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android_kernel_samsung_msm8976/drivers/extcon/extcon-max77843.c

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/*
* max77843-muic.c - MUIC driver for the Maxim 77843
*
* Copyright (C) 2012 Samsung Electronics.
* <sukdong.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>
#include <linux/input.h>
#include <linux/mfd/max77843.h>
#include <linux/mfd/max77843-private.h>
#include <linux/wakelock.h>
#include <linux/switch.h>
#if defined(CONFIG_USBHUB_USB3803)
#include <linux/usb3803.h>
#endif
#include <linux/delay.h>
#include <linux/extcon.h>
#define DEV_NAME "max77843-muic"
#define POLLING_TIME 1000
#define ESCAPE_COUNTER 10
/* for lpm mode check */
//extern int poweroff_charging;
static int poweroff_charging = 0;
extern int system_rev;
/* for providing API */
static struct max77843_muic_info *gInfo;
/* MAX77843 MUIC CHG_TYP setting values */
enum {
/* No Valid voltage at VB (Vvb < Vvbdet) */
CHGTYP_NO_VOLTAGE = 0x00,
/* Unknown (D+/D- does not present a valid USB charger signature) */
CHGTYP_USB = 0x01,
/* Charging Downstream Port */
CHGTYP_DOWNSTREAM_PORT = 0x02,
/* Dedicated Charger (D+/D- shorted) */
CHGTYP_DEDICATED_CHGR = 0x03,
/* Special 500mA charger, max current 500mA */
CHGTYP_500MA = 0x04,
/* Special 1A charger, max current 1A */
CHGTYP_1A = 0x05,
/* Reserved for Future Use */
CHGTYP_RFU = 0x06,
/* Dead Battery Charging, max current 100mA */
CHGTYP_DB_100MA = 0x07,
CHGTYP_MAX,
CHGTYP_INIT,
CHGTYP_MIN = CHGTYP_NO_VOLTAGE
};
#define CHGTYP (CHGTYP_USB | CHGTYP_DOWNSTREAM_PORT |\
CHGTYP_DEDICATED_CHGR | CHGTYP_500MA | CHGTYP_1A)
enum {
ADC_GND = 0x00,
ADC_MHL = 0x01,
ADC_INCOMPATIBLE1_CHG = 0x08, /* 0x01000 10.0K ohm*/
ADC_VZW_USB_DOCK = 0x0e, /* 0x01110 28.7K ohm VZW Dock */
ADC_SMARTDOCK = 0x10, /* 0x10000 40.2K ohm */
#if defined(CONFIG_MUIC_SUPPORT_HMT_DETECTION)
ADC_HMT = 0x11, /* 0x10001 49.9K ohm */
#else
ADC_INCOMPATIBLE2_CHG = 0x11, /* 0x10001 49.9K ohm */
#endif
ADC_AUDIODOCK = 0x12, /* 0x10010 64.9K ohm */
ADC_CHARGING_CABLE = 0x14, /* 0x10100 102K ohm */
ADC_CEA936ATYPE1_CHG = 0x17, /* 0x10111 200K ohm */
ADC_JIG_USB_OFF = 0x18, /* 0x11000 255K ohm */
ADC_JIG_USB_ON = 0x19, /* 0x11001 301K ohm */
ADC_DESKDOCK = 0x1a, /* 0x11010 365K ohm */
ADC_CEA936ATYPE2_CHG = 0x1b, /* 0x11011 442K ohm */
ADC_JIG_UART_OFF = 0x1c, /* 0x11100 523K ohm */
ADC_JIG_UART_ON = 0x1d, /* 0x11101 619K ohm */
ADC_CARDOCK = 0x1d, /* 0x11101 619K ohm */
ADC_OPEN = 0x1f
};
struct max77843_muic_info {
struct device *dev;
struct max77843_dev *max77843;
struct i2c_client *muic;
struct max77843_muic_data *muic_data;
struct extcon_dev *edev;
int irq_adc;
int irq_vbvolt;
int irq_chgtype;
int irq_vdnmon;
int irq_mrxrdy;
int mansw;
int path;
int otg_test;
u8 adc_mode;
u8 tx_data;
bool is_check_hv;
struct wake_lock muic_wake_lock;
enum extcon_cable_name cable_name;
struct delayed_work init_work;
struct mutex mutex;
#if !defined(CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK)
bool is_factory_start;
#endif /* !CONFIG_MUIC_MAX77843_SUPORT_CAR_DOCK */
u8 adc;
u8 chgtyp;
u8 vbvolt;
bool is_adc_open_prev;
};
static const char const *max77843_path_name[] = {
[MAX77843_PATH_OPEN] = "OPEN",
[MAX77843_PATH_USB_AP] = "USB-AP",
[MAX77843_PATH_AUDIO] = "AUDIO",
[MAX77843_PATH_UART_AP] = "UART-AP",
[MAX77843_PATH_USB_AUX] = "USB-AUX",
[MAX77843_PATH_UART_AUX]= "UART-AUX",
NULL,
};
static struct switch_dev switch_uart3 = {
.name = "uart3", /* /sys/class/switch/uart3/state */
};
static int if_muic_info;
static int switch_sel;
static int if_pmic_rev;
static void _detected(struct max77843_muic_info *info, u32 new_state);
void max77843_update_jig_state(struct max77843_muic_info *info);
/* func : get_if_pmic_inifo
* switch_sel value get from bootloader comand line
* switch_sel data consist 8 bits (xxxxzzzz)
* first 4bits(zzzz) mean path infomation.
* next 4bits(xxxx) mean if pmic version info
*/
static int get_if_pmic_inifo(char *str)
{
get_option(&str, &if_muic_info);
switch_sel = if_muic_info & 0x0f;
if_pmic_rev = (if_muic_info & 0xf0) >> 4;
pr_info("%s %s: switch_sel: %x if_pmic_rev:%x\n",
__FILE__, __func__, switch_sel, if_pmic_rev);
return if_muic_info;
}
__setup("pmic_info=", get_if_pmic_inifo);
static int max77843_muic_set_comp2_comn1_pass2
(struct max77843_muic_info *info, int type, int path)
{
/* type 0 == usb, type 1 == uart */
u8 cntl1_val, cntl1_msk;
int ret = 0;
int val;
dev_info(info->dev, "func: %s type: %d path: %d\n",
__func__, type, path);
if (type == 0) {
if (path == MAX77843_PATH_USB_AP) {
info->muic_data->usb_sel = MAX77843_PATH_USB_AP;
val = MAX77843_MUIC_CTRL1_BIN_1_001;
} else if (path == MAX77843_PATH_USB_AUX) {
info->muic_data->usb_sel = MAX77843_PATH_USB_AUX;
val = MAX77843_MUIC_CTRL1_BIN_4_100;
} else {
dev_err(info->dev, "func: %s invalid usb path\n"
, __func__);
return -EINVAL;
}
} else if (type == 1) {
if (path == MAX77843_PATH_UART_AP) {
info->muic_data->uart_sel = MAX77843_PATH_UART_AP;
val = MAX77843_MUIC_CTRL1_BIN_3_011;
} else if (path == MAX77843_PATH_UART_AUX) {
info->muic_data->uart_sel = MAX77843_PATH_UART_AUX;
val = MAX77843_MUIC_CTRL1_BIN_5_101;
} else {
dev_err(info->dev, "func: %s invalid uart path\n"
, __func__);
return -EINVAL;
}
}
else {
dev_err(info->dev, "func: %s invalid path type(%d)\n"
, __func__, type);
return -EINVAL;
}
cntl1_val = (val << MAX77843_CTRL1_COMN1SW_SHIFT) | (val << MAX77843_CTRL1_COMP2SW_SHIFT);
cntl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK;
max77843_update_reg(info->muic, MAX77843_MUIC_REG_CTRL1, cntl1_val,
cntl1_msk);
return ret;
}
static int max77843_muic_set_uart_sel_pass2
(struct max77843_muic_info *info, int path)
{
int ret = 0;
ret = max77843_muic_set_comp2_comn1_pass2(info, 1/*uart*/, path);
return ret;
}
static ssize_t max77843_muic_show_usb_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
dev_info(info->dev, "func:%s info->cable_name:[%s]\n",
__func__, extcon_cable_name[info->cable_name]);
switch (info->cable_name) {
case EXTCON_USB:
case EXTCON_CHARGE_DOWNSTREAM:
case EXTCON_JIG_USBOFF:
case EXTCON_JIG_USBON:
return sprintf(buf, "USB_STATE_CONFIGURED\n");
default:
break;
}
return sprintf(buf, "USB_STATE_NOTCONFIGURED\n");
}
static ssize_t max77843_muic_show_device(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
dev_info(info->dev, "func:%s info->cable_name:[%s]\n",
__func__, extcon_cable_name[info->cable_name]);
switch (info->cable_name) {
case EXTCON_NONE:
return sprintf(buf, "No cable\n");
case EXTCON_USB:
return sprintf(buf, "USB\n");
case EXTCON_CHARGE_DOWNSTREAM:
return sprintf(buf, "Charge Downstream Port\n");
case EXTCON_USB_HOST:
return sprintf(buf, "OTG\n");
case EXTCON_TA:
return sprintf(buf, "TA\n");
case EXTCON_HV_TA:
return sprintf(buf, "HV TA\n");
case EXTCON_DESKDOCK:
return sprintf(buf, "Desk Dock\n");
case EXTCON_DESKDOCK_VB:
return sprintf(buf, "Desk Dock with TA\n");
case EXTCON_SMARTDOCK:
return sprintf(buf, "Smart Dock\n");
case EXTCON_SMARTDOCK_TA:
return sprintf(buf, "Smart Dock with TA\n");
case EXTCON_SMARTDOCK_USB:
return sprintf(buf, "Smart Dock with USB\n");
case EXTCON_AUDIODOCK:
return sprintf(buf, "Audio Dock\n");
case EXTCON_CARDOCK:
return sprintf(buf, "Car Dock\n");
case EXTCON_JIG_UARTOFF:
return sprintf(buf, "JIG UART OFF\n");
case EXTCON_JIG_UARTOFF_VB:
return sprintf(buf, "JIG UART OFF/VB\n");
case EXTCON_JIG_UARTON:
return sprintf(buf, "JIG UART ON\n");
case EXTCON_JIG_USBOFF:
return sprintf(buf, "JIG USB OFF\n");
case EXTCON_JIG_USBON:
return sprintf(buf, "JIG USB ON\n");
case EXTCON_MHL:
return sprintf(buf, "mHL\n");
case EXTCON_MHL_VB:
return sprintf(buf, "mHL charging\n");
case EXTCON_INCOMPATIBLE:
return sprintf(buf, "Incompatible TA\n");
case EXTCON_CHARGING_CABLE:
return sprintf(buf, "Charging Cable\n");
default:
break;
}
return sprintf(buf, "UNKNOWN\n");
}
static ssize_t max77843_muic_show_manualsw(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
dev_info(info->dev, "func:%s usb_sel:%d\n",
__func__, info->muic_data->usb_sel);/*For debuging*/
switch (info->muic_data->usb_sel) {
case MAX77843_PATH_USB_AP:
return sprintf(buf, "PDA\n");
case MAX77843_PATH_USB_AUX:
return sprintf(buf, "MODEM\n");
case MAX77843_PATH_AUDIO:
return sprintf(buf, "Audio\n");
default:
break;
}
return sprintf(buf, "UNKNOWN\n");
}
static int max77843_muic_set_usb_path(struct max77843_muic_info *info,
int path);
static ssize_t max77843_muic_set_manualsw(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
dev_info(info->dev, "func:%s buf:%s,count:%ld\n", __func__, buf, count);
if (!strncasecmp(buf, "PDA", 3)) {
info->muic_data->usb_sel = MAX77843_PATH_USB_AP;
dev_info(info->dev, "%s: PATH_USB_AP\n", __func__);
} else if (!strncasecmp(buf, "MODEM", 5)) {
info->muic_data->usb_sel = MAX77843_PATH_USB_AUX;
dev_info(info->dev, "%s: PATH_USB_AUX\n", __func__);
max77843_muic_set_usb_path(info, MAX77843_PATH_USB_AUX);
} else
dev_warn(info->dev, "%s: Wrong command\n", __func__);
return count;
}
static ssize_t max77843_muic_show_adc(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
int ret;
u8 val;
ret = max77843_read_reg(info->muic, MAX77843_MUIC_REG_STATUS1, &val);
dev_info(info->dev, "func:%s ret:%d val:%x\n", __func__, ret, val);
if (ret) {
dev_err(info->dev, "%s: fail to read muic reg\n", __func__);
return sprintf(buf, "UNKNOWN\n");
}
return sprintf(buf, "%x\n", (val & MAX77843_STATUS1_ADC_MASK));
}
static ssize_t max77843_muic_show_audio_path(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
int ret;
u8 val;
ret = max77843_read_reg(info->muic, MAX77843_MUIC_REG_CTRL1, &val);
dev_info(info->dev, "func:%s ret:%d val:%x\n", __func__, ret, val);
if (ret) {
dev_err(info->dev, "%s: fail to read muic reg\n", __func__);
return sprintf(buf, "UNKNOWN\n");
}
return sprintf(buf, "%x\n", val);
}
static ssize_t max77843_muic_set_audio_path(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
struct i2c_client *client = info->muic;
u8 cntl1_val, cntl1_msk;
u8 val;
dev_info(info->dev, "func:%s buf:%s\n", __func__, buf);
if (!strncmp(buf, "0", 1))
val = MAX77843_MUIC_CTRL1_BIN_0_000;
else if (!strncmp(buf, "1", 1))
val = MAX77843_MUIC_CTRL1_BIN_2_010;
else {
dev_warn(info->dev, "%s: Wrong command\n", __func__);
return count;
}
cntl1_val = (val << MAX77843_CTRL1_COMN1SW_SHIFT) | (val << MAX77843_CTRL1_COMP2SW_SHIFT) |
(0 << MAX77843_CTRL1_MICEN_SHIFT);
cntl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK | MAX77843_CTRL1_MICEN_MASK;
max77843_update_reg(client, MAX77843_MUIC_REG_CTRL1, cntl1_val,
cntl1_msk);
dev_info(info->dev, "MUIC cntl1_val:%x, cntl1_msk:%x\n", cntl1_val,
cntl1_msk);
cntl1_val = MAX77843_MUIC_CTRL1_BIN_0_000;
max77843_read_reg(client, MAX77843_MUIC_REG_CTRL1, &cntl1_val);
dev_info(info->dev, "%s: CNTL1(0x%02x)\n", __func__, cntl1_val);
return count;
}
static ssize_t max77843_muic_show_otg_test(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
int ret;
u8 val;
ret = max77843_read_reg(info->muic, MAX77843_MUIC_REG_CDETCTRL1, &val);
dev_info(info->dev, "func:%s ret:%d val:%x buf%s\n",
__func__, ret, val, buf);
if (ret) {
dev_err(info->dev, "%s: fail to read muic reg\n", __func__);
return sprintf(buf, "UNKNOWN\n");
}
val &= MAX77843_CDETCTRL1_CHGDETEN_MASK;
return sprintf(buf, "%x\n", val);
}
static ssize_t max77843_muic_set_otg_test(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
struct i2c_client *client = info->muic;
u8 val;
dev_info(info->dev, "func:%s buf:%s\n", __func__, buf);
if (!strncmp(buf, "0", 1))
val = 0;
else if (!strncmp(buf, "1", 1))
val = 1;
else {
dev_warn(info->dev, "%s: Wrong command\n", __func__);
return count;
}
info->otg_test = (val ? false : true);
max77843_update_reg(client, MAX77843_MUIC_REG_CDETCTRL1,
val << MAX77843_CDETCTRL1_CHGDETEN_SHIFT, MAX77843_CDETCTRL1_CHGDETEN_MASK);
val = 0;
max77843_read_reg(client, MAX77843_MUIC_REG_CDETCTRL1, &val);
dev_info(info->dev, "%s: CDETCTRL(0x%02x)\n", __func__, val);
return count;
}
void max77843_muic_set_chgdeten(int enable)
{
struct max77843_muic_info *info = gInfo;
struct i2c_client *client = info->muic;
u8 val = 0;
if (enable) {
val = 1;
} else {
val = 0;
}
max77843_update_reg(client, MAX77843_MUIC_REG_CDETCTRL1,
val << MAX77843_CDETCTRL1_CHGDETEN_SHIFT, MAX77843_CDETCTRL1_CHGDETEN_MASK);
val = 0;
max77843_read_reg(client, MAX77843_MUIC_REG_CDETCTRL1, &val);
dev_info(info->dev, "%s: CDETCTRL(0x%02x)\n", __func__, val);
}
static bool is_muic_check_hv(struct max77843_muic_info *info)
{
return (info->is_check_hv ? true : false);
}
static void max77843_muic_set_check_hv(struct max77843_muic_info *info, bool value)
{
pr_info("%s: mdata->is_check_hv = [%c]->[%c]\n", __func__,
(info->is_check_hv ? 'T' : 'F'),
(value ? 'T' : 'F'));
info->is_check_hv = value;
}
static void max77843_muic_start_check_hv(struct max77843_muic_info *info)
{
struct i2c_client *client = info->muic;
pr_info("%s\n", __func__);
/* set HVCONTROL1 = 0x11
* 0x11 = DPVD_D06 | DPDNVDEN
*/
max77843_write_reg(client, MAX77843_MUIC_REG_HVCTRL1, 0x11);
/* Check HV
* Set ADCMode = 0x00
*/
max77843_update_reg(client, MAX77843_MUIC_REG_CTRL4,
(0 << MAX77843_CTRL4_ADCMODE_SHIFT), MAX77843_CTRL4_ADCMODE_MASK);
/* Set VbusADCEn = 1 */
max77843_update_reg(client, MAX77843_MUIC_REG_HVCTRL1,
(1 << MAX77843_HVCTRL1_VBUSADCEN_SHIFT), MAX77843_HVCTRL1_VBUSADCEN_MASK);
max77843_muic_set_check_hv(info, true);
/* set INTMASK3 = 0x02
* 0x02 = VDNMONM
*/
max77843_write_reg(client, MAX77843_MUIC_REG_INTMASK3, 0x02);
return;
}
static void max77843_muic_set_hv(struct max77843_muic_info *info)
{
struct i2c_client *client = info->muic;
u8 value;
u8 hvctrl1;
u8 status3;
int ret;
dev_info(info->dev, "%s: HV charger is detected.\n", __func__);
/* Read DPDNVdEn bit for check HV Status */
max77843_read_reg(info->muic, MAX77843_MUIC_REG_HVCTRL1, &hvctrl1);
if ((hvctrl1 & 0x01) == 1) {
max77843_read_reg(info->muic, MAX77843_MUIC_REG_STATUS3, &status3);
if ((status3 & 0x10) != 0)
return;
else
pr_info("%s:Valid HV Charger detection\n", __func__);
} else {
return;
}
/* Set values about HV Charging
* HVCTRL1 = 0x20
* HVCTRL2 = 0x06
*/
max77843_write_reg(client, MAX77843_MUIC_REG_HVCTRL1, 0x20);
max77843_write_reg(client, MAX77843_MUIC_REG_HVCTRL2, 0x06);
/* Set INTMASK3 = 0x00 */
max77843_write_reg(client, MAX77843_MUIC_REG_INTMASK3, 0x00);
/* Set TX Data */
dev_info(info->dev, "%s: Write TX DATA 0x%x\n", __func__, gInfo->tx_data);
value = gInfo->tx_data;
max77843_write_reg(client, MAX77843_MUIC_REG_HVTXBYTE, value);
/* Set HVCTRL2 = 0x1B */
max77843_write_reg(client, MAX77843_MUIC_REG_HVCTRL2, 0x1B);
/* Set INTMASK3 = 0x80 for MRxRdy */
ret = max77843_write_reg(client, MAX77843_MUIC_REG_INTMASK3, 0x80);
if(IS_ERR_VALUE(ret))
pr_err("%s: Can't write INTMASK3 : %d\n", __func__, ret);
return;
}
static void max77843_muic_check_handshaking(struct max77843_muic_info *info)
{
struct i2c_client *client = info->muic;
u32 new_state = EXTCON_NONE;
u8 hvtxbyte;
u8 hvrxbyte[16];
u8 selecthvtxbyte = 0;
int i, ret;
u8 value;
max77843_read_reg(client, MAX77843_MUIC_REG_HVTXBYTE, &hvtxbyte);
ret = max77843_bulk_read(client, MAX77843_MUIC_REG_HVRXBYTE1, 16, hvrxbyte);
if(ret) {
dev_err(info->dev, "%s: fail to read muic reg(%d)\n", __func__, ret);
return;
}
pr_info("%s:TXBYTE:0x%x, RXBYTE[0]:0x%x\n", __func__, hvtxbyte, hvrxbyte[0]);
if(hvrxbyte[0] != hvtxbyte)
{
for (i=0;hvrxbyte[i]!=0 && i<16; i++)
{
pr_info("%s:RXBYTE[%d]:0x%x\n", __func__, i, hvrxbyte[i]);
if(((hvrxbyte[i] & 0xF0) == 0x40) && (hvtxbyte > selecthvtxbyte))
selecthvtxbyte = hvrxbyte[i];
}
if (selecthvtxbyte != 0)
max77843_write_reg(client, MAX77843_MUIC_REG_HVTXBYTE, selecthvtxbyte);
else {
new_state = BIT(EXTCON_TA);
gInfo->cable_name = EXTCON_TA;
goto __found_cable;
}
}
/* Set HVCTRL2 = 0x5B
* 0x1B = MPngEnb | MTxEn | MPing | DP06En | HVDIGEn
*/
max77843_write_reg(client, MAX77843_MUIC_REG_HVCTRL2, 0x5B);
msleep_interruptible(400);
/* Read VbADC in STATUS3 reg */
ret = max77843_read_reg(client, MAX77843_MUIC_REG_STATUS3, &value);
if(IS_ERR_VALUE(ret))
{
dev_err(info->dev, "%s: cannot read STATUS3: %d\n", __func__, ret);
return;
}
/* Check VBUS voltage
* STATUS3_VBADC_MASK : 0x0F
*/
if(((value & 0x0F) >= MAX77843_MVBUS_8V_9V) && ((value & 0x0F) <= MAX77843_MVBUS_9V_10V))
{
pr_info("%s: VbADC is right voltage value.\n", __func__);
new_state = BIT(EXTCON_HV_TA);
gInfo->cable_name = EXTCON_HV_TA;
/* Set INTMASK3 = 0x00 */
max77843_write_reg(client, MAX77843_MUIC_REG_INTMASK3, 0x00);
max77843_muic_set_check_hv(info, false);
} else {
pr_info("%s: VbADC is out range of HV voltage value.(%x)\n", __func__, (value&0x0F));
new_state = BIT(EXTCON_TA);
gInfo->cable_name = EXTCON_TA;
}
if (!new_state) {
dev_warn(info->dev, "Fail to get cable type (adc=0x%x)\n", gInfo->adc);
_detected(info, 0);
return;
}
__found_cable:
_detected(info, new_state);
max77843_update_jig_state(info);
}
static u8 max77843_muic_delay_for_vdnmon(struct max77843_muic_info *info)
{
int ret;
u8 status3;
u8 vdnmon;
pr_info("%s: for init_detect\n", __func__);
mdelay(30);
ret = max77843_read_reg(info->muic, MAX77843_MUIC_REG_STATUS3, &status3);
if (ret) {
pr_err("%s: fail to read muic reg(%d)\n", __func__, ret);
return -1;
}
vdnmon = (status3 & MAX77843_STATUS3_VDNMON_MASK);
pr_info("%s: vdnmon rturn %02x\n", __func__, vdnmon);
return vdnmon;
}
#if !defined(CONFIG_ADC_ONESHOT)
static int max77843_muic_set_adcmode(struct max77843_muic_info *info,
int value)
{
int ret;
u8 val;
if (info->adc_mode == value) {
pr_info("%s: same value:%02x\n", __func__, value);
return 1;
}
dev_info(info->dev, "%s: value:%02x\n", __func__, value);
if(!info->muic) {
dev_err(info->dev, "%s: no muic i2c client\n", __func__);
return -EINVAL;
}
val = value << MAX77843_CTRL4_ADCMODE_SHIFT;
dev_info(info->dev, "ADC MODE(0x%02x)\n", val);
ret = max77843_update_reg(info->muic, MAX77843_MUIC_REG_CTRL4, val,
MAX77843_CTRL4_ADCMODE_MASK);
if(ret < 0) {
dev_err(info->dev, "%s: fail to update reg\n", __func__);
return -EINVAL;
}
info->adc_mode = value;
return 0;
}
#endif
static void max77843_muic_set_adcdbset(struct max77843_muic_info *info,
int value)
{
int ret;
u8 val;
dev_info(info->dev, "func:%s value:%x\n", __func__, value);
if (value > 3) {
dev_err(info->dev, "%s: invalid value(%x)\n", __func__, value);
return;
}
if (!info->muic) {
dev_err(info->dev, "%s: no muic i2c client\n", __func__);
return;
}
val = value << MAX77843_CTRL4_ADCDBSET_SHIFT;
dev_info(info->dev, "%s: ADCDBSET(0x%02x)\n", __func__, val);
ret = max77843_update_reg(info->muic, MAX77843_MUIC_REG_CTRL4, val,
MAX77843_CTRL4_ADCDBSET_MASK);
if (ret < 0)
dev_err(info->dev, "%s: fail to update reg\n", __func__);
}
static ssize_t max77843_muic_show_adc_debounce_time(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
int ret;
u8 val;
dev_info(info->dev, "func:%s buf:%s\n", __func__, buf);
if (!info->muic)
return sprintf(buf, "No I2C client\n");
ret = max77843_read_reg(info->muic, MAX77843_MUIC_REG_CTRL4, &val);
if (ret) {
dev_err(info->dev, "%s: fail to read muic reg\n", __func__);
return sprintf(buf, "UNKNOWN\n");
}
val &= MAX77843_CTRL4_ADCDBSET_MASK;
val = val >> MAX77843_CTRL4_ADCDBSET_SHIFT;
dev_info(info->dev, "func:%s val:%x\n", __func__, val);
return sprintf(buf, "%x\n", val);
}
static ssize_t max77843_muic_set_uart_sel(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
dev_info(info->dev, "%s, buf : %s\n",__func__,buf);
if (!strncasecmp(buf, "AP", 2)) {
int ret = max77843_muic_set_uart_sel_pass2
(info, MAX77843_PATH_UART_AP);
if (ret >= 0){
info->muic_data->uart_sel = MAX77843_PATH_UART_AP;
dev_info(info->dev, "UART PATH:%d\n",
info->muic_data->uart_sel);
}else
dev_err(info->dev, "%s: Change(AP) fail!!", __func__);
} else if (!strncasecmp(buf, "CP2", 3)) {
int ret = max77843_muic_set_uart_sel_pass2
(info, MAX77843_PATH_UART_AUX);
if (ret >= 0){
info->muic_data->uart_sel = MAX77843_PATH_UART_AUX;
dev_info(info->dev, "UART PATH:%d\n",
info->muic_data->uart_sel);
}else
dev_err(info->dev, "%s: Change(AUX) fail!!", __func__);
} else {
dev_warn(info->dev, "%s: Wrong command\n", __func__);
}
return count;
}
static ssize_t max77843_muic_show_uart_sel(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
dev_info(info->dev, "func:%s usb_sel:%d\n",
__func__, info->muic_data->uart_sel);/*For debuging*/
switch (info->muic_data->uart_sel) {
case MAX77843_PATH_UART_AP:
return sprintf(buf, "AP\n");
break;
case MAX77843_PATH_UART_AUX:
return sprintf(buf, "CP2\n");
break;
default:
break;
}
return sprintf(buf, "UNKNOWN\n");
}
static ssize_t max77843_muic_show_charger_type(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
u8 adc, status;
int ret;
ret = max77843_read_reg(info->muic, MAX77843_MUIC_REG_STATUS1, &status);
adc = status & MAX77843_STATUS1_ADC_MASK;
/* SYSFS Node : chg_type
* SYSFS State
* 0 : Dedicated Charger
* 1 : Non-Dedicated Charger
* 2 : Cigar Jack
*/
switch (adc){
case ADC_MHL:
case ADC_VZW_USB_DOCK:
case ADC_SMARTDOCK:
case ADC_AUDIODOCK:
case ADC_DESKDOCK:
case ADC_CARDOCK:
case ADC_OPEN:
dev_info(info->dev, "%s: Dedicated Charger State\n", __func__);
return snprintf(buf, 4, "%d\n", 0);
break;
case ADC_CEA936ATYPE1_CHG:
case ADC_INCOMPATIBLE1_CHG:
#if !defined(CONFIG_MUIC_SUPPORT_HMT_DETECTION)
case ADC_INCOMPATIBLE2_CHG:
#endif
dev_info(info->dev, "%s: Undedicated Charger State\n", __func__);
return snprintf(buf, 4, "%d\n", 1);
break;
case ADC_CEA936ATYPE2_CHG:
dev_info(info->dev, "%s: Dedicated Charger State\n", __func__);
return snprintf(buf, 4, "%d\n", 2);
break;
default:
dev_info(info->dev, "%s: Undeclared State\n", __func__);
break;
}
return snprintf(buf, 9, "%s\n", "UNKNOWN");
}
#if !defined(CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK)
static ssize_t max77843_muic_show_apo_factory(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
const char *mode;
/* true: Factory mode, false: not Factory mode */
if (info->is_factory_start)
mode = "FACTORY_MODE";
else
mode = "NOT_FACTORY_MODE";
pr_info("%s:%s apo factory=%s\n", DEV_NAME, __func__, mode);
return sprintf(buf, "%s\n", mode);
}
static ssize_t max77843_muic_set_apo_factory(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
const char *mode;
pr_info("%s:%s buf:%s\n", DEV_NAME, __func__, buf);
/* "FACTORY_START": factory mode */
if (!strncmp(buf, "FACTORY_START", 13)) {
info->is_factory_start = true;
mode = "FACTORY_MODE";
} else {
pr_warn("%s:%s Wrong command\n", DEV_NAME, __func__);
return count;
}
pr_info("%s:%s apo factory=%s\n", DEV_NAME, __func__, mode);
return count;
}
#endif /* !CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK */
#if !defined(CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK)
static DEVICE_ATTR(apo_factory, 0664,
max77843_muic_show_apo_factory,
max77843_muic_set_apo_factory);
#endif /* !CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK */
static DEVICE_ATTR(chg_type, 0664, max77843_muic_show_charger_type, NULL);
static DEVICE_ATTR(uart_sel, 0664, max77843_muic_show_uart_sel,
max77843_muic_set_uart_sel);
static DEVICE_ATTR(usb_state, S_IRUGO, max77843_muic_show_usb_state, NULL);
static DEVICE_ATTR(device, S_IRUGO, max77843_muic_show_device, NULL);
static DEVICE_ATTR(usb_sel, 0664,
max77843_muic_show_manualsw, max77843_muic_set_manualsw);
static DEVICE_ATTR(adc, S_IRUGO, max77843_muic_show_adc, NULL);
static DEVICE_ATTR(audio_path, 0664,
max77843_muic_show_audio_path, max77843_muic_set_audio_path);
static DEVICE_ATTR(otg_test, 0664,
max77843_muic_show_otg_test, max77843_muic_set_otg_test);
static DEVICE_ATTR(adc_debounce_time, 0664,
max77843_muic_show_adc_debounce_time,
NULL);
static struct attribute *max77843_muic_attributes[] = {
&dev_attr_uart_sel.attr,
&dev_attr_usb_state.attr,
&dev_attr_device.attr,
&dev_attr_usb_sel.attr,
&dev_attr_adc.attr,
&dev_attr_audio_path.attr,
&dev_attr_otg_test.attr,
&dev_attr_adc_debounce_time.attr,
&dev_attr_chg_type.attr,
#if !defined(CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK)
&dev_attr_apo_factory.attr,
#endif /* !CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK */
NULL
};
static void max77843_muic_uart_uevent(int state)
{
if (switch_uart3.dev != NULL) {
switch_set_state(&switch_uart3, state);
dev_info(gInfo->dev, "%s: state:%d\n", __func__, state);
}
}
static const struct attribute_group max77843_muic_group = {
.attrs = max77843_muic_attributes,
};
static int max77843_muic_set_usb_path(struct max77843_muic_info *info, int path)
{
struct i2c_client *client = info->muic;
//int ret;
u8 cntl1_val, cntl1_msk;
int val;
dev_info(info->dev, "func:%s path:%d, cable_name:%d\n", __func__, path, info->cable_name);
switch (path) {
case MAX77843_PATH_USB_AP:
dev_info(info->dev, "%s: PATH_USB_AP\n", __func__);
val = MAX77843_MUIC_CTRL1_BIN_1_001;
cntl1_val = (val << MAX77843_CTRL1_COMN1SW_SHIFT) | (val << MAX77843_CTRL1_COMP2SW_SHIFT);
cntl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK;
break;
case MAX77843_PATH_AUDIO:
dev_info(info->dev, "%s: PATH_AUDIO\n", __func__);
/* SL1, SR2 */
cntl1_val = (MAX77843_MUIC_CTRL1_BIN_2_010 << MAX77843_CTRL1_COMN1SW_SHIFT)
| (MAX77843_MUIC_CTRL1_BIN_2_010 << MAX77843_CTRL1_COMP2SW_SHIFT) |
(0 << MAX77843_CTRL1_MICEN_SHIFT);
cntl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK | MAX77843_CTRL1_MICEN_MASK;
break;
case MAX77843_PATH_USB_AUX:
dev_info(info->dev, "%s: PATH_USB_AUX\n", __func__);
val = MAX77843_MUIC_CTRL1_BIN_4_100;
cntl1_val = (val << MAX77843_CTRL1_COMN1SW_SHIFT) | (val << MAX77843_CTRL1_COMP2SW_SHIFT);
cntl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK;
break;
case MAX77843_PATH_OPEN:
dev_info(info->dev, "%s: PATH_OPEN\n", __func__);
val = MAX77843_MUIC_CTRL1_BIN_0_000;
cntl1_val = (val << MAX77843_CTRL1_COMN1SW_SHIFT) | (val << MAX77843_CTRL1_COMP2SW_SHIFT);
cntl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK;
break;
default:
dev_warn(info->dev, "%s: invalid path(%d)\n", __func__, path);
return -EINVAL;
}
dev_info(info->dev, "%s: Set manual path\n", __func__);
if (info->cable_name != EXTCON_CARDOCK)
max77843_update_reg(client, MAX77843_MUIC_REG_CTRL1, cntl1_val,
cntl1_msk);
max77843_update_reg(client, MAX77843_MUIC_REG_CTRL2,
MAX77843_CTRL2_CPEn1_LOWPWD0,
MAX77843_CTRL2_CPEn_MASK | MAX77843_CTRL2_LOWPWD_MASK);
cntl1_val = MAX77843_MUIC_CTRL1_BIN_0_000;
max77843_read_reg(client, MAX77843_MUIC_REG_CTRL1, &cntl1_val);
dev_info(info->dev, "%s: CNTL1(0x%02x)\n", __func__, cntl1_val);
cntl1_val = MAX77843_MUIC_CTRL1_BIN_0_000;
max77843_read_reg(client, MAX77843_MUIC_REG_CTRL2, &cntl1_val);
dev_info(info->dev, "%s: CNTL2(0x%02x)\n", __func__, cntl1_val);
sysfs_notify(&switch_dev->kobj, NULL, "usb_sel");
return 0;
}
#if !defined(CONFIG_EXTCON_MAX77843)
int max77843_muic_get_charging_type(void)
{
if (gInfo)
return gInfo->cable_name;
else
return EXTCON_NONE;
}
#endif
void max77843_muic_send_event(int val)
{
char *envp[2];
if (val == 0)
envp[0] = "USB_CONNECTION=READY";
else
envp[0] = "USB_CONNECTION=DISCONNECTED";
envp[1] = NULL;
dev_info(gInfo->dev, "%s\n", __func__);
kobject_uevent_env(&gInfo->dev->kobj, KOBJ_CHANGE, envp);
}
static int max77843_muic_set_path(struct max77843_muic_info *info, int path)
{
u8 ctrl1_val, ctrl1_msk;
u8 ctrl2_val, ctrl2_msk;
int val;
dev_info(info->dev, "set path to (%d)\n", path);
switch (path) {
case MAX77843_PATH_OPEN:
val = MAX77843_MUIC_CTRL1_BIN_0_000;
break;
case MAX77843_PATH_USB_AP:
val = MAX77843_MUIC_CTRL1_BIN_1_001;
break;
case MAX77843_PATH_AUDIO:
val = MAX77843_MUIC_CTRL1_BIN_2_010;
break;
case MAX77843_PATH_UART_AP:
val = MAX77843_MUIC_CTRL1_BIN_3_011;
break;
case MAX77843_PATH_USB_AUX:
val = MAX77843_MUIC_CTRL1_BIN_4_100;
break;
case MAX77843_PATH_UART_AUX:
val = MAX77843_MUIC_CTRL1_BIN_5_101;
break;
default:
dev_warn(info->dev, "invalid path(%d)\n", path);
return -EINVAL;
}
ctrl1_val = (val << MAX77843_CTRL1_COMN1SW_SHIFT) | (val << MAX77843_CTRL1_COMP2SW_SHIFT);
ctrl1_msk = MAX77843_CTRL1_COMN1SW_MASK | MAX77843_CTRL1_COMP2SW_MASK;
if (path == MAX77843_PATH_AUDIO) {
ctrl1_val |= 0 << MAX77843_CTRL1_MICEN_SHIFT;
ctrl1_msk |= MAX77843_CTRL1_MICEN_MASK;
}
max77843_update_reg(info->muic,
MAX77843_MUIC_REG_CTRL1, ctrl1_val, ctrl1_msk);
ctrl2_val = MAX77843_CTRL2_CPEn1_LOWPWD0;
ctrl2_msk = MAX77843_CTRL2_CPEn_MASK | MAX77843_CTRL2_LOWPWD_MASK;
max77843_update_reg(info->muic,
MAX77843_MUIC_REG_CTRL2, ctrl2_val, ctrl2_msk);
return 0;
}
#if defined(CONFIG_MUIC_SUPPORT_HMT_DETECTION)
#define MAX77843_PATH_FIX_USB_MASK \
(BIT(EXTCON_USB_HOST) | BIT(EXTCON_SMARTDOCK) \
| BIT(EXTCON_AUDIODOCK) | BIT(EXTCON_HMT))
#else
#define MAX77843_PATH_FIX_USB_MASK \
(BIT(EXTCON_USB_HOST) | BIT(EXTCON_SMARTDOCK) | BIT(EXTCON_AUDIODOCK))
#endif
#define MAX77843_PATH_USB_MASK \
(BIT(EXTCON_USB) | BIT(EXTCON_JIG_USBOFF) | BIT(EXTCON_JIG_USBON) | BIT(EXTCON_CHARGE_DOWNSTREAM))
#define MAX77843_PATH_AUDIO_MASK \
(BIT(EXTCON_DESKDOCK) | BIT(EXTCON_CARDOCK))
#define MAX77843_PATH_UART_MASK \
(BIT(EXTCON_JIG_UARTOFF) | BIT(EXTCON_JIG_UARTON) | BIT(EXTCON_USB_HOST_5V))
static int set_muic_path(struct max77843_muic_info *info)
{
u32 state = info->edev->state;
int path;
int ret = 0;
dev_info(info->dev, "%s: current state=0x%x, path=%s\n",
__func__, state, max77843_path_name[info->path]);
if (state & MAX77843_PATH_FIX_USB_MASK)
path = MAX77843_PATH_USB_AP;
else if (state & MAX77843_PATH_USB_MASK) {
/* set path to usb following usb_sel */
if (info->muic_data->usb_sel == MAX77843_PATH_USB_AUX)
path = MAX77843_PATH_USB_AUX;
else
path = MAX77843_PATH_USB_AP;
} else if (state & MAX77843_PATH_UART_MASK) {
/* set path to uart following uart_sel */
if (info->muic_data->uart_sel == MAX77843_PATH_UART_AUX)
path = MAX77843_PATH_UART_AUX;
else
path = MAX77843_PATH_UART_AP;
} else if (state & MAX77843_PATH_AUDIO_MASK)
path = MAX77843_PATH_AUDIO;
else {
dev_info(info->dev, "%s: don't have to set path\n", __func__);
return 0;
}
ret = max77843_muic_set_path(info, path);
if (ret < 0) {
dev_err(info->dev, "fail to set path(%s->%s),stat=%x,ret=%d\n",
max77843_path_name[info->path],
max77843_path_name[path], state, ret);
return ret;
}
dev_info(info->dev, "%s: path: %s -> %s\n", __func__,
max77843_path_name[info->path],
max77843_path_name[path]);
info->path = path;
return 0;
}
static void _detected(struct max77843_muic_info *info, u32 new_state)
{
u32 current_state;
u32 changed_state;
int index;
int attach;
int ret;
current_state = info->edev->state;
changed_state = current_state ^ new_state;
dev_info(info->dev, "state: cur=0x%x, new=0x%x, changed=0x%x\n",
current_state, new_state, changed_state);
for (index = 0; index < SUPPORTED_CABLE_MAX; index++) {
if (!(changed_state & BIT(index)))
continue;
if (new_state & BIT(index))
attach = 1;
else
attach = 0;
ret = extcon_set_cable_state(info->edev,
extcon_cable_name[index], attach);
if (unlikely(ret < 0))
dev_err(info->dev, "fail to notify %s(%d), %d, ret=%d\n",
extcon_cable_name[index], index, attach, ret);
}
#if !defined(CONFIG_ADC_ONESHOT)
/* Set ADC Mode to oneshot */
if (!new_state) {
max77843_muic_set_adcmode(info, MAX77843_ADC_ONESHOT);
}
#endif
set_muic_path(info);
}
static int max77843_muic_handle_attach(struct max77843_muic_info *info,
u8 status1, u8 status2, u8 status3, int irq)
{
u8 adc;
u8 vbvolt;
u8 chgtyp;
u8 chgdetrun;
u8 adc1k;
u8 vdnmon;
u32 pre_state;
u32 new_state;
new_state = 0;
pre_state = info->edev->state;
adc = status1 & MAX77843_STATUS1_ADC_MASK;
adc1k = status1 & MAX77843_STATUS1_ADC1K_MASK;
chgtyp = status2 & MAX77843_STATUS2_CHGTYP_MASK;
vbvolt = status2 & MAX77843_STATUS2_VBVOLT_MASK;
chgdetrun = status2 & MAX77843_STATUS2_CHGDETRUN_MASK;
vdnmon = status3 & MAX77843_STATUS3_VDNMON_MASK;
dev_info(info->dev, "st1:0x%x st2:0x%x, st3:0x%x\n", status1, status2, status3);
dev_info(info->dev,
"adc:0x%x, adc1k:0x%x, chgtyp:0x%x, vbvolt:%d\n",
adc, adc1k, chgtyp, vbvolt);
dev_info(info->dev, "chgdetrun:0x%x, vdnmon:0x%x, prev state:0x%x\n",
chgdetrun, vdnmon, pre_state);
/* Workaround for Factory mode in MUIC PASS2.
* Abandon adc interrupt of approximately +-100K range
* if previous cable status was JIG UART BOOT OFF.
* In uart path cp, adc is unstable state
* MUIC PASS2 turn to AP_UART mode automatically
* So, in this state set correct path manually.
*/
#if 0
if (info->max77843->pmic_rev > MAX77843_REV_PASS1) {
if ((pre_state & BIT(EXTCON_JIG_UARTOFF)) &&
((adc == ADC_JIG_UART_OFF + 1 ||
(adc == ADC_JIG_UART_OFF - 1))) &&
(info->muic_data->uart_sel == PATH_UART_AUX)) {
dev_warn(info->dev, "abandon ADC\n");
new_state = BIT(EXTCON_JIG_UARTOFF);
gInfo->cable_name = EXTCON_JIG_UARTOFF;
goto __found_cable;
}
}
#endif
/* 1Kohm ID regiter detection (mHL)
* Old MUIC : ADC value:0x00 or 0x01, ADCLow:1
* New MUIC : ADC value is not set(Open), ADCLow:1, ADCError:1
*/
if (adc1k) {
new_state = BIT(EXTCON_MHL);
gInfo->cable_name = EXTCON_MHL;
/* If is_otg_boost is true,
* it means that vbolt is from the device to accessory.
*/
if (vbvolt) {
new_state |= BIT(EXTCON_MHL_VB);
gInfo->cable_name = EXTCON_MHL_VB;
}
goto __found_cable;
}
switch (adc) {
case ADC_GND:
new_state = BIT(EXTCON_USB_HOST);
gInfo->cable_name = EXTCON_USB_HOST;
break;
#if defined(CONFIG_MUIC_SUPPORT_SMART_DOCK)
case ADC_SMARTDOCK:
#if !defined(CONFIG_ADC_ONESHOT)
/* Set ADC Mode to Always */
if (!max77843_muic_set_adcmode(info, MAX77843_ADC_ALWAYS))
msleep(50);
#endif
new_state = BIT(EXTCON_SMARTDOCK);
gInfo->cable_name = EXTCON_SMARTDOCK;
if (chgtyp == CHGTYP_DEDICATED_CHGR) {
new_state |= BIT(EXTCON_SMARTDOCK_TA);
gInfo->cable_name = EXTCON_SMARTDOCK_TA;
} else if (chgtyp == CHGTYP_USB) {
new_state |= BIT(EXTCON_SMARTDOCK_USB);
gInfo->cable_name = EXTCON_SMARTDOCK_USB;
}
break;
#endif
#if defined(CONFIG_MUIC_SUPPORT_HMT_DETECTION)
case ADC_HMT:
#if !defined(CONFIG_ADC_ONESHOT)
/* Set ADC Mode to Always */
if (!max77843_muic_set_adcmode(info, MAX77843_ADC_ALWAYS))
msleep(50);
#endif
new_state = BIT(EXTCON_HMT);
new_state |= BIT(EXTCON_USB_HOST);
gInfo->cable_name = EXTCON_HMT;
break;
#endif
case ADC_JIG_UART_OFF:
new_state = BIT(EXTCON_JIG_UARTOFF);
gInfo->cable_name = EXTCON_JIG_UARTOFF;
if (vbvolt) {
if (gInfo->otg_test) {/* add for DFMS */
new_state |= BIT(EXTCON_USB_HOST_5V);
gInfo->cable_name = EXTCON_USB_HOST_5V;
} else {
new_state |= BIT(EXTCON_JIG_UARTOFF_VB);
gInfo->cable_name = EXTCON_JIG_UARTOFF_VB;
}
}
break;
case ADC_CARDOCK: /* ADC_CARDOCK == ADC_JIG_UART_ON */
#if defined(CONFIG_SEC_FACTORY)
new_state = BIT(EXTCON_CARDOCK);
gInfo->cable_name = EXTCON_CARDOCK;
#else
new_state = BIT(EXTCON_JIG_UARTON);
gInfo->cable_name = EXTCON_JIG_UARTON;
#endif
if (vbvolt) {
new_state |= BIT(EXTCON_CARDOCK_VB);
gInfo->cable_name = EXTCON_CARDOCK_VB;
}
break;
case ADC_JIG_USB_OFF:
if (vbvolt) {
new_state = BIT(EXTCON_JIG_USBOFF);
info->cable_name = EXTCON_JIG_USBOFF;
}
break;
case ADC_JIG_USB_ON:
if (vbvolt) {
new_state = BIT(EXTCON_JIG_USBON);
info->cable_name = EXTCON_JIG_USBON;
}
break;
#if defined(CONFIG_MUIC_SUPPORT_DESK_DOCK)
case ADC_DESKDOCK:
new_state = BIT(EXTCON_DESKDOCK);
gInfo->cable_name = EXTCON_DESKDOCK;
if (vbvolt) {
new_state |= BIT(EXTCON_DESKDOCK_VB);
gInfo->cable_name = EXTCON_DESKDOCK_VB;
}
break;
#endif
#if defined(CONFIG_MUIC_SUPPORT_AUDIO_DOCK)
case ADC_AUDIODOCK:
new_state = BIT(EXTCON_AUDIODOCK);
gInfo->cable_name = EXTCON_AUDIODOCK;
break;
#endif
case ADC_CHARGING_CABLE:
new_state = BIT(EXTCON_CHARGING_CABLE);
gInfo->cable_name = EXTCON_CHARGING_CABLE;
break;
case ADC_CEA936ATYPE1_CHG:
case ADC_CEA936ATYPE2_CHG:
case ADC_OPEN:
switch (chgtyp) {
case CHGTYP_USB:
case CHGTYP_DOWNSTREAM_PORT:
if (adc == ADC_CEA936ATYPE2_CHG){
new_state = BIT(EXTCON_CEA936_CHG);
gInfo->cable_name = EXTCON_CEA936_CHG;
} else {
if (chgtyp == CHGTYP_DOWNSTREAM_PORT) {
new_state = BIT(EXTCON_CHARGE_DOWNSTREAM);
info->cable_name = EXTCON_CHARGE_DOWNSTREAM;
} else {
new_state = BIT(EXTCON_USB);
info->cable_name = EXTCON_USB;
}
}
break;
case CHGTYP_DEDICATED_CHGR:
case CHGTYP_500MA:
case CHGTYP_1A:
dev_info(info->dev, "%s:TA\n", __func__);
if ((!is_muic_check_hv(info) && chgtyp == CHGTYP_DEDICATED_CHGR)
&& irq != -1)
max77843_muic_start_check_hv(info);
else if ((is_muic_check_hv(info) && chgtyp == CHGTYP_DEDICATED_CHGR)
|| irq == -1 || poweroff_charging) {
/* WA code for initial detection for HV Charging connection
* - HV Charger is attached device when booting time,
* device is not recognize for that vdnmon timing issue.
* this WA is input delay for recoganize vdnmon signal properly.
* Input delay time when first detection(No IRQ => irq == -1)
*/
if(irq == -1)
max77843_muic_delay_for_vdnmon(info);
if(poweroff_charging) {
max77843_muic_start_check_hv(info);
max77843_muic_set_hv(info);
}
}
new_state = BIT(EXTCON_TA);
gInfo->cable_name = EXTCON_TA;
break;
default:
break;
}
break;
default:
#if defined(CONFIG_MUIC_SUPPORT_INCOMPATIBLE_CHARGER)
if (vbvolt) {
dev_warn(info->dev, "Incompatible adc=0x%x\n", adc);
new_state = BIT(EXTCON_INCOMPATIBLE);
gInfo->cable_name = EXTCON_INCOMPATIBLE;
} else
#endif
{
if (poweroff_charging && vbvolt) {
dev_warn(info->dev, "Incompatible adc=0x%x\n", adc);
new_state = BIT(EXTCON_INCOMPATIBLE);
} else {
dev_warn(info->dev, "unsupported adc=0x%x\n", adc);
}
}
break;
}
if (!new_state) {
dev_warn(info->dev, "Fail to get cable type (adc=0x%x)\n", adc);
_detected(info, 0);
return -1;
}
__found_cable:
_detected(info, new_state);
max77843_update_jig_state(info);
return 0;
}
static int max77843_muic_handle_detach(struct max77843_muic_info *info)
{
u8 ctrl2_val;
dev_info(info->dev, "adc: 0x%x, chgtyp: 0x%x, vbvolt:%d lastcable:%s\n",
info->adc, info->chgtyp,
info->vbvolt, extcon_cable_name[info->cable_name]);
info->cable_name = EXTCON_NONE;
if (info->is_check_hv)
max77843_muic_set_check_hv(info, false);
/* Workaround: irq doesn't occur after detaching mHL cable */
max77843_write_reg(info->muic, MAX77843_MUIC_REG_CTRL1,
MAX77843_MUIC_CTRL1_BIN_0_000);
/* Enable Factory Accessory Detection State Machine */
max77843_update_reg(info->muic,
MAX77843_MUIC_REG_CTRL2, MAX77843_CTRL2_CPEn0_LOWPWD1,
MAX77843_CTRL2_CPEn_MASK | MAX77843_CTRL2_LOWPWD_MASK);
max77843_read_reg(info->muic, MAX77843_MUIC_REG_CTRL2,
&ctrl2_val);
dev_info(info->dev, "%s: CNTL2(0x%02x)\n", __func__, ctrl2_val);
_detected(info, 0);
return 0;
}
static void max77843_muic_detect_dev(struct max77843_muic_info *info, int irq)
{
struct i2c_client *client = info->muic;
u8 status[3];
int intr = MAX77843_INT_ATTACH;
int ret;
u8 cntl1_val;
ret = max77843_read_reg(client, MAX77843_MUIC_REG_CTRL1, &cntl1_val);
dev_info(info->dev, "func:%s CONTROL1:%x\n", __func__, cntl1_val);
ret = max77843_bulk_read(client, MAX77843_MUIC_REG_STATUS1, 3, status);
dev_info(info->dev, "func:%s irq:%d ret:%d\n", __func__, irq, ret);
if (ret) {
dev_err(info->dev, "%s: fail to read muic reg(%d)\n", __func__,
ret);
return;
}
dev_info(info->dev, "%s: STATUS1:0x%x, 2:0x%x, 3:0x%x\n", __func__,
status[0], status[1], status[2]);
wake_lock_timeout(&info->muic_wake_lock, HZ * 2);
info->adc = status[0] & MAX77843_STATUS1_ADC_MASK;
info->chgtyp = status[1] & MAX77843_STATUS2_CHGTYP_MASK;
info->vbvolt = status[1] & MAX77843_STATUS2_VBVOLT_MASK;
if ((info->adc == ADC_OPEN) && (info->chgtyp == CHGTYP_NO_VOLTAGE))
intr = MAX77843_INT_DETACH;
if (intr == MAX77843_INT_ATTACH) {
dev_info(info->dev, "%s: ATTACHED/CHANGED\n", __func__);
max77843_muic_handle_attach(info, status[0], status[1], status[2], irq);
} else if (intr == MAX77843_INT_DETACH) {
dev_info(info->dev, "%s: DETACHED\n", __func__);
max77843_muic_handle_detach(info);
} else {
pr_info("%s:%s device filtered, nothing affect.\n", DEV_NAME,
__func__);
}
return;
}
static irqreturn_t max77843_muic_irq(int irq, void *data)
{
struct max77843_muic_info *info = data;
dev_info(info->dev, "%s: irq:%d\n", __func__, irq);
mutex_lock(&info->mutex);
max77843_muic_detect_dev(info, irq);
mutex_unlock(&info->mutex);
return IRQ_HANDLED;
}
static irqreturn_t max77843_muic_mrxrdy_irq(int irq, void *data)
{
struct max77843_muic_info *info = data;
dev_info(info->dev, "%s: irq:%d\n", __func__, irq);
mutex_lock(&info->mutex);
max77843_muic_check_handshaking(info);
mutex_unlock(&info->mutex);
return IRQ_HANDLED;
}
static irqreturn_t max77843_muic_vdnmon_irq(int irq, void *data)
{
struct max77843_muic_info *info = data;
dev_info(info->dev, "%s: irq:%d\n", __func__, irq);
mutex_lock(&info->mutex);
max77843_muic_set_hv(info);
mutex_unlock(&info->mutex);
return IRQ_HANDLED;
}
#define REQUEST_IRQ(_irq, _name) \
do { \
ret = request_threaded_irq(_irq, NULL, max77843_muic_irq, \
0, _name, info); \
if (ret < 0) { \
dev_err(info->dev, "Failed to request IRQ #%d: %d\n", \
_irq, ret); \
return ret; \
} \
} while (0)
#define REQUEST_MRXRDY_IRQ(_irq, _name) \
do { \
ret = request_threaded_irq(_irq, NULL, max77843_muic_mrxrdy_irq,\
0, _name, info); \
if (ret < 0) { \
dev_err(info->dev, "Failed to request IRQ #%d: %d\n", \
_irq, ret); \
return ret; \
} \
} while (0)
#define REQUEST_VDNMON_IRQ(_irq, _name) \
do { \
ret = request_threaded_irq(_irq, NULL, max77843_muic_vdnmon_irq,\
0, _name, info); \
if (ret < 0) { \
dev_err(info->dev, "Failed to request IRQ #%d: %d\n", \
_irq, ret); \
return ret; \
} \
} while (0)
static int max77843_muic_irq_init(struct max77843_muic_info *info)
{
int ret, count;
u8 val;
dev_info(info->dev, "func:%s\n", __func__);
/* INTMASK1 3:ADC1K 2:ADCErr 1:ADCLow 0:ADC */
/* INTMASK2 0:Chgtype */
/* INTMASK3 1:VDNMon */
max77843_write_reg(info->muic, MAX77843_MUIC_REG_INTMASK1, 0x09);
max77843_write_reg(info->muic, MAX77843_MUIC_REG_INTMASK2, 0x11);
max77843_write_reg(info->muic, MAX77843_MUIC_REG_INTMASK3, 0x02);
REQUEST_IRQ(info->irq_adc, "muic-adc");
REQUEST_IRQ(info->irq_chgtype, "muic-chgtype");
REQUEST_IRQ(info->irq_vbvolt, "muic-vbvolt");
REQUEST_VDNMON_IRQ(info->irq_vdnmon, "muic-vdnmon");
REQUEST_MRXRDY_IRQ(info->irq_mrxrdy, "muic-mrxrdy");
dev_info(info->dev, "adc:%d chgtype:%d vbvolt:%d vdnmon:%d mrxrdy:%d",
info->irq_adc, info->irq_chgtype, info->irq_vbvolt, info->irq_vdnmon,
info->irq_mrxrdy);
for (count = 1; count < 9 ; count ++) {
max77843_read_reg(info->muic, count, &val);
dev_info(info->dev, "%s: reg=%x, val=%x\n", __func__,
count, val);
}
return 0;
}
static void max77843_muic_init_detect(struct work_struct *work)
{
struct max77843_muic_info *info =
container_of(work, struct max77843_muic_info, init_work.work);
dev_info(info->dev, "func:%s\n", __func__);
mutex_lock(&info->mutex);
info->edev->state = 0;
max77843_muic_detect_dev(info, -1);
mutex_unlock(&info->mutex);
}
void max77843_update_jig_state(struct max77843_muic_info *info)
{
struct i2c_client *client = info->muic;
u8 reg_data, adc;
int ret, jig_state;
ret = max77843_read_reg(client, MAX77843_MUIC_REG_STATUS1, &reg_data);
if (ret) {
dev_err(info->dev, "%s: fail to read muic reg(%d)\n",
__func__, ret);
return;
}
adc = reg_data & MAX77843_STATUS1_ADC_MASK;
switch (adc) {
case ADC_JIG_UART_OFF:
case ADC_JIG_USB_OFF:
case ADC_JIG_USB_ON:
jig_state = true;
break;
default:
jig_state = false;
break;
}
max77843_muic_uart_uevent(jig_state);
}
static int max77843_muic_probe(struct platform_device *pdev)
{
struct max77843_dev *max77843 = dev_get_drvdata(pdev->dev.parent);
struct max77843_platform_data *pdata = dev_get_platdata(max77843->dev);
struct max77843_muic_info *info;
int ret;
u8 cdetctrl1;
pr_info("func:%s\n", __func__);
info = kzalloc(sizeof(struct max77843_muic_info), GFP_KERNEL);
if (!info) {
dev_err(&pdev->dev, "%s: failed to allocate info\n", __func__);
ret = -ENOMEM;
goto err_return;
}
info->dev = &pdev->dev;
info->max77843 = max77843;
info->muic = max77843->muic;
info->irq_adc = max77843->irq_base + MAX77843_MUIC_IRQ_INT1_ADC;
info->irq_vbvolt = max77843->irq_base + MAX77843_MUIC_IRQ_INT2_VBVOLT;
info->irq_chgtype = max77843->irq_base + MAX77843_MUIC_IRQ_INT2_CHGTYP;
info->irq_vdnmon = max77843->irq_base + MAX77843_MUIC_IRQ_INT3_VDNMON;
info->irq_mrxrdy = max77843->irq_base + MAX77843_MUIC_IRQ_INT3_MRXRDY;
info->muic_data = pdata->muic_data;
info->muic_data->uart_sel = MAX77843_PATH_UART_AP;
info->is_adc_open_prev = true;
#if !defined(CONFIG_MUIC_MAX77843_SUPPORT_CAR_DOCK)
info->is_factory_start = false;
#endif /* !CONFIG_MUIC_MZX77843_SUPPORT_CAR_DOCK */
info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev),
GFP_KERNEL);
if (!info->edev) {
dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
ret = -ENOMEM;
goto err_info_free;
}
info->edev->name=EXTCON_DEV_NAME;
info->edev->supported_cable = extcon_cable_name;
ret = extcon_dev_register(info->edev, NULL);
if (ret) {
dev_err(&pdev->dev, "failed to register extcon device\n");
goto err_info_free;
}
wake_lock_init(&info->muic_wake_lock, WAKE_LOCK_SUSPEND,
"muic wake lock");
info->cable_name = EXTCON_NONE;
info->muic_data->usb_sel = MAX77843_PATH_USB_AP;
/* Fix HV Charging Pin value */
info->tx_data = 0x46;
/* Fix HV Charging Pin value */
gInfo = info;
platform_set_drvdata(pdev, info);
dev_info(info->dev, "adc:%d chgtype:%d\n",
info->irq_adc, info->irq_chgtype);
#if defined(CONFIG_SWITCH_DUAL_MODEM)
switch_sel &= 0xf;
if ((switch_sel & MAX77843_SWITCH_SEL_1st_BIT_USB) == 0x1)
info->muic_data->usb_sel = MAX77843_PATH_USB_AP;
else
info->muic_data->usb_sel = MAX77843_PATH_USB_AUX;
if ((switch_sel & MAX77843_SWITCH_SEL_2nd_BIT_UART) == 0x1 << 1)
info->muic_data->uart_sel = MAX77843_PATH_UART_AP;
else
info->muic_data->uart_sel = MAX77843_PATH_UART_AUX;
pr_err("%s: switch_sel: %x\n", __func__, switch_sel);
#endif
/* create sysfs group */
ret = sysfs_create_group(&switch_dev->kobj, &max77843_muic_group);
pr_info("dev_set_drvdata:%s\n", __func__);
dev_set_drvdata(switch_dev, info);
if (ret) {
dev_err(&pdev->dev,
"failed to create max77843 muic attribute group\n");
goto err_input;
}
mutex_init(&info->mutex);
/* Set ADC debounce time: 25ms */
max77843_muic_set_adcdbset(info, 2);
/* Set DCDTmr to 2sec */
max77843_read_reg(info->max77843->muic,
MAX77843_MUIC_REG_CDETCTRL1, &cdetctrl1);
/* Get ADC Mode value */
max77843_read_reg(info->max77843->muic,
MAX77843_MUIC_REG_CTRL4, &info->adc_mode);
info->adc_mode = info->adc_mode >> MAX77843_CTRL4_ADCMODE_SHIFT;
pr_info("%s: ADCMODE(0x%x)\n", __func__, info->adc_mode);
cdetctrl1 &= ~(1 << 5);
max77843_write_reg(info->max77843->muic,
MAX77843_MUIC_REG_CDETCTRL1, cdetctrl1);
pr_info("%s: CDETCTRL1(0x%02x)\n", __func__, cdetctrl1);
ret = switch_dev_register(&switch_uart3);
if (ret < 0) {
pr_err("%s : Failed to register switch_uart3 device\n", __func__);
goto err_switch_uart3_dev_register;
}
ret = max77843_muic_irq_init(info);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to initialize MUIC irq:%d\n", ret);
goto fail;
}
/* initial cable detection */
INIT_DELAYED_WORK(&info->init_work, max77843_muic_init_detect);
schedule_delayed_work(&info->init_work, msecs_to_jiffies(3000));
/* init jig state */
max77843_update_jig_state(info);
return 0;
fail:
if (info->irq_adc)
free_irq(info->irq_adc, NULL);
if (info->irq_chgtype)
free_irq(info->irq_chgtype, NULL);
if (info->irq_vbvolt)
free_irq(info->irq_vbvolt, NULL);
if (info->irq_vdnmon)
free_irq(info->irq_vdnmon, NULL);
if (info->irq_mrxrdy)
free_irq(info->irq_mrxrdy, NULL);
switch_dev_unregister(&switch_uart3);
err_switch_uart3_dev_register:
mutex_destroy(&info->mutex);
err_input:
platform_set_drvdata(pdev, NULL);
wake_lock_destroy(&info->muic_wake_lock);
err_info_free:
kfree(info);
err_return:
return ret;
}
#if !defined(CONFIG_SEC_FACTORY)
static int max77843_suspend(struct device *dev)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
if (info)
max77843_muic_set_path(info, MAX77843_PATH_OPEN);
else
pr_err("%s:, dev_get_drvdata fail\n", __func__);
return 0;
}
static int max77843_resume(struct device *dev)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
if (info)
max77843_muic_set_path(info, info->path);
else
pr_err("%s:, dev_get_drvdata fail\n", __func__);
return 0;
}
static const struct dev_pm_ops max77843_dev_pm_ops = {
.suspend = max77843_suspend,
.resume = max77843_resume,
};
#endif
static int max77843_muic_remove(struct platform_device *pdev)
{
struct max77843_muic_info *info = platform_get_drvdata(pdev);
sysfs_remove_group(&switch_dev->kobj, &max77843_muic_group);
if (info) {
dev_info(info->dev, "func:%s\n", __func__);
cancel_delayed_work(&info->init_work);
free_irq(info->irq_adc, info);
free_irq(info->irq_chgtype, info);
free_irq(info->irq_vbvolt, info);
free_irq(info->irq_vdnmon, info);
free_irq(info->irq_mrxrdy, info);
wake_lock_destroy(&info->muic_wake_lock);
mutex_destroy(&info->mutex);
kfree(info);
}
return 0;
}
void max77843_muic_shutdown(struct device *dev)
{
struct max77843_muic_info *info = dev_get_drvdata(dev);
int ret;
u8 val;
dev_info(info->dev, "func:%s\n", __func__);
if (!info->muic) {
dev_err(info->dev, "%s: no muic i2c client\n", __func__);
return;
}
dev_info(info->dev, "%s: JIGSet: auto detection\n", __func__);
val = (0 << MAX77843_CTRL3_JIGSET_SHIFT);
ret = max77843_update_reg(info->muic, MAX77843_MUIC_REG_CTRL3, val,
MAX77843_CTRL3_JIGSET_MASK);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update reg\n", __func__);
return;
}
}
static struct platform_driver max77843_muic_driver = {
.driver = {
.name = DEV_NAME,
.owner = THIS_MODULE,
#if !defined(CONFIG_SEC_FACTORY)
.pm = &max77843_dev_pm_ops,
#endif
.shutdown = max77843_muic_shutdown,
},
.probe = max77843_muic_probe,
.remove = max77843_muic_remove,
};
static int __init max77843_muic_init(void)
{
pr_info("func:%s\n", __func__);
return platform_driver_register(&max77843_muic_driver);
}
module_init(max77843_muic_init);
static void __exit max77843_muic_exit(void)
{
pr_info("func:%s\n", __func__);
platform_driver_unregister(&max77843_muic_driver);
}
module_exit(max77843_muic_exit);
MODULE_DESCRIPTION("Maxim MAX77843 MUIC driver");
MODULE_AUTHOR("<sukdong.kim@samsung.com>");
MODULE_LICENSE("GPL");
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