drivers/media/video/bt856.c - kernel/msm-4.9 - Gitiles

 /*
  * bt856 - BT856A Digital Video Encoder (Rockwell Part)
  *
  * Copyright (C) 1999 Mike Bernson <mike@mlb.org>
  * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
  *
  * Modifications for LML33/DC10plus unified driver
  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
  *
  * This code was modify/ported from the saa7111 driver written
  * by Dave Perks.
  *
  * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
  *   - moved over to linux>=2.4.x i2c protocol (9/9/2002)
  *
  * 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 <linux/videodev.h>
 #include <asm/uaccess.h>

 MODULE_DESCRIPTION("Brooktree-856A video encoder driver");
 MODULE_AUTHOR("Mike Bernson & Dave Perks");
 MODULE_LICENSE("GPL");

 #include <linux/i2c.h>

 #define I2C_NAME(s) (s)->name

 #include <linux/video_encoder.h>

 static int debug = 0;
 module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "Debug level (0-1)");

 #define dprintk(num, format, args...) \
 	do { \
 		if (debug >= num) \
 			printk(format, ##args); \
 	} while (0)

 /* ----------------------------------------------------------------------- */

 #define REG_OFFSET	0xDA
 #define BT856_NR_REG	6

 struct bt856 {
 	unsigned char reg[BT856_NR_REG];

 	int norm;
 	int enable;
 };

 #define   I2C_BT856        0x88

 /* ----------------------------------------------------------------------- */

 static inline int
 bt856_write (struct i2c_client *client,
 	     u8                 reg,
 	     u8                 value)
 {
 	struct bt856 *encoder = i2c_get_clientdata(client);

 	encoder->reg[reg - REG_OFFSET] = value;
 	return i2c_smbus_write_byte_data(client, reg, value);
 }

 static inline int
 bt856_setbit (struct i2c_client *client,
 	      u8                 reg,
 	      u8                 bit,
 	      u8                 value)
 {
 	struct bt856 *encoder = i2c_get_clientdata(client);

 	return bt856_write(client, reg,
 			   (encoder->
 			    reg[reg - REG_OFFSET] & ~(1 << bit)) |
 			    (value ? (1 << bit) : 0));
 }

 static void
 bt856_dump (struct i2c_client *client)
 {
 	int i;
 	struct bt856 *encoder = i2c_get_clientdata(client);

 	printk(KERN_INFO "%s: register dump:", I2C_NAME(client));
 	for (i = 0; i < BT856_NR_REG; i += 2)
 		printk(" %02x", encoder->reg[i]);
 	printk("\n");
 }

 /* ----------------------------------------------------------------------- */

 static int
 bt856_command (struct i2c_client *client,
 	       unsigned int       cmd,
 	       void              *arg)
 {
 	struct bt856 *encoder = i2c_get_clientdata(client);

 	switch (cmd) {

 	case 0:
 		/* This is just for testing!!! */
 		dprintk(1, KERN_INFO "bt856: init\n");
 		bt856_write(client, 0xdc, 0x18);
 		bt856_write(client, 0xda, 0);
 		bt856_write(client, 0xde, 0);

 		bt856_setbit(client, 0xdc, 3, 1);
 		//bt856_setbit(client, 0xdc, 6, 0);
 		bt856_setbit(client, 0xdc, 4, 1);

 		switch (encoder->norm) {

 		case VIDEO_MODE_NTSC:
 			bt856_setbit(client, 0xdc, 2, 0);
 			break;

 		case VIDEO_MODE_PAL:
 			bt856_setbit(client, 0xdc, 2, 1);
 			break;
 		}

 		bt856_setbit(client, 0xdc, 1, 1);
 		bt856_setbit(client, 0xde, 4, 0);
 		bt856_setbit(client, 0xde, 3, 1);
 		if (debug != 0)
 			bt856_dump(client);
 		break;

 	case ENCODER_GET_CAPABILITIES:
 	{
 		struct video_encoder_capability *cap = arg;

 		dprintk(1, KERN_INFO "%s: get capabilities\n",
 			I2C_NAME(client));

 		cap->flags = VIDEO_ENCODER_PAL |
 			     VIDEO_ENCODER_NTSC |
 			     VIDEO_ENCODER_CCIR;
 		cap->inputs = 2;
 		cap->outputs = 1;
 	}
 		break;

 	case ENCODER_SET_NORM:
 	{
 		int *iarg = arg;

 		dprintk(1, KERN_INFO "%s: set norm %d\n", I2C_NAME(client),
 			*iarg);

 		switch (*iarg) {

 		case VIDEO_MODE_NTSC:
 			bt856_setbit(client, 0xdc, 2, 0);
 			break;

 		case VIDEO_MODE_PAL:
 			bt856_setbit(client, 0xdc, 2, 1);
 			bt856_setbit(client, 0xda, 0, 0);
 			//bt856_setbit(client, 0xda, 0, 1);
 			break;

 		default:
 			return -EINVAL;

 		}
 		encoder->norm = *iarg;
 		if (debug != 0)
 			bt856_dump(client);
 	}
 		break;

 	case ENCODER_SET_INPUT:
 	{
 		int *iarg = arg;

 		dprintk(1, KERN_INFO "%s: set input %d\n", I2C_NAME(client),
 			*iarg);

 		/* We only have video bus.
 		 * iarg = 0: input is from bt819
 		 * iarg = 1: input is from ZR36060 */

 		switch (*iarg) {

 		case 0:
 			bt856_setbit(client, 0xde, 4, 0);
 			bt856_setbit(client, 0xde, 3, 1);
 			bt856_setbit(client, 0xdc, 3, 1);
 			bt856_setbit(client, 0xdc, 6, 0);
 			break;
 		case 1:
 			bt856_setbit(client, 0xde, 4, 0);
 			bt856_setbit(client, 0xde, 3, 1);
 			bt856_setbit(client, 0xdc, 3, 1);
 			bt856_setbit(client, 0xdc, 6, 1);
 			break;
 		case 2:	// Color bar
 			bt856_setbit(client, 0xdc, 3, 0);
 			bt856_setbit(client, 0xde, 4, 1);
 			break;
 		default:
 			return -EINVAL;

 		}

 		if (debug != 0)
 			bt856_dump(client);
 	}
 		break;

 	case ENCODER_SET_OUTPUT:
 	{
 		int *iarg = arg;

 		dprintk(1, KERN_INFO "%s: set output %d\n", I2C_NAME(client),
 			*iarg);

 		/* not much choice of outputs */
 		if (*iarg != 0) {
 			return -EINVAL;
 		}
 	}
 		break;

 	case ENCODER_ENABLE_OUTPUT:
 	{
 		int *iarg = arg;

 		encoder->enable = !!*iarg;

 		dprintk(1, KERN_INFO "%s: enable output %d\n",
 			I2C_NAME(client), encoder->enable);
 	}
 		break;

 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 /* ----------------------------------------------------------------------- */

 /*
  * Generic i2c probe
  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
  */
 static unsigned short normal_i2c[] = { I2C_BT856 >> 1, I2C_CLIENT_END };

 static unsigned short ignore = I2C_CLIENT_END;

 static struct i2c_client_address_data addr_data = {
 	.normal_i2c		= normal_i2c,
 	.probe			= &ignore,
 	.ignore			= &ignore,
 };

 static struct i2c_driver i2c_driver_bt856;

 static int
 bt856_detect_client (struct i2c_adapter *adapter,
 		     int                 address,
 		     int                 kind)
 {
 	int i;
 	struct i2c_client *client;
 	struct bt856 *encoder;

 	dprintk(1,
 		KERN_INFO
 		"bt856.c: detecting bt856 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_bt856;
 	strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client)));

 	encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL);
 	if (encoder == NULL) {
 		kfree(client);
 		return -ENOMEM;
 	}
 	encoder->norm = VIDEO_MODE_NTSC;
 	encoder->enable = 1;
 	i2c_set_clientdata(client, encoder);

 	i = i2c_attach_client(client);
 	if (i) {
 		kfree(client);
 		kfree(encoder);
 		return i;
 	}

 	bt856_write(client, 0xdc, 0x18);
 	bt856_write(client, 0xda, 0);
 	bt856_write(client, 0xde, 0);

 	bt856_setbit(client, 0xdc, 3, 1);
 	//bt856_setbit(client, 0xdc, 6, 0);
 	bt856_setbit(client, 0xdc, 4, 1);

 	switch (encoder->norm) {

 	case VIDEO_MODE_NTSC:
 		bt856_setbit(client, 0xdc, 2, 0);
 		break;

 	case VIDEO_MODE_PAL:
 		bt856_setbit(client, 0xdc, 2, 1);
 		break;
 	}

 	bt856_setbit(client, 0xdc, 1, 1);
 	bt856_setbit(client, 0xde, 4, 0);
 	bt856_setbit(client, 0xde, 3, 1);

 	if (debug != 0)
 		bt856_dump(client);

 	dprintk(1, KERN_INFO "%s_attach: at address 0x%x\n", I2C_NAME(client),
 		client->addr << 1);

 	return 0;
 }

 static int
 bt856_attach_adapter (struct i2c_adapter *adapter)
 {
 	dprintk(1,
 		KERN_INFO
 		"bt856.c: starting probe for adapter %s (0x%x)\n",
 		I2C_NAME(adapter), adapter->id);
 	return i2c_probe(adapter, &addr_data, &bt856_detect_client);
 }

 static int
 bt856_detach_client (struct i2c_client *client)
 {
 	struct bt856 *encoder = i2c_get_clientdata(client);
 	int err;

 	err = i2c_detach_client(client);
 	if (err) {
 		return err;
 	}

 	kfree(encoder);
 	kfree(client);

 	return 0;
 }

 /* ----------------------------------------------------------------------- */

 static struct i2c_driver i2c_driver_bt856 = {
 	.driver = {
 		.name = "bt856",
 	},

 	.id = I2C_DRIVERID_BT856,

 	.attach_adapter = bt856_attach_adapter,
 	.detach_client = bt856_detach_client,
 	.command = bt856_command,
 };

 static int __init
 bt856_init (void)
 {
 	return i2c_add_driver(&i2c_driver_bt856);
 }

 static void __exit
 bt856_exit (void)
 {
 	i2c_del_driver(&i2c_driver_bt856);
 }

 module_init(bt856_init);
 module_exit(bt856_exit);
	/*
	* bt856 - BT856A Digital Video Encoder (Rockwell Part)
	*
	* Copyright (C) 1999 Mike Bernson <mike@mlb.org>
	* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
	*
	* Modifications for LML33/DC10plus unified driver
	* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
	*
	* This code was modify/ported from the saa7111 driver written
	* by Dave Perks.
	*
	* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
	* - moved over to linux>=2.4.x i2c protocol (9/9/2002)
	*
	* 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 <linux/videodev.h>
	#include <asm/uaccess.h>

	MODULE_DESCRIPTION("Brooktree-856A video encoder driver");
	MODULE_AUTHOR("Mike Bernson & Dave Perks");
	MODULE_LICENSE("GPL");

	#include <linux/i2c.h>

	#define I2C_NAME(s) (s)->name

	#include <linux/video_encoder.h>

	static int debug = 0;
	module_param(debug, int, 0);
	MODULE_PARM_DESC(debug, "Debug level (0-1)");

	#define dprintk(num, format, args...) \
	do { \
	if (debug >= num) \
	printk(format, ##args); \
	} while (0)

	/* ----------------------------------------------------------------------- */

	#define REG_OFFSET 0xDA
	#define BT856_NR_REG 6

	struct bt856 {
	unsigned char reg[BT856_NR_REG];

	int norm;
	int enable;
	};

	#define I2C_BT856 0x88

	/* ----------------------------------------------------------------------- */

	static inline int
	bt856_write (struct i2c_client *client,
	u8 reg,
	u8 value)
	{
	struct bt856 *encoder = i2c_get_clientdata(client);

	encoder->reg[reg - REG_OFFSET] = value;
	return i2c_smbus_write_byte_data(client, reg, value);
	}

	static inline int
	bt856_setbit (struct i2c_client *client,
	u8 reg,
	u8 bit,
	u8 value)
	{
	struct bt856 *encoder = i2c_get_clientdata(client);

	return bt856_write(client, reg,
	(encoder->
	reg[reg - REG_OFFSET] & ~(1 << bit)) \|
	(value ? (1 << bit) : 0));
	}

	static void
	bt856_dump (struct i2c_client *client)
	{
	int i;
	struct bt856 *encoder = i2c_get_clientdata(client);

	printk(KERN_INFO "%s: register dump:", I2C_NAME(client));
	for (i = 0; i < BT856_NR_REG; i += 2)
	printk(" %02x", encoder->reg[i]);
	printk("\n");
	}

	/* ----------------------------------------------------------------------- */

	static int
	bt856_command (struct i2c_client *client,
	unsigned int cmd,
	void *arg)
	{
	struct bt856 *encoder = i2c_get_clientdata(client);

	switch (cmd) {

	case 0:
	/* This is just for testing!!! */
	dprintk(1, KERN_INFO "bt856: init\n");
	bt856_write(client, 0xdc, 0x18);
	bt856_write(client, 0xda, 0);
	bt856_write(client, 0xde, 0);

	bt856_setbit(client, 0xdc, 3, 1);
	//bt856_setbit(client, 0xdc, 6, 0);
	bt856_setbit(client, 0xdc, 4, 1);

	switch (encoder->norm) {

	case VIDEO_MODE_NTSC:
	bt856_setbit(client, 0xdc, 2, 0);
	break;

	case VIDEO_MODE_PAL:
	bt856_setbit(client, 0xdc, 2, 1);
	break;
	}

	bt856_setbit(client, 0xdc, 1, 1);
	bt856_setbit(client, 0xde, 4, 0);
	bt856_setbit(client, 0xde, 3, 1);
	if (debug != 0)
	bt856_dump(client);
	break;

	case ENCODER_GET_CAPABILITIES:
	{
	struct video_encoder_capability *cap = arg;

	dprintk(1, KERN_INFO "%s: get capabilities\n",
	I2C_NAME(client));

	cap->flags = VIDEO_ENCODER_PAL \|
	VIDEO_ENCODER_NTSC \|
	VIDEO_ENCODER_CCIR;
	cap->inputs = 2;
	cap->outputs = 1;
	}
	break;

	case ENCODER_SET_NORM:
	{
	int *iarg = arg;

	dprintk(1, KERN_INFO "%s: set norm %d\n", I2C_NAME(client),
	*iarg);

	switch (*iarg) {

	case VIDEO_MODE_NTSC:
	bt856_setbit(client, 0xdc, 2, 0);
	break;

	case VIDEO_MODE_PAL:
	bt856_setbit(client, 0xdc, 2, 1);
	bt856_setbit(client, 0xda, 0, 0);
	//bt856_setbit(client, 0xda, 0, 1);
	break;

	default:
	return -EINVAL;

	}
	encoder->norm = *iarg;
	if (debug != 0)
	bt856_dump(client);
	}
	break;

	case ENCODER_SET_INPUT:
	{
	int *iarg = arg;

	dprintk(1, KERN_INFO "%s: set input %d\n", I2C_NAME(client),
	*iarg);

	/* We only have video bus.
	* iarg = 0: input is from bt819
	* iarg = 1: input is from ZR36060 */

	switch (*iarg) {

	case 0:
	bt856_setbit(client, 0xde, 4, 0);
	bt856_setbit(client, 0xde, 3, 1);
	bt856_setbit(client, 0xdc, 3, 1);
	bt856_setbit(client, 0xdc, 6, 0);
	break;
	case 1:
	bt856_setbit(client, 0xde, 4, 0);
	bt856_setbit(client, 0xde, 3, 1);
	bt856_setbit(client, 0xdc, 3, 1);
	bt856_setbit(client, 0xdc, 6, 1);
	break;
	case 2: // Color bar
	bt856_setbit(client, 0xdc, 3, 0);
	bt856_setbit(client, 0xde, 4, 1);
	break;
	default:
	return -EINVAL;

	}

	if (debug != 0)
	bt856_dump(client);
	}
	break;

	case ENCODER_SET_OUTPUT:
	{
	int *iarg = arg;

	dprintk(1, KERN_INFO "%s: set output %d\n", I2C_NAME(client),
	*iarg);

	/* not much choice of outputs */
	if (*iarg != 0) {
	return -EINVAL;
	}
	}
	break;

	case ENCODER_ENABLE_OUTPUT:
	{
	int *iarg = arg;

	encoder->enable = !!*iarg;

	dprintk(1, KERN_INFO "%s: enable output %d\n",
	I2C_NAME(client), encoder->enable);
	}
	break;

	default:
	return -EINVAL;
	}

	return 0;
	}

	/* ----------------------------------------------------------------------- */

	/*
	* Generic i2c probe
	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
	*/
	static unsigned short normal_i2c[] = { I2C_BT856 >> 1, I2C_CLIENT_END };

	static unsigned short ignore = I2C_CLIENT_END;

	static struct i2c_client_address_data addr_data = {
	.normal_i2c = normal_i2c,
	.probe = &ignore,
	.ignore = &ignore,
	};

	static struct i2c_driver i2c_driver_bt856;

	static int
	bt856_detect_client (struct i2c_adapter *adapter,
	int address,
	int kind)
	{
	int i;
	struct i2c_client *client;
	struct bt856 *encoder;

	dprintk(1,
	KERN_INFO
	"bt856.c: detecting bt856 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_bt856;
	strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client)));

	encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL);
	if (encoder == NULL) {
	kfree(client);
	return -ENOMEM;
	}
	encoder->norm = VIDEO_MODE_NTSC;
	encoder->enable = 1;
	i2c_set_clientdata(client, encoder);

	i = i2c_attach_client(client);
	if (i) {
	kfree(client);
	kfree(encoder);
	return i;
	}

	bt856_write(client, 0xdc, 0x18);
	bt856_write(client, 0xda, 0);
	bt856_write(client, 0xde, 0);

	bt856_setbit(client, 0xdc, 3, 1);
	//bt856_setbit(client, 0xdc, 6, 0);
	bt856_setbit(client, 0xdc, 4, 1);

	switch (encoder->norm) {

	case VIDEO_MODE_NTSC:
	bt856_setbit(client, 0xdc, 2, 0);
	break;

	case VIDEO_MODE_PAL:
	bt856_setbit(client, 0xdc, 2, 1);
	break;
	}

	bt856_setbit(client, 0xdc, 1, 1);
	bt856_setbit(client, 0xde, 4, 0);
	bt856_setbit(client, 0xde, 3, 1);

	if (debug != 0)
	bt856_dump(client);

	dprintk(1, KERN_INFO "%s_attach: at address 0x%x\n", I2C_NAME(client),
	client->addr << 1);

	return 0;
	}

	static int
	bt856_attach_adapter (struct i2c_adapter *adapter)
	{
	dprintk(1,
	KERN_INFO
	"bt856.c: starting probe for adapter %s (0x%x)\n",
	I2C_NAME(adapter), adapter->id);
	return i2c_probe(adapter, &addr_data, &bt856_detect_client);
	}

	static int
	bt856_detach_client (struct i2c_client *client)
	{
	struct bt856 *encoder = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(client);
	if (err) {
	return err;
	}

	kfree(encoder);
	kfree(client);

	return 0;
	}

	/* ----------------------------------------------------------------------- */

	static struct i2c_driver i2c_driver_bt856 = {
	.driver = {
	.name = "bt856",
	},

	.id = I2C_DRIVERID_BT856,

	.attach_adapter = bt856_attach_adapter,
	.detach_client = bt856_detach_client,
	.command = bt856_command,
	};

	static int __init
	bt856_init (void)
	{
	return i2c_add_driver(&i2c_driver_bt856);
	}

	static void __exit
	bt856_exit (void)
	{
	i2c_del_driver(&i2c_driver_bt856);
	}

	module_init(bt856_init);
	module_exit(bt856_exit);