[media] cx23885: Add ALSA support

[stoth@kernellabs.com: add it to the makefile and fix snd_card binding]
[liplianin@netup.ru: videobuf: Remove the videobuf_sg_dma_map/unmap functions]

Signed-off-by: Mijhail Moreyra <mijhail.moreyra@gmail.com>
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 33 insertions, 15 deletions

diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index ee41a8882f58..d8dfa40b4af9 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -156,11 +156,12 @@ static struct sram_channel cx23885_sram_channels[] = {
 	},
 	[SRAM_CH07] = {
 		.name		= "ch7",
-		.cmds_start	= 0x0,
-		.ctrl_start	= 0x0,
-		.cdt		= 0x0,
-		.fifo_start	= 0x0,
-		.fifo_size	= 0x0,
+		.name		= "TV Audio",
+		.cmds_start	= 0x10190,
+		.ctrl_start	= 0x10480,
+		.cdt		= 0x10a00,
+		.fifo_start	= 0x7000,
+		.fifo_size	= 0x1000,
 		.ptr1_reg	= DMA6_PTR1,
 		.ptr2_reg	= DMA6_PTR2,
 		.cnt1_reg	= DMA6_CNT1,
@@ -1082,10 +1083,10 @@ static void cx23885_dev_unregister(struct cx23885_dev *dev)
 static __le32 *cx23885_risc_field(__le32 *rp, struct scatterlist *sglist,
 			       unsigned int offset, u32 sync_line,
 			       unsigned int bpl, unsigned int padding,
-			       unsigned int lines)
+			       unsigned int lines,  unsigned int lpi)
 {
 	struct scatterlist *sg;
-	unsigned int line, todo;
+	unsigned int line, todo, sol;
 
 	/* sync instruction */
 	if (sync_line != NO_SYNC_LINE)
@@ -1098,16 +1099,22 @@ static __le32 *cx23885_risc_field(__le32 *rp, struct scatterlist *sglist,
 			offset -= sg_dma_len(sg);
 			sg++;
 		}
+
+		if (lpi && line > 0 && !(line % lpi))
+			sol = RISC_SOL | RISC_IRQ1 | RISC_CNT_INC;
+		else
+			sol = RISC_SOL;
+
 		if (bpl <= sg_dma_len(sg)-offset) {
 			/* fits into current chunk */
-			*(rp++) = cpu_to_le32(RISC_WRITE|RISC_SOL|RISC_EOL|bpl);
+			*(rp++) = cpu_to_le32(RISC_WRITE|sol|RISC_EOL|bpl);
 			*(rp++) = cpu_to_le32(sg_dma_address(sg)+offset);
 			*(rp++) = cpu_to_le32(0); /* bits 63-32 */
 			offset += bpl;
 		} else {
 			/* scanline needs to be split */
 			todo = bpl;
-			*(rp++) = cpu_to_le32(RISC_WRITE|RISC_SOL|
+			*(rp++) = cpu_to_le32(RISC_WRITE|sol|
 					    (sg_dma_len(sg)-offset));
 			*(rp++) = cpu_to_le32(sg_dma_address(sg)+offset);
 			*(rp++) = cpu_to_le32(0); /* bits 63-32 */
@@ -1164,10 +1171,10 @@ int cx23885_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 	rp = risc->cpu;
 	if (UNSET != top_offset)
 		rp = cx23885_risc_field(rp, sglist, top_offset, 0,
-					bpl, padding, lines);
+					bpl, padding, lines, 0);
 	if (UNSET != bottom_offset)
 		rp = cx23885_risc_field(rp, sglist, bottom_offset, 0x200,
-					bpl, padding, lines);
+					bpl, padding, lines, 0);
 
 	/* save pointer to jmp instruction address */
 	risc->jmp = rp;
@@ -1175,11 +1182,11 @@ int cx23885_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 	return 0;
 }
 
-static int cx23885_risc_databuffer(struct pci_dev *pci,
+int cx23885_risc_databuffer(struct pci_dev *pci,
 				   struct btcx_riscmem *risc,
 				   struct scatterlist *sglist,
 				   unsigned int bpl,
-				   unsigned int lines)
+				   unsigned int lines, unsigned int lpi)
 {
 	u32 instructions;
 	__le32 *rp;
@@ -1199,7 +1206,8 @@ static int cx23885_risc_databuffer(struct pci_dev *pci,
 
 	/* write risc instructions */
 	rp = risc->cpu;
-	rp = cx23885_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines);
+	rp = cx23885_risc_field(rp, sglist, 0, NO_SYNC_LINE,
+				bpl, 0, lines, lpi);
 
 	/* save pointer to jmp instruction address */
 	risc->jmp = rp;
@@ -1517,7 +1525,7 @@ int cx23885_buf_prepare(struct videobuf_queue *q, struct cx23885_tsport *port,
 			goto fail;
 		cx23885_risc_databuffer(dev->pci, &buf->risc,
 					videobuf_to_dma(&buf->vb)->sglist,
-					buf->vb.width, buf->vb.height);
+					buf->vb.width, buf->vb.height, 0);
 	}
 	buf->vb.state = VIDEOBUF_PREPARED;
 	return 0;
@@ -1741,15 +1749,19 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id)
 	struct cx23885_tsport *ts2 = &dev->ts2;
 	u32 pci_status, pci_mask;
 	u32 vida_status, vida_mask;
+	u32 audint_status, audint_mask;
 	u32 ts1_status, ts1_mask;
 	u32 ts2_status, ts2_mask;
 	int vida_count = 0, ts1_count = 0, ts2_count = 0, handled = 0;
+	int audint_count = 0;
 	bool subdev_handled;
 
 	pci_status = cx_read(PCI_INT_STAT);
 	pci_mask = cx23885_irq_get_mask(dev);
 	vida_status = cx_read(VID_A_INT_STAT);
 	vida_mask = cx_read(VID_A_INT_MSK);
+	audint_status = cx_read(AUDIO_INT_INT_STAT);
+	audint_mask = cx_read(AUDIO_INT_INT_MSK);
 	ts1_status = cx_read(VID_B_INT_STAT);
 	ts1_mask = cx_read(VID_B_INT_MSK);
 	ts2_status = cx_read(VID_C_INT_STAT);
@@ -1759,12 +1771,15 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id)
 		goto out;
 
 	vida_count = cx_read(VID_A_GPCNT);
+	audint_count = cx_read(AUD_INT_A_GPCNT);
 	ts1_count = cx_read(ts1->reg_gpcnt);
 	ts2_count = cx_read(ts2->reg_gpcnt);
 	dprintk(7, "pci_status: 0x%08x  pci_mask: 0x%08x\n",
 		pci_status, pci_mask);
 	dprintk(7, "vida_status: 0x%08x vida_mask: 0x%08x count: 0x%x\n",
 		vida_status, vida_mask, vida_count);
+	dprintk(7, "audint_status: 0x%08x audint_mask: 0x%08x count: 0x%x\n",
+		audint_status, audint_mask, audint_count);
 	dprintk(7, "ts1_status: 0x%08x  ts1_mask: 0x%08x count: 0x%x\n",
 		ts1_status, ts1_mask, ts1_count);
 	dprintk(7, "ts2_status: 0x%08x  ts2_mask: 0x%08x count: 0x%x\n",
@@ -1861,6 +1876,9 @@ static irqreturn_t cx23885_irq(int irq, void *dev_id)
 	if (vida_status)
 		handled += cx23885_video_irq(dev, vida_status);
 
+	if (audint_status)
+		handled += cx23885_audio_irq(dev, audint_status, audint_mask);
+
 	if (pci_status & PCI_MSK_IR) {
 		subdev_handled = false;
 		v4l2_subdev_call(dev->sd_ir, core, interrupt_service_routine,