/* 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> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License vs 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., 675 Mvss Ave, Cambridge, MA 02139, USA. */ #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-device.h> #include <media/v4l2-common.h> #include <media/v4l2-chip-ident.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) 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; int chip; 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 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 u8 PMT_AC3[] = { 0xc2, /* i2c register */ 0x01, /* table number for encoder(1) */ 0x47, /* sync */ 0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */ 0x10, /* PMT PID (0x0010) */ 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ 0x00, /* PSI pointer to start of table */ 0x02, /* TID (2) */ 0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */ 0x00, 0x01, /* program_number(1) */ 0xc1, /* version_number(0), current_next_indicator(1) */ 0x00, 0x00, /* section_number(0), last_section_number(0) */ 0xe1, 0x04, /* PCR_PID (0x0104) */ 0xf0, 0x00, /* program_info_length(0) */ 0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */ 0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */ 0x6a, /* AC3 */ 0x01, /* Descriptor_length(1) */ 0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */ 0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */ }; 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_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] = 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 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 & 0xff; 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, 0x71, 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, 0x80, params->vi_bitrate); /* set the max bitrate */ set_reg16(client, 0x81, params->vi_bitrate_peak); tot_bitrate = params->vi_bitrate_peak; } else { /* set the target bitrate (no max bitrate for CBR) */ set_reg16(client, 0x81, params->vi_bitrate); tot_bitrate = params->vi_bitrate; } /* set the audio encoding */ set_reg8(client, 0x93, 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, 0x94, 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, 0xb1, tot_bitrate); return 0; } static int get_ctrl(int has_ac3, struct saa6752hs_mpeg_params *params, struct v4l2_ext_control *ctrl) { switch (ctrl->id) { case V4L2_CID_MPEG_STREAM_TYPE: ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS; break; case V4L2_CID_MPEG_STREAM_PID_PMT: ctrl->value = params->ts_pid_pmt; break; case V4L2_CID_MPEG_STREAM_PID_AUDIO: ctrl->value = params->ts_pid_audio; break; case V4L2_CID_MPEG_STREAM_PID_VIDEO: ctrl->value = params->ts_pid_video; break; case V4L2_CID_MPEG_STREAM_PID_PCR: ctrl->value = params->ts_pid_pcr; break; case V4L2_CID_MPEG_AUDIO_ENCODING: ctrl->value = params->au_encoding; break; case V4L2_CID_MPEG_AUDIO_L2_BITRATE: ctrl->value = params->au_l2_bitrate; break; case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: if (!has_ac3) return -EINVAL; ctrl->value = params->au_ac3_bitrate; break; case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: ctrl->value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000; break; case V4L2_CID_MPEG_VIDEO_ENCODING: ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_2; break; case V4L2_CID_MPEG_VIDEO_ASPECT: ctrl->value = params->vi_aspect; break; case V4L2_CID_MPEG_VIDEO_BITRATE: ctrl->value = params->vi_bitrate * 1000; break; case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: ctrl->value = params->vi_bitrate_peak * 1000; break; case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: ctrl->value = params->vi_bitrate_mode; break; default: return -EINVAL; } return 0; } static int handle_ctrl(int has_ac3, struct saa6752hs_mpeg_params *params, struct v4l2_ext_control *ctrl, int set) { int old = 0, new; 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 = params->au_encoding; if (set && new != V4L2_MPEG_AUDIO_ENCODING_LAYER_2 && (!has_ac3 || new != V4L2_MPEG_AUDIO_ENCODING_AC3)) return -ERANGE; params->au_encoding = new; 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_AC3_BITRATE: if (!has_ac3) return -EINVAL; old = params->au_ac3_bitrate; if (set && new != V4L2_MPEG_AUDIO_AC3_BITRATE_256K && new != V4L2_MPEG_AUDIO_AC3_BITRATE_384K) return -ERANGE; if (new <= V4L2_MPEG_AUDIO_AC3_BITRATE_256K) new = V4L2_MPEG_AUDIO_AC3_BITRATE_256K; else new = V4L2_MPEG_AUDIO_AC3_BITRATE_384K; params->au_ac3_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; } ctrl->value = new; return 0; } static int saa6752hs_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qctrl) { struct saa6752hs_state *h = to_state(sd); struct saa6752hs_mpeg_params *params = &h->params; int err; switch (qctrl->id) { case V4L2_CID_MPEG_AUDIO_ENCODING: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_ENCODING_LAYER_2, h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : 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_AC3_BITRATE: if (!h->has_ac3) return -EINVAL; return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_AUDIO_AC3_BITRATE_256K, V4L2_MPEG_AUDIO_AC3_BITRATE_384K, 1, V4L2_MPEG_AUDIO_AC3_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(qctrl, 0, 27000000, 1, 8000000); 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: return v4l2_ctrl_query_fill(qctrl, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); case V4L2_CID_MPEG_VIDEO_BITRATE: return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000); case V4L2_CID_MPEG_STREAM_PID_PMT: return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 16); case V4L2_CID_MPEG_STREAM_PID_AUDIO: return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 260); case V4L2_CID_MPEG_STREAM_PID_VIDEO: return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 256); case V4L2_CID_MPEG_STREAM_PID_PCR: return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 259); default: break; } return -EINVAL; } static int saa6752hs_querymenu(struct v4l2_subdev *sd, struct v4l2_querymenu *qmenu) { static const u32 mpeg_audio_encoding[] = { V4L2_MPEG_AUDIO_ENCODING_LAYER_2, V4L2_CTRL_MENU_IDS_END }; static const u32 mpeg_audio_ac3_encoding[] = { V4L2_MPEG_AUDIO_ENCODING_LAYER_2, V4L2_MPEG_AUDIO_ENCODING_AC3, V4L2_CTRL_MENU_IDS_END }; static u32 mpeg_audio_l2_bitrate[] = { V4L2_MPEG_AUDIO_L2_BITRATE_256K, V4L2_MPEG_AUDIO_L2_BITRATE_384K, V4L2_CTRL_MENU_IDS_END }; static u32 mpeg_audio_ac3_bitrate[] = { V4L2_MPEG_AUDIO_AC3_BITRATE_256K, V4L2_MPEG_AUDIO_AC3_BITRATE_384K, V4L2_CTRL_MENU_IDS_END }; struct saa6752hs_state *h = to_state(sd); struct v4l2_queryctrl qctrl; int err; qctrl.id = qmenu->id; err = saa6752hs_queryctrl(sd, &qctrl); if (err) return err; switch (qmenu->id) { case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return v4l2_ctrl_query_menu_valid_items(qmenu, mpeg_audio_l2_bitrate); case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: if (!h->has_ac3) return -EINVAL; return v4l2_ctrl_query_menu_valid_items(qmenu, mpeg_audio_ac3_bitrate); case V4L2_CID_MPEG_AUDIO_ENCODING: return v4l2_ctrl_query_menu_valid_items(qmenu, h->has_ac3 ? mpeg_audio_ac3_encoding : mpeg_audio_encoding); } return v4l2_ctrl_query_menu(qmenu, &qctrl, NULL); } 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, 0x41, h->video_format); /* Set number of lines in input signal */ set_reg8(client, 0x40, (h->standard & V4L2_STD_525_60) ? 1 : 0); /* set bitrate */ saa6752hs_set_bitrate(client, h); /* Set GOP structure {3, 13} */ set_reg16(client, 0x72, 0x030d); /* Set minimum Q-scale {4} */ set_reg8(client, 0x82, 0x04); /* Set maximum Q-scale {12} */ set_reg8(client, 0x83, 0x0c); /* Set Output Protocol */ set_reg8(client, 0xd0, 0x81); /* Set video output stream format {TS} */ set_reg8(client, 0xb0, 0x05); /* Set leading null byte for TS */ set_reg16(client, 0xf6, leading_null_bytes); /* 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 */ 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] = 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], size - 7 - 4); localPMT[size - 4] = (crc >> 24) & 0xFF; localPMT[size - 3] = (crc >> 16) & 0xFF; localPMT[size - 2] = (crc >> 8) & 0xFF; localPMT[size - 1] = crc & 0xFF; /* Set Audio PID */ set_reg16(client, 0xc1, h->params.ts_pid_audio); /* Set Video PID */ set_reg16(client, 0xc0, h->params.ts_pid_video); /* Set PCR PID */ set_reg16(client, 0xc4, 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, 0xa4, 1); set_reg8(client, 0xa4, 0); /* 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; } buf[7] = buf2[2]; buf[8] = buf2[3]; i2c_master_send(client, buf, 9); return 0; } static int saa6752hs_do_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls, int set) { struct saa6752hs_state *h = to_state(sd); struct saa6752hs_mpeg_params params; int i; if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) return -EINVAL; params = h->params; for (i = 0; i < ctrls->count; i++) { int err = handle_ctrl(h->has_ac3, ¶ms, ctrls->controls + i, set); if (err) { ctrls->error_idx = i; return err; } } if (set) h->params = params; return 0; } static int saa6752hs_s_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls) { return saa6752hs_do_ext_ctrls(sd, ctrls, 1); } static int saa6752hs_try_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls) { return saa6752hs_do_ext_ctrls(sd, ctrls, 0); } static int saa6752hs_g_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls) { struct saa6752hs_state *h = to_state(sd); int i; if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) return -EINVAL; for (i = 0; i < ctrls->count; i++) { int err = get_ctrl(h->has_ac3, &h->params, ctrls->controls + i); if (err) { ctrls->error_idx = i; return err; } } return 0; } static int saa6752hs_g_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f) { struct saa6752hs_state *h = to_state(sd); 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 = V4L2_MBUS_FMT_FIXED; f->field = V4L2_FIELD_INTERLACED; f->colorspace = V4L2_COLORSPACE_SMPTE170M; return 0; } static int saa6752hs_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f) { struct saa6752hs_state *h = to_state(sd); int dist_352, dist_480, dist_720; if (f->code != V4L2_MBUS_FMT_FIXED) return -EINVAL; /* 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->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; h->video_format = SAA6752HS_VF_D1; } else if (dist_480 < dist_352) { f->width = 480; f->height = 576; h->video_format = SAA6752HS_VF_2_3_D1; } else { f->width = 352; if (abs(f->height - 576) < abs(f->height - 288)) { f->height = 576; h->video_format = SAA6752HS_VF_1_2_D1; } else { f->height = 288; h->video_format = SAA6752HS_VF_SIF; } } f->field = V4L2_FIELD_INTERLACED; f->colorspace = V4L2_COLORSPACE_SMPTE170M; 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 int saa6752hs_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa6752hs_state *h = to_state(sd); return v4l2_chip_ident_i2c_client(client, chip, h->chip, h->revision); } /* ----------------------------------------------------------------------- */ static const struct v4l2_subdev_core_ops saa6752hs_core_ops = { .g_chip_ident = saa6752hs_g_chip_ident, .init = saa6752hs_init, .queryctrl = saa6752hs_queryctrl, .querymenu = saa6752hs_querymenu, .g_ext_ctrls = saa6752hs_g_ext_ctrls, .s_ext_ctrls = saa6752hs_s_ext_ctrls, .try_ext_ctrls = saa6752hs_try_ext_ctrls, .s_std = saa6752hs_s_std, }; static const struct v4l2_subdev_video_ops saa6752hs_video_ops = { .s_mbus_fmt = saa6752hs_s_mbus_fmt, .g_mbus_fmt = saa6752hs_g_mbus_fmt, }; static const struct v4l2_subdev_ops saa6752hs_ops = { .core = &saa6752hs_core_ops, .video = &saa6752hs_video_ops, }; static int saa6752hs_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct saa6752hs_state *h = kzalloc(sizeof(*h), GFP_KERNEL); struct v4l2_subdev *sd; u8 addr = 0x13; u8 data[12]; v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); 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->chip = V4L2_IDENT_SAA6752HS; h->revision = (data[8] << 8) | data[9]; h->has_ac3 = 0; if (h->revision == 0x0206) { h->chip = V4L2_IDENT_SAA6752HS_AC3; h->has_ac3 = 1; v4l_info(client, "support AC-3\n"); } h->params = param_defaults; h->standard = 0; /* Assume 625 input lines */ return 0; } static int saa6752hs_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); v4l2_device_unregister_subdev(sd); kfree(to_state(sd)); return 0; } static const struct i2c_device_id saa6752hs_id[] = { { "saa6752hs", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, saa6752hs_id); static struct i2c_driver saa6752hs_driver = { .driver = { .owner = THIS_MODULE, .name = "saa6752hs", }, .probe = saa6752hs_probe, .remove = saa6752hs_remove, .id_table = saa6752hs_id, }; module_i2c_driver(saa6752hs_driver); /* * Overrides for Emacs so that we follow Linus's tabbing style. * --------------------------------------------------------------------------- * Local variables: * c-basic-offset: 8 * End: */