--- /dev/null
+/*
+ * rk818 charger driver
+ *
+ * Copyright (C) 2016 Rockchip Electronics Co., Ltd
+ * chenjh <chenjh@rock-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/extcon.h>
+#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/mfd/rk808.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/power/rk_usbbc.h>
+#include <linux/regmap.h>
+#include <linux/rtc.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+
+static int dbg_enable = 0;
+module_param_named(dbg_level, dbg_enable, int, 0644);
+
+#define DBG(args...) \
+ do { \
+ if (dbg_enable) { \
+ pr_info(args); \
+ } \
+ } while (0)
+
+#define CG_INFO(fmt, args...) pr_info("rk818-charger: "fmt, ##args)
+
+#define DEFAULT_CHRG_CURRENT 1400
+#define DEFAULT_INPUT_CURRENT 2000
+#define DEFAULT_CHRG_VOLTAGE 4200
+#define SAMPLE_RES_10MR 10
+#define SAMPLE_RES_20MR 20
+#define SAMPLE_RES_DIV1 1
+#define SAMPLE_RES_DIV2 2
+
+/* RK818_USB_CTRL_REG */
+#define INPUT_CUR450MA (0x00)
+#define INPUT_CUR1500MA (0x05)
+#define INPUT_CUR_MSK (0x0f)
+/* RK818_CHRG_CTRL_REG3 */
+#define CHRG_FINISH_MODE_MSK BIT(5)
+#define CHRG_FINISH_ANA_SIGNAL (0)
+#define CHRG_FINISH_DIG_SIGNAL BIT(5)
+/* RK818_SUP_STS_REG */
+#define BAT_EXS BIT(7)
+#define USB_VLIMIT_EN BIT(3)
+#define USB_CLIMIT_EN BIT(2)
+/* RK818_CHRG_CTRL_REG1 */
+#define CHRG_EN BIT(7)
+/* RK818_INT_STS_MSK_REG2 */
+#define CHRG_CVTLMT_INT_MSK BIT(6)
+#define PLUG_OUT_MSK BIT(1)
+#define PLUG_IN_MSK BIT(0)
+/* RK818_VB_MON_REG */
+#define PLUG_IN_STS BIT(6)
+/* RK818_TS_CTRL_REG */
+#define GG_EN BIT(7)
+
+#define DRIVER_VERSION "1.0"
+
+extern void rk_send_wakeup_key(void);
+
+static const u16 chrg_vol_sel_array[] = {
+ 4050, 4100, 4150, 4200, 4250, 4300, 4350
+};
+
+static const u16 chrg_cur_sel_array[] = {
+ 1000, 1200, 1400, 1600, 1800, 2000, 2250, 2400, 2600, 2800, 3000
+};
+
+static const u16 chrg_cur_input_array[] = {
+ 450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
+};
+
+enum charger_t {
+ USB_TYPE_UNKNOWN_CHARGER,
+ USB_TYPE_NONE_CHARGER,
+ USB_TYPE_USB_CHARGER,
+ USB_TYPE_AC_CHARGER,
+ USB_TYPE_CDP_CHARGER,
+ DC_TYPE_DC_CHARGER,
+ DC_TYPE_NONE_CHARGER,
+};
+
+struct charger_platform_data {
+ u32 max_input_current;
+ u32 max_chrg_current;
+ u32 max_chrg_voltage;
+ u32 pwroff_vol;
+ u32 power_dc2otg;
+ u32 dc_det_level;
+ int dc_det_pin;
+ bool support_dc_det;
+ int virtual_power;
+ int sample_res;
+ bool extcon;
+};
+
+struct rk818_charger {
+ struct platform_device *pdev;
+ struct device *dev;
+ struct rk808 *rk818;
+ struct regmap *regmap;
+ struct power_supply *ac_psy;
+ struct power_supply *usb_psy;
+ struct extcon_dev *cable_edev;
+ struct charger_platform_data *pdata;
+ struct workqueue_struct *usb_charger_wq;
+ struct workqueue_struct *dc_charger_wq;
+ struct workqueue_struct *finish_sig_wq;
+ struct delayed_work dc_work;
+ struct delayed_work usb_work;
+ struct delayed_work host_work;
+ struct delayed_work discnt_work;
+ struct delayed_work finish_sig_work;
+ struct delayed_work irq_work;
+ struct notifier_block bc_nb;
+ struct notifier_block cable_cg_nb;
+ struct notifier_block cable_host_nb;
+ struct notifier_block cable_discnt_nb;
+ unsigned int bc_event;
+ enum charger_t usb_charger;
+ enum charger_t dc_charger;
+ u8 ac_in;
+ u8 usb_in;
+ u8 otg_in;
+ u8 dc_in;
+ u8 prop_status;
+ u8 chrg_voltage;
+ u8 chrg_input;
+ u8 chrg_current;
+ u8 res_div;
+ u8 int_msk_reg2;
+ u8 plug_in_irq;
+ u8 plug_out_irq;
+};
+
+static int rk818_reg_read(struct rk818_charger *cg, u8 reg)
+{
+ int ret, val;
+
+ ret = regmap_read(cg->regmap, reg, &val);
+ if (ret)
+ dev_err(cg->dev, "i2c read reg: 0x%2x failed\n", reg);
+
+ return val;
+}
+
+static int rk818_reg_write(struct rk818_charger *cg, u8 reg, u8 buf)
+{
+ int ret;
+
+ ret = regmap_write(cg->regmap, reg, buf);
+ if (ret)
+ dev_err(cg->dev, "i2c write reg: 0x%2x failed\n", reg);
+
+ return ret;
+}
+
+static int rk818_reg_set_bits(struct rk818_charger *cg, u8 reg, u8 mask, u8 buf)
+{
+ int ret;
+
+ ret = regmap_update_bits(cg->regmap, reg, mask, buf);
+ if (ret)
+ dev_err(cg->dev, "i2c set reg: 0x%2x failed\n", reg);
+
+ return ret;
+}
+
+static int rk818_reg_clear_bits(struct rk818_charger *cg, u8 reg, u8 mask)
+{
+ int ret;
+
+ ret = regmap_update_bits(cg->regmap, reg, mask, 0);
+ if (ret)
+ dev_err(cg->dev, "i2c clr reg: 0x%02x failed\n", reg);
+
+ return ret;
+}
+
+static int rk818_cg_online(struct rk818_charger *cg)
+{
+ return (cg->ac_in | cg->usb_in | cg->dc_in);
+}
+
+static int rk818_cg_get_dsoc(struct rk818_charger *cg)
+{
+ return rk818_reg_read(cg, RK818_SOC_REG);
+}
+
+static int rk818_cg_get_avg_current(struct rk818_charger *cg)
+{
+ int cur, val = 0;
+
+ val |= rk818_reg_read(cg, RK818_BAT_CUR_AVG_REGL) << 0;
+ val |= rk818_reg_read(cg, RK818_BAT_CUR_AVG_REGH) << 8;
+
+ if (val & 0x800)
+ val -= 4096;
+ cur = val * cg->res_div * 1506 / 1000;
+
+ return cur;
+}
+
+static u64 get_boot_sec(void)
+{
+ struct timespec ts;
+
+ get_monotonic_boottime(&ts);
+
+ return ts.tv_sec;
+}
+
+static int rk818_cg_lowpwr_check(struct rk818_charger *cg)
+{
+ u8 buf;
+ static u64 time;
+ int current_avg, dsoc, fake_offline = 0;
+
+ buf = rk818_reg_read(cg, RK818_TS_CTRL_REG);
+ if (!(buf & GG_EN))
+ return fake_offline;
+
+ dsoc = rk818_cg_get_dsoc(cg);
+ current_avg = rk818_cg_get_avg_current(cg);
+ if ((current_avg < 0) && (dsoc == 0)) {
+ if (!time)
+ time = get_boot_sec();
+ if ((get_boot_sec() - time) >= 30) {
+ fake_offline = 1;
+ CG_INFO("low power....soc=%d, current=%d\n",
+ dsoc, current_avg);
+ }
+ } else {
+ time = 0;
+ fake_offline = 0;
+ }
+
+ DBG("<%s>. t=%lld, dsoc=%d, current=%d, fake_offline=%d\n",
+ __func__, get_boot_sec() - time, dsoc, current_avg, fake_offline);
+
+ return fake_offline;
+}
+
+static enum power_supply_property rk818_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_STATUS,
+};
+
+static enum power_supply_property rk818_usb_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_STATUS,
+};
+
+static int rk818_cg_ac_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct rk818_charger *cg = power_supply_get_drvdata(psy);
+ int fake_offline = 0, ret = 0;
+
+ if (rk818_cg_online(cg))
+ fake_offline = rk818_cg_lowpwr_check(cg);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ if (cg->pdata->virtual_power)
+ val->intval = 1;
+ else if (fake_offline)
+ val->intval = 0;
+ else
+ val->intval = (cg->ac_in | cg->dc_in);
+
+ DBG("report online: %d\n", val->intval);
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ if (cg->pdata->virtual_power)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (fake_offline)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ val->intval = cg->prop_status;
+
+ DBG("report prop: %d\n", val->intval);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int rk818_cg_usb_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct rk818_charger *cg = power_supply_get_drvdata(psy);
+ int fake_offline, ret = 0;
+
+ if (rk818_cg_online(cg))
+ fake_offline = rk818_cg_lowpwr_check(cg);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ if (cg->pdata->virtual_power)
+ val->intval = 1;
+ else if (fake_offline)
+ val->intval = 0;
+ else
+ val->intval = cg->usb_in;
+
+ DBG("report online: %d\n", val->intval);
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ if (cg->pdata->virtual_power)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (fake_offline)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ val->intval = cg->prop_status;
+
+ DBG("report prop: %d\n", val->intval);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static const struct power_supply_desc rk818_ac_desc = {
+ .name = "ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = rk818_ac_props,
+ .num_properties = ARRAY_SIZE(rk818_ac_props),
+ .get_property = rk818_cg_ac_get_property,
+};
+
+static const struct power_supply_desc rk818_usb_desc = {
+ .name = "usb",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .properties = rk818_usb_props,
+ .num_properties = ARRAY_SIZE(rk818_usb_props),
+ .get_property = rk818_cg_usb_get_property,
+};
+
+static int rk818_cg_init_power_supply(struct rk818_charger *cg)
+{
+ struct power_supply_config psy_cfg = { .drv_data = cg, };
+
+ cg->usb_psy = devm_power_supply_register(cg->dev, &rk818_usb_desc,
+ &psy_cfg);
+ if (IS_ERR(cg->usb_psy)) {
+ dev_err(cg->dev, "register usb power supply fail\n");
+ return PTR_ERR(cg->usb_psy);
+ }
+
+ cg->ac_psy = devm_power_supply_register(cg->dev, &rk818_ac_desc,
+ &psy_cfg);
+ if (IS_ERR(cg->ac_psy)) {
+ dev_err(cg->dev, "register ac power supply fail\n");
+ return PTR_ERR(cg->ac_psy);
+ }
+
+ return 0;
+}
+
+static void rk818_cg_pr_info(struct rk818_charger *cg)
+{
+ u8 usb_ctrl, chrg_ctrl1;
+
+ usb_ctrl = rk818_reg_read(cg, RK818_USB_CTRL_REG);
+ chrg_ctrl1 = rk818_reg_read(cg, RK818_CHRG_CTRL_REG1);
+ CG_INFO("ac=%d usb=%d dc=%d otg=%d v=%d chrg=%d input=%d virt=%d\n",
+ cg->ac_in, cg->usb_in, cg->dc_in, cg->otg_in,
+ chrg_vol_sel_array[(chrg_ctrl1 & 0x70) >> 4],
+ chrg_cur_sel_array[chrg_ctrl1 & 0x0f] * cg->res_div,
+ chrg_cur_input_array[usb_ctrl & 0x0f],
+ cg->pdata->virtual_power);
+}
+
+static bool is_battery_exist(struct rk818_charger *cg)
+{
+ return (rk818_reg_read(cg, RK818_SUP_STS_REG) & BAT_EXS) ? true : false;
+}
+
+static void rk818_cg_set_input_current(struct rk818_charger *cg,
+ int input_current)
+{
+ u8 usb_ctrl;
+
+ if (cg->pdata->virtual_power) {
+ CG_INFO("warning: virtual power mode...\n");
+ input_current = cg->chrg_input;
+ }
+
+ usb_ctrl = rk818_reg_read(cg, RK818_USB_CTRL_REG);
+ usb_ctrl &= ~INPUT_CUR_MSK;
+ usb_ctrl |= (input_current);
+ rk818_reg_write(cg, RK818_USB_CTRL_REG, usb_ctrl);
+}
+
+static void rk818_cg_set_finish_sig(struct rk818_charger *cg, int mode)
+{
+ u8 buf;
+
+ buf = rk818_reg_read(cg, RK818_CHRG_CTRL_REG3);
+ buf &= ~CHRG_FINISH_MODE_MSK;
+ buf |= mode;
+ rk818_reg_write(cg, RK818_CHRG_CTRL_REG3, buf);
+}
+
+static void rk818_cg_finish_sig_work(struct work_struct *work)
+{
+ struct rk818_charger *cg;
+
+ cg = container_of(work, struct rk818_charger, finish_sig_work.work);
+ if (rk818_cg_online(cg))
+ rk818_cg_set_finish_sig(cg, CHRG_FINISH_DIG_SIGNAL);
+ else
+ rk818_cg_set_finish_sig(cg, CHRG_FINISH_ANA_SIGNAL);
+}
+
+static void rk818_cg_set_chrg_param(struct rk818_charger *cg,
+ enum charger_t charger)
+{
+ u8 buf;
+
+ switch (charger) {
+ case USB_TYPE_NONE_CHARGER:
+ cg->usb_in = 0;
+ cg->ac_in = 0;
+ if (cg->dc_in == 0) {
+ cg->prop_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ rk818_cg_set_input_current(cg, INPUT_CUR450MA);
+ }
+ power_supply_changed(cg->usb_psy);
+ power_supply_changed(cg->ac_psy);
+ break;
+ case USB_TYPE_USB_CHARGER:
+ cg->usb_in = 1;
+ cg->ac_in = 0;
+ cg->prop_status = POWER_SUPPLY_STATUS_CHARGING;
+ if (cg->dc_in == 0)
+ rk818_cg_set_input_current(cg, INPUT_CUR450MA);
+ power_supply_changed(cg->usb_psy);
+ power_supply_changed(cg->ac_psy);
+ break;
+ case USB_TYPE_AC_CHARGER:
+ case USB_TYPE_CDP_CHARGER:
+ cg->ac_in = 1;
+ cg->usb_in = 0;
+ cg->prop_status = POWER_SUPPLY_STATUS_CHARGING;
+ if (charger == USB_TYPE_AC_CHARGER)
+ rk818_cg_set_input_current(cg, cg->chrg_input);
+ else
+ rk818_cg_set_input_current(cg, INPUT_CUR1500MA);
+ power_supply_changed(cg->usb_psy);
+ power_supply_changed(cg->ac_psy);
+ break;
+ case DC_TYPE_DC_CHARGER:
+ cg->dc_in = 1;
+ cg->prop_status = POWER_SUPPLY_STATUS_CHARGING;
+ rk818_cg_set_input_current(cg, cg->chrg_input);
+ power_supply_changed(cg->usb_psy);
+ power_supply_changed(cg->ac_psy);
+ break;
+ case DC_TYPE_NONE_CHARGER:
+ cg->dc_in = 0;
+ buf = rk818_reg_read(cg, RK818_VB_MON_REG);
+ if ((buf & PLUG_IN_STS) == 0) {
+ cg->ac_in = 0;
+ cg->usb_in = 0;
+ cg->prop_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ rk818_cg_set_input_current(cg, INPUT_CUR450MA);
+ } else if (cg->usb_in) {
+ rk818_cg_set_input_current(cg, INPUT_CUR450MA);
+ cg->prop_status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ power_supply_changed(cg->usb_psy);
+ power_supply_changed(cg->ac_psy);
+ break;
+ default:
+ cg->prop_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ }
+
+ if (rk818_cg_online(cg) && rk818_cg_get_dsoc(cg) == 100)
+ cg->prop_status = POWER_SUPPLY_STATUS_FULL;
+
+ if (cg->finish_sig_wq)
+ queue_delayed_work(cg->finish_sig_wq, &cg->finish_sig_work,
+ msecs_to_jiffies(1000));
+}
+
+static void rk818_cg_set_otg_state(struct rk818_charger *cg, int state)
+{
+ switch (state) {
+ case USB_OTG_POWER_ON:
+ rk818_reg_set_bits(cg, RK818_INT_STS_MSK_REG2,
+ PLUG_IN_MSK, PLUG_IN_MSK);
+ rk818_reg_set_bits(cg, RK818_INT_STS_MSK_REG2,
+ PLUG_OUT_MSK, PLUG_OUT_MSK);
+ rk818_reg_set_bits(cg, RK818_DCDC_EN_REG,
+ OTG_EN_MASK, OTG_EN_MASK);
+ break;
+ case USB_OTG_POWER_OFF:
+ rk818_reg_clear_bits(cg, RK818_INT_STS_MSK_REG2, PLUG_IN_MSK);
+ rk818_reg_clear_bits(cg, RK818_INT_STS_MSK_REG2, PLUG_OUT_MSK);
+ rk818_reg_clear_bits(cg, RK818_DCDC_EN_REG, OTG_EN_MASK);
+ break;
+ default:
+ dev_err(cg->dev, "error otg type\n");
+ break;
+ }
+}
+
+static enum charger_t rk818_cg_get_dc_state(struct rk818_charger *cg)
+{
+ int level;
+
+ if (!gpio_is_valid(cg->pdata->dc_det_pin))
+ return DC_TYPE_NONE_CHARGER;
+
+ level = gpio_get_value(cg->pdata->dc_det_pin);
+
+ return (level == cg->pdata->dc_det_level) ?
+ DC_TYPE_DC_CHARGER : DC_TYPE_NONE_CHARGER;
+}
+
+static void rk818_cg_dc_det_worker(struct work_struct *work)
+{
+ enum charger_t charger;
+ struct rk818_charger *cg = container_of(work,
+ struct rk818_charger, dc_work.work);
+
+ charger = rk818_cg_get_dc_state(cg);
+ if (charger == DC_TYPE_DC_CHARGER) {
+ CG_INFO("detect dc charger in..\n");
+ rk818_cg_set_chrg_param(cg, DC_TYPE_DC_CHARGER);
+ /* check otg supply */
+ if (cg->otg_in && cg->pdata->power_dc2otg) {
+ CG_INFO("otg power from dc adapter\n");
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_OFF);
+ }
+ } else {
+ CG_INFO("detect dc charger out..\n");
+ rk818_cg_set_chrg_param(cg, DC_TYPE_NONE_CHARGER);
+ /* check otg supply, power on anyway */
+ if (cg->otg_in) {
+ CG_INFO("disable charge, enable otg\n");
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_ON);
+ }
+ }
+
+ rk_send_wakeup_key();
+ rk818_cg_pr_info(cg);
+}
+
+static u8 rk818_cg_decode_chrg_vol(struct rk818_charger *cg)
+{
+ u8 val, index;
+ u32 chrg_vol;
+
+ chrg_vol = cg->pdata->max_chrg_voltage;
+ for (index = 0; index < ARRAY_SIZE(chrg_vol_sel_array); index++) {
+ if (chrg_vol < chrg_vol_sel_array[index])
+ break;
+ val = index << 4;
+ }
+
+ DBG("<%s>. vol=0x%x\n", __func__, val);
+ return val;
+}
+
+static u8 rk818_cg_decode_input_current(struct rk818_charger *cg)
+{
+ u8 val, index;
+ u32 input_current;
+
+ input_current = cg->pdata->max_input_current;
+ for (index = 0; index < ARRAY_SIZE(chrg_cur_input_array); index++) {
+ if (input_current < chrg_cur_input_array[index])
+ break;
+ val = index << 0;
+ }
+
+ DBG("<%s>. input=0x%x\n", __func__, val);
+ return val;
+}
+
+static u8 rk818_cg_decode_chrg_current(struct rk818_charger *cg)
+{
+ u8 val, index;
+ u32 chrg_current;
+
+ chrg_current = cg->pdata->max_chrg_current;
+ if (cg->pdata->sample_res == SAMPLE_RES_10MR) {
+ if (chrg_current > 2000)
+ chrg_current /= cg->res_div;
+ else
+ chrg_current = 1000;
+ }
+
+ for (index = 0; index < ARRAY_SIZE(chrg_cur_sel_array); index++) {
+ if (chrg_current < chrg_cur_sel_array[index])
+ break;
+ val = index << 0;
+ }
+
+ DBG("<%s>. sel=0x%x\n", __func__, val);
+ return val;
+}
+
+static void rk818_cg_init_config(struct rk818_charger *cg)
+{
+ u8 usb_ctrl, sup_sts, chrg_ctrl1;
+
+ cg->chrg_voltage = rk818_cg_decode_chrg_vol(cg);
+ cg->chrg_current = rk818_cg_decode_chrg_current(cg);
+ cg->chrg_input = rk818_cg_decode_input_current(cg);
+
+ sup_sts = rk818_reg_read(cg, RK818_SUP_STS_REG);
+ usb_ctrl = rk818_reg_read(cg, RK818_USB_CTRL_REG);
+
+ /* set charge current and voltage */
+ usb_ctrl &= ~INPUT_CUR_MSK;
+ usb_ctrl |= cg->chrg_input;
+ chrg_ctrl1 = (CHRG_EN | cg->chrg_voltage | cg->chrg_current);
+
+ /* disable voltage limit and enable input current limit */
+ sup_sts &= ~USB_VLIMIT_EN;
+ sup_sts |= USB_CLIMIT_EN;
+
+ rk818_reg_write(cg, RK818_SUP_STS_REG, sup_sts);
+ rk818_reg_write(cg, RK818_USB_CTRL_REG, usb_ctrl);
+ rk818_reg_write(cg, RK818_CHRG_CTRL_REG1, chrg_ctrl1);
+}
+
+static int rk818_cg_charger_evt_notifier(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct rk818_charger *cg =
+ container_of(nb, struct rk818_charger, cable_cg_nb);
+
+ queue_delayed_work(cg->usb_charger_wq, &cg->usb_work,
+ msecs_to_jiffies(10));
+
+ return NOTIFY_DONE;
+}
+
+static int rk818_cg_discnt_evt_notfier(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct rk818_charger *cg =
+ container_of(nb, struct rk818_charger, cable_discnt_nb);
+
+ queue_delayed_work(cg->usb_charger_wq, &cg->discnt_work,
+ msecs_to_jiffies(10));
+
+ return NOTIFY_DONE;
+}
+
+static int rk818_cg_host_evt_notifier(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct rk818_charger *cg =
+ container_of(nb, struct rk818_charger, cable_host_nb);
+
+ queue_delayed_work(cg->usb_charger_wq, &cg->host_work,
+ msecs_to_jiffies(10));
+
+ return NOTIFY_DONE;
+}
+
+static int rk818_cg_bc_evt_notifier(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct rk818_charger *cg =
+ container_of(nb, struct rk818_charger, bc_nb);
+
+ cg->bc_event = event;
+ queue_delayed_work(cg->usb_charger_wq, &cg->usb_work,
+ msecs_to_jiffies(10));
+
+ return NOTIFY_DONE;
+}
+
+static void rk818_cg_bc_evt_worker(struct work_struct *work)
+{
+ struct rk818_charger *cg = container_of(work,
+ struct rk818_charger, usb_work.work);
+ const char *event_name[] = {"DISCNT", "USB", "AC", "CDP1.5A",
+ "UNKNOWN", "OTG ON", "OTG OFF"};
+
+ switch (cg->bc_event) {
+ case USB_BC_TYPE_DISCNT:
+ rk818_cg_set_chrg_param(cg, USB_TYPE_NONE_CHARGER);
+ break;
+ case USB_BC_TYPE_SDP:
+ rk818_cg_set_chrg_param(cg, USB_TYPE_USB_CHARGER);
+ break;
+ case USB_BC_TYPE_DCP:
+ rk818_cg_set_chrg_param(cg, USB_TYPE_AC_CHARGER);
+ break;
+ case USB_BC_TYPE_CDP:
+ rk818_cg_set_chrg_param(cg, USB_TYPE_CDP_CHARGER);
+ break;
+ case USB_OTG_POWER_ON:
+ cg->otg_in = 1;
+ if (cg->pdata->power_dc2otg && cg->dc_in) {
+ CG_INFO("otg power from dc adapter\n");
+ } else {
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_ON);
+ CG_INFO("disable charge, enable otg\n");
+ }
+ break;
+ case USB_OTG_POWER_OFF:
+ cg->otg_in = 0;
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_OFF);
+ CG_INFO("enable charge, disable otg\n");
+ break;
+ default:
+ break;
+ }
+
+ CG_INFO("receive bc notifier event: %s..\n", event_name[cg->bc_event]);
+
+ rk818_cg_pr_info(cg);
+}
+
+static void rk818_cg_irq_delay_work(struct work_struct *work)
+{
+ struct rk818_charger *cg = container_of(work,
+ struct rk818_charger, irq_work.work);
+
+ if (cg->plug_in_irq) {
+ CG_INFO("pmic: plug in\n");
+ cg->plug_in_irq = 0;
+ rk_send_wakeup_key();
+ } else if (cg->plug_out_irq) {
+ CG_INFO("pmic: plug out\n");
+ cg->plug_out_irq = 0;
+ rk818_cg_set_chrg_param(cg, USB_TYPE_NONE_CHARGER);
+ rk818_cg_set_chrg_param(cg, DC_TYPE_NONE_CHARGER);
+ rk_send_wakeup_key();
+ rk818_cg_pr_info(cg);
+ } else {
+ CG_INFO("pmic: unknown irq\n");
+ }
+}
+
+static irqreturn_t rk818_plug_in_isr(int irq, void *cg)
+{
+ struct rk818_charger *icg;
+
+ icg = (struct rk818_charger *)cg;
+ icg->plug_in_irq = 1;
+ queue_delayed_work(icg->usb_charger_wq, &icg->irq_work,
+ msecs_to_jiffies(10));
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rk818_plug_out_isr(int irq, void *cg)
+{
+ struct rk818_charger *icg;
+
+ icg = (struct rk818_charger *)cg;
+ icg->plug_out_irq = 1;
+ queue_delayed_work(icg->usb_charger_wq, &icg->irq_work,
+ msecs_to_jiffies(10));
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rk818_dc_det_isr(int irq, void *charger)
+{
+ struct rk818_charger *cg = (struct rk818_charger *)charger;
+
+ if (gpio_get_value(cg->pdata->dc_det_pin))
+ irq_set_irq_type(irq, IRQF_TRIGGER_LOW);
+ else
+ irq_set_irq_type(irq, IRQF_TRIGGER_HIGH);
+
+ queue_delayed_work(cg->dc_charger_wq, &cg->dc_work,
+ msecs_to_jiffies(10));
+
+ return IRQ_HANDLED;
+}
+
+static int rk818_cg_init_irqs(struct rk818_charger *cg)
+{
+ struct rk808 *rk818 = cg->rk818;
+ struct platform_device *pdev = cg->pdev;
+ int ret, plug_in_irq, plug_out_irq;
+
+ plug_in_irq = regmap_irq_get_virq(rk818->irq_data, RK818_IRQ_PLUG_IN);
+ if (plug_in_irq < 0) {
+ dev_err(cg->dev, "plug_in_irq request failed!\n");
+ return plug_in_irq;
+ }
+
+ plug_out_irq = regmap_irq_get_virq(rk818->irq_data, RK818_IRQ_PLUG_OUT);
+ if (plug_out_irq < 0) {
+ dev_err(cg->dev, "plug_out_irq request failed!\n");
+ return plug_out_irq;
+ }
+
+ ret = devm_request_threaded_irq(cg->dev, plug_in_irq, NULL,
+ rk818_plug_in_isr,
+ IRQF_TRIGGER_RISING,
+ "rk818_plug_in", cg);
+ if (ret) {
+ dev_err(&pdev->dev, "plug_in_irq request failed!\n");
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(cg->dev, plug_out_irq, NULL,
+ rk818_plug_out_isr,
+ IRQF_TRIGGER_FALLING,
+ "rk818_plug_out", cg);
+ if (ret) {
+ dev_err(&pdev->dev, "plug_out_irq request failed!\n");
+ return ret;
+ }
+
+ INIT_DELAYED_WORK(&cg->irq_work, rk818_cg_irq_delay_work);
+
+ return 0;
+}
+
+static int rk818_cg_init_dc(struct rk818_charger *cg)
+{
+ int ret, level;
+ unsigned long irq_flags;
+ unsigned int dc_det_irq;
+
+ cg->dc_charger_wq = alloc_ordered_workqueue("%s",
+ WQ_MEM_RECLAIM | WQ_FREEZABLE,
+ "rk818-dc-wq");
+ INIT_DELAYED_WORK(&cg->dc_work, rk818_cg_dc_det_worker);
+ cg->dc_charger = DC_TYPE_NONE_CHARGER;
+
+ if (!cg->pdata->support_dc_det)
+ return 0;
+
+ ret = devm_gpio_request(cg->dev, cg->pdata->dc_det_pin, "rk818_dc_det");
+ if (ret < 0) {
+ dev_err(cg->dev, "failed to request gpio %d\n",
+ cg->pdata->dc_det_pin);
+ return ret;
+ }
+
+ ret = gpio_direction_input(cg->pdata->dc_det_pin);
+ if (ret) {
+ dev_err(cg->dev, "failed to set gpio input\n");
+ return ret;
+ }
+
+ level = gpio_get_value(cg->pdata->dc_det_pin);
+ if (level == cg->pdata->dc_det_level)
+ cg->dc_charger = DC_TYPE_DC_CHARGER;
+ else
+ cg->dc_charger = DC_TYPE_NONE_CHARGER;
+
+ if (level)
+ irq_flags = IRQF_TRIGGER_LOW;
+ else
+ irq_flags = IRQF_TRIGGER_HIGH;
+
+ dc_det_irq = gpio_to_irq(cg->pdata->dc_det_pin);
+ ret = devm_request_irq(cg->dev, dc_det_irq, rk818_dc_det_isr,
+ irq_flags, "rk818_dc_det", cg);
+ if (ret != 0) {
+ dev_err(cg->dev, "rk818_dc_det_irq request failed!\n");
+ return ret;
+ }
+
+ enable_irq_wake(dc_det_irq);
+
+ return 0;
+}
+
+static void rk818_cg_discnt_evt_worker(struct work_struct *work)
+{
+ struct rk818_charger *cg = container_of(work,
+ struct rk818_charger, discnt_work.work);
+
+ if (extcon_get_cable_state_(cg->cable_edev, EXTCON_USB) == 0) {
+ CG_INFO("receive type-c notifier event: DISCNT...\n");
+ rk818_cg_set_chrg_param(cg, USB_TYPE_NONE_CHARGER);
+ rk818_cg_pr_info(cg);
+ }
+}
+
+static void rk818_cg_host_evt_worker(struct work_struct *work)
+{
+ struct rk818_charger *cg = container_of(work,
+ struct rk818_charger, host_work.work);
+ struct extcon_dev *edev = cg->cable_edev;
+
+ /* Determine cable/charger type */
+ if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) > 0) {
+ CG_INFO("receive type-c notifier event: OTG ON...\n");
+ cg->otg_in = 1;
+ if (cg->dc_in && cg->pdata->power_dc2otg) {
+ CG_INFO("otg power from dc adapter\n");
+ } else {
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_ON);
+ CG_INFO("disable charge, enable otg\n");
+ }
+ } else if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) == 0) {
+ CG_INFO("receive type-c notifier event: OTG OFF...\n");
+ cg->otg_in = 0;
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_OFF);
+ CG_INFO("enble charge, disable otg\n");
+ }
+
+ rk818_cg_pr_info(cg);
+}
+
+static void rk818_cg_charger_evt_worker(struct work_struct *work)
+{
+ struct rk818_charger *cg = container_of(work,
+ struct rk818_charger, usb_work.work);
+ struct extcon_dev *edev = cg->cable_edev;
+ enum charger_t charger = USB_TYPE_UNKNOWN_CHARGER;
+ const char *event[] = {"UN", "NONE", "USB", "AC", "CDP1.5A"};
+
+ /* Determine cable/charger type */
+ if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_SDP) > 0)
+ charger = USB_TYPE_USB_CHARGER;
+ else if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_DCP) > 0)
+ charger = USB_TYPE_AC_CHARGER;
+ else if (extcon_get_cable_state_(edev, EXTCON_CHG_USB_CDP) > 0)
+ charger = USB_TYPE_CDP_CHARGER;
+
+ if (charger != USB_TYPE_UNKNOWN_CHARGER) {
+ CG_INFO("receive type-c notifier event: %s...\n",
+ event[charger]);
+ rk818_cg_set_chrg_param(cg, charger);
+ rk818_cg_pr_info(cg);
+ }
+}
+
+static long rk818_cg_init_usb(struct rk818_charger *cg)
+{
+ enum charger_t charger;
+ enum bc_port_type bc_type;
+ struct extcon_dev *edev;
+ struct device *dev = cg->dev;
+ int ret;
+
+ cg->usb_charger_wq = alloc_ordered_workqueue("%s",
+ WQ_MEM_RECLAIM | WQ_FREEZABLE,
+ "rk818-usb-wq");
+ cg->usb_charger = USB_TYPE_NONE_CHARGER;
+
+ /* type-C */
+ if (cg->pdata->extcon) {
+ edev = extcon_get_edev_by_phandle(dev->parent, 0);
+ if (IS_ERR(edev)) {
+ if (PTR_ERR(edev) != -EPROBE_DEFER)
+ dev_err(dev, "Invalid or missing extcon\n");
+ return PTR_ERR(edev);
+ }
+
+ /* Register chargers */
+ INIT_DELAYED_WORK(&cg->usb_work, rk818_cg_charger_evt_worker);
+ cg->cable_cg_nb.notifier_call = rk818_cg_charger_evt_notifier;
+ ret = extcon_register_notifier(edev, EXTCON_CHG_USB_SDP,
+ &cg->cable_cg_nb);
+ if (ret < 0) {
+ dev_err(dev, "failed to register notifier for SDP\n");
+ return ret;
+ }
+
+ ret = extcon_register_notifier(edev, EXTCON_CHG_USB_DCP,
+ &cg->cable_cg_nb);
+ if (ret < 0) {
+ dev_err(dev, "failed to register notifier for DCP\n");
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_SDP,
+ &cg->cable_cg_nb);
+ return ret;
+ }
+
+ ret = extcon_register_notifier(edev, EXTCON_CHG_USB_CDP,
+ &cg->cable_cg_nb);
+ if (ret < 0) {
+ dev_err(dev, "failed to register notifier for CDP\n");
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_SDP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_DCP,
+ &cg->cable_cg_nb);
+ return ret;
+ }
+
+ /* Register host */
+ INIT_DELAYED_WORK(&cg->host_work, rk818_cg_host_evt_worker);
+ cg->cable_host_nb.notifier_call = rk818_cg_host_evt_notifier;
+ ret = extcon_register_notifier(edev, EXTCON_USB_HOST,
+ &cg->cable_host_nb);
+ if (ret < 0) {
+ dev_err(dev, "failed to register notifier for HOST\n");
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_SDP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_DCP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_CDP,
+ &cg->cable_cg_nb);
+
+ return ret;
+ }
+
+ /* Register discnt usb */
+ INIT_DELAYED_WORK(&cg->discnt_work, rk818_cg_discnt_evt_worker);
+ cg->cable_discnt_nb.notifier_call = rk818_cg_discnt_evt_notfier;
+ ret = extcon_register_notifier(edev, EXTCON_USB,
+ &cg->cable_discnt_nb);
+ if (ret < 0) {
+ dev_err(dev, "failed to register notifier for HOST\n");
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_SDP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_DCP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(edev, EXTCON_CHG_USB_CDP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(edev, EXTCON_USB_HOST,
+ &cg->cable_host_nb);
+ return ret;
+ }
+
+ cg->cable_edev = edev;
+
+ CG_INFO("register typec extcon evt notifier\n");
+ } else {
+ INIT_DELAYED_WORK(&cg->usb_work, rk818_cg_bc_evt_worker);
+ cg->bc_nb.notifier_call = rk818_cg_bc_evt_notifier;
+ ret = rk_bc_detect_notifier_register(&cg->bc_nb, &bc_type);
+ if (ret) {
+ dev_err(dev, "failed to register notifier for bc\n");
+ return -EINVAL;
+ }
+
+ switch (bc_type) {
+ case USB_BC_TYPE_DISCNT:
+ charger = USB_TYPE_NONE_CHARGER;
+ break;
+ case USB_BC_TYPE_SDP:
+ case USB_BC_TYPE_CDP:
+ charger = USB_TYPE_USB_CHARGER;
+ break;
+ case USB_BC_TYPE_DCP:
+ charger = USB_TYPE_AC_CHARGER;
+ break;
+ default:
+ charger = USB_TYPE_NONE_CHARGER;
+ break;
+ }
+
+ cg->usb_charger = charger;
+ CG_INFO("register bc evt notifier\n");
+ }
+
+ return 0;
+}
+
+static void rk818_cg_init_finish_sig(struct rk818_charger *cg)
+{
+ if (rk818_cg_online(cg))
+ rk818_cg_set_finish_sig(cg, CHRG_FINISH_DIG_SIGNAL);
+ else
+ rk818_cg_set_finish_sig(cg, CHRG_FINISH_ANA_SIGNAL);
+
+ cg->finish_sig_wq = alloc_ordered_workqueue("%s",
+ WQ_MEM_RECLAIM | WQ_FREEZABLE,
+ "rk818-finish-sig-wq");
+ INIT_DELAYED_WORK(&cg->finish_sig_work, rk818_cg_finish_sig_work);
+}
+
+static void rk818_cg_init_charger_state(struct rk818_charger *cg)
+{
+ rk818_cg_init_config(cg);
+ rk818_cg_init_finish_sig(cg);
+ rk818_cg_set_chrg_param(cg, cg->dc_charger);
+ rk818_cg_set_chrg_param(cg, cg->usb_charger);
+ CG_INFO("ac=%d, usb=%d, dc=%d, otg=%d\n",
+ cg->ac_in, cg->usb_in, cg->dc_in, cg->otg_in);
+}
+
+#ifdef CONFIG_OF
+static int rk818_cg_parse_dt(struct rk818_charger *cg)
+{
+ struct device_node *np;
+ struct charger_platform_data *pdata;
+ enum of_gpio_flags flags;
+ struct device *dev = cg->dev;
+ int ret;
+
+ np = of_find_node_by_name(cg->pdev->dev.of_node, "battery");
+ if (!np) {
+ dev_err(dev, "battery node not found!\n");
+ return -ENODEV;
+ }
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ cg->pdata = pdata;
+ pdata->max_chrg_current = DEFAULT_CHRG_CURRENT;
+ pdata->max_input_current = DEFAULT_INPUT_CURRENT;
+ pdata->max_chrg_voltage = DEFAULT_CHRG_VOLTAGE;
+
+ pdata->extcon = device_property_read_bool(dev->parent, "extcon");
+
+ ret = of_property_read_u32(np, "max_chrg_current",
+ &pdata->max_chrg_current);
+ if (ret < 0)
+ dev_err(dev, "max_chrg_current missing!\n");
+
+ ret = of_property_read_u32(np, "max_input_current",
+ &pdata->max_input_current);
+ if (ret < 0)
+ dev_err(dev, "max_input_current missing!\n");
+
+ ret = of_property_read_u32(np, "max_chrg_voltage",
+ &pdata->max_chrg_voltage);
+ if (ret < 0)
+ dev_err(dev, "max_chrg_voltage missing!\n");
+
+ ret = of_property_read_u32(np, "virtual_power", &pdata->virtual_power);
+ if (ret < 0)
+ dev_err(dev, "virtual_power missing!\n");
+
+ ret = of_property_read_u32(np, "power_dc2otg", &pdata->power_dc2otg);
+ if (ret < 0)
+ dev_err(dev, "power_dc2otg missing!\n");
+
+ ret = of_property_read_u32(np, "sample_res", &pdata->sample_res);
+ if (ret < 0) {
+ pdata->sample_res = SAMPLE_RES_20MR;
+ dev_err(dev, "sample_res missing!\n");
+ }
+
+ if (!is_battery_exist(cg))
+ pdata->virtual_power = 1;
+
+ cg->res_div = (cg->pdata->sample_res == SAMPLE_RES_20MR) ?
+ SAMPLE_RES_DIV1 : SAMPLE_RES_DIV2;
+
+ if (!of_find_property(np, "dc_det_gpio", &ret)) {
+ pdata->support_dc_det = false;
+ CG_INFO("not support dc\n");
+ } else {
+ pdata->support_dc_det = true;
+ pdata->dc_det_pin = of_get_named_gpio_flags(np, "dc_det_gpio",
+ 0, &flags);
+ if (gpio_is_valid(pdata->dc_det_pin)) {
+ CG_INFO("support dc\n");
+ pdata->dc_det_level = (flags & OF_GPIO_ACTIVE_LOW) ?
+ 0 : 1;
+ } else {
+ dev_err(dev, "invalid dc det gpio!\n");
+ return -EINVAL;
+ }
+ }
+
+ DBG("input_current:%d\n"
+ "chrg_current:%d\n"
+ "chrg_voltage:%d\n"
+ "sample_res:%d\n"
+ "extcon:%d\n"
+ "virtual_power:%d\n"
+ "power_dc2otg:%d\n",
+ pdata->max_input_current, pdata->max_chrg_current,
+ pdata->max_chrg_voltage, pdata->sample_res, pdata->extcon,
+ pdata->virtual_power, pdata->power_dc2otg);
+
+ return 0;
+}
+#else
+static int rk818_cg_parse_dt(struct rk818_charger *cg)
+{
+ return -ENODEV;
+}
+#endif
+
+static int rk818_charger_probe(struct platform_device *pdev)
+{
+ struct rk808 *rk818 = dev_get_drvdata(pdev->dev.parent);
+ struct rk818_charger *cg;
+ int ret;
+
+ cg = devm_kzalloc(&pdev->dev, sizeof(*cg), GFP_KERNEL);
+ if (!cg)
+ return -ENOMEM;
+
+ cg->rk818 = rk818;
+ cg->pdev = pdev;
+ cg->dev = &pdev->dev;
+ cg->regmap = rk818->regmap;
+ platform_set_drvdata(pdev, cg);
+
+ ret = rk818_cg_parse_dt(cg);
+ if (ret < 0) {
+ dev_err(cg->dev, "parse dt failed!\n");
+ return ret;
+ }
+
+ ret = rk818_cg_init_irqs(cg);
+ if (ret != 0) {
+ dev_err(cg->dev, "init irqs failed!\n");
+ return ret;
+ }
+
+ ret = rk818_cg_init_dc(cg);
+ if (ret) {
+ dev_err(cg->dev, "init dc failed!\n");
+ return ret;
+ }
+
+ ret = rk818_cg_init_usb(cg);
+ if (ret) {
+ dev_err(cg->dev, "init usb failed!\n");
+ return ret;
+ }
+
+ ret = rk818_cg_init_power_supply(cg);
+ if (ret) {
+ dev_err(cg->dev, "init power supply fail!\n");
+ return ret;
+ }
+
+ rk818_cg_init_charger_state(cg);
+
+ CG_INFO("driver version: %s\n", DRIVER_VERSION);
+
+ return ret;
+}
+
+static int rk818_charger_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct rk818_charger *cg = platform_get_drvdata(pdev);
+
+ if (cg->otg_in && cg->dc_in) {
+ cg->int_msk_reg2 = rk818_reg_read(cg, RK818_INT_STS_MSK_REG2);
+ rk818_reg_set_bits(cg, RK818_INT_STS_MSK_REG2,
+ CHRG_CVTLMT_INT_MSK, CHRG_CVTLMT_INT_MSK);
+ }
+
+ return 0;
+}
+
+static int rk818_charger_resume(struct platform_device *pdev)
+{
+ struct rk818_charger *cg = platform_get_drvdata(pdev);
+
+ if (cg->otg_in && cg->dc_in)
+ rk818_reg_write(cg, RK818_INT_STS_MSK_REG2, cg->int_msk_reg2);
+
+ return 0;
+}
+
+static void rk818_charger_shutdown(struct platform_device *pdev)
+{
+ struct rk818_charger *cg = platform_get_drvdata(pdev);
+
+ cancel_delayed_work_sync(&cg->host_work);
+ cancel_delayed_work_sync(&cg->usb_work);
+ cancel_delayed_work_sync(&cg->discnt_work);
+ cancel_delayed_work_sync(&cg->dc_work);
+ cancel_delayed_work_sync(&cg->finish_sig_work);
+ cancel_delayed_work_sync(&cg->irq_work);
+ destroy_workqueue(cg->usb_charger_wq);
+ destroy_workqueue(cg->dc_charger_wq);
+ destroy_workqueue(cg->finish_sig_wq);
+
+ if (cg->pdata->extcon) {
+ extcon_unregister_notifier(cg->cable_edev, EXTCON_CHG_USB_SDP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(cg->cable_edev, EXTCON_CHG_USB_DCP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(cg->cable_edev, EXTCON_CHG_USB_CDP,
+ &cg->cable_cg_nb);
+ extcon_unregister_notifier(cg->cable_edev, EXTCON_USB_HOST,
+ &cg->cable_host_nb);
+ extcon_unregister_notifier(cg->cable_edev, EXTCON_USB,
+ &cg->cable_discnt_nb);
+ } else {
+ rk_bc_detect_notifier_unregister(&cg->bc_nb);
+ }
+
+ rk818_cg_set_otg_state(cg, USB_OTG_POWER_OFF);
+ rk818_cg_set_finish_sig(cg, CHRG_FINISH_ANA_SIGNAL);
+
+ CG_INFO("shutdown: ac=%d usb=%d dc=%d otg=%d\n",
+ cg->ac_in, cg->usb_in, cg->dc_in, cg->otg_in);
+}
+
+static struct platform_driver rk818_charger_driver = {
+ .probe = rk818_charger_probe,
+ .suspend = rk818_charger_suspend,
+ .resume = rk818_charger_resume,
+ .shutdown = rk818_charger_shutdown,
+ .driver = {
+ .name = "rk818-charger",
+ },
+};
+
+static int __init charger_init(void)
+{
+ return platform_driver_register(&rk818_charger_driver);
+}
+module_init(charger_init);
+
+static void __exit charger_exit(void)
+{
+ platform_driver_unregister(&rk818_charger_driver);
+}
+module_exit(charger_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:rk818-charger");
+MODULE_AUTHOR("chenjh<chenjh@rock-chips.com>");
projects / firefly-linux-kernel-4.4.55.git / commitdiff