diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 63 | ||||
| -rw-r--r-- | drivers/gpio/gpio-samsung.c | 67 |
2 files changed, 57 insertions, 73 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index d173d56dbb8c..6ec82f76f019 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -51,6 +51,8 @@ struct gpio_rcar_priv { #define FILONOFF 0x28 #define BOTHEDGE 0x4c +#define RCAR_MAX_GPIO_PER_BANK 32 + static inline u32 gpio_rcar_read(struct gpio_rcar_priv *p, int offs) { return ioread32(p->base + offs); @@ -274,9 +276,35 @@ static struct irq_domain_ops gpio_rcar_irq_domain_ops = { .map = gpio_rcar_irq_domain_map, }; +static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) +{ + struct gpio_rcar_config *pdata = p->pdev->dev.platform_data; + struct device_node *np = p->pdev->dev.of_node; + struct of_phandle_args args; + int ret; + + if (pdata) { + p->config = *pdata; + } else if (IS_ENABLED(CONFIG_OF) && np) { + ret = of_parse_phandle_with_args(np, "gpio-ranges", + "#gpio-range-cells", 0, &args); + p->config.number_of_pins = ret == 0 && args.args_count == 3 + ? args.args[2] + : RCAR_MAX_GPIO_PER_BANK; + p->config.gpio_base = -1; + } + + if (p->config.number_of_pins == 0 || + p->config.number_of_pins > RCAR_MAX_GPIO_PER_BANK) { + dev_warn(&p->pdev->dev, + "Invalid number of gpio lines %u, using %u\n", + p->config.number_of_pins, RCAR_MAX_GPIO_PER_BANK); + p->config.number_of_pins = RCAR_MAX_GPIO_PER_BANK; + } +} + static int gpio_rcar_probe(struct platform_device *pdev) { - struct gpio_rcar_config *pdata = pdev->dev.platform_data; struct gpio_rcar_priv *p; struct resource *io, *irq; struct gpio_chip *gpio_chip; @@ -291,14 +319,14 @@ static int gpio_rcar_probe(struct platform_device *pdev) goto err0; } - /* deal with driver instance configuration */ - if (pdata) - p->config = *pdata; - p->pdev = pdev; - platform_set_drvdata(pdev, p); spin_lock_init(&p->lock); + /* Get device configuration from DT node or platform data. */ + gpio_rcar_parse_pdata(p); + + platform_set_drvdata(pdev, p); + io = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); @@ -325,6 +353,7 @@ static int gpio_rcar_probe(struct platform_device *pdev) gpio_chip->set = gpio_rcar_set; gpio_chip->to_irq = gpio_rcar_to_irq; gpio_chip->label = name; + gpio_chip->dev = &pdev->dev; gpio_chip->owner = THIS_MODULE; gpio_chip->base = p->config.gpio_base; gpio_chip->ngpio = p->config.number_of_pins; @@ -371,10 +400,12 @@ static int gpio_rcar_probe(struct platform_device *pdev) p->config.irq_base, ret); } - ret = gpiochip_add_pin_range(gpio_chip, p->config.pctl_name, 0, - gpio_chip->base, gpio_chip->ngpio); - if (ret < 0) - dev_warn(&pdev->dev, "failed to add pin range\n"); + if (p->config.pctl_name) { + ret = gpiochip_add_pin_range(gpio_chip, p->config.pctl_name, 0, + gpio_chip->base, gpio_chip->ngpio); + if (ret < 0) + dev_warn(&pdev->dev, "failed to add pin range\n"); + } return 0; @@ -397,11 +428,23 @@ static int gpio_rcar_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id gpio_rcar_of_table[] = { + { + .compatible = "renesas,gpio-rcar", + }, + { }, +}; + +MODULE_DEVICE_TABLE(of, gpio_rcar_of_table); +#endif + static struct platform_driver gpio_rcar_device_driver = { .probe = gpio_rcar_probe, .remove = gpio_rcar_remove, .driver = { .name = "gpio_rcar", + .of_match_table = of_match_ptr(gpio_rcar_of_table), } }; diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index b22ca7933745..a1392f47bbda 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -933,67 +933,6 @@ static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip) s3c_gpiolib_track(chip); } -#if defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF) -static int s3c24xx_gpio_xlate(struct gpio_chip *gc, - const struct of_phandle_args *gpiospec, u32 *flags) -{ - unsigned int pin; - - if (WARN_ON(gc->of_gpio_n_cells < 3)) - return -EINVAL; - - if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells)) - return -EINVAL; - - if (gpiospec->args[0] > gc->ngpio) - return -EINVAL; - - pin = gc->base + gpiospec->args[0]; - - if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1]))) - pr_warn("gpio_xlate: failed to set pin function\n"); - if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff)) - pr_warn("gpio_xlate: failed to set pin pull up/down\n"); - - if (flags) - *flags = gpiospec->args[2] >> 16; - - return gpiospec->args[0]; -} - -static const struct of_device_id s3c24xx_gpio_dt_match[] __initdata = { - { .compatible = "samsung,s3c24xx-gpio", }, - {} -}; - -static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip, - u64 base, u64 offset) -{ - struct gpio_chip *gc = &chip->chip; - u64 address; - - if (!of_have_populated_dt()) - return; - - address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset; - gc->of_node = of_find_matching_node_by_address(NULL, - s3c24xx_gpio_dt_match, address); - if (!gc->of_node) { - pr_info("gpio: device tree node not found for gpio controller" - " with base address %08llx\n", address); - return; - } - gc->of_gpio_n_cells = 3; - gc->of_xlate = s3c24xx_gpio_xlate; -} -#else -static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip, - u64 base, u64 offset) -{ - return; -} -#endif /* defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF) */ - static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip, int nr_chips, void __iomem *base) { @@ -1018,8 +957,6 @@ static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip, gc->direction_output = samsung_gpiolib_2bit_output; samsung_gpiolib_add(chip); - - s3c24xx_gpiolib_attach_ofnode(chip, S3C24XX_PA_GPIO, i * 0x10); } } @@ -3026,6 +2963,10 @@ static __init int samsung_gpiolib_init(void) */ struct device_node *pctrl_np; static const struct of_device_id exynos_pinctrl_ids[] = { + { .compatible = "samsung,s3c2412-pinctrl", }, + { .compatible = "samsung,s3c2416-pinctrl", }, + { .compatible = "samsung,s3c2440-pinctrl", }, + { .compatible = "samsung,s3c2450-pinctrl", }, { .compatible = "samsung,exynos4210-pinctrl", }, { .compatible = "samsung,exynos4x12-pinctrl", }, { .compatible = "samsung,exynos5250-pinctrl", }, |