diff mbox

[RESEND] drm/panel: simple-panel: set appropriate mode type

Message ID 1460737413-29799-1-git-send-email-nicolas.ferre@atmel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Nicolas Ferre April 15, 2016, 4:23 p.m. UTC
From: Boris Brezillon <boris.brezillon@free-electrons.com>

All modes exposed by simple panels should be tagged as driver defined
modes.
Moreover, if a panel supports only one mode, this mode is obviously the
preferred one.

Doing this also fix a problem occurring when a 'video=' parameter is passed
on the kernel cmdline. In some cases the user provided mode is preferred
over the simple panel ones, which might result in unpredictable behavior.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
---
 drivers/gpu/drm/panel/panel-simple.c | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Thierry Reding April 18, 2016, 7:05 a.m. UTC | #1
On Fri, Apr 15, 2016 at 06:23:33PM +0200, Nicolas Ferre wrote:
> From: Boris Brezillon <boris.brezillon@free-electrons.com>
> 
> All modes exposed by simple panels should be tagged as driver defined
> modes.
> Moreover, if a panel supports only one mode, this mode is obviously the
> preferred one.
> 
> Doing this also fix a problem occurring when a 'video=' parameter is passed
> on the kernel cmdline. In some cases the user provided mode is preferred
> over the simple panel ones, which might result in unpredictable behavior.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
> Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
> Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
> ---
>  drivers/gpu/drm/panel/panel-simple.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Applied, thanks.

Thierry
diff mbox

Patch

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index ceb20486dacf..45b924ebed57 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -115,6 +115,10 @@  static int panel_simple_get_fixed_modes(struct panel_simple *panel)
 			continue;
 		}
 
+		mode->type |= DRM_MODE_TYPE_DRIVER;
+		if (panel->desc->num_modes == 1)
+			mode->type |= DRM_MODE_TYPE_PREFERRED;
+
 		drm_display_mode_from_videomode(&vm, mode);
 		drm_mode_set_name(mode);
 
@@ -132,6 +136,10 @@  static int panel_simple_get_fixed_modes(struct panel_simple *panel)
 			continue;
 		}
 
+		mode->type |= DRM_MODE_TYPE_DRIVER;
+		if (panel->desc->num_modes == 1)
+			mode->type |= DRM_MODE_TYPE_PREFERRED;
+
 		drm_mode_set_name(mode);
 
 		drm_mode_probed_add(connector, mode);