drm: omapdrm: Rename occurrences of paddr to dma_addr

The fields, variables and functions deal with DMA addresses, name them
accordingly. The omap_gem_get_paddr() and omap_gem_put_paddr() will be
addressed differently separately.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/omap_drv.h

@@ -188,14 +188,14 @@ int omap_gem_roll(struct drm_gem_object *obj, uint32_t roll);
 void omap_gem_cpu_sync(struct drm_gem_object *obj, int pgoff);
 void omap_gem_dma_sync(struct drm_gem_object *obj,
 		enum dma_data_direction dir);
-int omap_gem_get_paddr(struct drm_gem_object *obj, dma_addr_t *paddr);
+int omap_gem_get_paddr(struct drm_gem_object *obj, dma_addr_t *dma_addr);
 void omap_gem_put_paddr(struct drm_gem_object *obj);
 int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
 		bool remap);
 int omap_gem_put_pages(struct drm_gem_object *obj);
 uint32_t omap_gem_flags(struct drm_gem_object *obj);
-int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
-		int x, int y, dma_addr_t *paddr);
+int omap_gem_rotated_dma_addr(struct drm_gem_object *obj, uint32_t orient,
+		int x, int y, dma_addr_t *dma_addr);
 uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
 size_t omap_gem_mmap_size(struct drm_gem_object *obj);
 int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);

drivers/gpu/drm/omapdrm/omap_fb.c

@@ -74,7 +74,7 @@ struct plane {
 	struct drm_gem_object *bo;
 	uint32_t pitch;
 	uint32_t offset;
-	dma_addr_t paddr;
+	dma_addr_t dma_addr;
 };
 
 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
@@ -85,7 +85,7 @@ struct omap_framebuffer {
 	const struct drm_format_info *format;
 	enum omap_color_mode dss_format;
 	struct plane planes[2];
-	/* lock for pinning (pin_count and planes.paddr) */
+	/* lock for pinning (pin_count and planes.dma_addr) */
 	struct mutex lock;
 };
 
@@ -130,7 +130,7 @@ static uint32_t get_linear_addr(struct plane *plane,
 	       + (x * format->cpp[n] / (n == 0 ? 1 : format->hsub))
 	       + (y * plane->pitch / (n == 0 ? 1 : format->vsub));
 
-	return plane->paddr + offset;
+	return plane->dma_addr + offset;
 }
 
 bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
@@ -201,7 +201,8 @@ void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 		if (orient & MASK_X_INVERT)
 			x += w - 1;
 
-		omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
+		omap_gem_rotated_dma_addr(plane->bo, orient, x, y,
+					  &info->paddr);
 		info->rotation_type = OMAP_DSS_ROT_TILER;
 		info->screen_width  = omap_gem_tiled_stride(plane->bo, orient);
 	} else {
@@ -232,8 +233,8 @@ void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 
 		if (info->rotation_type == OMAP_DSS_ROT_TILER) {
 			WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
-			omap_gem_rotated_paddr(plane->bo, orient,
-					x/2, y/2, &info->p_uv_addr);
+			omap_gem_rotated_dma_addr(plane->bo, orient, x/2, y/2,
+						  &info->p_uv_addr);
 		} else {
 			info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
 		}
@@ -258,7 +259,7 @@ int omap_framebuffer_pin(struct drm_framebuffer *fb)
 
 	for (i = 0; i < n; i++) {
 		struct plane *plane = &omap_fb->planes[i];
-		ret = omap_gem_get_paddr(plane->bo, &plane->paddr);
+		ret = omap_gem_get_paddr(plane->bo, &plane->dma_addr);
 		if (ret)
 			goto fail;
 		omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
@@ -274,7 +275,7 @@ int omap_framebuffer_pin(struct drm_framebuffer *fb)
 	for (i--; i >= 0; i--) {
 		struct plane *plane = &omap_fb->planes[i];
 		omap_gem_put_paddr(plane->bo);
-		plane->paddr = 0;
+		plane->dma_addr = 0;
 	}
 
 	mutex_unlock(&omap_fb->lock);
@@ -300,7 +301,7 @@ void omap_framebuffer_unpin(struct drm_framebuffer *fb)
 	for (i = 0; i < n; i++) {
 		struct plane *plane = &omap_fb->planes[i];
 		omap_gem_put_paddr(plane->bo);
-		plane->paddr = 0;
+		plane->dma_addr = 0;
 	}
 
 	mutex_unlock(&omap_fb->lock);
@@ -458,7 +459,7 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
 		plane->bo     = bos[i];
 		plane->offset = mode_cmd->offsets[i];
 		plane->pitch  = pitch;
-		plane->paddr  = 0;
+		plane->dma_addr  = 0;
 	}
 
 	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);

drivers/gpu/drm/omapdrm/omap_fbdev.c

@@ -106,7 +106,7 @@ static int omap_fbdev_create(struct drm_fb_helper *helper,
 	union omap_gem_size gsize;
 	struct fb_info *fbi = NULL;
 	struct drm_mode_fb_cmd2 mode_cmd = {0};
-	dma_addr_t paddr;
+	dma_addr_t dma_addr;
 	int ret;
 
 	sizes->surface_bpp = 32;
@@ -162,7 +162,7 @@ static int omap_fbdev_create(struct drm_fb_helper *helper,
 	 * to it).  Then we just need to be sure that we are able to re-
 	 * pin it in case of an opps.
 	 */
-	ret = omap_gem_get_paddr(fbdev->bo, &paddr);
+	ret = omap_gem_get_paddr(fbdev->bo, &dma_addr);
 	if (ret) {
 		dev_err(dev->dev,
 			"could not map (paddr)!  Skipping framebuffer alloc\n");
@@ -193,11 +193,11 @@ static int omap_fbdev_create(struct drm_fb_helper *helper,
 	drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->format->depth);
 	drm_fb_helper_fill_var(fbi, helper, sizes->fb_width, sizes->fb_height);
 
-	dev->mode_config.fb_base = paddr;
+	dev->mode_config.fb_base = dma_addr;
 
 	fbi->screen_base = omap_gem_vaddr(fbdev->bo);
 	fbi->screen_size = fbdev->bo->size;
-	fbi->fix.smem_start = paddr;
+	fbi->fix.smem_start = dma_addr;
 	fbi->fix.smem_len = fbdev->bo->size;
 
 	/* if we have DMM, then we can use it for scrolling by just

drivers/gpu/drm/omapdrm/omap_gem.c

@@ -50,7 +50,7 @@ struct omap_gem_object {
 	uint32_t roll;
 
 	/**
-	 * paddr contains the buffer DMA address. It is valid for
+	 * dma_addr contains the buffer DMA address. It is valid for
 	 *
 	 * - buffers allocated through the DMA mapping API (with the
 	 *   OMAP_BO_MEM_DMA_API flag set)
@@ -58,24 +58,24 @@ struct omap_gem_object {
 	 * - buffers imported from dmabuf (with the OMAP_BO_MEM_DMABUF flag set)
 	 *   if they are physically contiguous (when sgt->orig_nents == 1)
 	 *
-	 * - buffers mapped through the TILER when paddr_cnt is not zero, in
+	 * - buffers mapped through the TILER when dma_addr_cnt is not zero, in
 	 *   which case the DMA address points to the TILER aperture
 	 *
 	 * Physically contiguous buffers have their DMA address equal to the
 	 * physical address as we don't remap those buffers through the TILER.
 	 *
 	 * Buffers mapped to the TILER have their DMA address pointing to the
-	 * TILER aperture. As TILER mappings are refcounted (through paddr_cnt)
-	 * the DMA address must be accessed through omap_get_get_paddr() to
-	 * ensure that the mapping won't disappear unexpectedly. References must
-	 * be released with omap_gem_put_paddr().
+	 * TILER aperture. As TILER mappings are refcounted (through
+	 * dma_addr_cnt) the DMA address must be accessed through
+	 * omap_get_get_paddr() to ensure that the mapping won't disappear
+	 * unexpectedly. References must be released with omap_gem_put_paddr().
 	 */
-	dma_addr_t paddr;
+	dma_addr_t dma_addr;
 
 	/**
-	 * # of users of paddr
+	 * # of users of dma_addr
 	 */
-	uint32_t paddr_cnt;
+	uint32_t dma_addr_cnt;
 
 	/**
 	 * If the buffer has been imported from a dmabuf the OMAP_DB_DMABUF flag
@@ -119,7 +119,7 @@ struct omap_gem_object {
 #define NUM_USERGART_ENTRIES 2
 struct omap_drm_usergart_entry {
 	struct tiler_block *block;	/* the reserved tiler block */
-	dma_addr_t paddr;
+	dma_addr_t dma_addr;
 	struct drm_gem_object *obj;	/* the current pinned obj */
 	pgoff_t obj_pgoff;		/* page offset of obj currently
 					   mapped in */
@@ -392,7 +392,7 @@ static int fault_1d(struct drm_gem_object *obj,
 		pfn = page_to_pfn(omap_obj->pages[pgoff]);
 	} else {
 		BUG_ON(!is_contiguous(omap_obj));
-		pfn = (omap_obj->paddr >> PAGE_SHIFT) + pgoff;
+		pfn = (omap_obj->dma_addr >> PAGE_SHIFT) + pgoff;
 	}
 
 	VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address,
@@ -485,7 +485,7 @@ static int fault_2d(struct drm_gem_object *obj,
 		return ret;
 	}
 
-	pfn = entry->paddr >> PAGE_SHIFT;
+	pfn = entry->dma_addr >> PAGE_SHIFT;
 
 	VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address,
 			pfn, pfn << PAGE_SHIFT);
@@ -787,7 +787,7 @@ void omap_gem_dma_sync(struct drm_gem_object *obj,
 /* Get physical address for DMA.. if the buffer is not already contiguous, remap
  * it to pin in physically contiguous memory.. (ie. map in TILER)
  */
-int omap_gem_get_paddr(struct drm_gem_object *obj, dma_addr_t *paddr)
+int omap_gem_get_paddr(struct drm_gem_object *obj, dma_addr_t *dma_addr)
 {
 	struct omap_drm_private *priv = obj->dev->dev_private;
 	struct omap_gem_object *omap_obj = to_omap_bo(obj);
@@ -796,7 +796,7 @@ int omap_gem_get_paddr(struct drm_gem_object *obj, dma_addr_t *paddr)
 	mutex_lock(&obj->dev->struct_mutex);
 
 	if (!is_contiguous(omap_obj) && priv->has_dmm) {
-		if (omap_obj->paddr_cnt == 0) {
+		if (omap_obj->dma_addr_cnt == 0) {
 			struct page **pages;
 			uint32_t npages = obj->size >> PAGE_SHIFT;
 			enum tiler_fmt fmt = gem2fmt(omap_obj->flags);
@@ -833,17 +833,17 @@ int omap_gem_get_paddr(struct drm_gem_object *obj, dma_addr_t *paddr)
 				goto fail;
 			}
 
-			omap_obj->paddr = tiler_ssptr(block);
+			omap_obj->dma_addr = tiler_ssptr(block);
 			omap_obj->block = block;
 
-			DBG("got paddr: %pad", &omap_obj->paddr);
+			DBG("got dma address: %pad", &omap_obj->dma_addr);
 		}
 
-		omap_obj->paddr_cnt++;
+		omap_obj->dma_addr_cnt++;
 
-		*paddr = omap_obj->paddr;
+		*dma_addr = omap_obj->dma_addr;
 	} else if (is_contiguous(omap_obj)) {
-		*paddr = omap_obj->paddr;
+		*dma_addr = omap_obj->dma_addr;
 	} else {
 		ret = -EINVAL;
 		goto fail;
@@ -864,9 +864,9 @@ void omap_gem_put_paddr(struct drm_gem_object *obj)
 	int ret;
 
 	mutex_lock(&obj->dev->struct_mutex);
-	if (omap_obj->paddr_cnt > 0) {
-		omap_obj->paddr_cnt--;
-		if (omap_obj->paddr_cnt == 0) {
+	if (omap_obj->dma_addr_cnt > 0) {
+		omap_obj->dma_addr_cnt--;
+		if (omap_obj->dma_addr_cnt == 0) {
 			ret = tiler_unpin(omap_obj->block);
 			if (ret) {
 				dev_err(obj->dev->dev,
@@ -877,7 +877,7 @@ void omap_gem_put_paddr(struct drm_gem_object *obj)
 				dev_err(obj->dev->dev,
 					"could not release unmap: %d\n", ret);
 			}
-			omap_obj->paddr = 0;
+			omap_obj->dma_addr = 0;
 			omap_obj->block = NULL;
 		}
 	}
@@ -889,16 +889,16 @@ void omap_gem_put_paddr(struct drm_gem_object *obj)
  * specified orientation and x,y offset from top-left corner of buffer
  * (only valid for tiled 2d buffers)
  */
-int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
-		int x, int y, dma_addr_t *paddr)
+int omap_gem_rotated_dma_addr(struct drm_gem_object *obj, uint32_t orient,
+		int x, int y, dma_addr_t *dma_addr)
 {
 	struct omap_gem_object *omap_obj = to_omap_bo(obj);
 	int ret = -EINVAL;
 
 	mutex_lock(&obj->dev->struct_mutex);
-	if ((omap_obj->paddr_cnt > 0) && omap_obj->block &&
+	if ((omap_obj->dma_addr_cnt > 0) && omap_obj->block &&
 			(omap_obj->flags & OMAP_BO_TILED)) {
-		*paddr = tiler_tsptr(omap_obj->block, orient, x, y);
+		*dma_addr = tiler_tsptr(omap_obj->block, orient, x, y);
 		ret = 0;
 	}
 	mutex_unlock(&obj->dev->struct_mutex);
@@ -1019,7 +1019,7 @@ void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
 
 	seq_printf(m, "%08x: %2d (%2d) %08llx %pad (%2d) %p %4d",
 			omap_obj->flags, obj->name, kref_read(&obj->refcount),
-			off, &omap_obj->paddr, omap_obj->paddr_cnt,
+			off, &omap_obj->dma_addr, omap_obj->dma_addr_cnt,
 			omap_obj->vaddr, omap_obj->roll);
 
 	if (omap_obj->flags & OMAP_BO_TILED) {
@@ -1076,7 +1076,7 @@ void omap_gem_free_object(struct drm_gem_object *obj)
 	/* this means the object is still pinned.. which really should
 	 * not happen.  I think..
 	 */
-	WARN_ON(omap_obj->paddr_cnt > 0);
+	WARN_ON(omap_obj->dma_addr_cnt > 0);
 
 	if (omap_obj->pages) {
 		if (omap_obj->flags & OMAP_BO_MEM_DMABUF)
@@ -1087,7 +1087,7 @@ void omap_gem_free_object(struct drm_gem_object *obj)
 
 	if (omap_obj->flags & OMAP_BO_MEM_DMA_API) {
 		dma_free_wc(dev->dev, obj->size, omap_obj->vaddr,
-			    omap_obj->paddr);
+			    omap_obj->dma_addr);
 	} else if (omap_obj->vaddr) {
 		vunmap(omap_obj->vaddr);
 	} else if (obj->import_attach) {
@@ -1184,7 +1184,7 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 	/* Allocate memory if needed. */
 	if (flags & OMAP_BO_MEM_DMA_API) {
 		omap_obj->vaddr = dma_alloc_wc(dev->dev, size,
-					       &omap_obj->paddr,
+					       &omap_obj->dma_addr,
 					       GFP_KERNEL);
 		if (!omap_obj->vaddr)
 			goto err_release;
@@ -1228,7 +1228,7 @@ struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size,
 	omap_obj->sgt = sgt;
 
 	if (sgt->orig_nents == 1) {
-		omap_obj->paddr = sg_dma_address(sgt->sgl);
+		omap_obj->dma_addr = sg_dma_address(sgt->sgl);
 	} else {
 		/* Create pages list from sgt */
 		struct sg_page_iter iter;
@@ -1335,11 +1335,11 @@ void omap_gem_init(struct drm_device *dev)
 						i, j, PTR_ERR(block));
 				return;
 			}
-			entry->paddr = tiler_ssptr(block);
+			entry->dma_addr = tiler_ssptr(block);
 			entry->block = block;
 
-			DBG("%d:%d: %dx%d: paddr=%pad stride=%d", i, j, w, h,
-					&entry->paddr,
+			DBG("%d:%d: %dx%d: dma_addr=%pad stride=%d", i, j, w, h,
+					&entry->dma_addr,
 					usergart[i].stride_pfn << PAGE_SHIFT);
 		}
 	}

drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c

@@ -31,7 +31,7 @@ static struct sg_table *omap_gem_map_dma_buf(
 {
 	struct drm_gem_object *obj = attachment->dmabuf->priv;
 	struct sg_table *sg;
-	dma_addr_t paddr;
+	dma_addr_t dma_addr;
 	int ret;
 
 	sg = kzalloc(sizeof(*sg), GFP_KERNEL);
@@ -41,7 +41,7 @@ static struct sg_table *omap_gem_map_dma_buf(
 	/* camera, etc, need physically contiguous.. but we need a
 	 * better way to know this..
 	 */
-	ret = omap_gem_get_paddr(obj, &paddr);
+	ret = omap_gem_get_paddr(obj, &dma_addr);
 	if (ret)
 		goto out;
 
@@ -51,8 +51,8 @@ static struct sg_table *omap_gem_map_dma_buf(
 
 	sg_init_table(sg->sgl, 1);
 	sg_dma_len(sg->sgl) = obj->size;
-	sg_set_page(sg->sgl, pfn_to_page(PFN_DOWN(paddr)), obj->size, 0);
-	sg_dma_address(sg->sgl) = paddr;
+	sg_set_page(sg->sgl, pfn_to_page(PFN_DOWN(dma_addr)), obj->size, 0);
+	sg_dma_address(sg->sgl) = dma_addr;
 
 	/* this should be after _get_paddr() to ensure we have pages attached */
 	omap_gem_dma_sync(obj, dir);