高通gpio配置输出

设备树文件

1 icn6211@2c {
2     compatible = "qcom,icn6211_mipi_rgb";
3     reg = <0x2c>;
4     icn6211,switch-gpio = <&msm_gpio 61 0x00>;
5     icn6211,lcdreset-gpio = <&msm_gpio 25 0x00>;
6 };

c文件

 1 #include 
 2 #include 
 3 #include 
 4 
 5 #define GPIO_HIGH 1
 6 #define GPIO_LOW 0
 7 
 8 static int icn6211_probe(struct i2c_client *client, const struct i2c_device_id *id)
 9 {
10     int icn6211_reset_gpio = 0;
11     struct device_node *np = client->dev.of_node;
12     
13     icn6211_reset_gpio = of_get_named_gpio(np, "icn6211,lcdreset-gpio", 0);
14     if (!gpio_is_valid(icn6211_reset_gpio))
15     {
16         pr_err("%s: fail @gpio_is_valid, custom_output1_gpio=%d\n", __func__, icn6211_reset_gpio);
17     }
18     else
19     {
20         if (gpio_request(icn6211_reset_gpio, "icn6211,lcdreset-gpio") != 0)
21         {
22             gpio_free(icn6211_reset_gpio);
23             pr_err("%s: fail @gpio_request, custom_output1_gpio=%d\n", __func__, icn6211_reset_gpio);
24         }
25         else
26         {
27             gpio_direction_output(icn6211_reset_gpio, GPIO_LOW);
28         }
29     }
30 }