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

[plain] view plain copystatic 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"
"\n");
}

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\n", __func__);

}
另外需要在-mtp.dtsi文件中配置TP的参数和gen_vkeys

[plain] view plain copyi2c@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：

[plain] view plain copygen-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\n");
return -ENOMEM;
}

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