drm/omap: panel-dsi-cm: add physical size support

Add support to load physical size information from DT using
the properties defined by the common panel binding.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index b98ea9e..8459139 100644 (file)
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -66,6 +66,9 @@ struct panel_drv_data {
 
        bool use_dsi_backlight;
 
+       int width_mm;
+       int height_mm;
+
        struct omap_dsi_pin_config pin_config;
 
        /* runtime variables */
@@ -1163,6 +1166,15 @@ static int dsicm_check_timings(struct omap_dss_device *dssdev,
        return ret;
 }
 
+static void dsicm_get_size(struct omap_dss_device *dssdev,
+                         unsigned int *width, unsigned int *height)
+{
+       struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+       *width = ddata->width_mm;
+       *height = ddata->height_mm;
+}
+
 static struct omap_dss_driver dsicm_ops = {
        .connect        = dsicm_connect,
        .disconnect     = dsicm_disconnect,
@@ -1175,6 +1187,7 @@ static struct omap_dss_driver dsicm_ops = {
 
        .get_timings    = dsicm_get_timings,
        .check_timings  = dsicm_check_timings,
+       .get_size       = dsicm_get_size,
 
        .enable_te      = dsicm_enable_te,
        .get_te         = dsicm_get_te,
@@ -1216,6 +1229,12 @@ static int dsicm_probe_of(struct platform_device *pdev)
                         "failed to get video timing, using defaults\n");
        }
 
+       ddata->width_mm = 0;
+       of_property_read_u32(node, "width-mm", &ddata->width_mm);
+
+       ddata->height_mm = 0;
+       of_property_read_u32(node, "height-mm", &ddata->height_mm);
+
        in = omapdss_of_find_source_for_first_ep(node);
        if (IS_ERR(in)) {
                dev_err(&pdev->dev, "failed to find video source\n");