diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-03-25 21:06:57 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-04-02 10:40:51 +0200 |
| commit | 225a8d0bd93eb87fe49947069075260031bad8af (patch) | |
| tree | cefc8efa142d2913bb47a2bbebb85b750b322e86 /drivers/gpu/drm/ast/ast_mode.c | |
| parent | 90170b186ff552ec080ede18b7c3c2aeb6d5b993 (diff) | |
drm/ast: Implement polling for VGA and SIL164 connectors
Implement polling for VGA and SIL164 connectors. Set the flag
DRM_CONNECTOR_POLL_DISCONNECT for each to detect the removal of the
monitor cable. Implement struct drm_connector_helper_funcs.detect_ctx
for each type of connector by testing for EDID data.
The helper drm_connector_helper_detect_ctx() implements .detect_ctx()
on top of the connector's DDC channel. The function can be used by
other drivers as companion to drm_connector_helper_get_modes().
v6:
- change helper name to drm_connector_helper_detec_from_ddc()
(Maxime, Sui)
v5:
- share implementation in drm_connector_helper_detect_ctx() (Maxime)
- test for DDC presence with drm_probe_ddc() (Maxime, Jani)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-13-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast/ast_mode.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_mode.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 71cc681d6188..b4e1c812520c 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -1346,6 +1346,7 @@ static int ast_crtc_init(struct drm_device *dev) static const struct drm_connector_helper_funcs ast_vga_connector_helper_funcs = { .get_modes = drm_connector_helper_get_modes, + .detect_ctx = drm_connector_helper_detect_from_ddc, }; static const struct drm_connector_funcs ast_vga_connector_funcs = { @@ -1379,7 +1380,7 @@ static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector * connector->interlace_allowed = 0; connector->doublescan_allowed = 0; - connector->polled = DRM_CONNECTOR_POLL_CONNECT; + connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT; return 0; } @@ -1414,6 +1415,7 @@ static int ast_vga_output_init(struct ast_device *ast) static const struct drm_connector_helper_funcs ast_sil164_connector_helper_funcs = { .get_modes = drm_connector_helper_get_modes, + .detect_ctx = drm_connector_helper_detect_from_ddc, }; static const struct drm_connector_funcs ast_sil164_connector_funcs = { @@ -1447,7 +1449,7 @@ static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connecto connector->interlace_allowed = 0; connector->doublescan_allowed = 0; - connector->polled = DRM_CONNECTOR_POLL_CONNECT; + connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT; return 0; } |