In the DPU driver blank IRQ handling is called from a vblank worker and
can happen outside of the irq_enable / irq_disable pair. Revert commit
d13f638c9b88 ("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set")
to fix vblank IRQ assignment for CMD DSI panels.
Fixes: d13f638c9b88 ("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set")
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 5 ++++
.../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 32 ++++++++++++----------
.../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 13 +++++++--
.../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 11 +++++++-
5 files changed, 46 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 119f3ea50a7c..a7d8ecf3f5be 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1200,6 +1200,8 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
phys->hw_ctl = to_dpu_hw_ctl(hw_ctl[i]);
phys->cached_mode = crtc_state->adjusted_mode;
+ if (phys->ops.atomic_mode_set)
+ phys->ops.atomic_mode_set(phys, crtc_state, conn_state);
}
}
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 002e89cc1705..30470cd15a48 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
@@ -69,6 +69,8 @@ struct dpu_encoder_phys;
* @is_master: Whether this phys_enc is the current master
* encoder. Can be switched at enable time. Based
* on split_role and current mode (CMD/VID).
+ * @atomic_mode_set: DRM Call. Set a DRM mode.
+ * This likely caches the mode, for use at enable.
* @enable: DRM Call. Enable a DRM mode.
* @disable: DRM Call. Disable mode.
* @control_vblank_irq Register/Deregister for VBLANK IRQ
@@ -93,6 +95,9 @@ struct dpu_encoder_phys;
struct dpu_encoder_phys_ops {
void (*prepare_commit)(struct dpu_encoder_phys *encoder);
bool (*is_master)(struct dpu_encoder_phys *encoder);
+ void (*atomic_mode_set)(struct dpu_encoder_phys *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state);
void (*enable)(struct dpu_encoder_phys *encoder);
void (*disable)(struct dpu_encoder_phys *encoder);
int (*control_vblank_irq)(struct dpu_encoder_phys *enc, bool enable);
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 489be1c0c704..95cd39b49668 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
@@ -142,6 +142,23 @@ static void dpu_encoder_phys_cmd_underrun_irq(void *arg)
dpu_encoder_underrun_callback(phys_enc->parent, phys_enc);
}
+static void dpu_encoder_phys_cmd_atomic_mode_set(
+ struct dpu_encoder_phys *phys_enc,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
+
+ phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
+
+ if (phys_enc->has_intf_te)
+ phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_intf->cap->intr_tear_rd_ptr;
+ else
+ phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
+
+ phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
+}
+
static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
struct dpu_encoder_phys *phys_enc)
{
@@ -280,14 +297,6 @@ static void dpu_encoder_phys_cmd_irq_enable(struct dpu_encoder_phys *phys_enc)
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->vblank_refcount);
- phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
- phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
-
- if (phys_enc->has_intf_te)
- phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_intf->cap->intr_tear_rd_ptr;
- else
- phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
-
dpu_core_irq_register_callback(phys_enc->dpu_kms,
phys_enc->irq[INTR_IDX_PINGPONG],
dpu_encoder_phys_cmd_pp_tx_done_irq,
@@ -318,10 +327,6 @@ static void dpu_encoder_phys_cmd_irq_disable(struct dpu_encoder_phys *phys_enc)
dpu_core_irq_unregister_callback(phys_enc->dpu_kms, 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]);
-
- phys_enc->irq[INTR_IDX_CTL_START] = 0;
- phys_enc->irq[INTR_IDX_PINGPONG] = 0;
- phys_enc->irq[INTR_IDX_RDPTR] = 0;
}
static void dpu_encoder_phys_cmd_tearcheck_config(
@@ -698,6 +703,7 @@ static void dpu_encoder_phys_cmd_init_ops(
struct dpu_encoder_phys_ops *ops)
{
ops->is_master = dpu_encoder_phys_cmd_is_master;
+ ops->atomic_mode_set = dpu_encoder_phys_cmd_atomic_mode_set;
ops->enable = dpu_encoder_phys_cmd_enable;
ops->disable = dpu_encoder_phys_cmd_disable;
ops->control_vblank_irq = dpu_encoder_phys_cmd_control_vblank_irq;
@@ -736,8 +742,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(struct drm_device *dev,
dpu_encoder_phys_cmd_init_ops(&phys_enc->ops);
phys_enc->intf_mode = INTF_MODE_CMD;
- phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
-
cmd_enc->stream_sel = 0;
if (!phys_enc->hw_intf) {
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 ef69c2f408c3..636a97432d51 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
@@ -356,6 +356,16 @@ static bool dpu_encoder_phys_vid_needs_single_flush(
return phys_enc->split_role != ENC_ROLE_SOLO;
}
+static void dpu_encoder_phys_vid_atomic_mode_set(
+ struct dpu_encoder_phys *phys_enc,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
+
+ phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
+}
+
static int dpu_encoder_phys_vid_control_vblank_irq(
struct dpu_encoder_phys *phys_enc,
bool enable)
@@ -699,6 +709,7 @@ static int dpu_encoder_phys_vid_get_frame_count(
static void dpu_encoder_phys_vid_init_ops(struct dpu_encoder_phys_ops *ops)
{
ops->is_master = dpu_encoder_phys_vid_is_master;
+ ops->atomic_mode_set = dpu_encoder_phys_vid_atomic_mode_set;
ops->enable = dpu_encoder_phys_vid_enable;
ops->disable = dpu_encoder_phys_vid_disable;
ops->control_vblank_irq = dpu_encoder_phys_vid_control_vblank_irq;
@@ -737,8 +748,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(struct drm_device *dev,
dpu_encoder_phys_vid_init_ops(&phys_enc->ops);
phys_enc->intf_mode = INTF_MODE_VIDEO;
- phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
- phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
DPU_DEBUG_VIDENC(phys_enc, "created intf idx:%d\n", p->hw_intf->idx);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
index d3ea91c1d7d2..356dca5e5ea9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
@@ -404,6 +404,15 @@ static void dpu_encoder_phys_wb_irq_disable(struct dpu_encoder_phys *phys)
dpu_core_irq_unregister_callback(phys->dpu_kms, phys->irq[INTR_IDX_WB_DONE]);
}
+static void dpu_encoder_phys_wb_atomic_mode_set(
+ struct dpu_encoder_phys *phys_enc,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+
+ phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
+}
+
static void _dpu_encoder_phys_wb_handle_wbdone_timeout(
struct dpu_encoder_phys *phys_enc)
{
@@ -640,6 +649,7 @@ static bool dpu_encoder_phys_wb_is_valid_for_commit(struct dpu_encoder_phys *phy
static void dpu_encoder_phys_wb_init_ops(struct dpu_encoder_phys_ops *ops)
{
ops->is_master = dpu_encoder_phys_wb_is_master;
+ ops->atomic_mode_set = dpu_encoder_phys_wb_atomic_mode_set;
ops->enable = dpu_encoder_phys_wb_enable;
ops->disable = dpu_encoder_phys_wb_disable;
ops->wait_for_commit_done = dpu_encoder_phys_wb_wait_for_commit_done;
@@ -685,7 +695,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_wb_init(struct drm_device *dev,
dpu_encoder_phys_wb_init_ops(&phys_enc->ops);
phys_enc->intf_mode = INTF_MODE_WB_LINE;
- phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
atomic_set(&wb_enc->wbirq_refcount, 0);
---
base-commit: 75fa778d74b786a1608d55d655d42b480a6fa8bd
change-id: 20240514-dpu-revert-ams-9410abc1ee48
Best regards,
--
Dmitry Baryshkov <[email protected]>
On 5/14/2024 12:56 AM, Dmitry Baryshkov wrote:
> In the DPU driver blank IRQ handling is called from a vblank worker and
> can happen outside of the irq_enable / irq_disable pair. Revert commit
> d13f638c9b88 ("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set")
> to fix vblank IRQ assignment for CMD DSI panels.
>
Can you please explain the sequence of events causing an issue due to
moving the irq assignment to init and how is moving it back to modeset
helping?
> Fixes: d13f638c9b88 ("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set")
> Signed-off-by: Dmitry Baryshkov <[email protected]>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 ++
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 5 ++++
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 32 ++++++++++++----------
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 13 +++++++--
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 11 +++++++-
> 5 files changed, 46 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 119f3ea50a7c..a7d8ecf3f5be 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -1200,6 +1200,8 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
> phys->hw_ctl = to_dpu_hw_ctl(hw_ctl[i]);
>
> phys->cached_mode = crtc_state->adjusted_mode;
> + if (phys->ops.atomic_mode_set)
> + phys->ops.atomic_mode_set(phys, crtc_state, conn_state);
> }
> }
>
> 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 002e89cc1705..30470cd15a48 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> @@ -69,6 +69,8 @@ struct dpu_encoder_phys;
> * @is_master: Whether this phys_enc is the current master
> * encoder. Can be switched at enable time. Based
> * on split_role and current mode (CMD/VID).
> + * @atomic_mode_set: DRM Call. Set a DRM mode.
> + * This likely caches the mode, for use at enable.
> * @enable: DRM Call. Enable a DRM mode.
> * @disable: DRM Call. Disable mode.
> * @control_vblank_irq Register/Deregister for VBLANK IRQ
> @@ -93,6 +95,9 @@ struct dpu_encoder_phys;
> struct dpu_encoder_phys_ops {
> void (*prepare_commit)(struct dpu_encoder_phys *encoder);
> bool (*is_master)(struct dpu_encoder_phys *encoder);
> + void (*atomic_mode_set)(struct dpu_encoder_phys *encoder,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state);
> void (*enable)(struct dpu_encoder_phys *encoder);
> void (*disable)(struct dpu_encoder_phys *encoder);
> int (*control_vblank_irq)(struct dpu_encoder_phys *enc, bool enable);
> 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 489be1c0c704..95cd39b49668 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
> @@ -142,6 +142,23 @@ static void dpu_encoder_phys_cmd_underrun_irq(void *arg)
> dpu_encoder_underrun_callback(phys_enc->parent, phys_enc);
> }
>
> +static void dpu_encoder_phys_cmd_atomic_mode_set(
> + struct dpu_encoder_phys *phys_enc,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> + phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
> +
> + phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
> +
> + if (phys_enc->has_intf_te)
> + phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_intf->cap->intr_tear_rd_ptr;
> + else
> + phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
> +
> + phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
> +}
> +
> static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
> struct dpu_encoder_phys *phys_enc)
> {
> @@ -280,14 +297,6 @@ static void dpu_encoder_phys_cmd_irq_enable(struct dpu_encoder_phys *phys_enc)
> phys_enc->hw_pp->idx - PINGPONG_0,
> phys_enc->vblank_refcount);
>
> - phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
> - phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
> -
> - if (phys_enc->has_intf_te)
> - phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_intf->cap->intr_tear_rd_ptr;
> - else
> - phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
> -
> dpu_core_irq_register_callback(phys_enc->dpu_kms,
> phys_enc->irq[INTR_IDX_PINGPONG],
> dpu_encoder_phys_cmd_pp_tx_done_irq,
> @@ -318,10 +327,6 @@ static void dpu_encoder_phys_cmd_irq_disable(struct dpu_encoder_phys *phys_enc)
> dpu_core_irq_unregister_callback(phys_enc->dpu_kms, 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]);
> -
> - phys_enc->irq[INTR_IDX_CTL_START] = 0;
> - phys_enc->irq[INTR_IDX_PINGPONG] = 0;
> - phys_enc->irq[INTR_IDX_RDPTR] = 0;
> }
>
> static void dpu_encoder_phys_cmd_tearcheck_config(
> @@ -698,6 +703,7 @@ static void dpu_encoder_phys_cmd_init_ops(
> struct dpu_encoder_phys_ops *ops)
> {
> ops->is_master = dpu_encoder_phys_cmd_is_master;
> + ops->atomic_mode_set = dpu_encoder_phys_cmd_atomic_mode_set;
> ops->enable = dpu_encoder_phys_cmd_enable;
> ops->disable = dpu_encoder_phys_cmd_disable;
> ops->control_vblank_irq = dpu_encoder_phys_cmd_control_vblank_irq;
> @@ -736,8 +742,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(struct drm_device *dev,
>
> dpu_encoder_phys_cmd_init_ops(&phys_enc->ops);
> phys_enc->intf_mode = INTF_MODE_CMD;
> - phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
> -
> cmd_enc->stream_sel = 0;
>
> if (!phys_enc->hw_intf) {
> 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 ef69c2f408c3..636a97432d51 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
> @@ -356,6 +356,16 @@ static bool dpu_encoder_phys_vid_needs_single_flush(
> return phys_enc->split_role != ENC_ROLE_SOLO;
> }
>
> +static void dpu_encoder_phys_vid_atomic_mode_set(
> + struct dpu_encoder_phys *phys_enc,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> + phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
> +
> + phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
> +}
> +
> static int dpu_encoder_phys_vid_control_vblank_irq(
> struct dpu_encoder_phys *phys_enc,
> bool enable)
> @@ -699,6 +709,7 @@ static int dpu_encoder_phys_vid_get_frame_count(
> static void dpu_encoder_phys_vid_init_ops(struct dpu_encoder_phys_ops *ops)
> {
> ops->is_master = dpu_encoder_phys_vid_is_master;
> + ops->atomic_mode_set = dpu_encoder_phys_vid_atomic_mode_set;
> ops->enable = dpu_encoder_phys_vid_enable;
> ops->disable = dpu_encoder_phys_vid_disable;
> ops->control_vblank_irq = dpu_encoder_phys_vid_control_vblank_irq;
> @@ -737,8 +748,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(struct drm_device *dev,
>
> dpu_encoder_phys_vid_init_ops(&phys_enc->ops);
> phys_enc->intf_mode = INTF_MODE_VIDEO;
> - phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
> - phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
>
> DPU_DEBUG_VIDENC(phys_enc, "created intf idx:%d\n", p->hw_intf->idx);
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> index d3ea91c1d7d2..356dca5e5ea9 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> @@ -404,6 +404,15 @@ static void dpu_encoder_phys_wb_irq_disable(struct dpu_encoder_phys *phys)
> dpu_core_irq_unregister_callback(phys->dpu_kms, phys->irq[INTR_IDX_WB_DONE]);
> }
>
> +static void dpu_encoder_phys_wb_atomic_mode_set(
> + struct dpu_encoder_phys *phys_enc,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> +
> + phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
> +}
> +
> static void _dpu_encoder_phys_wb_handle_wbdone_timeout(
> struct dpu_encoder_phys *phys_enc)
> {
> @@ -640,6 +649,7 @@ static bool dpu_encoder_phys_wb_is_valid_for_commit(struct dpu_encoder_phys *phy
> static void dpu_encoder_phys_wb_init_ops(struct dpu_encoder_phys_ops *ops)
> {
> ops->is_master = dpu_encoder_phys_wb_is_master;
> + ops->atomic_mode_set = dpu_encoder_phys_wb_atomic_mode_set;
> ops->enable = dpu_encoder_phys_wb_enable;
> ops->disable = dpu_encoder_phys_wb_disable;
> ops->wait_for_commit_done = dpu_encoder_phys_wb_wait_for_commit_done;
> @@ -685,7 +695,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_wb_init(struct drm_device *dev,
>
> dpu_encoder_phys_wb_init_ops(&phys_enc->ops);
> phys_enc->intf_mode = INTF_MODE_WB_LINE;
> - phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
>
> atomic_set(&wb_enc->wbirq_refcount, 0);
>
>
> ---
> base-commit: 75fa778d74b786a1608d55d655d42b480a6fa8bd
> change-id: 20240514-dpu-revert-ams-9410abc1ee48
>
> Best regards,
On 14/05/2024 09:56, Dmitry Baryshkov wrote:
> In the DPU driver blank IRQ handling is called from a vblank worker and
> can happen outside of the irq_enable / irq_disable pair. Revert commit
> d13f638c9b88 ("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set")
> to fix vblank IRQ assignment for CMD DSI panels.
>
> Fixes: d13f638c9b88 ("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set")
> Signed-off-by: Dmitry Baryshkov <[email protected]>
Hi Dmitry,
This fixes the regular DRM irq errors for me!
Tested-by: Caleb Connolly <[email protected]> # sm8250 OnePlus 8
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 ++
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 5 ++++
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 32 ++++++++++++----------
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 13 +++++++--
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 11 +++++++-
> 5 files changed, 46 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 119f3ea50a7c..a7d8ecf3f5be 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -1200,6 +1200,8 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
> phys->hw_ctl = to_dpu_hw_ctl(hw_ctl[i]);
>
> phys->cached_mode = crtc_state->adjusted_mode;
> + if (phys->ops.atomic_mode_set)
> + phys->ops.atomic_mode_set(phys, crtc_state, conn_state);
> }
> }
>
> 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 002e89cc1705..30470cd15a48 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
> @@ -69,6 +69,8 @@ struct dpu_encoder_phys;
> * @is_master: Whether this phys_enc is the current master
> * encoder. Can be switched at enable time. Based
> * on split_role and current mode (CMD/VID).
> + * @atomic_mode_set: DRM Call. Set a DRM mode.
> + * This likely caches the mode, for use at enable.
> * @enable: DRM Call. Enable a DRM mode.
> * @disable: DRM Call. Disable mode.
> * @control_vblank_irq Register/Deregister for VBLANK IRQ
> @@ -93,6 +95,9 @@ struct dpu_encoder_phys;
> struct dpu_encoder_phys_ops {
> void (*prepare_commit)(struct dpu_encoder_phys *encoder);
> bool (*is_master)(struct dpu_encoder_phys *encoder);
> + void (*atomic_mode_set)(struct dpu_encoder_phys *encoder,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state);
> void (*enable)(struct dpu_encoder_phys *encoder);
> void (*disable)(struct dpu_encoder_phys *encoder);
> int (*control_vblank_irq)(struct dpu_encoder_phys *enc, bool enable);
> 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 489be1c0c704..95cd39b49668 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
> @@ -142,6 +142,23 @@ static void dpu_encoder_phys_cmd_underrun_irq(void *arg)
> dpu_encoder_underrun_callback(phys_enc->parent, phys_enc);
> }
>
> +static void dpu_encoder_phys_cmd_atomic_mode_set(
> + struct dpu_encoder_phys *phys_enc,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> + phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
> +
> + phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
> +
> + if (phys_enc->has_intf_te)
> + phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_intf->cap->intr_tear_rd_ptr;
> + else
> + phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
> +
> + phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
> +}
> +
> static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
> struct dpu_encoder_phys *phys_enc)
> {
> @@ -280,14 +297,6 @@ static void dpu_encoder_phys_cmd_irq_enable(struct dpu_encoder_phys *phys_enc)
> phys_enc->hw_pp->idx - PINGPONG_0,
> phys_enc->vblank_refcount);
>
> - phys_enc->irq[INTR_IDX_CTL_START] = phys_enc->hw_ctl->caps->intr_start;
> - phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done;
> -
> - if (phys_enc->has_intf_te)
> - phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_intf->cap->intr_tear_rd_ptr;
> - else
> - phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr;
> -
> dpu_core_irq_register_callback(phys_enc->dpu_kms,
> phys_enc->irq[INTR_IDX_PINGPONG],
> dpu_encoder_phys_cmd_pp_tx_done_irq,
> @@ -318,10 +327,6 @@ static void dpu_encoder_phys_cmd_irq_disable(struct dpu_encoder_phys *phys_enc)
> dpu_core_irq_unregister_callback(phys_enc->dpu_kms, 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]);
> -
> - phys_enc->irq[INTR_IDX_CTL_START] = 0;
> - phys_enc->irq[INTR_IDX_PINGPONG] = 0;
> - phys_enc->irq[INTR_IDX_RDPTR] = 0;
> }
>
> static void dpu_encoder_phys_cmd_tearcheck_config(
> @@ -698,6 +703,7 @@ static void dpu_encoder_phys_cmd_init_ops(
> struct dpu_encoder_phys_ops *ops)
> {
> ops->is_master = dpu_encoder_phys_cmd_is_master;
> + ops->atomic_mode_set = dpu_encoder_phys_cmd_atomic_mode_set;
> ops->enable = dpu_encoder_phys_cmd_enable;
> ops->disable = dpu_encoder_phys_cmd_disable;
> ops->control_vblank_irq = dpu_encoder_phys_cmd_control_vblank_irq;
> @@ -736,8 +742,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(struct drm_device *dev,
>
> dpu_encoder_phys_cmd_init_ops(&phys_enc->ops);
> phys_enc->intf_mode = INTF_MODE_CMD;
> - phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
> -
> cmd_enc->stream_sel = 0;
>
> if (!phys_enc->hw_intf) {
> 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 ef69c2f408c3..636a97432d51 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
> @@ -356,6 +356,16 @@ static bool dpu_encoder_phys_vid_needs_single_flush(
> return phys_enc->split_role != ENC_ROLE_SOLO;
> }
>
> +static void dpu_encoder_phys_vid_atomic_mode_set(
> + struct dpu_encoder_phys *phys_enc,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> + phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
> +
> + phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
> +}
> +
> static int dpu_encoder_phys_vid_control_vblank_irq(
> struct dpu_encoder_phys *phys_enc,
> bool enable)
> @@ -699,6 +709,7 @@ static int dpu_encoder_phys_vid_get_frame_count(
> static void dpu_encoder_phys_vid_init_ops(struct dpu_encoder_phys_ops *ops)
> {
> ops->is_master = dpu_encoder_phys_vid_is_master;
> + ops->atomic_mode_set = dpu_encoder_phys_vid_atomic_mode_set;
> ops->enable = dpu_encoder_phys_vid_enable;
> ops->disable = dpu_encoder_phys_vid_disable;
> ops->control_vblank_irq = dpu_encoder_phys_vid_control_vblank_irq;
> @@ -737,8 +748,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_vid_init(struct drm_device *dev,
>
> dpu_encoder_phys_vid_init_ops(&phys_enc->ops);
> phys_enc->intf_mode = INTF_MODE_VIDEO;
> - phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
> - phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
>
> DPU_DEBUG_VIDENC(phys_enc, "created intf idx:%d\n", p->hw_intf->idx);
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> index d3ea91c1d7d2..356dca5e5ea9 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> @@ -404,6 +404,15 @@ static void dpu_encoder_phys_wb_irq_disable(struct dpu_encoder_phys *phys)
> dpu_core_irq_unregister_callback(phys->dpu_kms, phys->irq[INTR_IDX_WB_DONE]);
> }
>
> +static void dpu_encoder_phys_wb_atomic_mode_set(
> + struct dpu_encoder_phys *phys_enc,
> + struct drm_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> +
> + phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
> +}
> +
> static void _dpu_encoder_phys_wb_handle_wbdone_timeout(
> struct dpu_encoder_phys *phys_enc)
> {
> @@ -640,6 +649,7 @@ static bool dpu_encoder_phys_wb_is_valid_for_commit(struct dpu_encoder_phys *phy
> static void dpu_encoder_phys_wb_init_ops(struct dpu_encoder_phys_ops *ops)
> {
> ops->is_master = dpu_encoder_phys_wb_is_master;
> + ops->atomic_mode_set = dpu_encoder_phys_wb_atomic_mode_set;
> ops->enable = dpu_encoder_phys_wb_enable;
> ops->disable = dpu_encoder_phys_wb_disable;
> ops->wait_for_commit_done = dpu_encoder_phys_wb_wait_for_commit_done;
> @@ -685,7 +695,6 @@ struct dpu_encoder_phys *dpu_encoder_phys_wb_init(struct drm_device *dev,
>
> dpu_encoder_phys_wb_init_ops(&phys_enc->ops);
> phys_enc->intf_mode = INTF_MODE_WB_LINE;
> - phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
>
> atomic_set(&wb_enc->wbirq_refcount, 0);
>
>
> ---
> base-commit: 75fa778d74b786a1608d55d655d42b480a6fa8bd
> change-id: 20240514-dpu-revert-ams-9410abc1ee48
>
> Best regards,
--
// Caleb (they/them)