diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2020-05-14 21:09:44 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2020-05-17 14:54:39 +0200 |
| commit | 1efa9eff7b94ed834162a17091db2fedc656763b (patch) | |
| tree | 13508e7b6d1b29a4dffeaad782ddf78d91d5ea3a /drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | |
| parent | drm/sun4i: mixer: Call of_dma_configure if there's an IOMMU (diff) | |
| download | linux-1efa9eff7b94ed834162a17091db2fedc656763b.tar.xz linux-1efa9eff7b94ed834162a17091db2fedc656763b.zip | |
drm/omap: display: use devm_of_find_backlight
Look up backlight device using devm_of_find_backlight().
This simplifies the code and prevents us from hardcoding
the node name in the driver.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Zheng Bin <zhengbin13@huawei.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Enrico Weigelt <info@metux.net>
Cc: Allison Randal <allison@lohutok.net>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200514191001.457441-2-sam@ravnborg.org
Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c index 3484b5d4a91c..faca5c873bde 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -1163,7 +1163,7 @@ static const struct omap_dss_driver dsicm_dss_driver = { static int dsicm_probe_of(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; - struct device_node *backlight; + struct backlight_device *backlight; struct panel_drv_data *ddata = platform_get_drvdata(pdev); struct display_timing timing; int err; @@ -1216,17 +1216,15 @@ static int dsicm_probe_of(struct platform_device *pdev) ddata->vddi = NULL; } - backlight = of_parse_phandle(node, "backlight", 0); - if (backlight) { - ddata->extbldev = of_find_backlight_by_node(backlight); - of_node_put(backlight); + backlight = devm_of_find_backlight(&pdev->dev); + if (IS_ERR(backlight)) + return PTR_ERR(backlight); - if (!ddata->extbldev) - return -EPROBE_DEFER; - } else { - /* assume native backlight support */ + /* If no backlight device is found assume native backlight support */ + if (backlight) + ddata->extbldev = backlight; + else ddata->use_dsi_backlight = true; - } /* TODO: ulps */ |