/* * saa711x - Philips SAA711x video decoder driver version 0.0.1 * * To do: Now, it handles only saa7113/7114. Should be improved to * handle all Philips saa711x devices. * * Based on saa7113 driver from Dave Perks <dperks@ibm.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as 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 Mass Ave, Cambridge, MA 02139, USA. */#include <linux/module.h>#include <linux/init.h>#include <linux/delay.h>#include <linux/errno.h>#include <linux/fs.h>#include <linux/kernel.h>#include <linux/major.h>#include <linux/slab.h>#include <linux/mm.h>#include <linux/pci.h>#include <linux/signal.h>#include <asm/io.h>#include <asm/pgtable.h>#include <asm/page.h>#include <linux/sched.h>#include <linux/types.h>#include <asm/uaccess.h>#include <linux/videodev.h>MODULE_DESCRIPTION("Philips SAA711x video decoder driver");MODULE_AUTHOR("Dave Perks, Jose Ignacio Gijon, Joerg Heckenbach, Mark McClelland, Dwaine Garden");MODULE_LICENSE("GPL");#include <linux/i2c.h>#include <linux/i2c-dev.h>#define I2C_NAME(s) (s)->name#include <linux/video_decoder.h>static int debug = 0;module_param(debug, int, 0644);MODULE_PARM_DESC(debug, " Set the default Debug level.  Default: 0 (Off) - (0-1)");#define dprintk(num, format, args...) \	do { \		if (debug >= num) \			printk(format, ##args); \	} while (0)/* ----------------------------------------------------------------------- */struct saa711x {	unsigned char reg[32];	int norm;	int input;	int enable;	int bright;	int contrast;	int hue;	int sat;};#define   I2C_SAA7113        0x4A#define   I2C_SAA7114        0x42/* ----------------------------------------------------------------------- */static inline intsaa711x_write (struct i2c_client *client,	       u8                 reg,	       u8                 value){	struct saa711x *decoder = i2c_get_clientdata(client);	decoder->reg[reg] = value;	return i2c_smbus_write_byte_data(client, reg, value);}static intsaa711x_write_block (struct i2c_client *client,		     const u8          *data,		     unsigned int       len){	int ret = -1;	u8 reg;	/* the saa711x has an autoincrement function, use it if	 * the adapter understands raw I2C */	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {		/* do raw I2C, not smbus compatible */		struct saa711x *decoder = i2c_get_clientdata(client);		struct i2c_msg msg;		u8 block_data[32];		msg.addr = client->addr;		msg.flags = 0;		while (len >= 2) {			msg.buf = (char *) block_data;			msg.len = 0;			block_data[msg.len++] = reg = data[0];			do {				block_data[msg.len++] =				    decoder->reg[reg++] = data[1];				len -= 2;				data += 2;			} while (len >= 2 && data[0] == reg &&				 msg.len < 32);			if ((ret = i2c_transfer(client->adapter,						&msg, 1)) < 0)				break;		}	} else {		/* do some slow I2C emulation kind of thing */		while (len >= 2) {			reg = *data++;			if ((ret = saa711x_write(client, reg,						 *data++)) < 0)				break;			len -= 2;		}	}	return ret;}static intsaa711x_init_decoder (struct i2c_client *client,	      struct video_decoder_init *init){	return saa711x_write_block(client, init->data, init->len);}static inline intsaa711x_read (struct i2c_client *client,	      u8                 reg){	return i2c_smbus_read_byte_data(client, reg);}/* ----------------------------------------------------------------------- */static const unsigned char saa711x_i2c_init[] = {	0x00, 0x00,	/* PH711x_CHIP_VERSION 00 - ID byte */	0x01, 0x08,	/* PH711x_INCREMENT_DELAY - (1) (1) (1) (1) IDEL3 IDEL2 IDELL1 IDEL0 */	0x02, 0xc0,	/* PH711x_ANALOG_INPUT_CONTR_1 - FUSE1 FUSE0 GUDL1 GUDL0 MODE3 MODE2 MODE1 MODE0 */	0x03, 0x23,	/* PH711x_ANALOG_INPUT_CONTR_2 - (1) HLNRS VBSL WPOFF HOLDG GAFIX GAI28 GAI18 */	0x04, 0x00,	/* PH711x_ANALOG_INPUT_CONTR_3 - GAI17 GAI16 GAI15 GAI14 GAI13 GAI12 GAI11 GAI10 */	0x05, 0x00,	/* PH711x_ANALOG_INPUT_CONTR_4 - GAI27 GAI26 GAI25 GAI24 GAI23 GAI22 GAI21 GAI20 */	0x06, 0xeb,	/* PH711x_HORIZONTAL_SYNC_START - HSB7 HSB6 HSB5 HSB4 HSB3 HSB2 HSB1 HSB0 */	0x07, 0xe0,	/* PH711x_HORIZONTAL_SYNC_STOP - HSS7 HSS6 HSS5 HSS4 HSS3 HSS2 HSS1 HSS0 */	0x08, 0x88,	/* PH711x_SYNC_CONTROL - AUFD FSEL FOET HTC1 HTC0 HPLL VNOI1 VNOI0 */	0x09, 0x00,	/* PH711x_LUMINANCE_CONTROL - BYPS PREF BPSS1 BPSS0 VBLB UPTCV APER1 APER0 */	0x0a, 0x80,	/* PH711x_LUMINANCE_BRIGHTNESS - BRIG7 BRIG6 BRIG5 BRIG4 BRIG3 BRIG2 BRIG1 BRIG0 */	0x0b, 0x47,	/* PH711x_LUMINANCE_CONTRAST - CONT7 CONT6 CONT5 CONT4 CONT3 CONT2 CONT1 CONT0 */	0x0c, 0x40,	/* PH711x_CHROMA_SATURATION - SATN7 SATN6 SATN5 SATN4 SATN3 SATN2 SATN1 SATN0 */	0x0d, 0x00,	/* PH711x_CHROMA_HUE_CONTROL - HUEC7 HUEC6 HUEC5 HUEC4 HUEC3 HUEC2 HUEC1 HUEC0 */	0x0e, 0x01,	/* PH711x_CHROMA_CONTROL - CDTO CSTD2 CSTD1 CSTD0 DCCF FCTC CHBW1 CHBW0 */	0x0f, 0xaa,	/* PH711x_CHROMA_GAIN_CONTROL - ACGC CGAIN6 CGAIN5 CGAIN4 CGAIN3 CGAIN2 CGAIN1 CGAIN0 */	0x10, 0x00,	/* PH711x_FORMAT_DELAY_CONTROL - OFTS1 OFTS0 HDEL1 HDEL0 VRLN YDEL2 YDEL1 YDEL0 */	0x11, 0x1C,	/* PH711x_OUTPUT_CONTROL_1 - GPSW1 CM99 GPSW0 HLSEL OEYC OERT VIPB COLO */	0x12, 0x01,	/* PH711x_OUTPUT_CONTROL_2 - RTSE13 RTSE12 RTSE11 RTSE10 RTSE03 RTSE02 RTSE01 RTSE00 */	0x13, 0x00,	/* PH711x_OUTPUT_CONTROL_3 - ADLSB (1) (1) OLDSB FIDP (1) AOSL1 AOSL0 */	0x14, 0x00,	/* RESERVED 14 - (1) (1) (1) (1) (1) (1) (1) (1) */	0x15, 0x00,	/* PH711x_V_GATE1_START - VSTA7 VSTA6 VSTA5 VSTA4 VSTA3 VSTA2 VSTA1 VSTA0 */	0x16, 0x00,	/* PH711x_V_GATE1_STOP - VSTO7 VSTO6 VSTO5 VSTO4 VSTO3 VSTO2 VSTO1 VSTO0 */	0x17, 0x00,	/* PH711x_V_GATE1_MSB - (1) (1) (1) (1) (1) (1) VSTO8 VSTA8 */};static intsaa711x_command (struct i2c_client *client,		 unsigned int       cmd,		 void              *arg){	struct saa711x *decoder = i2c_get_clientdata(client);	switch (cmd) {	case 0:	case DECODER_INIT:	{		struct video_decoder_init *init = arg;		if (NULL != init)			return saa711x_init_decoder(client, init);		else {			struct video_decoder_init vdi;			vdi.data = saa711x_i2c_init;			vdi.len = sizeof(saa711x_i2c_init);			return saa711x_init_decoder(client, &vdi);		}	}	case DECODER_DUMP:	{		int i;		for (i = 0; i < 32; i += 16) {			int j;			printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);			for (j = 0; j < 16; ++j) {				printk(" %02x",				       saa711x_read(client, i + j));			}			printk("\n");		}	}		break;	case DECODER_GET_CAPABILITIES:	{		struct video_decoder_capability *cap = arg;		cap->flags = VIDEO_DECODER_PAL |			     VIDEO_DECODER_NTSC |			     VIDEO_DECODER_SECAM |			     VIDEO_DECODER_AUTO |			     VIDEO_DECODER_CCIR;		cap->inputs = 8;		cap->outputs = 1;	}		break;	case DECODER_GET_STATUS:	{		int *iarg = arg;		int status;		int res;		status = saa711x_read(client, 0x1f);		dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),			status);		res = 0;		if ((status & (1 << 6)) == 0) {			res |= DECODER_STATUS_GOOD;		}		switch (decoder->norm) {		case VIDEO_MODE_NTSC:			res |= DECODER_STATUS_NTSC;			break;		case VIDEO_MODE_PAL:			res |= DECODER_STATUS_PAL;			break;		case VIDEO_MODE_SECAM:			res |= DECODER_STATUS_SECAM;			break;		default:		case VIDEO_MODE_AUTO:			if ((status & (1 << 5)) != 0) {				res |= DECODER_STATUS_NTSC;			} else {				res |= DECODER_STATUS_PAL;			}			break;		}		if ((status & (1 << 0)) != 0) {			res |= DECODER_STATUS_COLOR;		}		*iarg = res;	}		break;	case DECODER_SET_GPIO:	{		int *iarg = arg;		if (0 != *iarg) {			saa711x_write(client, 0x11,				(decoder->reg[0x11] | 0x80));		} else {			saa711x_write(client, 0x11,				(decoder->reg[0x11] & 0x7f));		}		break;	}	case DECODER_SET_VBI_BYPASS:	{		int *iarg = arg;		if (0 != *iarg) {			saa711x_write(client, 0x13,				(decoder->reg[0x13] & 0xf0) | 0x0a);		} else {			saa711x_write(client, 0x13,				(decoder->reg[0x13] & 0xf0));		}		break;	}	case DECODER_SET_NORM:	{		int *iarg = arg;		switch (*iarg) {		case VIDEO_MODE_NTSC:			saa711x_write(client, 0x08,				      (decoder->reg[0x08] & 0x3f) | 0x40);			saa711x_write(client, 0x0e,				      (decoder->reg[0x0e] & 0x8f));			break;		case VIDEO_MODE_PAL:			saa711x_write(client, 0x08,				      (decoder->reg[0x08] & 0x3f) | 0x00);			saa711x_write(client, 0x0e,				      (decoder->reg[0x0e] & 0x8f));			break;		case VIDEO_MODE_SECAM:			saa711x_write(client, 0x08,				      (decoder->reg[0x08] & 0x3f) | 0x00);			saa711x_write(client, 0x0e,				      (decoder->reg[0x0e] & 0x8f) | 0x50);			break;		case VIDEO_MODE_AUTO:			saa711x_write(client, 0x08,				      (decoder->reg[0x08] & 0x3f) | 0x80);			saa711x_write(client, 0x0e,				      (decoder->reg[0x0e] & 0x8f));			break;		default:			return -EINVAL;		}		decoder->norm = *iarg;	}		break;	case DECODER_SET_INPUT:	{		int *iarg = arg;		if (*iarg < 0 || *iarg > 9) {			return -EINVAL;		}		if (decoder->input != *iarg) {			decoder->input = *iarg;			/* select mode */			saa711x_write(client, 0x02,				      (decoder->reg[0x02] & 0xf0) | decoder->input);			/* bypass chrominance trap for modes 4..7 */			saa711x_write(client, 0x09,				      (decoder->reg[0x09] & 0x7f) | ((decoder->input > 3) ? 0x80 : 0));		}	}		break;	case DECODER_SET_OUTPUT:	{		int *iarg = arg;		/* not much choice of outputs */		if (*iarg != 0) {			return -EINVAL;		}	}		break;	case DECODER_ENABLE_OUTPUT:	{		int *iarg = arg;		int enable = (*iarg != 0);		if (decoder->enable != enable) {			decoder->enable = enable;			/* RJ: If output should be disabled (for			 * playing videos), we also need a open PLL.			 * The input is set to 0 (where no input			 * source is connected), although this			 * is not necessary.			 *			 * If output should be enabled, we have to			 * reverse the above.			 */			if (decoder->enable) {				saa711x_write(client, 0x02,					      (decoder->					       reg[0x02] & 0xf8) |					      decoder->input);				saa711x_write(client, 0x08,					      (decoder->reg[0x08] & 0xfb));				saa711x_write(client, 0x11,					      (decoder->					       reg[0x11] & 0xf3) | 0x0c);			} else {				saa711x_write(client, 0x02,					      (decoder->reg[0x02] & 0xf8));				saa711x_write(client, 0x08,					      (decoder->					       reg[0x08] & 0xfb) | 0x04);				saa711x_write(client, 0x11,					      (decoder->reg[0x11] & 0xf3));			}		}	}		break;	case DECODER_SET_PICTURE:	{		struct video_picture *pic = arg;		if (decoder->bright != pic->brightness) {			/* We want 0 to 255 we get 0-65535 */			decoder->bright = pic->brightness;			saa711x_write(client, 0x0a, decoder->bright >> 8);		}		if (decoder->contrast != pic->contrast) {			/* We want 0 to 127 we get 0-65535 */			decoder->contrast = pic->contrast;			saa711x_write(client, 0x0b,				      decoder->contrast >> 9);		}		if (decoder->sat != pic->colour) {			/* We want 0 to 127 we get 0-65535 */			decoder->sat = pic->colour;			saa711x_write(client, 0x0c, decoder->sat >> 9);		}		if (decoder->hue != pic->hue) {			/* We want -128 to 127 we get 0-65535 */			decoder->hue = pic->hue;			saa711x_write(client, 0x0d,				      (decoder->hue - 32768) >> 8);		}	}		break;	default:		return -EINVAL;	}	return 0;}/* ----------------------------------------------------------------------- *//* * Generic i2c probe * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' *//* standard i2c insmod options */static unsigned short normal_i2c[] = {	I2C_SAA7113>>1,         /* saa7113 */	I2C_SAA7114>>1,         /* saa7114 */	I2C_CLIENT_END};I2C_CLIENT_INSMOD;static struct i2c_driver i2c_driver_saa711x;static intsaa711x_detect_client (struct i2c_adapter *adapter,		       int                 address,		       int                 kind){	int i;	struct i2c_client *client;	struct saa711x *decoder;	struct video_decoder_init vdi;	dprintk(1,		KERN_INFO		"saa711x.c: detecting saa711x client on address 0x%x\n",		address << 1);	/* Check if the adapter supports the needed features */	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))		return 0;	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);	if (client == 0)		return -ENOMEM;	client->addr = address;	client->adapter = adapter;	client->driver = &i2c_driver_saa711x;	strlcpy(I2C_NAME(client), "saa711x", sizeof(I2C_NAME(client)));	decoder = kzalloc(sizeof(struct saa711x), GFP_KERNEL);	if (decoder == NULL) {		kfree(client);		return -ENOMEM;	}	decoder->norm = VIDEO_MODE_NTSC;	decoder->input = 0;	decoder->enable = 1;	decoder->bright = 32768;	decoder->contrast = 32768;	decoder->hue = 32768;	decoder->sat = 32768;	i2c_set_clientdata(client, decoder);	i = i2c_attach_client(client);	if (i) {		kfree(client);		kfree(decoder);		return i;	}	vdi.data = saa711x_i2c_init;	vdi.len = sizeof(saa711x_i2c_init);	i = saa711x_init_decoder(client, &vdi);	if (i < 0) {		dprintk(1, KERN_ERR "%s_attach error: init status %d\n",			I2C_NAME(client), i);	} else {		dprintk(1,			KERN_INFO			"%s_attach: chip version %x at address 0x%x\n",			I2C_NAME(client), saa711x_read(client, 0x00) >> 4,			client->addr << 1);	}	return 0;}static intsaa711x_attach_adapter (struct i2c_adapter *adapter){	dprintk(1,		KERN_INFO		"saa711x.c: starting probe for adapter %s (0x%x)\n",		I2C_NAME(adapter), adapter->id);	return i2c_probe(adapter, &addr_data, &saa711x_detect_client);}static intsaa711x_detach_client (struct i2c_client *client){	struct saa711x *decoder = i2c_get_clientdata(client);	int err;	err = i2c_detach_client(client);	if (err) {		return err;	}	kfree(decoder);	kfree(client);	return 0;}/* ----------------------------------------------------------------------- */static struct i2c_driver i2c_driver_saa711x = {	.driver = {		.name = "saa711x",	},	.id = I2C_DRIVERID_SAA711X,	.attach_adapter = saa711x_attach_adapter,	.detach_client = saa711x_detach_client,	.command = saa711x_command,};static int __initsaa711x_init (void){	return i2c_add_driver(&i2c_driver_saa711x);}static void __exitsaa711x_exit (void){	i2c_del_driver(&i2c_driver_saa711x);}module_init(saa711x_init);module_exit(saa711x_exit);