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

1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c
index 6f3fa37b9ca0..ad93acc9abd2 100644
--- a/drivers/gpu/drm/tidss/tidss_dispc.c
+++ b/drivers/gpu/drm/tidss/tidss_dispc.c
@@ -1954,7 +1954,7 @@ int dispc_plane_check(struct dispc_device *dispc, u32 hw_plane,
 }
 
 static
-dma_addr_t dispc_plane_state_paddr(const struct drm_plane_state *state)
+dma_addr_t dispc_plane_state_dma_addr(const struct drm_plane_state *state)
 {
 	struct drm_framebuffer *fb = state->fb;
 	struct drm_gem_dma_object *gem;
@@ -1963,7 +1963,7 @@ dma_addr_t dispc_plane_state_paddr(const struct drm_plane_state *state)
 
 	gem = drm_fb_dma_get_gem_obj(state->fb, 0);
 
-	return gem->paddr + fb->offsets[0] + x * fb->format->cpp[0] +
+	return gem->dma_addr + fb->offsets[0] + x * fb->format->cpp[0] +
 		y * fb->pitches[0];
 }
 
@@ -1980,7 +1980,7 @@ dma_addr_t dispc_plane_state_p_uv_addr(const struct drm_plane_state *state)
 
 	gem = drm_fb_dma_get_gem_obj(fb, 1);
 
-	return gem->paddr + fb->offsets[1] +
+	return gem->dma_addr + fb->offsets[1] +
 		(x * fb->format->cpp[1] / fb->format->hsub) +
 		(y * fb->pitches[1] / fb->format->vsub);
 }
@@ -1993,17 +1993,17 @@ int dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
 	u32 fourcc = state->fb->format->format;
 	u16 cpp = state->fb->format->cpp[0];
 	u32 fb_width = state->fb->pitches[0] / cpp;
-	dma_addr_t paddr = dispc_plane_state_paddr(state);
+	dma_addr_t dma_addr = dispc_plane_state_dma_addr(state);
 	struct dispc_scaling_params scale;
 
 	dispc_vid_calc_scaling(dispc, state, &scale, lite);
 
 	dispc_plane_set_pixel_format(dispc, hw_plane, fourcc);
 
-	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_0, paddr & 0xffffffff);
-	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_EXT_0, (u64)paddr >> 32);
-	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_1, paddr & 0xffffffff);
-	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_EXT_1, (u64)paddr >> 32);
+	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_0, dma_addr & 0xffffffff);
+	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_EXT_0, (u64)dma_addr >> 32);
+	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_1, dma_addr & 0xffffffff);
+	dispc_vid_write(dispc, hw_plane, DISPC_VID_BA_EXT_1, (u64)dma_addr >> 32);
 
 	dispc_vid_write(dispc, hw_plane, DISPC_VID_PICTURE_SIZE,
 			(scale.in_w - 1) | ((scale.in_h - 1) << 16));