Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) =====================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Kernel driver w1-gpio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) =====================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Author: Ville Syrjala <syrjala@sci.fi>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) Description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) GPIO 1-wire bus master driver. The driver uses the GPIO API to control the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) wire and the GPIO pin can be specified using GPIO machine descriptor tables.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) It is also possible to define the master using device tree, see
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Documentation/devicetree/bindings/w1/w1-gpio.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) Example (mach-at91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) -------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) ::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)   #include <linux/gpio/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)   #include <linux/w1-gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)   static struct gpiod_lookup_table foo_w1_gpiod_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	.dev_id = "w1-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	.table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		GPIO_LOOKUP_IDX("at91-gpio", AT91_PIN_PB20, NULL, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 			GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)   };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)   static struct w1_gpio_platform_data foo_w1_gpio_pdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	.ext_pullup_enable_pin	= -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)   };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)   static struct platform_device foo_w1_device = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	.name			= "w1-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	.id			= -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	.dev.platform_data	= &foo_w1_gpio_pdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)   };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)   ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	at91_set_GPIO_periph(foo_w1_gpio_pdata.pin, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	at91_set_multi_drive(foo_w1_gpio_pdata.pin, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	gpiod_add_lookup_table(&foo_w1_gpiod_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	platform_device_register(&foo_w1_device);