![Major Lee](/assets/img/avatar_default.png)
When DCDC input line over current detecting, PMIC will change charging current automatically. Logging event is enough. Signed-off-by: Major Lee <major_lee@wistron.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Cc: Feng Tang <feng.tang@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> [fix build] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
798 lines
22 KiB
C
798 lines
22 KiB
C
/*
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* intel_mid_battery.c - Intel MID PMIC Battery Driver
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*
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* Copyright (C) 2009 Intel Corporation
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* Author: Nithish Mahalingam <nithish.mahalingam@intel.com>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/workqueue.h>
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#include <linux/jiffies.h>
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#include <linux/param.h>
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#include <linux/device.h>
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#include <linux/spi/spi.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <asm/intel_scu_ipc.h>
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#define DRIVER_NAME "pmic_battery"
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/*********************************************************************
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* Generic defines
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*********************************************************************/
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static int debug;
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module_param(debug, int, 0444);
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MODULE_PARM_DESC(debug, "Flag to enable PMIC Battery debug messages.");
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#define PMIC_BATT_DRV_INFO_UPDATED 1
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#define PMIC_BATT_PRESENT 1
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#define PMIC_BATT_NOT_PRESENT 0
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#define PMIC_USB_PRESENT PMIC_BATT_PRESENT
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#define PMIC_USB_NOT_PRESENT PMIC_BATT_NOT_PRESENT
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/* pmic battery register related */
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#define PMIC_BATT_CHR_SCHRGINT_ADDR 0xD2
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#define PMIC_BATT_CHR_SBATOVP_MASK (1 << 1)
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#define PMIC_BATT_CHR_STEMP_MASK (1 << 2)
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#define PMIC_BATT_CHR_SCOMP_MASK (1 << 3)
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#define PMIC_BATT_CHR_SUSBDET_MASK (1 << 4)
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#define PMIC_BATT_CHR_SBATDET_MASK (1 << 5)
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#define PMIC_BATT_CHR_SDCLMT_MASK (1 << 6)
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#define PMIC_BATT_CHR_SUSBOVP_MASK (1 << 7)
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#define PMIC_BATT_CHR_EXCPT_MASK 0x86
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#define PMIC_BATT_ADC_ACCCHRG_MASK (1 << 31)
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#define PMIC_BATT_ADC_ACCCHRGVAL_MASK 0x7FFFFFFF
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/* pmic ipc related */
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#define PMIC_BATT_CHR_IPC_FCHRG_SUBID 0x4
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#define PMIC_BATT_CHR_IPC_TCHRG_SUBID 0x6
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/* types of battery charging */
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enum batt_charge_type {
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BATT_USBOTG_500MA_CHARGE,
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BATT_USBOTG_TRICKLE_CHARGE,
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};
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/* valid battery events */
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enum batt_event {
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BATT_EVENT_BATOVP_EXCPT,
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BATT_EVENT_USBOVP_EXCPT,
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BATT_EVENT_TEMP_EXCPT,
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BATT_EVENT_DCLMT_EXCPT,
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BATT_EVENT_EXCPT
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};
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/*********************************************************************
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* Battery properties
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*********************************************************************/
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/*
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* pmic battery info
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*/
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struct pmic_power_module_info {
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bool is_dev_info_updated;
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struct device *dev;
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/* pmic battery data */
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unsigned long update_time; /* jiffies when data read */
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unsigned int usb_is_present;
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unsigned int batt_is_present;
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unsigned int batt_health;
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unsigned int usb_health;
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unsigned int batt_status;
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unsigned int batt_charge_now; /* in mAS */
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unsigned int batt_prev_charge_full; /* in mAS */
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unsigned int batt_charge_rate; /* in units per second */
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struct power_supply usb;
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struct power_supply batt;
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int irq; /* GPE_ID or IRQ# */
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struct workqueue_struct *monitor_wqueue;
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struct delayed_work monitor_battery;
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struct work_struct handler;
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};
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static unsigned int delay_time = 2000; /* in ms */
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/*
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* pmic ac properties
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*/
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static enum power_supply_property pmic_usb_props[] = {
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_HEALTH,
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};
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/*
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* pmic battery properties
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*/
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static enum power_supply_property pmic_battery_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_CHARGE_NOW,
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POWER_SUPPLY_PROP_CHARGE_FULL,
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};
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/*
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* Glue functions for talking to the IPC
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*/
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struct battery_property {
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u32 capacity; /* Charger capacity */
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u8 crnt; /* Quick charge current value*/
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u8 volt; /* Fine adjustment of constant charge voltage */
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u8 prot; /* CHRGPROT register value */
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u8 prot2; /* CHRGPROT1 register value */
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u8 timer; /* Charging timer */
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};
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#define IPCMSG_BATTERY 0xEF
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/* Battery coulomb counter accumulator commands */
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#define IPC_CMD_CC_WR 0 /* Update coulomb counter value */
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#define IPC_CMD_CC_RD 1 /* Read coulomb counter value */
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#define IPC_CMD_BATTERY_PROPERTY 2 /* Read Battery property */
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/**
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* pmic_scu_ipc_battery_cc_read - read battery cc
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* @value: battery coulomb counter read
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*
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* Reads the battery couloumb counter value, returns 0 on success, or
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* an error code
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*
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* This function may sleep. Locking for SCU accesses is handled for
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* the caller.
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*/
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static int pmic_scu_ipc_battery_cc_read(u32 *value)
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{
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return intel_scu_ipc_command(IPCMSG_BATTERY, IPC_CMD_CC_RD,
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NULL, 0, value, 1);
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}
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/**
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* pmic_scu_ipc_battery_property_get - fetch properties
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* @prop: battery properties
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*
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* Retrieve the battery properties from the power management
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*
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* This function may sleep. Locking for SCU accesses is handled for
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* the caller.
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*/
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static int pmic_scu_ipc_battery_property_get(struct battery_property *prop)
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{
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u32 data[3];
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u8 *p = (u8 *)&data[1];
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int err = intel_scu_ipc_command(IPCMSG_BATTERY,
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IPC_CMD_BATTERY_PROPERTY, NULL, 0, data, 3);
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prop->capacity = data[0];
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prop->crnt = *p++;
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prop->volt = *p++;
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prop->prot = *p++;
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prop->prot2 = *p++;
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prop->timer = *p++;
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return err;
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}
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/**
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* pmic_scu_ipc_set_charger - set charger
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* @charger: charger to select
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*
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* Switch the charging mode for the SCU
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*/
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static int pmic_scu_ipc_set_charger(int charger)
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{
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return intel_scu_ipc_simple_command(IPCMSG_BATTERY, charger);
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}
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/**
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* pmic_battery_log_event - log battery events
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* @event: battery event to be logged
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* Context: can sleep
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*
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* There are multiple battery events which may be of interest to users;
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* this battery function logs the different battery events onto the
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* kernel log messages.
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*/
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static void pmic_battery_log_event(enum batt_event event)
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{
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printk(KERN_WARNING "pmic-battery: ");
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switch (event) {
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case BATT_EVENT_BATOVP_EXCPT:
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printk(KERN_CONT "battery overvoltage condition\n");
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break;
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case BATT_EVENT_USBOVP_EXCPT:
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printk(KERN_CONT "usb charger overvoltage condition\n");
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break;
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case BATT_EVENT_TEMP_EXCPT:
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printk(KERN_CONT "high battery temperature condition\n");
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break;
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case BATT_EVENT_DCLMT_EXCPT:
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printk(KERN_CONT "over battery charge current condition\n");
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break;
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default:
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printk(KERN_CONT "charger/battery exception %d\n", event);
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break;
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}
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}
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/**
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* pmic_battery_read_status - read battery status information
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* @pbi: device info structure to update the read information
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* Context: can sleep
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*
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* PMIC power source information need to be updated based on the data read
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* from the PMIC battery registers.
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*
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*/
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static void pmic_battery_read_status(struct pmic_power_module_info *pbi)
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{
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unsigned int update_time_intrvl;
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unsigned int chrg_val;
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u32 ccval;
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u8 r8;
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struct battery_property batt_prop;
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int batt_present = 0;
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int usb_present = 0;
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int batt_exception = 0;
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/* make sure the last batt_status read happened delay_time before */
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if (pbi->update_time && time_before(jiffies, pbi->update_time +
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msecs_to_jiffies(delay_time)))
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return;
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update_time_intrvl = jiffies_to_msecs(jiffies - pbi->update_time);
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pbi->update_time = jiffies;
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/* read coulomb counter registers and schrgint register */
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if (pmic_scu_ipc_battery_cc_read(&ccval)) {
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dev_warn(pbi->dev, "%s(): ipc config cmd failed\n",
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__func__);
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return;
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}
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if (intel_scu_ipc_ioread8(PMIC_BATT_CHR_SCHRGINT_ADDR, &r8)) {
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dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
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__func__);
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return;
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}
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/*
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* set pmic_power_module_info members based on pmic register values
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* read.
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*/
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/* set batt_is_present */
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if (r8 & PMIC_BATT_CHR_SBATDET_MASK) {
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pbi->batt_is_present = PMIC_BATT_PRESENT;
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batt_present = 1;
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} else {
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pbi->batt_is_present = PMIC_BATT_NOT_PRESENT;
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pbi->batt_health = POWER_SUPPLY_HEALTH_UNKNOWN;
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pbi->batt_status = POWER_SUPPLY_STATUS_UNKNOWN;
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}
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/* set batt_health */
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if (batt_present) {
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if (r8 & PMIC_BATT_CHR_SBATOVP_MASK) {
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pbi->batt_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
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pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
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pmic_battery_log_event(BATT_EVENT_BATOVP_EXCPT);
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batt_exception = 1;
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} else if (r8 & PMIC_BATT_CHR_STEMP_MASK) {
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pbi->batt_health = POWER_SUPPLY_HEALTH_OVERHEAT;
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pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
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pmic_battery_log_event(BATT_EVENT_TEMP_EXCPT);
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batt_exception = 1;
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} else {
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pbi->batt_health = POWER_SUPPLY_HEALTH_GOOD;
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if (r8 & PMIC_BATT_CHR_SDCLMT_MASK) {
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/* PMIC will change charging current automatically */
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pmic_battery_log_event(BATT_EVENT_DCLMT_EXCPT);
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}
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}
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}
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/* set usb_is_present */
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if (r8 & PMIC_BATT_CHR_SUSBDET_MASK) {
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pbi->usb_is_present = PMIC_USB_PRESENT;
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usb_present = 1;
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} else {
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pbi->usb_is_present = PMIC_USB_NOT_PRESENT;
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pbi->usb_health = POWER_SUPPLY_HEALTH_UNKNOWN;
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}
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if (usb_present) {
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if (r8 & PMIC_BATT_CHR_SUSBOVP_MASK) {
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pbi->usb_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
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pmic_battery_log_event(BATT_EVENT_USBOVP_EXCPT);
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} else {
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pbi->usb_health = POWER_SUPPLY_HEALTH_GOOD;
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}
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}
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chrg_val = ccval & PMIC_BATT_ADC_ACCCHRGVAL_MASK;
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/* set batt_prev_charge_full to battery capacity the first time */
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if (!pbi->is_dev_info_updated) {
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if (pmic_scu_ipc_battery_property_get(&batt_prop)) {
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dev_warn(pbi->dev, "%s(): ipc config cmd failed\n",
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__func__);
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return;
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}
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pbi->batt_prev_charge_full = batt_prop.capacity;
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}
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/* set batt_status */
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if (batt_present && !batt_exception) {
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if (r8 & PMIC_BATT_CHR_SCOMP_MASK) {
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pbi->batt_status = POWER_SUPPLY_STATUS_FULL;
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pbi->batt_prev_charge_full = chrg_val;
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} else if (ccval & PMIC_BATT_ADC_ACCCHRG_MASK) {
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pbi->batt_status = POWER_SUPPLY_STATUS_DISCHARGING;
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} else {
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pbi->batt_status = POWER_SUPPLY_STATUS_CHARGING;
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}
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}
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/* set batt_charge_rate */
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if (pbi->is_dev_info_updated && batt_present && !batt_exception) {
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if (pbi->batt_status == POWER_SUPPLY_STATUS_DISCHARGING) {
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if (pbi->batt_charge_now - chrg_val) {
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pbi->batt_charge_rate = ((pbi->batt_charge_now -
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chrg_val) * 1000 * 60) /
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update_time_intrvl;
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}
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} else if (pbi->batt_status == POWER_SUPPLY_STATUS_CHARGING) {
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if (chrg_val - pbi->batt_charge_now) {
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pbi->batt_charge_rate = ((chrg_val -
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pbi->batt_charge_now) * 1000 * 60) /
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update_time_intrvl;
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}
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} else
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pbi->batt_charge_rate = 0;
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} else {
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pbi->batt_charge_rate = -1;
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}
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/* batt_charge_now */
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if (batt_present && !batt_exception)
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pbi->batt_charge_now = chrg_val;
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else
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pbi->batt_charge_now = -1;
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pbi->is_dev_info_updated = PMIC_BATT_DRV_INFO_UPDATED;
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}
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/**
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* pmic_usb_get_property - usb power source get property
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* @psy: usb power supply context
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* @psp: usb power source property
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* @val: usb power source property value
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* Context: can sleep
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*
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* PMIC usb power source property needs to be provided to power_supply
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* subsytem for it to provide the information to users.
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*/
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static int pmic_usb_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pmic_power_module_info *pbi = container_of(psy,
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struct pmic_power_module_info, usb);
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/* update pmic_power_module_info members */
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pmic_battery_read_status(pbi);
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switch (psp) {
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case POWER_SUPPLY_PROP_PRESENT:
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val->intval = pbi->usb_is_present;
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break;
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case POWER_SUPPLY_PROP_HEALTH:
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val->intval = pbi->usb_health;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static inline unsigned long mAStouAh(unsigned long v)
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{
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/* seconds to hours, mA to µA */
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return (v * 1000) / 3600;
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}
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/**
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* pmic_battery_get_property - battery power source get property
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* @psy: battery power supply context
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* @psp: battery power source property
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* @val: battery power source property value
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* Context: can sleep
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*
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* PMIC battery power source property needs to be provided to power_supply
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* subsytem for it to provide the information to users.
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*/
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static int pmic_battery_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pmic_power_module_info *pbi = container_of(psy,
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struct pmic_power_module_info, batt);
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/* update pmic_power_module_info members */
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pmic_battery_read_status(pbi);
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switch (psp) {
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case POWER_SUPPLY_PROP_STATUS:
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val->intval = pbi->batt_status;
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break;
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case POWER_SUPPLY_PROP_HEALTH:
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val->intval = pbi->batt_health;
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break;
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case POWER_SUPPLY_PROP_PRESENT:
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val->intval = pbi->batt_is_present;
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break;
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case POWER_SUPPLY_PROP_CHARGE_NOW:
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val->intval = mAStouAh(pbi->batt_charge_now);
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break;
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case POWER_SUPPLY_PROP_CHARGE_FULL:
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val->intval = mAStouAh(pbi->batt_prev_charge_full);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/**
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* pmic_battery_monitor - monitor battery status
|
|
* @work: work structure
|
|
* Context: can sleep
|
|
*
|
|
* PMIC battery status needs to be monitored for any change
|
|
* and information needs to be frequently updated.
|
|
*/
|
|
static void pmic_battery_monitor(struct work_struct *work)
|
|
{
|
|
struct pmic_power_module_info *pbi = container_of(work,
|
|
struct pmic_power_module_info, monitor_battery.work);
|
|
|
|
/* update pmic_power_module_info members */
|
|
pmic_battery_read_status(pbi);
|
|
queue_delayed_work(pbi->monitor_wqueue, &pbi->monitor_battery, HZ * 10);
|
|
}
|
|
|
|
/**
|
|
* pmic_battery_set_charger - set battery charger
|
|
* @pbi: device info structure
|
|
* @chrg: charge mode to set battery charger in
|
|
* Context: can sleep
|
|
*
|
|
* PMIC battery charger needs to be enabled based on the usb charge
|
|
* capabilities connected to the platform.
|
|
*/
|
|
static int pmic_battery_set_charger(struct pmic_power_module_info *pbi,
|
|
enum batt_charge_type chrg)
|
|
{
|
|
int retval;
|
|
|
|
/* set usblmt bits and chrgcntl register bits appropriately */
|
|
switch (chrg) {
|
|
case BATT_USBOTG_500MA_CHARGE:
|
|
retval = pmic_scu_ipc_set_charger(PMIC_BATT_CHR_IPC_FCHRG_SUBID);
|
|
break;
|
|
case BATT_USBOTG_TRICKLE_CHARGE:
|
|
retval = pmic_scu_ipc_set_charger(PMIC_BATT_CHR_IPC_TCHRG_SUBID);
|
|
break;
|
|
default:
|
|
dev_warn(pbi->dev, "%s(): out of range usb charger "
|
|
"charge detected\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (retval) {
|
|
dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
|
|
__func__);
|
|
return retval;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* pmic_battery_interrupt_handler - pmic battery interrupt handler
|
|
* Context: interrupt context
|
|
*
|
|
* PMIC battery interrupt handler which will be called with either
|
|
* battery full condition occurs or usb otg & battery connect
|
|
* condition occurs.
|
|
*/
|
|
static irqreturn_t pmic_battery_interrupt_handler(int id, void *dev)
|
|
{
|
|
struct pmic_power_module_info *pbi = dev;
|
|
|
|
schedule_work(&pbi->handler);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* pmic_battery_handle_intrpt - pmic battery service interrupt
|
|
* @work: work structure
|
|
* Context: can sleep
|
|
*
|
|
* PMIC battery needs to either update the battery status as full
|
|
* if it detects battery full condition caused the interrupt or needs
|
|
* to enable battery charger if it detects usb and battery detect
|
|
* caused the source of interrupt.
|
|
*/
|
|
static void pmic_battery_handle_intrpt(struct work_struct *work)
|
|
{
|
|
struct pmic_power_module_info *pbi = container_of(work,
|
|
struct pmic_power_module_info, handler);
|
|
enum batt_charge_type chrg;
|
|
u8 r8;
|
|
|
|
if (intel_scu_ipc_ioread8(PMIC_BATT_CHR_SCHRGINT_ADDR, &r8)) {
|
|
dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
/* find the cause of the interrupt */
|
|
if (r8 & PMIC_BATT_CHR_SBATDET_MASK) {
|
|
pbi->batt_is_present = PMIC_BATT_PRESENT;
|
|
} else {
|
|
pbi->batt_is_present = PMIC_BATT_NOT_PRESENT;
|
|
pbi->batt_health = POWER_SUPPLY_HEALTH_UNKNOWN;
|
|
pbi->batt_status = POWER_SUPPLY_STATUS_UNKNOWN;
|
|
return;
|
|
}
|
|
|
|
if (r8 & PMIC_BATT_CHR_EXCPT_MASK) {
|
|
pbi->batt_health = POWER_SUPPLY_HEALTH_UNKNOWN;
|
|
pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
|
|
pbi->usb_health = POWER_SUPPLY_HEALTH_UNKNOWN;
|
|
pmic_battery_log_event(BATT_EVENT_EXCPT);
|
|
return;
|
|
} else {
|
|
pbi->batt_health = POWER_SUPPLY_HEALTH_GOOD;
|
|
pbi->usb_health = POWER_SUPPLY_HEALTH_GOOD;
|
|
}
|
|
|
|
if (r8 & PMIC_BATT_CHR_SCOMP_MASK) {
|
|
u32 ccval;
|
|
pbi->batt_status = POWER_SUPPLY_STATUS_FULL;
|
|
|
|
if (pmic_scu_ipc_battery_cc_read(&ccval)) {
|
|
dev_warn(pbi->dev, "%s(): ipc config cmd "
|
|
"failed\n", __func__);
|
|
return;
|
|
}
|
|
pbi->batt_prev_charge_full = ccval &
|
|
PMIC_BATT_ADC_ACCCHRGVAL_MASK;
|
|
return;
|
|
}
|
|
|
|
if (r8 & PMIC_BATT_CHR_SUSBDET_MASK) {
|
|
pbi->usb_is_present = PMIC_USB_PRESENT;
|
|
} else {
|
|
pbi->usb_is_present = PMIC_USB_NOT_PRESENT;
|
|
pbi->usb_health = POWER_SUPPLY_HEALTH_UNKNOWN;
|
|
return;
|
|
}
|
|
|
|
/* setup battery charging */
|
|
|
|
#if 0
|
|
/* check usb otg power capability and set charger accordingly */
|
|
retval = langwell_udc_maxpower(&power);
|
|
if (retval) {
|
|
dev_warn(pbi->dev,
|
|
"%s(): usb otg power query failed with error code %d\n",
|
|
__func__, retval);
|
|
return;
|
|
}
|
|
|
|
if (power >= 500)
|
|
chrg = BATT_USBOTG_500MA_CHARGE;
|
|
else
|
|
#endif
|
|
chrg = BATT_USBOTG_TRICKLE_CHARGE;
|
|
|
|
/* enable battery charging */
|
|
if (pmic_battery_set_charger(pbi, chrg)) {
|
|
dev_warn(pbi->dev,
|
|
"%s(): failed to set up battery charging\n", __func__);
|
|
return;
|
|
}
|
|
|
|
dev_dbg(pbi->dev,
|
|
"pmic-battery: %s() - setting up battery charger successful\n",
|
|
__func__);
|
|
}
|
|
|
|
/**
|
|
* pmic_battery_probe - pmic battery initialize
|
|
* @irq: pmic battery device irq
|
|
* @dev: pmic battery device structure
|
|
* Context: can sleep
|
|
*
|
|
* PMIC battery initializes its internal data structue and other
|
|
* infrastructure components for it to work as expected.
|
|
*/
|
|
static __devinit int probe(int irq, struct device *dev)
|
|
{
|
|
int retval = 0;
|
|
struct pmic_power_module_info *pbi;
|
|
|
|
dev_dbg(dev, "pmic-battery: found pmic battery device\n");
|
|
|
|
pbi = kzalloc(sizeof(*pbi), GFP_KERNEL);
|
|
if (!pbi) {
|
|
dev_err(dev, "%s(): memory allocation failed\n",
|
|
__func__);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pbi->dev = dev;
|
|
pbi->irq = irq;
|
|
dev_set_drvdata(dev, pbi);
|
|
|
|
/* initialize all required framework before enabling interrupts */
|
|
INIT_WORK(&pbi->handler, pmic_battery_handle_intrpt);
|
|
INIT_DELAYED_WORK(&pbi->monitor_battery, pmic_battery_monitor);
|
|
pbi->monitor_wqueue =
|
|
create_singlethread_workqueue(dev_name(dev));
|
|
if (!pbi->monitor_wqueue) {
|
|
dev_err(dev, "%s(): wqueue init failed\n", __func__);
|
|
retval = -ESRCH;
|
|
goto wqueue_failed;
|
|
}
|
|
|
|
/* register interrupt */
|
|
retval = request_irq(pbi->irq, pmic_battery_interrupt_handler,
|
|
0, DRIVER_NAME, pbi);
|
|
if (retval) {
|
|
dev_err(dev, "%s(): cannot get IRQ\n", __func__);
|
|
goto requestirq_failed;
|
|
}
|
|
|
|
/* register pmic-batt with power supply subsystem */
|
|
pbi->batt.name = "pmic-batt";
|
|
pbi->batt.type = POWER_SUPPLY_TYPE_BATTERY;
|
|
pbi->batt.properties = pmic_battery_props;
|
|
pbi->batt.num_properties = ARRAY_SIZE(pmic_battery_props);
|
|
pbi->batt.get_property = pmic_battery_get_property;
|
|
retval = power_supply_register(dev, &pbi->batt);
|
|
if (retval) {
|
|
dev_err(dev,
|
|
"%s(): failed to register pmic battery device with power supply subsystem\n",
|
|
__func__);
|
|
goto power_reg_failed;
|
|
}
|
|
|
|
dev_dbg(dev, "pmic-battery: %s() - pmic battery device "
|
|
"registration with power supply subsystem successful\n",
|
|
__func__);
|
|
|
|
queue_delayed_work(pbi->monitor_wqueue, &pbi->monitor_battery, HZ * 1);
|
|
|
|
/* register pmic-usb with power supply subsystem */
|
|
pbi->usb.name = "pmic-usb";
|
|
pbi->usb.type = POWER_SUPPLY_TYPE_USB;
|
|
pbi->usb.properties = pmic_usb_props;
|
|
pbi->usb.num_properties = ARRAY_SIZE(pmic_usb_props);
|
|
pbi->usb.get_property = pmic_usb_get_property;
|
|
retval = power_supply_register(dev, &pbi->usb);
|
|
if (retval) {
|
|
dev_err(dev,
|
|
"%s(): failed to register pmic usb device with power supply subsystem\n",
|
|
__func__);
|
|
goto power_reg_failed_1;
|
|
}
|
|
|
|
if (debug)
|
|
printk(KERN_INFO "pmic-battery: %s() - pmic usb device "
|
|
"registration with power supply subsystem successful\n",
|
|
__func__);
|
|
|
|
return retval;
|
|
|
|
power_reg_failed_1:
|
|
power_supply_unregister(&pbi->batt);
|
|
power_reg_failed:
|
|
cancel_delayed_work_sync(&pbi->monitor_battery);
|
|
requestirq_failed:
|
|
destroy_workqueue(pbi->monitor_wqueue);
|
|
wqueue_failed:
|
|
kfree(pbi);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int __devinit platform_pmic_battery_probe(struct platform_device *pdev)
|
|
{
|
|
return probe(pdev->id, &pdev->dev);
|
|
}
|
|
|
|
/**
|
|
* pmic_battery_remove - pmic battery finalize
|
|
* @dev: pmic battery device structure
|
|
* Context: can sleep
|
|
*
|
|
* PMIC battery finalizes its internal data structue and other
|
|
* infrastructure components that it initialized in
|
|
* pmic_battery_probe.
|
|
*/
|
|
|
|
static int __devexit platform_pmic_battery_remove(struct platform_device *pdev)
|
|
{
|
|
struct pmic_power_module_info *pbi = dev_get_drvdata(&pdev->dev);
|
|
|
|
free_irq(pbi->irq, pbi);
|
|
cancel_delayed_work_sync(&pbi->monitor_battery);
|
|
destroy_workqueue(pbi->monitor_wqueue);
|
|
|
|
power_supply_unregister(&pbi->usb);
|
|
power_supply_unregister(&pbi->batt);
|
|
|
|
cancel_work_sync(&pbi->handler);
|
|
kfree(pbi);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver platform_pmic_battery_driver = {
|
|
.driver = {
|
|
.name = DRIVER_NAME,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = platform_pmic_battery_probe,
|
|
.remove = __devexit_p(platform_pmic_battery_remove),
|
|
};
|
|
|
|
static int __init platform_pmic_battery_module_init(void)
|
|
{
|
|
return platform_driver_register(&platform_pmic_battery_driver);
|
|
}
|
|
|
|
static void __exit platform_pmic_battery_module_exit(void)
|
|
{
|
|
platform_driver_unregister(&platform_pmic_battery_driver);
|
|
}
|
|
|
|
module_init(platform_pmic_battery_module_init);
|
|
module_exit(platform_pmic_battery_module_exit);
|
|
|
|
MODULE_AUTHOR("Nithish Mahalingam <nithish.mahalingam@intel.com>");
|
|
MODULE_DESCRIPTION("Intel Moorestown PMIC Battery Driver");
|
|
MODULE_LICENSE("GPL");
|