649 lines
15 KiB
C
649 lines
15 KiB
C
/*
|
|
* saa7191.c - Philips SAA7191 video decoder driver
|
|
*
|
|
* Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
|
|
* Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/major.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/videodev2.h>
|
|
#include <linux/i2c.h>
|
|
#include <media/v4l2-device.h>
|
|
|
|
#include "saa7191.h"
|
|
|
|
#define SAA7191_MODULE_VERSION "0.0.5"
|
|
|
|
MODULE_DESCRIPTION("Philips SAA7191 video decoder driver");
|
|
MODULE_VERSION(SAA7191_MODULE_VERSION);
|
|
MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
// #define SAA7191_DEBUG
|
|
|
|
#ifdef SAA7191_DEBUG
|
|
#define dprintk(x...) printk("SAA7191: " x);
|
|
#else
|
|
#define dprintk(x...)
|
|
#endif
|
|
|
|
#define SAA7191_SYNC_COUNT 30
|
|
#define SAA7191_SYNC_DELAY 100 /* milliseconds */
|
|
|
|
struct saa7191 {
|
|
struct v4l2_subdev sd;
|
|
|
|
/* the register values are stored here as the actual
|
|
* I2C-registers are write-only */
|
|
u8 reg[25];
|
|
|
|
int input;
|
|
v4l2_std_id norm;
|
|
};
|
|
|
|
static inline struct saa7191 *to_saa7191(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct saa7191, sd);
|
|
}
|
|
|
|
static const u8 initseq[] = {
|
|
0, /* Subaddress */
|
|
|
|
0x50, /* (0x50) SAA7191_REG_IDEL */
|
|
|
|
/* 50 Hz signal timing */
|
|
0x30, /* (0x30) SAA7191_REG_HSYB */
|
|
0x00, /* (0x00) SAA7191_REG_HSYS */
|
|
0xe8, /* (0xe8) SAA7191_REG_HCLB */
|
|
0xb6, /* (0xb6) SAA7191_REG_HCLS */
|
|
0xf4, /* (0xf4) SAA7191_REG_HPHI */
|
|
|
|
/* control */
|
|
SAA7191_LUMA_APER_1, /* (0x01) SAA7191_REG_LUMA - CVBS mode */
|
|
0x00, /* (0x00) SAA7191_REG_HUEC */
|
|
0xf8, /* (0xf8) SAA7191_REG_CKTQ */
|
|
0xf8, /* (0xf8) SAA7191_REG_CKTS */
|
|
0x90, /* (0x90) SAA7191_REG_PLSE */
|
|
0x90, /* (0x90) SAA7191_REG_SESE */
|
|
0x00, /* (0x00) SAA7191_REG_GAIN */
|
|
SAA7191_STDC_NFEN | SAA7191_STDC_HRMV, /* (0x0c) SAA7191_REG_STDC
|
|
* - not SECAM,
|
|
* slow time constant */
|
|
SAA7191_IOCK_OEDC | SAA7191_IOCK_OEHS | SAA7191_IOCK_OEVS
|
|
| SAA7191_IOCK_OEDY, /* (0x78) SAA7191_REG_IOCK
|
|
* - chroma from CVBS, GPSW1 & 2 off */
|
|
SAA7191_CTL3_AUFD | SAA7191_CTL3_SCEN | SAA7191_CTL3_OFTS
|
|
| SAA7191_CTL3_YDEL0, /* (0x99) SAA7191_REG_CTL3
|
|
* - automatic field detection */
|
|
0x00, /* (0x00) SAA7191_REG_CTL4 */
|
|
0x2c, /* (0x2c) SAA7191_REG_CHCV - PAL nominal value */
|
|
0x00, /* unused */
|
|
0x00, /* unused */
|
|
|
|
/* 60 Hz signal timing */
|
|
0x34, /* (0x34) SAA7191_REG_HS6B */
|
|
0x0a, /* (0x0a) SAA7191_REG_HS6S */
|
|
0xf4, /* (0xf4) SAA7191_REG_HC6B */
|
|
0xce, /* (0xce) SAA7191_REG_HC6S */
|
|
0xf4, /* (0xf4) SAA7191_REG_HP6I */
|
|
};
|
|
|
|
/* SAA7191 register handling */
|
|
|
|
static u8 saa7191_read_reg(struct v4l2_subdev *sd, u8 reg)
|
|
{
|
|
return to_saa7191(sd)->reg[reg];
|
|
}
|
|
|
|
static int saa7191_read_status(struct v4l2_subdev *sd, u8 *value)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret;
|
|
|
|
ret = i2c_master_recv(client, value, 1);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "SAA7191: saa7191_read_status(): read failed\n");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int saa7191_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
to_saa7191(sd)->reg[reg] = value;
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
/* the first byte of data must be the first subaddress number (register) */
|
|
static int saa7191_write_block(struct v4l2_subdev *sd,
|
|
u8 length, const u8 *data)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct saa7191 *decoder = to_saa7191(sd);
|
|
int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < (length - 1); i++) {
|
|
decoder->reg[data[0] + i] = data[i + 1];
|
|
}
|
|
|
|
ret = i2c_master_send(client, data, length);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "SAA7191: saa7191_write_block(): "
|
|
"write failed\n");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Helper functions */
|
|
|
|
static int saa7191_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
struct saa7191 *decoder = to_saa7191(sd);
|
|
u8 luma = saa7191_read_reg(sd, SAA7191_REG_LUMA);
|
|
u8 iock = saa7191_read_reg(sd, SAA7191_REG_IOCK);
|
|
int err;
|
|
|
|
switch (input) {
|
|
case SAA7191_INPUT_COMPOSITE: /* Set Composite input */
|
|
iock &= ~(SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW1
|
|
| SAA7191_IOCK_GPSW2);
|
|
/* Chrominance trap active */
|
|
luma &= ~SAA7191_LUMA_BYPS;
|
|
break;
|
|
case SAA7191_INPUT_SVIDEO: /* Set S-Video input */
|
|
iock |= SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW2;
|
|
/* Chrominance trap bypassed */
|
|
luma |= SAA7191_LUMA_BYPS;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = saa7191_write_reg(sd, SAA7191_REG_LUMA, luma);
|
|
if (err)
|
|
return -EIO;
|
|
err = saa7191_write_reg(sd, SAA7191_REG_IOCK, iock);
|
|
if (err)
|
|
return -EIO;
|
|
|
|
decoder->input = input;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int saa7191_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
|
|
{
|
|
struct saa7191 *decoder = to_saa7191(sd);
|
|
u8 stdc = saa7191_read_reg(sd, SAA7191_REG_STDC);
|
|
u8 ctl3 = saa7191_read_reg(sd, SAA7191_REG_CTL3);
|
|
u8 chcv = saa7191_read_reg(sd, SAA7191_REG_CHCV);
|
|
int err;
|
|
|
|
if (norm & V4L2_STD_PAL) {
|
|
stdc &= ~SAA7191_STDC_SECS;
|
|
ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
|
|
chcv = SAA7191_CHCV_PAL;
|
|
} else if (norm & V4L2_STD_NTSC) {
|
|
stdc &= ~SAA7191_STDC_SECS;
|
|
ctl3 &= ~SAA7191_CTL3_AUFD;
|
|
ctl3 |= SAA7191_CTL3_FSEL;
|
|
chcv = SAA7191_CHCV_NTSC;
|
|
} else if (norm & V4L2_STD_SECAM) {
|
|
stdc |= SAA7191_STDC_SECS;
|
|
ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
|
|
chcv = SAA7191_CHCV_PAL;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
|
|
if (err)
|
|
return -EIO;
|
|
err = saa7191_write_reg(sd, SAA7191_REG_STDC, stdc);
|
|
if (err)
|
|
return -EIO;
|
|
err = saa7191_write_reg(sd, SAA7191_REG_CHCV, chcv);
|
|
if (err)
|
|
return -EIO;
|
|
|
|
decoder->norm = norm;
|
|
|
|
dprintk("ctl3: %02x stdc: %02x chcv: %02x\n", ctl3,
|
|
stdc, chcv);
|
|
dprintk("norm: %llx\n", norm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int saa7191_wait_for_signal(struct v4l2_subdev *sd, u8 *status)
|
|
{
|
|
int i = 0;
|
|
|
|
dprintk("Checking for signal...\n");
|
|
|
|
for (i = 0; i < SAA7191_SYNC_COUNT; i++) {
|
|
if (saa7191_read_status(sd, status))
|
|
return -EIO;
|
|
|
|
if (((*status) & SAA7191_STATUS_HLCK) == 0) {
|
|
dprintk("Signal found\n");
|
|
return 0;
|
|
}
|
|
|
|
msleep(SAA7191_SYNC_DELAY);
|
|
}
|
|
|
|
dprintk("No signal\n");
|
|
|
|
return -EBUSY;
|
|
}
|
|
|
|
static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
|
|
{
|
|
struct saa7191 *decoder = to_saa7191(sd);
|
|
u8 stdc = saa7191_read_reg(sd, SAA7191_REG_STDC);
|
|
u8 ctl3 = saa7191_read_reg(sd, SAA7191_REG_CTL3);
|
|
u8 status;
|
|
v4l2_std_id old_norm = decoder->norm;
|
|
int err = 0;
|
|
|
|
dprintk("SAA7191 extended signal auto-detection...\n");
|
|
|
|
*norm &= V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM;
|
|
stdc &= ~SAA7191_STDC_SECS;
|
|
ctl3 &= ~(SAA7191_CTL3_FSEL);
|
|
|
|
err = saa7191_write_reg(sd, SAA7191_REG_STDC, stdc);
|
|
if (err) {
|
|
err = -EIO;
|
|
goto out;
|
|
}
|
|
err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
|
|
if (err) {
|
|
err = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
ctl3 |= SAA7191_CTL3_AUFD;
|
|
err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
|
|
if (err) {
|
|
err = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
msleep(SAA7191_SYNC_DELAY);
|
|
|
|
err = saa7191_wait_for_signal(sd, &status);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (status & SAA7191_STATUS_FIDT) {
|
|
/* 60Hz signal -> NTSC */
|
|
dprintk("60Hz signal: NTSC\n");
|
|
*norm &= V4L2_STD_NTSC;
|
|
return 0;
|
|
}
|
|
|
|
/* 50Hz signal */
|
|
dprintk("50Hz signal: Trying PAL...\n");
|
|
|
|
/* try PAL first */
|
|
err = saa7191_s_std(sd, V4L2_STD_PAL);
|
|
if (err)
|
|
goto out;
|
|
|
|
msleep(SAA7191_SYNC_DELAY);
|
|
|
|
err = saa7191_wait_for_signal(sd, &status);
|
|
if (err)
|
|
goto out;
|
|
|
|
/* not 50Hz ? */
|
|
if (status & SAA7191_STATUS_FIDT) {
|
|
dprintk("No 50Hz signal\n");
|
|
saa7191_s_std(sd, old_norm);
|
|
*norm = V4L2_STD_UNKNOWN;
|
|
return 0;
|
|
}
|
|
|
|
if (status & SAA7191_STATUS_CODE) {
|
|
dprintk("PAL\n");
|
|
*norm &= V4L2_STD_PAL;
|
|
return saa7191_s_std(sd, old_norm);
|
|
}
|
|
|
|
dprintk("No color detected with PAL - Trying SECAM...\n");
|
|
|
|
/* no color detected ? -> try SECAM */
|
|
err = saa7191_s_std(sd, V4L2_STD_SECAM);
|
|
if (err)
|
|
goto out;
|
|
|
|
msleep(SAA7191_SYNC_DELAY);
|
|
|
|
err = saa7191_wait_for_signal(sd, &status);
|
|
if (err)
|
|
goto out;
|
|
|
|
/* not 50Hz ? */
|
|
if (status & SAA7191_STATUS_FIDT) {
|
|
dprintk("No 50Hz signal\n");
|
|
*norm = V4L2_STD_UNKNOWN;
|
|
goto out;
|
|
}
|
|
|
|
if (status & SAA7191_STATUS_CODE) {
|
|
/* Color detected -> SECAM */
|
|
dprintk("SECAM\n");
|
|
*norm &= V4L2_STD_SECAM;
|
|
return saa7191_s_std(sd, old_norm);
|
|
}
|
|
|
|
dprintk("No color detected with SECAM - Going back to PAL.\n");
|
|
*norm = V4L2_STD_UNKNOWN;
|
|
|
|
out:
|
|
return saa7191_s_std(sd, old_norm);
|
|
}
|
|
|
|
static int saa7191_autodetect_norm(struct v4l2_subdev *sd)
|
|
{
|
|
u8 status;
|
|
|
|
dprintk("SAA7191 signal auto-detection...\n");
|
|
|
|
dprintk("Reading status...\n");
|
|
|
|
if (saa7191_read_status(sd, &status))
|
|
return -EIO;
|
|
|
|
dprintk("Checking for signal...\n");
|
|
|
|
/* no signal ? */
|
|
if (status & SAA7191_STATUS_HLCK) {
|
|
dprintk("No signal\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
dprintk("Signal found\n");
|
|
|
|
if (status & SAA7191_STATUS_FIDT) {
|
|
/* 60hz signal -> NTSC */
|
|
dprintk("NTSC\n");
|
|
return saa7191_s_std(sd, V4L2_STD_NTSC);
|
|
} else {
|
|
/* 50hz signal -> PAL */
|
|
dprintk("PAL\n");
|
|
return saa7191_s_std(sd, V4L2_STD_PAL);
|
|
}
|
|
}
|
|
|
|
static int saa7191_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
switch (ctrl->id) {
|
|
case SAA7191_CONTROL_BANDPASS:
|
|
case SAA7191_CONTROL_BANDPASS_WEIGHT:
|
|
case SAA7191_CONTROL_CORING:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_LUMA);
|
|
switch (ctrl->id) {
|
|
case SAA7191_CONTROL_BANDPASS:
|
|
ctrl->value = ((s32)reg & SAA7191_LUMA_BPSS_MASK)
|
|
>> SAA7191_LUMA_BPSS_SHIFT;
|
|
break;
|
|
case SAA7191_CONTROL_BANDPASS_WEIGHT:
|
|
ctrl->value = ((s32)reg & SAA7191_LUMA_APER_MASK)
|
|
>> SAA7191_LUMA_APER_SHIFT;
|
|
break;
|
|
case SAA7191_CONTROL_CORING:
|
|
ctrl->value = ((s32)reg & SAA7191_LUMA_CORI_MASK)
|
|
>> SAA7191_LUMA_CORI_SHIFT;
|
|
break;
|
|
}
|
|
break;
|
|
case SAA7191_CONTROL_FORCE_COLOUR:
|
|
case SAA7191_CONTROL_CHROMA_GAIN:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_GAIN);
|
|
if (ctrl->id == SAA7191_CONTROL_FORCE_COLOUR)
|
|
ctrl->value = ((s32)reg & SAA7191_GAIN_COLO) ? 1 : 0;
|
|
else
|
|
ctrl->value = ((s32)reg & SAA7191_GAIN_LFIS_MASK)
|
|
>> SAA7191_GAIN_LFIS_SHIFT;
|
|
break;
|
|
case V4L2_CID_HUE:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_HUEC);
|
|
if (reg < 0x80)
|
|
reg += 0x80;
|
|
else
|
|
reg -= 0x80;
|
|
ctrl->value = (s32)reg;
|
|
break;
|
|
case SAA7191_CONTROL_VTRC:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_STDC);
|
|
ctrl->value = ((s32)reg & SAA7191_STDC_VTRC) ? 1 : 0;
|
|
break;
|
|
case SAA7191_CONTROL_LUMA_DELAY:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_CTL3);
|
|
ctrl->value = ((s32)reg & SAA7191_CTL3_YDEL_MASK)
|
|
>> SAA7191_CTL3_YDEL_SHIFT;
|
|
if (ctrl->value >= 4)
|
|
ctrl->value -= 8;
|
|
break;
|
|
case SAA7191_CONTROL_VNR:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_CTL4);
|
|
ctrl->value = ((s32)reg & SAA7191_CTL4_VNOI_MASK)
|
|
>> SAA7191_CTL4_VNOI_SHIFT;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int saa7191_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
switch (ctrl->id) {
|
|
case SAA7191_CONTROL_BANDPASS:
|
|
case SAA7191_CONTROL_BANDPASS_WEIGHT:
|
|
case SAA7191_CONTROL_CORING:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_LUMA);
|
|
switch (ctrl->id) {
|
|
case SAA7191_CONTROL_BANDPASS:
|
|
reg &= ~SAA7191_LUMA_BPSS_MASK;
|
|
reg |= (ctrl->value << SAA7191_LUMA_BPSS_SHIFT)
|
|
& SAA7191_LUMA_BPSS_MASK;
|
|
break;
|
|
case SAA7191_CONTROL_BANDPASS_WEIGHT:
|
|
reg &= ~SAA7191_LUMA_APER_MASK;
|
|
reg |= (ctrl->value << SAA7191_LUMA_APER_SHIFT)
|
|
& SAA7191_LUMA_APER_MASK;
|
|
break;
|
|
case SAA7191_CONTROL_CORING:
|
|
reg &= ~SAA7191_LUMA_CORI_MASK;
|
|
reg |= (ctrl->value << SAA7191_LUMA_CORI_SHIFT)
|
|
& SAA7191_LUMA_CORI_MASK;
|
|
break;
|
|
}
|
|
ret = saa7191_write_reg(sd, SAA7191_REG_LUMA, reg);
|
|
break;
|
|
case SAA7191_CONTROL_FORCE_COLOUR:
|
|
case SAA7191_CONTROL_CHROMA_GAIN:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_GAIN);
|
|
if (ctrl->id == SAA7191_CONTROL_FORCE_COLOUR) {
|
|
if (ctrl->value)
|
|
reg |= SAA7191_GAIN_COLO;
|
|
else
|
|
reg &= ~SAA7191_GAIN_COLO;
|
|
} else {
|
|
reg &= ~SAA7191_GAIN_LFIS_MASK;
|
|
reg |= (ctrl->value << SAA7191_GAIN_LFIS_SHIFT)
|
|
& SAA7191_GAIN_LFIS_MASK;
|
|
}
|
|
ret = saa7191_write_reg(sd, SAA7191_REG_GAIN, reg);
|
|
break;
|
|
case V4L2_CID_HUE:
|
|
reg = ctrl->value & 0xff;
|
|
if (reg < 0x80)
|
|
reg += 0x80;
|
|
else
|
|
reg -= 0x80;
|
|
ret = saa7191_write_reg(sd, SAA7191_REG_HUEC, reg);
|
|
break;
|
|
case SAA7191_CONTROL_VTRC:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_STDC);
|
|
if (ctrl->value)
|
|
reg |= SAA7191_STDC_VTRC;
|
|
else
|
|
reg &= ~SAA7191_STDC_VTRC;
|
|
ret = saa7191_write_reg(sd, SAA7191_REG_STDC, reg);
|
|
break;
|
|
case SAA7191_CONTROL_LUMA_DELAY: {
|
|
s32 value = ctrl->value;
|
|
if (value < 0)
|
|
value += 8;
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_CTL3);
|
|
reg &= ~SAA7191_CTL3_YDEL_MASK;
|
|
reg |= (value << SAA7191_CTL3_YDEL_SHIFT)
|
|
& SAA7191_CTL3_YDEL_MASK;
|
|
ret = saa7191_write_reg(sd, SAA7191_REG_CTL3, reg);
|
|
break;
|
|
}
|
|
case SAA7191_CONTROL_VNR:
|
|
reg = saa7191_read_reg(sd, SAA7191_REG_CTL4);
|
|
reg &= ~SAA7191_CTL4_VNOI_MASK;
|
|
reg |= (ctrl->value << SAA7191_CTL4_VNOI_SHIFT)
|
|
& SAA7191_CTL4_VNOI_MASK;
|
|
ret = saa7191_write_reg(sd, SAA7191_REG_CTL4, reg);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* I2C-interface */
|
|
|
|
static int saa7191_g_input_status(struct v4l2_subdev *sd, u32 *status)
|
|
{
|
|
u8 status_reg;
|
|
int res = V4L2_IN_ST_NO_SIGNAL;
|
|
|
|
if (saa7191_read_status(sd, &status_reg))
|
|
return -EIO;
|
|
if ((status_reg & SAA7191_STATUS_HLCK) == 0)
|
|
res = 0;
|
|
if (!(status_reg & SAA7191_STATUS_CODE))
|
|
res |= V4L2_IN_ST_NO_COLOR;
|
|
*status = res;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops saa7191_core_ops = {
|
|
.g_ctrl = saa7191_g_ctrl,
|
|
.s_ctrl = saa7191_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops saa7191_video_ops = {
|
|
.s_std = saa7191_s_std,
|
|
.s_routing = saa7191_s_routing,
|
|
.querystd = saa7191_querystd,
|
|
.g_input_status = saa7191_g_input_status,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops saa7191_ops = {
|
|
.core = &saa7191_core_ops,
|
|
.video = &saa7191_video_ops,
|
|
};
|
|
|
|
static int saa7191_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int err = 0;
|
|
struct saa7191 *decoder;
|
|
struct v4l2_subdev *sd;
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
|
|
if (!decoder)
|
|
return -ENOMEM;
|
|
|
|
sd = &decoder->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &saa7191_ops);
|
|
|
|
err = saa7191_write_block(sd, sizeof(initseq), initseq);
|
|
if (err) {
|
|
printk(KERN_ERR "SAA7191 initialization failed\n");
|
|
return err;
|
|
}
|
|
|
|
printk(KERN_INFO "SAA7191 initialized\n");
|
|
|
|
decoder->input = SAA7191_INPUT_COMPOSITE;
|
|
decoder->norm = V4L2_STD_PAL;
|
|
|
|
err = saa7191_autodetect_norm(sd);
|
|
if (err && (err != -EBUSY))
|
|
printk(KERN_ERR "SAA7191: Signal auto-detection failed\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int saa7191_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id saa7191_id[] = {
|
|
{ "saa7191", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, saa7191_id);
|
|
|
|
static struct i2c_driver saa7191_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "saa7191",
|
|
},
|
|
.probe = saa7191_probe,
|
|
.remove = saa7191_remove,
|
|
.id_table = saa7191_id,
|
|
};
|
|
|
|
module_i2c_driver(saa7191_driver);
|