/*
* programming the msp34* sound processor family
*
* (c) 1997,1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
*
* what works and what doesn't:
*
* AM mono
* probably doesn't (untested)
*
* FM-mono
* should work. FM stereo modes are backward-compatible to mono.
* Therefore FM mono should always be available.
*
* FM stereo (B/G, used in Germany)
* should work, with autodetect
*
* FM stereo (satellite)
* should work, no autodetect (i.e. default is mono, but you can
* switch to stereo -- untested)
*
* NICAM (B/G, used in UK, Scandinavia and Spain)
* should work, with autodetect. Support for NICAM was added by
* Pekka Pietikainen <pp@netppl.fi>
*
*
* TODO:
* - better SAT support
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/malloc.h>
/* #include <asm/smp_lock.h> */
/* kernel_thread */
#define __KERNEL_SYSCALLS__
#include <linux/unistd.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include "msp3400.h"
/* sound mixer stuff */
#include <linux/config.h>
#if LINUX_VERSION_CODE > 0x020140 /* need modular sound driver */
# if defined(CONFIG_SOUND) || defined(CONFIG_SOUND_MODULE)
# define REGISTER_MIXER 1
# endif
#endif
int debug = 0; /* insmod parameter */
struct msp3400c {
struct i2c_bus *bus;
int nicam;
int mode;
int norm;
int stereo;
int mixer;
int left, right; /* volume */
int bass, treble;
/* thread */
struct task_struct *thread;
struct semaphore *wait;
struct semaphore *notify;
int active,restart,rmmod;
int watch_stereo;
struct timer_list wake_stereo;
};
#define VIDEO_MODE_RADIO 16 /* norm magic for radio mode */
/* ---------------------------------------------------------------------- */
#define dprintk if (debug) printk
MODULE_PARM(debug,"i");
/* ---------------------------------------------------------------------- */
#define I2C_MSP3400C 0x80
#define I2C_MSP3400C_DEM 0x10
#define I2C_MSP3400C_DFP 0x12
/* ----------------------------------------------------------------------- */
/* functions for talking to the MSP3400C Sound processor */
static int msp3400c_reset(struct i2c_bus *bus)
{
int ret = 0;
mdelay(2);
i2c_start(bus);
i2c_sendbyte(bus, I2C_MSP3400C,2000);
i2c_sendbyte(bus, 0x00,0);
i2c_sendbyte(bus, 0x80,0);
i2c_sendbyte(bus, 0x00,0);
i2c_stop(bus);
mdelay(2);
i2c_start(bus);
if (0 != i2c_sendbyte(bus, I2C_MSP3400C,2000) ||
0 != i2c_sendbyte(bus, 0x00,0) ||
0 != i2c_sendbyte(bus, 0x00,0) ||
0 != i2c_sendbyte(bus, 0x00,0)) {
ret = -1;
printk(KERN_ERR "msp3400: chip reset failed, penguin on i2c bus?\n");
}
i2c_stop(bus);
mdelay(2);
return ret;
}
static int
msp3400c_read(struct i2c_bus *bus, int dev, int addr)
{
int ret=0;
short val = 0;
i2c_start(bus);
if (0 != i2c_sendbyte(bus, I2C_MSP3400C,2000) ||
0 != i2c_sendbyte(bus, dev+1, 0) ||
0 != i2c_sendbyte(bus, addr >> 8, 0) ||
0 != i2c_sendbyte(bus, addr & 0xff, 0)) {
ret = -1;
} else {
i2c_start(bus);
if (0 != i2c_sendbyte(bus, I2C_MSP3400C+1,2000)) {
ret = -1;
} else {
val |= (int)i2c_readbyte(bus,0) << 8;
val |= (int)i2c_readbyte(bus,1);
}
}
i2c_stop(bus);
if (-1 == ret) {
printk(KERN_WARNING "msp3400: I/O error, trying reset (read %s 0x%x)\n",
(dev == I2C_MSP3400C_DEM) ? "Demod" : "Audio", addr);
msp3400c_reset(bus);
}
return val;
}
static int
msp3400c_write(struct i2c_bus *bus, int dev, int addr, int val)
{
int ret = 0;
i2c_start(bus);
if (0 != i2c_sendbyte(bus, I2C_MSP3400C,2000) ||
0 != i2c_sendbyte(bus, dev, 0) ||
0 != i2c_sendbyte(bus, addr >> 8, 0) ||
0 != i2c_sendbyte(bus, addr & 0xff, 0) ||
0 != i2c_sendbyte(bus, val >> 8, 0) ||
0 != i2c_sendbyte(bus, val & 0xff, 0))
ret = -1;
i2c_stop(bus);
if (-1 == ret) {
printk(KERN_WARNING "msp3400: I/O error, trying reset (write %s 0x%x)\n",
(dev == I2C_MSP3400C_DEM) ? "Demod" : "Audio", addr);
msp3400c_reset(bus);
}
return ret;
}
/* ------------------------------------------------------------------------ */
/* This macro is allowed for *constants* only, gcc must calculate it
at compile time. Remember -- no floats in kernel mode */
#define MSP_CARRIER(freq) ((int)((float)(freq/18.432)*(1<<24)))
#define MSP_MODE_AM_DETECT 0
#define MSP_MODE_FM_RADIO 2
#define MSP_MODE_FM_TERRA 3
#define MSP_MODE_FM_SAT 4
#define MSP_MODE_FM_NICAM1 5
#define MSP_MODE_FM_NICAM2 6
static struct MSP_INIT_DATA_DEM {
int fir1[6];
int fir2[6];
int cdo1;
int cdo2;
int ad_cv;
int mode_reg;
int dfp_src;
int dfp_matrix;
} msp_init_data[] = {
/* AM (for carrier detect / msp3400) */
{ { 75, 19, 36, 35, 39, 40 }, { 75, 19, 36, 35, 39, 40 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0500, 0x0020, 0x3000},
/* AM (for carrier detect / msp3410) */
{ { -1, -1, -8, 2, 59, 126 }, { -1, -1, -8, 2, 59, 126 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0100, 0x0020, 0x3000},
/* FM Radio */
{ { -8, -8, 4, 6, 78, 107 }, { -8, -8, 4, 6, 78, 107 },
MSP_CARRIER(10.7), MSP_CARRIER(10.7),
0x00d0, 0x0480, 0x0020, 0x3002 },
/* Terrestial FM-mono */
{ { 3, 18, 27, 48, 66, 72 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0480, 0x0030, 0x3000},
/* Sat FM-mono */
{ { 1, 9, 14, 24, 33, 37 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(6.5), MSP_CARRIER(6.5),
0x00c6, 0x0480, 0x0000, 0x3000},
/* NICAM B/G, D/K */
{ { -2, -8, -10, 10, 50, 86 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0040, 0x0120, 0x3000},
/* NICAM I */
{ { 2, 4, -6, -4, 40, 94 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0040, 0x0120, 0x3000},
};
struct CARRIER_DETECT {
int cdo;
char *name;
};
static struct CARRIER_DETECT carrier_detect_main[] = {
/* main carrier */
{ MSP_CARRIER(4.5), "4.5 NTSC" },
{ MSP_CARRIER(5.5), "5.5 PAL B/G" },
{ MSP_CARRIER(6.0), "6.0 PAL I" },
{ MSP_CARRIER(6.5), "6.5 PAL SAT / SECAM" }
};
static struct CARRIER_DETECT carrier_detect_55[] = {
/* PAL B/G */
{ MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
{ MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
};
static struct CARRIER_DETECT carrier_detect_65[] = {
/* PAL SAT / SECAM */
{ MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
{ MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
{ MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
};
#define CARRIER_COUNT(x) (sizeof(x)/sizeof(struct CARRIER_DETECT))
/* ------------------------------------------------------------------------ */
static void msp3400c_setcarrier(struct i2c_bus *bus, int cdo1, int cdo2)
{
msp3400c_write(bus,I2C_MSP3400C_DEM, 0x0093, cdo1 & 0xfff);
msp3400c_write(bus,I2C_MSP3400C_DEM, 0x009b, cdo1 >> 12);
msp3400c_write(bus,I2C_MSP3400C_DEM, 0x00a3, cdo2 & 0xfff);
msp3400c_write(bus,I2C_MSP3400C_DEM, 0x00ab, cdo2 >> 12);
}
static void msp3400c_setvolume(struct i2c_bus *bus, int left, int right)
{
int vol,val,balance;
vol = (left > right) ? left : right;
val = (vol * 0x73 / 65535) << 8;
balance = 0;
if (vol > 0)
balance = ((right-left) * 127) / vol;
dprintk("msp3400: setvolume: %d:%d 0x%02x 0x%02x\n",
left,right,val>>8,balance);
msp3400c_write(bus,I2C_MSP3400C_DFP, 0x0000, val); /* loudspeaker */
msp3400c_write(bus,I2C_MSP3400C_DFP, 0x0006, val); /* headphones */
/* scart - on/off only */
msp3400c_write(bus,I2C_MSP3400C_DFP, 0x0007, val ? 0x4000 : 0);
msp3400c_write(bus,I2C_MSP3400C_DFP, 0x0001, balance << 8);
}
static void msp3400c_setbass(struct i2c_bus *bus, int bass)
{
int val = ((bass-32768) * 0x60 / 65535) << 8;
dprintk("msp3400: setbass: %d 0x%02x\n",bass, val>>8);
msp3400c_write(bus,I2C_MSP3400C_DFP, 0x0002, val); /* loudspeaker */
}
static void msp3400c_settreble(struct i2c_bus *bus, int treble)
{
int val = ((treble-32768) * 0x60 / 65535) << 8;
dprintk("msp3400: settreble: %d 0x%02x\n",treble, val>>8);
msp3400c_write(bus,I2C_MSP3400C_DFP, 0x0003, val); /* loudspeaker */
}
static void msp3400c_setmode(struct msp3400c *msp, int type)
{
int i;
dprintk("msp3400: setmode: %d\n",type);
msp->mode = type;
msp->stereo = VIDEO_SOUND_MONO;
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x00bb, /* ad_cv */
msp_init_data[type].ad_cv);
for (i = 5; i >= 0; i--) /* fir 1 */
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x0001,
msp_init_data[type].fir1[i]);
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x0005, 0x0004); /* fir 2 */
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x0005, 0x0040);
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x0005, 0x0000);
for (i = 5; i >= 0; i--)
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x0005,
msp_init_data[type].fir2[i]);
msp3400c_write(msp->bus,I2C_MSP3400C_DEM, 0x0083, /* MODE_REG */
msp_init_data[type].mode_reg);
msp3400c_setcarrier(msp->bus, msp_init_data[type].cdo1,
msp_init_data[type].cdo2);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0008,
msp_init_data[type].dfp_src);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0009,
msp_init_data[type].dfp_src);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000a,
msp_init_data[type].dfp_src);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000e,
msp_init_data[type].dfp_matrix);
if (msp->nicam) {
/* msp3410 needs some more initialization */
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0010, 0x3000);
}
}
static void msp3400c_setstereo(struct msp3400c *msp, int mode)
{
int nicam=0; /* channel source: FM/AM or nicam */
/* switch demodulator */
switch (msp->mode) {
case MSP_MODE_FM_TERRA:
dprintk("msp3400: B/G setstereo: %d\n",mode);
msp->stereo = mode;
msp3400c_setcarrier(msp->bus,MSP_CARRIER(5.7421875),MSP_CARRIER(5.5));
switch (mode) {
case VIDEO_SOUND_STEREO:
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000e, 0x3001);
break;
case VIDEO_SOUND_MONO:
case VIDEO_SOUND_LANG1:
case VIDEO_SOUND_LANG2:
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000e, 0x3000);
break;
}
break;
case MSP_MODE_FM_SAT:
dprintk("msp3400: sat setstereo: %d\n",mode);
msp->stereo = mode;
switch (mode) {
case VIDEO_SOUND_MONO:
msp3400c_setcarrier(msp->bus, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
break;
case VIDEO_SOUND_STEREO:
msp3400c_setcarrier(msp->bus, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
break;
case VIDEO_SOUND_LANG1:
msp3400c_setcarrier(msp->bus, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
break;
case VIDEO_SOUND_LANG2:
msp3400c_setcarrier(msp->bus, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
break;
}
break;
case MSP_MODE_FM_NICAM1:
dprintk("msp3400: NICAM1 setstereo: %d\n",mode);
msp->stereo = mode;
msp3400c_setcarrier(msp->bus,MSP_CARRIER(5.85),MSP_CARRIER(5.5));
nicam=0x0100;
break;
default:
/* can't do stereo - abort here */
return;
}
/* switch audio */
switch (mode) {
case VIDEO_SOUND_STEREO:
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0008,0x0020|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0009,0x0020|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000a,0x0020|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0005,0x4000);
break;
case VIDEO_SOUND_MONO:
case VIDEO_SOUND_LANG1:
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0008,0x0000|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0009,0x0000|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000a,0x0000|nicam);
break;
case VIDEO_SOUND_LANG2:
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0008,0x0010|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0009,0x0010|nicam);
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x000a,0x0010|nicam);
break;
}
}
/* ----------------------------------------------------------------------- */
struct REGISTER_DUMP {
int addr;
char *name;
};
struct REGISTER_DUMP d1[] = {
{ 0x007e, "autodetect" },
{ 0x0023, "C_AD_BITS " },
{ 0x0038, "ADD_BITS " },
{ 0x003e, "CIB_BITS " },
{ 0x0057, "ERROR_RATE" },
};
/*
* A kernel thread for msp3400 control -- we don't want to block the
* in the ioctl while doing the sound carrier & stereo detect
*/
static void msp3400c_stereo_wake(unsigned long data)
{
struct msp3400c *msp = (struct msp3400c*)data; /* XXX alpha ??? */
if (!msp->active)
up(msp->wait);
}
static int msp3400c_thread(void *data)
{
unsigned long flags;
struct msp3400c *msp = data;
struct semaphore sem = MUTEX_LOCKED;
struct CARRIER_DETECT *cd;
int count, max1,max2,val1,val2, val,this;
int newstereo;
/* lock_kernel(); */
exit_mm(current);
current->session = 1;
current->pgrp = 1;
sigfillset(¤t->blocked);
current->fs->umask = 0;
strcpy(current->comm,"msp3400");
msp->wait = &sem;
msp->thread = current;
/* unlock_kernel(); */
dprintk("msp3400: thread: start\n");
if(msp->notify != NULL)
up(msp->notify);
for (;;) {
if (msp->rmmod)
goto done;
dprintk("msp3400: thread: sleep\n");
down_interruptible(&sem);
dprintk("msp3400: thread: wakeup\n");
if (msp->rmmod || signal_pending(current))
goto done;
if (VIDEO_MODE_RADIO == msp->norm)
continue; /* nothing to do */
msp->active = 1;
if (msp->watch_stereo) {
/* do that stereo/multilang handling */
LOCK_I2C_BUS(msp->bus);
newstereo = msp->stereo;
switch (msp->mode) {
case MSP_MODE_FM_TERRA:
val = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x18);
dprintk("msp3400: stereo detect register: %d\n",val);
if (val > 4096) {
newstereo = VIDEO_SOUND_STEREO;
} else if (val < -4096) {
newstereo = VIDEO_SOUND_LANG1;
} else {
newstereo = VIDEO_SOUND_MONO;
}
break;
case MSP_MODE_FM_NICAM1:
val = msp3400c_read(msp->bus, I2C_MSP3400C_DEM, 0x23);
switch ((val & 0x1e) >> 1) {
case 0:
case 8:
newstereo = VIDEO_SOUND_STEREO;
break;
default:
newstereo = VIDEO_SOUND_MONO;
break;
}
break;
}
if (msp->stereo != newstereo) {
dprintk("msp3400: watch: stereo %d ==> %d\n",
msp->stereo,newstereo);
msp3400c_setstereo(msp,newstereo);
}
UNLOCK_I2C_BUS(msp->bus);
if (msp->watch_stereo) {
del_timer(&msp->wake_stereo);
msp->wake_stereo.expires = jiffies + 5*HZ;
add_timer(&msp->wake_stereo);
}
msp->active = 0;
continue;
}
restart:
LOCK_I2C_BUS(msp->bus);
msp3400c_setvolume(msp->bus, 0, 0);
msp3400c_setmode(msp, MSP_MODE_AM_DETECT);
val1 = val2 = max1 = max2 = 0;
del_timer(&msp->wake_stereo);
msp->watch_stereo = 0;
/* carrier detect pass #1 -- main carrier */
cd = carrier_detect_main; count = CARRIER_COUNT(carrier_detect_main);
for (this = 0; this < count; this++) {
msp3400c_setcarrier(msp->bus, cd[this].cdo,cd[this].cdo);
UNLOCK_I2C_BUS(msp->bus);
current->state = TASK_INTERRUPTIBLE;
current->timeout = jiffies + HZ/25;
schedule();
if (signal_pending(current))
goto done;
if (msp->restart) {
msp->restart = 0;
goto restart;
}
LOCK_I2C_BUS(msp->bus);
val = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1b);
if (val1 < val)
val1 = val, max1 = this;
dprintk("msp3400: carrier1 val: %5d / %s\n", val,cd[this].name);
}
/* carrier detect pass #2 -- second (stereo) carrier */
switch (max1) {
case 1: /* 5.5 */
cd = carrier_detect_55; count = CARRIER_COUNT(carrier_detect_55);
break;
case 3: /* 6.5 */
cd = carrier_detect_65; count = CARRIER_COUNT(carrier_detect_65);
break;
case 0: /* 4.5 */
case 2: /* 6.0 */
default:
cd = NULL; count = 0;
break;
}
for (this = 0; this < count; this++) {
msp3400c_setcarrier(msp->bus, cd[this].cdo,cd[this].cdo);
UNLOCK_I2C_BUS(msp->bus);
current->state = TASK_INTERRUPTIBLE;
current->timeout = jiffies + HZ/25;
schedule();
if (signal_pending(current))
goto done;
if (msp->restart) {
msp->restart = 0;
goto restart;
}
LOCK_I2C_BUS(msp->bus);
val = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1b);
if (val2 < val)
val2 = val, max2 = this;
dprintk("msp3400: carrier2 val: %5d / %s\n", val,cd[this].name);
}
/* program the msp3400 according to the results */
switch (max1) {
case 0: /* 4.5 */
case 1: /* 5.5 */
msp3400c_setmode(msp, MSP_MODE_FM_TERRA);
msp3400c_setcarrier(msp->bus, carrier_detect_main[max1].cdo,
carrier_detect_main[max1].cdo);
if (max2 == 0) {
/* B/G FM-stereo */
msp3400c_setstereo(msp, VIDEO_SOUND_MONO);
msp->watch_stereo = 1;
}
if (max2 == 1 && msp->nicam) {
/* B/G NICAM */
msp3400c_setmode(msp, MSP_MODE_FM_NICAM1);
/* msp3400c_write(msp->bus, I2C_MSP3400C_DFP, 0x21, 0x01); */
msp3400c_setcarrier(msp->bus, MSP_CARRIER(5.85),
MSP_CARRIER(5.5));
msp->watch_stereo = 1;
}
break;
case 2: /* 6.0 */
case 3: /* 6.5 */
default:
msp3400c_setmode(msp, MSP_MODE_FM_TERRA);
msp3400c_setcarrier(msp->bus, carrier_detect_main[max1].cdo,
carrier_detect_main[max1].cdo);
msp3400c_setstereo(msp, VIDEO_SOUND_STEREO);
break;
}
/* unmute */
msp3400c_setvolume(msp->bus, msp->left, msp->right);
UNLOCK_I2C_BUS(msp->bus);
if (msp->watch_stereo) {
del_timer(&msp->wake_stereo);
msp->wake_stereo.expires = jiffies + HZ;
add_timer(&msp->wake_stereo);
}
msp->active = 0;
}
done:
dprintk("msp3400: thread: exit\n");
msp->wait = NULL;
msp->active = 0;
msp->thread = NULL;
if(msp->notify != NULL)
up(msp->notify);
return 0;
}
#if 0 /* not finished yet */
static int msp3410d_thread(void *data)
{
unsigned long flags;
struct msp3400c *msp = data;
struct semaphore sem = MUTEX_LOCKED;
int i, val;
/* lock_kernel(); */
exit_mm(current);
current->session = 1;
current->pgrp = 1;
sigfillset(¤t->blocked);
current->fs->umask = 0;
strcpy(current->comm,"msp3410 (nicam)");
msp->wait = &sem;
msp->thread = current;
/* unlock_kernel(); */
dprintk("msp3410: thread: start\n");
if(msp->notify != NULL)
up(msp->notify);
for (;;) {
if (msp->rmmod)
goto done;
dprintk("msp3410: thread: sleep\n");
down_interruptible(&sem);
dprintk("msp3410: thread: wakeup\n");
if (msp->rmmod)
goto done;
if (VIDEO_MODE_RADIO == msp->norm)
continue; /* nothing to do */
msp->active = 1;
restart:
LOCK_I2C_BUS(msp->bus);
/* mute */
msp3400c_setvolume(msp->bus, 0);
/* quick & dirty hack:
get the audio proccessor into some useful state */
msp3400c_setmode(msp, MSP_MODE_FM_NICAM1);
/* kick autodetect */
msp3400c_write(msp->bus, I2C_MSP3400C_DFP, 0x20, 0x01);
msp3400c_write(msp->bus, I2C_MSP3400C_DFP, 0x21, 0x01);
UNLOCK_I2C_BUS(msp->bus);
/* wait 1 sec */
current->state = TASK_INTERRUPTIBLE;
current->timeout = jiffies + HZ;
schedule();
if (signal_pending(current))
goto done;
if (msp->restart) {
msp->restart = 0;
goto restart;
}
LOCK_I2C_BUS(msp->bus);
/* debug register dump */
for (i = 0; i < sizeof(d1)/sizeof(struct REGISTER_DUMP); i++) {
val = msp3400c_read(msp->bus,I2C_MSP3400C_DEM,d1[i].addr);
printk(KERN_DEBUG "msp3400: %s = 0x%x\n",d1[i].name,val);
}
/* unmute */
msp3400c_setvolume(msp->bus, msp->volume);
UNLOCK_I2C_BUS(msp->bus);
msp->active = 0;
}
done:
dprintk("msp3410: thread: exit\n");
msp->wait = NULL;
msp->active = 0;
msp->thread = NULL;
if(msp->notify != NULL)
up(msp->notify);
return 0;
}
#endif
/* ----------------------------------------------------------------------- */
/* mixer stuff -- with the modular sound driver in 2.1.x we can easily */
/* register the msp3400 as mixer device */
#ifdef REGISTER_MIXER
#include <linux/soundcard.h>
#include <../drivers/sound/sound_config.h>
#include <../drivers/sound/dev_table.h>
static int mix_to_v4l(int i)
{
int r;
r = ((i & 0xff) * 65536 + 50) / 100;
if (r > 65535) r = 65535;
if (r < 0) r = 0;
return r;
}
static int v4l_to_mix(int i)
{
int r;
r = (i * 100 + 32768) / 65536;
if (r > 100) r = 100;
if (r < 0) r = 0;
return r | (r << 8);
}
static int v4l_to_mix2(int l, int r)
{
r = (r * 100 + 32768) / 65536;
if (r > 100) r = 100;
if (r < 0) r = 0;
l = (l * 100 + 32768) / 65536;
if (l > 100) l = 100;
if (l < 0) l = 0;
return (r << 8) | l;
}
static int msp3400c_mixer_ioctl(int dev, unsigned int cmd, caddr_t arg)
{
struct msp3400c *msp = mixer_devs[dev]->devc;
unsigned long flags;
int ret,val = 0;
if (_SIOC_DIR(cmd) & _SIOC_WRITE)
if (get_user(val, (int *)arg))
return -EFAULT;
switch (cmd) {
case MIXER_READ(SOUND_MIXER_RECMASK):
case MIXER_READ(SOUND_MIXER_CAPS):
case MIXER_READ(SOUND_MIXER_RECSRC):
case MIXER_WRITE(SOUND_MIXER_RECSRC):
ret = 0;
break;
case MIXER_READ(SOUND_MIXER_STEREODEVS):
ret = SOUND_MASK_VOLUME;
break;
case MIXER_READ(SOUND_MIXER_DEVMASK):
ret = SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE;
break;
case MIXER_WRITE(SOUND_MIXER_VOLUME):
msp->left = mix_to_v4l(val);
msp->right = mix_to_v4l(val >> 8);
LOCK_I2C_BUS(msp->bus);
msp3400c_setvolume(msp->bus,msp->left,msp->right);
UNLOCK_I2C_BUS(msp->bus);
/* fall */
case MIXER_READ(SOUND_MIXER_VOLUME):
ret = v4l_to_mix2(msp->left, msp->right);
break;
case MIXER_WRITE(SOUND_MIXER_BASS):
msp->bass = mix_to_v4l(val);
LOCK_I2C_BUS(msp->bus);
msp3400c_setbass(msp->bus,msp->bass);
UNLOCK_I2C_BUS(msp->bus);
/* fall */
case MIXER_READ(SOUND_MIXER_BASS):
ret = v4l_to_mix(msp->bass);
break;
case MIXER_WRITE(SOUND_MIXER_TREBLE):
msp->treble = mix_to_v4l(val);
LOCK_I2C_BUS(msp->bus);
msp3400c_settreble(msp->bus,msp->treble);
UNLOCK_I2C_BUS(msp->bus);
/* fall */
case MIXER_READ(SOUND_MIXER_TREBLE):
ret = v4l_to_mix(msp->treble);
break;
default:
return -EINVAL;
}
if (put_user(ret, (int *)arg))
return -EFAULT;
return 0;
}
struct mixer_operations msp3400c_mixer = {
"video4linux",
"TV card sound (msp3400)",
msp3400c_mixer_ioctl
};
static int msp3400c_mixer_init(struct msp3400c *msp)
{
int m;
msp->mixer = m = sound_alloc_mixerdev();
if (m == -1)
return -1;
mixer_devs[m] = (struct mixer_operations *)
kmalloc(sizeof(struct mixer_operations), GFP_KERNEL);
if (mixer_devs[m] == NULL) {
printk(KERN_ERR "msp3400c: can't allocate memory\n");
sound_unload_mixerdev(m);
return -1;
}
memcpy(mixer_devs[m],&msp3400c_mixer,sizeof(struct mixer_operations));
mixer_devs[m]->devc = msp;
return 0;
}
static int msp3400c_mixer_close(struct msp3400c *msp)
{
int m = msp->mixer;
if (m != -1 ) {
sound_unload_mixerdev(m);
kfree(mixer_devs[m]);
}
return 0;
}
#endif
/* ----------------------------------------------------------------------- */
static int msp3400c_attach(struct i2c_device *device)
{
unsigned long flags;
struct semaphore sem = MUTEX_LOCKED;
struct msp3400c *msp;
int rev1,rev2;
device->data = msp = kmalloc(sizeof(struct msp3400c),GFP_KERNEL);
if (NULL == msp)
return -ENOMEM;
memset(msp,0,sizeof(struct msp3400c));
msp->bus = device->bus;
msp->left = 65535;
msp->right = 65535;
msp->bass = 32768;
msp->treble = 32768;
LOCK_I2C_BUS(msp->bus);
if (-1 == msp3400c_reset(msp->bus)) {
UNLOCK_I2C_BUS(msp->bus);
kfree(msp);
return -EIO;
}
msp3400c_setmode(msp, MSP_MODE_FM_TERRA);
msp3400c_setvolume(msp->bus, msp->left, msp->right);
msp3400c_setbass(msp->bus, msp->bass);
msp3400c_settreble(msp->bus, msp->treble);
rev1 = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1e);
rev2 = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1f);
#if 0
/* this will turn on a 1kHz beep - might be useful for debugging... */
msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0014, 0x1040);
#endif
UNLOCK_I2C_BUS(msp->bus);
sprintf(device->name,"MSP34%02d%c-%c%d",
(rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f);
msp->nicam = (((rev2>>8)&0xff) == 10) ? 1 : 0;
/* timer for stereo checking */
msp->wake_stereo.function = msp3400c_stereo_wake;
msp->wake_stereo.data = (unsigned long)msp;
/* startup control thread */
MOD_INC_USE_COUNT;
msp->notify = &sem;
kernel_thread(msp3400c_thread, (void *)msp, 0);
down(&sem);
msp->notify = NULL;
if (!msp->active)
up(msp->wait);
printk(KERN_INFO "msp3400: init: chip=%s",device->name);
if (msp->nicam)
printk(", has NICAM support");
#ifdef REGISTER_MIXER
if (0 == msp3400c_mixer_init(msp))
printk(", registered as sound mixer");
#endif
printk("\n");
return 0;
}
static int msp3400c_detach(struct i2c_device *device)
{
unsigned long flags;
struct semaphore sem = MUTEX_LOCKED;
struct msp3400c *msp = (struct msp3400c*)device->data;
#ifdef REGISTER_MIXER
msp3400c_mixer_close(msp);
#endif
/* shutdown control thread */
del_timer(&msp->wake_stereo);
if (msp->thread)
{
msp->notify = &sem;
msp->rmmod = 1;
if (!msp->active)
up(msp->wait);
down(&sem);
msp->notify = NULL;
}
LOCK_I2C_BUS(msp->bus);
msp3400c_reset(msp->bus);
UNLOCK_I2C_BUS(msp->bus);
kfree(msp);
MOD_DEC_USE_COUNT;
return 0;
}
static int msp3400c_command(struct i2c_device *device,
unsigned int cmd, void *arg)
{
unsigned long flags;
struct msp3400c *msp = (struct msp3400c*)device->data;
int *iarg = (int*)arg;
switch (cmd) {
case MSP_SET_RADIO:
msp->norm = VIDEO_MODE_RADIO;
msp->watch_stereo=0;
del_timer(&msp->wake_stereo);
LOCK_I2C_BUS(msp->bus);
msp3400c_setmode(msp,MSP_MODE_FM_RADIO);
msp3400c_setcarrier(msp->bus, MSP_CARRIER(10.7),MSP_CARRIER(10.7));
UNLOCK_I2C_BUS(msp->bus);
break;
case MSP_SET_TVNORM:
msp->norm = *iarg;
break;
case MSP_NEWCHANNEL:
msp->watch_stereo=0;
del_timer(&msp->wake_stereo);
if (!msp->active)
up(msp->wait);
else
msp->restart = 1;
break;
case MSP_GET_VOLUME:
*iarg = (msp->left > msp->right) ? msp->left : msp->right;
break;
case MSP_SET_VOLUME:
msp->left = msp->right = *iarg;
LOCK_I2C_BUS(msp->bus);
msp3400c_setvolume(msp->bus,msp->left, msp->right);
UNLOCK_I2C_BUS(msp->bus);
break;
case MSP_GET_BASS:
*iarg = msp->bass;
break;
case MSP_SET_BASS:
msp->bass = *iarg;
LOCK_I2C_BUS(msp->bus);
msp3400c_setbass(msp->bus,msp->bass);
UNLOCK_I2C_BUS(msp->bus);
break;
case MSP_GET_TREBLE:
*iarg = msp->treble;
break;
case MSP_SET_TREBLE:
msp->treble = *iarg;
LOCK_I2C_BUS(msp->bus);
msp3400c_settreble(msp->bus,msp->treble);
UNLOCK_I2C_BUS(msp->bus);
break;
case MSP_GET_STEREO:
*iarg = msp->stereo;
break;
case MSP_SET_STEREO:
if (*iarg) {
msp->watch_stereo=0;
del_timer(&msp->wake_stereo);
LOCK_I2C_BUS(msp->bus);
msp3400c_setstereo(msp,*iarg);
UNLOCK_I2C_BUS(msp->bus);
}
break;
case MSP_GET_DC:
LOCK_I2C_BUS(msp->bus);
*iarg = (int)msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1b) +
(int)msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1c);
UNLOCK_I2C_BUS(msp->bus);
break;
default:
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
struct i2c_driver i2c_driver_msp = {
"msp3400", /* name */
I2C_DRIVERID_MSP3400, /* ID */
I2C_MSP3400C, I2C_MSP3400C, /* addr range */
msp3400c_attach,
msp3400c_detach,
msp3400c_command
};
EXPORT_NO_SYMBOLS;
#ifdef MODULE
int init_module(void)
#else
int msp3400c_init(void)
#endif
{
i2c_register_driver(&i2c_driver_msp);
return 0;
}
#ifdef MODULE
void cleanup_module(void)
{
i2c_unregister_driver(&i2c_driver_msp);
}
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/