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drm: move drm_mode_legacy_fb_format to drm_fourcc.c 

It's part of the drm fourcc handling code, mapping the old depth/bpp
values to new fourcc codes.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160829082757.17913-6-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter 2016-08-29 10:27:54 +02:00
parent a2511a557e
commit ec5e304747
4 changed files with 44 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/gpu/drm/drm_crtc.c
View File

@ -1671,49 +1671,6 @@ int drm_mode_cursor2_ioctl(struct drm_device *dev,
return drm_mode_cursor_common(dev, req, file_priv);
}
/**
* drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
* @bpp: bits per pixels
* @depth: bit depth per pixel
*
* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
* Useful in fbdev emulation code, since that deals in those values.
*/
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
{
uint32_t fmt;
switch (bpp) {
case 8:
fmt = DRM_FORMAT_C8;
break;
case 16:
if (depth == 15)
fmt = DRM_FORMAT_XRGB1555;
else
fmt = DRM_FORMAT_RGB565;
break;
case 24:
fmt = DRM_FORMAT_RGB888;
break;
case 32:
if (depth == 24)
fmt = DRM_FORMAT_XRGB8888;
else if (depth == 30)
fmt = DRM_FORMAT_XRGB2101010;
else
fmt = DRM_FORMAT_ARGB8888;
break;
default:
DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
fmt = DRM_FORMAT_XRGB8888;
break;
}
return fmt;
}
EXPORT_SYMBOL(drm_mode_legacy_fb_format);
static bool drm_property_type_valid(struct drm_property *property)
{
if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)

43
drivers/gpu/drm/drm_fourcc.c
View File

@ -35,6 +35,49 @@ static char printable_char(int c)
return isascii(c) && isprint(c) ? c : '?';
}
/**
* drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
* @bpp: bits per pixels
* @depth: bit depth per pixel
*
* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
* Useful in fbdev emulation code, since that deals in those values.
*/
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
{
uint32_t fmt;
switch (bpp) {
case 8:
fmt = DRM_FORMAT_C8;
break;
case 16:
if (depth == 15)
fmt = DRM_FORMAT_XRGB1555;
else
fmt = DRM_FORMAT_RGB565;
break;
case 24:
fmt = DRM_FORMAT_RGB888;
break;
case 32:
if (depth == 24)
fmt = DRM_FORMAT_XRGB8888;
else if (depth == 30)
fmt = DRM_FORMAT_XRGB2101010;
else
fmt = DRM_FORMAT_ARGB8888;
break;
default:
DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
fmt = DRM_FORMAT_XRGB8888;
break;
}
return fmt;
}
EXPORT_SYMBOL(drm_mode_legacy_fb_format);
/**
* drm_get_format_name - return a string for drm fourcc format
* @format: format to compute name of

2
include/drm/drm_crtc.h
View File

@ -2158,8 +2158,6 @@ extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
extern int drm_mode_set_config_internal(struct drm_mode_set *set);
extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
char topology[8]);
extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,

1
include/drm/drm_fourcc.h
View File

@ -25,6 +25,7 @@
#include <linux/types.h>
#include <uapi/drm/drm_fourcc.h>
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, int *bpp);
int drm_format_num_planes(uint32_t format);
int drm_format_plane_cpp(uint32_t format, int plane);