Hi,
On Tue, Dec 08, 2020 at 02:28:31PM +0200, Tomi Valkeinen wrote:
> Set the column & page address once during setup, instead of relying the
> DSI host driver to set those.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
-- Sebastian
> drivers/gpu/drm/panel/panel-dsi-cm.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-dsi-cm.c b/drivers/gpu/drm/panel/panel-dsi-cm.c
> index 38f79dca1fd0..556f9a2c5c0c 100644
> --- a/drivers/gpu/drm/panel/panel-dsi-cm.c
> +++ b/drivers/gpu/drm/panel/panel-dsi-cm.c
> @@ -170,6 +170,22 @@ static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3)
> return 0;
> }
>
> +static int dsicm_set_update_window(struct panel_drv_data *ddata)
> +{
> + struct mipi_dsi_device *dsi = ddata->dsi;
> + int r;
> +
> + r = mipi_dsi_dcs_set_column_address(dsi, 0, ddata->mode.hdisplay - 1);
> + if (r < 0)
> + return r;
> +
> + r = mipi_dsi_dcs_set_page_address(dsi, 0, ddata->mode.vdisplay - 1);
> + if (r < 0)
> + return r;
> +
> + return 0;
> +}
> +
> static int dsicm_bl_update_status(struct backlight_device *dev)
> {
> struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
> @@ -307,6 +323,10 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
> if (r)
> goto err;
>
> + r = dsicm_set_update_window(ddata);
> + if (r)
> + goto err;
> +
> r = mipi_dsi_dcs_set_display_on(ddata->dsi);
> if (r)
> goto err;
> --
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
>
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