media: ipu2-cio2: Replace custom definition with PAGE_SIZE

It's quite unlikely that another page size will be supported,
but in any case there is still an inconsistency between custom
page size definition and generic macros used in the driver.

Switch over to the generic PAGE_SIZE for sake of the consistency.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/pci/intel/ipu3/ipu3-cio2.c

@@ -96,12 +96,12 @@ static inline u32 cio2_bytesperline(const unsigned int width)
 static void cio2_fbpt_exit_dummy(struct cio2_device *cio2)
 {
 	if (cio2->dummy_lop) {
-		dma_free_coherent(&cio2->pci_dev->dev, CIO2_PAGE_SIZE,
+		dma_free_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
 				  cio2->dummy_lop, cio2->dummy_lop_bus_addr);
 		cio2->dummy_lop = NULL;
 	}
 	if (cio2->dummy_page) {
-		dma_free_coherent(&cio2->pci_dev->dev, CIO2_PAGE_SIZE,
+		dma_free_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
 				  cio2->dummy_page, cio2->dummy_page_bus_addr);
 		cio2->dummy_page = NULL;
 	}
@@ -111,12 +111,10 @@ static int cio2_fbpt_init_dummy(struct cio2_device *cio2)
 {
 	unsigned int i;
 
-	cio2->dummy_page = dma_alloc_coherent(&cio2->pci_dev->dev,
-					      CIO2_PAGE_SIZE,
+	cio2->dummy_page = dma_alloc_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
 					      &cio2->dummy_page_bus_addr,
 					      GFP_KERNEL);
-	cio2->dummy_lop = dma_alloc_coherent(&cio2->pci_dev->dev,
-					     CIO2_PAGE_SIZE,
+	cio2->dummy_lop = dma_alloc_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
 					     &cio2->dummy_lop_bus_addr,
 					     GFP_KERNEL);
 	if (!cio2->dummy_page || !cio2->dummy_lop) {
@@ -161,7 +159,7 @@ static void cio2_fbpt_entry_init_dummy(struct cio2_device *cio2,
 
 	entry[0].first_entry.first_page_offset = 0;
 	entry[1].second_entry.num_of_pages = CIO2_LOP_ENTRIES * CIO2_MAX_LOPS;
-	entry[1].second_entry.last_page_available_bytes = CIO2_PAGE_SIZE - 1;
+	entry[1].second_entry.last_page_available_bytes = PAGE_SIZE - 1;
 
 	for (i = 0; i < CIO2_MAX_LOPS; i++)
 		entry[i].lop_page_addr = cio2->dummy_lop_bus_addr >> PAGE_SHIFT;
@@ -182,25 +180,24 @@ static void cio2_fbpt_entry_init_buf(struct cio2_device *cio2,
 	entry[0].first_entry.first_page_offset = b->offset;
 	remaining = length + entry[0].first_entry.first_page_offset;
 	entry[1].second_entry.num_of_pages =
-		DIV_ROUND_UP(remaining, CIO2_PAGE_SIZE);
+		DIV_ROUND_UP(remaining, PAGE_SIZE);
 	/*
 	 * last_page_available_bytes has the offset of the last byte in the
 	 * last page which is still accessible by DMA. DMA cannot access
 	 * beyond this point. Valid range for this is from 0 to 4095.
 	 * 0 indicates 1st byte in the page is DMA accessible.
-	 * 4095 (CIO2_PAGE_SIZE - 1) means every single byte in the last page
+	 * 4095 (PAGE_SIZE - 1) means every single byte in the last page
 	 * is available for DMA transfer.
 	 */
 	entry[1].second_entry.last_page_available_bytes =
 			(remaining & ~PAGE_MASK) ?
-				(remaining & ~PAGE_MASK) - 1 :
-				CIO2_PAGE_SIZE - 1;
+				(remaining & ~PAGE_MASK) - 1 : PAGE_SIZE - 1;
 	/* Fill FBPT */
 	remaining = length;
 	i = 0;
 	while (remaining > 0) {
 		entry->lop_page_addr = b->lop_bus_addr[i] >> PAGE_SHIFT;
-		remaining -= CIO2_LOP_ENTRIES * CIO2_PAGE_SIZE;
+		remaining -= CIO2_LOP_ENTRIES * PAGE_SIZE;
 		entry++;
 		i++;
 	}
@@ -840,7 +837,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
 	struct device *dev = &cio2->pci_dev->dev;
 	struct cio2_buffer *b =
 		container_of(vb, struct cio2_buffer, vbb.vb2_buf);
-	unsigned int pages = DIV_ROUND_UP(vb->planes[0].length, CIO2_PAGE_SIZE);
+	unsigned int pages = DIV_ROUND_UP(vb->planes[0].length, PAGE_SIZE);
 	unsigned int lops = DIV_ROUND_UP(pages + 1, CIO2_LOP_ENTRIES);
 	struct sg_table *sg;
 	struct sg_dma_page_iter sg_iter;
@@ -855,7 +852,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
 	memset(b->lop, 0, sizeof(b->lop));
 	/* Allocate LOP table */
 	for (i = 0; i < lops; i++) {
-		b->lop[i] = dma_alloc_coherent(dev, CIO2_PAGE_SIZE,
+		b->lop[i] = dma_alloc_coherent(dev, PAGE_SIZE,
 					       &b->lop_bus_addr[i], GFP_KERNEL);
 		if (!b->lop[i])
 			goto fail;
@@ -885,8 +882,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
 	return 0;
 fail:
 	while (i--)
-		dma_free_coherent(dev, CIO2_PAGE_SIZE,
-				  b->lop[i], b->lop_bus_addr[i]);
+		dma_free_coherent(dev, PAGE_SIZE, b->lop[i], b->lop_bus_addr[i]);
 	return -ENOMEM;
 }
 
@@ -976,7 +972,7 @@ static void cio2_vb2_buf_cleanup(struct vb2_buffer *vb)
 	/* Free LOP table */
 	for (i = 0; i < CIO2_MAX_LOPS; i++) {
 		if (b->lop[i])
-			dma_free_coherent(&cio2->pci_dev->dev, CIO2_PAGE_SIZE,
+			dma_free_coherent(&cio2->pci_dev->dev, PAGE_SIZE,
 					  b->lop[i], b->lop_bus_addr[i]);
 	}
 }

drivers/media/pci/intel/ipu3/ipu3-cio2.h

@@ -392,7 +392,6 @@ struct cio2_device {
 					 sizeof(struct cio2_fbpt_entry))
 
 #define CIO2_FBPT_SUBENTRY_UNIT		4
-#define CIO2_PAGE_SIZE			4096
 
 /* cio2 fbpt first_entry ctrl status */
 #define CIO2_FBPT_CTRL_VALID		BIT(0)