From 7d84a63a39b78443d09f2b4edf7ecb1d586379b4 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 7 Dec 2023 18:14:32 +0200 Subject: backlight: hx8357: Convert to agnostic GPIO API The of_gpio.h is going to be removed. In preparation of that convert the driver to the agnostic API. Fixes: fbbbcd177a27 ("gpiolib: of: add quirk for locating reset lines with legacy bindings") Signed-off-by: Andy Shevchenko Reviewed-by: Daniel Thompson Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20231207161513.3195509-2-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones --- drivers/video/backlight/hx8357.c | 74 ++++++++++++---------------------------- 1 file changed, 22 insertions(+), 52 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/backlight/hx8357.c b/drivers/video/backlight/hx8357.c index f76d2469d490..d7298376cf74 100644 --- a/drivers/video/backlight/hx8357.c +++ b/drivers/video/backlight/hx8357.c @@ -6,11 +6,11 @@ */ #include +#include #include #include #include #include -#include #include #define HX8357_NUM_IM_PINS 3 @@ -83,11 +83,10 @@ #define HX8369_SET_GAMMA_CURVE_RELATED 0xe0 struct hx8357_data { - unsigned im_pins[HX8357_NUM_IM_PINS]; - unsigned reset; + struct gpio_descs *im_pins; + struct gpio_desc *reset; struct spi_device *spi; int state; - bool use_im_pins; }; static u8 hx8357_seq_power[] = { @@ -321,11 +320,11 @@ static void hx8357_lcd_reset(struct lcd_device *lcdev) struct hx8357_data *lcd = lcd_get_data(lcdev); /* Reset the screen */ - gpio_set_value(lcd->reset, 1); + gpiod_set_value(lcd->reset, 0); usleep_range(10000, 12000); - gpio_set_value(lcd->reset, 0); + gpiod_set_value(lcd->reset, 1); usleep_range(10000, 12000); - gpio_set_value(lcd->reset, 1); + gpiod_set_value(lcd->reset, 0); /* The controller needs 120ms to recover from reset */ msleep(120); @@ -340,10 +339,10 @@ static int hx8357_lcd_init(struct lcd_device *lcdev) * Set the interface selection pins to SPI mode, with three * wires */ - if (lcd->use_im_pins) { - gpio_set_value_cansleep(lcd->im_pins[0], 1); - gpio_set_value_cansleep(lcd->im_pins[1], 0); - gpio_set_value_cansleep(lcd->im_pins[2], 1); + if (lcd->im_pins) { + gpiod_set_value_cansleep(lcd->im_pins->desc[0], 1); + gpiod_set_value_cansleep(lcd->im_pins->desc[1], 0); + gpiod_set_value_cansleep(lcd->im_pins->desc[2], 1); } ret = hx8357_spi_write_array(lcdev, hx8357_seq_power, @@ -580,6 +579,7 @@ MODULE_DEVICE_TABLE(of, hx8357_dt_ids); static int hx8357_probe(struct spi_device *spi) { + struct device *dev = &spi->dev; struct lcd_device *lcdev; struct hx8357_data *lcd; const struct of_device_id *match; @@ -601,49 +601,19 @@ static int hx8357_probe(struct spi_device *spi) if (!match || !match->data) return -EINVAL; - lcd->reset = of_get_named_gpio(spi->dev.of_node, "gpios-reset", 0); - if (!gpio_is_valid(lcd->reset)) { - dev_err(&spi->dev, "Missing dt property: gpios-reset\n"); - return -EINVAL; - } + lcd->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(lcd->reset)) + return dev_err_probe(dev, PTR_ERR(lcd->reset), "failed to request reset GPIO\n"); + gpiod_set_consumer_name(lcd->reset, "hx8357-reset"); - ret = devm_gpio_request_one(&spi->dev, lcd->reset, - GPIOF_OUT_INIT_HIGH, - "hx8357-reset"); - if (ret) { - dev_err(&spi->dev, - "failed to request gpio %d: %d\n", - lcd->reset, ret); - return -EINVAL; - } + lcd->im_pins = devm_gpiod_get_array_optional(dev, "im", GPIOD_OUT_LOW); + if (IS_ERR(lcd->im_pins)) + return dev_err_probe(dev, PTR_ERR(lcd->im_pins), "failed to request im GPIOs\n"); + if (lcd->im_pins->ndescs < HX8357_NUM_IM_PINS) + return dev_err_probe(dev, -EINVAL, "not enough im GPIOs\n"); - if (of_property_present(spi->dev.of_node, "im-gpios")) { - lcd->use_im_pins = 1; - - for (i = 0; i < HX8357_NUM_IM_PINS; i++) { - lcd->im_pins[i] = of_get_named_gpio(spi->dev.of_node, - "im-gpios", i); - if (lcd->im_pins[i] == -EPROBE_DEFER) { - dev_info(&spi->dev, "GPIO requested is not here yet, deferring the probe\n"); - return -EPROBE_DEFER; - } - if (!gpio_is_valid(lcd->im_pins[i])) { - dev_err(&spi->dev, "Missing dt property: im-gpios\n"); - return -EINVAL; - } - - ret = devm_gpio_request_one(&spi->dev, lcd->im_pins[i], - GPIOF_OUT_INIT_LOW, - "im_pins"); - if (ret) { - dev_err(&spi->dev, "failed to request gpio %d: %d\n", - lcd->im_pins[i], ret); - return -EINVAL; - } - } - } else { - lcd->use_im_pins = 0; - } + for (i = 0; i < HX8357_NUM_IM_PINS; i++) + gpiod_set_consumer_name(lcd->im_pins->desc[i], "im_pins"); lcdev = devm_lcd_device_register(&spi->dev, "mxsfb", &spi->dev, lcd, &hx8357_ops); -- cgit