[PATCH v3 04/12] drm/dsi: Add a helper to get bits per pixel of MIPI DSI pixel format

[Chris Zhong]

From: Liu Ying <ying....@freescale.com>

Signed-off-by: Liu Ying <Ying.Liu at freescale.com>
Acked-by: Thierry Reding <treding at nvidia.com>
Signed-off-by: Chris Zhong <zyw at rock-chips.com>
---

Changes in v3: None
Changes in v2: None

 include/drm/drm_mipi_dsi.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index f1d8d0d..3662021 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -163,6 +163,20 @@ static inline struct mipi_dsi_device 
*to_mipi_dsi_device(struct device *dev)
        return container_of(dev, struct mipi_dsi_device, dev);
 }

+static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt)
+{
+       switch (fmt) {
+       case MIPI_DSI_FMT_RGB888:
+       case MIPI_DSI_FMT_RGB666:
+               return 24;
+       case MIPI_DSI_FMT_RGB666_PACKED:
+               return 18;
+       case MIPI_DSI_FMT_RGB565:
+               return 16;
+       }
+       return -EINVAL;
+}
+
 struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node 
*np);
 int mipi_dsi_attach(struct mipi_dsi_device *dsi);
 int mipi_dsi_detach(struct mipi_dsi_device *dsi);
-- 
2.6.3