V4L/DVB (5522): Usbvision: i2c function cleanups

usbvision-i2c function renamings, code cleanup

Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c
index fee4548a9cc753ffedd572318c43ab8617b8dbec..bcb551adb7e6c650be4d850fa6c80b26bf711506 100644 (file)
--- 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 609e1fd9c784f7304442f1b856ff01fcb9bde7ea..7a28081eb9343f619713a2c495d5398df05a1a54 100644 (file)
--- 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 <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;
 
-       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 5fb89e407f088249c6e4470ec2b683e77a4d9fd8..04131cebf395ea9704c28698589d0831984c145e 100644 (file)
--- 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 9cad77733400037dad62656eeac07f57917a5d3c..bd6f6422ed5417053a61475ccab29e11bec02ea1 100644 (file)
--- 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                                      */