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drivers: led: Add public API for LED drivers

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Add support for LED APIs for controlling the LED devices. This
API can be used by the LED devices present on the chip and connected
externally via buses like I2C, SPI etc...

Following APIs are currently supported:

1. led_blink
2. led_set_brightness
3. led_on
4. led_off

Driver support using these APIs will be added in subsequent patches.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
This commit is contained in:
Manivannan Sadhasivam 2017-12-17 16:16:02 +05:30 • committed by Maureen Helm
commit 94bba071d6
6 changed files with 213 additions and 0 deletions
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38
drivers/led/led_context.h Normal file
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/*
* Copyright (c) 2018 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Private LED driver APIs
*/
#ifndef __LED_CONTEXT_H__
#define __LED_CONTEXT_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Internal driver specific representation of an LED device
*/
struct led_data {
/* Minimum acceptable LED blinking time period (in ms) */
u32_t min_period;
/* Maximum acceptable LED blinking time period (in ms) */
u32_t max_period;
/* Minimum acceptable LED brightness value */
u16_t min_brightness;
/* Maximum acceptable LED brightness value */
u16_t max_brightness;
};
#ifdef __cplusplus
}
#endif
#endif /* __LED_CONTEXT_H__ */