From: Stefan Agner stefan@agner.ch
The LVDS panel driver has almost everything which is required to describe a simple parallel RGB panel (also known as DPI, Display Pixel Interface).
Signed-off-by: Stefan Agner stefan@agner.ch Signed-off-by: Oleksandr Suvorov oleksandr.suvorov@toradex.com ---
drivers/gpu/drm/panel/panel-lvds.c | 40 +++++++++++++++++++++++------- 1 file changed, 31 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c index 5ce3f4a2b7a1..21a169aa3ae4 100644 --- a/drivers/gpu/drm/panel/panel-lvds.c +++ b/drivers/gpu/drm/panel/panel-lvds.c @@ -22,6 +22,11 @@ #include <drm/drm_crtc.h> #include <drm/drm_panel.h>
+enum panel_type { + PANEL_LVDS, + PANEL_DPI +}; + struct panel_lvds { struct drm_panel panel; struct device *dev; @@ -115,6 +120,7 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds) struct display_timing timing; const char *mapping; int ret; + enum panel_type type;
ret = of_get_display_timing(np, "panel-timing", &timing); if (ret < 0) { @@ -147,13 +153,28 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds) return -ENODEV; }
- if (!strcmp(mapping, "jeida-18")) { - lvds->bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG; - } else if (!strcmp(mapping, "jeida-24")) { - lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA; - } else if (!strcmp(mapping, "vesa-24")) { - lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG; - } else { + type = (enum panel_type)of_device_get_match_data(lvds->dev); + switch (type) { + case PANEL_LVDS: + if (!strcmp(mapping, "jeida-18")) + lvds->bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG; + else if (!strcmp(mapping, "jeida-24")) + lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA; + else if (!strcmp(mapping, "vesa-24")) + lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG; + break; + case PANEL_DPI: + if (!strcmp(mapping, "rgb24")) + lvds->bus_format = MEDIA_BUS_FMT_RGB888_1X24; + else if (!strcmp(mapping, "rgb565")) + lvds->bus_format = MEDIA_BUS_FMT_RGB565_1X16; + else if (!strcmp(mapping, "bgr666")) + lvds->bus_format = MEDIA_BUS_FMT_RGB666_1X18; + else if (!strcmp(mapping, "lvds666")) + lvds->bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI; + }; + + if (!lvds->bus_format) { dev_err(lvds->dev, "%pOF: invalid or missing %s DT property\n", np, "data-mapping"); return -EINVAL; @@ -247,7 +268,8 @@ static int panel_lvds_remove(struct platform_device *pdev) }
static const struct of_device_id panel_lvds_of_table[] = { - { .compatible = "panel-lvds", }, + { .compatible = "panel-lvds", .data = (void *)PANEL_LVDS }, + { .compatible = "panel-dpi", .data = (void *)PANEL_DPI }, { /* Sentinel */ }, };
@@ -257,7 +279,7 @@ static struct platform_driver panel_lvds_driver = { .probe = panel_lvds_probe, .remove = panel_lvds_remove, .driver = { - .name = "panel-lvds", + .name = "panel-generic", .of_match_table = panel_lvds_of_table, }, };