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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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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>
This commit is contained in:
parent
d3df9c4fa1
commit
1ff16c2091
4 changed files with 66 additions and 90 deletions
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@ -2238,7 +2238,7 @@ static void call_usbvision_power_off(struct work_struct *work)
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PDEBUG(DBG_FUNC, "");
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PDEBUG(DBG_FUNC, "");
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down_interruptible(&usbvision->lock);
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down_interruptible(&usbvision->lock);
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if(usbvision->user == 0) {
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if(usbvision->user == 0) {
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usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
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usbvision_i2c_unregister(usbvision);
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usbvision_power_off(usbvision);
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usbvision_power_off(usbvision);
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usbvision->initialized = 0;
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usbvision->initialized = 0;
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@ -1,8 +1,8 @@
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/*
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/*
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* I2C_ALGO_USB.C
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* usbvision_i2c.c
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* i2c algorithm for USB-I2C Bridges
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* i2c algorithm for USB-I2C Bridges
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*
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*
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* Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
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* Copyright (c) 1999-2007 Joerg Heckenbach <joerg@heckenbach-aw.de>
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* Dwaine Garden <dwainegarden@rogers.com>
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* Dwaine Garden <dwainegarden@rogers.com>
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*
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*
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* This module is part of usbvision driver project.
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* This module is part of usbvision driver project.
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@ -39,7 +39,6 @@
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#include "usbvision.h"
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#include "usbvision.h"
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#define DBG_I2C 1<<0
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#define DBG_I2C 1<<0
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#define DBG_ALGO 1<<1
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static int i2c_debug = 0;
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static int i2c_debug = 0;
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@ -49,22 +48,22 @@ MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
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#define PDEBUG(level, fmt, args...) \
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#define PDEBUG(level, fmt, args...) \
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if (i2c_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
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if (i2c_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
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static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
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static int usbvision_i2c_write(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
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short len);
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short len);
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static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,
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static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
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short len);
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short len);
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static inline int try_write_address(struct i2c_adapter *i2c_adap,
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static inline int try_write_address(struct i2c_adapter *i2c_adap,
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unsigned char addr, int retries)
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unsigned char addr, int retries)
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{
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{
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void *data;
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struct usb_usbvision *usbvision;
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int i, ret = -1;
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int i, ret = -1;
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char buf[4];
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char buf[4];
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data = i2c_get_adapdata(i2c_adap);
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usbvision = i2c_get_adapdata(i2c_adap);
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buf[0] = 0x00;
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buf[0] = 0x00;
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for (i = 0; i <= retries; i++) {
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for (i = 0; i <= retries; i++) {
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ret = (usbvision_i2c_write(data, addr, buf, 1));
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ret = (usbvision_i2c_write(usbvision, addr, buf, 1));
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if (ret == 1)
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if (ret == 1)
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break; /* success! */
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break; /* success! */
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udelay(5);
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udelay(5);
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@ -73,8 +72,8 @@ static inline int try_write_address(struct i2c_adapter *i2c_adap,
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udelay(10);
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udelay(10);
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}
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}
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if (i) {
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if (i) {
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PDEBUG(DBG_ALGO,"Needed %d retries for address %#2x", i, addr);
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PDEBUG(DBG_I2C,"Needed %d retries for address %#2x", i, addr);
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PDEBUG(DBG_ALGO,"Maybe there's no device at this address");
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PDEBUG(DBG_I2C,"Maybe there's no device at this address");
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}
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}
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return ret;
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return ret;
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}
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}
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@ -82,13 +81,13 @@ static inline int try_write_address(struct i2c_adapter *i2c_adap,
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static inline int try_read_address(struct i2c_adapter *i2c_adap,
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static inline int try_read_address(struct i2c_adapter *i2c_adap,
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unsigned char addr, int retries)
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unsigned char addr, int retries)
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{
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{
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void *data;
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struct usb_usbvision *usbvision;
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int i, ret = -1;
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int i, ret = -1;
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char buf[4];
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char buf[4];
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data = i2c_get_adapdata(i2c_adap);
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usbvision = i2c_get_adapdata(i2c_adap);
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for (i = 0; i <= retries; i++) {
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for (i = 0; i <= retries; i++) {
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ret = (usbvision_i2c_read(data, addr, buf, 1));
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ret = (usbvision_i2c_read(usbvision, addr, buf, 1));
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if (ret == 1)
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if (ret == 1)
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break; /* success! */
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break; /* success! */
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udelay(5);
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udelay(5);
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@ -97,8 +96,8 @@ static inline int try_read_address(struct i2c_adapter *i2c_adap,
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udelay(10);
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udelay(10);
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}
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}
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if (i) {
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if (i) {
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PDEBUG(DBG_ALGO,"Needed %d retries for address %#2x", i, addr);
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PDEBUG(DBG_I2C,"Needed %d retries for address %#2x", i, addr);
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PDEBUG(DBG_ALGO,"Maybe there's no device at this address");
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PDEBUG(DBG_I2C,"Maybe there's no device at this address");
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}
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}
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return ret;
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return ret;
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}
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}
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@ -152,32 +151,31 @@ static inline int usb_find_address(struct i2c_adapter *i2c_adap,
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}
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}
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static int
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static int
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usb_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
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usbvision_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
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{
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{
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struct i2c_msg *pmsg;
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struct i2c_msg *pmsg;
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void *data;
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struct usb_usbvision *usbvision;
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int i, ret;
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int i, ret;
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unsigned char addr;
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unsigned char addr;
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data = i2c_get_adapdata(i2c_adap);
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usbvision = i2c_get_adapdata(i2c_adap);
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for (i = 0; i < num; i++) {
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for (i = 0; i < num; i++) {
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pmsg = &msgs[i];
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pmsg = &msgs[i];
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ret = usb_find_address(i2c_adap, pmsg, i2c_adap->retries, &addr);
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ret = usb_find_address(i2c_adap, pmsg, i2c_adap->retries, &addr);
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if (ret != 0) {
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if (ret != 0) {
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PDEBUG(DBG_ALGO,"got NAK from device, message #%d", i);
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PDEBUG(DBG_I2C,"got NAK from device, message #%d", i);
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return (ret < 0) ? ret : -EREMOTEIO;
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return (ret < 0) ? ret : -EREMOTEIO;
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}
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}
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if (pmsg->flags & I2C_M_RD) {
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if (pmsg->flags & I2C_M_RD) {
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/* read bytes into buffer */
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/* read bytes into buffer */
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ret = (usbvision_i2c_read(data, addr, pmsg->buf, pmsg->len));
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ret = (usbvision_i2c_read(usbvision, addr, pmsg->buf, pmsg->len));
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if (ret < pmsg->len) {
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if (ret < pmsg->len) {
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return (ret < 0) ? ret : -EREMOTEIO;
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return (ret < 0) ? ret : -EREMOTEIO;
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}
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}
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} else {
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} else {
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/* write bytes from buffer */
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/* write bytes from buffer */
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ret = (usbvision_i2c_write(data, addr, pmsg->buf, pmsg->len));
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ret = (usbvision_i2c_write(usbvision, addr, pmsg->buf, pmsg->len));
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if (ret < pmsg->len) {
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if (ret < pmsg->len) {
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return (ret < 0) ? ret : -EREMOTEIO;
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return (ret < 0) ? ret : -EREMOTEIO;
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}
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}
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@ -191,7 +189,7 @@ static int algo_control(struct i2c_adapter *adapter, unsigned int cmd, unsigned
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return 0;
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return 0;
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}
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}
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static u32 usb_func(struct i2c_adapter *adap)
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static u32 functionality(struct i2c_adapter *adap)
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{
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{
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return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;
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return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;
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}
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}
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@ -199,73 +197,44 @@ static u32 usb_func(struct i2c_adapter *adap)
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/* -----exported algorithm data: ------------------------------------- */
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/* -----exported algorithm data: ------------------------------------- */
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static struct i2c_algorithm i2c_usb_algo = {
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static struct i2c_algorithm usbvision_algo = {
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.master_xfer = usb_xfer,
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.master_xfer = usbvision_i2c_xfer,
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.smbus_xfer = NULL,
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.smbus_xfer = NULL,
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.algo_control = algo_control,
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.algo_control = algo_control,
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.functionality = usb_func,
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.functionality = functionality,
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};
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};
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/*
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* registering functions to load algorithms at runtime
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*/
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static int usbvision_i2c_usb_add_bus(struct i2c_adapter *adap)
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{
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PDEBUG(DBG_I2C, "I2C debugging is enabled [i2c]");
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PDEBUG(DBG_ALGO, "ALGO debugging is enabled [i2c]");
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/* register new adapter to i2c module... */
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adap->algo = &i2c_usb_algo;
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adap->timeout = 100; /* default values, should */
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adap->retries = 3; /* be replaced by defines */
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i2c_add_adapter(adap);
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PDEBUG(DBG_ALGO,"i2c bus for %s registered", adap->name);
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return 0;
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}
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int usbvision_i2c_usb_del_bus(struct i2c_adapter *adap)
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{
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i2c_del_adapter(adap);
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PDEBUG(DBG_ALGO,"i2c bus for %s unregistered", adap->name);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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/* ----------------------------------------------------------------------- */
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/* usbvision specific I2C functions */
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/* usbvision specific I2C functions */
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/* ----------------------------------------------------------------------- */
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/* ----------------------------------------------------------------------- */
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static struct i2c_adapter i2c_adap_template;
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static struct i2c_adapter i2c_adap_template;
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static struct i2c_client i2c_client_template;
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static struct i2c_client i2c_client_template;
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int usbvision_init_i2c(struct usb_usbvision *usbvision)
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int usbvision_i2c_register(struct usb_usbvision *usbvision)
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{
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{
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memcpy(&usbvision->i2c_adap, &i2c_adap_template,
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int ret;
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sizeof(struct i2c_adapter));
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memcpy(&usbvision->i2c_client, &i2c_client_template,
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usbvision->i2c_adap = i2c_adap_template;
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sizeof(struct i2c_client));
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usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;
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PDEBUG(DBG_I2C, "I2C debugging is enabled [i2c]");
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sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
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sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
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" #%d", usbvision->vdev->minor & 0x1f);
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" #%d", usbvision->vdev->minor & 0x1f);
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PDEBUG(DBG_I2C,"Adaptername: %s", usbvision->i2c_adap.name);
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PDEBUG(DBG_I2C,"I2C Registering adaptername: %s", usbvision->i2c_adap.name);
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usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;
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i2c_set_adapdata(&usbvision->i2c_adap,usbvision);
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if ((ret = i2c_add_adapter(&usbvision->i2c_adap)) < 0) {
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i2c_set_adapdata(&usbvision->i2c_adap, usbvision);
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PDEBUG(DBG_I2C,"could not add I2C adapter %s", usbvision->i2c_adap.name);
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i2c_set_clientdata(&usbvision->i2c_client, usbvision);
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return ret;
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}
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/* TODO: use i2c_client for eeprom detection as an example... */
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usbvision->i2c_client = i2c_client_template;
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usbvision->i2c_client.adapter = &usbvision->i2c_adap;
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usbvision->i2c_client.adapter = &usbvision->i2c_adap;
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if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
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if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
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printk(KERN_ERR "usbvision_init_i2c: can't write reg\n");
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printk(KERN_ERR "usbvision_i2c_register: can't write reg\n");
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return -EBUSY;
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return -EBUSY;
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}
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}
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@ -284,7 +253,17 @@ int usbvision_init_i2c(struct usb_usbvision *usbvision)
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}
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}
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#endif
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#endif
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return usbvision_i2c_usb_add_bus(&usbvision->i2c_adap);
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return 0;
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}
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int usbvision_i2c_unregister(struct usb_usbvision *usbvision)
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{
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i2c_del_adapter(&(usbvision->i2c_adap));
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PDEBUG(DBG_I2C,"i2c bus for %s unregistered", usbvision->i2c_adap.name);
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return 0;
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}
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}
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void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
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void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
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@ -297,8 +276,7 @@ static int attach_inform(struct i2c_client *client)
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{
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{
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struct usb_usbvision *usbvision;
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struct usb_usbvision *usbvision;
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usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
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usbvision = i2c_get_adapdata(client->adapter);
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switch (client->addr << 1) {
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switch (client->addr << 1) {
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case 0x43:
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case 0x43:
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case 0x4b:
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case 0x4b:
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@ -349,7 +327,7 @@ static int detach_inform(struct i2c_client *client)
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{
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{
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struct usb_usbvision *usbvision;
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struct usb_usbvision *usbvision;
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usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
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usbvision = i2c_get_adapdata(client->adapter);
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PDEBUG(DBG_I2C,"usbvision[%d] detaches %s", usbvision->nr, client->name);
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PDEBUG(DBG_I2C,"usbvision[%d] detaches %s", usbvision->nr, client->name);
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return 0;
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return 0;
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@ -480,7 +458,7 @@ static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision,
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return len;
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return len;
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}
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}
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static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
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static int usbvision_i2c_write(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
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short len)
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short len)
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{
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{
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char *bufPtr = buf;
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char *bufPtr = buf;
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@ -488,7 +466,6 @@ static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
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int wrcount = 0;
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int wrcount = 0;
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int count;
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int count;
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int maxLen = 4;
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int maxLen = 4;
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struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
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while (len > 0) {
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while (len > 0) {
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count = (len > maxLen) ? maxLen : len;
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count = (len > maxLen) ? maxLen : len;
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@ -503,14 +480,13 @@ static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
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return wrcount;
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return wrcount;
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}
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}
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static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,
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static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
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short len)
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short len)
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{
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{
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char temp[4];
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char temp[4];
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int retval, i;
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int retval, i;
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int rdcount = 0;
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int rdcount = 0;
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int count;
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int count;
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struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
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|
||||||
while (len > 0) {
|
while (len > 0) {
|
||||||
count = (len > 3) ? 4 : len;
|
count = (len > 3) ? 4 : len;
|
||||||
|
@ -530,6 +506,8 @@ static struct i2c_adapter i2c_adap_template = {
|
||||||
.owner = THIS_MODULE,
|
.owner = THIS_MODULE,
|
||||||
.name = "usbvision",
|
.name = "usbvision",
|
||||||
.id = I2C_HW_B_BT848, /* FIXME */
|
.id = I2C_HW_B_BT848, /* FIXME */
|
||||||
|
.algo = &usbvision_algo,
|
||||||
|
.algo_data = NULL,
|
||||||
.client_register = attach_inform,
|
.client_register = attach_inform,
|
||||||
.client_unregister = detach_inform,
|
.client_unregister = detach_inform,
|
||||||
#ifdef I2C_ADAP_CLASS_TV_ANALOG
|
#ifdef I2C_ADAP_CLASS_TV_ANALOG
|
||||||
|
|
|
@ -410,7 +410,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file)
|
||||||
down(&usbvision->lock);
|
down(&usbvision->lock);
|
||||||
if (usbvision->power == 0) {
|
if (usbvision->power == 0) {
|
||||||
usbvision_power_on(usbvision);
|
usbvision_power_on(usbvision);
|
||||||
usbvision_init_i2c(usbvision);
|
usbvision_i2c_register(usbvision);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Send init sequence only once, it's large! */
|
/* Send init sequence only once, it's large! */
|
||||||
|
@ -432,7 +432,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file)
|
||||||
}
|
}
|
||||||
else {
|
else {
|
||||||
if (PowerOnAtOpen) {
|
if (PowerOnAtOpen) {
|
||||||
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
|
usbvision_i2c_unregister(usbvision);
|
||||||
usbvision_power_off(usbvision);
|
usbvision_power_off(usbvision);
|
||||||
usbvision->initialized = 0;
|
usbvision->initialized = 0;
|
||||||
}
|
}
|
||||||
|
@ -1240,7 +1240,7 @@ static int usbvision_radio_open(struct inode *inode, struct file *file)
|
||||||
usbvision_reset_powerOffTimer(usbvision);
|
usbvision_reset_powerOffTimer(usbvision);
|
||||||
if (usbvision->power == 0) {
|
if (usbvision->power == 0) {
|
||||||
usbvision_power_on(usbvision);
|
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 (errCode) {
|
||||||
if (PowerOnAtOpen) {
|
if (PowerOnAtOpen) {
|
||||||
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
|
usbvision_i2c_unregister(usbvision);
|
||||||
usbvision_power_off(usbvision);
|
usbvision_power_off(usbvision);
|
||||||
usbvision->initialized = 0;
|
usbvision->initialized = 0;
|
||||||
}
|
}
|
||||||
|
@ -1765,7 +1765,7 @@ static void usbvision_configure_video(struct usb_usbvision *usbvision)
|
||||||
usbvision_audio_off(usbvision); //first switch off audio
|
usbvision_audio_off(usbvision); //first switch off audio
|
||||||
if (!PowerOnAtOpen) {
|
if (!PowerOnAtOpen) {
|
||||||
usbvision_power_on(usbvision); //and then power up the noisy tuner
|
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);
|
usbvision_stop_isoc(usbvision);
|
||||||
|
|
||||||
if (usbvision->power) {
|
if (usbvision->power) {
|
||||||
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
|
usbvision_i2c_unregister(usbvision);
|
||||||
usbvision_power_off(usbvision);
|
usbvision_power_off(usbvision);
|
||||||
}
|
}
|
||||||
usbvision->remove_pending = 1; // Now all ISO data will be ignored
|
usbvision->remove_pending = 1; // Now all ISO data will be ignored
|
||||||
|
|
|
@ -482,13 +482,11 @@ struct usb_usbvision {
|
||||||
/* i2c-algo-usb declaration */
|
/* i2c-algo-usb declaration */
|
||||||
/* --------------------------------------------------------------- */
|
/* --------------------------------------------------------------- */
|
||||||
|
|
||||||
int usbvision_i2c_usb_del_bus(struct i2c_adapter *);
|
|
||||||
|
|
||||||
|
|
||||||
/* ----------------------------------------------------------------------- */
|
/* ----------------------------------------------------------------------- */
|
||||||
/* usbvision specific I2C functions */
|
/* 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);
|
void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);
|
||||||
|
|
||||||
/* defined in usbvision-core.c */
|
/* defined in usbvision-core.c */
|
||||||
|
|
Loading…
Reference in a new issue