From: Meghana Madhyastha Date: Wed, 24 Jan 2018 16:40:51 +0000 Subject: drm/panel: Use of_find_backlight helper MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Git-commit: c69f94570d7ab4c8cbc5ba14729cc73a7dbdbfec Patch-mainline: v4.17-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 Replace of_find_backlight_by_node and of the code around it with of_find_backlight helper to avoid repetition of code. Reviewed-by: Noralf Trønnes Reviewed-by: Sean Paul Acked-by: Thierry Reding Signed-off-by: Meghana Madhyastha Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/140d01afb138d687680b2d1776a4c101c9fa9a0a.1516810725.git.meghana.madhyastha@gmail.com Acked-by: Petr Tesarik --- drivers/gpu/drm/panel/panel-innolux-p079zca.c | 24 +++---------------- drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c | 30 ++++-------------------- drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 27 +++------------------ 3 files changed, 14 insertions(+), 67 deletions(-) --- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c +++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c @@ -215,7 +215,6 @@ MODULE_DEVICE_TABLE(of, innolux_of_match static int innolux_panel_add(struct innolux_panel *innolux) { struct device *dev = &innolux->link->dev; - struct device_node *np; int err; innolux->supply = devm_regulator_get(dev, "power"); @@ -230,37 +229,22 @@ static int innolux_panel_add(struct inno innolux->enable_gpio = NULL; } - np = of_parse_phandle(dev->of_node, "backlight", 0); - if (np) { - innolux->backlight = of_find_backlight_by_node(np); - of_node_put(np); + innolux->backlight = devm_of_find_backlight(dev); - if (!innolux->backlight) - return -EPROBE_DEFER; - } + if (IS_ERR(innolux->backlight)) + return PTR_ERR(innolux->backlight); drm_panel_init(&innolux->base); innolux->base.funcs = &innolux_panel_funcs; innolux->base.dev = &innolux->link->dev; - err = drm_panel_add(&innolux->base); - if (err < 0) - goto put_backlight; - - return 0; - -put_backlight: - put_device(&innolux->backlight->dev); - - return err; + return drm_panel_add(&innolux->base); } static void innolux_panel_del(struct innolux_panel *innolux) { if (innolux->base.dev) drm_panel_remove(&innolux->base); - - put_device(&innolux->backlight->dev); } static int innolux_panel_probe(struct mipi_dsi_device *dsi) --- a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c +++ b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c @@ -318,8 +318,7 @@ MODULE_DEVICE_TABLE(of, sharp_of_match); static int sharp_panel_add(struct sharp_panel *sharp) { - struct device_node *np; - int err; + struct device *dev = &sharp->link1->dev; sharp->mode = &default_mode; @@ -327,30 +326,16 @@ static int sharp_panel_add(struct sharp_ if (IS_ERR(sharp->supply)) return PTR_ERR(sharp->supply); - np = of_parse_phandle(sharp->link1->dev.of_node, "backlight", 0); - if (np) { - sharp->backlight = of_find_backlight_by_node(np); - of_node_put(np); - - if (!sharp->backlight) - return -EPROBE_DEFER; - } + sharp->backlight = devm_of_find_backlight(dev); + + if (IS_ERR(sharp->backlight)) + return PTR_ERR(sharp->backlight); drm_panel_init(&sharp->base); sharp->base.funcs = &sharp_panel_funcs; sharp->base.dev = &sharp->link1->dev; - err = drm_panel_add(&sharp->base); - if (err < 0) - goto put_backlight; - - return 0; - -put_backlight: - if (sharp->backlight) - put_device(&sharp->backlight->dev); - - return err; + return drm_panel_add(&sharp->base); } static void sharp_panel_del(struct sharp_panel *sharp) @@ -358,9 +343,6 @@ static void sharp_panel_del(struct sharp if (sharp->base.dev) drm_panel_remove(&sharp->base); - if (sharp->backlight) - put_device(&sharp->backlight->dev); - if (sharp->link2) put_device(&sharp->link2->dev); } --- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c @@ -253,8 +253,6 @@ static const struct drm_panel_funcs shar static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt) { struct device *dev = &sharp_nt->dsi->dev; - struct device_node *np; - int ret; sharp_nt->mode = &default_mode; @@ -271,39 +269,22 @@ static int sharp_nt_panel_add(struct sha gpiod_set_value(sharp_nt->reset_gpio, 0); } - np = of_parse_phandle(dev->of_node, "backlight", 0); - if (np) { - sharp_nt->backlight = of_find_backlight_by_node(np); - of_node_put(np); + sharp_nt->backlight = devm_of_find_backlight(dev); - if (!sharp_nt->backlight) - return -EPROBE_DEFER; - } + if (IS_ERR(sharp_nt->backlight)) + return PTR_ERR(sharp_nt->backlight); drm_panel_init(&sharp_nt->base); sharp_nt->base.funcs = &sharp_nt_panel_funcs; sharp_nt->base.dev = &sharp_nt->dsi->dev; - ret = drm_panel_add(&sharp_nt->base); - if (ret < 0) - goto put_backlight; - - return 0; - -put_backlight: - if (sharp_nt->backlight) - put_device(&sharp_nt->backlight->dev); - - return ret; + return drm_panel_add(&sharp_nt->base); } static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt) { if (sharp_nt->base.dev) drm_panel_remove(&sharp_nt->base); - - if (sharp_nt->backlight) - put_device(&sharp_nt->backlight->dev); } static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)