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authorAndreas Kemnade <andreas@kemnade.info>2019-02-05 09:38:12 +0300
committerTomi Valkeinen <tomi.valkeinen@ti.com>2019-03-18 12:42:14 +0300
commitb477a009b4266a3bdb851477e3f77bf27c2efcc3 (patch)
treebc310635bd8ea4edc18e0fcdd3c0154887fb4dad
parentfe4ed1b457943113ee1138c939fbdeede4af6cf3 (diff)
downloadlinux-b477a009b4266a3bdb851477e3f77bf27c2efcc3.tar.xz
drm/omap: panel-tpo-td028ttec1: add backlight support
This panel has a backlight, so fetch it from devicetree using the corresponding property as documented in panel-common.txt. It is implemented the same way as in panel-dpi.c This ensures the backlight is also disabled when the display is turned off like when doing xset dpms force off. Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
-rw-r--r--drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
index fa80d4f7f699..2ad161e33106 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
@@ -35,6 +35,8 @@ struct panel_drv_data {
struct videomode vm;
+ struct backlight_device *backlight;
+
struct spi_device *spi_dev;
};
@@ -258,12 +260,16 @@ static void td028ttec1_panel_enable(struct omap_dss_device *dssdev)
if (r)
dev_err(dssdev->dev, "%s: write error\n", __func__);
+
+ backlight_enable(ddata->backlight);
}
static void td028ttec1_panel_disable(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
+ backlight_disable(ddata->backlight);
+
dev_dbg(dssdev->dev, "td028ttec1_panel_disable()\n");
jbt_ret_write_0(ddata, JBT_REG_DISPLAY_OFF);
@@ -311,6 +317,10 @@ static int td028ttec1_panel_probe(struct spi_device *spi)
if (ddata == NULL)
return -ENOMEM;
+ ddata->backlight = devm_of_find_backlight(&spi->dev);
+ if (IS_ERR(ddata->backlight))
+ return PTR_ERR(ddata->backlight);
+
dev_set_drvdata(&spi->dev, ddata);
ddata->spi_dev = spi;