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drm: Add and handle new aspect ratios in DRM layer 

HDMI 2.0/CEA-861-F introduces two new aspect ratios:
- 64:27
- 256:135

This patch:
-  Adds new DRM flags for to represent these new aspect ratios.
-  Adds new cases to handle these aspect ratios while converting
from user->kernel mode or vise versa.

V2: Rebase
V3: Align macro for DRM_MODE_PICTURE_ASPECT_256_135 (Jim Bride)
V4: Added r-b from Jose.

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1476705880-15600-5-git-send-email-shashank.sharma@intel.com
This commit is contained in:
Shashank Sharma 2016-10-17 17:34:40 +05:30 committed by Daniel Vetter
parent a6e78b3e14
commit a68362fe3e
2 changed files with 18 additions and 0 deletions
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12
drivers/gpu/drm/drm_modes.c
View File

@ -1509,6 +1509,12 @@ void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,
case HDMI_PICTURE_ASPECT_16_9:
out->flags |= DRM_MODE_FLAG_PIC_AR_16_9;
break;
case HDMI_PICTURE_ASPECT_64_27:
out->flags |= DRM_MODE_FLAG_PIC_AR_64_27;
break;
case DRM_MODE_PICTURE_ASPECT_256_135:
out->flags |= DRM_MODE_FLAG_PIC_AR_256_135;
break;
case HDMI_PICTURE_ASPECT_RESERVED:
default:
out->flags |= DRM_MODE_FLAG_PIC_AR_NONE;
@ -1570,6 +1576,12 @@ int drm_mode_convert_umode(struct drm_display_mode *out,
case DRM_MODE_FLAG_PIC_AR_16_9:
out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_16_9;
break;
case DRM_MODE_FLAG_PIC_AR_64_27:
out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_64_27;
break;
case DRM_MODE_FLAG_PIC_AR_256_135:
out->picture_aspect_ratio |= HDMI_PICTURE_ASPECT_256_135;
break;
default:
out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
break;

6
include/uapi/drm/drm_mode.h
View File

@ -81,6 +81,8 @@ extern "C" {
#define DRM_MODE_PICTURE_ASPECT_NONE 0
#define DRM_MODE_PICTURE_ASPECT_4_3 1
#define DRM_MODE_PICTURE_ASPECT_16_9 2
#define DRM_MODE_PICTURE_ASPECT_64_27 3
#define DRM_MODE_PICTURE_ASPECT_256_135 4
/* Aspect ratio flag bitmask (4 bits 22:19) */
#define DRM_MODE_FLAG_PIC_AR_MASK (0x0F<<19)
@ -90,6 +92,10 @@ extern "C" {
(DRM_MODE_PICTURE_ASPECT_4_3<<19)
#define DRM_MODE_FLAG_PIC_AR_16_9 \
(DRM_MODE_PICTURE_ASPECT_16_9<<19)
#define DRM_MODE_FLAG_PIC_AR_64_27 \
(DRM_MODE_PICTURE_ASPECT_64_27<<19)
#define DRM_MODE_FLAG_PIC_AR_256_135 \
(DRM_MODE_PICTURE_ASPECT_256_135<<19)
/* DPMS flags */
/* bit compatible with the xorg definitions. */