diff mbox series

[v4,1/4] drm/msm/dpu: Move LM CRC code into separate method

Message ID 20220622171835.7558-2-quic_jesszhan@quicinc.com (mailing list archive)
State New, archived
Headers show
Series Expand CRC to support interface blocks | expand

Commit Message

Jessica Zhang June 22, 2022, 5:18 p.m. UTC 
Move layer mixer-specific section of dpu_crtc_get_crc() into a separate
helper method. This way, we can make it easier to get CRCs from other HW
blocks by adding other get_crc helper methods.

Changes since V1:
- Move common bitmasks to dpu_hw_util.h
- Move common CRC methods to dpu_hw_util.c
- Update copyrights
- Change crcs array to a dynamically allocated array and added it as a
  member of crtc_state

Changes since V2:
- Put changes for hw_util into a separate commit
- Revert crcs array to a static array
- Add else case for set_crc_source to return EINVAL if no valid source
  is selected
- Add DPU_CRTC_MAX_CRC_ENTRIES macro

Changes since V3:
- Move crcs array into dpu_crtc_get_lm_crc
- Remove comment about crcs array in dpu_crtc_state struct
- Revert `lm` rename
- Remove DPU_CRTC_MAX_CRC_ENTRIES macro
- Return EINVAL in dpu_crtc_get_crc if no valid CRC source is set

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 65 +++++++++++++++---------
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h |  2 +
 2 files changed, 43 insertions(+), 24 deletions(-)

Comments

Dmitry Baryshkov June 22, 2022, 5:48 p.m. UTC | #1 
On 22/06/2022 20:18, Jessica Zhang wrote:
> Move layer mixer-specific section of dpu_crtc_get_crc() into a separate
> helper method. This way, we can make it easier to get CRCs from other HW
> blocks by adding other get_crc helper methods.
> 
> Changes since V1:
> - Move common bitmasks to dpu_hw_util.h
> - Move common CRC methods to dpu_hw_util.c
> - Update copyrights
> - Change crcs array to a dynamically allocated array and added it as a
>    member of crtc_state
> 
> Changes since V2:
> - Put changes for hw_util into a separate commit
> - Revert crcs array to a static array
> - Add else case for set_crc_source to return EINVAL if no valid source
>    is selected
> - Add DPU_CRTC_MAX_CRC_ENTRIES macro
> 
> Changes since V3:
> - Move crcs array into dpu_crtc_get_lm_crc
> - Remove comment about crcs array in dpu_crtc_state struct
> - Revert `lm` rename
> - Remove DPU_CRTC_MAX_CRC_ENTRIES macro
> - Return EINVAL in dpu_crtc_get_crc if no valid CRC source is set
> 
> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 65 +++++++++++++++---------
>   drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h |  2 +
>   2 files changed, 43 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> index b56f777dbd0e..b57140c3671a 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -1,5 +1,6 @@
>   // SPDX-License-Identifier: GPL-2.0-only
>   /*
> + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
>    * Copyright (c) 2014-2021 The Linux Foundation. All rights reserved.
>    * Copyright (C) 2013 Red Hat
>    * Author: Rob Clark <robdclark@gmail.com>
> @@ -99,17 +100,32 @@ static int dpu_crtc_verify_crc_source(struct drm_crtc *crtc,
>   	return 0;
>   }
>   
> +static void dpu_crtc_setup_lm_misr(struct dpu_crtc_state *crtc_state)
> +{
> +	struct dpu_crtc_mixer *m;
> +	int i;
> +
> +	for (i = 0; i < crtc_state->num_mixers; ++i) {
> +		m = &crtc_state->mixers[i];
> +
> +		if (!m->hw_lm || !m->hw_lm->ops.setup_misr)
> +			continue;
> +
> +		/* Calculate MISR over 1 frame */
> +		m->hw_lm->ops.setup_misr(m->hw_lm, true, 1);
> +	}
> +}
> +
>   static int dpu_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name)
>   {
>   	enum dpu_crtc_crc_source source = dpu_crtc_parse_crc_source(src_name);
>   	enum dpu_crtc_crc_source current_source;
>   	struct dpu_crtc_state *crtc_state;
>   	struct drm_device *drm_dev = crtc->dev;
> -	struct dpu_crtc_mixer *m;
>   
>   	bool was_enabled;
>   	bool enable = false;
> -	int i, ret = 0;
> +	int ret = 0;
>   
>   	if (source < 0) {
>   		DRM_DEBUG_DRIVER("Invalid CRC source %s for CRTC%d\n", src_name, crtc->index);
> @@ -146,16 +162,10 @@ static int dpu_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name)
>   
>   	crtc_state->crc_frame_skip_count = 0;
>   
> -	for (i = 0; i < crtc_state->num_mixers; ++i) {
> -		m = &crtc_state->mixers[i];
> -
> -		if (!m->hw_lm || !m->hw_lm->ops.setup_misr)
> -			continue;
> -
> -		/* Calculate MISR over 1 frame */
> -		m->hw_lm->ops.setup_misr(m->hw_lm, true, 1);
> -	}
> -
> +	if (source == DPU_CRTC_CRC_SOURCE_LAYER_MIXER)
> +		dpu_crtc_setup_lm_misr(crtc_state);
> +	else
> +		ret = -EINVAL;
>   
>   cleanup:
>   	drm_modeset_unlock(&crtc->mutex);
> @@ -174,26 +184,17 @@ static u32 dpu_crtc_get_vblank_counter(struct drm_crtc *crtc)
>   	return dpu_encoder_get_vsync_count(encoder);
>   }
>   
> -
> -static int dpu_crtc_get_crc(struct drm_crtc *crtc)
> +static int dpu_crtc_get_lm_crc(struct drm_crtc *crtc,
> +		struct dpu_crtc_state *crtc_state)
>   {
> -	struct dpu_crtc_state *crtc_state;
>   	struct dpu_crtc_mixer *m;
>   	u32 crcs[CRTC_DUAL_MIXERS];
>   
> -	int i = 0;
>   	int rc = 0;
> -
> -	crtc_state = to_dpu_crtc_state(crtc->state);
> +	int i;
>   
>   	BUILD_BUG_ON(ARRAY_SIZE(crcs) != ARRAY_SIZE(crtc_state->mixers));
>   
> -	/* Skip first 2 frames in case of "uncooked" CRCs */
> -	if (crtc_state->crc_frame_skip_count < 2) {
> -		crtc_state->crc_frame_skip_count++;
> -		return 0;
> -	}
> -
>   	for (i = 0; i < crtc_state->num_mixers; ++i) {
>   
>   		m = &crtc_state->mixers[i];
> @@ -214,6 +215,22 @@ static int dpu_crtc_get_crc(struct drm_crtc *crtc)
>   			drm_crtc_accurate_vblank_count(crtc), crcs);
>   }
>   
> +static int dpu_crtc_get_crc(struct drm_crtc *crtc)
> +{
> +	struct dpu_crtc_state *crtc_state = to_dpu_crtc_state(crtc->state);
> +
> +	/* Skip first 2 frames in case of "uncooked" CRCs */
> +	if (crtc_state->crc_frame_skip_count < 2) {
> +		crtc_state->crc_frame_skip_count++;
> +		return 0;
> +	}
> +
> +	if (crtc_state->crc_source == DPU_CRTC_CRC_SOURCE_LAYER_MIXER)
> +		return dpu_crtc_get_lm_crc(crtc, crtc_state);
> +
> +	return -EINVAL;
> +}
> +
>   static bool dpu_crtc_get_scanout_position(struct drm_crtc *crtc,
>   					   bool in_vblank_irq,
>   					   int *vpos, int *hpos,
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> index b8785c394fcc..20df23fe74ed 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> @@ -201,6 +201,8 @@ struct dpu_crtc {
>    * @mixers        : List of active mixers
>    * @num_ctls      : Number of ctl paths in use
>    * @hw_ctls       : List of active ctl paths
> + * @crc_source    : CRC source
> + * @crc_frame_skip_count: Number of frames skipped before getting CRC
>    */
>   struct dpu_crtc_state {
>   	struct drm_crtc_state base;
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index b56f777dbd0e..b57140c3671a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1,5 +1,6 @@ 
 // SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2014-2021 The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
@@ -99,17 +100,32 @@  static int dpu_crtc_verify_crc_source(struct drm_crtc *crtc,
 	return 0;
 }
 
+static void dpu_crtc_setup_lm_misr(struct dpu_crtc_state *crtc_state)
+{
+	struct dpu_crtc_mixer *m;
+	int i;
+
+	for (i = 0; i < crtc_state->num_mixers; ++i) {
+		m = &crtc_state->mixers[i];
+
+		if (!m->hw_lm || !m->hw_lm->ops.setup_misr)
+			continue;
+
+		/* Calculate MISR over 1 frame */
+		m->hw_lm->ops.setup_misr(m->hw_lm, true, 1);
+	}
+}
+
 static int dpu_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name)
 {
 	enum dpu_crtc_crc_source source = dpu_crtc_parse_crc_source(src_name);
 	enum dpu_crtc_crc_source current_source;
 	struct dpu_crtc_state *crtc_state;
 	struct drm_device *drm_dev = crtc->dev;
-	struct dpu_crtc_mixer *m;
 
 	bool was_enabled;
 	bool enable = false;
-	int i, ret = 0;
+	int ret = 0;
 
 	if (source < 0) {
 		DRM_DEBUG_DRIVER("Invalid CRC source %s for CRTC%d\n", src_name, crtc->index);
@@ -146,16 +162,10 @@  static int dpu_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name)
 
 	crtc_state->crc_frame_skip_count = 0;
 
-	for (i = 0; i < crtc_state->num_mixers; ++i) {
-		m = &crtc_state->mixers[i];
-
-		if (!m->hw_lm || !m->hw_lm->ops.setup_misr)
-			continue;
-
-		/* Calculate MISR over 1 frame */
-		m->hw_lm->ops.setup_misr(m->hw_lm, true, 1);
-	}
-
+	if (source == DPU_CRTC_CRC_SOURCE_LAYER_MIXER)
+		dpu_crtc_setup_lm_misr(crtc_state);
+	else
+		ret = -EINVAL;
 
 cleanup:
 	drm_modeset_unlock(&crtc->mutex);
@@ -174,26 +184,17 @@  static u32 dpu_crtc_get_vblank_counter(struct drm_crtc *crtc)
 	return dpu_encoder_get_vsync_count(encoder);
 }
 
-
-static int dpu_crtc_get_crc(struct drm_crtc *crtc)
+static int dpu_crtc_get_lm_crc(struct drm_crtc *crtc,
+		struct dpu_crtc_state *crtc_state)
 {
-	struct dpu_crtc_state *crtc_state;
 	struct dpu_crtc_mixer *m;
 	u32 crcs[CRTC_DUAL_MIXERS];
 
-	int i = 0;
 	int rc = 0;
-
-	crtc_state = to_dpu_crtc_state(crtc->state);
+	int i;
 
 	BUILD_BUG_ON(ARRAY_SIZE(crcs) != ARRAY_SIZE(crtc_state->mixers));
 
-	/* Skip first 2 frames in case of "uncooked" CRCs */
-	if (crtc_state->crc_frame_skip_count < 2) {
-		crtc_state->crc_frame_skip_count++;
-		return 0;
-	}
-
 	for (i = 0; i < crtc_state->num_mixers; ++i) {
 
 		m = &crtc_state->mixers[i];
@@ -214,6 +215,22 @@  static int dpu_crtc_get_crc(struct drm_crtc *crtc)
 			drm_crtc_accurate_vblank_count(crtc), crcs);
 }
 
+static int dpu_crtc_get_crc(struct drm_crtc *crtc)
+{
+	struct dpu_crtc_state *crtc_state = to_dpu_crtc_state(crtc->state);
+
+	/* Skip first 2 frames in case of "uncooked" CRCs */
+	if (crtc_state->crc_frame_skip_count < 2) {
+		crtc_state->crc_frame_skip_count++;
+		return 0;
+	}
+
+	if (crtc_state->crc_source == DPU_CRTC_CRC_SOURCE_LAYER_MIXER)
+		return dpu_crtc_get_lm_crc(crtc, crtc_state);
+
+	return -EINVAL;
+}
+
 static bool dpu_crtc_get_scanout_position(struct drm_crtc *crtc,
 					   bool in_vblank_irq,
 					   int *vpos, int *hpos,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
index b8785c394fcc..20df23fe74ed 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
@@ -201,6 +201,8 @@  struct dpu_crtc {
  * @mixers        : List of active mixers
  * @num_ctls      : Number of ctl paths in use
  * @hw_ctls       : List of active ctl paths
+ * @crc_source    : CRC source
+ * @crc_frame_skip_count: Number of frames skipped before getting CRC
  */
 struct dpu_crtc_state {
 	struct drm_crtc_state base;