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Commit bba0d982 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (9199): adv7175: convert i2c driver for new i2c API 



- Convert to use v4l2-i2c-drv-legacy.h to be able to handle the new i2c API
- Cleanups
- Use v4l_dbg/v4l_info to have uniform kernel messages

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent b9a21f84

drivers/media/video/adv7175.c

+60 −183
Original line number Diff line number Diff line
@@ -25,43 +25,24 @@ 
 */



#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/signal.h>

#include <linux/types.h>

#include <linux/i2c.h>

#include <asm/io.h>

#include <asm/pgtable.h>

#include <asm/page.h>

#include <linux/ioctl.h>

#include <asm/uaccess.h>



#include <linux/i2c.h>

#include <linux/i2c-id.h>

#include <linux/videodev.h>

#include <linux/video_encoder.h>

#include <media/v4l2-common.h>

#include <media/v4l2-i2c-drv-legacy.h>



MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");

MODULE_AUTHOR("Dave Perks");

MODULE_LICENSE("GPL");





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





static int debug;

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)



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



struct adv7175 {
@@ -77,33 +58,23 @@ struct adv7175 { 
#define   I2C_ADV7175        0xd4

#define   I2C_ADV7176        0x54



static char adv7175_name[] = "adv7175";

static char adv7176_name[] = "adv7176";



static char *inputs[] = { "pass_through", "play_back", "color_bar" };

static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };



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



static inline int

adv7175_write (struct i2c_client *client,

	       u8                 reg,

	       u8                 value)

static inline int adv7175_write(struct i2c_client *client, u8 reg, u8 value)

{

	return i2c_smbus_write_byte_data(client, reg, value);

}



static inline int

adv7175_read (struct i2c_client *client,

	      u8                 reg)

static inline int adv7175_read(struct i2c_client *client, u8 reg)

{

	return i2c_smbus_read_byte_data(client, reg);

}



static int

adv7175_write_block (struct i2c_client *client,

		     const u8          *data,

		     unsigned int       len)

static int adv7175_write_block(struct i2c_client *client,

		     const u8 *data, unsigned int len)

{

	int ret = -1;

	u8 reg;
@@ -123,18 +94,17 @@ adv7175_write_block (struct i2c_client *client, 
				reg++;

				len -= 2;

				data += 2;

			} while (len >= 2 && data[0] == reg &&

				 block_len < 32);

			if ((ret = i2c_master_send(client, block_data,

						   block_len)) < 0)

			} while (len >= 2 && data[0] == reg && block_len < 32);

			ret = i2c_master_send(client, block_data, block_len);

			if (ret < 0)

				break;

		}

	} else {

		/* do some slow I2C emulation kind of thing */

		while (len >= 2) {

			reg = *data++;

			if ((ret = adv7175_write(client, reg,

						 *data++)) < 0)

			ret = adv7175_write(client, reg, *data++);

			if (ret < 0)

				break;

			len -= 2;

		}
@@ -143,9 +113,7 @@ adv7175_write_block (struct i2c_client *client, 
	return ret;

}



static void

set_subcarrier_freq (struct i2c_client *client,

		     int                pass_through)

static void set_subcarrier_freq(struct i2c_client *client, int pass_through)

{

	/* for some reason pass_through NTSC needs

	 * a different sub-carrier freq to remain stable. */
@@ -160,12 +128,12 @@ set_subcarrier_freq (struct i2c_client *client, 
}



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

// Output filter:  S-Video  Composite

/* Output filter:  S-Video  Composite */



#define MR050       0x11	//0x09

#define MR060       0x14	//0x0c

#define MR050       0x11	/* 0x09 */

#define MR060       0x14	/* 0x0c */



//---------------------------------------------------------------------------

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



#define TR0MODE     0x46

#define TR0RST	    0x80
@@ -216,15 +184,11 @@ static const unsigned char init_ntsc[] = { 
	0x06, 0x1a,		/* subc. phase */

};



static int

adv7175_command (struct i2c_client *client,

		 unsigned int       cmd,

		 void              *arg)

static int adv7175_command(struct i2c_client *client, unsigned cmd, void *arg)

{

	struct adv7175 *encoder = i2c_get_clientdata(client);



	switch (cmd) {



	case 0:

		/* This is just for testing!!! */

		adv7175_write_block(client, init_common,
@@ -242,15 +206,14 @@ adv7175_command (struct i2c_client *client, 
			     VIDEO_ENCODER_SECAM; /* well, hacky */

		cap->inputs = 2;

		cap->outputs = 1;

	}

		break;

	}



	case ENCODER_SET_NORM:

	{

		int iarg = *(int *) arg;



		switch (iarg) {



		case VIDEO_MODE_NTSC:

			adv7175_write_block(client, init_ntsc,

					    sizeof(init_ntsc));
@@ -284,16 +247,13 @@ adv7175_command (struct i2c_client *client, 
			adv7175_write(client, 0x07, TR0MODE);

			break;

		default:

			dprintk(1, KERN_ERR "%s: illegal norm: %d\n",

				I2C_NAME(client), iarg);

			v4l_dbg(1, debug, client, "illegal norm: %d\n", iarg);

			return -EINVAL;



		}

		dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),

			norms[iarg]);

		v4l_dbg(1, debug, client, "switched to %s\n", norms[iarg]);

		encoder->norm = iarg;

	}

		break;

	}



	case ENCODER_SET_INPUT:

	{
@@ -304,7 +264,6 @@ adv7175_command (struct i2c_client *client, 
		 *iarg = 2: color bar */



		switch (iarg) {



		case 0:

			adv7175_write(client, 0x01, 0x00);
@@ -331,7 +290,7 @@ adv7175_command (struct i2c_client *client, 
			adv7175_write(client, 0x0d, 0x49);

			adv7175_write(client, 0x07, TR0MODE | TR0RST);

			adv7175_write(client, 0x07, TR0MODE);

			//udelay(10);

			/* udelay(10); */

			break;



		case 2:
@@ -343,39 +302,35 @@ adv7175_command (struct i2c_client *client, 
			adv7175_write(client, 0x0d, 0x49);

			adv7175_write(client, 0x07, TR0MODE | TR0RST);

			adv7175_write(client, 0x07, TR0MODE);

			//udelay(10);

			/* udelay(10); */

			break;



		default:

			dprintk(1, KERN_ERR "%s: illegal input: %d\n",

				I2C_NAME(client), iarg);

			v4l_dbg(1, debug, client, "illegal input: %d\n", iarg);

			return -EINVAL;



		}

		dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),

			inputs[iarg]);

		v4l_dbg(1, debug, client, "switched to %s\n", inputs[iarg]);

		encoder->input = iarg;

	}

		break;

	}



	case ENCODER_SET_OUTPUT:

	{

		int *iarg = arg;



		/* not much choice of outputs */

		if (*iarg != 0) {

		if (*iarg != 0)

			return -EINVAL;

		}

	}

		break;

	}



	case ENCODER_ENABLE_OUTPUT:

	{

		int *iarg = arg;



		encoder->enable = !!*iarg;

	}

		break;

	}



	default:

		return -EINVAL;
@@ -390,145 +345,67 @@ adv7175_command (struct i2c_client *client, 
 * Generic i2c probe

 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'

 */

static unsigned short normal_i2c[] =

    { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,

static unsigned short normal_i2c[] = {

	I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,

	I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 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_adv7175;

I2C_CLIENT_INSMOD;



static int

adv7175_detect_client (struct i2c_adapter *adapter,

		       int                 address,

		       int                 kind)

static int adv7175_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{

	int i;

	struct i2c_client *client;

	struct adv7175 *encoder;

	char *dname;



	dprintk(1,

		KERN_INFO

		"adv7175.c: detecting adv7175 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;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))

		return -ENODEV;



	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);

	if (!client)

		return -ENOMEM;

	client->addr = address;

	client->adapter = adapter;

	client->driver = &i2c_driver_adv7175;

	if ((client->addr == I2C_ADV7175 >> 1) ||

	    (client->addr == (I2C_ADV7175 >> 1) + 1)) {

		dname = adv7175_name;

	} else if ((client->addr == I2C_ADV7176 >> 1) ||

		   (client->addr == (I2C_ADV7176 >> 1) + 1)) {

		dname = adv7176_name;

	} else {

		/* We should never get here!!! */

		kfree(client);

		return 0;

	}

	strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));

	v4l_info(client, "chip found @ 0x%x (%s)\n",

			client->addr << 1, client->adapter->name);



	encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);

	if (encoder == NULL) {

		kfree(client);

	if (encoder == NULL)

		return -ENOMEM;

	}

	encoder->norm = VIDEO_MODE_PAL;

	encoder->input = 0;

	encoder->enable = 1;

	i2c_set_clientdata(client, encoder);



	i = i2c_attach_client(client);

	if (i) {

		kfree(client);

		kfree(encoder);

		return i;

	}



	i = adv7175_write_block(client, init_common, sizeof(init_common));

	if (i >= 0) {

		i = adv7175_write(client, 0x07, TR0MODE | TR0RST);

		i = adv7175_write(client, 0x07, TR0MODE);

		i = adv7175_read(client, 0x12);

		dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n",

			I2C_NAME(client), i & 1, client->addr << 1);

		v4l_dbg(1, debug, client, "revision %d\n", i & 1);

	}

	if (i < 0) {

		dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",

			I2C_NAME(client), i);

	}



	if (i < 0)

		v4l_dbg(1, debug, client, "init error 0x%x\n", i);

	return 0;

}



static int

adv7175_attach_adapter (struct i2c_adapter *adapter)

{

	dprintk(1,

		KERN_INFO

		"adv7175.c: starting probe for adapter %s (0x%x)\n",

		I2C_NAME(adapter), adapter->id);

	return i2c_probe(adapter, &addr_data, &adv7175_detect_client);

}



static int

adv7175_detach_client (struct i2c_client *client)

static int adv7175_remove(struct i2c_client *client)

{

	struct adv7175 *encoder = i2c_get_clientdata(client);

	int err;



	err = i2c_detach_client(client);

	if (err) {

		return err;

	}



	kfree(encoder);

	kfree(client);



	kfree(i2c_get_clientdata(client));

	return 0;

}



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



static struct i2c_driver i2c_driver_adv7175 = {

	.driver = {

		.name = "adv7175",	/* name */

	},



	.id = I2C_DRIVERID_ADV7175,

static const struct i2c_device_id adv7175_id[] = {

	{ "adv7175", 0 },

	{ "adv7176", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, adv7175_id);



	.attach_adapter = adv7175_attach_adapter,

	.detach_client = adv7175_detach_client,

static struct v4l2_i2c_driver_data v4l2_i2c_data = {

	.name = "adv7175",

	.driverid = I2C_DRIVERID_ADV7175,

	.command = adv7175_command,

	.probe = adv7175_probe,

	.remove = adv7175_remove,

	.id_table = adv7175_id,

};
 


static int __init

adv7175_init (void)

{

	return i2c_add_driver(&i2c_driver_adv7175);

}



static void __exit

adv7175_exit (void)

{

	i2c_del_driver(&i2c_driver_adv7175);

}



module_init(adv7175_init);

module_exit(adv7175_exit);