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drm/uapi: Deprecate nonsense kms mode types

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BUILTIN, CRTC_C, CLOCK_C, and DEFULT mode types are unused. Let's
refuse to generate them or accept them from userspace either. A
cursory check didn't reveal any userspace code that would depend
on these.

v2: Recommend DRIVER instead of BUILTIN (ajax)

Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Adam Jackson <ajax@redhat.com>
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171115154504.14338-1-ville.syrjala@linux.intel.com
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
This commit is contained in:
Ville Syrjälä 2017-11-15 17:45:04 +02:00
parent 538af6cbdf
commit b7245cc536
2 changed files with 9 additions and 12 deletions
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7
include/drm/drm_modes.h
View File

@ -242,8 +242,6 @@ struct drm_display_mode {
* A bitmask of flags, mostly about the source of a mode. Possible flags
* are:
*
* - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, effectively
* unused.
* - DRM_MODE_TYPE_PREFERRED: Preferred mode, usually the native
* resolution of an LCD panel. There should only be one preferred
* mode per connector at any given time.
@ -253,8 +251,11 @@ struct drm_display_mode {
* - DRM_MODE_TYPE_USERDEF: Mode defined via kernel command line
*
* Plus a big list of flags which shouldn't be used at all, but are
* still around since these flags are also used in the userspace ABI:
* still around since these flags are also used in the userspace ABI.
* We no longer accept modes with these types though:
*
* - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, unused.
* Use DRM_MODE_TYPE_DRIVER instead.
* - DRM_MODE_TYPE_DEFAULT: Again a leftover, use
* DRM_MODE_TYPE_PREFERRED instead.
* - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C: Define leftovers

14
include/uapi/drm/drm_mode.h
View File

@ -38,19 +38,15 @@ extern "C" {
#define DRM_DISPLAY_MODE_LEN 32
#define DRM_PROP_NAME_LEN 32
#define DRM_MODE_TYPE_BUILTIN (1<<0)
#define DRM_MODE_TYPE_CLOCK_C ((1<<1) | DRM_MODE_TYPE_BUILTIN)
#define DRM_MODE_TYPE_CRTC_C ((1<<2) | DRM_MODE_TYPE_BUILTIN)
#define DRM_MODE_TYPE_BUILTIN (1<<0) /* deprecated */
#define DRM_MODE_TYPE_CLOCK_C ((1<<1) | DRM_MODE_TYPE_BUILTIN) /* deprecated */
#define DRM_MODE_TYPE_CRTC_C ((1<<2) | DRM_MODE_TYPE_BUILTIN) /* deprecated */
#define DRM_MODE_TYPE_PREFERRED (1<<3)
#define DRM_MODE_TYPE_DEFAULT (1<<4)
#define DRM_MODE_TYPE_DEFAULT (1<<4) /* deprecated */
#define DRM_MODE_TYPE_USERDEF (1<<5)
#define DRM_MODE_TYPE_DRIVER (1<<6)
#define DRM_MODE_TYPE_ALL (DRM_MODE_TYPE_BUILTIN | \
DRM_MODE_TYPE_CLOCK_C | \
DRM_MODE_TYPE_CRTC_C | \
DRM_MODE_TYPE_PREFERRED | \
DRM_MODE_TYPE_DEFAULT | \
#define DRM_MODE_TYPE_ALL (DRM_MODE_TYPE_PREFERRED | \
DRM_MODE_TYPE_USERDEF | \
DRM_MODE_TYPE_DRIVER)