From 1ff16c2091a557f8080eb62c087465a87e4330e9 Mon Sep 17 00:00:00 2001 From: Thierry MERLE Date: Sat, 14 Apr 2007 16:23:49 -0300 Subject: [PATCH] V4L/DVB (5522): Usbvision: i2c function cleanups usbvision-i2c function renamings, code cleanup Signed-off-by: Thierry MERLE Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/usbvision/usbvision-core.c | 2 +- drivers/media/video/usbvision/usbvision-i2c.c | 136 ++++++++++-------------- drivers/media/video/usbvision/usbvision-video.c | 12 +-- drivers/media/video/usbvision/usbvision.h | 6 +- 4 files changed, 66 insertions(+), 90 deletions(-) diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c index fee4548a..bcb551a 100644 --- a/drivers/media/video/usbvision/usbvision-core.c +++ b/drivers/media/video/usbvision/usbvision-core.c @@ -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; diff --git a/drivers/media/video/usbvision/usbvision-i2c.c b/drivers/media/video/usbvision/usbvision-i2c.c index 609e1fd..7a28081 100644 --- a/drivers/media/video/usbvision/usbvision-i2c.c +++ b/drivers/media/video/usbvision/usbvision-i2c.c @@ -1,8 +1,8 @@ /* - * I2C_ALGO_USB.C + * usbvision_i2c.c * i2c algorithm for USB-I2C Bridges * - * Copyright (c) 1999-2005 Joerg Heckenbach + * Copyright (c) 1999-2007 Joerg Heckenbach * Dwaine Garden * * 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; - i2c_set_adapdata(&usbvision->i2c_adap, usbvision); - i2c_set_clientdata(&usbvision->i2c_client, usbvision); + 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); + 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 diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c index 5fb89e4..04131ce 100644 --- a/drivers/media/video/usbvision/usbvision-video.c +++ b/drivers/media/video/usbvision/usbvision-video.c @@ -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 diff --git a/drivers/media/video/usbvision/usbvision.h b/drivers/media/video/usbvision/usbvision.h index 9cad777..bd6f642 100644 --- a/drivers/media/video/usbvision/usbvision.h +++ b/drivers/media/video/usbvision/usbvision.h @@ -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 */ -- 2.7.4