// SPDX-License-Identifier: GPL-2.0-or-later
/*
saa6752hs - i2c-driver for the saa6752hs by Philips
Copyright (C) 2004 Andrew de Quincey
AC-3 support:
Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
*/
#include <linux/module.h>
#include <linux/kernel.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/videodev2.h>
#include <linux/init.h>
#include <linux/crc32.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-common.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 )
MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder" );
MODULE_AUTHOR("Andrew de Quincey" );
MODULE_LICENSE("GPL" );
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,
};
struct saa6752hs_mpeg_params {
/* transport streams */
__u16 ts_pid_pmt;
__u16 ts_pid_audio;
__u16 ts_pid_video;
__u16 ts_pid_pcr;
/* audio */
enum v4l2_mpeg_audio_encoding au_encoding;
enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate;
enum v4l2_mpeg_audio_ac3_bitrate au_ac3_bitrate;
/* video */
enum v4l2_mpeg_video_aspect vi_aspect;
enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
__u32 vi_bitrate;
__u32 vi_bitrate_peak;
};
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 v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
struct { /* video bitrate mode control cluster */
struct v4l2_ctrl *video_bitrate_mode;
struct v4l2_ctrl *video_bitrate;
struct v4l2_ctrl *video_bitrate_peak;
};
u32 revision;
int has_ac3;
struct saa6752hs_mpeg_params 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 inline struct saa6752hs_state *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct saa6752hs_state, sd);
}
/* ---------------------------------------------------------------------- */
static const u8 PAT[] = {
0 xc2, /* i2c register */
0 x00, /* table number for encoder */
0 x47, /* sync */
0 x40, 0 x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
0 x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
0 x00, /* PSI pointer to start of table */
0 x00, /* tid(0) */
0 xb0, 0 x0d, /* section_syntax_indicator(1), section_length(13) */
0 x00, 0 x01, /* transport_stream_id(1) */
0 xc1, /* version_number(0), current_next_indicator(1) */
0 x00, 0 x00, /* section_number(0), last_section_number(0) */
0 x00, 0 x01, /* program_number(1) */
0 xe0, 0 x00, /* PMT PID */
0 x00, 0 x00, 0 x00, 0 x00 /* CRC32 */
};
static const u8 PMT[] = {
0 xc2, /* i2c register */
0 x01, /* table number for encoder */
0 x47, /* sync */
0 x40, 0 x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
0 x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
0 x00, /* PSI pointer to start of table */
0 x02, /* tid(2) */
0 xb0, 0 x17, /* section_syntax_indicator(1), section_length(23) */
0 x00, 0 x01, /* program_number(1) */
0 xc1, /* version_number(0), current_next_indicator(1) */
0 x00, 0 x00, /* section_number(0), last_section_number(0) */
0 xe0, 0 x00, /* PCR_PID */
0 xf0, 0 x00, /* program_info_length(0) */
0 x02, 0 xe0, 0 x00, 0 xf0, 0 x00, /* video stream type(2), pid */
0 x04, 0 xe0, 0 x00, 0 xf0, 0 x00, /* audio stream type(4), pid */
0 x00, 0 x00, 0 x00, 0 x00 /* CRC32 */
};
static const u8 PMT_AC3[] = {
0 xc2, /* i2c register */
0 x01, /* table number for encoder(1) */
0 x47, /* sync */
0 x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */
0 x10, /* PMT PID (0x0010) */
0 x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
0 x00, /* PSI pointer to start of table */
0 x02, /* TID (2) */
0 xb0, 0 x1a, /* section_syntax_indicator(1), section_length(26) */
0 x00, 0 x01, /* program_number(1) */
0 xc1, /* version_number(0), current_next_indicator(1) */
0 x00, 0 x00, /* section_number(0), last_section_number(0) */
0 xe1, 0 x04, /* PCR_PID (0x0104) */
0 xf0, 0 x00, /* program_info_length(0) */
0 x02, 0 xe1, 0 x00, 0 xf0, 0 x00, /* video stream type(2), pid */
0 x06, 0 xe1, 0 x03, 0 xf0, 0 x03, /* audio stream type(6), pid */
0 x6a, /* AC3 */
0 x01, /* Descriptor_length(1) */
0 x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */
0 xED, 0 xDE, 0 x2D, 0 xF3 /* CRC32 BE */
};
static const struct saa6752hs_mpeg_params param_defaults =
{
.ts_pid_pmt = 16 ,
.ts_pid_video = 260 ,
.ts_pid_audio = 256 ,
.ts_pid_pcr = 259 ,
.vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3,
.vi_bitrate = 4000 ,
.vi_bitrate_peak = 6000 ,
.vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
.au_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
.au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
.au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
};
/* ---------------------------------------------------------------------- */
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 ] = 0 x00;
break ;
case SAA6752HS_COMMAND_STOP:
buf[0 ] = 0 x03;
break ;
case SAA6752HS_COMMAND_START:
buf[0 ] = 0 x02;
break ;
case SAA6752HS_COMMAND_PAUSE:
buf[0 ] = 0 x04;
break ;
case SAA6752HS_COMMAND_RECONFIGURE:
buf[0 ] = 0 x05;
break ;
case SAA6752HS_COMMAND_SLEEP:
buf[0 ] = 0 x06;
break ;
case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
buf[0 ] = 0 x07;
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 ] = 0 x10;
i2c_master_send(client, buf, 1 );
i2c_master_recv(client, buf, 1 );
if (!(buf[0 ] & 0 x20))
break ;
if (time_after(jiffies,timeout)) {
status = -ETIMEDOUT;
break ;
}
msleep(10 );
}
/* delay a bit to let encoder settle */
msleep(50 );
return status;
}
static inline void set_reg8(struct i2c_client *client, uint8_t reg, uint8_t val)
{
u8 buf[2 ];
buf[0 ] = reg;
buf[1 ] = val;
i2c_master_send(client, buf, 2 );
}
static inline void set_reg16(struct i2c_client *client, uint8_t reg, uint16_t val)
{
u8 buf[3 ];
buf[0 ] = reg;
buf[1 ] = val >> 8 ;
buf[2 ] = val & 0 xff;
i2c_master_send(client, buf, 3 );
}
static int saa6752hs_set_bitrate(struct i2c_client *client,
struct saa6752hs_state *h)
{
struct saa6752hs_mpeg_params *params = &h->params;
int tot_bitrate;
int is_384k;
/* set the bitrate mode */
set_reg8(client, 0 x71,
params->vi_bitrate_mode != V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
/* set the video bitrate */
if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
/* set the target bitrate */
set_reg16(client, 0 x80, params->vi_bitrate);
/* set the max bitrate */
set_reg16(client, 0 x81, params->vi_bitrate_peak);
tot_bitrate = params->vi_bitrate_peak;
} else {
/* set the target bitrate (no max bitrate for CBR) */
set_reg16(client, 0 x81, params->vi_bitrate);
tot_bitrate = params->vi_bitrate;
}
/* set the audio encoding */
set_reg8(client, 0 x93,
params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3);
/* set the audio bitrate */
if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3)
is_384k = V4L2_MPEG_AUDIO_AC3_BITRATE_384K == params->au_ac3_bitrate;
else
is_384k = V4L2_MPEG_AUDIO_L2_BITRATE_384K == params->au_l2_bitrate;
set_reg8(client, 0 x94, is_384k);
tot_bitrate += is_384k ? 384 : 256 ;
/* Note: the total max bitrate is determined by adding the video and audio
bitrates together and also adding an extra 768kbit/s to stay on the
safe side. If more control should be required, then an extra MPEG control
should be added. */
tot_bitrate += 768 ;
if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX)
tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX;
/* set the total bitrate */
set_reg16(client, 0 xb1, tot_bitrate);
return 0 ;
}
static int saa6752hs_try_ctrl(struct v4l2_ctrl *ctrl)
{
struct saa6752hs_state *h =
container_of(ctrl->handler, struct saa6752hs_state, hdl);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
/* peak bitrate shall be >= normal bitrate */
if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
h->video_bitrate_peak->val < h->video_bitrate->val)
h->video_bitrate_peak->val = h->video_bitrate->val;
break ;
}
return 0 ;
}
static int saa6752hs_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct saa6752hs_state *h =
container_of(ctrl->handler, struct saa6752hs_state, hdl);
struct saa6752hs_mpeg_params *params = &h->params;
switch (ctrl->id) {
case V4L2_CID_MPEG_STREAM_TYPE:
break ;
case V4L2_CID_MPEG_STREAM_PID_PMT:
params->ts_pid_pmt = ctrl->val;
break ;
case V4L2_CID_MPEG_STREAM_PID_AUDIO:
params->ts_pid_audio = ctrl->val;
break ;
case V4L2_CID_MPEG_STREAM_PID_VIDEO:
params->ts_pid_video = ctrl->val;
break ;
case V4L2_CID_MPEG_STREAM_PID_PCR:
params->ts_pid_pcr = ctrl->val;
break ;
case V4L2_CID_MPEG_AUDIO_ENCODING:
params->au_encoding = ctrl->val;
break ;
case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
params->au_l2_bitrate = ctrl->val;
break ;
case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
params->au_ac3_bitrate = ctrl->val;
break ;
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
break ;
case V4L2_CID_MPEG_VIDEO_ENCODING:
break ;
case V4L2_CID_MPEG_VIDEO_ASPECT:
params->vi_aspect = ctrl->val;
break ;
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
params->vi_bitrate_mode = ctrl->val;
params->vi_bitrate = h->video_bitrate->val / 1000 ;
params->vi_bitrate_peak = h->video_bitrate_peak->val / 1000 ;
v4l2_ctrl_activate(h->video_bitrate_peak,
ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
break ;
default :
return -EINVAL;
}
return 0 ;
}
static int saa6752hs_init(struct v4l2_subdev *sd, u32 leading_null_bytes)
{
unsigned char buf[9 ], buf2[4 ];
struct saa6752hs_state *h = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
unsigned size;
u32 crc;
unsigned char localPAT[256 ];
unsigned char localPMT[256 ];
/* Set video format - must be done first as it resets other settings */
set_reg8(client, 0 x41, h->video_format);
/* Set number of lines in input signal */
set_reg8(client, 0 x40, (h->standard & V4L2_STD_525_60) ? 1 : 0 );
/* set bitrate */
saa6752hs_set_bitrate(client, h);
/* Set GOP structure {3, 13} */
set_reg16(client, 0 x72, 0 x030d);
/* Set minimum Q-scale {4} */
set_reg8(client, 0 x82, 0 x04);
/* Set maximum Q-scale {12} */
set_reg8(client, 0 x83, 0 x0c);
/* Set Output Protocol */
set_reg8(client, 0 xd0, 0 x81);
/* Set video output stream format {TS} */
set_reg8(client, 0 xb0, 0 x05);
/* Set leading null byte for TS */
set_reg16(client, 0 xf6, leading_null_bytes);
/* compute PAT */
memcpy(localPAT, PAT, sizeof (PAT));
localPAT[17 ] = 0 xe0 | ((h->params.ts_pid_pmt >> 8 ) & 0 x0f);
localPAT[18 ] = h->params.ts_pid_pmt & 0 xff;
crc = crc32_be(~0 , &localPAT[7 ], sizeof (PAT) - 7 - 4 );
localPAT[sizeof (PAT) - 4 ] = (crc >> 24 ) & 0 xFF;
localPAT[sizeof (PAT) - 3 ] = (crc >> 16 ) & 0 xFF;
localPAT[sizeof (PAT) - 2 ] = (crc >> 8 ) & 0 xFF;
localPAT[sizeof (PAT) - 1 ] = crc & 0 xFF;
/* compute PMT */
if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) {
size = sizeof (PMT_AC3);
memcpy(localPMT, PMT_AC3, size);
} else {
size = sizeof (PMT);
memcpy(localPMT, PMT, size);
}
localPMT[3 ] = 0 x40 | ((h->params.ts_pid_pmt >> 8 ) & 0 x0f);
localPMT[4 ] = h->params.ts_pid_pmt & 0 xff;
localPMT[15 ] = 0 xE0 | ((h->params.ts_pid_pcr >> 8 ) & 0 x0F);
localPMT[16 ] = h->params.ts_pid_pcr & 0 xFF;
localPMT[20 ] = 0 xE0 | ((h->params.ts_pid_video >> 8 ) & 0 x0F);
localPMT[21 ] = h->params.ts_pid_video & 0 xFF;
localPMT[25 ] = 0 xE0 | ((h->params.ts_pid_audio >> 8 ) & 0 x0F);
localPMT[26 ] = h->params.ts_pid_audio & 0 xFF;
crc = crc32_be(~0 , &localPMT[7 ], size - 7 - 4 );
localPMT[size - 4 ] = (crc >> 24 ) & 0 xFF;
localPMT[size - 3 ] = (crc >> 16 ) & 0 xFF;
localPMT[size - 2 ] = (crc >> 8 ) & 0 xFF;
localPMT[size - 1 ] = crc & 0 xFF;
/* Set Audio PID */
set_reg16(client, 0 xc1, h->params.ts_pid_audio);
/* Set Video PID */
set_reg16(client, 0 xc0, h->params.ts_pid_video);
/* Set PCR PID */
set_reg16(client, 0 xc4, h->params.ts_pid_pcr);
/* Send SI tables */
i2c_master_send(client, localPAT, sizeof (PAT));
i2c_master_send(client, localPMT, size);
/* mute then unmute audio. This removes buzzing artefacts */
set_reg8(client, 0 xa4, 1 );
set_reg8(client, 0 xa4, 0 );
/* start it going */
saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
/* readout current state */
buf[0 ] = 0 xE1;
buf[1 ] = 0 xA7;
buf[2 ] = 0 xFE;
buf[3 ] = 0 x82;
buf[4 ] = 0 xB0;
i2c_master_send(client, buf, 5 );
i2c_master_recv(client, buf2, 4 );
/* change aspect ratio */
buf[0 ] = 0 xE0;
buf[1 ] = 0 xA7;
buf[2 ] = 0 xFE;
buf[3 ] = 0 x82;
buf[4 ] = 0 xB0;
buf[5 ] = buf2[0 ];
switch (h->params.vi_aspect) {
case V4L2_MPEG_VIDEO_ASPECT_16x9:
buf[6 ] = buf2[1 ] | 0 x40;
break ;
case V4L2_MPEG_VIDEO_ASPECT_4x3:
default :
buf[6 ] = buf2[1 ] & 0 xBF;
break ;
}
buf[7 ] = buf2[2 ];
buf[8 ] = buf2[3 ];
i2c_master_send(client, buf, 9 );
return 0 ;
}
static int saa6752hs_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *f = &format->format;
struct saa6752hs_state *h = to_state(sd);
if (format->pad)
return -EINVAL;
if (h->video_format == SAA6752HS_VF_UNKNOWN)
h->video_format = SAA6752HS_VF_D1;
f->width = v4l2_format_table[h->video_format].fmt.pix.width;
f->height = v4l2_format_table[h->video_format].fmt.pix.height;
f->code = MEDIA_BUS_FMT_FIXED;
f->field = V4L2_FIELD_INTERLACED;
f->colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0 ;
}
static int saa6752hs_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *f = &format->format;
struct saa6752hs_state *h = to_state(sd);
int dist_352, dist_480, dist_720;
if (format->pad)
return -EINVAL;
f->code = MEDIA_BUS_FMT_FIXED;
dist_352 = abs(f->width - 352 );
dist_480 = abs(f->width - 480 );
dist_720 = abs(f->width - 720 );
if (dist_720 < dist_480) {
f->width = 720 ;
f->height = 576 ;
} else if (dist_480 < dist_352) {
f->width = 480 ;
f->height = 576 ;
} else {
f->width = 352 ;
if (abs(f->height - 576 ) < abs(f->height - 288 ))
f->height = 576 ;
else
f->height = 288 ;
}
f->field = V4L2_FIELD_INTERLACED;
f->colorspace = V4L2_COLORSPACE_SMPTE170M;
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
return 0 ;
/*
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
*/
if (f->code != MEDIA_BUS_FMT_FIXED)
return -EINVAL;
if (f->width == 720 )
h->video_format = SAA6752HS_VF_D1;
else if (f->width == 480 )
h->video_format = SAA6752HS_VF_2_3_D1;
else if (f->height == 576 )
h->video_format = SAA6752HS_VF_1_2_D1;
else
h->video_format = SAA6752HS_VF_SIF;
return 0 ;
}
static int saa6752hs_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct saa6752hs_state *h = to_state(sd);
h->standard = std;
return 0 ;
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops saa6752hs_ctrl_ops = {
.try_ctrl = saa6752hs_try_ctrl,
.s_ctrl = saa6752hs_s_ctrl,
};
static const struct v4l2_subdev_core_ops saa6752hs_core_ops = {
.init = saa6752hs_init,
};
static const struct v4l2_subdev_video_ops saa6752hs_video_ops = {
.s_std = saa6752hs_s_std,
};
static const struct v4l2_subdev_pad_ops saa6752hs_pad_ops = {
.get_fmt = saa6752hs_get_fmt,
.set_fmt = saa6752hs_set_fmt,
};
static const struct v4l2_subdev_ops saa6752hs_ops = {
.core = &saa6752hs_core_ops,
.video = &saa6752hs_video_ops,
.pad = &saa6752hs_pad_ops,
};
static int saa6752hs_probe(struct i2c_client *client)
{
struct saa6752hs_state *h;
struct v4l2_subdev *sd;
struct v4l2_ctrl_handler *hdl;
u8 addr = 0 x13;
u8 data[12 ];
v4l_info(client, "chip found @ 0x%x (%s)\n" ,
client->addr << 1 , client->adapter->name);
h = devm_kzalloc(&client->dev, sizeof (*h), GFP_KERNEL);
if (h == NULL)
return -ENOMEM;
sd = &h->sd;
v4l2_i2c_subdev_init(sd, client, &saa6752hs_ops);
i2c_master_send(client, &addr, 1 );
i2c_master_recv(client, data, sizeof (data));
h->revision = (data[8 ] << 8 ) | data[9 ];
h->has_ac3 = 0 ;
if (h->revision == 0 x0206) {
h->has_ac3 = 1 ;
v4l_info(client, "supports AC-3\n" );
}
h->params = param_defaults;
hdl = &h->hdl;
v4l2_ctrl_handler_init(hdl, 14 );
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_AUDIO_ENCODING,
h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 :
V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
0 x0d, V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_AUDIO_L2_BITRATE,
V4L2_MPEG_AUDIO_L2_BITRATE_384K,
~((1 << V4L2_MPEG_AUDIO_L2_BITRATE_256K) |
(1 << V4L2_MPEG_AUDIO_L2_BITRATE_384K)),
V4L2_MPEG_AUDIO_L2_BITRATE_256K);
if (h->has_ac3)
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_AUDIO_AC3_BITRATE,
V4L2_MPEG_AUDIO_AC3_BITRATE_384K,
~((1 << V4L2_MPEG_AUDIO_AC3_BITRATE_256K) |
(1 << V4L2_MPEG_AUDIO_AC3_BITRATE_384K)),
V4L2_MPEG_AUDIO_AC3_BITRATE_256K);
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
~(1 << V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000),
V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_VIDEO_ENCODING,
V4L2_MPEG_VIDEO_ENCODING_MPEG_2,
~(1 << V4L2_MPEG_VIDEO_ENCODING_MPEG_2),
V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_VIDEO_ASPECT,
V4L2_MPEG_VIDEO_ASPECT_16x9, 0 x01,
V4L2_MPEG_VIDEO_ASPECT_4x3);
h->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1000000 , 27000000 , 1000 , 8000000 );
v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_STREAM_TYPE,
V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
~(1 << V4L2_MPEG_STREAM_TYPE_MPEG2_TS),
V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
h->video_bitrate_mode = v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0 ,
V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
h->video_bitrate = v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE, 1000000 , 27000000 , 1000 , 6000000 );
v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_STREAM_PID_PMT, 0 , (1 << 14 ) - 1 , 1 , 16 );
v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_STREAM_PID_AUDIO, 0 , (1 << 14 ) - 1 , 1 , 260 );
v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_STREAM_PID_VIDEO, 0 , (1 << 14 ) - 1 , 1 , 256 );
v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
V4L2_CID_MPEG_STREAM_PID_PCR, 0 , (1 << 14 ) - 1 , 1 , 259 );
sd->ctrl_handler = hdl;
if (hdl->error) {
int err = hdl->error;
v4l2_ctrl_handler_free(hdl);
return err;
}
v4l2_ctrl_cluster(3 , &h->video_bitrate_mode);
v4l2_ctrl_handler_setup(hdl);
h->standard = 0 ; /* Assume 625 input lines */
return 0 ;
}
static void saa6752hs_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&to_state(sd)->hdl);
}
static const struct i2c_device_id saa6752hs_id[] = {
{ "saa6752hs" },
{ }
};
MODULE_DEVICE_TABLE(i2c, saa6752hs_id);
static struct i2c_driver saa6752hs_driver = {
.driver = {
.name = "saa6752hs" ,
},
.probe = saa6752hs_probe,
.remove = saa6752hs_remove,
.id_table = saa6752hs_id,
};
module_i2c_driver(saa6752hs_driver);
Messung V0.5 in Prozent C=95 H=95 G=94
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-06-08)
¤
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