Signed-off-by: Liu Ying <Ying.Liu@xxxxxxxxxxxxx>
---
v9->v9.5:
* Add kernel-doc for the new helper function to address Daniel Vetter's
comment.
v8->v9:
* Rebase onto the imx-drm/next branch of Philipp Zabel's open git repository.
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 | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index f1d8d0d..cabc910 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -163,6 +163,28 @@ static inline struct mipi_dsi_device *to_mipi_dsi_device(struct device *dev)
return container_of(dev, struct mipi_dsi_device, dev);
}
+/**
+ * mipi_dsi_pixel_format_to_bpp() - get bits per pixel for a mipi dsi
+ * pixel format
+ * @fmt: mipi dsi pixel format
+ *
+ * Return: The bits per pixel value for the mipi dsi pixel format on success or
+ * a negative error code on failure.
+ */
+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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