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Date: Fri, 29 Jul 2022 18:34:57 +0200 From: Maxime Ripard <maxime@...no.tech> To: Jernej Skrabec <jernej.skrabec@...il.com>, Martin Blumenstingl <martin.blumenstingl@...glemail.com>, Chen-Yu Tsai <wens@...e.org>, Philipp Zabel <p.zabel@...gutronix.de>, Jerome Brunet <jbrunet@...libre.com>, Samuel Holland <samuel@...lland.org>, Thomas Zimmermann <tzimmermann@...e.de>, Daniel Vetter <daniel@...ll.ch>, Emma Anholt <emma@...olt.net>, David Airlie <airlied@...ux.ie>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Noralf Trønnes <noralf@...nnes.org>, Kevin Hilman <khilman@...libre.com>, Neil Armstrong <narmstrong@...libre.com>, Maxime Ripard <mripard@...nel.org> Cc: Maxime Ripard <maxime@...no.tech>, linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org, Phil Elwell <phil@...pberrypi.com>, Mateusz Kwiatkowski <kfyatek+publicgit@...il.com>, linux-arm-kernel@...ts.infradead.org, Geert Uytterhoeven <geert@...ux-m68k.org>, Dave Stevenson <dave.stevenson@...pberrypi.com>, linux-amlogic@...ts.infradead.org, dri-devel@...ts.freedesktop.org, Dom Cobley <dom@...pberrypi.com> Subject: [PATCH v1 14/35] 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 a bunch of new constraints that needs to be shared across drivers too. Let's create an atomic_check helper for those use cases. Signed-off-by: Maxime Ripard <maxime@...no.tech> diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 6d14cb0c64b1..fce5569bd66a 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -552,6 +552,93 @@ 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); + const struct drm_display_mode *mode; + 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; + + switch (new_conn_state->tv.norm) { + case DRM_MODE_TV_NORM_NTSC_443: + fallthrough; + case DRM_MODE_TV_NORM_NTSC_J: + fallthrough; + case DRM_MODE_TV_NORM_NTSC_M: + fallthrough; + case DRM_MODE_TV_NORM_PAL_M: + mode = &drm_mode_480i; + break; + + case DRM_MODE_TV_NORM_PAL_60: + fallthrough; + case DRM_MODE_TV_NORM_PAL_B: + fallthrough; + case DRM_MODE_TV_NORM_PAL_D: + fallthrough; + case DRM_MODE_TV_NORM_PAL_G: + fallthrough; + case DRM_MODE_TV_NORM_PAL_H: + fallthrough; + case DRM_MODE_TV_NORM_PAL_I: + fallthrough; + case DRM_MODE_TV_NORM_PAL_N: + fallthrough; + case DRM_MODE_TV_NORM_PAL_NC: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_60: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_B: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_D: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_G: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_K: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_K1: + fallthrough; + case DRM_MODE_TV_NORM_SECAM_L: + mode = &drm_mode_576i; + break; + + default: + return -EINVAL; + } + + if (!drm_mode_equal(mode, &crtc_state->mode)) + return -EINVAL; + + if (old_conn_state->tv.norm != new_conn_state->tv.norm) + crtc_state->mode_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 diff --git a/include/drm/drm_atomic_state_helper.h b/include/drm/drm_atomic_state_helper.h index c8fbce795ee7..b9740edb2658 100644 --- a/include/drm/drm_atomic_state_helper.h +++ b/include/drm/drm_atomic_state_helper.h @@ -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, -- b4 0.10.0-dev-49460
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