[PATCH] drm/msm/dp: add connector type to enhance debug messages

[PATCH] drm/msm/dp: add connector type to enhance debug messages

[Kuogee Hsieh]

DP driver is a generic driver which supports both eDP and DP.
For debugging purpose it is required to have capabilities to
differentiate message are generated from eDP or DP. This patch
add connector type into debug messages for this purpose.

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_ctrl.c    | 20 +++++------
 drivers/gpu/drm/msm/dp/dp_display.c | 71 ++++++++++++++++++++++++++-----------
 2 files changed, 60 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 245e1b9..dcd0126 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1396,6 +1396,8 @@ void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl)
 
 	dp_catalog_ctrl_phy_reset(ctrl->catalog);
 	phy_init(phy);
+	DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
+			phy, phy->init_count, phy->power_count);
 }
 
 void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
@@ -1410,6 +1412,8 @@ void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
 
 	dp_catalog_ctrl_phy_reset(ctrl->catalog);
 	phy_exit(phy);
+	DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
+			phy, phy->init_count, phy->power_count);
 }
 
 static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
@@ -1484,6 +1488,8 @@ static int dp_ctrl_deinitialize_mainlink(struct dp_ctrl_private *ctrl)
 	phy_exit(phy);
 	phy_init(phy);
 
+	DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
+			phy, phy->init_count, phy->power_count);
 	return 0;
 }
 
@@ -1895,14 +1901,12 @@ int dp_ctrl_off_link_stream(struct dp_ctrl *dp_ctrl)
 
 	phy_power_off(phy);
 
-	DRM_DEBUG_DP("After, phy=%x init_count=%d power_on=%d\n",
-		(u32)(uintptr_t)phy, phy->init_count, phy->power_count);
-
 	/* aux channel down, reinit phy */
 	phy_exit(phy);
 	phy_init(phy);
 
-	DRM_DEBUG_DP("DP off link/stream done\n");
+	DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
+			phy, phy->init_count, phy->power_count);
 	return ret;
 }
 
@@ -1933,13 +1937,9 @@ int dp_ctrl_off(struct dp_ctrl *dp_ctrl)
 		DRM_ERROR("Failed to disable link clocks. ret=%d\n", ret);
 	}
 
-	DRM_DEBUG_DP("Before, phy=%x init_count=%d power_on=%d\n",
-		(u32)(uintptr_t)phy, phy->init_count, phy->power_count);
-
 	phy_power_off(phy);
-
-	DRM_DEBUG_DP("After, phy=%x init_count=%d power_on=%d\n",
-		(u32)(uintptr_t)phy, phy->init_count, phy->power_count);
+	DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
+			phy, phy->init_count, phy->power_count);
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index e89556ad..0476032 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -376,8 +376,9 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp)
 
 static void dp_display_host_phy_init(struct dp_display_private *dp)
 {
-	DRM_DEBUG_DP("core_init=%d phy_init=%d\n",
-			dp->core_initialized, dp->phy_initialized);
+	DRM_DEBUG_DP("type=%d core_init=%d phy_init=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized);
 
 	if (!dp->phy_initialized) {
 		dp_ctrl_phy_init(dp->ctrl);
@@ -387,8 +388,9 @@ static void dp_display_host_phy_init(struct dp_display_private *dp)
 
 static void dp_display_host_phy_exit(struct dp_display_private *dp)
 {
-	DRM_DEBUG_DP("core_init=%d phy_init=%d\n",
-			dp->core_initialized, dp->phy_initialized);
+	DRM_DEBUG_DP("type=%d core_init=%d phy_init=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized);
 
 	if (dp->phy_initialized) {
 		dp_ctrl_phy_exit(dp->ctrl);
@@ -398,7 +400,9 @@ static void dp_display_host_phy_exit(struct dp_display_private *dp)
 
 static void dp_display_host_init(struct dp_display_private *dp)
 {
-	DRM_DEBUG_DP("core_initialized=%d\n", dp->core_initialized);
+	DRM_DEBUG_DP("type=%d core_init=%d phy_init=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized);
 
 	dp_power_init(dp->power, false);
 	dp_ctrl_reset_irq_ctrl(dp->ctrl, true);
@@ -408,7 +412,9 @@ static void dp_display_host_init(struct dp_display_private *dp)
 
 static void dp_display_host_deinit(struct dp_display_private *dp)
 {
-	DRM_DEBUG_DP("core_initialized=%d\n", dp->core_initialized);
+	DRM_DEBUG_DP("type=%d core_init=%d phy_init=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized);
 
 	dp_ctrl_reset_irq_ctrl(dp->ctrl, false);
 	dp_aux_deinit(dp->aux);
@@ -519,7 +525,9 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 	mutex_lock(&dp->event_mutex);
 
 	state =  dp->hpd_state;
-	DRM_DEBUG_DP("hpd_state=%d\n", state);
+	DRM_DEBUG_DP("Before, type=%d hpd_state=%d\n",
+			dp->dp_display.connector_type, state);
+
 	if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
 		mutex_unlock(&dp->event_mutex);
 		return 0;
@@ -551,6 +559,8 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 	dp_catalog_hpd_config_intr(dp->catalog,
 		DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, true);
 
+	DRM_DEBUG_DP("After, type=%d hpd_state=%d\n",
+			dp->dp_display.connector_type, state);
 	mutex_unlock(&dp->event_mutex);
 
 	/* uevent will complete connection part */
@@ -567,8 +577,10 @@ static int dp_connect_pending_timeout(struct dp_display_private *dp, u32 data)
 	mutex_lock(&dp->event_mutex);
 
 	state = dp->hpd_state;
-	if (state == ST_CONNECT_PENDING)
+	if (state == ST_CONNECT_PENDING) {
 		dp->hpd_state = ST_CONNECTED;
+		DRM_DEBUG_DP("type=%d\n", dp->dp_display.connector_type);
+	}
 
 	mutex_unlock(&dp->event_mutex);
 
@@ -601,6 +613,9 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
 
 	state = dp->hpd_state;
 
+	DRM_DEBUG_DP("Before, type=%d hpd_state=%d\n",
+			dp->dp_display.connector_type, state);
+
 	/* disable irq_hpd/replug interrupts */
 	dp_catalog_hpd_config_intr(dp->catalog,
 		DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, false);
@@ -643,13 +658,15 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
 	/* start sentinel checking in case of missing uevent */
 	dp_add_event(dp, EV_DISCONNECT_PENDING_TIMEOUT, 0, DP_TIMEOUT_5_SECOND);
 
-	DRM_DEBUG_DP("hpd_state=%d\n", state);
 	/* signal the disconnect event early to ensure proper teardown */
 	dp_display_handle_plugged_change(&dp->dp_display, false);
 
 	/* enable HDP plug interrupt to prepare for next plugin */
 	dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, true);
 
+	DRM_DEBUG_DP("After, type=%d hpd_state=%d\n",
+			dp->dp_display.connector_type, state);
+
 	/* uevent will complete disconnection part */
 	mutex_unlock(&dp->event_mutex);
 	return 0;
@@ -662,8 +679,10 @@ static int dp_disconnect_pending_timeout(struct dp_display_private *dp, u32 data
 	mutex_lock(&dp->event_mutex);
 
 	state =  dp->hpd_state;
-	if (state == ST_DISCONNECT_PENDING)
+	if (state == ST_DISCONNECT_PENDING) {
 		dp->hpd_state = ST_DISCONNECTED;
+		DRM_DEBUG_DP("type=%d\n", dp->dp_display.connector_type);
+	}
 
 	mutex_unlock(&dp->event_mutex);
 
@@ -678,6 +697,9 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 
 	/* irq_hpd can happen at either connected or disconnected state */
 	state =  dp->hpd_state;
+	DRM_DEBUG_DP("Before, type=%d hpd_state=%d\n",
+			dp->dp_display.connector_type, state);
+
 	if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
 		mutex_unlock(&dp->event_mutex);
 		return 0;
@@ -699,7 +721,8 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 
 	dp_display_usbpd_attention_cb(&dp->pdev->dev);
 
-	DRM_DEBUG_DP("hpd_state=%d\n", state);
+	DRM_DEBUG_DP("After, type=%d hpd_state=%d\n",
+			dp->dp_display.connector_type, state);
 
 	mutex_unlock(&dp->event_mutex);
 
@@ -1152,8 +1175,9 @@ static irqreturn_t dp_display_irq_handler(int irq, void *dev_id)
 
 	hpd_isr_status = dp_catalog_hpd_get_intr_status(dp->catalog);
 
-	DRM_DEBUG_DP("hpd isr status=%#x\n", hpd_isr_status);
 	if (hpd_isr_status & 0x0F) {
+		DRM_DEBUG_DP("type=%d isr=0x%x\n",
+			dp->dp_display.connector_type, hpd_isr_status);
 		/* hpd related interrupts */
 		if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK)
 			dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
@@ -1306,8 +1330,9 @@ static int dp_pm_resume(struct device *dev)
 
 	mutex_lock(&dp->event_mutex);
 
-	DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
-			dp->core_initialized, dp_display->power_on);
+	DRM_DEBUG_DP("Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized, dp_display->power_on);
 
 	/* start from disconnected state */
 	dp->hpd_state = ST_DISCONNECTED;
@@ -1345,9 +1370,11 @@ static int dp_pm_resume(struct device *dev)
 		dp_display_handle_plugged_change(dp_display, false);
 	}
 
-	DRM_DEBUG_DP("After, sink_count=%d is_connected=%d core_inited=%d power_on=%d\n",
-			dp->link->sink_count, dp->dp_display.is_connected,
-			dp->core_initialized, dp_display->power_on);
+	DRM_DEBUG_DP("After, type=%d sink_count=%d is_connected=%d \
+			core_inited=%d phy_inited=%d power_on=%d\n",
+		dp->dp_display.connector_type, dp->link->sink_count,
+		dp->dp_display.is_connected, dp->core_initialized,
+		dp->phy_initialized, dp_display->power_on);
 
 	mutex_unlock(&dp->event_mutex);
 
@@ -1364,8 +1391,9 @@ static int dp_pm_suspend(struct device *dev)
 
 	mutex_lock(&dp->event_mutex);
 
-	DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
-			dp->core_initialized, dp_display->power_on);
+	DRM_DEBUG_DP("Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized, dp_display->power_on);
 
 	/* mainlink enabled */
 	if (dp_power_clk_status(dp->power, DP_CTRL_PM))
@@ -1378,8 +1406,9 @@ static int dp_pm_suspend(struct device *dev)
 
 	dp->hpd_state = ST_SUSPENDED;
 
-	DRM_DEBUG_DP("After, core_inited=%d power_on=%d\n",
-			dp->core_initialized, dp_display->power_on);
+	DRM_DEBUG_DP("After, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
+		dp->dp_display.connector_type, dp->core_initialized,
+		dp->phy_initialized, dp_display->power_on);
 
 	mutex_unlock(&dp->event_mutex);
 
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH] drm/msm/dp: add connector type to enhance debug messages

[Stephen Boyd]

Quoting Kuogee Hsieh (2022-01-24 14:44:52)
> DP driver is a generic driver which supports both eDP and DP.
> For debugging purpose it is required to have capabilities to
> differentiate message are generated from eDP or DP. This patch
> add connector type into debug messages for this purpose.
>
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> ---
>  drivers/gpu/drm/msm/dp/dp_ctrl.c    | 20 +++++------
>  drivers/gpu/drm/msm/dp/dp_display.c | 71 ++++++++++++++++++++++++++-----------
>  2 files changed, 60 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
> index 245e1b9..dcd0126 100644
> --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
> +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
> @@ -1396,6 +1396,8 @@ void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl)
>
>         dp_catalog_ctrl_phy_reset(ctrl->catalog);
>         phy_init(phy);
> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> +                       phy, phy->init_count, phy->power_count);
>  }
>
>  void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
> @@ -1410,6 +1412,8 @@ void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
>
>         dp_catalog_ctrl_phy_reset(ctrl->catalog);
>         phy_exit(phy);
> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> +                       phy, phy->init_count, phy->power_count);
>  }
>
>  static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
> @@ -1484,6 +1488,8 @@ static int dp_ctrl_deinitialize_mainlink(struct dp_ctrl_private *ctrl)
>         phy_exit(phy);
>         phy_init(phy);
>
> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> +                       phy, phy->init_count, phy->power_count);
>         return 0;
>  }
>

These are entirely new messages. Adding messages isn't mentioned in the
commit text. Please either split this out or indicate in the commit text
what's going on here.

> @@ -1895,14 +1901,12 @@ int dp_ctrl_off_link_stream(struct dp_ctrl *dp_ctrl)
>
>         phy_power_off(phy);
>
> -       DRM_DEBUG_DP("After, phy=%x init_count=%d power_on=%d\n",
> -               (u32)(uintptr_t)phy, phy->init_count, phy->power_count);
> -
>         /* aux channel down, reinit phy */
>         phy_exit(phy);
>         phy_init(phy);
>
> -       DRM_DEBUG_DP("DP off link/stream done\n");
> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",

The DRM_DEBUG_DP macro says it's deprecated now and we should use
drm_dbg_dp() instead. Can you use that macro instead? Then it looks like
drm->dev can actually be any old struct device, so I guess we're allowed
to pass in the particular instance of dp device this is for. Allowing us
to figure out which DP device is actually printing messages.

> +                       phy, phy->init_count, phy->power_count);
>         return ret;
>  }
>

Re: [PATCH] drm/msm/dp: add connector type to enhance debug messages

[Kuogee Hsieh]

On 1/24/2022 5:50 PM, Stephen Boyd wrote:
> Quoting Kuogee Hsieh (2022-01-24 14:44:52)
>> DP driver is a generic driver which supports both eDP and DP.
>> For debugging purpose it is required to have capabilities to
>> differentiate message are generated from eDP or DP. This patch
>> add connector type into debug messages for this purpose.
>>
>> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
>> ---
>>   drivers/gpu/drm/msm/dp/dp_ctrl.c    | 20 +++++------
>>   drivers/gpu/drm/msm/dp/dp_display.c | 71 ++++++++++++++++++++++++++-----------
>>   2 files changed, 60 insertions(+), 31 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
>> index 245e1b9..dcd0126 100644
>> --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
>> +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
>> @@ -1396,6 +1396,8 @@ void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl)
>>
>>          dp_catalog_ctrl_phy_reset(ctrl->catalog);
>>          phy_init(phy);
>> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
>> +                       phy, phy->init_count, phy->power_count);
>>   }
>>
>>   void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
>> @@ -1410,6 +1412,8 @@ void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
>>
>>          dp_catalog_ctrl_phy_reset(ctrl->catalog);
>>          phy_exit(phy);
>> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
>> +                       phy, phy->init_count, phy->power_count);
>>   }
>>
>>   static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
>> @@ -1484,6 +1488,8 @@ static int dp_ctrl_deinitialize_mainlink(struct dp_ctrl_private *ctrl)
>>          phy_exit(phy);
>>          phy_init(phy);
>>
>> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
>> +                       phy, phy->init_count, phy->power_count);
>>          return 0;
>>   }
>>
> These are entirely new messages. Adding messages isn't mentioned in the
> commit text. Please either split this out or indicate in the commit text
> what's going on here.
>
>> @@ -1895,14 +1901,12 @@ int dp_ctrl_off_link_stream(struct dp_ctrl *dp_ctrl)
>>
>>          phy_power_off(phy);
>>
>> -       DRM_DEBUG_DP("After, phy=%x init_count=%d power_on=%d\n",
>> -               (u32)(uintptr_t)phy, phy->init_count, phy->power_count);
>> -
>>          /* aux channel down, reinit phy */
>>          phy_exit(phy);
>>          phy_init(phy);
>>
>> -       DRM_DEBUG_DP("DP off link/stream done\n");
>> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> The DRM_DEBUG_DP macro says it's deprecated now and we should use
> drm_dbg_dp() instead. Can you use that macro instead? Then it looks like
> drm->dev can actually be any old struct device, so I guess we're allowed
> to pass in the particular instance of dp device this is for. Allowing us
> to figure out which DP device is actually printing messages.
where it say "deprecated"?
>> +                       phy, phy->init_count, phy->power_count);
>>          return ret;
>>   }
>>

Re: [PATCH] drm/msm/dp: add connector type to enhance debug messages

[Dmitry Baryshkov]

On Tue, 25 Jan 2022 at 21:26, Kuogee Hsieh <quic_khsieh@quicinc.com> wrote:
>
>
> On 1/24/2022 5:50 PM, Stephen Boyd wrote:
> > Quoting Kuogee Hsieh (2022-01-24 14:44:52)
> >> DP driver is a generic driver which supports both eDP and DP.
> >> For debugging purpose it is required to have capabilities to
> >> differentiate message are generated from eDP or DP. This patch
> >> add connector type into debug messages for this purpose.
> >>
> >> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> >> ---
> >>   drivers/gpu/drm/msm/dp/dp_ctrl.c    | 20 +++++------
> >>   drivers/gpu/drm/msm/dp/dp_display.c | 71 ++++++++++++++++++++++++++-----------
> >>   2 files changed, 60 insertions(+), 31 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
> >> index 245e1b9..dcd0126 100644
> >> --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
> >> +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
> >> @@ -1396,6 +1396,8 @@ void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl)
> >>
> >>          dp_catalog_ctrl_phy_reset(ctrl->catalog);
> >>          phy_init(phy);
> >> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> >> +                       phy, phy->init_count, phy->power_count);
> >>   }
> >>
> >>   void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
> >> @@ -1410,6 +1412,8 @@ void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
> >>
> >>          dp_catalog_ctrl_phy_reset(ctrl->catalog);
> >>          phy_exit(phy);
> >> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> >> +                       phy, phy->init_count, phy->power_count);
> >>   }
> >>
> >>   static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
> >> @@ -1484,6 +1488,8 @@ static int dp_ctrl_deinitialize_mainlink(struct dp_ctrl_private *ctrl)
> >>          phy_exit(phy);
> >>          phy_init(phy);
> >>
> >> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> >> +                       phy, phy->init_count, phy->power_count);
> >>          return 0;
> >>   }
> >>
> > These are entirely new messages. Adding messages isn't mentioned in the
> > commit text. Please either split this out or indicate in the commit text
> > what's going on here.
> >
> >> @@ -1895,14 +1901,12 @@ int dp_ctrl_off_link_stream(struct dp_ctrl *dp_ctrl)
> >>
> >>          phy_power_off(phy);
> >>
> >> -       DRM_DEBUG_DP("After, phy=%x init_count=%d power_on=%d\n",
> >> -               (u32)(uintptr_t)phy, phy->init_count, phy->power_count);
> >> -
> >>          /* aux channel down, reinit phy */
> >>          phy_exit(phy);
> >>          phy_init(phy);
> >>
> >> -       DRM_DEBUG_DP("DP off link/stream done\n");
> >> +       DRM_DEBUG_DP("phy=%p init=%d power_on=%d\n",
> > The DRM_DEBUG_DP macro says it's deprecated now and we should use
> > drm_dbg_dp() instead. Can you use that macro instead? Then it looks like
> > drm->dev can actually be any old struct device, so I guess we're allowed
> > to pass in the particular instance of dp device this is for. Allowing us
> > to figure out which DP device is actually printing messages.
> where it say "deprecated"?

Quoting drm_print.h:

/* NOTE: this is deprecated in favor of drm_dbg_dp(NULL, ...). */
#define DRM_DEBUG_DP(fmt, ...)                                          \
        __drm_dbg(DRM_UT_DP, fmt, ## __VA_ARGS__)


> >> +                       phy, phy->init_count, phy->power_count);
> >>          return ret;
> >>   }
> >>



-- 
With best wishes
Dmitry