/*
* For the STS-Thompson TDA7432 audio processor chip
- *
+ *
* Handles audio functions: volume, balance, tone, loudness
- * This driver will not complain if used with any
+ * This driver will not complain if used with any
* other i2c device with the same address.
*
* Muting and tone control by Jonathan Isom <jisom@ematic.com>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
-#include "bttv.h"
-#include <media/audiochip.h>
-#include <media/id.h>
+#include <media/v4l2-common.h>
+#include <media/i2c-addr.h>
#ifndef VIDEO_AUDIO_BALANCE
# define VIDEO_AUDIO_BALANCE 32
MODULE_DESCRIPTION("bttv driver for the tda7432 audio processor chip");
MODULE_LICENSE("GPL");
-MODULE_PARM(debug,"i");
-MODULE_PARM(loudness,"i");
+static int maxvol;
+static int loudness; /* disable loudness by default */
+static int debug; /* insmod parameter */
+module_param(debug, int, S_IRUGO | S_IWUSR);
+module_param(loudness, int, S_IRUGO);
MODULE_PARM_DESC(maxvol,"Set maximium volume to +20db (0), default is 0db(1)");
-MODULE_PARM(maxvol,"i");
-static int maxvol = 0;
-static int loudness = 0; /* disable loudness by default */
-static int debug = 0; /* insmod parameter */
+module_param(maxvol, int, S_IRUGO | S_IWUSR);
/* Address to scan (I2C address of this chip) */
static unsigned short normal_i2c[] = {
- I2C_TDA7432 >> 1,
+ I2C_ADDR_TDA7432 >> 1,
I2C_CLIENT_END,
};
-static unsigned short normal_i2c_range[] = { I2C_CLIENT_END, I2C_CLIENT_END };
I2C_CLIENT_INSMOD;
/* Structure of address and subaddresses for the tda7432 */
static struct i2c_driver driver;
static struct i2c_client client_template;
-#define dprintk if (debug) printk
-#define d2printk if (debug > 1) printk
-
/* The TDA7432 is made by STS-Thompson
* http://www.st.com
* http://us.st.com/stonline/books/pdf/docs/4056.pdf
* output (for front and rear). Since most vidcap cards probably
* don't have 4 channel output, this driver will set front & rear
* together (no independent control).
- */
+ */
/* Subaddresses for TDA7432 */
* 0x03 - Mute (Using Attenuators Plays better with modules)
* Mono probably isn't used - I'm guessing only the stereo
* input is connected on most cards, so we'll set it to stereo.
- *
+ *
* Bit 3 controls bass cut: 0/1 is non-symmetric/symmetric bass cut
* Bit 4 controls bass range: 0/1 is extended/standard bass range
- *
+ *
* Highest 3 bits not used
*/
-
+
#define TDA7432_STEREO_IN 0
#define TDA7432_MONO_IN 2 /* Probably won't be used */
#define TDA7432_BASS_SYM 1 << 3
#define TDA7432_LD_ON 1 << 7
-/* Subaddress 0x02 - Tone control */
+/* Subaddress 0x02 - Tone control */
/* Bits 0,1,2 control absolute treble gain from 0dB to 14dB
* 0x0 is 14dB, 0x7 is 0dB
* Bits 4,5,6 control absolute bass gain from 0dB to 14dB
* (This is only true for normal base range, set in 0x00)
* 0x0 << 4 is 14dB, 0x7 is 0dB
- *
+ *
* Bit 7 controls bass attenuation/gain (sign)
* 1 << 7 = gain (+)
- * 0 << 7 = attenuation (-)
+ * 0 << 7 = attenuation (-)
*
* Example:
* 1 1 0 1 0 1 0 1 is +4dB bass, -4dB treble
*/
-#define TDA7432_TREBLE_0DB 0xf
+#define TDA7432_TREBLE_0DB 0xf
#define TDA7432_TREBLE 7
#define TDA7432_TREBLE_GAIN 1 << 3
#define TDA7432_BASS_0DB 0xf
#define TDA7432_BASS 7 << 4
#define TDA7432_BASS_GAIN 1 << 7
-
+
/* Subaddress 0x03 - Left Front attenuation */
/* Subaddress 0x04 - Left Rear attenuation */
/* Subaddress 0x05 - Right Front attenuation */
* 0x1f is -37.5dB
*
* Bit 5 mutes that channel when set (1 = mute, 0 = unmute)
- * We'll use the mute on the input, though (above)
+ * We'll use the mute on the input, though (above)
* Bits 6,7 unused
*/
*
* Bits 5,6,7 unused
*/
-
-
+
+
/* Begin code */
static int tda7432_write(struct i2c_client *client, int subaddr, int val)
{
unsigned char buffer[2];
- d2printk("tda7432: In tda7432_write\n");
- dprintk("tda7432: Writing %d 0x%x\n", subaddr, val);
+ v4l_dbg(2, debug,client,"In tda7432_write\n");
+ v4l_dbg(1, debug,client,"Writing %d 0x%x\n", subaddr, val);
buffer[0] = subaddr;
buffer[1] = val;
if (2 != i2c_master_send(client,buffer,2)) {
- printk(KERN_WARNING "tda7432: I/O error, trying (write %d 0x%x)\n",
+ v4l_err(client,"I/O error, trying (write %d 0x%x)\n",
subaddr, val);
return -1;
}
}
/* I don't think we ever actually _read_ the chip... */
-#if 0
-static int tda7432_read(struct i2c_client *client)
-{
- unsigned char buffer;
- d2printk("tda7432: In tda7432_read\n");
- if (1 != i2c_master_recv(client,&buffer,1)) {
- printk(KERN_WARNING "tda7432: I/O error, trying (read)\n");
- return -1;
- }
- dprintk("tda7432: Read 0x%02x\n", buffer);
- return buffer;
-}
-#endif
static int tda7432_set(struct i2c_client *client)
{
struct tda7432 *t = i2c_get_clientdata(client);
unsigned char buf[16];
- d2printk("tda7432: In tda7432_set\n");
-
- dprintk(KERN_INFO
+ v4l_dbg(2, debug,client,"In tda7432_set\n");
+
+ v4l_dbg(1, debug,client,
"tda7432: 7432_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n",
t->input,t->volume,t->bass,t->treble,t->lf,t->lr,t->rf,t->rr,t->loud);
buf[0] = TDA7432_IN;
buf[8] = t->rr;
buf[9] = t->loud;
if (10 != i2c_master_send(client,buf,10)) {
- printk(KERN_WARNING "tda7432: I/O error, trying tda7432_set\n");
+ v4l_err(client,"I/O error, trying tda7432_set\n");
return -1;
}
static void do_tda7432_init(struct i2c_client *client)
{
struct tda7432 *t = i2c_get_clientdata(client);
- d2printk("tda7432: In tda7432_init\n");
+ v4l_dbg(2, debug,client,"In tda7432_init\n");
t->input = TDA7432_STEREO_IN | /* Main (stereo) input */
TDA7432_BASS_SYM | /* Symmetric bass cut */
- TDA7432_BASS_NORM; /* Normal bass range */
+ TDA7432_BASS_NORM; /* Normal bass range */
t->volume = 0x3b ; /* -27dB Volume */
if (loudness) /* Turn loudness on? */
- t->volume |= TDA7432_LD_ON;
+ t->volume |= TDA7432_LD_ON;
t->muted = VIDEO_AUDIO_MUTE;
t->treble = TDA7432_TREBLE_0DB; /* 0dB Treble */
t->bass = TDA7432_BASS_0DB; /* 0dB Bass */
{
struct tda7432 *t;
struct i2c_client *client;
- d2printk("tda7432: In tda7432_attach\n");
- t = kmalloc(sizeof *t,GFP_KERNEL);
+ t = kzalloc(sizeof *t,GFP_KERNEL);
if (!t)
return -ENOMEM;
- memset(t,0,sizeof *t);
client = &t->c;
- memcpy(client,&client_template,sizeof(struct i2c_client));
- client->adapter = adap;
- client->addr = addr;
+ memcpy(client,&client_template,sizeof(struct i2c_client));
+ client->adapter = adap;
+ client->addr = addr;
i2c_set_clientdata(client, t);
-
- do_tda7432_init(client);
- printk(KERN_INFO "tda7432: init\n");
+ do_tda7432_init(client);
i2c_attach_client(client);
+
+ v4l_info(client, "chip found @ 0x%x (%s)\n", addr << 1, adap->name);
return 0;
}
static int tda7432_probe(struct i2c_adapter *adap)
{
-#ifdef I2C_CLASS_TV_ANALOG
if (adap->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adap, &addr_data, tda7432_attach);
-#else
- if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848))
- return i2c_probe(adap, &addr_data, tda7432_attach);
-#endif
return 0;
}
do_tda7432_init(client);
i2c_detach_client(client);
-
+
kfree(t);
return 0;
}
unsigned int cmd, void *arg)
{
struct tda7432 *t = i2c_get_clientdata(client);
- d2printk("tda7432: In tda7432_command\n");
+ 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;
- dprintk("tda7432: VIDIOCGAUDIO\n");
va->flags |= VIDEO_AUDIO_VOLUME |
VIDEO_AUDIO_BASS |
va->mode |= VIDEO_SOUND_STEREO;
/* Master volume control
* V4L volume is min 0, max 65535
- * TDA7432 Volume:
+ * TDA7432 Volume:
* Min (-79dB) is 0x6f
* Max (+20dB) is 0x07 (630)
* Max (0dB) is 0x20 (829)
} else { /* max 0db */
va->volume = ( 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
* attenuation exists for lf, lr, rf, rr
* we use only lf and rf (front channels)
*/
-
+
if ( (t->lf) < (t->rf) )
/* right is attenuated, balance shifted left */
va->balance = (32768 - 1057*(t->rf));
else
/* left is attenuated, balance shifted right */
va->balance = (32768 + 1057*(t->lf));
-
- /* Bass/treble 4 bits each */
+
+ /* Bass/treble 4 bits each */
va->bass=t->bass;
if(va->bass >= 0x8)
va->bass = ~(va->bass - 0x8) & 0xf;
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 */
}
case VIDIOCSAUDIO:
{
struct video_audio *va = arg;
- dprintk("tda7432: VIDEOCSAUDIO\n");
if(va->flags & VIDEO_AUDIO_VOLUME){
if(!maxvol){ /* max +20db */
} else { /* max 0db */
t->volume = 0x6f - ((va->volume)/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(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)
+ if (va->balance < 32768)
{
/* shifted to left, attenuate right */
t->rr = (32768 - va->balance)/1057;
t->rf = t->rr;
t->lr = TDA7432_ATTEN_0DB;
- t->lf = TDA7432_ATTEN_0DB;
+ t->lf = TDA7432_ATTEN_0DB;
}
else if(va->balance > 32769)
{
t->lf = (va->balance - 32768)/1057;
t->lr = t->lf;
t->rr = TDA7432_ATTEN_0DB;
- t->rf = TDA7432_ATTEN_0DB;
+ t->rf = TDA7432_ATTEN_0DB;
}
- else
+ else
{
- /* centered */
+ /* centered */
t->rr = TDA7432_ATTEN_0DB;
t->rf = TDA7432_ATTEN_0DB;
t->lf = TDA7432_ATTEN_0DB;
t->lr = TDA7432_ATTEN_0DB;
}
}
-
- t->muted=(va->flags & VIDEO_AUDIO_MUTE);
+
+ t->muted=(va->flags & VIDEO_AUDIO_MUTE);
if (t->muted)
{
- /* Mute & update balance*/
+ /* 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_RF, t->rf);
tda7432_write(client,TDA7432_RR, t->rr);
}
-
+
break;
} /* end of VIDEOCSAUDIO case */
- default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */
-
- /* nothing */
- d2printk("tda7432: Default\n");
-
} /* end of (cmd) switch */
return 0;
}
static struct i2c_driver driver = {
- .owner = THIS_MODULE,
- .name = "i2c tda7432 driver",
+ .driver = {
+ .name = "tda7432",
+ },
.id = I2C_DRIVERID_TDA7432,
- .flags = I2C_DF_NOTIFY,
.attach_adapter = tda7432_probe,
- .detach_client = tda7432_detach,
- .command = tda7432_command,
+ .detach_client = tda7432_detach,
+ .command = tda7432_command,
};
static struct i2c_client client_template =
{
- I2C_DEVNAME("tda7432"),
- .id = -1,
- .driver = &driver,
+ .name = "tda7432",
+ .driver = &driver,
};
-static int tda7432_init(void)
+static int __init tda7432_init(void)
{
if ( (loudness < 0) || (loudness > 15) ) {
- printk(KERN_ERR "tda7432: loudness parameter must be between 0 and 15\n");
+ printk(KERN_ERR "loudness parameter must be between 0 and 15\n");
return -EINVAL;
}
- i2c_add_driver(&driver);
- return 0;
+
+ return i2c_add_driver(&driver);
}
-static void tda7432_fini(void)
+static void __exit tda7432_fini(void)
{
i2c_del_driver(&driver);
}
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