V4L/DVB (4701): Saa713x audio fixes

This change fixes the following issues:
- resolve the SECAM D/K vs SECAM-L sound conflict
  It is now possible to select the SECAM version either by the VIDEOIOC_S_STD
  IO control or by the new secam= insmod option.
  The driver now adapts its audio standard search list to the selected
  standard.
- don't trigger a sound standard search when a LINE input is selected.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 40 insertions, 53 deletions

diff --git a/drivers/media/video/saa7134/saa7134-tvaudio.c b/drivers/media/video/saa7134/saa7134-tvaudio.c
index d31220d20495..dd759d6d8d25 100644
--- a/drivers/media/video/saa7134/saa7134-tvaudio.c
+++ b/drivers/media/video/saa7134/saa7134-tvaudio.c
@@ -72,12 +72,12 @@ static struct mainscan {
         int          carr;
 } mainscan[] = {
         {
-                .name = "M",
-                .std  = V4L2_STD_NTSC | V4L2_STD_PAL_M,
+                .name = "MN",
+                .std  = V4L2_STD_MN,
                 .carr = 4500,
         },{
-                .name = "BG",
-                .std  = V4L2_STD_PAL_BG,
+                .name = "BGH",
+                .std  = V4L2_STD_B | V4L2_STD_GH,
                 .carr = 5500,
         },{
                 .name = "I",
@@ -85,7 +85,7 @@ static struct mainscan {
                 .carr = 6000,
         },{
                 .name = "DKL",
-                .std  = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
+                .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
                 .carr = 6500,
         }
 };
@@ -93,76 +93,70 @@ static struct mainscan {
 static struct saa7134_tvaudio tvaudio[] = {
         {
                 .name          = "PAL-B/G FM-stereo",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_BG,
                 .mode          = TVAUDIO_FM_BG_STEREO,
                 .carr1         = 5500,
                 .carr2         = 5742,
         },{
                 .name          = "PAL-D/K1 FM-stereo",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_DK,
                 .carr1         = 6500,
                 .carr2         = 6258,
                 .mode          = TVAUDIO_FM_BG_STEREO,
         },{
                 .name          = "PAL-D/K2 FM-stereo",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_DK,
                 .carr1         = 6500,
                 .carr2         = 6742,
                 .mode          = TVAUDIO_FM_BG_STEREO,
         },{
                 .name          = "PAL-D/K3 FM-stereo",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_DK,
                 .carr1         = 6500,
                 .carr2         = 5742,
                 .mode          = TVAUDIO_FM_BG_STEREO,
         },{
                 .name          = "PAL-B/G NICAM",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_BG,
                 .carr1         = 5500,
                 .carr2         = 5850,
                 .mode          = TVAUDIO_NICAM_FM,
         },{
                 .name          = "PAL-I NICAM",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_I,
                 .carr1         = 6000,
                 .carr2         = 6552,
                 .mode          = TVAUDIO_NICAM_FM,
         },{
                 .name          = "PAL-D/K NICAM",
-                .std           = V4L2_STD_PAL,
+                .std           = V4L2_STD_PAL_DK,
                 .carr1         = 6500,
                 .carr2         = 5850,
                 .mode          = TVAUDIO_NICAM_FM,
         },{
                 .name          = "SECAM-L NICAM",
-                .std           = V4L2_STD_SECAM,
+                .std           = V4L2_STD_SECAM_L,
                 .carr1         = 6500,
                 .carr2         = 5850,
                 .mode          = TVAUDIO_NICAM_AM,
         },{
-                .name          = "SECAM-L MONO",
-                .std           = V4L2_STD_SECAM,
+                .name          = "SECAM-D/K NICAM",
+                .std           = V4L2_STD_SECAM_DK,
                 .carr1         = 6500,
-                .carr2         = -1,
-                .mode          = TVAUDIO_AM_MONO,
+                .carr2         = 5850,
+                .mode          = TVAUDIO_NICAM_FM,
         },{
-                .name          = "SECAM-D/K",
-                .std           = V4L2_STD_SECAM,
-                .carr1         = 6500,
-                .carr2         = -1,
-                .mode          = TVAUDIO_FM_MONO,
+                .name          = "NTSC-A2 FM-stereo",
+                .std           = V4L2_STD_NTSC,
+                .carr1         = 4500,
+                .carr2         = 4724,
+                .mode          = TVAUDIO_FM_K_STEREO,
         },{
                 .name          = "NTSC-M",
                 .std           = V4L2_STD_NTSC,
                 .carr1         = 4500,
                 .carr2         = -1,
                 .mode          = TVAUDIO_FM_MONO,
-        },{
-                .name          = "NTSC-A2 FM-stereo",
-                .std           = V4L2_STD_NTSC,
-                .carr1         = 4500,
-                .carr2         = 4724,
-                .mode          = TVAUDIO_FM_K_STEREO,
         }
 };
 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
@@ -340,12 +334,6 @@ static void tvaudio_setmode(struct saa7134_dev *dev,
                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
                 break;
-        case TVAUDIO_AM_MONO:
-                saa_writeb(SAA7134_DEMODULATOR,               0x12);
-                saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
-                saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
-                saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
-                break;
         case TVAUDIO_FM_SAT_STEREO:
                 /* not implemented (yet) */
                 break;
@@ -390,7 +378,6 @@ static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
                 }
                 printk("\n");
         }
-
         if (dev->tvnorm->id & scan->std) {
                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
@@ -426,7 +413,6 @@ static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *au
 
         switch (audio->mode) {
         case TVAUDIO_FM_MONO:
-        case TVAUDIO_AM_MONO:
                 return V4L2_TUNER_SUB_MONO;
         case TVAUDIO_FM_K_STEREO:
         case TVAUDIO_FM_BG_STEREO:
@@ -495,7 +481,6 @@ static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *au
 
         switch (audio->mode) {
         case TVAUDIO_FM_MONO:
-        case TVAUDIO_AM_MONO:
                 /* nothing to do ... */
                 break;
         case TVAUDIO_FM_K_STEREO:
@@ -556,6 +541,7 @@ static int tvaudio_thread(void *data)
 
                 if (1 == nscan) {
                         /* only one candidate -- skip scan ;) */
+                        dprintk("only one main carrier candidate - skipping scan\n");
                         max1 = 12345;
                         carrier = default_carrier;
                 } else {
@@ -603,7 +589,6 @@ static int tvaudio_thread(void *data)
                 dev->automute = 0;
                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
                 saa7134_tvaudio_setmute(dev);
-
                 /* find the exact tv audio norm */
                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
                         if (dev->tvnorm->id != UNSET &&
@@ -611,7 +596,7 @@ static int tvaudio_thread(void *data)
                                 continue;
                         if (tvaudio[i].carr1 != carrier)
                                 continue;
-
+                        /* Note: at least the primary carrier is right here */
                         if (UNSET == audio)
                                 audio = i;
                         tvaudio_setmode(dev,&tvaudio[i],"trying");
@@ -626,6 +611,7 @@ static int tvaudio_thread(void *data)
                 if (UNSET == audio)
                         continue;
                 tvaudio_setmode(dev,&tvaudio[audio],"using");
+
                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
                 dev->tvaudio = &tvaudio[audio];
 
@@ -750,7 +736,6 @@ static int mute_input_7133(struct saa7134_dev *dev)
         int mask;
         struct saa7134_input *in;
 
-        /* Hac 0506 route OSS sound simultanously  */
         xbarin = 0x03;
         switch (dev->input->amux) {
         case TV:
@@ -834,18 +819,16 @@ static int tvaudio_thread_ddep(void *data)
                 } else {
                         /* (let chip) scan for sound carrier */
                         norms = 0;
-                        if (dev->tvnorm->id & V4L2_STD_PAL) {
-                                dprintk("PAL scan\n");
-                                norms |= 0x2c; /* B/G + D/K + I */
-                        }
-                        if (dev->tvnorm->id & V4L2_STD_NTSC) {
-                                dprintk("NTSC scan\n");
-                                norms |= 0x40; /* M */
-                        }
-                        if (dev->tvnorm->id & V4L2_STD_SECAM) {
-                                dprintk("SECAM scan\n");
-                                norms |= 0x18; /* L + D/K */
-                        }
+                        if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
+                                norms |= 0x04;
+                        if (dev->tvnorm->id & V4L2_STD_PAL_I)
+                                norms |= 0x20;
+                        if (dev->tvnorm->id & V4L2_STD_DK)
+                                norms |= 0x08;
+                        if (dev->tvnorm->id & V4L2_STD_MN)
+                                norms |= 0x40;
+                        if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
+                                norms |= 0x10;
                         if (0 == norms)
                                 norms = 0x7c; /* all */
                         dprintk("scanning:%s%s%s%s%s\n",
@@ -1034,7 +1017,11 @@ int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 
 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
 {
-        if (dev->thread.pid >= 0) {
+        if (dev->input->amux != TV) {
+                dprintk("sound IF not in use, skipping scan\n");
+                dev->automute = 0;
+                saa7134_tvaudio_setmute(dev);
+        } else if (dev->thread.pid >= 0) {
                 dev->thread.mode = UNSET;
                 dev->thread.scan2++;
                 wake_up_interruptible(&dev->thread.wq);