From: aknautiy <ankit.k.nautiyal@xxxxxxxxx>
A new drm client cap is required to enable user-space to advertise
if it supports modes with aspect-ratio. Based on this cap value, the
kernel will take a call on exposing the aspect ratio information in
modes or not.
This patch adds the client cap for aspect-ratio.
Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Shashank Sharma <shashank.sharma@xxxxxxxxx>
Signed-off-by: aknautiy <ankit.k.nautiyal@xxxxxxxxx>
---
drivers/gpu/drm/drm_ioctl.c | 5 +++++
include/drm/drm_file.h | 7 +++++++
include/uapi/drm/drm.h | 7 +++++++
3 files changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 4aafe48..e092550 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -325,6 +325,11 @@ drm_setclientcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
file_priv->atomic = req->value;
file_priv->universal_planes = req->value;
break;
+ case DRM_CLIENT_CAP_ASPECT_RATIO:
+ if (req->value > 1)
+ return -EINVAL;
+ file_priv->aspect_ratio_allowed = req->value;
+ break;
default:
return -EINVAL;
}
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 0e0c868..6e0e435 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -182,6 +182,13 @@ struct drm_file {
unsigned atomic:1;
/**
+ * @aspect_ratio_allowed:
+ *
+ * True if client has asked to expose the aspect-ratio flags with mode.
+ */
+ unsigned aspect_ratio_allowed:1;
+
+ /**
* @is_master:
*
* This client is the creator of @master. Protected by struct
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 6fdff59..fe5f531 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -680,6 +680,13 @@ struct drm_get_cap {
*/
#define DRM_CLIENT_CAP_ATOMIC 3
+/**
+ * DRM_CLIENT_CAP_ASPECT_RATIO
+ *
+ * If set to 1, the DRM core will expose aspect ratio flags to userspace.
+ */
+#define DRM_CLIENT_CAP_ASPECT_RATIO 4
+
/** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
struct drm_set_client_cap {
__u64 capability;
--
2.7.4
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