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Mark Featherston 54fd6b2eb1 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: 9c6686322d ("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 13:21:46 +01:00
..
Kconfig gpio: AMD8111 and TQMX86 require HAS_IOPORT_MAP 2021-07-07 08:22:58 -04:00
Makefile ARM: SoC driver updates for v5.4 2019-09-16 15:52:38 -07:00
TODO gpio: Add GPIOLIB_IRQCHIP cleanup to TODO 2019-06-14 10:16:15 +02:00
gpio-74x164.c gpio: 74x164: Convert to use SPDX identifier 2019-03-26 18:38:07 +01:00
gpio-74xx-mmio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-104-dio-48e.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-104-idi-48.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-104-idio-16.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-adnp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-adp5520.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
gpio-adp5588.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
gpio-altera-a10sr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-altera.c gpio: altera: Pass irqchip when adding gpiochip 2019-07-03 10:24:12 +02:00
gpio-amd-fch.c drivers: gpio: amd-fch: make resource struct const 2019-07-03 10:10:32 +02:00
gpio-amd8111.c gpio: amd8111: Include proper header 2018-01-13 22:22:49 +01:00
gpio-amdpt.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-arizona.c gpio: arizona: put pm_runtime in case of failure 2020-07-29 10:18:26 +02:00
gpio-aspeed.c gpio: aspeed: Convert aspeed_gpio.lock to raw_spinlock 2022-01-27 09:19:43 +01:00
gpio-ath79.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-bcm-kona.c gpio: bcm-kona: Fix return value of bcm_kona_gpio_probe() 2020-06-03 08:21:21 +02:00
gpio-bd9571mwv.c
…
gpio-bd70528.c gpio: bd70528: Use correct unit for debounce times 2019-11-12 11:18:52 +01:00
gpio-brcmstb.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-bt8xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-cadence.c gpio: cadence: Add missing MODULE_DEVICE_TABLE 2021-06-03 08:59:08 +02:00
gpio-clps711x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-creg-snps.c gpio: creg-snps: use devm_platform_ioremap_resource() to simplify code 2019-09-11 14:50:02 +01:00
gpio-crystalcove.c gpio: crystalcove: Convert to use SPDX identifier 2019-02-08 15:55:40 +02:00
gpio-cs5535.c docs: driver-model: move it to the driver-api book 2019-07-15 11:03:02 -03:00
gpio-da9052.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-da9055.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-davinci.c gpio: davinci: silence error prints in case of EPROBE_DEFER 2019-07-15 11:52:34 +02:00
gpio-dln2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
gpio-dwapb.c gpio: dwapb: Append MODULE_ALIAS for platform driver 2020-06-24 17:50:21 +02:00
gpio-eic-sprd.c gpio: eic-sprd: break loop when getting NULL device resource 2020-12-30 11:50:55 +01:00
gpio-em.c gpio: em: use a helper variable for &pdev->dev 2019-07-22 14:40:07 +02:00
gpio-ep93xx.c gpio: ep93xx: Fix single irqchip with multi gpiochips 2021-02-17 10:35:14 +01:00
gpio-exar.c gpio: exar: Fix bad handling for ida_simple_get error path 2020-06-03 08:21:19 +02:00
gpio-f7188x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-ftgpio010.c gpio: ftgpio: Fix an error handling path in 'ftgpio_gpio_probe()' 2019-08-23 12:02:34 +02:00
gpio-ge.c gpio: ge: Fix build warning 2018-05-16 14:35:24 +02:00
gpio-gpio-mm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-grgpio.c gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap() 2020-02-24 08:36:26 +01:00
gpio-gw-pld.c gpio: Add a Gateworks PLD GPIO driver 2019-02-09 11:33:37 +01:00
gpio-hlwd.c gpio: hlwd: Pass irqchip when adding gpiochip 2019-08-15 09:57:29 +02:00
gpio-htc-egpio.c gpio: htc-egpio: Remove unused exported htc_egpio_get_wakeup_irq() 2019-09-12 10:07:44 +01:00
gpio-ich.c gpio: ich: Convert to use SPDX identifier 2018-12-07 17:34:07 +02:00
gpio-intel-mid.c gpio: intel-mid: Move hardware initialization to callback 2019-10-15 01:18:51 +02:00
gpio-iop.c Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
gpio-it87.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 300 2019-06-05 17:37:00 +02:00
gpio-ixp4xx.c gpio: updates for v5.4 2019-09-03 16:04:19 +02:00
gpio-janz-ttl.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-kempld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 294 2019-06-05 17:36:38 +02:00
gpio-loongson.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-loongson1.c drivers: gpio: loongon1: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-lp873x.c gpio: lp873x: Include the right header 2018-05-16 14:35:24 +02:00
gpio-lp3943.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
gpio-lp87565.c
…
gpio-lpc18xx.c drivers: gpio: lpc18xx: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-lpc32xx.c gpio: lpc32xx: allow building on non-lpc32xx targets 2019-08-15 21:33:07 +02:00
gpio-lynxpoint.c gpio: lynxpoint: Setup correct IRQ handlers 2020-01-04 19:18:20 +01:00
gpio-madera.c gpio: madera: Add support for Cirrus Logic CS47L92 2019-08-05 11:45:24 +02:00
gpio-max730x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max732x.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-max3191x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max7300.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max7301.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max77620.c gpio: max77620: Fixup debounce delays 2019-11-12 11:13:54 +01:00
gpio-max77650.c gpio: max77650: add MODULE_ALIAS() 2019-07-29 00:03:52 +02:00
gpio-mb86s7x.c gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
gpio-mc9s08dz60.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
gpio-mc33880.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
gpio-menz127.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
gpio-merrifield.c Revert "gpio: merrifield: Pass irqchip when adding gpiochip" 2019-11-03 23:41:11 +01:00
gpio-ml-ioh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
gpio-mlxbf.c gpio: mlxbf: remove unused including <linux/version.h> 2019-04-08 08:47:06 +02:00
gpio-mm-lantiq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-mmio.c gpio: mmio: Drop bgpio_dir_inverted 2019-04-08 11:17:43 +02:00
gpio-mockup.c gpio: mockup: fix resource leak in error path 2020-10-07 08:01:24 +02:00
gpio-moxtet.c drivers: gpio: Add support for GPIOs over Moxtet bus 2019-08-14 15:30:56 +02:00
gpio-mpc8xxx.c gpio: mpc8xxx: Add platform device to gpiochip->parent 2020-01-17 19:49:03 +01:00
gpio-mpc5200.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
gpio-msic.c gpio: msic: Convert to use SPDX identifier 2019-02-08 15:55:41 +02:00
gpio-mt7621.c gpio: mt7621: Pass irqchip when adding gpiochip 2019-08-23 12:05:06 +02:00
gpio-mvebu.c gpio: mvebu: fix pwm .get_state period calculation 2021-01-30 13:54:09 +01:00
gpio-mxc.c gpio: mxc: Only get the second IRQ when there is more than one IRQ 2020-01-04 19:16:27 +01:00
gpio-mxs.c gpio: mxs: read pin level directly instead of using .get 2018-12-21 11:29:57 +01:00
gpio-octeon.c drivers: gpio: octeon: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-omap.c gpio: omap: Save and restore sysconfig 2021-04-28 13:19:14 +02:00
gpio-palmas.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-pca953x.c gpio: pca953x: Improve bias setting 2021-10-20 11:40:15 +02:00
gpio-pcf857x.c gpio: pcf857x: Fix missing first interrupt 2021-03-04 10:26:49 +01:00
gpio-pch.c gpio: pch: Use dev_get_drvdata 2019-07-23 18:59:05 +03:00
gpio-pci-idio-16.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-pcie-idio-24.c gpio: pcie-idio-24: Enable PEX8311 interrupts 2020-11-18 19:20:31 +01:00
gpio-pisosr.c gpio-pisosr: add support for get_multiple 2018-07-29 21:55:33 +02:00
gpio-pl061.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-pmic-eic-sprd.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-pxa.c gpio: pxa: Fix return value of pxa_gpio_probe() 2020-06-03 08:21:21 +02:00
gpio-raspberrypi-exp.c gpio: raspberrypi-exp: decrease refcount on firmware dt node 2018-12-17 15:28:30 +01:00
gpio-rc5t583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-rcar.c gpio: rcar: Fix runtime PM imbalance on error 2020-10-01 13:18:04 +02:00
gpio-rdc321x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-reg.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 233 2019-06-19 17:09:06 +02:00
gpio-sa1100.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-sama5d2-piobu.c gpio: sama5d2-piobu: Set proper output level for direction_output 2019-01-11 10:34:37 +01:00
gpio-sch.c gpio: sch: Remove write-only core_base 2019-04-23 13:08:33 +02:00
gpio-sch311x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-siox.c gpio: siox: explicitly support only threaded irqs 2020-10-07 08:01:23 +02:00
gpio-sodaville.c gpio: sodaville: Convert to use SPDX identifier 2018-12-07 17:34:08 +02:00
gpio-spear-spics.c drivers: gpio: spear-spics: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-sprd.c gpio: sprd: Clear interrupt when setting the type as edge 2020-10-07 08:01:27 +02:00
gpio-sta2x11.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
gpio-stmpe.c gpio: Initialize the irqchip valid_mask with a callback 2019-09-11 01:09:37 +01:00
gpio-stp-xway.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-syscon.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-tb10x.c gpio: Remove dev_err() usage after platform_get_irq() 2019-08-05 13:25:34 +02:00
gpio-tc3589x.c gpio: tc35894: fix up tc35894 interrupt configuration 2020-10-07 08:01:24 +02:00
gpio-tegra.c gpio: tegra: mask GPIO IRQs during IRQ shutdown 2020-06-03 08:21:09 +02:00
gpio-tegra186.c gpio: tegra186: Fix chip_data type confusion 2022-03-02 11:41:17 +01:00
gpio-thunderx.c Revert "gpio: thunderx: Switch to GPIOLIB_IRQCHIP" 2020-01-23 08:22:29 +01:00
gpio-timberdale.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
gpio-tpic2810.c
…
gpio-tps6586x.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65086.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65218.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 111 2019-05-24 17:39:01 +02:00
gpio-tps65910.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65912.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps68470.c gpio: tps68470: Update to SPDX license identifier 2018-02-23 15:26:42 +01:00
gpio-tqmx86.c gpio: tqmx86: really make IRQ optional 2021-08-12 13:20:57 +02:00
gpio-ts4800.c drivers: gpio: ts4800: use devm_platform_ioremap_resource() 2019-04-05 00:04:28 +07:00
gpio-ts4900.c gpio: ts4900: Do not set DAT and OE together 2022-03-16 13:21:46 +01:00
gpio-ts5500.c gpio: ts5500: Delete platform data handling 2018-09-04 08:22:47 +02:00
gpio-twl4030.c gpio: twl4030: Implement .get_direction() 2018-09-10 08:48:51 +02:00
gpio-twl6040.c gpio: twl6040: Implement .get_direction() 2018-09-10 08:49:22 +02:00
gpio-ucb1400.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-uniphier.c gpio: uniphier: Fix void functions to remove return value 2021-09-30 10:09:23 +02:00
gpio-vf610.c gpio: vf610: Pass irqchip when adding gpiochip 2019-08-23 09:41:18 +02:00
gpio-viperboard.c gpio: viperboard: Replace 'unsigned' with 'unsigned int' 2019-08-05 11:26:58 +02:00
gpio-vr41xx.c gpio: vr41xx: Use devm_platform_ioremap_resource() 2019-06-27 15:56:51 +01:00
gpio-vx855.c gpio: vx855: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wcove.c gpio: wcove: Convert to use SPDX identifier 2019-02-08 15:55:41 +02:00
gpio-winbond.c
…
gpio-wm831x.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wm8350.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wm8994.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-ws16c48.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
gpio-xgene-sb.c gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
gpio-xgene.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
gpio-xilinx.c gpio: xilinx: Fix bug where the wrong GPIO register is written to 2020-02-19 19:53:02 +01:00
gpio-xlp.c gpio: xlp: Pass irqchip when adding gpiochip 2019-08-15 09:55:07 +02:00
gpio-xra1403.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-xtensa.c gpio: xtensa: fix driver build 2020-01-09 10:19:59 +01:00
gpio-zevio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-zx.c gpio: zx: Pass irqchip when adding gpiochip 2019-08-23 09:40:44 +02:00
gpio-zynq.c gpio: zynq: Check return value of pm_runtime_get_sync 2021-07-20 16:10:44 +02:00
gpiolib-acpi.c gpiolib: acpi: Do not set the IRQ type if the IRQ is already in use 2022-01-27 09:19:41 +01:00
gpiolib-acpi.h gpiolib: acpi: make acpi_can_fallback_to_crs() static 2019-09-10 11:34:20 +01:00
gpiolib-devprop.c gpiolib: devprop: Fix syntax error 2019-04-08 11:20:12 +02:00
gpiolib-devres.c gpio: devres: Switch to EXPORT_SYMBOL_GPL() 2019-09-11 14:47:39 +01:00
gpiolib-legacy.c gpio: Use SPDX header for core library 2018-09-25 09:08:48 +02:00
gpiolib-of.c mmc: core: Rework wp-gpio handling 2020-02-19 19:53:10 +01:00
gpiolib-of.h gpio: of: Make of_get_named_gpiod_flags() private 2019-09-11 14:45:01 +01:00
gpiolib-sysfs.c gpio: sysfs: Obey valid_mask 2021-04-21 12:56:13 +02:00
gpiolib.c gpio: fix locking open drain IRQ lines 2020-06-03 08:21:28 +02:00
gpiolib.h gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.h 2019-07-31 00:57:21 +02:00
sgpio-aspeed.c gpio/aspeed-sgpio: don't enable all interrupts by default 2020-10-07 08:01:28 +02:00