Skip to content

Commit

Permalink
V4L/DVB (6419): V4L2 port of tda7432 from V4L1 api
Browse files Browse the repository at this point in the history 
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
  • Loading branch information
Mauro Carvalho Chehab committed Jan 25, 2008
1 parent dc3d75d commit 7a00d45
Showing 1 changed file with 121 additions and 111 deletions.
232 changes: 121 additions & 111 deletions drivers/media/video/tda7432.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
* Muting and tone control by Jonathan Isom <jisom@ematic.com>
*
* Copyright (c) 2000 Eric Sandeen <eric_sandeen@bigfoot.com>
* Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
* This code is placed under the terms of the GNU General Public License
* Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
* Which was based on tda8425.c by Greg Alexander (c) 1998
Expand Down Expand Up @@ -276,7 +277,7 @@ static void do_tda7432_init(struct i2c_client *client)
t->volume = 0x3b ; /* -27dB Volume */
if (loudness) /* Turn loudness on? */
t->volume |= TDA7432_LD_ON;
t->muted = VIDEO_AUDIO_MUTE;
t->muted = 1;
t->treble = TDA7432_TREBLE_0DB; /* 0dB Treble */
t->bass = TDA7432_BASS_0DB; /* 0dB Bass */
t->lf = TDA7432_ATTEN_0DB; /* 0dB attenuation */
Expand Down Expand Up @@ -332,151 +333,160 @@ static int tda7432_detach(struct i2c_client *client)
return 0;
}

static int tda7432_command(struct i2c_client *client,
unsigned int cmd, void *arg)
static int tda7432_get_ctrl(struct i2c_client *client,
struct v4l2_control *ctrl)
{
struct tda7432 *t = i2c_get_clientdata(client);
v4l_dbg(2, debug,client,"In tda7432_command\n");
if (debug>1)
v4l_i2c_print_ioctl(client,cmd);

switch (cmd) {
/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
kernel pointer here... */

/* Query card - scale from TDA7432 settings to V4L settings */
case VIDIOCGAUDIO:
{
struct video_audio *va = arg;

va->flags |= VIDEO_AUDIO_VOLUME |
VIDEO_AUDIO_BASS |
VIDEO_AUDIO_TREBLE |
VIDEO_AUDIO_MUTABLE;
if (t->muted)
va->flags |= VIDEO_AUDIO_MUTE;
va->mode |= VIDEO_SOUND_STEREO;
/* Master volume control
* V4L volume is min 0, max 65535
* TDA7432 Volume:
* Min (-79dB) is 0x6f
* Max (+20dB) is 0x07 (630)
* Max (0dB) is 0x20 (829)
* (Mask out bit 7 of vol - it's for the loudness setting)
*/
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value=t->muted;
return 0;
case V4L2_CID_AUDIO_VOLUME:
if (!maxvol){ /* max +20db */
va->volume = ( 0x6f - (t->volume & 0x7F) ) * 630;
ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 630;
} else { /* max 0db */
va->volume = ( 0x6f - (t->volume & 0x7F) ) * 829;
ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 829;
}

/* Balance depends on L,R attenuation
* V4L balance is 0 to 65535, middle is 32768
* TDA7432 attenuation: min (0dB) is 0, max (-37.5dB) is 0x1f
* to scale up to V4L numbers, mult by 1057
* attenuation exists for lf, lr, rf, rr
* we use only lf and rf (front channels)
*/

return 0;
case V4L2_CID_AUDIO_BALANCE:
{
if ( (t->lf) < (t->rf) )
/* right is attenuated, balance shifted left */
va->balance = (32768 - 1057*(t->rf));
ctrl->value = (32768 - 1057*(t->rf));
else
/* left is attenuated, balance shifted right */
va->balance = (32768 + 1057*(t->lf));

ctrl->value = (32768 + 1057*(t->lf));
return 0;
}
case V4L2_CID_AUDIO_BASS:
{
/* Bass/treble 4 bits each */
va->bass=t->bass;
if(va->bass >= 0x8)
va->bass = ~(va->bass - 0x8) & 0xf;
va->bass = (va->bass << 12)+(va->bass << 8)+(va->bass << 4)+(va->bass);
va->treble=t->treble;
if(va->treble >= 0x8)
va->treble = ~(va->treble - 0x8) & 0xf;
va->treble = (va->treble << 12)+(va->treble << 8)+(va->treble << 4)+(va->treble);

break; /* VIDIOCGAUDIO case */
int bass=t->bass;
if(bass >= 0x8)
bass = ~(bass - 0x8) & 0xf;
ctrl->value = (bass << 12)+(bass << 8)+(bass << 4)+(bass);
return 0;
}

/* Set card - scale from V4L settings to TDA7432 settings */
case VIDIOCSAUDIO:
case V4L2_CID_AUDIO_TREBLE:
{
struct video_audio *va = arg;
int treble=t->treble;
if(treble >= 0x8)
treble = ~(treble - 0x8) & 0xf;
ctrl->value = (treble << 12)+(treble << 8)+(treble << 4)+(treble);
return 0;
}
}
return -EINVAL;
}

if(va->flags & VIDEO_AUDIO_VOLUME){
if(!maxvol){ /* max +20db */
t->volume = 0x6f - ((va->volume)/630);
} else { /* max 0db */
t->volume = 0x6f - ((va->volume)/829);
}
static int tda7432_set_ctrl(struct i2c_client *client,
struct v4l2_control *ctrl)
{
struct tda7432 *t = i2c_get_clientdata(client);

switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
t->muted=ctrl->value;
break;
case V4L2_CID_AUDIO_VOLUME:
if(!maxvol){ /* max +20db */
t->volume = 0x6f - ((ctrl->value)/630);
} else { /* max 0db */
t->volume = 0x6f - ((ctrl->value)/829);
}
if (loudness) /* Turn on the loudness bit */
t->volume |= TDA7432_LD_ON;

tda7432_write(client,TDA7432_VL, t->volume);
}

if(va->flags & VIDEO_AUDIO_BASS)
{
t->bass = va->bass >> 12;
if(t->bass>= 0x8)
t->bass = (~t->bass & 0xf) + 0x8 ;
}
if(va->flags & VIDEO_AUDIO_TREBLE)
{
t->treble= va->treble >> 12;
if(t->treble>= 0x8)
t->treble = (~t->treble & 0xf) + 0x8 ;
}
if(va->flags & (VIDEO_AUDIO_TREBLE| VIDEO_AUDIO_BASS))
tda7432_write(client,TDA7432_TN, 0x10 | (t->bass << 4) | t->treble );

if(va->flags & VIDEO_AUDIO_BALANCE) {
if (va->balance < 32768)
{
tda7432_write(client,TDA7432_VL, t->volume);
return 0;
case V4L2_CID_AUDIO_BALANCE:
if (ctrl->value < 32768) {
/* shifted to left, attenuate right */
t->rr = (32768 - va->balance)/1057;
t->rr = (32768 - ctrl->value)/1057;
t->rf = t->rr;
t->lr = TDA7432_ATTEN_0DB;
t->lf = TDA7432_ATTEN_0DB;
}
else if(va->balance > 32769)
{
} else if(ctrl->value > 32769) {
/* shifted to right, attenuate left */
t->lf = (va->balance - 32768)/1057;
t->lf = (ctrl->value - 32768)/1057;
t->lr = t->lf;
t->rr = TDA7432_ATTEN_0DB;
t->rf = TDA7432_ATTEN_0DB;
}
else
{
} else {
/* centered */
t->rr = TDA7432_ATTEN_0DB;
t->rf = TDA7432_ATTEN_0DB;
t->lf = TDA7432_ATTEN_0DB;
t->lr = TDA7432_ATTEN_0DB;
}
}
break;
case V4L2_CID_AUDIO_BASS:
t->bass = ctrl->value >> 12;
if(t->bass>= 0x8)
t->bass = (~t->bass & 0xf) + 0x8 ;

tda7432_write(client,TDA7432_TN, 0x10 | (t->bass << 4) | t->treble );
return 0;
case V4L2_CID_AUDIO_TREBLE:
t->treble= ctrl->value >> 12;
if(t->treble>= 0x8)
t->treble = (~t->treble & 0xf) + 0x8 ;

tda7432_write(client,TDA7432_TN, 0x10 | (t->bass << 4) | t->treble );
return 0;
default:
return -EINVAL;
}

t->muted=(va->flags & VIDEO_AUDIO_MUTE);
if (t->muted)
{
/* Mute & update balance*/
tda7432_write(client,TDA7432_LF, t->lf | TDA7432_MUTE);
tda7432_write(client,TDA7432_LR, t->lr | TDA7432_MUTE);
tda7432_write(client,TDA7432_RF, t->rf | TDA7432_MUTE);
tda7432_write(client,TDA7432_RR, t->rr | TDA7432_MUTE);
} else {
tda7432_write(client,TDA7432_LF, t->lf);
tda7432_write(client,TDA7432_LR, t->lr);
tda7432_write(client,TDA7432_RF, t->rf);
tda7432_write(client,TDA7432_RR, t->rr);
}
/* Used for both mute and balance changes */
if (t->muted)
{
/* Mute & update balance*/
tda7432_write(client,TDA7432_LF, t->lf | TDA7432_MUTE);
tda7432_write(client,TDA7432_LR, t->lr | TDA7432_MUTE);
tda7432_write(client,TDA7432_RF, t->rf | TDA7432_MUTE);
tda7432_write(client,TDA7432_RR, t->rr | TDA7432_MUTE);
} else {
tda7432_write(client,TDA7432_LF, t->lf);
tda7432_write(client,TDA7432_LR, t->lr);
tda7432_write(client,TDA7432_RF, t->rf);
tda7432_write(client,TDA7432_RR, t->rr);
}
return 0;
}

break;
static int tda7432_command(struct i2c_client *client,
unsigned int cmd, void *arg)
{
v4l_dbg(2, debug,client,"In tda7432_command\n");
if (debug>1)
v4l_i2c_print_ioctl(client,cmd);

switch (cmd) {
/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
kernel pointer here... */
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;

switch (qc->id) {
case V4L2_CID_AUDIO_MUTE:
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
default:
return -EINVAL;
}
return v4l2_ctrl_query_fill_std(qc);
}
case VIDIOC_S_CTRL:
return tda7432_set_ctrl(client, arg);

} /* end of VIDEOCSAUDIO case */
case VIDIOC_G_CTRL:
return tda7432_get_ctrl(client, arg);

} /* end of (cmd) switch */

Expand Down

0 comments on commit 7a00d45

Please sign in to comment.