forked from luck/tmp_suning_uos_patched
151173e8ce
- OpenFirmware/DeviceTree support for the Power Supply core: the core now automatically populates supplied_from hierarchy from the device tree. With these patches chargers and batteries can now lookup each other without the board files support shim. Rhyland Klein at NVIDIA did the work; - New ST-Ericsson ABX500 hwmon driver. The driver is heavily using the AB85xx core and depends on some recent changes to it, so that is why the driver comes through the battery tree. It has an appropriate ack from the hwmon maintainer (i.e. Guenter Roeck). Martin Persson at ST-Ericsson and Hongbo Zhang at Linaro authored the driver; - Final bits to sync AB85xx ST-Ericsson changes into mainline. The changes touch mfd parts, but these were acked by the appropriate MFD maintainer (i.e. Samuel Ortiz). Lee Jones at Linaro did most of the work and lead the submission process. Minor changes, but still worth mentioning: - Battery temperature reporting fix for Nokia N900 phones; - Versatile Express poweroff driver moved into drivers/power/reset/. - Tree-wise: use devm_kzalloc() where appropriate; - Tree-wise: dev_pm_ops cleanups/fixes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIcBAABAgAGBQJRf1BPAAoJEGgI9fZJve1bwyoP/3Gv+qStzbN7mUtIVEvH3EAe aVJwlODFzEZjk5xoiw7Dc8PuBE8O948hWOnQyCuUQ8+OfK6SyNIjexPYy3Z25a0F cX9JMj7rtPWHvxo2q/YuKwBPZoxj/JIPyxwUT7akwXoHAV059fvcy9R1DfFX2Qur hSP0NXTg+guvEpxGV4bC2l+LWZPmDFK9n0RsorttYaBvsiRDWl0c2TY2byofYlBw ++m/rI8Qgl8db8pKq/WDue62HtMt3kmZj6ZIgej3Wb0+GIRmYHMyPIyAkf82Wlw2 g2sGNPT7cstrSNOozegzJ7UghJObcYDFf10NCgvFMNjmAT1dAwdneQHEWy6Ek7pT 9X3e0LmaFqVbufFp4xFiLkMutsCLLTnGyXIbzs7RkTm3XBVIUqiDWtI6I6X44ohG 6PJn8vUlufu7owXrqFpgSBar2U1vfoQdhInmz4hbQeff0qn2nX/BGNwhxYptZ549 TudsI9WGzJ6fvYQ56zh6+BfiA0FmjhUiSKOtrXImrhxE6gUf3IOJyMQlkxLx5t8D uuhBmO0J6kDi2lqF6alOEo+UDefJj4mUJn2tnIdis90+lNQlSV02GEtiwFT1zt1z LFW0xshQkxZ4lMa28h35FB1/Z11ApUOe4Es+OKADDJhAnxdZzXcAwIRyPRRPgdsy jTnJno+Kxk9wXLcekxVE =5BdE -----END PGP SIGNATURE----- Merge tag 'for-v3.10' of git://git.infradead.org/battery-2.6 Pull battery updates from Anton Vorontsov: "Highlights: - OpenFirmware/DeviceTree support for the Power Supply core: the core now automatically populates supplied_from hierarchy from the device tree. With these patches chargers and batteries can now lookup each other without the board files support shim. Rhyland Klein at NVIDIA did the work - New ST-Ericsson ABX500 hwmon driver. The driver is heavily using the AB85xx core and depends on some recent changes to it, so that is why the driver comes through the battery tree. It has an appropriate ack from the hwmon maintainer (i.e. Guenter Roeck). Martin Persson at ST-Ericsson and Hongbo Zhang at Linaro authored the driver - Final bits to sync AB85xx ST-Ericsson changes into mainline. The changes touch mfd parts, but these were acked by the appropriate MFD maintainer (ie Samuel Ortiz). Lee Jones at Linaro did most of the work and lead the submission process. Minor changes, but still worth mentioning: - Battery temperature reporting fix for Nokia N900 phones - Versatile Express poweroff driver moved into drivers/power/reset/ - Tree-wide: use devm_kzalloc() where appropriate - Tree-wide: dev_pm_ops cleanups/fixes" * tag 'for-v3.10' of git://git.infradead.org/battery-2.6: (112 commits) pm2301-charger: Fix suspend/resume charger-manager: Use kmemdup instead of kzalloc + memcpy power_supply: Populate supplied_from hierarchy from the device tree power_supply: Add core support for supplied_from power_supply: Define Binding for power-supplies rx51_battery: Fix reporting temperature hwmon: Add ST-Ericsson ABX500 hwmon driver ab8500_bmdata: Export abx500_res_to_temp tables for hwmon ab8500_{bmdata,fg}: Add const attributes to some data arrays ab8500_bmdata: Eliminate CamelCase warning of some variables ab8500_btemp: Make ab8500_btemp_get* interfaces public goldfish_battery: Use resource_size() lp8788-charger: Use PAGE_SIZE for the sysfs read operation max8925_power: Use devm_kzalloc() da9030_battery: Use devm_kzalloc() da9052-battery: Use devm_kzalloc() ds2760_battery: Use devm_kzalloc() ds2780_battery: Use devm_kzalloc() gpio-charger: Use devm_kzalloc() isp1704_charger: Use devm_kzalloc() ...
1274 lines
30 KiB
C
1274 lines
30 KiB
C
/*
|
|
* Copyright 2012 ST Ericsson.
|
|
*
|
|
* Power supply driver for ST Ericsson pm2xxx_charger charger
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/device.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/power_supply.h>
|
|
#include <linux/regulator/consumer.h>
|
|
#include <linux/err.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/mfd/abx500/ab8500.h>
|
|
#include <linux/mfd/abx500/ab8500-bm.h>
|
|
#include <linux/mfd/abx500/ux500_chargalg.h>
|
|
#include <linux/pm2301_charger.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/pm.h>
|
|
|
|
#include "pm2301_charger.h"
|
|
|
|
#define to_pm2xxx_charger_ac_device_info(x) container_of((x), \
|
|
struct pm2xxx_charger, ac_chg)
|
|
#define SLEEP_MIN 50
|
|
#define SLEEP_MAX 100
|
|
#define PM2XXX_AUTOSUSPEND_DELAY 500
|
|
|
|
static int pm2xxx_interrupt_registers[] = {
|
|
PM2XXX_REG_INT1,
|
|
PM2XXX_REG_INT2,
|
|
PM2XXX_REG_INT3,
|
|
PM2XXX_REG_INT4,
|
|
PM2XXX_REG_INT5,
|
|
PM2XXX_REG_INT6,
|
|
};
|
|
|
|
static enum power_supply_property pm2xxx_charger_ac_props[] = {
|
|
POWER_SUPPLY_PROP_HEALTH,
|
|
POWER_SUPPLY_PROP_PRESENT,
|
|
POWER_SUPPLY_PROP_ONLINE,
|
|
POWER_SUPPLY_PROP_VOLTAGE_AVG,
|
|
};
|
|
|
|
static int pm2xxx_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,
|
|
4075,
|
|
4100,
|
|
4125,
|
|
4150,
|
|
4175,
|
|
4200,
|
|
4225,
|
|
4250,
|
|
4275,
|
|
4300,
|
|
};
|
|
|
|
static int pm2xxx_charger_current_map[] = {
|
|
200,
|
|
200,
|
|
400,
|
|
600,
|
|
800,
|
|
1000,
|
|
1200,
|
|
1400,
|
|
1600,
|
|
1800,
|
|
2000,
|
|
2200,
|
|
2400,
|
|
2600,
|
|
2800,
|
|
3000,
|
|
};
|
|
|
|
static const struct i2c_device_id pm2xxx_ident[] = {
|
|
{ "pm2301", 0 },
|
|
{ }
|
|
};
|
|
|
|
static void set_lpn_pin(struct pm2xxx_charger *pm2)
|
|
{
|
|
if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin)) {
|
|
gpio_set_value(pm2->lpn_pin, 1);
|
|
usleep_range(SLEEP_MIN, SLEEP_MAX);
|
|
}
|
|
}
|
|
|
|
static void clear_lpn_pin(struct pm2xxx_charger *pm2)
|
|
{
|
|
if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin))
|
|
gpio_set_value(pm2->lpn_pin, 0);
|
|
}
|
|
|
|
static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val)
|
|
{
|
|
int ret;
|
|
|
|
/* wake up the device */
|
|
pm_runtime_get_sync(pm2->dev);
|
|
|
|
ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg,
|
|
1, val);
|
|
if (ret < 0)
|
|
dev_err(pm2->dev, "Error reading register at 0x%x\n", reg);
|
|
else
|
|
ret = 0;
|
|
|
|
pm_runtime_put_sync(pm2->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val)
|
|
{
|
|
int ret;
|
|
|
|
/* wake up the device */
|
|
pm_runtime_get_sync(pm2->dev);
|
|
|
|
ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg,
|
|
1, &val);
|
|
if (ret < 0)
|
|
dev_err(pm2->dev, "Error writing register at 0x%x\n", reg);
|
|
else
|
|
ret = 0;
|
|
|
|
pm_runtime_put_sync(pm2->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charging_enable_mngt(struct pm2xxx_charger *pm2)
|
|
{
|
|
int ret;
|
|
|
|
/* Enable charging */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2,
|
|
(PM2XXX_CH_AUTO_RESUME_EN | PM2XXX_CHARGER_ENA));
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2)
|
|
{
|
|
int ret;
|
|
|
|
/* Disable SW EOC ctrl */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, PM2XXX_SWCTRL_HW);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
/* Disable charging */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2,
|
|
(PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS));
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
dev_err(pm2->dev, "Overvoltage detected\n");
|
|
pm2->flags.ovv = true;
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
|
|
/* Schedule a new HW failure check */
|
|
queue_delayed_work(pm2->charger_wq, &pm2->check_hw_failure_work, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
dev_dbg(pm2->dev , "20 minutes watchdog expired\n");
|
|
|
|
pm2->ac.wd_expired = true;
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
int ret;
|
|
|
|
switch (val) {
|
|
case PM2XXX_INT1_ITVBATLOWR:
|
|
dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n");
|
|
/* Enable SW EOC ctrl */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG,
|
|
PM2XXX_SWCTRL_SW);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
|
|
return ret;
|
|
}
|
|
break;
|
|
|
|
case PM2XXX_INT1_ITVBATLOWF:
|
|
dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n");
|
|
/* Disable SW EOC ctrl */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG,
|
|
PM2XXX_SWCTRL_HW);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
|
|
return ret;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
dev_err(pm2->dev, "Unknown VBAT level\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charger_bat_disc_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
dev_dbg(pm2->dev, "battery disconnected\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charger_detection(struct pm2xxx_charger *pm2, u8 *val)
|
|
{
|
|
int ret;
|
|
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT2, val);
|
|
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "Charger detection failed\n");
|
|
goto out;
|
|
}
|
|
|
|
*val &= (PM2XXX_INT2_S_ITVPWR1PLUG | PM2XXX_INT2_S_ITVPWR2PLUG);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charger_itv_pwr_plug_mngt(struct pm2xxx_charger *pm2, int val)
|
|
{
|
|
|
|
int ret;
|
|
u8 read_val;
|
|
|
|
/*
|
|
* 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 interrupt source register.
|
|
*/
|
|
ret = pm2xxx_charger_detection(pm2, &read_val);
|
|
|
|
if ((ret == 0) && read_val) {
|
|
pm2->ac.charger_connected = 1;
|
|
pm2->ac_conn = true;
|
|
queue_work(pm2->charger_wq, &pm2->ac_work);
|
|
}
|
|
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charger_itv_pwr_unplug_mngt(struct pm2xxx_charger *pm2,
|
|
int val)
|
|
{
|
|
pm2->ac.charger_connected = 0;
|
|
queue_work(pm2->charger_wq, &pm2->ac_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2_int_reg0(void *pm2_data, int val)
|
|
{
|
|
struct pm2xxx_charger *pm2 = pm2_data;
|
|
int ret = 0;
|
|
|
|
if (val & PM2XXX_INT1_ITVBATLOWR) {
|
|
ret = pm2xxx_charger_vbat_lsig_mngt(pm2,
|
|
PM2XXX_INT1_ITVBATLOWR);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
if (val & PM2XXX_INT1_ITVBATLOWF) {
|
|
ret = pm2xxx_charger_vbat_lsig_mngt(pm2,
|
|
PM2XXX_INT1_ITVBATLOWF);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
if (val & PM2XXX_INT1_ITVBATDISCONNECT) {
|
|
ret = pm2xxx_charger_bat_disc_mngt(pm2,
|
|
PM2XXX_INT1_ITVBATDISCONNECT);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int pm2_int_reg1(void *pm2_data, int val)
|
|
{
|
|
struct pm2xxx_charger *pm2 = pm2_data;
|
|
int ret = 0;
|
|
|
|
if (val & (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)) {
|
|
dev_dbg(pm2->dev , "Main charger plugged\n");
|
|
ret = pm2xxx_charger_itv_pwr_plug_mngt(pm2, val &
|
|
(PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG));
|
|
}
|
|
|
|
if (val &
|
|
(PM2XXX_INT2_ITVPWR1UNPLUG | PM2XXX_INT2_ITVPWR2UNPLUG)) {
|
|
dev_dbg(pm2->dev , "Main charger unplugged\n");
|
|
ret = pm2xxx_charger_itv_pwr_unplug_mngt(pm2, val &
|
|
(PM2XXX_INT2_ITVPWR1UNPLUG |
|
|
PM2XXX_INT2_ITVPWR2UNPLUG));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2_int_reg2(void *pm2_data, int val)
|
|
{
|
|
struct pm2xxx_charger *pm2 = pm2_data;
|
|
int ret = 0;
|
|
|
|
if (val & PM2XXX_INT3_ITAUTOTIMEOUTWD)
|
|
ret = pm2xxx_charger_wd_exp_mngt(pm2, val);
|
|
|
|
if (val & (PM2XXX_INT3_ITCHPRECHARGEWD |
|
|
PM2XXX_INT3_ITCHCCWD | PM2XXX_INT3_ITCHCVWD)) {
|
|
dev_dbg(pm2->dev,
|
|
"Watchdog occured for precharge, CC and CV charge\n");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2_int_reg3(void *pm2_data, int val)
|
|
{
|
|
struct pm2xxx_charger *pm2 = pm2_data;
|
|
int ret = 0;
|
|
|
|
if (val & (PM2XXX_INT4_ITCHARGINGON)) {
|
|
dev_dbg(pm2->dev ,
|
|
"chargind operation has started\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT4_ITVRESUME)) {
|
|
dev_dbg(pm2->dev,
|
|
"battery discharged down to VResume threshold\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT4_ITBATTFULL)) {
|
|
dev_dbg(pm2->dev , "battery fully detected\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT4_ITCVPHASE)) {
|
|
dev_dbg(pm2->dev, "CV phase enter with 0.5C charging\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)) {
|
|
pm2->failure_case = VPWR_OVV;
|
|
ret = pm2xxx_charger_ovv_mngt(pm2, val &
|
|
(PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV));
|
|
dev_dbg(pm2->dev, "VPWR/VSYSTEM overvoltage detected\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT4_S_ITBATTEMPCOLD |
|
|
PM2XXX_INT4_S_ITBATTEMPHOT)) {
|
|
ret = pm2xxx_charger_batt_therm_mngt(pm2, val &
|
|
(PM2XXX_INT4_S_ITBATTEMPCOLD |
|
|
PM2XXX_INT4_S_ITBATTEMPHOT));
|
|
dev_dbg(pm2->dev, "BTEMP is too Low/High\n");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2_int_reg4(void *pm2_data, int val)
|
|
{
|
|
struct pm2xxx_charger *pm2 = pm2_data;
|
|
int ret = 0;
|
|
|
|
if (val & PM2XXX_INT5_ITVSYSTEMOVV) {
|
|
pm2->failure_case = VSYSTEM_OVV;
|
|
ret = pm2xxx_charger_ovv_mngt(pm2, val &
|
|
PM2XXX_INT5_ITVSYSTEMOVV);
|
|
dev_dbg(pm2->dev, "VSYSTEM overvoltage detected\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT5_ITTHERMALWARNINGFALL |
|
|
PM2XXX_INT5_ITTHERMALWARNINGRISE |
|
|
PM2XXX_INT5_ITTHERMALSHUTDOWNFALL |
|
|
PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)) {
|
|
dev_dbg(pm2->dev, "BTEMP die temperature is too Low/High\n");
|
|
ret = pm2xxx_charger_die_therm_mngt(pm2, val &
|
|
(PM2XXX_INT5_ITTHERMALWARNINGFALL |
|
|
PM2XXX_INT5_ITTHERMALWARNINGRISE |
|
|
PM2XXX_INT5_ITTHERMALSHUTDOWNFALL |
|
|
PM2XXX_INT5_ITTHERMALSHUTDOWNRISE));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2_int_reg5(void *pm2_data, int val)
|
|
{
|
|
struct pm2xxx_charger *pm2 = pm2_data;
|
|
int ret = 0;
|
|
|
|
if (val & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) {
|
|
dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n");
|
|
}
|
|
|
|
if (val & (PM2XXX_INT6_ITVPWR2VALIDRISE |
|
|
PM2XXX_INT6_ITVPWR1VALIDRISE |
|
|
PM2XXX_INT6_ITVPWR2VALIDFALL |
|
|
PM2XXX_INT6_ITVPWR1VALIDFALL)) {
|
|
dev_dbg(pm2->dev, "Falling/Rising edge on WPWR1/2\n");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t pm2xxx_irq_int(int irq, void *data)
|
|
{
|
|
struct pm2xxx_charger *pm2 = data;
|
|
struct pm2xxx_interrupts *interrupt = pm2->pm2_int;
|
|
int i;
|
|
|
|
/* wake up the device */
|
|
pm_runtime_get_sync(pm2->dev);
|
|
|
|
do {
|
|
for (i = 0; i < PM2XXX_NUM_INT_REG; i++) {
|
|
pm2xxx_reg_read(pm2,
|
|
pm2xxx_interrupt_registers[i],
|
|
&(interrupt->reg[i]));
|
|
|
|
if (interrupt->reg[i] > 0)
|
|
interrupt->handler[i](pm2, interrupt->reg[i]);
|
|
}
|
|
} while (gpio_get_value(pm2->pdata->gpio_irq_number) == 0);
|
|
|
|
pm_runtime_mark_last_busy(pm2->dev);
|
|
pm_runtime_put_autosuspend(pm2->dev);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int pm2xxx_charger_get_ac_cv(struct pm2xxx_charger *pm2)
|
|
{
|
|
int ret = 0;
|
|
u8 val;
|
|
|
|
if (pm2->ac.charger_connected && pm2->ac.charger_online) {
|
|
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
if (val & PM2XXX_INT4_S_ITCVPHASE)
|
|
ret = PM2XXX_CONST_VOLT;
|
|
else
|
|
ret = PM2XXX_CONST_CURR;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_current_to_regval(int curr)
|
|
{
|
|
int i;
|
|
|
|
if (curr < pm2xxx_charger_current_map[0])
|
|
return 0;
|
|
|
|
for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_current_map); i++) {
|
|
if (curr < pm2xxx_charger_current_map[i])
|
|
return (i - 1);
|
|
}
|
|
|
|
i = ARRAY_SIZE(pm2xxx_charger_current_map) - 1;
|
|
if (curr == pm2xxx_charger_current_map[i])
|
|
return i;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int pm2xxx_voltage_to_regval(int curr)
|
|
{
|
|
int i;
|
|
|
|
if (curr < pm2xxx_charger_voltage_map[0])
|
|
return 0;
|
|
|
|
for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_voltage_map); i++) {
|
|
if (curr < pm2xxx_charger_voltage_map[i])
|
|
return i - 1;
|
|
}
|
|
|
|
i = ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1;
|
|
if (curr == pm2xxx_charger_voltage_map[i])
|
|
return i;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int pm2xxx_charger_update_charger_current(struct ux500_charger *charger,
|
|
int ich_out)
|
|
{
|
|
int ret;
|
|
int curr_index;
|
|
struct pm2xxx_charger *pm2;
|
|
u8 val;
|
|
|
|
if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS)
|
|
pm2 = to_pm2xxx_charger_ac_device_info(charger);
|
|
else
|
|
return -ENXIO;
|
|
|
|
curr_index = pm2xxx_current_to_regval(ich_out);
|
|
if (curr_index < 0) {
|
|
dev_err(pm2->dev,
|
|
"Charger current too high, charging not started\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val);
|
|
if (ret >= 0) {
|
|
val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK;
|
|
val |= curr_index;
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev,
|
|
"%s write failed\n", __func__);
|
|
}
|
|
}
|
|
else
|
|
dev_err(pm2->dev, "%s read failed\n", __func__);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charger_ac_get_property(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct pm2xxx_charger *pm2;
|
|
|
|
pm2 = to_pm2xxx_charger_ac_device_info(psy_to_ux500_charger(psy));
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_HEALTH:
|
|
if (pm2->flags.mainextchnotok)
|
|
val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
|
|
else if (pm2->ac.wd_expired)
|
|
val->intval = POWER_SUPPLY_HEALTH_DEAD;
|
|
else if (pm2->flags.main_thermal_prot)
|
|
val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
|
|
else if (pm2->flags.ovv)
|
|
val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
|
|
else
|
|
val->intval = POWER_SUPPLY_HEALTH_GOOD;
|
|
break;
|
|
case POWER_SUPPLY_PROP_ONLINE:
|
|
val->intval = pm2->ac.charger_online;
|
|
break;
|
|
case POWER_SUPPLY_PROP_PRESENT:
|
|
val->intval = pm2->ac.charger_connected;
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
|
|
pm2->ac.cv_active = pm2xxx_charger_get_ac_cv(pm2);
|
|
val->intval = pm2->ac.cv_active;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_charging_init(struct pm2xxx_charger *pm2)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* enable CC and CV watchdog */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG3,
|
|
(PM2XXX_CH_WD_CV_PHASE_60MIN | PM2XXX_CH_WD_CC_PHASE_60MIN));
|
|
if( ret < 0)
|
|
return ret;
|
|
|
|
/* enable precharge watchdog */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG4,
|
|
PM2XXX_CH_WD_PRECH_PHASE_60MIN);
|
|
|
|
/* Disable auto timeout */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG5,
|
|
PM2XXX_CH_WD_AUTO_TIMEOUT_20MIN);
|
|
|
|
/*
|
|
* EOC current level = 100mA
|
|
* Precharge current level = 100mA
|
|
* CC current level = 1000mA
|
|
*/
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6,
|
|
(PM2XXX_DIR_CH_CC_CURRENT_1000MA |
|
|
PM2XXX_CH_PRECH_CURRENT_100MA |
|
|
PM2XXX_CH_EOC_CURRENT_100MA));
|
|
|
|
/*
|
|
* recharge threshold = 3.8V
|
|
* Precharge to CC threshold = 2.9V
|
|
*/
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG7,
|
|
(PM2XXX_CH_PRECH_VOL_2_9 | PM2XXX_CH_VRESUME_VOL_3_8));
|
|
|
|
/* float voltage charger level = 4.2V */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8,
|
|
PM2XXX_CH_VOLT_4_2);
|
|
|
|
/* Voltage drop between VBAT and VSYS in HW charging = 300mV */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG9,
|
|
(PM2XXX_CH_150MV_DROP_300MV | PM2XXX_CHARCHING_INFO_DIS |
|
|
PM2XXX_CH_CC_REDUCED_CURRENT_IDENT |
|
|
PM2XXX_CH_CC_MODEDROP_DIS));
|
|
|
|
/* Input charger level of over voltage = 10V */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR2,
|
|
PM2XXX_VPWR2_OVV_10);
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR1,
|
|
PM2XXX_VPWR1_OVV_10);
|
|
|
|
/* Input charger drop */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR2,
|
|
(PM2XXX_VPWR2_HW_OPT_DIS | PM2XXX_VPWR2_VALID_DIS |
|
|
PM2XXX_VPWR2_DROP_DIS));
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR1,
|
|
(PM2XXX_VPWR1_HW_OPT_DIS | PM2XXX_VPWR1_VALID_DIS |
|
|
PM2XXX_VPWR1_DROP_DIS));
|
|
|
|
/* Disable battery low monitoring */
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_LOW_LEV_COMP_REG,
|
|
PM2XXX_VBAT_LOW_MONITORING_ENA);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charger_ac_en(struct ux500_charger *charger,
|
|
int enable, int vset, int iset)
|
|
{
|
|
int ret;
|
|
int volt_index;
|
|
int curr_index;
|
|
u8 val;
|
|
|
|
struct pm2xxx_charger *pm2 = to_pm2xxx_charger_ac_device_info(charger);
|
|
|
|
if (enable) {
|
|
if (!pm2->ac.charger_connected) {
|
|
dev_dbg(pm2->dev, "AC charger not connected\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset);
|
|
if (!pm2->vddadc_en_ac) {
|
|
regulator_enable(pm2->regu);
|
|
pm2->vddadc_en_ac = true;
|
|
}
|
|
|
|
ret = pm2xxx_charging_init(pm2);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s charging init failed\n",
|
|
__func__);
|
|
goto error_occured;
|
|
}
|
|
|
|
volt_index = pm2xxx_voltage_to_regval(vset);
|
|
curr_index = pm2xxx_current_to_regval(iset);
|
|
|
|
if (volt_index < 0 || curr_index < 0) {
|
|
dev_err(pm2->dev,
|
|
"Charger voltage or current too high, "
|
|
"charging not started\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG8, &val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
|
|
goto error_occured;
|
|
}
|
|
val &= ~PM2XXX_CH_VOLT_MASK;
|
|
val |= volt_index;
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
|
|
goto error_occured;
|
|
}
|
|
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
|
|
goto error_occured;
|
|
}
|
|
val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK;
|
|
val |= curr_index;
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
|
|
goto error_occured;
|
|
}
|
|
|
|
if (!pm2->bat->enable_overshoot) {
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_LED_CTRL_REG, &val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx read failed\n",
|
|
__func__);
|
|
goto error_occured;
|
|
}
|
|
val |= PM2XXX_ANTI_OVERSHOOT_EN;
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG, val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx write failed\n",
|
|
__func__);
|
|
goto error_occured;
|
|
}
|
|
}
|
|
|
|
ret = pm2xxx_charging_enable_mngt(pm2);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "Failed to enable"
|
|
"pm2xxx ac charger\n");
|
|
goto error_occured;
|
|
}
|
|
|
|
pm2->ac.charger_online = 1;
|
|
} else {
|
|
pm2->ac.charger_online = 0;
|
|
pm2->ac.wd_expired = false;
|
|
|
|
/* Disable regulator if enabled */
|
|
if (pm2->vddadc_en_ac) {
|
|
regulator_disable(pm2->regu);
|
|
pm2->vddadc_en_ac = false;
|
|
}
|
|
|
|
ret = pm2xxx_charging_disable_mngt(pm2);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "failed to disable"
|
|
"pm2xxx ac charger\n");
|
|
goto error_occured;
|
|
}
|
|
|
|
dev_dbg(pm2->dev, "PM2301: " "Disabled AC charging\n");
|
|
}
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
|
|
error_occured:
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_charger_watchdog_kick(struct ux500_charger *charger)
|
|
{
|
|
int ret;
|
|
struct pm2xxx_charger *pm2;
|
|
|
|
if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS)
|
|
pm2 = to_pm2xxx_charger_ac_device_info(charger);
|
|
else
|
|
return -ENXIO;
|
|
|
|
ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_WD_KICK, WD_TIMER);
|
|
if (ret)
|
|
dev_err(pm2->dev, "Failed to kick WD!\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void pm2xxx_charger_ac_work(struct work_struct *work)
|
|
{
|
|
struct pm2xxx_charger *pm2 = container_of(work,
|
|
struct pm2xxx_charger, ac_work);
|
|
|
|
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present");
|
|
};
|
|
|
|
static void pm2xxx_charger_check_hw_failure_work(struct work_struct *work)
|
|
{
|
|
u8 reg_value;
|
|
|
|
struct pm2xxx_charger *pm2 = container_of(work,
|
|
struct pm2xxx_charger, check_hw_failure_work.work);
|
|
|
|
if (pm2->flags.ovv) {
|
|
pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, ®_value);
|
|
|
|
if (!(reg_value & (PM2XXX_INT4_S_ITVPWR1OVV |
|
|
PM2XXX_INT4_S_ITVPWR2OVV))) {
|
|
pm2->flags.ovv = false;
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
}
|
|
}
|
|
|
|
/* If we still have a failure, schedule a new check */
|
|
if (pm2->flags.ovv) {
|
|
queue_delayed_work(pm2->charger_wq,
|
|
&pm2->check_hw_failure_work, round_jiffies(HZ));
|
|
}
|
|
}
|
|
|
|
static void pm2xxx_charger_check_main_thermal_prot_work(
|
|
struct work_struct *work)
|
|
{
|
|
int ret;
|
|
u8 val;
|
|
|
|
struct pm2xxx_charger *pm2 = container_of(work, struct pm2xxx_charger,
|
|
check_main_thermal_prot_work);
|
|
|
|
/* Check if die temp warning is still active */
|
|
ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT5, &val);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
|
|
return;
|
|
}
|
|
if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGRISE
|
|
| PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE))
|
|
pm2->flags.main_thermal_prot = true;
|
|
else if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGFALL
|
|
| PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL))
|
|
pm2->flags.main_thermal_prot = false;
|
|
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
}
|
|
|
|
static struct pm2xxx_interrupts pm2xxx_int = {
|
|
.handler[0] = pm2_int_reg0,
|
|
.handler[1] = pm2_int_reg1,
|
|
.handler[2] = pm2_int_reg2,
|
|
.handler[3] = pm2_int_reg3,
|
|
.handler[4] = pm2_int_reg4,
|
|
.handler[5] = pm2_int_reg5,
|
|
};
|
|
|
|
static struct pm2xxx_irq pm2xxx_charger_irq[] = {
|
|
{"PM2XXX_IRQ_INT", pm2xxx_irq_int},
|
|
};
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
|
|
static int pm2xxx_wall_charger_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c_client = to_i2c_client(dev);
|
|
struct pm2xxx_charger *pm2;
|
|
|
|
pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client);
|
|
set_lpn_pin(pm2);
|
|
|
|
/* If we still have a HW failure, schedule a new check */
|
|
if (pm2->flags.ovv)
|
|
queue_delayed_work(pm2->charger_wq,
|
|
&pm2->check_hw_failure_work, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pm2xxx_wall_charger_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *i2c_client = to_i2c_client(dev);
|
|
struct pm2xxx_charger *pm2;
|
|
|
|
pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client);
|
|
clear_lpn_pin(pm2);
|
|
|
|
/* Cancel any pending HW failure check */
|
|
if (delayed_work_pending(&pm2->check_hw_failure_work))
|
|
cancel_delayed_work(&pm2->check_hw_failure_work);
|
|
|
|
flush_work(&pm2->ac_work);
|
|
flush_work(&pm2->check_main_thermal_prot_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_RUNTIME
|
|
|
|
static int pm2xxx_runtime_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev);
|
|
struct pm2xxx_charger *pm2;
|
|
int ret = 0;
|
|
|
|
pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client);
|
|
if (!pm2) {
|
|
dev_err(pm2->dev, "no pm2xxx_charger data supplied\n");
|
|
ret = -EINVAL;
|
|
return ret;
|
|
}
|
|
|
|
clear_lpn_pin(pm2);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_runtime_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev);
|
|
struct pm2xxx_charger *pm2;
|
|
int ret = 0;
|
|
|
|
pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client);
|
|
if (!pm2) {
|
|
dev_err(pm2->dev, "no pm2xxx_charger data supplied\n");
|
|
ret = -EINVAL;
|
|
return ret;
|
|
}
|
|
|
|
if (gpio_is_valid(pm2->lpn_pin) && gpio_get_value(pm2->lpn_pin) == 0)
|
|
set_lpn_pin(pm2);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
static const struct dev_pm_ops pm2xxx_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(pm2xxx_wall_charger_suspend,
|
|
pm2xxx_wall_charger_resume)
|
|
SET_RUNTIME_PM_OPS(pm2xxx_runtime_suspend, pm2xxx_runtime_resume, NULL)
|
|
};
|
|
#define PM2XXX_PM_OPS (&pm2xxx_pm_ops)
|
|
#else
|
|
#define PM2XXX_PM_OPS NULL
|
|
#endif
|
|
|
|
static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data;
|
|
struct pm2xxx_charger *pm2;
|
|
int ret = 0;
|
|
u8 val;
|
|
int i;
|
|
|
|
pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL);
|
|
if (!pm2) {
|
|
dev_err(pm2->dev, "pm2xxx_charger allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* get parent data */
|
|
pm2->dev = &i2c_client->dev;
|
|
|
|
pm2->pm2_int = &pm2xxx_int;
|
|
|
|
/* get charger spcific platform data */
|
|
if (!pl_data->wall_charger) {
|
|
dev_err(pm2->dev, "no charger platform data supplied\n");
|
|
ret = -EINVAL;
|
|
goto free_device_info;
|
|
}
|
|
|
|
pm2->pdata = pl_data->wall_charger;
|
|
|
|
/* get battery specific platform data */
|
|
if (!pl_data->battery) {
|
|
dev_err(pm2->dev, "no battery platform data supplied\n");
|
|
ret = -EINVAL;
|
|
goto free_device_info;
|
|
}
|
|
|
|
pm2->bat = pl_data->battery;
|
|
|
|
if (!i2c_check_functionality(i2c_client->adapter,
|
|
I2C_FUNC_SMBUS_BYTE_DATA |
|
|
I2C_FUNC_SMBUS_READ_WORD_DATA)) {
|
|
ret = -ENODEV;
|
|
dev_info(pm2->dev, "pm2301 i2c_check_functionality failed\n");
|
|
goto free_device_info;
|
|
}
|
|
|
|
pm2->config.pm2xxx_i2c = i2c_client;
|
|
pm2->config.pm2xxx_id = (struct i2c_device_id *) id;
|
|
i2c_set_clientdata(i2c_client, pm2);
|
|
|
|
/* AC supply */
|
|
/* power_supply base class */
|
|
pm2->ac_chg.psy.name = pm2->pdata->label;
|
|
pm2->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS;
|
|
pm2->ac_chg.psy.properties = pm2xxx_charger_ac_props;
|
|
pm2->ac_chg.psy.num_properties = ARRAY_SIZE(pm2xxx_charger_ac_props);
|
|
pm2->ac_chg.psy.get_property = pm2xxx_charger_ac_get_property;
|
|
pm2->ac_chg.psy.supplied_to = pm2->pdata->supplied_to;
|
|
pm2->ac_chg.psy.num_supplicants = pm2->pdata->num_supplicants;
|
|
/* pm2xxx_charger sub-class */
|
|
pm2->ac_chg.ops.enable = &pm2xxx_charger_ac_en;
|
|
pm2->ac_chg.ops.kick_wd = &pm2xxx_charger_watchdog_kick;
|
|
pm2->ac_chg.ops.update_curr = &pm2xxx_charger_update_charger_current;
|
|
pm2->ac_chg.max_out_volt = pm2xxx_charger_voltage_map[
|
|
ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1];
|
|
pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[
|
|
ARRAY_SIZE(pm2xxx_charger_current_map) - 1];
|
|
pm2->ac_chg.wdt_refresh = WD_KICK_INTERVAL;
|
|
pm2->ac_chg.enabled = true;
|
|
pm2->ac_chg.external = true;
|
|
|
|
/* Create a work queue for the charger */
|
|
pm2->charger_wq =
|
|
create_singlethread_workqueue("pm2xxx_charger_wq");
|
|
if (pm2->charger_wq == NULL) {
|
|
dev_err(pm2->dev, "failed to create work queue\n");
|
|
goto free_device_info;
|
|
}
|
|
|
|
/* Init work for charger detection */
|
|
INIT_WORK(&pm2->ac_work, pm2xxx_charger_ac_work);
|
|
|
|
/* Init work for checking HW status */
|
|
INIT_WORK(&pm2->check_main_thermal_prot_work,
|
|
pm2xxx_charger_check_main_thermal_prot_work);
|
|
|
|
/* Init work for HW failure check */
|
|
INIT_DEFERRABLE_WORK(&pm2->check_hw_failure_work,
|
|
pm2xxx_charger_check_hw_failure_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
|
|
*/
|
|
pm2->regu = regulator_get(pm2->dev, "vddadc");
|
|
if (IS_ERR(pm2->regu)) {
|
|
ret = PTR_ERR(pm2->regu);
|
|
dev_err(pm2->dev, "failed to get vddadc regulator\n");
|
|
goto free_charger_wq;
|
|
}
|
|
|
|
/* Register AC charger class */
|
|
ret = power_supply_register(pm2->dev, &pm2->ac_chg.psy);
|
|
if (ret) {
|
|
dev_err(pm2->dev, "failed to register AC charger\n");
|
|
goto free_regulator;
|
|
}
|
|
|
|
/* Register interrupts */
|
|
ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number),
|
|
NULL,
|
|
pm2xxx_charger_irq[0].isr,
|
|
pm2->pdata->irq_type,
|
|
pm2xxx_charger_irq[0].name, pm2);
|
|
|
|
if (ret != 0) {
|
|
dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n",
|
|
pm2xxx_charger_irq[0].name,
|
|
gpio_to_irq(pm2->pdata->gpio_irq_number), ret);
|
|
goto unregister_pm2xxx_charger;
|
|
}
|
|
|
|
ret = pm_runtime_set_active(pm2->dev);
|
|
if (ret)
|
|
dev_err(pm2->dev, "set active Error\n");
|
|
|
|
pm_runtime_enable(pm2->dev);
|
|
pm_runtime_set_autosuspend_delay(pm2->dev, PM2XXX_AUTOSUSPEND_DELAY);
|
|
pm_runtime_use_autosuspend(pm2->dev);
|
|
pm_runtime_resume(pm2->dev);
|
|
|
|
/* pm interrupt can wake up system */
|
|
ret = enable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
|
|
if (ret) {
|
|
dev_err(pm2->dev, "failed to set irq wake\n");
|
|
goto unregister_pm2xxx_interrupt;
|
|
}
|
|
|
|
mutex_init(&pm2->lock);
|
|
|
|
if (gpio_is_valid(pm2->pdata->lpn_gpio)) {
|
|
/* get lpn GPIO from platform data */
|
|
pm2->lpn_pin = pm2->pdata->lpn_gpio;
|
|
|
|
/*
|
|
* Charger detection mechanism requires pulling up the LPN pin
|
|
* while i2c communication if Charger is not connected
|
|
* LPN pin of PM2301 is GPIO60 of AB9540
|
|
*/
|
|
ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio");
|
|
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n");
|
|
goto disable_pm2_irq_wake;
|
|
}
|
|
ret = gpio_direction_output(pm2->lpn_pin, 0);
|
|
if (ret < 0) {
|
|
dev_err(pm2->dev, "pm2301_lpm_gpio direction failed\n");
|
|
goto free_gpio;
|
|
}
|
|
set_lpn_pin(pm2);
|
|
}
|
|
|
|
/* read interrupt registers */
|
|
for (i = 0; i < PM2XXX_NUM_INT_REG; i++)
|
|
pm2xxx_reg_read(pm2,
|
|
pm2xxx_interrupt_registers[i],
|
|
&val);
|
|
|
|
ret = pm2xxx_charger_detection(pm2, &val);
|
|
|
|
if ((ret == 0) && val) {
|
|
pm2->ac.charger_connected = 1;
|
|
ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
|
|
AB8500_MAIN_CH_DET);
|
|
pm2->ac_conn = true;
|
|
power_supply_changed(&pm2->ac_chg.psy);
|
|
sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present");
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_gpio:
|
|
if (gpio_is_valid(pm2->lpn_pin))
|
|
gpio_free(pm2->lpn_pin);
|
|
disable_pm2_irq_wake:
|
|
disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
|
|
unregister_pm2xxx_interrupt:
|
|
/* disable interrupt */
|
|
free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2);
|
|
unregister_pm2xxx_charger:
|
|
/* unregister power supply */
|
|
power_supply_unregister(&pm2->ac_chg.psy);
|
|
free_regulator:
|
|
/* disable the regulator */
|
|
regulator_put(pm2->regu);
|
|
free_charger_wq:
|
|
destroy_workqueue(pm2->charger_wq);
|
|
free_device_info:
|
|
kfree(pm2);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
|
|
{
|
|
struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client);
|
|
|
|
/* Disable pm_runtime */
|
|
pm_runtime_disable(pm2->dev);
|
|
/* Disable AC charging */
|
|
pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0);
|
|
|
|
/* Disable wake by pm interrupt */
|
|
disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
|
|
|
|
/* Disable interrupts */
|
|
free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2);
|
|
|
|
/* Delete the work queue */
|
|
destroy_workqueue(pm2->charger_wq);
|
|
|
|
flush_scheduled_work();
|
|
|
|
/* disable the regulator */
|
|
regulator_put(pm2->regu);
|
|
|
|
power_supply_unregister(&pm2->ac_chg.psy);
|
|
|
|
if (gpio_is_valid(pm2->lpn_pin))
|
|
gpio_free(pm2->lpn_pin);
|
|
|
|
kfree(pm2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id pm2xxx_id[] = {
|
|
{ "pm2301", 0 },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, pm2xxx_id);
|
|
|
|
static struct i2c_driver pm2xxx_charger_driver = {
|
|
.probe = pm2xxx_wall_charger_probe,
|
|
.remove = pm2xxx_wall_charger_remove,
|
|
.driver = {
|
|
.name = "pm2xxx-wall_charger",
|
|
.owner = THIS_MODULE,
|
|
.pm = PM2XXX_PM_OPS,
|
|
},
|
|
.id_table = pm2xxx_id,
|
|
};
|
|
|
|
static int __init pm2xxx_charger_init(void)
|
|
{
|
|
return i2c_add_driver(&pm2xxx_charger_driver);
|
|
}
|
|
|
|
static void __exit pm2xxx_charger_exit(void)
|
|
{
|
|
i2c_del_driver(&pm2xxx_charger_driver);
|
|
}
|
|
|
|
device_initcall_sync(pm2xxx_charger_init);
|
|
module_exit(pm2xxx_charger_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay");
|
|
MODULE_ALIAS("platform:pm2xxx-charger");
|
|
MODULE_DESCRIPTION("PM2xxx charger management driver");
|