msp3400.c
上传用户:aoeyumen
上传日期:2007-01-06
资源大小:3329k
文件大小:32k
- /*
- * programming the msp34* sound processor family
- *
- * (c) 1997,1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
- *
- * what works and what doesn't:
- *
- * AM-Mono
- * probably doesn't (untested)
- *
- * FM-Mono
- * should work. The stereo modes are backward compatible to FM-mono,
- * therefore FM-Mono should be allways 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
- *
- *
- * 980623 Thomas Sailer (sailer@ife.ee.ethz.ch)
- * using soundcore instead of OSS
- *
- */
- #include <linux/module.h>
- #include <linux/version.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>
- #ifdef __SMP__
- #include <asm/pgtable.h>
- #include <linux/smp_lock.h>
- #endif
- /* 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
- #undef REGISTER_MIXER
- static int debug = 0; /* insmod parameter */
- struct msp3400c {
- struct i2c_bus *bus;
- int nicam;
- int mode;
- int norm;
- int stereo;
- int main, second; /* sound carrier */
- int left, right; /* volume */
- int bass, treble;
- /* thread */
- struct task_struct *thread;
- struct wait_queue *wq;
- 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
- #if LINUX_VERSION_CODE < 0x020100
- /* 2.0.x */
- #define signal_pending(current) (current->signal & ~current->blocked)
- #define sigfillset(set)
- #define mdelay(x) udelay(1000*x)
- #else
- MODULE_PARM(debug,"i");
- #endif
- #if LINUX_VERSION_CODE < 0x02017f
- void schedule_timeout(int j)
- {
- current->timeout = jiffies + j;
- schedule();
- }
- #endif
- /* ---------------------------------------------------------------------- */
- #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, 0x3000 },
- /* Terrestial FM-mono + FM-stereo */
- { { 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(6.0), MSP_CARRIER(6.0),
- 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 D/K + 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(5.85), "5.85 PAL D/K NICAM" },
- { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
- { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
- { 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);
- msp3400c_write(bus,I2C_MSP3400C_DEM, 0x0056, 0); /*LOAD_REG_1/2*/
- }
- 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%02xn",
- 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%02xn",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%02xn",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: %dn",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_DEM, 0x0056, 0); /*LOAD_REG_1/2*/
- 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: FM setstereo: %dn",mode);
- msp->stereo = mode;
- msp3400c_setcarrier(msp->bus,msp->second,msp->main);
- 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: %dn",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:
- case MSP_MODE_FM_NICAM2:
- dprintk("msp3400: NICAM setstereo: %dn",mode);
- msp->stereo = mode;
- msp3400c_setcarrier(msp->bus,msp->second,msp->main);
- 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);
- #if 0
- msp3400c_write(msp->bus,I2C_MSP3400C_DFP, 0x0005,0x4000);
- #endif
- 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;
- }
- }
- static void
- msp3400c_print_mode(struct msp3400c *msp)
- {
- if (msp->main == msp->second) {
- printk("msp3400: mono sound carrier: %d.%03d MHzn",
- msp->main/910000,(msp->main/910)%1000);
- } else {
- printk("msp3400: main sound carrier: %d.%03d MHzn",
- msp->main/910000,(msp->main/910)%1000);
- }
- if (msp->mode == MSP_MODE_FM_NICAM1 ||
- msp->mode == MSP_MODE_FM_NICAM2)
- printk("msp3400: NICAM carrier : %d.%03d MHzn",
- msp->second/910000,(msp->second/910)%1000);
- if (msp->mode == MSP_MODE_FM_TERRA &&
- msp->main != msp->second) {
- printk("msp3400: FM-stereo carrier : %d.%03d MHzn",
- msp->second/910000,(msp->second/910)%1000);
- }
- }
- /* ----------------------------------------------------------------------- */
- 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 ??? */
- wake_up_interruptible(&msp->wq);
- }
- static int msp3400c_thread(void *data)
- {
- struct msp3400c *msp = data;
-
- struct CARRIER_DETECT *cd;
- int count, max1,max2,val1,val2, val,this;
- int newstereo;
- LOCK_FLAGS;
-
- #ifdef __SMP__
- lock_kernel();
- #endif
-
- exit_mm(current);
- current->session = 1;
- current->pgrp = 1;
- sigfillset(¤t->blocked);
- current->fs->umask = 0;
- strcpy(current->comm,"msp3400");
- msp->wq = NULL;
- msp->thread = current;
- #ifdef __SMP__
- unlock_kernel();
- #endif
- dprintk("msp3400: thread: startn");
- if(msp->notify != NULL)
- up(msp->notify);
-
- for (;;) {
- if (msp->rmmod)
- goto done;
- if (debug > 1)
- printk("msp3400: thread: sleepn");
- interruptible_sleep_on(&msp->wq);
- if (debug > 1)
- printk("msp3400: thread: wakeupn");
- 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: %dn",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:
- case MSP_MODE_FM_NICAM2:
- 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 ==> %dn",
- 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 = 0;
- max1 = max2 = -1;
- 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;
- schedule_timeout(HZ/25);
- 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 / %sn", 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;
- schedule_timeout(HZ/25);
- 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 / %sn", val,cd[this].name);
- }
- /* programm the msp3400 according to the results */
- msp->main = carrier_detect_main[max1].cdo;
- switch (max1) {
- case 1: /* 5.5 */
- if (max2 == 0) {
- /* B/G FM-stereo */
- msp->second = carrier_detect_55[max2].cdo;
- msp3400c_setmode(msp, MSP_MODE_FM_TERRA);
- msp3400c_setstereo(msp, VIDEO_SOUND_MONO);
- msp->watch_stereo = 1;
- } else if (max2 == 1 && msp->nicam) {
- /* B/G NICAM */
- msp->second = carrier_detect_55[max2].cdo;
- msp3400c_setmode(msp, MSP_MODE_FM_NICAM1);
- msp3400c_setcarrier(msp->bus, msp->second, msp->main);
- msp->watch_stereo = 1;
- } else {
- goto no_second;
- }
- break;
- case 2: /* 6.0 */
- /* PAL I NICAM */
- msp->second = MSP_CARRIER(6.552);
- msp3400c_setmode(msp, MSP_MODE_FM_NICAM2);
- msp3400c_setcarrier(msp->bus, msp->second, msp->main);
- msp->watch_stereo = 1;
- break;
- case 3: /* 6.5 */
- if (max2 == 1 || max2 == 2) {
- /* D/K FM-stereo */
- msp->second = carrier_detect_65[max2].cdo;
- msp3400c_setmode(msp, MSP_MODE_FM_TERRA);
- msp3400c_setstereo(msp, VIDEO_SOUND_MONO);
- msp->watch_stereo = 1;
- } else if (max2 == 0 && msp->nicam) {
- /* D/K NICAM */
- msp->second = carrier_detect_65[max2].cdo;
- msp3400c_setmode(msp, MSP_MODE_FM_NICAM1);
- msp3400c_setcarrier(msp->bus, msp->second, msp->main);
- msp->watch_stereo = 1;
- } else {
- goto no_second;
- }
- break;
- case 0: /* 4.5 */
- default:
- no_second:
- msp->second = carrier_detect_main[max1].cdo;
- msp3400c_setmode(msp, MSP_MODE_FM_TERRA);
- msp3400c_setcarrier(msp->bus, msp->second, msp->main);
- 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 + 2*HZ;
- add_timer(&msp->wake_stereo);
- }
- if (debug)
- msp3400c_print_mode(msp);
-
- msp->active = 0;
- }
- done:
- dprintk("msp3400: thread: exitn");
- 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: startn");
- if(msp->notify != NULL)
- up(msp->notify);
-
- for (;;) {
- if (msp->rmmod)
- goto done;
- dprintk("msp3410: thread: sleepn");
- down_interruptible(&sem);
- dprintk("msp3410: thread: wakeupn");
- 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%xn",d1[i].name,val);
- }
- /* unmute */
- msp3400c_setvolume(msp->bus, msp->volume);
- UNLOCK_I2C_BUS(msp->bus);
- msp->active = 0;
- }
- done:
- dprintk("msp3410: thread: exitn");
- 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/sound.h>
- #include <linux/soundcard.h>
- #include <asm/uaccess.h>
- static struct msp3400c *mspmix = NULL; /* ugly hack, should do something more sensible */
- static int mixer_num;
- static int mixer_modcnt = 0;
- static struct semaphore mixer_sem = MUTEX;
- 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(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
- {
- int ret,val = 0;
- LOCK_FLAGS;
- if (cmd == SOUND_MIXER_INFO) {
- mixer_info info;
- strncpy(info.id, "MSP3400", sizeof(info.id));
- strncpy(info.name, "MSP 3400", sizeof(info.name));
- info.modify_counter = mixer_modcnt;
- if (copy_to_user((void *)arg, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- if (cmd == SOUND_OLD_MIXER_INFO) {
- _old_mixer_info info;
- strncpy(info.id, "MSP3400", sizeof(info.id));
- strncpy(info.name, "MSP 3400", sizeof(info.name));
- if (copy_to_user((void *)arg, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- if (cmd == OSS_GETVERSION)
- return put_user(SOUND_VERSION, (int *)arg);
- if (_SIOC_DIR(cmd) & _SIOC_WRITE)
- if (get_user(val, (int *)arg))
- return -EFAULT;
-
- down(&mixer_sem);
- if (!mspmix) {
- up(&mixer_sem);
- return -ENODEV;
- }
- 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):
- mspmix->left = mix_to_v4l(val);
- mspmix->right = mix_to_v4l(val >> 8);
- LOCK_I2C_BUS(mspmix->bus);
- msp3400c_setvolume(mspmix->bus,mspmix->left,mspmix->right);
- UNLOCK_I2C_BUS(mspmix->bus);
- mixer_modcnt++;
- /* fall */
- case MIXER_READ(SOUND_MIXER_VOLUME):
- ret = v4l_to_mix2(mspmix->left, mspmix->right);
- break;
- case MIXER_WRITE(SOUND_MIXER_BASS):
- mspmix->bass = mix_to_v4l(val);
- LOCK_I2C_BUS(mspmix->bus);
- msp3400c_setbass(mspmix->bus,mspmix->bass);
- UNLOCK_I2C_BUS(mspmix->bus);
- mixer_modcnt++;
- /* fall */
- case MIXER_READ(SOUND_MIXER_BASS):
- ret = v4l_to_mix(mspmix->bass);
- break;
- case MIXER_WRITE(SOUND_MIXER_TREBLE):
- mspmix->treble = mix_to_v4l(val);
- LOCK_I2C_BUS(mspmix->bus);
- msp3400c_settreble(mspmix->bus,mspmix->treble);
- UNLOCK_I2C_BUS(mspmix->bus);
- mixer_modcnt++;
- /* fall */
- case MIXER_READ(SOUND_MIXER_TREBLE):
- ret = v4l_to_mix(mspmix->treble);
- break;
- default:
- up(&mixer_sem);
- return -EINVAL;
- }
- up(&mixer_sem);
- if (put_user(ret, (int *)arg))
- return -EFAULT;
- return 0;
- }
- static int
- msp3400c_mixer_open(struct inode *inode, struct file *file)
- {
- MOD_INC_USE_COUNT;
- return 0;
- }
- static int
- msp3400c_mixer_release(struct inode *inode, struct file *file)
- {
- MOD_DEC_USE_COUNT;
- return 0;
- }
- static loff_t
- msp3400c_mixer_llseek(struct file *file, loff_t offset, int origin)
- {
- return -ESPIPE;
- }
- static /*const*/ struct file_operations msp3400c_mixer_fops = {
- &msp3400c_mixer_llseek,
- NULL, /* read */
- NULL, /* write */
- NULL, /* readdir */
- NULL, /* poll */
- &msp3400c_mixer_ioctl,
- NULL, /* mmap */
- &msp3400c_mixer_open,
- NULL,
- &msp3400c_mixer_release,
- NULL, /* fsync */
- NULL, /* fasync */
- NULL, /* check_media_change */
- NULL, /* revalidate */
- NULL, /* lock */
- };
- #endif
- /* ----------------------------------------------------------------------- */
- static int msp3400c_attach(struct i2c_device *device)
- {
- struct semaphore sem = MUTEX_LOCKED;
- struct msp3400c *msp;
- int rev1,rev2;
- LOCK_FLAGS;
- 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);
- dprintk("msp3400: no chip foundn");
- return -1;
- }
-
- rev1 = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1e);
- rev2 = msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1f);
- if (0 == rev1 && 0 == rev2) {
- UNLOCK_I2C_BUS(msp->bus);
- kfree(msp);
- printk("msp3400: error while reading chip versionn");
- return -1;
- }
- 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);
-
- #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) != 00) ? 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->wq = NULL;
- msp->notify = &sem;
- kernel_thread(msp3400c_thread, (void *)msp, 0);
- down(&sem);
- msp->notify = NULL;
- wake_up_interruptible(&msp->wq);
- printk(KERN_INFO "msp3400: init: chip=%s",device->name);
- if (msp->nicam)
- printk(", has NICAM support");
- #ifdef REGISTER_MIXER
- down(&mixer_sem);
- mspmix = msp;
- up(&mixer_sem);
- #endif
- printk("n");
- return 0;
- }
- static int msp3400c_detach(struct i2c_device *device)
- {
- struct semaphore sem = MUTEX_LOCKED;
- struct msp3400c *msp = (struct msp3400c*)device->data;
- LOCK_FLAGS;
-
- #ifdef REGISTER_MIXER
- down(&mixer_sem);
- mspmix = NULL;
- up(&mixer_sem);
- #endif
- /* shutdown control thread */
- del_timer(&msp->wake_stereo);
- if (msp->thread)
- {
- msp->notify = &sem;
- msp->rmmod = 1;
- wake_up_interruptible(&msp->wq);
- 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)
- {
- struct msp3400c *msp = (struct msp3400c*)device->data;
- int *iarg = (int*)arg;
- __u16 *sarg = arg;
- LOCK_FLAGS;
- 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));
- msp3400c_setvolume(msp->bus,msp->left, msp->right);
- UNLOCK_I2C_BUS(msp->bus);
- break;
- case MSP_SET_TVNORM:
- msp->norm = *iarg;
- break;
- case MSP_SWITCH_MUTE:
- /* channels switching step one -- mute */
- msp->watch_stereo=0;
- del_timer(&msp->wake_stereo);
- LOCK_I2C_BUS(msp->bus);
- msp3400c_setvolume(msp->bus,0,0);
- UNLOCK_I2C_BUS(msp->bus);
- break;
- case MSP_NEWCHANNEL:
- /* channels switching step two -- trigger sound carrier scan */
- msp->watch_stereo=0;
- del_timer(&msp->wake_stereo);
- if (msp->active)
- msp->restart = 1;
- wake_up_interruptible(&msp->wq);
- break;
- case MSP_GET_VOLUME:
- *sarg = (msp->left > msp->right) ? msp->left : msp->right;
- break;
- case MSP_SET_VOLUME:
- msp->left = msp->right = *sarg;
- LOCK_I2C_BUS(msp->bus);
- msp3400c_setvolume(msp->bus,msp->left, msp->right);
- UNLOCK_I2C_BUS(msp->bus);
- break;
- case MSP_GET_BASS:
- *sarg = msp->bass;
- break;
- case MSP_SET_BASS:
- msp->bass = *sarg;
- LOCK_I2C_BUS(msp->bus);
- msp3400c_setbass(msp->bus,msp->bass);
- UNLOCK_I2C_BUS(msp->bus);
- break;
- case MSP_GET_TREBLE:
- *sarg = msp->treble;
- break;
- case MSP_SET_TREBLE:
- msp->treble = *sarg;
- LOCK_I2C_BUS(msp->bus);
- msp3400c_settreble(msp->bus,msp->treble);
- UNLOCK_I2C_BUS(msp->bus);
- break;
- case MSP_GET_STEREO:
- *sarg = msp->stereo;
- break;
- case MSP_SET_STEREO:
- if (*sarg) {
- msp->watch_stereo=0;
- del_timer(&msp->wake_stereo);
- LOCK_I2C_BUS(msp->bus);
- msp3400c_setstereo(msp,*sarg);
- UNLOCK_I2C_BUS(msp->bus);
- }
- break;
- case MSP_GET_DC:
- LOCK_I2C_BUS(msp->bus);
- *sarg = ((int)msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1b) +
- (int)msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1c));
- UNLOCK_I2C_BUS(msp->bus);
- break;
- case MSP_GET_UNIT:
- LOCK_I2C_BUS(msp->bus);
- *sarg = (int)msp3400c_read(msp->bus, I2C_MSP3400C_DFP, 0x1e);
- 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
- };
- #ifdef MODULE
- int init_module(void)
- #else
- int msp3400c_init(void)
- #endif
- {
- i2c_register_driver(&i2c_driver_msp);
- #ifdef REGISTER_MIXER
- if ((mixer_num = register_sound_mixer(&msp3400c_mixer_fops, -1)) < 0)
- printk(KERN_ERR "msp3400c: cannot allocate mixer devicen");
- #endif
- return 0;
- }
- #ifdef MODULE
- void cleanup_module(void)
- {
- i2c_unregister_driver(&i2c_driver_msp);
- #ifdef REGISTER_MIXER
- if (mixer_num >= 0)
- unregister_sound_mixer(mixer_num);
- #endif
- }
- #endif
- /*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */