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| author | Stefan Agner <stefan@agner.ch> | 2015-11-18 03:10:29 (GMT) |
|---|---|---|
| committer | Stefan Agner <stefan@agner.ch> | 2016-02-26 00:13:16 (GMT) |
| commit | 4bc390c6337b6c73e0b44895e0ade7212f2815bf (patch) | |
| tree | ee75b7bc82b570f8dba95791873f60b2a8cfd794 /drivers/gpu/drm/panel | |
| parent | 69855819c7683c88e7f136f98b790392ebf9fe88 (diff) | |
| download | linux-4bc390c6337b6c73e0b44895e0ade7212f2815bf.tar.xz | |
drm/fsl-dcu: use mode flags for hsync/vsync polarity
The current default configuration is as follows:
- Invert VSYNC signal (active LOW)
- Invert HSYNC signal (active LOW)
The mode flags allow to specify the required polarity per
mode. Furthermore, none of the current driver settings is
actually a standard polarity.
This patch applies the current driver default polarities as
explicit flags to the display which has been introduced with
the driver (NEC WQVGA "nec,nl4827hc19-05b"). The driver now
also parses the flags field and applies the configuration
accordingly, by using the following values as standard
polarities: (e.g. when no flags are specified):
- VSYNC signal not inverted (active HIGH)
- HSYNC signal not inverted (active HIGH)
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Diffstat (limited to 'drivers/gpu/drm/panel')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-simple.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index f88a631..2164c99 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -1016,6 +1016,7 @@ static const struct drm_display_mode nec_nl4827hc19_05b_mode = { .vsync_end = 272 + 2 + 4, .vtotal = 272 + 2 + 4 + 2, .vrefresh = 74, + .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, }; static const struct panel_desc nec_nl4827hc19_05b = { |