Hi Andreas,
Thank you for the patch.
On Tue, Feb 05, 2019 at 07:38:12AM +0100, Andreas Kemnade wrote:
> 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@xxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - do not reorder initialisation
> - fix commit message
>
> drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
> index 7ddc8c574a61..1db8740f3c21 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;
> };
>
> @@ -268,6 +270,8 @@ static int td028ttec1_panel_enable(struct omap_dss_device *dssdev)
>
> r |= jbt_ret_write_0(ddata, JBT_REG_DISPLAY_ON);
>
> + backlight_enable(ddata->backlight);
> +
> dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
>
> transfer_err:
> @@ -283,6 +287,8 @@ static void td028ttec1_panel_disable(struct omap_dss_device *dssdev)
> if (!omapdss_device_is_enabled(dssdev))
> return;
>
> + backlight_disable(ddata->backlight);
> +
> dev_dbg(dssdev->dev, "td028ttec1_panel_disable()\n");
>
> jbt_ret_write_0(ddata, JBT_REG_DISPLAY_OFF);
> @@ -334,6 +340,10 @@ 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;
--
Regards,
Laurent Pinchart
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