MT6755 平台手机皮套驱动实现

是自己写注册一个input device，模仿keypad，在对应的中断处理函数中上报power key的键值。具体实现代码如下：

在

alps/kernel-3.10/drivers/misc/mediatek/keypad/kpd.c文件，添加：

#include <linux/slab.h>

#define KPD_HAS_HALL_FUN

#ifdef KPD_HAS_HALL_FUN //#define HALL_KEY 0 #include <linux/irqchip/mt-eic.h>

#define HALL_EINT_NUM 11

#define HALL_EINT_PIN (GPIO11|0x80000000)

static void kpd_flip_handler(unsigned long data);

static DECLARE_TASKLET(kpd_flip_tasklet, kpd_flip_handler, 0);

static bool kpd_flip_state = true;

#define HALL_CLASS_NAME "hall_class"

#define HALL_DEVICE_NAME "hall_device"

static struct class *hall_class;

static struct device *hall_device;

static unsigned int hall_irq_num;

/* static ssize_t hall_state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { return 0; } */

static ssize_t hall_state_show(struct device *dev, struct device_attribute *attr, char *buf)

{ int hall_state=0;

hall_state = kpd_flip_state+2;

return sprintf(buf, "%d\n", hall_state); }

static DEVICE_ATTR(hall_state, S_IRUGO | S_IWUSR, hall_state_show, NULL);

static struct device_attribute *hall_dev_attributes[] = { &dev_attr_hall_state, };

#endif

#ifdef KPD_HAS_HALL_FUN

static irqreturn_t kpd_flip_eint_handler(int irq, void *dev_id) { tasklet_schedule(&kpd_flip_tasklet); }

static void kpd_flip_handler(unsigned long data) { bool old_state = kpd_flip_state; int Mhall_key_level; int ret = 0;

kpd_flip_state = !kpd_flip_state;

Mhall_key_level = mt_get_gpio_in(HALL_EINT_PIN);

pr_warn("\n chenhaibing kpd_flip_handler report "); #if 1 if (kpd_flip_state) { input_report_switch(kpd_input_dev, SW_LID, 0); pr_warn("\n glove is close! report kpd_flip_state=%d, flip state= %d\n", kpd_flip_state,old_state); } else { input_report_switch(kpd_input_dev, SW_LID, 1); pr_warn("\n glove is open!report kpd_flip_state=%d, flip state= %d\n", kpd_flip_state,old_state); } #endif

input_sync(kpd_input_dev); pr_warn("chenhaibing hall_key_level = %d", Mhall_key_level); pr_warn("chenhaibing hall flip key handler:%d,%d\n",old_state,kpd_flip_state); #ifdef BIRD_HALL_CHANGE_TP_PARAM //gtp_change_param(Mhall_key_level); #endif

if (old_state){ //mt_eint_registration(HALL_EINT_NUM, CUST_EINTF_TRIGGER_HIGH, kpd_flip_eint_handler, false); ret = request_irq(hall_irq_num, (irq_handler_t)kpd_flip_eint_handler, CUST_EINTF_TRIGGER_HIGH, "hall-eint", NULL); if (ret > 0) pr_err("HALL-EINT IRQ LINE NOT AVAILABLE!!\n"); }else{ //mt_eint_registration(HALL_EINT_NUM, CUST_EINTF_TRIGGER_LOW, kpd_flip_eint_handler, false); ret = request_irq(hall_irq_num, (irq_handler_t)kpd_flip_eint_handler, CUST_EINTF_TRIGGER_LOW, "hall-eint", NULL); if (ret > 0) pr_err("HALL-EINT IRQ LINE NOT AVAILABLE!!\n"); } mt_eint_unmask(HALL_EINT_NUM); }

#endif

static int kpd_pdrv_probe(struct platform_device *pdev)

{

#ifdef KPD_HAS_HALL_FUN
__set_bit(EV_SW , kpd_input_dev->evbit);
__set_bit(SW_LID , kpd_input_dev->swbit);
#endif

#ifdef KPD_HAS_HALL_FUN mt_set_gpio_mode(HALL_EINT_PIN, GPIO_MODE_00); mt_set_gpio_dir(HALL_EINT_PIN, GPIO_DIR_IN); mt_set_gpio_pull_enable(HALL_EINT_PIN, GPIO_PULL_ENABLE); mt_set_gpio_pull_select(HALL_EINT_PIN, GPIO_PULL_UP); mt_eint_set_hw_debounce(HALL_EINT_NUM, 0); //mt_eint_registration(HALL_EINT_NUM, CUST_EINTF_TRIGGER_LOW, kpd_flip_eint_handler, false); hall_irq_num = mt_gpio_to_irq(HALL_EINT_NUM); ret = request_irq(hall_irq_num, (irq_handler_t)kpd_flip_eint_handler, CUST_EINTF_TRIGGER_LOW, "hall-eint", NULL); pr_warn("liuyang:request_irq ret = %d,hall_irq = %d\n!", ret, hall_irq_num); if (ret > 0) pr_err("HALL-EINT IRQ LINE NOT AVAILABLE!!\n"); mt_eint_unmask(HALL_EINT_NUM); pr_warn("hall_sensor probe success!"); #endif #ifdef KPD_HAS_HALL_FUN int j; int result; //create a class to avoid event drop by uevent_ops->filter function (dev_uevent_filter()) hall_class = class_create(THIS_MODULE, HALL_CLASS_NAME); if (IS_ERR(hall_class)) { printk("cannot create hall class\n"); // goto exit_class_create_failed; }

#if 0 hall_device = device_create(hall_class, NULL, MKDEV(MISC_MAJOR, MISC_DYNAMIC_MINOR), NULL, HALL_DEVICE_NAME); if (IS_ERR(hall_device)) { printk("cannot create hall device\n"); // goto exit_inv_device_create_failed; } #endif

hall_device = kzalloc(sizeof(struct device), GFP_KERNEL); if (!hall_device) { printk("HZF cannot allocate hall device\n"); goto exit_device_register_failed; } hall_device->init_name = HALL_DEVICE_NAME; hall_device->class = hall_class; hall_device->release = (void (*)(struct device *))kfree; result = device_register(hall_device); if (result) { printk("HZF cannot register hall device\n"); goto exit_device_register_failed; } result = 0; for (j = 0; j < ARRAY_SIZE(hall_dev_attributes); j++) { result = device_create_file(hall_device,hall_dev_attributes[j]); if (result) break; } if (result) { while (--j >= 0) device_remove_file(hall_device, hall_dev_attributes[j]); printk("cannot create hall attr.\n"); goto exit_create_file_failed; } return 0; exit_create_file_failed: device_unregister(hall_device); exit_device_register_failed: class_destroy(hall_class);

#endif return err;

}

完整alps/kernel-3.10/drivers/misc/mediatek/keypad/kpd.c如下：

#include <linux/kpd.h> #ifdef CONFIG_HAS_WAKELOCK #include <linux/wakelock.h> #else #include <linux/pm_wakeup.h> #endif #ifdef CONFIG_OF #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> #endif

#define KPD_NAME "mtk-kpd" #define MTK_KP_WAKESOURCE /* this is for auto set wake up source */

//huangzifan #include <linux/slab.h>

#define KPD_HAS_HALL_FUN

#ifdef KPD_HAS_HALL_FUN //#define HALL_KEY 0 #include <linux/irqchip/mt-eic.h>

#define HALL_EINT_NUM 11 #define HALL_EINT_PIN (GPIO11|0x80000000) static void kpd_flip_handler(unsigned long data); static DECLARE_TASKLET(kpd_flip_tasklet, kpd_flip_handler, 0); static bool kpd_flip_state = true;

#define HALL_CLASS_NAME "hall_class" #define HALL_DEVICE_NAME "hall_device"

static struct class *hall_class; static struct device *hall_device; static unsigned int hall_irq_num; /* static ssize_t hall_state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { return 0; } */ static ssize_t hall_state_show(struct device *dev, struct device_attribute *attr, char *buf) { int hall_state=0; hall_state = kpd_flip_state+2; return sprintf(buf, "%d\n", hall_state); }

static DEVICE_ATTR(hall_state, S_IRUGO | S_IWUSR, hall_state_show, NULL);

static struct device_attribute *hall_dev_attributes[] = { &dev_attr_hall_state, }; #endif #ifdef CONFIG_OF void __iomem *kp_base; static unsigned int kp_irqnr; #endif struct input_dev *kpd_input_dev; static bool kpd_suspend; static int kpd_show_hw_keycode = 1; static int kpd_show_register = 1; static volatile int call_status; #ifdef CONFIG_HAS_WAKELOCK struct wake_lock kpd_suspend_lock; /* For suspend usage */ #else struct wakeup_source kpd_suspend_lock; #endif

/*for kpd_memory_setting() function*/ static u16 kpd_keymap[KPD_NUM_KEYS]; static u16 kpd_keymap_state[KPD_NUM_MEMS]; /***********************************/

/* for slide QWERTY */ #if KPD_HAS_SLIDE_QWERTY static void kpd_slide_handler(unsigned long data); static DECLARE_TASKLET(kpd_slide_tasklet, kpd_slide_handler, 0); static u8 kpd_slide_state = !KPD_SLIDE_POLARITY; #endif #if !defined(CONFIG_MTK_LEGACY) struct keypad_dts_data kpd_dts_data; #endif /* for Power key using EINT */ #if KPD_PWRKEY_USE_EINT static void kpd_pwrkey_handler(unsigned long data); static DECLARE_TASKLET(kpd_pwrkey_tasklet, kpd_pwrkey_handler, 0); #endif

/* for keymap handling */ static void kpd_keymap_handler(unsigned long data); static DECLARE_TASKLET(kpd_keymap_tasklet, kpd_keymap_handler, 0);

/*********************************************************************/ static void kpd_memory_setting(void);

/*********************************************************************/ static int kpd_pdrv_probe(struct platform_device *pdev); static int kpd_pdrv_remove(struct platform_device *pdev); static int kpd_pdrv_suspend(struct platform_device *pdev, pm_message_t state); static int kpd_pdrv_resume(struct platform_device *pdev);

#ifdef CONFIG_OF static const struct of_device_id kpd_of_match[] = { {.compatible = "mediatek,KP",}, {.compatible = "mediatek,mt6755-keypad",}, {}, }; #endif

static struct platform_driver kpd_pdrv = { .probe = kpd_pdrv_probe, .remove = kpd_pdrv_remove, .suspend = kpd_pdrv_suspend, .resume = kpd_pdrv_resume, .driver = { .name = KPD_NAME, .owner = THIS_MODULE, #ifdef CONFIG_OF .of_match_table = kpd_of_match, #endif }, };

/********************************************************************/ static void kpd_memory_setting(void) { kpd_init_keymap(kpd_keymap); kpd_init_keymap_state(kpd_keymap_state); return; }

/*****************for kpd auto set wake up source*************************/

static ssize_t kpd_store_call_state(struct device_driver *ddri, const char *buf, size_t count) { if (sscanf(buf, "%u", &call_status) != 1) { kpd_print("kpd call state: Invalid values\n"); return -EINVAL; }

switch (call_status) { case 1: kpd_print("kpd call state: Idle state!\n"); break; case 2: kpd_print("kpd call state: ringing state!\n"); break; case 3: kpd_print("kpd call state: active or hold state!\n"); break;

default: kpd_print("kpd call state: Invalid values\n"); break; } return count; }

static ssize_t kpd_show_call_state(struct device_driver *ddri, char *buf) { ssize_t res; res = snprintf(buf, PAGE_SIZE, "%d\n", call_status); return res; }

static DRIVER_ATTR(kpd_call_state, S_IWUSR | S_IRUGO, kpd_show_call_state, kpd_store_call_state);

static struct driver_attribute *kpd_attr_list[] = { &driver_attr_kpd_call_state, };

/*----------------------------------------------------------------------------*/ static int kpd_create_attr(struct device_driver *driver) { int idx, err = 0; int num = (int)(sizeof(kpd_attr_list) / sizeof(kpd_attr_list[0])); if (driver == NULL) return -EINVAL;

for (idx = 0; idx < num; idx++) { err = driver_create_file(driver, kpd_attr_list[idx]); if (err) { kpd_info("driver_create_file (%s) = %d\n", kpd_attr_list[idx]->attr.name, err); break; } } return err; }

/*----------------------------------------------------------------------------*/ static int kpd_delete_attr(struct device_driver *driver) { int idx, err = 0; int num = (int)(sizeof(kpd_attr_list) / sizeof(kpd_attr_list[0]));

if (!driver) return -EINVAL;

for (idx = 0; idx < num; idx++) driver_remove_file(driver, kpd_attr_list[idx]);

return err; }

/*----------------------------------------------------------------------------*/ /********************************************************************************************/ /************************************************************************************************************************************************/ /* for autotest */ #if KPD_AUTOTEST static const u16 kpd_auto_keymap[] = { KEY_MENU, KEY_HOME, KEY_BACK, KEY_CALL, KEY_ENDCALL, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_FOCUS, KEY_CAMERA, }; #endif /* for AEE manual dump */ #define AEE_VOLUMEUP_BIT 0 #define AEE_VOLUMEDOWN_BIT 1 #define AEE_DELAY_TIME 15 /* enable volup + voldown was pressed 5~15 s Trigger aee manual dump */ #define AEE_ENABLE_5_15 1 static struct hrtimer aee_timer; static unsigned long aee_pressed_keys; static bool aee_timer_started;

#if AEE_ENABLE_5_15 #define AEE_DELAY_TIME_5S 5 static struct hrtimer aee_timer_5s; static bool aee_timer_5s_started; static bool flags_5s; #endif

static inline void kpd_update_aee_state(void) { if (aee_pressed_keys == ((1 << AEE_VOLUMEUP_BIT) | (1 << AEE_VOLUMEDOWN_BIT))) { /* if volumeup and volumedown was pressed the same time then start the time of ten seconds */ aee_timer_started = true;

#if AEE_ENABLE_5_15 aee_timer_5s_started = true; hrtimer_start(&aee_timer_5s, ktime_set(AEE_DELAY_TIME_5S, 0), HRTIMER_MODE_REL); #endif hrtimer_start(&aee_timer, ktime_set(AEE_DELAY_TIME, 0), HRTIMER_MODE_REL); kpd_print("aee_timer started\n"); } else { if (aee_timer_started) { /* * hrtimer_cancel - cancel a timer and wait for the handler to finish. * Returns: * 0 when the timer was not active. * 1 when the timer was active. */ if (hrtimer_cancel(&aee_timer)) { kpd_print("try to cancel hrtimer\n"); #if AEE_ENABLE_5_15 if (flags_5s) { kpd_print("Pressed Volup + Voldown5s~15s then trigger aee manual dump.\n"); aee_kernel_reminding("manual dump", "Trigger Vol Up +Vol Down 5s"); } #endif

} #if AEE_ENABLE_5_15 flags_5s = false; #endif aee_timer_started = false; kpd_print("aee_timer canceled\n"); } #if AEE_ENABLE_5_15 if (aee_timer_5s_started) { /* * hrtimer_cancel - cancel a timer and wait for the handler to finish. * Returns: * 0 when the timer was not active. * 1 when the timer was active. */ if (hrtimer_cancel(&aee_timer_5s)) kpd_print("try to cancel hrtimer (5s)\n"); aee_timer_5s_started = false; kpd_print("aee_timer canceled (5s)\n"); } #endif } }

static void kpd_aee_handler(u32 keycode, u16 pressed) { if (pressed) { if (keycode == KEY_VOLUMEUP) __set_bit(AEE_VOLUMEUP_BIT, &aee_pressed_keys); else if (keycode == KEY_VOLUMEDOWN) __set_bit(AEE_VOLUMEDOWN_BIT, &aee_pressed_keys); else return; kpd_update_aee_state(); } else { if (keycode == KEY_VOLUMEUP) __clear_bit(AEE_VOLUMEUP_BIT, &aee_pressed_keys); else if (keycode == KEY_VOLUMEDOWN) __clear_bit(AEE_VOLUMEDOWN_BIT, &aee_pressed_keys); else return; kpd_update_aee_state(); } }

static enum hrtimer_restart aee_timer_func(struct hrtimer *timer) { /* kpd_info("kpd: vol up+vol down AEE manual dump!\n"); */ /* aee_kernel_reminding("manual dump ", "Triggered by press KEY_VOLUMEUP+KEY_VOLUMEDOWN"); */ aee_trigger_kdb(); return HRTIMER_NORESTART; }

#if AEE_ENABLE_5_15 static enum hrtimer_restart aee_timer_5s_func(struct hrtimer *timer) {

/* kpd_info("kpd: vol up+vol down AEE manual dump timer 5s !\n"); */ flags_5s = true; return HRTIMER_NORESTART; } #endif

/************************************************************************/

#if KPD_HAS_SLIDE_QWERTY static void kpd_slide_handler(unsigned long data) { bool slid; u8 old_state = kpd_slide_state;

kpd_slide_state = !kpd_slide_state; slid = (kpd_slide_state == !!KPD_SLIDE_POLARITY); /* for SW_LID, 1: lid open => slid, 0: lid shut => closed */ input_report_switch(kpd_input_dev, SW_LID, slid); input_sync(kpd_input_dev); kpd_print("report QWERTY = %s\n", slid ? "slid" : "closed");

if (old_state) mt_set_gpio_pull_select(GPIO_QWERTYSLIDE_EINT_PIN, 0); else mt_set_gpio_pull_select(GPIO_QWERTYSLIDE_EINT_PIN, 1); /* for detecting the return to old_state */ mt65xx_eint_set_polarity(KPD_SLIDE_EINT, old_state); mt65xx_eint_unmask(KPD_SLIDE_EINT); }

static void kpd_slide_eint_handler(void) { tasklet_schedule(&kpd_slide_tasklet); } #endif

#if KPD_PWRKEY_USE_EINT static void kpd_pwrkey_handler(unsigned long data) { kpd_pwrkey_handler_hal(data); }

static void kpd_pwrkey_eint_handler(void) { tasklet_schedule(&kpd_pwrkey_tasklet); } #endif /*********************************************************************/

/*********************************************************************/ #if KPD_PWRKEY_USE_PMIC void kpd_pwrkey_pmic_handler(unsigned long pressed) { kpd_print("Power Key generate, pressed=%ld\n", pressed); if (!kpd_input_dev) { kpd_print("KPD input device not ready\n"); return; } kpd_pmic_pwrkey_hal(pressed); } #endif

void kpd_pmic_rstkey_handler(unsigned long pressed) { kpd_print("PMIC reset Key generate, pressed=%ld\n", pressed); if (!kpd_input_dev) { kpd_print("KPD input device not ready\n"); return; } kpd_pmic_rstkey_hal(pressed); #ifdef KPD_PMIC_RSTKEY_MAP kpd_aee_handler(KPD_PMIC_RSTKEY_MAP, pressed); #endif }

/*********************************************************************/

/*********************************************************************/ static void kpd_keymap_handler(unsigned long data) { int i, j; bool pressed; u16 new_state[KPD_NUM_MEMS], change, mask; u16 hw_keycode, linux_keycode; kpd_get_keymap_state(new_state); #ifdef CONFIG_HAS_WAKELOCK wake_lock_timeout(&kpd_suspend_lock, HZ / 2); #else __pm_wakeup_event(&kpd_suspend_lock, 500); #endif

for (i = 0; i < KPD_NUM_MEMS; i++) { change = new_state[i] ^ kpd_keymap_state[i]; if (!change) continue;

for (j = 0; j < 16; j++) { mask = 1U << j; if (!(change & mask)) continue;

hw_keycode = (i << 4) + j; /* bit is 1: not pressed, 0: pressed */ pressed = !(new_state[i] & mask); if (kpd_show_hw_keycode) kpd_print("(%s) HW keycode = %u\n", pressed ? "pressed" : "released", hw_keycode); BUG_ON(hw_keycode >= KPD_NUM_KEYS); linux_keycode = kpd_keymap[hw_keycode]; if (unlikely(linux_keycode == 0)) { kpd_print("Linux keycode = 0\n"); continue; } kpd_aee_handler(linux_keycode, pressed);

kpd_backlight_handler(pressed, linux_keycode); input_report_key(kpd_input_dev, linux_keycode, pressed); input_sync(kpd_input_dev); kpd_print("report Linux keycode = %u\n", linux_keycode); } }

memcpy(kpd_keymap_state, new_state, sizeof(new_state)); kpd_print("save new keymap state\n"); #ifdef CONFIG_OF enable_irq(kp_irqnr); #else enable_irq(MT_KP_IRQ_ID); #endif }

static irqreturn_t kpd_irq_handler(int irq, void *dev_id) { /* use _nosync to avoid deadlock */ #ifdef CONFIG_OF disable_irq_nosync(kp_irqnr); #else disable_irq_nosync(MT_KP_IRQ_ID); #endif tasklet_schedule(&kpd_keymap_tasklet); return IRQ_HANDLED; }

/*********************************************************************/

/*****************************************************************************************/ long kpd_dev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { /* void __user *uarg = (void __user *)arg; */

switch (cmd) { #if KPD_AUTOTEST case PRESS_OK_KEY: /* KPD_AUTOTEST disable auto test setting to resolve CR ALPS00464496 */ if (test_bit(KEY_OK, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS OK KEY!!\n"); input_report_key(kpd_input_dev, KEY_OK, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support OK KEY!!\n"); } break; case RELEASE_OK_KEY: if (test_bit(KEY_OK, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE OK KEY!!\n"); input_report_key(kpd_input_dev, KEY_OK, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support OK KEY!!\n"); } break; case PRESS_MENU_KEY: if (test_bit(KEY_MENU, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS MENU KEY!!\n"); input_report_key(kpd_input_dev, KEY_MENU, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support MENU KEY!!\n"); } break; case RELEASE_MENU_KEY: if (test_bit(KEY_MENU, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE MENU KEY!!\n"); input_report_key(kpd_input_dev, KEY_MENU, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support MENU KEY!!\n"); }

break; case PRESS_UP_KEY: if (test_bit(KEY_UP, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS UP KEY!!\n"); input_report_key(kpd_input_dev, KEY_UP, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support UP KEY!!\n"); } break; case RELEASE_UP_KEY: if (test_bit(KEY_UP, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE UP KEY!!\n"); input_report_key(kpd_input_dev, KEY_UP, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support UP KEY!!\n"); } break; case PRESS_DOWN_KEY: if (test_bit(KEY_DOWN, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS DOWN KEY!!\n"); input_report_key(kpd_input_dev, KEY_DOWN, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support DOWN KEY!!\n"); } break; case RELEASE_DOWN_KEY: if (test_bit(KEY_DOWN, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE DOWN KEY!!\n"); input_report_key(kpd_input_dev, KEY_DOWN, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support DOWN KEY!!\n"); } break; case PRESS_LEFT_KEY: if (test_bit(KEY_LEFT, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS LEFT KEY!!\n"); input_report_key(kpd_input_dev, KEY_LEFT, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support LEFT KEY!!\n"); } break; case RELEASE_LEFT_KEY: if (test_bit(KEY_LEFT, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE LEFT KEY!!\n"); input_report_key(kpd_input_dev, KEY_LEFT, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support LEFT KEY!!\n"); } break;

case PRESS_RIGHT_KEY: if (test_bit(KEY_RIGHT, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS RIGHT KEY!!\n"); input_report_key(kpd_input_dev, KEY_RIGHT, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support RIGHT KEY!!\n"); } break; case RELEASE_RIGHT_KEY: if (test_bit(KEY_RIGHT, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE RIGHT KEY!!\n"); input_report_key(kpd_input_dev, KEY_RIGHT, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support RIGHT KEY!!\n"); } break; case PRESS_HOME_KEY: if (test_bit(KEY_HOME, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS HOME KEY!!\n"); input_report_key(kpd_input_dev, KEY_HOME, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support HOME KEY!!\n"); } break; case RELEASE_HOME_KEY: if (test_bit(KEY_HOME, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE HOME KEY!!\n"); input_report_key(kpd_input_dev, KEY_HOME, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support HOME KEY!!\n"); } break; case PRESS_BACK_KEY: if (test_bit(KEY_BACK, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS BACK KEY!!\n"); input_report_key(kpd_input_dev, KEY_BACK, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support BACK KEY!!\n"); } break; case RELEASE_BACK_KEY: if (test_bit(KEY_BACK, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE BACK KEY!!\n"); input_report_key(kpd_input_dev, KEY_BACK, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support BACK KEY!!\n"); } break; case PRESS_CALL_KEY: if (test_bit(KEY_CALL, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS CALL KEY!!\n"); input_report_key(kpd_input_dev, KEY_CALL, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support CALL KEY!!\n"); } break; case RELEASE_CALL_KEY: if (test_bit(KEY_CALL, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE CALL KEY!!\n"); input_report_key(kpd_input_dev, KEY_CALL, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support CALL KEY!!\n"); } break;

case PRESS_ENDCALL_KEY: if (test_bit(KEY_ENDCALL, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS ENDCALL KEY!!\n"); input_report_key(kpd_input_dev, KEY_ENDCALL, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support ENDCALL KEY!!\n"); } break; case RELEASE_ENDCALL_KEY: if (test_bit(KEY_ENDCALL, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE ENDCALL KEY!!\n"); input_report_key(kpd_input_dev, KEY_ENDCALL, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support ENDCALL KEY!!\n"); } break; case PRESS_VLUP_KEY: if (test_bit(KEY_VOLUMEUP, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS VOLUMEUP KEY!!\n"); input_report_key(kpd_input_dev, KEY_VOLUMEUP, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support VOLUMEUP KEY!!\n"); } break; case RELEASE_VLUP_KEY: if (test_bit(KEY_VOLUMEUP, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE VOLUMEUP KEY!!\n"); input_report_key(kpd_input_dev, KEY_VOLUMEUP, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support VOLUMEUP KEY!!\n"); } break; case PRESS_VLDOWN_KEY: if (test_bit(KEY_VOLUMEDOWN, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS VOLUMEDOWN KEY!!\n"); input_report_key(kpd_input_dev, KEY_VOLUMEDOWN, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support VOLUMEDOWN KEY!!\n"); } break; case RELEASE_VLDOWN_KEY: if (test_bit(KEY_VOLUMEDOWN, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE VOLUMEDOWN KEY!!\n"); input_report_key(kpd_input_dev, KEY_VOLUMEDOWN, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support VOLUMEDOWN KEY!!\n"); } break; case PRESS_FOCUS_KEY: if (test_bit(KEY_FOCUS, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS FOCUS KEY!!\n"); input_report_key(kpd_input_dev, KEY_FOCUS, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support FOCUS KEY!!\n"); } break; case RELEASE_FOCUS_KEY: if (test_bit(KEY_FOCUS, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE FOCUS KEY!!\n"); input_report_key(kpd_input_dev, KEY_FOCUS, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support RELEASE KEY!!\n"); } break; case PRESS_CAMERA_KEY: if (test_bit(KEY_CAMERA, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS CAMERA KEY!!\n"); input_report_key(kpd_input_dev, KEY_CAMERA, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support CAMERA KEY!!\n"); } break; case RELEASE_CAMERA_KEY: if (test_bit(KEY_CAMERA, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE CAMERA KEY!!\n"); input_report_key(kpd_input_dev, KEY_CAMERA, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support CAMERA KEY!!\n"); } break; case PRESS_POWER_KEY: if (test_bit(KEY_POWER, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] PRESS POWER KEY!!\n"); input_report_key(kpd_input_dev, KEY_POWER, 1); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support POWER KEY!!\n"); } break; case RELEASE_POWER_KEY: if (test_bit(KEY_POWER, kpd_input_dev->keybit)) { kpd_print("[AUTOTEST] RELEASE POWER KEY!!\n"); input_report_key(kpd_input_dev, KEY_POWER, 0); input_sync(kpd_input_dev); } else { kpd_print("[AUTOTEST] Not Support POWER KEY!!\n"); } break; #endif

case SET_KPD_KCOL: kpd_auto_test_for_factorymode(); /* API 3 for kpd factory mode auto-test */ kpd_print("[kpd_auto_test_for_factorymode] test performed!!\n"); break; default: return -EINVAL; }

return 0; }

int kpd_dev_open(struct inode *inode, struct file *file) { return 0; }

static const struct file_operations kpd_dev_fops = { .owner = THIS_MODULE, .unlocked_ioctl = kpd_dev_ioctl, .open = kpd_dev_open, };

/*********************************************************************/ static struct miscdevice kpd_dev = { .minor = MISC_DYNAMIC_MINOR, .name = KPD_NAME, .fops = &kpd_dev_fops, };

static int kpd_open(struct input_dev *dev) { kpd_slide_qwerty_init(); /* API 1 for kpd slide qwerty init settings */ return 0; }

#ifdef KPD_HAS_HALL_FUN

static irqreturn_t kpd_flip_eint_handler(int irq, void *dev_id) { tasklet_schedule(&kpd_flip_tasklet); }

static void kpd_flip_handler(unsigned long data) { bool old_state = kpd_flip_state; int Mhall_key_level; int ret = 0;

kpd_flip_state = !kpd_flip_state;

Mhall_key_level = mt_get_gpio_in(HALL_EINT_PIN);

#endif

#if !defined(CONFIG_MTK_LEGACY) void kpd_get_dts_info(void) { struct device_node *node; node = of_find_compatible_node(NULL, NULL, "mediatek, kpd"); if (node) { of_property_read_u32(node, "kpd-key-debounce", &kpd_dts_data.kpd_key_debounce); of_property_read_u32(node, "kpd-sw-pwrkey", &kpd_dts_data.kpd_sw_pwrkey); of_property_read_u32(node, "kpd-hw-pwrkey", &kpd_dts_data.kpd_hw_pwrkey); of_property_read_u32(node, "kpd-sw-rstkey", &kpd_dts_data.kpd_sw_rstkey); of_property_read_u32(node, "kpd-hw-rstkey", &kpd_dts_data.kpd_hw_rstkey); of_property_read_u32(node, "kpd-use-extend-type", &kpd_dts_data.kpd_use_extend_type); of_property_read_u32(node, "kpd-pwrkey-eint-gpio", &kpd_dts_data.kpd_pwrkey_eint_gpio); of_property_read_u32(node, "kpd-pwrkey-gpio-din", &kpd_dts_data.kpd_pwrkey_gpio_din); of_property_read_u32(node, "kpd-hw-dl-key1", &kpd_dts_data.kpd_hw_dl_key1); of_property_read_u32(node, "kpd-hw-dl-key2", &kpd_dts_data.kpd_hw_dl_key2); of_property_read_u32(node, "kpd-hw-dl-key3", &kpd_dts_data.kpd_hw_dl_key3); of_property_read_u32(node, "kpd-hw-recovery-key", &kpd_dts_data.kpd_hw_recovery_key); of_property_read_u32(node, "kpd-hw-factory-key", &kpd_dts_data.kpd_hw_factory_key); of_property_read_u32_array(node, "kpd-hw-init-map", kpd_dts_data.kpd_hw_init_map, ARRAY_SIZE(kpd_dts_data.kpd_hw_init_map));

kpd_info ("key-debounce = %d, sw-pwrkey = %d, hw-pwrkey = %d, hw-rstkey = %d, sw-rstkey = %d\n", kpd_dts_data.kpd_key_debounce, kpd_dts_data.kpd_sw_pwrkey, kpd_dts_data.kpd_hw_pwrkey, kpd_dts_data.kpd_hw_rstkey, kpd_dts_data.kpd_sw_rstkey); } else { kpd_info("[kpd]%s can't find compatible custom node\n", __func__); } } #endif static int kpd_pdrv_probe(struct platform_device *pdev) {

int i, r; int err = 0; int ret = 0; kpd_info("Keypad probe start!!!\n"); #ifdef CONFIG_OF kp_base = of_iomap(pdev->dev.of_node, 0); if (!kp_base) { kpd_info("KP iomap failed\n"); return -ENODEV; };

kp_irqnr = irq_of_parse_and_map(pdev->dev.of_node, 0); if (!kp_irqnr) { kpd_info("KP get irqnr failed\n"); return -ENODEV; } kpd_info("kp base: 0x%p, addr:0x%p, kp irq: %d\n", kp_base, &kp_base, kp_irqnr); #endif #if defined(CONFIG_MTK_LEGACY) /*This not need now */ #ifdef CONFIG_MTK_LDVT kpd_ldvt_test_init(); /* API 2 for kpd LFVT test enviroment settings */ #endif #endif /* initialize and register input device (/dev/input/eventX) */ kpd_input_dev = input_allocate_device(); if (!kpd_input_dev) return -ENOMEM;

kpd_input_dev->name = KPD_NAME; kpd_input_dev->id.bustype = BUS_HOST; kpd_input_dev->id.vendor = 0x2454; kpd_input_dev->id.product = 0x6500; kpd_input_dev->id.version = 0x0010; kpd_input_dev->open = kpd_open; #if !defined(CONFIG_MTK_LEGACY) kpd_get_dts_info(); #endif /* fulfill custom settings */ kpd_memory_setting();

__set_bit(EV_KEY, kpd_input_dev->evbit);

#ifdef KPD_HAS_HALL_FUN __set_bit(EV_SW , kpd_input_dev->evbit); __set_bit(SW_LID , kpd_input_dev->swbit); #endif #if (KPD_PWRKEY_USE_EINT || KPD_PWRKEY_USE_PMIC) #if !defined(CONFIG_MTK_LEGACY) __set_bit(kpd_dts_data.kpd_sw_pwrkey, kpd_input_dev->keybit); #else __set_bit(KPD_PWRKEY_MAP, kpd_input_dev->keybit); #endif kpd_keymap[8] = 0; #endif #if !defined(CONFIG_MTK_LEGACY) if (!kpd_dts_data.kpd_use_extend_type) { for (i = 17; i < KPD_NUM_KEYS; i += 9) /* only [8] works for Power key */ kpd_keymap[i] = 0; } #else #if !KPD_USE_EXTEND_TYPE for (i = 17; i < KPD_NUM_KEYS; i += 9) /* only [8] works for Power key */ kpd_keymap[i] = 0; #endif #endif for (i = 0; i < KPD_NUM_KEYS; i++) { if (kpd_keymap[i] != 0) __set_bit(kpd_keymap[i], kpd_input_dev->keybit); }

#if KPD_AUTOTEST for (i = 0; i < ARRAY_SIZE(kpd_auto_keymap); i++) __set_bit(kpd_auto_keymap[i], kpd_input_dev->keybit); #endif

#if KPD_HAS_SLIDE_QWERTY __set_bit(EV_SW, kpd_input_dev->evbit); __set_bit(SW_LID, kpd_input_dev->swbit); #endif #if !defined(CONFIG_MTK_LEGACY) if (kpd_dts_data.kpd_sw_rstkey) __set_bit(kpd_dts_data.kpd_sw_rstkey, kpd_input_dev->keybit); #else #ifdef KPD_PMIC_RSTKEY_MAP __set_bit(KPD_PMIC_RSTKEY_MAP, kpd_input_dev->keybit); #endif #endif #ifdef KPD_KEY_MAP __set_bit(KPD_KEY_MAP, kpd_input_dev->keybit); #endif

#ifdef CONFIG_MTK_MRDUMP_KEY __set_bit(KEY_RESTART, kpd_input_dev->keybit); #endif

kpd_input_dev->dev.parent = &pdev->dev; r = input_register_device(kpd_input_dev); if (r) { kpd_info("register input device failed (%d)\n", r); input_free_device(kpd_input_dev); return r; }

/* register device (/dev/mt6575-kpd) */ kpd_dev.parent = &pdev->dev; r = misc_register(&kpd_dev); if (r) { kpd_info("register device failed (%d)\n", r); input_unregister_device(kpd_input_dev); return r; } #ifdef CONFIG_HAS_WAKELOCK wake_lock_init(&kpd_suspend_lock, WAKE_LOCK_SUSPEND, "kpd wakelock"); #else wakeup_source_init(&kpd_suspend_lock, "kpd wakelock"); #endif

/* register IRQ and EINT */ #if !defined(CONFIG_MTK_LEGACY) kpd_set_debounce(kpd_dts_data.kpd_key_debounce); #else kpd_set_debounce(KPD_KEY_DEBOUNCE); #endif #ifdef CONFIG_OF r = request_irq(kp_irqnr, kpd_irq_handler, IRQF_TRIGGER_NONE, KPD_NAME, NULL); #else r = request_irq(MT_KP_IRQ_ID, kpd_irq_handler, IRQF_TRIGGER_FALLING, KPD_NAME, NULL); #endif if (r) { kpd_info("register IRQ failed (%d)\n", r); misc_deregister(&kpd_dev); input_unregister_device(kpd_input_dev); return r; } mt_eint_register();

#ifndef KPD_EARLY_PORTING /*add for avoid early porting build err the macro is defined in custom file */ long_press_reboot_function_setting(); /* /API 4 for kpd long press reboot function setting */ #endif hrtimer_init(&aee_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); aee_timer.function = aee_timer_func;

#if AEE_ENABLE_5_15 hrtimer_init(&aee_timer_5s, CLOCK_MONOTONIC, HRTIMER_MODE_REL); aee_timer_5s.function = aee_timer_5s_func; #endif err = kpd_create_attr(&kpd_pdrv.driver); if (err) { kpd_info("create attr file fail\n"); kpd_delete_attr(&kpd_pdrv.driver); return err; } kpd_info("%s Done\n", __func__); #ifdef KPD_HAS_HALL_FUN mt_set_gpio_mode(HALL_EINT_PIN, GPIO_MODE_00); mt_set_gpio_dir(HALL_EINT_PIN, GPIO_DIR_IN); mt_set_gpio_pull_enable(HALL_EINT_PIN, GPIO_PULL_ENABLE); mt_set_gpio_pull_select(HALL_EINT_PIN, GPIO_PULL_UP); mt_eint_set_hw_debounce(HALL_EINT_NUM, 0); //mt_eint_registration(HALL_EINT_NUM, CUST_EINTF_TRIGGER_LOW, kpd_flip_eint_handler, false); hall_irq_num = mt_gpio_to_irq(HALL_EINT_NUM); ret = request_irq(hall_irq_num, (irq_handler_t)kpd_flip_eint_handler, CUST_EINTF_TRIGGER_LOW, "hall-eint", NULL); pr_warn("liuyang:request_irq ret = %d,hall_irq = %d\n!", ret, hall_irq_num); if (ret > 0) pr_err("HALL-EINT IRQ LINE NOT AVAILABLE!!\n"); mt_eint_unmask(HALL_EINT_NUM); pr_warn("hall_sensor probe success!"); #endif #ifdef KPD_HAS_HALL_FUN int j; int result; //create a class to avoid event drop by uevent_ops->filter function (dev_uevent_filter()) hall_class = class_create(THIS_MODULE, HALL_CLASS_NAME); if (IS_ERR(hall_class)) { printk("cannot create hall class\n"); // goto exit_class_create_failed; }

#endif return err; }

/* should never be called */ static int kpd_pdrv_remove(struct platform_device *pdev) { return 0; }

static int kpd_pdrv_suspend(struct platform_device *pdev, pm_message_t state) { kpd_suspend = true; #ifdef MTK_KP_WAKESOURCE if (call_status == 2) { kpd_print("kpd_pdrv_suspend wake up source enable!! (%d)\n", kpd_suspend); } else { kpd_wakeup_src_setting(0); kpd_print("kpd_pdrv_suspend wake up source disable!! (%d)\n", kpd_suspend); } #endif kpd_disable_backlight(); kpd_print("suspend!! (%d)\n", kpd_suspend); return 0; }

static int kpd_pdrv_resume(struct platform_device *pdev) { kpd_suspend = false; #ifdef MTK_KP_WAKESOURCE if (call_status == 2) { kpd_print("kpd_pdrv_suspend wake up source enable!! (%d)\n", kpd_suspend); } else { kpd_print("kpd_pdrv_suspend wake up source resume!! (%d)\n", kpd_suspend); kpd_wakeup_src_setting(1); } #endif kpd_print("resume!! (%d)\n", kpd_suspend); return 0; }

#ifdef CONFIG_MTK_SMARTBOOK_SUPPORT #ifdef CONFIG_HAS_SBSUSPEND static struct sb_handler kpd_sb_handler_desc = { .level = SB_LEVEL_DISABLE_KEYPAD, .plug_in = sb_kpd_enable, .plug_out = sb_kpd_disable, }; #endif #endif

static int __init kpd_mod_init(void) { int r;

r = platform_driver_register(&kpd_pdrv); if (r) { kpd_info("register driver failed (%d)\n", r); return r; }

#ifdef CONFIG_MTK_SMARTBOOK_SUPPORT #ifdef CONFIG_HAS_SBSUSPEND register_sb_handler(&kpd_sb_handler_desc); #endif #endif

return 0; }

/* should never be called */ static void __exit kpd_mod_exit(void) { }

module_init(kpd_mod_init); module_exit(kpd_mod_exit);

module_param(kpd_show_hw_keycode, int, 0644); module_param(kpd_show_register, int, 0644);

MODULE_AUTHOR("yucong.xiong <yucong.xiong@mediatek.com>"); MODULE_DESCRIPTION("MTK Keypad (KPD) Driver v0.4"); MODULE_LICENSE("GPL");

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