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/* This file is part of the coreboot project. */
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This is a driver for the Whirlwind LED ring, which is equipped with two LED
* microcontrollers TI LP55231 (http://www.ti.com/product/lp55231), each of
* them driving three multicolor LEDs.
*
* The only connection between the ring and the main board is an i2c bus.
*
* This driver imitates a depthcharge display device. On initialization the
* driver sets up the controllers to prepare them to accept programs to run.
*
* When a certain vboot state needs to be indicated, the program for that
* state is loaded into the controllers, resulting in the state appropriate
* LED behavior.
*/
#ifndef __THIRD_PARTY_COREBOOT_SRC_DRIVERS_I2C_WW_RING_WW_RING_PROGRAMS_H__
#define __THIRD_PARTY_COREBOOT_SRC_DRIVERS_I2C_WW_RING_WW_RING_PROGRAMS_H__
#include <stdint.h>
#include "drivers/i2c/ww_ring/ww_ring.h"
/* There are threee independent engines/cores in the controller. */
#define LP55231_NUM_OF_ENGINES 3
/* Number of lp55321 controllers on the ring */
#define WW_RING_NUM_LED_CONTROLLERS 1
/*
* Structure to describe an lp55231 program: pointer to the text of the
* program, its size and load address (load addr + size sould not exceed
* LP55231_MAX_PROG_SIZE), and start addresses for all of the three
* engines.
*/
typedef struct {
const uint8_t *program_text;
uint8_t program_size;
uint8_t load_addr;
uint8_t engine_start_addr[LP55231_NUM_OF_ENGINES];
} TiLp55231Program;
/* A structure to bind controller programs to a vboot state. */
typedef struct {
enum display_pattern led_pattern;
const TiLp55231Program *programs[WW_RING_NUM_LED_CONTROLLERS];
} WwRingStateProg;
extern const WwRingStateProg wwr_state_programs[];
#endif
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