V4L/DVB (4219): Av7110: analog sound output of DVB-C rev 2.3

Added support for the msp34x5 audio dac. Analog sound output of
Technotrend DVB-C 2300 (aka Hauppauge Nexus-CA) works now.

Signed-off-by: Tim Kaiser <timkaiser@t-online.de>
Signed-off-by: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

3 files changed, 64 insertions, 19 deletions

diff --git a/drivers/media/dvb/ttpci/av7110.c b/drivers/media/dvb/ttpci/av7110.c
index 8832f80c05f7..7a5c99c200e8 100644
--- a/drivers/media/dvb/ttpci/av7110.c
+++ b/drivers/media/dvb/ttpci/av7110.c
@@ -152,13 +152,9 @@ static void init_av7110_av(struct av7110 *av7110)
         /* remaining inits according to card and frontend type */
         av7110->analog_tuner_flags = 0;
         av7110->current_input = 0;
-        if (dev->pci->subsystem_vendor == 0x13c2 && dev->pci->subsystem_device == 0x000a) {
-                printk("dvb-ttpci: MSP3415 audio DAC @ card %d\n",
-                        av7110->dvb_adapter.num);
-                av7110->adac_type = DVB_ADAC_MSP34x5;
+        if (dev->pci->subsystem_vendor == 0x13c2 && dev->pci->subsystem_device == 0x000a)
                 av7110_fw_cmd(av7110, COMTYPE_AUDIODAC, ADSwitch, 1, 0); // SPDIF on
-        }
-        else if (i2c_writereg(av7110, 0x20, 0x00, 0x00) == 1) {
+        if (i2c_writereg(av7110, 0x20, 0x00, 0x00) == 1) {
                 printk ("dvb-ttpci: Crystal audio DAC @ card %d detected\n",
                         av7110->dvb_adapter.num);
                 av7110->adac_type = DVB_ADAC_CRYSTAL;
diff --git a/drivers/media/dvb/ttpci/av7110_av.c b/drivers/media/dvb/ttpci/av7110_av.c
index 2eff09f638d3..0f3a044aeb17 100644
--- a/drivers/media/dvb/ttpci/av7110_av.c
+++ b/drivers/media/dvb/ttpci/av7110_av.c
@@ -318,7 +318,17 @@ int av7110_set_volume(struct av7110 *av7110, int volleft, int volright)
                 msp_writereg(av7110, MSP_WR_DSP, 0x0000, val); /* loudspeaker */
                 msp_writereg(av7110, MSP_WR_DSP, 0x0006, val); /* headphonesr */
                 return 0;
+
+        case DVB_ADAC_MSP34x5:
+                vol = (volleft > volright) ? volleft : volright;
+                val = (vol * 0x73 / 255) << 8;
+                if (vol > 0)
+                        balance = ((volright - volleft) * 127) / vol;
+                msp_writereg(av7110, MSP_WR_DSP, 0x0001, balance << 8);
+                msp_writereg(av7110, MSP_WR_DSP, 0x0000, val); /* loudspeaker */
+                return 0;
         }
+
         return 0;
 }
 
@@ -1267,23 +1277,32 @@ static int dvb_audio_ioctl(struct inode *inode, struct file *file,
                 switch(av7110->audiostate.channel_select) {
                 case AUDIO_STEREO:
                         ret = audcom(av7110, AUDIO_CMD_STEREO);
-                        if (!ret)
+                        if (!ret) {
                                 if (av7110->adac_type == DVB_ADAC_CRYSTAL)
                                         i2c_writereg(av7110, 0x20, 0x02, 0x49);
+                                else if (av7110->adac_type == DVB_ADAC_MSP34x5)
+                                        msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0220);
+                        }
                         break;
 
                 case AUDIO_MONO_LEFT:
                         ret = audcom(av7110, AUDIO_CMD_MONO_L);
-                        if (!ret)
+                        if (!ret) {
                                 if (av7110->adac_type == DVB_ADAC_CRYSTAL)
                                         i2c_writereg(av7110, 0x20, 0x02, 0x4a);
+                                else if (av7110->adac_type == DVB_ADAC_MSP34x5)
+                                        msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0200);
+                        }
                         break;
 
                 case AUDIO_MONO_RIGHT:
                         ret = audcom(av7110, AUDIO_CMD_MONO_R);
-                        if (!ret)
+                        if (!ret) {
                                 if (av7110->adac_type == DVB_ADAC_CRYSTAL)
                                         i2c_writereg(av7110, 0x20, 0x02, 0x45);
+                                else if (av7110->adac_type == DVB_ADAC_MSP34x5)
+                                        msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0210);
+                        }
                         break;
 
                 default:
diff --git a/drivers/media/dvb/ttpci/av7110_v4l.c b/drivers/media/dvb/ttpci/av7110_v4l.c
index 603a22e4bfe2..64055461559d 100644
--- a/drivers/media/dvb/ttpci/av7110_v4l.c
+++ b/drivers/media/dvb/ttpci/av7110_v4l.c
@@ -42,7 +42,18 @@
 int msp_writereg(struct av7110 *av7110, u8 dev, u16 reg, u16 val)
 {
         u8 msg[5] = { dev, reg >> 8, reg & 0xff, val >> 8 , val & 0xff };
-        struct i2c_msg msgs = { .flags = 0, .addr = 0x40, .len = 5, .buf = msg };
+        struct i2c_msg msgs = { .flags = 0, .len = 5, .buf = msg };
+
+        switch (av7110->adac_type) {
+        case DVB_ADAC_MSP34x0:
+                msgs.addr = 0x40;
+                break;
+        case DVB_ADAC_MSP34x5:
+                msgs.addr = 0x42;
+                break;
+        default:
+                return 0;
+        }
 
         if (i2c_transfer(&av7110->i2c_adap, &msgs, 1) != 1) {
                 dprintk(1, "dvb-ttpci: failed @ card %d, %u = %u\n",
@@ -57,10 +68,23 @@ static int msp_readreg(struct av7110 *av7110, u8 dev, u16 reg, u16 *val)
         u8 msg1[3] = { dev, reg >> 8, reg & 0xff };
         u8 msg2[2];
         struct i2c_msg msgs[2] = {
-                { .flags = 0,        .addr = 0x40, .len = 3, .buf = msg1 },
-                { .flags = I2C_M_RD, .addr = 0x40, .len = 2, .buf = msg2 }
+                { .flags = 0       , .len = 3, .buf = msg1 },
+                { .flags = I2C_M_RD, .len = 2, .buf = msg2 }
         };
 
+        switch (av7110->adac_type) {
+        case DVB_ADAC_MSP34x0:
+                msgs[0].addr = 0x40;
+                msgs[1].addr = 0x40;
+                break;
+        case DVB_ADAC_MSP34x5:
+                msgs[0].addr = 0x42;
+                msgs[1].addr = 0x42;
+                break;
+        default:
+                return 0;
+        }
+
         if (i2c_transfer(&av7110->i2c_adap, &msgs[0], 2) != 2) {
                 dprintk(1, "dvb-ttpci: failed @ card %d, %u\n",
                        av7110->dvb_adapter.num, reg);
@@ -678,17 +702,23 @@ int av7110_init_analog_module(struct av7110 *av7110)
 {
         u16 version1, version2;
 
-        if (i2c_writereg(av7110, 0x80, 0x0, 0x80) != 1
-            || i2c_writereg(av7110, 0x80, 0x0, 0) != 1)
+        if (i2c_writereg(av7110, 0x80, 0x0, 0x80) == 1 &&
+            i2c_writereg(av7110, 0x80, 0x0, 0) == 1) {
+                printk("dvb-ttpci: DVB-C analog module @ card %d detected, initializing MSP3400\n",
+                        av7110->dvb_adapter.num);
+                av7110->adac_type = DVB_ADAC_MSP34x0;
+        } else if (i2c_writereg(av7110, 0x84, 0x0, 0x80) == 1 &&
+                   i2c_writereg(av7110, 0x84, 0x0, 0) == 1) {
+                printk("dvb-ttpci: DVB-C analog module @ card %d detected, initializing MSP3415\n",
+                        av7110->dvb_adapter.num);
+                av7110->adac_type = DVB_ADAC_MSP34x5;
+        } else
                 return -ENODEV;
 
-        printk("dvb-ttpci: DVB-C analog module @ card %d detected, initializing MSP3400\n",
-                av7110->dvb_adapter.num);
-        av7110->adac_type = DVB_ADAC_MSP34x0;
         msleep(100); // the probing above resets the msp...
         msp_readreg(av7110, MSP_RD_DSP, 0x001e, &version1);
         msp_readreg(av7110, MSP_RD_DSP, 0x001f, &version2);
-        dprintk(1, "dvb-ttpci: @ card %d MSP3400 version 0x%04x 0x%04x\n",
+        dprintk(1, "dvb-ttpci: @ card %d MSP34xx version 0x%04x 0x%04x\n",
                 av7110->dvb_adapter.num, version1, version2);
         msp_writereg(av7110, MSP_WR_DSP, 0x0013, 0x0c00);
         msp_writereg(av7110, MSP_WR_DSP, 0x0000, 0x7f00); // loudspeaker + headphone
@@ -697,7 +727,7 @@ int av7110_init_analog_module(struct av7110 *av7110)
         msp_writereg(av7110, MSP_WR_DSP, 0x0004, 0x7f00); // loudspeaker volume
         msp_writereg(av7110, MSP_WR_DSP, 0x000a, 0x0220); // SCART 1 source
         msp_writereg(av7110, MSP_WR_DSP, 0x0007, 0x7f00); // SCART 1 volume
-        msp_writereg(av7110, MSP_WR_DSP, 0x000d, 0x4800); // prescale SCART
+        msp_writereg(av7110, MSP_WR_DSP, 0x000d, 0x1900); // prescale SCART
 
         if (i2c_writereg(av7110, 0x48, 0x01, 0x00)!=1) {
                 INFO(("saa7113 not accessible.\n"));