diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-03-21 21:12:14 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-03-22 20:37:17 +0300 |
| commit | 568c5e453666fd8e0a8b11b440291f59e4da28c8 (patch) | |
| tree | 4f27e5e04429a36fe56f27f51e4d4a196c3b7b00 /drivers/gpu/drm/drm_framebuffer.c | |
| parent | eea54ed46edd42cf703be752d21731567142aa28 (diff) | |
| download | linux-568c5e453666fd8e0a8b11b440291f59e4da28c8.tar.xz | |
drm: Share the code to compute color plane dimesions
framebuffer_check() has some hand rolled code to compute the color plane
dimensions based on the subsampled information. Let's share the code
between framebuffer_check() and drm_framebuffer_plane_{width,height}().
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170321181218.10042-2-ville.syrjala@linux.intel.com
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Diffstat (limited to 'drivers/gpu/drm/drm_framebuffer.c')
| -rw-r--r-- | drivers/gpu/drm/drm_framebuffer.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index e4909aef75d7..1138f90a7d5d 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -126,6 +126,24 @@ int drm_mode_addfb(struct drm_device *dev, return 0; } +static int fb_plane_width(int width, + const struct drm_format_info *format, int plane) +{ + if (plane == 0) + return width; + + return width / format->hsub; +} + +static int fb_plane_height(int height, + const struct drm_format_info *format, int plane) +{ + if (plane == 0) + return height; + + return height / format->vsub; +} + static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) { const struct drm_format_info *info; @@ -151,8 +169,8 @@ static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) } for (i = 0; i < info->num_planes; i++) { - unsigned int width = r->width / (i != 0 ? info->hsub : 1); - unsigned int height = r->height / (i != 0 ? info->vsub : 1); + unsigned int width = fb_plane_width(r->width, info, i); + unsigned int height = fb_plane_height(r->height, info, i); unsigned int cpp = info->cpp[i]; if (!r->handles[i]) { @@ -816,10 +834,7 @@ int drm_framebuffer_plane_width(int width, if (plane >= fb->format->num_planes) return 0; - if (plane == 0) - return width; - - return width / fb->format->hsub; + return fb_plane_width(width, fb->format, plane); } EXPORT_SYMBOL(drm_framebuffer_plane_width); @@ -838,9 +853,6 @@ int drm_framebuffer_plane_height(int height, if (plane >= fb->format->num_planes) return 0; - if (plane == 0) - return height; - - return height / fb->format->vsub; + return fb_plane_height(height, fb->format, plane); } EXPORT_SYMBOL(drm_framebuffer_plane_height); |