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>

1 files changed, 22 insertions, 3 deletions

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: