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0988ffa096
linux/drivers/gpio
History
William Breathitt Gray 0988ffa096 gpio: ws16c48: Migrate to the regmap API 
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver.

The WinSystems WS16C48 provides the following registers:

    Offset 0x0-0x5: Port 0-5 I/O
    Offset 0x6: Int_Pending
    Offset 0x7: Page/Lock
    Offset 0x8-0xA (Page 1): Pol_0-Pol_2
    Offset 0x8-0xA (Page 2): Enab_0-Enab_2
    Offset 0x8-0xA (Page 3): Int_ID0-Int_ID2

Port 0-5 I/O provides access to 48 lines of digital I/O across six
registers, each bit position corresponding to the respective line.
Writing a 1 to a respective bit position causes that output pin to sink
current, while writing a 0 to the same bit position causes that output
pin to go to a high-impedance state and allows it to be used an input.
Reads on a port report the inverted state (0 = high, 1 = low) of an I/O
pin when used in input mode. Interrupts are supported on Port 0-2.

Int_Pending is a read-only register that reports the combined state of
the INT_ID0 through INT_ID2 registers; an interrupt pending is indicated
when any of the low three bits are set.

The Page/Lock register provides the following bits:

    Bit 0-5: Port 0-5 I/O Lock
    Bit 6-7: Page 0-3 Selection

For Bits 0-5, writing a 1 to a respective bit position locks the output
state of the corresponding I/O port. Writing the page number to Bits 6-7
selects that respective register page for use.

Pol_0-Pol_2 are accessible when Page 1 is selected. Writing a 1 to a
respective bit position selects the rising edge detection interrupts for
that input line, while writing a 0 to the same bit position selects the
falling edge detection interrupts.

Enab_0-Enab_2 are accessible when Page 2 is selected. Writing a 1 to a
respective bit position enables interrupts for that input line, while
writing a 0 to that same bit position clears and disables interrupts for
that input line.

Int_ID0-Int_ID2 are accessible when Page 3 is selected. A respective bit
when read as a 1 indicates that an edge of the polarity set in the
corresponding polarity register was detected for the corresponding input
line. Writing any value to this register clears all pending interrupts
for the register.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/f59de81e80f7198bcfa9a15615c459c38b5d0e08.1680708357.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-08-11 14:23:35 +02:00
..
gpio-74x164.c
gpio-74xx-mmio.c gpio: 74xx-mmio: remove unneeded platform_set_drvdata() call 2023-07-29 16:03:17 +02:00
gpio-104-dio-48e.c gpio: 104-dio-48e: Add Counter/Timer support 2023-07-27 09:37:33 +02:00
gpio-104-idi-48.c gpio: 104-idi-48: Enable use_raw_spinlock for idi48_regmap_config 2023-04-11 21:08:31 +02:00
gpio-104-idio-16.c gpio: 104-idio-16: Migrate to the regmap API 2023-08-11 14:23:29 +02:00
gpio-adnp.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-adp5520.c
gpio-aggregator.c gpio: aggregator: Set up a parser of delay line parameters 2023-06-16 11:02:07 +02:00
gpio-altera-a10sr.c gpio: altera-a10sr: remove redundant of_match_ptr 2023-08-03 15:58:45 +02:00
gpio-altera.c gpio: altera: drop of_match_ptr for ID table 2023-03-15 10:38:03 +01:00
gpio-amd8111.c gpio: amd8111: Fix PCI device reference count leak 2022-11-30 17:18:35 +01:00
gpio-amd-fch.c
gpio-amdpt.c gpio: use raw spinlock for gpio chip shadowed data 2022-04-25 12:10:02 +02:00
gpio-arizona.c gpio: arizona: Remove unused header(s) 2022-10-19 17:03:55 +03:00
gpio-aspeed-sgpio.c gpio: aspeed-sgpio: Convert to immutable irq_chip 2023-03-10 16:17:20 +01:00
gpio-aspeed.c gpio: aspeed: Convert to immutable irq_chip 2023-03-10 16:17:19 +01:00
gpio-ath79.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-bcm-kona.c gpio: bcm-kona: Drop unused pdev member in private data structure 2023-07-19 13:26:22 +02:00
gpio-bd9571mwv.c
gpio-bd71815.c
gpio-bd71828.c
gpio-brcmstb.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-bt8xx.c
gpio-cadence.c gpio: cadence: Convert to immutable irq_chip 2023-03-10 16:17:24 +01:00
gpio-clps711x.c gpio: clps711x: remove redundant of_match_ptr() 2023-08-03 15:58:46 +02:00
gpio-creg-snps.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-crystalcove.c gpio: crystalcove: Join function declarations and long lines 2022-06-06 14:09:16 +03:00
gpio-cs5535.c
gpio-da9052.c gpio: da9052: Remove unused header(s) 2022-10-19 17:03:55 +03:00
gpio-da9055.c
gpio-davinci.c gpio: davinci: Remove redundant dev_err_probe() 2023-07-29 15:58:32 +02:00
gpio-dln2.c gpio: dln2: make irq_chip immutable 2022-06-06 14:09:16 +03:00
gpio-ds4520.c gpio: ds4520: Add ADI DS4520 GPIO Expander Support 2023-07-29 15:56:33 +02:00
gpio-dwapb.c gpio: dwapb: Don't print error on -EPROBE_DEFER 2022-06-10 14:26:15 +02:00
gpio-eic-sprd.c gpio: eic-sprd: remove unneeded platform_set_drvdata() call 2023-07-29 16:07:04 +02:00
gpio-elkhartlake.c gpio: elkhartlake: Introduce Intel Elkhart Lake PSE GPIO 2023-03-06 17:10:46 +02:00
gpio-em.c
gpio-en7523.c
gpio-ep93xx.c gpio: ep93xx: remove unused variable 2023-01-27 14:05:38 +01:00
gpio-exar.c gpio: exar: remove unneeded platform_set_drvdata() call 2023-07-29 16:04:38 +02:00
gpio-f7188x.c gpio-f7188x: fix chip name and pin count on Nuvoton chip 2023-05-23 10:47:41 +02:00
gpio-ftgpio010.c gpio: ftgpio010: Do not check for 0 return after calling platform_get_irq() 2023-08-03 15:54:11 +02:00
gpio-fxl6408.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-ge.c gpio: ge: Replace GPLv2 boilerplate with SPDX 2023-07-27 09:33:07 +02:00
gpio-gpio-mm.c gpio: gpio-mm: Migrate to regmap API 2023-01-30 15:55:28 +01:00
gpio-grgpio.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-gw-pld.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-hisi.c gpio: hisi: Convert to immutable irq_chip 2023-03-10 16:17:27 +01:00
gpio-hlwd.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-htc-egpio.c
gpio-i8255.c gpio: i8255: Remove unused legacy interface 2023-01-30 15:55:28 +01:00
gpio-i8255.h gpio: i8255: Remove unused legacy interface 2023-01-30 15:55:28 +01:00
gpio-ich.c gpio: ich: Use devm_gpiochip_add_data() to simplify remove path 2023-03-09 16:08:39 +02:00
gpio-idio-16.c gpio: idio-16: Remove unused legacy interface 2023-08-11 14:23:32 +02:00
gpio-idio-16.h gpio: idio-16: Remove unused legacy interface 2023-08-11 14:23:32 +02:00
gpio-idt3243x.c gpio: idt3243x: Convert to immutable irq_chip 2023-03-10 16:17:30 +01:00
gpio-imx-scu.c gpio: remove MODULE_LICENSE in non-modules 2023-03-06 10:47:22 +01:00
gpio-it87.c
gpio-ixp4xx.c gpio: ixp4xx: remove redundant of_match_ptr() 2023-08-03 15:58:48 +02:00
gpio-janz-ttl.c
gpio-kempld.c
gpio-latch.c gpio: Add gpio latch driver 2022-10-26 14:52:01 +02:00
gpio-ljca.c gpio: Add support for Intel LJCA USB GPIO driver 2023-04-26 11:40:29 +01:00
gpio-logicvc.c gpio: logicvc: remove unneeded platform_set_drvdata() call 2023-07-29 16:05:50 +02:00
gpio-loongson1.c gpio: loongson1: Add DT support 2023-03-23 14:31:18 +01:00
gpio-loongson-64bit.c gpio: loongson: Remove unnecessary .owner 2023-03-10 16:27:28 +01:00
gpio-loongson.c
gpio-lp873x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE 2022-06-10 14:51:36 +02:00
gpio-lp3943.c gpio: lp3943: remove unneeded platform_set_drvdata() call 2023-08-01 21:14:48 +02:00
gpio-lp87565.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE 2022-06-10 14:51:36 +02:00
gpio-lpc18xx.c gpio: lpc18xx: Remove unused of_gpio.h inclusion 2023-06-19 14:45:29 +02:00
gpio-lpc32xx.c gpio: lpc32xx: remove redundant CONFIG_OF and of_match_ptr() 2023-08-03 15:58:49 +02:00
gpio-madera.c
gpio-max730x.c
gpio-max732x.c gpio: max732x: remove redundant CONFIG_OF and of_match_ptr() 2023-08-03 15:56:30 +02:00
gpio-max3191x.c gpio: max3191x: remove redundant of_match_ptr() 2023-08-03 15:58:50 +02:00
gpio-max7300.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-max7301.c
gpio-max77620.c gpio: max77620: remove unneeded platform_set_drvdata() call 2023-08-01 21:15:23 +02:00
gpio-max77650.c
gpio-mb86s7x.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-mc33880.c
gpio-menz127.c gpio: use raw spinlock for gpio chip shadowed data 2022-04-25 12:10:02 +02:00
gpio-merrifield.c gpio: merrifield: Utilise temporary variable for struct device 2023-03-06 17:10:46 +02:00
gpio-ml-ioh.c gpio: ml-ioh: Convert to use managed functions pcim* and devm_* 2022-05-20 19:20:35 +02:00
gpio-mlxbf2.c gpio: mlxbf2: Convert to immutable irq_chip 2023-03-10 16:17:32 +01:00
gpio-mlxbf3.c gpio: mlxbf3: Add gpio driver support 2023-06-16 11:08:32 +02:00
gpio-mlxbf.c
gpio-mm-lantiq.c gpio: mm-lantiq: Fix typo in the newly added header filename 2023-03-23 16:22:18 +02:00
gpio-mmio.c gpio: mmio: handle "ngpios" properly in bgpio_init() 2023-07-18 20:59:25 +02:00
gpio-mockup.c gpio: mockup: Fix mode of debugfs files 2023-05-17 11:19:32 +02:00
gpio-moxtet.c
gpio-mpc8xxx.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-mpc5200.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-msc313.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-mt7621.c gpio updates for v6.1-rc1 2022-10-08 09:46:29 -07:00
gpio-mvebu.c gpio: mvebu: Use IS_REACHABLE instead of IS_ENABLED for CONFIG_PWM 2023-01-30 15:55:31 +01:00
gpio-mxc.c gpio: mxc: Improve PM configuration 2023-07-25 11:56:25 +02:00
gpio-mxs.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-octeon.c
gpio-omap.c gpio: omap: Remove redundant dev_err_probe() and zero value handle code 2023-07-29 15:50:44 +02:00
gpio-palmas.c gpio: palmas: remove unnecessary call to platform_set_drvdata() 2023-08-01 21:22:38 +02:00
gpio-pca953x.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-pca9570.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-pcf857x.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-pch.c gpio: pch: Change PCI device macros 2022-06-21 18:01:11 +03:00
gpio-pci-idio-16.c gpio: pci-idio-16: Migrate to the regmap API 2023-08-11 14:23:31 +02:00
gpio-pcie-idio-24.c gpio: pcie-idio-24: Migrate to the regmap API 2023-08-11 14:23:33 +02:00
gpio-pisosr.c gpio: pisosr: Use devm_gpiochip_add_data() to simplify remove path 2023-07-20 17:22:10 +02:00
gpio-pl061.c gpio: pl061: Add missing header(s) 2022-10-24 12:29:26 +03:00
gpio-pmic-eic-sprd.c gpio: pmic-eic-sprd: remove unnecessary call to platform_set_drvdata() 2023-08-01 21:25:30 +02:00
gpio-pxa.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-raspberrypi-exp.c gpio: raspberrypi-exp: remove redundant of_match_ptr() 2023-08-03 15:58:52 +02:00
gpio-rc5t583.c gpio: rc5t583: remove unneeded call to platform_set_drvdata() 2023-08-01 21:26:48 +02:00
gpio-rcar.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-rda.c gpio: rda: Convert to immutable irq_chip 2023-03-23 14:31:18 +01:00
gpio-rdc321x.c
gpio-realtek-otto.c gpio: realtek-otto: switch to 32-bit I/O 2022-08-31 17:46:30 +02:00
gpio-reg.c gpio: reg: Add missing header(s) 2023-03-06 12:33:02 +02:00
gpio-regmap.c gpio: regmap: Add missing header(s) 2023-03-06 12:33:02 +02:00
gpio-rockchip.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-sa1100.c gpio: sa1100: include <mach/generic.h> 2023-05-17 11:56:24 +02:00
gpio-sama5d2-piobu.c gpio: sama5d2-piobu: remove unneeded call to platform_set_drvdata() 2023-08-01 21:27:38 +02:00
gpio-sch311x.c gpio: sch311x: Use devm_gpiochip_add_data() to simplify remove path 2023-05-17 11:52:14 +02:00
gpio-sch.c gpio: sch: remove unneeded call to platform_set_drvdata() 2023-08-03 15:44:46 +02:00
gpio-sifive.c gpio: sifive: Allow building the driver as a module 2023-07-25 12:00:42 +02:00
gpio-sim.c gpio: sim: use sysfs_streq() and avoid an strdup() 2023-08-11 13:58:06 +02:00
gpio-siox.c gpio: siox: Convert to immutable irq_chip 2023-03-23 14:31:18 +01:00
gpio-sl28cpld.c gpio: sl28cpld: Replace irqchip mask_invert with unmask_base 2022-11-15 15:41:45 +01:00
gpio-sodaville.c
gpio-spear-spics.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
gpio-sprd.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-stmpe.c gpio: stmpe: Convert to immutable irq_chip 2023-03-23 14:31:18 +01:00
gpio-stp-xway.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-syscon.c gpio: syscon: remove unneeded call to platform_set_drvdata() 2023-08-03 15:44:49 +02:00
gpio-tangier.c gpio: tangier: calculate number of ctx using temporary variable 2023-05-23 10:22:25 +02:00
gpio-tangier.h gpio: elkhartlake: Introduce Intel Elkhart Lake PSE GPIO 2023-03-06 17:10:46 +02:00
gpio-tb10x.c gpio: Use of_property_read_bool() for boolean properties 2023-03-15 10:43:08 +01:00
gpio-tc3589x.c gpio: tc3589x: Make irqchip immutable 2022-10-03 20:56:46 +02:00
gpio-tegra186.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-tegra.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-thunderx.c gpio: thunderx: Convert to immutable irq_chip 2023-03-23 14:31:18 +01:00
gpio-timberdale.c gpio: timberdale: remove unneeded call to platform_set_drvdata() 2023-08-03 15:44:49 +02:00
gpio-tn48m.c
gpio-tpic2810.c gpio: Switch i2c drivers back to use .probe() 2023-05-23 10:09:11 +02:00
gpio-tps6586x.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-tps65086.c gpio: tps65086: Use devm_gpiochip_add_data() to simplify remove path 2023-05-17 11:40:40 +02:00
gpio-tps65218.c gpio: tps65218: remove redundant of_match_ptr() 2023-08-03 15:55:34 +02:00
gpio-tps65219.c gpio: tps65219: add GPIO support for TPS65219 PMIC 2023-06-13 14:49:56 +02:00
gpio-tps65910.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-tps65912.c
gpio-tps68470.c
gpio-tqmx86.c gpio: tqmx86: remove unneeded call to platform_set_drvdata() 2023-08-03 15:47:58 +02:00
gpio-ts4800.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-ts4900.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-ts5500.c
gpio-twl4030.c This removes all usage of global GPIO numbers from 2023-05-31 17:01:34 +02:00
gpio-twl6040.c
gpio-uniphier.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-vf610.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-viperboard.c
gpio-virtio.c
gpio-visconti.c gpio: visconti: Convert to immutable irq_chip 2023-03-23 14:31:18 +01:00
gpio-vx855.c gpio: vx855: remove unneeded call to platform_set_drvdata() 2023-08-03 15:48:15 +02:00
gpio-wcd934x.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-wcove.c gpio: wcove: make irq_chip immutable 2022-06-06 14:09:16 +03:00
gpio-winbond.c gpio: winbond: Fix error code in winbond_gpio_get() 2022-06-23 16:29:55 +02:00
gpio-wm831x.c
gpio-wm8350.c gpio: wm8350: Remove unused header(s) 2022-10-24 12:29:41 +03:00
gpio-wm8994.c
gpio-ws16c48.c gpio: ws16c48: Migrate to the regmap API 2023-08-11 14:23:35 +02:00
gpio-xgene-sb.c
gpio-xgene.c
gpio-xgs-iproc.c gpio: xgs-iproc: Convert to immutable irq_chip 2023-03-23 14:31:18 +01:00
gpio-xilinx.c gpio: Explicitly include correct DT includes 2023-07-19 13:24:01 +02:00
gpio-xlp.c gpio: xlp: Convert to immutable irq_chip 2023-03-23 14:31:19 +01:00
gpio-xra1403.c gpio: xra1403: remove redundant of_match_ptr() 2023-08-03 15:58:54 +02:00
gpio-xtensa.c
gpio-zevio.c gpio: zevio: remove unneeded call to platform_set_drvdata() 2023-08-03 15:48:27 +02:00
gpio-zynq.c gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres 2023-06-19 14:50:28 +02:00
gpio-zynqmp-modepin.c
gpiolib-acpi.c gpiolib: acpi: Don't use GPIO chip fwnode in acpi_gpiochip_find() 2023-07-10 11:26:13 +02:00
gpiolib-acpi.h gpiolib: Clean up headers 2023-03-06 12:33:02 +02:00
gpiolib-cdev.c gpiolib: Introduce gpio_device_get() and gpio_device_put() 2023-01-30 15:55:29 +01:00
gpiolib-cdev.h
gpiolib-devres.c gpiolib: of: remove [devm_]gpiod_get_from_of_node() APIs 2023-01-30 15:55:28 +01:00
gpiolib-legacy.c gpiolib: Kill unused GPIOF_OPEN_* 2023-06-01 09:52:39 +02:00
gpiolib-of.c gpiolib: of: Don't use GPIO chip fwnode in of_gpiochip_*() 2023-07-10 11:25:55 +02:00
gpiolib-of.h gpiolib: Clean up headers 2023-03-06 12:33:02 +02:00
gpiolib-swnode.c gpiolib: Clean up headers 2023-03-06 12:33:02 +02:00
gpiolib-swnode.h gpiolib: add support for software nodes 2022-11-15 11:21:43 +01:00
gpiolib-sysfs.c Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
gpiolib-sysfs.h gpiolib: Clean up headers 2022-10-24 12:30:26 +03:00
gpiolib.c gpio: mmio: handle "ngpios" properly in bgpio_init() 2023-07-18 20:59:25 +02:00
gpiolib.h gpio: mmio: handle "ngpios" properly in bgpio_init() 2023-07-18 20:59:25 +02:00
Kconfig gpio: ws16c48: Migrate to the regmap API 2023-08-11 14:23:35 +02:00
Makefile gpio: ds4520: Add ADI DS4520 GPIO Expander Support 2023-07-29 15:56:33 +02:00
TODO gpiolib: split of_mm_gpio_chip out of linux/of_gpio.h 2023-03-06 12:33:01 +02:00