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5ae4cb94b3133d00857bb2909dae779782db40cb
linux/drivers/gpio
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Andrew Jeffery 5ae4cb94b3 gpio: aspeed: Add debounce support 
Each GPIO in the Aspeed GPIO controller can choose one of four input
debounce states: to disable debouncing for an input, or select from one
of three programmable debounce timer values. Each GPIO in a
four-bank-set is assigned one bit in each of two debounce configuration
registers dedicated to the set, and selects a debounce state by
configuring the two bits to select one of the four options.

The limitation on debounce timer values is managed by mapping offsets
onto a configured timer value and keeping count of the number of users
a timer has. Timer values are configured on a first-come-first-served
basis.

A small twist in the hardware design is that the debounce configuration
register numbering is reversed with respect to the binary representation
of the debounce timer of interest (i.e. debounce register 1 represents
bit 1, and debounce register 2 represents bit 0 of the timer numbering).

Tested on an AST2500EVB with additional inspection under QEMU's
romulus-bmc machine.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-04-24 14:49:53 +02:00
..
devres.c
gpiolib: Fix spelling of 'successful'
2017-03-14 10:51:28 +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: make use of raw_spinlock variants
2017-03-16 21:52:07 +01:00
gpio-104-idi-48.c
gpio: 104-idi-48: make use of raw_spinlock variants
2017-03-28 14:55:08 +02:00
gpio-104-idio-16.c
gpio: 104-idio-16: make use of raw_spinlock variants
2017-03-28 11:12:36 +02:00
gpio-adnp.c
gpio: set explicit nesting on drivers
2016-11-25 15:12:27 +01:00
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: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:34:24 +05:30
gpio-altera-a10sr.c
gpio: altera-a10sr: Drop unnecessary gpiochip_remove
2016-10-25 13:58:42 +02:00
gpio-altera.c
gpio: altera: make use of raw_spinlock variants
2017-03-16 21:52:06 +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: arizona: Correct handling for reading input GPIOs
2017-04-07 12:14:04 +02:00
gpio-aspeed.c
gpio: aspeed: Add debounce support
2017-04-24 14:49:53 +02:00
gpio-ath79.c
gpio: ath79: make use of raw_spinlock variants
2017-03-16 21:52:08 +01:00
gpio-axp209.c
gpio: axp209: use correct register for GPIO input status
2016-11-24 16:19:02 +01:00
gpio-bcm-kona.c
gpio: bcm-kona: make use of raw_spinlock variants
2017-03-16 21:52:07 +01:00
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-clps711x.c
gpio: clps711x: Remove board support
2016-06-08 10:49:58 +02:00
gpio-crystalcove.c
gpio: set explicit nesting on drivers
2016-11-25 15:12:27 +01:00
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
gpio: davinci: use devm_irq_alloc_descs()
2017-03-15 11:16:36 +01:00
gpio-dln2.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-dwapb.c
gpio: dwapb: Add support for next generation of X-Gene SoC
2017-03-06 14:34:53 +01:00
gpio-em.c
…
gpio-ep93xx.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-etraxfs.c
gpio: etraxfs: make use of raw_spinlock variants
2017-03-16 21:52:08 +01:00
gpio-exar.c
gpio: exar: Set proper output level in exar_direction_output
2017-03-15 11:16:31 +01:00
gpio-f7188x.c
gpio: f7188x: Add F71889A GPIO support.
2017-04-07 12:26:42 +02:00
gpio-ftgpio010.c
gpio: gemini: rename to match Faraday IP
2017-03-22 09:40:55 +01:00
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: gpio-mm: Add support for GPIO names
2017-02-01 16:05:28 +01:00
gpio-grgpio.c
…
gpio-htc-egpio.c
gpio: htc-egpio: read output value from cache
2016-11-13 11:50:22 +01:00
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
2017-01-26 10:00:20 +01:00
gpio-iop.c
gpio: iop: Use generic GPIO MMIO functions for driver
2016-09-12 15:28:18 +02:00
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
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
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: simplify adding threaded interrupts
2016-11-25 15:12:27 +01:00
gpio-max7300.c
…
gpio-max7301.c
…
gpio-max77620.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-mb86s7x.c
gpio: mb86s7x: use builtin_platform_driver
2016-11-22 10:16:17 +01:00
gpio-mc9s08dz60.c
gpio: mc9s08dz60: make explicitly non-modular
2016-03-31 15:02:09 +02:00
gpio-mc33880.c
…
gpio-mcp23s08.c
gpio: mcp23s08: use regmap
2017-01-30 15:57:46 +01:00
gpio-menz127.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-merrifield.c
gpio: merrifield: Don't use GPIOF_DIR_IN / GPIOF_DIR_OUT
2017-03-23 14:06:46 +01:00
gpio-ml-ioh.c
gpio: ml-ioh: use resource management for irqs
2017-03-15 11:16:34 +01:00
gpio-mm-lantiq.c
gpio: update my email address
2016-12-30 09:18:10 +01:00
gpio-mmio.c
gpio: mmio: add support for NI 169445 NAND GPIO
2017-03-23 09:49:06 +01:00
gpio-mockup.c
gpio: mockup: use devm_irq_alloc_descs()
2017-03-15 11:16:32 +01:00
gpio-mpc8xxx.c
gpio: mpc8xxx: Correct irq handler function
2016-10-24 02:20:40 +02:00
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: Add limited PWM support
2017-04-24 11:16:25 +02:00
gpio-mxc.c
gpio: mxc: use devm_irq_alloc_descs()
2017-03-15 11:16:37 +01:00
gpio-mxs.c
gpio: mxs: use devm_irq_alloc_descs()
2017-03-15 11:16:37 +01:00
gpio-octeon.c
gpio: octeon: Constify octeon_gpio_match table
2016-03-30 10:38:51 +02:00
gpio-omap.c
gpio: omap: use devm_irq_alloc_descs()
2017-03-15 11:16:33 +01:00
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: Expand comment for "reset" GPIO in ACPI case
2017-03-23 10:42:44 +01:00
gpio-pcf857x.c
gpio: simplify adding threaded interrupts
2016-11-25 15:12:27 +01:00
gpio-pch.c
gpio: pch: use resource management for irqs
2017-03-15 11:16:33 +01:00
gpio-pci-idio-16.c
gpio: pci-idio-16: make use of raw_spinlock variants
2017-03-28 11:13:59 +02:00
gpio-pisosr.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-pl061.c
gpio: pl061: make use of raw_spinlock variants
2017-03-16 21:52:09 +01:00
gpio-pxa.c
gpio: pxa: use devm_irq_alloc_descs()
2017-03-15 11:16:35 +01:00
gpio-rc5t583.c
gpio: rc5t583: make explicitly non-modular
2016-04-05 17:02:35 +02:00
gpio-rcar.c
gpio: rcar: Fine-grained Runtime PM support
2016-12-28 01:33:02 +01:00
gpio-rdc321x.c
gpio: remove redundant owner assignments of drivers
2016-06-07 09:35:16 +02:00
gpio-reg.c
gpio: gpio-reg: add irq mapping for gpio-reg users
2017-03-24 14:05:00 +01:00
gpio-sa1100.c
gpio: sa1100: implement get_direction method
2017-03-24 14:04:37 +01:00
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: use resource management for irqs
2017-03-15 11:16:36 +01:00
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: use resource management for irqs
2017-03-15 11:16:38 +01:00
gpio-stmpe.c
Merge tag 'gpio-v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
2016-12-13 07:54:57 -08:00
gpio-stp-xway.c
gpio: update my email address
2016-12-30 09:18:10 +01:00
gpio-syscon.c
gpio: syscon: Change the compatibility string
2016-06-08 10:48:17 +02:00
gpio-tb10x.c
gpio: tb10x: Use devm_gpiochip_add_data() for gpio registration
2016-02-23 20:35:44 +05:30
gpio-tc3589x.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-tegra.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
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
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
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: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
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: twl4030: use devm_irq_alloc_descs()
2017-03-15 11:16:32 +01:00
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.c
…
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: use builtin_platform_driver
2016-11-24 16:19:02 +01:00
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
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-wcove.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-wm831x.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-wm8350.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-wm8994.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-ws16c48.c
gpio: ws16c48: make use of raw_spinlock variants
2017-03-16 21:52:09 +01:00
gpio-xgene-sb.c
gpio: xgene-sb: Use irq_domain_free_irqs_common()
2016-03-31 10:22:53 +02:00
gpio-xgene.c
Merge tag 'gpio-v4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
2016-05-17 17:39:42 -07:00
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: xlp: Update for ARCH_THUNDER2
2017-03-16 21:52:10 +01:00
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 use of raw_spinlock variants
2017-03-16 21:52:10 +01:00
gpio-zynq.c
gpio: Added zynq specific check for special pins on bank zero
2016-09-23 15:26:20 +02:00
gpiolib-acpi.c
gpio: acpi: Ignore -EPROBE_DEFER for unselected gpioints
2017-03-16 21:52:13 +01:00
gpiolib-devprop.c
gpio: gpiolib-devprop: Check chip->parent pointer before dereferencing
2016-10-25 20:23:19 +02:00
gpiolib-legacy.c
Revert "gpiolib: Split GPIO flags parsing and GPIO configuration"
2016-07-04 16:51:29 +02:00
gpiolib-of.c
gpio: core: Decouple open drain/source flag with active low/high
2017-04-07 12:23:29 +02:00
gpiolib-sysfs.c
gpio: fix documentation for gpiod_unexport
2016-09-12 14:53:33 +02:00
gpiolib.c
gpio: Use unsigned int for interrupt numbers
2017-04-13 14:16:23 +02:00
gpiolib.h
gpiolib: Update documentation of struct acpi_gpio_info
2017-01-11 12:09:36 +01:00
Kconfig
gpio: add generic single-register fixed-direction GPIO driver
2017-03-24 14:04:46 +01:00
Makefile
gpio: add generic single-register fixed-direction GPIO driver
2017-03-24 14:04:46 +01:00