高通 8x12 添加 TP和按键

1 .在tp的驱动文件中添加以下代码实现按键功能

static ssize_t
ft5x06_virtual_keys_register(struct kobject *kobj,
                 struct kobj_attribute *attr,
                 char *buf)
{
    return snprintf(buf, 200,
    __stringify(EV_KEY) ":" __stringify(KEY_HOME)  ":120:840:80:60"
    ":" __stringify(EV_KEY) ":" __stringify(KEY_BACK)   ":360:840:80:60"
    "
");
}

static struct kobj_attribute ft5x06_virtual_keys_attr = {
    .attr = {
        .name = "virtualkeys.ft5x06_ts",
        .mode = S_IRUGO,
    },
    .show = &ft5x06_virtual_keys_register,
};

static struct attribute *ft5x06_virtual_key_properties_attrs[] = {
    &ft5x06_virtual_keys_attr.attr,
    NULL,
};

static struct attribute_group ft5x06_virtual_key_properties_attr_group = {
    .attrs = ft5x06_virtual_key_properties_attrs,
};

struct kobject *ft5x06_virtual_key_properties_kobj;


static void __init ft5x06_touchpad_setup(void)
{
    int rc;
    ft5x06_virtual_key_properties_kobj =
            kobject_create_and_add("board_properties", NULL);


    if (ft5x06_virtual_key_properties_kobj)
        rc = sysfs_create_group(ft5x06_virtual_key_properties_kobj,
                &ft5x06_virtual_key_properties_attr_group);

    if (!ft5x06_virtual_key_properties_kobj || rc)
        pr_err("%s: failed to create board_properties
", __func__);


}

另外需要在-mtp.dtsi文件中配置TP的参数和gen_vkeys

i2c@f9923000{
    focaltech@38{
        compatible = "focaltech,5x06";
        reg = <0x38>;
        interrupt-parent = <&msmgpio>;
        interrupts = <1 0x2>;
        vdd-supply = <&pm8110_l19>;
        vcc_i2c-supply = <&pm8110_l14>;
        focaltech,family-id = <0x06>;
        focaltech,reset-gpio = <&msmgpio 0 0x00>;
        focaltech,irq-gpio = <&msmgpio 1 0x00>;
        focaltech,display-coords = <0 0 480 854>;
        focaltech,panel-coords = <0 0 480 946>;
        focaltech,button-map= <139 102 158>;
        focaltech,no-force-update;
        focaltech,i2c-pull-up;

这里主要配置touch panel的按键：

gen-vkeys {
        compatible = "qcom,gen-vkeys";
        label = "ft5x06_ts";
        qcom,disp-maxx = <480>;
        qcom,disp-maxy = <800>;
        qcom,panel-maxx = <481>;
        qcom,panel-maxy = <940>;
        qcom,key-codes = <102 158 >;  //按键码，TP需要几个就写几个
        qcom,y-offset = <0>;
    };

key_codes究竟是多少，在头文件kernel/include/linux/input.h 中定义，解析这些参数的函数是在driver/input/touchscreen/gen_vkeys.c,其中用的的函数还是这个

vkey_obj = kobject_create_and_add("board_properties", NULL);
if (!vkey_obj) {
dev_err(&pdev->dev, "unable to create kobject ");
return -ENOMEM;
}


ret = sysfs_create_group(vkey_obj, &vkey_grp);
if (ret) {
dev_err(&pdev->dev, "failed to create attributes ");
goto destroy_kobj;
}

这个实现的方法跟8x25的基本一样，只不过这里注册成了驱动。记住如果使能这个功能的话，在配置文件中CONFIG_TOUCHSCREEN_GEN_VKEYS=y

下面是成功添加后的截图

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