diff options
| author | Herve Codina <herve.codina@bootlin.com> | 2025-02-10 14:26:17 +0100 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2025-02-13 16:17:46 +0100 |
| commit | ab83b7f6a0c10b5e040ae60bc6789ff89dd9488c (patch) | |
| tree | bce18fc5d098eb20fb3c1449925e2c7830615e56 | |
| parent | feb7ef6e2b1f3ac1fc98652205f3be91e51c4da2 (diff) | |
drm/atomic-helper: Introduce drm_atomic_helper_reset_crtc()
drm_atomic_helper_reset_crtc() allows to reset the CRTC active outputs.
This resets all active components available between the CRTC and
connectors.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250210132620.42263-3-herve.codina@bootlin.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 41 | ||||
| -rw-r--r-- | include/drm/drm_atomic_helper.h | 2 |
2 files changed, 43 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 26bf2465cee7..d6a206fc9ddd 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -3401,6 +3401,47 @@ free: EXPORT_SYMBOL(drm_atomic_helper_disable_all); /** + * drm_atomic_helper_reset_crtc - reset the active outputs of a CRTC + * @crtc: DRM CRTC + * @ctx: lock acquisition context + * + * Reset the active outputs by indicating that connectors have changed. + * This implies a reset of all active components available between the CRTC and + * connectors. + * + * Returns: + * 0 on success or a negative error code on failure. + */ +int drm_atomic_helper_reset_crtc(struct drm_crtc *crtc, + struct drm_modeset_acquire_ctx *ctx) +{ + struct drm_atomic_state *state; + struct drm_crtc_state *crtc_state; + int ret; + + state = drm_atomic_state_alloc(crtc->dev); + if (!state) + return -ENOMEM; + + state->acquire_ctx = ctx; + + crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) { + ret = PTR_ERR(crtc_state); + goto out; + } + + crtc_state->connectors_changed = true; + + ret = drm_atomic_commit(state); +out: + drm_atomic_state_put(state); + + return ret; +} +EXPORT_SYMBOL(drm_atomic_helper_reset_crtc); + +/** * drm_atomic_helper_shutdown - shutdown all CRTC * @dev: DRM device * diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h index 9aa0a05aa072..53382fe93537 100644 --- a/include/drm/drm_atomic_helper.h +++ b/include/drm/drm_atomic_helper.h @@ -139,6 +139,8 @@ int drm_atomic_helper_set_config(struct drm_mode_set *set, int drm_atomic_helper_disable_all(struct drm_device *dev, struct drm_modeset_acquire_ctx *ctx); +int drm_atomic_helper_reset_crtc(struct drm_crtc *crtc, + struct drm_modeset_acquire_ctx *ctx); void drm_atomic_helper_shutdown(struct drm_device *dev); struct drm_atomic_state * drm_atomic_helper_duplicate_state(struct drm_device *dev, |