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GPIO driver: register all pintypes as generic /dev/gpioN

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This commit is contained in:
Jari van Ewijk
2021-12-09 20:05:20 +01:00
committed by Xiang Xiao
parent efc949bceb
commit 2e47ef32cf
9 changed files with 142 additions and 96 deletions
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include/nuttx/ioexpander/gpio.h
+10 -22
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@@ -107,12 +107,12 @@ typedef CODE int (*pin_interrupt_t)(FAR struct gpio_dev_s *dev, uint8_t pin);
/* Pin interface vtable definition. Instances of this vtable are read-only
* and may reside in FLASH.
*
* - go_read. Required for all all pin types.
* - go_read. Required for all pin types.
* - go_write. Required only for the GPIO_OUTPUT_PIN pin type. Unused
* for other pin types may be NULL.
* - go_attach and gp_eanble. Required only the GPIO_INTERRUPT_PIN pin
* type. Unused for other pin types may be NULL.
* - go_setpinytype. Required for all all pin types.
* for other pin types, may be NULL.
* - go_attach and gp_enable. Required only for the GPIO_INTERRUPT_PIN pin
* type. Unused for other pin types, may be NULL.
* - go_setpinytype. Required for all pin types.
*/
struct gpio_dev_s;
@@ -177,14 +177,8 @@ extern "C"
* Name: gpio_pin_register
*
* Description:
* Register GPIO pin device driver.
*
* - Input pin types will be registered at /dev/gpinN
* - Output pin types will be registered at /dev/gpoutN
* - Interrupt pin types will be registered at /dev/gpintN
*
* Where N is the provided minor number in the range of 0-99.
*
* Register GPIO pin device driver at /dev/gpioN, where N is the provided
* minor number.
*
****************************************************************************/
@@ -194,18 +188,12 @@ int gpio_pin_register(FAR struct gpio_dev_s *dev, int minor);
* Name: gpio_pin_unregister
*
* Description:
* Unregister GPIO pin device driver.
*
* - Input pin types will be registered at /dev/gpinN
* - Output pin types will be registered at /dev/gpoutN
* - Interrupt pin types will be registered at /dev/gpintN
*
* Where N is the provided minor number in the range of 0-99.
*
* Unregister GPIO pin device driver at /dev/gpioN, where N is the provided
* minor number.
*
****************************************************************************/
void gpio_pin_unregister(FAR struct gpio_dev_s *dev, int minor);
int gpio_pin_unregister(FAR struct gpio_dev_s *dev, int minor);
/****************************************************************************
* Name: gpio_lower_half