[media] cx25821: remove bogus btcx_risc dependency

Those btcx_risc functions are meant for use with bttv, other drivers
should just allocate the memory themselves.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 29 insertions, 7 deletions

diff --git a/drivers/media/pci/cx25821/cx25821-core.c b/drivers/media/pci/cx25821/cx25821-core.c
index 389fffd..c8c65b7 100644
--- a/drivers/media/pci/cx25821/cx25821-core.c
+++ b/drivers/media/pci/cx25821/cx25821-core.c
@@ -979,6 +979,27 @@ void cx25821_dev_unregister(struct cx25821_dev *dev)
 }
 EXPORT_SYMBOL(cx25821_dev_unregister);
 
+int cx25821_riscmem_alloc(struct pci_dev *pci,
+		       struct cx25821_riscmem *risc,
+		       unsigned int size)
+{
+	__le32 *cpu;
+	dma_addr_t dma = 0;
+
+	if (NULL != risc->cpu && risc->size < size)
+		pci_free_consistent(pci, risc->size, risc->cpu, risc->dma);
+	if (NULL == risc->cpu) {
+		cpu = pci_zalloc_consistent(pci, size, &dma);
+		if (NULL == cpu)
+			return -ENOMEM;
+		risc->cpu  = cpu;
+		risc->dma  = dma;
+		risc->size = size;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(cx25821_riscmem_alloc);
+
 static __le32 *cx25821_risc_field(__le32 * rp, struct scatterlist *sglist,
 				  unsigned int offset, u32 sync_line,
 				  unsigned int bpl, unsigned int padding,
@@ -1035,7 +1056,7 @@ static __le32 *cx25821_risc_field(__le32 * rp, struct scatterlist *sglist,
 	return rp;
 }
 
-int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
+int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc,
 			struct scatterlist *sglist, unsigned int top_offset,
 			unsigned int bottom_offset, unsigned int bpl,
 			unsigned int padding, unsigned int lines)
@@ -1059,7 +1080,7 @@ int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 	instructions = fields * (1 + ((bpl + padding) * lines) / PAGE_SIZE +
 			lines);
 	instructions += 2;
-	rc = btcx_riscmem_alloc(pci, risc, instructions * 12);
+	rc = cx25821_riscmem_alloc(pci, risc, instructions * 12);
 
 	if (rc < 0)
 		return rc;
@@ -1146,7 +1167,7 @@ static __le32 *cx25821_risc_field_audio(__le32 * rp, struct scatterlist *sglist,
 }
 
 int cx25821_risc_databuffer_audio(struct pci_dev *pci,
-				  struct btcx_riscmem *risc,
+				  struct cx25821_riscmem *risc,
 				  struct scatterlist *sglist,
 				  unsigned int bpl,
 				  unsigned int lines, unsigned int lpi)
@@ -1163,7 +1184,7 @@ int cx25821_risc_databuffer_audio(struct pci_dev *pci,
 	instructions = 1 + (bpl * lines) / PAGE_SIZE + lines;
 	instructions += 1;
 
-	rc = btcx_riscmem_alloc(pci, risc, instructions * 12);
+	rc = cx25821_riscmem_alloc(pci, risc, instructions * 12);
 	if (rc < 0)
 		return rc;
 
@@ -1179,13 +1200,13 @@ int cx25821_risc_databuffer_audio(struct pci_dev *pci,
 }
 EXPORT_SYMBOL(cx25821_risc_databuffer_audio);
 
-int cx25821_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
+int cx25821_risc_stopper(struct pci_dev *pci, struct cx25821_riscmem *risc,
 			 u32 reg, u32 mask, u32 value)
 {
 	__le32 *rp;
 	int rc;
 
-	rc = btcx_riscmem_alloc(pci, risc, 4 * 16);
+	rc = cx25821_riscmem_alloc(pci, risc, 4 * 16);
 
 	if (rc < 0)
 		return rc;
@@ -1211,7 +1232,8 @@ void cx25821_free_buffer(struct videobuf_queue *q, struct cx25821_buffer *buf)
 	videobuf_waiton(q, &buf->vb, 0, 0);
 	videobuf_dma_unmap(q->dev, dma);
 	videobuf_dma_free(dma);
-	btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc);
+	pci_free_consistent(to_pci_dev(q->dev),
+			buf->risc.size, buf->risc.cpu, buf->risc.dma);
 	buf->vb.state = VIDEOBUF_NEEDS_INIT;
 }