1804 lines
43 KiB
C
1804 lines
43 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2021 MediaTek Inc.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#include <linux/of_gpio.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#ifdef CONFIG_RT_REGMAP
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#include <mt-plat/rt-regmap.h>
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#endif
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#include "mtk_charger_intf.h"
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#include "rt9465.h"
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#define I2C_ACCESS_MAX_RETRY 5
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#define RT9465_DRV_VERSION "1.0.11_MTK"
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/* ======================= */
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/* RT9465 Parameter */
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/* ======================= */
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enum rt9465_charging_status {
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RT9465_CHG_STATUS_READY = 0,
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RT9465_CHG_STATUS_PROGRESS,
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RT9465_CHG_STATUS_DONE,
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RT9465_CHG_STATUS_FAULT,
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RT9465_CHG_STATUS_MAX,
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};
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/* Charging status name */
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static const char *rt9465_chg_status_name[RT9465_CHG_STATUS_MAX] = {
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"ready", "progress", "done", "fault",
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};
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static const u8 rt9465_hidden_mode_val[] = {
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0x30, 0x26, 0xC7, 0xA4, 0x33, 0x06, 0x5F, 0xE1,
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};
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static const u32 rt9465_safety_timer[] = {
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4, 6, 8, 10, 12, 14, 16, 20,
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};
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enum rt9465_irq_idx {
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RT9465_IRQIDX_STATC = 0,
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RT9465_IRQIDX_FAULT,
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RT9465_IRQSTAT_MAX,
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RT9465_IRQIDX_IRQ1 = RT9465_IRQSTAT_MAX,
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RT9465_IRQIDX_IRQ2,
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RT9465_IRQIDX_MAX,
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};
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static u8 rt9465_irqmask[RT9465_IRQIDX_MAX] = {
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0x00, 0xE0, 0xFF, 0xFF
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};
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static const u8 rt9465_irq_maskall[RT9465_IRQIDX_MAX] = {
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0xE0, 0xE0, 0xFF, 0xFF
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};
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struct rt9465_desc {
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u32 ichg; /* uA */
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u32 mivr; /* uV */
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u32 cv; /* uV */
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u32 ieoc; /* uA */
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u32 safety_timer; /* hour */
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bool en_te;
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bool en_wdt;
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bool en_st;
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int regmap_represent_slave_addr;
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const char *regmap_name;
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const char *chg_dev_name;
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const char *alias_name;
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};
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/* These default values will be used if there's no property in dts */
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static struct rt9465_desc rt9465_default_desc = {
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.ichg = 2000000, /* uA */
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.mivr = 4400000, /* uV */
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.cv = 4350000, /* uV */
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.ieoc = 250000, /* uA */
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.safety_timer = 12, /* hour */
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.en_te = true,
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.en_wdt = true,
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.en_st = true,
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.regmap_represent_slave_addr = RT9465_SLAVE_ADDR,
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.regmap_name = "rt9465",
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.chg_dev_name = "secondary_chg",
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.alias_name = "rt9465",
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};
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struct rt9465_info {
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struct i2c_client *i2c;
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struct rt9465_desc *desc;
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struct charger_device *chg_dev;
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struct charger_properties chg_props;
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struct device *dev;
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struct mutex i2c_access_lock;
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struct mutex adc_access_lock;
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struct mutex gpio_access_lock;
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struct mutex irq_access_lock;
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struct mutex hidden_mode_lock;
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u32 intr_gpio;
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u32 en_gpio;
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int irq;
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u8 chip_rev;
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u32 hidden_mode_cnt;
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atomic_t is_chip_en;
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u8 irq_flag[RT9465_IRQIDX_MAX];
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u8 irq_stat[RT9465_IRQSTAT_MAX];
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#ifdef CONFIG_RT_REGMAP
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struct rt_regmap_device *regmap_dev;
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struct rt_regmap_properties *regmap_prop;
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#endif /* CONFIG_RT_REGMAP */
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};
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static int rt9465_kick_wdt(struct charger_device *chg_dev);
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static int rt9465_reserved_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_treg_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_mivr_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_pwr_rdy_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_vbatsuv_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_vbatov_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_vbusov_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_faulti_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_statci_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_temp_l_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_temp_h_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_tmri_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_adpbadi_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_otpi_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_wdtmri_handler(struct rt9465_info *info)
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{
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int ret = 0;
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chr_info("%s\n", __func__);
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ret = rt9465_kick_wdt(info->chg_dev);
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if (ret < 0)
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chr_err("%s: kick wdt fail\n", __func__);
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return ret;
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}
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static int rt9465_ssfinishi_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_termi_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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static int rt9465_chg_ieoci_handler(struct rt9465_info *info)
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{
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chr_info("%s\n", __func__);
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return 0;
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}
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struct irq_mapping_tbl {
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const char *name;
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int (*hdlr)(struct rt9465_info *info);
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};
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#define RT9465_IRQ_MAPPING(_name) \
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{.name = #_name, .hdlr = rt9465_ ## _name ## _handler}
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static const struct irq_mapping_tbl rt9465_irq_mapping_tbl[] = {
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(chg_treg),
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RT9465_IRQ_MAPPING(chg_mivr),
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RT9465_IRQ_MAPPING(pwr_rdy),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(chg_vbatsuv),
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RT9465_IRQ_MAPPING(chg_vbatov),
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RT9465_IRQ_MAPPING(chg_vbusov),
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RT9465_IRQ_MAPPING(chg_faulti),
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RT9465_IRQ_MAPPING(chg_statci),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(temp_l),
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RT9465_IRQ_MAPPING(temp_h),
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RT9465_IRQ_MAPPING(chg_tmri),
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RT9465_IRQ_MAPPING(chg_adpbadi),
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RT9465_IRQ_MAPPING(chg_otpi),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(reserved),
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RT9465_IRQ_MAPPING(wdtmri),
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RT9465_IRQ_MAPPING(ssfinishi),
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RT9465_IRQ_MAPPING(chg_termi),
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RT9465_IRQ_MAPPING(chg_ieoci),
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};
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/* ======================= */
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/* Address & Default value */
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/* ======================= */
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static const unsigned char rt9465_reg_addr[] = {
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RT9465_REG_CHG_CTRL0,
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RT9465_REG_CHG_CTRL1,
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RT9465_REG_CHG_CTRL2,
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RT9465_REG_CHG_CTRL3,
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RT9465_REG_CHG_CTRL4,
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RT9465_REG_CHG_CTRL5,
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RT9465_REG_CHG_CTRL6,
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RT9465_REG_CHG_CTRL7,
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RT9465_REG_CHG_CTRL8,
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RT9465_REG_CHG_CTRL9,
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RT9465_REG_CHG_CTRL10,
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RT9465_REG_CHG_CTRL12,
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RT9465_REG_CHG_CTRL13,
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RT9465_REG_HIDDEN_CTRL2,
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RT9465_REG_HIDDEN_CTRL6,
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RT9465_REG_SYSTEM1,
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RT9465_REG_CHG_STATC,
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RT9465_REG_CHG_FAULT,
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RT9465_REG_CHG_IRQ1,
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RT9465_REG_CHG_IRQ2,
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RT9465_REG_CHG_STATC_MASK,
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RT9465_REG_CHG_FAULT_MASK,
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RT9465_REG_CHG_IRQ1_MASK,
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RT9465_REG_CHG_IRQ2_MASK,
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};
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/* ========= */
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/* RT Regmap */
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/* ========= */
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#ifdef CONFIG_RT_REGMAP
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RT_REG_DECL(RT9465_REG_CHG_CTRL0, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL1, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL2, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL3, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL4, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL5, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL6, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL7, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL8, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL9, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL10, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL12, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_CTRL13, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_HIDDEN_CTRL2, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_HIDDEN_CTRL6, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_SYSTEM1, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_STATC, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_FAULT, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_IRQ1, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_IRQ2, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_STATC_MASK, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_FAULT_MASK, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_IRQ1_MASK, 1, RT_VOLATILE, {});
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RT_REG_DECL(RT9465_REG_CHG_IRQ2_MASK, 1, RT_VOLATILE, {});
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static const rt_register_map_t rt9465_regmap_map[] = {
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RT_REG(RT9465_REG_CHG_CTRL0),
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RT_REG(RT9465_REG_CHG_CTRL1),
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RT_REG(RT9465_REG_CHG_CTRL2),
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RT_REG(RT9465_REG_CHG_CTRL3),
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RT_REG(RT9465_REG_CHG_CTRL4),
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RT_REG(RT9465_REG_CHG_CTRL5),
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RT_REG(RT9465_REG_CHG_CTRL6),
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RT_REG(RT9465_REG_CHG_CTRL7),
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RT_REG(RT9465_REG_CHG_CTRL8),
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RT_REG(RT9465_REG_CHG_CTRL9),
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RT_REG(RT9465_REG_CHG_CTRL10),
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RT_REG(RT9465_REG_CHG_CTRL12),
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RT_REG(RT9465_REG_CHG_CTRL13),
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RT_REG(RT9465_REG_HIDDEN_CTRL2),
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RT_REG(RT9465_REG_HIDDEN_CTRL6),
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RT_REG(RT9465_REG_SYSTEM1),
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RT_REG(RT9465_REG_CHG_STATC),
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RT_REG(RT9465_REG_CHG_FAULT),
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RT_REG(RT9465_REG_CHG_IRQ1),
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RT_REG(RT9465_REG_CHG_IRQ2),
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RT_REG(RT9465_REG_CHG_STATC_MASK),
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RT_REG(RT9465_REG_CHG_FAULT_MASK),
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RT_REG(RT9465_REG_CHG_IRQ1_MASK),
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RT_REG(RT9465_REG_CHG_IRQ2_MASK),
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};
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#endif /* CONFIG_RT_REGMAP */
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/* ========================= */
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/* I2C operations */
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/* ========================= */
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static inline bool __rt9465_is_chip_en(struct rt9465_info *info)
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{
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int en = 0;
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en = gpio_get_value(info->en_gpio);
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if ((en && !atomic_read(&info->is_chip_en)) ||
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(!en && atomic_read(&info->is_chip_en)))
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chr_err("%s: en not sync(%d, %d)\n", __func__, en,
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atomic_read(&info->is_chip_en));
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return en;
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}
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static int rt9465_device_read(void *client, u32 addr, int leng, void *dst)
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{
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struct i2c_client *i2c = (struct i2c_client *)client;
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return i2c_smbus_read_i2c_block_data(i2c, addr, leng, dst);
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}
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static int rt9465_device_write(void *client, u32 addr, int leng,
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const void *src)
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{
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struct i2c_client *i2c = (struct i2c_client *)client;
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return i2c_smbus_write_i2c_block_data(i2c, addr, leng, src);
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}
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#ifdef CONFIG_RT_REGMAP
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static struct rt_regmap_fops rt9465_regmap_fops = {
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.read_device = rt9465_device_read,
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.write_device = rt9465_device_write,
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};
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static int rt9465_register_rt_regmap(struct rt9465_info *info)
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{
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int ret = 0;
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struct i2c_client *i2c = info->i2c;
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struct rt_regmap_properties *prop = NULL;
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chr_info("%s\n", __func__);
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prop = devm_kzalloc(&i2c->dev, sizeof(struct rt_regmap_properties),
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GFP_KERNEL);
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if (!prop)
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return -ENOMEM;
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prop->name = info->desc->regmap_name;
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prop->aliases = info->desc->regmap_name;
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prop->register_num = ARRAY_SIZE(rt9465_regmap_map);
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prop->rm = rt9465_regmap_map;
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prop->rt_regmap_mode = RT_SINGLE_BYTE | RT_CACHE_DISABLE |
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RT_IO_PASS_THROUGH;
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prop->io_log_en = 0;
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info->regmap_prop = prop;
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info->regmap_dev = rt_regmap_device_register_ex(info->regmap_prop,
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&rt9465_regmap_fops, &i2c->dev, i2c,
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info->desc->regmap_represent_slave_addr, info);
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if (!info->regmap_dev) {
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chr_err("register regmap device failed\n");
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return -EIO;
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}
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return ret;
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}
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#endif /* CONFIG_RT_REGMAP */
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static inline int __rt9465_i2c_write_byte(struct rt9465_info *info, u8 cmd,
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u8 data)
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{
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int ret = 0, retry = 0;
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do {
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#ifdef CONFIG_RT_REGMAP
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ret = rt_regmap_block_write(info->regmap_dev, cmd, 1, &data);
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#else
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ret = rt9465_device_write(info->i2c, cmd, 1, &data);
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#endif
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retry++;
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if (ret < 0)
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udelay(10);
|
|
} while (ret < 0 && retry < I2C_ACCESS_MAX_RETRY);
|
|
|
|
if (ret < 0)
|
|
chr_err("%s: I2CW[0x%02X] = 0x%02X failed\n",
|
|
__func__, cmd, data);
|
|
else
|
|
dev_dbg_ratelimited(info->dev, "%s: I2CW[0x%02X] = 0x%02X\n",
|
|
__func__, cmd, data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_i2c_write_byte(struct rt9465_info *info, u8 cmd, u8 data)
|
|
{
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->i2c_access_lock);
|
|
mutex_lock(&info->gpio_access_lock);
|
|
if (__rt9465_is_chip_en(info))
|
|
ret = __rt9465_i2c_write_byte(info, cmd, data);
|
|
else
|
|
ret = -EINVAL;
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
mutex_unlock(&info->i2c_access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline int __rt9465_i2c_read_byte(struct rt9465_info *info, u8 cmd)
|
|
{
|
|
int ret = 0, ret_val = 0, retry = 0;
|
|
|
|
do {
|
|
#ifdef CONFIG_RT_REGMAP
|
|
ret = rt_regmap_block_read(info->regmap_dev, cmd, 1, &ret_val);
|
|
#else
|
|
ret = rt9465_device_read(info->i2c, cmd, 1, &ret_val);
|
|
#endif
|
|
retry++;
|
|
if (ret < 0)
|
|
udelay(10);
|
|
} while (ret < 0 && retry < I2C_ACCESS_MAX_RETRY);
|
|
|
|
if (ret < 0) {
|
|
chr_err("%s: I2CR[0x%02X] failed\n", __func__, cmd);
|
|
return ret;
|
|
}
|
|
|
|
ret_val = ret_val & 0xFF;
|
|
|
|
dev_dbg_ratelimited(info->dev, "%s: I2CR[0x%02X] = 0x%02X\n", __func__,
|
|
cmd, ret_val);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
static int rt9465_i2c_read_byte(struct rt9465_info *info, u8 cmd)
|
|
{
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->i2c_access_lock);
|
|
mutex_lock(&info->gpio_access_lock);
|
|
if (__rt9465_is_chip_en(info))
|
|
ret = __rt9465_i2c_read_byte(info, cmd);
|
|
else
|
|
ret = -EINVAL;
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
mutex_unlock(&info->i2c_access_lock);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return (ret & 0xFF);
|
|
}
|
|
|
|
static inline int __rt9465_i2c_block_write(struct rt9465_info *info, u8 cmd,
|
|
u32 leng, const u8 *data)
|
|
{
|
|
int ret = 0;
|
|
|
|
#ifdef CONFIG_RT_REGMAP
|
|
ret = rt_regmap_block_write(info->regmap_dev, cmd, leng, data);
|
|
#else
|
|
ret = rt9465_device_write(info->i2c, cmd, leng, data);
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_i2c_block_write(struct rt9465_info *info, u8 cmd, u32 leng,
|
|
const u8 *data)
|
|
{
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->i2c_access_lock);
|
|
mutex_lock(&info->gpio_access_lock);
|
|
if (__rt9465_is_chip_en(info))
|
|
ret = __rt9465_i2c_block_write(info, cmd, leng, data);
|
|
else
|
|
ret = -EINVAL;
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
mutex_unlock(&info->i2c_access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline int __rt9465_i2c_block_read(struct rt9465_info *info, u8 cmd,
|
|
u32 leng, u8 *data)
|
|
{
|
|
int ret = 0;
|
|
|
|
#ifdef CONFIG_RT_REGMAP
|
|
ret = rt_regmap_block_read(info->regmap_dev, cmd, leng, data);
|
|
#else
|
|
ret = rt9465_device_read(info->i2c, cmd, leng, data);
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_i2c_block_read(struct rt9465_info *info, u8 cmd, u32 leng,
|
|
u8 *data)
|
|
{
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->i2c_access_lock);
|
|
mutex_lock(&info->gpio_access_lock);
|
|
if (__rt9465_is_chip_en(info))
|
|
ret = __rt9465_i2c_block_read(info, cmd, leng, data);
|
|
else
|
|
ret = -EINVAL;
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
mutex_unlock(&info->i2c_access_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_i2c_test_bit(struct rt9465_info *info, u8 cmd, u8 shift,
|
|
bool *is_one)
|
|
{
|
|
int ret = 0;
|
|
u8 data = 0;
|
|
|
|
ret = rt9465_i2c_read_byte(info, cmd);
|
|
if (ret < 0) {
|
|
*is_one = false;
|
|
return ret;
|
|
}
|
|
|
|
data = ret & (1 << shift);
|
|
*is_one = (data == 0 ? false : true);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_i2c_update_bits(struct rt9465_info *info, u8 cmd, u8 data,
|
|
u8 mask)
|
|
{
|
|
int ret = 0;
|
|
u8 reg_data = 0;
|
|
|
|
mutex_lock(&info->i2c_access_lock);
|
|
mutex_lock(&info->gpio_access_lock);
|
|
if (__rt9465_is_chip_en(info)) {
|
|
ret = __rt9465_i2c_read_byte(info, cmd);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
reg_data = ret & 0xFF;
|
|
reg_data &= ~mask;
|
|
reg_data |= (data & mask);
|
|
|
|
ret = __rt9465_i2c_write_byte(info, cmd, reg_data);
|
|
} else
|
|
ret = -EINVAL;
|
|
|
|
out:
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
mutex_unlock(&info->i2c_access_lock);
|
|
return ret;
|
|
}
|
|
|
|
static inline int rt9465_set_bit(struct rt9465_info *info, u8 reg, u8 mask)
|
|
{
|
|
return rt9465_i2c_update_bits(info, reg, mask, mask);
|
|
}
|
|
|
|
static inline int rt9465_clr_bit(struct rt9465_info *info, u8 reg, u8 mask)
|
|
{
|
|
return rt9465_i2c_update_bits(info, reg, 0x00, mask);
|
|
}
|
|
|
|
/* ================== */
|
|
/* Internal Functions */
|
|
/* ================== */
|
|
|
|
/* The following APIs will be reference in internal functions */
|
|
static int rt9465_get_ichg(struct charger_device *chg_dev, u32 *uA);
|
|
static int rt9465_dump_register(struct charger_device *chg_dev);
|
|
|
|
static inline u8 rt9465_closest_reg(u32 min, u32 max, u32 step, u32 target)
|
|
{
|
|
/* Smaller than minimum supported value, use minimum one */
|
|
if (target < min)
|
|
return 0;
|
|
|
|
/* Greater than maximum supported value, use maximum one */
|
|
if (target >= max)
|
|
return (max - min) / step;
|
|
|
|
return (target - min) / step;
|
|
}
|
|
|
|
static inline u32 rt9465_closest_value(u32 min, u32 max, u32 step, u8 reg)
|
|
{
|
|
u32 ret_val = 0;
|
|
|
|
ret_val = min + reg * step;
|
|
|
|
return ret_val > max ? max : ret_val;
|
|
}
|
|
|
|
static inline u8 rt9465_closest_reg_via_tbl(const u32 *tbl, u32 tbl_size,
|
|
u32 target)
|
|
{
|
|
u32 i = 0;
|
|
|
|
/* Smaller than minimum supported value, use minimum one */
|
|
if (target < tbl[0])
|
|
return 0;
|
|
|
|
for (i = 0; i < tbl_size - 1; i++) {
|
|
if (target >= tbl[i] && target < tbl[i + 1])
|
|
return i;
|
|
}
|
|
|
|
/* Greater than maximum supported value, use maximum one */
|
|
return tbl_size - 1;
|
|
}
|
|
|
|
static inline void rt9465_irq_set_flag(struct rt9465_info *info, u8 *irq,
|
|
u8 mask)
|
|
{
|
|
mutex_lock(&info->irq_access_lock);
|
|
*irq |= mask;
|
|
mutex_unlock(&info->irq_access_lock);
|
|
}
|
|
|
|
static inline void rt9465_irq_clr_flag(struct rt9465_info *info, u8 *irq,
|
|
u8 mask)
|
|
{
|
|
mutex_lock(&info->irq_access_lock);
|
|
*irq &= ~mask;
|
|
mutex_unlock(&info->irq_access_lock);
|
|
}
|
|
|
|
static inline const char *rt9465_get_irq_name(struct rt9465_info *info,
|
|
int irqnum)
|
|
{
|
|
if (irqnum >= 0 && irqnum < ARRAY_SIZE(rt9465_irq_mapping_tbl))
|
|
return rt9465_irq_mapping_tbl[irqnum].name;
|
|
return "not found";
|
|
}
|
|
|
|
static inline void rt9465_irq_unmask(struct rt9465_info *info,
|
|
unsigned int irqnum)
|
|
{
|
|
dev_dbg(info->dev, "%s: irq = %d, %s\n", __func__, irqnum,
|
|
rt9465_get_irq_name(info, irqnum));
|
|
rt9465_irqmask[irqnum / 8] &= ~(1 << (irqnum % 8));
|
|
}
|
|
|
|
static int rt9465_enable_hidden_mode(struct rt9465_info *info, bool en)
|
|
{
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->hidden_mode_lock);
|
|
|
|
if (en) {
|
|
if (info->hidden_mode_cnt == 0) {
|
|
ret = rt9465_i2c_block_write(info, 0x50,
|
|
ARRAY_SIZE(rt9465_hidden_mode_val),
|
|
rt9465_hidden_mode_val);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
info->hidden_mode_cnt++;
|
|
} else {
|
|
if (info->hidden_mode_cnt == 1) /* last one */
|
|
ret = rt9465_i2c_write_byte(info, 0x50, 0x00);
|
|
info->hidden_mode_cnt--;
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
chr_info("%s: en = %d\n", __func__, en);
|
|
goto out;
|
|
|
|
err:
|
|
chr_err("%s: en = %d fail(%d)\n", __func__, en, ret);
|
|
out:
|
|
mutex_unlock(&info->hidden_mode_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_sw_workaround(struct rt9465_info *info)
|
|
{
|
|
int ret = 0;
|
|
|
|
chr_info("%s\n", __func__);
|
|
|
|
/* Enter hidden mode */
|
|
rt9465_enable_hidden_mode(info, true);
|
|
|
|
/* For chip rev == E2, set Hidden code to make ICHG accurate */
|
|
if (info->chip_rev == RT9465_VERSION_E2) {
|
|
ret = rt9465_i2c_write_byte(info, RT9465_REG_HIDDEN_CTRL2,
|
|
0x68);
|
|
if (ret < 0)
|
|
goto out;
|
|
ret = rt9465_i2c_write_byte(info, RT9465_REG_HIDDEN_CTRL6,
|
|
0x3A);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
rt9465_enable_hidden_mode(info, false);
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t rt9465_irq_handler(int irq, void *data)
|
|
{
|
|
int ret = 0, i = 0, j = 0;
|
|
u8 evt[RT9465_IRQIDX_MAX] = {0};
|
|
u8 mask[RT9465_IRQIDX_MAX] = {0};
|
|
u8 stat[RT9465_IRQSTAT_MAX] = {0};
|
|
struct rt9465_info *info = (struct rt9465_info *)data;
|
|
|
|
chr_info("%s\n", __func__);
|
|
|
|
/* read event */
|
|
ret = rt9465_i2c_block_read(info, RT9465_REG_CHG_STATC, ARRAY_SIZE(evt),
|
|
evt);
|
|
if (ret < 0) {
|
|
chr_err("%s: read evt fail\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
/* read mask */
|
|
ret = rt9465_i2c_block_read(info, RT9465_REG_CHG_STATC_MASK,
|
|
ARRAY_SIZE(mask), mask);
|
|
if (ret < 0) {
|
|
chr_err("%s: read mask fail\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
/* Store stat */
|
|
memcpy(stat, info->irq_stat, RT9465_IRQSTAT_MAX);
|
|
|
|
for (i = 0; i < RT9465_IRQIDX_MAX; i++) {
|
|
evt[i] &= ~mask[i];
|
|
if (i < RT9465_IRQSTAT_MAX) {
|
|
info->irq_stat[i] = evt[i];
|
|
evt[i] ^= stat[i];
|
|
}
|
|
for (j = 0; j < 8; j++) {
|
|
if (!(evt[i] & (1 << j)))
|
|
continue;
|
|
if (rt9465_irq_mapping_tbl[i * 8 + j].hdlr)
|
|
(rt9465_irq_mapping_tbl[i * 8 + j].hdlr)(info);
|
|
}
|
|
}
|
|
|
|
err:
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int rt9465_register_irq(struct rt9465_info *info)
|
|
{
|
|
int ret = 0, len = 0;
|
|
char *name = NULL;
|
|
|
|
/* request gpio */
|
|
len = strlen(info->desc->chg_dev_name);
|
|
name = devm_kzalloc(info->dev, len + 10, GFP_KERNEL);
|
|
ret = snprintf(name, len + 10, "%s_irq_gpio", info->desc->chg_dev_name);
|
|
if (ret >= (len + 10))
|
|
chr_info("%s: name truncated\n", __func__);
|
|
ret = devm_gpio_request_one(info->dev, info->intr_gpio, GPIOF_IN, name);
|
|
if (ret < 0) {
|
|
chr_err("%s: gpio request fail\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
ret = gpio_to_irq(info->intr_gpio);
|
|
if (ret < 0) {
|
|
chr_err("%s: irq mapping fail\n", __func__);
|
|
goto err;
|
|
}
|
|
info->irq = ret;
|
|
chr_info("%s: irq = %d\n", __func__, info->irq);
|
|
|
|
/* Request threaded IRQ */
|
|
ret = devm_request_threaded_irq(info->dev, info->irq, NULL,
|
|
rt9465_irq_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, name,
|
|
info);
|
|
if (ret < 0) {
|
|
chr_err("%s: request thread irq failed\n", __func__);
|
|
goto err;
|
|
}
|
|
device_init_wakeup(info->dev, true);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_maskall_irq(struct rt9465_info *info)
|
|
{
|
|
chr_info("%s\n", __func__);
|
|
return rt9465_i2c_block_write(info, RT9465_REG_CHG_STATC_MASK,
|
|
ARRAY_SIZE(rt9465_irq_maskall), rt9465_irq_maskall);
|
|
}
|
|
|
|
static int rt9465_init_irq(struct rt9465_info *info)
|
|
{
|
|
chr_info("%s\n", __func__);
|
|
return rt9465_i2c_block_write(info, RT9465_REG_CHG_STATC,
|
|
ARRAY_SIZE(rt9465_irqmask), rt9465_irqmask);
|
|
}
|
|
|
|
static bool rt9465_is_hw_exist(struct rt9465_info *info)
|
|
{
|
|
int ret = 0;
|
|
u8 version = 0;
|
|
|
|
ret = i2c_smbus_read_byte_data(info->i2c, RT9465_REG_SYSTEM1);
|
|
version = (ret & RT9465_MASK_VERSION) >> RT9465_SHIFT_VERSION;
|
|
chr_info("%s: E%d(0x%02X)\n", __func__, version + 1,
|
|
version);
|
|
|
|
if (version < RT9465_VERSION_E5) {
|
|
chr_err("%s: chip version is incorrect\n", __func__);
|
|
return false;
|
|
}
|
|
|
|
info->chip_rev = version;
|
|
return true;
|
|
}
|
|
|
|
static int rt9465_set_safety_timer(struct rt9465_info *info, u32 hr)
|
|
{
|
|
u8 reg_st = 0;
|
|
|
|
reg_st = rt9465_closest_reg_via_tbl(rt9465_safety_timer,
|
|
ARRAY_SIZE(rt9465_safety_timer), hr);
|
|
|
|
chr_info("%s: st = %d(0x%02X)\n", __func__, hr, reg_st);
|
|
|
|
return rt9465_i2c_update_bits(info, RT9465_REG_CHG_CTRL9,
|
|
reg_st << RT9465_SHIFT_WT_FC, RT9465_MASK_WT_FC);
|
|
}
|
|
|
|
static inline int rt9465_enable_wdt(struct rt9465_info *info, bool en)
|
|
{
|
|
chr_info("%s: en = %d\n", __func__, en);
|
|
return (en ? rt9465_set_bit : rt9465_clr_bit)
|
|
(info, RT9465_REG_CHG_CTRL10, RT9465_MASK_WDT_EN);
|
|
}
|
|
|
|
static inline int rt9465_reset_chip(struct rt9465_info *info)
|
|
{
|
|
chr_info("%s\n", __func__);
|
|
return rt9465_i2c_write_byte(info, RT9465_REG_CHG_CTRL0, 0x80);
|
|
}
|
|
|
|
static inline int rt9465_enable_te(struct rt9465_info *info, bool en)
|
|
{
|
|
chr_info("%s: en = %d\n", __func__, en);
|
|
return (en ? rt9465_set_bit : rt9465_clr_bit)
|
|
(info, RT9465_REG_CHG_CTRL8, RT9465_MASK_TE_EN);
|
|
}
|
|
|
|
static int rt9465_set_ieoc(struct rt9465_info *info, u32 ieoc)
|
|
{
|
|
u8 reg_ieoc = 0;
|
|
|
|
/* Workaround for E1, IEOC must >= 700mA */
|
|
if (ieoc < 700000 && info->chip_rev == RT9465_VERSION_E1)
|
|
ieoc = 700000;
|
|
|
|
/* Find corresponding reg value */
|
|
reg_ieoc = rt9465_closest_reg(RT9465_IEOC_MIN, RT9465_IEOC_MAX,
|
|
RT9465_IEOC_STEP, ieoc);
|
|
|
|
/* ieoc starts from 600mA and its register value is 0x05 */
|
|
reg_ieoc += 0x05;
|
|
|
|
chr_info("%s: ieoc = %d(0x%02X)\n", __func__, ieoc,
|
|
reg_ieoc);
|
|
|
|
return rt9465_i2c_update_bits(info, RT9465_REG_CHG_CTRL7,
|
|
reg_ieoc << RT9465_SHIFT_IEOC, RT9465_MASK_IEOC);
|
|
}
|
|
|
|
static int __rt9465_get_mivr(struct rt9465_info *info, u32 *mivr)
|
|
{
|
|
int ret = 0;
|
|
u8 reg_mivr = 0;
|
|
|
|
ret = rt9465_i2c_read_byte(info, RT9465_REG_CHG_CTRL5);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg_mivr = ((ret & RT9465_MASK_MIVR) >> RT9465_SHIFT_MIVR) & 0xFF;
|
|
*mivr = rt9465_closest_value(RT9465_MIVR_MIN, RT9465_MIVR_MAX,
|
|
RT9465_MIVR_STEP, reg_mivr);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_get_charging_status(struct rt9465_info *info,
|
|
enum rt9465_charging_status *chg_stat)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = rt9465_i2c_read_byte(info, RT9465_REG_SYSTEM1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*chg_stat = (ret & RT9465_MASK_CHG_STAT) >> RT9465_SHIFT_CHG_STAT;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_get_ieoc(struct rt9465_info *info, u32 *ieoc)
|
|
{
|
|
int ret = 0;
|
|
u8 reg_ieoc = 0;
|
|
|
|
ret = rt9465_i2c_read_byte(info, RT9465_REG_CHG_CTRL7);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg_ieoc = (ret & RT9465_MASK_IEOC) >> RT9465_SHIFT_IEOC;
|
|
|
|
/* ieoc starts from 600mA and its register value is 0x05 */
|
|
reg_ieoc -= 0x05;
|
|
*ieoc = rt9465_closest_value(RT9465_IEOC_MIN, RT9465_IEOC_MAX,
|
|
RT9465_IEOC_STEP, reg_ieoc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline int rt9465_get_irq_number(struct rt9465_info *info,
|
|
const char *name)
|
|
{
|
|
int i = 0;
|
|
|
|
if (!name) {
|
|
chr_err("%s: null name\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(rt9465_irq_mapping_tbl); i++) {
|
|
if (!strcmp(name, rt9465_irq_mapping_tbl[i].name))
|
|
return i;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int rt9465_parse_dt(struct rt9465_info *info, struct device *dev)
|
|
{
|
|
int ret = 0, irqcnt = 0, irqnum = 0;
|
|
struct rt9465_desc *desc = NULL;
|
|
struct device_node *np = dev->of_node;
|
|
const char *name = NULL;
|
|
int len = 0;
|
|
char *en_name = NULL;
|
|
|
|
chr_info("%s\n", __func__);
|
|
|
|
if (!np) {
|
|
chr_err("%s: no device node\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
info->desc = &rt9465_default_desc;
|
|
|
|
desc = devm_kzalloc(dev, sizeof(struct rt9465_desc), GFP_KERNEL);
|
|
if (!desc)
|
|
return -ENOMEM;
|
|
memcpy(desc, &rt9465_default_desc, sizeof(struct rt9465_desc));
|
|
|
|
/*
|
|
* For dual charger, one is primary_chg;
|
|
* another one will be secondary_chg
|
|
*/
|
|
if (of_property_read_string(np, "charger_name",
|
|
&desc->chg_dev_name) < 0)
|
|
chr_err("%s: no charger name\n", __func__);
|
|
|
|
if (of_property_read_u32(np, "regmap_represent_slave_addr",
|
|
&(desc->regmap_represent_slave_addr)) < 0)
|
|
chr_err("%s: no regmap represent slave addr\n",
|
|
__func__);
|
|
|
|
if (of_property_read_string(np, "regmap_name", &desc->regmap_name) < 0)
|
|
chr_err("%s: no regmap name\n", __func__);
|
|
|
|
if (of_property_read_string(np, "alias_name", &desc->alias_name) < 0)
|
|
chr_err("%s: no alias name\n", __func__);
|
|
|
|
#if (!defined(CONFIG_MTK_GPIO) || defined(CONFIG_MTK_GPIOLIB_STAND))
|
|
ret = of_get_named_gpio(np, "rt,en_gpio", 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
info->en_gpio = ret;
|
|
#else
|
|
ret = of_property_read_u32(np, "rt,en_gpio_num", &info->en_gpio);
|
|
if (ret < 0)
|
|
return ret;
|
|
#endif /* !CONFIG_MTK_GPIO || CONFIG_MTK_GPIOLIB_STAND */
|
|
|
|
chr_info("%s: intr/en gpio = %d, %d\n", __func__,
|
|
info->intr_gpio, info->en_gpio);
|
|
|
|
/* request en gpio */
|
|
len = strlen(desc->chg_dev_name);
|
|
en_name = devm_kzalloc(info->dev, len + 9, GFP_KERNEL);
|
|
snprintf(en_name, len + 9, "%s_en_gpio", desc->chg_dev_name);
|
|
ret = devm_gpio_request_one(info->dev, info->en_gpio, GPIOF_DIR_OUT,
|
|
en_name);
|
|
if (ret < 0) {
|
|
chr_err("%s: en gpio request fail\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
#if (!defined(CONFIG_MTK_GPIO) || defined(CONFIG_MTK_GPIOLIB_STAND))
|
|
ret = of_get_named_gpio(np, "rt,intr_gpio", 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
info->intr_gpio = ret;
|
|
#else
|
|
ret = of_property_read_u32(np, "rt,intr_gpio_num", &info->intr_gpio);
|
|
if (ret < 0)
|
|
return ret;
|
|
#endif
|
|
chr_info("%s: intr/en gpio = %d, %d\n", __func__,
|
|
info->intr_gpio, info->en_gpio);
|
|
|
|
if (of_property_read_u32(np, "ichg", &desc->ichg) < 0)
|
|
chr_err("%s: no ichg\n", __func__);
|
|
|
|
if (of_property_read_u32(np, "mivr", &desc->mivr) < 0)
|
|
chr_err("%s: no mivr\n", __func__);
|
|
|
|
if (of_property_read_u32(np, "cv", &desc->cv) < 0)
|
|
chr_err("%s: no cv\n", __func__);
|
|
|
|
if (of_property_read_u32(np, "ieoc", &desc->ieoc) < 0)
|
|
chr_err("%s: no ieoc\n", __func__);
|
|
|
|
if (of_property_read_u32(np, "safety_timer", &desc->safety_timer) < 0)
|
|
chr_err("%s: no safety timer\n", __func__);
|
|
|
|
desc->en_te = of_property_read_bool(np, "en_te");
|
|
desc->en_wdt = of_property_read_bool(np, "en_wdt");
|
|
desc->en_st = of_property_read_bool(np, "en_st");
|
|
|
|
while (true) {
|
|
ret = of_property_read_string_index(np, "interrupt-names",
|
|
irqcnt, &name);
|
|
if (ret < 0)
|
|
break;
|
|
irqcnt++;
|
|
irqnum = rt9465_get_irq_number(info, name);
|
|
if (irqnum >= 0)
|
|
rt9465_irq_unmask(info, irqnum);
|
|
}
|
|
|
|
info->desc = desc;
|
|
info->chg_props.alias_name = info->desc->alias_name;
|
|
chr_info("%s: chg_name:%s alias:%s\n", __func__,
|
|
info->desc->chg_dev_name, info->chg_props.alias_name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __rt9465_enable_chip(struct rt9465_info *info, bool en)
|
|
{
|
|
bool is_chip_en = false;
|
|
|
|
chr_info("%s: en = %d\n", __func__, en);
|
|
|
|
mutex_lock(&info->gpio_access_lock);
|
|
is_chip_en = __rt9465_is_chip_en(info);
|
|
if (en && !is_chip_en) {
|
|
gpio_set_value(info->en_gpio, 1);
|
|
chr_info("%s: set gpio high\n", __func__);
|
|
} else if (!en && is_chip_en) {
|
|
gpio_set_value(info->en_gpio, 0);
|
|
chr_info("%s: set gpio low\n", __func__);
|
|
}
|
|
|
|
/* Wait for chip's enable/disable */
|
|
mdelay(1);
|
|
atomic_set(&info->is_chip_en, en);
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
return 0;
|
|
}
|
|
|
|
static int __rt9465_set_ichg(struct rt9465_info *info, u32 uA)
|
|
{
|
|
u8 reg_ichg = 0;
|
|
|
|
/* Workaround for E1, Ichg must >= 1000mA */
|
|
if (uA < 1000000 && info->chip_rev == RT9465_VERSION_E1)
|
|
uA = 1000000;
|
|
|
|
/* Find corresponding reg value */
|
|
reg_ichg = rt9465_closest_reg(RT9465_ICHG_MIN, RT9465_ICHG_MAX,
|
|
RT9465_ICHG_STEP, uA);
|
|
|
|
/* ichg starts from 600mA and its register value is 0x06 */
|
|
reg_ichg += 0x06;
|
|
|
|
chr_info("%s: ichg = %d(0x%02X)\n", __func__, uA, reg_ichg);
|
|
|
|
return rt9465_i2c_update_bits(info, RT9465_REG_CHG_CTRL6,
|
|
reg_ichg << RT9465_SHIFT_ICHG, RT9465_MASK_ICHG);
|
|
}
|
|
|
|
static int __rt9465_set_mivr(struct rt9465_info *info, u32 uV)
|
|
{
|
|
u8 reg_mivr = 0;
|
|
|
|
/* Find corresponding reg value */
|
|
reg_mivr = rt9465_closest_reg(RT9465_MIVR_MIN, RT9465_MIVR_MAX,
|
|
RT9465_MIVR_STEP, uV);
|
|
|
|
chr_info("%s: mivr = %d(0x%02X)\n", __func__, uV, reg_mivr);
|
|
|
|
return rt9465_i2c_update_bits(info, RT9465_REG_CHG_CTRL5,
|
|
reg_mivr << RT9465_SHIFT_MIVR, RT9465_MASK_MIVR);
|
|
}
|
|
|
|
static int __rt9465_set_cv(struct rt9465_info *info, u32 uV)
|
|
{
|
|
u8 reg_cv = 0;
|
|
|
|
reg_cv = rt9465_closest_reg(RT9465_BAT_VOREG_MIN, RT9465_BAT_VOREG_MAX,
|
|
RT9465_BAT_VOREG_STEP, uV);
|
|
|
|
chr_info("%s: cv = %d(0x%02X)\n", __func__, uV, reg_cv);
|
|
|
|
return rt9465_i2c_update_bits(info, RT9465_REG_CHG_CTRL3,
|
|
reg_cv << RT9465_SHIFT_BAT_VOREG, RT9465_MASK_BAT_VOREG);
|
|
}
|
|
|
|
static int __rt9465_enable_safety_timer(struct rt9465_info *info, bool en)
|
|
{
|
|
chr_info("%s: en = %d\n", __func__, en);
|
|
return (en ? rt9465_set_bit : rt9465_clr_bit)
|
|
(info, RT9465_REG_CHG_CTRL9, RT9465_MASK_TMR_EN);
|
|
}
|
|
|
|
static int rt9465_init_setting(struct rt9465_info *info)
|
|
{
|
|
int ret = 0;
|
|
u8 evt[RT9465_IRQIDX_MAX] = {0};
|
|
struct rt9465_desc *desc = info->desc;
|
|
|
|
chr_info("%s\n", __func__);
|
|
|
|
ret = rt9465_maskall_irq(info);
|
|
if (ret < 0) {
|
|
chr_err("%s: mask all irq fail\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
/* clear evt */
|
|
ret = rt9465_i2c_block_read(info, RT9465_REG_CHG_STATC, ARRAY_SIZE(evt),
|
|
evt);
|
|
if (ret < 0) {
|
|
chr_err("%s: read evt fail\n", __func__);
|
|
goto err;
|
|
}
|
|
|
|
ret = __rt9465_set_ichg(info, desc->ichg);
|
|
if (ret < 0)
|
|
chr_err("%s: set ichg fail\n", __func__);
|
|
|
|
ret = __rt9465_set_mivr(info, desc->mivr);
|
|
if (ret < 0)
|
|
chr_err("%s: set mivr fail\n", __func__);
|
|
|
|
ret = rt9465_set_ieoc(info, desc->ieoc);
|
|
if (ret < 0)
|
|
chr_err("%s: set ieoc fail\n", __func__);
|
|
|
|
ret = __rt9465_set_cv(info, desc->cv);
|
|
if (ret < 0)
|
|
chr_err("%s: set cv fail\n", __func__);
|
|
|
|
ret = rt9465_enable_te(info, desc->en_te);
|
|
if (ret < 0)
|
|
chr_err("%s: set te fail\n", __func__);
|
|
|
|
ret = rt9465_set_safety_timer(info, desc->safety_timer);
|
|
if (ret < 0)
|
|
chr_err("%s: set safety timer fail\n", __func__);
|
|
|
|
ret = __rt9465_enable_safety_timer(info, desc->en_st);
|
|
if (ret < 0)
|
|
chr_err("%s: enable charger timer fail\n", __func__);
|
|
|
|
ret = rt9465_enable_wdt(info, desc->en_wdt);
|
|
if (ret < 0)
|
|
chr_err("%s: enable watchdog fail\n", __func__);
|
|
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
/* =========================================================== */
|
|
/* The following is released interfaces */
|
|
/* =========================================================== */
|
|
|
|
static int rt9465_enable_chip(struct charger_device *chg_dev, bool en)
|
|
{
|
|
int ret = 0;
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
ret = __rt9465_enable_chip(info, en);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!en)
|
|
return 0;
|
|
|
|
/* Do the following flow for enabling chip */
|
|
if (!rt9465_is_hw_exist(info)) {
|
|
chr_info("%s: no rt9465 exists\n", __func__);
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = rt9465_init_setting(info);
|
|
if (ret < 0)
|
|
chr_info("%s: init fail(%d)\n", __func__, ret);
|
|
|
|
ret = rt9465_sw_workaround(info);
|
|
if (ret < 0)
|
|
chr_info("%s: sw wkard fail(%d)\n", __func__, ret);
|
|
|
|
ret = rt9465_init_irq(info);
|
|
if (ret < 0)
|
|
chr_info("%s: init irq fail(%d)\n", __func__, ret);
|
|
|
|
rt9465_dump_register(info->chg_dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_is_chip_enabled(struct charger_device *chg_dev, bool *en)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
mutex_lock(&info->gpio_access_lock);
|
|
*en = __rt9465_is_chip_en(info);
|
|
mutex_unlock(&info->gpio_access_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rt9465_is_charging_enabled(struct charger_device *chg_dev, bool *en)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return rt9465_i2c_test_bit(info, RT9465_REG_CHG_CTRL1,
|
|
RT9465_SHIFT_CHG_EN, en);
|
|
}
|
|
|
|
static int rt9465_dump_register(struct charger_device *chg_dev)
|
|
{
|
|
int i = 0, ret = 0;
|
|
int ichg = 0;
|
|
u32 mivr = 0, ieoc = 0;
|
|
bool chg_enable = 0;
|
|
enum rt9465_charging_status chg_status = RT9465_CHG_STATUS_READY;
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
u8 chg_stat = 0;
|
|
|
|
ret = rt9465_get_ichg(chg_dev, &ichg);
|
|
ret = __rt9465_get_mivr(info, &mivr);
|
|
ret = rt9465_is_charging_enabled(chg_dev, &chg_enable);
|
|
ret = rt9465_get_ieoc(info, &ieoc);
|
|
ret = rt9465_get_charging_status(info, &chg_status);
|
|
chg_stat = rt9465_i2c_read_byte(info, RT9465_REG_CHG_STATC);
|
|
|
|
/* Dump register if in fault status */
|
|
if (chg_status == RT9465_CHG_STATUS_FAULT) {
|
|
for (i = 0; i < ARRAY_SIZE(rt9465_reg_addr); i++)
|
|
ret = rt9465_i2c_read_byte(info, rt9465_reg_addr[i]);
|
|
}
|
|
|
|
chr_info("%s: ICHG = %dmA, MIVR = %dmV, IEOC = %dmA\n",
|
|
__func__, ichg / 1000, mivr / 1000, ieoc / 1000);
|
|
|
|
chr_info("%s: CHG_EN = %d, CHG_STATUS = %s, CHG_STAT = 0x%02X\n",
|
|
__func__, chg_enable, rt9465_chg_status_name[chg_status],
|
|
chg_stat);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_enable_charging(struct charger_device *chg_dev, bool en)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return (en ? rt9465_set_bit : rt9465_clr_bit)
|
|
(info, RT9465_REG_CHG_CTRL1, RT9465_MASK_CHG_EN);
|
|
}
|
|
|
|
static int rt9465_enable_safety_timer(struct charger_device *chg_dev, bool en)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return __rt9465_enable_safety_timer(info, en);
|
|
}
|
|
|
|
static int rt9465_set_ichg(struct charger_device *chg_dev, u32 uA)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return __rt9465_set_ichg(info, uA);
|
|
}
|
|
|
|
static int rt9465_set_mivr(struct charger_device *chg_dev, u32 uV)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return __rt9465_set_mivr(info, uV);
|
|
}
|
|
|
|
static int rt9465_get_mivr_state(struct charger_device *chg_dev, bool *in_loop)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return rt9465_i2c_test_bit(info, RT9465_REG_CHG_STATC,
|
|
RT9465_SHIFT_CHG_MIVR, in_loop);
|
|
}
|
|
|
|
static int rt9465_set_cv(struct charger_device *chg_dev, u32 uV)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return __rt9465_set_cv(info, uV);
|
|
}
|
|
|
|
static int rt9465_get_ichg(struct charger_device *chg_dev, u32 *uA)
|
|
{
|
|
int ret = 0;
|
|
u8 reg_ichg = 0;
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
ret = rt9465_i2c_read_byte(info, RT9465_REG_CHG_CTRL6);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
reg_ichg = (ret & RT9465_MASK_ICHG) >> RT9465_SHIFT_ICHG;
|
|
reg_ichg -= 0x06;
|
|
*uA = rt9465_closest_value(RT9465_ICHG_MIN, RT9465_ICHG_MAX,
|
|
RT9465_ICHG_STEP, reg_ichg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_get_min_ichg(struct charger_device *chg_dev, u32 *uA)
|
|
{
|
|
*uA = rt9465_closest_value(RT9465_ICHG_MIN, RT9465_ICHG_MAX,
|
|
RT9465_ICHG_STEP, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int rt9465_get_mivr(struct charger_device *chg_dev, u32 *uV)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
return __rt9465_get_mivr(info, uV);
|
|
}
|
|
|
|
static int rt9465_get_tchg(struct charger_device *chg_dev,
|
|
int *tchg_min, int *tchg_max)
|
|
{
|
|
int ret = 0, reg_adc_temp = 0, adc_temp = 0;
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
mutex_lock(&info->adc_access_lock);
|
|
|
|
/* Get value from ADC */
|
|
ret = rt9465_i2c_read_byte(info, RT9465_REG_CHG_CTRL12);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
reg_adc_temp = (ret & RT9465_MASK_ADC_RPT) >> RT9465_SHIFT_ADC_RPT;
|
|
if (reg_adc_temp == 0x00) {
|
|
*tchg_min = 0;
|
|
*tchg_max = 60;
|
|
} else {
|
|
reg_adc_temp -= 0x01;
|
|
adc_temp = rt9465_closest_value(RT9465_ADC_RPT_MIN,
|
|
RT9465_ADC_RPT_MAX, RT9465_ADC_RPT_STEP, reg_adc_temp);
|
|
*tchg_min = adc_temp + 1;
|
|
*tchg_max = adc_temp + RT9465_ADC_RPT_STEP;
|
|
}
|
|
|
|
chr_info("%s: %d < temperature <= %d\n", __func__, *tchg_min,
|
|
*tchg_max);
|
|
|
|
out:
|
|
mutex_unlock(&info->adc_access_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_is_charging_done(struct charger_device *chg_dev, bool *done)
|
|
{
|
|
int ret = 0;
|
|
enum rt9465_charging_status chg_stat = RT9465_CHG_STATUS_READY;
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
|
|
ret = rt9465_get_charging_status(info, &chg_stat);
|
|
|
|
/* Return is charging done or not */
|
|
switch (chg_stat) {
|
|
case RT9465_CHG_STATUS_READY:
|
|
case RT9465_CHG_STATUS_PROGRESS:
|
|
case RT9465_CHG_STATUS_FAULT:
|
|
*done = false;
|
|
break;
|
|
case RT9465_CHG_STATUS_DONE:
|
|
*done = true;
|
|
break;
|
|
default:
|
|
*done = false;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int rt9465_kick_wdt(struct charger_device *chg_dev)
|
|
{
|
|
int ret = 0;
|
|
struct rt9465_info *info = dev_get_drvdata(&chg_dev->dev);
|
|
enum rt9465_charging_status chg_status = RT9465_CHG_STATUS_READY;
|
|
|
|
/* Workaround: enable/disable watchdog to kick it */
|
|
if (info->chip_rev <= RT9465_VERSION_E2) {
|
|
ret = rt9465_enable_wdt(info, false);
|
|
if (ret < 0)
|
|
chr_err("%s: disable wdt failed\n",
|
|
__func__);
|
|
|
|
ret = rt9465_enable_wdt(info, true);
|
|
if (ret < 0)
|
|
chr_err("%s: enable wdt failed\n", __func__);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Any I2C communication can kick wdt */
|
|
return rt9465_get_charging_status(info, &chg_status);
|
|
}
|
|
|
|
static struct charger_ops rt9465_chg_ops = {
|
|
.enable = rt9465_enable_charging,
|
|
.is_enabled = rt9465_is_charging_enabled,
|
|
.is_chip_enabled = rt9465_is_chip_enabled,
|
|
.enable_safety_timer = rt9465_enable_safety_timer,
|
|
.enable_chip = rt9465_enable_chip,
|
|
.dump_registers = rt9465_dump_register,
|
|
.is_charging_done = rt9465_is_charging_done,
|
|
.get_charging_current = rt9465_get_ichg,
|
|
.set_charging_current = rt9465_set_ichg,
|
|
.get_min_charging_current = rt9465_get_min_ichg,
|
|
.set_constant_voltage = rt9465_set_cv,
|
|
.kick_wdt = rt9465_kick_wdt,
|
|
.get_tchg_adc = rt9465_get_tchg,
|
|
.get_mivr = rt9465_get_mivr,
|
|
.set_mivr = rt9465_set_mivr,
|
|
.get_mivr_state = rt9465_get_mivr_state,
|
|
};
|
|
|
|
/* ========================= */
|
|
/* I2C driver function */
|
|
/* ========================= */
|
|
|
|
static int rt9465_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *dev_id)
|
|
{
|
|
int ret = 0;
|
|
struct rt9465_info *info = NULL;
|
|
|
|
pr_info("%s (%s)\n", __func__, RT9465_DRV_VERSION);
|
|
|
|
info = devm_kzalloc(&i2c->dev, sizeof(struct rt9465_info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->i2c = i2c;
|
|
info->dev = &i2c->dev;
|
|
mutex_init(&info->i2c_access_lock);
|
|
mutex_init(&info->adc_access_lock);
|
|
mutex_init(&info->gpio_access_lock);
|
|
mutex_init(&info->irq_access_lock);
|
|
mutex_init(&info->hidden_mode_lock);
|
|
atomic_set(&info->is_chip_en, 0);
|
|
|
|
/* Must parse en gpio */
|
|
ret = rt9465_parse_dt(info, &i2c->dev);
|
|
if (ret < 0) {
|
|
chr_err("%s: parse dt failed\n", __func__);
|
|
goto err_parse_dt;
|
|
}
|
|
i2c_set_clientdata(i2c, info);
|
|
|
|
#ifdef CONFIG_RT_REGMAP
|
|
ret = rt9465_register_rt_regmap(info);
|
|
if (ret < 0)
|
|
goto err_register_regmap;
|
|
#endif
|
|
|
|
/* Register charger device */
|
|
info->chg_dev = charger_device_register(info->desc->chg_dev_name,
|
|
&i2c->dev, info, &rt9465_chg_ops, &info->chg_props);
|
|
if (IS_ERR_OR_NULL(info->chg_dev)) {
|
|
ret = PTR_ERR(info->chg_dev);
|
|
goto err_register_chg_dev;
|
|
}
|
|
|
|
ret = rt9465_register_irq(info);
|
|
if (ret < 0) {
|
|
chr_err("%s: reg irq fail(%d)\n", __func__, ret);
|
|
goto err_register_irq;
|
|
}
|
|
|
|
chr_info("%s: successfully\n", __func__);
|
|
|
|
return ret;
|
|
|
|
err_register_irq:
|
|
err_register_chg_dev:
|
|
#ifdef CONFIG_RT_REGMAP
|
|
rt_regmap_device_unregister(info->regmap_dev);
|
|
err_register_regmap:
|
|
#endif
|
|
err_parse_dt:
|
|
mutex_destroy(&info->adc_access_lock);
|
|
mutex_destroy(&info->i2c_access_lock);
|
|
mutex_destroy(&info->gpio_access_lock);
|
|
mutex_destroy(&info->irq_access_lock);
|
|
mutex_destroy(&info->hidden_mode_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int rt9465_remove(struct i2c_client *i2c)
|
|
{
|
|
int ret = 0;
|
|
struct rt9465_info *info = i2c_get_clientdata(i2c);
|
|
|
|
pr_info("%s\n", __func__);
|
|
|
|
if (info) {
|
|
if (info->chg_dev)
|
|
charger_device_unregister(info->chg_dev);
|
|
#ifdef CONFIG_RT_REGMAP
|
|
rt_regmap_device_unregister(info->regmap_dev);
|
|
#endif
|
|
mutex_destroy(&info->adc_access_lock);
|
|
mutex_destroy(&info->i2c_access_lock);
|
|
mutex_destroy(&info->gpio_access_lock);
|
|
mutex_destroy(&info->irq_access_lock);
|
|
mutex_destroy(&info->hidden_mode_lock);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void rt9465_shutdown(struct i2c_client *i2c)
|
|
{
|
|
int ret = 0;
|
|
struct rt9465_info *info = i2c_get_clientdata(i2c);
|
|
|
|
pr_info("%s\n", __func__);
|
|
|
|
if (info) {
|
|
ret = rt9465_reset_chip(info);
|
|
if (ret < 0)
|
|
chr_err("%s: sw reset failed\n", __func__);
|
|
}
|
|
}
|
|
|
|
static int rt9465_suspend(struct device *dev)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(dev);
|
|
|
|
chr_info("%s\n", __func__);
|
|
if (device_may_wakeup(dev))
|
|
enable_irq_wake(info->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rt9465_resume(struct device *dev)
|
|
{
|
|
struct rt9465_info *info = dev_get_drvdata(dev);
|
|
|
|
chr_info("%s\n", __func__);
|
|
if (device_may_wakeup(dev))
|
|
disable_irq_wake(info->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(rt9465_pm_ops, rt9465_suspend, rt9465_resume);
|
|
|
|
static const struct i2c_device_id rt9465_i2c_id[] = {
|
|
{"rt9465", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, rt9465_i2c_id);
|
|
|
|
static const struct of_device_id rt9465_of_match[] = {
|
|
{ .compatible = "richtek,rt9465", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, rt9465_of_match);
|
|
|
|
#ifndef CONFIG_OF
|
|
#define RT9465_BUSNUM 1
|
|
|
|
static struct i2c_board_info rt9465_i2c_board_info __initdata = {
|
|
I2C_BOARD_INFO("rt9465", RT9465_SALVE_ADDR)
|
|
};
|
|
#endif /* CONFIG_OF */
|
|
|
|
|
|
static struct i2c_driver rt9465_i2c_driver = {
|
|
.driver = {
|
|
.name = "rt9465",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = of_match_ptr(rt9465_of_match),
|
|
.pm = &rt9465_pm_ops,
|
|
},
|
|
.probe = rt9465_probe,
|
|
.remove = rt9465_remove,
|
|
.shutdown = rt9465_shutdown,
|
|
.id_table = rt9465_i2c_id,
|
|
};
|
|
|
|
static int __init rt9465_init(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
#ifdef CONFIG_OF
|
|
pr_info("%s: with dts\n", __func__);
|
|
#else
|
|
pr_info("%s: without dts\n", __func__);
|
|
i2c_register_board_info(RT9465_BUSNUM, &rt9465_i2c_board_info, 1);
|
|
#endif
|
|
|
|
ret = i2c_add_driver(&rt9465_i2c_driver);
|
|
if (ret < 0)
|
|
chr_err("%s: register i2c driver fail\n", __func__);
|
|
|
|
return ret;
|
|
}
|
|
module_init(rt9465_init);
|
|
|
|
|
|
static void __exit rt9465_exit(void)
|
|
{
|
|
i2c_del_driver(&rt9465_i2c_driver);
|
|
}
|
|
module_exit(rt9465_exit);
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("ShuFanLee <shufan_lee@richtek.com>");
|
|
MODULE_DESCRIPTION("RT9465 Charger Driver");
|
|
MODULE_VERSION(RT9465_DRV_VERSION);
|
|
|
|
|
|
/*
|
|
* Version Note
|
|
* 1.0.11
|
|
* (1) Remove mt6336 and mt6306 related code
|
|
*
|
|
* 1.0.10
|
|
* (1) Remove retries for chip id check
|
|
* (2) Move chip check from probe to enale_chip
|
|
*
|
|
* 1.0.9
|
|
* (1) Add more retries for chip id check
|
|
*
|
|
* 1.0.8
|
|
* (1) Use standard GPIO API instead of pinctrl
|
|
* (2) Remove EN pin pull high, lock i2c adapter workaround
|
|
* (3) Add mt6306 gpio expander control
|
|
*
|
|
* 1.0.7
|
|
* (1) Modify init sequence in probe function
|
|
*
|
|
* 1.0.6
|
|
* (1) Modify the way to kick WDT and the name of enable_watchdog_timer to
|
|
* enable_wdt
|
|
* (2) Change pr_xxx to dev_xxx
|
|
*
|
|
* 1.0.5
|
|
* (1) Modify charger name to secondary_chg
|
|
*
|
|
* 1.0.4
|
|
* (1) Modify some pr_debug to pr_debug_ratelimited
|
|
* (2) Modify the way to parse dt
|
|
*
|
|
* 1.0.3
|
|
* (1) Modify rt9465_is_hw_exist to support all version
|
|
* (2) Correct chip version
|
|
* (3) Release rt9465_is_charging_enabled/rt9465_get_min_ichg
|
|
*
|
|
* 1.0.2
|
|
* (1) Add ICHG accuracy workaround for E2
|
|
* (2) Support E3 chip
|
|
* (3) Add config to separate EN pin from MT6336 or AP
|
|
*
|
|
* 1.0.1
|
|
* (1) Remove registering power supply class
|
|
*
|
|
* 1.0.0
|
|
* Initial Release
|
|
*/
|