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

Now that the uclass supports gpio_request/free() there is no need for the
driver to implement it too. Drop this unnecessary code.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c
index 13b3253..53c80d5 100644 (file)
--- a/drivers/gpio/sandbox.c
+++ b/drivers/gpio/sandbox.c
@@ -14,7 +14,6 @@ DECLARE_GLOBAL_DATA_PTR;
 /* Flags for each GPIO */
 #define GPIOF_OUTPUT   (1 << 0)        /* Currently set as an output */
 #define GPIOF_HIGH     (1 << 1)        /* Currently set high */
-#define GPIOF_RESERVED (1 << 2)        /* Is in use / requested */
 
 struct gpio_state {
        const char *label;      /* label given by requester */
@@ -54,18 +53,6 @@ static int set_gpio_flag(struct udevice *dev, unsigned offset, int flag,
        return 0;
 }
 
-static int check_reserved(struct udevice *dev, unsigned offset,
-                         const char *func)
-{
-       if (!get_gpio_flag(dev, offset, GPIOF_RESERVED)) {
-               printf("sandbox_gpio: %s: error: offset %u not reserved\n",
-                      func, offset);
-               return -1;
-       }
-
-       return 0;
-}
-
 /*
  * Back-channel sandbox-internal-only access to GPIO state
  */
@@ -101,9 +88,6 @@ static int sb_gpio_direction_input(struct udevice *dev, unsigned offset)
 {
        debug("%s: offset:%u\n", __func__, offset);
 
-       if (check_reserved(dev, offset, __func__))
-               return -1;
-
        return sandbox_gpio_set_direction(dev, offset, 0);
 }
 
@@ -113,9 +97,6 @@ static int sb_gpio_direction_output(struct udevice *dev, unsigned offset,
 {
        debug("%s: offset:%u, value = %d\n", __func__, offset, value);
 
-       if (check_reserved(dev, offset, __func__))
-               return -1;
-
        return sandbox_gpio_set_direction(dev, offset, 1) |
                sandbox_gpio_set_value(dev, offset, value);
 }
@@ -125,9 +106,6 @@ static int sb_gpio_get_value(struct udevice *dev, unsigned offset)
 {
        debug("%s: offset:%u\n", __func__, offset);
 
-       if (check_reserved(dev, offset, __func__))
-               return -1;
-
        return sandbox_gpio_get_value(dev, offset);
 }
 
@@ -136,9 +114,6 @@ static int sb_gpio_set_value(struct udevice *dev, unsigned offset, int value)
 {
        debug("%s: offset:%u, value = %d\n", __func__, offset, value);
 
-       if (check_reserved(dev, offset, __func__))
-               return -1;
-
        if (!sandbox_gpio_get_direction(dev, offset)) {
                printf("sandbox_gpio: error: set_value on input gpio %u\n",
                       offset);
@@ -148,61 +123,6 @@ static int sb_gpio_set_value(struct udevice *dev, unsigned offset, int value)
        return sandbox_gpio_set_value(dev, offset, value);
 }
 
-static int sb_gpio_request(struct udevice *dev, unsigned offset,
-                          const char *label)
-{
-       struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-       struct gpio_state *state = dev_get_priv(dev);
-
-       debug("%s: offset:%u, label:%s\n", __func__, offset, label);
-
-       if (offset >= uc_priv->gpio_count) {
-               printf("sandbox_gpio: error: invalid gpio %u\n", offset);
-               return -1;
-       }
-
-       if (get_gpio_flag(dev, offset, GPIOF_RESERVED)) {
-               printf("sandbox_gpio: error: gpio %u already reserved\n",
-                      offset);
-               return -1;
-       }
-
-       state[offset].label = label;
-       return set_gpio_flag(dev, offset, GPIOF_RESERVED, 1);
-}
-
-static int sb_gpio_free(struct udevice *dev, unsigned offset)
-{
-       struct gpio_state *state = dev_get_priv(dev);
-
-       debug("%s: offset:%u\n", __func__, offset);
-
-       if (check_reserved(dev, offset, __func__))
-               return -1;
-
-       state[offset].label = NULL;
-       return set_gpio_flag(dev, offset, GPIOF_RESERVED, 0);
-}
-
-static int sb_gpio_get_state(struct udevice *dev, unsigned int offset,
-                            char *buf, int bufsize)
-{
-       struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-       struct gpio_state *state = dev_get_priv(dev);
-       const char *label;
-
-       label = state[offset].label;
-       snprintf(buf, bufsize, "%s%d: %s: %d [%c]%s%s",
-                uc_priv->bank_name ? uc_priv->bank_name : "", offset,
-                sandbox_gpio_get_direction(dev, offset) ? "out" : " in",
-                sandbox_gpio_get_value(dev, offset),
-                get_gpio_flag(dev, offset, GPIOF_RESERVED) ? 'x' : ' ',
-                label ? " " : "",
-                label ? label : "");
-
-       return 0;
-}
-
 static int sb_gpio_get_function(struct udevice *dev, unsigned offset)
 {
        if (get_gpio_flag(dev, offset, GPIOF_OUTPUT))
@@ -211,8 +131,6 @@ static int sb_gpio_get_function(struct udevice *dev, unsigned offset)
 }
 
 static const struct dm_gpio_ops gpio_sandbox_ops = {
-       .request                = sb_gpio_request,
-       .free                   = sb_gpio_free,
        .direction_input        = sb_gpio_direction_input,
        .direction_output       = sb_gpio_direction_output,
        .get_value              = sb_gpio_get_value,