Vadim Bendebury | 5fa5f99 | 2015-03-17 15:15:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 Google, Inc. |
| 3 | * |
| 4 | * This software is licensed under the terms of the GNU General Public |
| 5 | * License version 2, as published by the Free Software Foundation, and |
| 6 | * may be copied, distributed, and modified under those terms. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * This is a driver for the Whirlwind LED ring, which is equipped with two LED |
| 16 | * microcontrollers TI LP55231 (http://www.ti.com/product/lp55231), each of |
| 17 | * them driving three multicolor LEDs. |
| 18 | * |
| 19 | * The only connection between the ring and the main board is an i2c bus. |
| 20 | * |
| 21 | * This driver imitates a depthcharge display device. On initialization the |
| 22 | * driver sets up the controllers to prepare them to accept programs to run. |
| 23 | * |
| 24 | * When a certain vboot state needs to be indicated, the program for that |
| 25 | * state is loaded into the controllers, resulting in the state appropriate |
| 26 | * LED behavior. |
| 27 | */ |
| 28 | |
| 29 | #ifndef __THIRD_PARTY_COREBOOT_SRC_DRIVERS_I2C_WW_RING_WW_RING_PROGRAMS_H__ |
| 30 | #define __THIRD_PARTY_COREBOOT_SRC_DRIVERS_I2C_WW_RING_WW_RING_PROGRAMS_H__ |
| 31 | |
| 32 | #include <stdint.h> |
| 33 | #include "drivers/i2c/ww_ring/ww_ring.h" |
| 34 | |
| 35 | /* There are threee independent engines/cores in the controller. */ |
| 36 | #define LP55231_NUM_OF_ENGINES 3 |
| 37 | |
| 38 | /* Number of lp55321 controllers on the ring */ |
Suresh Rajashekara | a39a5b6 | 2016-08-15 16:18:11 -0700 | [diff] [blame] | 39 | #define WW_RING_NUM_LED_CONTROLLERS 1 |
Vadim Bendebury | 5fa5f99 | 2015-03-17 15:15:42 -0700 | [diff] [blame] | 40 | |
| 41 | /* |
| 42 | * Structure to describe an lp55231 program: pointer to the text of the |
| 43 | * program, its size and load address (load addr + size sould not exceed |
| 44 | * LP55231_MAX_PROG_SIZE), and start addresses for all of the three |
| 45 | * engines. |
| 46 | */ |
| 47 | typedef struct { |
| 48 | const uint8_t *program_text; |
| 49 | uint8_t program_size; |
| 50 | uint8_t load_addr; |
| 51 | uint8_t engine_start_addr[LP55231_NUM_OF_ENGINES]; |
| 52 | } TiLp55231Program; |
| 53 | |
| 54 | /* A structure to bind controller programs to a vboot state. */ |
| 55 | typedef struct { |
| 56 | enum display_pattern led_pattern; |
| 57 | const TiLp55231Program *programs[WW_RING_NUM_LED_CONTROLLERS]; |
| 58 | } WwRingStateProg; |
| 59 | |
| 60 | extern const WwRingStateProg wwr_state_programs[]; |
| 61 | |
| 62 | #endif |