Removes impossible checks in dpu_crtc.c.
Variable assignments are moved up to be initializations where
possible. Some variables are no longer used, these are removed.
Signed-off-by: Bruce Wang <bzwang@xxxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 170 +++--------------------
1 file changed, 23 insertions(+), 147 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index a8f2dd7a37c7..a9adb16eac6f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -55,19 +55,8 @@ static inline int _dpu_crtc_get_mixer_width(struct dpu_crtc_state *cstate,
static inline struct dpu_kms *_dpu_crtc_get_kms(struct drm_crtc *crtc)
{
- struct msm_drm_private *priv;
-
- if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
- DPU_ERROR("invalid crtc\n");
- return NULL;
- }
- priv = crtc->dev->dev_private;
- if (!priv || !priv->kms) {
- DPU_ERROR("invalid kms\n");
- return NULL;
- }
-
- return to_dpu_kms(priv->kms);
+ return to_dpu_kms(((struct msm_drm_private *) crtc->dev->dev_private)
+ ->kms);
}
static inline int _dpu_crtc_power_enable(struct dpu_crtc *dpu_crtc, bool enable)
@@ -177,28 +166,17 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
struct drm_plane *plane;
struct drm_framebuffer *fb;
struct drm_plane_state *state;
- struct dpu_crtc_state *cstate;
+ struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
struct dpu_plane_state *pstate = NULL;
struct dpu_format *format;
- struct dpu_hw_ctl *ctl;
- struct dpu_hw_mixer *lm;
- struct dpu_hw_stage_cfg *stage_cfg;
+ struct dpu_hw_ctl *ctl = mixer->lm_ctl;
+ struct dpu_hw_stage_cfg *stage_cfg = &dpu_crtc->stage_cfg;
u32 flush_mask;
uint32_t stage_idx, lm_idx;
int zpos_cnt[DPU_STAGE_MAX + 1] = { 0 };
bool bg_alpha_enable = false;
- if (!dpu_crtc || !mixer) {
- DPU_ERROR("invalid dpu_crtc or mixer\n");
- return;
- }
-
- ctl = mixer->lm_ctl;
- lm = mixer->hw_lm;
- stage_cfg = &dpu_crtc->stage_cfg;
- cstate = to_dpu_crtc_state(crtc->state);
-
drm_atomic_crtc_for_each_plane(plane, crtc) {
state = plane->state;
if (!state)
@@ -217,10 +195,6 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
state->fb ? state->fb->base.id : -1);
format = to_dpu_format(msm_framebuffer_format(pstate->base.fb));
- if (!format) {
- DPU_ERROR("invalid format\n");
- return;
- }
if (pstate->stage == DPU_STAGE_BASE && format->alpha_enable)
bg_alpha_enable = true;
@@ -261,21 +235,13 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
*/
static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
{
- struct dpu_crtc *dpu_crtc;
- struct dpu_crtc_state *cstate;
- struct dpu_crtc_mixer *mixer;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
+ struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
+ struct dpu_crtc_mixer *mixer = cstate->mixers;
struct dpu_hw_ctl *ctl;
struct dpu_hw_mixer *lm;
-
int i;
- if (!crtc)
- return;
-
- dpu_crtc = to_dpu_crtc(crtc);
- cstate = to_dpu_crtc_state(crtc->state);
- mixer = cstate->mixers;
-
DPU_DEBUG("%s\n", dpu_crtc->name);
for (i = 0; i < cstate->num_mixers; i++) {
@@ -377,34 +343,13 @@ static void dpu_crtc_vblank_cb(void *data)
static void dpu_crtc_frame_event_work(struct kthread_work *work)
{
- struct msm_drm_private *priv;
- struct dpu_crtc_frame_event *fevent;
- struct drm_crtc *crtc;
- struct dpu_crtc *dpu_crtc;
- struct dpu_kms *dpu_kms;
+ struct dpu_crtc_frame_event *fevent = container_of(work,
+ struct dpu_crtc_frame_event, work);
+ struct drm_crtc *crtc = fevent->crtc;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
unsigned long flags;
bool frame_done = false;
- if (!work) {
- DPU_ERROR("invalid work handle\n");
- return;
- }
-
- fevent = container_of(work, struct dpu_crtc_frame_event, work);
- if (!fevent->crtc || !fevent->crtc->state) {
- DPU_ERROR("invalid crtc\n");
- return;
- }
-
- crtc = fevent->crtc;
- dpu_crtc = to_dpu_crtc(crtc);
-
- dpu_kms = _dpu_crtc_get_kms(crtc);
- if (!dpu_kms) {
- DPU_ERROR("invalid kms handle\n");
- return;
- }
- priv = dpu_kms->dev->dev_private;
DPU_ATRACE_BEGIN("crtc_frame_event");
DRM_DEBUG_KMS("crtc%d event:%u ts:%lld\n", crtc->base.id, fevent->event,
@@ -470,11 +415,6 @@ static void dpu_crtc_frame_event_cb(void *data, u32 event)
unsigned long flags;
u32 crtc_id;
- if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
- DPU_ERROR("invalid parameters\n");
- return;
- }
-
/* Nothing to do on idle event */
if (event & DPU_ENCODER_FRAME_EVENT_IDLE)
return;
@@ -583,23 +523,12 @@ static void _dpu_crtc_setup_mixers(struct drm_crtc *crtc)
static void _dpu_crtc_setup_lm_bounds(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
- struct dpu_crtc *dpu_crtc;
- struct dpu_crtc_state *cstate;
- struct drm_display_mode *adj_mode;
- u32 crtc_split_width;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
+ struct dpu_crtc_state *cstate = to_dpu_crtc_state(state);
+ struct drm_display_mode *adj_mode = &state->adjusted_mode;
+ u32 crtc_split_width = _dpu_crtc_get_mixer_width(cstate, adj_mode);
int i;
- if (!crtc || !state) {
- DPU_ERROR("invalid args\n");
- return;
- }
-
- dpu_crtc = to_dpu_crtc(crtc);
- cstate = to_dpu_crtc_state(state);
-
- adj_mode = &state->adjusted_mode;
- crtc_split_width = _dpu_crtc_get_mixer_width(cstate, adj_mode);
-
for (i = 0; i < cstate->num_mixers; i++) {
struct drm_rect *r = &cstate->lm_bounds[i];
r->x1 = crtc_split_width * i;
@@ -693,11 +622,6 @@ static void dpu_crtc_atomic_flush(struct drm_crtc *crtc,
unsigned long flags;
struct dpu_crtc_state *cstate;
- if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
- DPU_ERROR("invalid crtc\n");
- return;
- }
-
if (!crtc->state->enable) {
DPU_DEBUG("crtc%d -> enable %d, skip atomic_flush\n",
crtc->base.id, crtc->state->enable);
@@ -790,15 +714,9 @@ static void dpu_crtc_destroy_state(struct drm_crtc *crtc,
static int _dpu_crtc_wait_for_frame_done(struct drm_crtc *crtc)
{
- struct dpu_crtc *dpu_crtc;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
int ret, rc = 0;
- if (!crtc) {
- DPU_ERROR("invalid argument\n");
- return -EINVAL;
- }
- dpu_crtc = to_dpu_crtc(crtc);
-
if (!atomic_read(&dpu_crtc->frame_pending)) {
DPU_DEBUG("no frames pending\n");
return 0;
@@ -819,29 +737,12 @@ static int _dpu_crtc_wait_for_frame_done(struct drm_crtc *crtc)
void dpu_crtc_commit_kickoff(struct drm_crtc *crtc)
{
struct drm_encoder *encoder;
- struct drm_device *dev;
- struct dpu_crtc *dpu_crtc;
- struct msm_drm_private *priv;
- struct dpu_kms *dpu_kms;
- struct dpu_crtc_state *cstate;
+ struct drm_device *dev = crtc->dev;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
+ struct dpu_kms *dpu_kms = _dpu_crtc_get_kms(crtc);
+ struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
int ret;
- if (!crtc) {
- DPU_ERROR("invalid argument\n");
- return;
- }
- dev = crtc->dev;
- dpu_crtc = to_dpu_crtc(crtc);
- dpu_kms = _dpu_crtc_get_kms(crtc);
-
- if (!dpu_kms || !dpu_kms->dev || !dpu_kms->dev->dev_private) {
- DPU_ERROR("invalid argument\n");
- return;
- }
-
- priv = dpu_kms->dev->dev_private;
- cstate = to_dpu_crtc_state(crtc->state);
-
/*
* If no mixers has been allocated in dpu_crtc_atomic_check(),
* it means we are trying to start a CRTC whose state is disabled:
@@ -969,24 +870,9 @@ static int _dpu_crtc_vblank_enable_no_lock(
*/
static void _dpu_crtc_set_suspend(struct drm_crtc *crtc, bool enable)
{
- struct dpu_crtc *dpu_crtc;
- struct msm_drm_private *priv;
- struct dpu_kms *dpu_kms;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
int ret = 0;
- if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
- DPU_ERROR("invalid crtc\n");
- return;
- }
- dpu_crtc = to_dpu_crtc(crtc);
- priv = crtc->dev->dev_private;
-
- if (!priv->kms) {
- DPU_ERROR("invalid crtc kms\n");
- return;
- }
- dpu_kms = to_dpu_kms(priv->kms);
-
DRM_DEBUG_KMS("crtc%d suspend = %d\n", crtc->base.id, enable);
mutex_lock(&dpu_crtc->crtc_lock);
@@ -1079,16 +965,8 @@ static void dpu_crtc_reset(struct drm_crtc *crtc)
static void dpu_crtc_handle_power_event(u32 event_type, void *arg)
{
struct drm_crtc *crtc = arg;
- struct dpu_crtc *dpu_crtc;
+ struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
struct drm_encoder *encoder;
- struct dpu_crtc_state *cstate;
-
- if (!crtc) {
- DPU_ERROR("invalid crtc\n");
- return;
- }
- dpu_crtc = to_dpu_crtc(crtc);
- cstate = to_dpu_crtc_state(dpu_crtc->base.state);
mutex_lock(&dpu_crtc->crtc_lock);
@@ -1673,8 +1551,6 @@ static int _dpu_crtc_init_debugfs(struct drm_crtc *crtc)
dpu_crtc = to_dpu_crtc(crtc);
dpu_kms = _dpu_crtc_get_kms(crtc);
- if (!dpu_kms)
- return -EINVAL;
dpu_crtc->debugfs_root = debugfs_create_dir(dpu_crtc->name,
crtc->dev->primary->debugfs_root);
--
2.19.0.444.g18242da7ef-goog
