staging: imx-drm: add LVDS666 support for parallel display

Support the LVDS666 format on the IPUv3 parallel display.
This makes the screen work on my Hercules eCAFE Slim HD.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt b/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt
index 3be5ce7..e75f0e5 100644 (file)
--- a/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt
+++ b/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt
@@ -61,6 +61,7 @@ Required properties:
 Optional properties:
 - interface_pix_fmt: How this display is connected to the
   display interface. Currently supported types: "rgb24", "rgb565", "bgr666"
+  and "lvds666".
 - edid: verbatim EDID data block describing attached display.
 - ddc: phandle describing the i2c bus handling the display data
   channel

diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-dc.c b/drivers/staging/imx-drm/ipu-v3/ipu-dc.c
index d5de8bb..07514dc 100644 (file)
--- a/drivers/staging/imx-drm/ipu-v3/ipu-dc.c
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-dc.c
@@ -91,6 +91,7 @@ enum ipu_dc_map {
        IPU_DC_MAP_RGB565,
        IPU_DC_MAP_GBR24, /* TVEv2 */
        IPU_DC_MAP_BGR666,
+       IPU_DC_MAP_LVDS666,
        IPU_DC_MAP_BGR24,
 };
 
@@ -153,6 +154,8 @@ static int ipu_pixfmt_to_map(u32 fmt)
                return IPU_DC_MAP_GBR24;
        case V4L2_PIX_FMT_BGR666:
                return IPU_DC_MAP_BGR666;
+       case v4l2_fourcc('L', 'V', 'D', '6'):
+               return IPU_DC_MAP_LVDS666;
        case V4L2_PIX_FMT_BGR24:
                return IPU_DC_MAP_BGR24;
        default:
@@ -398,6 +401,12 @@ int ipu_dc_init(struct ipu_soc *ipu, struct device *dev,
        ipu_dc_map_config(priv, IPU_DC_MAP_BGR666, 1, 11, 0xfc); /* green */
        ipu_dc_map_config(priv, IPU_DC_MAP_BGR666, 2, 17, 0xfc); /* red */
 
+       /* lvds666 */
+       ipu_dc_map_clear(priv, IPU_DC_MAP_LVDS666);
+       ipu_dc_map_config(priv, IPU_DC_MAP_LVDS666, 0, 5, 0xfc); /* blue */
+       ipu_dc_map_config(priv, IPU_DC_MAP_LVDS666, 1, 13, 0xfc); /* green */
+       ipu_dc_map_config(priv, IPU_DC_MAP_LVDS666, 2, 21, 0xfc); /* red */
+
        /* bgr24 */
        ipu_dc_map_clear(priv, IPU_DC_MAP_BGR24);
        ipu_dc_map_config(priv, IPU_DC_MAP_BGR24, 2, 7, 0xff); /* red */

diff --git a/drivers/staging/imx-drm/parallel-display.c b/drivers/staging/imx-drm/parallel-display.c
index c60b6c6..eaf4dda 100644 (file)
--- a/drivers/staging/imx-drm/parallel-display.c
+++ b/drivers/staging/imx-drm/parallel-display.c
@@ -219,6 +219,8 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
                        imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB565;
                else if (!strcmp(fmt, "bgr666"))
                        imxpd->interface_pix_fmt = V4L2_PIX_FMT_BGR666;
+               else if (!strcmp(fmt, "lvds666"))
+                       imxpd->interface_pix_fmt = v4l2_fourcc('L', 'V', 'D', '6');
        }
 
        panel_node = of_parse_phandle(np, "fsl,panel", 0);