From: Bartosz Golaszewski bgolaszewski@baylibre.com
Now that the last user of platform data (sh ecovec24) defines a proper GPIO lookup and sets the 'default-on' device property, we can drop the platform_data-specific GPIO handling and unify a big chunk of code.
The only field used from the platform data is now the fbdev pointer.
Signed-off-by: Bartosz Golaszewski bgolaszewski@baylibre.com Reviewed-by: Linus Walleij linus.walleij@linaro.org Reviewed-by: Daniel Thompson daniel.thompson@linaro.org Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com --- drivers/video/backlight/gpio_backlight.c | 62 +++++------------------- 1 file changed, 11 insertions(+), 51 deletions(-)
diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 52f17c9ca1c3..ddc7d3b288b7 100644 --- a/drivers/video/backlight/gpio_backlight.c +++ b/drivers/video/backlight/gpio_backlight.c @@ -6,7 +6,6 @@ #include <linux/backlight.h> #include <linux/err.h> #include <linux/fb.h> -#include <linux/gpio.h> /* Only for legacy support */ #include <linux/gpio/consumer.h> #include <linux/init.h> #include <linux/kernel.h> @@ -61,28 +60,6 @@ static const struct backlight_ops gpio_backlight_ops = { .check_fb = gpio_backlight_check_fb, };
-static int gpio_backlight_probe_dt(struct platform_device *pdev, - struct gpio_backlight *gbl) -{ - struct device *dev = &pdev->dev; - int ret; - - gbl->def_value = device_property_read_bool(dev, "default-on"); - - gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS); - if (IS_ERR(gbl->gpiod)) { - ret = PTR_ERR(gbl->gpiod); - - if (ret != -EPROBE_DEFER) { - dev_err(dev, - "Error: The gpios parameter is missing or invalid.\n"); - } - return ret; - } - - return 0; -} - static int gpio_backlight_initial_power_state(struct gpio_backlight *gbl) { struct device_node *node = gbl->dev->of_node; @@ -114,35 +91,18 @@ static int gpio_backlight_probe(struct platform_device *pdev)
gbl->dev = &pdev->dev;
- if (pdev->dev.fwnode) { - ret = gpio_backlight_probe_dt(pdev, gbl); - if (ret) - return ret; - } else if (pdata) { - /* - * Legacy platform data GPIO retrieveal. Do not expand - * the use of this code path, currently only used by one - * SH board. - */ - unsigned long flags = GPIOF_DIR_OUT; - + if (pdata) gbl->fbdev = pdata->fbdev; - gbl->def_value = pdata->def_value; - flags |= gbl->def_value ? GPIOF_INIT_HIGH : GPIOF_INIT_LOW; - - ret = devm_gpio_request_one(gbl->dev, pdata->gpio, flags, - pdata ? pdata->name : "backlight"); - if (ret < 0) { - dev_err(&pdev->dev, "unable to request GPIO\n"); - return ret; - } - gbl->gpiod = gpio_to_desc(pdata->gpio); - if (!gbl->gpiod) - return -EINVAL; - } else { - dev_err(&pdev->dev, - "failed to find platform data or device tree node.\n"); - return -ENODEV; + + gbl->def_value = device_property_read_bool(&pdev->dev, "default-on"); + + gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_ASIS); + if (IS_ERR(gbl->gpiod)) { + ret = PTR_ERR(gbl->gpiod); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "Error: The gpios parameter is missing or invalid.\n"); + return ret; }
memset(&props, 0, sizeof(props));