diff options
| author | Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> | 2024-02-16 18:48:55 +0000 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2024-06-18 11:13:30 +0200 |
| commit | 41474d25bec56900e3a018907784b0abfe5a6a9e (patch) | |
| tree | 5bb5f99dea1c268b54c59c1ea001a037abdd1995 /drivers/gpu/drm | |
| parent | b2cb6011bcaf5bba08b55f20e3eea9cdd415ec9d (diff) | |
drm: Add DRM_MODE_TV_MODE_MONOCHROME
Add this as a value for enum_drm_connector_tv_mode, represented
by the string "Mono", to generate video with no colour encoding
or bursts. Define it to have no pedestal (since only NTSC-M calls
for a pedestal).
Change default mode creation to acommodate the new tv_mode value
which comprises both 525-line and 625-line formats.
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240216184857.245372-2-dave.stevenson@raspberrypi.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_connector.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_probe_helper.c | 5 |
3 files changed, 14 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 3d73a981004c..ab6ab7ff7ea8 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1087,6 +1087,7 @@ static const struct drm_prop_enum_list drm_tv_mode_enum_list[] = { { DRM_MODE_TV_MODE_PAL_M, "PAL-M" }, { DRM_MODE_TV_MODE_PAL_N, "PAL-N" }, { DRM_MODE_TV_MODE_SECAM, "SECAM" }, + { DRM_MODE_TV_MODE_MONOCHROME, "Mono" }, }; DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list) @@ -1858,6 +1859,12 @@ EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property); * TV Mode is CCIR System B (aka 625-lines) together with * the SECAM Color Encoding. * + * Mono: + * + * Use timings appropriate to the DRM mode, including + * equalizing pulses for a 525-line or 625-line mode, + * with no pedestal or color encoding. + * * Drivers can set up this property by calling * drm_mode_create_tv_properties(). */ diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 2d8b0371619d..1a0890083aee 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -531,7 +531,8 @@ static int fill_analog_mode(struct drm_device *dev, * @interlace: whether to compute an interlaced mode * * This function creates a struct drm_display_mode instance suited for - * an analog TV output, for one of the usual analog TV mode. + * an analog TV output, for one of the usual analog TV modes. Where + * this is DRM_MODE_TV_MODE_MONOCHROME, a 625-line mode will be created. * * Note that @hdisplay is larger than the usual constraints for the PAL * and NTSC timings, and we'll choose to ignore most timings constraints @@ -569,6 +570,8 @@ struct drm_display_mode *drm_analog_tv_mode(struct drm_device *dev, case DRM_MODE_TV_MODE_PAL_N: fallthrough; case DRM_MODE_TV_MODE_SECAM: + fallthrough; + case DRM_MODE_TV_MODE_MONOCHROME: analog = DRM_MODE_ANALOG_PAL; break; diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index 249c8c2cb319..bb49d552e671 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -1259,8 +1259,9 @@ int drm_connector_helper_tv_get_modes(struct drm_connector *connector) for (i = 0; i < tv_mode_property->num_values; i++) supported_tv_modes |= BIT(tv_mode_property->values[i]); - if ((supported_tv_modes & ntsc_modes) && - (supported_tv_modes & pal_modes)) { + if (((supported_tv_modes & ntsc_modes) && + (supported_tv_modes & pal_modes)) || + (supported_tv_modes & BIT(DRM_MODE_TV_MODE_MONOCHROME))) { uint64_t default_mode; if (drm_object_property_get_default_value(&connector->base, |