diff options
Diffstat (limited to 'drivers/awinic')
| -rw-r--r-- | drivers/awinic/aw20216.c | 141 | ||||
| -rw-r--r-- | drivers/awinic/aw20216.h | 252 |
2 files changed, 393 insertions, 0 deletions
diff --git a/drivers/awinic/aw20216.c b/drivers/awinic/aw20216.c new file mode 100644 index 0000000000..c608c0ab44 --- /dev/null +++ b/drivers/awinic/aw20216.c @@ -0,0 +1,141 @@ +/* Copyright 2021 Jasper Chan + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "aw20216.h" +#include "spi_master.h" + +/* The AW20216 appears to be somewhat similar to the IS31FL743, although quite + * a few things are different, such as the command byte format and page ordering. + * The LED addresses start from 0x00 instead of 0x01. + */ +#define AWINIC_ID 0b1010 << 4 + +#define AW_PAGE_FUNCTION 0x00 << 1 // PG0, Function registers +#define AW_PAGE_PWM 0x01 << 1 // PG1, LED PWM control +#define AW_PAGE_SCALING 0x02 << 1 // PG2, LED current scaling control +#define AW_PAGE_PATCHOICE 0x03 << 1 // PG3, Pattern choice? +#define AW_PAGE_PWMSCALING 0x04 << 1 // PG4, LED PWM + Scaling control? + +#define AW_WRITE 0 +#define AW_READ 1 + +#define AW_REG_CONFIGURATION 0x00 // PG0 +#define AW_REG_GLOBALCURRENT 0x01 // PG0 + +// Default value of AW_REG_CONFIGURATION +// D7:D4 = 1011, SWSEL (SW1~SW12 active) +// D3 = 0?, reserved (apparently this should be 1 but it doesn't seem to matter) +// D2:D1 = 00, OSDE (open/short detection enable) +// D0 = 0, CHIPEN (write 1 to enable LEDs when hardware enable pulled high) +#define AW_CONFIG_DEFAULT 0b10110000 +#define AW_CHIPEN 1 + +#define AW_PWM_REGISTER_COUNT 216 + +#ifndef AW_SCALING_MAX +# define AW_SCALING_MAX 150 +#endif + +#ifndef AW_GLOBAL_CURRENT_MAX +# define AW_GLOBAL_CURRENT_MAX 150 +#endif + +#ifndef AW_SPI_DIVISOR +# define AW_SPI_DIVISOR 4 +#endif + +uint8_t g_pwm_buffer[DRIVER_COUNT][AW_PWM_REGISTER_COUNT]; +bool g_pwm_buffer_update_required[DRIVER_COUNT] = {false}; + +bool AW20216_write(pin_t cs_pin, uint8_t page, uint8_t reg, uint8_t* data, uint8_t len) { + static uint8_t s_spi_transfer_buffer[2] = {0}; + + if (!spi_start(cs_pin, false, 0, AW_SPI_DIVISOR)) { + spi_stop(); + return false; + } + + s_spi_transfer_buffer[0] = (AWINIC_ID | page | AW_WRITE); + s_spi_transfer_buffer[1] = reg; + + if (spi_transmit(s_spi_transfer_buffer, 2) != SPI_STATUS_SUCCESS) { + spi_stop(); + return false; + } + + if (spi_transmit(data, len) != SPI_STATUS_SUCCESS) { + spi_stop(); + return false; + } + + spi_stop(); + return true; +} + +static inline bool AW20216_write_register(pin_t cs_pin, uint8_t page, uint8_t reg, uint8_t value) { + // Little wrapper so callers need not care about sending a buffer + return AW20216_write(cs_pin, page, reg, &value, 1); +} + +static void AW20216_init_scaling(pin_t cs_pin) { + // Set constant current to the max, control brightness with PWM + for (uint8_t i = 0; i < AW_PWM_REGISTER_COUNT; i++) { + AW20216_write_register(cs_pin, AW_PAGE_SCALING, i, AW_SCALING_MAX); + } +} + +static inline void AW20216_init_current_limit(pin_t cs_pin) { + // Push config + AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_GLOBALCURRENT, AW_GLOBAL_CURRENT_MAX); +} + +static inline void AW20216_soft_enable(pin_t cs_pin) { + // Push config + AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_CONFIGURATION, AW_CONFIG_DEFAULT | AW_CHIPEN); +} + +void AW20216_init(pin_t cs_pin, pin_t en_pin) { + setPinOutput(en_pin); + writePinHigh(en_pin); + + // Drivers should start with all scaling and PWM registers as off + AW20216_init_current_limit(cs_pin); + AW20216_init_scaling(cs_pin); + + AW20216_soft_enable(cs_pin); +} + +void AW20216_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { + aw_led led = g_aw_leds[index]; + + g_pwm_buffer[led.driver][led.r] = red; + g_pwm_buffer[led.driver][led.g] = green; + g_pwm_buffer[led.driver][led.b] = blue; + g_pwm_buffer_update_required[led.driver] = true; +} + +void AW20216_set_color_all(uint8_t red, uint8_t green, uint8_t blue) { + for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) { + AW20216_set_color(i, red, green, blue); + } +} + +void AW20216_update_pwm_buffers(pin_t cs_pin, uint8_t index) { + if (g_pwm_buffer_update_required[index]) { + AW20216_write(cs_pin, AW_PAGE_PWM, 0, g_pwm_buffer[index], AW_PWM_REGISTER_COUNT); + } + g_pwm_buffer_update_required[index] = false; +} diff --git a/drivers/awinic/aw20216.h b/drivers/awinic/aw20216.h new file mode 100644 index 0000000000..c55d9605fc --- /dev/null +++ b/drivers/awinic/aw20216.h @@ -0,0 +1,252 @@ +/* Copyright 2021 Jasper Chan (Gigahawk) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#pragma once + +#include <stdint.h> +#include <stdbool.h> +#include "gpio.h" + +typedef struct aw_led { + uint8_t driver : 2; + uint8_t r; + uint8_t g; + uint8_t b; +} aw_led; + +extern const aw_led g_aw_leds[DRIVER_LED_TOTAL]; + +void AW20216_init(pin_t cs_pin, pin_t en_pin); +void AW20216_set_color(int index, uint8_t red, uint8_t green, uint8_t blue); +void AW20216_set_color_all(uint8_t red, uint8_t green, uint8_t blue); +void AW20216_update_pwm_buffers(pin_t cs_pin, uint8_t index); + +#define CS1_SW1 0x00 +#define CS2_SW1 0x01 +#define CS3_SW1 0x02 +#define CS4_SW1 0x03 +#define CS5_SW1 0x04 +#define CS6_SW1 0x05 +#define CS7_SW1 0x06 +#define CS8_SW1 0x07 +#define CS9_SW1 0x08 +#define CS10_SW1 0x09 +#define CS11_SW1 0x0A +#define CS12_SW1 0x0B +#define CS13_SW1 0x0C +#define CS14_SW1 0x0D +#define CS15_SW1 0x0E +#define CS16_SW1 0x0F +#define CS17_SW1 0x10 +#define CS18_SW1 0x11 +#define CS1_SW2 0x12 +#define CS2_SW2 0x13 +#define CS3_SW2 0x14 +#define CS4_SW2 0x15 +#define CS5_SW2 0x16 +#define CS6_SW2 0x17 +#define CS7_SW2 0x18 +#define CS8_SW2 0x19 +#define CS9_SW2 0x1A +#define CS10_SW2 0x1B +#define CS11_SW2 0x1C +#define CS12_SW2 0x1D +#define CS13_SW2 0x1E +#define CS14_SW2 0x1F +#define CS15_SW2 0x20 +#define CS16_SW2 0x21 +#define CS17_SW2 0x22 +#define CS18_SW2 0x23 +#define CS1_SW3 0x24 +#define CS2_SW3 0x25 +#define CS3_SW3 0x26 +#define CS4_SW3 0x27 +#define CS5_SW3 0x28 +#define CS6_SW3 0x29 +#define CS7_SW3 0x2A +#define CS8_SW3 0x2B +#define CS9_SW3 0x2C +#define CS10_SW3 0x2D +#define CS11_SW3 0x2E +#define CS12_SW3 0x2F +#define CS13_SW3 0x30 +#define CS14_SW3 0x31 +#define CS15_SW3 0x32 +#define CS16_SW3 0x33 +#define CS17_SW3 0x34 +#define CS18_SW3 0x35 +#define CS1_SW4 0x36 +#define CS2_SW4 0x37 +#define CS3_SW4 0x38 +#define CS4_SW4 0x39 +#define CS5_SW4 0x3A +#define CS6_SW4 0x3B +#define CS7_SW4 0x3C +#define CS8_SW4 0x3D +#define CS9_SW4 0x3E +#define CS10_SW4 0x3F +#define CS11_SW4 0x40 +#define CS12_SW4 0x41 +#define CS13_SW4 0x42 +#define CS14_SW4 0x43 +#define CS15_SW4 0x44 +#define CS16_SW4 0x45 +#define CS17_SW4 0x46 +#define CS18_SW4 0x47 +#define CS1_SW5 0x48 +#define CS2_SW5 0x49 +#define CS3_SW5 0x4A +#define CS4_SW5 0x4B +#define CS5_SW5 0x4C +#define CS6_SW5 0x4D +#define CS7_SW5 0x4E +#define CS8_SW5 0x4F +#define CS9_SW5 0x50 +#define CS10_SW5 0x51 +#define CS11_SW5 0x52 +#define CS12_SW5 0x53 +#define CS13_SW5 0x54 +#define CS14_SW5 0x55 +#define CS15_SW5 0x56 +#define CS16_SW5 0x57 +#define CS17_SW5 0x58 +#define CS18_SW5 0x59 +#define CS1_SW6 0x5A +#define CS2_SW6 0x5B +#define CS3_SW6 0x5C +#define CS4_SW6 0x5D +#define CS5_SW6 0x5E +#define CS6_SW6 0x5F +#define CS7_SW6 0x60 +#define CS8_SW6 0x61 +#define CS9_SW6 0x62 +#define CS10_SW6 0x63 +#define CS11_SW6 0x64 +#define CS12_SW6 0x65 +#define CS13_SW6 0x66 +#define CS14_SW6 0x67 +#define CS15_SW6 0x68 +#define CS16_SW6 0x69 +#define CS17_SW6 0x6A +#define CS18_SW6 0x6B +#define CS1_SW7 0x6C +#define CS2_SW7 0x6D +#define CS3_SW7 0x6E +#define CS4_SW7 0x6F +#define CS5_SW7 0x70 +#define CS6_SW7 0x71 +#define CS7_SW7 0x72 +#define CS8_SW7 0x73 +#define CS9_SW7 0x74 +#define CS10_SW7 0x75 +#define CS11_SW7 0x76 +#define CS12_SW7 0x77 +#define CS13_SW7 0x78 +#define CS14_SW7 0x79 +#define CS15_SW7 0x7A +#define CS16_SW7 0x7B +#define CS17_SW7 0x7C +#define CS18_SW7 0x7D +#define CS1_SW8 0x7E +#define CS2_SW8 0x7F +#define CS3_SW8 0x80 +#define CS4_SW8 0x81 +#define CS5_SW8 0x82 +#define CS6_SW8 0x83 +#define CS7_SW8 0x84 +#define CS8_SW8 0x85 +#define CS9_SW8 0x86 +#define CS10_SW8 0x87 +#define CS11_SW8 0x88 +#define CS12_SW8 0x89 +#define CS13_SW8 0x8A +#define CS14_SW8 0x8B +#define CS15_SW8 0x8C +#define CS16_SW8 0x8D +#define CS17_SW8 0x8E +#define CS18_SW8 0x8F +#define CS1_SW9 0x90 +#define CS2_SW9 0x91 +#define CS3_SW9 0x92 +#define CS4_SW9 0x93 +#define CS5_SW9 0x94 +#define CS6_SW9 0x95 +#define CS7_SW9 0x96 +#define CS8_SW9 0x97 +#define CS9_SW9 0x98 +#define CS10_SW9 0x99 +#define CS11_SW9 0x9A +#define CS12_SW9 0x9B +#define CS13_SW9 0x9C +#define CS14_SW9 0x9D +#define CS15_SW9 0x9E +#define CS16_SW9 0x9F +#define CS17_SW9 0xA0 +#define CS18_SW9 0xA1 +#define CS1_SW10 0xA2 +#define CS2_SW10 0xA3 +#define CS3_SW10 0xA4 +#define CS4_SW10 0xA5 +#define CS5_SW10 0xA6 +#define CS6_SW10 0xA7 +#define CS7_SW10 0xA8 +#define CS8_SW10 0xA9 +#define CS9_SW10 0xAA +#define CS10_SW10 0xAB +#define CS11_SW10 0xAC +#define CS12_SW10 0xAD +#define CS13_SW10 0xAE +#define CS14_SW10 0xAF +#define CS15_SW10 0xB0 +#define CS16_SW10 0xB1 +#define CS17_SW10 0xB2 +#define CS18_SW10 0xB3 +#define CS1_SW11 0xB4 +#define CS2_SW11 0xB5 +#define CS3_SW11 0xB6 +#define CS4_SW11 0xB7 +#define CS5_SW11 0xB8 +#define CS6_SW11 0xB9 +#define CS7_SW11 0xBA +#define CS8_SW11 0xBB +#define CS9_SW11 0xBC +#define CS10_SW11 0xBD +#define CS11_SW11 0xBE +#define CS12_SW11 0xBF +#define CS13_SW11 0xC0 +#define CS14_SW11 0xC1 +#define CS15_SW11 0xC2 +#define CS16_SW11 0xC3 +#define CS17_SW11 0xC4 +#define CS18_SW11 0xC5 +#define CS1_SW12 0xC6 +#define CS2_SW12 0xC7 +#define CS3_SW12 0xC8 +#define CS4_SW12 0xC9 +#define CS5_SW12 0xCA +#define CS6_SW12 0xCB +#define CS7_SW12 0xCC +#define CS8_SW12 0xCD +#define CS9_SW12 0xCE +#define CS10_SW12 0xCF +#define CS11_SW12 0xD0 +#define CS12_SW12 0xD1 +#define CS13_SW12 0xD2 +#define CS14_SW12 0xD3 +#define CS15_SW12 0xD4 +#define CS16_SW12 0xD5 +#define CS17_SW12 0xD6 +#define CS18_SW12 0xD7 |