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drm/atomic-helper: Add an analog TV atomic_check implementation 

The analog TV connector drivers share some atomic_check logic, and the new
TV standard property have created some boilerplate that can be shared
across drivers too.

Let's create an atomic_check helper for those use cases.

Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Acked-in-principle-or-something-like-that-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20220728-rpi-analog-tv-properties-v10-14-256dad125326@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Maxime Ripard 2022-11-17 10:28:57 +01:00 committed by Junxiao Chang
parent 4f81908342
commit f1f4067d75
2 changed files with 52 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/drm_atomic_state_helper.c
View File

@ -556,6 +556,55 @@ void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector)
}
EXPORT_SYMBOL(drm_atomic_helper_connector_tv_reset);
/**
* @drm_atomic_helper_connector_tv_check: Validate an analog TV connector state
* @connector: DRM Connector
* @state: the DRM State object
*
* Checks the state object to see if the requested state is valid for an
* analog TV connector.
*
* Returns:
* Zero for success, a negative error code on error.
*/
int drm_atomic_helper_connector_tv_check(struct drm_connector *connector,
struct drm_atomic_state *state)
{
struct drm_connector_state *old_conn_state =
drm_atomic_get_old_connector_state(state, connector);
struct drm_connector_state *new_conn_state =
drm_atomic_get_new_connector_state(state, connector);
struct drm_crtc_state *crtc_state;
struct drm_crtc *crtc;
crtc = new_conn_state->crtc;
if (!crtc)
return 0;
crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
if (!crtc_state)
return -EINVAL;
if (old_conn_state->tv.mode != new_conn_state->tv.mode)
crtc_state->mode_changed = true;
if (old_conn_state->tv.margins.left != new_conn_state->tv.margins.left ||
old_conn_state->tv.margins.right != new_conn_state->tv.margins.right ||
old_conn_state->tv.margins.top != new_conn_state->tv.margins.top ||
old_conn_state->tv.margins.bottom != new_conn_state->tv.margins.bottom ||
old_conn_state->tv.mode != new_conn_state->tv.mode ||
old_conn_state->tv.brightness != new_conn_state->tv.brightness ||
old_conn_state->tv.contrast != new_conn_state->tv.contrast ||
old_conn_state->tv.flicker_reduction != new_conn_state->tv.flicker_reduction ||
old_conn_state->tv.overscan != new_conn_state->tv.overscan ||
old_conn_state->tv.saturation != new_conn_state->tv.saturation ||
old_conn_state->tv.hue != new_conn_state->tv.hue)
crtc_state->connectors_changed = true;
return 0;
}
EXPORT_SYMBOL(drm_atomic_helper_connector_tv_check);
/**
* __drm_atomic_helper_connector_duplicate_state - copy atomic connector state
* @connector: connector object

3
include/drm/drm_atomic_state_helper.h
View File

@ -26,6 +26,7 @@
#include <linux/types.h>
struct drm_atomic_state;
struct drm_bridge;
struct drm_bridge_state;
struct drm_crtc;
@ -71,6 +72,8 @@ void __drm_atomic_helper_connector_reset(struct drm_connector *connector,
struct drm_connector_state *conn_state);
void drm_atomic_helper_connector_reset(struct drm_connector *connector);
void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector);
int drm_atomic_helper_connector_tv_check(struct drm_connector *connector,
struct drm_atomic_state *state);
void drm_atomic_helper_connector_tv_margins_reset(struct drm_connector *connector);
void
__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,