diff options
Diffstat (limited to 'drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c index 032dc0a9638f..6f353c4886e4 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mixer.c @@ -16,6 +16,61 @@ #include "mdp5_kms.h" +struct mdp5_hw_mixer *mdp5_mixer_assign(struct drm_atomic_state *s, + struct drm_crtc *crtc, uint32_t caps) +{ + struct msm_drm_private *priv = s->dev->dev_private; + struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms)); + struct mdp5_state *state = mdp5_get_state(s); + struct mdp5_hw_mixer_state *new_state; + struct mdp5_hw_mixer *mixer = NULL; + int i; + + if (IS_ERR(state)) + return ERR_CAST(state); + + new_state = &state->hwmixer; + + for (i = 0; i < mdp5_kms->num_hwmixers; i++) { + struct mdp5_hw_mixer *cur = mdp5_kms->hwmixers[i]; + + /* skip if already in-use */ + if (new_state->hwmixer_to_crtc[cur->idx]) + continue; + + /* skip if doesn't support some required caps: */ + if (caps & ~cur->caps) + continue; + + if (!mixer) + mixer = cur; + } + + if (!mixer) + return ERR_PTR(-ENOMEM); + + new_state->hwmixer_to_crtc[mixer->idx] = crtc; + + return mixer; +} + +void mdp5_mixer_release(struct drm_atomic_state *s, struct mdp5_hw_mixer *mixer) +{ + struct mdp5_state *state = mdp5_get_state(s); + struct mdp5_hw_mixer_state *new_state = &state->hwmixer; + + if (!mixer) + return; + + if (WARN_ON(!new_state->hwmixer_to_crtc[mixer->idx])) + return; + + DBG("%s: release from crtc %s", mixer->name, + new_state->hwmixer_to_crtc[mixer->idx]->name); + + new_state->hwmixer_to_crtc[mixer->idx] = NULL; +} + void mdp5_mixer_destroy(struct mdp5_hw_mixer *mixer) { kfree(mixer); |