On Fri, Nov 18, 2022 at 10:22 AM Matt Ranostay <mranostay@xxxxxx> wrote: > > Add support for TPS6594X PMICs GPIO interface that has 11 that can be > configured as input or outputs. > > Signed-off-by: Matt Ranostay <mranostay@xxxxxx> > --- > drivers/gpio/Kconfig | 9 +++++ > drivers/gpio/Makefile | 1 + > drivers/gpio/gpio-tps6594x.c | 78 ++++++++++++++++++++++++++++++++++++ > include/linux/mfd/tps6594x.h | 4 ++ > 4 files changed, 92 insertions(+) > create mode 100644 drivers/gpio/gpio-tps6594x.c > > diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig > index ec7cfd4f52b1..6b65c790efe7 100644 > --- a/drivers/gpio/Kconfig > +++ b/drivers/gpio/Kconfig > @@ -1405,6 +1405,15 @@ config GPIO_TPS65912 > help > This driver supports TPS65912 GPIO chip. > > +config GPIO_TPS6594X > + tristate "TI TPS6594X GPIO driver" > + depends on MFD_TPS6594X || COMPILE_TEST > + select REGMAP > + select GPIO_REGMAP > + help > + Select this option to enable GPIO driver for the TPS6954X > + PMIC chip family. There are 11 GPIOs that can be configured. > + > config GPIO_TPS68470 > tristate "TPS68470 GPIO" > depends on INTEL_SKL_INT3472 > diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile > index 010587025fc8..9892f9adc5b5 100644 > --- a/drivers/gpio/Makefile > +++ b/drivers/gpio/Makefile > @@ -159,6 +159,7 @@ obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o > obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o > obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o > obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o > +obj-$(CONFIG_GPIO_TPS6594X) += gpio-tps6594x.o > obj-$(CONFIG_GPIO_TPS68470) += gpio-tps68470.o > obj-$(CONFIG_GPIO_TQMX86) += gpio-tqmx86.o > obj-$(CONFIG_GPIO_TS4800) += gpio-ts4800.o > diff --git a/drivers/gpio/gpio-tps6594x.c b/drivers/gpio/gpio-tps6594x.c > new file mode 100644 > index 000000000000..733fedba70cb > --- /dev/null > +++ b/drivers/gpio/gpio-tps6594x.c > @@ -0,0 +1,78 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * GPIO driver for TI TPS6594x PMICs > + * > + * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/ > + */ > + > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > + > +#include <linux/gpio/regmap.h> > +#include <linux/gpio/driver.h> > +#include <linux/mfd/tps6594x.h> > + > +#define GPIO_BANK_SIZE 8 > +#define GPIO_CFG_MASK BIT(0) > + > +static int tps6594x_regmap_xlate(struct gpio_regmap *gpio, > + unsigned int base, unsigned int offset, > + unsigned int *reg, unsigned int *mask) > +{ > + if (base == TPS6594X_GPIO_CONF) { > + *reg = base + offset; > + *mask = GPIO_CFG_MASK; > + } else { > + unsigned int line = offset % GPIO_BANK_SIZE; > + unsigned int stride = offset / GPIO_BANK_SIZE; > + > + *reg = base + stride; > + *mask = BIT(line); > + } > + > + return 0; > +} > + > +static int tps6594x_gpio_probe(struct platform_device *pdev) > +{ > + struct gpio_regmap_config config = {0}; > + struct regmap *regmap; > + > + regmap = dev_get_regmap(pdev->dev.parent, NULL); > + if (!regmap) > + return -ENODEV; > + > + config.regmap = regmap; > + config.parent = &pdev->dev; > + config.ngpio = 11; > + config.ngpio_per_reg = GPIO_BANK_SIZE; > + > + config.reg_dat_base = TPS6594X_GPIO_IN; > + config.reg_set_base = TPS6594X_GPIO_OUT; > + config.reg_dir_out_base = TPS6594X_GPIO_CONF; > + config.reg_mask_xlate = tps6594x_regmap_xlate; > + > + return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(&pdev->dev, &config)); > +} > + > +static const struct of_device_id of_tps6594x_gpio_match[] = { > + { .compatible = "ti,tps6594-gpio", }, > + {}, > +}; > +MODULE_DEVICE_TABLE(of, of_tps6594x_gpio_match); > + > +static struct platform_driver tps6594x_gpio_driver = { > + .driver = { > + .name = "tps6594-gpio", > + .of_match_table = of_tps6594x_gpio_match, > + }, > + .probe = tps6594x_gpio_probe, > +}; > +module_platform_driver(tps6594x_gpio_driver); > + > +MODULE_ALIAS("platform:tps6594-gpio"); > +MODULE_AUTHOR("Matt Ranostay <mranostay@xxxxxx>"); > +MODULE_DESCRIPTION("TPS6594X GPIO driver"); > +MODULE_LICENSE("GPL"); > diff --git a/include/linux/mfd/tps6594x.h b/include/linux/mfd/tps6594x.h > index 5a6af0da9223..155618e4d5d0 100644 > --- a/include/linux/mfd/tps6594x.h > +++ b/include/linux/mfd/tps6594x.h > @@ -21,6 +21,10 @@ > #define TPS6594X_FSM_I2C_TRIGGERS 0x85 > #define TPS6594X_FSM_NSLEEP_TRIGGERS 0x86 > > +#define TPS6594X_GPIO_CONF 0x31 > +#define TPS6594X_GPIO_OUT 0x3d > +#define TPS6594X_GPIO_IN 0x3f > + > #define TPS6594X_RTC_SECONDS 0xb5 > #define TPS6594X_RTC_MINUTES 0xb6 > #define TPS6594X_RTC_HOURS 0xb7 > -- > 2.38.GIT > Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
