diff options
author | Sebastian Reichel <sre@kernel.org> | 2016-06-17 14:54:32 +0300 |
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committer | Sebastian Reichel <sre@kernel.org> | 2016-08-11 02:11:03 +0300 |
commit | 8c0984e5a75337df513047ec92a6c09d78e3e5cd (patch) | |
tree | a2fc0a0dd7c7c40d9379bdd1c2b279c0959d0e1f /drivers/power/ab8500_charger.c | |
parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
download | linux-8c0984e5a75337df513047ec92a6c09d78e3e5cd.tar.xz |
power: move power supply drivers to power/supply
This moves all power supply drivers from drivers/power/
to drivers/power/supply/. The intention is a cleaner
source tree, since drivers/power/ also contains frameworks
unrelated to power supply, like adaptive voltage scaling.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power/ab8500_charger.c')
-rw-r--r-- | drivers/power/ab8500_charger.c | 3765 |
1 files changed, 0 insertions, 3765 deletions
diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c deleted file mode 100644 index 30de5d42b26a..000000000000 --- a/drivers/power/ab8500_charger.c +++ /dev/null @@ -1,3765 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2012 - * - * Charger driver for AB8500 - * - * License Terms: GNU General Public License v2 - * Author: - * Johan Palsson <johan.palsson@stericsson.com> - * Karl Komierowski <karl.komierowski@stericsson.com> - * Arun R Murthy <arun.murthy@stericsson.com> - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/device.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/notifier.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <linux/power_supply.h> -#include <linux/completion.h> -#include <linux/regulator/consumer.h> -#include <linux/err.h> -#include <linux/workqueue.h> -#include <linux/kobject.h> -#include <linux/of.h> -#include <linux/mfd/core.h> -#include <linux/mfd/abx500/ab8500.h> -#include <linux/mfd/abx500.h> -#include <linux/mfd/abx500/ab8500-bm.h> -#include <linux/mfd/abx500/ab8500-gpadc.h> -#include <linux/mfd/abx500/ux500_chargalg.h> -#include <linux/usb/otg.h> -#include <linux/mutex.h> - -/* Charger constants */ -#define NO_PW_CONN 0 -#define AC_PW_CONN 1 -#define USB_PW_CONN 2 - -#define MAIN_WDOG_ENA 0x01 -#define MAIN_WDOG_KICK 0x02 -#define MAIN_WDOG_DIS 0x00 -#define CHARG_WD_KICK 0x01 -#define MAIN_CH_ENA 0x01 -#define MAIN_CH_NO_OVERSHOOT_ENA_N 0x02 -#define USB_CH_ENA 0x01 -#define USB_CHG_NO_OVERSHOOT_ENA_N 0x02 -#define MAIN_CH_DET 0x01 -#define MAIN_CH_CV_ON 0x04 -#define USB_CH_CV_ON 0x08 -#define VBUS_DET_DBNC100 0x02 -#define VBUS_DET_DBNC1 0x01 -#define OTP_ENABLE_WD 0x01 -#define DROP_COUNT_RESET 0x01 -#define USB_CH_DET 0x01 - -#define MAIN_CH_INPUT_CURR_SHIFT 4 -#define VBUS_IN_CURR_LIM_SHIFT 4 -#define AB8540_VBUS_IN_CURR_LIM_SHIFT 2 -#define AUTO_VBUS_IN_CURR_LIM_SHIFT 4 -#define AB8540_AUTO_VBUS_IN_CURR_MASK 0x3F -#define VBUS_IN_CURR_LIM_RETRY_SET_TIME 30 /* seconds */ - -#define LED_INDICATOR_PWM_ENA 0x01 -#define LED_INDICATOR_PWM_DIS 0x00 -#define LED_IND_CUR_5MA 0x04 -#define LED_INDICATOR_PWM_DUTY_252_256 0xBF - -/* HW failure constants */ -#define MAIN_CH_TH_PROT 0x02 -#define VBUS_CH_NOK 0x08 -#define USB_CH_TH_PROT 0x02 -#define VBUS_OVV_TH 0x01 -#define MAIN_CH_NOK 0x01 -#define VBUS_DET 0x80 - -#define MAIN_CH_STATUS2_MAINCHGDROP 0x80 -#define MAIN_CH_STATUS2_MAINCHARGERDETDBNC 0x40 -#define USB_CH_VBUSDROP 0x40 -#define USB_CH_VBUSDETDBNC 0x01 - -/* UsbLineStatus register bit masks */ -#define AB8500_USB_LINK_STATUS 0x78 -#define AB8505_USB_LINK_STATUS 0xF8 -#define AB8500_STD_HOST_SUSP 0x18 -#define USB_LINK_STATUS_SHIFT 3 - -/* Watchdog timeout constant */ -#define WD_TIMER 0x30 /* 4min */ -#define WD_KICK_INTERVAL (60 * HZ) - -/* Lowest charger voltage is 3.39V -> 0x4E */ -#define LOW_VOLT_REG 0x4E - -/* Step up/down delay in us */ -#define STEP_UDELAY 1000 - -#define CHARGER_STATUS_POLL 10 /* in ms */ - -#define CHG_WD_INTERVAL (60 * HZ) - -#define AB8500_SW_CONTROL_FALLBACK 0x03 -/* Wait for enumeration before charing in us */ -#define WAIT_ACA_RID_ENUMERATION (5 * 1000) -/*External charger control*/ -#define AB8500_SYS_CHARGER_CONTROL_REG 0x52 -#define EXTERNAL_CHARGER_DISABLE_REG_VAL 0x03 -#define EXTERNAL_CHARGER_ENABLE_REG_VAL 0x07 - -/* UsbLineStatus register - usb types */ -enum ab8500_charger_link_status { - USB_STAT_NOT_CONFIGURED, - USB_STAT_STD_HOST_NC, - USB_STAT_STD_HOST_C_NS, - USB_STAT_STD_HOST_C_S, - USB_STAT_HOST_CHG_NM, - USB_STAT_HOST_CHG_HS, - USB_STAT_HOST_CHG_HS_CHIRP, - USB_STAT_DEDICATED_CHG, - USB_STAT_ACA_RID_A, - USB_STAT_ACA_RID_B, - USB_STAT_ACA_RID_C_NM, - USB_STAT_ACA_RID_C_HS, - USB_STAT_ACA_RID_C_HS_CHIRP, - USB_STAT_HM_IDGND, - USB_STAT_RESERVED, - USB_STAT_NOT_VALID_LINK, - USB_STAT_PHY_EN, - USB_STAT_SUP_NO_IDGND_VBUS, - USB_STAT_SUP_IDGND_VBUS, - USB_STAT_CHARGER_LINE_1, - USB_STAT_CARKIT_1, - USB_STAT_CARKIT_2, - USB_STAT_ACA_DOCK_CHARGER, -}; - -enum ab8500_usb_state { - AB8500_BM_USB_STATE_RESET_HS, /* HighSpeed Reset */ - AB8500_BM_USB_STATE_RESET_FS, /* FullSpeed/LowSpeed Reset */ - AB8500_BM_USB_STATE_CONFIGURED, - AB8500_BM_USB_STATE_SUSPEND, - AB8500_BM_USB_STATE_RESUME, - AB8500_BM_USB_STATE_MAX, -}; - -/* VBUS input current limits supported in AB8500 in mA */ -#define USB_CH_IP_CUR_LVL_0P05 50 -#define USB_CH_IP_CUR_LVL_0P09 98 -#define USB_CH_IP_CUR_LVL_0P19 193 -#define USB_CH_IP_CUR_LVL_0P29 290 -#define USB_CH_IP_CUR_LVL_0P38 380 -#define USB_CH_IP_CUR_LVL_0P45 450 -#define USB_CH_IP_CUR_LVL_0P5 500 -#define USB_CH_IP_CUR_LVL_0P6 600 -#define USB_CH_IP_CUR_LVL_0P7 700 -#define USB_CH_IP_CUR_LVL_0P8 800 -#define USB_CH_IP_CUR_LVL_0P9 900 -#define USB_CH_IP_CUR_LVL_1P0 1000 -#define USB_CH_IP_CUR_LVL_1P1 1100 -#define USB_CH_IP_CUR_LVL_1P3 1300 -#define USB_CH_IP_CUR_LVL_1P4 1400 -#define USB_CH_IP_CUR_LVL_1P5 1500 - -#define VBAT_TRESH_IP_CUR_RED 3800 - -#define to_ab8500_charger_usb_device_info(x) container_of((x), \ - struct ab8500_charger, usb_chg) -#define to_ab8500_charger_ac_device_info(x) container_of((x), \ - struct ab8500_charger, ac_chg) - -/** - * struct ab8500_charger_interrupts - ab8500 interupts - * @name: name of the interrupt - * @isr function pointer to the isr - */ -struct ab8500_charger_interrupts { - char *name; - irqreturn_t (*isr)(int irq, void *data); -}; - -struct ab8500_charger_info { - int charger_connected; - int charger_online; - int charger_voltage; - int cv_active; - bool wd_expired; - int charger_current; -}; - -struct ab8500_charger_event_flags { - bool mainextchnotok; - bool main_thermal_prot; - bool usb_thermal_prot; - bool vbus_ovv; - bool usbchargernotok; - bool chgwdexp; - bool vbus_collapse; - bool vbus_drop_end; -}; - -struct ab8500_charger_usb_state { - int usb_current; - int usb_current_tmp; - enum ab8500_usb_state state; - enum ab8500_usb_state state_tmp; - spinlock_t usb_lock; -}; - -struct ab8500_charger_max_usb_in_curr { - int usb_type_max; - int set_max; - int calculated_max; -}; - -/** - * struct ab8500_charger - ab8500 Charger device information - * @dev: Pointer to the structure device - * @vbus_detected: VBUS detected - * @vbus_detected_start: - * VBUS detected during startup - * @ac_conn: This will be true when the AC charger has been plugged - * @vddadc_en_ac: Indicate if VDD ADC supply is enabled because AC - * charger is enabled - * @vddadc_en_usb: Indicate if VDD ADC supply is enabled because USB - * charger is enabled - * @vbat Battery voltage - * @old_vbat Previously measured battery voltage - * @usb_device_is_unrecognised USB device is unrecognised by the hardware - * @autopower Indicate if we should have automatic pwron after pwrloss - * @autopower_cfg platform specific power config support for "pwron after pwrloss" - * @invalid_charger_detect_state State when forcing AB to use invalid charger - * @is_aca_rid: Incicate if accessory is ACA type - * @current_stepping_sessions: - * Counter for current stepping sessions - * @parent: Pointer to the struct ab8500 - * @gpadc: Pointer to the struct gpadc - * @bm: Platform specific battery management information - * @flags: Structure for information about events triggered - * @usb_state: Structure for usb stack information - * @max_usb_in_curr: Max USB charger input current - * @ac_chg: AC charger power supply - * @usb_chg: USB charger power supply - * @ac: Structure that holds the AC charger properties - * @usb: Structure that holds the USB charger properties - * @regu: Pointer to the struct regulator - * @charger_wq: Work queue for the IRQs and checking HW state - * @usb_ipt_crnt_lock: Lock to protect VBUS input current setting from mutuals - * @pm_lock: Lock to prevent system to suspend - * @check_vbat_work Work for checking vbat threshold to adjust vbus current - * @check_hw_failure_work: Work for checking HW state - * @check_usbchgnotok_work: Work for checking USB charger not ok status - * @kick_wd_work: Work for kicking the charger watchdog in case - * of ABB rev 1.* due to the watchog logic bug - * @ac_charger_attached_work: Work for checking if AC charger is still - * connected - * @usb_charger_attached_work: Work for checking if USB charger is still - * connected - * @ac_work: Work for checking AC charger connection - * @detect_usb_type_work: Work for detecting the USB type connected - * @usb_link_status_work: Work for checking the new USB link status - * @usb_state_changed_work: Work for checking USB state - * @attach_work: Work for detecting USB type - * @vbus_drop_end_work: Work for detecting VBUS drop end - * @check_main_thermal_prot_work: - * Work for checking Main thermal status - * @check_usb_thermal_prot_work: - * Work for checking USB thermal status - * @charger_attached_mutex: For controlling the wakelock - */ -struct ab8500_charger { - struct device *dev; - bool vbus_detected; - bool vbus_detected_start; - bool ac_conn; - bool vddadc_en_ac; - bool vddadc_en_usb; - int vbat; - int old_vbat; - bool usb_device_is_unrecognised; - bool autopower; - bool autopower_cfg; - int invalid_charger_detect_state; - int is_aca_rid; - atomic_t current_stepping_sessions; - struct ab8500 *parent; - struct ab8500_gpadc *gpadc; - struct abx500_bm_data *bm; - struct ab8500_charger_event_flags flags; - struct ab8500_charger_usb_state usb_state; - struct ab8500_charger_max_usb_in_curr max_usb_in_curr; - struct ux500_charger ac_chg; - struct ux500_charger usb_chg; - struct ab8500_charger_info ac; - struct ab8500_charger_info usb; - struct regulator *regu; - struct workqueue_struct *charger_wq; - struct mutex usb_ipt_crnt_lock; - struct delayed_work check_vbat_work; - struct delayed_work check_hw_failure_work; - struct delayed_work check_usbchgnotok_work; - struct delayed_work kick_wd_work; - struct delayed_work usb_state_changed_work; - struct delayed_work attach_work; - struct delayed_work ac_charger_attached_work; - struct delayed_work usb_charger_attached_work; - struct delayed_work vbus_drop_end_work; - struct work_struct ac_work; - struct work_struct detect_usb_type_work; - struct work_struct usb_link_status_work; - struct work_struct check_main_thermal_prot_work; - struct work_struct check_usb_thermal_prot_work; - struct usb_phy *usb_phy; - struct notifier_block nb; - struct mutex charger_attached_mutex; -}; - -/* AC properties */ -static enum power_supply_property ab8500_charger_ac_props[] = { - POWER_SUPPLY_PROP_HEALTH, - POWER_SUPPLY_PROP_PRESENT, - POWER_SUPPLY_PROP_ONLINE, - POWER_SUPPLY_PROP_VOLTAGE_NOW, - POWER_SUPPLY_PROP_VOLTAGE_AVG, - POWER_SUPPLY_PROP_CURRENT_NOW, -}; - -/* USB properties */ -static enum power_supply_property ab8500_charger_usb_props[] = { - POWER_SUPPLY_PROP_HEALTH, - POWER_SUPPLY_PROP_CURRENT_AVG, - POWER_SUPPLY_PROP_PRESENT, - POWER_SUPPLY_PROP_ONLINE, - POWER_SUPPLY_PROP_VOLTAGE_NOW, - POWER_SUPPLY_PROP_VOLTAGE_AVG, - POWER_SUPPLY_PROP_CURRENT_NOW, -}; - -/* - * Function for enabling and disabling sw fallback mode - * should always be disabled when no charger is connected. - */ -static void ab8500_enable_disable_sw_fallback(struct ab8500_charger *di, - bool fallback) -{ - u8 val; - u8 reg; - u8 bank; - u8 bit; - int ret; - - dev_dbg(di->dev, "SW Fallback: %d\n", fallback); - - if (is_ab8500(di->parent)) { - bank = 0x15; - reg = 0x0; - bit = 3; - } else { - bank = AB8500_SYS_CTRL1_BLOCK; - reg = AB8500_SW_CONTROL_FALLBACK; - bit = 0; - } - - /* read the register containing fallback bit */ - ret = abx500_get_register_interruptible(di->dev, bank, reg, &val); - if (ret < 0) { - dev_err(di->dev, "%d read failed\n", __LINE__); - return; - } - - if (is_ab8500(di->parent)) { - /* enable the OPT emulation registers */ - ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x2); - if (ret) { - dev_err(di->dev, "%d write failed\n", __LINE__); - goto disable_otp; - } - } - - if (fallback) - val |= (1 << bit); - else - val &= ~(1 << bit); - - /* write back the changed fallback bit value to register */ - ret = abx500_set_register_interruptible(di->dev, bank, reg, val); - if (ret) { - dev_err(di->dev, "%d write failed\n", __LINE__); - } - -disable_otp: - if (is_ab8500(di->parent)) { - /* disable the set OTP registers again */ - ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x0); - if (ret) { - dev_err(di->dev, "%d write failed\n", __LINE__); - } - } -} - -/** - * ab8500_power_supply_changed - a wrapper with local extentions for - * power_supply_changed - * @di: pointer to the ab8500_charger structure - * @psy: pointer to power_supply_that have changed. - * - */ -static void ab8500_power_supply_changed(struct ab8500_charger *di, - struct power_supply *psy) -{ - if (di->autopower_cfg) { - if (!di->usb.charger_connected && - !di->ac.charger_connected && - di->autopower) { - di->autopower = false; - ab8500_enable_disable_sw_fallback(di, false); - } else if (!di->autopower && - (di->ac.charger_connected || - di->usb.charger_connected)) { - di->autopower = true; - ab8500_enable_disable_sw_fallback(di, true); - } - } - power_supply_changed(psy); -} - -static void ab8500_charger_set_usb_connected(struct ab8500_charger *di, - bool connected) -{ - if (connected != di->usb.charger_connected) { - dev_dbg(di->dev, "USB connected:%i\n", connected); - di->usb.charger_connected = connected; - - if (!connected) - di->flags.vbus_drop_end = false; - - sysfs_notify(&di->usb_chg.psy->dev.kobj, NULL, "present"); - - if (connected) { - mutex_lock(&di->charger_attached_mutex); - mutex_unlock(&di->charger_attached_mutex); - - if (is_ab8500(di->parent)) - queue_delayed_work(di->charger_wq, - &di->usb_charger_attached_work, - HZ); - } else { - cancel_delayed_work_sync(&di->usb_charger_attached_work); - mutex_lock(&di->charger_attached_mutex); - mutex_unlock(&di->charger_attached_mutex); - } - } -} - -/** - * ab8500_charger_get_ac_voltage() - get ac charger voltage - * @di: pointer to the ab8500_charger structure - * - * Returns ac charger voltage (on success) - */ -static int ab8500_charger_get_ac_voltage(struct ab8500_charger *di) -{ - int vch; - - /* Only measure voltage if the charger is connected */ - if (di->ac.charger_connected) { - vch = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_V); - if (vch < 0) - dev_err(di->dev, "%s gpadc conv failed,\n", __func__); - } else { - vch = 0; - } - return vch; -} - -/** - * ab8500_charger_ac_cv() - check if the main charger is in CV mode - * @di: pointer to the ab8500_charger structure - * - * Returns ac charger CV mode (on success) else error code - */ -static int ab8500_charger_ac_cv(struct ab8500_charger *di) -{ - u8 val; - int ret = 0; - - /* Only check CV mode if the charger is online */ - if (di->ac.charger_online) { - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_STATUS1_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return 0; - } - - if (val & MAIN_CH_CV_ON) - ret = 1; - else - ret = 0; - } - - return ret; -} - -/** - * ab8500_charger_get_vbus_voltage() - get vbus voltage - * @di: pointer to the ab8500_charger structure - * - * This function returns the vbus voltage. - * Returns vbus voltage (on success) - */ -static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di) -{ - int vch; - - /* Only measure voltage if the charger is connected */ - if (di->usb.charger_connected) { - vch = ab8500_gpadc_convert(di->gpadc, VBUS_V); - if (vch < 0) - dev_err(di->dev, "%s gpadc conv failed\n", __func__); - } else { - vch = 0; - } - return vch; -} - -/** - * ab8500_charger_get_usb_current() - get usb charger current - * @di: pointer to the ab8500_charger structure - * - * This function returns the usb charger current. - * Returns usb current (on success) and error code on failure - */ -static int ab8500_charger_get_usb_current(struct ab8500_charger *di) -{ - int ich; - - /* Only measure current if the charger is online */ - if (di->usb.charger_online) { - ich = ab8500_gpadc_convert(di->gpadc, USB_CHARGER_C); - if (ich < 0) - dev_err(di->dev, "%s gpadc conv failed\n", __func__); - } else { - ich = 0; - } - return ich; -} - -/** - * ab8500_charger_get_ac_current() - get ac charger current - * @di: pointer to the ab8500_charger structure - * - * This function returns the ac charger current. - * Returns ac current (on success) and error code on failure. - */ -static int ab8500_charger_get_ac_current(struct ab8500_charger *di) -{ - int ich; - - /* Only measure current if the charger is online */ - if (di->ac.charger_online) { - ich = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_C); - if (ich < 0) - dev_err(di->dev, "%s gpadc conv failed\n", __func__); - } else { - ich = 0; - } - return ich; -} - -/** - * ab8500_charger_usb_cv() - check if the usb charger is in CV mode - * @di: pointer to the ab8500_charger structure - * - * Returns ac charger CV mode (on success) else error code - */ -static int ab8500_charger_usb_cv(struct ab8500_charger *di) -{ - int ret; - u8 val; - - /* Only check CV mode if the charger is online */ - if (di->usb.charger_online) { - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_USBCH_STAT1_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return 0; - } - - if (val & USB_CH_CV_ON) - ret = 1; - else - ret = 0; - } else { - ret = 0; - } - - return ret; -} - -/** - * ab8500_charger_detect_chargers() - Detect the connected chargers - * @di: pointer to the ab8500_charger structure - * @probe: if probe, don't delay and wait for HW - * - * Returns the type of charger connected. - * For USB it will not mean we can actually charge from it - * but that there is a USB cable connected that we have to - * identify. This is used during startup when we don't get - * interrupts of the charger detection - * - * Returns an integer value, that means, - * NO_PW_CONN no power supply is connected - * AC_PW_CONN if the AC power supply is connected - * USB_PW_CONN if the USB power supply is connected - * AC_PW_CONN + USB_PW_CONN if USB and AC power supplies are both connected - */ -static int ab8500_charger_detect_chargers(struct ab8500_charger *di, bool probe) -{ - int result = NO_PW_CONN; - int ret; - u8 val; - - /* Check for AC charger */ - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_STATUS1_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return ret; - } - - if (val & MAIN_CH_DET) - result = AC_PW_CONN; - - /* Check for USB charger */ - - if (!probe) { - /* - * AB8500 says VBUS_DET_DBNC1 & VBUS_DET_DBNC100 - * when disconnecting ACA even though no - * charger was connected. Try waiting a little - * longer than the 100 ms of VBUS_DET_DBNC100... - */ - msleep(110); - } - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_USBCH_STAT1_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return ret; - } - dev_dbg(di->dev, - "%s AB8500_CH_USBCH_STAT1_REG %x\n", __func__, - val); - if ((val & VBUS_DET_DBNC1) && (val & VBUS_DET_DBNC100)) - result |= USB_PW_CONN; - - return result; -} - -/** - * ab8500_charger_max_usb_curr() - get the max curr for the USB type - * @di: pointer to the ab8500_charger structure - * @link_status: the identified USB type - * - * Get the maximum current that is allowed to be drawn from the host - * based on the USB type. - * Returns error code in case of failure else 0 on success - */ -static int ab8500_charger_max_usb_curr(struct ab8500_charger *di, - enum ab8500_charger_link_status link_status) -{ - int ret = 0; - - di->usb_device_is_unrecognised = false; - - /* - * Platform only supports USB 2.0. - * This means that charging current from USB source - * is maximum 500 mA. Every occurence of USB_STAT_*_HOST_* - * should set USB_CH_IP_CUR_LVL_0P5. - */ - - switch (link_status) { - case USB_STAT_STD_HOST_NC: - case USB_STAT_STD_HOST_C_NS: - case USB_STAT_STD_HOST_C_S: - dev_dbg(di->dev, "USB Type - Standard host is " - "detected through USB driver\n"); - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - di->is_aca_rid = 0; - break; - case USB_STAT_HOST_CHG_HS_CHIRP: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - di->is_aca_rid = 0; - break; - case USB_STAT_HOST_CHG_HS: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - di->is_aca_rid = 0; - break; - case USB_STAT_ACA_RID_C_HS: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P9; - di->is_aca_rid = 0; - break; - case USB_STAT_ACA_RID_A: - /* - * Dedicated charger level minus maximum current accessory - * can consume (900mA). Closest level is 500mA - */ - dev_dbg(di->dev, "USB_STAT_ACA_RID_A detected\n"); - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - di->is_aca_rid = 1; - break; - case USB_STAT_ACA_RID_B: - /* - * Dedicated charger level minus 120mA (20mA for ACA and - * 100mA for potential accessory). Closest level is 1300mA - */ - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P3; - dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status, - di->max_usb_in_curr.usb_type_max); - di->is_aca_rid = 1; - break; - case USB_STAT_HOST_CHG_NM: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - di->is_aca_rid = 0; - break; - case USB_STAT_DEDICATED_CHG: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5; - di->is_aca_rid = 0; - break; - case USB_STAT_ACA_RID_C_HS_CHIRP: - case USB_STAT_ACA_RID_C_NM: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5; - di->is_aca_rid = 1; - break; - case USB_STAT_NOT_CONFIGURED: - if (di->vbus_detected) { - di->usb_device_is_unrecognised = true; - dev_dbg(di->dev, "USB Type - Legacy charger.\n"); - di->max_usb_in_curr.usb_type_max = - USB_CH_IP_CUR_LVL_1P5; - break; - } - case USB_STAT_HM_IDGND: - dev_err(di->dev, "USB Type - Charging not allowed\n"); - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05; - ret = -ENXIO; - break; - case USB_STAT_RESERVED: - if (is_ab8500(di->parent)) { - di->flags.vbus_collapse = true; - dev_err(di->dev, "USB Type - USB_STAT_RESERVED " - "VBUS has collapsed\n"); - ret = -ENXIO; - break; - } else { - dev_dbg(di->dev, "USB Type - Charging not allowed\n"); - di->max_usb_in_curr.usb_type_max = - USB_CH_IP_CUR_LVL_0P05; - dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", - link_status, - di->max_usb_in_curr.usb_type_max); - ret = -ENXIO; - break; - } - case USB_STAT_CARKIT_1: - case USB_STAT_CARKIT_2: - case USB_STAT_ACA_DOCK_CHARGER: - case USB_STAT_CHARGER_LINE_1: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status, - di->max_usb_in_curr.usb_type_max); - break; - case USB_STAT_NOT_VALID_LINK: - dev_err(di->dev, "USB Type invalid - try charging anyway\n"); - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - break; - - default: - dev_err(di->dev, "USB Type - Unknown\n"); - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05; - ret = -ENXIO; - break; - }; - - di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max; - dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", - link_status, di->max_usb_in_curr.set_max); - - return ret; -} - -/** - * ab8500_charger_read_usb_type() - read the type of usb connected - * @di: pointer to the ab8500_charger structure - * - * Detect the type of the plugged USB - * Returns error code in case of failure else 0 on success - */ -static int ab8500_charger_read_usb_type(struct ab8500_charger *di) -{ - int ret; - u8 val; - - ret = abx500_get_register_interruptible(di->dev, - AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return ret; - } - if (is_ab8500(di->parent)) - ret = abx500_get_register_interruptible(di->dev, AB8500_USB, - AB8500_USB_LINE_STAT_REG, &val); - else - ret = abx500_get_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return ret; - } - - /* get the USB type */ - if (is_ab8500(di->parent)) - val = (val & AB8500_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT; - else - val = (val & AB8505_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT; - ret = ab8500_charger_max_usb_curr(di, - (enum ab8500_charger_link_status) val); - - return ret; -} - -/** - * ab8500_charger_detect_usb_type() - get the type of usb connected - * @di: pointer to the ab8500_charger structure - * - * Detect the type of the plugged USB - * Returns error code in case of failure else 0 on success - */ -static int ab8500_charger_detect_usb_type(struct ab8500_charger *di) -{ - int i, ret; - u8 val; - - /* - * On getting the VBUS rising edge detect interrupt there - * is a 250ms delay after which the register UsbLineStatus - * is filled with valid data. - */ - for (i = 0; i < 10; i++) { - msleep(250); - ret = abx500_get_register_interruptible(di->dev, - AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, - &val); - dev_dbg(di->dev, "%s AB8500_IT_SOURCE21_REG %x\n", - __func__, val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return ret; - } - - if (is_ab8500(di->parent)) - ret = abx500_get_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINE_STAT_REG, &val); - else - ret = abx500_get_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return ret; - } - dev_dbg(di->dev, "%s AB8500_USB_LINE_STAT_REG %x\n", __func__, - val); - /* - * Until the IT source register is read the UsbLineStatus - * register is not updated, hence doing the same - * Revisit this: - */ - - /* get the USB type */ - if (is_ab8500(di->parent)) - val = (val & AB8500_USB_LINK_STATUS) >> - USB_LINK_STATUS_SHIFT; - else - val = (val & AB8505_USB_LINK_STATUS) >> - USB_LINK_STATUS_SHIFT; - if (val) - break; - } - ret = ab8500_charger_max_usb_curr(di, - (enum ab8500_charger_link_status) val); - - return ret; -} - -/* - * This array maps the raw hex value to charger voltage used by the AB8500 - * Values taken from the UM0836 - */ -static int ab8500_charger_voltage_map[] = { - 3500 , - 3525 , - 3550 , - 3575 , - 3600 , - 3625 , - 3650 , - 3675 , - 3700 , - 3725 , - 3750 , - 3775 , - 3800 , - 3825 , - 3850 , - 3875 , - 3900 , - 3925 , - 3950 , - 3975 , - 4000 , - 4025 , - 4050 , - 4060 , - 4070 , - 4080 , - 4090 , - 4100 , - 4110 , - 4120 , - 4130 , - 4140 , - 4150 , - 4160 , - 4170 , - 4180 , - 4190 , - 4200 , - 4210 , - 4220 , - 4230 , - 4240 , - 4250 , - 4260 , - 4270 , - 4280 , - 4290 , - 4300 , - 4310 , - 4320 , - 4330 , - 4340 , - 4350 , - 4360 , - 4370 , - 4380 , - 4390 , - 4400 , - 4410 , - 4420 , - 4430 , - 4440 , - 4450 , - 4460 , - 4470 , - 4480 , - 4490 , - 4500 , - 4510 , - 4520 , - 4530 , - 4540 , - 4550 , - 4560 , - 4570 , - 4580 , - 4590 , - 4600 , -}; - -static int ab8500_voltage_to_regval(int voltage) -{ - int i; - - /* Special case for voltage below 3.5V */ - if (voltage < ab8500_charger_voltage_map[0]) - return LOW_VOLT_REG; - - for (i = 1; i < ARRAY_SIZE(ab8500_charger_voltage_map); i++) { - if (voltage < ab8500_charger_voltage_map[i]) - return i - 1; - } - - /* If not last element, return error */ - i = ARRAY_SIZE(ab8500_charger_voltage_map) - 1; - if (voltage == ab8500_charger_voltage_map[i]) - return i; - else - return -1; -} - -static int ab8500_current_to_regval(struct ab8500_charger *di, int curr) -{ - int i; - - if (curr < di->bm->chg_output_curr[0]) - return 0; - - for (i = 0; i < di->bm->n_chg_out_curr; i++) { - if (curr < di->bm->chg_output_curr[i]) - return i - 1; - } - - /* If not last element, return error */ - i = di->bm->n_chg_out_curr - 1; - if (curr == di->bm->chg_output_curr[i]) - return i; - else - return -1; -} - -static int ab8500_vbus_in_curr_to_regval(struct ab8500_charger *di, int curr) -{ - int i; - - if (curr < di->bm->chg_input_curr[0]) - return 0; - - for (i = 0; i < di->bm->n_chg_in_curr; i++) { - if (curr < di->bm->chg_input_curr[i]) - return i - 1; - } - - /* If not last element, return error */ - i = di->bm->n_chg_in_curr - 1; - if (curr == di->bm->chg_input_curr[i]) - return i; - else - return -1; -} - -/** - * ab8500_charger_get_usb_cur() - get usb current - * @di: pointer to the ab8500_charger structre - * - * The usb stack provides the maximum current that can be drawn from - * the standard usb host. This will be in mA. - * This function converts current in mA to a value that can be written - * to the register. Returns -1 if charging is not allowed - */ -static int ab8500_charger_get_usb_cur(struct ab8500_charger *di) -{ - int ret = 0; - switch (di->usb_state.usb_current) { - case 100: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P09; - break; - case 200: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P19; - break; - case 300: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P29; - break; - case 400: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P38; - break; - case 500: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; - break; - default: - di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05; - ret = -EPERM; - break; - }; - di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max; - return ret; -} - -/** - * ab8500_charger_check_continue_stepping() - Check to allow stepping - * @di: pointer to the ab8500_charger structure - * @reg: select what charger register to check - * - * Check if current stepping should be allowed to continue. - * Checks if charger source has not collapsed. If it has, further stepping - * is not allowed. - */ -static bool ab8500_charger_check_continue_stepping(struct ab8500_charger *di, - int reg) -{ - if (reg == AB8500_USBCH_IPT_CRNTLVL_REG) - return !di->flags.vbus_drop_end; - else - return true; -} - -/** - * ab8500_charger_set_current() - set charger current - * @di: pointer to the ab8500_charger structure - * @ich: charger current, in mA - * @reg: select what charger register to set - * - * Set charger current. - * There is no state machine in the AB to step up/down the charger - * current to avoid dips and spikes on MAIN, VBUS and VBAT when - * charging is started. Instead we need to implement - * this charger current step-up/down here. - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_set_current(struct ab8500_charger *di, - int ich, int reg) -{ - int ret = 0; - int curr_index, prev_curr_index, shift_value, i; - u8 reg_value; - u32 step_udelay; - bool no_stepping = false; - - atomic_inc(&di->current_stepping_sessions); - - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - reg, ®_value); - if (ret < 0) { - dev_err(di->dev, "%s read failed\n", __func__); - goto exit_set_current; - } - - switch (reg) { - case AB8500_MCH_IPT_CURLVL_REG: - shift_value = MAIN_CH_INPUT_CURR_SHIFT; - prev_curr_index = (reg_value >> shift_value); - curr_index = ab8500_current_to_regval(di, ich); - step_udelay = STEP_UDELAY; - if (!di->ac.charger_connected) - no_stepping = true; - break; - case AB8500_USBCH_IPT_CRNTLVL_REG: - if (is_ab8540(di->parent)) - shift_value = AB8540_VBUS_IN_CURR_LIM_SHIFT; - else - shift_value = VBUS_IN_CURR_LIM_SHIFT; - prev_curr_index = (reg_value >> shift_value); - curr_index = ab8500_vbus_in_curr_to_regval(di, ich); - step_udelay = STEP_UDELAY * 100; - - if (!di->usb.charger_connected) - no_stepping = true; - break; - case AB8500_CH_OPT_CRNTLVL_REG: - shift_value = 0; - prev_curr_index = (reg_value >> shift_value); - curr_index = ab8500_current_to_regval(di, ich); - step_udelay = STEP_UDELAY; - if (curr_index && (curr_index - prev_curr_index) > 1) - step_udelay *= 100; - - if (!di->usb.charger_connected && !di->ac.charger_connected) - no_stepping = true; - - break; - default: - dev_err(di->dev, "%s current register not valid\n", __func__); - ret = -ENXIO; - goto exit_set_current; - } - - if (curr_index < 0) { - dev_err(di->dev, "requested current limit out-of-range\n"); - ret = -ENXIO; - goto exit_set_current; - } - - /* only update current if it's been changed */ - if (prev_curr_index == curr_index) { - dev_dbg(di->dev, "%s current not changed for reg: 0x%02x\n", - __func__, reg); - ret = 0; - goto exit_set_current; - } - - dev_dbg(di->dev, "%s set charger current: %d mA for reg: 0x%02x\n", - __func__, ich, reg); - - if (no_stepping) { - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - reg, (u8)curr_index << shift_value); - if (ret) - dev_err(di->dev, "%s write failed\n", __func__); - } else if (prev_curr_index > curr_index) { - for (i = prev_curr_index - 1; i >= curr_index; i--) { - dev_dbg(di->dev, "curr change_1 to: %x for 0x%02x\n", - (u8) i << shift_value, reg); - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, reg, (u8)i << shift_value); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - goto exit_set_current; - } - if (i != curr_index) - usleep_range(step_udelay, step_udelay * 2); - } - } else { - bool allow = true; - for (i = prev_curr_index + 1; i <= curr_index && allow; i++) { - dev_dbg(di->dev, "curr change_2 to: %x for 0x%02x\n", - (u8)i << shift_value, reg); - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, reg, (u8)i << shift_value); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - goto exit_set_current; - } - if (i != curr_index) - usleep_range(step_udelay, step_udelay * 2); - - allow = ab8500_charger_check_continue_stepping(di, reg); - } - } - -exit_set_current: - atomic_dec(&di->current_stepping_sessions); - - return ret; -} - -/** - * ab8500_charger_set_vbus_in_curr() - set VBUS input current limit - * @di: pointer to the ab8500_charger structure - * @ich_in: charger input current limit - * - * Sets the current that can be drawn from the USB host - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_set_vbus_in_curr(struct ab8500_charger *di, - int ich_in) -{ - int min_value; - int ret; - - /* We should always use to lowest current limit */ - min_value = min(di->bm->chg_params->usb_curr_max, ich_in); - if (di->max_usb_in_curr.set_max > 0) - min_value = min(di->max_usb_in_curr.set_max, min_value); - - if (di->usb_state.usb_current >= 0) - min_value = min(di->usb_state.usb_current, min_value); - - switch (min_value) { - case 100: - if (di->vbat < VBAT_TRESH_IP_CUR_RED) - min_value = USB_CH_IP_CUR_LVL_0P05; - break; - case 500: - if (di->vbat < VBAT_TRESH_IP_CUR_RED) - min_value = USB_CH_IP_CUR_LVL_0P45; - break; - default: - break; - } - - dev_info(di->dev, "VBUS input current limit set to %d mA\n", min_value); - - mutex_lock(&di->usb_ipt_crnt_lock); - ret = ab8500_charger_set_current(di, min_value, - AB8500_USBCH_IPT_CRNTLVL_REG); - mutex_unlock(&di->usb_ipt_crnt_lock); - - return ret; -} - -/** - * ab8500_charger_set_main_in_curr() - set main charger input current - * @di: pointer to the ab8500_charger structure - * @ich_in: input charger current, in mA - * - * Set main charger input current. - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_set_main_in_curr(struct ab8500_charger *di, - int ich_in) -{ - return ab8500_charger_set_current(di, ich_in, - AB8500_MCH_IPT_CURLVL_REG); -} - -/** - * ab8500_charger_set_output_curr() - set charger output current - * @di: pointer to the ab8500_charger structure - * @ich_out: output charger current, in mA - * - * Set charger output current. - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_set_output_curr(struct ab8500_charger *di, - int ich_out) -{ - return ab8500_charger_set_current(di, ich_out, - AB8500_CH_OPT_CRNTLVL_REG); -} - -/** - * ab8500_charger_led_en() - turn on/off chargign led - * @di: pointer to the ab8500_charger structure - * @on: flag to turn on/off the chargign led - * - * Power ON/OFF charging LED indication - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_led_en(struct ab8500_charger *di, int on) -{ - int ret; - - if (on) { - /* Power ON charging LED indicator, set LED current to 5mA */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_LED_INDICATOR_PWM_CTRL, - (LED_IND_CUR_5MA | LED_INDICATOR_PWM_ENA)); - if (ret) { - dev_err(di->dev, "Power ON LED failed\n"); - return ret; - } - /* LED indicator PWM duty cycle 252/256 */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_LED_INDICATOR_PWM_DUTY, - LED_INDICATOR_PWM_DUTY_252_256); - if (ret) { - dev_err(di->dev, "Set LED PWM duty cycle failed\n"); - return ret; - } - } else { - /* Power off charging LED indicator */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_LED_INDICATOR_PWM_CTRL, - LED_INDICATOR_PWM_DIS); - if (ret) { - dev_err(di->dev, "Power-off LED failed\n"); - return ret; - } - } - - return ret; -} - -/** - * ab8500_charger_ac_en() - enable or disable ac charging - * @di: pointer to the ab8500_charger structure - * @enable: enable/disable flag - * @vset: charging voltage - * @iset: charging current - * - * Enable/Disable AC/Mains charging and turns on/off the charging led - * respectively. - **/ -static int ab8500_charger_ac_en(struct ux500_charger *charger, - int enable, int vset, int iset) -{ - int ret; - int volt_index; - int curr_index; - int input_curr_index; - u8 overshoot = 0; - - struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger); - - if (enable) { - /* Check if AC is connected */ - if (!di->ac.charger_connected) { - dev_err(di->dev, "AC charger not connected\n"); - return -ENXIO; - } - - /* Enable AC charging */ - dev_dbg(di->dev, "Enable AC: %dmV %dmA\n", vset, iset); - - /* - * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts - * will be triggered everytime we enable the VDD ADC supply. - * This will turn off charging for a short while. - * It can be avoided by having the supply on when - * there is a charger enabled. Normally the VDD ADC supply - * is enabled everytime a GPADC conversion is triggered. We will - * force it to be enabled from this driver to have - * the GPADC module independant of the AB8500 chargers - */ - if (!di->vddadc_en_ac) { - ret = regulator_enable(di->regu); - if (ret) - dev_warn(di->dev, - "Failed to enable regulator\n"); - else - di->vddadc_en_ac = true; - } - - /* Check if the requested voltage or current is valid */ - volt_index = ab8500_voltage_to_regval(vset); - curr_index = ab8500_current_to_regval(di, iset); - input_curr_index = ab8500_current_to_regval(di, - di->bm->chg_params->ac_curr_max); - if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) { - dev_err(di->dev, - "Charger voltage or current too high, " - "charging not started\n"); - return -ENXIO; - } - - /* ChVoltLevel: maximum battery charging voltage */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_VOLT_LVL_REG, (u8) volt_index); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - /* MainChInputCurr: current that can be drawn from the charger*/ - ret = ab8500_charger_set_main_in_curr(di, - di->bm->chg_params->ac_curr_max); - if (ret) { - dev_err(di->dev, "%s Failed to set MainChInputCurr\n", - __func__); - return ret; - } - /* ChOutputCurentLevel: protected output current */ - ret = ab8500_charger_set_output_curr(di, iset); - if (ret) { - dev_err(di->dev, "%s " - "Failed to set ChOutputCurentLevel\n", - __func__); - return ret; - } - - /* Check if VBAT overshoot control should be enabled */ - if (!di->bm->enable_overshoot) - overshoot = MAIN_CH_NO_OVERSHOOT_ENA_N; - - /* Enable Main Charger */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_MCH_CTRL1, MAIN_CH_ENA | overshoot); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - - /* Power on charging LED indication */ - ret = ab8500_charger_led_en(di, true); - if (ret < 0) - dev_err(di->dev, "failed to enable LED\n"); - - di->ac.charger_online = 1; - } else { - /* Disable AC charging */ - if (is_ab8500_1p1_or_earlier(di->parent)) { - /* - * For ABB revision 1.0 and 1.1 there is a bug in the - * watchdog logic. That means we have to continously - * kick the charger watchdog even when no charger is - * connected. This is only valid once the AC charger - * has been enabled. This is a bug that is not handled - * by the algorithm and the watchdog have to be kicked - * by the charger driver when the AC charger - * is disabled - */ - if (di->ac_conn) { - queue_delayed_work(di->charger_wq, - &di->kick_wd_work, - round_jiffies(WD_KICK_INTERVAL)); - } - - /* - * We can't turn off charging completely - * due to a bug in AB8500 cut1. - * If we do, charging will not start again. - * That is why we set the lowest voltage - * and current possible - */ - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_CH_VOLT_LVL_REG, CH_VOL_LVL_3P5); - if (ret) { - dev_err(di->dev, - "%s write failed\n", __func__); - return ret; - } - - ret = ab8500_charger_set_output_curr(di, 0); - if (ret) { - dev_err(di->dev, "%s " - "Failed to set ChOutputCurentLevel\n", - __func__); - return ret; - } - } else { - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_MCH_CTRL1, 0); - if (ret) { - dev_err(di->dev, - "%s write failed\n", __func__); - return ret; - } - } - - ret = ab8500_charger_led_en(di, false); - if (ret < 0) - dev_err(di->dev, "failed to disable LED\n"); - - di->ac.charger_online = 0; - di->ac.wd_expired = false; - - /* Disable regulator if enabled */ - if (di->vddadc_en_ac) { - regulator_disable(di->regu); - di->vddadc_en_ac = false; - } - - dev_dbg(di->dev, "%s Disabled AC charging\n", __func__); - } - ab8500_power_supply_changed(di, di->ac_chg.psy); - - return ret; -} - -/** - * ab8500_charger_usb_en() - enable usb charging - * @di: pointer to the ab8500_charger structure - * @enable: enable/disable flag - * @vset: charging voltage - * @ich_out: charger output current - * - * Enable/Disable USB charging and turns on/off the charging led respectively. - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_usb_en(struct ux500_charger *charger, - int enable, int vset, int ich_out) -{ - int ret; - int volt_index; - int curr_index; - u8 overshoot = 0; - - struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger); - - if (enable) { - /* Check if USB is connected */ - if (!di->usb.charger_connected) { - dev_err(di->dev, "USB charger not connected\n"); - return -ENXIO; - } - - /* - * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts - * will be triggered everytime we enable the VDD ADC supply. - * This will turn off charging for a short while. - * It can be avoided by having the supply on when - * there is a charger enabled. Normally the VDD ADC supply - * is enabled everytime a GPADC conversion is triggered. We will - * force it to be enabled from this driver to have - * the GPADC module independant of the AB8500 chargers - */ - if (!di->vddadc_en_usb) { - ret = regulator_enable(di->regu); - if (ret) - dev_warn(di->dev, - "Failed to enable regulator\n"); - else - di->vddadc_en_usb = true; - } - - /* Enable USB charging */ - dev_dbg(di->dev, "Enable USB: %dmV %dmA\n", vset, ich_out); - - /* Check if the requested voltage or current is valid */ - volt_index = ab8500_voltage_to_regval(vset); - curr_index = ab8500_current_to_regval(di, ich_out); - if (volt_index < 0 || curr_index < 0) { - dev_err(di->dev, - "Charger voltage or current too high, " - "charging not started\n"); - return -ENXIO; - } - - /* ChVoltLevel: max voltage upto which battery can be charged */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_VOLT_LVL_REG, (u8) volt_index); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - /* Check if VBAT overshoot control should be enabled */ - if (!di->bm->enable_overshoot) - overshoot = USB_CHG_NO_OVERSHOOT_ENA_N; - - /* Enable USB Charger */ - dev_dbg(di->dev, - "Enabling USB with write to AB8500_USBCH_CTRL1_REG\n"); - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_USBCH_CTRL1_REG, USB_CH_ENA | overshoot); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - - /* If success power on charging LED indication */ - ret = ab8500_charger_led_en(di, true); - if (ret < 0) - dev_err(di->dev, "failed to enable LED\n"); - - di->usb.charger_online = 1; - - /* USBChInputCurr: current that can be drawn from the usb */ - ret = ab8500_charger_set_vbus_in_curr(di, - di->max_usb_in_curr.usb_type_max); - if (ret) { - dev_err(di->dev, "setting USBChInputCurr failed\n"); - return ret; - } - - /* ChOutputCurentLevel: protected output current */ - ret = ab8500_charger_set_output_curr(di, ich_out); - if (ret) { - dev_err(di->dev, "%s " - "Failed to set ChOutputCurentLevel\n", - __func__); - return ret; - } - - queue_delayed_work(di->charger_wq, &di->check_vbat_work, HZ); - - } else { - /* Disable USB charging */ - dev_dbg(di->dev, "%s Disabled USB charging\n", __func__); - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_USBCH_CTRL1_REG, 0); - if (ret) { - dev_err(di->dev, - "%s write failed\n", __func__); - return ret; - } - - ret = ab8500_charger_led_en(di, false); - if (ret < 0) - dev_err(di->dev, "failed to disable LED\n"); - /* USBChInputCurr: current that can be drawn from the usb */ - ret = ab8500_charger_set_vbus_in_curr(di, 0); - if (ret) { - dev_err(di->dev, "setting USBChInputCurr failed\n"); - return ret; - } - - /* ChOutputCurentLevel: protected output current */ - ret = ab8500_charger_set_output_curr(di, 0); - if (ret) { - dev_err(di->dev, "%s " - "Failed to reset ChOutputCurentLevel\n", - __func__); - return ret; - } - di->usb.charger_online = 0; - di->usb.wd_expired = false; - - /* Disable regulator if enabled */ - if (di->vddadc_en_usb) { - regulator_disable(di->regu); - di->vddadc_en_usb = false; - } - - dev_dbg(di->dev, "%s Disabled USB charging\n", __func__); - - /* Cancel any pending Vbat check work */ - cancel_delayed_work(&di->check_vbat_work); - - } - ab8500_power_supply_changed(di, di->usb_chg.psy); - - return ret; -} - -static int ab8500_external_charger_prepare(struct notifier_block *charger_nb, - unsigned long event, void *data) -{ - int ret; - struct device *dev = data; - /*Toggle External charger control pin*/ - ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK, - AB8500_SYS_CHARGER_CONTROL_REG, - EXTERNAL_CHARGER_DISABLE_REG_VAL); - if (ret < 0) { - dev_err(dev, "write reg failed %d\n", ret); - goto out; - } - ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK, - AB8500_SYS_CHARGER_CONTROL_REG, - EXTERNAL_CHARGER_ENABLE_REG_VAL); - if (ret < 0) - dev_err(dev, "Write reg failed %d\n", ret); - -out: - return ret; -} - -/** - * ab8500_charger_usb_check_enable() - enable usb charging - * @charger: pointer to the ux500_charger structure - * @vset: charging voltage - * @iset: charger output current - * - * Check if the VBUS charger has been disconnected and reconnected without - * AB8500 rising an interrupt. Returns 0 on success. - */ -static int ab8500_charger_usb_check_enable(struct ux500_charger *charger, - int vset, int iset) -{ - u8 usbch_ctrl1 = 0; - int ret = 0; - - struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger); - - if (!di->usb.charger_connected) - return ret; - - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_USBCH_CTRL1_REG, &usbch_ctrl1); - if (ret < 0) { - dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); - return ret; - } - dev_dbg(di->dev, "USB charger ctrl: 0x%02x\n", usbch_ctrl1); - - if (!(usbch_ctrl1 & USB_CH_ENA)) { - dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n"); - - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CHARGER_CTRL, - DROP_COUNT_RESET, DROP_COUNT_RESET); - if (ret < 0) { - dev_err(di->dev, "ab8500 write failed %d\n", __LINE__); - return ret; - } - - ret = ab8500_charger_usb_en(&di->usb_chg, true, vset, iset); - if (ret < 0) { - dev_err(di->dev, "Failed to enable VBUS charger %d\n", - __LINE__); - return ret; - } - } - return ret; -} - -/** - * ab8500_charger_ac_check_enable() - enable usb charging - * @charger: pointer to the ux500_charger structure - * @vset: charging voltage - * @iset: charger output current - * - * Check if the AC charger has been disconnected and reconnected without - * AB8500 rising an interrupt. Returns 0 on success. - */ -static int ab8500_charger_ac_check_enable(struct ux500_charger *charger, - int vset, int iset) -{ - u8 mainch_ctrl1 = 0; - int ret = 0; - - struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger); - - if (!di->ac.charger_connected) - return ret; - - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_MCH_CTRL1, &mainch_ctrl1); - if (ret < 0) { - dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); - return ret; - } - dev_dbg(di->dev, "AC charger ctrl: 0x%02x\n", mainch_ctrl1); - - if (!(mainch_ctrl1 & MAIN_CH_ENA)) { - dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n"); - - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CHARGER_CTRL, - DROP_COUNT_RESET, DROP_COUNT_RESET); - - if (ret < 0) { - dev_err(di->dev, "ab8500 write failed %d\n", __LINE__); - return ret; - } - - ret = ab8500_charger_ac_en(&di->usb_chg, true, vset, iset); - if (ret < 0) { - dev_err(di->dev, "failed to enable AC charger %d\n", - __LINE__); - return ret; - } - } - return ret; -} - -/** - * ab8500_charger_watchdog_kick() - kick charger watchdog - * @di: pointer to the ab8500_charger structure - * - * Kick charger watchdog - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_watchdog_kick(struct ux500_charger *charger) -{ - int ret; - struct ab8500_charger *di; - - if (charger->psy->desc->type == POWER_SUPPLY_TYPE_MAINS) - di = to_ab8500_charger_ac_device_info(charger); - else if (charger->psy->desc->type == POWER_SUPPLY_TYPE_USB) - di = to_ab8500_charger_usb_device_info(charger); - else - return -ENXIO; - - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); - if (ret) - dev_err(di->dev, "Failed to kick WD!\n"); - - return ret; -} - -/** - * ab8500_charger_update_charger_current() - update charger current - * @di: pointer to the ab8500_charger structure - * - * Update the charger output current for the specified charger - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_update_charger_current(struct ux500_charger *charger, - int ich_out) -{ - int ret; - struct ab8500_charger *di; - - if (charger->psy->desc->type == POWER_SUPPLY_TYPE_MAINS) - di = to_ab8500_charger_ac_device_info(charger); - else if (charger->psy->desc->type == POWER_SUPPLY_TYPE_USB) - di = to_ab8500_charger_usb_device_info(charger); - else - return -ENXIO; - - ret = ab8500_charger_set_output_curr(di, ich_out); - if (ret) { - dev_err(di->dev, "%s " - "Failed to set ChOutputCurentLevel\n", - __func__); - return ret; - } - - /* Reset the main and usb drop input current measurement counter */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CHARGER_CTRL, DROP_COUNT_RESET); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - - return ret; -} - -/** - * ab8540_charger_power_path_enable() - enable usb power path mode - * @charger: pointer to the ux500_charger structure - * @enable: enable/disable flag - * - * Enable or disable the power path for usb mode - * Returns error code in case of failure else 0(on success) - */ -static int ab8540_charger_power_path_enable(struct ux500_charger *charger, - bool enable) -{ - int ret; - struct ab8500_charger *di; - - if (charger->psy->desc->type == POWER_SUPPLY_TYPE_USB) - di = to_ab8500_charger_usb_device_info(charger); - else - return -ENXIO; - - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8540_USB_PP_MODE_REG, - BUS_POWER_PATH_MODE_ENA, enable); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - - return ret; -} - - -/** - * ab8540_charger_usb_pre_chg_enable() - enable usb pre change - * @charger: pointer to the ux500_charger structure - * @enable: enable/disable flag - * - * Enable or disable the pre-chage for usb mode - * Returns error code in case of failure else 0(on success) - */ -static int ab8540_charger_usb_pre_chg_enable(struct ux500_charger *charger, - bool enable) -{ - int ret; - struct ab8500_charger *di; - - if (charger->psy->desc->type == POWER_SUPPLY_TYPE_USB) - di = to_ab8500_charger_usb_device_info(charger); - else - return -ENXIO; - - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8540_USB_PP_CHR_REG, - BUS_POWER_PATH_PRECHG_ENA, enable); - if (ret) { - dev_err(di->dev, "%s write failed\n", __func__); - return ret; - } - - return ret; -} - -static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data) -{ - struct power_supply *psy; - struct power_supply *ext = dev_get_drvdata(dev); - const char **supplicants = (const char **)ext->supplied_to; - struct ab8500_charger *di; - union power_supply_propval ret; - int j; - struct ux500_charger *usb_chg; - - usb_chg = (struct ux500_charger *)data; - psy = usb_chg->psy; - - di = to_ab8500_charger_usb_device_info(usb_chg); - - /* For all psy where the driver name appears in any supplied_to */ - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); - if (j < 0) - return 0; - - /* Go through all properties for the psy */ - for (j = 0; j < ext->desc->num_properties; j++) { - enum power_supply_property prop; - prop = ext->desc->properties[j]; - - if (power_supply_get_property(ext, prop, &ret)) - continue; - - switch (prop) { - case POWER_SUPPLY_PROP_VOLTAGE_NOW: - switch (ext->desc->type) { - case POWER_SUPPLY_TYPE_BATTERY: - di->vbat = ret.intval / 1000; - break; - default: - break; - } - break; - default: - break; - } - } - return 0; -} - -/** - * ab8500_charger_check_vbat_work() - keep vbus current within spec - * @work pointer to the work_struct structure - * - * Due to a asic bug it is necessary to lower the input current to the vbus - * charger when charging with at some specific levels. This issue is only valid - * for below a certain battery voltage. This function makes sure that the - * the allowed current limit isn't exceeded. - */ -static void ab8500_charger_check_vbat_work(struct work_struct *work) -{ - int t = 10; - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, check_vbat_work.work); - - class_for_each_device(power_supply_class, NULL, - di->usb_chg.psy, ab8500_charger_get_ext_psy_data); - - /* First run old_vbat is 0. */ - if (di->old_vbat == 0) - di->old_vbat = di->vbat; - - if (!((di->old_vbat <= VBAT_TRESH_IP_CUR_RED && - di->vbat <= VBAT_TRESH_IP_CUR_RED) || - (di->old_vbat > VBAT_TRESH_IP_CUR_RED && - di->vbat > VBAT_TRESH_IP_CUR_RED))) { - - dev_dbg(di->dev, "Vbat did cross threshold, curr: %d, new: %d," - " old: %d\n", di->max_usb_in_curr.usb_type_max, - di->vbat, di->old_vbat); - ab8500_charger_set_vbus_in_curr(di, - di->max_usb_in_curr.usb_type_max); - power_supply_changed(di->usb_chg.psy); - } - - di->old_vbat = di->vbat; - - /* - * No need to check the battery voltage every second when not close to - * the threshold. - */ - if (di->vbat < (VBAT_TRESH_IP_CUR_RED + 100) && - (di->vbat > (VBAT_TRESH_IP_CUR_RED - 100))) - t = 1; - - queue_delayed_work(di->charger_wq, &di->check_vbat_work, t * HZ); -} - -/** - * ab8500_charger_check_hw_failure_work() - check main charger failure - * @work: pointer to the work_struct structure - * - * Work queue function for checking the main charger status - */ -static void ab8500_charger_check_hw_failure_work(struct work_struct *work) -{ - int ret; - u8 reg_value; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, check_hw_failure_work.work); - - /* Check if the status bits for HW failure is still active */ - if (di->flags.mainextchnotok) { - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return; - } - if (!(reg_value & MAIN_CH_NOK)) { - di->flags.mainextchnotok = false; - ab8500_power_supply_changed(di, di->ac_chg.psy); - } - } - if (di->flags.vbus_ovv) { - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, - ®_value); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return; - } - if (!(reg_value & VBUS_OVV_TH)) { - di->flags.vbus_ovv = false; - ab8500_power_supply_changed(di, di->usb_chg.psy); - } - } - /* If we still have a failure, schedule a new check */ - if (di->flags.mainextchnotok || di->flags.vbus_ovv) { - queue_delayed_work(di->charger_wq, - &di->check_hw_failure_work, round_jiffies(HZ)); - } -} - -/** - * ab8500_charger_kick_watchdog_work() - kick the watchdog - * @work: pointer to the work_struct structure - * - * Work queue function for kicking the charger watchdog. - * - * For ABB revision 1.0 and 1.1 there is a bug in the watchdog - * logic. That means we have to continously kick the charger - * watchdog even when no charger is connected. This is only - * valid once the AC charger has been enabled. This is - * a bug that is not handled by the algorithm and the - * watchdog have to be kicked by the charger driver - * when the AC charger is disabled - */ -static void ab8500_charger_kick_watchdog_work(struct work_struct *work) -{ - int ret; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, kick_wd_work.work); - - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); - if (ret) - dev_err(di->dev, "Failed to kick WD!\n"); - - /* Schedule a new watchdog kick */ - queue_delayed_work(di->charger_wq, - &di->kick_wd_work, round_jiffies(WD_KICK_INTERVAL)); -} - -/** - * ab8500_charger_ac_work() - work to get and set main charger status - * @work: pointer to the work_struct structure - * - * Work queue function for checking the main charger status - */ -static void ab8500_charger_ac_work(struct work_struct *work) -{ - int ret; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, ac_work); - - /* - * Since we can't be sure that the events are received - * synchronously, we have the check if the main charger is - * connected by reading the status register - */ - ret = ab8500_charger_detect_chargers(di, false); - if (ret < 0) - return; - - if (ret & AC_PW_CONN) { - di->ac.charger_connected = 1; - di->ac_conn = true; - } else { - di->ac.charger_connected = 0; - } - - ab8500_power_supply_changed(di, di->ac_chg.psy); - sysfs_notify(&di->ac_chg.psy->dev.kobj, NULL, "present"); -} - -static void ab8500_charger_usb_attached_work(struct work_struct *work) -{ - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, - usb_charger_attached_work.work); - int usbch = (USB_CH_VBUSDROP | USB_CH_VBUSDETDBNC); - int ret, i; - u8 statval; - - for (i = 0; i < 10; i++) { - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_CH_USBCH_STAT1_REG, - &statval); - if (ret < 0) { - dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); - goto reschedule; - } - if ((statval & usbch) != usbch) - goto reschedule; - - msleep(CHARGER_STATUS_POLL); - } - - ab8500_charger_usb_en(&di->usb_chg, 0, 0, 0); - - mutex_lock(&di->charger_attached_mutex); - mutex_unlock(&di->charger_attached_mutex); - - return; - -reschedule: - queue_delayed_work(di->charger_wq, - &di->usb_charger_attached_work, - HZ); -} - -static void ab8500_charger_ac_attached_work(struct work_struct *work) -{ - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, - ac_charger_attached_work.work); - int mainch = (MAIN_CH_STATUS2_MAINCHGDROP | - MAIN_CH_STATUS2_MAINCHARGERDETDBNC); - int ret, i; - u8 statval; - - for (i = 0; i < 10; i++) { - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_CH_STATUS2_REG, - &statval); - if (ret < 0) { - dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); - goto reschedule; - } - - if ((statval & mainch) != mainch) - goto reschedule; - - msleep(CHARGER_STATUS_POLL); - } - - ab8500_charger_ac_en(&di->ac_chg, 0, 0, 0); - queue_work(di->charger_wq, &di->ac_work); - - mutex_lock(&di->charger_attached_mutex); - mutex_unlock(&di->charger_attached_mutex); - - return; - -reschedule: - queue_delayed_work(di->charger_wq, - &di->ac_charger_attached_work, - HZ); -} - -/** - * ab8500_charger_detect_usb_type_work() - work to detect USB type - * @work: Pointer to the work_struct structure - * - * Detect the type of USB plugged - */ -static void ab8500_charger_detect_usb_type_work(struct work_struct *work) -{ - int ret; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, detect_usb_type_work); - - /* - * Since we can't be sure that the events are received - * synchronously, we have the check if is - * connected by reading the status register - */ - ret = ab8500_charger_detect_chargers(di, false); - if (ret < 0) - return; - - if (!(ret & USB_PW_CONN)) { - dev_dbg(di->dev, "%s di->vbus_detected = false\n", __func__); - di->vbus_detected = false; - ab8500_charger_set_usb_connected(di, false); - ab8500_power_supply_changed(di, di->usb_chg.psy); - } else { - dev_dbg(di->dev, "%s di->vbus_detected = true\n", __func__); - di->vbus_detected = true; - - if (is_ab8500_1p1_or_earlier(di->parent)) { - ret = ab8500_charger_detect_usb_type(di); - if (!ret) { - ab8500_charger_set_usb_connected(di, true); - ab8500_power_supply_changed(di, - di->usb_chg.psy); - } - } else { - /* - * For ABB cut2.0 and onwards we have an IRQ, - * USB_LINK_STATUS that will be triggered when the USB - * link status changes. The exception is USB connected - * during startup. Then we don't get a - * USB_LINK_STATUS IRQ - */ - if (di->vbus_detected_start) { - di->vbus_detected_start = false; - ret = ab8500_charger_detect_usb_type(di); - if (!ret) { - ab8500_charger_set_usb_connected(di, - true); - ab8500_power_supply_changed(di, - di->usb_chg.psy); - } - } - } - } -} - -/** - * ab8500_charger_usb_link_attach_work() - work to detect USB type - * @work: pointer to the work_struct structure - * - * Detect the type of USB plugged - */ -static void ab8500_charger_usb_link_attach_work(struct work_struct *work) -{ - struct ab8500_charger *di = - container_of(work, struct ab8500_charger, attach_work.work); - int ret; - - /* Update maximum input current if USB enumeration is not detected */ - if (!di->usb.charger_online) { - ret = ab8500_charger_set_vbus_in_curr(di, - di->max_usb_in_curr.usb_type_max); - if (ret) - return; - } - - ab8500_charger_set_usb_connected(di, true); - ab8500_power_supply_changed(di, di->usb_chg.psy); -} - -/** - * ab8500_charger_usb_link_status_work() - work to detect USB type - * @work: pointer to the work_struct structure - * - * Detect the type of USB plugged - */ -static void ab8500_charger_usb_link_status_work(struct work_struct *work) -{ - int detected_chargers; - int ret; - u8 val; - u8 link_status; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, usb_link_status_work); - - /* - * Since we can't be sure that the events are received - * synchronously, we have the check if is - * connected by reading the status register - */ - detected_chargers = ab8500_charger_detect_chargers(di, false); - if (detected_chargers < 0) - return; - - /* - * Some chargers that breaks the USB spec is - * identified as invalid by AB8500 and it refuse - * to start the charging process. but by jumping - * thru a few hoops it can be forced to start. - */ - if (is_ab8500(di->parent)) - ret = abx500_get_register_interruptible(di->dev, AB8500_USB, - AB8500_USB_LINE_STAT_REG, &val); - else - ret = abx500_get_register_interruptible(di->dev, AB8500_USB, - AB8500_USB_LINK1_STAT_REG, &val); - - if (ret >= 0) - dev_dbg(di->dev, "UsbLineStatus register = 0x%02x\n", val); - else - dev_dbg(di->dev, "Error reading USB link status\n"); - - if (is_ab8500(di->parent)) - link_status = AB8500_USB_LINK_STATUS; - else - link_status = AB8505_USB_LINK_STATUS; - - if (detected_chargers & USB_PW_CONN) { - if (((val & link_status) >> USB_LINK_STATUS_SHIFT) == - USB_STAT_NOT_VALID_LINK && - di->invalid_charger_detect_state == 0) { - dev_dbg(di->dev, - "Invalid charger detected, state= 0\n"); - /*Enable charger*/ - abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_USBCH_CTRL1_REG, - USB_CH_ENA, USB_CH_ENA); - /*Enable charger detection*/ - abx500_mask_and_set_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINE_CTRL2_REG, - USB_CH_DET, USB_CH_DET); - di->invalid_charger_detect_state = 1; - /*exit and wait for new link status interrupt.*/ - return; - - } - if (di->invalid_charger_detect_state == 1) { - dev_dbg(di->dev, - "Invalid charger detected, state= 1\n"); - /*Stop charger detection*/ - abx500_mask_and_set_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINE_CTRL2_REG, - USB_CH_DET, 0x00); - /*Check link status*/ - if (is_ab8500(di->parent)) - ret = abx500_get_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINE_STAT_REG, - &val); - else - ret = abx500_get_register_interruptible(di->dev, - AB8500_USB, AB8500_USB_LINK1_STAT_REG, - &val); - - dev_dbg(di->dev, "USB link status= 0x%02x\n", - (val & link_status) >> USB_LINK_STATUS_SHIFT); - di->invalid_charger_detect_state = 2; - } - } else { - di->invalid_charger_detect_state = 0; - } - - if (!(detected_chargers & USB_PW_CONN)) { - di->vbus_detected = false; - ab8500_charger_set_usb_connected(di, false); - ab8500_power_supply_changed(di, di->usb_chg.psy); - return; - } - - dev_dbg(di->dev,"%s di->vbus_detected = true\n",__func__); - di->vbus_detected = true; - ret = ab8500_charger_read_usb_type(di); - if (ret) { - if (ret == -ENXIO) { - /* No valid charger type detected */ - ab8500_charger_set_usb_connected(di, false); - ab8500_power_supply_changed(di, di->usb_chg.psy); - } - return; - } - - if (di->usb_device_is_unrecognised) { - dev_dbg(di->dev, - "Potential Legacy Charger device. " - "Delay work for %d msec for USB enum " - "to finish", - WAIT_ACA_RID_ENUMERATION); - queue_delayed_work(di->charger_wq, - &di->attach_work, - msecs_to_jiffies(WAIT_ACA_RID_ENUMERATION)); - } else if (di->is_aca_rid == 1) { - /* Only wait once */ - di->is_aca_rid++; - dev_dbg(di->dev, - "%s Wait %d msec for USB enum to finish", - __func__, WAIT_ACA_RID_ENUMERATION); - queue_delayed_work(di->charger_wq, - &di->attach_work, - msecs_to_jiffies(WAIT_ACA_RID_ENUMERATION)); - } else { - queue_delayed_work(di->charger_wq, - &di->attach_work, - 0); - } -} - -static void ab8500_charger_usb_state_changed_work(struct work_struct *work) -{ - int ret; - unsigned long flags; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, usb_state_changed_work.work); - - if (!di->vbus_detected) { - dev_dbg(di->dev, - "%s !di->vbus_detected\n", - __func__); - return; - } - - spin_lock_irqsave(&di->usb_state.usb_lock, flags); - di->usb_state.state = di->usb_state.state_tmp; - di->usb_state.usb_current = di->usb_state.usb_current_tmp; - spin_unlock_irqrestore(&di->usb_state.usb_lock, flags); - - dev_dbg(di->dev, "%s USB state: 0x%02x mA: %d\n", - __func__, di->usb_state.state, di->usb_state.usb_current); - - switch (di->usb_state.state) { - case AB8500_BM_USB_STATE_RESET_HS: - case AB8500_BM_USB_STATE_RESET_FS: - case AB8500_BM_USB_STATE_SUSPEND: - case AB8500_BM_USB_STATE_MAX: - ab8500_charger_set_usb_connected(di, false); - ab8500_power_supply_changed(di, di->usb_chg.psy); - break; - - case AB8500_BM_USB_STATE_RESUME: - /* - * when suspend->resume there should be delay - * of 1sec for enabling charging - */ - msleep(1000); - /* Intentional fall through */ - case AB8500_BM_USB_STATE_CONFIGURED: - /* - * USB is configured, enable charging with the charging - * input current obtained from USB driver - */ - if (!ab8500_charger_get_usb_cur(di)) { - /* Update maximum input current */ - ret = ab8500_charger_set_vbus_in_curr(di, - di->max_usb_in_curr.usb_type_max); - if (ret) - return; - - ab8500_charger_set_usb_connected(di, true); - ab8500_power_supply_changed(di, di->usb_chg.psy); - } - break; - - default: - break; - }; -} - -/** - * ab8500_charger_check_usbchargernotok_work() - check USB chg not ok status - * @work: pointer to the work_struct structure - * - * Work queue function for checking the USB charger Not OK status - */ -static void ab8500_charger_check_usbchargernotok_work(struct work_struct *work) -{ - int ret; - u8 reg_value; - bool prev_status; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, check_usbchgnotok_work.work); - - /* Check if the status bit for usbchargernotok is still active */ - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return; - } - prev_status = di->flags.usbchargernotok; - - if (reg_value & VBUS_CH_NOK) { - di->flags.usbchargernotok = true; - /* Check again in 1sec */ - queue_delayed_work(di->charger_wq, - &di->check_usbchgnotok_work, HZ); - } else { - di->flags.usbchargernotok = false; - di->flags.vbus_collapse = false; - } - - if (prev_status != di->flags.usbchargernotok) - ab8500_power_supply_changed(di, di->usb_chg.psy); -} - -/** - * ab8500_charger_check_main_thermal_prot_work() - check main thermal status - * @work: pointer to the work_struct structure - * - * Work queue function for checking the Main thermal prot status - */ -static void ab8500_charger_check_main_thermal_prot_work( - struct work_struct *work) -{ - int ret; - u8 reg_value; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, check_main_thermal_prot_work); - - /* Check if the status bit for main_thermal_prot is still active */ - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return; - } - if (reg_value & MAIN_CH_TH_PROT) - di->flags.main_thermal_prot = true; - else - di->flags.main_thermal_prot = false; - - ab8500_power_supply_changed(di, di->ac_chg.psy); -} - -/** - * ab8500_charger_check_usb_thermal_prot_work() - check usb thermal status - * @work: pointer to the work_struct structure - * - * Work queue function for checking the USB thermal prot status - */ -static void ab8500_charger_check_usb_thermal_prot_work( - struct work_struct *work) -{ - int ret; - u8 reg_value; - - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, check_usb_thermal_prot_work); - - /* Check if the status bit for usb_thermal_prot is still active */ - ret = abx500_get_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value); - if (ret < 0) { - dev_err(di->dev, "%s ab8500 read failed\n", __func__); - return; - } - if (reg_value & USB_CH_TH_PROT) - di->flags.usb_thermal_prot = true; - else - di->flags.usb_thermal_prot = false; - - ab8500_power_supply_changed(di, di->usb_chg.psy); -} - -/** - * ab8500_charger_mainchunplugdet_handler() - main charger unplugged - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_mainchunplugdet_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "Main charger unplugged\n"); - queue_work(di->charger_wq, &di->ac_work); - - cancel_delayed_work_sync(&di->ac_charger_attached_work); - mutex_lock(&di->charger_attached_mutex); - mutex_unlock(&di->charger_attached_mutex); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_mainchplugdet_handler() - main charger plugged - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_mainchplugdet_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "Main charger plugged\n"); - queue_work(di->charger_wq, &di->ac_work); - - mutex_lock(&di->charger_attached_mutex); - mutex_unlock(&di->charger_attached_mutex); - - if (is_ab8500(di->parent)) - queue_delayed_work(di->charger_wq, - &di->ac_charger_attached_work, - HZ); - return IRQ_HANDLED; -} - -/** - * ab8500_charger_mainextchnotok_handler() - main charger not ok - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_mainextchnotok_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "Main charger not ok\n"); - di->flags.mainextchnotok = true; - ab8500_power_supply_changed(di, di->ac_chg.psy); - - /* Schedule a new HW failure check */ - queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_mainchthprotr_handler() - Die temp is above main charger - * thermal protection threshold - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_mainchthprotr_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, - "Die temp above Main charger thermal protection threshold\n"); - queue_work(di->charger_wq, &di->check_main_thermal_prot_work); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_mainchthprotf_handler() - Die temp is below main charger - * thermal protection threshold - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_mainchthprotf_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, - "Die temp ok for Main charger thermal protection threshold\n"); - queue_work(di->charger_wq, &di->check_main_thermal_prot_work); - - return IRQ_HANDLED; -} - -static void ab8500_charger_vbus_drop_end_work(struct work_struct *work) -{ - struct ab8500_charger *di = container_of(work, - struct ab8500_charger, vbus_drop_end_work.work); - int ret, curr; - u8 reg_value; - - di->flags.vbus_drop_end = false; - - /* Reset the drop counter */ - abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CHARGER_CTRL, 0x01); - - if (is_ab8540(di->parent)) - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8540_CH_USBCH_STAT3_REG, ®_value); - else - ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_USBCH_STAT2_REG, ®_value); - if (ret < 0) { - dev_err(di->dev, "%s read failed\n", __func__); - return; - } - - if (is_ab8540(di->parent)) - curr = di->bm->chg_input_curr[ - reg_value & AB8540_AUTO_VBUS_IN_CURR_MASK]; - else - curr = di->bm->chg_input_curr[ - reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT]; - - if (di->max_usb_in_curr.calculated_max != curr) { - /* USB source is collapsing */ - di->max_usb_in_curr.calculated_max = curr; - dev_dbg(di->dev, - "VBUS input current limiting to %d mA\n", - di->max_usb_in_curr.calculated_max); - } else { - /* - * USB source can not give more than this amount. - * Taking more will collapse the source. - */ - di->max_usb_in_curr.set_max = - di->max_usb_in_curr.calculated_max; - dev_dbg(di->dev, - "VBUS input current limited to %d mA\n", - di->max_usb_in_curr.set_max); - } - - if (di->usb.charger_connected) - ab8500_charger_set_vbus_in_curr(di, - di->max_usb_in_curr.usb_type_max); -} - -/** - * ab8500_charger_vbusdetf_handler() - VBUS falling detected - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_vbusdetf_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - di->vbus_detected = false; - dev_dbg(di->dev, "VBUS falling detected\n"); - queue_work(di->charger_wq, &di->detect_usb_type_work); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_vbusdetr_handler() - VBUS rising detected - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_vbusdetr_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - di->vbus_detected = true; - dev_dbg(di->dev, "VBUS rising detected\n"); - - queue_work(di->charger_wq, &di->detect_usb_type_work); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_usblinkstatus_handler() - USB link status has changed - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_usblinkstatus_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "USB link status changed\n"); - - queue_work(di->charger_wq, &di->usb_link_status_work); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_usbchthprotr_handler() - Die temp is above usb charger - * thermal protection threshold - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_usbchthprotr_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, - "Die temp above USB charger thermal protection threshold\n"); - queue_work(di->charger_wq, &di->check_usb_thermal_prot_work); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_usbchthprotf_handler() - Die temp is below usb charger - * thermal protection threshold - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_usbchthprotf_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, - "Die temp ok for USB charger thermal protection threshold\n"); - queue_work(di->charger_wq, &di->check_usb_thermal_prot_work); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_usbchargernotokr_handler() - USB charger not ok detected - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_usbchargernotokr_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "Not allowed USB charger detected\n"); - queue_delayed_work(di->charger_wq, &di->check_usbchgnotok_work, 0); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_chwdexp_handler() - Charger watchdog expired - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_chwdexp_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "Charger watchdog expired\n"); - - /* - * The charger that was online when the watchdog expired - * needs to be restarted for charging to start again - */ - if (di->ac.charger_online) { - di->ac.wd_expired = true; - ab8500_power_supply_changed(di, di->ac_chg.psy); - } - if (di->usb.charger_online) { - di->usb.wd_expired = true; - ab8500_power_supply_changed(di, di->usb_chg.psy); - } - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_vbuschdropend_handler() - VBUS drop removed - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_vbuschdropend_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "VBUS charger drop ended\n"); - di->flags.vbus_drop_end = true; - - /* - * VBUS might have dropped due to bad connection. - * Schedule a new input limit set to the value SW requests. - */ - queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work, - round_jiffies(VBUS_IN_CURR_LIM_RETRY_SET_TIME * HZ)); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_vbusovv_handler() - VBUS overvoltage detected - * @irq: interrupt number - * @_di: pointer to the ab8500_charger structure - * - * Returns IRQ status(IRQ_HANDLED) - */ -static irqreturn_t ab8500_charger_vbusovv_handler(int irq, void *_di) -{ - struct ab8500_charger *di = _di; - - dev_dbg(di->dev, "VBUS overvoltage detected\n"); - di->flags.vbus_ovv = true; - ab8500_power_supply_changed(di, di->usb_chg.psy); - - /* Schedule a new HW failure check */ - queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0); - - return IRQ_HANDLED; -} - -/** - * ab8500_charger_ac_get_property() - get the ac/mains properties - * @psy: pointer to the power_supply structure - * @psp: pointer to the power_supply_property structure - * @val: pointer to the power_supply_propval union - * - * This function gets called when an application tries to get the ac/mains - * properties by reading the sysfs files. - * AC/Mains properties are online, present and voltage. - * online: ac/mains charging is in progress or not - * present: presence of the ac/mains - * voltage: AC/Mains voltage - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_ac_get_property(struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - struct ab8500_charger *di; - int ret; - - di = to_ab8500_charger_ac_device_info(psy_to_ux500_charger(psy)); - - switch (psp) { - case POWER_SUPPLY_PROP_HEALTH: - if (di->flags.mainextchnotok) - val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; - else if (di->ac.wd_expired || di->usb.wd_expired) - val->intval = POWER_SUPPLY_HEALTH_DEAD; - else if (di->flags.main_thermal_prot) - val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; - else - val->intval = POWER_SUPPLY_HEALTH_GOOD; - break; - case POWER_SUPPLY_PROP_ONLINE: - val->intval = di->ac.charger_online; - break; - case POWER_SUPPLY_PROP_PRESENT: - val->intval = di->ac.charger_connected; - break; - case POWER_SUPPLY_PROP_VOLTAGE_NOW: - ret = ab8500_charger_get_ac_voltage(di); - if (ret >= 0) - di->ac.charger_voltage = ret; - /* On error, use previous value */ - val->intval = di->ac.charger_voltage * 1000; - break; - case POWER_SUPPLY_PROP_VOLTAGE_AVG: - /* - * This property is used to indicate when CV mode is entered - * for the AC charger - */ - di->ac.cv_active = ab8500_charger_ac_cv(di); - val->intval = di->ac.cv_active; - break; - case POWER_SUPPLY_PROP_CURRENT_NOW: - ret = ab8500_charger_get_ac_current(di); - if (ret >= 0) - di->ac.charger_current = ret; - val->intval = di->ac.charger_current * 1000; - break; - default: - return -EINVAL; - } - return 0; -} - -/** - * ab8500_charger_usb_get_property() - get the usb properties - * @psy: pointer to the power_supply structure - * @psp: pointer to the power_supply_property structure - * @val: pointer to the power_supply_propval union - * - * This function gets called when an application tries to get the usb - * properties by reading the sysfs files. - * USB properties are online, present and voltage. - * online: usb charging is in progress or not - * present: presence of the usb - * voltage: vbus voltage - * Returns error code in case of failure else 0(on success) - */ -static int ab8500_charger_usb_get_property(struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - struct ab8500_charger *di; - int ret; - - di = to_ab8500_charger_usb_device_info(psy_to_ux500_charger(psy)); - - switch (psp) { - case POWER_SUPPLY_PROP_HEALTH: - if (di->flags.usbchargernotok) - val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; - else if (di->ac.wd_expired || di->usb.wd_expired) - val->intval = POWER_SUPPLY_HEALTH_DEAD; - else if (di->flags.usb_thermal_prot) - val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; - else if (di->flags.vbus_ovv) - val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; - else - val->intval = POWER_SUPPLY_HEALTH_GOOD; - break; - case POWER_SUPPLY_PROP_ONLINE: - val->intval = di->usb.charger_online; - break; - case POWER_SUPPLY_PROP_PRESENT: - val->intval = di->usb.charger_connected; - break; - case POWER_SUPPLY_PROP_VOLTAGE_NOW: - ret = ab8500_charger_get_vbus_voltage(di); - if (ret >= 0) - di->usb.charger_voltage = ret; - val->intval = di->usb.charger_voltage * 1000; - break; - case POWER_SUPPLY_PROP_VOLTAGE_AVG: - /* - * This property is used to indicate when CV mode is entered - * for the USB charger - */ - di->usb.cv_active = ab8500_charger_usb_cv(di); - val->intval = di->usb.cv_active; - break; - case POWER_SUPPLY_PROP_CURRENT_NOW: - ret = ab8500_charger_get_usb_current(di); - if (ret >= 0) - di->usb.charger_current = ret; - val->intval = di->usb.charger_current * 1000; - break; - case POWER_SUPPLY_PROP_CURRENT_AVG: - /* - * This property is used to indicate when VBUS has collapsed - * due to too high output current from the USB charger - */ - if (di->flags.vbus_collapse) - val->intval = 1; - else - val->intval = 0; - break; - default: - return -EINVAL; - } - return 0; -} - -/** - * ab8500_charger_init_hw_registers() - Set up charger related registers - * @di: pointer to the ab8500_charger structure - * - * Set up charger OVV, watchdog and maximum voltage registers as well as - * charging of the backup battery - */ -static int ab8500_charger_init_hw_registers(struct ab8500_charger *di) -{ - int ret = 0; - u8 bup_vch_range = 0, vbup33_vrtcn = 0; - - /* Setup maximum charger current and voltage for ABB cut2.0 */ - if (!is_ab8500_1p1_or_earlier(di->parent)) { - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_CH_VOLT_LVL_MAX_REG, CH_VOL_LVL_4P6); - if (ret) { - dev_err(di->dev, - "failed to set CH_VOLT_LVL_MAX_REG\n"); - goto out; - } - - if (is_ab8540(di->parent)) - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG, - CH_OP_CUR_LVL_2P); - else - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG, - CH_OP_CUR_LVL_1P6); - if (ret) { - dev_err(di->dev, - "failed to set CH_OPT_CRNTLVL_MAX_REG\n"); - goto out; - } - } - - if (is_ab9540_2p0(di->parent) || is_ab9540_3p0(di->parent) - || is_ab8505_2p0(di->parent) || is_ab8540(di->parent)) - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_USBCH_CTRL2_REG, - VBUS_AUTO_IN_CURR_LIM_ENA, - VBUS_AUTO_IN_CURR_LIM_ENA); - else - /* - * VBUS OVV set to 6.3V and enable automatic current limitation - */ - ret = abx500_set_register_interruptible(di->dev, - AB8500_CHARGER, - AB8500_USBCH_CTRL2_REG, - VBUS_OVV_SELECT_6P3V | VBUS_AUTO_IN_CURR_LIM_ENA); - if (ret) { - dev_err(di->dev, - "failed to set automatic current limitation\n"); - goto out; - } - - /* Enable main watchdog in OTP */ - ret = abx500_set_register_interruptible(di->dev, - AB8500_OTP_EMUL, AB8500_OTP_CONF_15, OTP_ENABLE_WD); - if (ret) { - dev_err(di->dev, "failed to enable main WD in OTP\n"); - goto out; - } - - /* Enable main watchdog */ - ret = abx500_set_register_interruptible(di->dev, - AB8500_SYS_CTRL2_BLOCK, - AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_ENA); - if (ret) { - dev_err(di->dev, "faile to enable main watchdog\n"); - goto out; - } - - /* - * Due to internal synchronisation, Enable and Kick watchdog bits - * cannot be enabled in a single write. - * A minimum delay of 2*32 kHz period (62.5µs) must be inserted - * between writing Enable then Kick bits. - */ - udelay(63); - - /* Kick main watchdog */ - ret = abx500_set_register_interruptible(di->dev, - AB8500_SYS_CTRL2_BLOCK, - AB8500_MAIN_WDOG_CTRL_REG, - (MAIN_WDOG_ENA | MAIN_WDOG_KICK)); - if (ret) { - dev_err(di->dev, "failed to kick main watchdog\n"); - goto out; - } - - /* Disable main watchdog */ - ret = abx500_set_register_interruptible(di->dev, - AB8500_SYS_CTRL2_BLOCK, - AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_DIS); - if (ret) { - dev_err(di->dev, "failed to disable main watchdog\n"); - goto out; - } - - /* Set watchdog timeout */ - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CH_WD_TIMER_REG, WD_TIMER); - if (ret) { - dev_err(di->dev, "failed to set charger watchdog timeout\n"); - goto out; - } - - ret = ab8500_charger_led_en(di, false); - if (ret < 0) { - dev_err(di->dev, "failed to disable LED\n"); - goto out; - } - - /* Backup battery voltage and current */ - if (di->bm->bkup_bat_v > BUP_VCH_SEL_3P1V) - bup_vch_range = BUP_VCH_RANGE; - if (di->bm->bkup_bat_v == BUP_VCH_SEL_3P3V) - vbup33_vrtcn = VBUP33_VRTCN; - - ret = abx500_set_register_interruptible(di->dev, - AB8500_RTC, - AB8500_RTC_BACKUP_CHG_REG, - (di->bm->bkup_bat_v & 0x3) | di->bm->bkup_bat_i); - if (ret) { - dev_err(di->dev, "failed to setup backup battery charging\n"); - goto out; - } - if (is_ab8540(di->parent)) { - ret = abx500_set_register_interruptible(di->dev, - AB8500_RTC, - AB8500_RTC_CTRL1_REG, - bup_vch_range | vbup33_vrtcn); - if (ret) { - dev_err(di->dev, - "failed to setup backup battery charging\n"); - goto out; - } - } - - /* Enable backup battery charging */ - abx500_mask_and_set_register_interruptible(di->dev, - AB8500_RTC, AB8500_RTC_CTRL_REG, - RTC_BUP_CH_ENA, RTC_BUP_CH_ENA); - if (ret < 0) - dev_err(di->dev, "%s mask and set failed\n", __func__); - - if (is_ab8540(di->parent)) { - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8540_USB_PP_MODE_REG, - BUS_VSYS_VOL_SELECT_MASK, BUS_VSYS_VOL_SELECT_3P6V); - if (ret) { - dev_err(di->dev, - "failed to setup usb power path vsys voltage\n"); - goto out; - } - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_CHARGER, AB8540_USB_PP_CHR_REG, - BUS_PP_PRECHG_CURRENT_MASK, 0); - if (ret) { - dev_err(di->dev, - "failed to setup usb power path prechage current\n"); - goto out; - } - } - -out: - return ret; -} - -/* - * ab8500 charger driver interrupts and their respective isr - */ -static struct ab8500_charger_interrupts ab8500_charger_irq[] = { - {"MAIN_CH_UNPLUG_DET", ab8500_charger_mainchunplugdet_handler}, - {"MAIN_CHARGE_PLUG_DET", ab8500_charger_mainchplugdet_handler}, - {"MAIN_EXT_CH_NOT_OK", ab8500_charger_mainextchnotok_handler}, - {"MAIN_CH_TH_PROT_R", ab8500_charger_mainchthprotr_handler}, - {"MAIN_CH_TH_PROT_F", ab8500_charger_mainchthprotf_handler}, - {"VBUS_DET_F", ab8500_charger_vbusdetf_handler}, - {"VBUS_DET_R", ab8500_charger_vbusdetr_handler}, - {"USB_LINK_STATUS", ab8500_charger_usblinkstatus_handler}, - {"USB_CH_TH_PROT_R", ab8500_charger_usbchthprotr_handler}, - {"USB_CH_TH_PROT_F", ab8500_charger_usbchthprotf_handler}, - {"USB_CHARGER_NOT_OKR", ab8500_charger_usbchargernotokr_handler}, - {"VBUS_OVV", ab8500_charger_vbusovv_handler}, - {"CH_WD_EXP", ab8500_charger_chwdexp_handler}, - {"VBUS_CH_DROP_END", ab8500_charger_vbuschdropend_handler}, -}; - -static int ab8500_charger_usb_notifier_call(struct notifier_block *nb, - unsigned long event, void *power) -{ - struct ab8500_charger *di = - container_of(nb, struct ab8500_charger, nb); - enum ab8500_usb_state bm_usb_state; - unsigned mA = *((unsigned *)power); - - if (!di) - return NOTIFY_DONE; - - if (event != USB_EVENT_VBUS) { - dev_dbg(di->dev, "not a standard host, returning\n"); - return NOTIFY_DONE; - } - - /* TODO: State is fabricate here. See if charger really needs USB - * state or if mA is enough - */ - if ((di->usb_state.usb_current == 2) && (mA > 2)) - bm_usb_state = AB8500_BM_USB_STATE_RESUME; - else if (mA == 0) - bm_usb_state = AB8500_BM_USB_STATE_RESET_HS; - else if (mA == 2) - bm_usb_state = AB8500_BM_USB_STATE_SUSPEND; - else if (mA >= 8) /* 8, 100, 500 */ - bm_usb_state = AB8500_BM_USB_STATE_CONFIGURED; - else /* Should never occur */ - bm_usb_state = AB8500_BM_USB_STATE_RESET_FS; - - dev_dbg(di->dev, "%s usb_state: 0x%02x mA: %d\n", - __func__, bm_usb_state, mA); - - spin_lock(&di->usb_state.usb_lock); - di->usb_state.state_tmp = bm_usb_state; - di->usb_state.usb_current_tmp = mA; - spin_unlock(&di->usb_state.usb_lock); - - /* - * wait for some time until you get updates from the usb stack - * and negotiations are completed - */ - queue_delayed_work(di->charger_wq, &di->usb_state_changed_work, HZ/2); - - return NOTIFY_OK; -} - -#if defined(CONFIG_PM) -static int ab8500_charger_resume(struct platform_device *pdev) -{ - int ret; - struct ab8500_charger *di = platform_get_drvdata(pdev); - - /* - * For ABB revision 1.0 and 1.1 there is a bug in the watchdog - * logic. That means we have to continously kick the charger - * watchdog even when no charger is connected. This is only - * valid once the AC charger has been enabled. This is - * a bug that is not handled by the algorithm and the - * watchdog have to be kicked by the charger driver - * when the AC charger is disabled - */ - if (di->ac_conn && is_ab8500_1p1_or_earlier(di->parent)) { - ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, - AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); - if (ret) - dev_err(di->dev, "Failed to kick WD!\n"); - - /* If not already pending start a new timer */ - queue_delayed_work(di->charger_wq, &di->kick_wd_work, - round_jiffies(WD_KICK_INTERVAL)); - } - - /* If we still have a HW failure, schedule a new check */ - if (di->flags.mainextchnotok || di->flags.vbus_ovv) { - queue_delayed_work(di->charger_wq, - &di->check_hw_failure_work, 0); - } - - if (di->flags.vbus_drop_end) - queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work, 0); - - return 0; -} - -static int ab8500_charger_suspend(struct platform_device *pdev, - pm_message_t state) -{ - struct ab8500_charger *di = platform_get_drvdata(pdev); - - /* Cancel any pending jobs */ - cancel_delayed_work(&di->check_hw_failure_work); - cancel_delayed_work(&di->vbus_drop_end_work); - - flush_delayed_work(&di->attach_work); - flush_delayed_work(&di->usb_charger_attached_work); - flush_delayed_work(&di->ac_charger_attached_work); - flush_delayed_work(&di->check_usbchgnotok_work); - flush_delayed_work(&di->check_vbat_work); - flush_delayed_work(&di->kick_wd_work); - - flush_work(&di->usb_link_status_work); - flush_work(&di->ac_work); - flush_work(&di->detect_usb_type_work); - - if (atomic_read(&di->current_stepping_sessions)) - return -EAGAIN; - - return 0; -} -#else -#define ab8500_charger_suspend NULL -#define ab8500_charger_resume NULL -#endif - -static struct notifier_block charger_nb = { - .notifier_call = ab8500_external_charger_prepare, -}; - -static int ab8500_charger_remove(struct platform_device *pdev) -{ - struct ab8500_charger *di = platform_get_drvdata(pdev); - int i, irq, ret; - - /* Disable AC charging */ - ab8500_charger_ac_en(&di->ac_chg, false, 0, 0); - - /* Disable USB charging */ - ab8500_charger_usb_en(&di->usb_chg, false, 0, 0); - - /* Disable interrupts */ - for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) { - irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); - free_irq(irq, di); - } - - /* Backup battery voltage and current disable */ - ret = abx500_mask_and_set_register_interruptible(di->dev, - AB8500_RTC, AB8500_RTC_CTRL_REG, RTC_BUP_CH_ENA, 0); - if (ret < 0) - dev_err(di->dev, "%s mask and set failed\n", __func__); - - usb_unregister_notifier(di->usb_phy, &di->nb); - usb_put_phy(di->usb_phy); - - /* Delete the work queue */ - destroy_workqueue(di->charger_wq); - - /* Unregister external charger enable notifier */ - if (!di->ac_chg.enabled) - blocking_notifier_chain_unregister( - &charger_notifier_list, &charger_nb); - - flush_scheduled_work(); - if (di->usb_chg.enabled) - power_supply_unregister(di->usb_chg.psy); - - if (di->ac_chg.enabled && !di->ac_chg.external) - power_supply_unregister(di->ac_chg.psy); - - return 0; -} - -static char *supply_interface[] = { - "ab8500_chargalg", - "ab8500_fg", - "ab8500_btemp", -}; - -static const struct power_supply_desc ab8500_ac_chg_desc = { - .name = "ab8500_ac", - .type = POWER_SUPPLY_TYPE_MAINS, - .properties = ab8500_charger_ac_props, - .num_properties = ARRAY_SIZE(ab8500_charger_ac_props), - .get_property = ab8500_charger_ac_get_property, -}; - -static const struct power_supply_desc ab8500_usb_chg_desc = { - .name = "ab8500_usb", - .type = POWER_SUPPLY_TYPE_USB, - .properties = ab8500_charger_usb_props, - .num_properties = ARRAY_SIZE(ab8500_charger_usb_props), - .get_property = ab8500_charger_usb_get_property, -}; - -static int ab8500_charger_probe(struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - struct abx500_bm_data *plat = pdev->dev.platform_data; - struct power_supply_config ac_psy_cfg = {}, usb_psy_cfg = {}; - struct ab8500_charger *di; - int irq, i, charger_status, ret = 0, ch_stat; - - di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL); - if (!di) { - dev_err(&pdev->dev, "%s no mem for ab8500_charger\n", __func__); - return -ENOMEM; - } - - if (!plat) { - dev_err(&pdev->dev, "no battery management data supplied\n"); - return -EINVAL; - } - di->bm = plat; - - if (np) { - ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm); - if (ret) { - dev_err(&pdev->dev, "failed to get battery information\n"); - return ret; - } - di->autopower_cfg = of_property_read_bool(np, "autopower_cfg"); - } else - di->autopower_cfg = false; - - /* get parent data */ - di->dev = &pdev->dev; - di->parent = dev_get_drvdata(pdev->dev.parent); - di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); - - /* initialize lock */ - spin_lock_init(&di->usb_state.usb_lock); - mutex_init(&di->usb_ipt_crnt_lock); - - di->autopower = false; - di->invalid_charger_detect_state = 0; - - /* AC and USB supply config */ - ac_psy_cfg.supplied_to = supply_interface; - ac_psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface); - ac_psy_cfg.drv_data = &di->ac_chg; - usb_psy_cfg.supplied_to = supply_interface; - usb_psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface); - usb_psy_cfg.drv_data = &di->usb_chg; - - /* AC supply */ - /* ux500_charger sub-class */ - di->ac_chg.ops.enable = &ab8500_charger_ac_en; - di->ac_chg.ops.check_enable = &ab8500_charger_ac_check_enable; - di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick; - di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current; - di->ac_chg.max_out_volt = ab8500_charger_voltage_map[ - ARRAY_SIZE(ab8500_charger_voltage_map) - 1]; - di->ac_chg.max_out_curr = - di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1]; - di->ac_chg.wdt_refresh = CHG_WD_INTERVAL; - di->ac_chg.enabled = di->bm->ac_enabled; - di->ac_chg.external = false; - - /*notifier for external charger enabling*/ - if (!di->ac_chg.enabled) - blocking_notifier_chain_register( - &charger_notifier_list, &charger_nb); - - /* USB supply */ - /* ux500_charger sub-class */ - di->usb_chg.ops.enable = &ab8500_charger_usb_en; - di->usb_chg.ops.check_enable = &ab8500_charger_usb_check_enable; - di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick; - di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current; - di->usb_chg.ops.pp_enable = &ab8540_charger_power_path_enable; - di->usb_chg.ops.pre_chg_enable = &ab8540_charger_usb_pre_chg_enable; - di->usb_chg.max_out_volt = ab8500_charger_voltage_map[ - ARRAY_SIZE(ab8500_charger_voltage_map) - 1]; - di->usb_chg.max_out_curr = - di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1]; - di->usb_chg.wdt_refresh = CHG_WD_INTERVAL; - di->usb_chg.enabled = di->bm->usb_enabled; - di->usb_chg.external = false; - di->usb_chg.power_path = di->bm->usb_power_path; - di->usb_state.usb_current = -1; - - /* Create a work queue for the charger */ - di->charger_wq = - create_singlethread_workqueue("ab8500_charger_wq"); - if (di->charger_wq == NULL) { - dev_err(di->dev, "failed to create work queue\n"); - return -ENOMEM; - } - - mutex_init(&di->charger_attached_mutex); - - /* Init work for HW failure check */ - INIT_DEFERRABLE_WORK(&di->check_hw_failure_work, - ab8500_charger_check_hw_failure_work); - INIT_DEFERRABLE_WORK(&di->check_usbchgnotok_work, - ab8500_charger_check_usbchargernotok_work); - - INIT_DELAYED_WORK(&di->ac_charger_attached_work, - ab8500_charger_ac_attached_work); - INIT_DELAYED_WORK(&di->usb_charger_attached_work, - ab8500_charger_usb_attached_work); - - /* - * For ABB revision 1.0 and 1.1 there is a bug in the watchdog - * logic. That means we have to continously kick the charger - * watchdog even when no charger is connected. This is only - * valid once the AC charger has been enabled. This is - * a bug that is not handled by the algorithm and the - * watchdog have to be kicked by the charger driver - * when the AC charger is disabled - */ - INIT_DEFERRABLE_WORK(&di->kick_wd_work, - ab8500_charger_kick_watchdog_work); - - INIT_DEFERRABLE_WORK(&di->check_vbat_work, - ab8500_charger_check_vbat_work); - - INIT_DELAYED_WORK(&di->attach_work, - ab8500_charger_usb_link_attach_work); - - INIT_DELAYED_WORK(&di->usb_state_changed_work, - ab8500_charger_usb_state_changed_work); - - INIT_DELAYED_WORK(&di->vbus_drop_end_work, - ab8500_charger_vbus_drop_end_work); - - /* Init work for charger detection */ - INIT_WORK(&di->usb_link_status_work, - ab8500_charger_usb_link_status_work); - INIT_WORK(&di->ac_work, ab8500_charger_ac_work); - INIT_WORK(&di->detect_usb_type_work, - ab8500_charger_detect_usb_type_work); - - /* Init work for checking HW status */ - INIT_WORK(&di->check_main_thermal_prot_work, - ab8500_charger_check_main_thermal_prot_work); - INIT_WORK(&di->check_usb_thermal_prot_work, - ab8500_charger_check_usb_thermal_prot_work); - - /* - * VDD ADC supply needs to be enabled from this driver when there - * is a charger connected to avoid erroneous BTEMP_HIGH/LOW - * interrupts during charging - */ - di->regu = devm_regulator_get(di->dev, "vddadc"); - if (IS_ERR(di->regu)) { - ret = PTR_ERR(di->regu); - dev_err(di->dev, "failed to get vddadc regulator\n"); - goto free_charger_wq; - } - - - /* Initialize OVV, and other registers */ - ret = ab8500_charger_init_hw_registers(di); - if (ret) { - dev_err(di->dev, "failed to initialize ABB registers\n"); - goto free_charger_wq; - } - - /* Register AC charger class */ - if (di->ac_chg.enabled) { - di->ac_chg.psy = power_supply_register(di->dev, - &ab8500_ac_chg_desc, - &ac_psy_cfg); - if (IS_ERR(di->ac_chg.psy)) { - dev_err(di->dev, "failed to register AC charger\n"); - ret = PTR_ERR(di->ac_chg.psy); - goto free_charger_wq; - } - } - - /* Register USB charger class */ - if (di->usb_chg.enabled) { - di->usb_chg.psy = power_supply_register(di->dev, - &ab8500_usb_chg_desc, - &usb_psy_cfg); - if (IS_ERR(di->usb_chg.psy)) { - dev_err(di->dev, "failed to register USB charger\n"); - ret = PTR_ERR(di->usb_chg.psy); - goto free_ac; - } - } - - di->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(di->usb_phy)) { - dev_err(di->dev, "failed to get usb transceiver\n"); - ret = -EINVAL; - goto free_usb; - } - di->nb.notifier_call = ab8500_charger_usb_notifier_call; - ret = usb_register_notifier(di->usb_phy, &di->nb); - if (ret) { - dev_err(di->dev, "failed to register usb notifier\n"); - goto put_usb_phy; - } - - /* Identify the connected charger types during startup */ - charger_status = ab8500_charger_detect_chargers(di, true); - if (charger_status & AC_PW_CONN) { - di->ac.charger_connected = 1; - di->ac_conn = true; - ab8500_power_supply_changed(di, di->ac_chg.psy); - sysfs_notify(&di->ac_chg.psy->dev.kobj, NULL, "present"); - } - - if (charger_status & USB_PW_CONN) { - di->vbus_detected = true; - di->vbus_detected_start = true; - queue_work(di->charger_wq, - &di->detect_usb_type_work); - } - - /* Register interrupts */ - for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) { - irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); - ret = request_threaded_irq(irq, NULL, ab8500_charger_irq[i].isr, - IRQF_SHARED | IRQF_NO_SUSPEND, - ab8500_charger_irq[i].name, di); - - if (ret != 0) { - dev_err(di->dev, "failed to request %s IRQ %d: %d\n" - , ab8500_charger_irq[i].name, irq, ret); - goto free_irq; - } - dev_dbg(di->dev, "Requested %s IRQ %d: %d\n", - ab8500_charger_irq[i].name, irq, ret); - } - - platform_set_drvdata(pdev, di); - - mutex_lock(&di->charger_attached_mutex); - - ch_stat = ab8500_charger_detect_chargers(di, false); - - if ((ch_stat & AC_PW_CONN) == AC_PW_CONN) { - if (is_ab8500(di->parent)) - queue_delayed_work(di->charger_wq, - &di->ac_charger_attached_work, - HZ); - } - if ((ch_stat & USB_PW_CONN) == USB_PW_CONN) { - if (is_ab8500(di->parent)) - queue_delayed_work(di->charger_wq, - &di->usb_charger_attached_work, - HZ); - } - - mutex_unlock(&di->charger_attached_mutex); - - return ret; - -free_irq: - usb_unregister_notifier(di->usb_phy, &di->nb); - - /* We also have to free all successfully registered irqs */ - for (i = i - 1; i >= 0; i--) { - irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); - free_irq(irq, di); - } -put_usb_phy: - usb_put_phy(di->usb_phy); -free_usb: - if (di->usb_chg.enabled) - power_supply_unregister(di->usb_chg.psy); -free_ac: - if (di->ac_chg.enabled) - power_supply_unregister(di->ac_chg.psy); -free_charger_wq: - destroy_workqueue(di->charger_wq); - return ret; -} - -static const struct of_device_id ab8500_charger_match[] = { - { .compatible = "stericsson,ab8500-charger", }, - { }, -}; - -static struct platform_driver ab8500_charger_driver = { - .probe = ab8500_charger_probe, - .remove = ab8500_charger_remove, - .suspend = ab8500_charger_suspend, - .resume = ab8500_charger_resume, - .driver = { - .name = "ab8500-charger", - .of_match_table = ab8500_charger_match, - }, -}; - -static int __init ab8500_charger_init(void) -{ - return platform_driver_register(&ab8500_charger_driver); -} - -static void __exit ab8500_charger_exit(void) -{ - platform_driver_unregister(&ab8500_charger_driver); -} - -subsys_initcall_sync(ab8500_charger_init); -module_exit(ab8500_charger_exit); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy"); -MODULE_ALIAS("platform:ab8500-charger"); -MODULE_DESCRIPTION("AB8500 charger management driver"); |