From 8cf48bcc5ae3dde9c8659d3f1141ccace1532254 Mon Sep 17 00:00:00 2001 From: clb Date: Fri, 29 Jul 2011 16:46:02 +0800 Subject: [PATCH] add bq27541 --- arch/arm/configs/rk29_newton_defconfig | 32 +- arch/arm/mach-rk29/include/mach/board.h | 6 + drivers/power/Kconfig | 6 + drivers/power/Makefile | 3 +- drivers/power/bq27541_battery.c | 687 ++++++++++++++++++++++++ 5 files changed, 710 insertions(+), 24 deletions(-) mode change 100755 => 100644 drivers/power/Kconfig mode change 100755 => 100644 drivers/power/Makefile create mode 100755 drivers/power/bq27541_battery.c diff --git a/arch/arm/configs/rk29_newton_defconfig b/arch/arm/configs/rk29_newton_defconfig index 282bc8397431..6e68a11d05a5 100755 --- a/arch/arm/configs/rk29_newton_defconfig +++ b/arch/arm/configs/rk29_newton_defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit # Linux kernel version: 2.6.32.27 -# Wed Jul 27 17:48:19 2011 +# Fri Jul 29 16:43:33 2011 # CONFIG_ARM=y CONFIG_SYS_SUPPORTS_APM_EMULATION=y @@ -199,9 +199,7 @@ CONFIG_MMU=y # CONFIG_ARCH_DAVINCI is not set # CONFIG_ARCH_OMAP is not set # CONFIG_ARCH_BCMRING is not set -# CONFIG_ARCH_RK2818 is not set CONFIG_ARCH_RK29=y -CONFIG_WIFI_CONTROL_FUNC=y # CONFIG_MACH_RK29SDK is not set # CONFIG_MACH_RK29SDK_DDR3 is not set # CONFIG_MACH_RK29WINACCORD is not set @@ -237,6 +235,8 @@ CONFIG_MACH_RK29_newton=y CONFIG_DDR_TYPE_DDR3_DEFAULT=y CONFIG_RK29_MEM_SIZE_M=512 CONFIG_DDR_SDRAM_FREQ=456 +# CONFIG_DDR_RECONFIG is not set +CONFIG_WIFI_CONTROL_FUNC=y # # RK29 VPU (Video Processing Unit) support @@ -969,7 +969,7 @@ CONFIG_UART2_RK29=y CONFIG_UART2_CTS_RTS_RK29=y # CONFIG_UART2_DMA_RK29 is not set CONFIG_UART3_RK29=y -CONFIG_UART3_CTS_RTS_RK29=y +# CONFIG_UART3_CTS_RTS_RK29 is not set # CONFIG_UART3_DMA_RK29 is not set CONFIG_SERIAL_RK29_CONSOLE=y CONFIG_UNIX98_PTYS=y @@ -1004,6 +1004,9 @@ CONFIG_RK29_I2C1_CONTROLLER=y CONFIG_I2C2_RK29=y CONFIG_RK29_I2C2_CONTROLLER=y # CONFIG_RK29_I2C2_GPIO is not set +CONFIG_I2C3_RK29=y +CONFIG_RK29_I2C3_CONTROLLER=y +# CONFIG_RK29_I2C3_GPIO is not set CONFIG_I2C_DEV_RK29=y # @@ -1020,7 +1023,6 @@ CONFIG_I2C_DEV_RK29=y CONFIG_ADC=y # CONFIG_ADC_RK28 is not set CONFIG_ADC_RK29=y -# CONFIG_SPI_FPGA is not set # # Headset device support @@ -1074,10 +1076,9 @@ CONFIG_POWER_SUPPLY=y # CONFIG_BATTERY_BQ27x00 is not set # CONFIG_BATTERY_MAX17040 is not set # CONFIG_BATTERY_STC3100 is not set -CONFIG_BATTERY_BQ27510=y +# CONFIG_BATTERY_BQ27510 is not set +CONFIG_BATTERY_BQ27541=y # CONFIG_BATTERY_BQ3060 is not set -# CONFIG_CHECK_BATT_CAPACITY is not set -CONFIG_NO_BATTERY_IC=y # CONFIG_HWMON is not set # CONFIG_THERMAL is not set # CONFIG_WATCHDOG is not set @@ -1818,21 +1819,6 @@ CONFIG_ANDROID_LOW_MEMORY_KILLER=y # CONFIG_RAR_REGISTER is not set # CONFIG_IIO is not set -# -# DSP -# -# CONFIG_RK2818_DSP is not set - -# -# RK1000 control -# -# CONFIG_RK1000_CONTROL is not set - -# -# rk2818 POWER CONTROL -# -# CONFIG_RK2818_POWER is not set - # # GPU Vivante # diff --git a/arch/arm/mach-rk29/include/mach/board.h b/arch/arm/mach-rk29/include/mach/board.h index 2e3dcfdc6230..8db0d363584b 100755 --- a/arch/arm/mach-rk29/include/mach/board.h +++ b/arch/arm/mach-rk29/include/mach/board.h @@ -156,6 +156,12 @@ struct bq27510_platform_data { unsigned int bat_num; }; +struct bq27541_platform_data { + int (*init_dc_check_pin)(void); + unsigned int dc_check_pin; + unsigned int bat_num; +}; + /*i2s*/ struct rk29_i2s_platform_data { int (*io_init)(void); diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig old mode 100755 new mode 100644 index 2717e933c221..63116854b652 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -142,6 +142,12 @@ config BATTERY_BQ27510 depends on I2C && ARCH_RK29 help Say Y here to enable support for batteries with BQ27510(I2C) chip. +config BATTERY_BQ27541 + tristate "BQ27541 battery driver" + select I2C_DEV_RK29 + depends on I2C && ARCH_RK29 + help + Say Y here to enable support for batteries with BQ27541(I2C) chip. config BATTERY_BQ3060 tristate "BQ3060 battery driver" diff --git a/drivers/power/Makefile b/drivers/power/Makefile old mode 100755 new mode 100644 index bd027a37cedf..4e8b1a59a99f --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -33,4 +33,5 @@ obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o obj-$(CONFIG_BATTERY_STC3100) += stc3100_battery.o obj-$(CONFIG_BATTERY_BQ27510) += bq27510_battery.o -obj-$(CONFIG_BATTERY_BQ3060) += bq3060_battery.o +obj-$(CONFIG_BATTERY_BQ27541) += bq27541_battery.o +obj-$(CONFIG_BATTERY_BQ3060) += bq3060_battery.o diff --git a/drivers/power/bq27541_battery.c b/drivers/power/bq27541_battery.c new file mode 100755 index 000000000000..126416c22f9c --- /dev/null +++ b/drivers/power/bq27541_battery.c @@ -0,0 +1,687 @@ +/* + * BQ27510 battery driver + * + * This package is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#define DRIVER_VERSION "1.1.0" +#define BQ27x00_REG_TEMP 0x06 +#define BQ27x00_REG_VOLT 0x08 +#define BQ27x00_REG_AI 0x14 +#define BQ27x00_REG_FLAGS 0x0A +#define BQ27x00_REG_TTE 0x16 +#define BQ27x00_REG_TTF 0x18 +#define BQ27x00_REG_TTECP 0x26 +#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */ +#define BQ27500_REG_SOC 0x2c + +#define BQ27500_FLAG_DSC BIT(0) +#define BQ27000_FLAG_CHGS BIT(8) +#define BQ27500_FLAG_FC BIT(9) +#define BQ27500_FLAG_OTD BIT(14) +#define BQ27500_FLAG_OTC BIT(15) + +#define BQ27510_SPEED 100 * 1000 +int virtual_battery_enable = 0; +extern int dwc_vbus_status(void); +static void bq27541_set(void); + +#if 0 +#define DBG(x...) printk(KERN_INFO x) +#else +#define DBG(x...) do { } while (0) +#endif + +/* If the system has several batteries we need a different name for each + * of them... + */ +static DEFINE_MUTEX(battery_mutex); + +struct bq27541_device_info { + struct device *dev; + struct power_supply bat; + struct power_supply ac; + struct delayed_work work; + struct i2c_client *client; + unsigned int interval; + unsigned int dc_check_pin; + unsigned int bat_num; +}; + +static struct bq27541_device_info *bq27541_di; +static enum power_supply_property bq27541_battery_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_HEALTH, + //POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, + //POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, + //POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, +}; + +static enum power_supply_property rk29_ac_props[] = { + POWER_SUPPLY_PROP_ONLINE, +}; + +static ssize_t battery_proc_write(struct file *file,const char __user *buffer, + unsigned long count,void *data) +{ + char c; + int rc; + printk("USER:\n"); + printk("echo x >/proc/driver/power\n"); + printk("x=1,means just print log ||x=2,means log and data ||x= other,means close log\n"); + + rc = get_user(c,buffer); + if(rc) + return rc; + if(c == '1') + virtual_battery_enable = 1; + else if(c == '2') + virtual_battery_enable = 2; + else if(c == '3') + virtual_battery_enable = 3; + else if(c == '9'){ + printk("%s:%d>>bq27541 set\n",__FUNCTION__,__LINE__); + bq27541_set(); + } + else + virtual_battery_enable = 0; + printk("%s,count(%d),virtual_battery_enable(%d)\n",__FUNCTION__,(int)count,virtual_battery_enable); + return count; +} + +static const struct file_operations battery_proc_fops = { + .owner = THIS_MODULE, + .write = battery_proc_write, +}; + +/* + * Common code for BQ27510 devices read + */ +static int bq27541_read(struct i2c_client *client, u8 reg, u8 buf[], unsigned len) +{ + int ret; + ret = i2c_master_reg8_recv(client, reg, buf, len, BQ27510_SPEED); + return ret; +} + +static int bq27541_write(struct i2c_client *client, u8 reg, u8 const buf[], unsigned len) +{ + int ret; + ret = i2c_master_reg8_send(client, reg, buf, (int)len, BQ27510_SPEED); + return ret; +} + +/* + * Return the battery temperature in tenths of degree Celsius + * Or < 0 if something fails. + */ +static int bq27541_battery_temperature(struct bq27541_device_info *di) +{ + int ret; + int temp = 0; + u8 buf[2] ={0}; + + #if defined (CONFIG_NO_BATTERY_IC) + return 258; + #endif + + if(virtual_battery_enable == 1) + return 125/*258*/; + ret = bq27541_read(di->client,BQ27x00_REG_TEMP,buf,2); + if (ret<0) { + dev_err(di->dev, "error reading temperature\n"); + return ret; + } + temp = get_unaligned_le16(buf); + temp = temp - 2731; //K + DBG("Enter:%s %d--temp = %d\n",__FUNCTION__,__LINE__,temp); + return temp; +} + +/* + * Return the battery Voltage in milivolts + * Or < 0 if something fails. + */ +static int bq27541_battery_voltage(struct bq27541_device_info *di) +{ + int ret; + u8 buf[2] = {0}; + int volt = 0; + + #if defined (CONFIG_NO_BATTERY_IC) + return 4000000; + #endif + if(virtual_battery_enable == 1) + return 2000000/*4000000*/; + + ret = bq27541_read(di->client,BQ27x00_REG_VOLT,buf,2); + if (ret<0) { + dev_err(di->dev, "error reading voltage\n"); + return ret; + } + volt = get_unaligned_le16(buf); + + //bp27510 can only measure one li-lion bat + if(di->bat_num == 2){ + volt = volt * 1000 * 2; + }else{ + volt = volt * 1000; + } + + DBG("Enter:%s %d--volt = %d\n",__FUNCTION__,__LINE__,volt); + return volt; +} + +/* + * Return the battery average current + * Note that current can be negative signed as well + * Or 0 if something fails. + */ +static int bq27541_battery_current(struct bq27541_device_info *di) +{ + int ret; + int curr = 0; + u8 buf[2] = {0}; + + #if defined (CONFIG_NO_BATTERY_IC) + return 22000; + #endif + if(virtual_battery_enable == 1) + return 11000/*22000*/; + ret = bq27541_read(di->client,BQ27x00_REG_AI,buf,2); + if (ret<0) { + dev_err(di->dev, "error reading current\n"); + return 0; + } + + curr = get_unaligned_le16(buf); + DBG("curr = %x \n",curr); + if(curr>0x8000){ + curr = 0xFFFF^(curr-1); + } + curr = curr * 1000; + DBG("Enter:%s %d--curr = %d\n",__FUNCTION__,__LINE__,curr); + return curr; +} + +/* + * Return the battery Relative State-of-Charge + * Or < 0 if something fails. + */ +static int bq27541_battery_rsoc(struct bq27541_device_info *di) +{ + int ret; + int rsoc = 0; + #if 0 + int nvcap = 0,facap = 0,remcap=0,fccap=0,full=0,cnt=0; + int art = 0, artte = 0, ai = 0, tte = 0, ttf = 0, si = 0; + int stte = 0, mli = 0, mltte = 0, ae = 0, ap = 0, ttecp = 0, cc = 0; + #endif + u8 buf[2]; + + #if defined (CONFIG_NO_BATTERY_IC) + return 100; + #endif + if(virtual_battery_enable == 1) + return 50/*100*/; + + ret = bq27541_read(di->client,BQ27500_REG_SOC,buf,2); + if (ret<0) { + dev_err(di->dev, "error reading relative State-of-Charge\n"); + return ret; + } + rsoc = get_unaligned_le16(buf); + DBG("Enter:%s %d--rsoc = %d\n",__FUNCTION__,__LINE__,rsoc); + + #if defined (CONFIG_NO_BATTERY_IC) + rsoc = 100; + #endif + #if 0 //other register information, for debug use + ret = bq27541_read(di->client,0x0c,buf,2); //NominalAvailableCapacity + nvcap = get_unaligned_le16(buf); + DBG("\nEnter:%s %d--nvcap = %d\n",__FUNCTION__,__LINE__,nvcap); + ret = bq27541_read(di->client,0x0e,buf,2); //FullAvailableCapacity + facap = get_unaligned_le16(buf); + DBG("Enter:%s %d--facap = %d\n",__FUNCTION__,__LINE__,facap); + ret = bq27541_read(di->client,0x10,buf,2); //RemainingCapacity + remcap = get_unaligned_le16(buf); + DBG("Enter:%s %d--remcap = %d\n",__FUNCTION__,__LINE__,remcap); + ret = bq27541_read(di->client,0x12,buf,2); //FullChargeCapacity + fccap = get_unaligned_le16(buf); + DBG("Enter:%s %d--fccap = %d\n",__FUNCTION__,__LINE__,fccap); + ret = bq27541_read(di->client,0x3c,buf,2); //DesignCapacity + full = get_unaligned_le16(buf); + DBG("Enter:%s %d--DesignCapacity = %d\n",__FUNCTION__,__LINE__,full); + + buf[0] = 0x00; //CONTROL_STATUS + buf[1] = 0x00; + bq27541_write(di->client,0x00,buf,2); + ret = bq27541_read(di->client,0x00,buf,2); + cnt = get_unaligned_le16(buf); + DBG("Enter:%s %d--Control status = %x\n",__FUNCTION__,__LINE__,cnt); + + ret = bq27541_read(di->client,0x02,buf,2); //AtRate + art = get_unaligned_le16(buf); + DBG("Enter:%s %d--AtRate = %d\n",__FUNCTION__,__LINE__,art); + ret = bq27541_read(di->client,0x04,buf,2); //AtRateTimeToEmpty + artte = get_unaligned_le16(buf); + DBG("Enter:%s %d--AtRateTimeToEmpty = %d\n",__FUNCTION__,__LINE__,artte); + ret = bq27541_read(di->client,0x14,buf,2); //AverageCurrent + ai = get_unaligned_le16(buf); + DBG("Enter:%s %d--AverageCurrent = %d\n",__FUNCTION__,__LINE__,ai); + ret = bq27541_read(di->client,0x16,buf,2); //TimeToEmpty + tte = get_unaligned_le16(buf); + DBG("Enter:%s %d--TimeToEmpty = %d\n",__FUNCTION__,__LINE__,tte); + ret = bq27541_read(di->client,0x18,buf,2); //TimeToFull + ttf = get_unaligned_le16(buf); + DBG("Enter:%s %d--TimeToFull = %d\n",__FUNCTION__,__LINE__,ttf); + ret = bq27541_read(di->client,0x1a,buf,2); //StandbyCurrent + si = get_unaligned_le16(buf); + DBG("Enter:%s %d--StandbyCurrent = %d\n",__FUNCTION__,__LINE__,si); + ret = bq27541_read(di->client,0x1c,buf,2); //StandbyTimeToEmpty + stte = get_unaligned_le16(buf); + DBG("Enter:%s %d--StandbyTimeToEmpty = %d\n",__FUNCTION__,__LINE__,stte); + ret = bq27541_read(di->client,0x1e,buf,2); //MaxLoadCurrent + mli = get_unaligned_le16(buf); + DBG("Enter:%s %d--MaxLoadCurrent = %d\n",__FUNCTION__,__LINE__,mli); + ret = bq27541_read(di->client,0x20,buf,2); //MaxLoadTimeToEmpty + mltte = get_unaligned_le16(buf); + DBG("Enter:%s %d--MaxLoadTimeToEmpty = %d\n",__FUNCTION__,__LINE__,mltte); + ret = bq27541_read(di->client,0x22,buf,2); //AvailableEnergy + ae = get_unaligned_le16(buf); + DBG("Enter:%s %d--AvailableEnergy = %d\n",__FUNCTION__,__LINE__,ae); + ret = bq27541_read(di->client,0x24,buf,2); //AveragePower + ap = get_unaligned_le16(buf); + DBG("Enter:%s %d--AveragePower = %d\n",__FUNCTION__,__LINE__,ap); + ret = bq27541_read(di->client,0x26,buf,2); //TTEatConstantPower + ttecp = get_unaligned_le16(buf); + DBG("Enter:%s %d--TTEatConstantPower = %d\n",__FUNCTION__,__LINE__,ttecp); + ret = bq27541_read(di->client,0x2a,buf,2); //CycleCount + cc = get_unaligned_le16(buf); + DBG("Enter:%s %d--CycleCount = %d\n",__FUNCTION__,__LINE__,cc); + #endif + return rsoc; +} + +static int bq27541_battery_status(struct bq27541_device_info *di, + union power_supply_propval *val) +{ + u8 buf[2] = {0}; + int flags = 0; + int status = 0; + int ret = 0; + + #if defined (CONFIG_NO_BATTERY_IC) + val->intval = POWER_SUPPLY_STATUS_FULL; + return 0; + #endif + + if(virtual_battery_enable == 1) + { + val->intval = POWER_SUPPLY_STATUS_FULL; + return 0; + } + ret = bq27541_read(di->client,BQ27x00_REG_FLAGS, buf, 2); + if (ret < 0) { + dev_err(di->dev, "error reading flags\n"); + return ret; + } + flags = get_unaligned_le16(buf); + DBG("Enter:%s %d--status = %x\n",__FUNCTION__,__LINE__,flags); + if (flags & BQ27500_FLAG_FC) + status = POWER_SUPPLY_STATUS_FULL; + else if (flags & BQ27500_FLAG_DSC) + status = POWER_SUPPLY_STATUS_DISCHARGING; + else + status = POWER_SUPPLY_STATUS_CHARGING; + + val->intval = status; + return 0; +} + +static int bq27541_health_status(struct bq27541_device_info *di, + union power_supply_propval *val) +{ + u8 buf[2] = {0}; + int flags = 0; + int status; + int ret; + + #if defined (CONFIG_NO_BATTERY_IC) + val->intval = POWER_SUPPLY_HEALTH_GOOD; + return 0; + #endif + + if(virtual_battery_enable == 1) + { + val->intval = POWER_SUPPLY_HEALTH_GOOD; + return 0; + } + ret = bq27541_read(di->client,BQ27x00_REG_FLAGS, buf, 2); + if (ret < 0) { + dev_err(di->dev, "error reading flags\n"); + return ret; + } + flags = get_unaligned_le16(buf); + DBG("Enter:%s %d--status = %x\n",__FUNCTION__,__LINE__,flags); + + if ((flags & BQ27500_FLAG_OTD)||(flags & BQ27500_FLAG_OTC)) + status = POWER_SUPPLY_HEALTH_OVERHEAT; + else + status = POWER_SUPPLY_HEALTH_GOOD; + + + + val->intval = status; + return 0; +} + + +/* + * Read a time register. + * Return < 0 if something fails. + */ +static int bq27541_battery_time(struct bq27541_device_info *di, int reg, + union power_supply_propval *val) +{ + u8 buf[2] = {0}; + int tval = 0; + int ret; + + ret = bq27541_read(di->client,reg,buf,2); + 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_bq27541_device_info(x) container_of((x), \ + struct bq27541_device_info, bat); + +static int bq27541_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + int ret = 0; + struct bq27541_device_info *di = to_bq27541_device_info(psy); + DBG("Enter:%s %d psp= %d\n",__FUNCTION__,__LINE__,psp); + + switch (psp) { + + case POWER_SUPPLY_PROP_STATUS: + ret = bq27541_battery_status(di, val); + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + case POWER_SUPPLY_PROP_PRESENT: + val->intval = bq27541_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 = bq27541_battery_current(di); + break; + case POWER_SUPPLY_PROP_CAPACITY: + val->intval = bq27541_battery_rsoc(di); + break; + + case POWER_SUPPLY_PROP_TEMP: + val->intval = bq27541_battery_temperature(di); + break; + + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = POWER_SUPPLY_TECHNOLOGY_LION; + break; + case POWER_SUPPLY_PROP_HEALTH: + ret = bq27541_health_status(di, val); + break; + case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: + ret = bq27541_battery_time(di, BQ27x00_REG_TTE, val); + break; + case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: + ret = bq27541_battery_time(di, BQ27x00_REG_TTECP, val); + break; + case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: + ret = bq27541_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 bq27541_device_info *di = container_of(psy, struct bq27541_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 bq27541_powersupply_init(struct bq27541_device_info *di) +{ + di->bat.type = POWER_SUPPLY_TYPE_BATTERY; + di->bat.properties = bq27541_battery_props; + di->bat.num_properties = ARRAY_SIZE(bq27541_battery_props); + di->bat.get_property = bq27541_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 bq27541_battery_update_status(struct bq27541_device_info *di) +{ + power_supply_changed(&di->bat); +} + +static void bq27541_battery_work(struct work_struct *work) +{ + struct bq27541_device_info *di = container_of(work, struct bq27541_device_info, work.work); + bq27541_battery_update_status(di); + /* reschedule for the next time */ + schedule_delayed_work(&di->work, di->interval); +} + +static void bq27541_set(void) +{ + struct bq27541_device_info *di; + int i = 0; + u8 buf[2]; + + di = bq27541_di; + printk("enter 0x41\n"); + buf[0] = 0x41; + buf[1] = 0x00; + bq27541_write(di->client,0x00,buf,2); + + msleep(1500); + + printk("enter 0x21\n"); + buf[0] = 0x21; + buf[1] = 0x00; + bq27541_write(di->client,0x00,buf,2); + + buf[0] = 0; + buf[1] = 0; + bq27541_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; + bq27541_write(di->client,0x00,buf,2); + + buf[0] = 0; + buf[1] = 0; + bq27541_read(di->client,0x00,buf,2); + i++; + } + + if(i>5) + printk("write 0x21 error\n"); + else + printk("bq27541 write 0x21 success\n"); +} + +static int bq27541_battery_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct bq27541_device_info *di; + int retval = 0; + struct bq27541_platform_data *pdata; + + DBG("********** bq27541_battery_probe************** "); + 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 = "bq27541-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( ); + + bq27541_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; + } + bq27541_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, bq27541_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 bq27541_battery_remove(struct i2c_client *client) +{ + struct bq27541_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 bq27541_id[] = { + { "bq27541", 0 }, +}; + +static struct i2c_driver bq27541_battery_driver = { + .driver = { + .name = "bq27541", + }, + .probe = bq27541_battery_probe, + .remove = bq27541_battery_remove, + .id_table = bq27541_id, +}; + +static int __init bq27541_battery_init(void) +{ + int ret; + struct proc_dir_entry * battery_proc_entry; + + ret = i2c_add_driver(&bq27541_battery_driver); + if (ret) + printk(KERN_ERR "Unable to register BQ27541 driver\n"); + + battery_proc_entry = proc_create("driver/power",0777,NULL,&battery_proc_fops); + return ret; +} +module_init(bq27541_battery_init); + +static void __exit bq27541_battery_exit(void) +{ + i2c_del_driver(&bq27541_battery_driver); +} +module_exit(bq27541_battery_exit); + +MODULE_AUTHOR("clb"); +MODULE_DESCRIPTION("BQ27541 battery monitor driver"); +MODULE_LICENSE("GPL"); -- 2.34.1