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android_kernel_samsung_on5x.../drivers/muic/tsu6721-muic.c
awab228 f6dfaef42e Fixed MTP to work with TWRP
2018-06-19 23:16:04 +02:00

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/*
* driver/misc/tsu6721-muic.c - TSU6721 micro USB switch device driver
*
* Copyright (C) 2010 Samsung Electronics
* Seung-Jin Hahn <sjin.hahn@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/gpio.h>
#include <linux/of_gpio.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/delay.h>
/*
#include <plat/udc-hs.h>
*/
#include <linux/muic/muic.h>
#include <linux/muic/tsu6721.h>
#if defined(CONFIG_MUIC_NOTIFIER)
#include <linux/muic/muic_notifier.h>
#endif /* CONFIG_MUIC_NOTIFIER */
#define GPIO_LEVEL_HIGH 1
#define GPIO_LEVEL_LOW 0
/*
extern struct sec_switch_data sec_switch_data;
*/
static ssize_t tsu6721_muic_show_uart_sel(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tsu6721_muic_data *muic_data = dev_get_drvdata(dev);
struct muic_platform_data *pdata = muic_data->pdata;
switch (pdata->uart_path) {
case MUIC_PATH_UART_AP:
pr_info("%s:%s AP\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "AP\n");
case MUIC_PATH_UART_CP:
pr_info("%s:%s CP\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "CP\n");
default:
break;
}
pr_info("%s:%s UNKNOWN\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "UNKNOWN\n");
}
/* declare muic uart path control function prototype. */
static int switch_to_ap_uart(struct tsu6721_muic_data *muic_data);
static int switch_to_cp_uart(struct tsu6721_muic_data *muic_data);
static int tsu6721_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:i2c err on reading reg(0x%x), retrying ...\n",
__func__, command);
if (retry > 10) {
pr_err("%s: retry count > 10 : failed !!\n", __func__);
break;
}
msleep(100);
ret = i2c_smbus_read_byte_data(client, command);
retry++;
}
return ret;
}
static int tsu6721_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) {
written = i2c_smbus_read_byte_data(client, command);
if (written < 0)
pr_err("%s:i2c err on reading reg(0x%x)\n",
__func__, command);
msleep(100);
ret = i2c_smbus_write_byte_data(client, command, value);
retry++;
}
return ret;
}
static void tsu6721_disable_interrupt(struct tsu6721_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
int value, ret;
value = tsu6721_i2c_read_byte(i2c, TSU6721_MUIC_REG_CTRL);
if (value < 0) {
dev_err(&i2c->dev, "%s: read err %d\n", __func__, value);
return;
}
value |= CTRL_INT_MASK_MASK;
ret = tsu6721_i2c_write_byte(i2c, TSU6721_MUIC_REG_CTRL, value);
if (ret < 0)
dev_err(&i2c->dev, "%s: err %d\n", __func__, ret);
}
static void tsu6721_enable_interrupt(struct tsu6721_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
int value, ret;
value = tsu6721_i2c_read_byte(i2c, TSU6721_MUIC_REG_CTRL);
if (value < 0) {
dev_err(&i2c->dev, "%s: read err %d\n", __func__, value);
return;
}
value &= (~CTRL_INT_MASK_MASK);
ret = tsu6721_i2c_write_byte(i2c, TSU6721_MUIC_REG_CTRL, value);
if (ret < 0)
dev_err(&i2c->dev, "%s: err %d\n", __func__, ret);
if (ret == -ENXIO)
dev_err(&i2c->dev, "No such device or address\n");
}
static ssize_t tsu6721_muic_set_uart_sel(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct tsu6721_muic_data *muic_data = dev_get_drvdata(dev);
struct muic_platform_data *pdata = muic_data->pdata;
if (!strncasecmp(buf, "AP", 2)) {
pdata->uart_path = MUIC_PATH_UART_AP;
switch_to_ap_uart(muic_data);
} else if (!strncasecmp(buf, "CP", 2)) {
pdata->uart_path = MUIC_PATH_UART_CP;
switch_to_cp_uart(muic_data);
} else {
pr_warn("%s:%s invalid value\n", MUIC_DEV_NAME, __func__);
}
pr_info("%s:%s uart_path(%d)\n", MUIC_DEV_NAME, __func__,
pdata->uart_path);
return count;
}
static ssize_t tsu6721_muic_show_usb_sel(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tsu6721_muic_data *muic_data = dev_get_drvdata(dev);
struct muic_platform_data *pdata = muic_data->pdata;
switch (pdata->usb_path) {
case MUIC_PATH_USB_AP:
pr_info("%s:%s PDA\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "PDA\n");
case MUIC_PATH_USB_CP:
pr_info("%s:%s MODEM\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "MODEM\n");
default:
break;
}
pr_info("%s:%s UNKNOWN\n", MUIC_DEV_NAME, __func__);
return sprintf(buf, "UNKNOWN\n");
}
static ssize_t tsu6721_muic_set_usb_sel(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct tsu6721_muic_data *muic_data = dev_get_drvdata(dev);
struct muic_platform_data *pdata = muic_data->pdata;
if (!strncasecmp(buf, "PDA", 3))
pdata->usb_path = MUIC_PATH_USB_AP;
else if (!strncasecmp(buf, "MODEM", 5))
pdata->usb_path = MUIC_PATH_USB_CP;
else
pr_warn("%s:%s invalid value\n", MUIC_DEV_NAME, __func__);
pr_info("%s:%s usb_path(%d)\n", MUIC_DEV_NAME, __func__,
pdata->usb_path);
return count;
}
static ssize_t tsu6721_muic_show_adc(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct tsu6721_muic_data *muic_data = dev_get_drvdata(dev);
int ret;
ret = i2c_smbus_read_byte_data(muic_data->i2c, TSU6721_MUIC_REG_ADC);
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_ADC_MASK));
}
static ssize_t tsu6721_muic_show_usb_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tsu6721_muic_data *muic_data = dev_get_drvdata(dev);
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;
}
#if defined(CONFIG_USB_HOST_NOTIFY)
static ssize_t tsu6721_muic_show_otg_test(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return 0;
}
static ssize_t tsu6721_muic_set_otg_test(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return 0;
}
#endif
static ssize_t tsu6721_muic_show_attached_dev(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tsu6721_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:
return sprintf(buf, "DESKDOCK\n");
default:
break;
}
return sprintf(buf, "UNKNOWN\n");
}
static ssize_t tsu6721_muic_show_audio_path(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return 0;
}
static ssize_t tsu6721_muic_set_audio_path(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return 0;
}
static ssize_t tsu6721_muic_show_apo_factory(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tsu6721_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 apo factory=%s\n", MUIC_DEV_NAME, __func__, mode);
return sprintf(buf, "%s\n", mode);
}
static ssize_t tsu6721_muic_set_apo_factory(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct tsu6721_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_warn("%s:%s Wrong command\n", MUIC_DEV_NAME, __func__);
return count;
}
pr_info("%s:%s apo factory=%s\n", MUIC_DEV_NAME, __func__, mode);
return count;
}
static DEVICE_ATTR(uart_sel, 0664, tsu6721_muic_show_uart_sel,
tsu6721_muic_set_uart_sel);
static DEVICE_ATTR(usb_sel, 0664,
tsu6721_muic_show_usb_sel, tsu6721_muic_set_usb_sel);
static DEVICE_ATTR(adc, 0664, tsu6721_muic_show_adc, NULL);
static DEVICE_ATTR(usb_state, 0664, tsu6721_muic_show_usb_state, NULL);
#if defined(CONFIG_USB_HOST_NOTIFY)
static DEVICE_ATTR(otg_test, 0664,
tsu6721_muic_show_otg_test, tsu6721_muic_set_otg_test);
#endif
static DEVICE_ATTR(attached_dev, 0664, tsu6721_muic_show_attached_dev, NULL);
static DEVICE_ATTR(audio_path, 0664,
tsu6721_muic_show_audio_path, tsu6721_muic_set_audio_path);
static DEVICE_ATTR(apo_factory, 0664,
tsu6721_muic_show_apo_factory,
tsu6721_muic_set_apo_factory);
static struct attribute *tsu6721_muic_attributes[] = {
&dev_attr_uart_sel.attr,
&dev_attr_usb_sel.attr,
&dev_attr_adc.attr,
&dev_attr_usb_state.attr,
#if defined(CONFIG_USB_HOST_NOTIFY)
&dev_attr_otg_test.attr,
#endif
&dev_attr_attached_dev.attr,
&dev_attr_audio_path.attr,
&dev_attr_apo_factory.attr,
NULL
};
static const struct attribute_group tsu6721_muic_group = {
.attrs = tsu6721_muic_attributes,
};
static int tsu6721_set_gpio_uart_sel(int uart_sel)
{
const char *mode;
int uart_sel_gpio = muic_pdata.gpio_uart_sel;
int uart_sel_val;
int ret;
ret = gpio_request(uart_sel_gpio, "GPIO_UART_SEL");
if (ret) {
pr_err("failed to gpio_request GPIO_UART_SEL\n");
return ret;
}
uart_sel_val = gpio_get_value(uart_sel_gpio);
pr_info("%s: uart_sel(%d), GPIO_UART_SEL(%d)=%c ->", __func__, uart_sel,
uart_sel_gpio, (uart_sel_val == 0 ? 'L' : 'H'));
/*
* AP/CP UART Switch
* How to control gpio for High & Low depends on schematics.
* therefore, you need to check schematics &
* switch module's datasheet
*/
switch (uart_sel) {
case MUIC_PATH_UART_AP:
mode = "AP_UART";
if (gpio_is_valid(uart_sel_gpio))
gpio_direction_output(uart_sel_gpio, GPIO_LEVEL_LOW);
break;
case MUIC_PATH_UART_CP:
mode = "CP_UART";
if (gpio_is_valid(uart_sel_gpio))
gpio_direction_output(uart_sel_gpio, GPIO_LEVEL_HIGH);
break;
default:
mode = "Error";
break;
}
uart_sel_val = gpio_get_value(uart_sel_gpio);
gpio_free(uart_sel_gpio);
pr_info(" %s, GPIO_UART_SEL(%d)=%c\n", mode, uart_sel_gpio,
(uart_sel_val == 0 ? 'L' : 'H'));
return 0;
}
static int set_ctrl_reg(struct tsu6721_muic_data *muic_data, int shift, bool on)
{
struct i2c_client *i2c = muic_data->i2c;
u8 reg_val;
int ret = 0;
ret = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_CTRL);
if (ret < 0)
pr_err("%s:%s err read CTRL(%d)\n", MUIC_DEV_NAME, __func__,
ret);
ret &= CTRL_MASK;
if (on)
reg_val = ret | (0x1 << shift);
else
reg_val = ret & ~(0x1 << shift);
if (reg_val ^ ret) {
pr_info("%s:%s reg_val(0x%x)!=CTRL reg(0x%x), update reg\n",
MUIC_DEV_NAME, __func__, reg_val, ret);
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_CTRL,
reg_val);
if (ret < 0)
pr_err("%s:%s err write CTRL(%d)\n", MUIC_DEV_NAME,
__func__, ret);
} else {
pr_info("%s:%s reg_val(0x%x)==CTRL reg(0x%x), just return\n",
MUIC_DEV_NAME, __func__, reg_val, ret);
return 0;
}
ret = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_CTRL);
if (ret < 0)
pr_err("%s:%s err read CTRL(%d)\n", MUIC_DEV_NAME, __func__,
ret);
else
pr_info("%s:%s CTRL reg after change(0x%x)\n", MUIC_DEV_NAME,
__func__, ret);
return ret;
}
static int set_int_mask(struct tsu6721_muic_data *muic_data, bool on)
{
int shift = CTRL_INT_MASK_SHIFT;
int ret = 0;
ret = set_ctrl_reg(muic_data, shift, on);
return ret;
}
#if 0
static int set_raw_data(struct tsu6721_muic_data *muic_data, bool on)
{
int shift = CTRL_RAW_DATA_SHIFT;
int ret = 0;
ret = set_ctrl_reg(muic_data, shift, on);
return ret;
}
#endif
static int set_manual_sw(struct tsu6721_muic_data *muic_data, bool on)
{
int shift = CTRL_MANUAL_SW_SHIFT;
int ret = 0;
ret = set_ctrl_reg(muic_data, shift, on);
return ret;
}
static int set_com_sw(struct tsu6721_muic_data *muic_data,
enum tsu6721_reg_manual_sw1_value reg_val)
{
struct i2c_client *i2c = muic_data->i2c;
int ret = 0;
u8 temp = 0;
temp = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_MANSW1);
if (temp < 0)
pr_err("%s:%s err read MANSW1(%d)\n", MUIC_DEV_NAME, __func__,
temp);
if (reg_val ^ temp) {
pr_info("%s:%s reg_val(0x%x)!=MANSW1 reg(0x%x), update reg\n",
MUIC_DEV_NAME, __func__, reg_val, temp);
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_MANSW1,
reg_val);
if (ret < 0)
pr_err("%s:%s err write MANSW1(%d)\n", MUIC_DEV_NAME,
__func__, reg_val);
} else {
pr_info("%s:%s MANSW1 reg(0x%x), just return\n",
MUIC_DEV_NAME, __func__, reg_val);
return 0;
}
temp = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_MANSW1);
if (temp < 0)
pr_err("%s:%s err read MANSW1(%d)\n", MUIC_DEV_NAME, __func__,
temp);
if (temp ^ reg_val) {
pr_err("%s:%s err set MANSW1(0x%x)\n", MUIC_DEV_NAME, __func__,
temp);
ret = -EAGAIN;
}
return ret;
}
static int set_com_sw2(struct tsu6721_muic_data *muic_data,
enum tsu6721_reg_manual_sw2_value reg_val)
{
struct i2c_client *i2c = muic_data->i2c;
int ret = 0;
u8 temp = 0;
temp = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_MANSW2);
if (temp < 0)
pr_err("%s:%s err read MANSW2(%d)\n", MUIC_DEV_NAME, __func__,
temp);
if (reg_val ^ temp) {
pr_info("%s:%s reg_val(0x%x)!=MANSW2 reg(0x%x), update reg\n",
MUIC_DEV_NAME, __func__, reg_val, temp);
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_MANSW2,
reg_val);
if (ret < 0)
pr_err("%s:%s err write MANSW2(%d)\n", MUIC_DEV_NAME,
__func__, reg_val);
} else {
pr_info("%s:%s MANSW2 reg(0x%x), just return\n",
MUIC_DEV_NAME, __func__, reg_val);
return 0;
}
temp = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_MANSW2);
if (temp < 0)
pr_err("%s:%s err read MANSW2(%d)\n", MUIC_DEV_NAME, __func__,
temp);
if (temp ^ reg_val) {
pr_err("%s:%s err set MANSW2(0x%x)\n", MUIC_DEV_NAME, __func__,
temp);
ret = -EAGAIN;
}
return ret;
}
/*
* ISET is an open drain output.
* 0 : Low(ISET OFF) -> it is released to pull-up registor.
* Therefore, output signal is high.
* It is regarded as USB mode for Battery Charger.
* 1 : High(ISET ON) -> it drives to low, therfore, output signal is low.
* Then, it is regarded as TA mode for Battery Charger
*/
static int com_to_iset(struct tsu6721_muic_data *muic_data, bool is_on)
{
enum tsu6721_reg_manual_sw2_value reg_val;
int ret = 0;
if (is_on)
reg_val = MANSW2_CHARGER_ON;
else
reg_val = MANSW2_CHARGER_OFF;
ret = set_com_sw2(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_open(struct tsu6721_muic_data *muic_data)
{
enum tsu6721_reg_manual_sw1_value reg_val;
int ret = 0;
reg_val = MANSW1_OPEN;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s set_com_sw err\n", MUIC_DEV_NAME, __func__);
set_manual_sw(muic_data, false);
return ret;
}
static int com_to_open_with_vbus(struct tsu6721_muic_data *muic_data)
{
enum tsu6721_reg_manual_sw1_value reg_val;
int ret = 0;
reg_val = MANSW1_OPEN_WITH_V_BUS;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s set_com_sw err\n", MUIC_DEV_NAME, __func__);
set_manual_sw(muic_data, false);
return ret;
}
static int com_to_usb(struct tsu6721_muic_data *muic_data)
{
enum tsu6721_reg_manual_sw1_value reg_val;
int ret = 0;
reg_val = MANSW1_USB;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s set_com_usb err\n", MUIC_DEV_NAME, __func__);
set_manual_sw(muic_data, false);
return ret;
}
static int com_to_uart(struct tsu6721_muic_data *muic_data)
{
enum tsu6721_reg_manual_sw1_value reg_val;
int ret = 0;
reg_val = MANSW1_UART;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s set_com_uart err\n", MUIC_DEV_NAME, __func__);
set_manual_sw(muic_data, false);
return ret;
}
#if 0
static int com_to_audio(struct tsu6721_muic_data *muic_data)
{
enum tsu6721_reg_manual_sw1_value reg_val;
int ret = 0;
reg_val = MANSW1_AUDIO;
ret = set_com_sw(muic_data, reg_val);
if (ret)
pr_err("%s:%s set_com_audio err\n", MUIC_DEV_NAME, __func__);
set_manual_sw(muic_data, false);
return ret;
}
#endif
static int switch_to_ap_usb(struct tsu6721_muic_data *muic_data)
{
struct muic_platform_data *pdata = muic_data->pdata;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (pdata->set_gpio_usb_sel)
pdata->set_gpio_usb_sel(MUIC_PATH_USB_AP);
ret = com_to_usb(muic_data);
if (ret) {
pr_err("%s:%s com->usb set err\n", MUIC_DEV_NAME, __func__);
return ret;
}
return ret;
}
static int switch_to_cp_usb(struct tsu6721_muic_data *muic_data)
{
struct muic_platform_data *pdata = muic_data->pdata;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (pdata->set_gpio_usb_sel)
pdata->set_gpio_usb_sel(MUIC_PATH_USB_CP);
ret = com_to_usb(muic_data);
if (ret) {
pr_err("%s:%s com->usb set err\n", MUIC_DEV_NAME, __func__);
return ret;
}
return ret;
}
static int switch_to_ap_uart(struct tsu6721_muic_data *muic_data)
{
struct muic_platform_data *pdata = muic_data->pdata;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (pdata->set_gpio_uart_sel)
pdata->set_gpio_uart_sel(MUIC_PATH_UART_AP);
ret = com_to_uart(muic_data);
if (ret) {
pr_err("%s:%s com->uart set err\n", MUIC_DEV_NAME, __func__);
return ret;
}
return ret;
}
static int switch_to_cp_uart(struct tsu6721_muic_data *muic_data)
{
struct muic_platform_data *pdata = muic_data->pdata;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (pdata->set_gpio_uart_sel)
pdata->set_gpio_uart_sel(MUIC_PATH_UART_CP);
ret = com_to_uart(muic_data);
if (ret) {
pr_err("%s:%s com->uart set err\n", MUIC_DEV_NAME, __func__);
return ret;
}
return ret;
}
static int attach_charger(struct tsu6721_muic_data *muic_data,
muic_attached_dev_t new_dev)
{
int ret = 0;
pr_info("%s:%s new_dev(%d)\n", MUIC_DEV_NAME, __func__, new_dev);
/*
if (!muic_data->switch_data->charger_cb) {
pr_err("%s:%s charger_cb is NULL\n", MUIC_DEV_NAME, __func__);
return -ENXIO;
}
*/
if (muic_data->attached_dev == new_dev) {
pr_info("%s:%s already, ignore.\n", MUIC_DEV_NAME, __func__);
return ret;
}
/*
ret = muic_data->switch_data->charger_cb(new_dev);
if (ret) {
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
pr_err("%s:%s charger_cb(%d) err\n", MUIC_DEV_NAME, __func__,
ret);
}
*/
muic_data->attached_dev = new_dev;
return ret;
}
static int detach_charger(struct tsu6721_muic_data *muic_data)
{
/*
struct sec_switch_data *switch_data = muic_data->switch_data;
*/
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
/*
if (!switch_data->charger_cb) {
pr_err("%s:%s charger_cb is NULL\n", MUIC_DEV_NAME, __func__);
return -ENXIO;
}
ret = switch_data->charger_cb(ATTACHED_DEV_NONE_MUIC);
if (ret) {
pr_err("%s:%s charger_cb(%d) err\n", MUIC_DEV_NAME, __func__,
ret);
return ret;
}
*/
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
return ret;
}
static int attach_usb_util(struct tsu6721_muic_data *muic_data,
muic_attached_dev_t new_dev)
{
int ret = 0;
ret = attach_charger(muic_data, new_dev);
if (ret)
return ret;
if (muic_data->pdata->usb_path == MUIC_PATH_USB_CP) {
ret = switch_to_cp_usb(muic_data);
return ret;
}
ret = switch_to_ap_usb(muic_data);
return ret;
}
static int attach_usb(struct tsu6721_muic_data *muic_data,
muic_attached_dev_t new_dev)
{
/*
struct muic_platform_data *pdata = muic_data->pdata;
struct sec_switch_data *switch_data = muic_data->switch_data;
*/
int ret = 0;
if (muic_data->attached_dev == new_dev) {
pr_info("%s:%s duplicated(USB)\n", MUIC_DEV_NAME, __func__);
return ret;
}
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
ret = attach_usb_util(muic_data, new_dev);
if (ret)
return ret;
/*
if ((pdata->usb_path == MUIC_PATH_USB_AP) &&
(switch_data->usb_cb) && (muic_data->is_usb_ready))
switch_data->usb_cb(USB_CABLE_ATTACHED);
*/
return ret;
}
static int detach_usb(struct tsu6721_muic_data *muic_data)
{
struct muic_platform_data *pdata = muic_data->pdata;
/*
struct sec_switch_data *switch_data = muic_data->switch_data;
*/
int ret = 0;
pr_info("%s:%s attached_dev type(%d)\n", MUIC_DEV_NAME, __func__,
muic_data->attached_dev);
ret = detach_charger(muic_data);
if (ret)
return ret;
ret = com_to_open(muic_data);
if (ret)
return ret;
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
if (pdata->usb_path == MUIC_PATH_USB_CP)
return ret;
/*
if ((pdata->usb_path == MUIC_PATH_USB_AP) &&
(switch_data->usb_cb) && (muic_data->is_usb_ready))
switch_data->usb_cb(USB_CABLE_DETACHED);
*/
return ret;
}
static int attach_jig_uart_boot_off(struct tsu6721_muic_data *muic_data,
u8 vbvolt)
{
struct muic_platform_data *pdata = muic_data->pdata;
muic_attached_dev_t new_dev;
int ret = 0;
pr_info("%s:%s JIG UART BOOT-OFF(0x%x)\n", MUIC_DEV_NAME, __func__,
vbvolt);
if (pdata->uart_path == MUIC_PATH_UART_AP)
ret = switch_to_ap_uart(muic_data);
else
ret = switch_to_cp_uart(muic_data);
if (vbvolt)
new_dev = ATTACHED_DEV_JIG_UART_OFF_VB_MUIC;
else
new_dev = ATTACHED_DEV_JIG_UART_OFF_MUIC;
ret = attach_charger(muic_data, new_dev);
return ret;
}
static int detach_jig_uart_boot_off(struct tsu6721_muic_data *muic_data)
{
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
ret = detach_charger(muic_data);
if (ret)
pr_err("%s:%s err detach_charger(%d)\n", MUIC_DEV_NAME,
__func__, ret);
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
return ret;
}
static int attach_jig_usb_boot_off(struct tsu6721_muic_data *muic_data,
u8 vbvolt)
{
/*
struct muic_platform_data *pdata = muic_data->pdata;
struct sec_switch_data *switch_data = muic_data->switch_data;
*/
int ret = 0;
if (!vbvolt)
return ret;
if (muic_data->attached_dev == ATTACHED_DEV_JIG_USB_OFF_MUIC) {
pr_info("%s:%s duplicated(JIG USB OFF)\n", MUIC_DEV_NAME,
__func__);
return ret;
}
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
ret = attach_usb_util(muic_data, ATTACHED_DEV_JIG_USB_OFF_MUIC);
if (ret)
return ret;
/*
if ((pdata->usb_path == MUIC_PATH_USB_AP) &&
(switch_data->usb_cb) && (muic_data->is_usb_ready))
switch_data->usb_cb(USB_CABLE_ATTACHED);
*/
return ret;
}
static int attach_jig_usb_boot_on(struct tsu6721_muic_data *muic_data,
u8 vbvolt)
{
/*
struct muic_platform_data *pdata = muic_data->pdata;
struct sec_switch_data *switch_data = muic_data->switch_data;
*/
int ret = 0;
if (!vbvolt)
return ret;
if (muic_data->attached_dev == ATTACHED_DEV_JIG_USB_ON_MUIC) {
pr_info("%s:%s duplicated(JIG USB ON)\n", MUIC_DEV_NAME,
__func__);
return ret;
}
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
ret = attach_usb_util(muic_data, ATTACHED_DEV_JIG_USB_ON_MUIC);
if (ret)
return ret;
/*
if ((pdata->usb_path == MUIC_PATH_USB_AP) &&
(switch_data->usb_cb) && (muic_data->is_usb_ready))
switch_data->usb_cb(USB_CABLE_ATTACHED);
*/
return ret;
}
static void tsu6721_muic_handle_attach(struct tsu6721_muic_data *muic_data,
muic_attached_dev_t new_dev, int adc, u8 vbvolt)
{
int ret;
bool noti = true;
pr_info("%s:attached_dev[%d] %s\n", __func__,
muic_data->attached_dev, MUIC_DEV_NAME);
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:
if (new_dev != muic_data->attached_dev) {
pr_warn("%s:%s new(%d)!=attached(%d), assume detach\n",
MUIC_DEV_NAME, __func__, new_dev,
muic_data->attached_dev);
ret = detach_usb(muic_data);
}
break;
case ATTACHED_DEV_OTG_MUIC:
if (new_dev != muic_data->attached_dev) {
pr_warn("%s:%s new(%d)!=attached(%d), assume detach\n",
MUIC_DEV_NAME, __func__, new_dev,
muic_data->attached_dev);
ret = detach_usb(muic_data);
}
break;
case ATTACHED_DEV_TA_MUIC:
if (new_dev != muic_data->attached_dev) {
pr_warn("%s:%s new(%d)!=attached(%d), assume detach\n",
MUIC_DEV_NAME, __func__, new_dev,
muic_data->attached_dev);
ret = detach_charger(muic_data);
}
break;
case ATTACHED_DEV_JIG_UART_OFF_VB_MUIC:
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
if (new_dev != muic_data->attached_dev) {
pr_warn("%s:%s new(%d)!=attached(%d), assume detach\n",
MUIC_DEV_NAME, __func__, new_dev,
muic_data->attached_dev);
if ((muic_data->attached_dev ==
ATTACHED_DEV_JIG_UART_OFF_VB_MUIC) &&
new_dev == ATTACHED_DEV_JIG_UART_OFF_MUIC) {
if (vbvolt == DEV_TYPE3_VBVOLT)
break;
}
ret = detach_jig_uart_boot_off(muic_data);
}
break;
default:
noti = false;
break;
}
#if defined(CONFIG_MUIC_NOTIFIER)
if (noti)
muic_notifier_detach_attached_dev(muic_data->attached_dev);
#endif /* CONFIG_MUIC_NOTIFIER */
noti = true;
switch (new_dev) {
case ATTACHED_DEV_USB_MUIC:
case ATTACHED_DEV_CDP_MUIC:
ret = attach_usb(muic_data, new_dev);
break;
case ATTACHED_DEV_OTG_MUIC:
ret = attach_usb(muic_data, new_dev);
break;
case ATTACHED_DEV_TA_MUIC:
ret = com_to_iset(muic_data, true);
ret = com_to_open_with_vbus(muic_data);
ret = attach_charger(muic_data, new_dev);
break;
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
ret = attach_jig_uart_boot_off(muic_data, vbvolt);
break;
case ATTACHED_DEV_JIG_USB_OFF_MUIC:
ret = attach_jig_usb_boot_off(muic_data, vbvolt);
break;
case ATTACHED_DEV_JIG_USB_ON_MUIC:
ret = attach_jig_usb_boot_on(muic_data, vbvolt);
break;
default:
noti = false;
pr_warn("%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_warn("%s:%s something wrong with attaching %d (ERR=%d)\n",
MUIC_DEV_NAME, __func__, new_dev, ret);
#if defined(CONFIG_MUIC_NOTIFIER)
if (noti)
muic_notifier_attach_attached_dev(new_dev);
#endif /* CONFIG_MUIC_NOTIFIER */
}
static void tsu6721_muic_handle_detach(struct tsu6721_muic_data *muic_data)
{
int ret;
bool noti = true;
ret = com_to_open(muic_data);
switch (muic_data->attached_dev) {
case ATTACHED_DEV_JIG_USB_OFF_MUIC:
case ATTACHED_DEV_JIG_USB_ON_MUIC:
case ATTACHED_DEV_USB_MUIC:
case ATTACHED_DEV_CDP_MUIC:
ret = detach_usb(muic_data);
break;
case ATTACHED_DEV_OTG_MUIC:
ret = detach_usb(muic_data);
break;
case ATTACHED_DEV_TA_MUIC:
ret = com_to_iset(muic_data, false);
ret = detach_charger(muic_data);
break;
case ATTACHED_DEV_JIG_UART_OFF_VB_MUIC:
case ATTACHED_DEV_JIG_UART_OFF_MUIC:
ret = detach_jig_uart_boot_off(muic_data);
break;
case ATTACHED_DEV_NONE_MUIC:
pr_info("%s:%s duplicated(NONE)\n", MUIC_DEV_NAME, __func__);
break;
case ATTACHED_DEV_UNKNOWN_MUIC:
case ATTACHED_DEV_UNKNOWN_VB_MUIC:
pr_info("%s:%s UNKNOWN\n", MUIC_DEV_NAME, __func__);
ret = detach_charger(muic_data);
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
break;
default:
pr_info("%s:%s invalid attached_dev type(%d)\n", MUIC_DEV_NAME,
__func__, muic_data->attached_dev);
muic_data->attached_dev = ATTACHED_DEV_NONE_MUIC;
break;
}
if (ret)
pr_warn("%s:%s something wrong with detaching %d (ERR=%d)\n",
MUIC_DEV_NAME, __func__, muic_data->attached_dev, ret);
#if defined(CONFIG_MUIC_NOTIFIER)
if (noti)
muic_notifier_detach_attached_dev(muic_data->attached_dev);
#endif /* CONFIG_MUIC_NOTIFIER */
}
static void tsu6721_muic_detect_dev(struct tsu6721_muic_data *muic_data)
{
/*
struct sec_switch_data *switch_data = muic_data->switch_data;
*/
struct i2c_client *i2c = muic_data->i2c;
muic_attached_dev_t new_dev = ATTACHED_DEV_UNKNOWN_MUIC;
int intr = MUIC_INTR_DETACH;
int vbvolt = 0;
int val1, val2, val3, adc;
/*
if(switch_data->filter_vps_cb)
switch_data->filter_vps_cb(muic_data);
*/
val1 = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_DEV_T1);
if (val1 < 0)
pr_err("%s:%s err %d\n", MUIC_DEV_NAME, __func__, val1);
val2 = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_DEV_T2);
if (val2 < 0)
pr_err("%s:%s err %d\n", MUIC_DEV_NAME, __func__, val2);
val3 = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_DEV_T3);
if (val3 < 0)
pr_err("%s:%s err %d\n", MUIC_DEV_NAME, __func__, val3);
else
vbvolt = (val3 & DEV_TYPE3_VBVOLT);
adc = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_ADC);
pr_info("%s:%s dev[1:0x%x, 2:0x%x, 3:0x%x], adc:0x%x, vbvolt:0x%x\n",
MUIC_DEV_NAME, __func__, val1, val2, val3, adc, vbvolt);
/* Attached */
switch (val1) {
case DEV_TYPE1_CDP:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_CDP_MUIC;
pr_info("%s : USB_CDP DETECTED\n", MUIC_DEV_NAME);
break;
case DEV_TYPE1_USB:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_USB_MUIC;
pr_info("%s : USB DETECTED\n", MUIC_DEV_NAME);
break;
case DEV_TYPE1_DEDICATED_CHG:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_TA_MUIC;
pr_info("%s : DEDICATED CHARGER DETECTED\n", MUIC_DEV_NAME);
break;
case DEV_TYPE1_USB_OTG:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_OTG_MUIC;
pr_info("%s : USB_OTG DETECTED\n", MUIC_DEV_NAME);
break;
default:
break;
}
switch (val2) {
case DEV_TYPE2_JIG_UART_OFF:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_UART_OFF_MUIC;
break;
case DEV_TYPE2_JIG_USB_OFF:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_USB_OFF_MUIC;
break;
case DEV_TYPE2_JIG_USB_ON:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_USB_ON_MUIC;
break;
default:
break;
}
if (val3 & DEV_TYPE3_CHG_TYPE) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_TA_MUIC;
}
switch (adc) {
case ADC_AUDIOMODE_W_REMOTE: /* 0x11110 1M ohm */
case ADC_UART_CABLE: /* 150k ohm */
case ADC_SEND_END ... ADC_REMOTE_S12:
pr_info("%s:%s undefined ADC(0x%02x)\n", MUIC_DEV_NAME,
__func__, adc);
if (vbvolt) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_UNKNOWN_VB_MUIC;
pr_info("%s : UNDEFINED VB DETECTED\n", MUIC_DEV_NAME);
} else
intr = MUIC_INTR_DETACH;
break;
case ADC_RESERVED_VZW ... (ADC_UART_CABLE-1):
pr_warn("%s:%s unsupported ADC(0x%02x)\n", MUIC_DEV_NAME,
__func__, adc);
intr = MUIC_INTR_DETACH;
break;
case ADC_CEA936ATYPE1_CHG: /*200k ohm */
#ifdef CONFIG_MUIC_TSU6721_200K_USB
intr = MUIC_INTR_ATTACH;
/* This is workaournd for LG USB cable which has 219k ohm ID */
new_dev = ATTACHED_DEV_USB_MUIC;
pr_info("%s : TYPE1 CHARGER DETECTED(USB)\n", MUIC_DEV_NAME);
break;
#endif
case ADC_CEA936ATYPE2_CHG:
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_TA_MUIC;
pr_info("%s : TYPE1/2 CHARGER DETECTED(TA)\n", MUIC_DEV_NAME);
break;
case ADC_JIG_USB_OFF: /* 255k */
if (new_dev != ATTACHED_DEV_JIG_USB_OFF_MUIC) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_USB_OFF_MUIC;
}
break;
case ADC_JIG_USB_ON:
if (new_dev != ATTACHED_DEV_JIG_USB_ON_MUIC) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_USB_ON_MUIC;
}
break;
case ADC_JIG_UART_OFF:
if (new_dev != ATTACHED_DEV_JIG_UART_OFF_MUIC) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_UART_OFF_MUIC;
}
break;
case ADC_JIG_UART_ON:
/* This is the mode to wake up device during factory mode. */
if (new_dev != ATTACHED_DEV_JIG_UART_ON_MUIC
&& muic_data->is_factory_start) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_JIG_UART_ON_MUIC;
}
break;
case ADC_OPEN:
/* sometimes muic fails to catch JIG_UART_OFF detaching */
/* double check with ADC */
if (new_dev == ATTACHED_DEV_JIG_UART_OFF_MUIC) {
new_dev = ATTACHED_DEV_UNKNOWN_MUIC;
intr = MUIC_INTR_DETACH;
}
break;
default:
break;
}
if (val2 & DEV_TYPE2_AV || val3 & DEV_TYPE3_AV_WITH_VBUS) {
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_DESKDOCK_MUIC;
}
/* WorkAround for CDP and old 2A Charger */
if (val1 == 0 && val2 == 0 && val3 == 0x02 && adc == ADC_OPEN) {
int cdp_val1, cdp_val3, cdp_vbvolt = 0 , cdp_adc;
/* in case of CDP, at least wait for 10ms */
msleep(20);
cdp_val1 = i2c_smbus_read_byte_data(i2c,
TSU6721_MUIC_REG_DEV_T1);
if (cdp_val1 < 0)
pr_err("%s:%s err %d\n", MUIC_DEV_NAME, __func__,
cdp_val1);
cdp_val3 = i2c_smbus_read_byte_data(i2c,
TSU6721_MUIC_REG_DEV_T3);
if (cdp_val3 < 0)
pr_err("%s:%s err %d\n", MUIC_DEV_NAME, __func__,
cdp_val3);
else
cdp_vbvolt = (cdp_val3 & DEV_TYPE3_VBVOLT);
cdp_adc = i2c_smbus_read_byte_data(i2c,
TSU6721_MUIC_REG_ADC);
pr_info("%s:%s CDP check dev[1:0x%x, 3:0x%x], adc:0x%x, vbvolt:0x%x\n",
MUIC_DEV_NAME, __func__, cdp_val1, cdp_val3,
cdp_adc, cdp_vbvolt);
if (cdp_val1 == DEV_TYPE1_CDP) {
pr_info("%s:%s DEV_TYPE1_CDP cdp_val1=0x%x cdp_val3=0x%x\n",
MUIC_DEV_NAME, __func__, cdp_val1,
cdp_val3);
intr = MUIC_INTR_ATTACH;
new_dev = ATTACHED_DEV_CDP_MUIC;
adc = cdp_adc;
vbvolt = cdp_vbvolt;
}
}
/* WorkAround for ghost_usb_attach after detaching DESKDOCK */
/* USB without VBUS is not possible */
if (new_dev == ATTACHED_DEV_USB_MUIC && !vbvolt) {
new_dev = ATTACHED_DEV_UNKNOWN_MUIC;
intr = MUIC_INTR_DETACH;
}
if (intr == MUIC_INTR_ATTACH)
tsu6721_muic_handle_attach(muic_data, new_dev, adc, vbvolt);
else
tsu6721_muic_handle_detach(muic_data);
}
static irqreturn_t tsu6721_muic_irq_thread(int irq, void *data)
{
struct tsu6721_muic_data *muic_data = data;
struct i2c_client *i2c = muic_data->i2c;
int intr1, intr2;
pr_info("%s:%s irq(%d)\n", MUIC_DEV_NAME, __func__, irq);
mutex_lock(&muic_data->muic_mutex);
tsu6721_disable_interrupt(muic_data);
/* read and clear interrupt status bits */
intr1 = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_INT1);
intr2 = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_INT2);
if ((intr1 < 0) || (intr2 < 0)) {
pr_err("%s: err read interrupt status [1:0x%x, 2:0x%x]\n",
__func__, intr1, intr2);
goto skip_detect_dev;
}
pr_info("%s:%s intr[1:0x%x, 2:0x%x]\n", MUIC_DEV_NAME, __func__,
intr1, intr2);
/* Once Deskdock is attached, ignore ADC changed interrupt */
/* so that the device is safe from potential ghost interrupt */
if (muic_data->attached_dev == ATTACHED_DEV_DESKDOCK_MUIC &&
intr2 == 0x4)
goto skip_detect_dev;
/* device detection */
tsu6721_muic_detect_dev(muic_data);
skip_detect_dev:
tsu6721_enable_interrupt(muic_data);
mutex_unlock(&muic_data->muic_mutex);
return IRQ_HANDLED;
}
/*
static void tsu6721_muic_usb_detect(struct work_struct *work)
{
struct tsu6721_muic_data *muic_data =
container_of(work, struct tsu6721_muic_data, usb_work.work);
struct muic_platform_data *pdata = muic_data->pdata;
struct sec_switch_data *switch_data = muic_data->switch_data;
pr_info("%s:%s pdata->usb_path(%d)\n", MUIC_DEV_NAME, __func__,
pdata->usb_path);
mutex_lock(&muic_data->muic_mutex);
muic_data->is_usb_ready = true;
if (pdata->usb_path != MUIC_PATH_USB_CP) {
if (switch_data->usb_cb) {
switch ((int)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:
switch_data->usb_cb(USB_CABLE_ATTACHED);
break;
case ATTACHED_DEV_OTG_MUIC:
switch_data->usb_cb(USB_OTGHOST_ATTACHED);
break;
}
}
}
mutex_unlock(&muic_data->muic_mutex);
}
*/
static void tsu6721_muic_init_detect(struct work_struct *work)
{
struct tsu6721_muic_data *muic_data =
container_of(work, struct tsu6721_muic_data, init_work.work);
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
/* MUIC Interrupt On */
set_int_mask(muic_data, false);
tsu6721_muic_irq_thread(-1, muic_data);
}
static int tsu6721_init_rev_info(struct tsu6721_muic_data *muic_data)
{
u8 dev_id;
int ret = 0;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
dev_id = i2c_smbus_read_byte_data(muic_data->i2c,
TSU6721_MUIC_REG_DEVID);
if (dev_id < 0) {
pr_err("%s:%s i2c io error(%d)\n", MUIC_DEV_NAME, __func__,
ret);
ret = -ENODEV;
} else {
muic_data->muic_vendor = (dev_id & 0x7);
muic_data->muic_version = ((dev_id & 0xF8) >> 3);
pr_info("%s:%s device found: vendor=0x%x, ver=0x%x\n",
MUIC_DEV_NAME, __func__, muic_data->muic_vendor,
muic_data->muic_version);
}
return ret;
}
static int tsu6721_muic_reg_init(struct tsu6721_muic_data *muic_data)
{
struct i2c_client *i2c = muic_data->i2c;
unsigned int ctrl = CTRL_MASK;
int mansw = -1;
int ret;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
/* mask interrupts
* (unmask Interrupt Mask 1 OVP_OCP_OTP_DIS, OVP_EN, Detach, Attach,
* Interrupt Mask 2 OTP_EN, ADC_Change, Reserved_Attach, A/V_Change)
*/
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_INTMASK1,
REG_INTMASK1_VALUE);
if (ret < 0)
pr_err("%s: err mask interrupt1(%d)\n", __func__, ret);
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_INTMASK2,
REG_INTMASK2_VALUE);
if (ret < 0)
pr_err("%s: err mask interrupt1(%d)\n", __func__, ret);
ret = i2c_smbus_read_byte_data(i2c, TSU6721_MUIC_REG_MANSW1);
if (ret < 0)
pr_err("%s: err read mansw1(%d)\n", __func__, ret);
else
mansw = ret;
/* Manual Switching Mode */
if (mansw > 0)
ctrl &= ~CTRL_MANUAL_SW_MASK;
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_CTRL, ctrl);
if (ret < 0)
pr_err("%s: err write ctrl(%d)\n", __func__, ret);
/* BCDv1.2 Timer default 1.8s -> 0.6s */
ret = i2c_smbus_write_byte_data(i2c, TSU6721_MUIC_REG_TIMER_SET,
0x05);
if (ret < 0)
pr_err("%s: err write timer setting(%d)\n", __func__, ret);
return ret;
}
static int tsu6721_muic_irq_init(struct tsu6721_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_warn("%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,
tsu6721_muic_irq_thread,
(IRQF_TRIGGER_FALLING |
IRQF_NO_SUSPEND | IRQF_ONESHOT),
"tsu6721-muic", muic_data);
if (ret < 0) {
pr_err("%s:%s failed to reqeust 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_tsu6721_muic_dt(struct device *dev,
struct tsu6721_muic_data *muic_data)
{
struct device_node *np_muic = dev->of_node;
int ret = 0;
if (np_muic == NULL) {
pr_err("%s np NULL\n", __func__);
return -EINVAL;
} else {
muic_data->pdata->irq_gpio = of_get_named_gpio(np_muic,
"muic,muic_int", 0);
if (muic_data->pdata->irq_gpio < 0) {
pr_err("%s error reading muic_irq = %d\n", __func__,
muic_data->pdata->irq_gpio);
muic_data->pdata->irq_gpio = 0;
}
if (of_gpio_count(np_muic) < 1) {
dev_err(muic_data->dev, "could not find muic gpio\n");
muic_data->pdata->gpio_uart_sel = 0;
} else {
muic_data->pdata->gpio_uart_sel =
of_get_gpio(np_muic, 0);
}
}
return ret;
}
#endif /* CONFIG_OF */
static int tsu6721_muic_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = to_i2c_adapter(i2c->dev.parent);
/*
struct muic_platform_data *pdata = i2c->dev.platform_data;
*/
struct tsu6721_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: i2c functionality check error\n", __func__);
ret = -EIO;
goto err_return;
}
muic_data = kzalloc(sizeof(struct tsu6721_muic_data), GFP_KERNEL);
if (!muic_data) {
pr_err("%s: failed to allocate driver data\n", __func__);
ret = -ENOMEM;
goto err_return;
}
/*
if (!pdata) {
pr_err("%s: failed to get i2c platform data\n", __func__);
ret = -ENODEV;
goto err_io;
}
*/
/* save platfom data for gpio control functions */
muic_data->pdata = &muic_pdata;
muic_data->dev = &i2c->dev;
muic_data->i2c = i2c;
#if defined(CONFIG_OF)
ret = of_tsu6721_muic_dt(&i2c->dev, muic_data);
if (ret < 0) {
pr_err("%s:%s not found muic dt! ret[%d]\n",
MUIC_DEV_NAME, __func__, ret);
}
#endif /* CONFIG_OF */
i2c_set_clientdata(i2c, muic_data);
/*
muic_data->switch_data = &sec_switch_data;
*/
if (muic_pdata.gpio_uart_sel)
muic_pdata.set_gpio_uart_sel = tsu6721_set_gpio_uart_sel;
/*
* If muic path is set in bootargs by pmic_info in dts file,
* switch_sel value is delivered from bootargs in dts file.
* If not, MUIC path to AP USB & AP UART is set as default here
*/
#if 0
muic_pdata.switch_sel = SWITCH_SEL_USB_MASK | SWITCH_SEL_UART_MASK;
#endif
if (muic_data->pdata->init_gpio_cb)
ret = muic_data->pdata->init_gpio_cb(get_switch_sel());
if (ret) {
pr_err("%s: failed to init gpio(%d)\n", __func__, ret);
goto fail_init_gpio;
}
mutex_init(&muic_data->muic_mutex);
muic_data->is_factory_start = false;
#if 0
wake_lock_init(&muic_data->muic_wake_lock, WAKE_LOCK_SUSPEND,
"muic wake lock");
#endif
muic_data->attached_dev = ATTACHED_DEV_UNKNOWN_MUIC;
muic_data->is_usb_ready = false;
#ifdef CONFIG_SEC_SYSFS
/* create sysfs group */
ret = sysfs_create_group(&switch_device->kobj, &tsu6721_muic_group);
if (ret) {
pr_err("%s: failed to create tsu6721 muic attribute group\n",
__func__);
goto fail;
}
/* set switch device's driver_data */
dev_set_drvdata(switch_device, muic_data);
#endif
#ifdef TSU6721_DEBUG
tsu6721_read_reg_info(muic_data);
#endif
ret = tsu6721_init_rev_info(muic_data);
if (ret) {
pr_err("%s: failed to init muic rev register(%d)\n", __func__,
ret);
goto fail;
}
ret = tsu6721_muic_reg_init(muic_data);
if (ret) {
pr_err("%s: failed to init muic register(%d)\n", __func__, ret);
goto fail;
}
/*
if (muic_data->switch_data->init_cb)
muic_data->switch_data->init_cb();
*/
ret = tsu6721_muic_irq_init(muic_data);
if (ret) {
pr_err("%s: failed to init muic irq(%d)\n", __func__, ret);
// goto fail_init_irq;
}
/* initial cable detection */
INIT_DELAYED_WORK(&muic_data->init_work, tsu6721_muic_init_detect);
schedule_delayed_work(&muic_data->init_work, msecs_to_jiffies(3000));
/*
INIT_DELAYED_WORK(&muic_data->usb_work, tsu6721_muic_usb_detect);
schedule_delayed_work(&muic_data->usb_work, msecs_to_jiffies(17000));
*/
return 0;
//fail_init_irq:
// if (i2c->irq)
// free_irq(i2c->irq, muic_data);
fail:
#if 0
wake_lock_destroy(&info->muic_wake_lock);
#endif
#ifdef CONFIG_SEC_SYSFS
sysfs_remove_group(&switch_device->kobj, &tsu6721_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 int tsu6721_muic_remove(struct i2c_client *i2c)
{
struct tsu6721_muic_data *muic_data = i2c_get_clientdata(i2c);
#ifdef CONFIG_SEC_SYSFS
sysfs_remove_group(&switch_device->kobj, &tsu6721_muic_group);
#endif
if (muic_data) {
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
cancel_delayed_work(&muic_data->init_work);
/*
cancel_delayed_work(&muic_data->usb_work);
*/
disable_irq_wake(muic_data->i2c->irq);
free_irq(muic_data->i2c->irq, muic_data);
#if 0
wake_lock_destroy(&info->muic_wake_lock);
#endif
mutex_destroy(&muic_data->muic_mutex);
i2c_set_clientdata(muic_data->i2c, NULL);
kfree(muic_data);
}
return 0;
}
static const struct i2c_device_id tsu6721_i2c_id[] = {
{ MUIC_DEV_NAME, 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, tsu6721_i2c_id);
static void tsu6721_muic_shutdown(struct i2c_client *i2c)
{
struct tsu6721_muic_data *muic_data = i2c_get_clientdata(i2c);
int ret;
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
if (!muic_data->i2c) {
pr_err("%s:%s no muic i2c client\n", MUIC_DEV_NAME, __func__);
return;
}
pr_info("%s:%s open D+,D-,V_bus line\n", MUIC_DEV_NAME, __func__);
ret = com_to_open(muic_data);
if (ret < 0)
pr_err("%s:%s fail to open mansw1 reg\n", MUIC_DEV_NAME,
__func__);
pr_info("%s:%s muic auto detection enable\n", MUIC_DEV_NAME, __func__);
ret = set_manual_sw(muic_data, true);
if (ret < 0) {
pr_err("%s:%s fail to update reg\n", MUIC_DEV_NAME, __func__);
return;
}
}
#if defined(CONFIG_OF)
static struct of_device_id tsu6721_muic_i2c_dt_ids[] = {
{ .compatible = "tsu6721-muic,i2c" },
{ }
};
MODULE_DEVICE_TABLE(of, tsu6721_muic_i2c_dt_ids);
#endif /* CONFIG_OF */
static struct i2c_driver tsu6721_muic_driver = {
.driver = {
.name = MUIC_DEV_NAME,
.owner = THIS_MODULE,
#if defined(CONFIG_OF)
.of_match_table = tsu6721_muic_i2c_dt_ids,
#endif /* CONFIG_OF */
},
.probe = tsu6721_muic_probe,
.remove = tsu6721_muic_remove,
.shutdown = tsu6721_muic_shutdown,
.id_table = tsu6721_i2c_id,
};
static int __init tsu6721_muic_init(void)
{
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
return i2c_add_driver(&tsu6721_muic_driver);
}
module_init(tsu6721_muic_init);
static void __exit tsu6721_muic_exit(void)
{
pr_info("%s:%s\n", MUIC_DEV_NAME, __func__);
i2c_del_driver(&tsu6721_muic_driver);
}
module_exit(tsu6721_muic_exit);
MODULE_AUTHOR("Seung-Jin Hahn <sjin.hahn@samsung.com>");
MODULE_DESCRIPTION("TSU6721 USB Switch driver");
MODULE_LICENSE("GPL");
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