[PATCHv2,2/4] drm/malidp: use afbc helpers
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Message ID 20191104221228.3588-3-andrzej.p@collabora.com
State New
Headers show
Series
  • [PATCHv2,1/4] drm/arm: Factor out generic afbc helpers
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Commit Message

Andrzej Pietrasiewicz Nov. 4, 2019, 10:12 p.m. UTC
There are afbc helpers available.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
---
 drivers/gpu/drm/arm/malidp_drv.c | 66 ++++++--------------------------
 1 file changed, 12 insertions(+), 54 deletions(-)

Comments

Liviu Dudau Nov. 6, 2019, 11:09 a.m. UTC | #1
Hi Andrzej,

On Mon, Nov 04, 2019 at 11:12:26PM +0100, Andrzej Pietrasiewicz wrote:
> There are afbc helpers available.
> 
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
>  drivers/gpu/drm/arm/malidp_drv.c | 66 ++++++--------------------------
>  1 file changed, 12 insertions(+), 54 deletions(-)
> 
> diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
> index 37d92a06318e..ab93588cc8eb 100644
> --- a/drivers/gpu/drm/arm/malidp_drv.c
> +++ b/drivers/gpu/drm/arm/malidp_drv.c
> @@ -15,6 +15,7 @@
>  #include <linux/pm_runtime.h>
>  #include <linux/debugfs.h>
>  
> +#include <drm/drm_afbc.h>
>  #include <drm/drm_atomic.h>
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_crtc.h>
> @@ -35,8 +36,6 @@
>  #include "malidp_hw.h"
>  
>  #define MALIDP_CONF_VALID_TIMEOUT	250
> -#define AFBC_HEADER_SIZE		16
> -#define AFBC_SUPERBLK_ALIGNMENT		128
>  
>  static void malidp_write_gamma_table(struct malidp_hw_device *hwdev,
>  				     u32 data[MALIDP_COEFFTAB_NUM_COEFFS])
> @@ -277,24 +276,8 @@ malidp_verify_afbc_framebuffer_caps(struct drm_device *dev,
>  					mode_cmd->modifier[0]) == false)
>  		return false;
>  
> -	if (mode_cmd->offsets[0] != 0) {
> -		DRM_DEBUG_KMS("AFBC buffers' plane offset should be 0\n");
> -		return false;
> -	}
> -
> -	switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
> -	case AFBC_SIZE_16X16:
> -		if ((mode_cmd->width % 16) || (mode_cmd->height % 16)) {
> -			DRM_DEBUG_KMS("AFBC buffers must be aligned to 16 pixels\n");
> -			return false;
> -		}
> -		break;
> -	default:
> -		DRM_DEBUG_KMS("Unsupported AFBC block size\n");
> -		return false;
> -	}
> -
> -	return true;
> +	return drm_afbc_check_offset(dev, mode_cmd) &&
> +	       drm_afbc_check_size_align(dev, mode_cmd);
>  }

Given that the content of this function gets copied pretty much verbatim into the new
drm_afbc.c file, I suggest you make the change in the 1/4 patch and also update the
copyright statement in that file to show that the code originated from here.

Best regards,
Liviu

>  
>  static bool
> @@ -302,54 +285,29 @@ malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
>  				    struct drm_file *file,
>  				    const struct drm_mode_fb_cmd2 *mode_cmd)
>  {
> -	int n_superblocks = 0;
>  	const struct drm_format_info *info;
>  	struct drm_gem_object *objs = NULL;
> -	u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
> -	u32 afbc_superblock_width = 0, afbc_size = 0;
>  	int bpp = 0;
> -
> -	switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
> -	case AFBC_SIZE_16X16:
> -		afbc_superblock_height = 16;
> -		afbc_superblock_width = 16;
> -		break;
> -	default:
> -		DRM_DEBUG_KMS("AFBC superblock size is not supported\n");
> -		return false;
> -	}
> +	u32 w, h;
>  
>  	info = drm_get_format_info(dev, mode_cmd);
> -
> -	n_superblocks = (mode_cmd->width / afbc_superblock_width) *
> -		(mode_cmd->height / afbc_superblock_height);
> -
>  	bpp = malidp_format_get_bpp(info->format);
>  
> -	afbc_superblock_size = (bpp * afbc_superblock_width * afbc_superblock_height)
> -				/ BITS_PER_BYTE;
> -
> -	afbc_size = ALIGN(n_superblocks * AFBC_HEADER_SIZE, AFBC_SUPERBLK_ALIGNMENT);
> -	afbc_size += n_superblocks * ALIGN(afbc_superblock_size, AFBC_SUPERBLK_ALIGNMENT);
> -
> -	if ((mode_cmd->width * bpp) != (mode_cmd->pitches[0] * BITS_PER_BYTE)) {
> -		DRM_DEBUG_KMS("Invalid value of (pitch * BITS_PER_BYTE) (=%u) "
> -			      "should be same as width (=%u) * bpp (=%u)\n",
> -			      (mode_cmd->pitches[0] * BITS_PER_BYTE),
> -			      mode_cmd->width, bpp);
> -		return false;
> -	}
> -
>  	objs = drm_gem_object_lookup(file, mode_cmd->handles[0]);
>  	if (!objs) {
>  		DRM_DEBUG_KMS("Failed to lookup GEM object\n");
>  		return false;
>  	}
>  
> -	if (objs->size < afbc_size) {
> -		DRM_DEBUG_KMS("buffer size (%zu) too small for AFBC buffer size = %u\n",
> -			      objs->size, afbc_size);
> +	if (!drm_afbc_get_superblk_wh(mode_cmd->modifier[0], &w, &h))
> +		return false;
> +
> +	if (!drm_afbc_check_fb_size(mode_cmd->pitches[0], bpp,
> +				    mode_cmd->width, mode_cmd->height, w, h,
> +				    objs->size, mode_cmd->offsets[0],
> +				    AFBC_SUPERBLK_ALIGNMENT)) {
>  		drm_gem_object_put_unlocked(objs);
> +
>  		return false;
>  	}
>  
> -- 
> 2.17.1
>

Patch
diff mbox series

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index 37d92a06318e..ab93588cc8eb 100644
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -15,6 +15,7 @@ 
 #include <linux/pm_runtime.h>
 #include <linux/debugfs.h>
 
+#include <drm/drm_afbc.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
@@ -35,8 +36,6 @@ 
 #include "malidp_hw.h"
 
 #define MALIDP_CONF_VALID_TIMEOUT	250
-#define AFBC_HEADER_SIZE		16
-#define AFBC_SUPERBLK_ALIGNMENT		128
 
 static void malidp_write_gamma_table(struct malidp_hw_device *hwdev,
 				     u32 data[MALIDP_COEFFTAB_NUM_COEFFS])
@@ -277,24 +276,8 @@  malidp_verify_afbc_framebuffer_caps(struct drm_device *dev,
 					mode_cmd->modifier[0]) == false)
 		return false;
 
-	if (mode_cmd->offsets[0] != 0) {
-		DRM_DEBUG_KMS("AFBC buffers' plane offset should be 0\n");
-		return false;
-	}
-
-	switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
-	case AFBC_SIZE_16X16:
-		if ((mode_cmd->width % 16) || (mode_cmd->height % 16)) {
-			DRM_DEBUG_KMS("AFBC buffers must be aligned to 16 pixels\n");
-			return false;
-		}
-		break;
-	default:
-		DRM_DEBUG_KMS("Unsupported AFBC block size\n");
-		return false;
-	}
-
-	return true;
+	return drm_afbc_check_offset(dev, mode_cmd) &&
+	       drm_afbc_check_size_align(dev, mode_cmd);
 }
 
 static bool
@@ -302,54 +285,29 @@  malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
 				    struct drm_file *file,
 				    const struct drm_mode_fb_cmd2 *mode_cmd)
 {
-	int n_superblocks = 0;
 	const struct drm_format_info *info;
 	struct drm_gem_object *objs = NULL;
-	u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
-	u32 afbc_superblock_width = 0, afbc_size = 0;
 	int bpp = 0;
-
-	switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
-	case AFBC_SIZE_16X16:
-		afbc_superblock_height = 16;
-		afbc_superblock_width = 16;
-		break;
-	default:
-		DRM_DEBUG_KMS("AFBC superblock size is not supported\n");
-		return false;
-	}
+	u32 w, h;
 
 	info = drm_get_format_info(dev, mode_cmd);
-
-	n_superblocks = (mode_cmd->width / afbc_superblock_width) *
-		(mode_cmd->height / afbc_superblock_height);
-
 	bpp = malidp_format_get_bpp(info->format);
 
-	afbc_superblock_size = (bpp * afbc_superblock_width * afbc_superblock_height)
-				/ BITS_PER_BYTE;
-
-	afbc_size = ALIGN(n_superblocks * AFBC_HEADER_SIZE, AFBC_SUPERBLK_ALIGNMENT);
-	afbc_size += n_superblocks * ALIGN(afbc_superblock_size, AFBC_SUPERBLK_ALIGNMENT);
-
-	if ((mode_cmd->width * bpp) != (mode_cmd->pitches[0] * BITS_PER_BYTE)) {
-		DRM_DEBUG_KMS("Invalid value of (pitch * BITS_PER_BYTE) (=%u) "
-			      "should be same as width (=%u) * bpp (=%u)\n",
-			      (mode_cmd->pitches[0] * BITS_PER_BYTE),
-			      mode_cmd->width, bpp);
-		return false;
-	}
-
 	objs = drm_gem_object_lookup(file, mode_cmd->handles[0]);
 	if (!objs) {
 		DRM_DEBUG_KMS("Failed to lookup GEM object\n");
 		return false;
 	}
 
-	if (objs->size < afbc_size) {
-		DRM_DEBUG_KMS("buffer size (%zu) too small for AFBC buffer size = %u\n",
-			      objs->size, afbc_size);
+	if (!drm_afbc_get_superblk_wh(mode_cmd->modifier[0], &w, &h))
+		return false;
+
+	if (!drm_afbc_check_fb_size(mode_cmd->pitches[0], bpp,
+				    mode_cmd->width, mode_cmd->height, w, h,
+				    objs->size, mode_cmd->offsets[0],
+				    AFBC_SUPERBLK_ALIGNMENT)) {
 		drm_gem_object_put_unlocked(objs);
+
 		return false;
 	}