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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-11 23:22:06 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-11 23:22:06 +0300 |
commit | fa722ecb93c22f084c9a9913469a940a8f0e1d5b (patch) | |
tree | f22bb1ea6a58cba1511e5b3547aa5f809753b686 /drivers/gpio | |
parent | 282aa44c21708835517ffaa31c63ab651248cf5e (diff) | |
parent | e565615c5486935e3b6080dc06a94c6fbd0b4264 (diff) | |
download | linux-fa722ecb93c22f084c9a9913469a940a8f0e1d5b.tar.xz |
Merge tag 'mfd-next-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Device Support:
- Add support for Lakefield PCH to Intel LPSS PCI
Remove Device Support:
- Remove support for ROHM BD70528 Power Management IC
New Functionality:
- Add support for SMBus and I2C mode to Dialog DA9062/61 PMIC
- Enable I2C4 on Microsoft Surface Go & Go 2
Fix-ups:
- Device Tree changes (inc. YAML conversion); maxim,max77686,
rohm,bd9571mwv, syscon, brcm,twd, google,cros-ec
- Use __maybe_unused instead of #ifery; atmel-flexcom
- Allow the Regmap API to handle endianess internally; ntxec
- Utilise I2C's .resume_noirq call-back; atmel-flexcom
- Remove unused code; ti_am335x_tscadc
- Use CPU-id instead of ACPI _HRV to ID variants; intel_soc_pmic_core
- Allow device to power-off right from .probe(); tps65910
- Trivial (whitespace, typos, etc); da9063
Bug Fixes:
- Fix ordering issues during probe; intel-lpss-acpi
- Fix correct clock speed; intel-lpss-pci"
* tag 'mfd-next-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (25 commits)
mfd: google,cros-ec: Fix property name for MediaTek rpmsg
dt-bindings: mfd: Fix typo "DA9093" -> "DA9063"
mfd: ntxec: Change return type of ntxec_reg8 from __be16 to u16
mfd: tps65910: Set PWR_OFF bit during driver probe
mfd: intel_soc_pmic: Use CPU-id check instead of _HRV check to differentiate variants
mfd: intel-lpss: Fix I2C4 not being available on the Microsoft Surface Go & Go 2
dt-bindings: mfd: Add Broadcom's Timer-Watchdog block
dt-bindings: mfd: Add Freecom system controller
mfd: Kconfig: Change INTEL_SOC_PMIC_CHTDC_TI to bool
dt-bindings: mfd: syscon: Add samsung,exynos850-sysreg
mfd: da9062: Support SMBus and I2C mode
mfd: intel-lpss-pci: Fix clock speed for 38a8 UART
mfd: intel-lpss: Fix too early PM enablement in the ACPI ->probe()
mfd: ti_am335x_tscadc: Drop the CNTRLREG_TSC_8WIRE macro
mfd: stmpe: Support disabling sub-functions
mfd: atmel-flexcom: Use .resume_noirq
mfd: atmel-flexcom: Remove #ifdef CONFIG_PM_SLEEP
dt-bindings: mfd: bd9571mwv: Convert to json-schema
mfd: intel-lpss: Add Intel Lakefield PCH PCI IDs
dt-bindings: mfd: maxim,max77686: Convert to dtschema
...
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/Kconfig | 11 | ||||
-rw-r--r-- | drivers/gpio/Makefile | 1 | ||||
-rw-r--r-- | drivers/gpio/gpio-bd70528.c | 230 |
3 files changed, 0 insertions, 242 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 60d9374c72c0..1ca78263f0f7 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1133,17 +1133,6 @@ config GPIO_ARIZONA help Support for GPIOs on Wolfson Arizona class devices. -config GPIO_BD70528 - tristate "ROHM BD70528 GPIO support" - depends on MFD_ROHM_BD70528 - help - Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs - available on the ROHM PMIC in total. The GPIOs can also - generate interrupts. - - This driver can also be built as a module. If so, the module - will be called gpio-bd70528. - config GPIO_BD71815 tristate "ROHM BD71815 PMIC GPIO support" depends on MFD_ROHM_BD71828 diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 71ee9fc2ff83..ed5f9b1a75ce 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -38,7 +38,6 @@ obj-$(CONFIG_GPIO_ASPEED_SGPIO) += gpio-aspeed-sgpio.o obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o obj-$(CONFIG_GPIO_BCM_XGS_IPROC) += gpio-xgs-iproc.o -obj-$(CONFIG_GPIO_BD70528) += gpio-bd70528.o obj-$(CONFIG_GPIO_BD71815) += gpio-bd71815.o obj-$(CONFIG_GPIO_BD71828) += gpio-bd71828.o obj-$(CONFIG_GPIO_BD9571MWV) += gpio-bd9571mwv.o diff --git a/drivers/gpio/gpio-bd70528.c b/drivers/gpio/gpio-bd70528.c deleted file mode 100644 index 397a50d6bc65..000000000000 --- a/drivers/gpio/gpio-bd70528.c +++ /dev/null @@ -1,230 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (C) 2018 ROHM Semiconductors -// gpio-bd70528.c ROHM BD70528MWV gpio driver - -#include <linux/gpio/driver.h> -#include <linux/mfd/rohm-bd70528.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/regmap.h> - -#define GPIO_IN_REG(offset) (BD70528_REG_GPIO1_IN + (offset) * 2) -#define GPIO_OUT_REG(offset) (BD70528_REG_GPIO1_OUT + (offset) * 2) - -struct bd70528_gpio { - struct regmap *regmap; - struct device *dev; - struct gpio_chip gpio; -}; - -static int bd70528_set_debounce(struct bd70528_gpio *bdgpio, - unsigned int offset, unsigned int debounce) -{ - u8 val; - - switch (debounce) { - case 0: - val = BD70528_DEBOUNCE_DISABLE; - break; - case 1 ... 15000: - val = BD70528_DEBOUNCE_15MS; - break; - case 15001 ... 30000: - val = BD70528_DEBOUNCE_30MS; - break; - case 30001 ... 50000: - val = BD70528_DEBOUNCE_50MS; - break; - default: - dev_err(bdgpio->dev, - "Invalid debounce value %u\n", debounce); - return -EINVAL; - } - return regmap_update_bits(bdgpio->regmap, GPIO_IN_REG(offset), - BD70528_DEBOUNCE_MASK, val); -} - -static int bd70528_get_direction(struct gpio_chip *chip, unsigned int offset) -{ - struct bd70528_gpio *bdgpio = gpiochip_get_data(chip); - int val, ret; - - /* Do we need to do something to IRQs here? */ - ret = regmap_read(bdgpio->regmap, GPIO_OUT_REG(offset), &val); - if (ret) { - dev_err(bdgpio->dev, "Could not read gpio direction\n"); - return ret; - } - if (val & BD70528_GPIO_OUT_EN_MASK) - return GPIO_LINE_DIRECTION_OUT; - - return GPIO_LINE_DIRECTION_IN; -} - -static int bd70528_gpio_set_config(struct gpio_chip *chip, unsigned int offset, - unsigned long config) -{ - struct bd70528_gpio *bdgpio = gpiochip_get_data(chip); - - switch (pinconf_to_config_param(config)) { - case PIN_CONFIG_DRIVE_OPEN_DRAIN: - return regmap_update_bits(bdgpio->regmap, - GPIO_OUT_REG(offset), - BD70528_GPIO_DRIVE_MASK, - BD70528_GPIO_OPEN_DRAIN); - break; - case PIN_CONFIG_DRIVE_PUSH_PULL: - return regmap_update_bits(bdgpio->regmap, - GPIO_OUT_REG(offset), - BD70528_GPIO_DRIVE_MASK, - BD70528_GPIO_PUSH_PULL); - break; - case PIN_CONFIG_INPUT_DEBOUNCE: - return bd70528_set_debounce(bdgpio, offset, - pinconf_to_config_argument(config)); - break; - default: - break; - } - return -ENOTSUPP; -} - -static int bd70528_direction_input(struct gpio_chip *chip, unsigned int offset) -{ - struct bd70528_gpio *bdgpio = gpiochip_get_data(chip); - - /* Do we need to do something to IRQs here? */ - return regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset), - BD70528_GPIO_OUT_EN_MASK, - BD70528_GPIO_OUT_DISABLE); -} - -static void bd70528_gpio_set(struct gpio_chip *chip, unsigned int offset, - int value) -{ - int ret; - struct bd70528_gpio *bdgpio = gpiochip_get_data(chip); - u8 val = (value) ? BD70528_GPIO_OUT_HI : BD70528_GPIO_OUT_LO; - - ret = regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset), - BD70528_GPIO_OUT_MASK, val); - if (ret) - dev_err(bdgpio->dev, "Could not set gpio to %d\n", value); -} - -static int bd70528_direction_output(struct gpio_chip *chip, unsigned int offset, - int value) -{ - struct bd70528_gpio *bdgpio = gpiochip_get_data(chip); - - bd70528_gpio_set(chip, offset, value); - return regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset), - BD70528_GPIO_OUT_EN_MASK, - BD70528_GPIO_OUT_ENABLE); -} - -#define GPIO_IN_STATE_MASK(offset) (BD70528_GPIO_IN_STATE_BASE << (offset)) - -static int bd70528_gpio_get_o(struct bd70528_gpio *bdgpio, unsigned int offset) -{ - int ret; - unsigned int val; - - ret = regmap_read(bdgpio->regmap, GPIO_OUT_REG(offset), &val); - if (!ret) - ret = !!(val & BD70528_GPIO_OUT_MASK); - else - dev_err(bdgpio->dev, "GPIO (out) state read failed\n"); - - return ret; -} - -static int bd70528_gpio_get_i(struct bd70528_gpio *bdgpio, unsigned int offset) -{ - unsigned int val; - int ret; - - ret = regmap_read(bdgpio->regmap, BD70528_REG_GPIO_STATE, &val); - - if (!ret) - ret = !(val & GPIO_IN_STATE_MASK(offset)); - else - dev_err(bdgpio->dev, "GPIO (in) state read failed\n"); - - return ret; -} - -static int bd70528_gpio_get(struct gpio_chip *chip, unsigned int offset) -{ - int ret; - struct bd70528_gpio *bdgpio = gpiochip_get_data(chip); - - /* - * There is a race condition where someone might be changing the - * GPIO direction after we get it but before we read the value. But - * application design where GPIO direction may be changed just when - * we read GPIO value would be pointless as reader could not know - * whether the returned high/low state is caused by input or output. - * Or then there must be other ways to mitigate the issue. Thus - * locking would make no sense. - */ - ret = bd70528_get_direction(chip, offset); - if (ret == GPIO_LINE_DIRECTION_OUT) - ret = bd70528_gpio_get_o(bdgpio, offset); - else if (ret == GPIO_LINE_DIRECTION_IN) - ret = bd70528_gpio_get_i(bdgpio, offset); - else - dev_err(bdgpio->dev, "failed to read GPIO direction\n"); - - return ret; -} - -static int bd70528_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct bd70528_gpio *bdgpio; - int ret; - - bdgpio = devm_kzalloc(dev, sizeof(*bdgpio), GFP_KERNEL); - if (!bdgpio) - return -ENOMEM; - bdgpio->dev = dev; - bdgpio->gpio.parent = dev->parent; - bdgpio->gpio.label = "bd70528-gpio"; - bdgpio->gpio.owner = THIS_MODULE; - bdgpio->gpio.get_direction = bd70528_get_direction; - bdgpio->gpio.direction_input = bd70528_direction_input; - bdgpio->gpio.direction_output = bd70528_direction_output; - bdgpio->gpio.set_config = bd70528_gpio_set_config; - bdgpio->gpio.can_sleep = true; - bdgpio->gpio.get = bd70528_gpio_get; - bdgpio->gpio.set = bd70528_gpio_set; - bdgpio->gpio.ngpio = 4; - bdgpio->gpio.base = -1; -#ifdef CONFIG_OF_GPIO - bdgpio->gpio.of_node = dev->parent->of_node; -#endif - bdgpio->regmap = dev_get_regmap(dev->parent, NULL); - if (!bdgpio->regmap) - return -ENODEV; - - ret = devm_gpiochip_add_data(dev, &bdgpio->gpio, bdgpio); - if (ret) - dev_err(dev, "gpio_init: Failed to add bd70528-gpio\n"); - - return ret; -} - -static struct platform_driver bd70528_gpio = { - .driver = { - .name = "bd70528-gpio" - }, - .probe = bd70528_probe, -}; - -module_platform_driver(bd70528_gpio); - -MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); -MODULE_DESCRIPTION("BD70528 voltage regulator driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:bd70528-gpio"); |