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gpio: bd7xxxx: Do not depend on parent driver data

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The ROHM BD70528 and BD71828 GPIO drivers only need the regmap
pointer from parent. Regmap can be obtained via dev_get_regmap()
so do not require parent to populate driver data for that.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Matti Vaittinen 2021-01-05 14:53:35 +02:00 committed by Bartosz Golaszewski
parent 032653ef1b
commit 82bf0afd57
2 changed files with 33 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/gpio/gpio-bd70528.c
View File

@ -12,7 +12,8 @@
#define GPIO_OUT_REG(offset) (BD70528_REG_GPIO1_OUT + (offset) * 2)
struct bd70528_gpio {
struct rohm_regmap_dev chip;
struct regmap *regmap;
struct device *dev;
struct gpio_chip gpio;
};
@ -35,11 +36,11 @@ static int bd70528_set_debounce(struct bd70528_gpio *bdgpio,
val = BD70528_DEBOUNCE_50MS;
break;
default:
dev_err(bdgpio->chip.dev,
dev_err(bdgpio->dev,
"Invalid debounce value %u\n", debounce);
return -EINVAL;
}
return regmap_update_bits(bdgpio->chip.regmap, GPIO_IN_REG(offset),
return regmap_update_bits(bdgpio->regmap, GPIO_IN_REG(offset),
BD70528_DEBOUNCE_MASK, val);
}
@ -49,9 +50,9 @@ static int bd70528_get_direction(struct gpio_chip *chip, unsigned int offset)
int val, ret;
/* Do we need to do something to IRQs here? */
ret = regmap_read(bdgpio->chip.regmap, GPIO_OUT_REG(offset), &val);
ret = regmap_read(bdgpio->regmap, GPIO_OUT_REG(offset), &val);
if (ret) {
dev_err(bdgpio->chip.dev, "Could not read gpio direction\n");
dev_err(bdgpio->dev, "Could not read gpio direction\n");
return ret;
}
if (val & BD70528_GPIO_OUT_EN_MASK)
@ -67,13 +68,13 @@ static int bd70528_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
switch (pinconf_to_config_param(config)) {
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
return regmap_update_bits(bdgpio->chip.regmap,
return regmap_update_bits(bdgpio->regmap,
GPIO_OUT_REG(offset),
BD70528_GPIO_DRIVE_MASK,
BD70528_GPIO_OPEN_DRAIN);
break;
case PIN_CONFIG_DRIVE_PUSH_PULL:
return regmap_update_bits(bdgpio->chip.regmap,
return regmap_update_bits(bdgpio->regmap,
GPIO_OUT_REG(offset),
BD70528_GPIO_DRIVE_MASK,
BD70528_GPIO_PUSH_PULL);
@ -93,7 +94,7 @@ static int bd70528_direction_input(struct gpio_chip *chip, unsigned int offset)
struct bd70528_gpio *bdgpio = gpiochip_get_data(chip);
/* Do we need to do something to IRQs here? */
return regmap_update_bits(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
return regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset),
BD70528_GPIO_OUT_EN_MASK,
BD70528_GPIO_OUT_DISABLE);
}
@ -105,10 +106,10 @@ static void bd70528_gpio_set(struct gpio_chip *chip, unsigned int offset,
struct bd70528_gpio *bdgpio = gpiochip_get_data(chip);
u8 val = (value) ? BD70528_GPIO_OUT_HI : BD70528_GPIO_OUT_LO;
ret = regmap_update_bits(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
ret = regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset),
BD70528_GPIO_OUT_MASK, val);
if (ret)
dev_err(bdgpio->chip.dev, "Could not set gpio to %d\n", value);
dev_err(bdgpio->dev, "Could not set gpio to %d\n", value);
}
static int bd70528_direction_output(struct gpio_chip *chip, unsigned int offset,
@ -117,7 +118,7 @@ static int bd70528_direction_output(struct gpio_chip *chip, unsigned int offset,
struct bd70528_gpio *bdgpio = gpiochip_get_data(chip);
bd70528_gpio_set(chip, offset, value);
return regmap_update_bits(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
return regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset),
BD70528_GPIO_OUT_EN_MASK,
BD70528_GPIO_OUT_ENABLE);
}
@ -129,11 +130,11 @@ static int bd70528_gpio_get_o(struct bd70528_gpio *bdgpio, unsigned int offset)
int ret;
unsigned int val;
ret = regmap_read(bdgpio->chip.regmap, GPIO_OUT_REG(offset), &val);
ret = regmap_read(bdgpio->regmap, GPIO_OUT_REG(offset), &val);
if (!ret)
ret = !!(val & BD70528_GPIO_OUT_MASK);
else
dev_err(bdgpio->chip.dev, "GPIO (out) state read failed\n");
dev_err(bdgpio->dev, "GPIO (out) state read failed\n");
return ret;
}
@ -143,12 +144,12 @@ static int bd70528_gpio_get_i(struct bd70528_gpio *bdgpio, unsigned int offset)
unsigned int val;
int ret;
ret = regmap_read(bdgpio->chip.regmap, BD70528_REG_GPIO_STATE, &val);
ret = regmap_read(bdgpio->regmap, BD70528_REG_GPIO_STATE, &val);
if (!ret)
ret = !(val & GPIO_IN_STATE_MASK(offset));
else
dev_err(bdgpio->chip.dev, "GPIO (in) state read failed\n");
dev_err(bdgpio->dev, "GPIO (in) state read failed\n");
return ret;
}
@ -173,7 +174,7 @@ static int bd70528_gpio_get(struct gpio_chip *chip, unsigned int offset)
else if (ret == GPIO_LINE_DIRECTION_IN)
ret = bd70528_gpio_get_i(bdgpio, offset);
else
dev_err(bdgpio->chip.dev, "failed to read GPIO direction\n");
dev_err(bdgpio->dev, "failed to read GPIO direction\n");
return ret;
}
@ -181,20 +182,13 @@ static int bd70528_gpio_get(struct gpio_chip *chip, unsigned int offset)
static int bd70528_probe(struct platform_device *pdev)
{
struct bd70528_gpio *bdgpio;
struct rohm_regmap_dev *bd70528;
int ret;
bd70528 = dev_get_drvdata(pdev->dev.parent);
if (!bd70528) {
dev_err(&pdev->dev, "No MFD driver data\n");
return -EINVAL;
}
bdgpio = devm_kzalloc(&pdev->dev, sizeof(*bdgpio),
GFP_KERNEL);
if (!bdgpio)
return -ENOMEM;
bdgpio->chip.dev = &pdev->dev;
bdgpio->dev = &pdev->dev;
bdgpio->gpio.parent = pdev->dev.parent;
bdgpio->gpio.label = "bd70528-gpio";
bdgpio->gpio.owner = THIS_MODULE;
@ -210,7 +204,9 @@ static int bd70528_probe(struct platform_device *pdev)
#ifdef CONFIG_OF_GPIO
bdgpio->gpio.of_node = pdev->dev.parent->of_node;
#endif
bdgpio->chip.regmap = bd70528->regmap;
bdgpio->regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!bdgpio->regmap)
return -ENODEV;
ret = devm_gpiochip_add_data(&pdev->dev, &bdgpio->gpio,
bdgpio);

28
drivers/gpio/gpio-bd71828.c
View File

@ -11,7 +11,8 @@
#define HALL_GPIO_OFFSET 3
struct bd71828_gpio {
struct rohm_regmap_dev chip;
struct regmap *regmap;
struct device *dev;
struct gpio_chip gpio;
};
@ -29,10 +30,10 @@ static void bd71828_gpio_set(struct gpio_chip *chip, unsigned int offset,
if (offset == HALL_GPIO_OFFSET)
return;
ret = regmap_update_bits(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
ret = regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset),
BD71828_GPIO_OUT_MASK, val);
if (ret)
dev_err(bdgpio->chip.dev, "Could not set gpio to %d\n", value);
dev_err(bdgpio->dev, "Could not set gpio to %d\n", value);
}
static int bd71828_gpio_get(struct gpio_chip *chip, unsigned int offset)
@ -42,10 +43,10 @@ static int bd71828_gpio_get(struct gpio_chip *chip, unsigned int offset)
struct bd71828_gpio *bdgpio = gpiochip_get_data(chip);
if (offset == HALL_GPIO_OFFSET)
ret = regmap_read(bdgpio->chip.regmap, BD71828_REG_IO_STAT,
ret = regmap_read(bdgpio->regmap, BD71828_REG_IO_STAT,
&val);
else
ret = regmap_read(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
ret = regmap_read(bdgpio->regmap, GPIO_OUT_REG(offset),
&val);
if (!ret)
ret = (val & BD71828_GPIO_OUT_MASK);
@ -63,12 +64,12 @@ static int bd71828_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
switch (pinconf_to_config_param(config)) {
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
return regmap_update_bits(bdgpio->chip.regmap,
return regmap_update_bits(bdgpio->regmap,
GPIO_OUT_REG(offset),
BD71828_GPIO_DRIVE_MASK,
BD71828_GPIO_OPEN_DRAIN);
case PIN_CONFIG_DRIVE_PUSH_PULL:
return regmap_update_bits(bdgpio->chip.regmap,
return regmap_update_bits(bdgpio->regmap,
GPIO_OUT_REG(offset),
BD71828_GPIO_DRIVE_MASK,
BD71828_GPIO_PUSH_PULL);
@ -97,20 +98,13 @@ static int bd71828_get_direction(struct gpio_chip *chip, unsigned int offset)
static int bd71828_probe(struct platform_device *pdev)
{
struct bd71828_gpio *bdgpio;
struct rohm_regmap_dev *bd71828;
bd71828 = dev_get_drvdata(pdev->dev.parent);
if (!bd71828) {
dev_err(&pdev->dev, "No MFD driver data\n");
return -EINVAL;
}
bdgpio = devm_kzalloc(&pdev->dev, sizeof(*bdgpio),
GFP_KERNEL);
if (!bdgpio)
return -ENOMEM;
bdgpio->chip.dev = &pdev->dev;
bdgpio->dev = &pdev->dev;
bdgpio->gpio.parent = pdev->dev.parent;
bdgpio->gpio.label = "bd71828-gpio";
bdgpio->gpio.owner = THIS_MODULE;
@ -128,7 +122,9 @@ static int bd71828_probe(struct platform_device *pdev)
*/
bdgpio->gpio.ngpio = 4;
bdgpio->gpio.of_node = pdev->dev.parent->of_node;
bdgpio->chip.regmap = bd71828->regmap;
bdgpio->regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!bdgpio->regmap)
return -ENODEV;
return devm_gpiochip_add_data(&pdev->dev, &bdgpio->gpio,
bdgpio);