patch-2.4.0-test11 linux/drivers/media/video/tvaudio.c
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- Lines: 1108
- Date:
Sun Nov 12 20:47:19 2000
- Orig file:
v2.4.0-test10/linux/drivers/media/video/tvaudio.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.0-test10/linux/drivers/media/video/tvaudio.c linux/drivers/media/video/tvaudio.c
@@ -0,0 +1,1107 @@
+/*
+ * experimental driver for simple i2c audio chips.
+ *
+ * Copyright (c) 2000 Gerd Knorr
+ * based on code by:
+ * Eric Sandeen (eric_sandeen@bigfoot.com)
+ * Steve VanDeBogart (vandebo@uclink.berkeley.edu)
+ * Greg Alexander (galexand@acm.org)
+ *
+ * This code is placed under the terms of the GNU General Public License
+ *
+ * OPTIONS:
+ * debug - set to 1 if you'd like to see debug messages
+ *
+ */
+
+#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 <linux/init.h>
+#include <linux/smp_lock.h>
+
+#include "audiochip.h"
+#include "tvaudio.h"
+#include "id.h"
+
+
+/* ---------------------------------------------------------------------- */
+/* insmod args */
+
+MODULE_PARM(debug,"i");
+static int debug = 0; /* insmod parameter */
+
+#define dprintk if (debug) printk
+
+
+/* ---------------------------------------------------------------------- */
+/* our structs */
+
+#define MAXREGS 64
+
+struct CHIPSTATE;
+typedef int (*getvalue)(int);
+typedef int (*checkit)(struct CHIPSTATE*);
+typedef int (*getmode)(struct CHIPSTATE*);
+typedef void (*setmode)(struct CHIPSTATE*, int mode);
+typedef void (*checkmode)(struct CHIPSTATE*);
+
+/* i2c command */
+typedef struct AUDIOCMD {
+ int count; /* # of bytes to send */
+ unsigned char bytes[MAXREGS+1]; /* addr, data, data, ... */
+} audiocmd;
+
+/* chip description */
+struct CHIPDESC {
+ char *name; /* chip name */
+ int id; /* ID */
+ int addr_lo, addr_hi; /* i2c address range */
+ int registers; /* # of registers */
+
+ int *insmodopt;
+ checkit checkit;
+ int flags;
+#define CHIP_HAS_VOLUME 1
+#define CHIP_HAS_BASSTREBLE 2
+#define CHIP_HAS_INPUTSEL 4
+
+ /* various i2c command sequences */
+ audiocmd init;
+
+ /* which register has which value */
+ int leftreg,rightreg,treblereg,bassreg;
+
+ /* initialize with (defaults to 65535/65535/32768/32768 */
+ int leftinit,rightinit,trebleinit,bassinit;
+
+ /* functions to convert the values (v4l -> chip) */
+ getvalue volfunc,treblefunc,bassfunc;
+
+ /* get/set mode */
+ getmode getmode;
+ setmode setmode;
+
+ /* check / autoswitch audio after channel switches */
+ checkmode checkmode;
+
+ /* input switch register + values for v4l inputs */
+ int inputreg;
+ int inputmap[8];
+ int inputmute;
+};
+static struct CHIPDESC chiplist[];
+
+/* current state of the chip */
+struct CHIPSTATE {
+ struct i2c_client c;
+
+ /* index into CHIPDESC array */
+ int type;
+
+ /* shadow register set */
+ audiocmd shadow;
+
+ /* current settings */
+ __u16 left,right,treble,bass;
+
+ /* thread */
+ struct task_struct *thread;
+ struct semaphore *notify;
+ wait_queue_head_t wq;
+ int wake,done;
+};
+
+
+/* ---------------------------------------------------------------------- */
+/* i2c adresses */
+
+static unsigned short normal_i2c[] = {
+ I2C_TDA8425 >> 1,
+ I2C_TEA6300 >> 1,
+ I2C_TEA6420 >> 1,
+ I2C_TDA9840 >> 1,
+ I2C_TDA985x_L >> 1,
+ I2C_TDA985x_H >> 1,
+ I2C_PIC16C54 >> 1,
+ I2C_CLIENT_END };
+static unsigned short normal_i2c_range[2] = { I2C_CLIENT_END, 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
+};
+
+static struct i2c_driver driver;
+static struct i2c_client client_template;
+
+
+/* ---------------------------------------------------------------------- */
+/* i2c I/O functions */
+
+static int chip_write(struct CHIPSTATE *chip, int subaddr, int val)
+{
+ unsigned char buffer[2];
+
+ if (-1 == subaddr) {
+ dprintk("%s: chip_write: 0x%x\n", chip->c.name, val);
+ chip->shadow.bytes[1] = val;
+ buffer[0] = val;
+ if (1 != i2c_master_send(&chip->c,buffer,1)) {
+ printk(KERN_WARNING "%s: I/O error (write 0x%x)\n",
+ chip->c.name, val);
+ return -1;
+ }
+ } else {
+ dprintk("%s: chip_write: reg%d=0x%x\n", chip->c.name, subaddr, val);
+ chip->shadow.bytes[subaddr+1] = val;
+ buffer[0] = subaddr;
+ buffer[1] = val;
+ if (2 != i2c_master_send(&chip->c,buffer,2)) {
+ printk(KERN_WARNING "%s: I/O error (write reg%d=0x%x)\n",
+ chip->c.name, subaddr, val);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int chip_read(struct CHIPSTATE *chip)
+{
+ unsigned char buffer;
+
+ if (1 != i2c_master_recv(&chip->c,&buffer,1)) {
+ printk(KERN_WARNING "%s: I/O error (read)\n",
+ chip->c.name);
+ return -1;
+ }
+ dprintk("%s: chip_read: 0x%x\n",chip->c.name,buffer);
+ return buffer;
+}
+
+static int chip_read2(struct CHIPSTATE *chip, int subaddr)
+{
+ unsigned char write[1];
+ unsigned char read[1];
+ struct i2c_msg msgs[2] = {
+ { chip->c.addr, 0, 1, write },
+ { chip->c.addr, I2C_M_RD, 1, read }
+ };
+ write[1] = subaddr;
+
+ if (2 != i2c_transfer(chip->c.adapter,msgs,2)) {
+ printk(KERN_WARNING "%s: I/O error (read2)\n",
+ chip->c.name);
+ return -1;
+ }
+ dprintk("%s: chip_read2: reg%d=0x%x\n",
+ chip->c.name,subaddr,read[0]);
+ return read[0];
+}
+
+static int chip_cmd(struct CHIPSTATE *chip, char *name, audiocmd *cmd)
+{
+ int i;
+
+ if (0 == cmd->count)
+ return 0;
+
+ /* update our shadow register set; print bytes if (debug > 0) */
+ dprintk("%s: chip_cmd(%s): reg=%d, data:",
+ chip->c.name,name,cmd->bytes[0]);
+ for (i = 1; i < cmd->count; i++) {
+ dprintk(" 0x%x",cmd->bytes[i]);
+ chip->shadow.bytes[i+cmd->bytes[0]] = cmd->bytes[i];
+ }
+ dprintk("\n");
+
+ /* send data to the chip */
+ if (cmd->count != i2c_master_send(&chip->c,cmd->bytes,cmd->count)) {
+ printk(KERN_WARNING "%s: I/O error (%s)\n", chip->c.name, name);
+ return -1;
+ }
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+/* kernel thread for doing i2c stuff asyncronly
+ * right now it is used only to check the audio mode (mono/stereo/whatever)
+ * some time after switching to another TV channel, then turn on stereo
+ * if available, ...
+ */
+
+static int chip_thread(void *data)
+{
+ struct CHIPSTATE *chip = data;
+ struct CHIPDESC *desc = chiplist + chip->type;
+
+#ifdef CONFIG_SMP
+ lock_kernel();
+#endif
+ daemonize();
+ sigfillset(¤t->blocked);
+ strcpy(current->comm,chip->c.name);
+ chip->thread = current;
+#ifdef CONFIG_SMP
+ unlock_kernel();
+#endif
+
+ dprintk("%s: thread started\n", chip->c.name);
+ if(chip->notify != NULL)
+ up(chip->notify);
+
+ for (;;) {
+ if (chip->done)
+ break;
+ if (!chip->wake) {
+ interruptible_sleep_on(&chip->wq);
+ dprintk("%s: thread wakeup\n", chip->c.name);
+ if (chip->done || signal_pending(current))
+ break;
+ }
+ chip->wake = 0;
+
+ /* wait some time -- let the audio hardware
+ figure the current mode */
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(HZ);
+ if (signal_pending(current))
+ break;
+ if (chip->wake)
+ continue;
+
+ dprintk("%s: thread checkmode\n", chip->c.name);
+ desc->checkmode(chip);
+ }
+
+ chip->thread = NULL;
+ dprintk("%s: thread exiting\n", chip->c.name);
+ if(chip->notify != NULL)
+ up(chip->notify);
+
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - defines+functions for tda9840 */
+
+#define TDA9840_SW 0x00
+#define TDA9840_LVADJ 0x02
+#define TDA9840_STADJ 0x03
+#define TDA9840_TEST 0x04
+
+#define TDA9840_MONO 0x10
+#define TDA9840_STEREO 0x2a
+#define TDA9840_DUALA 0x12
+#define TDA9840_DUALB 0x1e
+#define TDA9840_DUALAB 0x1a
+#define TDA9840_DUALBA 0x16
+#define TDA9840_EXTERNAL 0x7a
+
+int tda9840_getmode(struct CHIPSTATE *chip)
+{
+ return VIDEO_SOUND_MONO | VIDEO_SOUND_STEREO |
+ VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
+}
+
+void tda9840_setmode(struct CHIPSTATE *chip, int mode)
+{
+ int update = 1;
+ int t = chip->shadow.bytes[TDA9840_SW + 1] & ~0x7e;
+
+ switch (mode) {
+ case VIDEO_SOUND_MONO:
+ t |= TDA9840_MONO;
+ break;
+ case VIDEO_SOUND_STEREO:
+ t |= TDA9840_STEREO;
+ break;
+ case VIDEO_SOUND_LANG1:
+ t |= TDA9840_DUALA;
+ break;
+ case VIDEO_SOUND_LANG2:
+ t |= TDA9840_DUALB;
+ break;
+ default:
+ update = 0;
+ }
+
+ if (update)
+ chip_write(chip, TDA9840_SW, t);
+}
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - defines+functions for tda985x */
+
+/* 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 */
+
+int tda9855_volume(int val) { return val/0x2e8+0x27; }
+int tda9855_bass(int val) { return val/0xccc+0x06; }
+int tda9855_treble(int val) { return (val/0x1c71+0x3)<<1; }
+
+int tda985x_getmode(struct CHIPSTATE *chip)
+{
+ int mode;
+
+ mode = ((TDA985x_STP | TDA985x_SAPP) &
+ chip_read(chip)) >> 4;
+ /* Add mono mode regardless of SAP and stereo */
+ /* Allows forced mono */
+ return mode | VIDEO_SOUND_MONO;
+}
+
+void tda985x_setmode(struct CHIPSTATE *chip, int mode)
+{
+ int update = 1;
+ int c6 = chip->shadow.bytes[TDA985x_C6+1] & 0x3f;
+
+ switch (mode) {
+ case VIDEO_SOUND_MONO:
+ c6 |= TDA985x_MONO;
+ break;
+ case VIDEO_SOUND_STEREO:
+ c6 |= TDA985x_STEREO;
+ break;
+ case VIDEO_SOUND_LANG1:
+ c6 |= TDA985x_SAP;
+ break;
+ default:
+ update = 0;
+ }
+ if (update)
+ chip_write(chip,TDA985x_C6,c6);
+}
+
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - defines+functions for tda9873h */
+
+/* Subaddresses for TDA9873H */
+
+#define TDA9873_SW 0x00 /* Switching */
+#define TDA9873_AD 0x01 /* Adjust */
+#define TDA9873_PT 0x02 /* Port */
+
+/* Subaddress 0x00: Switching Data
+ * B7..B0:
+ *
+ * B1, B0: Input source selection
+ * 0, 0 internal
+ * 1, 0 external stereo
+ * 0, 1 external mono
+ */
+#define TDA9873_INTERNAL 0
+#define TDA9873_EXT_STEREO 2
+#define TDA9873_EXT_MONO 1
+
+/* B3, B2: output signal select
+ * B4 : transmission mode
+ * 0, 0, 1 Mono
+ * 1, 0, 0 Stereo
+ * 1, 1, 1 Stereo (reversed channel)
+ * 0, 0, 0 Dual AB
+ * 0, 0, 1 Dual AA
+ * 0, 1, 0 Dual BB
+ * 0, 1, 1 Dual BA
+ */
+
+#define TDA9873_TR_MONO 4
+#define TDA9873_TR_STEREO 1 << 4
+#define TDA9873_TR_REVERSE (1 << 3) & (1 << 2)
+#define TDA9873_TR_DUALA 1 << 2
+#define TDA9873_TR_DUALB 1 << 3
+
+/* output level controls
+ * B5: output level switch (0 = reduced gain, 1 = normal gain)
+ * B6: mute (1 = muted)
+ * B7: auto-mute (1 = auto-mute enabled)
+ */
+
+#define TDA9873_GAIN_NORMAL 1 << 5
+#define TDA9873_MUTE 1 << 6
+#define TDA9873_AUTOMUTE 1 << 7
+
+/* Subaddress 0x01: Adjust/standard */
+
+/* Lower 4 bits (C3..C0) control stereo adjustment on R channel (-0.6 - +0.7 dB)
+ * Recommended value is +0 dB
+ */
+
+#define TDA9873_STEREO_ADJ 0x06 /* 0dB gain */
+
+/* Bits C6..C4 control FM stantard
+ * C6, C5, C4
+ * 0, 0, 0 B/G (PAL FM)
+ * 0, 0, 1 M
+ * 0, 1, 0 D/K(1)
+ * 0, 1, 1 D/K(2)
+ * 1, 0, 0 D/K(3)
+ * 1, 0, 1 I
+ */
+#define TDA9873_BG 0
+#define TDA9873_M 1
+#define TDA9873_DK1 2
+#define TDA9873_DK2 3
+#define TDA9873_DK3 4
+#define TDA9873_I 5
+
+/* C7 controls identification response time (1=fast/0=normal)
+ */
+#define TDA9873_IDR_NORM 0
+#define TDA9873_IDR_FAST 1 << 7
+
+
+/* Subaddress 0x02: Port data */
+
+/* E1, E0 free programmable ports P1/P2
+ 0, 0 both ports low
+ 0, 1 P1 high
+ 1, 0 P2 high
+ 1, 1 both ports high
+*/
+
+#define TDA9873_PORTS 3
+
+/* E2: test port */
+#define TDA9873_TST_PORT 1 << 2
+
+/* E5..E3 control mono output channel (together with transmission mode bit B4)
+ *
+ * E5 E4 E3 B4 OUTM
+ * 0 0 0 0 mono
+ * 0 0 1 0 DUAL B
+ * 0 1 0 1 mono (from stereo decoder)
+ */
+#define TDA9873_MOUT_MONO 0
+#define TDA9873_MOUT_FMONO 0
+#define TDA9873_MOUT_DUALA 0
+#define TDA9873_MOUT_DUALB 1 << 3
+#define TDA9873_MOUT_ST 1 << 4
+#define TDA9873_MOUT_EXTM (1 << 4 ) & (1 << 3)
+#define TDA9873_MOUT_EXTL 1 << 5
+#define TDA9873_MOUT_EXTR (1 << 5 ) & (1 << 3)
+#define TDA9873_MOUT_EXTLR (1 << 5 ) & (1 << 4)
+#define TDA9873_MOUT_MUTE (1 << 5 ) & (1 << 4) & (1 << 3)
+
+/* Status bits: (chip read) */
+#define TDA9873_PONR 0 /* Power-on reset detected if = 1 */
+#define TDA9873_STEREO 2 /* Stereo sound is identified */
+#define TDA9873_DUAL 4 /* Dual sound is identified */
+
+int tda9873_getmode(struct CHIPSTATE *chip)
+{
+ int val,mode;
+
+ val = chip_read(chip);
+ mode = VIDEO_SOUND_MONO;
+ if (val & TDA9873_STEREO)
+ mode |= VIDEO_SOUND_STEREO;
+ if (val & TDA9873_DUAL)
+ mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
+ dprintk ("tda9873_getmode(): raw chip read: %d, return: %d\n",
+ val, mode);
+ return mode;
+}
+
+void tda9873_setmode(struct CHIPSTATE *chip, int mode)
+{
+ int sw_data = chip->shadow.bytes[TDA9873_SW+1] & 0xe3;
+ /* int adj_data = chip->shadow.bytes[TDA9873_AD+1] ; */
+ dprintk("tda9873_setmode(): chip->shadow.bytes[%d] = %d\n", TDA9873_SW+1, chip->shadow.bytes[TDA9873_SW+1]);
+ dprintk("tda9873_setmode(): sw_data = %d\n", sw_data);
+
+ switch (mode) {
+ case VIDEO_SOUND_MONO:
+ sw_data |= TDA9873_TR_MONO;
+ break;
+ case VIDEO_SOUND_STEREO:
+ sw_data |= TDA9873_TR_STEREO;
+ break;
+ case VIDEO_SOUND_LANG1:
+ sw_data |= TDA9873_TR_DUALA;
+ break;
+ case VIDEO_SOUND_LANG2:
+ sw_data |= TDA9873_TR_DUALB;
+ break;
+ }
+ dprintk("tda9873_setmode(): req. mode %d; chip_write: %d\n", mode, sw_data);
+ chip_write(chip,TDA9873_SW,sw_data);
+}
+
+void tda9873_checkmode(struct CHIPSTATE *chip)
+{
+ int mode = tda9873_getmode(chip);
+
+ if (mode & VIDEO_SOUND_STEREO)
+ tda9873_setmode(chip,VIDEO_SOUND_STEREO);
+ if (mode & VIDEO_SOUND_LANG1)
+ tda9873_setmode(chip,VIDEO_SOUND_LANG1);
+}
+
+int tda9873_checkit(struct CHIPSTATE *chip)
+{
+ int rc;
+
+ if (-1 == (rc = chip_read2(chip,254)))
+ return 0;
+ return (rc & ~0x1f) == 0x80;
+}
+
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - defines+functions for tea6420 */
+
+#define TEA6300_VL 0x00 /* volume left */
+#define TEA6300_VR 0x01 /* volume right */
+#define TEA6300_BA 0x02 /* bass */
+#define TEA6300_TR 0x03 /* treble */
+#define TEA6300_FA 0x04 /* fader control */
+#define TEA6300_S 0x05 /* switch register */
+ /* values for those registers: */
+#define TEA6300_S_SA 0x01 /* stereo A input */
+#define TEA6300_S_SB 0x02 /* stereo B */
+#define TEA6300_S_SC 0x04 /* stereo C */
+#define TEA6300_S_GMU 0x80 /* general mute */
+
+#define TEA6420_S_SA 0x00 /* stereo A input */
+#define TEA6420_S_SB 0x01 /* stereo B */
+#define TEA6420_S_SC 0x02 /* stereo C */
+#define TEA6420_S_SD 0x03 /* stereo D */
+#define TEA6420_S_SE 0x04 /* stereo E */
+#define TEA6420_S_GMU 0x05 /* general mute */
+
+int tea6300_shift10(int val) { return val >> 10; }
+int tea6300_shift12(int val) { return val >> 12; }
+
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - defines+functions for tda8425 */
+
+#define TDA8425_VL 0x00 /* volume left */
+#define TDA8425_VR 0x01 /* volume right */
+#define TDA8425_BA 0x02 /* bass */
+#define TDA8425_TR 0x03 /* treble */
+#define TDA8425_S1 0x08 /* switch functions */
+ /* values for those registers: */
+#define TDA8425_S1_OFF 0xEE /* audio off (mute on) */
+#define TDA8425_S1_ON 0xCE /* audio on (mute off) - "linear stereo" mode */
+
+int tda8425_shift10(int val) { return val >> 10 | 0xc0; }
+int tda8425_shift12(int val) { return val >> 12 | 0xf0; }
+
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - defines+functions for pic16c54 (PV951) */
+
+/* the registers of 16C54, I2C sub address. */
+#define PIC16C54_REG_KEY_CODE 0x01 /* Not use. */
+#define PIC16C54_REG_MISC 0x02
+
+/* bit definition of the RESET register, I2C data. */
+#define PIC16C54_MISC_RESET_REMOTE_CTL 0x01 /* bit 0, Reset to receive the key */
+ /* code of remote controller */
+#define PIC16C54_MISC_MTS_MAIN 0x02 /* bit 1 */
+#define PIC16C54_MISC_MTS_SAP 0x04 /* bit 2 */
+#define PIC16C54_MISC_MTS_BOTH 0x08 /* bit 3 */
+#define PIC16C54_MISC_SND_MUTE 0x10 /* bit 4, Mute Audio(Line-in and Tuner) */
+#define PIC16C54_MISC_SND_NOTMUTE 0x20 /* bit 5 */
+#define PIC16C54_MISC_SWITCH_TUNER 0x40 /* bit 6 , Switch to Line-in */
+#define PIC16C54_MISC_SWITCH_LINE 0x80 /* bit 7 , Switch to Tuner */
+
+
+/* ---------------------------------------------------------------------- */
+/* audio chip descriptions - struct CHIPDESC */
+
+/* insmod options to enable/disable individual audio chips */
+int tda8425 = 1;
+int tda9840 = 1;
+int tda9850 = 1;
+int tda9855 = 1;
+int tda9873 = 1;
+int tea6300 = 0;
+int tea6420 = 1;
+int pic16c54 = 1;
+MODULE_PARM(tda8425,"i");
+MODULE_PARM(tda9840,"i");
+MODULE_PARM(tda9850,"i");
+MODULE_PARM(tda9855,"i");
+MODULE_PARM(tda9873,"i");
+MODULE_PARM(tea6300,"i");
+MODULE_PARM(tea6420,"i");
+MODULE_PARM(pic16c54,"i");
+
+static struct CHIPDESC chiplist[] = {
+ {
+ name: "tda9840",
+ id: I2C_DRIVERID_TDA9840,
+ insmodopt: &tda9840,
+ addr_lo: I2C_TDA9840 >> 1,
+ addr_hi: I2C_TDA9840 >> 1,
+ registers: 5,
+
+ getmode: tda9840_getmode,
+ setmode: tda9840_setmode,
+
+ init: { 2, { TDA9840_SW, 0x2a } }
+ },
+ {
+ name: "tda9873h",
+ id: I2C_DRIVERID_TDA9873,
+ checkit: tda9873_checkit,
+ insmodopt: &tda9873,
+ addr_lo: I2C_TDA985x_L >> 1,
+ addr_hi: I2C_TDA985x_H >> 1,
+ registers: 3,
+
+ getmode: tda9873_getmode,
+ setmode: tda9873_setmode,
+ checkmode: tda9873_checkmode,
+
+ init: { 4, { TDA9873_SW, 0xa0, 0x06, 0x03 } }
+ },
+ {
+ name: "tda9850",
+ id: I2C_DRIVERID_TDA9850,
+ insmodopt: &tda9850,
+ addr_lo: I2C_TDA985x_L >> 1,
+ addr_hi: I2C_TDA985x_H >> 1,
+ registers: 11,
+
+ getmode: tda985x_getmode,
+ setmode: tda985x_setmode,
+
+ init: { 8, { TDA9850_C4, 0x08, 0x08, TDA985x_STEREO, 0x07, 0x10, 0x10, 0x03 } }
+ },
+ {
+ name: "tda9855",
+ id: I2C_DRIVERID_TDA9855,
+ insmodopt: &tda9855,
+ addr_lo: I2C_TDA985x_L >> 1,
+ addr_hi: I2C_TDA985x_H >> 1,
+ registers: 11,
+ flags: CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE,
+
+ leftreg: TDA9855_VR,
+ rightreg: TDA9855_VL,
+ bassreg: TDA9855_BA,
+ treblereg: TDA9855_TR,
+ volfunc: tda9855_volume,
+ bassfunc: tda9855_bass,
+ treblefunc: tda9855_treble,
+
+ getmode: tda985x_getmode,
+ setmode: tda985x_setmode,
+
+ init: { 12, { 0, 0x6f, 0x6f, 0x0e, 0x07<<1, 0x8<<2,
+ TDA9855_MUTE | TDA9855_AVL | TDA9855_LOUD | TDA9855_INT,
+ TDA985x_STEREO | TDA9855_LINEAR | TDA9855_TZCM | TDA9855_VZCM,
+ 0x07, 0x10, 0x10, 0x03 }}
+ },
+ {
+ name: "tea6300",
+ id: I2C_DRIVERID_TEA6300,
+ insmodopt: &tea6300,
+ addr_lo: I2C_TEA6300 >> 1,
+ addr_hi: I2C_TEA6300 >> 1,
+ registers: 6,
+ flags: CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL,
+
+ leftreg: TEA6300_VR,
+ rightreg: TEA6300_VL,
+ bassreg: TEA6300_BA,
+ treblereg: TEA6300_TR,
+ volfunc: tea6300_shift10,
+ bassfunc: tea6300_shift12,
+ treblefunc: tea6300_shift12,
+
+ inputreg: TEA6300_S,
+ inputmap: { TEA6300_S_SA, TEA6300_S_SB, TEA6300_S_SC },
+ inputmute: TEA6300_S_GMU,
+ },
+ {
+ name: "tea6420",
+ id: I2C_DRIVERID_TEA6420,
+ insmodopt: &tea6420,
+ addr_lo: I2C_TEA6420 >> 1,
+ addr_hi: I2C_TEA6420 >> 1,
+ registers: 1,
+ flags: CHIP_HAS_INPUTSEL,
+
+ inputreg: -1,
+ inputmap: { TEA6420_S_SA, TEA6420_S_SB, TEA6420_S_SC },
+ inputmute: TEA6300_S_GMU,
+ },
+ {
+ name: "tda8425",
+ id: I2C_DRIVERID_TDA8425,
+ insmodopt: &tda8425,
+ addr_lo: I2C_TDA8425 >> 1,
+ addr_hi: I2C_TDA8425 >> 1,
+ registers: 9,
+ flags: CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL,
+
+ leftreg: TDA8425_VR,
+ rightreg: TDA8425_VL,
+ bassreg: TDA8425_BA,
+ treblereg: TDA8425_TR,
+ volfunc: tda8425_shift10,
+ bassfunc: tda8425_shift12,
+ treblefunc: tda8425_shift12,
+
+ inputreg: TDA8425_S1,
+ inputmap: { TDA8425_S1_ON, TDA8425_S1_ON, TDA8425_S1_ON },
+ inputmute: TDA8425_S1_OFF,
+ },
+ {
+ name: "pic16c54 (PV951)",
+ id: I2C_DRIVERID_PIC16C54_PV951,
+ insmodopt: &pic16c54,
+ addr_lo: I2C_PIC16C54 >> 1,
+ addr_hi: I2C_PIC16C54>> 1,
+ registers: 2,
+ flags: CHIP_HAS_INPUTSEL,
+
+ inputreg: PIC16C54_REG_MISC,
+ inputmap: {PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_TUNER,
+ PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_LINE},
+ inputmute: PIC16C54_MISC_SND_MUTE,
+ },
+ { name: NULL } /* EOF */
+};
+
+
+/* ---------------------------------------------------------------------- */
+/* i2c registration */
+
+static int chip_attach(struct i2c_adapter *adap, int addr,
+ unsigned short flags, int kind)
+{
+ struct CHIPSTATE *chip;
+ struct CHIPDESC *desc;
+
+ chip = kmalloc(sizeof(*chip),GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+ memset(chip,0,sizeof(*chip));
+ memcpy(&chip->c,&client_template,sizeof(struct i2c_client));
+ chip->c.adapter = adap;
+ chip->c.addr = addr;
+ chip->c.data = chip;
+
+ /* find description for the chip */
+ dprintk("tvaudio: chip @ addr=0x%x\n",addr<<1);
+ for (desc = chiplist; desc->name != NULL; desc++) {
+ if (0 == *(desc->insmodopt))
+ continue;
+ if (addr < desc->addr_lo ||
+ addr > desc->addr_hi)
+ continue;
+ if (desc->checkit && !desc->checkit(chip))
+ continue;
+ break;
+ }
+ if (desc->name == NULL) {
+ dprintk("tvaudio: no matching chip description found\n");
+ return -EIO;
+ }
+ dprintk("tvaudio: %s matches:%s%s%s\n",desc->name,
+ (desc->flags & CHIP_HAS_VOLUME) ? " volume" : "",
+ (desc->flags & CHIP_HAS_BASSTREBLE) ? " bass/treble" : "",
+ (desc->flags & CHIP_HAS_INPUTSEL) ? " audiomux" : "");
+
+ /* fill required data structures */
+ strcpy(chip->c.name,desc->name);
+ chip->type = desc-chiplist;
+ chip->shadow.count = desc->registers+1;
+
+ /* register */
+ MOD_INC_USE_COUNT;
+ i2c_attach_client(&chip->c);
+
+ /* initialization */
+ chip_cmd(chip,"init",&desc->init);
+ if (desc->flags & CHIP_HAS_VOLUME) {
+ chip->left = desc->leftinit ? desc->leftinit : 65536;
+ chip->right = desc->rightinit ? desc->rightinit : 65536;
+ chip_write(chip,desc->leftreg,desc->volfunc(chip->left));
+ chip_write(chip,desc->rightreg,desc->volfunc(chip->right));
+ }
+ if (desc->flags & CHIP_HAS_BASSTREBLE) {
+ chip->treble = desc->trebleinit ? desc->trebleinit : 32768;
+ chip->bass = desc->bassinit ? desc->bassinit : 32768;
+ chip_write(chip,desc->bassreg,desc->bassfunc(chip->bass));
+ chip_write(chip,desc->treblereg,desc->treblefunc(chip->treble));
+ }
+
+ if (desc->checkmode) {
+ /* start async thread */
+ DECLARE_MUTEX_LOCKED(sem);
+ chip->notify = &sem;
+ init_waitqueue_head(&chip->wq);
+ kernel_thread(chip_thread,(void *)chip,0);
+ down(&sem);
+ chip->notify = NULL;
+ chip->wake++;
+ wake_up_interruptible(&chip->wq);
+ }
+ return 0;
+}
+
+static int chip_probe(struct i2c_adapter *adap)
+{
+ if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848))
+ return i2c_probe(adap, &addr_data, chip_attach);
+ return 0;
+}
+
+static int chip_detach(struct i2c_client *client)
+{
+ struct CHIPSTATE *chip = client->data;
+
+ if (NULL != chip->thread) {
+ /* shutdown async thread */
+ DECLARE_MUTEX_LOCKED(sem);
+ chip->notify = &sem;
+ chip->done = 1;
+ wake_up_interruptible(&chip->wq);
+ down(&sem);
+ chip->notify = NULL;
+ }
+
+ i2c_detach_client(&chip->c);
+ kfree(chip);
+ MOD_DEC_USE_COUNT;
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+/* video4linux interface */
+
+static int chip_command(struct i2c_client *client,
+ unsigned int cmd, void *arg)
+{
+ __u16 *sarg = arg;
+ struct CHIPSTATE *chip = client->data;
+ struct CHIPDESC *desc = chiplist + chip->type;
+
+ dprintk("%s: chip_command 0x%x\n",chip->c.name,cmd);
+
+ switch (cmd) {
+ case AUDC_SET_INPUT:
+ if (desc->flags & CHIP_HAS_INPUTSEL) {
+ if (*sarg & 0x80)
+ chip_write(chip,desc->inputreg,desc->inputmute);
+ else
+ chip_write(chip,desc->inputreg,desc->inputmap[*sarg]);
+ }
+ break;
+ /* --- v4l ioctls --- */
+ /* take care: bttv does userspace copying, we'll get a
+ kernel pointer here... */
+ case VIDIOCGAUDIO:
+ {
+ struct video_audio *va = arg;
+
+ if (desc->flags & CHIP_HAS_VOLUME) {
+ va->flags |= VIDEO_AUDIO_VOLUME;
+ va->volume = MAX(chip->left,chip->right);
+ va->balance = (32768*MIN(chip->left,chip->right))/
+ (va->volume ? va->volume : 1);
+ }
+ if (desc->flags & CHIP_HAS_BASSTREBLE) {
+ va->flags |= VIDEO_AUDIO_BASS | VIDEO_AUDIO_TREBLE;
+ va->bass = chip->bass;
+ va->treble = chip->treble;
+ }
+ if (desc->getmode)
+ va->mode = desc->getmode(chip);
+ else
+ va->mode = VIDEO_SOUND_MONO;
+ break;
+ }
+
+ case VIDIOCSAUDIO:
+ {
+ struct video_audio *va = arg;
+
+ if (desc->flags & CHIP_HAS_VOLUME) {
+ chip->left = (MIN(65536 - va->balance,32768) *
+ va->volume) / 32768;
+ chip->right = (MIN(va->balance,32768) *
+ va->volume) / 32768;
+ chip_write(chip,desc->leftreg,desc->volfunc(chip->left));
+ chip_write(chip,desc->rightreg,desc->volfunc(chip->right));
+ }
+ if (desc->flags & CHIP_HAS_BASSTREBLE) {
+ chip->bass = va->bass;
+ chip->treble = va->treble;
+ chip_write(chip,desc->bassreg,desc->bassfunc(chip->bass));
+ chip_write(chip,desc->treblereg,desc->treblefunc(chip->treble));
+ }
+ if (desc->setmode && va->mode)
+ desc->setmode(chip,va->mode);
+ break;
+ }
+ case VIDIOCSFREQ:
+ {
+ if (desc->checkmode) {
+ desc->setmode(chip,VIDEO_SOUND_MONO);
+ chip->wake++;
+ wake_up_interruptible(&chip->wq);
+ /* the thread will call checkmode() a second later */
+ }
+ }
+ }
+ return 0;
+}
+
+
+static struct i2c_driver driver = {
+ name: "generic i2c audio driver",
+ id: I2C_DRIVERID_TVAUDIO, /* FIXME */
+ flags: I2C_DF_NOTIFY,
+ attach_adapter: chip_probe,
+ detach_client: chip_detach,
+ command: chip_command,
+};
+
+static struct i2c_client client_template =
+{
+ name: "(unset)",
+ driver: &driver,
+};
+
+int audiochip_init_module(void)
+{
+ struct CHIPDESC *desc;
+ printk(KERN_INFO "tvaudio: TV audio decoder + audio/video mux driver\n");
+ printk(KERN_INFO "tvaudio: known chips: ");
+ for (desc = chiplist; desc->name != NULL; desc++)
+ printk("%s%s", (desc == chiplist) ? "" : ",",desc->name);
+ printk("\n");
+ i2c_add_driver(&driver);
+ return 0;
+}
+
+void audiochip_cleanup_module(void)
+{
+ i2c_del_driver(&driver);
+}
+
+module_init(audiochip_init_module);
+module_exit(audiochip_cleanup_module);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)