Commit 2c341d62 authored by Grygorii Strashko's avatar Grygorii Strashko Committed by Linus Walleij

gpio: syscon: add soc specific callback to assign output value

Some SoCs (like Keystone) may require to perform special
sequence of operations to assign output GPIO value, so default
implementation of .set() callback from gpio-syscon driver
can't be used.

Hence, add optional, SoC specific callback to assign output
gpio value.
Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 3af0dbd5
...@@ -37,6 +37,8 @@ ...@@ -37,6 +37,8 @@
* dat_bit_offset: Offset (in bits) to the first GPIO bit. * dat_bit_offset: Offset (in bits) to the first GPIO bit.
* dir_bit_offset: Optional offset (in bits) to the first bit to switch * dir_bit_offset: Optional offset (in bits) to the first bit to switch
* GPIO direction (Used with GPIO_SYSCON_FEAT_DIR flag). * GPIO direction (Used with GPIO_SYSCON_FEAT_DIR flag).
* set: HW specific callback to assigns output value
* for signal "offset"
*/ */
struct syscon_gpio_data { struct syscon_gpio_data {
...@@ -45,6 +47,8 @@ struct syscon_gpio_data { ...@@ -45,6 +47,8 @@ struct syscon_gpio_data {
unsigned int bit_count; unsigned int bit_count;
unsigned int dat_bit_offset; unsigned int dat_bit_offset;
unsigned int dir_bit_offset; unsigned int dir_bit_offset;
void (*set)(struct gpio_chip *chip,
unsigned offset, int value);
}; };
struct syscon_gpio_priv { struct syscon_gpio_priv {
...@@ -111,7 +115,7 @@ static int syscon_gpio_dir_out(struct gpio_chip *chip, unsigned offset, int val) ...@@ -111,7 +115,7 @@ static int syscon_gpio_dir_out(struct gpio_chip *chip, unsigned offset, int val)
BIT(offs % SYSCON_REG_BITS)); BIT(offs % SYSCON_REG_BITS));
} }
syscon_gpio_set(chip, offset, val); priv->data->set(chip, offset, val);
return 0; return 0;
} }
...@@ -159,7 +163,7 @@ static int syscon_gpio_probe(struct platform_device *pdev) ...@@ -159,7 +163,7 @@ static int syscon_gpio_probe(struct platform_device *pdev)
if (priv->data->flags & GPIO_SYSCON_FEAT_IN) if (priv->data->flags & GPIO_SYSCON_FEAT_IN)
priv->chip.direction_input = syscon_gpio_dir_in; priv->chip.direction_input = syscon_gpio_dir_in;
if (priv->data->flags & GPIO_SYSCON_FEAT_OUT) { if (priv->data->flags & GPIO_SYSCON_FEAT_OUT) {
priv->chip.set = syscon_gpio_set; priv->chip.set = priv->data->set ? : syscon_gpio_set;
priv->chip.direction_output = syscon_gpio_dir_out; priv->chip.direction_output = syscon_gpio_dir_out;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment