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, 4 insertions, 4 deletions

diff --git a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
index bdf3e8841a40..4624c0aff51f 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
@@ -293,13 +293,13 @@ static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
 
 	bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
 	gem = drm_fb_dma_get_gem_obj(fb, 0);
-	scrtc->dma[0] = gem->paddr + fb->offsets[0]
+	scrtc->dma[0] = gem->dma_addr + fb->offsets[0]
 		      + y * fb->pitches[0] + x * bpp / 8;
 
 	if (scrtc->format->yuv) {
 		bpp = scrtc->format->bpp - 8;
 		gem = drm_fb_dma_get_gem_obj(fb, 1);
-		scrtc->dma[1] = gem->paddr + fb->offsets[1]
+		scrtc->dma[1] = gem->dma_addr + fb->offsets[1]
 			      + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
 			      + x * (bpp == 16 ? 2 : 1);
 	}
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_plane.c b/drivers/gpu/drm/shmobile/shmob_drm_plane.c
index 6d167e858d86..54228424793a 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_plane.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_plane.c
@@ -46,13 +46,13 @@ static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane,
 
 	bpp = splane->format->yuv ? 8 : splane->format->bpp;
 	gem = drm_fb_dma_get_gem_obj(fb, 0);
-	splane->dma[0] = gem->paddr + fb->offsets[0]
+	splane->dma[0] = gem->dma_addr + fb->offsets[0]
 		       + y * fb->pitches[0] + x * bpp / 8;
 
 	if (splane->format->yuv) {
 		bpp = splane->format->bpp - 8;
 		gem = drm_fb_dma_get_gem_obj(fb, 1);
-		splane->dma[1] = gem->paddr + fb->offsets[1]
+		splane->dma[1] = gem->dma_addr + fb->offsets[1]
 			       + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
 			       + x * (bpp == 16 ? 2 : 1);
 	}