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drivers/power: remove unused bq27510_battery driver
Change-Id: I5ca721e8a5427a42c62af1d4c0825496671a6918 Signed-off-by: Tao Huang <huangtao@rock-chips.com>
This commit is contained in:
Tao Huang
@@ -1,686 +0,0 @@
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/*
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* BQ27510 battery driver
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*
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* This package is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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#include <linux/module.h>
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#include <linux/param.h>
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#include <linux/jiffies.h>
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#include <linux/workqueue.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/idr.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <asm/unaligned.h>
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#include <mach/gpio.h>
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#include <linux/proc_fs.h>
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#include <asm/uaccess.h>
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#include <mach/board.h>
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#define DRIVER_VERSION "1.1.0"
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#define BQ27x00_REG_TEMP 0x06
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#define BQ27x00_REG_VOLT 0x08
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#define BQ27x00_REG_AI 0x14
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#define BQ27x00_REG_FLAGS 0x0A
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#define BQ27x00_REG_TTE 0x16
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#define BQ27x00_REG_TTF 0x18
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#define BQ27x00_REG_TTECP 0x26
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#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */
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#define BQ27500_REG_SOC 0x2c
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#define BQ27500_FLAG_DSC BIT(0)
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#define BQ27000_FLAG_CHGS BIT(8)
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#define BQ27500_FLAG_FC BIT(9)
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#define BQ27500_FLAG_OTD BIT(14)
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#define BQ27500_FLAG_OTC BIT(15)
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#define BQ27510_SPEED 300 * 1000
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int virtual_battery_enable = 0;
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extern int dwc_vbus_status(void);
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static void bq27510_set(void);
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#if 0
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#define DBG(x...) printk(KERN_INFO x)
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#else
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#define DBG(x...) do { } while (0)
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#endif
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/* If the system has several batteries we need a different name for each
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* of them...
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*/
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static DEFINE_MUTEX(battery_mutex);
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struct bq27510_device_info {
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struct device *dev;
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struct power_supply bat;
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struct power_supply ac;
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struct delayed_work work;
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struct i2c_client *client;
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unsigned int interval;
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unsigned int dc_check_pin;
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unsigned int bat_num;
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};
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static struct bq27510_device_info *bq27510_di;
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static enum power_supply_property bq27510_battery_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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POWER_SUPPLY_PROP_CAPACITY,
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POWER_SUPPLY_PROP_TEMP,
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POWER_SUPPLY_PROP_TECHNOLOGY,
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POWER_SUPPLY_PROP_HEALTH,
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//POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
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//POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
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//POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
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};
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static enum power_supply_property rk29_ac_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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static ssize_t battery_proc_write(struct file *file,const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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char c;
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int rc;
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printk("USER:\n");
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printk("echo x >/proc/driver/power\n");
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printk("x=1,means just print log ||x=2,means log and data ||x= other,means close log\n");
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rc = get_user(c,buffer);
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if(rc)
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return rc;
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//added by zwp,c='8' means check whether we need to download firmware to bq27xxx,return 0 means yes.
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if(c == '8'){
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printk("%s,bq27510 need to download firmware\n",__FUNCTION__);
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}
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if(c == '1')
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virtual_battery_enable = 1;
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else if(c == '2')
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virtual_battery_enable = 2;
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else if(c == '3')
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virtual_battery_enable = 3;
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else if(c == '9'){
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printk("%s:%d>>bq27510 set\n",__FUNCTION__,__LINE__);
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bq27510_set();
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}
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else
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virtual_battery_enable = 0;
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printk("%s,count(%d),virtual_battery_enable(%d)\n",__FUNCTION__,(int)count,virtual_battery_enable);
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return count;
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}
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static const struct file_operations battery_proc_fops = {
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.owner = THIS_MODULE,
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.write = battery_proc_write,
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};
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/*
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* Common code for BQ27510 devices read
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*/
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static int bq27510_read(struct i2c_client *client, u8 reg, u8 buf[], unsigned len)
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{
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int ret;
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ret = i2c_master_reg8_recv(client, reg, buf, len, BQ27510_SPEED);
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return ret;
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}
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static int bq27510_write(struct i2c_client *client, u8 reg, u8 const buf[], unsigned len)
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{
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int ret;
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ret = i2c_master_reg8_send(client, reg, buf, (int)len, BQ27510_SPEED);
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return ret;
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}
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/*
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* Return the battery temperature in tenths of degree Celsius
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* Or < 0 if something fails.
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*/
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static int bq27510_battery_temperature(struct bq27510_device_info *di)
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{
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int ret;
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int temp = 0;
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u8 buf[2];
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#if defined (CONFIG_NO_BATTERY_IC)
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return 258;
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#endif
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if(virtual_battery_enable == 1)
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return 125/*258*/;
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ret = bq27510_read(di->client,BQ27x00_REG_TEMP,buf,2);
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if (ret<0) {
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dev_err(di->dev, "error reading temperature\n");
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return ret;
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}
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temp = get_unaligned_le16(buf);
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temp = temp - 2731;
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DBG("Enter:%s %d--temp = %d\n",__FUNCTION__,__LINE__,temp);
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return temp;
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}
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/*
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* Return the battery Voltage in milivolts
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* Or < 0 if something fails.
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*/
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static int bq27510_battery_voltage(struct bq27510_device_info *di)
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{
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int ret;
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u8 buf[2];
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int volt = 0;
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#if defined (CONFIG_NO_BATTERY_IC)
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return 4000000;
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#endif
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if(virtual_battery_enable == 1)
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return 2000000/*4000000*/;
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ret = bq27510_read(di->client,BQ27x00_REG_VOLT,buf,2);
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if (ret<0) {
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dev_err(di->dev, "error reading voltage\n");
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return ret;
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}
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volt = get_unaligned_le16(buf);
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//bp27510 can only measure one li-lion bat
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if(di->bat_num == 2){
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volt = volt * 1000 * 2;
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}else{
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volt = volt * 1000;
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}
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DBG("Enter:%s %d--volt = %d\n",__FUNCTION__,__LINE__,volt);
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return volt;
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}
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/*
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* Return the battery average current
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* Note that current can be negative signed as well
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* Or 0 if something fails.
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*/
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static int bq27510_battery_current(struct bq27510_device_info *di)
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{
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int ret;
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int curr = 0;
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u8 buf[2];
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#if defined (CONFIG_NO_BATTERY_IC)
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return 22000;
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#endif
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if(virtual_battery_enable == 1)
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return 11000/*22000*/;
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ret = bq27510_read(di->client,BQ27x00_REG_AI,buf,2);
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if (ret<0) {
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dev_err(di->dev, "error reading current\n");
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return 0;
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}
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curr = get_unaligned_le16(buf);
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DBG("curr = %x \n",curr);
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if(curr>0x8000){
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curr = 0xFFFF^(curr-1);
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}
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curr = curr * 1000;
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DBG("Enter:%s %d--curr = %d\n",__FUNCTION__,__LINE__,curr);
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return curr;
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}
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/*
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* Return the battery Relative State-of-Charge
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* Or < 0 if something fails.
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*/
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static int bq27510_battery_rsoc(struct bq27510_device_info *di)
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{
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int ret;
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int rsoc = 0;
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#if 0
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int nvcap = 0,facap = 0,remcap=0,fccap=0,full=0,cnt=0;
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int art = 0, artte = 0, ai = 0, tte = 0, ttf = 0, si = 0;
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int stte = 0, mli = 0, mltte = 0, ae = 0, ap = 0, ttecp = 0, cc = 0;
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#endif
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u8 buf[2];
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#if defined (CONFIG_NO_BATTERY_IC)
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return 100;
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#endif
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if(virtual_battery_enable == 1)
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return 50/*100*/;
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ret = bq27510_read(di->client,BQ27500_REG_SOC,buf,2);
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if (ret<0) {
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dev_err(di->dev, "error reading relative State-of-Charge\n");
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return ret;
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}
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rsoc = get_unaligned_le16(buf);
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DBG("Enter:%s %d--rsoc = %d\n",__FUNCTION__,__LINE__,rsoc);
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#if defined (CONFIG_NO_BATTERY_IC)
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rsoc = 100;
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#endif
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#if 0 //other register information, for debug use
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ret = bq27510_read(di->client,0x0c,buf,2); //NominalAvailableCapacity
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nvcap = get_unaligned_le16(buf);
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DBG("\nEnter:%s %d--nvcap = %d\n",__FUNCTION__,__LINE__,nvcap);
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ret = bq27510_read(di->client,0x0e,buf,2); //FullAvailableCapacity
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facap = get_unaligned_le16(buf);
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DBG("Enter:%s %d--facap = %d\n",__FUNCTION__,__LINE__,facap);
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ret = bq27510_read(di->client,0x10,buf,2); //RemainingCapacity
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remcap = get_unaligned_le16(buf);
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DBG("Enter:%s %d--remcap = %d\n",__FUNCTION__,__LINE__,remcap);
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ret = bq27510_read(di->client,0x12,buf,2); //FullChargeCapacity
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fccap = get_unaligned_le16(buf);
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DBG("Enter:%s %d--fccap = %d\n",__FUNCTION__,__LINE__,fccap);
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ret = bq27510_read(di->client,0x3c,buf,2); //DesignCapacity
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full = get_unaligned_le16(buf);
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DBG("Enter:%s %d--DesignCapacity = %d\n",__FUNCTION__,__LINE__,full);
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buf[0] = 0x00; //CONTROL_STATUS
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buf[1] = 0x00;
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bq27510_write(di->client,0x00,buf,2);
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ret = bq27510_read(di->client,0x00,buf,2);
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cnt = get_unaligned_le16(buf);
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DBG("Enter:%s %d--Control status = %x\n",__FUNCTION__,__LINE__,cnt);
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ret = bq27510_read(di->client,0x02,buf,2); //AtRate
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art = get_unaligned_le16(buf);
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DBG("Enter:%s %d--AtRate = %d\n",__FUNCTION__,__LINE__,art);
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ret = bq27510_read(di->client,0x04,buf,2); //AtRateTimeToEmpty
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artte = get_unaligned_le16(buf);
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DBG("Enter:%s %d--AtRateTimeToEmpty = %d\n",__FUNCTION__,__LINE__,artte);
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ret = bq27510_read(di->client,0x14,buf,2); //AverageCurrent
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ai = get_unaligned_le16(buf);
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DBG("Enter:%s %d--AverageCurrent = %d\n",__FUNCTION__,__LINE__,ai);
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ret = bq27510_read(di->client,0x16,buf,2); //TimeToEmpty
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tte = get_unaligned_le16(buf);
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DBG("Enter:%s %d--TimeToEmpty = %d\n",__FUNCTION__,__LINE__,tte);
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ret = bq27510_read(di->client,0x18,buf,2); //TimeToFull
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ttf = get_unaligned_le16(buf);
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DBG("Enter:%s %d--TimeToFull = %d\n",__FUNCTION__,__LINE__,ttf);
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ret = bq27510_read(di->client,0x1a,buf,2); //StandbyCurrent
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si = get_unaligned_le16(buf);
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DBG("Enter:%s %d--StandbyCurrent = %d\n",__FUNCTION__,__LINE__,si);
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ret = bq27510_read(di->client,0x1c,buf,2); //StandbyTimeToEmpty
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stte = get_unaligned_le16(buf);
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DBG("Enter:%s %d--StandbyTimeToEmpty = %d\n",__FUNCTION__,__LINE__,stte);
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ret = bq27510_read(di->client,0x1e,buf,2); //MaxLoadCurrent
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mli = get_unaligned_le16(buf);
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DBG("Enter:%s %d--MaxLoadCurrent = %d\n",__FUNCTION__,__LINE__,mli);
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ret = bq27510_read(di->client,0x20,buf,2); //MaxLoadTimeToEmpty
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mltte = get_unaligned_le16(buf);
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DBG("Enter:%s %d--MaxLoadTimeToEmpty = %d\n",__FUNCTION__,__LINE__,mltte);
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ret = bq27510_read(di->client,0x22,buf,2); //AvailableEnergy
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ae = get_unaligned_le16(buf);
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DBG("Enter:%s %d--AvailableEnergy = %d\n",__FUNCTION__,__LINE__,ae);
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ret = bq27510_read(di->client,0x24,buf,2); //AveragePower
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ap = get_unaligned_le16(buf);
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DBG("Enter:%s %d--AveragePower = %d\n",__FUNCTION__,__LINE__,ap);
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ret = bq27510_read(di->client,0x26,buf,2); //TTEatConstantPower
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ttecp = get_unaligned_le16(buf);
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DBG("Enter:%s %d--TTEatConstantPower = %d\n",__FUNCTION__,__LINE__,ttecp);
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ret = bq27510_read(di->client,0x2a,buf,2); //CycleCount
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cc = get_unaligned_le16(buf);
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DBG("Enter:%s %d--CycleCount = %d\n",__FUNCTION__,__LINE__,cc);
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#endif
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return rsoc;
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}
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static int bq27510_battery_status(struct bq27510_device_info *di,
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union power_supply_propval *val)
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{
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u8 buf[2];
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int flags = 0;
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int status;
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int ret;
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#if defined (CONFIG_NO_BATTERY_IC)
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val->intval = POWER_SUPPLY_STATUS_FULL;
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return 0;
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#endif
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if(virtual_battery_enable == 1)
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{
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val->intval = POWER_SUPPLY_STATUS_FULL;
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return 0;
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}
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ret = bq27510_read(di->client,BQ27x00_REG_FLAGS, buf, 2);
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if (ret < 0) {
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dev_err(di->dev, "error reading flags\n");
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return ret;
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}
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flags = get_unaligned_le16(buf);
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DBG("Enter:%s %d--status = %x\n",__FUNCTION__,__LINE__,flags);
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if (flags & BQ27500_FLAG_FC)
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status = POWER_SUPPLY_STATUS_FULL;
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else if (flags & BQ27500_FLAG_DSC)
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status = POWER_SUPPLY_STATUS_DISCHARGING;
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else
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status = POWER_SUPPLY_STATUS_CHARGING;
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val->intval = status;
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return 0;
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}
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static int bq27510_health_status(struct bq27510_device_info *di,
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union power_supply_propval *val)
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{
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u8 buf[2];
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int flags = 0;
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int status;
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int ret;
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#if defined (CONFIG_NO_BATTERY_IC)
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val->intval = POWER_SUPPLY_HEALTH_GOOD;
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return 0;
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#endif
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if(virtual_battery_enable == 1)
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{
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val->intval = POWER_SUPPLY_HEALTH_GOOD;
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return 0;
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}
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ret = bq27510_read(di->client,BQ27x00_REG_FLAGS, buf, 2);
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if (ret < 0) {
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dev_err(di->dev, "error reading flags\n");
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return ret;
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}
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flags = get_unaligned_le16(buf);
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DBG("Enter:%s %d--status = %x\n",__FUNCTION__,__LINE__,flags);
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if ((flags & BQ27500_FLAG_OTD)||(flags & BQ27500_FLAG_OTC))
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status = POWER_SUPPLY_HEALTH_OVERHEAT;
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else
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status = POWER_SUPPLY_HEALTH_GOOD;
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val->intval = status;
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return 0;
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}
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/*
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* Read a time register.
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* Return < 0 if something fails.
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*/
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static int bq27510_battery_time(struct bq27510_device_info *di, int reg,
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union power_supply_propval *val)
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{
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u8 buf[2];
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int tval = 0;
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int ret;
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ret = bq27510_read(di->client,reg,buf,2);
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if (ret<0) {
|
||||
dev_err(di->dev, "error reading register %02x\n", reg);
|
||||
return ret;
|
||||
}
|
||||
tval = get_unaligned_le16(buf);
|
||||
DBG("Enter:%s %d--tval=%d\n",__FUNCTION__,__LINE__,tval);
|
||||
if (tval == 65535)
|
||||
return -ENODATA;
|
||||
|
||||
val->intval = tval * 60;
|
||||
DBG("Enter:%s %d val->intval = %d\n",__FUNCTION__,__LINE__,val->intval);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define to_bq27510_device_info(x) container_of((x), \
|
||||
struct bq27510_device_info, bat);
|
||||
|
||||
static int bq27510_battery_get_property(struct power_supply *psy,
|
||||
enum power_supply_property psp,
|
||||
union power_supply_propval *val)
|
||||
{
|
||||
int ret = 0;
|
||||
struct bq27510_device_info *di = to_bq27510_device_info(psy);
|
||||
DBG("Enter:%s %d psp= %d\n",__FUNCTION__,__LINE__,psp);
|
||||
|
||||
switch (psp) {
|
||||
|
||||
case POWER_SUPPLY_PROP_STATUS:
|
||||
ret = bq27510_battery_status(di, val);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
||||
case POWER_SUPPLY_PROP_PRESENT:
|
||||
val->intval = bq27510_battery_voltage(di);
|
||||
if (psp == POWER_SUPPLY_PROP_PRESENT)
|
||||
val->intval = val->intval <= 0 ? 0 : 1;
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_CURRENT_NOW:
|
||||
val->intval = bq27510_battery_current(di);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_CAPACITY:
|
||||
val->intval = bq27510_battery_rsoc(di);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_TEMP:
|
||||
val->intval = bq27510_battery_temperature(di);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_TECHNOLOGY:
|
||||
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_HEALTH:
|
||||
ret = bq27510_health_status(di, val);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
|
||||
ret = bq27510_battery_time(di, BQ27x00_REG_TTE, val);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
|
||||
ret = bq27510_battery_time(di, BQ27x00_REG_TTECP, val);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
|
||||
ret = bq27510_battery_time(di, BQ27x00_REG_TTF, val);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rk29_ac_get_property(struct power_supply *psy,
|
||||
enum power_supply_property psp,
|
||||
union power_supply_propval *val)
|
||||
{
|
||||
int ret = 0;
|
||||
struct bq27510_device_info *di = container_of(psy, struct bq27510_device_info, ac);
|
||||
|
||||
switch (psp) {
|
||||
case POWER_SUPPLY_PROP_ONLINE:
|
||||
if (psy->type == POWER_SUPPLY_TYPE_MAINS){
|
||||
if(gpio_get_value(di->dc_check_pin))
|
||||
val->intval = 0; /*discharging*/
|
||||
else
|
||||
val->intval = 1; /*charging*/
|
||||
}
|
||||
DBG("%s:%d val->intval = %d\n",__FUNCTION__,__LINE__,val->intval);
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void bq27510_powersupply_init(struct bq27510_device_info *di)
|
||||
{
|
||||
di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
|
||||
di->bat.properties = bq27510_battery_props;
|
||||
di->bat.num_properties = ARRAY_SIZE(bq27510_battery_props);
|
||||
di->bat.get_property = bq27510_battery_get_property;
|
||||
|
||||
di->ac.name = "ac";
|
||||
di->ac.type = POWER_SUPPLY_TYPE_MAINS;
|
||||
di->ac.properties = rk29_ac_props;
|
||||
di->ac.num_properties = ARRAY_SIZE(rk29_ac_props);
|
||||
di->ac.get_property = rk29_ac_get_property;
|
||||
}
|
||||
|
||||
|
||||
static void bq27510_battery_update_status(struct bq27510_device_info *di)
|
||||
{
|
||||
power_supply_changed(&di->bat);
|
||||
}
|
||||
|
||||
static void bq27510_battery_work(struct work_struct *work)
|
||||
{
|
||||
struct bq27510_device_info *di = container_of(work, struct bq27510_device_info, work.work);
|
||||
bq27510_battery_update_status(di);
|
||||
/* reschedule for the next time */
|
||||
schedule_delayed_work(&di->work, di->interval);
|
||||
}
|
||||
|
||||
static void bq27510_set(void)
|
||||
{
|
||||
struct bq27510_device_info *di;
|
||||
int i = 0;
|
||||
u8 buf[2];
|
||||
|
||||
di = bq27510_di;
|
||||
printk("enter 0x41\n");
|
||||
buf[0] = 0x41;
|
||||
buf[1] = 0x00;
|
||||
bq27510_write(di->client,0x00,buf,2);
|
||||
|
||||
msleep(1500);
|
||||
|
||||
printk("enter 0x21\n");
|
||||
buf[0] = 0x21;
|
||||
buf[1] = 0x00;
|
||||
bq27510_write(di->client,0x00,buf,2);
|
||||
|
||||
buf[0] = 0;
|
||||
buf[1] = 0;
|
||||
bq27510_read(di->client,0x00,buf,2);
|
||||
|
||||
// printk("%s: Enter:BUF[0]= 0X%x BUF[1] = 0X%x\n",__FUNCTION__,buf[0],buf[1]);
|
||||
|
||||
while((buf[0] & 0x04)&&(i<5))
|
||||
{
|
||||
printk("enter more 0x21 times i = %d\n",i);
|
||||
mdelay(1000);
|
||||
buf[0] = 0x21;
|
||||
buf[1] = 0x00;
|
||||
bq27510_write(di->client,0x00,buf,2);
|
||||
|
||||
buf[0] = 0;
|
||||
buf[1] = 0;
|
||||
bq27510_read(di->client,0x00,buf,2);
|
||||
i++;
|
||||
}
|
||||
|
||||
if(i>5)
|
||||
printk("write 0x21 error\n");
|
||||
else
|
||||
printk("bq27510 write 0x21 success\n");
|
||||
}
|
||||
|
||||
static int bq27510_battery_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct bq27510_device_info *di;
|
||||
int retval = 0;
|
||||
struct bq27510_platform_data *pdata;
|
||||
|
||||
pdata = client->dev.platform_data;
|
||||
|
||||
di = kzalloc(sizeof(*di), GFP_KERNEL);
|
||||
if (!di) {
|
||||
dev_err(&client->dev, "failed to allocate device info data\n");
|
||||
retval = -ENOMEM;
|
||||
goto batt_failed_2;
|
||||
}
|
||||
i2c_set_clientdata(client, di);
|
||||
di->dev = &client->dev;
|
||||
di->bat.name = "bq27510-battery";
|
||||
di->client = client;
|
||||
/* 4 seconds between monotor runs interval */
|
||||
di->interval = msecs_to_jiffies(4 * 1000);
|
||||
|
||||
di->bat_num = pdata->bat_num;
|
||||
di->dc_check_pin = pdata->dc_check_pin;
|
||||
|
||||
if (pdata->init_dc_check_pin)
|
||||
pdata->init_dc_check_pin( );
|
||||
|
||||
bq27510_powersupply_init(di);
|
||||
|
||||
retval = power_supply_register(&client->dev, &di->bat);
|
||||
if (retval) {
|
||||
dev_err(&client->dev, "failed to register battery\n");
|
||||
goto batt_failed_4;
|
||||
}
|
||||
bq27510_di = di;
|
||||
retval = power_supply_register(&client->dev, &di->ac);
|
||||
if (retval) {
|
||||
dev_err(&client->dev, "failed to register ac\n");
|
||||
goto batt_failed_4;
|
||||
}
|
||||
INIT_DELAYED_WORK(&di->work, bq27510_battery_work);
|
||||
schedule_delayed_work(&di->work, di->interval);
|
||||
dev_info(&client->dev, "support ver. %s enabled\n", DRIVER_VERSION);
|
||||
return 0;
|
||||
|
||||
batt_failed_4:
|
||||
kfree(di);
|
||||
batt_failed_2:
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int bq27510_battery_remove(struct i2c_client *client)
|
||||
{
|
||||
struct bq27510_device_info *di = i2c_get_clientdata(client);
|
||||
|
||||
power_supply_unregister(&di->bat);
|
||||
kfree(di->bat.name);
|
||||
kfree(di);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id bq27510_id[] = {
|
||||
{ "bq27510", 0 },
|
||||
};
|
||||
|
||||
static struct i2c_driver bq27510_battery_driver = {
|
||||
.driver = {
|
||||
.name = "bq27510",
|
||||
},
|
||||
.probe = bq27510_battery_probe,
|
||||
.remove = bq27510_battery_remove,
|
||||
.id_table = bq27510_id,
|
||||
};
|
||||
|
||||
static int __init bq27510_battery_init(void)
|
||||
{
|
||||
int ret;
|
||||
struct proc_dir_entry * battery_proc_entry;
|
||||
|
||||
ret = i2c_add_driver(&bq27510_battery_driver);
|
||||
if (ret)
|
||||
printk(KERN_ERR "Unable to register BQ27510 driver\n");
|
||||
|
||||
battery_proc_entry = proc_create("driver/power",0777,NULL,&battery_proc_fops);
|
||||
return ret;
|
||||
}
|
||||
module_init(bq27510_battery_init);
|
||||
|
||||
static void __exit bq27510_battery_exit(void)
|
||||
{
|
||||
i2c_del_driver(&bq27510_battery_driver);
|
||||
}
|
||||
module_exit(bq27510_battery_exit);
|
||||
|
||||
MODULE_AUTHOR("Rockchip");
|
||||
MODULE_DESCRIPTION("BQ27510 battery monitor driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Reference in New Issue
Block a user