dm: gpio: exynos: Drop request()/free() in the driver

[karo-tx-uboot.git] / drivers / gpio / s5p_gpio.c

diff --git a/drivers/gpio/s5p_gpio.c b/drivers/gpio/s5p_gpio.c
index 13d74eb951bc406a6c3aea51f2548201c16ac258..6c41a42c177351adcd0d6f96ff81ae2a0f1036ee 100644 (file)
--- a/drivers/gpio/s5p_gpio.c
+++ b/drivers/gpio/s5p_gpio.c
@@ -33,8 +33,6 @@ DECLARE_GLOBAL_DATA_PTR;
 #define RATE_MASK(gpio)                (0x1 << (gpio + 16))
 #define RATE_SET(gpio)                 (0x1 << (gpio + 16))
 
-#define GPIO_NAME_SIZE                 20
-
 /* Platform data for each bank */
 struct exynos_gpio_platdata {
        struct s5p_gpio_bank *bank;
@@ -43,7 +41,6 @@ struct exynos_gpio_platdata {
 
 /* Information about each bank at run-time */
 struct exynos_bank_info {
-       char label[GPIO_PER_BANK][GPIO_NAME_SIZE];
        struct s5p_gpio_bank *bank;
 };
 
@@ -189,61 +186,10 @@ int s5p_gpio_get_pin(unsigned gpio)
 
 /* Driver model interface */
 #ifndef CONFIG_SPL_BUILD
-static int exynos_gpio_get_state(struct udevice *dev, unsigned int offset,
-                               char *buf, int bufsize)
-{
-       struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-       struct exynos_bank_info *state = dev_get_priv(dev);
-       const char *label;
-       bool is_output;
-       int size;
-       int cfg;
-
-       label = state->label[offset];
-       cfg = s5p_gpio_get_cfg_pin(state->bank, offset);
-       is_output = cfg == S5P_GPIO_OUTPUT;
-       size = snprintf(buf, bufsize, "%s%d: ",
-                       uc_priv->bank_name ? uc_priv->bank_name : "", offset);
-       buf += size;
-       bufsize -= size;
-       if (is_output || cfg == S5P_GPIO_INPUT) {
-               snprintf(buf, bufsize, "%s: %d [%c]%s%s",
-                        is_output ? "out" : " in",
-                        s5p_gpio_get_value(state->bank, offset),
-                        *label ? 'x' : ' ',
-                        *label ? " " : "",
-                        label);
-       } else {
-               snprintf(buf, bufsize, "sfpio");
-       }
-
-       return 0;
-}
-
-static int check_reserved(struct udevice *dev, unsigned offset,
-                         const char *func)
-{
-       struct exynos_bank_info *state = dev_get_priv(dev);
-       struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-
-       if (!*state->label[offset]) {
-               printf("exynos_gpio: %s: error: gpio %s%d not reserved\n",
-                      func, uc_priv->bank_name, offset);
-               return -EPERM;
-       }
-
-       return 0;
-}
-
 /* set GPIO pin 'gpio' as an input */
 static int exynos_gpio_direction_input(struct udevice *dev, unsigned offset)
 {
        struct exynos_bank_info *state = dev_get_priv(dev);
-       int ret;
-
-       ret = check_reserved(dev, offset, __func__);
-       if (ret)
-               return ret;
 
        /* Configure GPIO direction as input. */
        s5p_gpio_cfg_pin(state->bank, offset, S5P_GPIO_INPUT);
@@ -256,11 +202,6 @@ static int exynos_gpio_direction_output(struct udevice *dev, unsigned offset,
                                       int value)
 {
        struct exynos_bank_info *state = dev_get_priv(dev);
-       int ret;
-
-       ret = check_reserved(dev, offset, __func__);
-       if (ret)
-               return ret;
 
        /* Configure GPIO output value. */
        s5p_gpio_set_value(state->bank, offset, value);
@@ -275,11 +216,6 @@ static int exynos_gpio_direction_output(struct udevice *dev, unsigned offset,
 static int exynos_gpio_get_value(struct udevice *dev, unsigned offset)
 {
        struct exynos_bank_info *state = dev_get_priv(dev);
-       int ret;
-
-       ret = check_reserved(dev, offset, __func__);
-       if (ret)
-               return ret;
 
        return s5p_gpio_get_value(state->bank, offset);
 }
@@ -289,43 +225,11 @@ static int exynos_gpio_set_value(struct udevice *dev, unsigned offset,
                                 int value)
 {
        struct exynos_bank_info *state = dev_get_priv(dev);
-       int ret;
-
-       ret = check_reserved(dev, offset, __func__);
-       if (ret)
-               return ret;
 
        s5p_gpio_set_value(state->bank, offset, value);
 
        return 0;
 }
-
-static int exynos_gpio_request(struct udevice *dev, unsigned offset,
-                             const char *label)
-{
-       struct exynos_bank_info *state = dev_get_priv(dev);
-
-       if (*state->label[offset])
-               return -EBUSY;
-
-       strncpy(state->label[offset], label, GPIO_NAME_SIZE);
-       state->label[offset][GPIO_NAME_SIZE - 1] = '\0';
-
-       return 0;
-}
-
-static int exynos_gpio_free(struct udevice *dev, unsigned offset)
-{
-       struct exynos_bank_info *state = dev_get_priv(dev);
-       int ret;
-
-       ret = check_reserved(dev, offset, __func__);
-       if (ret)
-               return ret;
-       state->label[offset][0] = '\0';
-
-       return 0;
-}
 #endif /* nCONFIG_SPL_BUILD */
 
 /*
@@ -362,8 +266,6 @@ static int exynos_gpio_get_function(struct udevice *dev, unsigned offset)
        struct exynos_bank_info *state = dev_get_priv(dev);
        int cfg;
 
-       if (!*state->label[offset])
-               return GPIOF_UNUSED;
        cfg = s5p_gpio_get_cfg_pin(state->bank, offset);
        if (cfg == S5P_GPIO_OUTPUT)
                return GPIOF_OUTPUT;
@@ -374,14 +276,11 @@ static int exynos_gpio_get_function(struct udevice *dev, unsigned offset)
 }
 
 static const struct dm_gpio_ops gpio_exynos_ops = {
-       .request                = exynos_gpio_request,
-       .free                   = exynos_gpio_free,
        .direction_input        = exynos_gpio_direction_input,
        .direction_output       = exynos_gpio_direction_output,
        .get_value              = exynos_gpio_get_value,
        .set_value              = exynos_gpio_set_value,
        .get_function           = exynos_gpio_get_function,
-       .get_state              = exynos_gpio_get_state,
 };
 
 static int gpio_exynos_probe(struct udevice *dev)