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/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index 3ce9d4992176..43c72c2604a0 100644
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -782,11 +782,11 @@ static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
 
 	DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
 			 (char *)&fb->format->format,
-			 (unsigned long)dma_obj->paddr);
+			 (unsigned long) dma_obj->dma_addr);
 
 	/* pixel memory location */
 	bpp = fb->format->cpp[0];
-	top_field->gam_gdp_pml = (u32)dma_obj->paddr + fb->offsets[0];
+	top_field->gam_gdp_pml = (u32) dma_obj->dma_addr + fb->offsets[0];
 	top_field->gam_gdp_pml += src_x * bpp;
 	top_field->gam_gdp_pml += src_y * fb->pitches[0];
 
@@ -831,7 +831,7 @@ static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
 	dev_dbg(gdp->dev, "Current NVN:0x%X\n",
 		readl(gdp->regs + GAM_GDP_NVN_OFFSET));
 	dev_dbg(gdp->dev, "Posted buff: %lx current buff: %x\n",
-		(unsigned long)dma_obj->paddr,
+		(unsigned long) dma_obj->dma_addr,
 		readl(gdp->regs + GAM_GDP_PML_OFFSET));
 
 	if (!curr_list) {
diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c
index ee274140274d..02b77279f6e4 100644
--- a/drivers/gpu/drm/sti/sti_hqvdp.c
+++ b/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -1182,11 +1182,11 @@ static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
 
 	DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
 			 (char *)&fb->format->format,
-			 (unsigned long)dma_obj->paddr);
+			 (unsigned long) dma_obj->dma_addr);
 
 	/* Buffer planes address */
-	cmd->top.current_luma = (u32)dma_obj->paddr + fb->offsets[0];
-	cmd->top.current_chroma = (u32)dma_obj->paddr + fb->offsets[1];
+	cmd->top.current_luma = (u32) dma_obj->dma_addr + fb->offsets[0];
+	cmd->top.current_chroma = (u32) dma_obj->dma_addr + fb->offsets[1];
 
 	/* Pitches */
 	cmd->top.luma_processed_pitch = fb->pitches[0];