xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm: Add mode_config .get_format_info() hook

Browse Source 
Allow drivers to return a custom drm_format_info structure for special
fb layouts. We'll use this for the compression control surface in i915.

v2: Fix drm_get_format_info() kernel doc (Laurent)
    Don't pass 'dev' to the new hook (Laurent)
v3: s/compresssion/compression/ (Ben)

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170321181218.10042-4-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä
2017-03-21 20:12:16 +02:00
parent 33f673aa55
commit 6a0f9ebfc5
6 changed files with 54 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/drm_framebuffer.c
View File

@@ -144,11 +144,13 @@ static int fb_plane_height(int height,
return DIV_ROUND_UP(height, format->vsub);
}
static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
static int framebuffer_check(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *r)
{
const struct drm_format_info *info;
int i;
/* check if the format is supported at all */
info = __drm_format_info(r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN);
if (!info) {
struct drm_format_name_buf format_name;
@@ -158,6 +160,9 @@ static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
return -EINVAL;
}
/* now let the driver pick its own format info */
info = drm_get_format_info(dev, r);
if (r->width == 0) {
DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width);
return -EINVAL;
@@ -281,7 +286,7 @@ drm_internal_framebuffer_create(struct drm_device *dev,
return ERR_PTR(-EINVAL);
}
ret = framebuffer_check(r);
ret = framebuffer_check(dev, r);
if (ret)
return ERR_PTR(ret);