aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/tda7432.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/tda7432.c')
-rw-r--r--drivers/media/video/tda7432.c536
1 files changed, 0 insertions, 536 deletions
diff --git a/drivers/media/video/tda7432.c b/drivers/media/video/tda7432.c
deleted file mode 100644
index 4963d426488..00000000000
--- a/drivers/media/video/tda7432.c
+++ /dev/null
@@ -1,536 +0,0 @@
-/*
- * For the STS-Thompson TDA7432 audio processor chip
- *
- * Handles audio functions: volume, balance, tone, loudness
- * 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>
- *
- * 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
- *
- * OPTIONS:
- * debug - set to 1 if you'd like to see debug messages
- * set to 2 if you'd like to be inundated with debug messages
- *
- * loudness - set between 0 and 15 for varying degrees of loudness effect
- *
- * maxvol - set maximium volume to +20db (1), default is 0db(0)
- *
- *
- * Revision: 0.7 - maxvol module parm to set maximium volume 0db or +20db
- * store if muted so we can return it
- * change balance only if flaged to
- * Revision: 0.6 - added tone controls
- * Revision: 0.5 - Fixed odd balance problem
- * Revision: 0.4 - added muting
- * Revision: 0.3 - Fixed silly reversed volume controls. :)
- * Revision: 0.2 - Cleaned up #defines
- * fixed volume control
- * Added I2C_DRIVERID_TDA7432
- * added loudness insmod control
- * Revision: 0.1 - initial version
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/videodev2.h>
-#include <linux/i2c.h>
-
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/i2c-addr.h>
-
-#ifndef VIDEO_AUDIO_BALANCE
-# define VIDEO_AUDIO_BALANCE 32
-#endif
-
-MODULE_AUTHOR("Eric Sandeen <eric_sandeen@bigfoot.com>");
-MODULE_DESCRIPTION("bttv driver for the tda7432 audio processor chip");
-MODULE_LICENSE("GPL");
-
-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_param(maxvol, int, S_IRUGO | S_IWUSR);
-
-
-/* Address to scan (I2C address of this chip) */
-static unsigned short normal_i2c[] = {
- I2C_ADDR_TDA7432 >> 1,
- I2C_CLIENT_END,
-};
-
-I2C_CLIENT_INSMOD;
-
-/* Structure of address and subaddresses for the tda7432 */
-
-struct tda7432 {
- int addr;
- int input;
- int volume;
- int muted;
- int bass, treble;
- int lf, lr, rf, rr;
- int loud;
- struct i2c_client c;
-};
-static struct i2c_driver driver;
-static struct i2c_client client_template;
-
-/* The TDA7432 is made by STS-Thompson
- * http://www.st.com
- * http://us.st.com/stonline/books/pdf/docs/4056.pdf
- *
- * TDA7432: I2C-bus controlled basic audio processor
- *
- * The TDA7432 controls basic audio functions like volume, balance,
- * and tone control (including loudness). It also has four channel
- * 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 */
-
-#define TDA7432_IN 0x00 /* Input select */
-#define TDA7432_VL 0x01 /* Volume */
-#define TDA7432_TN 0x02 /* Bass, Treble (Tone) */
-#define TDA7432_LF 0x03 /* Attenuation LF (Left Front) */
-#define TDA7432_LR 0x04 /* Attenuation LR (Left Rear) */
-#define TDA7432_RF 0x05 /* Attenuation RF (Right Front) */
-#define TDA7432_RR 0x06 /* Attenuation RR (Right Rear) */
-#define TDA7432_LD 0x07 /* Loudness */
-
-
- /* Masks for bits in TDA7432 subaddresses */
-
-/* Many of these not used - just for documentation */
-
-/* Subaddress 0x00 - Input selection and bass control */
-
-/* Bits 0,1,2 control input:
- * 0x00 - Stereo input
- * 0x02 - Mono input
- * 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_BASS_NORM 1 << 4
-
-/* Subaddress 0x01 - Volume */
-
-/* Lower 7 bits control volume from -79dB to +32dB in 1dB steps
- * Recommended maximum is +20 dB
- *
- * +32dB: 0x00
- * +20dB: 0x0c
- * 0dB: 0x20
- * -79dB: 0x6f
- *
- * MSB (bit 7) controls loudness: 1/0 is loudness on/off
- */
-
-#define TDA7432_VOL_0DB 0x20
-#define TDA7432_LD_ON 1 << 7
-
-
-/* Subaddress 0x02 - Tone control */
-
-/* Bits 0,1,2 control absolute treble gain from 0dB to 14dB
- * 0x0 is 14dB, 0x7 is 0dB
- *
- * Bit 3 controls treble attenuation/gain (sign)
- * 1 = gain (+)
- * 0 = attenuation (-)
- *
- * 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 (-)
- *
- * Example:
- * 1 1 0 1 0 1 0 1 is +4dB bass, -4dB treble
- */
-
-#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 */
-/* Subaddress 0x06 - Right Rear attenuation */
-
-/* Bits 0,1,2,3,4 control attenuation from 0dB to -37.5dB
- * in 1.5dB steps.
- *
- * 0x00 is 0dB
- * 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)
- * Bits 6,7 unused
- */
-
-#define TDA7432_ATTEN_0DB 0x00
-#define TDA7432_MUTE 0x1 << 5
-
-
-/* Subaddress 0x07 - Loudness Control */
-
-/* Bits 0,1,2,3 control loudness from 0dB to -15dB in 1dB steps
- * when bit 4 is NOT set
- *
- * 0x0 is 0dB
- * 0xf is -15dB
- *
- * If bit 4 is set, then there is a flat attenuation according to
- * the lower 4 bits, as above.
- *
- * Bits 5,6,7 unused
- */
-
-
-
-/* Begin code */
-
-static int tda7432_write(struct i2c_client *client, int subaddr, int val)
-{
- unsigned char buffer[2];
- 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)) {
- v4l_err(client,"I/O error, trying (write %d 0x%x)\n",
- subaddr, val);
- return -1;
- }
- return 0;
-}
-
-/* I don't think we ever actually _read_ the chip... */
-
-static int tda7432_set(struct i2c_client *client)
-{
- struct tda7432 *t = i2c_get_clientdata(client);
- unsigned char buf[16];
- 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[1] = t->input;
- buf[2] = t->volume;
- buf[3] = t->bass;
- buf[4] = t->treble;
- buf[5] = t->lf;
- buf[6] = t->lr;
- buf[7] = t->rf;
- buf[8] = t->rr;
- buf[9] = t->loud;
- if (10 != i2c_master_send(client,buf,10)) {
- v4l_err(client,"I/O error, trying tda7432_set\n");
- return -1;
- }
-
- return 0;
-}
-
-static void do_tda7432_init(struct i2c_client *client)
-{
- struct tda7432 *t = i2c_get_clientdata(client);
- 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 */
- t->volume = 0x3b ; /* -27dB Volume */
- if (loudness) /* Turn loudness on? */
- t->volume |= TDA7432_LD_ON;
- t->muted = 1;
- t->treble = TDA7432_TREBLE_0DB; /* 0dB Treble */
- t->bass = TDA7432_BASS_0DB; /* 0dB Bass */
- t->lf = TDA7432_ATTEN_0DB; /* 0dB attenuation */
- t->lr = TDA7432_ATTEN_0DB; /* 0dB attenuation */
- t->rf = TDA7432_ATTEN_0DB; /* 0dB attenuation */
- t->rr = TDA7432_ATTEN_0DB; /* 0dB attenuation */
- t->loud = loudness; /* insmod parameter */
-
- tda7432_set(client);
-}
-
-/* *********************** *
- * i2c interface functions *
- * *********************** */
-
-static int tda7432_attach(struct i2c_adapter *adap, int addr, int kind)
-{
- struct tda7432 *t;
- struct i2c_client *client;
-
- t = kzalloc(sizeof *t,GFP_KERNEL);
- if (!t)
- return -ENOMEM;
-
- client = &t->c;
- memcpy(client,&client_template,sizeof(struct i2c_client));
- client->adapter = adap;
- client->addr = addr;
- i2c_set_clientdata(client, t);
-
- 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)
-{
- if (adap->class & I2C_CLASS_TV_ANALOG)
- return i2c_probe(adap, &addr_data, tda7432_attach);
- return 0;
-}
-
-static int tda7432_detach(struct i2c_client *client)
-{
- struct tda7432 *t = i2c_get_clientdata(client);
-
- do_tda7432_init(client);
- i2c_detach_client(client);
-
- kfree(t);
- return 0;
-}
-
-static int tda7432_get_ctrl(struct i2c_client *client,
- struct v4l2_control *ctrl)
-{
- struct tda7432 *t = i2c_get_clientdata(client);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value=t->muted;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- if (!maxvol){ /* max +20db */
- ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 630;
- } else { /* max 0db */
- ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 829;
- }
- return 0;
- case V4L2_CID_AUDIO_BALANCE:
- {
- if ( (t->lf) < (t->rf) )
- /* right is attenuated, balance shifted left */
- ctrl->value = (32768 - 1057*(t->rf));
- else
- /* left is attenuated, balance shifted right */
- ctrl->value = (32768 + 1057*(t->lf));
- return 0;
- }
- case V4L2_CID_AUDIO_BASS:
- {
- /* Bass/treble 4 bits each */
- int bass=t->bass;
- if(bass >= 0x8)
- bass = ~(bass - 0x8) & 0xf;
- ctrl->value = (bass << 12)+(bass << 8)+(bass << 4)+(bass);
- return 0;
- }
- case V4L2_CID_AUDIO_TREBLE:
- {
- int treble=t->treble;
- if(treble >= 0x8)
- treble = ~(treble - 0x8) & 0xf;
- ctrl->value = (treble << 12)+(treble << 8)+(treble << 4)+(treble);
- return 0;
- }
- }
- return -EINVAL;
-}
-
-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);
- return 0;
- case V4L2_CID_AUDIO_BALANCE:
- if (ctrl->value < 32768) {
- /* shifted to left, attenuate right */
- t->rr = (32768 - ctrl->value)/1057;
- t->rf = t->rr;
- t->lr = TDA7432_ATTEN_0DB;
- t->lf = TDA7432_ATTEN_0DB;
- } else if(ctrl->value > 32769) {
- /* shifted to right, attenuate left */
- t->lf = (ctrl->value - 32768)/1057;
- t->lr = t->lf;
- t->rr = TDA7432_ATTEN_0DB;
- t->rf = TDA7432_ATTEN_0DB;
- } 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;
- }
-
- /* 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;
-}
-
-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);
-
- case VIDIOC_G_CTRL:
- return tda7432_get_ctrl(client, arg);
-
- } /* end of (cmd) switch */
-
- return 0;
-}
-
-static struct i2c_driver driver = {
- .driver = {
- .name = "tda7432",
- },
- .id = I2C_DRIVERID_TDA7432,
- .attach_adapter = tda7432_probe,
- .detach_client = tda7432_detach,
- .command = tda7432_command,
-};
-
-static struct i2c_client client_template =
-{
- .name = "tda7432",
- .driver = &driver,
-};
-
-static int __init tda7432_init(void)
-{
- if ( (loudness < 0) || (loudness > 15) ) {
- printk(KERN_ERR "loudness parameter must be between 0 and 15\n");
- return -EINVAL;
- }
-
- return i2c_add_driver(&driver);
-}
-
-static void __exit tda7432_fini(void)
-{
- i2c_del_driver(&driver);
-}
-
-module_init(tda7432_init);
-module_exit(tda7432_fini);
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-17 10:08:09 +0000