Hi!
Dne četrtek, 19. december 2019 ob 11:11:49 CET je Neil Armstrong napisal(a):
> From: Boris Brezillon <boris.brezil...@collabora.com>
>
> This way the drm_bridge_funcs interface is consistent with the rest of
> the subsystem.
>
> The only driver implementing those hooks (analogix DP) is patched too.
>
> Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
> ---
Reviewed by: Jernej Skrabec <jernej.skra...@siol.net>
Best regards,
Jernej
> Changes in v5:
> * None
>
> Changes in v4:
> * Rename func params into old_bridge_state
> * Add Laurent's Rb
>
> Changes in v3:
> * Old state clarification moved to a separate patch
>
> Changes in v2:
> * Pass the old bridge state
> ---
> .../drm/bridge/analogix/analogix_dp_core.c | 41 +++++++------
> drivers/gpu/drm/drm_bridge.c | 61 +++++++++++++++----
> include/drm/drm_bridge.h | 8 +--
> 3 files changed, 77 insertions(+), 33 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index
> 6effe532f820..6fab71985cd4 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> @@ -1289,19 +1289,21 @@ struct drm_crtc *analogix_dp_get_new_crtc(struct
> analogix_dp_device *dp, return conn_state->crtc;
> }
>
> -static void analogix_dp_bridge_atomic_pre_enable(struct drm_bridge *bridge,
> - struct
drm_atomic_state *state)
> +static void
> +analogix_dp_bridge_atomic_pre_enable(struct drm_bridge *bridge,
> + struct drm_bridge_state
*old_bridge_state)
> {
> + struct drm_atomic_state *old_state = old_bridge_state->base.state;
> struct analogix_dp_device *dp = bridge->driver_private;
> struct drm_crtc *crtc;
> struct drm_crtc_state *old_crtc_state;
> int ret;
>
> - crtc = analogix_dp_get_new_crtc(dp, state);
> + crtc = analogix_dp_get_new_crtc(dp, old_state);
> if (!crtc)
> return;
>
> - old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
> + old_crtc_state = drm_atomic_get_old_crtc_state(old_state, crtc);
> /* Don't touch the panel if we're coming back from PSR */
> if (old_crtc_state && old_crtc_state->self_refresh_active)
> return;
> @@ -1366,20 +1368,22 @@ static int analogix_dp_set_bridge(struct
> analogix_dp_device *dp) return ret;
> }
>
> -static void analogix_dp_bridge_atomic_enable(struct drm_bridge *bridge,
> - struct
drm_atomic_state *state)
> +static void
> +analogix_dp_bridge_atomic_enable(struct drm_bridge *bridge,
> + struct drm_bridge_state
*old_bridge_state)
> {
> + struct drm_atomic_state *old_state = old_bridge_state->base.state;
> struct analogix_dp_device *dp = bridge->driver_private;
> struct drm_crtc *crtc;
> struct drm_crtc_state *old_crtc_state;
> int timeout_loop = 0;
> int ret;
>
> - crtc = analogix_dp_get_new_crtc(dp, state);
> + crtc = analogix_dp_get_new_crtc(dp, old_state);
> if (!crtc)
> return;
>
> - old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
> + old_crtc_state = drm_atomic_get_old_crtc_state(old_state, crtc);
> /* Not a full enable, just disable PSR and continue */
> if (old_crtc_state && old_crtc_state->self_refresh_active) {
> ret = analogix_dp_disable_psr(dp);
> @@ -1440,18 +1444,20 @@ static void analogix_dp_bridge_disable(struct
> drm_bridge *bridge) dp->dpms_mode = DRM_MODE_DPMS_OFF;
> }
>
> -static void analogix_dp_bridge_atomic_disable(struct drm_bridge *bridge,
> - struct
drm_atomic_state *state)
> +static void
> +analogix_dp_bridge_atomic_disable(struct drm_bridge *bridge,
> + struct drm_bridge_state
*old_bridge_state)
> {
> + struct drm_atomic_state *old_state = old_bridge_state->base.state;
> struct analogix_dp_device *dp = bridge->driver_private;
> struct drm_crtc *crtc;
> struct drm_crtc_state *new_crtc_state = NULL;
>
> - crtc = analogix_dp_get_new_crtc(dp, state);
> + crtc = analogix_dp_get_new_crtc(dp, old_state);
> if (!crtc)
> goto out;
>
> - new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
> + new_crtc_state = drm_atomic_get_new_crtc_state(old_state, crtc);
> if (!new_crtc_state)
> goto out;
>
> @@ -1463,20 +1469,21 @@ static void analogix_dp_bridge_atomic_disable(struct
> drm_bridge *bridge, analogix_dp_bridge_disable(bridge);
> }
>
> -static
> -void analogix_dp_bridge_atomic_post_disable(struct drm_bridge *bridge,
> - struct
drm_atomic_state *state)
> +static void
> +analogix_dp_bridge_atomic_post_disable(struct drm_bridge *bridge,
> + struct drm_bridge_state
*old_bridge_state)
> {
> + struct drm_atomic_state *old_state = old_bridge_state->base.state;
> struct analogix_dp_device *dp = bridge->driver_private;
> struct drm_crtc *crtc;
> struct drm_crtc_state *new_crtc_state;
> int ret;
>
> - crtc = analogix_dp_get_new_crtc(dp, state);
> + crtc = analogix_dp_get_new_crtc(dp, old_state);
> if (!crtc)
> return;
>
> - new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
> + new_crtc_state = drm_atomic_get_new_crtc_state(old_state, crtc);
> if (!new_crtc_state || !new_crtc_state->self_refresh_active)
> return;
>
> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
> index a3921b45f044..6bdc4ab789c9 100644
> --- a/drivers/gpu/drm/drm_bridge.c
> +++ b/drivers/gpu/drm/drm_bridge.c
> @@ -465,10 +465,19 @@ void drm_atomic_bridge_chain_disable(struct drm_bridge
> *bridge,
>
> encoder = bridge->encoder;
> list_for_each_entry_reverse(iter, &encoder->bridge_chain,
chain_node) {
> - if (iter->funcs->atomic_disable)
> - iter->funcs->atomic_disable(iter,
old_state);
> - else if (iter->funcs->disable)
> + if (iter->funcs->atomic_disable) {
> + struct drm_bridge_state *old_bridge_state;
> +
> + old_bridge_state =
> +
drm_atomic_get_old_bridge_state(old_state,
> +
iter);
> + if (WARN_ON(!old_bridge_state))
> + return;
> +
> + iter->funcs->atomic_disable(iter,
old_bridge_state);
> + } else if (iter->funcs->disable) {
> iter->funcs->disable(iter);
> + }
>
> if (iter == bridge)
> break;
> @@ -499,10 +508,20 @@ void drm_atomic_bridge_chain_post_disable(struct
> drm_bridge *bridge,
>
> encoder = bridge->encoder;
> list_for_each_entry_from(bridge, &encoder->bridge_chain,
chain_node) {
> - if (bridge->funcs->atomic_post_disable)
> - bridge->funcs->atomic_post_disable(bridge,
old_state);
> - else if (bridge->funcs->post_disable)
> + if (bridge->funcs->atomic_post_disable) {
> + struct drm_bridge_state *old_bridge_state;
> +
> + old_bridge_state =
> +
drm_atomic_get_old_bridge_state(old_state,
> +
bridge);
> + if (WARN_ON(!old_bridge_state))
> + return;
> +
> + bridge->funcs->atomic_post_disable(bridge,
> +
old_bridge_state);
> + } else if (bridge->funcs->post_disable) {
> bridge->funcs->post_disable(bridge);
> + }
> }
> }
> EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable);
> @@ -531,10 +550,19 @@ void drm_atomic_bridge_chain_pre_enable(struct
> drm_bridge *bridge,
>
> encoder = bridge->encoder;
> list_for_each_entry_reverse(iter, &encoder->bridge_chain,
chain_node) {
> - if (iter->funcs->atomic_pre_enable)
> - iter->funcs->atomic_pre_enable(iter,
old_state);
> - else if (iter->funcs->pre_enable)
> + if (iter->funcs->atomic_pre_enable) {
> + struct drm_bridge_state *old_bridge_state;
> +
> + old_bridge_state =
> +
drm_atomic_get_old_bridge_state(old_state,
> +
iter);
> + if (WARN_ON(!old_bridge_state))
> + return;
> +
> + iter->funcs->atomic_pre_enable(iter,
old_bridge_state);
> + } else if (iter->funcs->pre_enable) {
> iter->funcs->pre_enable(iter);
> + }
>
> if (iter == bridge)
> break;
> @@ -564,10 +592,19 @@ void drm_atomic_bridge_chain_enable(struct drm_bridge
> *bridge,
>
> encoder = bridge->encoder;
> list_for_each_entry_from(bridge, &encoder->bridge_chain,
chain_node) {
> - if (bridge->funcs->atomic_enable)
> - bridge->funcs->atomic_enable(bridge,
old_state);
> - else if (bridge->funcs->enable)
> + if (bridge->funcs->atomic_enable) {
> + struct drm_bridge_state *old_bridge_state;
> +
> + old_bridge_state =
> +
drm_atomic_get_old_bridge_state(old_state,
> +
bridge);
> + if (WARN_ON(!old_bridge_state))
> + return;
> +
> + bridge->funcs->atomic_enable(bridge,
old_bridge_state);
> + } else if (bridge->funcs->enable) {
> bridge->funcs->enable(bridge);
> + }
> }
> }
> EXPORT_SYMBOL(drm_atomic_bridge_chain_enable);
> diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
> index 8a926c1a08db..0331e330635b 100644
> --- a/include/drm/drm_bridge.h
> +++ b/include/drm/drm_bridge.h
> @@ -282,7 +282,7 @@ struct drm_bridge_funcs {
> * The @atomic_pre_enable callback is optional.
> */
> void (*atomic_pre_enable)(struct drm_bridge *bridge,
> - struct drm_atomic_state
*old_state);
> + struct drm_bridge_state
*old_bridge_state);
>
> /**
> * @atomic_enable:
> @@ -307,7 +307,7 @@ struct drm_bridge_funcs {
> * The @atomic_enable callback is optional.
> */
> void (*atomic_enable)(struct drm_bridge *bridge,
> - struct drm_atomic_state *old_state);
> + struct drm_bridge_state
*old_bridge_state);
> /**
> * @atomic_disable:
> *
> @@ -330,7 +330,7 @@ struct drm_bridge_funcs {
> * The @atomic_disable callback is optional.
> */
> void (*atomic_disable)(struct drm_bridge *bridge,
> - struct drm_atomic_state *old_state);
> + struct drm_bridge_state
*old_bridge_state);
>
> /**
> * @atomic_post_disable:
> @@ -356,7 +356,7 @@ struct drm_bridge_funcs {
> * The @atomic_post_disable callback is optional.
> */
> void (*atomic_post_disable)(struct drm_bridge *bridge,
> - struct drm_atomic_state
*old_state);
> + struct drm_bridge_state
*old_bridge_state);
>
> /**
> * @atomic_duplicate_state:
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