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

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/* drivers/muic/muic-core.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/gpio.h>
//#include <mach/irqs.h>
/* switch device header */
#ifdef CONFIG_SWITCH
#include <linux/switch.h>
#endif /* CONFIG_SWITCH */
#if defined(CONFIG_USE_SAFEOUT)
#include <linux/regulator/consumer.h>
#endif
#include <linux/muic/muic.h>
#if defined(CONFIG_MUIC_NOTIFIER)
#include <linux/muic/muic_notifier.h>
#endif /* CONFIG_MUIC_NOTIFIER */
#ifdef CONFIG_SWITCH
static struct switch_dev switch_dock = {
.name = "dock",
};
#endif /* CONFIG_SWITCH */
/* 1: 619K is used as a wake-up noti which sends a dock noti.
* 0: 619K is used 619K itself, JIG_UART_ON
*/
int muic_wakeup_noti = 1;
/* don't access this variable directly!! except get_switch_sel_value function.
* you must get switch_sel value by using get_switch_sel function. */
static int switch_sel;
/*
* func : set_switch_sel
* switch_sel value get from bootloader comand line
* switch_sel data consist 12 bits (xxxxyyyyzzzz)
* first 4bits(zzzz) mean path infomation.
* next 4bits(yyyy) mean if pmic version info
* next 4bits(xxxx) mean afc disable info
*/
static int set_switch_sel(char *str)
{
get_option(&str, &switch_sel);
switch_sel = switch_sel & 0x0fff;
printk(KERN_DEBUG "[muic] %s : 0x%x\n",
__func__, switch_sel);
return switch_sel;
}
__setup("pmic_info=", set_switch_sel);
int get_switch_sel(void)
{
return switch_sel;
}
#if defined(CONFIG_MUIC_NOTIFIER)
static struct notifier_block dock_notifier_block;
static void muic_send_dock_intent(int type)
{
printk(KERN_DEBUG "[muic] %s: MUIC dock type(%d)\n", __func__, type);
#ifdef CONFIG_SWITCH
switch_set_state(&switch_dock, type);
#endif
}
static int muic_dock_attach_notify(int type, const char *name)
{
printk(KERN_DEBUG "[muic] %s: %s\n", __func__, name);
muic_send_dock_intent(type);
return NOTIFY_OK;
}
static int muic_dock_detach_notify(void)
{
printk(KERN_DEBUG "[muic] %s\n", __func__);
muic_send_dock_intent(MUIC_DOCK_DETACHED);
return NOTIFY_OK;
}
/* Notice:
* Define your own wake-up Noti. function to use 619K
* as a different purpose as it is for wake-up by default.
*/
static void __muic_set_wakeup_noti(int flag)
{
pr_info("%s: %d but 1 by default\n", __func__, flag);
muic_wakeup_noti = 1;
}
void muic_set_wakeup_noti(int flag)
__attribute__((weak, alias("__muic_set_wakeup_noti")));
static int muic_handle_dock_notification(struct notifier_block *nb,
unsigned long action, void *data)
{
muic_attached_dev_t attached_dev = *(muic_attached_dev_t *)data;
int type = MUIC_DOCK_DETACHED;
const char *name;
if (attached_dev == ATTACHED_DEV_JIG_UART_ON_MUIC) {
if (muic_wakeup_noti) {
muic_set_wakeup_noti(0);
if (action == MUIC_NOTIFY_CMD_ATTACH) {
type = MUIC_DOCK_DESKDOCK;
name = "Desk Dock Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_DETACH)
return muic_dock_detach_notify();
}
printk(KERN_DEBUG "[muic] %s: ignore(%d)\n", __func__, attached_dev);
return NOTIFY_DONE;
}
switch (attached_dev) {
case ATTACHED_DEV_DESKDOCK_MUIC:
case ATTACHED_DEV_DESKDOCK_VB_MUIC:
if (action == MUIC_NOTIFY_CMD_ATTACH) {
type = MUIC_DOCK_DESKDOCK;
name = "Desk Dock Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_DETACH)
return muic_dock_detach_notify();
break;
case ATTACHED_DEV_CARDOCK_MUIC:
if (action == MUIC_NOTIFY_CMD_ATTACH) {
type = MUIC_DOCK_CARDOCK;
name = "Car Dock Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_DETACH)
return muic_dock_detach_notify();
break;
case ATTACHED_DEV_SMARTDOCK_MUIC:
case ATTACHED_DEV_SMARTDOCK_VB_MUIC:
case ATTACHED_DEV_SMARTDOCK_TA_MUIC:
case ATTACHED_DEV_SMARTDOCK_USB_MUIC:
if (action == MUIC_NOTIFY_CMD_LOGICALLY_ATTACH) {
type = MUIC_DOCK_SMARTDOCK;
name = "Smart Dock Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_LOGICALLY_DETACH)
return muic_dock_detach_notify();
break;
case ATTACHED_DEV_UNIVERSAL_MMDOCK_MUIC:
if (action == MUIC_NOTIFY_CMD_ATTACH) {
type = MUIC_DOCK_SMARTDOCK;
name = "Universal MMDock Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_DETACH)
return muic_dock_detach_notify();
break;
case ATTACHED_DEV_AUDIODOCK_MUIC:
if (action == MUIC_NOTIFY_CMD_ATTACH) {
type = MUIC_DOCK_AUDIODOCK;
name = "Audio Dock Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_DETACH)
return muic_dock_detach_notify();
break;
case ATTACHED_DEV_HMT_MUIC:
if (action == MUIC_NOTIFY_CMD_ATTACH) {
type = MUIC_DOCK_HMT;
name = "HMT Attach";
return muic_dock_attach_notify(type, name);
}
else if (action == MUIC_NOTIFY_CMD_DETACH)
return muic_dock_detach_notify();
break;
default:
break;
}
printk(KERN_DEBUG "[muic] %s: ignore(%d)\n", __func__, attached_dev);
return NOTIFY_DONE;
}
#endif /* CONFIG_MUIC_NOTIFIER */
#if defined(CONFIG_USE_SAFEOUT)
int muic_set_safeout(int safeout_path)
{
struct regulator *regulator;
int ret;
printk(KERN_DEBUG "[muic] %s:MUIC safeout path=%d\n", __func__, safeout_path);
if (safeout_path == MUIC_PATH_USB_CP) {
regulator = regulator_get(NULL, "safeout1_range");
if (IS_ERR(regulator) || regulator == NULL)
return -ENODEV;
if (regulator_is_enabled(regulator))
regulator_force_disable(regulator);
regulator_put(regulator);
regulator = regulator_get(NULL, "safeout2_range");
if (IS_ERR(regulator) || regulator == NULL)
return -ENODEV;
if (!regulator_is_enabled(regulator)) {
ret = regulator_enable(regulator);
if (ret)
goto err;
}
regulator_put(regulator);
} else if (safeout_path == MUIC_PATH_USB_AP) {
regulator = regulator_get(NULL, "safeout1_range");
if (IS_ERR(regulator) || regulator == NULL)
return -ENODEV;
if (!regulator_is_enabled(regulator)) {
ret = regulator_enable(regulator);
if (ret)
goto err;
}
regulator_put(regulator);
regulator = regulator_get(NULL, "safeout2_range");
if (IS_ERR(regulator) || regulator == NULL)
return -ENODEV;
if (regulator_is_enabled(regulator))
regulator_force_disable(regulator);
regulator_put(regulator);
} else {
printk(KERN_DEBUG "[muic] %s: not control safeout(%d)\n", __func__, safeout_path);
return -EINVAL;
}
return 0;
err:
printk(KERN_DEBUG "[muic] %s: cannot regulator_enable (%d)\n", __func__, ret);
regulator_put(regulator);
return ret;
}
#endif /* CONFIG_USE_SAFEOUT */
static void muic_init_switch_dev_cb(void)
{
#ifdef CONFIG_SWITCH
int ret;
/* for DockObserver */
ret = switch_dev_register(&switch_dock);
if (ret < 0) {
printk(KERN_ERR "[muic] %s: Failed to register dock switch(%d)\n",
__func__, ret);
return;
}
#endif /* CONFIG_SWITCH */
#if defined(CONFIG_MUIC_NOTIFIER)
muic_notifier_register(&dock_notifier_block,
muic_handle_dock_notification, MUIC_NOTIFY_DEV_DOCK);
#endif /* CONFIG_MUIC_NOTIFIER */
printk(KERN_DEBUG "[muic] %s: done\n", __func__);
}
static void muic_cleanup_switch_dev_cb(void)
{
#if defined(CONFIG_MUIC_NOTIFIER)
muic_notifier_unregister(&dock_notifier_block);
#endif /* CONFIG_MUIC_NOTIFIER */
printk(KERN_DEBUG "[muic] %s: done\n", __func__);
}
extern struct muic_platform_data muic_pdata;
bool is_muic_usb_path_ap_usb(void)
{
if (MUIC_PATH_USB_AP == muic_pdata.usb_path) {
printk(KERN_DEBUG "[muic] %s: [%d]\n", __func__, muic_pdata.usb_path);
return true;
}
return false;
}
bool is_muic_usb_path_cp_usb(void)
{
if (MUIC_PATH_USB_CP == muic_pdata.usb_path) {
printk(KERN_DEBUG "[muic] %s: [%d]\n", __func__, muic_pdata.usb_path);
return true;
}
return false;
}
static int muic_init_gpio_cb(void)
{
struct muic_platform_data *pdata = &muic_pdata;
const char *usb_mode;
const char *uart_mode;
int ret = 0;
printk(KERN_DEBUG "[muic] %s (%d)\n", __func__, switch_sel);
if (switch_sel & SWITCH_SEL_USB_MASK) {
pdata->usb_path = MUIC_PATH_USB_AP;
usb_mode = "PDA";
} else {
pdata->usb_path = MUIC_PATH_USB_CP;
usb_mode = "MODEM";
}
if (pdata->set_gpio_usb_sel)
ret = pdata->set_gpio_usb_sel(pdata->usb_path);
if (switch_sel & SWITCH_SEL_UART_MASK) {
pdata->uart_path = MUIC_PATH_UART_AP;
uart_mode = "AP";
} else {
pdata->uart_path = MUIC_PATH_UART_CP;
uart_mode = "CP";
}
if (pdata->set_gpio_uart_sel)
ret = pdata->set_gpio_uart_sel(pdata->uart_path);
if (!(switch_sel & SWITCH_SEL_RUSTPROOF_MASK))
pdata->rustproof_on = true;
else
pdata->rustproof_on = false;
printk(KERN_DEBUG "[muic] %s: usb_path(%s), uart_path(%s), rustproof(%c)\n",
__func__, usb_mode,
uart_mode, (pdata->rustproof_on ? 'T' : 'F'));
return ret;
}
struct muic_platform_data muic_pdata = {
.init_switch_dev_cb = muic_init_switch_dev_cb,
.cleanup_switch_dev_cb = muic_cleanup_switch_dev_cb,
.init_gpio_cb = muic_init_gpio_cb,
#if defined(CONFIG_USE_SAFEOUT)
.set_safeout = muic_set_safeout,
#endif /* CONFIG_USE_SAFEOUT */
};
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