diff options
Diffstat (limited to 'drivers/media/video/saa7134/saa6752hs.c')
| -rw-r--r-- | drivers/media/video/saa7134/saa6752hs.c | 833 |
1 files changed, 0 insertions, 833 deletions
diff --git a/drivers/media/video/saa7134/saa6752hs.c b/drivers/media/video/saa7134/saa6752hs.c deleted file mode 100644 index 707be175509..00000000000 --- a/drivers/media/video/saa7134/saa6752hs.c +++ /dev/null @@ -1,833 +0,0 @@ -#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 <media/v4l2-common.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, -}; - -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_l2_bitrate au_l2_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 i2c_client client; - 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 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 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_l2_bitrate = V4L2_MPEG_AUDIO_L2_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] = 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 saa6752hs_mpeg_params* params) -{ - u8 buf[3]; - int tot_bitrate; - - /* set the bitrate mode */ - buf[0] = 0x71; - buf[1] = (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) ? 0 : 1; - i2c_master_send(client, buf, 2); - - /* set the video bitrate */ - if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) { - /* set the target bitrate */ - buf[0] = 0x80; - buf[1] = params->vi_bitrate >> 8; - buf[2] = params->vi_bitrate & 0xff; - i2c_master_send(client, buf, 3); - - /* set the max bitrate */ - buf[0] = 0x81; - buf[1] = params->vi_bitrate_peak >> 8; - buf[2] = params->vi_bitrate_peak & 0xff; - i2c_master_send(client, buf, 3); - tot_bitrate = params->vi_bitrate_peak; - } else { - /* set the target bitrate (no max bitrate for CBR) */ - buf[0] = 0x81; - buf[1] = params->vi_bitrate >> 8; - buf[2] = params->vi_bitrate & 0xff; - i2c_master_send(client, buf, 3); - tot_bitrate = params->vi_bitrate; - } - - /* set the audio bitrate */ - buf[0] = 0x94; - buf[1] = (V4L2_MPEG_AUDIO_L2_BITRATE_256K == params->au_l2_bitrate) ? 0 : 1; - i2c_master_send(client, buf, 2); - tot_bitrate += (V4L2_MPEG_AUDIO_L2_BITRATE_256K == params->au_l2_bitrate) ? 256 : 384; - - /* 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 */ - buf[0] = 0xb1; - buf[1] = tot_bitrate >> 8; - buf[2] = tot_bitrate & 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 int handle_ctrl(struct saa6752hs_mpeg_params *params, - struct v4l2_ext_control *ctrl, unsigned int cmd) -{ - int old = 0, new; - int set = (cmd == VIDIOC_S_EXT_CTRLS); - - new = ctrl->value; - switch (ctrl->id) { - case V4L2_CID_MPEG_STREAM_TYPE: - old = V4L2_MPEG_STREAM_TYPE_MPEG2_TS; - if (set && new != old) - return -ERANGE; - new = old; - break; - case V4L2_CID_MPEG_STREAM_PID_PMT: - old = params->ts_pid_pmt; - if (set && new > MPEG_PID_MAX) - return -ERANGE; - if (new > MPEG_PID_MAX) - new = MPEG_PID_MAX; - params->ts_pid_pmt = new; - break; - case V4L2_CID_MPEG_STREAM_PID_AUDIO: - old = params->ts_pid_audio; - if (set && new > MPEG_PID_MAX) - return -ERANGE; - if (new > MPEG_PID_MAX) - new = MPEG_PID_MAX; - params->ts_pid_audio = new; - break; - case V4L2_CID_MPEG_STREAM_PID_VIDEO: - old = params->ts_pid_video; - if (set && new > MPEG_PID_MAX) - return -ERANGE; - if (new > MPEG_PID_MAX) - new = MPEG_PID_MAX; - params->ts_pid_video = new; - break; - case V4L2_CID_MPEG_STREAM_PID_PCR: - old = params->ts_pid_pcr; - if (set && new > MPEG_PID_MAX) - return -ERANGE; - if (new > MPEG_PID_MAX) - new = MPEG_PID_MAX; - params->ts_pid_pcr = new; - break; - case V4L2_CID_MPEG_AUDIO_ENCODING: - old = V4L2_MPEG_AUDIO_ENCODING_LAYER_2; - if (set && new != old) - return -ERANGE; - new = old; - break; - case V4L2_CID_MPEG_AUDIO_L2_BITRATE: - old = params->au_l2_bitrate; - if (set && new != V4L2_MPEG_AUDIO_L2_BITRATE_256K && - new != V4L2_MPEG_AUDIO_L2_BITRATE_384K) - return -ERANGE; - if (new <= V4L2_MPEG_AUDIO_L2_BITRATE_256K) - new = V4L2_MPEG_AUDIO_L2_BITRATE_256K; - else - new = V4L2_MPEG_AUDIO_L2_BITRATE_384K; - params->au_l2_bitrate = new; - break; - case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: - old = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000; - if (set && new != old) - return -ERANGE; - new = old; - break; - case V4L2_CID_MPEG_VIDEO_ENCODING: - old = V4L2_MPEG_VIDEO_ENCODING_MPEG_2; - if (set && new != old) - return -ERANGE; - new = old; - break; - case V4L2_CID_MPEG_VIDEO_ASPECT: - old = params->vi_aspect; - if (set && new != V4L2_MPEG_VIDEO_ASPECT_16x9 && - new != V4L2_MPEG_VIDEO_ASPECT_4x3) - return -ERANGE; - if (new != V4L2_MPEG_VIDEO_ASPECT_16x9) - new = V4L2_MPEG_VIDEO_ASPECT_4x3; - params->vi_aspect = new; - break; - case V4L2_CID_MPEG_VIDEO_BITRATE: - old = params->vi_bitrate * 1000; - new = 1000 * (new / 1000); - if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000) - return -ERANGE; - if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000) - new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000; - params->vi_bitrate = new / 1000; - break; - case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: - old = params->vi_bitrate_peak * 1000; - new = 1000 * (new / 1000); - if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000) - return -ERANGE; - if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000) - new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000; - params->vi_bitrate_peak = new / 1000; - break; - case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: - old = params->vi_bitrate_mode; - params->vi_bitrate_mode = new; - break; - default: - return -EINVAL; - } - if (cmd == VIDIOC_G_EXT_CTRLS) - ctrl->value = old; - else - ctrl->value = new; - return 0; -} - -static int saa6752hs_qctrl(struct saa6752hs_mpeg_params *params, - struct v4l2_queryctrl *qctrl) -{ - int err; - - switch (qctrl->id) { - case V4L2_CID_MPEG_AUDIO_ENCODING: - return v4l2_ctrl_query_fill(qctrl, - V4L2_MPEG_AUDIO_ENCODING_LAYER_2, - V4L2_MPEG_AUDIO_ENCODING_LAYER_2, 1, - V4L2_MPEG_AUDIO_ENCODING_LAYER_2); - - case V4L2_CID_MPEG_AUDIO_L2_BITRATE: - return v4l2_ctrl_query_fill(qctrl, - V4L2_MPEG_AUDIO_L2_BITRATE_256K, - V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1, - V4L2_MPEG_AUDIO_L2_BITRATE_256K); - - case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: - return v4l2_ctrl_query_fill(qctrl, - V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, - V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, 1, - V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000); - - case V4L2_CID_MPEG_VIDEO_ENCODING: - return v4l2_ctrl_query_fill(qctrl, - V4L2_MPEG_VIDEO_ENCODING_MPEG_2, - V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1, - V4L2_MPEG_VIDEO_ENCODING_MPEG_2); - - case V4L2_CID_MPEG_VIDEO_ASPECT: - return v4l2_ctrl_query_fill(qctrl, - V4L2_MPEG_VIDEO_ASPECT_4x3, - V4L2_MPEG_VIDEO_ASPECT_16x9, 1, - V4L2_MPEG_VIDEO_ASPECT_4x3); - - case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: - err = v4l2_ctrl_query_fill_std(qctrl); - if (err == 0 && - params->vi_bitrate_mode == - V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) - qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; - return err; - - case V4L2_CID_MPEG_STREAM_TYPE: - return v4l2_ctrl_query_fill(qctrl, - V4L2_MPEG_STREAM_TYPE_MPEG2_TS, - V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1, - V4L2_MPEG_STREAM_TYPE_MPEG2_TS); - - case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: - case V4L2_CID_MPEG_VIDEO_BITRATE: - case V4L2_CID_MPEG_STREAM_PID_PMT: - case V4L2_CID_MPEG_STREAM_PID_AUDIO: - case V4L2_CID_MPEG_STREAM_PID_VIDEO: - case V4L2_CID_MPEG_STREAM_PID_PCR: - return v4l2_ctrl_query_fill_std(qctrl); - - default: - break; - } - return -EINVAL; -} - -static int saa6752hs_qmenu(struct saa6752hs_mpeg_params *params, - struct v4l2_querymenu *qmenu) -{ - static const char *mpeg_audio_l2_bitrate[] = { - "", - "", - "", - "", - "", - "", - "", - "", - "", - "", - "", - "256 kbps", - "", - "384 kbps", - NULL - }; - struct v4l2_queryctrl qctrl; - int err; - - qctrl.id = qmenu->id; - err = saa6752hs_qctrl(params, &qctrl); - if (err) - return err; - if (qmenu->id == V4L2_CID_MPEG_AUDIO_L2_BITRATE) - return v4l2_ctrl_query_menu(qmenu, &qctrl, - mpeg_audio_l2_bitrate); - return v4l2_ctrl_query_menu(qmenu, &qctrl, - v4l2_ctrl_get_menu(qmenu->id)); -} - -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) { - case V4L2_MPEG_VIDEO_ASPECT_16x9: - buf[6] = buf2[1] | 0x40; - break; - case V4L2_MPEG_VIDEO_ASPECT_4x3: - 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; - - - if (NULL == (h = kzalloc(sizeof(*h), GFP_KERNEL))) - return -ENOMEM; - 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); - - v4l_info(&h->client,"saa6752hs: chip found @ 0x%x\n", addr<<1); - 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_ext_controls *ctrls = arg; - struct saa6752hs_mpeg_params params; - int err = 0; - int i; - - switch (cmd) { - case VIDIOC_S_EXT_CTRLS: - if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) - return -EINVAL; - if (ctrls->count == 0) { - /* apply settings and start encoder */ - saa6752hs_init(client); - break; - } - /* fall through */ - case VIDIOC_TRY_EXT_CTRLS: - case VIDIOC_G_EXT_CTRLS: - if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) - return -EINVAL; - params = h->params; - for (i = 0; i < ctrls->count; i++) { - if ((err = handle_ctrl(¶ms, ctrls->controls + i, cmd))) { - ctrls->error_idx = i; - return err; - } - } - h->params = params; - break; - case VIDIOC_QUERYCTRL: - return saa6752hs_qctrl(&h->params, arg); - case VIDIOC_QUERYMENU: - return saa6752hs_qmenu(&h->params, arg); - 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 = { - .driver = { - .name = "saa6752hs", - }, - .id = I2C_DRIVERID_SAA6752HS, - .attach_adapter = saa6752hs_probe, - .detach_client = saa6752hs_detach, - .command = saa6752hs_command, -}; - -static struct i2c_client client_template = -{ - .name = "saa6752hs", - .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: - */ |