| /* |
| * Copyright (C) 2015 Google, Inc. |
| * |
| * This software is licensed under the terms of the GNU General Public |
| * License version 2, as published by the Free Software Foundation, and |
| * may be copied, distributed, and modified under those terms. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| /* |
| * 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 2 |
| |
| /* |
| * 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 |