?? tda9887.c
字號:
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/types.h>
#include <linux/videodev.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/slab.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
#include "audiochip.h"
#include "id.h"
#include "i2c-compat.h"
#else
#include <media/audiochip.h>
#include <media/id.h>
#endif
/* Chips:
TDA9885 (PAL, NTSC)
TDA9886 (PAL, SECAM, NTSC)
TDA9887 (PAL, SECAM, NTSC, FM Radio)
found on:
- Pinnacle PCTV (Jul.2002 Version with MT2032, bttv)
TDA9887 (world), TDA9885 (USA)
Note: OP2 of tda988x must be set to 1, else MT2032 is disabled!
- KNC One TV-Station RDS (saa7134)
*/
/* Addresses to scan */
static unsigned short normal_i2c[] = {I2C_CLIENT_END};
static unsigned short normal_i2c_range[] = {0x86>>1,0x86>>1,I2C_CLIENT_END};
I2C_CLIENT_INSMOD;
/* insmod options */
static int debug = 0;
static char *pal = "b";
static char *secam = "l";
MODULE_PARM(debug,"i");
MODULE_PARM(pal,"s");
MODULE_PARM(secam,"s");
MODULE_LICENSE("GPL");
/* ---------------------------------------------------------------------- */
#define dprintk if (debug) printk
struct tda9887 {
struct i2c_client client;
int radio,tvnorm;
int pinnacle_id;
};
static struct i2c_driver driver;
static struct i2c_client client_template;
/* ---------------------------------------------------------------------- */
//
// TDA defines
//
//// first reg
#define cVideoTrapBypassOFF 0x00 // bit b0
#define cVideoTrapBypassON 0x01 // bit b0
#define cAutoMuteFmInactive 0x00 // bit b1
#define cAutoMuteFmActive 0x02 // bit b1
#define cIntercarrier 0x00 // bit b2
#define cQSS 0x04 // bit b2
#define cPositiveAmTV 0x00 // bit b3:4
#define cFmRadio 0x08 // bit b3:4
#define cNegativeFmTV 0x10 // bit b3:4
#define cForcedMuteAudioON 0x20 // bit b5
#define cForcedMuteAudioOFF 0x00 // bit b5
#define cOutputPort1Active 0x00 // bit b6
#define cOutputPort1Inactive 0x40 // bit b6
#define cOutputPort2Active 0x00 // bit b7
#define cOutputPort2Inactive 0x80 // bit b7
//// second reg
#define cDeemphasisOFF 0x00 // bit c5
#define cDeemphasisON 0x20 // bit c5
#define cDeemphasis75 0x00 // bit c6
#define cDeemphasis50 0x40 // bit c6
#define cAudioGain0 0x00 // bit c7
#define cAudioGain6 0x80 // bit c7
//// third reg
#define cAudioIF_4_5 0x00 // bit e0:1
#define cAudioIF_5_5 0x01 // bit e0:1
#define cAudioIF_6_0 0x02 // bit e0:1
#define cAudioIF_6_5 0x03 // bit e0:1
#define cVideoIF_58_75 0x00 // bit e2:4
#define cVideoIF_45_75 0x04 // bit e2:4
#define cVideoIF_38_90 0x08 // bit e2:4
#define cVideoIF_38_00 0x0C // bit e2:4
#define cVideoIF_33_90 0x10 // bit e2:4
#define cVideoIF_33_40 0x14 // bit e2:4
#define cRadioIF_45_75 0x18 // bit e2:4
#define cRadioIF_38_90 0x1C // bit e2:4
#define cTunerGainNormal 0x00 // bit e5
#define cTunerGainLow 0x20 // bit e5
#define cGating_18 0x00 // bit e6
#define cGating_36 0x40 // bit e6
#define cAgcOutON 0x80 // bit e7
#define cAgcOutOFF 0x00 // bit e7
static int tda9887_miro(struct tda9887 *t)
{
int rc;
u8 bData[4] = { 0 };
u8 bVideoIF = 0;
u8 bAudioIF = 0;
u8 bDeEmphasis = 0;
u8 bDeEmphVal = 0;
u8 bModulation = 0;
u8 bCarrierMode = 0;
u8 bOutPort1 = cOutputPort1Inactive;
#if 0
u8 bOutPort2 = cOutputPort2Inactive & mbTADState; // store i2c tuner state
#else
u8 bOutPort2 = cOutputPort2Inactive;
#endif
u8 bVideoTrap = cVideoTrapBypassOFF;
#if 1
u8 bTopAdjust = 0x0e /* -2dB */;
#else
u8 bTopAdjust = 0;
#endif
#if 0
if (mParams.fVideoTrap)
bVideoTrap = cVideoTrapBypassON;
#endif
if (t->radio) {
bVideoTrap = cVideoTrapBypassOFF;
bCarrierMode = cQSS;
bModulation = cFmRadio;
bOutPort1 = cOutputPort1Inactive;
bDeEmphasis = cDeemphasisON;
if (3 == t->pinnacle_id) {
/* ntsc */
bDeEmphVal = cDeemphasis75;
bAudioIF = cAudioIF_4_5;
bVideoIF = cRadioIF_45_75;
} else {
/* pal */
bAudioIF = cAudioIF_5_5;
bVideoIF = cRadioIF_38_90;
bDeEmphVal = cDeemphasis50;
}
} else if (t->tvnorm == VIDEO_MODE_PAL) {
bDeEmphasis = cDeemphasisON;
bDeEmphVal = cDeemphasis50;
bModulation = cNegativeFmTV;
bOutPort1 = cOutputPort1Inactive;
if (1 == t->pinnacle_id) {
bCarrierMode = cIntercarrier;
} else {
// stereo boards
bCarrierMode = cQSS;
}
switch (pal[0]) {
case 'b':
case 'g':
case 'h':
bVideoIF = cVideoIF_38_90;
bAudioIF = cAudioIF_5_5;
break;
case 'd':
bVideoIF = cVideoIF_38_00;
bAudioIF = cAudioIF_6_5;
break;
case 'i':
bVideoIF = cVideoIF_38_90;
bAudioIF = cAudioIF_6_0;
break;
case 'm':
case 'n':
bVideoIF = cVideoIF_45_75;
bAudioIF = cAudioIF_4_5;
bDeEmphVal = cDeemphasis75;
if ((5 == t->pinnacle_id) || (6 == t->pinnacle_id)) {
bCarrierMode = cIntercarrier;
} else {
bCarrierMode = cQSS;
}
break;
}
} else if (t->tvnorm == VIDEO_MODE_SECAM) {
bAudioIF = cAudioIF_6_5;
bDeEmphasis = cDeemphasisON;
bDeEmphVal = cDeemphasis50;
bModulation = cNegativeFmTV;
bCarrierMode = cQSS;
bOutPort1 = cOutputPort1Inactive;
switch (secam[0]) {
case 'd':
bVideoIF = cVideoIF_38_00;
break;
case 'k':
bVideoIF = cVideoIF_38_90;
break;
case 'l':
bVideoIF = cVideoIF_38_90;
bDeEmphasis = cDeemphasisOFF;
bDeEmphVal = cDeemphasis75;
bModulation = cPositiveAmTV;
break;
case 'L' /* L1 */:
bVideoIF = cVideoIF_33_90;
bDeEmphasis = cDeemphasisOFF;
bDeEmphVal = cDeemphasis75;
bModulation = cPositiveAmTV;
break;
}
} else if (t->tvnorm == VIDEO_MODE_NTSC) {
bVideoIF = cVideoIF_45_75;
bAudioIF = cAudioIF_4_5;
bDeEmphasis = cDeemphasisON;
bDeEmphVal = cDeemphasis75;
bModulation = cNegativeFmTV;
bOutPort1 = cOutputPort1Inactive;
if ((5 == t->pinnacle_id) || (6 == t->pinnacle_id)) {
bCarrierMode = cIntercarrier;
} else {
bCarrierMode = cQSS;
}
}
bData[1] = bVideoTrap | // B0: video trap bypass
cAutoMuteFmInactive | // B1: auto mute
bCarrierMode | // B2: InterCarrier for PAL else QSS
bModulation | // B3 - B4: positive AM TV for SECAM only
cForcedMuteAudioOFF | // B5: forced Audio Mute (off)
bOutPort1 | // B6: Out Port 1
bOutPort2; // B7: Out Port 2
bData[2] = bTopAdjust | // C0 - C4: Top Adjust 0 == -16dB 31 == 15dB
bDeEmphasis | // C5: De-emphasis on/off
bDeEmphVal | // C6: De-emphasis 50/75 microsec
cAudioGain0; // C7: normal audio gain
bData[3] = bAudioIF | // E0 - E1: Sound IF
bVideoIF | // E2 - E4: Video IF
cTunerGainNormal | // E5: Tuner gain (normal)
cGating_18 | // E6: Gating (18%)
cAgcOutOFF; // E7: VAGC (off)
dprintk("tda9885/6/7: 0x%02x 0x%02x 0x%02x [pinnacle_id=%d]\n",
bData[1],bData[2],bData[3],t->pinnacle_id);
if (4 != (rc = i2c_master_send(&t->client,bData,4)))
printk("tda9885/6/7: i2c i/o error: rc == %d (should be 4)\n",rc);
return 0;
}
/* ---------------------------------------------------------------------- */
#if 0
/* just for reference: old knc-one saa7134 stuff */
static unsigned char buf_pal_bg[] = { 0x00, 0x16, 0x70, 0x49 };
static unsigned char buf_pal_i[] = { 0x00, 0x16, 0x70, 0x4a };
static unsigned char buf_pal_dk[] = { 0x00, 0x16, 0x70, 0x4b };
static unsigned char buf_pal_l[] = { 0x00, 0x06, 0x50, 0x4b };
static unsigned char buf_fm_stereo[] = { 0x00, 0x0e, 0x0d, 0x77 };
#endif
static unsigned char buf_pal_bg[] = { 0x00, 0x96, 0x70, 0x49 };
static unsigned char buf_pal_i[] = { 0x00, 0x96, 0x70, 0x4a };
static unsigned char buf_pal_dk[] = { 0x00, 0x96, 0x70, 0x4b };
static unsigned char buf_pal_l[] = { 0x00, 0x86, 0x50, 0x4b };
static unsigned char buf_fm_stereo[] = { 0x00, 0x8e, 0x0d, 0x77 };
static unsigned char buf_ntsc[] = { 0x00, 0x96, 0x70, 0x44 };
static unsigned char buf_ntsc_jp[] = { 0x00, 0x96, 0x70, 0x40 };
static int tda9887_configure(struct tda9887 *t)
{
unsigned char *buf = NULL;
int rc;
if (t->radio) {
dprintk("tda9885/6/7: FM Radio mode\n");
buf = buf_fm_stereo;
} else if (t->tvnorm == VIDEO_MODE_PAL) {
dprintk("tda9885/6/7: PAL-%c mode\n",pal[0]);
switch (pal[0]) {
case 'b':
case 'g':
buf = buf_pal_bg;
break;
case 'i':
buf = buf_pal_i;
break;
case 'd':
case 'k':
buf = buf_pal_dk;
break;
case 'l':
buf = buf_pal_l;
break;
}
} else if (t->tvnorm == VIDEO_MODE_NTSC) {
dprintk("tda9885/6/7: NTSC mode\n");
buf = buf_ntsc;
} else if (t->tvnorm == VIDEO_MODE_SECAM) {
dprintk("tda9885/6/7: SECAM mode\n");
buf = buf_pal_l;
} else if (t->tvnorm == 6 /* BTTV hack */) {
dprintk("tda9885/6/7: NTSC-Japan mode\n");
buf = buf_ntsc_jp;
}
if (NULL == buf) {
printk("tda9885/6/7 unknown norm=%d\n",t->tvnorm);
return 0;
}
dprintk("tda9885/6/7: 0x%02x 0x%02x 0x%02x\n",
buf[1],buf[2],buf[3]);
if (4 != (rc = i2c_master_send(&t->client,buf,4)))
printk("tda9885/6/7: i2c i/o error: rc == %d (should be 4)\n",rc);
return 0;
}
/* ---------------------------------------------------------------------- */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int tda9887_attach(struct i2c_adapter *adap, int addr, int kind)
#else
static int tda9887_attach(struct i2c_adapter *adap, int addr,
unsigned short flags, int kind)
#endif
{
struct tda9887 *t;
client_template.adapter = adap;
client_template.addr = addr;
printk("tda9887: chip found @ 0x%x\n", addr<<1);
if (NULL == (t = kmalloc(sizeof(*t), GFP_KERNEL)))
return -ENOMEM;
memset(t,0,sizeof(*t));
t->client = client_template;
t->pinnacle_id = -1;
t->tvnorm=VIDEO_MODE_PAL;
i2c_set_clientdata(&t->client, t);
i2c_attach_client(&t->client);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
MOD_INC_USE_COUNT;
#endif
return 0;
}
static int tda9887_probe(struct i2c_adapter *adap)
{
#ifdef I2C_ADAP_CLASS_TV_ANALOG
if (adap->class & I2C_ADAP_CLASS_TV_ANALOG)
return i2c_probe(adap, &addr_data, tda9887_attach);
#else
switch (adap->id) {
case I2C_ALGO_BIT | I2C_HW_B_BT848:
case I2C_ALGO_BIT | I2C_HW_B_RIVA:
case I2C_ALGO_SAA7134:
return i2c_probe(adap, &addr_data, tda9887_attach);
break;
}
#endif
return 0;
}
static int tda9887_detach(struct i2c_client *client)
{
struct tda9887 *t = i2c_get_clientdata(client);
i2c_detach_client(client);
kfree(t);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
MOD_DEC_USE_COUNT;
#endif
return 0;
}
static int
tda9887_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
struct tda9887 *t = i2c_get_clientdata(client);
switch (cmd) {
/* --- configuration --- */
case AUDC_SET_RADIO:
t->radio = 1;
if (-1 != t->pinnacle_id)
tda9887_miro(t);
else
tda9887_configure(t);
break;
case AUDC_CONFIG_PINNACLE:
{
int *i = arg;
t->pinnacle_id = *i;
tda9887_miro(t);
break;
}
/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
kernel pointer here... */
case VIDIOCSCHAN:
{
struct video_channel *vc = arg;
t->radio = 0;
t->tvnorm = vc->norm;
if (-1 != t->pinnacle_id)
tda9887_miro(t);
else
tda9887_configure(t);
break;
}
default:
/* nothing */
break;
}
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver driver = {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,54)
.owner = THIS_MODULE,
#endif
.name = "i2c tda9887 driver",
.id = -1, /* FIXME */
.flags = I2C_DF_NOTIFY,
.attach_adapter = tda9887_probe,
.detach_client = tda9887_detach,
.command = tda9887_command,
};
static struct i2c_client client_template =
{
I2C_DEVNAME("tda9887"),
.flags = I2C_CLIENT_ALLOW_USE,
.driver = &driver,
};
static int tda9887_init_module(void)
{
i2c_add_driver(&driver);
return 0;
}
static void tda9887_cleanup_module(void)
{
i2c_del_driver(&driver);
}
module_init(tda9887_init_module);
module_exit(tda9887_cleanup_module);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
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