On 10/13/2017 03:29 PM, sunpeng.li at amd.com wrote:
> From: "Leo (Sunpeng) Li" <sunpeng.li at amd.com>
>
> Use the correct for_each_new/old_* iterators instead of for_each_*
>
> The following functions were considered:
>
> amdgpu_dm_find_first_crtc_matching_connector: use for_each_new
> - Old from_state_var flag was always choosing the new state
>
> amdgpu_dm_display_resume: use for_each_new
> - drm_atomic_helper_duplicate_state is called during suspend to
> cache the state
> - It sets 'state' within the state triplet to 'new_state'
>
> amdgpu_dm_commit_planes: use for_each_old
> - Called after the state was swapped (via atomic commit tail)
>
> amdgpu_dm_atomic_commit: use for_each_new
> - Called before the state is swapped
>
> amdgpu_dm_atomic_commit_tail: use for_each_old
> - Called after the state was swapped
>
> dm_update_crtcs_state: use for_each_new
> - Called before the state is swapped (via atomic check)
>
> amdgpu_dm_atomic_check: use for_each_new
> - Called before the state is swapped
>
> v2: Split out typo fixes to a new patch.
>
> v3: Say "functions considered" instead of "affected functions". The
> latter implies that changes are made to each.
>
> Signed-off-by: Leo (Sunpeng) Li <sunpeng.li at amd.com>
> ---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 32 ++++++++---------------
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 3 +--
> 2 files changed, 12 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 9bfe1f9..cc024ab 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -570,23 +570,15 @@ static int dm_suspend(void *handle)
>
> struct amdgpu_dm_connector *amdgpu_dm_find_first_crct_matching_connector(
> struct drm_atomic_state *state,
> - struct drm_crtc *crtc,
> - bool from_state_var)
> + struct drm_crtc *crtc)
> {
> uint32_t i;
> struct drm_connector_state *conn_state;
> struct drm_connector *connector;
> struct drm_crtc *crtc_from_state;
>
> - for_each_new_connector_in_state(
> - state,
> - connector,
> - conn_state,
> - i) {
> - crtc_from_state =
> - from_state_var ?
> - conn_state->crtc :
> - connector->state->crtc;
> + for_each_new_connector_in_state(state, connector, conn_state, i) {
> + crtc_from_state = conn_state->crtc;
>
> if (crtc_from_state == crtc)
> return to_amdgpu_dm_connector(connector);
> @@ -3890,7 +3882,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
> unsigned long flags;
>
> /* update planes when needed */
> - for_each_new_plane_in_state(state, plane, old_plane_state, i) {
> + for_each_old_plane_in_state(state, plane, old_plane_state, i) {
> struct drm_plane_state *plane_state = plane->state;
> struct drm_crtc *crtc = plane_state->crtc;
> struct drm_framebuffer *fb = plane_state->fb;
> @@ -4024,7 +4016,7 @@ void amdgpu_dm_atomic_commit_tail(
> dm_state = to_dm_atomic_state(state);
>
> /* update changed items */
> - for_each_new_crtc_in_state(state, crtc, old_crtc_state, i) {
> + for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) {
Better just use for_each_new_old here, so you can get both old and new
from the iterator.
> struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
> struct drm_crtc_state *new_state = crtc->state;
>
> @@ -4113,11 +4105,9 @@ void amdgpu_dm_atomic_commit_tail(
> new_acrtc_state = to_dm_crtc_state(new_crtcs[i]->base.state);
>
> new_stream = new_acrtc_state->stream;
> - aconnector =
> - amdgpu_dm_find_first_crct_matching_connector(
> + aconnector = amdgpu_dm_find_first_crct_matching_connector(
> state,
> - &new_crtcs[i]->base,
> - false);
> + &new_crtcs[i]->base);
> if (!aconnector) {
> DRM_DEBUG_DRIVER("Atomic commit: Failed to find connector for acrtc id:%d "
> "skipping freesync init\n",
> @@ -4151,7 +4141,7 @@ void amdgpu_dm_atomic_commit_tail(
> }
>
> /* Handle scaling and undersacn changes*/
> - for_each_new_connector_in_state(state, connector, old_conn_state, i) {
> + for_each_old_connector_in_state(state, connector, old_conn_state, i) {
> struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
> struct dm_connector_state *con_new_state =
> to_dm_connector_state(aconnector->base.state);
> @@ -4205,7 +4195,7 @@ void amdgpu_dm_atomic_commit_tail(
> }
>
> /* update planes when needed per crtc*/
> - for_each_new_crtc_in_state(state, pcrtc, old_crtc_state, j) {
> + for_each_old_crtc_in_state(state, pcrtc, old_crtc_state, j) {
> new_acrtc_state = to_dm_crtc_state(pcrtc->state);
Why did you switch to for_each_old iterator here ? if you use the
for_each_new
iterator you can get rid of new_acrtc_state =
to_dm_crtc_state(pcrtc->state);
and just use the iterator's state
>
> if (new_acrtc_state->stream)
> @@ -4218,7 +4208,7 @@ void amdgpu_dm_atomic_commit_tail(
> * mark consumed event for drm_atomic_helper_commit_hw_done
> */
> spin_lock_irqsave(&adev->ddev->event_lock, flags);
> - for_each_new_crtc_in_state(state, crtc, old_crtc_state, i) {
> + for_each_old_crtc_in_state(state, crtc, old_crtc_state, i) {
> struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
Same as above
Thanks,
Andrey
>
> if (acrtc->base.state->event)
> @@ -4402,7 +4392,7 @@ static int dm_update_crtcs_state(
> new_acrtc_state = to_dm_crtc_state(crtc_state);
> acrtc = to_amdgpu_crtc(crtc);
>
> - aconnector = amdgpu_dm_find_first_crct_matching_connector(state, crtc, true);
> + aconnector = amdgpu_dm_find_first_crct_matching_connector(state, crtc);
>
> /* TODO This hack should go away */
> if (aconnector) {
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> index 630e6cd..1c55a0b 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> @@ -228,8 +228,7 @@ void amdgpu_dm_update_connector_after_detect(
>
> struct amdgpu_dm_connector *amdgpu_dm_find_first_crct_matching_connector(
> struct drm_atomic_state *state,
> - struct drm_crtc *crtc,
> - bool from_state_var);
> + struct drm_crtc *crtc);
>
>
> struct amdgpu_framebuffer;
