diff options
Diffstat (limited to 'drivers/pinctrl/stm32/pinctrl-stm32.c')
| -rw-r--r-- | drivers/pinctrl/stm32/pinctrl-stm32.c | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c new file mode 100644 index 000000000000..8deb566ed4cd --- /dev/null +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -0,0 +1,829 @@ +/* + * Copyright (C) Maxime Coquelin 2015 + * Author: Maxime Coquelin <mcoquelin.stm32@gmail.com> + * License terms: GNU General Public License (GPL), version 2 + * + * Heavily based on Mediatek's pinctrl driver + */ +#include <linux/clk.h> +#include <linux/gpio/driver.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/pinctrl/consumer.h> +#include <linux/pinctrl/machine.h> +#include <linux/pinctrl/pinconf.h> +#include <linux/pinctrl/pinconf-generic.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> +#include <linux/platform_device.h> +#include <linux/reset.h> +#include <linux/slab.h> + +#include "../core.h" +#include "../pinconf.h" +#include "../pinctrl-utils.h" +#include "pinctrl-stm32.h" + +#define STM32_GPIO_MODER 0x00 +#define STM32_GPIO_TYPER 0x04 +#define STM32_GPIO_SPEEDR 0x08 +#define STM32_GPIO_PUPDR 0x0c +#define STM32_GPIO_IDR 0x10 +#define STM32_GPIO_ODR 0x14 +#define STM32_GPIO_BSRR 0x18 +#define STM32_GPIO_LCKR 0x1c +#define STM32_GPIO_AFRL 0x20 +#define STM32_GPIO_AFRH 0x24 + +#define STM32_GPIO_PINS_PER_BANK 16 + +#define gpio_range_to_bank(chip) \ + container_of(chip, struct stm32_gpio_bank, range) + +static const char * const stm32_gpio_functions[] = { + "gpio", "af0", "af1", + "af2", "af3", "af4", + "af5", "af6", "af7", + "af8", "af9", "af10", + "af11", "af12", "af13", + "af14", "af15", "analog", +}; + +struct stm32_pinctrl_group { + const char *name; + unsigned long config; + unsigned pin; +}; + +struct stm32_gpio_bank { + void __iomem *base; + struct clk *clk; + spinlock_t lock; + struct gpio_chip gpio_chip; + struct pinctrl_gpio_range range; +}; + +struct stm32_pinctrl { + struct device *dev; + struct pinctrl_dev *pctl_dev; + struct pinctrl_desc pctl_desc; + struct stm32_pinctrl_group *groups; + unsigned ngroups; + const char **grp_names; + struct stm32_gpio_bank *banks; + unsigned nbanks; + const struct stm32_pinctrl_match_data *match_data; +}; + +static inline int stm32_gpio_pin(int gpio) +{ + return gpio % STM32_GPIO_PINS_PER_BANK; +} + +static inline u32 stm32_gpio_get_mode(u32 function) +{ + switch (function) { + case STM32_PIN_GPIO: + return 0; + case STM32_PIN_AF(0) ... STM32_PIN_AF(15): + return 2; + case STM32_PIN_ANALOG: + return 3; + } + + return 0; +} + +static inline u32 stm32_gpio_get_alt(u32 function) +{ + switch (function) { + case STM32_PIN_GPIO: + return 0; + case STM32_PIN_AF(0) ... STM32_PIN_AF(15): + return function - 1; + case STM32_PIN_ANALOG: + return 0; + } + + return 0; +} + +/* GPIO functions */ + +static inline void __stm32_gpio_set(struct stm32_gpio_bank *bank, + unsigned offset, int value) +{ + if (!value) + offset += STM32_GPIO_PINS_PER_BANK; + + clk_enable(bank->clk); + + writel_relaxed(BIT(offset), bank->base + STM32_GPIO_BSRR); + + clk_disable(bank->clk); +} + +static int stm32_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} + +static void stm32_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(chip->base + offset); +} + +static int stm32_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct stm32_gpio_bank *bank = gpiochip_get_data(chip); + int ret; + + clk_enable(bank->clk); + + ret = !!(readl_relaxed(bank->base + STM32_GPIO_IDR) & BIT(offset)); + + clk_disable(bank->clk); + + return ret; +} + +static void stm32_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct stm32_gpio_bank *bank = gpiochip_get_data(chip); + + __stm32_gpio_set(bank, offset, value); +} + +static int stm32_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_gpio_direction_input(chip->base + offset); +} + +static int stm32_gpio_direction_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct stm32_gpio_bank *bank = gpiochip_get_data(chip); + + __stm32_gpio_set(bank, offset, value); + pinctrl_gpio_direction_output(chip->base + offset); + + return 0; +} + +static struct gpio_chip stm32_gpio_template = { + .request = stm32_gpio_request, + .free = stm32_gpio_free, + .get = stm32_gpio_get, + .set = stm32_gpio_set, + .direction_input = stm32_gpio_direction_input, + .direction_output = stm32_gpio_direction_output, +}; + +/* Pinctrl functions */ + +static struct stm32_pinctrl_group * +stm32_pctrl_find_group_by_pin(struct stm32_pinctrl *pctl, u32 pin) +{ + int i; + + for (i = 0; i < pctl->ngroups; i++) { + struct stm32_pinctrl_group *grp = pctl->groups + i; + + if (grp->pin == pin) + return grp; + } + + return NULL; +} + +static bool stm32_pctrl_is_function_valid(struct stm32_pinctrl *pctl, + u32 pin_num, u32 fnum) +{ + int i; + + for (i = 0; i < pctl->match_data->npins; i++) { + const struct stm32_desc_pin *pin = pctl->match_data->pins + i; + const struct stm32_desc_function *func = pin->functions; + + if (pin->pin.number != pin_num) + continue; + + while (func && func->name) { + if (func->num == fnum) + return true; + func++; + } + + break; + } + + return false; +} + +static int stm32_pctrl_dt_node_to_map_func(struct stm32_pinctrl *pctl, + u32 pin, u32 fnum, struct stm32_pinctrl_group *grp, + struct pinctrl_map **map, unsigned *reserved_maps, + unsigned *num_maps) +{ + if (*num_maps == *reserved_maps) + return -ENOSPC; + + (*map)[*num_maps].type = PIN_MAP_TYPE_MUX_GROUP; + (*map)[*num_maps].data.mux.group = grp->name; + + if (!stm32_pctrl_is_function_valid(pctl, pin, fnum)) { + dev_err(pctl->dev, "invalid function %d on pin %d .\n", + fnum, pin); + return -EINVAL; + } + + (*map)[*num_maps].data.mux.function = stm32_gpio_functions[fnum]; + (*num_maps)++; + + return 0; +} + +static int stm32_pctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev, + struct device_node *node, + struct pinctrl_map **map, + unsigned *reserved_maps, + unsigned *num_maps) +{ + struct stm32_pinctrl *pctl; + struct stm32_pinctrl_group *grp; + struct property *pins; + u32 pinfunc, pin, func; + unsigned long *configs; + unsigned int num_configs; + bool has_config = 0; + unsigned reserve = 0; + int num_pins, num_funcs, maps_per_pin, i, err; + + pctl = pinctrl_dev_get_drvdata(pctldev); + + pins = of_find_property(node, "pinmux", NULL); + if (!pins) { + dev_err(pctl->dev, "missing pins property in node %s .\n", + node->name); + return -EINVAL; + } + + err = pinconf_generic_parse_dt_config(node, pctldev, &configs, + &num_configs); + if (err) + return err; + + if (num_configs) + has_config = 1; + + num_pins = pins->length / sizeof(u32); + num_funcs = num_pins; + maps_per_pin = 0; + if (num_funcs) + maps_per_pin++; + if (has_config && num_pins >= 1) + maps_per_pin++; + + if (!num_pins || !maps_per_pin) + return -EINVAL; + + reserve = num_pins * maps_per_pin; + + err = pinctrl_utils_reserve_map(pctldev, map, + reserved_maps, num_maps, reserve); + if (err) + return err; + + for (i = 0; i < num_pins; i++) { + err = of_property_read_u32_index(node, "pinmux", + i, &pinfunc); + if (err) + return err; + + pin = STM32_GET_PIN_NO(pinfunc); + func = STM32_GET_PIN_FUNC(pinfunc); + + if (pin >= pctl->match_data->npins) { + dev_err(pctl->dev, "invalid pin number.\n"); + return -EINVAL; + } + + if (!stm32_pctrl_is_function_valid(pctl, pin, func)) { + dev_err(pctl->dev, "invalid function.\n"); + return -EINVAL; + } + + grp = stm32_pctrl_find_group_by_pin(pctl, pin); + if (!grp) { + dev_err(pctl->dev, "unable to match pin %d to group\n", + pin); + return -EINVAL; + } + + err = stm32_pctrl_dt_node_to_map_func(pctl, pin, func, grp, map, + reserved_maps, num_maps); + if (err) + return err; + + if (has_config) { + err = pinctrl_utils_add_map_configs(pctldev, map, + reserved_maps, num_maps, grp->name, + configs, num_configs, + PIN_MAP_TYPE_CONFIGS_GROUP); + if (err) + return err; + } + } + + return 0; +} + +static int stm32_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev, + struct device_node *np_config, + struct pinctrl_map **map, unsigned *num_maps) +{ + struct device_node *np; + unsigned reserved_maps; + int ret; + + *map = NULL; + *num_maps = 0; + reserved_maps = 0; + + for_each_child_of_node(np_config, np) { + ret = stm32_pctrl_dt_subnode_to_map(pctldev, np, map, + &reserved_maps, num_maps); + if (ret < 0) { + pinctrl_utils_dt_free_map(pctldev, *map, *num_maps); + return ret; + } + } + + return 0; +} + +static int stm32_pctrl_get_groups_count(struct pinctrl_dev *pctldev) +{ + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + + return pctl->ngroups; +} + +static const char *stm32_pctrl_get_group_name(struct pinctrl_dev *pctldev, + unsigned group) +{ + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + + return pctl->groups[group].name; +} + +static int stm32_pctrl_get_group_pins(struct pinctrl_dev *pctldev, + unsigned group, + const unsigned **pins, + unsigned *num_pins) +{ + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + + *pins = (unsigned *)&pctl->groups[group].pin; + *num_pins = 1; + + return 0; +} + +static const struct pinctrl_ops stm32_pctrl_ops = { + .dt_node_to_map = stm32_pctrl_dt_node_to_map, + .dt_free_map = pinctrl_utils_dt_free_map, + .get_groups_count = stm32_pctrl_get_groups_count, + .get_group_name = stm32_pctrl_get_group_name, + .get_group_pins = stm32_pctrl_get_group_pins, +}; + + +/* Pinmux functions */ + +static int stm32_pmx_get_funcs_cnt(struct pinctrl_dev *pctldev) +{ + return ARRAY_SIZE(stm32_gpio_functions); +} + +static const char *stm32_pmx_get_func_name(struct pinctrl_dev *pctldev, + unsigned selector) +{ + return stm32_gpio_functions[selector]; +} + +static int stm32_pmx_get_func_groups(struct pinctrl_dev *pctldev, + unsigned function, + const char * const **groups, + unsigned * const num_groups) +{ + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + + *groups = pctl->grp_names; + *num_groups = pctl->ngroups; + + return 0; +} + +static void stm32_pmx_set_mode(struct stm32_gpio_bank *bank, + int pin, u32 mode, u32 alt) +{ + u32 val; + int alt_shift = (pin % 8) * 4; + int alt_offset = STM32_GPIO_AFRL + (pin / 8) * 4; + unsigned long flags; + + clk_enable(bank->clk); + spin_lock_irqsave(&bank->lock, flags); + + val = readl_relaxed(bank->base + alt_offset); + val &= ~GENMASK(alt_shift + 3, alt_shift); + val |= (alt << alt_shift); + writel_relaxed(val, bank->base + alt_offset); + + val = readl_relaxed(bank->base + STM32_GPIO_MODER); + val &= ~GENMASK(pin * 2 + 1, pin * 2); + val |= mode << (pin * 2); + writel_relaxed(val, bank->base + STM32_GPIO_MODER); + + spin_unlock_irqrestore(&bank->lock, flags); + clk_disable(bank->clk); +} + +static int stm32_pmx_set_mux(struct pinctrl_dev *pctldev, + unsigned function, + unsigned group) +{ + bool ret; + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + struct stm32_pinctrl_group *g = pctl->groups + group; + struct pinctrl_gpio_range *range; + struct stm32_gpio_bank *bank; + u32 mode, alt; + int pin; + + ret = stm32_pctrl_is_function_valid(pctl, g->pin, function); + if (!ret) { + dev_err(pctl->dev, "invalid function %d on group %d .\n", + function, group); + return -EINVAL; + } + + range = pinctrl_find_gpio_range_from_pin(pctldev, g->pin); + bank = gpio_range_to_bank(range); + pin = stm32_gpio_pin(g->pin); + + mode = stm32_gpio_get_mode(function); + alt = stm32_gpio_get_alt(function); + + stm32_pmx_set_mode(bank, pin, mode, alt); + + return 0; +} + +static int stm32_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, unsigned gpio, + bool input) +{ + struct stm32_gpio_bank *bank = gpio_range_to_bank(range); + int pin = stm32_gpio_pin(gpio); + + stm32_pmx_set_mode(bank, pin, !input, 0); + + return 0; +} + +static const struct pinmux_ops stm32_pmx_ops = { + .get_functions_count = stm32_pmx_get_funcs_cnt, + .get_function_name = stm32_pmx_get_func_name, + .get_function_groups = stm32_pmx_get_func_groups, + .set_mux = stm32_pmx_set_mux, + .gpio_set_direction = stm32_pmx_gpio_set_direction, +}; + +/* Pinconf functions */ + +static void stm32_pconf_set_driving(struct stm32_gpio_bank *bank, + unsigned offset, u32 drive) +{ + unsigned long flags; + u32 val; + + clk_enable(bank->clk); + spin_lock_irqsave(&bank->lock, flags); + + val = readl_relaxed(bank->base + STM32_GPIO_TYPER); + val &= ~BIT(offset); + val |= drive << offset; + writel_relaxed(val, bank->base + STM32_GPIO_TYPER); + + spin_unlock_irqrestore(&bank->lock, flags); + clk_disable(bank->clk); +} + +static void stm32_pconf_set_speed(struct stm32_gpio_bank *bank, + unsigned offset, u32 speed) +{ + unsigned long flags; + u32 val; + + clk_enable(bank->clk); + spin_lock_irqsave(&bank->lock, flags); + + val = readl_relaxed(bank->base + STM32_GPIO_SPEEDR); + val &= ~GENMASK(offset * 2 + 1, offset * 2); + val |= speed << (offset * 2); + writel_relaxed(val, bank->base + STM32_GPIO_SPEEDR); + + spin_unlock_irqrestore(&bank->lock, flags); + clk_disable(bank->clk); +} + +static void stm32_pconf_set_bias(struct stm32_gpio_bank *bank, + unsigned offset, u32 bias) +{ + unsigned long flags; + u32 val; + + clk_enable(bank->clk); + spin_lock_irqsave(&bank->lock, flags); + + val = readl_relaxed(bank->base + STM32_GPIO_PUPDR); + val &= ~GENMASK(offset * 2 + 1, offset * 2); + val |= bias << (offset * 2); + writel_relaxed(val, bank->base + STM32_GPIO_PUPDR); + + spin_unlock_irqrestore(&bank->lock, flags); + clk_disable(bank->clk); +} + +static int stm32_pconf_parse_conf(struct pinctrl_dev *pctldev, + unsigned int pin, enum pin_config_param param, + enum pin_config_param arg) +{ + struct pinctrl_gpio_range *range; + struct stm32_gpio_bank *bank; + int offset, ret = 0; + + range = pinctrl_find_gpio_range_from_pin(pctldev, pin); + bank = gpio_range_to_bank(range); + offset = stm32_gpio_pin(pin); + + switch (param) { + case PIN_CONFIG_DRIVE_PUSH_PULL: + stm32_pconf_set_driving(bank, offset, 0); + break; + case PIN_CONFIG_DRIVE_OPEN_DRAIN: + stm32_pconf_set_driving(bank, offset, 1); + break; + case PIN_CONFIG_SLEW_RATE: + stm32_pconf_set_speed(bank, offset, arg); + break; + case PIN_CONFIG_BIAS_DISABLE: + stm32_pconf_set_bias(bank, offset, 0); + break; + case PIN_CONFIG_BIAS_PULL_UP: + stm32_pconf_set_bias(bank, offset, 1); + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + stm32_pconf_set_bias(bank, offset, 2); + break; + case PIN_CONFIG_OUTPUT: + __stm32_gpio_set(bank, offset, arg); + ret = stm32_pmx_gpio_set_direction(pctldev, NULL, pin, false); + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static int stm32_pconf_group_get(struct pinctrl_dev *pctldev, + unsigned group, + unsigned long *config) +{ + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + + *config = pctl->groups[group].config; + + return 0; +} + +static int stm32_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group, + unsigned long *configs, unsigned num_configs) +{ + struct stm32_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); + struct stm32_pinctrl_group *g = &pctl->groups[group]; + int i, ret; + + for (i = 0; i < num_configs; i++) { + ret = stm32_pconf_parse_conf(pctldev, g->pin, + pinconf_to_config_param(configs[i]), + pinconf_to_config_argument(configs[i])); + if (ret < 0) + return ret; + + g->config = configs[i]; + } + + return 0; +} + +static const struct pinconf_ops stm32_pconf_ops = { + .pin_config_group_get = stm32_pconf_group_get, + .pin_config_group_set = stm32_pconf_group_set, +}; + +static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, + struct device_node *np) +{ + int bank_nr = pctl->nbanks; + struct stm32_gpio_bank *bank = &pctl->banks[bank_nr]; + struct pinctrl_gpio_range *range = &bank->range; + struct device *dev = pctl->dev; + struct resource res; + struct reset_control *rstc; + int err, npins; + + rstc = of_reset_control_get(np, NULL); + if (!IS_ERR(rstc)) + reset_control_deassert(rstc); + + if (of_address_to_resource(np, 0, &res)) + return -ENODEV; + + bank->base = devm_ioremap_resource(dev, &res); + if (IS_ERR(bank->base)) + return PTR_ERR(bank->base); + + bank->clk = of_clk_get_by_name(np, NULL); + if (IS_ERR(bank->clk)) { + dev_err(dev, "failed to get clk (%ld)\n", PTR_ERR(bank->clk)); + return PTR_ERR(bank->clk); + } + + err = clk_prepare(bank->clk); + if (err) { + dev_err(dev, "failed to prepare clk (%d)\n", err); + return err; + } + + npins = pctl->match_data->npins; + npins -= bank_nr * STM32_GPIO_PINS_PER_BANK; + if (npins < 0) + return -EINVAL; + else if (npins > STM32_GPIO_PINS_PER_BANK) + npins = STM32_GPIO_PINS_PER_BANK; + + bank->gpio_chip = stm32_gpio_template; + bank->gpio_chip.base = bank_nr * STM32_GPIO_PINS_PER_BANK; + bank->gpio_chip.ngpio = npins; + bank->gpio_chip.of_node = np; + bank->gpio_chip.parent = dev; + spin_lock_init(&bank->lock); + + of_property_read_string(np, "st,bank-name", &range->name); + bank->gpio_chip.label = range->name; + + range->id = bank_nr; + range->pin_base = range->base = range->id * STM32_GPIO_PINS_PER_BANK; + range->npins = bank->gpio_chip.ngpio; + range->gc = &bank->gpio_chip; + err = gpiochip_add_data(&bank->gpio_chip, bank); + if (err) { + dev_err(dev, "Failed to add gpiochip(%d)!\n", bank_nr); + return err; + } + + dev_info(dev, "%s bank added\n", range->name); + return 0; +} + +static int stm32_pctrl_build_state(struct platform_device *pdev) +{ + struct stm32_pinctrl *pctl = platform_get_drvdata(pdev); + int i; + + pctl->ngroups = pctl->match_data->npins; + + /* Allocate groups */ + pctl->groups = devm_kcalloc(&pdev->dev, pctl->ngroups, + sizeof(*pctl->groups), GFP_KERNEL); + if (!pctl->groups) + return -ENOMEM; + + /* We assume that one pin is one group, use pin name as group name. */ + pctl->grp_names = devm_kcalloc(&pdev->dev, pctl->ngroups, + sizeof(*pctl->grp_names), GFP_KERNEL); + if (!pctl->grp_names) + return -ENOMEM; + + for (i = 0; i < pctl->match_data->npins; i++) { + const struct stm32_desc_pin *pin = pctl->match_data->pins + i; + struct stm32_pinctrl_group *group = pctl->groups + i; + + group->name = pin->pin.name; + group->pin = pin->pin.number; + + pctl->grp_names[i] = pin->pin.name; + } + + return 0; +} + +int stm32_pctl_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct device_node *child; + const struct of_device_id *match; + struct device *dev = &pdev->dev; + struct stm32_pinctrl *pctl; + struct pinctrl_pin_desc *pins; + int i, ret, banks = 0; + + if (!np) + return -EINVAL; + + match = of_match_device(dev->driver->of_match_table, dev); + if (!match || !match->data) + return -EINVAL; + + if (!of_find_property(np, "pins-are-numbered", NULL)) { + dev_err(dev, "only support pins-are-numbered format\n"); + return -EINVAL; + } + + pctl = devm_kzalloc(dev, sizeof(*pctl), GFP_KERNEL); + if (!pctl) + return -ENOMEM; + + platform_set_drvdata(pdev, pctl); + + pctl->dev = dev; + pctl->match_data = match->data; + ret = stm32_pctrl_build_state(pdev); + if (ret) { + dev_err(dev, "build state failed: %d\n", ret); + return -EINVAL; + } + + for_each_child_of_node(np, child) + if (of_property_read_bool(child, "gpio-controller")) + banks++; + + if (!banks) { + dev_err(dev, "at least one GPIO bank is required\n"); + return -EINVAL; + } + + pctl->banks = devm_kcalloc(dev, banks, sizeof(*pctl->banks), + GFP_KERNEL); + if (!pctl->banks) + return -ENOMEM; + + for_each_child_of_node(np, child) { + if (of_property_read_bool(child, "gpio-controller")) { + ret = stm32_gpiolib_register_bank(pctl, child); + if (ret) + return ret; + + pctl->nbanks++; + } + } + + pins = devm_kcalloc(&pdev->dev, pctl->match_data->npins, sizeof(*pins), + GFP_KERNEL); + if (!pins) + return -ENOMEM; + + for (i = 0; i < pctl->match_data->npins; i++) + pins[i] = pctl->match_data->pins[i].pin; + + pctl->pctl_desc.name = dev_name(&pdev->dev); + pctl->pctl_desc.owner = THIS_MODULE; + pctl->pctl_desc.pins = pins; + pctl->pctl_desc.npins = pctl->match_data->npins; + pctl->pctl_desc.confops = &stm32_pconf_ops; + pctl->pctl_desc.pctlops = &stm32_pctrl_ops; + pctl->pctl_desc.pmxops = &stm32_pmx_ops; + pctl->dev = &pdev->dev; + + pctl->pctl_dev = pinctrl_register(&pctl->pctl_desc, &pdev->dev, pctl); + if (!pctl->pctl_dev) { + dev_err(&pdev->dev, "Failed pinctrl registration\n"); + return -EINVAL; + } + + for (i = 0; i < pctl->nbanks; i++) + pinctrl_add_gpio_range(pctl->pctl_dev, &pctl->banks[i].range); + + dev_info(dev, "Pinctrl STM32 initialized\n"); + + return 0; +} + |