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|
//[*]--------------------------------------------------------------------------------------------------[*]
//
//
//
// ODROID Board : ODROID sysfs driver (charles.park)
// 2012.01.17
//
//
//[*]--------------------------------------------------------------------------------------------------[*]
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/sysfs.h>
#include <linux/input.h>
#include <linux/gpio.h>
#include <mach/gpio.h>
#include <mach/regs-gpio.h>
#include <plat/gpio-cfg.h>
//[*]--------------------------------------------------------------------------------------------------[*]
#define DEBUG_PM_MSG
//[*]--------------------------------------------------------------------------------------------------[*]
// Sleep disable flage
//[*]--------------------------------------------------------------------------------------------------[*]
#define SLEEP_DISABLE_FLAG
#if defined(SLEEP_DISABLE_FLAG)
#ifdef CONFIG_HAS_WAKELOCK
#include <linux/wakelock.h>
static struct wake_lock sleep_wake_lock;
#endif
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
// Control GPIO Define
//[*]--------------------------------------------------------------------------------------------------[*]
enum {
// WIFI Control Port
WIFI_ENABLE,
WIFI_HOST_WAKE,
WIFI_NRST,
// Bluetooth Control Port
BT_ENABLE,
BT_WAKE,
BT_HOST_WAKE,
BT_NRST,
// Audio Enable port
AUDIO_EN,
// Power Control
SYSTEM_POWER_2V8, // BUCK6 Enable Control
SYSTEM_POWER_3V3, // BUCK6 Enable Control
SYSTEM_POWER_5V0, // USB HOST Power
SYSTEM_POWER_12V0, // VLED Control (Backlight)
SYSTEM_OUTPUT_485, // 5.-V Enable
// 3G Modem Control Port
MODEM_POWER,
MODEM_RESET,
MODEM_DISABLE1,
MODEM_DISABLE2,
// Status LED Display
STATUS_LED_RED,
STATUS_LED_GREEN,
STATUS_LED_BLUE,
GPIO_INDEX_END
};
//[*]--------------------------------------------------------------------------------------------------[*]
//
// GPIOs Defined Header file
//
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_BOARD_ODROID_Q) // Odroid-Q
#include "odroidq-sysfs.h"
#elif defined(CONFIG_BOARD_ODROID_X) // Odroid-X
#include "odroidx-sysfs.h"
#elif defined(CONFIG_BOARD_SMD_A2) // smda2
#include "smda2-sysfs.h"
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
//
// GPIO IRQ Register struct
//
//[*]--------------------------------------------------------------------------------------------------[*]
static struct {
int gpio; // GPIO Number
char *name; // GPIO Name == sysfs attr name (must)
int pud; // Pull up/down register setting : S3C_GPIO_PULL_DOWN, UP, NONE
} sIrqGpios[] = {
{ 0, NULL, S3C_GPIO_PULL_NONE }, // END
};
//[*]--------------------------------------------------------------------------------------------------[*]
//
// GPIO Default Register struct
//
//[*]--------------------------------------------------------------------------------------------------[*]
static struct {
int gpio; // GPIO Number
char *name; // GPIO Name == sysfs attr name (must)
bool output; // 1 = Output, 0 = Input
int value; // Default Value(only for output)
int pud; // Pull up/down register setting : S3C_GPIO_PULL_DOWN, UP, NONE
} sDefaultGpios[] = {
#if defined(CONFIG_BOARD_ODROID_X)
// EXT_INT3 : HDMI Resolution Select
{ EXYNOS4_GPX0(3), "EXYNOS4_GPX0(3)", 0, 0, S3C_GPIO_PULL_DOWN },
// EXT_INT18 : User Key (HDMI Resolution Select)
{ EXYNOS4_GPX2(2), "EXYNOS4_GPX2(2)", 0, 0, S3C_GPIO_PULL_DOWN },
// EXT_INT27 : No Interrupt
{ EXYNOS4_GPX3(3), "EXYNOS4_GPX3(3)", 0, 0, S3C_GPIO_PULL_NONE },
// Power On LED(Kernel on status indicate)
{ EXYNOS4_GPC1(2), "EXYNOS4_GPC1(2)", 1, 0, S3C_GPIO_PULL_NONE },
{ EXYNOS4_GPC1(0), "EXYNOS4_GPC1(0)", 1, 1, S3C_GPIO_PULL_NONE },
#endif
#if defined(CONFIG_BOARD_ODROID_Q)
// EXT_INT3 : HDMI Resolution Select
{ EXYNOS4_GPX0(3), "EXYNOS4_GPA1(0)", 1, 1, S3C_GPIO_PULL_NONE },
// EXT_INT27 : No Interrupt
{ EXYNOS4_GPX3(3), "EXYNOS4_GPA1(1)", 1, 0, S3C_GPIO_PULL_NONE },
#endif
{ 0, NULL, 0, 0, S3C_GPIO_PULL_NONE },
};
//[*]--------------------------------------------------------------------------------------------------[*]
int odroid_get_wifi_irqnum (void)
{
return 0;
}
EXPORT_SYMBOL(odroid_get_wifi_irqnum);
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_BOARD_ODROID_X)
int odroid_get_hdmi_resolution (void)
{
return (gpio_get_value(EXYNOS4_GPX2(2)) || gpio_get_value(EXYNOS4_GPX0(3)));
}
EXPORT_SYMBOL(odroid_get_hdmi_resolution);
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
//
// sysfs function prototype define
//
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_gpio (struct device *dev, struct device_attribute *attr, char *buf);
static ssize_t set_gpio (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static ssize_t show_hdmi (struct device *dev, struct device_attribute *attr, char *buf);
#if defined(CONFIG_BOARD_ODROID_X)
static ssize_t show_resolution (struct device *dev, struct device_attribute *attr, char *buf);
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(wifi_enable, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(wifi_host_wake, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(wifi_nrst, S_IRWXUGO, show_gpio, set_gpio);
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(bt_enable, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(bt_wake, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(bt_host_wake, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(bt_nrst, S_IRWXUGO, show_gpio, set_gpio);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(audio_en, S_IRWXUGO, show_gpio, set_gpio);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(power_2v8, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(power_3v3, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(power_5v0, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(power_12v0, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(output_485, S_IRWXUGO, show_gpio, set_gpio);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(modem_power, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(modem_reset, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(modem_disable1, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(modem_disable2, S_IRWXUGO, show_gpio, set_gpio);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(led_red, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(led_green, S_IRWXUGO, show_gpio, set_gpio);
static DEVICE_ATTR(led_blue, S_IRWXUGO, show_gpio, set_gpio);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static DEVICE_ATTR(hdmi_state, S_IRWXUGO, show_hdmi, NULL);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_BOARD_ODROID_X)
static DEVICE_ATTR(hdmi_resolution, S_IRWXUGO, show_resolution, NULL);
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static struct attribute *odroid_sysfs_entries[] = {
&dev_attr_wifi_enable.attr,
&dev_attr_wifi_host_wake.attr,
&dev_attr_wifi_nrst.attr,
&dev_attr_bt_enable.attr,
&dev_attr_bt_wake.attr,
&dev_attr_bt_host_wake.attr,
&dev_attr_bt_nrst.attr,
&dev_attr_audio_en.attr,
&dev_attr_power_2v8.attr,
&dev_attr_power_3v3.attr,
&dev_attr_power_5v0.attr,
&dev_attr_power_12v0.attr,
&dev_attr_output_485.attr,
&dev_attr_modem_power.attr,
&dev_attr_modem_reset.attr,
&dev_attr_modem_disable1.attr,
&dev_attr_modem_disable2.attr,
&dev_attr_led_red.attr,
&dev_attr_led_green.attr,
&dev_attr_led_blue.attr,
&dev_attr_hdmi_state.attr,
#if defined(CONFIG_BOARD_ODROID_X)
&dev_attr_hdmi_resolution.attr,
#endif
NULL
};
static struct attribute_group odroid_sysfs_attr_group = {
.name = NULL,
.attrs = odroid_sysfs_entries,
};
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_gpio (struct device *dev, struct device_attribute *attr, char *buf)
{
int i;
for (i = 0; i < ARRAY_SIZE(sControlGpios); i++) {
if(sControlGpios[i].gpio) {
if(!strcmp(sControlGpios[i].name, attr->attr.name))
return sprintf(buf, "%d\n", (gpio_get_value(sControlGpios[i].gpio) ? 1 : 0));
}
}
return sprintf(buf, "ERROR! : Not found gpio!\n");
}
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_FB_S5P_S6E8AA1)
extern void s6e8aa1_lcd_onoff (unsigned char on);
#endif
static ssize_t set_gpio (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
unsigned int val, i;
if(!(sscanf(buf, "%d\n", &val))) return -EINVAL;
for (i = 0; i < ARRAY_SIZE(sControlGpios); i++) {
if(sControlGpios[i].gpio) {
if(!strcmp(sControlGpios[i].name, attr->attr.name)) {
if(sControlGpios[i].output) {
#if defined(CONFIG_FB_S5P_S6E8AA1)
if(!strcmp("power_3v3", attr->attr.name))
s6e8aa1_lcd_onoff (((val != 0) ? 1 : 0));
#endif
gpio_set_value(sControlGpios[i].gpio, ((val != 0) ? 1 : 0));
}
else
printk("This GPIO Configuration is INPUT!!\n");
return count;
}
}
}
printk("%s[%d] : undefined gpio!\n", __func__,__LINE__);
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_BOARD_ODROID_X)
static ssize_t show_resolution (struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", odroid_get_hdmi_resolution() ? 1 : 0);
}
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
extern bool s5p_hpd_get_status(void);
static ssize_t show_hdmi (struct device *dev, struct device_attribute *attr, char *buf)
{
#if defined(CONFIG_VIDEO_TVOUT)
int status = s5p_hpd_get_status();
if(status) return sprintf(buf, "%s\n", "on");
else return sprintf(buf, "%s\n", "off");
#else
return sprintf(buf, "%s\n", "off");
#endif
}
//[*]--------------------------------------------------------------------------------------------------[*]
void SYSTEM_POWER_CONTROL (int power, int val)
{
int index;
switch(power) {
case 0: index = SYSTEM_POWER_3V3; break;
case 1: index = SYSTEM_POWER_5V0; break;
case 3: index = SYSTEM_POWER_12V0; break;
case 2: // 2v8
case 4: // out485
default : return;
}
if(sControlGpios[index].gpio)
gpio_set_value(sControlGpios[index].gpio, ((val != 0) ? 1 : 0));
else
printk("ERROR : Not found gpio!\n");
}
EXPORT_SYMBOL(SYSTEM_POWER_CONTROL);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_sysfs_resume(struct platform_device *dev)
{
#if defined(DEBUG_PM_MSG)
printk("%s\n", __FUNCTION__);
#endif
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_sysfs_suspend(struct platform_device *dev, pm_message_t state)
{
#if defined(DEBUG_PM_MSG)
printk("%s\n", __FUNCTION__);
#endif
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_sysfs_probe (struct platform_device *pdev)
{
int i;
// Control GPIO Init
for (i = 0; i < ARRAY_SIZE(sControlGpios); i++) {
if(sControlGpios[i].gpio) {
if(gpio_request(sControlGpios[i].gpio, sControlGpios[i].name)) {
printk("%s : %s gpio reqest err!\n", __FUNCTION__, sControlGpios[i].name);
}
else {
if(sControlGpios[i].output) gpio_direction_output (sControlGpios[i].gpio, sControlGpios[i].value);
else gpio_direction_input (sControlGpios[i].gpio);
s3c_gpio_setpull (sControlGpios[i].gpio, sControlGpios[i].pud);
}
}
}
// GPIO IRQ Init
for(i = 0; i < ARRAY_SIZE(sIrqGpios); i++) {
if(sIrqGpios[i].gpio) {
if(gpio_request(sIrqGpios[i].gpio, sIrqGpios[i].name)) {
printk("%s : %s gpio reqest err!\n", __FUNCTION__, sIrqGpios[i].name);
}
else {
gpio_direction_input(sIrqGpios[i].gpio);
s3c_gpio_setpull (sIrqGpios[i].gpio, sIrqGpios[i].pud);
printk("Register Irq Gpio : %s gpio = %d, irq num = %d\n" , sIrqGpios[i].name
, sIrqGpios[i].gpio
, s5p_register_gpio_interrupt(sIrqGpios[i].gpio));
}
}
}
// Default GPIO Init
for(i = 0; i < ARRAY_SIZE(sDefaultGpios); i++) {
if(sDefaultGpios[i].gpio) {
if(gpio_request(sDefaultGpios[i].gpio, sDefaultGpios[i].name)) {
printk("%s : %s gpio reqest err!\n", __FUNCTION__, sDefaultGpios[i].name);
}
else {
if(sDefaultGpios[i].output) gpio_direction_output (sDefaultGpios[i].gpio, sDefaultGpios[i].value);
else gpio_direction_input (sDefaultGpios[i].gpio);
s3c_gpio_setpull (sDefaultGpios[i].gpio, sDefaultGpios[i].pud);
}
}
}
for(i = 0; i < ARRAY_SIZE(sDefaultGpios); i++) {
if(sDefaultGpios[i].gpio) gpio_free(sDefaultGpios[i].gpio);
}
#if defined(SLEEP_DISABLE_FLAG)
#ifdef CONFIG_HAS_WAKELOCK
wake_lock(&sleep_wake_lock);
#endif
#endif
return sysfs_create_group(&pdev->dev.kobj, &odroid_sysfs_attr_group);
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_sysfs_remove (struct platform_device *pdev)
{
int i;
for (i = 0; i < ARRAY_SIZE(sControlGpios); i++) {
if(sControlGpios[i].gpio) gpio_free(sControlGpios[i].gpio);
}
for(i = 0; i < ARRAY_SIZE(sIrqGpios); i++) {
if(sIrqGpios[i].gpio) gpio_free(sIrqGpios[i].gpio);
}
#if defined(SLEEP_DISABLE_FLAG)
#ifdef CONFIG_HAS_WAKELOCK
wake_unlock(&sleep_wake_lock);
#endif
#endif
sysfs_remove_group(&pdev->dev.kobj, &odroid_sysfs_attr_group);
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static struct platform_driver odroid_sysfs_driver = {
.driver = {
.name = "odroid-sysfs",
.owner = THIS_MODULE,
},
.probe = odroid_sysfs_probe,
.remove = odroid_sysfs_remove,
.suspend = odroid_sysfs_suspend,
.resume = odroid_sysfs_resume,
};
//[*]--------------------------------------------------------------------------------------------------[*]
static int __init odroid_sysfs_init(void)
{
#if defined(SLEEP_DISABLE_FLAG)
#ifdef CONFIG_HAS_WAKELOCK
printk("--------------------------------------------------------\n");
printk("%s(%d) : Sleep Disable Flag SET!!(Wake_lock_init)\n", __FUNCTION__, __LINE__);
printk("--------------------------------------------------------\n");
wake_lock_init(&sleep_wake_lock, WAKE_LOCK_SUSPEND, "sleep_wake_lock");
#endif
#else
printk("--------------------------------------------------------\n");
printk("%s(%d) : Sleep Enable !! \n", __FUNCTION__, __LINE__);
printk("--------------------------------------------------------\n");
#endif
return platform_driver_register(&odroid_sysfs_driver);
}
//[*]--------------------------------------------------------------------------------------------------[*]
static void __exit odroid_sysfs_exit(void)
{
#if defined(SLEEP_DISABLE_FLAG)
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_destroy(&sleep_wake_lock);
#endif
#endif
platform_driver_unregister(&odroid_sysfs_driver);
}
//[*]--------------------------------------------------------------------------------------------------[*]
module_init(odroid_sysfs_init);
module_exit(odroid_sysfs_exit);
//[*]--------------------------------------------------------------------------------------------------[*]
MODULE_DESCRIPTION("SYSFS driver for odroid-Dev board");
MODULE_AUTHOR("Hard-Kernel");
MODULE_LICENSE("GPL");
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
|
