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kernel_samsung_a34x-permissive/drivers/power/supply/mtk_pd.c
Fede2782 6db4831e98
Import A346BXXU4BWK2 kernel source 
Android 14
2024-04-28 15:51:13 +02:00

1362 lines
31 KiB
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 MediaTek Inc.
*/
/*
*
* Filename:
* ---------
* mtk_pd.c
*
* Project:
* --------
* Android_Software
*
* Description:
* ------------
* This Module defines functions of Battery charging
*
* Author:
* -------
* Wy Chuang
*
*/
#include <linux/init.h> /* For init/exit macros */
#include <linux/module.h> /* For MODULE_ marcros */
#include <linux/fs.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/kdev_t.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/poll.h>
#include <linux/power_supply.h>
#include <linux/pm_wakeup.h>
#include <linux/time.h>
#include <linux/mutex.h>
#include <linux/kthread.h>
#include <linux/proc_fs.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <linux/scatterlist.h>
#include <linux/suspend.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/reboot.h>
#include "mtk_pd.h"
#include "mtk_charger_algorithm_class.h"
static int pd_dbg_level = PD_DEBUG_LEVEL;
#define PD_VBUS_IR_DROP_THRESHOLD 1200
int pd_get_debug_level(void)
{
return pd_dbg_level;
}
static char *pd_state_to_str(int state)
{
switch (state) {
case PD_HW_UNINIT:
return "PD_HW_UNINIT";
case PD_HW_FAIL:
return "PD_HW_FAIL";
case PD_HW_READY:
return "PD_HW_READY";
case PD_TA_NOT_SUPPORT:
return "PD_TA_NOT_SUPPORT";
case PD_RUN:
return "PD_RUN";
case PD_TUNING:
return "PD_TUNING";
case PD_POSTCC:
return "PD_POSTCC";
default:
break;
}
pd_err("%s unknown state:%d\n", __func__
, state);
return "PD_UNKNOWN";
}
static int _pd_init_algo(struct chg_alg_device *alg)
{
struct mtk_pd *pd;
int cnt;
pd = dev_get_drvdata(&alg->dev);
pd_dbg("%s\n", __func__);
mutex_lock(&pd->access_lock);
if (pd_hal_init_hardware(alg) != 0) {
pd->state = PD_HW_FAIL;
pd_err("%s:init hw fail\n", __func__);
} else
pd->state = PD_HW_READY;
if (alg->config == DUAL_CHARGERS_IN_PARALLEL) {
pd_err("%s does not support DUAL_CHARGERS_IN_PARALLEL\n",
__func__);
alg->config = SINGLE_CHARGER;
} else if (alg->config == DUAL_CHARGERS_IN_SERIES) {
cnt = pd_hal_get_charger_cnt(alg);
if (cnt == 2)
alg->config = DUAL_CHARGERS_IN_SERIES;
else
alg->config = SINGLE_CHARGER;
} else
alg->config = SINGLE_CHARGER;
pd->pdc_max_watt_setting = -1;
pd->check_impedance = true;
pd->pd_cap_max_watt = -1;
pd->pd_idx = -1;
pd->pd_reset_idx = -1;
pd->pd_boost_idx = 0;
pd->pd_buck_idx = 0;
mutex_unlock(&pd->access_lock);
return 0;
}
static int _pd_is_algo_ready(struct chg_alg_device *alg)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
int ret_value;
int uisoc;
pd_err("%s %d\n", __func__, pd->state);
switch (pd->state) {
case PD_HW_UNINIT:
case PD_HW_FAIL:
ret_value = ALG_INIT_FAIL;
break;
case PD_HW_READY:
ret_value = pd_hal_is_pd_adapter_ready(alg);
if (ret_value == ALG_READY) {
uisoc = pd_hal_get_uisoc(alg);
if (pd->input_current_limit1 != -1 ||
pd->charging_current_limit1 != -1 ||
pd->input_current_limit2 != -1 ||
pd->charging_current_limit2 != -1 ||
uisoc >= pd->pd_stop_battery_soc)
ret_value = ALG_NOT_READY;
} else if (ret_value == ALG_TA_NOT_SUPPORT)
pd->state = PD_TA_NOT_SUPPORT;
else if (ret_value == ALG_TA_CHECKING)
pd->state = PD_HW_READY;
else
pd->state = PD_TA_NOT_SUPPORT;
break;
case PD_TA_NOT_SUPPORT:
ret_value = ALG_TA_NOT_SUPPORT;
break;
case PD_RUN:
case PD_TUNING:
case PD_POSTCC:
ret_value = ALG_RUNNING;
break;
default:
pd_err("PD unknown state:%d\n", pd->state);
ret_value = ALG_INIT_FAIL;
break;
}
return ret_value;
}
void __mtk_pdc_init_table(struct chg_alg_device *alg)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
pd->cap.nr = 0;
pd->cap.selected_cap_idx = -1;
if (pd_hal_is_pd_adapter_ready(alg) == ALG_READY)
pd_hal_get_adapter_cap(alg, &pd->cap);
else
pd_err("mtk_is_pdc_ready is fail\n");
pd_err("[%s] nr:%d default:%d\n", __func__, pd->cap.nr,
pd->cap.selected_cap_idx);
}
void __mtk_pdc_get_reset_idx(struct chg_alg_device *alg)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
struct pd_power_cap *cap;
int i = 0;
int idx = 0;
cap = &pd->cap;
if (pd->pd_reset_idx == -1) {
for (i = 0; i < cap->nr; i++) {
if (cap->min_mv[i] < pd->vbus_l ||
cap->max_mv[i] < pd->vbus_l ||
cap->min_mv[i] > pd->vbus_l ||
cap->max_mv[i] > pd->vbus_l) {
continue;
}
idx = i;
}
pd->pd_reset_idx = idx;
pd_err("[%s]reset idx:%d vbus:%d %d\n", __func__,
idx, cap->min_mv[idx], cap->max_mv[idx]);
}
}
void __mtk_pdc_get_cap_max_watt(struct chg_alg_device *alg)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
struct pd_power_cap *cap;
int i = 0;
int idx = 0;
cap = &pd->cap;
if (pd->pd_cap_max_watt == -1) {
for (i = 0; i < cap->nr; i++) {
if (cap->min_mv[i] <= pd->vbus_h &&
cap->min_mv[i] >= pd->vbus_l &&
cap->max_mv[i] <= pd->vbus_h &&
cap->max_mv[i] >= pd->vbus_l) {
if (cap->maxwatt[i] > pd->pd_cap_max_watt) {
pd->pd_cap_max_watt = cap->maxwatt[i];
idx = i;
}
pd_err("%d %d %d %d %d %d\n",
cap->min_mv[i],
cap->max_mv[i],
pd->vbus_h,
pd->vbus_l,
cap->maxwatt[i],
pd->pd_cap_max_watt);
continue;
}
}
pd_err("[%s]idx:%d vbus:%d %d maxwatt:%d\n", __func__,
idx, cap->min_mv[idx], cap->max_mv[idx],
pd->pd_cap_max_watt);
}
}
int __mtk_pdc_get_idx(struct chg_alg_device *alg, int selected_idx,
int *boost_idx, int *buck_idx)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
struct pd_power_cap *cap;
int i = 0;
int idx = 0;
cap = &pd->cap;
idx = selected_idx;
if (idx < 0) {
pd_err("[%s] invalid idx:%d\n", __func__, idx);
*boost_idx = 0;
*buck_idx = 0;
return -1;
}
/* get boost_idx */
for (i = 0; i < cap->nr; i++) {
if (cap->min_mv[i] < pd->vbus_l ||
cap->max_mv[i] < pd->vbus_l) {
pd_err("min_mv error:%d %d %d\n",
cap->min_mv[i],
cap->max_mv[i],
pd->vbus_l);
continue;
}
if (cap->min_mv[i] > pd->vbus_h ||
cap->max_mv[i] > pd->vbus_h) {
pd_err("max_mv error:%d %d %d\n",
cap->min_mv[i],
cap->max_mv[i],
pd->vbus_h);
continue;
}
if (idx == selected_idx) {
if (cap->maxwatt[i] > cap->maxwatt[idx])
idx = i;
} else {
if (cap->maxwatt[i] < cap->maxwatt[idx] &&
cap->maxwatt[i] > cap->maxwatt[selected_idx])
idx = i;
}
}
*boost_idx = idx;
idx = selected_idx;
/* get buck_idx */
for (i = 0; i < cap->nr; i++) {
if (cap->min_mv[i] < pd->vbus_l ||
cap->max_mv[i] < pd->vbus_l) {
pd_err("min_mv error:%d %d %d\n",
cap->min_mv[i],
cap->max_mv[i],
pd->vbus_l);
continue;
}
if (cap->min_mv[i] > pd->vbus_h ||
cap->max_mv[i] > pd->vbus_h) {
pd_err("max_mv error:%d %d %d\n",
cap->min_mv[i],
cap->max_mv[i],
pd->vbus_h);
continue;
}
if (idx == selected_idx) {
if (cap->maxwatt[i] < cap->maxwatt[idx])
idx = i;
} else {
if (cap->maxwatt[i] > cap->maxwatt[idx] &&
cap->maxwatt[i] < cap->maxwatt[selected_idx])
idx = i;
}
}
*buck_idx = idx;
return 0;
}
int __mtk_pdc_setup(struct chg_alg_device *alg, int idx)
{
int ret = -100;
unsigned int mivr;
unsigned int oldmivr = 4600000;
unsigned int oldmA = 3000000;
bool force_update = false;
int chg_cnt, is_chip_enabled, i;
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
if (pd->pd_idx == idx) {
pd_hal_get_mivr(alg, CHG1, &oldmivr);
if (pd->cap.max_mv[idx] - oldmivr / 1000 >
PD_VBUS_IR_DROP_THRESHOLD)
force_update = true;
chg_cnt = pd_hal_get_charger_cnt(alg);
if (chg_cnt > 1 && alg->config == DUAL_CHARGERS_IN_SERIES) {
for (i = CHG2; i < CHG_MAX; i++) {
is_chip_enabled =
pd_hal_is_chip_enable(alg, i);
if (is_chip_enabled) {
pd_hal_get_mivr(alg, CHG2, &oldmivr);
if (pd->cap.max_mv[idx] - oldmivr / 1000
> PD_VBUS_IR_DROP_THRESHOLD -
pd->slave_mivr_diff / 1000)
force_update = true;
}
}
}
}
if (pd->pd_idx != idx || force_update) {
if (pd->cap.max_mv[idx] > 5000)
pd_hal_enable_vbus_ovp(alg, false);
else
pd_hal_enable_vbus_ovp(alg, true);
pd_hal_get_mivr(alg, CHG1, &oldmivr);
mivr = pd->min_charger_voltage / 1000;
pd_hal_set_mivr(alg, CHG1, pd->min_charger_voltage);
pd_hal_get_input_current(alg, CHG1, &oldmA);
oldmA = oldmA / 1000;
#ifdef FIXME
if (info->data.parallel_vbus && (oldmA * 2 > pd->cap.ma[idx])) {
charger_dev_set_input_current(info->chg1_dev,
pd->cap.ma[idx] * 1000 / 2);
charger_dev_set_input_current(info->chg2_dev,
pd->cap.ma[idx] * 1000 / 2);
} else if (info->data.parallel_vbus == false &&
(oldmA > pd->cap.ma[idx]))
charger_dev_set_input_current(info->chg1_dev,
pd->cap.ma[idx] * 1000);
#endif
if (oldmA > pd->cap.ma[idx])
pd_hal_set_input_current(alg, CHG1,
pd->cap.ma[idx] * 1000);
ret = pd_hal_set_adapter_cap(alg, pd->cap.max_mv[idx],
pd->cap.ma[idx]);
if (ret == 0) {
#ifdef FIXME
if (info->data.parallel_vbus &&
(oldmA * 2 < pd->cap.ma[idx])) {
charger_dev_set_input_current(info->chg1_dev,
pd->cap.ma[idx] * 1000 / 2);
charger_dev_set_input_current(info->chg2_dev,
pd->cap.ma[idx] * 1000 / 2);
} else if (info->data.parallel_vbus == false &&
(oldmA < pd->cap.ma[idx]))
charger_dev_set_input_current(info->chg1_dev,
pd->cap.ma[idx] * 1000);
#endif
if (oldmA < pd->cap.ma[idx])
pd_hal_set_input_current(alg, CHG1,
pd->cap.ma[idx] * 1000);
if ((pd->cap.max_mv[idx] - PD_VBUS_IR_DROP_THRESHOLD)
> mivr)
mivr = pd->cap.max_mv[idx] -
PD_VBUS_IR_DROP_THRESHOLD;
pd_hal_set_mivr(alg, CHG1, mivr * 1000);
} else {
#ifdef FIXME
if (info->data.parallel_vbus &&
(oldmA * 2 > pd->cap.ma[idx])) {
charger_dev_set_input_current(info->chg1_dev,
oldmA * 1000 / 2);
charger_dev_set_input_current(info->chg2_dev,
oldmA * 1000 / 2);
} else if (info->data.parallel_vbus == false &&
(oldmA > pd->cap.ma[idx]))
charger_dev_set_input_current(info->chg1_dev,
oldmA * 1000);
#endif
if (oldmA > pd->cap.ma[idx])
pd_hal_set_input_current(alg, CHG1,
oldmA * 1000);
pd_hal_set_mivr(alg, CHG1, oldmivr);
}
__mtk_pdc_get_idx(alg, idx,
&pd->pd_boost_idx, &pd->pd_buck_idx);
}
pd_err("[%s]idx:%d:%d:%d:%d vbus:%d cur:%d ret:%d\n", __func__,
pd->pd_idx, idx, pd->pd_boost_idx, pd->pd_buck_idx,
pd->cap.max_mv[idx], pd->cap.ma[idx], ret);
pd->pd_idx = idx;
return ret;
}
void mtk_pdc_reset(struct chg_alg_device *alg)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
pd_err("%s: reset to default profile\n", __func__);
__mtk_pdc_init_table(alg);
__mtk_pdc_get_reset_idx(alg);
__mtk_pdc_setup(alg, pd->pd_reset_idx);
}
int __mtk_pdc_get_setting(struct chg_alg_device *alg, int *newvbus, int *newcur,
int *newidx)
{
int ret = 0;
int idx, selected_idx;
unsigned int pd_max_watt, pd_min_watt, now_max_watt;
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
int ibus = 0, vbus;
int chg2_watt = 0;
bool boost = false, buck = false;
struct pd_power_cap *cap;
unsigned int mivr1 = 0;
unsigned int mivr2 = 0;
bool chg1_mivr = false;
bool chg2_mivr = false;
int chg_cnt, i, is_chip_enabled;
__mtk_pdc_init_table(alg);
__mtk_pdc_get_reset_idx(alg);
__mtk_pdc_get_cap_max_watt(alg);
cap = &pd->cap;
if (cap->nr == 0)
return -1;
ret = pd_hal_get_ibus(alg, &ibus);
if (ret < 0) {
pd_err("[%s] get ibus fail, keep default voltage\n", __func__);
return -1;
}
#ifdef FIXME
if (info->data.parallel_vbus) {
ret = charger_dev_get_ibat(info->chg1_dev, &chg1_ibat);
if (ret < 0)
pd_err("[%s] get ibat fail\n", __func__);
ret = charger_dev_get_ibat(info->chg2_dev, &chg2_ibat);
if (ret < 0) {
ibat = battery_get_bat_current();
chg2_ibat = ibat * 100 - chg1_ibat;
}
if (ibat < 0 || chg2_ibat < 0)
chg2_watt = 0;
else
chg2_watt = chg2_ibat / 1000 * battery_get_bat_voltage()
/ info->data.chg2_eff * 100;
pd_err("[%s] chg2_watt:%d ibat2:%d ibat1:%d ibat:%d\n",
__func__, chg2_watt, chg2_ibat, chg1_ibat, ibat * 100);
}
#endif
pd_hal_get_mivr_state(alg, CHG1, &chg1_mivr);
pd_hal_get_mivr(alg, CHG1, &mivr1);
chg_cnt = pd_hal_get_charger_cnt(alg);
if (chg_cnt > 1 && alg->config == DUAL_CHARGERS_IN_SERIES) {
for (i = CHG2; i < CHG_MAX; i++) {
is_chip_enabled =
pd_hal_is_chip_enable(alg, i);
if (is_chip_enabled) {
pd_hal_get_mivr_state(alg, CHG2, &chg2_mivr);
pd_hal_get_mivr(alg, CHG2, &mivr2);
}
}
}
vbus = pd_hal_get_vbus(alg);
ibus = ibus / 1000;
if (ibus == 0)
ibus = 1000;
if ((chg1_mivr && (vbus < mivr1 / 1000 - 500)) ||
(chg2_mivr && (vbus < mivr2 / 1000 - 500)))
goto reset;
selected_idx = cap->selected_cap_idx;
idx = selected_idx;
if (idx < 0 || idx >= PD_CAP_MAX_NR)
idx = selected_idx = 0;
pd_err("idx:%d %d %d %d %d %d\n", idx,
cap->max_mv[idx],
cap->ma[idx],
cap->maxwatt[idx],
pd->ibus_err,
ibus);
pd_max_watt = cap->max_mv[idx] * (cap->ma[idx]
/ 100 * (100 - pd->ibus_err) - 100);
pd_dbg("pd_max_watt:%d %d %d %d %d\n", idx,
cap->max_mv[idx],
cap->ma[idx],
pd->ibus_err,
pd_max_watt);
now_max_watt = cap->max_mv[idx] * ibus + chg2_watt;
pd_dbg("now_max_watt:%d %d %d %d %d\n", idx,
cap->max_mv[idx],
ibus,
chg2_watt,
now_max_watt);
pd_min_watt = cap->max_mv[pd->pd_buck_idx] * cap->ma[pd->pd_buck_idx]
/ 100 * (100 - pd->ibus_err)
- pd->vsys_watt;
pd_dbg("pd_min_watt:%d %d %d %d %d\n", pd->pd_buck_idx,
cap->max_mv[pd->pd_buck_idx],
cap->ma[pd->pd_buck_idx],
pd->ibus_err,
pd->vsys_watt);
if (pd_min_watt <= 5000000)
pd_min_watt = 5000000;
if ((now_max_watt >= pd_max_watt) || chg1_mivr || chg2_mivr) {
*newidx = pd->pd_boost_idx;
boost = true;
} else if (now_max_watt <= pd_min_watt) {
*newidx = pd->pd_buck_idx;
buck = true;
} else {
*newidx = selected_idx;
boost = false;
buck = false;
}
*newvbus = cap->max_mv[*newidx];
*newcur = cap->ma[*newidx];
pd_err("[%s]watt:%d,%d,%d up:%d,%d vbus:%d ibus:%d, mivr:%d,%d\n",
__func__,
pd_max_watt, now_max_watt, pd_min_watt,
boost, buck,
vbus, ibus, chg1_mivr, chg2_mivr);
pd_err("[%s]vbus:%d:%d:%d current:%d idx:%d default_idx:%d\n",
__func__, pd->vbus_h, pd->vbus_l, *newvbus,
*newcur, *newidx, selected_idx);
return 0;
reset:
mtk_pdc_reset(alg);
*newidx = pd->pd_reset_idx;
*newvbus = cap->max_mv[*newidx];
*newcur = cap->ma[*newidx];
return 0;
}
static int pd_sc_set_charger(struct chg_alg_device *alg)
{
struct mtk_pd *pd;
int ichg1_min = -1, aicr1_min = -1;
int ret;
pd = dev_get_drvdata(&alg->dev);
if (pd->input_current_limit1 == 0 ||
pd->charging_current_limit1 == 0) {
pr_notice("input/charging current is 0, end Pd\n");
return -1;
}
mutex_lock(&pd->data_lock);
if (pd->charging_current_limit1 != -1) {
if (pd->charging_current_limit1 <
pd->sc_charger_current)
pd->charging_current1 =
pd->charging_current_limit1;
ret = pd_hal_get_min_charging_current(alg, CHG1, &ichg1_min);
if (ret != -ENOTSUPP &&
pd->charging_current_limit1 < ichg1_min)
pd->charging_current1 = 0;
} else
pd->charging_current1 = pd->sc_charger_current;
if (pd->input_current_limit1 != -1 &&
pd->input_current_limit1 <
pd->sc_input_current) {
pd->input_current1 = pd->input_current_limit1;
ret = pd_hal_get_min_input_current(alg, CHG1, &aicr1_min);
if (ret != -ENOTSUPP &&
pd->input_current_limit1 < aicr1_min)
pd->input_current1 = 0;
} else
pd->input_current1 = pd->sc_input_current;
mutex_unlock(&pd->data_lock);
if (pd->input_current1 == 0 ||
pd->charging_current1 == 0) {
pd_err("current is zero %d %d\n",
pd->input_current1,
pd->charging_current1);
return -1;
}
pd_hal_set_charging_current(alg,
CHG1, pd->charging_current1);
pd_hal_set_input_current(alg,
CHG1, pd->input_current1);
pd_hal_set_cv(alg,
CHG1, pd->cv);
pd_dbg("%s m:%d s:%d cv:%d chg1:%d,%d min:%d:%d\n", __func__,
alg->config,
pd->state,
pd->cv,
pd->input_current1,
pd->charging_current1,
ichg1_min,
aicr1_min);
return 0;
}
static int pd_dcs_set_charger(struct chg_alg_device *alg)
{
struct mtk_pd *pd;
bool chg2_enable = true;
bool chg2_chip_enabled = false;
int ret;
int ichg1_min = -1, ichg2_min = -1;
int aicr1_min = -1;
pd = dev_get_drvdata(&alg->dev);
if (pd->input_current_limit1 == 0 ||
pd->charging_current_limit1 == 0 ||
pd->charging_current_limit2 == 0) {
pr_notice("input/charging current is 0, end PD\n");
return -1;
}
mutex_lock(&pd->data_lock);
if (pd->input_current_limit1 != -1 &&
pd->input_current_limit1 <
pd->dcs_input_current) {
pd->input_current1 = pd->input_current_limit1;
ret = pd_hal_get_min_input_current(alg, CHG1, &aicr1_min);
if (ret != -ENOTSUPP &&
pd->input_current_limit1 < aicr1_min)
pd->input_current1 = 0;
} else
pd->input_current1 = pd->dcs_input_current;
if (pd->charging_current_limit1 != -1 &&
pd->charging_current_limit1 <
pd->dcs_chg1_charger_current) {
pd->charging_current1 = pd->charging_current_limit1;
ret = pd_hal_get_min_charging_current(alg, CHG1, &ichg1_min);
if (ret != -ENOTSUPP &&
pd->charging_current_limit1 < ichg1_min)
pd->charging_current1 = 0;
} else
pd->charging_current1 = pd->dcs_chg1_charger_current;
if (pd->state == PD_RUN)
pd->charging_current2 = pd->dcs_chg2_charger_current;
if (pd->charging_current_limit2 != -1 &&
pd->charging_current_limit2 <
pd->charging_current2) {
pd->charging_current2 = pd->charging_current_limit2;
ret = pd_hal_get_min_charging_current(alg, CHG2, &ichg2_min);
if (ret != -ENOTSUPP &&
pd->charging_current_limit2 < ichg2_min)
pd->charging_current2 = 0;
}
mutex_unlock(&pd->data_lock);
if (pd->input_current1 == 0 ||
pd->charging_current1 == 0 ||
pd->charging_current2 == 0) {
pd_err("current is zero %d %d %d\n",
pd->input_current1,
pd->charging_current1,
pd->charging_current2);
pd_hal_enable_charger(alg, CHG2, false);
pd_hal_charger_enable_chip(alg, CHG2, false);
return -1;
}
chg2_chip_enabled = pd_hal_is_chip_enable(alg, CHG2);
pd_err("chg2_en:%d %d %d\n",
chg2_enable, chg2_chip_enabled, pd->state);
if (pd->state == PD_RUN) {
if (!chg2_chip_enabled)
pd_hal_charger_enable_chip(alg, CHG2, true);
pd_hal_enable_charger(alg, CHG2, true);
pd_hal_set_input_current(alg,
CHG2, pd->charging_current2);
pd_hal_set_charging_current(alg,
CHG2, pd->charging_current2);
pd_hal_set_eoc_current(alg, CHG1,
pd->dual_polling_ieoc);
pd_hal_enable_termination(alg, CHG1, false);
pd_hal_safety_check(alg, pd->dual_polling_ieoc);
} else if (pd->state == PD_TUNING) {
if (!chg2_chip_enabled)
pd_hal_charger_enable_chip(alg, CHG2, true);
pd_hal_enable_charger(alg, CHG2, true);
pd_hal_set_eoc_current(alg, CHG1, pd->dual_polling_ieoc);
pd_hal_enable_termination(alg, CHG1, false);
pd_hal_safety_check(alg, pd->dual_polling_ieoc);
} else if (pd->state == PD_POSTCC) {
pd_hal_set_eoc_current(alg, CHG1, 150000);
pd_hal_enable_termination(alg, CHG1, true);
} else {
pd_err("%s state error!", __func__);
return -1;
}
pd_hal_set_charging_current(alg,
CHG1, pd->charging_current1);
pd_hal_set_input_current(alg,
CHG1, pd->input_current1);
pd_hal_set_cv(alg,
CHG1, pd->cv);
pd_dbg("%s m:%d s:%d cv:%d chg1:%d,%d chg2:%d,%d chg2en:%d min:%d,%d,%d\n",
__func__,
alg->config,
pd->state,
pd->cv,
pd->input_current1,
pd->charging_current1,
pd->input_current2,
pd->charging_current2,
chg2_enable,
ichg1_min,
ichg2_min,
aicr1_min);
return 0;
}
static int __pd_run(struct chg_alg_device *alg)
{
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
int vbus, cur, idx, ret, ret_value = ALG_RUNNING;
ret = __mtk_pdc_get_setting(alg, &vbus, &cur, &idx);
if (ret != -1 && idx != -1) {
if ((pd->input_current_limit1 != -1 &&
pd->input_current_limit1 < cur * 1000) == false)
pd->input_current_limit1 = cur * 1000;
__mtk_pdc_setup(alg, idx);
} else {
pd->input_current_limit1 =
PD_FAIL_CURRENT;
pd->charging_current_limit1 =
PD_FAIL_CURRENT;
}
if (alg->config == DUAL_CHARGERS_IN_SERIES) {
if (pd_dcs_set_charger(alg) != 0) {
ret_value = ALG_DONE;
//goto out;
}
} else {
if (pd_sc_set_charger(alg) != 0) {
ret_value = ALG_DONE;
//goto out;
}
}
return ret_value;
}
static int _pd_start_algo(struct chg_alg_device *alg)
{
int ret_value = 0;
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
bool again = false;
int uisoc;
mutex_lock(&pd->access_lock);
do {
pd_info("%s state:%d %s %d\n", __func__,
pd->state,
pd_state_to_str(pd->state),
again);
again = false;
switch (pd->state) {
case PD_HW_UNINIT:
case PD_HW_FAIL:
ret_value = ALG_INIT_FAIL;
break;
case PD_HW_READY:
ret_value = pd_hal_is_pd_adapter_ready(alg);
if (ret_value == ALG_TA_NOT_SUPPORT)
pd->state = PD_TA_NOT_SUPPORT;
else if (ret_value == ALG_READY) {
uisoc = pd_hal_get_uisoc(alg);
if (pd->input_current_limit1 != -1 ||
pd->charging_current_limit1 != -1 ||
pd->input_current_limit2 != -1 ||
pd->charging_current_limit2 != -1 ||
uisoc >= pd->pd_stop_battery_soc)
ret_value = ALG_NOT_READY;
else {
pd->state = PD_RUN;
again = true;
}
}
break;
case PD_TA_NOT_SUPPORT:
ret_value = ALG_TA_NOT_SUPPORT;
break;
case PD_RUN:
case PD_TUNING:
case PD_POSTCC:
ret_value = __pd_run(alg);
break;
default:
pd_err("PD unknown state:%d\n", pd->state);
ret_value = ALG_INIT_FAIL;
break;
}
} while (again == true);
mutex_unlock(&pd->access_lock);
return ret_value;
}
static bool _pd_is_algo_running(struct chg_alg_device *alg)
{
struct mtk_pd *pd;
pd_dbg("%s\n", __func__);
pd = dev_get_drvdata(&alg->dev);
if (pd->state == PD_RUN || pd->state == PD_TUNING
|| pd->state == PD_POSTCC)
return true;
return false;
}
static int _pd_stop_algo(struct chg_alg_device *alg)
{
int ret_value = 0;
struct mtk_pd *pd = dev_get_drvdata(&alg->dev);
mutex_lock(&pd->access_lock);
pd_info("%s state:%d %s\n", __func__,
pd->state,
pd_state_to_str(pd->state));
switch (pd->state) {
case PD_HW_UNINIT:
case PD_HW_FAIL:
case PD_HW_READY:
case PD_TA_NOT_SUPPORT:
break;
case PD_TUNING:
case PD_POSTCC:
case PD_RUN:
mtk_pdc_reset(alg);
pd_hal_set_charging_current(alg,
CHG1, PD_FAIL_CURRENT);
pd_hal_set_input_current(alg,
CHG1, PD_FAIL_CURRENT);
pd_hal_set_cv(alg,
CHG1, pd->cv);
pd->state = PD_HW_READY;
if (alg->config == DUAL_CHARGERS_IN_SERIES) {
pd_hal_enable_charger(alg, CHG2, false);
pd_hal_charger_enable_chip(alg,
CHG2, false);
}
break;
default:
pd_err("PD unknown state:%d\n", pd->state);
ret_value = ALG_INIT_FAIL;
break;
}
mutex_unlock(&pd->access_lock);
return ret_value;
}
static int pd_full_evt(struct chg_alg_device *alg)
{
struct mtk_pd *pd;
int ret = 0;
bool chg_en = true, chg2_enabled = false;
int ichg2 = 0, ichg2_min = 100000;
int ret_value = 0;
pd = dev_get_drvdata(&alg->dev);
switch (pd->state) {
case PD_HW_UNINIT:
case PD_HW_FAIL:
case PD_HW_READY:
case PD_TA_NOT_SUPPORT:
break;
case PD_TUNING:
case PD_POSTCC:
case PD_RUN:
if (alg->config == DUAL_CHARGERS_IN_SERIES) {
pd_hal_is_charger_enable(
alg, CHG2, &chg_en);
chg2_enabled = pd_hal_is_chip_enable(alg, CHG2);
if (!chg_en || !chg2_enabled) {
/* notify eoc , fix me */
pd->state = PD_HW_READY;
pd_err("%s: charging done:%d %d\n",
__func__, chg_en, chg2_enabled);
if (alg->is_polling_mode == false)
ret_value = 1;
} else {
pd_hal_get_charging_current(alg, CHG2, &ichg2);
ret = pd_hal_get_min_charging_current(
alg, CHG2, &ichg2_min);
if (ret == -ENOTSUPP)
ichg2_min = 100000;
pd_err("ichg2:%d, ichg2_min:%d state:%d\n",
ichg2, ichg2_min, pd->state);
if (ichg2 - 500000 <= ichg2_min) {
pd->state = PD_POSTCC;
pd_hal_enable_charger(alg,
CHG2, false);
pd_hal_set_eoc_current(alg,
CHG1, 150000);
pd_hal_enable_termination(alg,
CHG1, true);
} else {
pd->state = PD_TUNING;
mutex_lock(&pd->data_lock);
if (pd->charging_current2 >= 500000)
pd->charging_current2 =
ichg2 - 500000;
pd_hal_set_charging_current(alg,
CHG2, pd->charging_current2);
mutex_unlock(&pd->data_lock);
}
ret_value = 1;
}
} else {
if (pd->state == PD_RUN) {
pd_err("%s evt full\n", __func__);
pd->state = PD_HW_READY;
}
}
break;
default:
pd_err("PD unknown state:%d\n", pd->state);
ret_value = ALG_INIT_FAIL;
break;
}
return ret_value;
}
static int pd_plugout_reset(struct chg_alg_device *alg)
{
struct mtk_pd *pd;
pd = dev_get_drvdata(&alg->dev);
switch (pd->state) {
case PD_HW_UNINIT:
case PD_HW_FAIL:
case PD_HW_READY:
break;
case PD_TA_NOT_SUPPORT:
pd->state = PD_HW_READY;
break;
case PD_TUNING:
case PD_POSTCC:
case PD_RUN:
pd->state = PD_HW_READY;
if (alg->config == DUAL_CHARGERS_IN_SERIES) {
pd_hal_enable_charger(alg, CHG2, false);
pd_hal_charger_enable_chip(alg,
CHG2, false);
}
pd->pd_cap_max_watt = -1;
pd->pd_idx = -1;
pd->pd_reset_idx = -1;
pd->pd_boost_idx = 0;
pd->pd_buck_idx = 0;
break;
default:
pd_err("PD unknown state:%d\n", pd->state);
break;
}
return 0;
}
static int _pd_notifier_call(struct chg_alg_device *alg,
struct chg_alg_notify *notify)
{
struct mtk_pd *pd;
int ret_value = 0;
pd = dev_get_drvdata(&alg->dev);
pd_err("%s evt:%d state:%s\n", __func__, notify->evt,
pd_state_to_str(pd->state));
switch (notify->evt) {
case EVT_PLUG_OUT:
ret_value = pd_plugout_reset(alg);
break;
case EVT_FULL:
ret_value = pd_full_evt(alg);
break;
default:
ret_value = -EINVAL;
}
return ret_value;
}
static void mtk_pd_parse_dt(struct mtk_pd *pd,
struct device *dev)
{
struct device_node *np = dev->of_node;
u32 val;
val = 0;
if (of_property_read_u32(np, "min_charger_voltage", &val) >= 0)
pd->min_charger_voltage = val;
else {
pd_err("use default V_CHARGER_MIN:%d\n", V_CHARGER_MIN);
pd->min_charger_voltage = V_CHARGER_MIN;
}
/* PD */
val = 0;
if (of_property_read_u32(np, "pd_vbus_upper_bound", &val) >= 0) {
pd->vbus_h = val / 1000;
} else {
pd_err("use default pd_vbus_upper_bound:%d\n",
PD_VBUS_UPPER_BOUND);
pd->vbus_h = PD_VBUS_UPPER_BOUND / 1000;
}
if (of_property_read_u32(np, "pd_vbus_low_bound", &val) >= 0) {
pd->vbus_l = val / 1000;
} else {
pd_err("use default pd_vbus_low_bound:%d\n",
PD_VBUS_LOW_BOUND);
pd->vbus_l = PD_VBUS_LOW_BOUND / 1000;
}
if (of_property_read_u32(np, "vsys_watt", &val) >= 0) {
pd->vsys_watt = val;
} else {
pd_err("use default vsys_watt:%d\n",
VSYS_WATT);
pd->vsys_watt = VSYS_WATT;
}
if (of_property_read_u32(np, "ibus_err", &val) >= 0) {
pd->ibus_err = val;
} else {
pd_err("use default ibus_err:%d\n",
IBUS_ERR);
pd->ibus_err = IBUS_ERR;
}
if (of_property_read_u32(np, "pd_stop_battery_soc", &val) >= 0)
pd->pd_stop_battery_soc = val;
else {
pd_err("use default pd_stop_battery_soc:%d\n",
PD_STOP_BATTERY_SOC);
pd->pd_stop_battery_soc = PD_STOP_BATTERY_SOC;
}
/* single charger */
if (of_property_read_u32(np, "sc_input_current", &val) >= 0) {
pd->sc_input_current = val;
} else {
pd_err("use default sc_input_current:%d\n",
PD_SC_INPUT_CURRENT);
pd->sc_input_current = PD_SC_INPUT_CURRENT;
}
if (of_property_read_u32(np, "sc_charger_current", &val) >= 0) {
pd->sc_charger_current = val;
} else {
pd_err("use default sc_charger_current:%d\n",
PD_SC_CHARGER_CURRENT);
pd->sc_charger_current = PD_SC_CHARGER_CURRENT;
}
/* dual charger in series*/
if (of_property_read_u32(np, "dcs_input_current", &val) >= 0) {
pd->dcs_input_current = val;
} else {
pd_err("use default dcs_input_current:%d\n",
PD_DCS_INPUT_CURRENT);
pd->dcs_input_current = PD_DCS_INPUT_CURRENT;
}
if (of_property_read_u32(np, "dcs_chg1_charger_current", &val) >= 0) {
pd->dcs_chg1_charger_current = val;
} else {
pd_err("use default dcs_chg1_charger_current:%d\n",
PD_DCS_CHG1_CHARGER_CURRENT);
pd->dcs_chg1_charger_current = PD_DCS_CHG1_CHARGER_CURRENT;
}
if (of_property_read_u32(np, "dcs_chg2_charger_current", &val) >= 0) {
pd->dcs_chg2_charger_current = val;
} else {
pd_err("use default dcs_chg2_charger_current:%d\n",
PD_DCS_CHG2_CHARGER_CURRENT);
pd->dcs_chg2_charger_current = PD_DCS_CHG2_CHARGER_CURRENT;
}
/* dual charger */
if (of_property_read_u32(np, "slave_mivr_diff", &val) >= 0)
pd->slave_mivr_diff = val;
else {
pd_err("use default SLAVE_MIVR_DIFF:%d\n", SLAVE_MIVR_DIFF);
pd->slave_mivr_diff = SLAVE_MIVR_DIFF;
}
if (of_property_read_u32(np, "dual_polling_ieoc", &val) >= 0)
pd->dual_polling_ieoc = val;
else {
pd_err("use default dual_polling_ieoc :%d\n", 750000);
pd->dual_polling_ieoc = 750000;
}
}
int _pd_get_prop(struct chg_alg_device *alg,
enum chg_alg_props s, int *value)
{
pr_notice("%s\n", __func__);
if (s == ALG_MAX_VBUS)
*value = 10000;
else
pr_notice("%s does not support prop:%d\n", __func__, s);
return 0;
}
int _pd_set_setting(struct chg_alg_device *alg_dev,
struct chg_limit_setting *setting)
{
struct mtk_pd *pd;
pd_dbg("%s cv:%d icl:%d,%d cc:%d,%d\n",
__func__,
setting->cv,
setting->input_current_limit1,
setting->input_current_limit2,
setting->charging_current_limit1,
setting->charging_current_limit2);
pd = dev_get_drvdata(&alg_dev->dev);
mutex_lock(&pd->access_lock);
pd->cv = setting->cv;
pd->input_current_limit1 = setting->input_current_limit1;
pd->charging_current_limit1 = setting->charging_current_limit1;
pd->input_current_limit2 = setting->input_current_limit2;
pd->charging_current_limit2 = setting->charging_current_limit2;
mutex_unlock(&pd->access_lock);
return 0;
}
int _pd_set_prop(struct chg_alg_device *alg,
enum chg_alg_props s, int value)
{
pr_notice("%s %d %d\n", __func__, s, value);
return 0;
}
static struct chg_alg_ops pd_alg_ops = {
.init_algo = _pd_init_algo,
.is_algo_ready = _pd_is_algo_ready,
.start_algo = _pd_start_algo,
.is_algo_running = _pd_is_algo_running,
.stop_algo = _pd_stop_algo,
.notifier_call = _pd_notifier_call,
.get_prop = _pd_get_prop,
.set_prop = _pd_set_prop,
.set_current_limit = _pd_set_setting,
};
static int mtk_pd_probe(struct platform_device *pdev)
{
struct mtk_pd *pd = NULL;
pr_notice("%s: starts\n", __func__);
pd = devm_kzalloc(&pdev->dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return -ENOMEM;
platform_set_drvdata(pdev, pd);
pd->pdev = pdev;
mutex_init(&pd->access_lock);
mutex_init(&pd->data_lock);
mtk_pd_parse_dt(pd, &pdev->dev);
pd->bat_psy = devm_power_supply_get_by_phandle(&pdev->dev, "gauge");
if (IS_ERR_OR_NULL(pd->bat_psy))
pd_err("%s: devm power fail to get bat_psy\n", __func__);
pd->alg = chg_alg_device_register("pd", &pdev->dev,
pd, &pd_alg_ops, NULL);
return 0;
}
static int mtk_pd_remove(struct platform_device *dev)
{
return 0;
}
static void mtk_pd_shutdown(struct platform_device *dev)
{
}
static const struct of_device_id mtk_pd_of_match[] = {
{.compatible = "mediatek,charger,pd",},
{},
};
MODULE_DEVICE_TABLE(of, mtk_pd_of_match);
struct platform_device pd_device = {
.name = "pd",
.id = -1,
};
static struct platform_driver pd_driver = {
.probe = mtk_pd_probe,
.remove = mtk_pd_remove,
.shutdown = mtk_pd_shutdown,
.driver = {
.name = "pd",
.of_match_table = mtk_pd_of_match,
},
};
static int __init mtk_pd_init(void)
{
return platform_driver_register(&pd_driver);
}
late_initcall(mtk_pd_init);
static void __exit mtk_pd_exit(void)
{
platform_driver_unregister(&pd_driver);
}
module_exit(mtk_pd_exit);
MODULE_AUTHOR("wy.chuang <wy.chuang@mediatek.com>");
MODULE_DESCRIPTION("MTK PD algorithm Driver");
MODULE_LICENSE("GPL");
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