diff mbox series

drm/komeda: Adds internal bpp computing for arm afbc only format YU08 YU10

Message ID 1565073104-24047-1-git-send-email-lowry.li@arm.com (mailing list archive)
State New, archived
Headers show
Series drm/komeda: Adds internal bpp computing for arm afbc only format YU08 YU10 | expand

Commit Message

Lowry Li (Arm Technology China) Aug. 6, 2019, 6:31 a.m. UTC 
From: "Lowry Li (Arm Technology China)" <Lowry.Li@arm.com>

The drm_format_info doesn't have any cpp or block_size (both are zero)
information for arm only afbc format YU08/YU10. we need to compute it
by ourselves.

Changes since v1:
1. Removed redundant warning check in komeda_get_afbc_format_bpp();
2. Removed a redundant empty line;
3. Rebased the branch.

Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
---
 .../gpu/drm/arm/display/komeda/komeda_format_caps.c   | 19 +++++++++++++++++++
 .../gpu/drm/arm/display/komeda/komeda_format_caps.h   |  3 +++
 .../gpu/drm/arm/display/komeda/komeda_framebuffer.c   |  5 +++--
 3 files changed, 25 insertions(+), 2 deletions(-)

Comments

James Qian Wang Aug. 12, 2019, 10:52 a.m. UTC | #1 
On Tue, Aug 06, 2019 at 06:31:56AM +0000, Lowry Li (Arm Technology China) wrote:
> From: "Lowry Li (Arm Technology China)" <Lowry.Li@arm.com>
> 
> The drm_format_info doesn't have any cpp or block_size (both are zero)
> information for arm only afbc format YU08/YU10. we need to compute it
> by ourselves.
> 
> Changes since v1:
> 1. Removed redundant warning check in komeda_get_afbc_format_bpp();
> 2. Removed a redundant empty line;
> 3. Rebased the branch.
> 
> Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
> ---
>  .../gpu/drm/arm/display/komeda/komeda_format_caps.c   | 19 +++++++++++++++++++
>  .../gpu/drm/arm/display/komeda/komeda_format_caps.h   |  3 +++
>  .../gpu/drm/arm/display/komeda/komeda_framebuffer.c   |  5 +++--
>  3 files changed, 25 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
> index cd4d9f5..c9a1edb 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
> @@ -35,6 +35,25 @@
>  	return NULL;
>  }
>  
> +u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info, u64 modifier)
> +{
> +	u32 bpp;
> +
> +	switch (info->format) {
> +	case DRM_FORMAT_YUV420_8BIT:
> +		bpp = 12;
> +		break;
> +	case DRM_FORMAT_YUV420_10BIT:
> +		bpp = 15;
> +		break;
> +	default:
> +		bpp = info->cpp[0] * 8;
> +		break;
> +	}
> +
> +	return bpp;
> +}
> +
>  /* Two assumptions
>   * 1. RGB always has YTR
>   * 2. Tiled RGB always has SC
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
> index 3631910..32273cf 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
> @@ -97,6 +97,9 @@ static inline const char *komeda_get_format_name(u32 fourcc, u64 modifier)
>  komeda_get_format_caps(struct komeda_format_caps_table *table,
>  		       u32 fourcc, u64 modifier);
>  
> +u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
> +			       u64 modifier);
> +
>  u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
>  				  u32 layer_type, u32 *n_fmts);
>  
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
> index 3b0a70e..1b01a62 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
> @@ -43,7 +43,7 @@ static int komeda_fb_create_handle(struct drm_framebuffer *fb,
>  	struct drm_framebuffer *fb = &kfb->base;
>  	const struct drm_format_info *info = fb->format;
>  	struct drm_gem_object *obj;
> -	u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks;
> +	u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks, bpp;
>  	u64 min_size;
>  
>  	obj = drm_gem_object_lookup(file, mode_cmd->handles[0]);
> @@ -88,8 +88,9 @@ static int komeda_fb_create_handle(struct drm_framebuffer *fb,
>  	kfb->offset_payload = ALIGN(n_blocks * AFBC_HEADER_SIZE,
>  				    alignment_header);
>  
> +	bpp = komeda_get_afbc_format_bpp(info, fb->modifier);
>  	kfb->afbc_size = kfb->offset_payload + n_blocks *
> -			 ALIGN(info->cpp[0] * AFBC_SUPERBLK_PIXELS,
> +			 ALIGN(bpp * AFBC_SUPERBLK_PIXELS / 8,
>  			       AFBC_SUPERBLK_ALIGNMENT);
>  	min_size = kfb->afbc_size + fb->offsets[0];
>  	if (min_size > obj->size) {

Looks good to me.

Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
index cd4d9f5..c9a1edb 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
@@ -35,6 +35,25 @@ 
 	return NULL;
 }
 
+u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info, u64 modifier)
+{
+	u32 bpp;
+
+	switch (info->format) {
+	case DRM_FORMAT_YUV420_8BIT:
+		bpp = 12;
+		break;
+	case DRM_FORMAT_YUV420_10BIT:
+		bpp = 15;
+		break;
+	default:
+		bpp = info->cpp[0] * 8;
+		break;
+	}
+
+	return bpp;
+}
+
 /* Two assumptions
  * 1. RGB always has YTR
  * 2. Tiled RGB always has SC
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
index 3631910..32273cf 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
@@ -97,6 +97,9 @@  static inline const char *komeda_get_format_name(u32 fourcc, u64 modifier)
 komeda_get_format_caps(struct komeda_format_caps_table *table,
 		       u32 fourcc, u64 modifier);
 
+u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
+			       u64 modifier);
+
 u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
 				  u32 layer_type, u32 *n_fmts);
 
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
index 3b0a70e..1b01a62 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
@@ -43,7 +43,7 @@  static int komeda_fb_create_handle(struct drm_framebuffer *fb,
 	struct drm_framebuffer *fb = &kfb->base;
 	const struct drm_format_info *info = fb->format;
 	struct drm_gem_object *obj;
-	u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks;
+	u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks, bpp;
 	u64 min_size;
 
 	obj = drm_gem_object_lookup(file, mode_cmd->handles[0]);
@@ -88,8 +88,9 @@  static int komeda_fb_create_handle(struct drm_framebuffer *fb,
 	kfb->offset_payload = ALIGN(n_blocks * AFBC_HEADER_SIZE,
 				    alignment_header);
 
+	bpp = komeda_get_afbc_format_bpp(info, fb->modifier);
 	kfb->afbc_size = kfb->offset_payload + n_blocks *
-			 ALIGN(info->cpp[0] * AFBC_SUPERBLK_PIXELS,
+			 ALIGN(bpp * AFBC_SUPERBLK_PIXELS / 8,
 			       AFBC_SUPERBLK_ALIGNMENT);
 	min_size = kfb->afbc_size + fb->offsets[0];
 	if (min_size > obj->size) {