drm/gem: rename struct drm_gem_dma_object.{paddr => dma_addr}

The field paddr of struct drm_gem_dma_object holds a DMA address, which
might actually be a physical address. However, depending on the platform,
it can also be a bus address or a virtual address managed by an IOMMU.

Hence, rename the field to dma_addr, which is more applicable.

In order to do this renaming the following coccinelle script was used:

```
	@@
	struct drm_gem_dma_object *gem;
	@@

	- gem->paddr
	+ gem->dma_addr

	@@
	struct drm_gem_dma_object gem;
	@@

	- gem.paddr
	+ gem.dma_addr

	@exists@
	typedef dma_addr_t;
	symbol paddr;
	@@

	dma_addr_t paddr;
	<...
	- paddr
	+ dma_addr
	...>

	@@
	symbol paddr;
	@@
	dma_addr_t
	- paddr
	+ dma_addr
	;

```

This patch is compile-time tested with:

```
	make ARCH={x86_64,arm,arm64} allyesconfig
	make ARCH={x86_64,arm,arm64} drivers/gpu/drm`
```

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220802000405.949236-5-dakr@redhat.com

2 files changed, 6 insertions, 6 deletions

diff --git a/drivers/gpu/drm/imx/dcss/dcss-plane.c b/drivers/gpu/drm/imx/dcss/dcss-plane.c
index 4c41c93ac900..ab6d32bad756 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-plane.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-plane.c
@@ -224,20 +224,20 @@ static void dcss_plane_atomic_set_base(struct dcss_plane *dcss_plane)
 	if (!format->is_yuv ||
 	    format->format == DRM_FORMAT_NV12 ||
 	    format->format == DRM_FORMAT_NV21)
-		p1_ba = dma_obj->paddr + fb->offsets[0] +
+		p1_ba = dma_obj->dma_addr + fb->offsets[0] +
 			fb->pitches[0] * (state->src.y1 >> 16) +
 			format->char_per_block[0] * (state->src.x1 >> 16);
 	else if (format->format == DRM_FORMAT_UYVY ||
 		 format->format == DRM_FORMAT_VYUY ||
 		 format->format == DRM_FORMAT_YUYV ||
 		 format->format == DRM_FORMAT_YVYU)
-		p1_ba = dma_obj->paddr + fb->offsets[0] +
+		p1_ba = dma_obj->dma_addr + fb->offsets[0] +
 			fb->pitches[0] * (state->src.y1 >> 16) +
 			2 * format->char_per_block[0] * (state->src.x1 >> 17);
 
 	if (format->format == DRM_FORMAT_NV12 ||
 	    format->format == DRM_FORMAT_NV21)
-		p2_ba = dma_obj->paddr + fb->offsets[1] +
+		p2_ba = dma_obj->dma_addr + fb->offsets[1] +
 			(((fb->pitches[1] >> 1) * (state->src.y1 >> 17) +
 			(state->src.x1 >> 17)) << 1);
 
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index 07c0b9def383..dba4f7d81d69 100644
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -132,7 +132,7 @@ drm_plane_state_to_eba(struct drm_plane_state *state, int plane)
 	dma_obj = drm_fb_dma_get_gem_obj(fb, plane);
 	BUG_ON(!dma_obj);
 
-	return dma_obj->paddr + fb->offsets[plane] + fb->pitches[plane] * y +
+	return dma_obj->dma_addr + fb->offsets[plane] + fb->pitches[plane] * y +
 	       fb->format->cpp[plane] * x;
 }
 
@@ -151,7 +151,7 @@ drm_plane_state_to_ubo(struct drm_plane_state *state)
 	x /= fb->format->hsub;
 	y /= fb->format->vsub;
 
-	return dma_obj->paddr + fb->offsets[1] + fb->pitches[1] * y +
+	return dma_obj->dma_addr + fb->offsets[1] + fb->pitches[1] * y +
 	       fb->format->cpp[1] * x - eba;
 }
 
@@ -170,7 +170,7 @@ drm_plane_state_to_vbo(struct drm_plane_state *state)
 	x /= fb->format->hsub;
 	y /= fb->format->vsub;
 
-	return dma_obj->paddr + fb->offsets[2] + fb->pitches[2] * y +
+	return dma_obj->dma_addr + fb->offsets[2] + fb->pitches[2] * y +
 	       fb->format->cpp[2] * x - eba;
 }