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linux-stable/drivers/media/i2c/tvaudio.c
Mauro Carvalho Chehab b0121ca038 media: tvaudio: improve error handling 
The error handling logic at tvaudio is broken on several ways,
as it doesn't really check right when an error occurs.

Change it to return the proper error code from read/write
routines and fix the errors on reads.

Shuts up the following warnings:
	drivers/media/i2c/tvaudio.c:222 chip_read() error: uninitialized symbol 'buffer'.
	drivers/media/i2c/tvaudio.c:223 chip_read() error: uninitialized symbol 'buffer'.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-23 06:54:32 -04:00

2103 lines
62 KiB
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/*
* 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)
*
* For the TDA9875 part:
* Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source
* and Eric Sandeen
*
* Copyright(c) 2005-2008 Mauro Carvalho Chehab
* - Some cleanups, code fixes, etc
* - Convert it to V4L2 API
*
* 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/slab.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <media/i2c/tvaudio.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
/* ---------------------------------------------------------------------- */
/* insmod args */
static int debug; /* insmod parameter */
module_param(debug, int, 0644);
MODULE_DESCRIPTION("device driver for various i2c TV sound decoder / audiomux chips");
MODULE_AUTHOR("Eric Sandeen, Steve VanDeBogart, Greg Alexander, Gerd Knorr");
MODULE_LICENSE("GPL");
#define UNSET (-1U)
/* ---------------------------------------------------------------------- */
/* our structs */
#define MAXREGS 256
struct CHIPSTATE;
typedef int (*getvalue)(int);
typedef int (*checkit)(struct CHIPSTATE*);
typedef int (*initialize)(struct CHIPSTATE*);
typedef int (*getrxsubchans)(struct CHIPSTATE *);
typedef void (*setaudmode)(struct CHIPSTATE*, int mode);
/* 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 addr_lo, addr_hi; /* i2c address range */
int registers; /* # of registers */
int *insmodopt;
checkit checkit;
initialize initialize;
int flags;
#define CHIP_HAS_VOLUME 1
#define CHIP_HAS_BASSTREBLE 2
#define CHIP_HAS_INPUTSEL 4
#define CHIP_NEED_CHECKMODE 8
/* various i2c command sequences */
audiocmd init;
/* which register has which value */
int leftreg, rightreg, treblereg, bassreg;
/* initialize with (defaults to 65535/32768/32768 */
int volinit, trebleinit, bassinit;
/* functions to convert the values (v4l -> chip) */
getvalue volfunc, treblefunc, bassfunc;
/* get/set mode */
getrxsubchans getrxsubchans;
setaudmode setaudmode;
/* input switch register + values for v4l inputs */
int inputreg;
int inputmap[4];
int inputmute;
int inputmask;
};
/* current state of the chip */
struct CHIPSTATE {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
struct {
/* volume/balance cluster */
struct v4l2_ctrl *volume;
struct v4l2_ctrl *balance;
};
/* chip-specific description - should point to
an entry at CHIPDESC table */
struct CHIPDESC *desc;
/* shadow register set */
audiocmd shadow;
/* current settings */
u16 muted;
int prevmode;
int radio;
int input;
/* thread */
struct task_struct *thread;
struct timer_list wt;
int audmode;
};
static inline struct CHIPSTATE *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct CHIPSTATE, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct CHIPSTATE, hdl)->sd;
}
/* ---------------------------------------------------------------------- */
/* i2c I/O functions */
static int chip_write(struct CHIPSTATE *chip, int subaddr, int val)
{
struct v4l2_subdev *sd = &chip->sd;
struct i2c_client *c = v4l2_get_subdevdata(sd);
unsigned char buffer[2];
int rc;
if (subaddr < 0) {
v4l2_dbg(1, debug, sd, "chip_write: 0x%x\n", val);
chip->shadow.bytes[1] = val;
buffer[0] = val;
rc = i2c_master_send(c, buffer, 1);
if (rc != 1) {
v4l2_warn(sd, "I/O error (write 0x%x)\n", val);
if (rc < 0)
return rc;
return -EIO;
}
} else {
if (subaddr + 1 >= ARRAY_SIZE(chip->shadow.bytes)) {
v4l2_info(sd,
"Tried to access a non-existent register: %d\n",
subaddr);
return -EINVAL;
}
v4l2_dbg(1, debug, sd, "chip_write: reg%d=0x%x\n",
subaddr, val);
chip->shadow.bytes[subaddr+1] = val;
buffer[0] = subaddr;
buffer[1] = val;
rc = i2c_master_send(c, buffer, 2);
if (rc != 2) {
v4l2_warn(sd, "I/O error (write reg%d=0x%x)\n",
subaddr, val);
if (rc < 0)
return rc;
return -EIO;
}
}
return 0;
}
static int chip_write_masked(struct CHIPSTATE *chip,
int subaddr, int val, int mask)
{
struct v4l2_subdev *sd = &chip->sd;
if (mask != 0) {
if (subaddr < 0) {
val = (chip->shadow.bytes[1] & ~mask) | (val & mask);
} else {
if (subaddr + 1 >= ARRAY_SIZE(chip->shadow.bytes)) {
v4l2_info(sd,
"Tried to access a non-existent register: %d\n",
subaddr);
return -EINVAL;
}
val = (chip->shadow.bytes[subaddr+1] & ~mask) | (val & mask);
}
}
return chip_write(chip, subaddr, val);
}
static int chip_read(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
struct i2c_client *c = v4l2_get_subdevdata(sd);
unsigned char buffer;
int rc;
rc = i2c_master_recv(c, &buffer, 1);
if (rc != 1) {
v4l2_warn(sd, "I/O error (read)\n");
if (rc < 0)
return rc;
return -EIO;
}
v4l2_dbg(1, debug, sd, "chip_read: 0x%x\n", buffer);
return buffer;
}
static int chip_read2(struct CHIPSTATE *chip, int subaddr)
{
struct v4l2_subdev *sd = &chip->sd;
struct i2c_client *c = v4l2_get_subdevdata(sd);
int rc;
unsigned char write[1];
unsigned char read[1];
struct i2c_msg msgs[2] = {
{
.addr = c->addr,
.len = 1,
.buf = write
},
{
.addr = c->addr,
.flags = I2C_M_RD,
.len = 1,
.buf = read
}
};
write[0] = subaddr;
rc = i2c_transfer(c->adapter, msgs, 2);
if (rc != 2) {
v4l2_warn(sd, "I/O error (read2)\n");
if (rc < 0)
return rc;
return -EIO;
}
v4l2_dbg(1, debug, sd, "chip_read2: reg%d=0x%x\n",
subaddr, read[0]);
return read[0];
}
static int chip_cmd(struct CHIPSTATE *chip, char *name, audiocmd *cmd)
{
struct v4l2_subdev *sd = &chip->sd;
struct i2c_client *c = v4l2_get_subdevdata(sd);
int i, rc;
if (0 == cmd->count)
return 0;
if (cmd->count + cmd->bytes[0] - 1 >= ARRAY_SIZE(chip->shadow.bytes)) {
v4l2_info(sd,
"Tried to access a non-existent register range: %d to %d\n",
cmd->bytes[0] + 1, cmd->bytes[0] + cmd->count - 1);
return -EINVAL;
}
/* FIXME: it seems that the shadow bytes are wrong below !*/
/* update our shadow register set; print bytes if (debug > 0) */
v4l2_dbg(1, debug, sd, "chip_cmd(%s): reg=%d, data:",
name, cmd->bytes[0]);
for (i = 1; i < cmd->count; i++) {
if (debug)
printk(KERN_CONT " 0x%x", cmd->bytes[i]);
chip->shadow.bytes[i+cmd->bytes[0]] = cmd->bytes[i];
}
if (debug)
printk(KERN_CONT "\n");
/* send data to the chip */
rc = i2c_master_send(c, cmd->bytes, cmd->count);
if (rc != cmd->count) {
v4l2_warn(sd, "I/O error (%s)\n", name);
if (rc < 0)
return rc;
return -EIO;
}
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 void chip_thread_wake(struct timer_list *t)
{
struct CHIPSTATE *chip = from_timer(chip, t, wt);
wake_up_process(chip->thread);
}
static int chip_thread(void *data)
{
struct CHIPSTATE *chip = data;
struct CHIPDESC *desc = chip->desc;
struct v4l2_subdev *sd = &chip->sd;
int mode, selected;
v4l2_dbg(1, debug, sd, "thread started\n");
set_freezable();
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (!kthread_should_stop())
schedule();
set_current_state(TASK_RUNNING);
try_to_freeze();
if (kthread_should_stop())
break;
v4l2_dbg(1, debug, sd, "thread wakeup\n");
/* don't do anything for radio */
if (chip->radio)
continue;
/* have a look what's going on */
mode = desc->getrxsubchans(chip);
if (mode == chip->prevmode)
continue;
/* chip detected a new audio mode - set it */
v4l2_dbg(1, debug, sd, "thread checkmode\n");
chip->prevmode = mode;
selected = V4L2_TUNER_MODE_MONO;
switch (chip->audmode) {
case V4L2_TUNER_MODE_MONO:
if (mode & V4L2_TUNER_SUB_LANG1)
selected = V4L2_TUNER_MODE_LANG1;
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1:
if (mode & V4L2_TUNER_SUB_LANG1)
selected = V4L2_TUNER_MODE_LANG1;
else if (mode & V4L2_TUNER_SUB_STEREO)
selected = V4L2_TUNER_MODE_STEREO;
break;
case V4L2_TUNER_MODE_LANG2:
if (mode & V4L2_TUNER_SUB_LANG2)
selected = V4L2_TUNER_MODE_LANG2;
else if (mode & V4L2_TUNER_SUB_STEREO)
selected = V4L2_TUNER_MODE_STEREO;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
if (mode & V4L2_TUNER_SUB_LANG2)
selected = V4L2_TUNER_MODE_LANG1_LANG2;
else if (mode & V4L2_TUNER_SUB_STEREO)
selected = V4L2_TUNER_MODE_STEREO;
}
desc->setaudmode(chip, selected);
/* schedule next check */
mod_timer(&chip->wt, jiffies+msecs_to_jiffies(2000));
}
v4l2_dbg(1, debug, sd, "thread exiting\n");
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
#define TDA9840_DS_DUAL 0x20 /* Dual sound identified */
#define TDA9840_ST_STEREO 0x40 /* Stereo sound identified */
#define TDA9840_PONRES 0x80 /* Power-on reset detected if = 1 */
#define TDA9840_TEST_INT1SN 0x1 /* Integration time 0.5s when set */
#define TDA9840_TEST_INTFU 0x02 /* Disables integrator function */
static int tda9840_getrxsubchans(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
int val, mode;
mode = V4L2_TUNER_SUB_MONO;
val = chip_read(chip);
if (val < 0)
return mode;
if (val & TDA9840_DS_DUAL)
mode |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
if (val & TDA9840_ST_STEREO)
mode = V4L2_TUNER_SUB_STEREO;
v4l2_dbg(1, debug, sd,
"tda9840_getrxsubchans(): raw chip read: %d, return: %d\n",
val, mode);
return mode;
}
static void tda9840_setaudmode(struct CHIPSTATE *chip, int mode)
{
int update = 1;
int t = chip->shadow.bytes[TDA9840_SW + 1] & ~0x7e;
switch (mode) {
case V4L2_TUNER_MODE_MONO:
t |= TDA9840_MONO;
break;
case V4L2_TUNER_MODE_STEREO:
t |= TDA9840_STEREO;
break;
case V4L2_TUNER_MODE_LANG1:
t |= TDA9840_DUALA;
break;
case V4L2_TUNER_MODE_LANG2:
t |= TDA9840_DUALB;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
t |= TDA9840_DUALAB;
break;
default:
update = 0;
}
if (update)
chip_write(chip, TDA9840_SW, t);
}
static int tda9840_checkit(struct CHIPSTATE *chip)
{
int rc;
rc = chip_read(chip);
if (rc < 0)
return 0;
/* lower 5 bits should be 0 */
return ((rc & 0x1f) == 0) ? 1 : 0;
}
/* ---------------------------------------------------------------------- */
/* 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_MONOSAP 2<<6 /* Selects Mono on left, SAP on right */
#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 */
static int tda9855_volume(int val) { return val/0x2e8+0x27; }
static int tda9855_bass(int val) { return val/0xccc+0x06; }
static int tda9855_treble(int val) { return (val/0x1c71+0x3)<<1; }
static int tda985x_getrxsubchans(struct CHIPSTATE *chip)
{
int mode, val;
/* Add mono mode regardless of SAP and stereo */
/* Allows forced mono */
mode = V4L2_TUNER_SUB_MONO;
val = chip_read(chip);
if (val < 0)
return mode;
if (val & TDA985x_STP)
mode = V4L2_TUNER_SUB_STEREO;
if (val & TDA985x_SAPP)
mode |= V4L2_TUNER_SUB_SAP;
return mode;
}
static void tda985x_setaudmode(struct CHIPSTATE *chip, int mode)
{
int update = 1;
int c6 = chip->shadow.bytes[TDA985x_C6+1] & 0x3f;
switch (mode) {
case V4L2_TUNER_MODE_MONO:
c6 |= TDA985x_MONO;
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1:
c6 |= TDA985x_STEREO;
break;
case V4L2_TUNER_MODE_SAP:
c6 |= TDA985x_SAP;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
c6 |= TDA985x_MONOSAP;
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_INP_MASK 3
#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_MASK (7 << 2)
#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
#define TDA9873_TR_DUALAB 0
/* 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 */
static int tda9873_getrxsubchans(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
int val,mode;
mode = V4L2_TUNER_SUB_MONO;
val = chip_read(chip);
if (val < 0)
return mode;
if (val & TDA9873_STEREO)
mode = V4L2_TUNER_SUB_STEREO;
if (val & TDA9873_DUAL)
mode |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
v4l2_dbg(1, debug, sd,
"tda9873_getrxsubchans(): raw chip read: %d, return: %d\n",
val, mode);
return mode;
}
static void tda9873_setaudmode(struct CHIPSTATE *chip, int mode)
{
struct v4l2_subdev *sd = &chip->sd;
int sw_data = chip->shadow.bytes[TDA9873_SW+1] & ~ TDA9873_TR_MASK;
/* int adj_data = chip->shadow.bytes[TDA9873_AD+1] ; */
if ((sw_data & TDA9873_INP_MASK) != TDA9873_INTERNAL) {
v4l2_dbg(1, debug, sd,
"tda9873_setaudmode(): external input\n");
return;
}
v4l2_dbg(1, debug, sd,
"tda9873_setaudmode(): chip->shadow.bytes[%d] = %d\n",
TDA9873_SW+1, chip->shadow.bytes[TDA9873_SW+1]);
v4l2_dbg(1, debug, sd, "tda9873_setaudmode(): sw_data = %d\n",
sw_data);
switch (mode) {
case V4L2_TUNER_MODE_MONO:
sw_data |= TDA9873_TR_MONO;
break;
case V4L2_TUNER_MODE_STEREO:
sw_data |= TDA9873_TR_STEREO;
break;
case V4L2_TUNER_MODE_LANG1:
sw_data |= TDA9873_TR_DUALA;
break;
case V4L2_TUNER_MODE_LANG2:
sw_data |= TDA9873_TR_DUALB;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
sw_data |= TDA9873_TR_DUALAB;
break;
default:
return;
}
chip_write(chip, TDA9873_SW, sw_data);
v4l2_dbg(1, debug, sd,
"tda9873_setaudmode(): req. mode %d; chip_write: %d\n",
mode, sw_data);
}
static int tda9873_checkit(struct CHIPSTATE *chip)
{
int rc;
rc = chip_read2(chip, 254);
if (rc < 0)
return 0;
return (rc & ~0x1f) == 0x80;
}
/* ---------------------------------------------------------------------- */
/* audio chip description - defines+functions for tda9874h and tda9874a */
/* Dariusz Kowalewski <darekk@automex.pl> */
/* Subaddresses for TDA9874H and TDA9874A (slave rx) */
#define TDA9874A_AGCGR 0x00 /* AGC gain */
#define TDA9874A_GCONR 0x01 /* general config */
#define TDA9874A_MSR 0x02 /* monitor select */
#define TDA9874A_C1FRA 0x03 /* carrier 1 freq. */
#define TDA9874A_C1FRB 0x04 /* carrier 1 freq. */
#define TDA9874A_C1FRC 0x05 /* carrier 1 freq. */
#define TDA9874A_C2FRA 0x06 /* carrier 2 freq. */
#define TDA9874A_C2FRB 0x07 /* carrier 2 freq. */
#define TDA9874A_C2FRC 0x08 /* carrier 2 freq. */
#define TDA9874A_DCR 0x09 /* demodulator config */
#define TDA9874A_FMER 0x0a /* FM de-emphasis */
#define TDA9874A_FMMR 0x0b /* FM dematrix */
#define TDA9874A_C1OLAR 0x0c /* ch.1 output level adj. */
#define TDA9874A_C2OLAR 0x0d /* ch.2 output level adj. */
#define TDA9874A_NCONR 0x0e /* NICAM config */
#define TDA9874A_NOLAR 0x0f /* NICAM output level adj. */
#define TDA9874A_NLELR 0x10 /* NICAM lower error limit */
#define TDA9874A_NUELR 0x11 /* NICAM upper error limit */
#define TDA9874A_AMCONR 0x12 /* audio mute control */
#define TDA9874A_SDACOSR 0x13 /* stereo DAC output select */
#define TDA9874A_AOSR 0x14 /* analog output select */
#define TDA9874A_DAICONR 0x15 /* digital audio interface config */
#define TDA9874A_I2SOSR 0x16 /* I2S-bus output select */
#define TDA9874A_I2SOLAR 0x17 /* I2S-bus output level adj. */
#define TDA9874A_MDACOSR 0x18 /* mono DAC output select (tda9874a) */
#define TDA9874A_ESP 0xFF /* easy standard progr. (tda9874a) */
/* Subaddresses for TDA9874H and TDA9874A (slave tx) */
#define TDA9874A_DSR 0x00 /* device status */
#define TDA9874A_NSR 0x01 /* NICAM status */
#define TDA9874A_NECR 0x02 /* NICAM error count */
#define TDA9874A_DR1 0x03 /* add. data LSB */
#define TDA9874A_DR2 0x04 /* add. data MSB */
#define TDA9874A_LLRA 0x05 /* monitor level read-out LSB */
#define TDA9874A_LLRB 0x06 /* monitor level read-out MSB */
#define TDA9874A_SIFLR 0x07 /* SIF level */
#define TDA9874A_TR2 252 /* test reg. 2 */
#define TDA9874A_TR1 253 /* test reg. 1 */
#define TDA9874A_DIC 254 /* device id. code */
#define TDA9874A_SIC 255 /* software id. code */
static int tda9874a_mode = 1; /* 0: A2, 1: NICAM */
static int tda9874a_GCONR = 0xc0; /* default config. input pin: SIFSEL=0 */
static int tda9874a_NCONR = 0x01; /* default NICAM config.: AMSEL=0,AMUTE=1 */
static int tda9874a_ESP = 0x07; /* default standard: NICAM D/K */
static int tda9874a_dic = -1; /* device id. code */
/* insmod options for tda9874a */
static unsigned int tda9874a_SIF = UNSET;
static unsigned int tda9874a_AMSEL = UNSET;
static unsigned int tda9874a_STD = UNSET;
module_param(tda9874a_SIF, int, 0444);
module_param(tda9874a_AMSEL, int, 0444);
module_param(tda9874a_STD, int, 0444);
/*
* initialization table for tda9874 decoder:
* - carrier 1 freq. registers (3 bytes)
* - carrier 2 freq. registers (3 bytes)
* - demudulator config register
* - FM de-emphasis register (slow identification mode)
* Note: frequency registers must be written in single i2c transfer.
*/
static struct tda9874a_MODES {
char *name;
audiocmd cmd;
} tda9874a_modelist[9] = {
{ "A2, B/G", /* default */
{ 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x77,0xA0,0x00, 0x00,0x00 }} },
{ "A2, M (Korea)",
{ 9, { TDA9874A_C1FRA, 0x5D,0xC0,0x00, 0x62,0x6A,0xAA, 0x20,0x22 }} },
{ "A2, D/K (1)",
{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x82,0x60,0x00, 0x00,0x00 }} },
{ "A2, D/K (2)",
{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x8C,0x75,0x55, 0x00,0x00 }} },
{ "A2, D/K (3)",
{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x77,0xA0,0x00, 0x00,0x00 }} },
{ "NICAM, I",
{ 9, { TDA9874A_C1FRA, 0x7D,0x00,0x00, 0x88,0x8A,0xAA, 0x08,0x33 }} },
{ "NICAM, B/G",
{ 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x79,0xEA,0xAA, 0x08,0x33 }} },
{ "NICAM, D/K",
{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x08,0x33 }} },
{ "NICAM, L",
{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x09,0x33 }} }
};
static int tda9874a_setup(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
chip_write(chip, TDA9874A_AGCGR, 0x00); /* 0 dB */
chip_write(chip, TDA9874A_GCONR, tda9874a_GCONR);
chip_write(chip, TDA9874A_MSR, (tda9874a_mode) ? 0x03:0x02);
if(tda9874a_dic == 0x11) {
chip_write(chip, TDA9874A_FMMR, 0x80);
} else { /* dic == 0x07 */
chip_cmd(chip,"tda9874_modelist",&tda9874a_modelist[tda9874a_STD].cmd);
chip_write(chip, TDA9874A_FMMR, 0x00);
}
chip_write(chip, TDA9874A_C1OLAR, 0x00); /* 0 dB */
chip_write(chip, TDA9874A_C2OLAR, 0x00); /* 0 dB */
chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
chip_write(chip, TDA9874A_NOLAR, 0x00); /* 0 dB */
/* Note: If signal quality is poor you may want to change NICAM */
/* error limit registers (NLELR and NUELR) to some greater values. */
/* Then the sound would remain stereo, but won't be so clear. */
chip_write(chip, TDA9874A_NLELR, 0x14); /* default */
chip_write(chip, TDA9874A_NUELR, 0x50); /* default */
if(tda9874a_dic == 0x11) {
chip_write(chip, TDA9874A_AMCONR, 0xf9);
chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
chip_write(chip, TDA9874A_AOSR, 0x80);
chip_write(chip, TDA9874A_MDACOSR, (tda9874a_mode) ? 0x82:0x80);
chip_write(chip, TDA9874A_ESP, tda9874a_ESP);
} else { /* dic == 0x07 */
chip_write(chip, TDA9874A_AMCONR, 0xfb);
chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
chip_write(chip, TDA9874A_AOSR, 0x00); /* or 0x10 */
}
v4l2_dbg(1, debug, sd, "tda9874a_setup(): %s [0x%02X].\n",
tda9874a_modelist[tda9874a_STD].name,tda9874a_STD);
return 1;
}
static int tda9874a_getrxsubchans(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
int dsr,nsr,mode;
int necr; /* just for debugging */
mode = V4L2_TUNER_SUB_MONO;
dsr = chip_read2(chip, TDA9874A_DSR);
if (dsr < 0)
return mode;
nsr = chip_read2(chip, TDA9874A_NSR);
if (nsr < 0)
return mode;
necr = chip_read2(chip, TDA9874A_NECR);
if (necr < 0)
return mode;
/* need to store dsr/nsr somewhere */
chip->shadow.bytes[MAXREGS-2] = dsr;
chip->shadow.bytes[MAXREGS-1] = nsr;
if(tda9874a_mode) {
/* Note: DSR.RSSF and DSR.AMSTAT bits are also checked.
* If NICAM auto-muting is enabled, DSR.AMSTAT=1 indicates
* that sound has (temporarily) switched from NICAM to
* mono FM (or AM) on 1st sound carrier due to high NICAM bit
* error count. So in fact there is no stereo in this case :-(
* But changing the mode to V4L2_TUNER_MODE_MONO would switch
* external 4052 multiplexer in audio_hook().
*/
if(nsr & 0x02) /* NSR.S/MB=1 */
mode = V4L2_TUNER_SUB_STEREO;
if(nsr & 0x01) /* NSR.D/SB=1 */
mode |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
} else {
if(dsr & 0x02) /* DSR.IDSTE=1 */
mode = V4L2_TUNER_SUB_STEREO;
if(dsr & 0x04) /* DSR.IDDUA=1 */
mode |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
}
v4l2_dbg(1, debug, sd,
"tda9874a_getrxsubchans(): DSR=0x%X, NSR=0x%X, NECR=0x%X, return: %d.\n",
dsr, nsr, necr, mode);
return mode;
}
static void tda9874a_setaudmode(struct CHIPSTATE *chip, int mode)
{
struct v4l2_subdev *sd = &chip->sd;
/* Disable/enable NICAM auto-muting (based on DSR.RSSF status bit). */
/* If auto-muting is disabled, we can hear a signal of degrading quality. */
if (tda9874a_mode) {
if(chip->shadow.bytes[MAXREGS-2] & 0x20) /* DSR.RSSF=1 */
tda9874a_NCONR &= 0xfe; /* enable */
else
tda9874a_NCONR |= 0x01; /* disable */
chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
}
/* Note: TDA9874A supports automatic FM dematrixing (FMMR register)
* and has auto-select function for audio output (AOSR register).
* Old TDA9874H doesn't support these features.
* TDA9874A also has additional mono output pin (OUTM), which
* on same (all?) tv-cards is not used, anyway (as well as MONOIN).
*/
if(tda9874a_dic == 0x11) {
int aosr = 0x80;
int mdacosr = (tda9874a_mode) ? 0x82:0x80;
switch(mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_STEREO:
break;
case V4L2_TUNER_MODE_LANG1:
aosr = 0x80; /* auto-select, dual A/A */
mdacosr = (tda9874a_mode) ? 0x82:0x80;
break;
case V4L2_TUNER_MODE_LANG2:
aosr = 0xa0; /* auto-select, dual B/B */
mdacosr = (tda9874a_mode) ? 0x83:0x81;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
aosr = 0x00; /* always route L to L and R to R */
mdacosr = (tda9874a_mode) ? 0x82:0x80;
break;
default:
return;
}
chip_write(chip, TDA9874A_AOSR, aosr);
chip_write(chip, TDA9874A_MDACOSR, mdacosr);
v4l2_dbg(1, debug, sd,
"tda9874a_setaudmode(): req. mode %d; AOSR=0x%X, MDACOSR=0x%X.\n",
mode, aosr, mdacosr);
} else { /* dic == 0x07 */
int fmmr,aosr;
switch(mode) {
case V4L2_TUNER_MODE_MONO:
fmmr = 0x00; /* mono */
aosr = 0x10; /* A/A */
break;
case V4L2_TUNER_MODE_STEREO:
if(tda9874a_mode) {
fmmr = 0x00;
aosr = 0x00; /* handled by NICAM auto-mute */
} else {
fmmr = (tda9874a_ESP == 1) ? 0x05 : 0x04; /* stereo */
aosr = 0x00;
}
break;
case V4L2_TUNER_MODE_LANG1:
fmmr = 0x02; /* dual */
aosr = 0x10; /* dual A/A */
break;
case V4L2_TUNER_MODE_LANG2:
fmmr = 0x02; /* dual */
aosr = 0x20; /* dual B/B */
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
fmmr = 0x02; /* dual */
aosr = 0x00; /* dual A/B */
break;
default:
return;
}
chip_write(chip, TDA9874A_FMMR, fmmr);
chip_write(chip, TDA9874A_AOSR, aosr);
v4l2_dbg(1, debug, sd,
"tda9874a_setaudmode(): req. mode %d; FMMR=0x%X, AOSR=0x%X.\n",
mode, fmmr, aosr);
}
}
static int tda9874a_checkit(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
int dic,sic; /* device id. and software id. codes */
dic = chip_read2(chip, TDA9874A_DIC);
if (dic < 0)
return 0;
sic = chip_read2(chip, TDA9874A_SIC);
if (sic < 0)
return 0;
v4l2_dbg(1, debug, sd, "tda9874a_checkit(): DIC=0x%X, SIC=0x%X.\n", dic, sic);
if((dic == 0x11)||(dic == 0x07)) {
v4l2_info(sd, "found tda9874%s.\n", (dic == 0x11) ? "a" : "h");
tda9874a_dic = dic; /* remember device id. */
return 1;
}
return 0; /* not found */
}
static int tda9874a_initialize(struct CHIPSTATE *chip)
{
if (tda9874a_SIF > 2)
tda9874a_SIF = 1;
if (tda9874a_STD >= ARRAY_SIZE(tda9874a_modelist))
tda9874a_STD = 0;
if(tda9874a_AMSEL > 1)
tda9874a_AMSEL = 0;
if(tda9874a_SIF == 1)
tda9874a_GCONR = 0xc0; /* sound IF input 1 */
else
tda9874a_GCONR = 0xc1; /* sound IF input 2 */
tda9874a_ESP = tda9874a_STD;
tda9874a_mode = (tda9874a_STD < 5) ? 0 : 1;
if(tda9874a_AMSEL == 0)
tda9874a_NCONR = 0x01; /* auto-mute: analog mono input */
else
tda9874a_NCONR = 0x05; /* auto-mute: 1st carrier FM or AM */
tda9874a_setup(chip);
return 0;
}
/* ---------------------------------------------------------------------- */
/* audio chip description - defines+functions for tda9875 */
/* The TDA9875 is made by Philips Semiconductor
* http://www.semiconductors.philips.com
* TDA9875: I2C-bus controlled DSP audio processor, FM demodulator
*
*/
/* subaddresses for TDA9875 */
#define TDA9875_MUT 0x12 /*General mute (value --> 0b11001100*/
#define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */
#define TDA9875_DACOS 0x13 /*DAC i/o select (ADC) 0b0000100*/
#define TDA9875_LOSR 0x16 /*Line output select regirter 0b0100 0001*/
#define TDA9875_CH1V 0x0c /*Channel 1 volume (mute)*/
#define TDA9875_CH2V 0x0d /*Channel 2 volume (mute)*/
#define TDA9875_SC1 0x14 /*SCART 1 in (mono)*/
#define TDA9875_SC2 0x15 /*SCART 2 in (mono)*/
#define TDA9875_ADCIS 0x17 /*ADC input select (mono) 0b0110 000*/
#define TDA9875_AER 0x19 /*Audio effect (AVL+Pseudo) 0b0000 0110*/
#define TDA9875_MCS 0x18 /*Main channel select (DAC) 0b0000100*/
#define TDA9875_MVL 0x1a /* Main volume gauche */
#define TDA9875_MVR 0x1b /* Main volume droite */
#define TDA9875_MBA 0x1d /* Main Basse */
#define TDA9875_MTR 0x1e /* Main treble */
#define TDA9875_ACS 0x1f /* Auxiliary channel select (FM) 0b0000000*/
#define TDA9875_AVL 0x20 /* Auxiliary volume gauche */
#define TDA9875_AVR 0x21 /* Auxiliary volume droite */
#define TDA9875_ABA 0x22 /* Auxiliary Basse */
#define TDA9875_ATR 0x23 /* Auxiliary treble */
#define TDA9875_MSR 0x02 /* Monitor select register */
#define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */
#define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */
#define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */
#define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */
#define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */
#define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */
#define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/
#define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/
#define TDA9875_FMAT 0x0b /* FM Matrix regirter*/
/* values */
#define TDA9875_MUTE_ON 0xff /* general mute */
#define TDA9875_MUTE_OFF 0xcc /* general no mute */
static int tda9875_initialize(struct CHIPSTATE *chip)
{
chip_write(chip, TDA9875_CFG, 0xd0); /*reg de config 0 (reset)*/
chip_write(chip, TDA9875_MSR, 0x03); /* Monitor 0b00000XXX*/
chip_write(chip, TDA9875_C1MSB, 0x00); /*Car1(FM) MSB XMHz*/
chip_write(chip, TDA9875_C1MIB, 0x00); /*Car1(FM) MIB XMHz*/
chip_write(chip, TDA9875_C1LSB, 0x00); /*Car1(FM) LSB XMHz*/
chip_write(chip, TDA9875_C2MSB, 0x00); /*Car2(NICAM) MSB XMHz*/
chip_write(chip, TDA9875_C2MIB, 0x00); /*Car2(NICAM) MIB XMHz*/
chip_write(chip, TDA9875_C2LSB, 0x00); /*Car2(NICAM) LSB XMHz*/
chip_write(chip, TDA9875_DCR, 0x00); /*Demod config 0x00*/
chip_write(chip, TDA9875_DEEM, 0x44); /*DE-Emph 0b0100 0100*/
chip_write(chip, TDA9875_FMAT, 0x00); /*FM Matrix reg 0x00*/
chip_write(chip, TDA9875_SC1, 0x00); /* SCART 1 (SC1)*/
chip_write(chip, TDA9875_SC2, 0x01); /* SCART 2 (sc2)*/
chip_write(chip, TDA9875_CH1V, 0x10); /* Channel volume 1 mute*/
chip_write(chip, TDA9875_CH2V, 0x10); /* Channel volume 2 mute */
chip_write(chip, TDA9875_DACOS, 0x02); /* sig DAC i/o(in:nicam)*/
chip_write(chip, TDA9875_ADCIS, 0x6f); /* sig ADC input(in:mono)*/
chip_write(chip, TDA9875_LOSR, 0x00); /* line out (in:mono)*/
chip_write(chip, TDA9875_AER, 0x00); /*06 Effect (AVL+PSEUDO) */
chip_write(chip, TDA9875_MCS, 0x44); /* Main ch select (DAC) */
chip_write(chip, TDA9875_MVL, 0x03); /* Vol Main left 10dB */
chip_write(chip, TDA9875_MVR, 0x03); /* Vol Main right 10dB*/
chip_write(chip, TDA9875_MBA, 0x00); /* Main Bass Main 0dB*/
chip_write(chip, TDA9875_MTR, 0x00); /* Main Treble Main 0dB*/
chip_write(chip, TDA9875_ACS, 0x44); /* Aux chan select (dac)*/
chip_write(chip, TDA9875_AVL, 0x00); /* Vol Aux left 0dB*/
chip_write(chip, TDA9875_AVR, 0x00); /* Vol Aux right 0dB*/
chip_write(chip, TDA9875_ABA, 0x00); /* Aux Bass Main 0dB*/
chip_write(chip, TDA9875_ATR, 0x00); /* Aux Aigus Main 0dB*/
chip_write(chip, TDA9875_MUT, 0xcc); /* General mute */
return 0;
}
static int tda9875_volume(int val) { return (unsigned char)(val / 602 - 84); }
static int tda9875_bass(int val) { return (unsigned char)(max(-12, val / 2115 - 15)); }
static int tda9875_treble(int val) { return (unsigned char)(val / 2622 - 12); }
/* ----------------------------------------------------------------------- */
/* *********************** *
* i2c interface functions *
* *********************** */
static int tda9875_checkit(struct CHIPSTATE *chip)
{
struct v4l2_subdev *sd = &chip->sd;
int dic, rev;
dic = chip_read2(chip, 254);
if (dic < 0)
return 0;
rev = chip_read2(chip, 255);
if (rev < 0)
return 0;
if (dic == 0 || dic == 2) { /* tda9875 and tda9875A */
v4l2_info(sd, "found tda9875%s rev. %d.\n",
dic == 0 ? "" : "A", rev);
return 1;
}
return 0;
}
/* ---------------------------------------------------------------------- */
/* 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 TEA6320_V 0x00 /* volume (0-5)/loudness off (6)/zero crossing mute(7) */
#define TEA6320_FFR 0x01 /* fader front right (0-5) */
#define TEA6320_FFL 0x02 /* fader front left (0-5) */
#define TEA6320_FRR 0x03 /* fader rear right (0-5) */
#define TEA6320_FRL 0x04 /* fader rear left (0-5) */
#define TEA6320_BA 0x05 /* bass (0-4) */
#define TEA6320_TR 0x06 /* treble (0-4) */
#define TEA6320_S 0x07 /* switch register */
/* values for those registers: */
#define TEA6320_S_SA 0x07 /* stereo A input */
#define TEA6320_S_SB 0x06 /* stereo B */
#define TEA6320_S_SC 0x05 /* stereo C */
#define TEA6320_S_SD 0x04 /* stereo D */
#define TEA6320_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 */
static int tea6300_shift10(int val) { return val >> 10; }
static int tea6300_shift12(int val) { return val >> 12; }
/* Assumes 16bit input (values 0x3f to 0x0c are unique, values less than */
/* 0x0c mirror those immediately higher) */
static int tea6320_volume(int val) { return (val / (65535/(63-12)) + 12) & 0x3f; }
static int tea6320_shift11(int val) { return val >> 11; }
static int tea6320_initialize(struct CHIPSTATE * chip)
{
chip_write(chip, TEA6320_FFR, 0x3f);
chip_write(chip, TEA6320_FFL, 0x3f);
chip_write(chip, TEA6320_FRR, 0x3f);
chip_write(chip, TEA6320_FRL, 0x3f);
return 0;
}
/* ---------------------------------------------------------------------- */
/* 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_CH1 0xCE /* audio channel 1 (mute off) - "linear stereo" mode */
#define TDA8425_S1_CH2 0xCF /* audio channel 2 (mute off) - "linear stereo" mode */
#define TDA8425_S1_MU 0x20 /* mute bit */
#define TDA8425_S1_STEREO 0x18 /* stereo bits */
#define TDA8425_S1_STEREO_SPATIAL 0x18 /* spatial stereo */
#define TDA8425_S1_STEREO_LINEAR 0x08 /* linear stereo */
#define TDA8425_S1_STEREO_PSEUDO 0x10 /* pseudo stereo */
#define TDA8425_S1_STEREO_MONO 0x00 /* forced mono */
#define TDA8425_S1_ML 0x06 /* language selector */
#define TDA8425_S1_ML_SOUND_A 0x02 /* sound a */
#define TDA8425_S1_ML_SOUND_B 0x04 /* sound b */
#define TDA8425_S1_ML_STEREO 0x06 /* stereo */
#define TDA8425_S1_IS 0x01 /* channel selector */
static int tda8425_shift10(int val) { return (val >> 10) | 0xc0; }
static int tda8425_shift12(int val) { return (val >> 12) | 0xf0; }
static void tda8425_setaudmode(struct CHIPSTATE *chip, int mode)
{
int s1 = chip->shadow.bytes[TDA8425_S1+1] & 0xe1;
switch (mode) {
case V4L2_TUNER_MODE_LANG1:
s1 |= TDA8425_S1_ML_SOUND_A;
s1 |= TDA8425_S1_STEREO_PSEUDO;
break;
case V4L2_TUNER_MODE_LANG2:
s1 |= TDA8425_S1_ML_SOUND_B;
s1 |= TDA8425_S1_STEREO_PSEUDO;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
s1 |= TDA8425_S1_ML_STEREO;
s1 |= TDA8425_S1_STEREO_LINEAR;
break;
case V4L2_TUNER_MODE_MONO:
s1 |= TDA8425_S1_ML_STEREO;
s1 |= TDA8425_S1_STEREO_MONO;
break;
case V4L2_TUNER_MODE_STEREO:
s1 |= TDA8425_S1_ML_STEREO;
s1 |= TDA8425_S1_STEREO_SPATIAL;
break;
default:
return;
}
chip_write(chip,TDA8425_S1,s1);
}
/* ---------------------------------------------------------------------- */
/* 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 - defines+functions for TA8874Z */
/* write 1st byte */
#define TA8874Z_LED_STE 0x80
#define TA8874Z_LED_BIL 0x40
#define TA8874Z_LED_EXT 0x20
#define TA8874Z_MONO_SET 0x10
#define TA8874Z_MUTE 0x08
#define TA8874Z_F_MONO 0x04
#define TA8874Z_MODE_SUB 0x02
#define TA8874Z_MODE_MAIN 0x01
/* write 2nd byte */
/*#define TA8874Z_TI 0x80 */ /* test mode */
#define TA8874Z_SEPARATION 0x3f
#define TA8874Z_SEPARATION_DEFAULT 0x10
/* read */
#define TA8874Z_B1 0x80
#define TA8874Z_B0 0x40
#define TA8874Z_CHAG_FLAG 0x20
/*
* B1 B0
* mono L H
* stereo L L
* BIL H L
*/
static int ta8874z_getrxsubchans(struct CHIPSTATE *chip)
{
int val, mode;
mode = V4L2_TUNER_SUB_MONO;
val = chip_read(chip);
if (val < 0)
return mode;
if (val & TA8874Z_B1){
mode |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
}else if (!(val & TA8874Z_B0)){
mode = V4L2_TUNER_SUB_STEREO;
}
/* v4l2_dbg(1, debug, &chip->sd,
"ta8874z_getrxsubchans(): raw chip read: 0x%02x, return: 0x%02x\n",
val, mode); */
return mode;
}
static audiocmd ta8874z_stereo = { 2, {0, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_mono = {2, { TA8874Z_MONO_SET, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_main = {2, { 0, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_sub = {2, { TA8874Z_MODE_SUB, TA8874Z_SEPARATION_DEFAULT}};
static audiocmd ta8874z_both = {2, { TA8874Z_MODE_MAIN | TA8874Z_MODE_SUB, TA8874Z_SEPARATION_DEFAULT}};
static void ta8874z_setaudmode(struct CHIPSTATE *chip, int mode)
{
struct v4l2_subdev *sd = &chip->sd;
int update = 1;
audiocmd *t = NULL;
v4l2_dbg(1, debug, sd, "ta8874z_setaudmode(): mode: 0x%02x\n", mode);
switch(mode){
case V4L2_TUNER_MODE_MONO:
t = &ta8874z_mono;
break;
case V4L2_TUNER_MODE_STEREO:
t = &ta8874z_stereo;
break;
case V4L2_TUNER_MODE_LANG1:
t = &ta8874z_main;
break;
case V4L2_TUNER_MODE_LANG2:
t = &ta8874z_sub;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
t = &ta8874z_both;
break;
default:
update = 0;
}
if(update)
chip_cmd(chip, "TA8874Z", t);
}
static int ta8874z_checkit(struct CHIPSTATE *chip)
{
int rc;
rc = chip_read(chip);
if (rc < 0)
return rc;
return ((rc & 0x1f) == 0x1f) ? 1 : 0;
}
/* ---------------------------------------------------------------------- */
/* audio chip descriptions - struct CHIPDESC */
/* insmod options to enable/disable individual audio chips */
static int tda8425 = 1;
static int tda9840 = 1;
static int tda9850 = 1;
static int tda9855 = 1;
static int tda9873 = 1;
static int tda9874a = 1;
static int tda9875 = 1;
static int tea6300; /* default 0 - address clash with msp34xx */
static int tea6320; /* default 0 - address clash with msp34xx */
static int tea6420 = 1;
static int pic16c54 = 1;
static int ta8874z; /* default 0 - address clash with tda9840 */
module_param(tda8425, int, 0444);
module_param(tda9840, int, 0444);
module_param(tda9850, int, 0444);
module_param(tda9855, int, 0444);
module_param(tda9873, int, 0444);
module_param(tda9874a, int, 0444);
module_param(tda9875, int, 0444);
module_param(tea6300, int, 0444);
module_param(tea6320, int, 0444);
module_param(tea6420, int, 0444);
module_param(pic16c54, int, 0444);
module_param(ta8874z, int, 0444);
static struct CHIPDESC chiplist[] = {
{
.name = "tda9840",
.insmodopt = &tda9840,
.addr_lo = I2C_ADDR_TDA9840 >> 1,
.addr_hi = I2C_ADDR_TDA9840 >> 1,
.registers = 5,
.flags = CHIP_NEED_CHECKMODE,
/* callbacks */
.checkit = tda9840_checkit,
.getrxsubchans = tda9840_getrxsubchans,
.setaudmode = tda9840_setaudmode,
.init = { 2, { TDA9840_TEST, TDA9840_TEST_INT1SN
/* ,TDA9840_SW, TDA9840_MONO */} }
},
{
.name = "tda9873h",
.insmodopt = &tda9873,
.addr_lo = I2C_ADDR_TDA985x_L >> 1,
.addr_hi = I2C_ADDR_TDA985x_H >> 1,
.registers = 3,
.flags = CHIP_HAS_INPUTSEL | CHIP_NEED_CHECKMODE,
/* callbacks */
.checkit = tda9873_checkit,
.getrxsubchans = tda9873_getrxsubchans,
.setaudmode = tda9873_setaudmode,
.init = { 4, { TDA9873_SW, 0xa4, 0x06, 0x03 } },
.inputreg = TDA9873_SW,
.inputmute = TDA9873_MUTE | TDA9873_AUTOMUTE,
.inputmap = {0xa0, 0xa2, 0xa0, 0xa0},
.inputmask = TDA9873_INP_MASK|TDA9873_MUTE|TDA9873_AUTOMUTE,
},
{
.name = "tda9874h/a",
.insmodopt = &tda9874a,
.addr_lo = I2C_ADDR_TDA9874 >> 1,
.addr_hi = I2C_ADDR_TDA9874 >> 1,
.flags = CHIP_NEED_CHECKMODE,
/* callbacks */
.initialize = tda9874a_initialize,
.checkit = tda9874a_checkit,
.getrxsubchans = tda9874a_getrxsubchans,
.setaudmode = tda9874a_setaudmode,
},
{
.name = "tda9875",
.insmodopt = &tda9875,
.addr_lo = I2C_ADDR_TDA9875 >> 1,
.addr_hi = I2C_ADDR_TDA9875 >> 1,
.flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE,
/* callbacks */
.initialize = tda9875_initialize,
.checkit = tda9875_checkit,
.volfunc = tda9875_volume,
.bassfunc = tda9875_bass,
.treblefunc = tda9875_treble,
.leftreg = TDA9875_MVL,
.rightreg = TDA9875_MVR,
.bassreg = TDA9875_MBA,
.treblereg = TDA9875_MTR,
.volinit = 58880,
},
{
.name = "tda9850",
.insmodopt = &tda9850,
.addr_lo = I2C_ADDR_TDA985x_L >> 1,
.addr_hi = I2C_ADDR_TDA985x_H >> 1,
.registers = 11,
.getrxsubchans = tda985x_getrxsubchans,
.setaudmode = tda985x_setaudmode,
.init = { 8, { TDA9850_C4, 0x08, 0x08, TDA985x_STEREO, 0x07, 0x10, 0x10, 0x03 } }
},
{
.name = "tda9855",
.insmodopt = &tda9855,
.addr_lo = I2C_ADDR_TDA985x_L >> 1,
.addr_hi = I2C_ADDR_TDA985x_H >> 1,
.registers = 11,
.flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE,
.leftreg = TDA9855_VL,
.rightreg = TDA9855_VR,
.bassreg = TDA9855_BA,
.treblereg = TDA9855_TR,
/* callbacks */
.volfunc = tda9855_volume,
.bassfunc = tda9855_bass,
.treblefunc = tda9855_treble,
.getrxsubchans = tda985x_getrxsubchans,
.setaudmode = tda985x_setaudmode,
.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",
.insmodopt = &tea6300,
.addr_lo = I2C_ADDR_TEA6300 >> 1,
.addr_hi = I2C_ADDR_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,
/* callbacks */
.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 = "tea6320",
.insmodopt = &tea6320,
.addr_lo = I2C_ADDR_TEA6300 >> 1,
.addr_hi = I2C_ADDR_TEA6300 >> 1,
.registers = 8,
.flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL,
.leftreg = TEA6320_V,
.rightreg = TEA6320_V,
.bassreg = TEA6320_BA,
.treblereg = TEA6320_TR,
/* callbacks */
.initialize = tea6320_initialize,
.volfunc = tea6320_volume,
.bassfunc = tea6320_shift11,
.treblefunc = tea6320_shift11,
.inputreg = TEA6320_S,
.inputmap = { TEA6320_S_SA, TEA6420_S_SB, TEA6300_S_SC, TEA6320_S_SD },
.inputmute = TEA6300_S_GMU,
},
{
.name = "tea6420",
.insmodopt = &tea6420,
.addr_lo = I2C_ADDR_TEA6420 >> 1,
.addr_hi = I2C_ADDR_TEA6420 >> 1,
.registers = 1,
.flags = CHIP_HAS_INPUTSEL,
.inputreg = -1,
.inputmap = { TEA6420_S_SA, TEA6420_S_SB, TEA6420_S_SC },
.inputmute = TEA6420_S_GMU,
.inputmask = 0x07,
},
{
.name = "tda8425",
.insmodopt = &tda8425,
.addr_lo = I2C_ADDR_TDA8425 >> 1,
.addr_hi = I2C_ADDR_TDA8425 >> 1,
.registers = 9,
.flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL,
.leftreg = TDA8425_VL,
.rightreg = TDA8425_VR,
.bassreg = TDA8425_BA,
.treblereg = TDA8425_TR,
/* callbacks */
.volfunc = tda8425_shift10,
.bassfunc = tda8425_shift12,
.treblefunc = tda8425_shift12,
.setaudmode = tda8425_setaudmode,
.inputreg = TDA8425_S1,
.inputmap = { TDA8425_S1_CH1, TDA8425_S1_CH1, TDA8425_S1_CH1 },
.inputmute = TDA8425_S1_OFF,
},
{
.name = "pic16c54 (PV951)",
.insmodopt = &pic16c54,
.addr_lo = I2C_ADDR_PIC16C54 >> 1,
.addr_hi = I2C_ADDR_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,
PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_LINE,
PIC16C54_MISC_SND_MUTE},
.inputmute = PIC16C54_MISC_SND_MUTE,
},
{
.name = "ta8874z",
.checkit = ta8874z_checkit,
.insmodopt = &ta8874z,
.addr_lo = I2C_ADDR_TDA9840 >> 1,
.addr_hi = I2C_ADDR_TDA9840 >> 1,
.registers = 2,
/* callbacks */
.getrxsubchans = ta8874z_getrxsubchans,
.setaudmode = ta8874z_setaudmode,
.init = {2, { TA8874Z_MONO_SET, TA8874Z_SEPARATION_DEFAULT}},
},
{ .name = NULL } /* EOF */
};
/* ---------------------------------------------------------------------- */
static int tvaudio_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
struct CHIPSTATE *chip = to_state(sd);
struct CHIPDESC *desc = chip->desc;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
chip->muted = ctrl->val;
if (chip->muted)
chip_write_masked(chip,desc->inputreg,desc->inputmute,desc->inputmask);
else
chip_write_masked(chip,desc->inputreg,
desc->inputmap[chip->input],desc->inputmask);
return 0;
case V4L2_CID_AUDIO_VOLUME: {
u32 volume, balance;
u32 left, right;
volume = chip->volume->val;
balance = chip->balance->val;
left = (min(65536U - balance, 32768U) * volume) / 32768U;
right = (min(balance, 32768U) * volume) / 32768U;
chip_write(chip, desc->leftreg, desc->volfunc(left));
chip_write(chip, desc->rightreg, desc->volfunc(right));
return 0;
}
case V4L2_CID_AUDIO_BASS:
chip_write(chip, desc->bassreg, desc->bassfunc(ctrl->val));
return 0;
case V4L2_CID_AUDIO_TREBLE:
chip_write(chip, desc->treblereg, desc->treblefunc(ctrl->val));
return 0;
}
return -EINVAL;
}
/* ---------------------------------------------------------------------- */
/* video4linux interface */
static int tvaudio_s_radio(struct v4l2_subdev *sd)
{
struct CHIPSTATE *chip = to_state(sd);
chip->radio = 1;
/* del_timer(&chip->wt); */
return 0;
}
static int tvaudio_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct CHIPSTATE *chip = to_state(sd);
struct CHIPDESC *desc = chip->desc;
if (!(desc->flags & CHIP_HAS_INPUTSEL))
return 0;
if (input >= 4)
return -EINVAL;
/* There are four inputs: tuner, radio, extern and intern. */
chip->input = input;
if (chip->muted)
return 0;
chip_write_masked(chip, desc->inputreg,
desc->inputmap[chip->input], desc->inputmask);
return 0;
}
static int tvaudio_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
{
struct CHIPSTATE *chip = to_state(sd);
struct CHIPDESC *desc = chip->desc;
if (!desc->setaudmode)
return 0;
if (chip->radio)
return 0;
switch (vt->audmode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1:
case V4L2_TUNER_MODE_LANG2:
case V4L2_TUNER_MODE_LANG1_LANG2:
break;
default:
return -EINVAL;
}
chip->audmode = vt->audmode;
if (chip->thread)
wake_up_process(chip->thread);
else
desc->setaudmode(chip, vt->audmode);
return 0;
}
static int tvaudio_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{
struct CHIPSTATE *chip = to_state(sd);
struct CHIPDESC *desc = chip->desc;
if (!desc->getrxsubchans)
return 0;
if (chip->radio)
return 0;
vt->audmode = chip->audmode;
vt->rxsubchans = desc->getrxsubchans(chip);
vt->capability |= V4L2_TUNER_CAP_STEREO |
V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
return 0;
}
static int tvaudio_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct CHIPSTATE *chip = to_state(sd);
chip->radio = 0;
return 0;
}
static int tvaudio_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
{
struct CHIPSTATE *chip = to_state(sd);
struct CHIPDESC *desc = chip->desc;
/* For chips that provide getrxsubchans and setaudmode, and doesn't
automatically follows the stereo carrier, a kthread is
created to set the audio standard. In this case, when then
the video channel is changed, tvaudio starts on MONO mode.
After waiting for 2 seconds, the kernel thread is called,
to follow whatever audio standard is pointed by the
audio carrier.
*/
if (chip->thread) {
desc->setaudmode(chip, V4L2_TUNER_MODE_MONO);
chip->prevmode = -1; /* reset previous mode */
mod_timer(&chip->wt, jiffies+msecs_to_jiffies(2000));
}
return 0;
}
static int tvaudio_log_status(struct v4l2_subdev *sd)
{
struct CHIPSTATE *chip = to_state(sd);
struct CHIPDESC *desc = chip->desc;
v4l2_info(sd, "Chip: %s\n", desc->name);
v4l2_ctrl_handler_log_status(&chip->hdl, sd->name);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops tvaudio_ctrl_ops = {
.s_ctrl = tvaudio_s_ctrl,
};
static const struct v4l2_subdev_core_ops tvaudio_core_ops = {
.log_status = tvaudio_log_status,
};
static const struct v4l2_subdev_tuner_ops tvaudio_tuner_ops = {
.s_radio = tvaudio_s_radio,
.s_frequency = tvaudio_s_frequency,
.s_tuner = tvaudio_s_tuner,
.g_tuner = tvaudio_g_tuner,
};
static const struct v4l2_subdev_audio_ops tvaudio_audio_ops = {
.s_routing = tvaudio_s_routing,
};
static const struct v4l2_subdev_video_ops tvaudio_video_ops = {
.s_std = tvaudio_s_std,
};
static const struct v4l2_subdev_ops tvaudio_ops = {
.core = &tvaudio_core_ops,
.tuner = &tvaudio_tuner_ops,
.audio = &tvaudio_audio_ops,
.video = &tvaudio_video_ops,
};
/* ----------------------------------------------------------------------- */
/* i2c registration */
static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct CHIPSTATE *chip;
struct CHIPDESC *desc;
struct v4l2_subdev *sd;
if (debug) {
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(KERN_CONT "%s%s",
(desc == chiplist) ? "" : ", ", desc->name);
printk(KERN_CONT "\n");
}
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
sd = &chip->sd;
v4l2_i2c_subdev_init(sd, client, &tvaudio_ops);
/* find description for the chip */
v4l2_dbg(1, debug, sd, "chip found @ 0x%x\n", client->addr<<1);
for (desc = chiplist; desc->name != NULL; desc++) {
if (0 == *(desc->insmodopt))
continue;
if (client->addr < desc->addr_lo ||
client->addr > desc->addr_hi)
continue;
if (desc->checkit && !desc->checkit(chip))
continue;
break;
}
if (desc->name == NULL) {
v4l2_dbg(1, debug, sd, "no matching chip description found\n");
return -EIO;
}
v4l2_info(sd, "%s found @ 0x%x (%s)\n", desc->name, client->addr<<1, client->adapter->name);
if (desc->flags) {
v4l2_dbg(1, debug, sd, "matches:%s%s%s.\n",
(desc->flags & CHIP_HAS_VOLUME) ? " volume" : "",
(desc->flags & CHIP_HAS_BASSTREBLE) ? " bass/treble" : "",
(desc->flags & CHIP_HAS_INPUTSEL) ? " audiomux" : "");
}
/* fill required data structures */
if (!id)
strlcpy(client->name, desc->name, I2C_NAME_SIZE);
chip->desc = desc;
chip->shadow.count = desc->registers+1;
chip->prevmode = -1;
chip->audmode = V4L2_TUNER_MODE_LANG1;
/* initialization */
if (desc->initialize != NULL)
desc->initialize(chip);
else
chip_cmd(chip, "init", &desc->init);
v4l2_ctrl_handler_init(&chip->hdl, 5);
if (desc->flags & CHIP_HAS_INPUTSEL)
v4l2_ctrl_new_std(&chip->hdl, &tvaudio_ctrl_ops,
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
if (desc->flags & CHIP_HAS_VOLUME) {
if (!desc->volfunc) {
/* This shouldn't be happen. Warn user, but keep working
without volume controls
*/
v4l2_info(sd, "volume callback undefined!\n");
desc->flags &= ~CHIP_HAS_VOLUME;
} else {
chip->volume = v4l2_ctrl_new_std(&chip->hdl,
&tvaudio_ctrl_ops, V4L2_CID_AUDIO_VOLUME,
0, 65535, 65535 / 100,
desc->volinit ? desc->volinit : 65535);
chip->balance = v4l2_ctrl_new_std(&chip->hdl,
&tvaudio_ctrl_ops, V4L2_CID_AUDIO_BALANCE,
0, 65535, 65535 / 100, 32768);
v4l2_ctrl_cluster(2, &chip->volume);
}
}
if (desc->flags & CHIP_HAS_BASSTREBLE) {
if (!desc->bassfunc || !desc->treblefunc) {
/* This shouldn't be happen. Warn user, but keep working
without bass/treble controls
*/
v4l2_info(sd, "bass/treble callbacks undefined!\n");
desc->flags &= ~CHIP_HAS_BASSTREBLE;
} else {
v4l2_ctrl_new_std(&chip->hdl,
&tvaudio_ctrl_ops, V4L2_CID_AUDIO_BASS,
0, 65535, 65535 / 100,
desc->bassinit ? desc->bassinit : 32768);
v4l2_ctrl_new_std(&chip->hdl,
&tvaudio_ctrl_ops, V4L2_CID_AUDIO_TREBLE,
0, 65535, 65535 / 100,
desc->trebleinit ? desc->trebleinit : 32768);
}
}
sd->ctrl_handler = &chip->hdl;
if (chip->hdl.error) {
int err = chip->hdl.error;
v4l2_ctrl_handler_free(&chip->hdl);
return err;
}
/* set controls to the default values */
v4l2_ctrl_handler_setup(&chip->hdl);
chip->thread = NULL;
timer_setup(&chip->wt, chip_thread_wake, 0);
if (desc->flags & CHIP_NEED_CHECKMODE) {
if (!desc->getrxsubchans || !desc->setaudmode) {
/* This shouldn't be happen. Warn user, but keep working
without kthread
*/
v4l2_info(sd, "set/get mode callbacks undefined!\n");
return 0;
}
/* start async thread */
chip->thread = kthread_run(chip_thread, chip, "%s",
client->name);
if (IS_ERR(chip->thread)) {
v4l2_warn(sd, "failed to create kthread\n");
chip->thread = NULL;
}
}
return 0;
}
static int tvaudio_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct CHIPSTATE *chip = to_state(sd);
del_timer_sync(&chip->wt);
if (chip->thread) {
/* shutdown async thread */
kthread_stop(chip->thread);
chip->thread = NULL;
}
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&chip->hdl);
return 0;
}
/* This driver supports many devices and the idea is to let the driver
detect which device is present. So rather than listing all supported
devices here, we pretend to support a single, fake device type. */
static const struct i2c_device_id tvaudio_id[] = {
{ "tvaudio", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tvaudio_id);
static struct i2c_driver tvaudio_driver = {
.driver = {
.name = "tvaudio",
},
.probe = tvaudio_probe,
.remove = tvaudio_remove,
.id_table = tvaudio_id,
};
module_i2c_driver(tvaudio_driver);
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