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Diffstat (limited to 'Documentation/w1/masters/w1-gpio')
| -rw-r--r-- | Documentation/w1/masters/w1-gpio | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/Documentation/w1/masters/w1-gpio b/Documentation/w1/masters/w1-gpio deleted file mode 100644 index 623961d9e83f..000000000000 --- a/Documentation/w1/masters/w1-gpio +++ /dev/null @@ -1,44 +0,0 @@ -Kernel driver w1-gpio -===================== - -Author: Ville Syrjala <syrjala@sci.fi> - - -Description ------------ - -GPIO 1-wire bus master driver. The driver uses the GPIO API to control the -wire and the GPIO pin can be specified using GPIO machine descriptor tables. -It is also possible to define the master using device tree, see -Documentation/devicetree/bindings/w1/w1-gpio.txt - - -Example (mach-at91) -------------------- - -#include <linux/gpio/machine.h> -#include <linux/w1-gpio.h> - -static struct gpiod_lookup_table foo_w1_gpiod_table = { - .dev_id = "w1-gpio", - .table = { - GPIO_LOOKUP_IDX("at91-gpio", AT91_PIN_PB20, NULL, 0, - GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN), - }, -}; - -static struct w1_gpio_platform_data foo_w1_gpio_pdata = { - .ext_pullup_enable_pin = -EINVAL, -}; - -static struct platform_device foo_w1_device = { - .name = "w1-gpio", - .id = -1, - .dev.platform_data = &foo_w1_gpio_pdata, -}; - -... - at91_set_GPIO_periph(foo_w1_gpio_pdata.pin, 1); - at91_set_multi_drive(foo_w1_gpio_pdata.pin, 1); - gpiod_add_lookup_table(&foo_w1_gpiod_table); - platform_device_register(&foo_w1_device); |