[PATCH] v4l: 720: alsa support for saa7134 that should work wonderful

- Alsa support for saa7134 that should work.
Signed-off-by: NRicardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: NNickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: NMauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/media/video/saa7134/saa7134-core.c

@@ -57,6 +57,10 @@ static unsigned int oss = 0;
 module_param(oss, int, 0444);
 MODULE_PARM_DESC(oss,"register oss devices (default: no)");
 
+static unsigned int alsa = 0;
+module_param(alsa, int, 0444);
+MODULE_PARM_DESC(alsa,"register alsa devices (default: no)");
+
 static unsigned int latency = UNSET;
 module_param(latency, int, 0444);
 MODULE_PARM_DESC(latency,"pci latency timer");
@@ -591,13 +595,19 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
 		    card_has_mpeg(dev))
 			saa7134_irq_ts_done(dev,status);
 
-		if ((report & SAA7134_IRQ_REPORT_DONE_RA3))
-			saa7134_irq_oss_done(dev,status);
+		if ((report & SAA7134_IRQ_REPORT_DONE_RA3))  {
+			if (oss) {
+				saa7134_irq_oss_done(dev,status);
+			} else if (alsa) {
+				saa7134_irq_alsa_done(dev,status);
+			}
+		}
 
 		if ((report & (SAA7134_IRQ_REPORT_GPIO16 |
 			       SAA7134_IRQ_REPORT_GPIO18)) &&
 		    dev->remote)
 			saa7134_input_irq(dev);
+
 	}
 
 	if (10 == loop) {
@@ -1016,6 +1026,10 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
 				goto fail5;
 			printk(KERN_INFO "%s: registered device mixer%d\n",
 			       dev->name,dev->oss.minor_mixer >> 4);
+		} else if (alsa) {
+			alsa_card_saa7134_create(dev);
+			printk(KERN_INFO "%s: registered ALSA devices\n",
+			       dev->name);
 		}
 		break;
 	}
@@ -1043,6 +1057,8 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
 	case PCI_DEVICE_ID_PHILIPS_SAA7135:
 		if (oss)
 			unregister_sound_dsp(dev->oss.minor_dsp);
+		else if (alsa)
+			alsa_card_saa7134_exit();
 		break;
 	}
  fail4:
@@ -1102,7 +1118,8 @@ static void __devexit saa7134_finidev(struct pci_dev *pci_dev)
 		if (oss) {
 			unregister_sound_mixer(dev->oss.minor_mixer);
 			unregister_sound_dsp(dev->oss.minor_dsp);
-		}
+		} else if (alsa)
+			alsa_card_saa7134_exit();
 		break;
 	}
 	saa7134_unregister_video(dev);

drivers/media/video/saa7134/saa7134-oss.c

@@ -44,6 +44,7 @@ MODULE_PARM_DESC(oss_rate,"sample rate (valid are: 32000,48000)");
 #define dprintk(fmt, arg...)	if (oss_debug) \
 	printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)
 
+
 /* ------------------------------------------------------------------ */
 
 static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
@@ -173,8 +174,8 @@ static int dsp_rec_start(struct saa7134_dev *dev)
 			fmt |= (2 << 4);
 		if (!sign)
 			fmt |= 0x04;
-		saa_writel(0x588 >> 2, dev->oss.blksize -4);
-		saa_writel(0x58c >> 2, 0x543210 | (fmt << 24));
+		saa_writel(SAA7133_NUM_SAMPLES, dev->oss.blksize -4);
+		saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
 		break;
 	}
 	dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",

drivers/media/video/saa7134/saa7134-reg.h

@@ -43,6 +43,14 @@
 #define SAA7134_FIFO_SIZE                       (0x2a0 >> 2)
 #define SAA7134_THRESHOULD                      (0x2a4 >> 2)
 
+#define SAA7133_NUM_SAMPLES			(0x588 >> 2)
+#define SAA7133_AUDIO_CHANNEL			(0x58c >> 2)
+#define SAA7133_AUDIO_FORMAT			(0x58f >> 2)
+#define SAA7133_DIGITAL_OUTPUT_SEL1		(0x46c >> 2)
+#define SAA7133_DIGITAL_OUTPUT_SEL2		(0x470 >> 2)
+#define SAA7133_DIGITAL_INPUT_XBAR1		(0x464 >> 2)
+#define SAA7133_ANALOG_IO_SELECT                (0x594 >> 2)
+
 /* main control */
 #define SAA7134_MAIN_CTRL                       (0x2a8 >> 2)
 #define   SAA7134_MAIN_CTRL_VPLLE	       	(1 << 15)

drivers/media/video/saa7134/saa7134.h

@@ -45,6 +45,10 @@
 #endif
 #define UNSET (-1U)
 
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+
 /* ----------------------------------------------------------- */
 /* enums                                                       */
 
@@ -364,6 +368,7 @@ struct saa7134_oss {
 	unsigned int               dma_blk;
 	unsigned int               read_offset;
 	unsigned int               read_count;
+	snd_pcm_substream_t 	   *substream;
 };
 
 /* IR input */
@@ -644,6 +649,11 @@ int  saa7134_input_init1(struct saa7134_dev *dev);
 void saa7134_input_fini(struct saa7134_dev *dev);
 void saa7134_input_irq(struct saa7134_dev *dev);
 
+int alsa_card_saa7134_create(struct saa7134_dev *saadev);
+void alsa_card_saa7134_exit(void);
+void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status);
+
+
 /*
  * Local variables:
  * c-basic-offset: 8