpio-pcf857x.c
gpio: pcf857x: Fix missing first interrupt
2021-03-03 17:44:44 +01:00
gpio-pch.c
gpio: pch: Optimize pch_gpio_get()
2016-01-05 15:46:34 +01:00
gpio-pisosr.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-pl061.c
gpio: pl061: implement .get_direction()
2016-04-28 14:36:37 +02:00
gpio-pxa.c
gpio: pxa: handle corner case of unprobed device
2019-04-20 09:07:51 +02:00
gpio-rc5t583.c
gpio: rc5t583: make explicitly non-modular
2016-04-05 17:02:35 +02:00
gpio-rcar.c
gpio: rcar: Add r8a7796 (R-Car M3-W) support
2016-09-08 01:15:46 +02:00
gpio-rdc321x.c
gpio: remove redundant owner assignments of drivers
2016-06-07 09:35:16 +02:00
gpio-sa1100.c
gpio: sa1100: fix irq probing for ucb1x00
2016-09-08 00:42:57 +02:00
gpio-sch311x.c
gpio: remove redundant owner assignments of drivers
2016-06-07 09:35:16 +02:00
gpio-sch.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-sodaville.c
gpio: sodaville: make it explicitly non-modular
2016-05-11 13:46:49 +02:00
gpio-spear-spics.c
gpio: spear-spics: drop unused MODULE_ tags from non-modular code
2016-08-23 11:23:41 +02:00
gpio-sta2x11.c
gpio: sta2x11: make explicitly non-modular
2016-03-31 15:07:40 +02:00
gpio-stmpe.c
gpio: stmpe: i2c transfer are forbiden in atomic context
2018-02-03 17:05:34 +01:00
gpio-stp-xway.c
gpio: stp-xway: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:43 +05:30
gpio-sx150x.c
gpio: sx150x: fix implicit assumption module.h is present
2016-09-15 13:59:02 +02:00
gpio-syscon.c
gpio: syscon: Fix possible NULL ptr usage
2019-11-25 09:53:48 +01:00
gpio-tb10x.c
gpio: tb10x: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:44 +05:30
gpio-tc3589x.c
gpio: tc35894: fix up tc35894 interrupt configuration
2020-10-14 09:48:12 +02:00
gpio-tegra.c
gpio: tegra: mask GPIO IRQs during IRQ shutdown
2020-06-03 08:16:34 +02:00
gpio-timberdale.c
gpio: timberdale: make it explicitly non-modular
2016-05-11 13:49:11 +02:00
gpio-tpic2810.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-tps6586x.c
gpio: remove redundant owner assignments of drivers
2016-06-07 09:35:16 +02:00
gpio-tps65086.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-tps65218.c
gpio: tps65218: use devm_gpiochip_add_data() for gpio registration
2016-09-18 13:18:13 +02:00
gpio-tps65910.c
gpio: remove redundant owner assignments of drivers
2016-06-07 09:35:16 +02:00
gpio-tps65912.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-ts4800.c
gpio: ts4800: Fix module autoload
2016-10-21 14:55:07 +02:00
gpio-ts4900.c
gpio: ts4900: Do not set DAT and OE together
2022-03-16 12:49:01 +01:00
gpio-ts5500.c
gpio: ts5500: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:49 +05:30
gpio-twl4030.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-twl6040.c
gpio: twl6040: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:50 +05:30
gpio-tz1090-pdc.c
gpio: tz1090-pdc: use gpiochip data pointer
2016-01-05 11:21:16 +01:00
gpio-tz1090.c
gpio: tz1090: use gpiochip data pointer
2016-01-05 11:21:16 +01:00
gpio-ucb1400.c
gpio: ucb1400: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:50 +05:30
gpio-vf610.c
gpio: vf610: Mask all GPIO interrupts
2019-03-13 14:04:57 -07:00
gpio-viperboard.c
gpio: remove redundant owner assignments of drivers
2016-06-07 09:35:16 +02:00
gpio-vr41xx.c
gpio: convert remaining users to gpiochip_add_data()
2016-01-05 11:21:20 +01:00
gpio-vx855.c
gpio: vx855: use the new open drain callback
2016-04-14 14:03:28 +02:00
gpio-wcove.c
gpio: gpio-wcove: fix GPIO IRQ status mask
2018-03-24 11:00:17 +01:00
gpio-wm831x.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-wm8350.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-wm8994.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-ws16c48.c
gpio: ws16c48: Utilize the ISA bus driver
2016-05-02 09:32:04 -07:00
gpio-xgene-sb.c
gpio: xgene-sb: Use irq_domain_free_irqs_common()
2016-03-31 10:22:53 +02:00
gpio-xgene.c
gpio: xgene: mark PM functions as __maybe_unused
2018-02-25 11:05:52 +01:00
gpio-xilinx.c
gpio: xilinx: Add support to set multiple GPIO at once
2016-06-08 10:33:45 +02:00
gpio-xlp.c
gpio: Add ACPI support for XLP GPIO controller
2016-06-08 10:54:13 +02:00
gpio-xtensa.c
gpio: convert remaining users to gpiochip_add_data()
2016-01-05 11:21:20 +01:00
gpio-zevio.c
gpio: zevio: make it explicitly non-modular
2016-05-11 13:50:01 +02:00
gpio-zx.c
gpio: zx: make explicitly non-modular
2016-03-31 15:10:25 +02:00
gpio-zynq.c
gpio: zynq: Check return value of pm_runtime_get_sync
2021-07-20 16:21:12 +02:00
gpiolib-acpi.c
gpiolib: acpi: Do not set the IRQ type if the IRQ is already in use
2022-01-27 08:47:37 +01:00
gpiolib-legacy.c
Revert "gpiolib: Split GPIO flags parsing and GPIO configuration"
2016-07-04 16:51:29 +02:00
gpiolib-of.c
gpio: fix oops resulting from calling of_get_named_gpio(NULL, ...)
2020-08-21 11:01:56 +02:00
gpiolib-sysfs.c
gpio: fix documentation for gpiod_unexport
2016-09-12 14:53:33 +02:00
gpiolib.c
Revert "gpio: set up initial state from .get_direction()"
2020-04-24 07:59:08 +02:00
gpiolib.h
gpiolib: Mark gpio_suffixes array with __maybe_unused
2018-09-26 08:36:39 +02:00
Kconfig
gpio: max77620: Add missing dependency on GPIOLIB_IRQCHIP
2020-02-05 13:05:41 +00:00
Makefile
gpio: Remove GPIO_DEVRES option
2016-11-16 20:46:32 +01:00