diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-novatek-nt39016.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-novatek-nt39016.c | 46 |
1 files changed, 16 insertions, 30 deletions
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt39016.c b/drivers/gpu/drm/panel/panel-novatek-nt39016.c index 91df050ba3f6..f8151fe3ac9a 100644 --- a/drivers/gpu/drm/panel/panel-novatek-nt39016.c +++ b/drivers/gpu/drm/panel/panel-novatek-nt39016.c @@ -6,7 +6,6 @@ * Copyright (C) 2019, Paul Cercueil <paul@crapouillou.net> */ -#include <linux/backlight.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/gpio/consumer.h> @@ -57,14 +56,11 @@ struct nt39016_panel_info { struct nt39016 { struct drm_panel drm_panel; - struct device *dev; struct regmap *map; struct regulator *supply; const struct nt39016_panel_info *panel_info; struct gpio_desc *reset_gpio; - - struct backlight_device *backlight; }; static inline struct nt39016 *to_nt39016(struct drm_panel *panel) @@ -127,7 +123,7 @@ static int nt39016_prepare(struct drm_panel *drm_panel) err = regulator_enable(panel->supply); if (err) { - dev_err(panel->dev, "Failed to enable power supply: %d", err); + dev_err(drm_panel->dev, "Failed to enable power supply: %d\n", err); return err; } @@ -146,7 +142,7 @@ static int nt39016_prepare(struct drm_panel *drm_panel) err = regmap_multi_reg_write(panel->map, nt39016_panel_regs, ARRAY_SIZE(nt39016_panel_regs)); if (err) { - dev_err(panel->dev, "Failed to init registers: %d", err); + dev_err(drm_panel->dev, "Failed to init registers: %d\n", err); goto err_disable_regulator; } @@ -176,18 +172,16 @@ static int nt39016_enable(struct drm_panel *drm_panel) ret = regmap_write(panel->map, NT39016_REG_SYSTEM, NT39016_SYSTEM_RESET_N | NT39016_SYSTEM_STANDBY); if (ret) { - dev_err(panel->dev, "Unable to enable panel: %d", ret); + dev_err(drm_panel->dev, "Unable to enable panel: %d\n", ret); return ret; } - if (panel->backlight) { + if (drm_panel->backlight) { /* Wait for the picture to be ready before enabling backlight */ msleep(150); - - ret = backlight_enable(panel->backlight); } - return ret; + return 0; } static int nt39016_disable(struct drm_panel *drm_panel) @@ -195,12 +189,10 @@ static int nt39016_disable(struct drm_panel *drm_panel) struct nt39016 *panel = to_nt39016(drm_panel); int err; - backlight_disable(panel->backlight); - err = regmap_write(panel->map, NT39016_REG_SYSTEM, NT39016_SYSTEM_RESET_N); if (err) { - dev_err(panel->dev, "Unable to disable panel: %d", err); + dev_err(drm_panel->dev, "Unable to disable panel: %d\n", err); return err; } @@ -259,7 +251,6 @@ static int nt39016_probe(struct spi_device *spi) if (!panel) return -ENOMEM; - panel->dev = dev; spi_set_drvdata(spi, panel); panel->panel_info = of_device_get_match_data(dev); @@ -268,13 +259,13 @@ static int nt39016_probe(struct spi_device *spi) panel->supply = devm_regulator_get(dev, "power"); if (IS_ERR(panel->supply)) { - dev_err(dev, "Failed to get power supply"); + dev_err(dev, "Failed to get power supply\n"); return PTR_ERR(panel->supply); } panel->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(panel->reset_gpio)) { - dev_err(dev, "Failed to get reset GPIO"); + dev_err(dev, "Failed to get reset GPIO\n"); return PTR_ERR(panel->reset_gpio); } @@ -282,33 +273,28 @@ static int nt39016_probe(struct spi_device *spi) spi->mode = SPI_MODE_3 | SPI_3WIRE; err = spi_setup(spi); if (err) { - dev_err(dev, "Failed to setup SPI"); + dev_err(dev, "Failed to setup SPI\n"); return err; } panel->map = devm_regmap_init_spi(spi, &nt39016_regmap_config); if (IS_ERR(panel->map)) { - dev_err(dev, "Failed to init regmap"); + dev_err(dev, "Failed to init regmap\n"); return PTR_ERR(panel->map); } - panel->backlight = devm_of_find_backlight(dev); - if (IS_ERR(panel->backlight)) { - err = PTR_ERR(panel->backlight); - if (err != -EPROBE_DEFER) - dev_err(dev, "Failed to get backlight handle"); - return err; - } - drm_panel_init(&panel->drm_panel, dev, &nt39016_funcs, DRM_MODE_CONNECTOR_DPI); - err = drm_panel_add(&panel->drm_panel); - if (err < 0) { - dev_err(dev, "Failed to register panel"); + err = drm_panel_of_backlight(&panel->drm_panel); + if (err) { + if (err != -EPROBE_DEFER) + dev_err(dev, "Failed to get backlight handle\n"); return err; } + drm_panel_add(&panel->drm_panel); + return 0; } |