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path: root/arch/sh/kernel/gpio.c
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Diffstat (limited to 'arch/sh/kernel/gpio.c')
-rw-r--r--arch/sh/kernel/gpio.c106
1 files changed, 53 insertions, 53 deletions
diff --git a/arch/sh/kernel/gpio.c b/arch/sh/kernel/gpio.c
index 28013567372..d22e5af699f 100644
--- a/arch/sh/kernel/gpio.c
+++ b/arch/sh/kernel/gpio.c
@@ -19,22 +19,6 @@
#include <linux/bitops.h>
#include <linux/gpio.h>
-static struct pinmux_info *registered_gpio;
-
-static struct pinmux_info *gpio_controller(unsigned gpio)
-{
- if (!registered_gpio)
- return NULL;
-
- if (gpio < registered_gpio->first_gpio)
- return NULL;
-
- if (gpio > registered_gpio->last_gpio)
- return NULL;
-
- return registered_gpio;
-}
-
static int enum_in_range(pinmux_enum_t enum_id, struct pinmux_range *r)
{
if (enum_id < r->begin)
@@ -398,9 +382,14 @@ static int pinmux_config_gpio(struct pinmux_info *gpioc, unsigned gpio,
static DEFINE_SPINLOCK(gpio_lock);
-int __gpio_request(unsigned gpio)
+static struct pinmux_info *chip_to_pinmux(struct gpio_chip *chip)
{
- struct pinmux_info *gpioc = gpio_controller(gpio);
+ return container_of(chip, struct pinmux_info, chip);
+}
+
+static int sh_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ struct pinmux_info *gpioc = chip_to_pinmux(chip);
struct pinmux_data_reg *dummy;
unsigned long flags;
int i, ret, pinmux_type;
@@ -412,30 +401,30 @@ int __gpio_request(unsigned gpio)
spin_lock_irqsave(&gpio_lock, flags);
- if ((gpioc->gpios[gpio].flags & PINMUX_FLAG_TYPE) != PINMUX_TYPE_NONE)
+ if ((gpioc->gpios[offset].flags & PINMUX_FLAG_TYPE) != PINMUX_TYPE_NONE)
goto err_unlock;
/* setup pin function here if no data is associated with pin */
- if (get_data_reg(gpioc, gpio, &dummy, &i) != 0)
+ if (get_data_reg(gpioc, offset, &dummy, &i) != 0)
pinmux_type = PINMUX_TYPE_FUNCTION;
else
pinmux_type = PINMUX_TYPE_GPIO;
if (pinmux_type == PINMUX_TYPE_FUNCTION) {
- if (pinmux_config_gpio(gpioc, gpio,
+ if (pinmux_config_gpio(gpioc, offset,
pinmux_type,
GPIO_CFG_DRYRUN) != 0)
goto err_unlock;
- if (pinmux_config_gpio(gpioc, gpio,
+ if (pinmux_config_gpio(gpioc, offset,
pinmux_type,
GPIO_CFG_REQ) != 0)
BUG();
}
- gpioc->gpios[gpio].flags &= ~PINMUX_FLAG_TYPE;
- gpioc->gpios[gpio].flags |= pinmux_type;
+ gpioc->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
+ gpioc->gpios[offset].flags |= pinmux_type;
ret = 0;
err_unlock:
@@ -443,11 +432,10 @@ int __gpio_request(unsigned gpio)
err_out:
return ret;
}
-EXPORT_SYMBOL(__gpio_request);
-void gpio_free(unsigned gpio)
+static void sh_gpio_free(struct gpio_chip *chip, unsigned offset)
{
- struct pinmux_info *gpioc = gpio_controller(gpio);
+ struct pinmux_info *gpioc = chip_to_pinmux(chip);
unsigned long flags;
int pinmux_type;
@@ -456,14 +444,13 @@ void gpio_free(unsigned gpio)
spin_lock_irqsave(&gpio_lock, flags);
- pinmux_type = gpioc->gpios[gpio].flags & PINMUX_FLAG_TYPE;
- pinmux_config_gpio(gpioc, gpio, pinmux_type, GPIO_CFG_FREE);
- gpioc->gpios[gpio].flags &= ~PINMUX_FLAG_TYPE;
- gpioc->gpios[gpio].flags |= PINMUX_TYPE_NONE;
+ pinmux_type = gpioc->gpios[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_config_gpio(gpioc, offset, pinmux_type, GPIO_CFG_FREE);
+ gpioc->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
+ gpioc->gpios[offset].flags |= PINMUX_TYPE_NONE;
spin_unlock_irqrestore(&gpio_lock, flags);
}
-EXPORT_SYMBOL(gpio_free);
static int pinmux_direction(struct pinmux_info *gpioc,
unsigned gpio, int new_pinmux_type)
@@ -507,21 +494,20 @@ static int pinmux_direction(struct pinmux_info *gpioc,
return ret;
}
-int gpio_direction_input(unsigned gpio)
+static int sh_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
- struct pinmux_info *gpioc = gpio_controller(gpio);
+ struct pinmux_info *gpioc = chip_to_pinmux(chip);
unsigned long flags;
int ret;
spin_lock_irqsave(&gpio_lock, flags);
- ret = pinmux_direction(gpioc, gpio, PINMUX_TYPE_INPUT);
+ ret = pinmux_direction(gpioc, offset, PINMUX_TYPE_INPUT);
spin_unlock_irqrestore(&gpio_lock, flags);
return ret;
}
-EXPORT_SYMBOL(gpio_direction_input);
-static void __gpio_set_value(struct pinmux_info *gpioc,
+static void sh_gpio_set_value(struct pinmux_info *gpioc,
unsigned gpio, int value)
{
struct pinmux_data_reg *dr = NULL;
@@ -533,22 +519,22 @@ static void __gpio_set_value(struct pinmux_info *gpioc,
gpio_write_bit(dr, bit, value);
}
-int gpio_direction_output(unsigned gpio, int value)
+static int sh_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+ int value)
{
- struct pinmux_info *gpioc = gpio_controller(gpio);
+ struct pinmux_info *gpioc = chip_to_pinmux(chip);
unsigned long flags;
int ret;
- __gpio_set_value(gpioc, gpio, value);
+ sh_gpio_set_value(gpioc, offset, value);
spin_lock_irqsave(&gpio_lock, flags);
- ret = pinmux_direction(gpioc, gpio, PINMUX_TYPE_OUTPUT);
+ ret = pinmux_direction(gpioc, offset, PINMUX_TYPE_OUTPUT);
spin_unlock_irqrestore(&gpio_lock, flags);
return ret;
}
-EXPORT_SYMBOL(gpio_direction_output);
-static int __gpio_get_value(struct pinmux_info *gpioc, unsigned gpio)
+static int sh_gpio_get_value(struct pinmux_info *gpioc, unsigned gpio)
{
struct pinmux_data_reg *dr = NULL;
int bit = 0;
@@ -561,24 +547,38 @@ static int __gpio_get_value(struct pinmux_info *gpioc, unsigned gpio)
return gpio_read_reg(dr->reg, dr->reg_width, 1, bit);
}
-int gpio_get_value(unsigned gpio)
+static int sh_gpio_get(struct gpio_chip *chip, unsigned offset)
{
- return __gpio_get_value(gpio_controller(gpio), gpio);
+ return sh_gpio_get_value(chip_to_pinmux(chip), offset);
}
-EXPORT_SYMBOL(gpio_get_value);
-void gpio_set_value(unsigned gpio, int value)
+static void sh_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
- __gpio_set_value(gpio_controller(gpio), gpio, value);
+ sh_gpio_set_value(chip_to_pinmux(chip), offset, value);
}
-EXPORT_SYMBOL(gpio_set_value);
int register_pinmux(struct pinmux_info *pip)
{
- registered_gpio = pip;
- setup_data_regs(pip);
- pr_info("pinmux: %s handling gpio %d -> %d\n",
+ struct gpio_chip *chip = &pip->chip;
+
+ pr_info("sh pinmux: %s handling gpio %d -> %d\n",
pip->name, pip->first_gpio, pip->last_gpio);
- return 0;
+ setup_data_regs(pip);
+
+ chip->request = sh_gpio_request;
+ chip->free = sh_gpio_free;
+ chip->direction_input = sh_gpio_direction_input;
+ chip->get = sh_gpio_get;
+ chip->direction_output = sh_gpio_direction_output;
+ chip->set = sh_gpio_set;
+
+ WARN_ON(pip->first_gpio != 0); /* needs testing */
+
+ chip->label = pip->name;
+ chip->owner = THIS_MODULE;
+ chip->base = pip->first_gpio;
+ chip->ngpio = (pip->last_gpio - pip->first_gpio) + 1;
+
+ return gpiochip_add(chip);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-28 23:12:05 +0000