[PATCH RFC v8 10/21] drm/dsi: Add a helper to get bits per pixel of MIPI DSI pixel format

From: Liu Ying
Date: Wed Dec 31 2014 - 03:20:14 EST


Signed-off-by: Liu Ying <Ying.Liu@xxxxxxxxxxxxx>
---
v7->v8:
* None.

v6->v7:
* None.

v5->v6:
* Address the over 80 characters in one line warning reported by the
checkpatch.pl script.

v4->v5:
* None.

v3->v4:
* None.

v2->v3:
* None.

v1->v2:
* Thierry Reding suggested that the mipi_dsi_pixel_format_to_bpp() function
could be placed at the common DRM MIPI DSI driver.
This patch is newly added.

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);
--
2.1.0

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