[PATCH v2 5/6] drm/msm/dpu: remove struct dpu_encoder_irq
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Thu Feb 17 04:16:16 UTC 2022
Remove additional indirection: specify IRQ callbacks and IRQ indices
directly rather than through the pointer in the irq structure. For each
IRQ we have a constant IRQ callback. This change simplifies code review
as the reader no longer needs to remember which function is called.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 28 +++----
.../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 21 +-----
.../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 73 +++++++------------
.../drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 42 ++++-------
4 files changed, 58 insertions(+), 106 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index dbcbf96cf8eb..83b6715820fa 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -261,9 +261,10 @@ static int dpu_encoder_helper_wait_event_timeout(int32_t drm_id,
int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
enum dpu_intr_idx intr_idx,
+ void (*func)(void *arg, int irq_idx),
struct dpu_encoder_wait_info *wait_info)
{
- struct dpu_encoder_irq *irq;
+ int irq;
u32 irq_status;
int ret;
@@ -271,7 +272,7 @@ int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
DPU_ERROR("invalid params\n");
return -EINVAL;
}
- irq = &phys_enc->irq[intr_idx];
+ irq = phys_enc->irq[intr_idx];
/* note: do master / slave checking outside */
@@ -279,53 +280,52 @@ int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
if (phys_enc->enable_state == DPU_ENC_DISABLED) {
DRM_ERROR("encoder is disabled id=%u, intr=%d, irq=%d\n",
DRMID(phys_enc->parent), intr_idx,
- irq->irq_idx);
+ irq);
return -EWOULDBLOCK;
}
- if (irq->irq_idx < 0) {
- DRM_DEBUG_KMS("skip irq wait id=%u, intr=%d, irq=%s\n",
- DRMID(phys_enc->parent), intr_idx,
- irq->name);
+ if (irq < 0) {
+ DRM_DEBUG_KMS("skip irq wait id=%u, intr=%d\n",
+ DRMID(phys_enc->parent), intr_idx);
return 0;
}
DRM_DEBUG_KMS("id=%u, intr=%d, irq=%d, pp=%d, pending_cnt=%d\n",
DRMID(phys_enc->parent), intr_idx,
- irq->irq_idx, phys_enc->hw_pp->idx - PINGPONG_0,
+ irq, phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
ret = dpu_encoder_helper_wait_event_timeout(
DRMID(phys_enc->parent),
- irq->irq_idx,
+ irq,
wait_info);
if (ret <= 0) {
- irq_status = dpu_core_irq_read(phys_enc->dpu_kms, irq->irq_idx);
+ irq_status = dpu_core_irq_read(phys_enc->dpu_kms, irq);
if (irq_status) {
unsigned long flags;
DRM_DEBUG_KMS("irq not triggered id=%u, intr=%d, irq=%d, pp=%d, atomic_cnt=%d\n",
DRMID(phys_enc->parent), intr_idx,
- irq->irq_idx,
+ irq,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
local_irq_save(flags);
- irq->func(phys_enc, irq->irq_idx);
+ func(phys_enc, irq);
local_irq_restore(flags);
ret = 0;
} else {
ret = -ETIMEDOUT;
DRM_DEBUG_KMS("irq timeout id=%u, intr=%d, irq=%d, pp=%d, atomic_cnt=%d\n",
DRMID(phys_enc->parent), intr_idx,
- irq->irq_idx,
+ irq,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
}
} else {
ret = 0;
trace_dpu_enc_irq_wait_success(DRMID(phys_enc->parent),
- intr_idx, irq->irq_idx,
+ intr_idx, irq,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
index ff2218155b44..803fd6f25da1 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
@@ -162,21 +162,6 @@ enum dpu_intr_idx {
INTR_IDX_MAX,
};
-/**
- * dpu_encoder_irq - tracking structure for interrupts
- * @name: string name of interrupt
- * @intr_idx: Encoder interrupt enumeration
- * @irq_idx: IRQ interface lookup index from DPU IRQ framework
- * will be -EINVAL if IRQ is not registered
- * @irq_cb: interrupt callback
- */
-struct dpu_encoder_irq {
- const char *name;
- enum dpu_intr_idx intr_idx;
- int irq_idx;
- void (*func)(void *arg, int irq_idx);
-};
-
/**
* struct dpu_encoder_phys - physical encoder that drives a single INTF block
* tied to a specific panel / sub-panel. Abstract type, sub-classed by
@@ -207,7 +192,7 @@ struct dpu_encoder_irq {
* @pending_ctlstart_cnt: Atomic counter tracking the number of ctl start
* pending.
* @pending_kickoff_wq: Wait queue for blocking until kickoff completes
- * @irq: IRQ tracking structures
+ * @irq: IRQ indices
*/
struct dpu_encoder_phys {
struct drm_encoder *parent;
@@ -231,7 +216,7 @@ struct dpu_encoder_phys {
atomic_t pending_ctlstart_cnt;
atomic_t pending_kickoff_cnt;
wait_queue_head_t pending_kickoff_wq;
- struct dpu_encoder_irq irq[INTR_IDX_MAX];
+ int irq[INTR_IDX_MAX];
};
static inline int dpu_encoder_phys_inc_pending(struct dpu_encoder_phys *phys)
@@ -357,11 +342,13 @@ void dpu_encoder_helper_report_irq_timeout(struct dpu_encoder_phys *phys_enc,
* note: will call dpu_encoder_helper_wait_for_irq on timeout
* @phys_enc: Pointer to physical encoder structure
* @intr_idx: encoder interrupt index
+ * @func: IRQ callback to be called in case of timeout
* @wait_info: wait info struct
* @Return: 0 or -ERROR
*/
int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
enum dpu_intr_idx intr_idx,
+ void (*func)(void *arg, int irq_idx),
struct dpu_encoder_wait_info *wait_info);
#endif /* __dpu_encoder_phys_H__ */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
index ca7d557312ff..7f5b7f0fff2e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
@@ -151,7 +151,6 @@ static void dpu_encoder_phys_cmd_mode_set(
{
struct dpu_encoder_phys_cmd *cmd_enc =
to_dpu_encoder_phys_cmd(phys_enc);
- struct dpu_encoder_irq *irq;
if (!mode || !adj_mode) {
DPU_ERROR("invalid args\n");
@@ -161,17 +160,13 @@ static void dpu_encoder_phys_cmd_mode_set(
DPU_DEBUG_CMDENC(cmd_enc, "caching mode:\n");
drm_mode_debug_printmodeline(adj_mode);
- irq = &phys_enc->irq[INTR_IDX_CTL_START];
- irq->irq_idx = phys_enc->hw_ctl->caps->intr_start;
+ phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
- irq = &phys_enc->irq[INTR_IDX_PINGPONG];
- irq->irq_idx = phys_enc->hw_pp->caps->intr_done;
+ phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
- irq = &phys_enc->irq[INTR_IDX_RDPTR];
- irq->irq_idx = phys_enc->hw_pp->caps->intr_rdptr;
+ phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
- irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
- irq->irq_idx = phys_enc->hw_intf->cap->intr_underrun;
+ phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
}
static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
@@ -212,7 +207,7 @@ static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
atomic_read(&phys_enc->pending_kickoff_cnt));
msm_disp_snapshot_state(drm_enc->dev);
dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_RDPTR].irq_idx);
+ phys_enc->irq[INTR_IDX_RDPTR]);
}
atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0);
@@ -240,6 +235,7 @@ static int _dpu_encoder_phys_cmd_wait_for_idle(
wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
ret = dpu_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_PINGPONG,
+ dpu_encoder_phys_cmd_pp_tx_done_irq,
&wait_info);
if (ret == -ETIMEDOUT)
_dpu_encoder_phys_cmd_handle_ppdone_timeout(phys_enc);
@@ -279,11 +275,12 @@ static int dpu_encoder_phys_cmd_control_vblank_irq(
if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1)
ret = dpu_core_irq_register_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_RDPTR].irq_idx,
- phys_enc->irq[INTR_IDX_RDPTR].func, phys_enc);
+ phys_enc->irq[INTR_IDX_RDPTR],
+ dpu_encoder_phys_cmd_pp_rd_ptr_irq,
+ phys_enc);
else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0)
ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_RDPTR].irq_idx);
+ phys_enc->irq[INTR_IDX_RDPTR]);
end:
if (ret) {
@@ -305,27 +302,30 @@ static void dpu_encoder_phys_cmd_irq_control(struct dpu_encoder_phys *phys_enc,
if (enable) {
dpu_core_irq_register_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_PINGPONG].irq_idx,
- phys_enc->irq[INTR_IDX_PINGPONG].func, phys_enc);
+ phys_enc->irq[INTR_IDX_PINGPONG],
+ dpu_encoder_phys_cmd_pp_tx_done_irq,
+ phys_enc);
dpu_core_irq_register_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_UNDERRUN].irq_idx,
- phys_enc->irq[INTR_IDX_UNDERRUN].func, phys_enc);
+ phys_enc->irq[INTR_IDX_UNDERRUN],
+ dpu_encoder_phys_cmd_underrun_irq,
+ phys_enc);
dpu_encoder_phys_cmd_control_vblank_irq(phys_enc, true);
if (dpu_encoder_phys_cmd_is_master(phys_enc))
dpu_core_irq_register_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_CTL_START].irq_idx,
- phys_enc->irq[INTR_IDX_CTL_START].func, phys_enc);
+ phys_enc->irq[INTR_IDX_CTL_START],
+ dpu_encoder_phys_cmd_ctl_start_irq,
+ phys_enc);
} else {
if (dpu_encoder_phys_cmd_is_master(phys_enc))
dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_CTL_START].irq_idx);
+ phys_enc->irq[INTR_IDX_CTL_START]);
dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_UNDERRUN].irq_idx);
+ phys_enc->irq[INTR_IDX_UNDERRUN]);
dpu_encoder_phys_cmd_control_vblank_irq(phys_enc, false);
dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_PINGPONG].irq_idx);
+ phys_enc->irq[INTR_IDX_PINGPONG]);
}
}
@@ -660,6 +660,7 @@ static int _dpu_encoder_phys_cmd_wait_for_ctl_start(
wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
ret = dpu_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_CTL_START,
+ dpu_encoder_phys_cmd_ctl_start_irq,
&wait_info);
if (ret == -ETIMEDOUT) {
DPU_ERROR_CMDENC(cmd_enc, "ctl start interrupt wait failed\n");
@@ -715,6 +716,7 @@ static int dpu_encoder_phys_cmd_wait_for_vblank(
atomic_inc(&cmd_enc->pending_vblank_cnt);
rc = dpu_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_RDPTR,
+ dpu_encoder_phys_cmd_pp_rd_ptr_irq,
&wait_info);
return rc;
@@ -766,7 +768,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
{
struct dpu_encoder_phys *phys_enc = NULL;
struct dpu_encoder_phys_cmd *cmd_enc = NULL;
- struct dpu_encoder_irq *irq;
int i, ret = 0;
DPU_DEBUG("intf %d\n", p->intf_idx - INTF_0);
@@ -790,30 +791,8 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
phys_enc->enc_spinlock = p->enc_spinlock;
cmd_enc->stream_sel = 0;
phys_enc->enable_state = DPU_ENC_DISABLED;
- for (i = 0; i < INTR_IDX_MAX; i++) {
- irq = &phys_enc->irq[i];
- irq->irq_idx = -EINVAL;
- }
-
- irq = &phys_enc->irq[INTR_IDX_CTL_START];
- irq->name = "ctl_start";
- irq->intr_idx = INTR_IDX_CTL_START;
- irq->func = dpu_encoder_phys_cmd_ctl_start_irq;
-
- irq = &phys_enc->irq[INTR_IDX_PINGPONG];
- irq->name = "pp_done";
- irq->intr_idx = INTR_IDX_PINGPONG;
- irq->func = dpu_encoder_phys_cmd_pp_tx_done_irq;
-
- irq = &phys_enc->irq[INTR_IDX_RDPTR];
- irq->name = "pp_rd_ptr";
- irq->intr_idx = INTR_IDX_RDPTR;
- irq->func = dpu_encoder_phys_cmd_pp_rd_ptr_irq;
-
- irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
- irq->name = "underrun";
- irq->intr_idx = INTR_IDX_UNDERRUN;
- irq->func = dpu_encoder_phys_cmd_underrun_irq;
+ for (i = 0; i < ARRAY_SIZE(phys_enc->irq); i++)
+ phys_enc->irq[i] = -EINVAL;
atomic_set(&phys_enc->vblank_refcount, 0);
atomic_set(&phys_enc->pending_kickoff_cnt, 0);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
index 50c063de1509..1a319d56c879 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
@@ -366,19 +366,15 @@ static void dpu_encoder_phys_vid_mode_set(
struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
- struct dpu_encoder_irq *irq;
-
if (adj_mode) {
phys_enc->cached_mode = *adj_mode;
drm_mode_debug_printmodeline(adj_mode);
DPU_DEBUG_VIDENC(phys_enc, "caching mode:\n");
}
- irq = &phys_enc->irq[INTR_IDX_VSYNC];
- irq->irq_idx = phys_enc->hw_intf->cap->intr_vsync;
+ phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
- irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
- irq->irq_idx = phys_enc->hw_intf->cap->intr_underrun;
+ phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
}
static int dpu_encoder_phys_vid_control_vblank_irq(
@@ -405,11 +401,12 @@ static int dpu_encoder_phys_vid_control_vblank_irq(
if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1)
ret = dpu_core_irq_register_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_VSYNC].irq_idx,
- phys_enc->irq[INTR_IDX_VSYNC].func, phys_enc);
+ phys_enc->irq[INTR_IDX_VSYNC],
+ dpu_encoder_phys_vid_vblank_irq,
+ phys_enc);
else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0)
ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_VSYNC].irq_idx);
+ phys_enc->irq[INTR_IDX_VSYNC]);
end:
if (ret) {
@@ -490,6 +487,7 @@ static int dpu_encoder_phys_vid_wait_for_vblank(
/* Wait for kickoff to complete */
ret = dpu_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_VSYNC,
+ dpu_encoder_phys_vid_vblank_irq,
&wait_info);
if (ret == -ETIMEDOUT) {
@@ -542,7 +540,7 @@ static void dpu_encoder_phys_vid_prepare_for_kickoff(
ctl->idx, rc);
msm_disp_snapshot_state(drm_enc->dev);
dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_VSYNC].irq_idx);
+ phys_enc->irq[INTR_IDX_VSYNC]);
}
}
@@ -632,12 +630,13 @@ static void dpu_encoder_phys_vid_irq_control(struct dpu_encoder_phys *phys_enc,
return;
dpu_core_irq_register_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_UNDERRUN].irq_idx,
- phys_enc->irq[INTR_IDX_UNDERRUN].func, phys_enc);
+ phys_enc->irq[INTR_IDX_UNDERRUN],
+ dpu_encoder_phys_vid_underrun_irq,
+ phys_enc);
} else {
dpu_encoder_phys_vid_control_vblank_irq(phys_enc, false);
dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
- phys_enc->irq[INTR_IDX_UNDERRUN].irq_idx);
+ phys_enc->irq[INTR_IDX_UNDERRUN]);
}
}
@@ -703,7 +702,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(
struct dpu_enc_phys_init_params *p)
{
struct dpu_encoder_phys *phys_enc = NULL;
- struct dpu_encoder_irq *irq;
int i;
if (!p) {
@@ -729,20 +727,8 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(
phys_enc->split_role = p->split_role;
phys_enc->intf_mode = INTF_MODE_VIDEO;
phys_enc->enc_spinlock = p->enc_spinlock;
- for (i = 0; i < INTR_IDX_MAX; i++) {
- irq = &phys_enc->irq[i];
- irq->irq_idx = -EINVAL;
- }
-
- irq = &phys_enc->irq[INTR_IDX_VSYNC];
- irq->name = "vsync_irq";
- irq->intr_idx = INTR_IDX_VSYNC;
- irq->func = dpu_encoder_phys_vid_vblank_irq;
-
- irq = &phys_enc->irq[INTR_IDX_UNDERRUN];
- irq->name = "underrun";
- irq->intr_idx = INTR_IDX_UNDERRUN;
- irq->func = dpu_encoder_phys_vid_underrun_irq;
+ for (i = 0; i < ARRAY_SIZE(phys_enc->irq); i++)
+ phys_enc->irq[i] = -EINVAL;
atomic_set(&phys_enc->vblank_refcount, 0);
atomic_set(&phys_enc->pending_kickoff_cnt, 0);
--
2.34.1
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