[deliverable/linux.git] / drivers / media / video / saa7134 / saa6752hs.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 = {
	.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",
	.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:
 */
Commit	Line	Data
1da177e4 LT	1	#include <linux/module.h>
	2	#include <linux/kernel.h>
	3	#include <linux/sched.h>
	4	#include <linux/string.h>
	5	#include <linux/timer.h>
	6	#include <linux/delay.h>
	7	#include <linux/errno.h>
	8	#include <linux/slab.h>
	9	#include <linux/poll.h>
	10	#include <linux/i2c.h>
	11	#include <linux/types.h>
	12	#include <linux/videodev.h>
	13	#include <linux/init.h>
	14	#include <linux/crc32.h>
	15
1da177e4 LT	16
	17	#define MPEG_VIDEO_TARGET_BITRATE_MAX 27000
	18	#define MPEG_VIDEO_MAX_BITRATE_MAX 27000
	19	#define MPEG_TOTAL_TARGET_BITRATE_MAX 27000
	20	#define MPEG_PID_MAX ((1 << 14) - 1)
	21
	22	/* Addresses to scan */
	23	static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
1da177e4 LT	24	I2C_CLIENT_INSMOD;
	25
	26	MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
	27	MODULE_AUTHOR("Andrew de Quincey");
	28	MODULE_LICENSE("GPL");
	29
	30	static struct i2c_driver driver;
	31	static struct i2c_client client_template;
	32
0a4c9c93 FC	33	enum saa6752hs_videoformat {
	34	SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */
	35	SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
	36	SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
	37	SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */
	38	SAA6752HS_VF_UNKNOWN,
	39	};
	40
	41	static const struct v4l2_format v4l2_format_table[] =
	42	{
ac19ecc6 MCC	43	[SAA6752HS_VF_D1] =
	44	{ .fmt = { .pix = { .width = 720, .height = 576 }}},
	45	[SAA6752HS_VF_2_3_D1] =
	46	{ .fmt = { .pix = { .width = 480, .height = 576 }}},
	47	[SAA6752HS_VF_1_2_D1] =
	48	{ .fmt = { .pix = { .width = 352, .height = 576 }}},
	49	[SAA6752HS_VF_SIF] =
	50	{ .fmt = { .pix = { .width = 352, .height = 288 }}},
	51	[SAA6752HS_VF_UNKNOWN] =
	52	{ .fmt = { .pix = { .width = 0, .height = 0}}},
0a4c9c93 FC	53	};
0a4c9c93 FC	54
1da177e4 LT	55	struct saa6752hs_state {
	56	struct i2c_client client;
	57	struct v4l2_mpeg_compression params;
0a4c9c93	58	enum saa6752hs_videoformat video_format;
9b71521b	59	v4l2_std_id standard;
1da177e4 LT	60	};
	61
	62	enum saa6752hs_command {
	63	SAA6752HS_COMMAND_RESET = 0,
	64	SAA6752HS_COMMAND_STOP = 1,
	65	SAA6752HS_COMMAND_START = 2,
	66	SAA6752HS_COMMAND_PAUSE = 3,
	67	SAA6752HS_COMMAND_RECONFIGURE = 4,
	68	SAA6752HS_COMMAND_SLEEP = 5,
	69	SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
	70
	71	SAA6752HS_COMMAND_MAX
	72	};
	73
	74	/* ---------------------------------------------------------------------- */
	75
	76	static u8 PAT[] = {
9b71521b RB	77	0xc2, /* i2c register */
9b71521b RB	78	0x00, /* table number for encoder */
1da177e4	79
9b71521b RB	80	0x47, /* sync */
	81	0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
	82	0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
1da177e4	83
9b71521b	84	0x00, /* PSI pointer to start of table */
1da177e4	85
9b71521b RB	86	0x00, /* tid(0) */
9b71521b RB	87	0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
1da177e4	88
9b71521b	89	0x00, 0x01, /* transport_stream_id(1) */
1da177e4	90
9b71521b	91	0xc1, /* version_number(0), current_next_indicator(1) */
1da177e4	92
9b71521b	93	0x00, 0x00, /* section_number(0), last_section_number(0) */
1da177e4	94
9b71521b	95	0x00, 0x01, /* program_number(1) */
1da177e4	96
9b71521b	97	0xe0, 0x00, /* PMT PID */
1da177e4	98
9b71521b	99	0x00, 0x00, 0x00, 0x00 /* CRC32 */
1da177e4 LT	100	};
	101
	102	static u8 PMT[] = {
9b71521b RB	103	0xc2, /* i2c register */
9b71521b RB	104	0x01, /* table number for encoder */
1da177e4	105
9b71521b RB	106	0x47, /* sync */
	107	0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
	108	0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
1da177e4	109
9b71521b	110	0x00, /* PSI pointer to start of table */
1da177e4	111
9b71521b RB	112	0x02, /* tid(2) */
9b71521b RB	113	0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
1da177e4	114
9b71521b	115	0x00, 0x01, /* program_number(1) */
1da177e4	116
9b71521b	117	0xc1, /* version_number(0), current_next_indicator(1) */
1da177e4	118
9b71521b	119	0x00, 0x00, /* section_number(0), last_section_number(0) */
1da177e4	120
9b71521b	121	0xe0, 0x00, /* PCR_PID */
1da177e4	122
9b71521b	123	0xf0, 0x00, /* program_info_length(0) */
1da177e4	124
9b71521b RB	125	0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
9b71521b RB	126	0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
1da177e4	127
9b71521b	128	0x00, 0x00, 0x00, 0x00 /* CRC32 */
1da177e4 LT	129	};
	130
	131	static struct v4l2_mpeg_compression param_defaults =
	132	{
	133	.st_type = V4L2_MPEG_TS_2,
	134	.st_bitrate = {
	135	.mode = V4L2_BITRATE_CBR,
	136	.target = 7000,
	137	},
	138
	139	.ts_pid_pmt = 16,
	140	.ts_pid_video = 260,
	141	.ts_pid_audio = 256,
	142	.ts_pid_pcr = 259,
	143
	144	.vi_type = V4L2_MPEG_VI_2,
	145	.vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
	146	.vi_bitrate = {
	147	.mode = V4L2_BITRATE_VBR,
	148	.target = 4000,
	149	.max = 6000,
	150	},
	151
	152	.au_type = V4L2_MPEG_AU_2_II,
	153	.au_bitrate = {
	154	.mode = V4L2_BITRATE_CBR,
	155	.target = 256,
	156	},
	157
1da177e4 LT	158	};
	159
	160	/* ---------------------------------------------------------------------- */
	161
	162	static int saa6752hs_chip_command(struct i2c_client* client,
	163	enum saa6752hs_command command)
	164	{
	165	unsigned char buf[3];
	166	unsigned long timeout;
	167	int status = 0;
	168
9b71521b	169	/* execute the command */
1da177e4	170	switch(command) {
4ac97914 MCC	171	case SAA6752HS_COMMAND_RESET:
4ac97914 MCC	172	buf[0] = 0x00;
1da177e4 LT	173	break;
	174
	175	case SAA6752HS_COMMAND_STOP:
4ac97914	176	buf[0] = 0x03;
1da177e4 LT	177	break;
	178
	179	case SAA6752HS_COMMAND_START:
4ac97914	180	buf[0] = 0x02;
1da177e4 LT	181	break;
	182
	183	case SAA6752HS_COMMAND_PAUSE:
4ac97914	184	buf[0] = 0x04;
1da177e4 LT	185	break;
	186
	187	case SAA6752HS_COMMAND_RECONFIGURE:
	188	buf[0] = 0x05;
	189	break;
	190
4ac97914 MCC	191	case SAA6752HS_COMMAND_SLEEP:
4ac97914 MCC	192	buf[0] = 0x06;
1da177e4 LT	193	break;
1da177e4 LT	194
4ac97914	195	case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
1da177e4 LT	196	buf[0] = 0x07;
	197	break;
	198
	199	default:
	200	return -EINVAL;
	201	}
	202
4ac97914	203	/* set it and wait for it to be so */
1da177e4 LT	204	i2c_master_send(client, buf, 1);
	205	timeout = jiffies + HZ * 3;
	206	for (;;) {
9b71521b	207	/* get the current status */
1da177e4	208	buf[0] = 0x10;
4ac97914	209	i2c_master_send(client, buf, 1);
1da177e4 LT	210	i2c_master_recv(client, buf, 1);
	211
	212	if (!(buf[0] & 0x20))
	213	break;
	214	if (time_after(jiffies,timeout)) {
	215	status = -ETIMEDOUT;
	216	break;
	217	}
	218
1da177e4 LT	219	msleep(10);
	220	}
	221
9b71521b	222	/* delay a bit to let encoder settle */
1da177e4 LT	223	msleep(50);
1da177e4 LT	224
4ac97914	225	return status;
1da177e4 LT	226	}
	227
	228
	229	static int saa6752hs_set_bitrate(struct i2c_client* client,
	230	struct v4l2_mpeg_compression* params)
	231	{
4ac97914	232	u8 buf[3];
1da177e4	233
9b71521b	234	/* set the bitrate mode */
1da177e4 LT	235	buf[0] = 0x71;
	236	buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
	237	i2c_master_send(client, buf, 2);
	238
9b71521b	239	/* set the video bitrate */
1da177e4	240	if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
9b71521b	241	/* set the target bitrate */
1da177e4 LT	242	buf[0] = 0x80;
1da177e4 LT	243	buf[1] = params->vi_bitrate.target >> 8;
4ac97914	244	buf[2] = params->vi_bitrate.target & 0xff;
1da177e4 LT	245	i2c_master_send(client, buf, 3);
1da177e4 LT	246
9b71521b	247	/* set the max bitrate */
1da177e4 LT	248	buf[0] = 0x81;
1da177e4 LT	249	buf[1] = params->vi_bitrate.max >> 8;
4ac97914	250	buf[2] = params->vi_bitrate.max & 0xff;
1da177e4 LT	251	i2c_master_send(client, buf, 3);
1da177e4 LT	252	} else {
9b71521b	253	/* set the target bitrate (no max bitrate for CBR) */
4ac97914	254	buf[0] = 0x81;
1da177e4	255	buf[1] = params->vi_bitrate.target >> 8;
4ac97914	256	buf[2] = params->vi_bitrate.target & 0xff;
1da177e4 LT	257	i2c_master_send(client, buf, 3);
	258	}
	259
9b71521b	260	/* set the audio bitrate */
4ac97914	261	buf[0] = 0x94;
1da177e4 LT	262	buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
	263	i2c_master_send(client, buf, 2);
	264
9b71521b	265	/* set the total bitrate */
1da177e4	266	buf[0] = 0xb1;
4ac97914 MCC	267	buf[1] = params->st_bitrate.target >> 8;
4ac97914 MCC	268	buf[2] = params->st_bitrate.target & 0xff;
1da177e4 LT	269	i2c_master_send(client, buf, 3);
1da177e4 LT	270
1da177e4 LT	271	return 0;
	272	}
	273
0a4c9c93 FC	274	static void saa6752hs_set_subsampling(struct i2c_client* client,
	275	struct v4l2_format* f)
	276	{
	277	struct saa6752hs_state *h = i2c_get_clientdata(client);
	278	int dist_352, dist_480, dist_720;
	279
	280	/*
	281	FIXME: translate and round width/height into EMPRESS
	282	subsample type:
	283
	284	type \| PAL \| NTSC
	285	---------------------------
	286	SIF \| 352x288 \| 352x240
	287	1/2 D1 \| 352x576 \| 352x480
	288	2/3 D1 \| 480x576 \| 480x480
	289	D1 \| 720x576 \| 720x480
	290	*/
	291
	292	dist_352 = abs(f->fmt.pix.width - 352);
	293	dist_480 = abs(f->fmt.pix.width - 480);
	294	dist_720 = abs(f->fmt.pix.width - 720);
	295	if (dist_720 < dist_480) {
	296	f->fmt.pix.width = 720;
	297	f->fmt.pix.height = 576;
	298	h->video_format = SAA6752HS_VF_D1;
	299	}
	300	else if (dist_480 < dist_352) {
	301	f->fmt.pix.width = 480;
	302	f->fmt.pix.height = 576;
	303	h->video_format = SAA6752HS_VF_2_3_D1;
	304	}
	305	else {
	306	f->fmt.pix.width = 352;
	307	if (abs(f->fmt.pix.height - 576) <
	308	abs(f->fmt.pix.height - 288)) {
	309	f->fmt.pix.height = 576;
	310	h->video_format = SAA6752HS_VF_1_2_D1;
	311	}
	312	else {
	313	f->fmt.pix.height = 288;
	314	h->video_format = SAA6752HS_VF_SIF;
	315	}
	316	}
	317	}
	318
1da177e4 LT	319
	320	static void saa6752hs_set_params(struct i2c_client* client,
	321	struct v4l2_mpeg_compression* params)
	322	{
	323	struct saa6752hs_state *h = i2c_get_clientdata(client);
	324
	325	/* check PIDs */
	326	if (params->ts_pid_pmt <= MPEG_PID_MAX)
	327	h->params.ts_pid_pmt = params->ts_pid_pmt;
	328	if (params->ts_pid_pcr <= MPEG_PID_MAX)
	329	h->params.ts_pid_pcr = params->ts_pid_pcr;
	330	if (params->ts_pid_video <= MPEG_PID_MAX)
	331	h->params.ts_pid_video = params->ts_pid_video;
	332	if (params->ts_pid_audio <= MPEG_PID_MAX)
	333	h->params.ts_pid_audio = params->ts_pid_audio;
	334
	335	/* check bitrate parameters */
	336	if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) \|\|
	337	(params->vi_bitrate.mode == V4L2_BITRATE_VBR))
	338	h->params.vi_bitrate.mode = params->vi_bitrate.mode;
	339	if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
	340	h->params.st_bitrate.target = params->st_bitrate.target;
	341	if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
	342	h->params.vi_bitrate.target = params->vi_bitrate.target;
	343	if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
	344	h->params.vi_bitrate.max = params->vi_bitrate.max;
	345	if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
	346	h->params.au_bitrate.target = params->au_bitrate.target;
	347
	348	/* aspect ratio */
	349	if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 \|\|
	350	params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9)
	351	h->params.vi_aspect_ratio = params->vi_aspect_ratio;
	352
	353	/* range checks */
	354	if (h->params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
	355	h->params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
	356	if (h->params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
	357	h->params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
	358	if (h->params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
	359	h->params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
	360	if (h->params.au_bitrate.target <= 256)
	361	h->params.au_bitrate.target = 256;
	362	else
	363	h->params.au_bitrate.target = 384;
	364	}
	365
	366	static int saa6752hs_init(struct i2c_client* client)
	367	{
	368	unsigned char buf[9], buf2[4];
	369	struct saa6752hs_state *h;
	370	u32 crc;
	371	unsigned char localPAT[256];
	372	unsigned char localPMT[256];
	373
	374	h = i2c_get_clientdata(client);
	375
9b71521b	376	/* Set video format - must be done first as it resets other settings */
1da177e4	377	buf[0] = 0x41;
0a4c9c93	378	buf[1] = h->video_format;
1da177e4 LT	379	i2c_master_send(client, buf, 2);
1da177e4 LT	380
9b71521b RB	381	/* Set number of lines in input signal */
	382	buf[0] = 0x40;
	383	buf[1] = 0x00;
	384	if (h->standard & V4L2_STD_525_60)
	385	buf[1] = 0x01;
	386	i2c_master_send(client, buf, 2);
	387
4ac97914 MCC	388	/* set bitrate */
4ac97914 MCC	389	saa6752hs_set_bitrate(client, &h->params);
1da177e4	390
9b71521b	391	/* Set GOP structure {3, 13} */
1da177e4 LT	392	buf[0] = 0x72;
	393	buf[1] = 0x03;
	394	buf[2] = 0x0D;
	395	i2c_master_send(client,buf,3);
	396
9b71521b	397	/* Set minimum Q-scale {4} */
1da177e4 LT	398	buf[0] = 0x82;
	399	buf[1] = 0x04;
	400	i2c_master_send(client,buf,2);
	401
9b71521b	402	/* Set maximum Q-scale {12} */
1da177e4 LT	403	buf[0] = 0x83;
	404	buf[1] = 0x0C;
	405	i2c_master_send(client,buf,2);
	406
9b71521b	407	/* Set Output Protocol */
1da177e4 LT	408	buf[0] = 0xD0;
	409	buf[1] = 0x81;
	410	i2c_master_send(client,buf,2);
	411
9b71521b	412	/* Set video output stream format {TS} */
1da177e4 LT	413	buf[0] = 0xB0;
	414	buf[1] = 0x05;
	415	i2c_master_send(client,buf,2);
	416
	417	/* compute PAT */
	418	memcpy(localPAT, PAT, sizeof(PAT));
	419	localPAT[17] = 0xe0 \| ((h->params.ts_pid_pmt >> 8) & 0x0f);
	420	localPAT[18] = h->params.ts_pid_pmt & 0xff;
	421	crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
	422	localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
	423	localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
	424	localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
	425	localPAT[sizeof(PAT) - 1] = crc & 0xFF;
	426
	427	/* compute PMT */
4ac97914 MCC	428	memcpy(localPMT, PMT, sizeof(PMT));
	429	localPMT[3] = 0x40 \| ((h->params.ts_pid_pmt >> 8) & 0x0f);
	430	localPMT[4] = h->params.ts_pid_pmt & 0xff;
1da177e4 LT	431	localPMT[15] = 0xE0 \| ((h->params.ts_pid_pcr >> 8) & 0x0F);
	432	localPMT[16] = h->params.ts_pid_pcr & 0xFF;
	433	localPMT[20] = 0xE0 \| ((h->params.ts_pid_video >> 8) & 0x0F);
	434	localPMT[21] = h->params.ts_pid_video & 0xFF;
	435	localPMT[25] = 0xE0 \| ((h->params.ts_pid_audio >> 8) & 0x0F);
	436	localPMT[26] = h->params.ts_pid_audio & 0xFF;
	437	crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
	438	localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
	439	localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
	440	localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
	441	localPMT[sizeof(PMT) - 1] = crc & 0xFF;
	442
9b71521b	443	/* Set Audio PID */
1da177e4 LT	444	buf[0] = 0xC1;
	445	buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
	446	buf[2] = h->params.ts_pid_audio & 0xFF;
	447	i2c_master_send(client,buf,3);
	448
9b71521b	449	/* Set Video PID */
1da177e4 LT	450	buf[0] = 0xC0;
	451	buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
	452	buf[2] = h->params.ts_pid_video & 0xFF;
	453	i2c_master_send(client,buf,3);
	454
4ac97914	455	/* Set PCR PID */
1da177e4 LT	456	buf[0] = 0xC4;
	457	buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
	458	buf[2] = h->params.ts_pid_pcr & 0xFF;
	459	i2c_master_send(client,buf,3);
	460
9b71521b	461	/* Send SI tables */
1da177e4 LT	462	i2c_master_send(client,localPAT,sizeof(PAT));
	463	i2c_master_send(client,localPMT,sizeof(PMT));
	464
9b71521b	465	/* mute then unmute audio. This removes buzzing artefacts */
1da177e4 LT	466	buf[0] = 0xa4;
	467	buf[1] = 1;
	468	i2c_master_send(client, buf, 2);
4ac97914	469	buf[1] = 0;
1da177e4 LT	470	i2c_master_send(client, buf, 2);
1da177e4 LT	471
9b71521b	472	/* start it going */
1da177e4 LT	473	saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
1da177e4 LT	474
9b71521b	475	/* readout current state */
1da177e4 LT	476	buf[0] = 0xE1;
	477	buf[1] = 0xA7;
	478	buf[2] = 0xFE;
	479	buf[3] = 0x82;
	480	buf[4] = 0xB0;
	481	i2c_master_send(client, buf, 5);
	482	i2c_master_recv(client, buf2, 4);
	483
9b71521b	484	/* change aspect ratio */
1da177e4 LT	485	buf[0] = 0xE0;
	486	buf[1] = 0xA7;
	487	buf[2] = 0xFE;
	488	buf[3] = 0x82;
	489	buf[4] = 0xB0;
	490	buf[5] = buf2[0];
	491	switch(h->params.vi_aspect_ratio) {
	492	case V4L2_MPEG_ASPECT_16_9:
	493	buf[6] = buf2[1] \| 0x40;
	494	break;
	495	case V4L2_MPEG_ASPECT_4_3:
	496	default:
	497	buf[6] = buf2[1] & 0xBF;
	498	break;
	499	break;
	500	}
	501	buf[7] = buf2[2];
	502	buf[8] = buf2[3];
	503	i2c_master_send(client, buf, 9);
	504
1da177e4 LT	505	return 0;
	506	}
	507
	508	static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
	509	{
	510	struct saa6752hs_state *h;
	511
4ac97914	512	printk("saa6752hs: chip found @ 0x%x\n", addr<<1);
1da177e4	513
4ac97914 MCC	514	if (NULL == (h = kmalloc(sizeof(*h), GFP_KERNEL)))
4ac97914 MCC	515	return -ENOMEM;
1da177e4 LT	516	memset(h,0,sizeof(*h));
	517	h->client = client_template;
	518	h->params = param_defaults;
	519	h->client.adapter = adap;
	520	h->client.addr = addr;
	521
9b71521b RB	522	/* Assume 625 input lines */
	523	h->standard = 0;
	524
1da177e4	525	i2c_set_clientdata(&h->client, h);
afd1a0c9	526	i2c_attach_client(&h->client);
674434c6	527
1da177e4 LT	528	return 0;
	529	}
	530
	531	static int saa6752hs_probe(struct i2c_adapter *adap)
	532	{
	533	if (adap->class & I2C_CLASS_TV_ANALOG)
	534	return i2c_probe(adap, &addr_data, saa6752hs_attach);
	535	return 0;
	536	}
	537
	538	static int saa6752hs_detach(struct i2c_client *client)
	539	{
	540	struct saa6752hs_state *h;
	541
	542	h = i2c_get_clientdata(client);
	543	i2c_detach_client(client);
	544	kfree(h);
	545	return 0;
	546	}
	547
	548	static int
	549	saa6752hs_command(struct i2c_client client, unsigned int cmd, void arg)
	550	{
	551	struct saa6752hs_state *h = i2c_get_clientdata(client);
	552	struct v4l2_mpeg_compression *params = arg;
	553	int err = 0;
	554
4ac97914	555	switch (cmd) {
1da177e4 LT	556	case VIDIOC_S_MPEGCOMP:
	557	if (NULL == params) {
	558	/* apply settings and start encoder */
	559	saa6752hs_init(client);
	560	break;
	561	}
	562	saa6752hs_set_params(client, params);
	563	/* fall through */
	564	case VIDIOC_G_MPEGCOMP:
	565	*params = h->params;
	566	break;
0a4c9c93 FC	567	case VIDIOC_G_FMT:
0a4c9c93 FC	568	{
4ac97914	569	struct v4l2_format *f = arg;
0a4c9c93 FC	570
	571	if (h->video_format == SAA6752HS_VF_UNKNOWN)
	572	h->video_format = SAA6752HS_VF_D1;
	573	f->fmt.pix.width =
	574	v4l2_format_table[h->video_format].fmt.pix.width;
	575	f->fmt.pix.height =
	576	v4l2_format_table[h->video_format].fmt.pix.height;
	577	break ;
	578	}
	579	case VIDIOC_S_FMT:
	580	{
	581	struct v4l2_format *f = arg;
	582
	583	saa6752hs_set_subsampling(client, f);
	584	break;
	585	}
9b71521b RB	586	case VIDIOC_S_STD:
	587	h->standard = ((v4l2_std_id ) arg);
	588	break;
1da177e4 LT	589	default:
	590	/* nothing */
	591	break;
	592	}
	593
	594	return err;
	595	}
	596
	597	/* ----------------------------------------------------------------------- */
	598
	599	static struct i2c_driver driver = {
604f28e2 LR	600	.driver = {
	601	.owner = THIS_MODULE,
	602	.name = "i2c saa6752hs MPEG encoder",
	603	},
afd1a0c9	604	.id = I2C_DRIVERID_SAA6752HS,
afd1a0c9 MCC	605	.attach_adapter = saa6752hs_probe,
	606	.detach_client = saa6752hs_detach,
	607	.command = saa6752hs_command,
1da177e4 LT	608	};
	609
	610	static struct i2c_client client_template =
	611	{
fae91e72	612	.name = "saa6752hs",
afd1a0c9	613	.driver = &driver,
1da177e4 LT	614	};
	615
	616	static int __init saa6752hs_init_module(void)
	617	{
	618	return i2c_add_driver(&driver);
	619	}
	620
	621	static void __exit saa6752hs_cleanup_module(void)
	622	{
	623	i2c_del_driver(&driver);
	624	}
	625
	626	module_init(saa6752hs_init_module);
	627	module_exit(saa6752hs_cleanup_module);
	628
	629	/*
	630	* Overrides for Emacs so that we follow Linus's tabbing style.
	631	* ---------------------------------------------------------------------------
	632	* Local variables:
	633	* c-basic-offset: 8
	634	* End:
	635	*/