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authorSimon Glass <sjg@chromium.org>2014-10-04 11:29:52 -0600
committerSimon Glass <sjg@chromium.org>2014-10-23 19:29:53 -0600
commit57d99d368e0eff624c5403b1f04d2548c5813598 (patch)
treef1dce51a8fc0e7f72dd47f24fcfeb638b5179e2f /drivers/gpio/tegra_gpio.c
parent4324174d0308c9c81ce246a8e82d2faaefb6d973 (diff)
dm: gpio: tegra: 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>
Diffstat (limited to 'drivers/gpio/tegra_gpio.c')
-rw-r--r--drivers/gpio/tegra_gpio.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/drivers/gpio/tegra_gpio.c b/drivers/gpio/tegra_gpio.c
index 70663fc4dec..88f7ef5bf04 100644
--- a/drivers/gpio/tegra_gpio.c
+++ b/drivers/gpio/tegra_gpio.c
@@ -39,7 +39,6 @@ struct tegra_gpio_platdata {
/* Information about each port at run-time */
struct tegra_port_info {
- char label[TEGRA_GPIOS_PER_PORT][GPIO_NAME_SIZE];
struct gpio_ctlr_bank *bank;
int base_gpio; /* Port number for this port (0, 1,.., n-1) */
};
@@ -132,21 +131,6 @@ static void set_level(unsigned gpio, int high)
writel(u, &bank->gpio_out[GPIO_PORT(gpio)]);
}
-static int check_reserved(struct udevice *dev, unsigned offset,
- const char *func)
-{
- struct tegra_port_info *state = dev_get_priv(dev);
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-
- if (!*state->label[offset]) {
- printf("tegra_gpio: %s: error: gpio %s%d not reserved\n",
- func, uc_priv->bank_name, offset);
- return -EBUSY;
- }
-
- return 0;
-}
-
/* set GPIO pin 'gpio' as an output, with polarity 'value' */
int tegra_spl_gpio_direction_output(int gpio, int value)
{
@@ -171,59 +155,16 @@ static int tegra_gpio_request(struct udevice *dev, unsigned offset,
{
struct tegra_port_info *state = dev_get_priv(dev);
- if (!label)
- return -EINVAL;
-
- if (*state->label[offset])
- return -EBUSY;
-
- strncpy(state->label[offset], label, GPIO_NAME_SIZE);
- state->label[offset][GPIO_NAME_SIZE - 1] = '\0';
-
/* Configure as a GPIO */
set_config(state->base_gpio + offset, 1);
return 0;
}
-static int tegra_gpio_free(struct udevice *dev, unsigned offset)
-{
- struct tegra_port_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;
-}
-
-/* read GPIO OUT value of pin 'gpio' */
-static int tegra_gpio_get_output_value(unsigned gpio)
-{
- struct gpio_ctlr *ctlr = (struct gpio_ctlr *)NV_PA_GPIO_BASE;
- struct gpio_ctlr_bank *bank = &ctlr->gpio_bank[GPIO_BANK(gpio)];
- int val;
-
- debug("gpio_get_output_value: pin = %d (port %d:bit %d)\n",
- gpio, GPIO_FULLPORT(gpio), GPIO_BIT(gpio));
-
- val = readl(&bank->gpio_out[GPIO_PORT(gpio)]);
-
- return (val >> GPIO_BIT(gpio)) & 1;
-}
-
-
/* set GPIO pin 'gpio' as an input */
static int tegra_gpio_direction_input(struct udevice *dev, unsigned offset)
{
struct tegra_port_info *state = dev_get_priv(dev);
- int ret;
-
- ret = check_reserved(dev, offset, __func__);
- if (ret)
- return ret;
/* Configure GPIO direction as input. */
set_direction(state->base_gpio + offset, 0);
@@ -237,11 +178,6 @@ static int tegra_gpio_direction_output(struct udevice *dev, unsigned offset,
{
struct tegra_port_info *state = dev_get_priv(dev);
int gpio = state->base_gpio + offset;
- int ret;
-
- ret = check_reserved(dev, offset, __func__);
- if (ret)
- return ret;
/* Configure GPIO output value. */
set_level(gpio, value);
@@ -257,13 +193,8 @@ static int tegra_gpio_get_value(struct udevice *dev, unsigned offset)
{
struct tegra_port_info *state = dev_get_priv(dev);
int gpio = state->base_gpio + offset;
- int ret;
int val;
- ret = check_reserved(dev, offset, __func__);
- if (ret)
- return ret;
-
debug("%s: pin = %d (port %d:bit %d)\n", __func__,
gpio, GPIO_FULLPORT(gpio), GPIO_BIT(gpio));
@@ -277,11 +208,6 @@ static int tegra_gpio_set_value(struct udevice *dev, unsigned offset, int value)
{
struct tegra_port_info *state = dev_get_priv(dev);
int gpio = state->base_gpio + offset;
- int ret;
-
- ret = check_reserved(dev, offset, __func__);
- if (ret)
- return ret;
debug("gpio_set_value: pin = %d (port %d:bit %d), value = %d\n",
gpio, GPIO_FULLPORT(gpio), GPIO_BIT(gpio), value);
@@ -317,8 +243,6 @@ static int tegra_gpio_get_function(struct udevice *dev, unsigned offset)
struct tegra_port_info *state = dev_get_priv(dev);
int gpio = state->base_gpio + offset;
- if (!*state->label[offset])
- return GPIOF_UNUSED;
if (!get_config(gpio))
return GPIOF_FUNC;
else if (get_direction(gpio))
@@ -327,50 +251,13 @@ static int tegra_gpio_get_function(struct udevice *dev, unsigned offset)
return GPIOF_INPUT;
}
-static int tegra_gpio_get_state(struct udevice *dev, unsigned int offset,
- char *buf, int bufsize)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
- struct tegra_port_info *state = dev_get_priv(dev);
- int gpio = state->base_gpio + offset;
- const char *label;
- int is_output;
- int is_gpio;
- int size;
-
- label = state->label[offset];
- is_gpio = get_config(gpio); /* GPIO, not SFPIO */
- size = snprintf(buf, bufsize, "%s%d: ",
- uc_priv->bank_name ? uc_priv->bank_name : "", offset);
- buf += size;
- bufsize -= size;
- if (is_gpio) {
- is_output = get_direction(gpio);
-
- snprintf(buf, bufsize, "%s: %d [%c]%s%s",
- is_output ? "out" : " in",
- is_output ?
- tegra_gpio_get_output_value(gpio) :
- tegra_gpio_get_value(dev, offset),
- *label ? 'x' : ' ',
- *label ? " " : "",
- label);
- } else {
- snprintf(buf, bufsize, "sfpio");
- }
-
- return 0;
-}
-
static const struct dm_gpio_ops gpio_tegra_ops = {
.request = tegra_gpio_request,
- .free = tegra_gpio_free,
.direction_input = tegra_gpio_direction_input,
.direction_output = tegra_gpio_direction_output,
.get_value = tegra_gpio_get_value,
.set_value = tegra_gpio_set_value,
.get_function = tegra_gpio_get_function,
- .get_state = tegra_gpio_get_state,
};
/**