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1f3c85c22d
linux/drivers/pinctrl
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Michael Walle 1f3c85c22d pinctrl: microchip-sgpio: wait until output is actually set 
Right now, when a gpio value is set, the actual hardware pin gets set
asynchronously. When linux write the output register, it takes some time
until it is actually propagated to the output shift registers. If that
output port is connected to an I2C mux for example, the linux driver
assumes the I2C bus is already switched although it is not.

Fortunately, there is a single shot mode with a feedback: you can
trigger the single shot and the hardware will clear that bit once it has
finished the clocking and strobed the load signal of the shift
registers. This can take a considerable amount of time though.
Measuremens have shown that it takes up to a whole burst cycle gap which
is about 50ms on the largest setting. Therefore, we have to mark the
output bank as sleepable. To avoid unnecessary waiting, just trigger the
single shot if the value was actually changed.

Signed-off-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220226204507.2511633-6-michael@walle.cc
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2022-03-15 01:55:59 +01:00
..
actions pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
aspeed pinctrl: aspeed: fix unmet dependencies on MFD_SYSCON for PINCTRL_ASPEED 2021-12-16 04:28:49 +01:00
bcm pinctrl: bcm: add driver for BCM4908 pinmux 2022-01-25 01:42:13 +01:00
berlin pinctrl: berlin: as370: fix a typo s/spififib/spdifib 2019-10-16 14:12:55 +02:00
cirrus pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
freescale pinctrl: imx: Reduce printk message level for empty nodes 2022-03-15 01:48:05 +01:00
intel pinctrl: icelake: Add Ice Lake-N PCH pin controller support 2022-02-23 17:15:11 +02:00
mediatek pinctrl: mediatek: pinctrl-mtk-common: Simplify with dev_err_probe() 2022-03-15 01:24:16 +01:00
meson pinctrl: meson: add pinctrl driver support for Meson-S4 Soc 2022-01-30 02:52:45 +01:00
mvebu pinctrl: armada-37xx: Switch to use devm_kasprintf_strarray() 2021-11-18 18:40:09 +02:00
nomadik pinctrl: nomadik: Kconfig: Remove repeated config dependency 2021-09-17 00:08:14 +02:00
nuvoton pinctrl: nuvoton: Add driver for WPCM450 2022-03-15 01:16:20 +01:00
pxa drivers/pinctrl: remove redundant ret variable 2022-01-24 01:12:54 +01:00
qcom pinctrl: qcom: cleanup comments 2022-03-15 01:30:37 +01:00
ralink pinctrl: ralink: include 'ralink_regs.h' in 'pinctrl-mt7620.c' 2021-11-16 02:19:14 +01:00
renesas pinctrl: renesas: r8a779f0: Add Ethernet pins, groups, and functions 2022-02-25 13:45:49 +01:00
samsung pinctrl: samsung: improve wake irq info on console 2022-02-01 09:13:30 +01:00
spear pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
sprd pinctrl: sprd: Simplify bool comparison 2021-01-18 14:41:42 +01:00
stm32 pinctrl: stm32: consider the GPIO offset to expose all the GPIO lines 2021-12-16 04:14:56 +01:00
sunplus pinctrl: Add driver for Sunplus SP7021 2022-01-30 02:55:41 +01:00
sunxi pinctrl: sunxi: Use unique lockdep classes for IRQs 2022-02-19 02:12:37 +01:00
tegra pinctrl: tegra194: remove duplicate initializer again 2021-11-16 02:19:15 +01:00
ti pinctrl: ti: fix error return code of ti_iodelay_dt_node_to_map() 2021-04-08 15:57:14 +02:00
uniphier pinctrl: uniphier: Add USB device pinmux settings 2022-02-11 01:37:21 +01:00
visconti gpio: visconti: Add Toshiba Visconti GPIO support 2021-02-15 11:43:26 +01:00
vt8500 pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
core.c Pin control changes for the v5.16 kernel cycle 2021-11-05 08:24:17 -07:00
core.h pinctrl: Allow modules to use pinctrl_[un]register_mappings 2019-12-30 14:27:17 +01:00
devicetree.c pinctrl: devicetree: Keep deferring even on timeout 2020-09-12 18:19:53 +02:00
devicetree.h pinctrl: devicetree.c: remove orphan pinctrl_dt_has_hogs() 2019-10-04 23:26:23 +02:00
Kconfig pinctrl: Add driver for Sunplus SP7021 2022-01-30 02:55:41 +01:00
Makefile pinctrl: nuvoton: Add driver for WPCM450 2022-03-15 01:16:20 +01:00
pinconf-generic.c pinctrl: pinconf-generic: Print arguments for bias-pull-* 2022-03-15 01:24:15 +01:00
pinconf.c pinctrl: use to octal permissions for debugfs files 2021-03-10 14:41:58 +01:00
pinconf.h
pinctrl-amd.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-amd.h pinctrl: amd: Add irq field data 2021-09-17 00:48:45 +02:00
pinctrl-apple-gpio.c pinctrl: apple-gpio: fix flexible_array.cocci warnings 2021-12-02 02:34:45 +01:00
pinctrl-artpec6.c pinctrl: artpec6: fix __iomem on reg in set 2020-01-07 13:57:17 +01:00
pinctrl-as3722.c pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
pinctrl-at91-pio4.c pinctrl: at91-pio4: Use platform_get_irq() to get the interrupt 2022-01-24 01:12:54 +01:00
pinctrl-at91.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-at91.h
pinctrl-axp209.c pinctrl: Use new GPIO_LINE_DIRECTION 2020-02-21 15:19:42 +01:00
pinctrl-bm1880.c pinctrl: pinctrl-bm1880: Rename ill documented struct attribute entries 2020-07-16 15:13:55 +02:00
pinctrl-da850-pupd.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-da9062.c pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
pinctrl-digicolor.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-equilibrium.c pinctrl: equilibrium: Fix function addition in multiple groups 2021-10-25 00:20:01 +02:00
pinctrl-equilibrium.h pinctrl: Add pinmux & GPIO controller driver for a new SoC 2019-11-21 14:47:44 +01:00
pinctrl-falcon.c pinctrl: falcon: add missing put_device() call in pinctrl_falcon_probe() 2020-12-04 09:17:51 +01:00
pinctrl-gemini.c pinctrl: gemini: fix typos 2021-10-14 01:22:58 +02:00
pinctrl-ingenic.c This is the bulk of pin control changes for the v5.15 kernel cycle, 2021-09-02 14:22:56 -07:00
pinctrl-k210.c pinctrl: k210: Fix k210_fpioa_probe() 2021-08-11 15:03:53 +02:00
pinctrl-keembay.c pinctrl: keembay: rework loops looking for groups names 2021-12-22 02:57:27 +01:00
pinctrl-lantiq.c pinctrl: fix several typos 2020-04-28 13:26:49 +02:00
pinctrl-lantiq.h
pinctrl-lpc18xx.c pinctrl: Introduce MODE group in enum pin_config_param 2021-04-22 02:03:01 +02:00
pinctrl-max77620.c pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
pinctrl-mcp23s08_i2c.c pinctrl: mcp23s08: Split to three parts: core, I²C, SPI 2020-04-16 14:21:23 +02:00
pinctrl-mcp23s08_spi.c pinctrl: mcp23s08: Print error message when regmap init fails 2020-11-05 11:30:31 +01:00
pinctrl-mcp23s08.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-mcp23s08.h pinctrl: mcp23s08: Add optional reset GPIO 2021-06-12 01:58:10 +02:00
pinctrl-microchip-sgpio.c pinctrl: microchip-sgpio: wait until output is actually set 2022-03-15 01:55:59 +01:00
pinctrl-ocelot.c pinctrl: ocelot: Fix interrupt parsing 2022-03-15 01:52:33 +01:00
pinctrl-oxnas.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-palmas.c
pinctrl-pic32.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-pic32.h
pinctrl-pistachio.c pinctrl: Bulk conversion to generic_handle_domain_irq() 2021-08-12 11:39:39 +01:00
pinctrl-rk805.c pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
pinctrl-rockchip.c pinctrl/rockchip: fix gpio device creation 2021-12-02 02:24:53 +01:00
pinctrl-rockchip.h pinctrl/rockchip: add a queue for deferred pin output settings on probe 2021-09-18 01:32:20 +02:00
pinctrl-single.c This is the bulk of pin control changes for the v5.15 kernel cycle, 2021-09-02 14:22:56 -07:00
pinctrl-st.c pinctrl: st: Switch to use devm_kasprintf_strarray() 2021-11-18 18:40:10 +02:00
pinctrl-starfive.c pinctrl: starfive: fix semicolon.cocci warnings 2022-02-11 01:47:54 +01:00
pinctrl-stmfx.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-sx150x.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-tb10x.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-thunderbay.c pinctrl: Add Intel Thunder Bay pinctrl driver 2021-12-09 03:17:39 +01:00
pinctrl-utils.c pinctrl: use krealloc_array() 2020-12-15 12:13:37 -08:00
pinctrl-utils.h
pinctrl-xway.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-zynq.c pinctrl: zynq: use module_platform_driver to simplify the code 2022-03-15 01:46:13 +01:00
pinctrl-zynqmp.c pinctrl: zynqmp: Unify pin naming 2021-11-19 10:38:16 +02:00
pinmux.c pinctrl: add one more "const" for generic function groups 2021-12-22 02:57:27 +01:00
pinmux.h pinctrl: add one more "const" for generic function groups 2021-12-22 02:57:27 +01:00