patch-2.4.0-test7 linux/drivers/char/tda985x.c
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- Lines: 537
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.0-test6/linux/drivers/char/tda985x.c
- Orig date:
Tue May 23 15:31:34 2000
diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/tda985x.c linux/drivers/char/tda985x.c
@@ -1,536 +0,0 @@
-/*
- * For the TDA9850 and TDA9855 chips
- * (The TDA9855 is used on the Diamond DTV2000 and the TDA9850 is used
- * on STB cards. Other cards probably use these chips as well.)
- * This driver will not complain if used with any
- * other i2c device with the same address.
- *
- * Copyright (c) 1999 Gerd Knorr
- * TDA9850 code and TDA9855.c merger by Eric Sandeen (eric_sandeen@bigfoot.com)
- * 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 flooded with debug messages
- * chip - set to 9850 or 9855 to select your chip (default 9855)
- *
- * TODO:
- * Fix channel change bug - sound goes out when changeing channels, mute
- * and unmote to fix. - Is this still here?
- * Fine tune sound
- * Get rest of capabilities into video_audio struct...
- *
- * Revision 0.5 - cleaned up debugging messages, added debug level=2
- * Revision: 0.4 - check for correct chip= insmod value
- * also cleaned up comments a bit
- * Revision: 0.3 - took out extraneous tda985x_write in tda985x_command
- * Revision: 0.2 - added insmod option chip=
- * Revision: 0.1 - original version
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/malloc.h>
-#include <linux/videodev.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-#include "bttv.h"
-#include "audiochip.h"
-
-MODULE_PARM(debug,"i");
-MODULE_PARM(chip,"i");
-MODULE_PARM_DESC(chip, "Type of chip to handle: 9850 or 9855");
-
-static int debug = 0; /* insmod parameter */
-static int chip = 9855; /* insmod parameter */
-
-/* Addresses to scan */
-#define I2C_TDA985x_L 0xb4
-#define I2C_TDA985x_H 0xb6
-static unsigned short normal_i2c[] = {I2C_CLIENT_END};
-static unsigned short normal_i2c_range[] = {
- I2C_TDA985x_L >> 1,
- I2C_TDA985x_H >> 1,
- I2C_CLIENT_END
-};
-static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
-static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
-static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
-static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
-static unsigned short force[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
-static struct i2c_client_address_data addr_data = {
- normal_i2c, normal_i2c_range,
- probe, probe_range,
- ignore, ignore_range,
- force
-};
-
-/* This is a superset of the TDA9850 and TDA9855 members */
-
-struct tda985x {
- int addr;
- int rvol, lvol;
- int bass, treble, sub;
- int c4, c5, c6, c7;
- int a1, a2, a3;
-};
-
-static struct i2c_driver driver;
-static struct i2c_client client_template;
-
-#define dprintk if (debug) printk
-#define d2printk if (debug == 2) printk
-
-/* The TDA9850 and TDA9855 are both made by Philips Semiconductor
- * http://www.semiconductors.philips.com
- * TDA9850: I2C-bus controlled BTSC stereo/SAP decoder
- * TDA9855: I2C-bus controlled BTSC stereo/SAP decoder and audio processor
- *
- * The TDA9850 has more or less a subset of the functions that the TDA9855
- * has. As a result, we can re-use many of these defines. Anything with
- * TDA9855 is specific to that chip, anything with TDA9850 is specific
- * to that chip, and anything with TDA985x is valid for either.
- *
- * To complicate things further, the TDA9850 uses labels C1 through C4
- * for subaddresses 0x04 through 0x07, while the TDA9855 uses
- * C1 through C3 for subadresses 0x05 through 0x07 - quite confusing.
- * To help keep things straight, I have renamed the various C[1,4] labels
- * to C[4,7] so that the numerical label matches the hex value of the
- * subaddress for both chips. At least the A[1,3] labels line up. :)
- */
-
- /* subaddresses for TDA9855 */
-#define TDA9855_VR 0x00 /* Volume, right */
-#define TDA9855_VL 0x01 /* Volume, left */
-#define TDA9855_BA 0x02 /* Bass */
-#define TDA9855_TR 0x03 /* Treble */
-#define TDA9855_SW 0x04 /* Subwoofer - not connected on DTV2000 */
-
- /* subaddresses for TDA9850 */
-#define TDA9850_C4 0x04 /* Control 1 for TDA9850 */
-
- /* subaddesses for both chips */
-#define TDA985x_C5 0x05 /* Control 2 for TDA9850, Control 1 for TDA9855 */
-#define TDA985x_C6 0x06 /* Control 3 for TDA9850, Control 2 for TDA9855 */
-#define TDA985x_C7 0x07 /* Control 4 for TDA9850, Control 3 for TDA9855 */
-#define TDA985x_A1 0x08 /* Alignment 1 for both chips */
-#define TDA985x_A2 0x09 /* Alignment 2 for both chips */
-#define TDA985x_A3 0x0a /* Alignment 3 for both chips */
-
- /* Masks for bits in TDA9855 subaddresses */
-/* 0x00 - VR in TDA9855 */
-/* 0x01 - VL in TDA9855 */
-/* lower 7 bits control gain from -71dB (0x28) to 16dB (0x7f)
- * in 1dB steps - mute is 0x27 */
-
-
-/* 0x02 - BA in TDA9855 */
-/* lower 5 bits control bass gain from -12dB (0x06) to 16.5dB (0x19)
- * in .5dB steps - 0 is 0x0E */
-
-
-/* 0x03 - TR in TDA9855 */
-/* 4 bits << 1 control treble gain from -12dB (0x3) to 12dB (0xb)
- * in 3dB steps - 0 is 0x7 */
-
- /* Masks for bits in both chips' subaddresses */
-/* 0x04 - SW in TDA9855, C4/Control 1 in TDA9850 */
-/* Unique to TDA9855: */
-/* 4 bits << 2 control subwoofer/surround gain from -14db (0x1) to 14db (0xf)
- * in 3dB steps - mute is 0x0 */
-
-/* Unique to TDA9850: */
-/* lower 4 bits control stereo noise threshold, over which stereo turns off
- * set to values of 0x00 through 0x0f for Ster1 through Ster16 */
-
-
-/* 0x05 - C5 - Control 1 in TDA9855 , Control 2 in TDA9850*/
-/* Unique to TDA9855: */
-#define TDA9855_MUTE 1<<7 /* GMU, Mute at outputs */
-#define TDA9855_AVL 1<<6 /* AVL, Automatic Volume Level */
-#define TDA9855_LOUD 1<<5 /* Loudness, 1==off */
-#define TDA9855_SUR 1<<3 /* Surround / Subwoofer 1==.5(L-R) 0==.5(L+R) */
- /* Bits 0 to 3 select various combinations
- * of line in and line out, only the
- * interesting ones are defined */
-#define TDA9855_EXT 1<<2 /* Selects inputs LIR and LIL. Pins 41 & 12 */
-#define TDA9855_INT 0 /* Selects inputs LOR and LOL. (internal) */
-
-/* Unique to TDA9850: */
-/* lower 4 bits contol SAP noise threshold, over which SAP turns off
- * set to values of 0x00 through 0x0f for SAP1 through SAP16 */
-
-
-/* 0x06 - C6 - Control 2 in TDA9855, Control 3 in TDA9850 */
-/* Common to TDA9855 and TDA9850: */
-#define TDA985x_SAP 3<<6 /* Selects SAP output, mute if not received */
-#define TDA985x_STEREO 1<<6 /* Selects Stereo ouput, mono if not received */
-#define TDA985x_MONO 0 /* Forces Mono output */
-#define TDA985x_LMU 1<<3 /* Mute (LOR/LOL for 9855, OUTL/OUTR for 9850) */
-
-/* Unique to TDA9855: */
-#define TDA9855_TZCM 1<<5 /* If set, don't mute till zero crossing */
-#define TDA9855_VZCM 1<<4 /* If set, don't change volume till zero crossing*/
-#define TDA9855_LINEAR 0 /* Linear Stereo */
-#define TDA9855_PSEUDO 1 /* Pseudo Stereo */
-#define TDA9855_SPAT_30 2 /* Spatial Stereo, 30% anti-phase crosstalk */
-#define TDA9855_SPAT_50 3 /* Spatial Stereo, 52% anti-phase crosstalk */
-#define TDA9855_E_MONO 7 /* Forced mono - mono select elseware, so useless*/
-
-
-/* 0x07 - C7 - Control 3 in TDA9855, Control 4 in TDA9850 */
-/* Common to both TDA9855 and TDA9850: */
-/* lower 4 bits control input gain from -3.5dB (0x0) to 4dB (0xF)
- * in .5dB steps - 0dB is 0x7 */
-
-
-/* 0x08, 0x09 - A1 and A2 (read/write) */
-/* Common to both TDA9855 and TDA9850: */
-/* lower 5 bites are wideband and spectral expander alignment
- * from 0x00 to 0x1f - nominal at 0x0f and 0x10 (read/write) */
-#define TDA985x_STP 1<<5 /* Stereo Pilot/detect (read-only) */
-#define TDA985x_SAPP 1<<6 /* SAP Pilot/detect (read-only) */
-#define TDA985x_STS 1<<7 /* Stereo trigger 1= <35mV 0= <30mV (write-only)*/
-
-
-/* 0x0a - A3 */
-/* Common to both TDA9855 and TDA9850: */
-/* lower 3 bits control timing current for alignment: -30% (0x0), -20% (0x1),
- * -10% (0x2), nominal (0x3), +10% (0x6), +20% (0x5), +30% (0x4) */
-#define TDA985x_ADJ 1<<7 /* Stereo adjust on/off (wideband and spectral */
-
-/* Unique to TDA9855: */
-/* 2 bits << 5 control AVL attack time: 420ohm (0x0), 730ohm (0x2),
- * 1200ohm (0x1), 2100ohm (0x3) */
-
-
-/* Begin code */
-
-static int tda985x_write(struct i2c_client *client, int subaddr, int val)
-{
- unsigned char buffer[2];
- d2printk("tda985x: In tda985x_write\n");
- dprintk("tda985x: Writing %d 0x%x\n", subaddr, val);
- buffer[0] = subaddr;
- buffer[1] = val;
- if (2 != i2c_master_send(client,buffer,2)) {
- printk(KERN_WARNING "tda985x: I/O error, trying (write %d 0x%x)\n",
- subaddr, val);
- return -1;
- }
- return 0;
-}
-
-static int tda985x_read(struct i2c_client *client)
-{
- unsigned char buffer;
- d2printk("tda985x: In tda985x_read\n");
- if (1 != i2c_master_recv(client,&buffer,1)) {
- printk(KERN_WARNING "tda985x: I/O error, trying (read)\n");
- return -1;
- }
- dprintk("tda985x: Read 0x%02x\n", buffer);
- return buffer;
-}
-
-static int tda985x_set(struct i2c_client *client)
-{
- struct tda985x *t = client->data;
- unsigned char buf[16];
- d2printk("tda985x: In tda985x_set\n");
-
- if (chip == 9855)
- {
- dprintk(KERN_INFO
- "tda985x: tda985x_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n",
- t->rvol,t->lvol,t->bass,t->treble,t->sub,
- t->c5,t->c6,t->c7,t->a1,t->a2,t->a3);
- buf[0] = TDA9855_VR;
- buf[1] = t->rvol;
- buf[2] = t->lvol;
- buf[3] = t->bass;
- buf[4] = t->treble;
- buf[5] = t->sub;
- buf[6] = t->c5;
- buf[7] = t->c6;
- buf[8] = t->c7;
- buf[9] = t->a1;
- buf[10] = t->a2;
- buf[11] = t->a3;
- if (12 != i2c_master_send(client,buf,12)) {
- printk(KERN_WARNING "tda985x: I/O error, trying tda985x_set\n");
- return -1;
- }
- }
-
- else if (chip == 9850)
- {
- dprintk(KERN_INFO
- "tda986x: tda985x_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n",
- t->c4,t->c5,t->c6,t->c7,t->a1,t->a2,t->a3);
- buf[0] = TDA9850_C4;
- buf[1] = t->c4;
- buf[2] = t->c5;
- buf[3] = t->c6;
- buf[4] = t->c7;
- buf[5] = t->a1;
- buf[6] = t->a2;
- buf[7] = t->a3;
- if (8 != i2c_master_send(client,buf,8)) {
- printk(KERN_WARNING "tda985x: I/O error, trying tda985x_set\n");
- return -1;
- }
- }
-
- return 0;
-}
-
-static void do_tda985x_init(struct i2c_client *client)
-{
- struct tda985x *t = client->data;
- d2printk("tda985x: In tda985x_init\n");
-
- if (chip == 9855)
- {
- printk("tda985x: Using tda9855 options\n");
- t->rvol = 0x6f; /* 0dB */
- t->lvol = 0x6f; /* 0dB */
- t->bass = 0x0e; /* 0dB */
- t->treble = (0x07 << 1); /* 0dB */
- t->sub = 0x8 << 2; /* 0dB */
- t->c5 = TDA9855_MUTE | TDA9855_AVL |
- TDA9855_LOUD | TDA9855_INT;
- /* Set Mute, AVL, Loudness off, Internal sound */
- t->c6 = TDA985x_STEREO | TDA9855_LINEAR |
- TDA9855_TZCM | TDA9855_VZCM;
- /* Stereo linear mode, also wait til zero crossings */
- t->c7 = 0x07; /* 0dB input gain */
- }
-
- else if (chip == 9850)
- {
- printk("tda985x: Using tda9850 options\n");
- t->c4 = 0x08; /* Set stereo noise thresh to nominal */
- t->c5 = 0x08; /* Set SAP noise threshold to nominal */
- t->c6 = TDA985x_STEREO; /* Select Stereo mode for decoder */
- t->c7 = 0x07; /* 0dB input gain */
- }
-
- /* The following is valid for both chip types */
- t->a1 = 0x10; /* Select nominal wideband expander */
- t->a2 = 0x10; /* Select nominal spectral expander and 30mV trigger */
- t->a3 = 0x3; /* Set: nominal timing current, 420ohm AVL attack */
-
- tda985x_set(client);
-}
-
-/* *********************** *
- * i2c interface functions *
- * *********************** */
-
-static int tda985x_attach(struct i2c_adapter *adap, int addr,
- unsigned short flags, int kind)
-{
- struct tda985x *t;
- struct i2c_client *client;
- d2printk("tda985x: In tda985x_attach\n");
- client = kmalloc(sizeof *client,GFP_KERNEL);
- if (!client)
- return -ENOMEM;
- memcpy(client,&client_template,sizeof(struct i2c_client));
- client->adapter = adap;
- client->addr = addr;
-
- client->data = t = kmalloc(sizeof *t,GFP_KERNEL);
- if (!t)
- return -ENOMEM;
- memset(t,0,sizeof *t);
- do_tda985x_init(client);
- MOD_INC_USE_COUNT;
- strcpy(client->name,"TDA985x");
- printk(KERN_INFO "tda985x: init\n");
-
- i2c_attach_client(client);
- return 0;
-}
-
-static int tda985x_probe(struct i2c_adapter *adap)
-{
- if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848))
- return i2c_probe(adap, &addr_data, tda985x_attach);
- return 0;
-}
-
-static int tda985x_detach(struct i2c_client *client)
-{
- struct tda985x *t = client->data;
-
- do_tda985x_init(client);
- i2c_detach_client(client);
-
- kfree(t);
- kfree(client);
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int tda985x_command(struct i2c_client *client,
- unsigned int cmd, void *arg)
-{
- struct tda985x *t = client->data;
- d2printk("tda985x: In tda985x_command\n");
-#if 0
- __u16 *sarg = arg;
-#endif
-
- switch (cmd) {
- /* --- v4l ioctls --- */
- /* take care: bttv does userspace copying, we'll get a
- kernel pointer here... */
- case VIDIOCGAUDIO:
- {
- struct video_audio *va = arg;
- dprintk("tda985x: VIDIOCGAUDIO\n");
- if (chip == 9855)
- {
- int left,right;
-
- va->flags |= VIDEO_AUDIO_VOLUME |
- VIDEO_AUDIO_BASS |
- VIDEO_AUDIO_TREBLE;
-
- /* min is 0x27 max is 0x7f, vstep is 2e8 */
- left = (t->lvol-0x27)*0x2e8;
- right = (t->rvol-0x27)*0x2e8;
- va->volume=MAX(left,right);
- va->balance=(32768*MIN(left,right))/
- (va->volume ? va->volume : 1);
- va->balance=(left<right)?
- (65535-va->balance) : va->balance;
- va->bass = (t->bass-0x6)*0xccc; /* min 0x6 max 0x19 */
- va->treble = ((t->treble>>1)-0x3)*0x1c71;
- }
-
- /* Valid for both chips: */
- {
- va->mode = ((TDA985x_STP | TDA985x_SAPP) &
- tda985x_read(client)) >> 4;
- /* Add mono mode regardless of SAP and stereo */
- /* Allows forced mono */
- va->mode |= VIDEO_SOUND_MONO;
- }
-
- break; /* VIDIOCGAUDIO case */
- }
-
- case VIDIOCSAUDIO:
- {
- struct video_audio *va = arg;
- dprintk("tda985x: VIDEOCSAUDIO\n");
- if (chip == 9855)
- {
- int left,right;
-
- left = (MIN(65536 - va->balance,32768) *
- va->volume) / 32768;
- right = (MIN(va->balance,32768) *
- va->volume) / 32768;
- t->lvol = left/0x2e8+0x27;
- t->rvol = right/0x2e8+0x27;
- t->bass = va->bass/0xccc+0x6;
- t->treble = (va->treble/0x1c71+0x3)<<1;
- tda985x_write(client,TDA9855_VL,t->lvol);
- tda985x_write(client,TDA9855_VR,t->rvol);
- tda985x_write(client,TDA9855_BA, t->bass);
- tda985x_write(client,TDA9855_TR,t->treble);
- }
-
- /* The following is valid for both chips */
-
- switch (va->mode) {
- case VIDEO_SOUND_MONO:
- dprintk("tda985x: VIDEO_SOUND_MONO\n");
- t->c6= TDA985x_MONO | (t->c6 & 0x3f);
- tda985x_write(client,TDA985x_C6,t->c6);
- break;
- case VIDEO_SOUND_STEREO:
- dprintk("tda985x: VIDEO_SOUND_STEREO\n");
- t->c6= TDA985x_STEREO | (t->c6 & 0x3f);
- tda985x_write(client,TDA985x_C6,t->c6);
- break;
- case VIDEO_SOUND_LANG1:
- dprintk("tda985x: VIDEO_SOUND_LANG1\n");
- t->c6= TDA985x_SAP | (t->c6 & 0x3f);
- tda985x_write(client,TDA985x_C6,t->c6);
- break;
- } /* End of (va->mode) switch */
-
- break;
-
- } /* end of VIDEOCSAUDIO case */
-
- default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */
-
- /* nothing */
- d2printk("tda985x: Default\n");
-
- } /* end of (cmd) switch */
-
- return 0;
-}
-
-
-static struct i2c_driver driver = {
- "i2c tda985x driver",
- I2C_DRIVERID_TDA9855, /* Get new one for TDA985x? */
- I2C_DF_NOTIFY,
- tda985x_probe,
- tda985x_detach,
- tda985x_command,
-};
-
-static struct i2c_client client_template =
-{
- "(unset)", /* name */
- -1,
- 0,
- 0,
- NULL,
- &driver
-};
-
-#ifdef MODULE
-int init_module(void)
-#else
-int tda985x_init(void)
-#endif
-{
- if ( (chip != 9850) && (chip != 9855) )
- {
- printk(KERN_ERR "tda985x: chip parameter must be 9850 or 9855\n");
- return -EINVAL;
- }
- i2c_add_driver(&driver);
- return 0;
-}
-
-#ifdef MODULE
-void cleanup_module(void)
-{
- i2c_del_driver(&driver);
-}
-#endif
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
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