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android_kernel_samsung_on5x.../drivers/muic/sm5504.c
awab228 f6dfaef42e Fixed MTP to work with TWRP
2018-06-19 23:16:04 +02:00

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/*
* driver/muic/sm5504.c - sm5504 micro USB switch device driver
*
* Copyright (C) 2016 Samsung Electronics
*
* 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/device.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/wakelock.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/muic/muic.h>
#include <linux/muic/sm5504.h>
#if defined(CONFIG_MUIC_NOTIFIER)
#include <linux/muic/muic_notifier.h>
#endif /* CONFIG_MUIC_NOTIFIER */
#if defined(CONFIG_VBUS_NOTIFIER)
#include <linux/vbus_notifier.h>
#endif /* CONFIG_VBUS_NOTIFIER */
extern struct muic_platform_data muic_pdata;
static void sm5504_muic_handle_attach(struct sm5504_muic_data *muic_data,
muic_attached_dev_t new_dev, int adc, u8 vbvolt);
static void sm5504_muic_handle_detach(struct sm5504_muic_data *muic_data);
static int sm5504_i2c_read_byte(const struct i2c_client *client, u8 command)
{
int ret;
int retry = 0;
ret = i2c_smbus_read_byte_data(client, command);
while (ret < 0) {
pr_err("%s:%s: reg(0x%x), retrying...\n", MUIC_DEV_NAME, __func__, command);
if (retry > 5) {
pr_err("%s:%s: retry failed!!\n", MUIC_DEV_NAME, __func__);
break;
}
msleep(100);
ret = i2c_smbus_read_byte_data(client, command);
retry++;
}
return ret;
}
static int sm5504_i2c_write_byte(const struct i2c_client *client, u8 command, u8 value)
{
int ret;
int retry = 0;
int written = 0;
ret = i2c_smbus_write_byte_data(client, command, value);
while (ret < 0) {
pr_err("%s:%s: reg(0x%x), retrying...\n", MUIC_DEV_NAME, __func__, command);
if (retry > 5) {
pr_err("%s:%s: retry failed!!\n", MUIC_DEV_NAME, __func__);
break;
}
msleep(100);
ret = i2c_smbus_read_byte_data(client, command);
if (written < 0)
pr_err("%s:%s: reg(0x%x)\n", MUIC_DEV_NAME, __func__, command);
ret = i2c_smbus_write_byte_data(client, command, value);
retry++;
}
return ret;
}
static ssize_t sm5504_muic_show_uart_en(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
int ret = 0;
if (!muic_data->is_rustproof) {
pr_info("%s:%s: UART ENABLE\n", MUIC_DEV_NAME, __func__);
ret = sprintf(buf, "1\n");
} else {
pr_info("%s:%s: UART DISABLE\n", MUIC_DEV_NAME, __func__);
ret = sprintf(buf, "0\n");
}
return ret;
}
static ssize_t sm5504_muic_set_uart_en(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
if (!strncmp(buf, "1", 1))
muic_data->is_rustproof = false;
else if (!strncmp(buf, "0", 1))
muic_data->is_rustproof = true;
else
pr_info("%s:%s: invalid value\n", MUIC_DEV_NAME, __func__);
pr_info("%s:%s: uart_en(%d)\n", MUIC_DEV_NAME, __func__, !muic_data->is_rustproof);
return count;
}
static ssize_t sm5504_muic_show_usb_en(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
return sprintf(buf, "%s:%s attached_dev = %d\n",
MUIC_DEV_NAME, __func__, muic_data->attached_dev);
}
static ssize_t sm5504_muic_set_usb_en(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
muic_attached_dev_t new_dev = ATTACHED_DEV_USB_MUIC;
if (!strncasecmp(buf, "1", 1))
sm5504_muic_handle_attach(muic_data, new_dev, 0, 0);
else if (!strncasecmp(buf, "0", 1))
sm5504_muic_handle_detach(muic_data);
else
pr_info("%s:%s: invalid value\n", MUIC_DEV_NAME, __func__);
pr_info("%s:%s: attached_dev(%d)\n", MUIC_DEV_NAME, __func__, muic_data->attached_dev);
return count;
}
static ssize_t sm5504_muic_show_adc(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
int ret;
mutex_lock(&muic_data->muic_mutex);
ret = sm5504_i2c_read_byte(muic_data->i2c, SM5504_MUIC_REG_ADC);
mutex_unlock(&muic_data->muic_mutex);
if (ret < 0) {
pr_err("%s:%s: err read adc reg(%d)\n", MUIC_DEV_NAME, __func__, ret);
return sprintf(buf, "UNKNOWN\n");
}
return sprintf(buf, "%x\n", (ret & ADC_MASK));
}
static ssize_t sm5504_muic_show_usb_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
static unsigned long swtich_slot_time;
if (printk_timed_ratelimit(&swtich_slot_time, 5000))
pr_info("%s:%s: muic_data->attached_dev(%d)\n",
MUIC_DEV_NAME, __func__, muic_data->attached_dev);
switch (muic_data->attached_dev) {
case ATTACHED_DEV_USB_MUIC:
case ATTACHED_DEV_CDP_MUIC:
case ATTACHED_DEV_JIG_USB_OFF_MUIC:
case ATTACHED_DEV_JIG_USB_ON_MUIC:
return sprintf(buf, "USB_STATE_CONFIGURED\n");
default:
break;
}
return 0;
}
static ssize_t sm5504_muic_show_attached_dev(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
pr_info("%s:%s: attached_dev[%d]\n", MUIC_DEV_NAME, __func__, muic_data->attached_dev);
switch (muic_data->attached_dev) {
case ATTACHED_DEV_NONE_MUIC:
return sprintf(buf, "No VPS\n");
case ATTACHED_DEV_USB_MUIC:
return sprintf(buf, "USB\n");
case ATTACHED_DEV_CDP_MUIC:
return sprintf(buf, "CDP\n");
case ATTACHED_DEV_OTG_MUIC:
return sprintf(buf, "OTG\n");
case ATTACHED_DEV_TA_MUIC:
return sprintf(buf, "TA\n");
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
return sprintf(buf, "JIG UART OFF\n");
case ATTACHED_DEV_JIG_UART_OFF_VB_MUIC:
return sprintf(buf, "JIG UART OFF/VB\n");
case ATTACHED_DEV_JIG_UART_ON_MUIC:
return sprintf(buf, "JIG UART ON\n");
case ATTACHED_DEV_JIG_USB_OFF_MUIC:
return sprintf(buf, "JIG USB OFF\n");
case ATTACHED_DEV_JIG_USB_ON_MUIC:
return sprintf(buf, "JIG USB ON\n");
case ATTACHED_DEV_DESKDOCK_MUIC:
case ATTACHED_DEV_DESKDOCK_VB_MUIC:
return sprintf(buf, "DESKDOCK\n");
case ATTACHED_DEV_CHARGING_CABLE_MUIC:
return sprintf(buf, "PS CABLE\n");
default:
break;
}
return sprintf(buf, "UNKNOWN\n");
}
#if defined(CONFIG_USB_HOST_NOTIFY)
static ssize_t sm5504_muic_show_otg_test(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
int ret;
u8 val = 0;
mutex_lock(&muic_data->muic_mutex);
ret = sm5504_i2c_read_byte(muic_data->i2c, SM5504_MUIC_REG_INT_MASK2);
mutex_unlock(&muic_data->muic_mutex);
if (ret < 0) {
pr_err("%s:%s: fail to read muic reg\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "UNKNOWN\n");
}
pr_info("%s:%s: ret:%d val:%x buf%s\n", MUIC_DEV_NAME, __func__, ret, val, buf);
val &= INTMASK1_CHGDET;
return sprintf(buf, "%x\n", val);
}
static ssize_t sm5504_muic_set_otg_test(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
pr_info("%s:%s: buf:%s\n", MUIC_DEV_NAME, __func__, buf);
/*
* The otg_test is set 0 durring the otg test. Not 1 !!!
*/
if (!strncmp(buf, "0", 1))
muic_data->is_otg_test = true;
else if (!strncmp(buf, "1", 1))
muic_data->is_otg_test = false;
else {
pr_info("%s:%s: Wrong command\n", MUIC_DEV_NAME, __func__);
return count;
}
return count;
}
#endif
static ssize_t sm5504_muic_show_apo_factory(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
const char *mode;
/* true: Factory mode, false: not Factory mode */
if (muic_data->is_factory_start)
mode = "FACTORY_MODE";
else
mode = "NOT_FACTORY_MODE";
pr_info("%s:%s: mode status[%s]\n", MUIC_DEV_NAME, __func__, mode);
return sprintf(buf, "%s\n", mode);
}
static ssize_t sm5504_muic_set_apo_factory(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct sm5504_muic_data *muic_data = dev_get_drvdata(dev);
const char *mode;
pr_info("%s:%s: buf:%s\n", MUIC_DEV_NAME, __func__, buf);
/* "FACTORY_START": factory mode */
if (!strncmp(buf, "FACTORY_START", 13)) {
muic_data->is_factory_start = true;
mode = "FACTORY_MODE";
} else {
pr_info( "%s:%s: Wrong command\n", MUIC_DEV_NAME, __func__);
return count;
}
return count;
}
static DEVICE_ATTR(uart_en, 0664, sm5504_muic_show_uart_en,
sm5504_muic_set_uart_en);
static DEVICE_ATTR(usb_en, 0664, sm5504_muic_show_usb_en,
sm5504_muic_set_usb_en);
static DEVICE_ATTR(adc, 0664, sm5504_muic_show_adc, NULL);
static DEVICE_ATTR(usb_state, 0664, sm5504_muic_show_usb_state, NULL);
static DEVICE_ATTR(attached_dev, 0664, sm5504_muic_show_attached_dev, NULL);
#if defined(CONFIG_USB_HOST_NOTIFY)
static DEVICE_ATTR(otg_test, 0664, sm5504_muic_show_otg_test,
sm5504_muic_set_otg_test);
#endif
static DEVICE_ATTR(apo_factory, 0664, sm5504_muic_show_apo_factory,
sm5504_muic_set_apo_factory);
static struct attribute *sm5504_muic_attributes[] = {
&dev_attr_uart_en.attr,
&dev_attr_usb_en.attr,
&dev_attr_adc.attr,
&dev_attr_usb_state.attr,
&dev_attr_attached_dev.attr,
#if defined(CONFIG_USB_HOST_NOTIFY)
&dev_attr_otg_test.attr,
#endif
&dev_attr_apo_factory.attr,
NULL
};
static const struct attribute_group sm5504_muic_group = {
.attrs = sm5504_muic_attributes,
};
static int set_com_sw(struct sm5504_muic_data *muic_data,
u8 reg_val)
{
struct i2c_client *i2c = muic_data->i2c;
int ret = 0;
int temp = 0;
/* --- MANSW [7:5][4:2][1:0] : DM DP RSVD --- */
temp = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_MAN_SW1);
if (temp < 0)
pr_err("%s:%s: err read MANSW(0x%x)\n", MUIC_DEV_NAME, __func__, temp);
temp &= ~MANUAL_SW1_MASK;
temp |= (reg_val & MANUAL_SW1_MASK);
pr_info("%s:%s 0x%02x, 0x%02x\n", MUIC_DEV_NAME, __func__, temp, reg_val);
ret = sm5504_i2c_write_byte(i2c, SM5504_MUIC_REG_MAN_SW1, temp);
return ret;
}
static int com_to_open(struct sm5504_muic_data *muic_data)
{
u8 reg_val;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
reg_val = COM_OPEM;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s: set_com_sw err\n", MUIC_DEV_NAME, __func__);
return ret;
}
static int com_to_usb(struct sm5504_muic_data *muic_data)
{
u8 reg_val;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
reg_val = COM_TO_USB;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s: set_com_usb err\n", MUIC_DEV_NAME, __func__);
return ret;
}
static int com_to_uart(struct sm5504_muic_data *muic_data)
{
u8 reg_val;
int ret = 0;
pr_info("%s:%s: rustproof mode[%d]\n", MUIC_DEV_NAME, __func__, muic_data->is_rustproof);
if (muic_data->is_rustproof)
return ret;
reg_val = COM_TO_UART;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s: set_com_uart err\n", MUIC_DEV_NAME, __func__);
return ret;
}
static void sm5504_check_reg(struct sm5504_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
int ctrl = 0, mansw2 = 0;
ctrl = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_CTRL);
mansw2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_MAN_SW1);
pr_info("%s:%s: ctrl:0x%02x mansw2:0x%02x\n", MUIC_DEV_NAME, __func__, ctrl, mansw2);
}
static void sm5504_set_manual_mode(struct sm5504_muic_data *muic_data, int en)
{
struct i2c_client *i2c = muic_data->i2c;
int reg = 0;
int ret = 0;
reg = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_CTRL);
if (en) /* manual mode */
reg &= ~MANUAL_SWITCH;
else /* auto mode */
reg |= MANUAL_SWITCH;
ret = sm5504_i2c_write_byte(i2c, SM5504_MUIC_REG_CTRL, reg);
if (ret < 0)
pr_err( "%s:%s: fail to update reg\n", MUIC_DEV_NAME, __func__);
}
int sm5504_muic_set_path(void *drv_data, int path)
{
struct sm5504_muic_data *muic_data = (struct sm5504_muic_data *)drv_data;
int ret = 0;
pr_info("%s: %s path : %d\n", MUIC_DEV_NAME, __func__, path);
sm5504_check_reg(muic_data);
if (path) { /* UART */
sm5504_set_manual_mode(muic_data, 0);
ret = com_to_uart(muic_data); /*FIXME: it needs not? */
} else { /* USB */
sm5504_set_manual_mode(muic_data, 1);
ret = com_to_usb(muic_data);
}
/* FIXME : check register */
sm5504_check_reg(muic_data);
return ret;
}
static void sm5504_muic_handle_detach(struct sm5504_muic_data *muic_data)
{
int ret = 0;
bool noti = true;
if (muic_data->attached_dev == ATTACHED_DEV_NONE_MUIC) {
pr_info("%s:%s: Detach duplicated(NONE)\n", MUIC_DEV_NAME, __func__);
goto out_without_noti;
}
pr_info("%s:%s: Detach device[%d]\n", MUIC_DEV_NAME, __func__, muic_data->attached_dev);
#if defined(CONFIG_MUIC_NOTIFIER)
if (noti) {
if (!muic_data->suspended)
muic_notifier_detach_attached_dev(muic_data->attached_dev);
else
muic_data->need_to_noti = true;
}
#endif /* CONFIG_MUIC_NOTIFIER */
out_without_noti:
ret = com_to_open(muic_data);
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
}
static void sm5504_muic_handle_attach(struct sm5504_muic_data *muic_data,
muic_attached_dev_t new_dev, int adc, u8 vbvolt)
{
int ret = 0;
bool noti = (new_dev != muic_data->attached_dev) ? true : false;
pr_info("%s:%s: muic_data->attached_dev: %d, new_dev: %d, muic_data->suspended: %d\n",
MUIC_DEV_NAME, __func__, muic_data->attached_dev, new_dev, muic_data->suspended);
if (new_dev == muic_data->attached_dev) {
pr_info("%s:%s: Attach duplicated\n", MUIC_DEV_NAME, __func__);
return;
}
/* Logically Detach Accessary */
switch (muic_data->attached_dev) {
case ATTACHED_DEV_NONE_MUIC:
break;
case ATTACHED_DEV_JIG_UART_OFF_VB_MUIC:
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
switch (new_dev) {
case ATTACHED_DEV_JIG_UART_OFF_VB_MUIC:
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
break;
default:
sm5504_muic_handle_detach(muic_data);
break;
}
break;
case ATTACHED_DEV_DESKDOCK_MUIC:
case ATTACHED_DEV_DESKDOCK_VB_MUIC:
switch (new_dev) {
case ATTACHED_DEV_DESKDOCK_MUIC:
case ATTACHED_DEV_DESKDOCK_VB_MUIC:
break;
default:
sm5504_muic_handle_detach(muic_data);
break;
}
break;
default:
sm5504_muic_handle_detach(muic_data);
break;
}
pr_info("%s:%s: new(%d)!=attached(%d)\n", MUIC_DEV_NAME, __func__,
new_dev, muic_data->attached_dev);
/* Attach Accessary */
noti = true;
switch (new_dev) {
case ATTACHED_DEV_USB_MUIC:
case ATTACHED_DEV_CDP_MUIC:
case ATTACHED_DEV_OTG_MUIC:
case ATTACHED_DEV_JIG_USB_OFF_MUIC:
case ATTACHED_DEV_JIG_USB_ON_MUIC:
ret = com_to_usb(muic_data);
break;
case ATTACHED_DEV_TA_MUIC:
case ATTACHED_DEV_UNDEFINED_CHARGING_MUIC:
case ATTACHED_DEV_UNKNOWN_MUIC:
case ATTACHED_DEV_RDU_TA_MUIC:
case ATTACHED_DEV_JIG_UART_ON_MUIC:
case ATTACHED_DEV_DESKDOCK_MUIC:
case ATTACHED_DEV_DESKDOCK_VB_MUIC:
ret = com_to_open(muic_data);
break;
case ATTACHED_DEV_JIG_UART_OFF_VB_MUIC:
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
ret = com_to_uart(muic_data);
break;
default:
noti = false;
pr_info("%s:%s: unsupported dev=%d, adc=0x%x, vbus=%c\n",
MUIC_DEV_NAME, __func__, new_dev, adc, (vbvolt ? 'O' : 'X'));
break;
}
if (ret)
pr_err("%s:%s: something wrong %d (ERR=%d)\n", MUIC_DEV_NAME, __func__, new_dev, ret);
#if defined(CONFIG_MUIC_NOTIFIER)
if (noti) {
if (!muic_data->suspended)
muic_notifier_attach_attached_dev(new_dev);
else
muic_data->need_to_noti = true;
}
#endif /* CONFIG_MUIC_NOTIFIER */
muic_data->attached_dev = new_dev;
}
static void sm5504_muic_detect_dev(struct sm5504_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
muic_attached_dev_t new_dev = ATTACHED_DEV_UNKNOWN_MUIC;
int id = 0, ctrl = 0, mansw_val1 = 0, mansw_val2 = 0;
int dev1 = 0, dev2 = 0, adc = 0;
id = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_DEV_ID);
ctrl = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_CTRL);
mansw_val1 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_MAN_SW1);
mansw_val2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_MAN_SW2);
dev1 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_DEV_TYPE1);
dev2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_DEV_TYPE2);
adc = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_ADC);
pr_info("%s:%s: id:0x%02x, ctrl:0x%02x, mansw1:0x%02x, mansw2:0x%02x\n", MUIC_DEV_NAME, __func__, id, ctrl, mansw_val1,mansw_val2);
pr_info("%s:%s: dev[1:0x%02x, 2:0x%02x], adc:0x%02x, vbvolt:0x%02x\n", MUIC_DEV_NAME, __func__,
dev1, dev2, adc, muic_data->vbvolt);
/* Detected */
switch (dev1) {
case SM5504_DEV_OTG:
new_dev = ATTACHED_DEV_OTG_MUIC;
pr_info("%s:%s: USB_OTG DETECTED\n", MUIC_DEV_NAME, __func__);
// OTG enable W/A for JAVA Rev03 board
if (muic_data->otg_en == 1)
break;
else
return;
case SM5504_DEV_SDP:
new_dev = ATTACHED_DEV_USB_MUIC;
pr_info("%s:%s: USB DETECTED\n", MUIC_DEV_NAME, __func__);
break;
case SM5504_DEV_UART:
break;
case SM5504_DEV_CDP:
new_dev = ATTACHED_DEV_CDP_MUIC;
pr_info("%s:%s: USB_CDP DETECTED\n", MUIC_DEV_NAME, __func__);
break;
case SM5504_DEV_DCP:
new_dev = ATTACHED_DEV_TA_MUIC;
pr_info("%s:%s:DEDICATED CHARGER DETECTED\n", MUIC_DEV_NAME, __func__);
break;
default:
break;
}
switch (dev2) {
case SM5504_DEV_JIG_USB_ON:
if (!muic_data->vbvolt)
break;
new_dev = ATTACHED_DEV_JIG_USB_ON_MUIC;
pr_info("%s:%s: JIG_USB_ON DETECTED\n", MUIC_DEV_NAME, __func__);
break;
case SM5504_DEV_JIG_USB_OFF:
if (!muic_data->vbvolt)
break;
new_dev = ATTACHED_DEV_JIG_USB_OFF_MUIC;
pr_info("%s:%s: JIG_USB_OFF DETECTED\n", MUIC_DEV_NAME, __func__);
break;
case SM5504_DEV_JIG_UART_ON:
if (new_dev != ATTACHED_DEV_JIG_UART_ON_MUIC) {
new_dev = ATTACHED_DEV_JIG_UART_ON_MUIC;
pr_info("%s:%s: JIG_UART_ON DETECTED\n", MUIC_DEV_NAME, __func__);
}
break;
case SM5504_DEV_JIG_UART_OFF:
if (!muic_data->is_otg_test) {
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_JIG_UART_OFF_VB_MUIC;
pr_info("%s:%s: JIG_UART_OFF_VB DETECTED\n", MUIC_DEV_NAME, __func__);
}
else {
new_dev = ATTACHED_DEV_JIG_UART_OFF_MUIC;
pr_info("%s:%s: JIG_UART_OFF DETECTED\n", MUIC_DEV_NAME, __func__);
}
}
else {
new_dev = ATTACHED_DEV_JIG_UART_OFF_MUIC;
pr_info("%s:%s: JIG_UART_OFF DETECTED\n", MUIC_DEV_NAME, __func__);
}
break;
case SM5504_DEV_JIG_UNKNOWN:
pr_info("%s:%s: UNKNOWN DEVICE DETECTED\n", MUIC_DEV_NAME, __func__);
break;
default:
break;
}
/* If there is no matching device found using device type registers
use ADC to find the attached device */
if (new_dev == ATTACHED_DEV_UNKNOWN_MUIC) {
switch (adc) {
/* This is workaround for LG USB cable which has 219k ohm ID */
case ADC_CEA936ATYPE1_CHG:
case ADC_JIG_USB_OFF:
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_USB_MUIC;
pr_info("%s:%s: TYPE1_CHARGER or X_CABLE DETECTED (USB)\n", MUIC_DEV_NAME, __func__);
}
break;
case ADC_JIG_USB_ON:
if (!muic_data->vbvolt)
break;
new_dev = ATTACHED_DEV_JIG_USB_ON_MUIC;
pr_info("%s:%s: JIG_USB_ON DETECTED\n", MUIC_DEV_NAME, __func__);
break;
case ADC_CEA936ATYPE2_CHG:
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_TA_MUIC;
pr_info("%s:%s: TYPE2_CHARGER DETECTED\n", MUIC_DEV_NAME, __func__);
}
break;
case ADC_JIG_UART_OFF:
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_JIG_UART_OFF_VB_MUIC;
pr_info("%s:%s: JIG_UART_OFF_VB DETECTED\n", MUIC_DEV_NAME, __func__);
}
else {
new_dev = ATTACHED_DEV_JIG_UART_OFF_MUIC;
pr_info("%s:%s: JIG_UART_OFF DETECTED\n", MUIC_DEV_NAME, __func__);
}
break;
case ADC_JIG_UART_ON:
new_dev = ATTACHED_DEV_JIG_UART_ON_MUIC;
pr_info("%s:%s: JIG_UART_ON DETECTED\n", MUIC_DEV_NAME, __func__);
break;
case ADC_RDU_TA:
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_RDU_TA_MUIC;
pr_info("%s:%s: LDU/RDU TA DETECTED\n", MUIC_DEV_NAME, __func__);
}
break;
case ADC_DESKDOCK:
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_DESKDOCK_VB_MUIC;
pr_info("%s:%s: DESKDOCK+VB DETECTED\n", MUIC_DEV_NAME, __func__);
}
else {
new_dev = ATTACHED_DEV_DESKDOCK_MUIC;
pr_info("%s:%s: DESKDOCK DETECTED\n", MUIC_DEV_NAME, __func__);
}
break;
default:
break;
}
}
if ((new_dev == ATTACHED_DEV_UNKNOWN_MUIC) && (ADC_OPEN != adc)) {
if (muic_data->vbvolt) {
new_dev = ATTACHED_DEV_UNDEFINED_CHARGING_MUIC;
pr_info("%s:%s: UNDEFINED CHARGING (0x%02x)\n", MUIC_DEV_NAME, __func__, adc);
}
}
if (new_dev != ATTACHED_DEV_UNKNOWN_MUIC) {
pr_info("%s:%s ATTACHED\n", MUIC_DEV_NAME, __func__);
sm5504_muic_handle_attach(muic_data, new_dev, adc, muic_data->vbvolt);
}
else {
pr_info("%s:%s DETACHED\n", MUIC_DEV_NAME, __func__);
sm5504_muic_handle_detach(muic_data);
}
#if defined(CONFIG_VBUS_NOTIFIER)
vbus_notifier_handle((!!muic_data->vbvolt) ? STATUS_VBUS_HIGH : STATUS_VBUS_LOW);
#endif /* CONFIG_VBUS_NOTIFIER */
}
static int sm5504_muic_reg_init(struct sm5504_muic_data *muic_data);
static irqreturn_t sm5504_muic_irq_thread(int irq, void *data)
{
struct sm5504_muic_data *muic_data = data;
struct i2c_client *i2c = muic_data->i2c;
int int1 = 0, int2 = 0;
int ctrl = 0;
msleep(10);
/* Read and Clear Interrupt1/2 */
int1 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_INT1);
int2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_INT2);
pr_info("%s:%s: INT1[0x%02x],INT2[0x%02x]\n", MUIC_DEV_NAME, __func__, int1, int2);
muic_data->vbvolt = !(int2 & INT_UVLO_MASK);
ctrl = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_CTRL);
pr_info("%s:%s: CTRL[0x%02x]\n", MUIC_DEV_NAME, __func__, ctrl);
if (ctrl&0x01) {
sm5504_muic_reg_init(muic_data);
return IRQ_HANDLED;
}
mutex_lock(&muic_data->muic_mutex);
wake_lock(&muic_data->muic_wake_lock);
/* device detection */
sm5504_muic_detect_dev(muic_data);
wake_unlock(&muic_data->muic_wake_lock);
mutex_unlock(&muic_data->muic_mutex);
return IRQ_HANDLED;
}
static int sm5504_muic_irq_init(struct sm5504_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
struct muic_platform_data *pdata = muic_data->pdata;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (!pdata->irq_gpio) {
pr_err("%s:%s: No interrupt specified\n", MUIC_DEV_NAME, __func__);
return -ENXIO;
}
i2c->irq = gpio_to_irq(pdata->irq_gpio);
if (i2c->irq) {
ret = request_threaded_irq(i2c->irq, NULL,
sm5504_muic_irq_thread,
(IRQF_TRIGGER_FALLING |
IRQF_NO_SUSPEND | IRQF_ONESHOT),
"sm5504-muic", muic_data);
if (ret < 0) {
pr_err("%s:%s: failed to request IRQ(%d)\n",
MUIC_DEV_NAME, __func__, i2c->irq);
return ret;
}
ret = enable_irq_wake(i2c->irq);
if (ret < 0)
pr_err("%s:%s: failed to enable wakeup src\n", MUIC_DEV_NAME, __func__);
}
return ret;
}
#if defined(CONFIG_OF)
static int of_sm5504_muic_dt(struct device *dev, struct sm5504_muic_data *muic_data)
{
struct device_node *np_muic = dev->of_node;
int ret = 0;
if (np_muic == NULL) {
pr_err("%s:%s: np NULL\n", MUIC_DEV_NAME, __func__);
return -EINVAL;
} else {
muic_data->pdata->irq_gpio =
of_get_named_gpio(np_muic, "sm5504,irq-gpio", 0);
if (muic_data->pdata->irq_gpio < 0) {
pr_err("%s:%s: failed to get muic_irq = %d\n",
MUIC_DEV_NAME, __func__, muic_data->pdata->irq_gpio);
muic_data->pdata->irq_gpio = 0;
}
if (of_gpio_count(np_muic) < 1) {
pr_err("%s:%s: could not find muic gpio\n", MUIC_DEV_NAME, __func__);
muic_data->pdata->gpio_uart_sel = 0;
} else
muic_data->pdata->gpio_uart_sel = of_get_gpio(np_muic, 0);
// OTG enable W/A for JAVA Rev03 board
ret = of_property_read_u8(np_muic, "sm5504,otg_en", &muic_data->otg_en);
if (ret) {
pr_err("%s:%s There is no Property of sm5504,otg_en\n",
MUIC_DEV_NAME, __func__);
muic_data->otg_en = 0;
}
pr_info("%s:%s muic_data->otg_en:0x%02x\n", MUIC_DEV_NAME, __func__, muic_data->otg_en);
}
return ret;
}
#endif /* CONFIG_OF */
static int sm5504_muic_reg_init(struct sm5504_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
int ret = 0;
int dev1 = 0, dev2 = 0, adc = 0, mansw1 = 0, ctrl = 0, intmask2 = 0;
int int1, int2, reg_set;
/* Read and Clear Interrupt1/2 */
int1 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_INT1);
int2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_INT2);
pr_info("%s:%s: INT1[0x%02x],INT2[0x%02x]\n", MUIC_DEV_NAME, __func__, int1, int2);
dev1 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_DEV_TYPE1);
dev2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_DEV_TYPE2);
mansw1 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_MAN_SW1);
adc = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_ADC);
ctrl = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_CTRL);
intmask2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_INT_MASK2);
pr_info("%s:%s: DEV1[0x%02x], DEV2[0x%02x], MANSW1[0x%02x], \
ADC[0x%02x], CTRL[0x%02x], INTMASK2[0x%02x]\n", MUIC_DEV_NAME, \
__func__, dev1, dev2, mansw1, adc, ctrl, intmask2);
ret = sm5504_i2c_write_byte(i2c, SM5504_MUIC_REG_CTRL, CTRL_INIT);
if (ret < 0)
pr_err( "%s:%s: failed to write ctrl(%d)\n", MUIC_DEV_NAME, __func__, ret);
ctrl = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_CTRL);
ret = sm5504_i2c_write_byte(i2c, SM5504_MUIC_REG_INT_MASK2, INTMASK2_INIT);
if (ret < 0)
pr_err( "%s:%s: failed to write intmask2(%d)\n", MUIC_DEV_NAME, __func__, ret);
intmask2 = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_INT_MASK2);
pr_info("%s:%s:After: CTRL[0x%02x], INTMASK2[0x%02x]\n", MUIC_DEV_NAME, __func__, ctrl, intmask2);
/* W/A for VBUS detect time (300ms->140ms) */
reg_set = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_SET);
pr_info("%s:%s:SET Reg: [0x%02x]", MUIC_DEV_NAME, __func__, reg_set);
ret = sm5504_i2c_write_byte(i2c, SM5504_MUIC_REG_SET, VBUS_140MS);
reg_set = sm5504_i2c_read_byte(i2c, SM5504_MUIC_REG_SET);
pr_info(" -> [0x%02x]\n", reg_set);
return ret;
}
static int sm5504_muic_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = to_i2c_adapter(i2c->dev.parent);
struct sm5504_muic_data *muic_data;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
pr_err("%s:%s: i2c functionality check error\n", MUIC_DEV_NAME, __func__);
ret = -EIO;
goto err_return;
}
muic_data = kzalloc(sizeof(struct sm5504_muic_data), GFP_KERNEL);
if (!muic_data) {
pr_err("%s:%s: failed to allocate driver data\n", MUIC_DEV_NAME, __func__);
ret = -ENOMEM;
goto err_return;
}
/* save platfom data for gpio control functions */
muic_data->dev = &i2c->dev;
muic_data->i2c = i2c;
muic_data->pdata = &muic_pdata;
#if defined(CONFIG_OF)
ret = of_sm5504_muic_dt(&i2c->dev, muic_data);
if (ret < 0)
pr_err("%s:%s: no muic dt! ret[%d]\n", MUIC_DEV_NAME, __func__, ret);
#endif /* CONFIG_OF */
i2c_set_clientdata(i2c, muic_data);
if (muic_data->pdata->init_gpio_cb)
ret = muic_data->pdata->init_gpio_cb();
if (ret) {
pr_err("%s:%s: failed to init gpio(%d)\n", MUIC_DEV_NAME, __func__, ret);
goto fail_init_gpio;
}
mutex_init(&muic_data->muic_mutex);
muic_data->is_factory_start = false;
muic_data->attached_dev = ATTACHED_DEV_UNKNOWN_MUIC;
muic_data->is_usb_ready = false;
muic_data->is_otg_test = false;
muic_data->vbvolt = 0;
#ifdef CONFIG_SEC_SYSFS
/* create sysfs group */
ret = sysfs_create_group(&switch_device->kobj, &sm5504_muic_group);
if (ret) {
pr_err("%s:%s: failed to create sysfs\n", MUIC_DEV_NAME, __func__);
goto fail;
}
dev_set_drvdata(switch_device, muic_data);
#endif
if (muic_data->pdata->init_switch_dev_cb)
muic_data->pdata->init_switch_dev_cb();
ret = sm5504_muic_reg_init(muic_data);
if (ret) {
pr_err("%s:%s: failed to init reg\n", MUIC_DEV_NAME, __func__);
goto fail;
}
muic_data->is_rustproof = muic_data->pdata->rustproof_on;
muic_data->pdata->muic_set_path = sm5504_muic_set_path;
ret = sm5504_muic_irq_init(muic_data);
if (ret) {
pr_err("%s:%s: failed to init irq(%d)\n", MUIC_DEV_NAME, __func__, ret);
goto fail_init_irq;
}
wake_lock_init(&muic_data->muic_wake_lock, WAKE_LOCK_SUSPEND, "muic_wake");
/* initial cable detection */
sm5504_muic_irq_thread(-1, muic_data);
return 0;
fail_init_irq:
if (i2c->irq)
free_irq(i2c->irq, muic_data);
fail:
#ifdef CONFIG_SEC_SYSFS
sysfs_remove_group(&switch_device->kobj, &sm5504_muic_group);
#endif
mutex_destroy(&muic_data->muic_mutex);
fail_init_gpio:
i2c_set_clientdata(i2c, NULL);
kfree(muic_data);
err_return:
return ret;
}
static const struct i2c_device_id sm5504_i2c_id[] = {
{ "sm5504", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, sm5504_i2c_id);
#if defined(CONFIG_OF)
static struct of_device_id sec_muic_i2c_dt_ids[] = {
{ .compatible = "sm5504,i2c" },
{ }
};
MODULE_DEVICE_TABLE(of, sec_muic_i2c_dt_ids);
#endif /* CONFIG_OF */
static struct i2c_driver sm5504_muic_driver = {
.driver = {
.name = "sm5504",
.of_match_table = of_match_ptr(sec_muic_i2c_dt_ids),
},
.probe = sm5504_muic_probe,
/* TODO: suspend resume remove shutdown */
.id_table = sm5504_i2c_id,
};
static int __init sm5504_muic_init(void)
{
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
return i2c_add_driver(&sm5504_muic_driver);
}
module_init(sm5504_muic_init);
static void __exit sm5504_muic_exit(void)
{
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
i2c_del_driver(&sm5504_muic_driver);
}
module_exit(sm5504_muic_exit);
MODULE_DESCRIPTION("SM5504 MUIC driver");
MODULE_AUTHOR("Ji-Hun Kim <ji_hun.kim@samsung.com>");
MODULE_LICENSE("GPL");
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