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�

 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);

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;
}

#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��
};

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

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);

//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 */

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�

$ cat /proc/bus/input/devices

$ hexdump /dev/input/event0