[PATCH] v4l: msp3400 update

[linux-2.6-omap-h63xx.git] / drivers / media / video / msp3400.c

diff --git a/drivers/media/video/msp3400.c b/drivers/media/video/msp3400.c
index c97df705df5eae1c5af45e4e7aac86f4a9224e70..7fbb8581a87da7c13e580cdd14e40e67421e4d23 100644 (file)
--- a/drivers/media/video/msp3400.c
+++ b/drivers/media/video/msp3400.c
@@ -380,7 +380,9 @@ static void msp3400c_setvolume(struct i2c_client *client,
        int val = 0, bal = 0;
 
        if (!muted) {
-               val = (volume * 0x7F / 65535) << 8;
+               /* 0x7f instead if 0x73 here has sound quality issues,
+                * probably due to overmodulation + clipping ... */
+               val = (volume * 0x73 / 65535) << 8;
        }
        if (val) {
                bal = (balance / 256) - 128;
@@ -997,7 +999,13 @@ static int msp34xx_modus(int norm)
 {
        switch (norm) {
        case VIDEO_MODE_PAL:
+#if 1
+               /* experimental: not sure this works with all chip versions */
+               return 0x7003;
+#else
+               /* previous value, try this if it breaks ... */
                return 0x1003;
+#endif
        case VIDEO_MODE_NTSC:  /* BTSC */
                return 0x2003;
        case VIDEO_MODE_SECAM:
@@ -1264,6 +1272,7 @@ static int msp34xxg_thread(void *data)
        int val, std, i;
 
        printk("msp34xxg: daemon started\n");
+       msp->source = 1; /* default */
        for (;;) {
                d2printk(KERN_DEBUG "msp34xxg: thread: sleep\n");
                msp34xx_sleep(msp,-1);
@@ -1334,8 +1343,9 @@ static void msp34xxg_set_source(struct i2c_client *client, int source)
 
        /* fix matrix mode to stereo and let the msp choose what
         * to output according to 'source', as recommended
+        * for MONO (source==0) downmixing set bit[7:0] to 0x30
         */
-       int value = (source&0x07)<<8|(source==0 ? 0x00:0x20);
+       int value = (source&0x07)<<8|(source==0 ? 0x30:0x20);
        dprintk("msp34xxg: set source to %d (0x%x)\n", source, value);
        msp3400c_write(client,
                       I2C_MSP3400C_DFP,
@@ -1359,7 +1369,7 @@ static void msp34xxg_set_source(struct i2c_client *client, int source)
        msp3400c_write(client,
                       I2C_MSP3400C_DEM,
                       0x22, /* a2 threshold for stereo/bilingual */
-                      source==0 ? 0x7f0:stereo_threshold);
+                      stereo_threshold);
        msp->source=source;
 }
 
@@ -1394,7 +1404,7 @@ static void msp34xxg_detect_stereo(struct i2c_client *client)
 static void msp34xxg_set_audmode(struct i2c_client *client, int audmode)
 {
        struct msp3400c *msp = i2c_get_clientdata(client);
-       int source = 0;
+       int source;
 
        switch (audmode) {
        case V4L2_TUNER_MODE_MONO:
@@ -1410,9 +1420,10 @@ static void msp34xxg_set_audmode(struct i2c_client *client, int audmode)
        case V4L2_TUNER_MODE_LANG2:
                source=4; /* stereo or B */
                break;
-       default: /* doing nothing: a safe, sane default */
+       default:
                audmode = 0;
-               return;
+               source  = 1;
+               break;
        }
        msp->audmode = audmode;
        msp34xxg_set_source(client, source);
@@ -1514,12 +1525,9 @@ static int msp_attach(struct i2c_adapter *adap, int addr, int kind)
 
        msp->opmode = opmode;
        if (OPMODE_AUTO == msp->opmode) {
-#if 0 /* seems to work for ivtv only, disable by default for now ... */
                if (HAVE_SIMPLER(msp))
                        msp->opmode = OPMODE_SIMPLER;
-               else
-#endif
-               if (HAVE_SIMPLE(msp))
+               else if (HAVE_SIMPLE(msp))
                        msp->opmode = OPMODE_SIMPLE;
                else
                        msp->opmode = OPMODE_MANUAL;