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-rw-r--r--drivers/gpio/gpio-rcar.c63
-rw-r--r--drivers/gpio/gpio-samsung.c67
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", },
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 18:19:55 +0000