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Commit 1ff16c20 authored by Thierry MERLE's avatar Thierry MERLE Committed by Mauro Carvalho Chehab
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V4L/DVB (5522): Usbvision: i2c function cleanups 



usbvision-i2c function renamings, code cleanup

Signed-off-by: default avatarThierry MERLE <thierry.merle@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent d3df9c4f

drivers/media/video/usbvision/usbvision-core.c

+1 −1
Original line number Diff line number Diff line
@@ -2238,7 +2238,7 @@ static void call_usbvision_power_off(struct work_struct *work) 
	PDEBUG(DBG_FUNC, "");

	down_interruptible(&usbvision->lock);

	if(usbvision->user == 0) {

		usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);

		usbvision_i2c_unregister(usbvision);



		usbvision_power_off(usbvision);

		usbvision->initialized = 0;

drivers/media/video/usbvision/usbvision-i2c.c

+57 −79
Original line number Diff line number Diff line 
/*

 * I2C_ALGO_USB.C

 * usbvision_i2c.c

 *  i2c algorithm for USB-I2C Bridges

 *

 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>

 * Copyright (c) 1999-2007 Joerg Heckenbach <joerg@heckenbach-aw.de>

 *                         Dwaine Garden <dwainegarden@rogers.com>

 *

 * This module is part of usbvision driver project.
@@ -39,7 +39,6 @@ 
#include "usbvision.h"



#define DBG_I2C		1<<0

#define DBG_ALGO	1<<1



static int i2c_debug = 0;
@@ -49,22 +48,22 @@ MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]"); 
#define PDEBUG(level, fmt, args...) \

		if (i2c_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)



static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,

static int usbvision_i2c_write(struct usb_usbvision *usbvision, unsigned char addr, char *buf,

			    short len);

static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,

static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char addr, char *buf,

			   short len);



static inline int try_write_address(struct i2c_adapter *i2c_adap,

				    unsigned char addr, int retries)

{

	void *data;

	struct usb_usbvision *usbvision;

	int i, ret = -1;

	char buf[4];



	data = i2c_get_adapdata(i2c_adap);

	usbvision = i2c_get_adapdata(i2c_adap);

	buf[0] = 0x00;

	for (i = 0; i <= retries; i++) {

		ret = (usbvision_i2c_write(data, addr, buf, 1));

		ret = (usbvision_i2c_write(usbvision, addr, buf, 1));

		if (ret == 1)

			break;	/* success! */

		udelay(5);
@@ -73,8 +72,8 @@ static inline int try_write_address(struct i2c_adapter *i2c_adap, 
		udelay(10);

	}

	if (i) {

		PDEBUG(DBG_ALGO,"Needed %d retries for address %#2x", i, addr);

		PDEBUG(DBG_ALGO,"Maybe there's no device at this address");

		PDEBUG(DBG_I2C,"Needed %d retries for address %#2x", i, addr);

		PDEBUG(DBG_I2C,"Maybe there's no device at this address");

	}

	return ret;

}
@@ -82,13 +81,13 @@ static inline int try_write_address(struct i2c_adapter *i2c_adap, 
static inline int try_read_address(struct i2c_adapter *i2c_adap,

				   unsigned char addr, int retries)

{

	void *data;

	struct usb_usbvision *usbvision;

	int i, ret = -1;

	char buf[4];



	data = i2c_get_adapdata(i2c_adap);

	usbvision = i2c_get_adapdata(i2c_adap);

	for (i = 0; i <= retries; i++) {

		ret = (usbvision_i2c_read(data, addr, buf, 1));

		ret = (usbvision_i2c_read(usbvision, addr, buf, 1));

		if (ret == 1)

			break;	/* success! */

		udelay(5);
@@ -97,8 +96,8 @@ static inline int try_read_address(struct i2c_adapter *i2c_adap, 
		udelay(10);

	}

	if (i) {

		PDEBUG(DBG_ALGO,"Needed %d retries for address %#2x", i, addr);

		PDEBUG(DBG_ALGO,"Maybe there's no device at this address");

		PDEBUG(DBG_I2C,"Needed %d retries for address %#2x", i, addr);

		PDEBUG(DBG_I2C,"Maybe there's no device at this address");

	}

	return ret;

}
@@ -152,32 +151,31 @@ static inline int usb_find_address(struct i2c_adapter *i2c_adap, 
}



static int

usb_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)

usbvision_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)

{

	struct i2c_msg *pmsg;

	void *data;

	struct usb_usbvision *usbvision;

	int i, ret;

	unsigned char addr;



	data = i2c_get_adapdata(i2c_adap);



	usbvision = i2c_get_adapdata(i2c_adap);

	for (i = 0; i < num; i++) {

		pmsg = &msgs[i];

		ret = usb_find_address(i2c_adap, pmsg, i2c_adap->retries, &addr);

		if (ret != 0) {

			PDEBUG(DBG_ALGO,"got NAK from device, message #%d", i);

			PDEBUG(DBG_I2C,"got NAK from device, message #%d", i);

			return (ret < 0) ? ret : -EREMOTEIO;

		}



		if (pmsg->flags & I2C_M_RD) {

			/* read bytes into buffer */

			ret = (usbvision_i2c_read(data, addr, pmsg->buf, pmsg->len));

			ret = (usbvision_i2c_read(usbvision, addr, pmsg->buf, pmsg->len));

			if (ret < pmsg->len) {

				return (ret < 0) ? ret : -EREMOTEIO;

			}

		} else {

			/* write bytes from buffer */

			ret = (usbvision_i2c_write(data, addr, pmsg->buf, pmsg->len));

			ret = (usbvision_i2c_write(usbvision, addr, pmsg->buf, pmsg->len));

			if (ret < pmsg->len) {

				return (ret < 0) ? ret : -EREMOTEIO;

			}
@@ -191,7 +189,7 @@ static int algo_control(struct i2c_adapter *adapter, unsigned int cmd, unsigned 
	return 0;

}



static u32 usb_func(struct i2c_adapter *adap)

static u32 functionality(struct i2c_adapter *adap)

{

	return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;

}
@@ -199,73 +197,44 @@ static u32 usb_func(struct i2c_adapter *adap) 


/* -----exported algorithm data: -------------------------------------	*/



static struct i2c_algorithm i2c_usb_algo = {

	.master_xfer   = usb_xfer,

static struct i2c_algorithm usbvision_algo = {

	.master_xfer   = usbvision_i2c_xfer,

	.smbus_xfer    = NULL,

	.algo_control  = algo_control,

	.functionality = usb_func,

	.functionality = functionality,

};





/*

 * registering functions to load algorithms at runtime

 */

static int usbvision_i2c_usb_add_bus(struct i2c_adapter *adap)

{

	PDEBUG(DBG_I2C, "I2C   debugging is enabled [i2c]");

	PDEBUG(DBG_ALGO, "ALGO   debugging is enabled [i2c]");



	/* register new adapter to i2c module... */



	adap->algo = &i2c_usb_algo;



	adap->timeout = 100;	/* default values, should       */

	adap->retries = 3;	/* be replaced by defines       */



	i2c_add_adapter(adap);



	PDEBUG(DBG_ALGO,"i2c bus for %s registered", adap->name);



	return 0;

}





int usbvision_i2c_usb_del_bus(struct i2c_adapter *adap)

{



	i2c_del_adapter(adap);



	PDEBUG(DBG_ALGO,"i2c bus for %s unregistered", adap->name);



	return 0;

}





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

/* usbvision specific I2C functions                                        */

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

static struct i2c_adapter i2c_adap_template;

static struct i2c_client i2c_client_template;



int usbvision_init_i2c(struct usb_usbvision *usbvision)

int usbvision_i2c_register(struct usb_usbvision *usbvision)

{

	memcpy(&usbvision->i2c_adap, &i2c_adap_template,

	       sizeof(struct i2c_adapter));

	memcpy(&usbvision->i2c_client, &i2c_client_template,

	       sizeof(struct i2c_client));

	int ret;



	sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),

		" #%d", usbvision->vdev->minor & 0x1f);

	PDEBUG(DBG_I2C,"Adaptername: %s", usbvision->i2c_adap.name);

	usbvision->i2c_adap = i2c_adap_template;

	usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;



	PDEBUG(DBG_I2C, "I2C   debugging is enabled [i2c]");



	sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),

		" #%d", usbvision->vdev->minor & 0x1f);

	PDEBUG(DBG_I2C,"I2C Registering adaptername: %s", usbvision->i2c_adap.name);

	i2c_set_adapdata(&usbvision->i2c_adap,usbvision);

	i2c_set_clientdata(&usbvision->i2c_client, usbvision);

	if ((ret = i2c_add_adapter(&usbvision->i2c_adap)) < 0) {

		PDEBUG(DBG_I2C,"could not add I2C adapter %s", usbvision->i2c_adap.name);

		return ret;

	}



	/* TODO: use i2c_client for eeprom detection as an example... */

	usbvision->i2c_client = i2c_client_template;

	usbvision->i2c_client.adapter = &usbvision->i2c_adap;



	if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {

		printk(KERN_ERR "usbvision_init_i2c: can't write reg\n");

		printk(KERN_ERR "usbvision_i2c_register: can't write reg\n");

		return -EBUSY;

	}
@@ -284,7 +253,17 @@ int usbvision_init_i2c(struct usb_usbvision *usbvision) 
	}

#endif



	return usbvision_i2c_usb_add_bus(&usbvision->i2c_adap);

	return 0;

}



int usbvision_i2c_unregister(struct usb_usbvision *usbvision)

{



	i2c_del_adapter(&(usbvision->i2c_adap));



	PDEBUG(DBG_I2C,"i2c bus for %s unregistered", usbvision->i2c_adap.name);



	return 0;

}



void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
@@ -297,8 +276,7 @@ static int attach_inform(struct i2c_client *client) 
{

	struct usb_usbvision *usbvision;



	usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);



	usbvision = i2c_get_adapdata(client->adapter);

	switch (client->addr << 1) {

		case 0x43:

		case 0x4b:
@@ -349,7 +327,7 @@ static int detach_inform(struct i2c_client *client) 
{

	struct usb_usbvision *usbvision;



	usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);

	usbvision = i2c_get_adapdata(client->adapter);



	PDEBUG(DBG_I2C,"usbvision[%d] detaches %s", usbvision->nr, client->name);

	return 0;
@@ -480,7 +458,7 @@ static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision, 
	return len;

}



static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,

static int usbvision_i2c_write(struct usb_usbvision *usbvision, unsigned char addr, char *buf,

			    short len)

{

	char *bufPtr = buf;
@@ -488,7 +466,6 @@ static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, 
	int wrcount = 0;

	int count;

	int maxLen = 4;

	struct usb_usbvision *usbvision = (struct usb_usbvision *) data;



	while (len > 0) {

		count = (len > maxLen) ? maxLen : len;
@@ -503,14 +480,13 @@ static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, 
	return wrcount;

}



static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,

static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char addr, char *buf,

			   short len)

{

	char temp[4];

	int retval, i;

	int rdcount = 0;

	int count;

	struct usb_usbvision *usbvision = (struct usb_usbvision *) data;



	while (len > 0) {

		count = (len > 3) ? 4 : len;
@@ -530,6 +506,8 @@ static struct i2c_adapter i2c_adap_template = { 
	.owner = THIS_MODULE,

	.name              = "usbvision",

	.id                = I2C_HW_B_BT848, /* FIXME */

	.algo = &usbvision_algo,

	.algo_data = NULL,

	.client_register   = attach_inform,

	.client_unregister = detach_inform,

#ifdef I2C_ADAP_CLASS_TV_ANALOG

drivers/media/video/usbvision/usbvision-video.c

+6 −6
Original line number Diff line number Diff line
@@ -410,7 +410,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file) 
		down(&usbvision->lock);

		if (usbvision->power == 0) {

			usbvision_power_on(usbvision);

			usbvision_init_i2c(usbvision);

			usbvision_i2c_register(usbvision);

		}



		/* Send init sequence only once, it's large! */
@@ -432,7 +432,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file) 
		}

		else {

			if (PowerOnAtOpen) {

				usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);

				usbvision_i2c_unregister(usbvision);

				usbvision_power_off(usbvision);

				usbvision->initialized = 0;

			}
@@ -1240,7 +1240,7 @@ static int usbvision_radio_open(struct inode *inode, struct file *file) 
			usbvision_reset_powerOffTimer(usbvision);

			if (usbvision->power == 0) {

				usbvision_power_on(usbvision);

				usbvision_init_i2c(usbvision);

				usbvision_i2c_register(usbvision);

			}

		}
@@ -1262,7 +1262,7 @@ static int usbvision_radio_open(struct inode *inode, struct file *file) 


	if (errCode) {

		if (PowerOnAtOpen) {

			usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);

			usbvision_i2c_unregister(usbvision);

			usbvision_power_off(usbvision);

			usbvision->initialized = 0;

		}
@@ -1765,7 +1765,7 @@ static void usbvision_configure_video(struct usb_usbvision *usbvision) 
	usbvision_audio_off(usbvision);	//first switch off audio

	if (!PowerOnAtOpen) {

		usbvision_power_on(usbvision);	//and then power up the noisy tuner

		usbvision_init_i2c(usbvision);

		usbvision_i2c_register(usbvision);

	}

}
@@ -1913,7 +1913,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) 
	usbvision_stop_isoc(usbvision);



	if (usbvision->power) {

		usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);

		usbvision_i2c_unregister(usbvision);

		usbvision_power_off(usbvision);

	}

	usbvision->remove_pending = 1;	// Now all ISO data will be ignored

drivers/media/video/usbvision/usbvision.h

+2 −4
Original line number Diff line number Diff line
@@ -482,13 +482,11 @@ struct usb_usbvision { 
/* i2c-algo-usb declaration                                        */

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



int usbvision_i2c_usb_del_bus(struct i2c_adapter *);





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

/* usbvision specific I2C functions                                        */

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

int usbvision_init_i2c(struct usb_usbvision *usbvision);

int usbvision_i2c_register(struct usb_usbvision *usbvision);

int usbvision_i2c_unregister(struct usb_usbvision *usbvision);

void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);



/* defined in usbvision-core.c                                      */