drm/panel: Add support for Panasonic VVX10F004B0

The Panasonic VVX10F004B0 is a 10.1" WUXGA TFT LCD panel connected using
four DSI lanes.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 87 insertions, 7 deletions

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 767b7bef199f..3e611afc93f4 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -31,6 +31,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
 #include <drm/drm_panel.h>
 
 struct panel_desc {
@@ -378,6 +379,13 @@ static struct platform_driver panel_simple_platform_driver = {
         .remove = panel_simple_platform_remove,
 };
 
+struct panel_desc_dsi {
+        struct panel_desc desc;
+
+        enum mipi_dsi_pixel_format format;
+        unsigned int lanes;
+};
+
 static const struct drm_display_mode panasonic_vvx10f004b00_mode = {
         .clock = 157200,
         .hdisplay = 1920,
@@ -391,23 +399,95 @@ static const struct drm_display_mode panasonic_vvx10f004b00_mode = {
         .vrefresh = 60,
 };
 
-static const struct panel_desc panasonic_vvx10f004b00 = {
-        .modes = &panasonic_vvx10f004b00_mode,
-        .num_modes = 1,
-        .size = {
-                .width = 217,
-                .height = 136,
+static const struct panel_desc_dsi panasonic_vvx10f004b00 = {
+        .desc = {
+                .modes = &panasonic_vvx10f004b00_mode,
+                .num_modes = 1,
+                .size = {
+                        .width = 217,
+                        .height = 136,
+                },
         },
+        .format = MIPI_DSI_FMT_RGB888,
+        .lanes = 4,
+};
+
+static const struct of_device_id dsi_of_match[] = {
+        {
+                .compatible = "panasonic,vvx10f004b00",
+                .data = &panasonic_vvx10f004b00
+        }, {
+                /* sentinel */
+        }
+};
+MODULE_DEVICE_TABLE(of, dsi_of_match);
+
+static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
+{
+        const struct panel_desc_dsi *desc;
+        const struct of_device_id *id;
+        int err;
+
+        id = of_match_node(dsi_of_match, dsi->dev.of_node);
+        if (!id)
+                return -ENODEV;
+
+        desc = id->data;
+
+        err = panel_simple_probe(&dsi->dev, &desc->desc);
+        if (err < 0)
+                return err;
+
+        dsi->format = desc->format;
+        dsi->lanes = desc->lanes;
+
+        return mipi_dsi_attach(dsi);
+}
+
+static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
+{
+        int err;
+
+        err = mipi_dsi_detach(dsi);
+        if (err < 0)
+                dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
+
+        return panel_simple_remove(&dsi->dev);
+}
+
+static struct mipi_dsi_driver panel_simple_dsi_driver = {
+        .driver = {
+                .name = "panel-simple-dsi",
+                .owner = THIS_MODULE,
+                .of_match_table = dsi_of_match,
+        },
+        .probe = panel_simple_dsi_probe,
+        .remove = panel_simple_dsi_remove,
 };
 
 static int __init panel_simple_init(void)
 {
-        return platform_driver_register(&panel_simple_platform_driver);
+        int err;
+
+        err = platform_driver_register(&panel_simple_platform_driver);
+        if (err < 0)
+                return err;
+
+        if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
+                err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
+                if (err < 0)
+                        return err;
+        }
+
+        return 0;
 }
 module_init(panel_simple_init);
 
 static void __exit panel_simple_exit(void)
 {
+        if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
+                mipi_dsi_driver_unregister(&panel_simple_dsi_driver);
+
         platform_driver_unregister(&panel_simple_platform_driver);
 }
 module_exit(panel_simple_exit);