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linux/drivers/media/i2c/tvaudio.c
Mauro Carvalho Chehab f8a7647d31 media: i2c: fix several typos 
Use codespell to fix lots of typos over frontends.

Manually verified to avoid false-positives.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-03-01 09:29:58 -05:00

2104 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 control 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 output, 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)
strscpy(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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