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|
//[*]--------------------------------------------------------------------------------------------------[*]
/*
*
* ODROID Dev Board keypad driver (charles.park)
*
*/
//[*]--------------------------------------------------------------------------------------------------[*]
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/hrtimer.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <plat/gpio-cfg.h>
#include <mach/regs-gpio.h>
#include <mach/regs-pmu.h>
// Debug message enable flag
#define DEBUG_MSG
#define DEBUG_PM_MSG
//[*]--------------------------------------------------------------------------------------------------[*]
#include "odroid-keypad.h"
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static void __exit odroid_keypad_exit (void);
static int __init odroid_keypad_init (void);
static int __devexit odroid_keypad_remove (struct platform_device *pdev);
static int __devinit odroid_keypad_probe (struct platform_device *pdev);
static void odroid_keypad_config (odroid_keypad_t *keypad);
static int odroid_keypad_suspend (struct platform_device *pdev, pm_message_t state);
static int odroid_keypad_resume (struct platform_device *pdev);
static void odroid_keypad_release_device(struct device *dev);
static void odroid_keypad_close (struct input_dev *dev);
static int odroid_keypad_open (struct input_dev *dev);
static void odroid_keypad_control (odroid_keypad_t *keypad);
static int odroid_keypad_get_data (void);
static void generate_keycode (odroid_keypad_t *keypad, unsigned short prev_key, unsigned short cur_key, int *key_table);
static enum hrtimer_restart odroid_keypad_timer (struct hrtimer *timer);
static enum hrtimer_restart odroid_poweroff_timer (struct hrtimer *timer);
//[*]--------------------------------------------------------------------------------------------------[*]
static struct platform_driver odroid_platform_device_driver = {
.probe = odroid_keypad_probe,
.remove = odroid_keypad_remove,
.suspend = odroid_keypad_suspend,
.resume = odroid_keypad_resume,
.driver = {
.owner = THIS_MODULE,
.name = DEVICE_NAME,
},
};
//[*]--------------------------------------------------------------------------------------------------[*]
static struct platform_device odroid_platform_device = {
.name = DEVICE_NAME,
.id = -1,
.num_resources = 0,
.dev = {
.release = odroid_keypad_release_device,
},
};
//[*]--------------------------------------------------------------------------------------------------[*]
module_init(odroid_keypad_init);
module_exit(odroid_keypad_exit);
//[*]--------------------------------------------------------------------------------------------------[*]
MODULE_AUTHOR("Hard-Kernel");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Keypad interface for ODROID-Dev board");
//[*]--------------------------------------------------------------------------------------------------[*]
// Control GPIO Define
//[*]--------------------------------------------------------------------------------------------------[*]
// GPIO Index Define
enum {
// KEY CONTROL
KEYPAD_POWER,
#if !defined(CONFIG_BOARD_ODROID_X)
#if defined(CONFIG_FB_S5P_S6E8AA1)
KEYPAD_MODE,
KEYPAD_PLAYPAUSE,
#else
KEYPAD_VOLUME_UP,
KEYPAD_VOLUME_DOWN,
#endif
KEYPAD_POWER_LED,
#endif // #if !defined(CONFIG_BOARD_ODROID_X)
GPIO_INDEX_END
};
static struct {
int gpio_index; // Control Index
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
} sControlGpios[] = {
{ KEYPAD_POWER, EXYNOS4_GPX1(3), "KEY POWER" , 0, 0, S3C_GPIO_PULL_NONE},
#if !defined(CONFIG_BOARD_ODROID_X)
#if defined(CONFIG_FB_S5P_S6E8AA1)
{ KEYPAD_MODE, EXYNOS4_GPX1(7), "KEY MODE" , 0, 0, S3C_GPIO_PULL_DOWN},
{ KEYPAD_PLAYPAUSE, EXYNOS4_GPX2(0), "KEY PLAYPAUSE" , 0, 0, S3C_GPIO_PULL_DOWN},
#else
{ KEYPAD_VOLUME_UP, EXYNOS4_GPX1(7), "KEY VOLUME UP" , 0, 0, S3C_GPIO_PULL_DOWN},
{ KEYPAD_VOLUME_DOWN, EXYNOS4_GPX2(0), "KEY VOLUME DOWN" , 0, 0, S3C_GPIO_PULL_DOWN},
#endif
{ KEYPAD_POWER_LED, EXYNOS4_GPA1(0), "POWER LED" , 1, 1, S3C_GPIO_PULL_NONE},
#endif // #if !defined(CONFIG_BOARD_ODROID_X)
};
//[*]--------------------------------------------------------------------------------------------------[*]
#define MAX_KEYCODE_CNT 3
int Keycode[MAX_KEYCODE_CNT] = {
KEY_POWER,
#if !defined(CONFIG_BOARD_ODROID_X)
#if defined(CONFIG_FB_S5P_S6E8AA1)
KEY_0,
KEY_1,
#else
KEY_VOLUMEUP,
KEY_VOLUMEDOWN,
#endif
#endif // #if !defined(CONFIG_BOARD_ODROID_X)
};
#if defined(DEBUG_MSG)
const char KeyMapStr[MAX_KEYCODE_CNT][20] = {
"KEY_POWER\n",
#if !defined(CONFIG_BOARD_ODROID_X)
#if defined(CONFIG_FB_S5P_S6E8AA1)
"KEY_MODE\n",
"KEY_PLAYPAUSE\n",
#else
"KEY_VOLUME_UP\n",
"KEY_VOLUME_DOWN\n",
#endif
#endif // #if !defined(CONFIG_BOARD_ODROID_X)
};
#endif // DEBUG_MSG
//[*]--------------------------------------------------------------------------------------------------[*]
static enum hrtimer_restart odroid_poweroff_timer(struct hrtimer *timer)
{
#if defined(CONFIG_BOARD_ODROID_X)
odroid_keypad_t *keypad = container_of(timer, odroid_keypad_t, poweroff_timer);
#endif
#if !defined(CONFIG_BOARD_ODROID_X)
gpio_direction_output (sControlGpios[KEYPAD_POWER_LED].gpio, 0); // POWER LED OFF
#endif
#if defined(CONFIG_BOARD_ODROID_X)
hrtimer_cancel(&keypad->led_timer);
gpio_direction_output (LED_STATUS_PORT, 1);
#endif
printk(KERN_EMERG "%s : setting GPIO_PDA_PS_HOLD low.\n", __func__);
(*(unsigned long *)(S5P_PMUREG(0x330C))) = 0x5200;
return HRTIMER_NORESTART;
}
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_FB_S5P_S6E8AA1)
static enum hrtimer_restart odroid_long_timer(struct hrtimer *timer)
{
odroid_keypad_t *keypad = container_of(timer, odroid_keypad_t, long_timer);
static unsigned char status = false;
status = !status;
if(status) input_report_switch(keypad->input, SW_LID, 1);
else input_report_switch(keypad->input, SW_LID, 0);
input_sync(keypad->input);
keypad->long_status = false;
#if defined(DEBUG_MSG)
printk("%s : slide notifiy send (%d)\n", __func__, status);
#endif
return HRTIMER_NORESTART;
}
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(CONFIG_BOARD_ODROID_X)
static enum hrtimer_restart odroid_led_timer(struct hrtimer *timer)
{
odroid_keypad_t *keypad = container_of(timer, odroid_keypad_t, led_timer);
static unsigned char status = false;
status = !status;
gpio_direction_output (LED_STATUS_PORT, !status);
hrtimer_start(&keypad->led_timer, ktime_set(LED_STATUS_PERIOD, 0), HRTIMER_MODE_REL);
return HRTIMER_NORESTART;
}
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
static void generate_keycode(odroid_keypad_t *keypad, unsigned short prev_key, unsigned short cur_key, int *key_table)
{
unsigned short press_key, release_key, i;
press_key = (cur_key ^ prev_key) & cur_key;
release_key = (cur_key ^ prev_key) & prev_key;
i = 0;
while(press_key) {
if(press_key & 0x01) {
#if defined(CONFIG_FB_S5P_S6E8AA1)
if(key_table[i] == KEY_0) {
keypad->long_status = true;
hrtimer_start(&keypad->long_timer, ktime_set(LONGKEY_CHECK_PERIOD, 0), HRTIMER_MODE_REL);
}
else if(key_table[i] == KEY_1) {
keypad->pause = keypad->pause ? 0 : 1;
if(keypad->pause)
input_report_key(keypad->input, key_table[i], KEY_PRESS);
else
input_report_key(keypad->input, KEY_2, KEY_PRESS);
}
else
#endif
input_report_key(keypad->input, key_table[i], KEY_PRESS);
// POWER OFF PRESS
if(key_table[i] == KEY_POWER)
hrtimer_start(&keypad->poweroff_timer, ktime_set(POWEROFF_CHECK_PERIOD, 0), HRTIMER_MODE_REL);
}
i++; press_key >>= 1;
}
i = 0;
while(release_key) {
if(release_key & 0x01) {
#if defined(CONFIG_FB_S5P_S6E8AA1)
if(key_table[i] == KEY_0) {
if(keypad->long_status) {
keypad->long_status = true;
hrtimer_cancel(&keypad->long_timer);
input_report_key(keypad->input, key_table[i], KEY_PRESS);
input_report_key(keypad->input, key_table[i], KEY_RELEASE);
}
}
else if(key_table[i] == KEY_1) {
if(keypad->pause)
input_report_key(keypad->input, key_table[i], KEY_RELEASE);
else
input_report_key(keypad->input, KEY_2, KEY_RELEASE);
}
else
#endif
input_report_key(keypad->input, key_table[i], KEY_RELEASE);
// POWER OFF (RELEASE)
if(key_table[i] == KEY_POWER)
hrtimer_cancel(&keypad->poweroff_timer);
}
i++; release_key >>= 1;
}
}
//[*]--------------------------------------------------------------------------------------------------[*]
#if defined(DEBUG_MSG)
static void debug_keycode_printf(unsigned short prev_key, unsigned short cur_key, const char *key_table)
{
unsigned short press_key, release_key, i;
press_key = (cur_key ^ prev_key) & cur_key;
release_key = (cur_key ^ prev_key) & prev_key;
i = 0;
while(press_key) {
if(press_key & 0x01) printk("PRESS KEY : %s", (char *)&key_table[i * 20]);
i++; press_key >>= 1;
}
i = 0;
while(release_key) {
if(release_key & 0x01) printk("RELEASE KEY : %s", (char *)&key_table[i * 20]);
i++; release_key >>= 1;
}
}
#endif
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_keypad_get_data(void)
{
int key_data = 0;
key_data |= (gpio_get_value(sControlGpios[KEYPAD_POWER].gpio) ? 0 : 0x01);
#if !defined(CONFIG_BOARD_ODROID_X)
#if defined(CONFIG_FB_S5P_S6E8AA1)
key_data |= (gpio_get_value(sControlGpios[KEYPAD_MODE].gpio) ? 0x02 : 0);
key_data |= (gpio_get_value(sControlGpios[KEYPAD_PLAYPAUSE].gpio) ? 0x04 : 0);
#else
key_data |= (gpio_get_value(sControlGpios[KEYPAD_VOLUME_UP].gpio) ? 0x02 : 0);
key_data |= (gpio_get_value(sControlGpios[KEYPAD_VOLUME_DOWN].gpio) ? 0x04 : 0);
#endif
#endif // #if !defined(CONFIG_BOARD_ODROID_X)
return key_data;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static void odroid_keypad_control(odroid_keypad_t *keypad)
{
static unsigned short prev_keypad_data = 0, cur_keypad_data = 0;
// key data process
cur_keypad_data = odroid_keypad_get_data();
if(prev_keypad_data != cur_keypad_data) {
generate_keycode(keypad, prev_keypad_data, cur_keypad_data, &Keycode[0]);
#if defined(DEBUG_MSG)
debug_keycode_printf(prev_keypad_data, cur_keypad_data, &KeyMapStr[0][0]);
#endif
prev_keypad_data = cur_keypad_data;
input_sync(keypad->input);
}
}
//[*]--------------------------------------------------------------------------------------------------[*]
static enum hrtimer_restart odroid_keypad_timer(struct hrtimer *timer)
{
odroid_keypad_t *keypad = container_of(timer, odroid_keypad_t, timer);
odroid_keypad_control(keypad);
hrtimer_start(&keypad->timer, ktime_set(0, KEYPAD_TIMER_PERIOD), HRTIMER_MODE_REL);
return HRTIMER_NORESTART;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_keypad_open(struct input_dev *dev)
{
#if defined(DEBUG_MSG)
printk("%s\n", __FUNCTION__);
#endif
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static void odroid_keypad_close(struct input_dev *dev)
{
#if defined(DEBUG_MSG)
printk("%s\n", __FUNCTION__);
#endif
}
//[*]--------------------------------------------------------------------------------------------------[*]
static void odroid_keypad_release_device(struct device *dev)
{
#if defined(DEBUG_MSG)
printk("%s\n", __FUNCTION__);
#endif
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_keypad_resume(struct platform_device *pdev)
{
odroid_keypad_t *keypad = dev_get_drvdata(&pdev->dev);
#if defined(DEBUG_PM_MSG)
printk("%s\n", __FUNCTION__);
#endif
hrtimer_start(&keypad->timer, ktime_set(0, KEYPAD_TIMER_PERIOD), HRTIMER_MODE_REL);
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int odroid_keypad_suspend(struct platform_device *pdev, pm_message_t state)
{
odroid_keypad_t *keypad = dev_get_drvdata(&pdev->dev);
#if defined(DEBUG_PM_MSG)
printk("%s\n", __FUNCTION__);
#endif
hrtimer_cancel(&keypad->timer);
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static void odroid_keypad_config(odroid_keypad_t *keypad)
{
int i;
// Control GPIO Init
for (i = 0; i < ARRAY_SIZE(sControlGpios); i++) {
if(gpio_request(sControlGpios[i].gpio, sControlGpios[i].name)) {
printk("--------------------------------------------\n");
printk("%s : %s gpio reqest err!\n", __FUNCTION__, sControlGpios[i].name);
printk("--------------------------------------------\n");
}
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);
}
}
hrtimer_start(&keypad->timer, ktime_set(0, KEYPAD_TIMER_PERIOD), HRTIMER_MODE_REL);
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int __devinit odroid_keypad_probe(struct platform_device *pdev)
{
int key, code;
odroid_keypad_t *keypad;
if(!(keypad = kzalloc(sizeof(*keypad), GFP_KERNEL))) return -ENOMEM;
dev_set_drvdata(&pdev->dev, keypad);
if(!(keypad->input = input_allocate_device())) goto err_free_input_mem;
snprintf(keypad->phys, sizeof(keypad->phys), "%s/input0", DEVICE_NAME);
keypad->input->name = DEVICE_NAME;
keypad->input->phys = keypad->phys;
keypad->input->id.bustype = BUS_HOST;
keypad->input->id.vendor = 0x16B4;
keypad->input->id.product = 0x0701;
keypad->input->id.version = 0x0001;
keypad->input->keycode = Keycode;
keypad->input->open = odroid_keypad_open;
keypad->input->close = odroid_keypad_close;
set_bit(EV_KEY, keypad->input->evbit);
#if defined(CONFIG_FB_S5P_S6E8AA1)
set_bit(EV_SW , keypad->input->evbit);
set_bit(SW_LID & SW_MAX, keypad->input->swbit);
#endif
for(key = 0; key < MAX_KEYCODE_CNT; key++){
code = Keycode[key];
if(code <= 0) continue;
set_bit(code & KEY_MAX, keypad->input->keybit);
}
#if defined(CONFIG_FB_S5P_S6E8AA1)
set_bit(KEY_2 & KEY_MAX, keypad->input->keybit);
#endif
if(input_register_device(keypad->input)) {
printk("--------------------------------------------------------\n");
printk("%s input register device fail!!\n", DEVICE_NAME);
printk("--------------------------------------------------------\n");
goto err_free_all;
}
hrtimer_init(&keypad->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
keypad->timer.function = odroid_keypad_timer;
hrtimer_init(&keypad->poweroff_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
keypad->poweroff_timer.function = odroid_poweroff_timer;
#if defined(CONFIG_FB_S5P_S6E8AA1)
hrtimer_init(&keypad->long_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
keypad->long_timer.function = odroid_long_timer;
#endif
odroid_keypad_config(keypad);
#if defined(CONFIG_BOARD_ODROID_X)
if(gpio_request(LED_STATUS_PORT, LED_STATUS_PORT_NAME)) {
printk("%s : %s gpio reqest err!\n", __FUNCTION__, LED_STATUS_PORT_NAME);
}
else {
gpio_direction_output (LED_STATUS_PORT, 1);
s3c_gpio_setpull (LED_STATUS_PORT, S3C_GPIO_PULL_NONE);
}
hrtimer_init(&keypad->led_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
keypad->led_timer.function = odroid_led_timer;
hrtimer_start(&keypad->led_timer, ktime_set(LED_STATUS_PERIOD, 0), HRTIMER_MODE_REL);
#endif
printk("--------------------------------------------------------\n");
printk("%s driver initialized!! Ver 1.0\n", DEVICE_NAME);
printk("--------------------------------------------------------\n");
return 0;
err_free_all:
input_free_device(keypad->input);
err_free_input_mem:
kfree(keypad);
return -ENODEV;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int __devexit odroid_keypad_remove(struct platform_device *pdev)
{
int i;
odroid_keypad_t *keypad = dev_get_drvdata(&pdev->dev);
input_unregister_device(keypad->input);
hrtimer_cancel(&keypad->timer);
dev_set_drvdata(&pdev->dev, NULL);
for (i = 0; i < ARRAY_SIZE(sControlGpios); i++) gpio_free(sControlGpios[i].gpio);
#if defined(CONFIG_BOARD_ODROID_X)
gpio_free(LED_STATUS_PORT);
hrtimer_cancel(&keypad->led_timer);
#endif
#if defined(DEBUG_MSG)
printk("%s\n", __FUNCTION__);
#endif
kfree(keypad);
return 0;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static int __init odroid_keypad_init(void)
{
int ret = platform_driver_register(&odroid_platform_device_driver);
#if defined(DEBUG_MSG)
printk("%s\n", __FUNCTION__);
#endif
if(!ret) {
ret = platform_device_register(&odroid_platform_device);
#if defined(DEBUG_MSG)
printk("platform_driver_register %d \n", ret);
#endif
if(ret) platform_driver_unregister(&odroid_platform_device_driver);
}
return ret;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static void __exit odroid_keypad_exit(void)
{
#if defined(DEBUG_MSG)
printk("%s\n",__FUNCTION__);
#endif
platform_device_unregister(&odroid_platform_device);
platform_driver_unregister(&odroid_platform_device_driver);
}
//[*]--------------------------------------------------------------------------------------------------[*]
|
