projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ad8dc96e VS |
1 | Kernel driver w1-gpio |
| 2 | ===================== | |
| 3 | ||
| 4 | Author: Ville Syrjala <syrjala@sci.fi> | |
| 5 | ||
| 6 | ||
| 7 | Description | |
| 8 | ----------- | |
| 9 | ||
| 10 | GPIO 1-wire bus master driver. The driver uses the GPIO API to control the | |
| 11 | wire and the GPIO pin can be specified using platform data. | |
| 12 | ||
| 13 | ||
| 14 | Example (mach-at91) | |
| 15 | ------------------- | |
| 16 | ||
| 17 | #include <linux/w1-gpio.h> | |
| 18 | ||
| 19 | static struct w1_gpio_platform_data foo_w1_gpio_pdata = { | |
| 20 | .pin = AT91_PIN_PB20, | |
| 21 | .is_open_drain = 1, | |
| 22 | }; | |
| 23 | ||
| 24 | static struct platform_device foo_w1_device = { | |
| 25 | .name = "w1-gpio", | |
| 26 | .id = -1, | |
| 27 | .dev.platform_data = &foo_w1_gpio_pdata, | |
| 28 | }; | |
| 29 | ||
| 30 | ... | |
| 31 | at91_set_GPIO_periph(foo_w1_gpio_pdata.pin, 1); | |
| 32 | at91_set_multi_drive(foo_w1_gpio_pdata.pin, 1); | |
| 33 | platform_device_register(&foo_w1_device); |