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ab8500-charger: AB8500 charger driver
This driver is responsible for detecting the ac/usb plugin and also includes function to enable ac/usb charging and re-kick the watchdog. It registers with the power supply class and provides information to the user space. The information include status of ac/usb charger device. This information in turn will be used by the abx500 charging algorithm driver to enable/disable and monitor charging. Signed-off-by: Arun Murthy <arun.murthy@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Arun Murthy
Anton Vorontsov
parent
1668f81159
commit
84edbeeab6
2789
drivers/power/ab8500_charger.c
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2789
drivers/power/ab8500_charger.c
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File diff suppressed because it is too large
Load Diff
554
include/linux/mfd/abx500/ab8500-bm.h
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554
include/linux/mfd/abx500/ab8500-bm.h
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@ -0,0 +1,554 @@
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/*
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* Copyright ST-Ericsson 2012.
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*
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* Author: Arun Murthy <arun.murthy@stericsson.com>
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* Licensed under GPLv2.
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*/
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#ifndef _AB8500_BM_H
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#define _AB8500_BM_H
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#include <linux/kernel.h>
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/*
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* System control 2 register offsets.
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* bank = 0x02
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*/
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#define AB8500_MAIN_WDOG_CTRL_REG 0x01
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#define AB8500_LOW_BAT_REG 0x03
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#define AB8500_BATT_OK_REG 0x04
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/*
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* USB/ULPI register offsets
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* Bank : 0x5
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*/
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#define AB8500_USB_LINE_STAT_REG 0x80
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/*
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* Charger / status register offfsets
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* Bank : 0x0B
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*/
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#define AB8500_CH_STATUS1_REG 0x00
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#define AB8500_CH_STATUS2_REG 0x01
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#define AB8500_CH_USBCH_STAT1_REG 0x02
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#define AB8500_CH_USBCH_STAT2_REG 0x03
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#define AB8500_CH_FSM_STAT_REG 0x04
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#define AB8500_CH_STAT_REG 0x05
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/*
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* Charger / control register offfsets
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* Bank : 0x0B
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*/
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#define AB8500_CH_VOLT_LVL_REG 0x40
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#define AB8500_CH_VOLT_LVL_MAX_REG 0x41 /*Only in Cut2.0*/
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#define AB8500_CH_OPT_CRNTLVL_REG 0x42
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#define AB8500_CH_OPT_CRNTLVL_MAX_REG 0x43 /*Only in Cut2.0*/
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#define AB8500_CH_WD_TIMER_REG 0x50
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#define AB8500_CHARG_WD_CTRL 0x51
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#define AB8500_BTEMP_HIGH_TH 0x52
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#define AB8500_LED_INDICATOR_PWM_CTRL 0x53
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#define AB8500_LED_INDICATOR_PWM_DUTY 0x54
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#define AB8500_BATT_OVV 0x55
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#define AB8500_CHARGER_CTRL 0x56
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#define AB8500_BAT_CTRL_CURRENT_SOURCE 0x60 /*Only in Cut2.0*/
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/*
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* Charger / main control register offsets
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* Bank : 0x0B
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*/
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#define AB8500_MCH_CTRL1 0x80
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#define AB8500_MCH_CTRL2 0x81
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#define AB8500_MCH_IPT_CURLVL_REG 0x82
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#define AB8500_CH_WD_REG 0x83
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/*
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* Charger / USB control register offsets
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* Bank : 0x0B
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*/
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#define AB8500_USBCH_CTRL1_REG 0xC0
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#define AB8500_USBCH_CTRL2_REG 0xC1
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#define AB8500_USBCH_IPT_CRNTLVL_REG 0xC2
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/*
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* Gas Gauge register offsets
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* Bank : 0x0C
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*/
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#define AB8500_GASG_CC_CTRL_REG 0x00
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#define AB8500_GASG_CC_ACCU1_REG 0x01
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#define AB8500_GASG_CC_ACCU2_REG 0x02
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#define AB8500_GASG_CC_ACCU3_REG 0x03
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#define AB8500_GASG_CC_ACCU4_REG 0x04
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#define AB8500_GASG_CC_SMPL_CNTRL_REG 0x05
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#define AB8500_GASG_CC_SMPL_CNTRH_REG 0x06
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#define AB8500_GASG_CC_SMPL_CNVL_REG 0x07
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#define AB8500_GASG_CC_SMPL_CNVH_REG 0x08
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#define AB8500_GASG_CC_CNTR_AVGOFF_REG 0x09
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#define AB8500_GASG_CC_OFFSET_REG 0x0A
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#define AB8500_GASG_CC_NCOV_ACCU 0x10
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#define AB8500_GASG_CC_NCOV_ACCU_CTRL 0x11
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#define AB8500_GASG_CC_NCOV_ACCU_LOW 0x12
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#define AB8500_GASG_CC_NCOV_ACCU_MED 0x13
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#define AB8500_GASG_CC_NCOV_ACCU_HIGH 0x14
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/*
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* Interrupt register offsets
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* Bank : 0x0E
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*/
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#define AB8500_IT_SOURCE2_REG 0x01
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#define AB8500_IT_SOURCE21_REG 0x14
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/*
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* RTC register offsets
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* Bank: 0x0F
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*/
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#define AB8500_RTC_BACKUP_CHG_REG 0x0C
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#define AB8500_RTC_CC_CONF_REG 0x01
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#define AB8500_RTC_CTRL_REG 0x0B
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/*
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* OTP register offsets
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* Bank : 0x15
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*/
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#define AB8500_OTP_CONF_15 0x0E
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/* GPADC constants from AB8500 spec, UM0836 */
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#define ADC_RESOLUTION 1024
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#define ADC_CH_MAIN_MIN 0
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#define ADC_CH_MAIN_MAX 20030
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#define ADC_CH_VBUS_MIN 0
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#define ADC_CH_VBUS_MAX 20030
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#define ADC_CH_VBAT_MIN 2300
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#define ADC_CH_VBAT_MAX 4800
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#define ADC_CH_BKBAT_MIN 0
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#define ADC_CH_BKBAT_MAX 3200
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/* Main charge i/p current */
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#define MAIN_CH_IP_CUR_0P9A 0x80
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#define MAIN_CH_IP_CUR_1P0A 0x90
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#define MAIN_CH_IP_CUR_1P1A 0xA0
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#define MAIN_CH_IP_CUR_1P2A 0xB0
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#define MAIN_CH_IP_CUR_1P3A 0xC0
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#define MAIN_CH_IP_CUR_1P4A 0xD0
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#define MAIN_CH_IP_CUR_1P5A 0xE0
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/* ChVoltLevel */
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#define CH_VOL_LVL_3P5 0x00
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#define CH_VOL_LVL_4P0 0x14
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#define CH_VOL_LVL_4P05 0x16
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#define CH_VOL_LVL_4P1 0x1B
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#define CH_VOL_LVL_4P15 0x20
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#define CH_VOL_LVL_4P2 0x25
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#define CH_VOL_LVL_4P6 0x4D
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/* ChOutputCurrentLevel */
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#define CH_OP_CUR_LVL_0P1 0x00
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#define CH_OP_CUR_LVL_0P2 0x01
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#define CH_OP_CUR_LVL_0P3 0x02
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#define CH_OP_CUR_LVL_0P4 0x03
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#define CH_OP_CUR_LVL_0P5 0x04
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#define CH_OP_CUR_LVL_0P6 0x05
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#define CH_OP_CUR_LVL_0P7 0x06
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#define CH_OP_CUR_LVL_0P8 0x07
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#define CH_OP_CUR_LVL_0P9 0x08
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#define CH_OP_CUR_LVL_1P4 0x0D
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#define CH_OP_CUR_LVL_1P5 0x0E
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#define CH_OP_CUR_LVL_1P6 0x0F
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/* BTEMP High thermal limits */
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#define BTEMP_HIGH_TH_57_0 0x00
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#define BTEMP_HIGH_TH_52 0x01
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#define BTEMP_HIGH_TH_57_1 0x02
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#define BTEMP_HIGH_TH_62 0x03
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/* current is mA */
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#define USB_0P1A 100
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#define USB_0P2A 200
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#define USB_0P3A 300
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#define USB_0P4A 400
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#define USB_0P5A 500
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#define LOW_BAT_3P1V 0x20
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#define LOW_BAT_2P3V 0x00
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#define LOW_BAT_RESET 0x01
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#define LOW_BAT_ENABLE 0x01
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/* Backup battery constants */
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#define BUP_ICH_SEL_50UA 0x00
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#define BUP_ICH_SEL_150UA 0x04
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#define BUP_ICH_SEL_300UA 0x08
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#define BUP_ICH_SEL_700UA 0x0C
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#define BUP_VCH_SEL_2P5V 0x00
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#define BUP_VCH_SEL_2P6V 0x01
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#define BUP_VCH_SEL_2P8V 0x02
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#define BUP_VCH_SEL_3P1V 0x03
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/* Battery OVV constants */
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#define BATT_OVV_ENA 0x02
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#define BATT_OVV_TH_3P7 0x00
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#define BATT_OVV_TH_4P75 0x01
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/* A value to indicate over voltage */
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#define BATT_OVV_VALUE 4750
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/* VBUS OVV constants */
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#define VBUS_OVV_SELECT_MASK 0x78
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#define VBUS_OVV_SELECT_5P6V 0x00
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#define VBUS_OVV_SELECT_5P7V 0x08
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#define VBUS_OVV_SELECT_5P8V 0x10
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#define VBUS_OVV_SELECT_5P9V 0x18
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#define VBUS_OVV_SELECT_6P0V 0x20
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#define VBUS_OVV_SELECT_6P1V 0x28
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#define VBUS_OVV_SELECT_6P2V 0x30
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#define VBUS_OVV_SELECT_6P3V 0x38
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#define VBUS_AUTO_IN_CURR_LIM_ENA 0x04
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/* Fuel Gauge constants */
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#define RESET_ACCU 0x02
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#define READ_REQ 0x01
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#define CC_DEEP_SLEEP_ENA 0x02
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#define CC_PWR_UP_ENA 0x01
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#define CC_SAMPLES_40 0x28
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#define RD_NCONV_ACCU_REQ 0x01
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#define CC_CALIB 0x08
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#define CC_INTAVGOFFSET_ENA 0x10
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#define CC_MUXOFFSET 0x80
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#define CC_INT_CAL_N_AVG_MASK 0x60
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#define CC_INT_CAL_SAMPLES_16 0x40
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#define CC_INT_CAL_SAMPLES_8 0x20
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#define CC_INT_CAL_SAMPLES_4 0x00
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/* RTC constants */
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#define RTC_BUP_CH_ENA 0x10
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/* BatCtrl Current Source Constants */
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#define BAT_CTRL_7U_ENA 0x01
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#define BAT_CTRL_20U_ENA 0x02
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#define BAT_CTRL_CMP_ENA 0x04
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#define FORCE_BAT_CTRL_CMP_HIGH 0x08
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#define BAT_CTRL_PULL_UP_ENA 0x10
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/* Battery type */
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#define BATTERY_UNKNOWN 00
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/*
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* ADC for the battery thermistor.
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* When using the ADC_THERM_BATCTRL the battery ID resistor is combined with
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* a NTC resistor to both identify the battery and to measure its temperature.
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* Different phone manufactures uses different techniques to both identify the
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* battery and to read its temperature.
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*/
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enum adc_therm {
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ADC_THERM_BATCTRL,
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ADC_THERM_BATTEMP,
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};
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/**
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* struct res_to_temp - defines one point in a temp to res curve. To
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* be used in battery packs that combines the identification resistor with a
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* NTC resistor.
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* @temp: battery pack temperature in Celcius
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* @resist: NTC resistor net total resistance
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*/
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struct res_to_temp {
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int temp;
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int resist;
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};
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/**
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* struct batres_vs_temp - defines one point in a temp vs battery internal
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* resistance curve.
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* @temp: battery pack temperature in Celcius
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* @resist: battery internal reistance in mOhm
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*/
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struct batres_vs_temp {
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int temp;
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int resist;
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};
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/**
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* struct v_to_cap - Table for translating voltage to capacity
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* @voltage: Voltage in mV
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* @capacity: Capacity in percent
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*/
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struct v_to_cap {
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int voltage;
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int capacity;
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};
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/* Forward declaration */
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struct ab8500_fg;
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/**
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* struct ab8500_fg_parameters - Fuel gauge algorithm parameters, in seconds
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* if not specified
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* @recovery_sleep_timer: Time between measurements while recovering
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* @recovery_total_time: Total recovery time
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* @init_timer: Measurement interval during startup
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* @init_discard_time: Time we discard voltage measurement at startup
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* @init_total_time: Total init time during startup
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* @high_curr_time: Time current has to be high to go to recovery
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* @accu_charging: FG accumulation time while charging
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* @accu_high_curr: FG accumulation time in high current mode
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* @high_curr_threshold: High current threshold, in mA
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* @lowbat_threshold: Low battery threshold, in mV
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* @battok_falling_th_sel0 Threshold in mV for battOk signal sel0
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* Resolution in 50 mV step.
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* @battok_raising_th_sel1 Threshold in mV for battOk signal sel1
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* Resolution in 50 mV step.
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* @user_cap_limit Capacity reported from user must be within this
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* limit to be considered as sane, in percentage
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* points.
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* @maint_thres This is the threshold where we stop reporting
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* battery full while in maintenance, in per cent
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*/
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struct ab8500_fg_parameters {
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int recovery_sleep_timer;
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int recovery_total_time;
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int init_timer;
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int init_discard_time;
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int init_total_time;
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int high_curr_time;
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int accu_charging;
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int accu_high_curr;
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int high_curr_threshold;
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int lowbat_threshold;
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int battok_falling_th_sel0;
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int battok_raising_th_sel1;
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int user_cap_limit;
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int maint_thres;
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};
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/**
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* struct ab8500_charger_maximization - struct used by the board config.
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* @use_maxi: Enable maximization for this battery type
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* @maxi_chg_curr: Maximum charger current allowed
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* @maxi_wait_cycles: cycles to wait before setting charger current
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* @charger_curr_step delta between two charger current settings (mA)
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*/
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struct ab8500_maxim_parameters {
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bool ena_maxi;
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int chg_curr;
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int wait_cycles;
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int charger_curr_step;
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};
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/**
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* struct battery_type - different batteries supported
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* @name: battery technology
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* @resis_high: battery upper resistance limit
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* @resis_low: battery lower resistance limit
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* @charge_full_design: Maximum battery capacity in mAh
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* @nominal_voltage: Nominal voltage of the battery in mV
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* @termination_vol: max voltage upto which battery can be charged
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* @termination_curr battery charging termination current in mA
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* @recharge_vol battery voltage limit that will trigger a new
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* full charging cycle in the case where maintenan-
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* -ce charging has been disabled
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* @normal_cur_lvl: charger current in normal state in mA
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* @normal_vol_lvl: charger voltage in normal state in mV
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* @maint_a_cur_lvl: charger current in maintenance A state in mA
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* @maint_a_vol_lvl: charger voltage in maintenance A state in mV
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* @maint_a_chg_timer_h: charge time in maintenance A state
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* @maint_b_cur_lvl: charger current in maintenance B state in mA
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* @maint_b_vol_lvl: charger voltage in maintenance B state in mV
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* @maint_b_chg_timer_h: charge time in maintenance B state
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* @low_high_cur_lvl: charger current in temp low/high state in mA
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* @low_high_vol_lvl: charger voltage in temp low/high state in mV'
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* @battery_resistance: battery inner resistance in mOhm.
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* @n_r_t_tbl_elements: number of elements in r_to_t_tbl
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* @r_to_t_tbl: table containing resistance to temp points
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* @n_v_cap_tbl_elements: number of elements in v_to_cap_tbl
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* @v_to_cap_tbl: Voltage to capacity (in %) table
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* @n_batres_tbl_elements number of elements in the batres_tbl
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* @batres_tbl battery internal resistance vs temperature table
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*/
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struct battery_type {
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int name;
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int resis_high;
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int resis_low;
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int charge_full_design;
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int nominal_voltage;
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int termination_vol;
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int termination_curr;
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int recharge_vol;
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int normal_cur_lvl;
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int normal_vol_lvl;
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int maint_a_cur_lvl;
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int maint_a_vol_lvl;
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int maint_a_chg_timer_h;
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int maint_b_cur_lvl;
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int maint_b_vol_lvl;
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int maint_b_chg_timer_h;
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int low_high_cur_lvl;
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int low_high_vol_lvl;
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int battery_resistance;
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int n_temp_tbl_elements;
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struct res_to_temp *r_to_t_tbl;
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int n_v_cap_tbl_elements;
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struct v_to_cap *v_to_cap_tbl;
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int n_batres_tbl_elements;
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struct batres_vs_temp *batres_tbl;
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};
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/**
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* struct ab8500_bm_capacity_levels - ab8500 capacity level data
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* @critical: critical capacity level in percent
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* @low: low capacity level in percent
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* @normal: normal capacity level in percent
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* @high: high capacity level in percent
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* @full: full capacity level in percent
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*/
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struct ab8500_bm_capacity_levels {
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int critical;
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int low;
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int normal;
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int high;
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int full;
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};
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/**
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* struct ab8500_bm_charger_parameters - Charger specific parameters
|
||||
* @usb_volt_max: maximum allowed USB charger voltage in mV
|
||||
* @usb_curr_max: maximum allowed USB charger current in mA
|
||||
* @ac_volt_max: maximum allowed AC charger voltage in mV
|
||||
* @ac_curr_max: maximum allowed AC charger current in mA
|
||||
*/
|
||||
struct ab8500_bm_charger_parameters {
|
||||
int usb_volt_max;
|
||||
int usb_curr_max;
|
||||
int ac_volt_max;
|
||||
int ac_curr_max;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ab8500_bm_data - ab8500 battery management data
|
||||
* @temp_under under this temp, charging is stopped
|
||||
* @temp_low between this temp and temp_under charging is reduced
|
||||
* @temp_high between this temp and temp_over charging is reduced
|
||||
* @temp_over over this temp, charging is stopped
|
||||
* @temp_interval_chg temperature measurement interval in s when charging
|
||||
* @temp_interval_nochg temperature measurement interval in s when not charging
|
||||
* @main_safety_tmr_h safety timer for main charger
|
||||
* @usb_safety_tmr_h safety timer for usb charger
|
||||
* @bkup_bat_v voltage which we charge the backup battery with
|
||||
* @bkup_bat_i current which we charge the backup battery with
|
||||
* @no_maintenance indicates that maintenance charging is disabled
|
||||
* @adc_therm placement of thermistor, batctrl or battemp adc
|
||||
* @chg_unknown_bat flag to enable charging of unknown batteries
|
||||
* @enable_overshoot flag to enable VBAT overshoot control
|
||||
* @fg_res resistance of FG resistor in 0.1mOhm
|
||||
* @n_btypes number of elements in array bat_type
|
||||
* @batt_id index of the identified battery in array bat_type
|
||||
* @interval_charging charge alg cycle period time when charging (sec)
|
||||
* @interval_not_charging charge alg cycle period time when not charging (sec)
|
||||
* @temp_hysteresis temperature hysteresis
|
||||
* @gnd_lift_resistance Battery ground to phone ground resistance (mOhm)
|
||||
* @maxi: maximization parameters
|
||||
* @cap_levels capacity in percent for the different capacity levels
|
||||
* @bat_type table of supported battery types
|
||||
* @chg_params charger parameters
|
||||
* @fg_params fuel gauge parameters
|
||||
*/
|
||||
struct ab8500_bm_data {
|
||||
int temp_under;
|
||||
int temp_low;
|
||||
int temp_high;
|
||||
int temp_over;
|
||||
int temp_interval_chg;
|
||||
int temp_interval_nochg;
|
||||
int main_safety_tmr_h;
|
||||
int usb_safety_tmr_h;
|
||||
int bkup_bat_v;
|
||||
int bkup_bat_i;
|
||||
bool no_maintenance;
|
||||
bool chg_unknown_bat;
|
||||
bool enable_overshoot;
|
||||
enum adc_therm adc_therm;
|
||||
int fg_res;
|
||||
int n_btypes;
|
||||
int batt_id;
|
||||
int interval_charging;
|
||||
int interval_not_charging;
|
||||
int temp_hysteresis;
|
||||
int gnd_lift_resistance;
|
||||
const struct ab8500_maxim_parameters *maxi;
|
||||
const struct ab8500_bm_capacity_levels *cap_levels;
|
||||
const struct battery_type *bat_type;
|
||||
const struct ab8500_bm_charger_parameters *chg_params;
|
||||
const struct ab8500_fg_parameters *fg_params;
|
||||
};
|
||||
|
||||
struct ab8500_charger_platform_data {
|
||||
char **supplied_to;
|
||||
size_t num_supplicants;
|
||||
bool autopower_cfg;
|
||||
};
|
||||
|
||||
struct ab8500_btemp_platform_data {
|
||||
char **supplied_to;
|
||||
size_t num_supplicants;
|
||||
};
|
||||
|
||||
struct ab8500_fg_platform_data {
|
||||
char **supplied_to;
|
||||
size_t num_supplicants;
|
||||
};
|
||||
|
||||
struct ab8500_chargalg_platform_data {
|
||||
char **supplied_to;
|
||||
size_t num_supplicants;
|
||||
};
|
||||
struct ab8500_btemp;
|
||||
struct ab8500_gpadc;
|
||||
struct ab8500_fg;
|
||||
#ifdef CONFIG_AB8500_BM
|
||||
void ab8500_fg_reinit(void);
|
||||
void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA);
|
||||
struct ab8500_btemp *ab8500_btemp_get(void);
|
||||
int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp);
|
||||
struct ab8500_fg *ab8500_fg_get(void);
|
||||
int ab8500_fg_inst_curr_blocking(struct ab8500_fg *dev);
|
||||
int ab8500_fg_inst_curr_start(struct ab8500_fg *di);
|
||||
int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res);
|
||||
int ab8500_fg_inst_curr_done(struct ab8500_fg *di);
|
||||
|
||||
#else
|
||||
int ab8500_fg_inst_curr_done(struct ab8500_fg *di)
|
||||
{
|
||||
}
|
||||
static void ab8500_fg_reinit(void)
|
||||
{
|
||||
}
|
||||
static void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA)
|
||||
{
|
||||
}
|
||||
static struct ab8500_btemp *ab8500_btemp_get(void)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
static int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
struct ab8500_fg *ab8500_fg_get(void)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
static int ab8500_fg_inst_curr_blocking(struct ab8500_fg *dev)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static inline int ab8500_fg_inst_curr_start(struct ab8500_fg *di)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static inline int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
#endif
|
||||
#endif /* _AB8500_BM_H */
|
||||
Loading…
Reference in New Issue
Block a user