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kernel-fxtec-pro1x/drivers/media/video/cx25840/cx25840-core.c
Hans Verkuil a8bbf12ad8 V4L/DVB (3249): Generalized cx25840 video/audio input handling 
- Added VIDIOC_S_AUDIO to set the audio inputs separately.
- Removed AUDC_SET_INPUT.
- Made the video inputs much more general.
- Removed cardtype CID and replaced with a CID to enable
the PVR150 workaround. The cardtype is no longer necessary
with the general video input change.
- Update VIDIOC_LOG_STATUS output to show the video and
audio inputs separately.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
2006-01-09 15:25:42 -02:00

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/* cx25840 - Conexant CX25840 audio/video decoder driver
*
* Copyright (C) 2004 Ulf Eklund
*
* Based on the saa7115 driver and on the first verison of Chris Kennedy's
* cx25840 driver.
*
* Changes by Tyler Trafford <tatrafford@comcast.net>
* - cleanup/rewrite for V4L2 API (2005)
*
* VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <media/audiochip.h>
#include <media/v4l2-common.h>
#include "cx25840.h"
MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
MODULE_LICENSE("GPL");
static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
int cx25840_debug = 0;
module_param(cx25840_debug, bool, 0644);
MODULE_PARM_DESC(cx25840_debug, "Debugging messages [0=Off (default) 1=On]");
I2C_CLIENT_INSMOD;
/* ----------------------------------------------------------------------- */
int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
{
u8 buffer[3];
buffer[0] = addr >> 8;
buffer[1] = addr & 0xff;
buffer[2] = value;
return i2c_master_send(client, buffer, 3);
}
int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
{
u8 buffer[6];
buffer[0] = addr >> 8;
buffer[1] = addr & 0xff;
buffer[2] = value >> 24;
buffer[3] = (value >> 16) & 0xff;
buffer[4] = (value >> 8) & 0xff;
buffer[5] = value & 0xff;
return i2c_master_send(client, buffer, 6);
}
u8 cx25840_read(struct i2c_client * client, u16 addr)
{
u8 buffer[2];
buffer[0] = addr >> 8;
buffer[1] = addr & 0xff;
if (i2c_master_send(client, buffer, 2) < 2)
return 0;
if (i2c_master_recv(client, buffer, 1) < 1)
return 0;
return buffer[0];
}
u32 cx25840_read4(struct i2c_client * client, u16 addr)
{
u8 buffer[4];
buffer[0] = addr >> 8;
buffer[1] = addr & 0xff;
if (i2c_master_send(client, buffer, 2) < 2)
return 0;
if (i2c_master_recv(client, buffer, 4) < 4)
return 0;
return (buffer[0] << 24) | (buffer[1] << 16) |
(buffer[2] << 8) | buffer[3];
}
int cx25840_and_or(struct i2c_client *client, u16 addr, u8 and_mask,
u8 or_value)
{
return cx25840_write(client, addr,
(cx25840_read(client, addr) & and_mask) |
or_value);
}
/* ----------------------------------------------------------------------- */
static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
enum cx25840_audio_input aud_input);
static void log_status(struct i2c_client *client);
/* ----------------------------------------------------------------------- */
static inline void init_dll1(struct i2c_client *client)
{
/* This is the Hauppauge sequence used to
* initialize the Delay Lock Loop 1 (ADC DLL). */
cx25840_write(client, 0x159, 0x23);
cx25840_write(client, 0x15a, 0x87);
cx25840_write(client, 0x15b, 0x06);
cx25840_write(client, 0x159, 0xe1);
cx25840_write(client, 0x15a, 0x86);
cx25840_write(client, 0x159, 0xe0);
cx25840_write(client, 0x159, 0xe1);
cx25840_write(client, 0x15b, 0x10);
}
static inline void init_dll2(struct i2c_client *client)
{
/* This is the Hauppauge sequence used to
* initialize the Delay Lock Loop 2 (ADC DLL). */
cx25840_write(client, 0x15d, 0xe3);
cx25840_write(client, 0x15e, 0x86);
cx25840_write(client, 0x15f, 0x06);
cx25840_write(client, 0x15d, 0xe1);
cx25840_write(client, 0x15d, 0xe0);
cx25840_write(client, 0x15d, 0xe1);
}
static void cx25840_initialize(struct i2c_client *client, int loadfw)
{
struct cx25840_state *state = i2c_get_clientdata(client);
/* datasheet startup in numbered steps, refer to page 3-77 */
/* 2. */
cx25840_and_or(client, 0x803, ~0x10, 0x00);
/* The default of this register should be 4, but I get 0 instead.
* Set this register to 4 manually. */
cx25840_write(client, 0x000, 0x04);
/* 3. */
init_dll1(client);
init_dll2(client);
cx25840_write(client, 0x136, 0x0a);
/* 4. */
cx25840_write(client, 0x13c, 0x01);
cx25840_write(client, 0x13c, 0x00);
/* 5. */
if (loadfw)
cx25840_loadfw(client);
/* 6. */
cx25840_write(client, 0x115, 0x8c);
cx25840_write(client, 0x116, 0x07);
cx25840_write(client, 0x118, 0x02);
/* 7. */
cx25840_write(client, 0x4a5, 0x80);
cx25840_write(client, 0x4a5, 0x00);
cx25840_write(client, 0x402, 0x00);
/* 8. */
cx25840_write(client, 0x401, 0x18);
cx25840_write(client, 0x4a2, 0x10);
cx25840_write(client, 0x402, 0x04);
/* 10. */
cx25840_write(client, 0x8d3, 0x1f);
cx25840_write(client, 0x8e3, 0x03);
cx25840_vbi_setup(client);
/* trial and error says these are needed to get audio */
cx25840_write(client, 0x914, 0xa0);
cx25840_write(client, 0x918, 0xa0);
cx25840_write(client, 0x919, 0x01);
/* stereo prefered */
cx25840_write(client, 0x809, 0x04);
/* AC97 shift */
cx25840_write(client, 0x8cf, 0x0f);
/* (re)set input */
set_input(client, state->vid_input, state->aud_input);
/* start microcontroller */
cx25840_and_or(client, 0x803, ~0x10, 0x10);
}
/* ----------------------------------------------------------------------- */
static void input_change(struct i2c_client *client)
{
struct cx25840_state *state = i2c_get_clientdata(client);
v4l2_std_id std = cx25840_get_v4lstd(client);
/* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
instead of V4L2_STD_PAL. Someone needs to test this. */
if (std & V4L2_STD_PAL) {
/* Follow tuner change procedure for PAL */
cx25840_write(client, 0x808, 0xff);
cx25840_write(client, 0x80b, 0x10);
} else if (std & V4L2_STD_SECAM) {
/* Select autodetect for SECAM */
cx25840_write(client, 0x808, 0xff);
cx25840_write(client, 0x80b, 0x10);
} else if (std & V4L2_STD_NTSC) {
/* NTSC */
if (state->pvr150_workaround) {
/* Certain Hauppauge PVR150 models have a hardware bug
that causes audio to drop out. For these models the
audio standard must be set explicitly.
To be precise: it affects cards with tuner models
85, 99 and 112 (model numbers from tveeprom). */
if (std == V4L2_STD_NTSC_M_JP) {
/* Japan uses EIAJ audio standard */
cx25840_write(client, 0x808, 0x2f);
} else {
/* Others use the BTSC audio standard */
cx25840_write(client, 0x808, 0x1f);
}
/* South Korea uses the A2-M (aka Zweiton M) audio
standard, and should set 0x808 to 0x3f, but I don't
know how to detect this. */
} else if (std == V4L2_STD_NTSC_M_JP) {
/* Japan uses EIAJ audio standard */
cx25840_write(client, 0x808, 0xf7);
} else {
/* Others use the BTSC audio standard */
cx25840_write(client, 0x808, 0xf6);
}
/* South Korea uses the A2-M (aka Zweiton M) audio standard,
and should set 0x808 to 0xf8, but I don't know how to
detect this. */
cx25840_write(client, 0x80b, 0x00);
}
if (cx25840_read(client, 0x803) & 0x10) {
/* restart audio decoder microcontroller */
cx25840_and_or(client, 0x803, ~0x10, 0x00);
cx25840_and_or(client, 0x803, ~0x10, 0x10);
}
}
static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
enum cx25840_audio_input aud_input)
{
struct cx25840_state *state = i2c_get_clientdata(client);
u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
vid_input <= CX25840_COMPOSITE8);
u8 reg;
cx25840_dbg("decoder set video input %d, audio input %d\n",
vid_input, aud_input);
if (is_composite) {
reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
} else {
int luma = vid_input & 0xf0;
int chroma = vid_input & 0xf00;
if ((vid_input & ~0xff0) ||
luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
cx25840_err("0x%04x is not a valid video input!\n", vid_input);
return -EINVAL;
}
reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
if (chroma >= CX25840_SVIDEO_CHROMA7) {
reg &= 0x3f;
reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
} else {
reg &= 0xcf;
reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
}
}
switch (aud_input) {
case CX25840_AUDIO_SERIAL:
/* do nothing, use serial audio input */
break;
case CX25840_AUDIO4: reg &= ~0x30; break;
case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
case CX25840_AUDIO7: reg &= ~0xc0; break;
case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
default:
cx25840_err("0x%04x is not a valid audio input!\n", aud_input);
return -EINVAL;
}
cx25840_write(client, 0x103, reg);
/* Set INPUT_MODE to Composite (0) or S-Video (1) */
cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
/* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
/* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
cx25840_and_or(client, 0x102, ~0x4, 4);
else
cx25840_and_or(client, 0x102, ~0x4, 0);
state->vid_input = vid_input;
state->aud_input = aud_input;
cx25840_audio_set_path(client);
input_change(client);
return 0;
}
/* ----------------------------------------------------------------------- */
static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
{
u8 fmt=0; /* zero is autodetect */
/* First tests should be against specific std */
if (std & V4L2_STD_NTSC_M_JP) {
fmt=0x2;
} else if (std & V4L2_STD_NTSC_443) {
fmt=0x3;
} else if (std & V4L2_STD_PAL_M) {
fmt=0x5;
} else if (std & V4L2_STD_PAL_N) {
fmt=0x6;
} else if (std & V4L2_STD_PAL_Nc) {
fmt=0x7;
} else if (std & V4L2_STD_PAL_60) {
fmt=0x8;
} else {
/* Then, test against generic ones */
if (std & V4L2_STD_NTSC) {
fmt=0x1;
} else if (std & V4L2_STD_PAL) {
fmt=0x4;
} else if (std & V4L2_STD_SECAM) {
fmt=0xc;
}
}
cx25840_and_or(client, 0x400, ~0xf, fmt);
cx25840_vbi_setup(client);
return 0;
}
v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
{
/* check VID_FMT_SEL first */
u8 fmt = cx25840_read(client, 0x400) & 0xf;
if (!fmt) {
/* check AFD_FMT_STAT if set to autodetect */
fmt = cx25840_read(client, 0x40d) & 0xf;
}
switch (fmt) {
case 0x1: return V4L2_STD_NTSC_M;
case 0x2: return V4L2_STD_NTSC_M_JP;
case 0x3: return V4L2_STD_NTSC_443;
case 0x4: return V4L2_STD_PAL;
case 0x5: return V4L2_STD_PAL_M;
case 0x6: return V4L2_STD_PAL_N;
case 0x7: return V4L2_STD_PAL_Nc;
case 0x8: return V4L2_STD_PAL_60;
case 0xc: return V4L2_STD_SECAM;
default: return V4L2_STD_UNKNOWN;
}
}
/* ----------------------------------------------------------------------- */
static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
struct cx25840_state *state = i2c_get_clientdata(client);
switch (ctrl->id) {
case CX25840_CID_ENABLE_PVR150_WORKAROUND:
state->pvr150_workaround = ctrl->value;
set_input(client, state->vid_input, state->aud_input);
break;
case V4L2_CID_BRIGHTNESS:
if (ctrl->value < 0 || ctrl->value > 255) {
cx25840_err("invalid brightness setting %d\n",
ctrl->value);
return -ERANGE;
}
cx25840_write(client, 0x414, ctrl->value - 128);
break;
case V4L2_CID_CONTRAST:
if (ctrl->value < 0 || ctrl->value > 127) {
cx25840_err("invalid contrast setting %d\n",
ctrl->value);
return -ERANGE;
}
cx25840_write(client, 0x415, ctrl->value << 1);
break;
case V4L2_CID_SATURATION:
if (ctrl->value < 0 || ctrl->value > 127) {
cx25840_err("invalid saturation setting %d\n",
ctrl->value);
return -ERANGE;
}
cx25840_write(client, 0x420, ctrl->value << 1);
cx25840_write(client, 0x421, ctrl->value << 1);
break;
case V4L2_CID_HUE:
if (ctrl->value < -127 || ctrl->value > 127) {
cx25840_err("invalid hue setting %d\n", ctrl->value);
return -ERANGE;
}
cx25840_write(client, 0x422, ctrl->value);
break;
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_MUTE:
return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
}
return 0;
}
static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
struct cx25840_state *state = i2c_get_clientdata(client);
switch (ctrl->id) {
case CX25840_CID_ENABLE_PVR150_WORKAROUND:
ctrl->value = state->pvr150_workaround;
break;
case V4L2_CID_BRIGHTNESS:
ctrl->value = cx25840_read(client, 0x414) + 128;
break;
case V4L2_CID_CONTRAST:
ctrl->value = cx25840_read(client, 0x415) >> 1;
break;
case V4L2_CID_SATURATION:
ctrl->value = cx25840_read(client, 0x420) >> 1;
break;
case V4L2_CID_HUE:
ctrl->value = cx25840_read(client, 0x422);
break;
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_MUTE:
return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
default:
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
{
switch (fmt->type) {
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
default:
return -EINVAL;
}
return 0;
}
static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
{
struct v4l2_pix_format *pix;
int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
switch (fmt->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
pix = &(fmt->fmt.pix);
Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
Vlines = pix->height + (is_pal ? 4 : 7);
if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
(Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
cx25840_err("%dx%d is not a valid size!\n",
pix->width, pix->height);
return -ERANGE;
}
HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
VSC &= 0x1fff;
if (pix->width >= 385)
filter = 0;
else if (pix->width > 192)
filter = 1;
else if (pix->width > 96)
filter = 2;
else
filter = 3;
cx25840_dbg("decoder set size %dx%d -> scale %ux%u\n",
pix->width, pix->height, HSC, VSC);
/* HSCALE=HSC */
cx25840_write(client, 0x418, HSC & 0xff);
cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
cx25840_write(client, 0x41a, HSC >> 16);
/* VSCALE=VSC */
cx25840_write(client, 0x41c, VSC & 0xff);
cx25840_write(client, 0x41d, VSC >> 8);
/* VS_INTRLACE=1 VFILT=filter */
cx25840_write(client, 0x41e, 0x8 | filter);
break;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
case V4L2_BUF_TYPE_VBI_CAPTURE:
return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
default:
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
static int cx25840_command(struct i2c_client *client, unsigned int cmd,
void *arg)
{
struct cx25840_state *state = i2c_get_clientdata(client);
struct v4l2_tuner *vt = arg;
int result = 0;
switch (cmd) {
case 0:
break;
#ifdef CONFIG_VIDEO_ADV_DEBUG
/* ioctls to allow direct access to the
* cx25840 registers for testing */
case VIDIOC_INT_G_REGISTER:
{
struct v4l2_register *reg = arg;
if (reg->i2c_id != I2C_DRIVERID_CX25840)
return -EINVAL;
reg->val = cx25840_read(client, reg->reg & 0x0fff);
break;
}
case VIDIOC_INT_S_REGISTER:
{
struct v4l2_register *reg = arg;
if (reg->i2c_id != I2C_DRIVERID_CX25840)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
break;
}
#endif
case VIDIOC_INT_DECODE_VBI_LINE:
return cx25840_vbi(client, cmd, arg);
case VIDIOC_INT_AUDIO_CLOCK_FREQ:
result = cx25840_audio(client, cmd, arg);
break;
case VIDIOC_STREAMON:
cx25840_dbg("enable output\n");
cx25840_write(client, 0x115, 0x8c);
cx25840_write(client, 0x116, 0x07);
break;
case VIDIOC_STREAMOFF:
cx25840_dbg("disable output\n");
cx25840_write(client, 0x115, 0x00);
cx25840_write(client, 0x116, 0x00);
break;
case VIDIOC_LOG_STATUS:
log_status(client);
break;
case VIDIOC_G_CTRL:
result = get_v4lctrl(client, (struct v4l2_control *)arg);
break;
case VIDIOC_S_CTRL:
result = set_v4lctrl(client, (struct v4l2_control *)arg);
break;
case VIDIOC_G_STD:
*(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
break;
case VIDIOC_S_STD:
result = set_v4lstd(client, *(v4l2_std_id *)arg);
break;
case VIDIOC_G_INPUT:
*(int *)arg = state->vid_input;
break;
case VIDIOC_S_INPUT:
result = set_input(client, *(enum cx25840_video_input *)arg, state->aud_input);
break;
case VIDIOC_S_AUDIO:
{
struct v4l2_audio *input = arg;
result = set_input(client, state->vid_input, input->index);
break;
}
case VIDIOC_G_AUDIO:
{
struct v4l2_audio *input = arg;
memset(input, 0, sizeof(*input));
input->index = state->aud_input;
break;
}
case VIDIOC_S_FREQUENCY:
input_change(client);
break;
case VIDIOC_G_TUNER:
{
u8 mode = cx25840_read(client, 0x804);
u8 pref = cx25840_read(client, 0x809) & 0xf;
u8 vpres = cx25840_read(client, 0x80a) & 0x10;
int val = 0;
vt->capability |=
V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
vt->signal = vpres ? 0xffff : 0x0;
/* get rxsubchans and audmode */
if ((mode & 0xf) == 1)
val |= V4L2_TUNER_SUB_STEREO;
else
val |= V4L2_TUNER_SUB_MONO;
if (mode == 2 || mode == 4)
val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
if (mode & 0x10)
val |= V4L2_TUNER_SUB_SAP;
vt->rxsubchans = val;
switch (pref) {
case 0:
vt->audmode = V4L2_TUNER_MODE_MONO;
break;
case 1:
case 2:
vt->audmode = V4L2_TUNER_MODE_LANG2;
break;
case 4:
default:
vt->audmode = V4L2_TUNER_MODE_STEREO;
}
break;
}
case VIDIOC_S_TUNER:
switch (vt->audmode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
/* Force PREF_MODE to MONO */
cx25840_and_or(client, 0x809, ~0xf, 0x00);
break;
case V4L2_TUNER_MODE_STEREO:
/* Force PREF_MODE to STEREO */
cx25840_and_or(client, 0x809, ~0xf, 0x04);
break;
case V4L2_TUNER_MODE_LANG2:
/* Force PREF_MODE to LANG2 */
cx25840_and_or(client, 0x809, ~0xf, 0x01);
break;
}
break;
case VIDIOC_G_FMT:
result = get_v4lfmt(client, (struct v4l2_format *)arg);
break;
case VIDIOC_S_FMT:
result = set_v4lfmt(client, (struct v4l2_format *)arg);
break;
case VIDIOC_INT_RESET:
cx25840_initialize(client, 0);
break;
case VIDIOC_INT_G_CHIP_IDENT:
*(enum v4l2_chip_ident *)arg =
V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
break;
default:
cx25840_err("invalid ioctl %x\n", cmd);
return -EINVAL;
}
return result;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_cx25840;
static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
int kind)
{
struct i2c_client *client;
struct cx25840_state *state;
u16 device_id;
/* Check if the adapter supports the needed features
* Not until kernel version 2.6.11 did the bit-algo
* correctly report that it would do an I2C-level xfer */
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return 0;
client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (client == 0)
return -ENOMEM;
memset(client, 0, sizeof(struct i2c_client));
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_cx25840;
snprintf(client->name, sizeof(client->name) - 1, "cx25840");
cx25840_dbg("detecting cx25840 client on address 0x%x\n", address << 1);
device_id = cx25840_read(client, 0x101) << 8;
device_id |= cx25840_read(client, 0x100);
/* The high byte of the device ID should be
* 0x84 if chip is present */
if ((device_id & 0xff00) != 0x8400) {
cx25840_dbg("cx25840 not found\n");
kfree(client);
return 0;
}
cx25840_info("cx25%3x-2%x found @ 0x%x (%s)\n",
(device_id & 0xfff0) >> 4,
(device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
address << 1, adapter->name);
state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
if (state == NULL) {
kfree(client);
return -ENOMEM;
}
i2c_set_clientdata(client, state);
memset(state, 0, sizeof(struct cx25840_state));
state->vid_input = CX25840_COMPOSITE7;
state->aud_input = CX25840_AUDIO8;
state->audclk_freq = 48000;
state->pvr150_workaround = 0;
cx25840_initialize(client, 1);
i2c_attach_client(client);
return 0;
}
static int cx25840_attach_adapter(struct i2c_adapter *adapter)
{
if (adapter->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
return 0;
}
static int cx25840_detach_client(struct i2c_client *client)
{
struct cx25840_state *state = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(state);
kfree(client);
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_cx25840 = {
.driver = {
.name = "cx25840",
},
.id = I2C_DRIVERID_CX25840,
.attach_adapter = cx25840_attach_adapter,
.detach_client = cx25840_detach_client,
.command = cx25840_command,
};
static int __init m__init(void)
{
return i2c_add_driver(&i2c_driver_cx25840);
}
static void __exit m__exit(void)
{
i2c_del_driver(&i2c_driver_cx25840);
}
module_init(m__init);
module_exit(m__exit);
/* ----------------------------------------------------------------------- */
static void log_status(struct i2c_client *client)
{
static const char *const fmt_strs[] = {
"0x0",
"NTSC-M", "NTSC-J", "NTSC-4.43",
"PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
"0x9", "0xA", "0xB",
"SECAM",
"0xD", "0xE", "0xF"
};
struct cx25840_state *state = i2c_get_clientdata(client);
u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
u8 gen_stat1 = cx25840_read(client, 0x40d);
u8 download_ctl = cx25840_read(client, 0x803);
u8 mod_det_stat0 = cx25840_read(client, 0x804);
u8 mod_det_stat1 = cx25840_read(client, 0x805);
u8 audio_config = cx25840_read(client, 0x808);
u8 pref_mode = cx25840_read(client, 0x809);
u8 afc0 = cx25840_read(client, 0x80b);
u8 mute_ctl = cx25840_read(client, 0x8d3);
int vid_input = state->vid_input;
int aud_input = state->aud_input;
char *p;
cx25840_info("Video signal: %spresent\n",
(microctrl_vidfmt & 0x10) ? "" : "not ");
cx25840_info("Detected format: %s\n",
fmt_strs[gen_stat1 & 0xf]);
switch (mod_det_stat0) {
case 0x00: p = "mono"; break;
case 0x01: p = "stereo"; break;
case 0x02: p = "dual"; break;
case 0x04: p = "tri"; break;
case 0x10: p = "mono with SAP"; break;
case 0x11: p = "stereo with SAP"; break;
case 0x12: p = "dual with SAP"; break;
case 0x14: p = "tri with SAP"; break;
case 0xfe: p = "forced mode"; break;
default: p = "not defined";
}
cx25840_info("Detected audio mode: %s\n", p);
switch (mod_det_stat1) {
case 0x00: p = "not defined"; break;
case 0x01: p = "EIAJ"; break;
case 0x02: p = "A2-M"; break;
case 0x03: p = "A2-BG"; break;
case 0x04: p = "A2-DK1"; break;
case 0x05: p = "A2-DK2"; break;
case 0x06: p = "A2-DK3"; break;
case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
case 0x08: p = "AM-L"; break;
case 0x09: p = "NICAM-BG"; break;
case 0x0a: p = "NICAM-DK"; break;
case 0x0b: p = "NICAM-I"; break;
case 0x0c: p = "NICAM-L"; break;
case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
case 0x0e: p = "IF FM Radio"; break;
case 0x0f: p = "BTSC"; break;
case 0x10: p = "high-deviation FM"; break;
case 0x11: p = "very high-deviation FM"; break;
case 0xfd: p = "unknown audio standard"; break;
case 0xfe: p = "forced audio standard"; break;
case 0xff: p = "no detected audio standard"; break;
default: p = "not defined";
}
cx25840_info("Detected audio standard: %s\n", p);
cx25840_info("Audio muted: %s\n",
(mute_ctl & 0x2) ? "yes" : "no");
cx25840_info("Audio microcontroller: %s\n",
(download_ctl & 0x10) ? "running" : "stopped");
switch (audio_config >> 4) {
case 0x00: p = "undefined"; break;
case 0x01: p = "BTSC"; break;
case 0x02: p = "EIAJ"; break;
case 0x03: p = "A2-M"; break;
case 0x04: p = "A2-BG"; break;
case 0x05: p = "A2-DK1"; break;
case 0x06: p = "A2-DK2"; break;
case 0x07: p = "A2-DK3"; break;
case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
case 0x09: p = "AM-L"; break;
case 0x0a: p = "NICAM-BG"; break;
case 0x0b: p = "NICAM-DK"; break;
case 0x0c: p = "NICAM-I"; break;
case 0x0d: p = "NICAM-L"; break;
case 0x0e: p = "FM radio"; break;
case 0x0f: p = "automatic detection"; break;
default: p = "undefined";
}
cx25840_info("Configured audio standard: %s\n", p);
if ((audio_config >> 4) < 0xF) {
switch (audio_config & 0xF) {
case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
case 0x01: p = "MONO2 (LANGUAGE B)"; break;
case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
case 0x04: p = "STEREO"; break;
case 0x05: p = "DUAL1 (AB)"; break;
case 0x06: p = "DUAL2 (AC) (FM)"; break;
case 0x07: p = "DUAL3 (BC) (FM)"; break;
case 0x08: p = "DUAL4 (AC) (AM)"; break;
case 0x09: p = "DUAL5 (BC) (AM)"; break;
case 0x0a: p = "SAP"; break;
default: p = "undefined";
}
cx25840_info("Configured audio mode: %s\n", p);
} else {
switch (audio_config & 0xF) {
case 0x00: p = "BG"; break;
case 0x01: p = "DK1"; break;
case 0x02: p = "DK2"; break;
case 0x03: p = "DK3"; break;
case 0x04: p = "I"; break;
case 0x05: p = "L"; break;
case 0x06: p = "BTSC"; break;
case 0x07: p = "EIAJ"; break;
case 0x08: p = "A2-M"; break;
case 0x09: p = "FM Radio"; break;
case 0x0f: p = "automatic standard and mode detection"; break;
default: p = "undefined";
}
cx25840_info("Configured audio system: %s\n", p);
}
cx25840_info("Specified standard: %s\n",
vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
if (vid_input >= CX25840_COMPOSITE1 &&
vid_input <= CX25840_COMPOSITE8) {
cx25840_info("Specified video input: Composite %d\n",
vid_input - CX25840_COMPOSITE1 + 1);
} else {
cx25840_info("Specified video input: S-Video (Luma In%d, Chroma In%d)\n",
(vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
}
if (aud_input) {
cx25840_info("Specified audio input: Tuner (In%d)\n", aud_input);
} else {
cx25840_info("Specified audio input: External\n");
}
cx25840_info("Specified audioclock freq: %d Hz\n", state->audclk_freq);
switch (pref_mode & 0xf) {
case 0: p = "mono/language A"; break;
case 1: p = "language B"; break;
case 2: p = "language C"; break;
case 3: p = "analog fallback"; break;
case 4: p = "stereo"; break;
case 5: p = "language AC"; break;
case 6: p = "language BC"; break;
case 7: p = "language AB"; break;
default: p = "undefined";
}
cx25840_info("Preferred audio mode: %s\n", p);
if ((audio_config & 0xf) == 0xf) {
switch ((afc0 >> 3) & 0x3) {
case 0: p = "system DK"; break;
case 1: p = "system L"; break;
case 2: p = "autodetect"; break;
default: p = "undefined";
}
cx25840_info("Selected 65 MHz format: %s\n", p);
switch (afc0 & 0x7) {
case 0: p = "chroma"; break;
case 1: p = "BTSC"; break;
case 2: p = "EIAJ"; break;
case 3: p = "A2-M"; break;
case 4: p = "autodetect"; break;
default: p = "undefined";
}
cx25840_info("Selected 45 MHz format: %s\n", p);
}
}
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