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Commit a68362fe authored by Shashank Sharma's avatar Shashank Sharma Committed by Daniel Vetter
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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: default avatarShashank Sharma <shashank.sharma@intel.com>
Reviewed-by: default avatarSean Paul <seanpaul@chromium.org>
Reviewed-by: default avatarJose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1476705880-15600-5-git-send-email-shashank.sharma@intel.com
parent a6e78b3e

drivers/gpu/drm/drm_modes.c

+12 −0
Original line number Diff line number Diff line
@@ -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;

include/uapi/drm/drm_mode.h

+6 −0
Original line number Diff line number Diff line
@@ -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. */