diff options
author | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-21 15:46:59 +0200 |
---|---|---|
committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-25 14:49:49 +0200 |
commit | 059b5eb5d9554dea689430ad3872dcb37a35053d (patch) | |
tree | 72a9d8be21a6b1a1163f4ebd30d44f3d9ab2c2e7 /drivers | |
parent | af334c5d41a9d3b9df3204d50a9a8f566ef64c66 (diff) | |
download | linux-059b5eb5d9554dea689430ad3872dcb37a35053d.tar.bz2 |
drm: move native byte order quirk to new drm_driver_legacy_fb_format function
Turns out we need the pixel format fixup not only for the addfb ioctl,
but also for fbdev emulation code.
Ideally we would place it in drm_mode_legacy_fb_format(). That would
create alot of churn though, and most drivers don't care because they
never ever run on a big endian platform. So add a new
drm_driver_legacy_fb_format() function instead which looks at the
mode_config->quirk_addfb_prefer_host_byte_order flag.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180921134704.12826-2-kraxel@redhat.com
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/drm_fourcc.c | 30 | ||||
-rw-r--r-- | drivers/gpu/drm/drm_framebuffer.c | 13 |
2 files changed, 31 insertions, 12 deletions
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index be1d6aaef651..7c6d3922ed40 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -96,6 +96,36 @@ uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) EXPORT_SYMBOL(drm_mode_legacy_fb_format); /** + * drm_driver_legacy_fb_format - compute drm fourcc code from legacy description + * @bpp: bits per pixels + * @depth: bit depth per pixel + * @native: use host native byte order + * + * Computes a drm fourcc pixel format code for the given @bpp/@depth values. + * Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config, + * and depending on the quirk_addfb_prefer_host_byte_order flag it returns + * little endian byte order or host byte order framebuffer formats. + */ +uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, + uint32_t bpp, uint32_t depth) +{ + uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth); + + if (dev->mode_config.quirk_addfb_prefer_host_byte_order) { + if (fmt == DRM_FORMAT_XRGB8888) + fmt = DRM_FORMAT_HOST_XRGB8888; + if (fmt == DRM_FORMAT_ARGB8888) + fmt = DRM_FORMAT_HOST_ARGB8888; + if (fmt == DRM_FORMAT_RGB565) + fmt = DRM_FORMAT_HOST_RGB565; + if (fmt == DRM_FORMAT_XRGB1555) + fmt = DRM_FORMAT_HOST_XRGB1555; + } + return fmt; +} +EXPORT_SYMBOL(drm_driver_legacy_fb_format); + +/** * drm_get_format_name - fill a string with a drm fourcc format's name * @format: format to compute name of * @buf: caller-supplied buffer diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index 1ee3d6b44280..1e2126101c18 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -116,7 +116,7 @@ int drm_mode_addfb(struct drm_device *dev, struct drm_mode_fb_cmd *or, if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EOPNOTSUPP; - r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); + r.pixel_format = drm_driver_legacy_fb_format(dev, or->bpp, or->depth); if (r.pixel_format == DRM_FORMAT_INVALID) { DRM_DEBUG("bad {bpp:%d, depth:%d}\n", or->bpp, or->depth); return -EINVAL; @@ -133,17 +133,6 @@ int drm_mode_addfb(struct drm_device *dev, struct drm_mode_fb_cmd *or, r.pixel_format == DRM_FORMAT_XRGB2101010) r.pixel_format = DRM_FORMAT_XBGR2101010; - if (dev->mode_config.quirk_addfb_prefer_host_byte_order) { - if (r.pixel_format == DRM_FORMAT_XRGB8888) - r.pixel_format = DRM_FORMAT_HOST_XRGB8888; - if (r.pixel_format == DRM_FORMAT_ARGB8888) - r.pixel_format = DRM_FORMAT_HOST_ARGB8888; - if (r.pixel_format == DRM_FORMAT_RGB565) - r.pixel_format = DRM_FORMAT_HOST_RGB565; - if (r.pixel_format == DRM_FORMAT_XRGB1555) - r.pixel_format = DRM_FORMAT_HOST_XRGB1555; - } - ret = drm_mode_addfb2(dev, &r, file_priv); if (ret) return ret; |