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authorSimon Glass <sjg@chromium.org>2014-10-04 11:29:54 -0600
committerSimon Glass <sjg@chromium.org>2014-10-23 19:30:51 -0600
commit3dd2d480558f45152a5d2ab5590c657055f1a756 (patch)
treea259e1d49ec64153a232cc36bb52e117fdea8f91 /drivers
parent5aff3acdb75bf075a746783eace341300191a061 (diff)
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dm: gpio: rpi_b: 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')
-rw-r--r--drivers/gpio/bcm2835_gpio.c89
1 files changed, 0 insertions, 89 deletions
diff --git a/drivers/gpio/bcm2835_gpio.c b/drivers/gpio/bcm2835_gpio.c
index 332cfc2..0244c01 100644
--- a/drivers/gpio/bcm2835_gpio.c
+++ b/drivers/gpio/bcm2835_gpio.c
@@ -11,67 +11,10 @@
#include <asm/gpio.h>
#include <asm/io.h>
-#define GPIO_NAME_SIZE 20
-
struct bcm2835_gpios {
- char label[BCM2835_GPIO_COUNT][GPIO_NAME_SIZE];
struct bcm2835_gpio_regs *reg;
};
-/**
- * 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 bcm2835_gpios *gpios, int offset)
-{
- return *gpios->label[offset] != '\0';
-}
-
-static int check_requested(struct udevice *dev, unsigned offset,
- const char *func)
-{
- struct bcm2835_gpios *gpios = dev_get_priv(dev);
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-
- if (!gpio_is_requested(gpios, offset)) {
- printf("omap_gpio: %s: error: gpio %s%d not requested\n",
- func, uc_priv->bank_name, offset);
- return -EPERM;
- }
-
- return 0;
-}
-
-static int bcm2835_gpio_request(struct udevice *dev, unsigned offset,
- const char *label)
-{
- struct bcm2835_gpios *gpios = dev_get_priv(dev);
-
- if (gpio_is_requested(gpios, offset))
- return -EBUSY;
-
- strncpy(gpios->label[offset], label, GPIO_NAME_SIZE);
- gpios->label[offset][GPIO_NAME_SIZE - 1] = '\0';
-
- return 0;
-}
-
-static int bcm2835_gpio_free(struct udevice *dev, unsigned offset)
-{
- struct bcm2835_gpios *gpios = dev_get_priv(dev);
- int ret;
-
- ret = check_requested(dev, offset, __func__);
- if (ret)
- return ret;
- gpios->label[offset][0] = '\0';
-
- return 0;
-}
-
static int bcm2835_gpio_direction_input(struct udevice *dev, unsigned gpio)
{
struct bcm2835_gpios *gpios = dev_get_priv(dev);
@@ -142,9 +85,6 @@ static int bcm2835_gpio_get_function(struct udevice *dev, unsigned offset)
{
struct bcm2835_gpios *gpios = dev_get_priv(dev);
- if (!gpio_is_requested(gpios, offset))
- return GPIOF_UNUSED;
-
/* GPIOF_FUNC is not implemented yet */
if (bcm2835_gpio_is_output(gpios, offset))
return GPIOF_OUTPUT;
@@ -152,42 +92,13 @@ static int bcm2835_gpio_get_function(struct udevice *dev, unsigned offset)
return GPIOF_INPUT;
}
-static int bcm2835_gpio_get_state(struct udevice *dev, unsigned int offset,
- char *buf, int bufsize)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
- struct bcm2835_gpios *gpios = dev_get_priv(dev);
- const char *label;
- bool requested;
- bool is_output;
- int size;
-
- label = gpios->label[offset];
- is_output = bcm2835_gpio_is_output(gpios, offset);
- size = snprintf(buf, bufsize, "%s%d: ",
- uc_priv->bank_name ? uc_priv->bank_name : "", offset);
- buf += size;
- bufsize -= size;
- requested = gpio_is_requested(gpios, offset);
- snprintf(buf, bufsize, "%s: %d [%c]%s%s",
- is_output ? "out" : " in",
- bcm2835_get_value(gpios, offset),
- requested ? 'x' : ' ',
- requested ? " " : "",
- label);
-
- return 0;
-}
static const struct dm_gpio_ops gpio_bcm2835_ops = {
- .request = bcm2835_gpio_request,
- .free = bcm2835_gpio_free,
.direction_input = bcm2835_gpio_direction_input,
.direction_output = bcm2835_gpio_direction_output,
.get_value = bcm2835_gpio_get_value,
.set_value = bcm2835_gpio_set_value,
.get_function = bcm2835_gpio_get_function,
- .get_state = bcm2835_gpio_get_state,
};
static int bcm2835_gpio_probe(struct udevice *dev)