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path: root/drivers/gpio/mxc_gpio.c
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Diffstat (limited to 'drivers/gpio/mxc_gpio.c')
-rw-r--r--drivers/gpio/mxc_gpio.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 3f7b7d2..8bb9e39 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -20,7 +20,6 @@ enum mxc_gpio_direction {
MXC_GPIO_DIRECTION_OUT,
};
-#define GPIO_NAME_SIZE 20
#define GPIO_PER_BANK 32
struct mxc_gpio_plat {
@@ -28,7 +27,6 @@ struct mxc_gpio_plat {
};
struct mxc_bank_info {
- char label[GPIO_PER_BANK][GPIO_NAME_SIZE];
struct gpio_regs *regs;
};
@@ -152,18 +150,6 @@ int gpio_direction_output(unsigned gpio, int value)
#endif
#ifdef CONFIG_DM_GPIO
-/**
- * gpio_is_requested() - check if a GPIO has been requested
- *
- * @bank: Bank to check
- * @offset: GPIO offset within bank to check
- * @return true if marked as requested, false if not
- */
-static inline bool gpio_is_requested(struct mxc_bank_info *bank, int offset)
-{
- return *bank->label[offset] != '\0';
-}
-
static int mxc_gpio_is_output(struct gpio_regs *regs, int offset)
{
u32 val;
@@ -208,35 +194,10 @@ static int mxc_gpio_bank_get_value(struct gpio_regs *regs, int offset)
return (readl(&regs->gpio_psr) >> offset) & 0x01;
}
-static int mxc_gpio_bank_get_output_value(struct gpio_regs *regs, int offset)
-{
- return (readl(&regs->gpio_dr) >> offset) & 0x01;
-}
-
-static int check_requested(struct udevice *dev, unsigned offset,
- const char *func)
-{
- struct mxc_bank_info *bank = dev_get_priv(dev);
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-
- if (!gpio_is_requested(bank, offset)) {
- printf("mxc_gpio: %s: error: gpio %s%d not requested\n",
- func, uc_priv->bank_name, offset);
- return -EPERM;
- }
-
- return 0;
-}
-
/* set GPIO pin 'gpio' as an input */
static int mxc_gpio_direction_input(struct udevice *dev, unsigned offset)
{
struct mxc_bank_info *bank = dev_get_priv(dev);
- int ret;
-
- ret = check_requested(dev, offset, __func__);
- if (ret)
- return ret;
/* Configure GPIO direction as input. */
mxc_gpio_bank_direction(bank->regs, offset, MXC_GPIO_DIRECTION_IN);
@@ -249,11 +210,6 @@ static int mxc_gpio_direction_output(struct udevice *dev, unsigned offset,
int value)
{
struct mxc_bank_info *bank = dev_get_priv(dev);
- int ret;
-
- ret = check_requested(dev, offset, __func__);
- if (ret)
- return ret;
/* Configure GPIO output value. */
mxc_gpio_bank_set_value(bank->regs, offset, value);
@@ -268,11 +224,6 @@ static int mxc_gpio_direction_output(struct udevice *dev, unsigned offset,
static int mxc_gpio_get_value(struct udevice *dev, unsigned offset)
{
struct mxc_bank_info *bank = dev_get_priv(dev);
- int ret;
-
- ret = check_requested(dev, offset, __func__);
- if (ret)
- return ret;
return mxc_gpio_bank_get_value(bank->regs, offset);
}
@@ -282,80 +233,16 @@ static int mxc_gpio_set_value(struct udevice *dev, unsigned offset,
int value)
{
struct mxc_bank_info *bank = dev_get_priv(dev);
- int ret;
-
- ret = check_requested(dev, offset, __func__);
- if (ret)
- return ret;
mxc_gpio_bank_set_value(bank->regs, offset, value);
return 0;
}
-static int mxc_gpio_get_state(struct udevice *dev, unsigned int offset,
- char *buf, int bufsize)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
- struct mxc_bank_info *bank = dev_get_priv(dev);
- const char *label;
- bool requested;
- bool is_output;
- int size;
-
- label = bank->label[offset];
- is_output = mxc_gpio_is_output(bank->regs, offset);
- size = snprintf(buf, bufsize, "%s%d: ",
- uc_priv->bank_name ? uc_priv->bank_name : "", offset);
- buf += size;
- bufsize -= size;
- requested = gpio_is_requested(bank, offset);
- snprintf(buf, bufsize, "%s: %d [%c]%s%s",
- is_output ? "out" : " in",
- is_output ?
- mxc_gpio_bank_get_output_value(bank->regs, offset) :
- mxc_gpio_bank_get_value(bank->regs, offset),
- requested ? 'x' : ' ',
- requested ? " " : "",
- label);
-
- return 0;
-}
-
-static int mxc_gpio_request(struct udevice *dev, unsigned offset,
- const char *label)
-{
- struct mxc_bank_info *bank = dev_get_priv(dev);
-
- if (gpio_is_requested(bank, offset))
- return -EBUSY;
-
- strncpy(bank->label[offset], label, GPIO_NAME_SIZE);
- bank->label[offset][GPIO_NAME_SIZE - 1] = '\0';
-
- return 0;
-}
-
-static int mxc_gpio_free(struct udevice *dev, unsigned offset)
-{
- struct mxc_bank_info *bank = dev_get_priv(dev);
- int ret;
-
- ret = check_requested(dev, offset, __func__);
- if (ret)
- return ret;
- bank->label[offset][0] = '\0';
-
- return 0;
-}
-
static int mxc_gpio_get_function(struct udevice *dev, unsigned offset)
{
struct mxc_bank_info *bank = dev_get_priv(dev);
- if (!gpio_is_requested(bank, offset))
- return GPIOF_UNUSED;
-
/* GPIOF_FUNC is not implemented yet */
if (mxc_gpio_is_output(bank->regs, offset))
return GPIOF_OUTPUT;
@@ -364,14 +251,11 @@ static int mxc_gpio_get_function(struct udevice *dev, unsigned offset)
}
static const struct dm_gpio_ops gpio_mxc_ops = {
- .request = mxc_gpio_request,
- .free = mxc_gpio_free,
.direction_input = mxc_gpio_direction_input,
.direction_output = mxc_gpio_direction_output,
.get_value = mxc_gpio_get_value,
.set_value = mxc_gpio_set_value,
.get_function = mxc_gpio_get_function,
- .get_state = mxc_gpio_get_state,
};
static const struct mxc_gpio_plat mxc_plat[] = {