IMX6绉绘�峀inux3.0.35鍐呮牳鏃堕渶瑕佹坊鍔犵殑鐭╅樀鎸夐敭鐨勫钩鍙拌�惧�囦俊鎭�

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銆�銆�鏈�鏂囪�板綍鍦↖MX6寮�鍙戞澘涓婄Щ妞嶉紟鑺疞inux3.0.35鍐呮牳鏃讹紝闇�瑕侀厤缃�鐨勭煩闃垫寜閿�鐨勪俊鎭�銆傛湰璁惧�囦娇鐢ㄧ殑鐭╅樀鎸夐敭鏄�涓�涓�5*5鐨勭煩闃垫寜閿�銆�
銆�銆�1銆両MX6绉绘��3.0.35鍐呮牳鏃堕渶瑕侀厤缃�鐨勬寜閿�鐨勪俊鎭�
銆�銆�棣栧厛鎴戜滑瑕佺煡閬撴垜浠�鐨勬寜閿�鎺ョ殑鏍稿績鏉跨殑寮曡剼閮芥湁鍝�浜涳細

銆�銆�3.0.35鍐呮牳涓�浣跨敤鐨勭煩闃垫寜閿�椹卞姩婧愮爜鍦ㄢ�漝rivers/input/keyboard/matrix_keypad.c鈥濅腑銆�
銆�銆�閲岄潰鏄�涓�涓�骞冲彴椹卞姩锛屾垜浠�鍙�瑕佸啓骞冲彴璁惧�囷紝鎻忚堪纭�浠剁殑璧勬簮涓庢�ら┍鍔ㄥ尮閰嶅嵆鍙�銆�
銆�銆�椹卞姩涓�鏈変唬鐮佸�備笅锛�

[AppleScript] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

 static struct platform_driver matrix_keypad_driver = {
probe      = matrix_keypad_probe,
remove     = __devexit_p(matrix_keypad_remove),
driver     = {
name   = "matrix-keypad",
owner  = THIS_MODULE,
#ifdef CONFIG_PM
pm = &matrix_keypad_pm_ops,
#endif
},
};
module_platform_driver(matrix_keypad_driver);

銆�銆�閫氳繃闃呰�诲钩鍙伴┍鍔ㄧ殑probe鍑芥暟锛屽彲寰楃煡鎴戜滑鍐欑殑骞冲彴璁惧�囧簲鎻愪緵鍏锋湰鍝�浜涚‖浠朵俊鎭�.
銆�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

static int __devinit matrix_keypad_probe(struct platform_device *pdev)
{
const struct matrix_keypad_platform_data *pdata; //骞冲彴璁惧�囨彁渚涚殑platform_data
const struct matrix_keymap_data *keymap_data;
struct matrix_keypad *keypad;
struct input_dev *input_dev;
unsigned short *keycodes;
unsigned int row_shift;
int err;

pdata = pdev->dev.platform_data;
    ... .....
keymap_data = pdata->keymap_data;

    ... .....
matrix_keypad_build_keymap(keymap_data, row_shift,
input_dev->keycode, input_dev->keybit); //浠巏eymap_data閲屽垎瑙ｅ嚭琛屽垪閿�瀵瑰簲鐨勯敭鐮�
    ... .....
err = init_matrix_gpio(pdev, keypad); //娉ㄥ唽琛岀嚎鐨勪腑鏂�鍙�
    ... .....
err = input_register_device(keypad->input_dev); //杈撳叆璁惧�囧�硅薄娉ㄥ唽
    ... .....
return err;
}

銆�銆�閫氳繃probe鍑芥暟锛屽彲浠ョ‘瀹氭垜浠�鍐欏钩鍙拌�惧�囨椂鍙�闇�閫氳繃platform_data鎴愬憳鎻愪緵骞冲彴椹卞姩鎵�闇�鐨勪俊鎭�锛屾棤闇�鍐嶆彁渚況esource.
銆�銆�鍐嶇‘瀹氱粨鏋勪綋matrix_keypad_platform_data鐨勬瘡涓�鎴愬憳鐨勪綔鐢ㄥ嵆鍙�锛屽�備笉娓呮�氬叿浣撶敤閫旓紝鍙�浠ュ湪椹卞姩浠ｇ爜閲岄�氳繃鏌ョ湅瀵规垚鍛樺�肩殑璁块棶鍙嶆帹鍑虹敤閫�.
銆�銆�鍦�"include/linux/input/matrix_keypad.h"涓�鏈�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

#define KEY(row, col, val)  ((((row) & (MATRIX_MAX_ROWS - 1)) << 24) |\
                 (((col) & (MATRIX_MAX_COLS - 1)) << 16) |\
                 ((val) & 0xffff))
.....
#define KEY_ROW(k)      (((k) >> 24) & 0xff)
#define KEY_COL(k)      (((k) >> 16) & 0xff)
#define KEY_VAL(k)      ((k) & 0xffff)
.....
.....
#define MATRIX_SCAN_CODE(row, col, row_shift)   (((row) << (row_shift)) + (col))


......
......
struct matrix_keymap_data {
    const uint32_t *keymap; //瑁呰浇鎸夐敭瀵瑰簲鐨勯敭鐮佹暟缁�, 娉ㄦ剰姣忎釜閿�鐮侀渶瑕佷娇鐢ㄥ畯KEY鏉ュ啓銆備篃灏辨槸涓�涓�32浣嶆暟鎹�閲岋紝琛岋紝鍒楋紝閿�鐮佸悇鍗犵敤8, 8, 16浣�.
    unsigned int    keymap_size; //閿�鐮佹暟缁勭殑鍏冪礌涓�鏁�
};
......
......
struct matrix_keypad_platform_data {
    const struct matrix_keymap_data *keymap_data; //閿�鐮佹暟鎹�瀵硅薄鐨勯�栧湴鍧�

    const unsigned int *row_gpios; //琛岀嚎鐢ㄧ殑IO鍙�
    const unsigned int *col_gpios; //鍒楃嚎鐢ㄧ殑IO鍙�

    unsigned int    num_row_gpios; //澶氬皯涓�琛岀嚎
    unsigned int    num_col_gpios; //澶氬皯涓�鍒楃嚎

    unsigned int    col_scan_delay_us; //鎵�鎻忓垪绾挎椂闂撮殧鏃堕棿

    unsigned int    debounce_ms; //闃叉姈鍔ㄧ殑闂撮殧鏃堕棿

    unsigned int    clustered_irq; //琛岀嚎鏄�鍚﹀叡鐢ㄤ竴涓�涓�鏂�, 璁�0鍒欐瘡涓�琛岀嚎鐨勪腑鏂�鏄�鐙�绔嬬殑
    unsigned int    clustered_irq_flags;

    bool        active_low; //閿�鎸変笅鏃讹紝琛岀嚎鏄�鍚︿负浣庣數骞�
    bool        wakeup;
    bool        no_autorepeat; //鎸夐敭鎸変笅鏃舵槸鍚﹂噸澶嶆彁浜ゆ寜閿�, 璁�1灏辨槸涓嶉噸澶�,璁�0閲嶅��
};

銆�銆�鏍规嵁鎴戜滑鐨勫師鐞嗗浘锛�
銆�銆�琛岀嚎鎺�: KEY_ROW0锛� KEY_ROW1锛� KEY_ROW2锛� KEY_ROW4锛孠EY_ROW5
銆�銆�鍒楃嚎鎺�: KEY_ROW0锛� KEY_ROW1锛� KEY_ROW2锛� KEY_ROW4锛孠EY_ROW5
銆�銆�2銆佹坊鍔犺�惧�囦俊鎭�鐨勫叿浣撴�ラ��
銆�銆�Imx_keypad骞冲彴灞傚嚱鏁扮殑娣诲姞
銆�銆�1.鍦╞oard-mx6q_sabresd.c涓�娣诲姞
銆�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

//娉ㄦ剰閿�鍊硷紝鍙�浠ユ牴鎹�鑷�宸遍」鐩�鐨勯渶姹傝嚜宸辨洿鏀�
static int mx6_sabresd_keymap[] = {
                   KEY(0, 0, KEY_UP),
                   KEY(0, 1, KEY_F9),
                   KEY(0, 2, KEY_F3),
                   KEY(0, 4, KEY_DOWN),
                   KEY(0, 5, KEY_PRINT),
        
        
                   KEY(1, 0, KEY_RIGHT),
                   KEY(1, 1, KEY_F8),
                   KEY(1, 2, KEY_F4),
                   KEY(1, 4, KEY_HOME),
                   KEY(1, 5, KEY_PAGEDOWN),
        
        
                   KEY(2, 0, KEY_F12),
                   KEY(2, 1, KEY_F7),
                   KEY(2, 2, KEY_F5),
                   KEY(2, 4, KEY_END),
                   KEY(2, 5, KEY_PAGEUP),
        
        
                   KEY(4, 0, KEY_F11),
                   KEY(4, 1, KEY_F1),
                   KEY(4, 2, KEY_F6),
                   KEY(4, 4, KEY_NUMLOCK),
                   KEY(4, 5, KEY_ESC),
        
        
                   KEY(5, 0, KEY_F10),
                   KEY(5, 1, KEY_F2),
                   KEY(5, 2, KEY_LEFT),
                   KEY(5, 4, KEY_SCROLLLOCK),
                   KEY(5, 5, KEY_PAUSE),
        
};

static const struct matrix_keymap_data mx6_sabresd_map_data __initconst= {
        .keymap                = mx6_sabresd_keymap,
        .keymap_size        = ARRAY_SIZE(mx6_sabresd_keymap),
};

銆�銆�2.鍦╩x6_sabresd_board_init鍑芥暟涓�娣诲姞锛�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

銆�銆�imx6q_add_imx_keypad(&mx6_sabresd_map_data);   //KEYBOARD 

銆�銆�杩欎釜鍑芥暟鏄�鍦≒latfprm-imx-keypad.c瀹氫箟鐨勶紝闇�瑕佸湪Devices-imx6q.h涓�娣诲姞瀹忓畾涔夛細
銆�銆�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

extern const struct imx_imx_keypad_data imx6q_imx_keypad_data ;  //lyy 
#define imx6q_add_imx_keypad(pdata)   \
        imx_add_imx_keypad(&imx6q_imx_keypad_data,pdata);

銆�銆�3.鍦≒latfprm-imx-keypad.c涓�娣诲姞锛�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

//lyy
#ifdef CONFIG_SOC_IMX6Q
const struct imx_imx_keypad_data imx6q_imx_keypad_data __initconst =
        imx_imx_keypad_data_entry_single(MX6SL, SZ_16);
#endif /* ifdef CONFIG_SOC_IMX6Q */

銆�銆�4.鍦˙oard-mx6_sabresd.h涓�娣诲姞骞跺皢鎵�鏈夊�嶇敤寮曡剼娉ㄩ噴鎺�
銆�銆�鏈夊彲鑳芥湁鍏跺畠璁惧�囧�嶇敤浜嗕笅闈㈣繖浜涘紩鑴氾紝涓�瀹氳�佸厛灏嗕粬浠�娉ㄩ噴鎺�
銆�銆�/* keyboaed lyy */      
           MX6Q_PAD_KEY_COL0__KPP_COL_0,
           MX6Q_PAD_KEY_ROW0__KPP_ROW_0,
           MX6Q_PAD_KEY_COL1__KPP_COL_1,
           MX6Q_PAD_KEY_ROW1__KPP_ROW_1,
           MX6Q_PAD_KEY_COL2__KPP_COL_2,
           MX6Q_PAD_KEY_ROW2__KPP_ROW_2,
    MX6Q_PAD_KEY_COL4__KPP_COL_4,
    MX6Q_PAD_KEY_ROW4__KPP_ROW_4,
    MX6Q_PAD_CSI0_DAT4__KPP_COL_5,
    MX6Q_PAD_CSI0_DAT5__KPP_ROW_5,

銆�銆�5.鍦╝rch\arm\mach-mx6\Clock.c涓�鐨刲ookups[]涓�鍔犲叆锛�

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

static struct clk_lookup lookups[] = {
銆傘�傘�傘�傘�傘�傘��
銆傘�傘�傘�傘�傘�傘��
_REGISTER_CLOCK(NULL, "kpp", dummy_clk),  //杩欐槸鍔犲叆鐨�
}锛�

銆�銆�3銆佹祴璇�
銆�銆�閲嶆柊缂栬瘧鍐呮牳鍚庯紝鐑у啓鍒板紑鍙戞澘锛岀劧鍚庢祴璇曟寜閿�鏄�鍚﹀彲浠ユ�ｅ父浣跨敤锛�
銆�銆�棣栧厛鍦ㄦ澘瀛愬惎鍔ㄥ悗锛屽湪鏉垮瓙鐨勭粓绔�杈撳叆;

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

$ cat /proc/bus/input/devices

銆�銆�鏌ョ湅褰撳墠鐨勮�惧�囷紝鎵惧埌鎴戜滑鐨勬寜閿�璁惧�囷紝鍋囪�句负evet0銆�
銆�銆�鍒欏湪缁堢��涓�杈撳叆

[C++] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

$ hexdump /dev/input/event0

銆�銆�鎵�鏈夋寜閿�閮芥寜涓�閬嶏紝浼氬彂鐜扮粓绔�涓�鎵撳嵃浜嗘寜閿�鐨勫�硷紙鏄剧ず鐨勫唴瀹瑰ソ鍍忔槸鏌愪竴绉嶇紪鐮侊紝涓嶇煡閬撴�庝箞杞�鎹�涓烘寜閿�鐨勫�硷級