8a9947552d
Just about every i2c chip driver sets the I2C_DF_NOTIFY flag, so we can simply make it the default and drop the flag. If any driver really doesn't want to be notified when i2c adapters are added, that driver can simply omit to set .attach_adapter. This approach is also more robust as it prevents accidental NULL pointer dereferences. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
635 lines
16 KiB
C
635 lines
16 KiB
C
#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/slab.h>
|
|
#include <linux/poll.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/types.h>
|
|
#include <linux/videodev.h>
|
|
#include <linux/init.h>
|
|
#include <linux/crc32.h>
|
|
|
|
|
|
#define MPEG_VIDEO_TARGET_BITRATE_MAX 27000
|
|
#define MPEG_VIDEO_MAX_BITRATE_MAX 27000
|
|
#define MPEG_TOTAL_TARGET_BITRATE_MAX 27000
|
|
#define MPEG_PID_MAX ((1 << 14) - 1)
|
|
|
|
/* Addresses to scan */
|
|
static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
|
|
I2C_CLIENT_INSMOD;
|
|
|
|
MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
|
|
MODULE_AUTHOR("Andrew de Quincey");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct i2c_driver driver;
|
|
static struct i2c_client client_template;
|
|
|
|
enum saa6752hs_videoformat {
|
|
SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */
|
|
SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
|
|
SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
|
|
SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */
|
|
SAA6752HS_VF_UNKNOWN,
|
|
};
|
|
|
|
static const struct v4l2_format v4l2_format_table[] =
|
|
{
|
|
[SAA6752HS_VF_D1] =
|
|
{ .fmt = { .pix = { .width = 720, .height = 576 }}},
|
|
[SAA6752HS_VF_2_3_D1] =
|
|
{ .fmt = { .pix = { .width = 480, .height = 576 }}},
|
|
[SAA6752HS_VF_1_2_D1] =
|
|
{ .fmt = { .pix = { .width = 352, .height = 576 }}},
|
|
[SAA6752HS_VF_SIF] =
|
|
{ .fmt = { .pix = { .width = 352, .height = 288 }}},
|
|
[SAA6752HS_VF_UNKNOWN] =
|
|
{ .fmt = { .pix = { .width = 0, .height = 0}}},
|
|
};
|
|
|
|
struct saa6752hs_state {
|
|
struct i2c_client client;
|
|
struct v4l2_mpeg_compression params;
|
|
enum saa6752hs_videoformat video_format;
|
|
v4l2_std_id standard;
|
|
};
|
|
|
|
enum saa6752hs_command {
|
|
SAA6752HS_COMMAND_RESET = 0,
|
|
SAA6752HS_COMMAND_STOP = 1,
|
|
SAA6752HS_COMMAND_START = 2,
|
|
SAA6752HS_COMMAND_PAUSE = 3,
|
|
SAA6752HS_COMMAND_RECONFIGURE = 4,
|
|
SAA6752HS_COMMAND_SLEEP = 5,
|
|
SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
|
|
|
|
SAA6752HS_COMMAND_MAX
|
|
};
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
static u8 PAT[] = {
|
|
0xc2, /* i2c register */
|
|
0x00, /* table number for encoder */
|
|
|
|
0x47, /* sync */
|
|
0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
|
|
0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
|
|
|
|
0x00, /* PSI pointer to start of table */
|
|
|
|
0x00, /* tid(0) */
|
|
0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
|
|
|
|
0x00, 0x01, /* transport_stream_id(1) */
|
|
|
|
0xc1, /* version_number(0), current_next_indicator(1) */
|
|
|
|
0x00, 0x00, /* section_number(0), last_section_number(0) */
|
|
|
|
0x00, 0x01, /* program_number(1) */
|
|
|
|
0xe0, 0x00, /* PMT PID */
|
|
|
|
0x00, 0x00, 0x00, 0x00 /* CRC32 */
|
|
};
|
|
|
|
static u8 PMT[] = {
|
|
0xc2, /* i2c register */
|
|
0x01, /* table number for encoder */
|
|
|
|
0x47, /* sync */
|
|
0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
|
|
0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
|
|
|
|
0x00, /* PSI pointer to start of table */
|
|
|
|
0x02, /* tid(2) */
|
|
0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
|
|
|
|
0x00, 0x01, /* program_number(1) */
|
|
|
|
0xc1, /* version_number(0), current_next_indicator(1) */
|
|
|
|
0x00, 0x00, /* section_number(0), last_section_number(0) */
|
|
|
|
0xe0, 0x00, /* PCR_PID */
|
|
|
|
0xf0, 0x00, /* program_info_length(0) */
|
|
|
|
0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
|
|
0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
|
|
|
|
0x00, 0x00, 0x00, 0x00 /* CRC32 */
|
|
};
|
|
|
|
static struct v4l2_mpeg_compression param_defaults =
|
|
{
|
|
.st_type = V4L2_MPEG_TS_2,
|
|
.st_bitrate = {
|
|
.mode = V4L2_BITRATE_CBR,
|
|
.target = 7000,
|
|
},
|
|
|
|
.ts_pid_pmt = 16,
|
|
.ts_pid_video = 260,
|
|
.ts_pid_audio = 256,
|
|
.ts_pid_pcr = 259,
|
|
|
|
.vi_type = V4L2_MPEG_VI_2,
|
|
.vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
|
|
.vi_bitrate = {
|
|
.mode = V4L2_BITRATE_VBR,
|
|
.target = 4000,
|
|
.max = 6000,
|
|
},
|
|
|
|
.au_type = V4L2_MPEG_AU_2_II,
|
|
.au_bitrate = {
|
|
.mode = V4L2_BITRATE_CBR,
|
|
.target = 256,
|
|
},
|
|
|
|
};
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
static int saa6752hs_chip_command(struct i2c_client* client,
|
|
enum saa6752hs_command command)
|
|
{
|
|
unsigned char buf[3];
|
|
unsigned long timeout;
|
|
int status = 0;
|
|
|
|
/* execute the command */
|
|
switch(command) {
|
|
case SAA6752HS_COMMAND_RESET:
|
|
buf[0] = 0x00;
|
|
break;
|
|
|
|
case SAA6752HS_COMMAND_STOP:
|
|
buf[0] = 0x03;
|
|
break;
|
|
|
|
case SAA6752HS_COMMAND_START:
|
|
buf[0] = 0x02;
|
|
break;
|
|
|
|
case SAA6752HS_COMMAND_PAUSE:
|
|
buf[0] = 0x04;
|
|
break;
|
|
|
|
case SAA6752HS_COMMAND_RECONFIGURE:
|
|
buf[0] = 0x05;
|
|
break;
|
|
|
|
case SAA6752HS_COMMAND_SLEEP:
|
|
buf[0] = 0x06;
|
|
break;
|
|
|
|
case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
|
|
buf[0] = 0x07;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* set it and wait for it to be so */
|
|
i2c_master_send(client, buf, 1);
|
|
timeout = jiffies + HZ * 3;
|
|
for (;;) {
|
|
/* get the current status */
|
|
buf[0] = 0x10;
|
|
i2c_master_send(client, buf, 1);
|
|
i2c_master_recv(client, buf, 1);
|
|
|
|
if (!(buf[0] & 0x20))
|
|
break;
|
|
if (time_after(jiffies,timeout)) {
|
|
status = -ETIMEDOUT;
|
|
break;
|
|
}
|
|
|
|
msleep(10);
|
|
}
|
|
|
|
/* delay a bit to let encoder settle */
|
|
msleep(50);
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
static int saa6752hs_set_bitrate(struct i2c_client* client,
|
|
struct v4l2_mpeg_compression* params)
|
|
{
|
|
u8 buf[3];
|
|
|
|
/* set the bitrate mode */
|
|
buf[0] = 0x71;
|
|
buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
|
|
i2c_master_send(client, buf, 2);
|
|
|
|
/* set the video bitrate */
|
|
if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
|
|
/* set the target bitrate */
|
|
buf[0] = 0x80;
|
|
buf[1] = params->vi_bitrate.target >> 8;
|
|
buf[2] = params->vi_bitrate.target & 0xff;
|
|
i2c_master_send(client, buf, 3);
|
|
|
|
/* set the max bitrate */
|
|
buf[0] = 0x81;
|
|
buf[1] = params->vi_bitrate.max >> 8;
|
|
buf[2] = params->vi_bitrate.max & 0xff;
|
|
i2c_master_send(client, buf, 3);
|
|
} else {
|
|
/* set the target bitrate (no max bitrate for CBR) */
|
|
buf[0] = 0x81;
|
|
buf[1] = params->vi_bitrate.target >> 8;
|
|
buf[2] = params->vi_bitrate.target & 0xff;
|
|
i2c_master_send(client, buf, 3);
|
|
}
|
|
|
|
/* set the audio bitrate */
|
|
buf[0] = 0x94;
|
|
buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
|
|
i2c_master_send(client, buf, 2);
|
|
|
|
/* set the total bitrate */
|
|
buf[0] = 0xb1;
|
|
buf[1] = params->st_bitrate.target >> 8;
|
|
buf[2] = params->st_bitrate.target & 0xff;
|
|
i2c_master_send(client, buf, 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void saa6752hs_set_subsampling(struct i2c_client* client,
|
|
struct v4l2_format* f)
|
|
{
|
|
struct saa6752hs_state *h = i2c_get_clientdata(client);
|
|
int dist_352, dist_480, dist_720;
|
|
|
|
/*
|
|
FIXME: translate and round width/height into EMPRESS
|
|
subsample type:
|
|
|
|
type | PAL | NTSC
|
|
---------------------------
|
|
SIF | 352x288 | 352x240
|
|
1/2 D1 | 352x576 | 352x480
|
|
2/3 D1 | 480x576 | 480x480
|
|
D1 | 720x576 | 720x480
|
|
*/
|
|
|
|
dist_352 = abs(f->fmt.pix.width - 352);
|
|
dist_480 = abs(f->fmt.pix.width - 480);
|
|
dist_720 = abs(f->fmt.pix.width - 720);
|
|
if (dist_720 < dist_480) {
|
|
f->fmt.pix.width = 720;
|
|
f->fmt.pix.height = 576;
|
|
h->video_format = SAA6752HS_VF_D1;
|
|
}
|
|
else if (dist_480 < dist_352) {
|
|
f->fmt.pix.width = 480;
|
|
f->fmt.pix.height = 576;
|
|
h->video_format = SAA6752HS_VF_2_3_D1;
|
|
}
|
|
else {
|
|
f->fmt.pix.width = 352;
|
|
if (abs(f->fmt.pix.height - 576) <
|
|
abs(f->fmt.pix.height - 288)) {
|
|
f->fmt.pix.height = 576;
|
|
h->video_format = SAA6752HS_VF_1_2_D1;
|
|
}
|
|
else {
|
|
f->fmt.pix.height = 288;
|
|
h->video_format = SAA6752HS_VF_SIF;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void saa6752hs_set_params(struct i2c_client* client,
|
|
struct v4l2_mpeg_compression* params)
|
|
{
|
|
struct saa6752hs_state *h = i2c_get_clientdata(client);
|
|
|
|
/* check PIDs */
|
|
if (params->ts_pid_pmt <= MPEG_PID_MAX)
|
|
h->params.ts_pid_pmt = params->ts_pid_pmt;
|
|
if (params->ts_pid_pcr <= MPEG_PID_MAX)
|
|
h->params.ts_pid_pcr = params->ts_pid_pcr;
|
|
if (params->ts_pid_video <= MPEG_PID_MAX)
|
|
h->params.ts_pid_video = params->ts_pid_video;
|
|
if (params->ts_pid_audio <= MPEG_PID_MAX)
|
|
h->params.ts_pid_audio = params->ts_pid_audio;
|
|
|
|
/* check bitrate parameters */
|
|
if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
|
|
(params->vi_bitrate.mode == V4L2_BITRATE_VBR))
|
|
h->params.vi_bitrate.mode = params->vi_bitrate.mode;
|
|
if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
|
|
h->params.st_bitrate.target = params->st_bitrate.target;
|
|
if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
|
|
h->params.vi_bitrate.target = params->vi_bitrate.target;
|
|
if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
|
|
h->params.vi_bitrate.max = params->vi_bitrate.max;
|
|
if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
|
|
h->params.au_bitrate.target = params->au_bitrate.target;
|
|
|
|
/* aspect ratio */
|
|
if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
|
|
params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9)
|
|
h->params.vi_aspect_ratio = params->vi_aspect_ratio;
|
|
|
|
/* range checks */
|
|
if (h->params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
|
|
h->params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
|
|
if (h->params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
|
|
h->params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
|
|
if (h->params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
|
|
h->params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
|
|
if (h->params.au_bitrate.target <= 256)
|
|
h->params.au_bitrate.target = 256;
|
|
else
|
|
h->params.au_bitrate.target = 384;
|
|
}
|
|
|
|
static int saa6752hs_init(struct i2c_client* client)
|
|
{
|
|
unsigned char buf[9], buf2[4];
|
|
struct saa6752hs_state *h;
|
|
u32 crc;
|
|
unsigned char localPAT[256];
|
|
unsigned char localPMT[256];
|
|
|
|
h = i2c_get_clientdata(client);
|
|
|
|
/* Set video format - must be done first as it resets other settings */
|
|
buf[0] = 0x41;
|
|
buf[1] = h->video_format;
|
|
i2c_master_send(client, buf, 2);
|
|
|
|
/* Set number of lines in input signal */
|
|
buf[0] = 0x40;
|
|
buf[1] = 0x00;
|
|
if (h->standard & V4L2_STD_525_60)
|
|
buf[1] = 0x01;
|
|
i2c_master_send(client, buf, 2);
|
|
|
|
/* set bitrate */
|
|
saa6752hs_set_bitrate(client, &h->params);
|
|
|
|
/* Set GOP structure {3, 13} */
|
|
buf[0] = 0x72;
|
|
buf[1] = 0x03;
|
|
buf[2] = 0x0D;
|
|
i2c_master_send(client,buf,3);
|
|
|
|
/* Set minimum Q-scale {4} */
|
|
buf[0] = 0x82;
|
|
buf[1] = 0x04;
|
|
i2c_master_send(client,buf,2);
|
|
|
|
/* Set maximum Q-scale {12} */
|
|
buf[0] = 0x83;
|
|
buf[1] = 0x0C;
|
|
i2c_master_send(client,buf,2);
|
|
|
|
/* Set Output Protocol */
|
|
buf[0] = 0xD0;
|
|
buf[1] = 0x81;
|
|
i2c_master_send(client,buf,2);
|
|
|
|
/* Set video output stream format {TS} */
|
|
buf[0] = 0xB0;
|
|
buf[1] = 0x05;
|
|
i2c_master_send(client,buf,2);
|
|
|
|
/* compute PAT */
|
|
memcpy(localPAT, PAT, sizeof(PAT));
|
|
localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
|
|
localPAT[18] = h->params.ts_pid_pmt & 0xff;
|
|
crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
|
|
localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
|
|
localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
|
|
localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
|
|
localPAT[sizeof(PAT) - 1] = crc & 0xFF;
|
|
|
|
/* compute PMT */
|
|
memcpy(localPMT, PMT, sizeof(PMT));
|
|
localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
|
|
localPMT[4] = h->params.ts_pid_pmt & 0xff;
|
|
localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
|
|
localPMT[16] = h->params.ts_pid_pcr & 0xFF;
|
|
localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
|
|
localPMT[21] = h->params.ts_pid_video & 0xFF;
|
|
localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
|
|
localPMT[26] = h->params.ts_pid_audio & 0xFF;
|
|
crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
|
|
localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
|
|
localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
|
|
localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
|
|
localPMT[sizeof(PMT) - 1] = crc & 0xFF;
|
|
|
|
/* Set Audio PID */
|
|
buf[0] = 0xC1;
|
|
buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
|
|
buf[2] = h->params.ts_pid_audio & 0xFF;
|
|
i2c_master_send(client,buf,3);
|
|
|
|
/* Set Video PID */
|
|
buf[0] = 0xC0;
|
|
buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
|
|
buf[2] = h->params.ts_pid_video & 0xFF;
|
|
i2c_master_send(client,buf,3);
|
|
|
|
/* Set PCR PID */
|
|
buf[0] = 0xC4;
|
|
buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
|
|
buf[2] = h->params.ts_pid_pcr & 0xFF;
|
|
i2c_master_send(client,buf,3);
|
|
|
|
/* Send SI tables */
|
|
i2c_master_send(client,localPAT,sizeof(PAT));
|
|
i2c_master_send(client,localPMT,sizeof(PMT));
|
|
|
|
/* mute then unmute audio. This removes buzzing artefacts */
|
|
buf[0] = 0xa4;
|
|
buf[1] = 1;
|
|
i2c_master_send(client, buf, 2);
|
|
buf[1] = 0;
|
|
i2c_master_send(client, buf, 2);
|
|
|
|
/* start it going */
|
|
saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
|
|
|
|
/* readout current state */
|
|
buf[0] = 0xE1;
|
|
buf[1] = 0xA7;
|
|
buf[2] = 0xFE;
|
|
buf[3] = 0x82;
|
|
buf[4] = 0xB0;
|
|
i2c_master_send(client, buf, 5);
|
|
i2c_master_recv(client, buf2, 4);
|
|
|
|
/* change aspect ratio */
|
|
buf[0] = 0xE0;
|
|
buf[1] = 0xA7;
|
|
buf[2] = 0xFE;
|
|
buf[3] = 0x82;
|
|
buf[4] = 0xB0;
|
|
buf[5] = buf2[0];
|
|
switch(h->params.vi_aspect_ratio) {
|
|
case V4L2_MPEG_ASPECT_16_9:
|
|
buf[6] = buf2[1] | 0x40;
|
|
break;
|
|
case V4L2_MPEG_ASPECT_4_3:
|
|
default:
|
|
buf[6] = buf2[1] & 0xBF;
|
|
break;
|
|
break;
|
|
}
|
|
buf[7] = buf2[2];
|
|
buf[8] = buf2[3];
|
|
i2c_master_send(client, buf, 9);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
|
|
{
|
|
struct saa6752hs_state *h;
|
|
|
|
printk("saa6752hs: chip found @ 0x%x\n", addr<<1);
|
|
|
|
if (NULL == (h = kmalloc(sizeof(*h), GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
memset(h,0,sizeof(*h));
|
|
h->client = client_template;
|
|
h->params = param_defaults;
|
|
h->client.adapter = adap;
|
|
h->client.addr = addr;
|
|
|
|
/* Assume 625 input lines */
|
|
h->standard = 0;
|
|
|
|
i2c_set_clientdata(&h->client, h);
|
|
i2c_attach_client(&h->client);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int saa6752hs_probe(struct i2c_adapter *adap)
|
|
{
|
|
if (adap->class & I2C_CLASS_TV_ANALOG)
|
|
return i2c_probe(adap, &addr_data, saa6752hs_attach);
|
|
return 0;
|
|
}
|
|
|
|
static int saa6752hs_detach(struct i2c_client *client)
|
|
{
|
|
struct saa6752hs_state *h;
|
|
|
|
h = i2c_get_clientdata(client);
|
|
i2c_detach_client(client);
|
|
kfree(h);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
|
|
{
|
|
struct saa6752hs_state *h = i2c_get_clientdata(client);
|
|
struct v4l2_mpeg_compression *params = arg;
|
|
int err = 0;
|
|
|
|
switch (cmd) {
|
|
case VIDIOC_S_MPEGCOMP:
|
|
if (NULL == params) {
|
|
/* apply settings and start encoder */
|
|
saa6752hs_init(client);
|
|
break;
|
|
}
|
|
saa6752hs_set_params(client, params);
|
|
/* fall through */
|
|
case VIDIOC_G_MPEGCOMP:
|
|
*params = h->params;
|
|
break;
|
|
case VIDIOC_G_FMT:
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
|
|
if (h->video_format == SAA6752HS_VF_UNKNOWN)
|
|
h->video_format = SAA6752HS_VF_D1;
|
|
f->fmt.pix.width =
|
|
v4l2_format_table[h->video_format].fmt.pix.width;
|
|
f->fmt.pix.height =
|
|
v4l2_format_table[h->video_format].fmt.pix.height;
|
|
break ;
|
|
}
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
|
|
saa6752hs_set_subsampling(client, f);
|
|
break;
|
|
}
|
|
case VIDIOC_S_STD:
|
|
h->standard = *((v4l2_std_id *) arg);
|
|
break;
|
|
default:
|
|
/* nothing */
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static struct i2c_driver driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "i2c saa6752hs MPEG encoder",
|
|
.id = I2C_DRIVERID_SAA6752HS,
|
|
.attach_adapter = saa6752hs_probe,
|
|
.detach_client = saa6752hs_detach,
|
|
.command = saa6752hs_command,
|
|
};
|
|
|
|
static struct i2c_client client_template =
|
|
{
|
|
.name = "saa6752hs",
|
|
.flags = I2C_CLIENT_ALLOW_USE,
|
|
.driver = &driver,
|
|
};
|
|
|
|
static int __init saa6752hs_init_module(void)
|
|
{
|
|
return i2c_add_driver(&driver);
|
|
}
|
|
|
|
static void __exit saa6752hs_cleanup_module(void)
|
|
{
|
|
i2c_del_driver(&driver);
|
|
}
|
|
|
|
module_init(saa6752hs_init_module);
|
|
module_exit(saa6752hs_cleanup_module);
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|