diff options
Diffstat (limited to 'drivers/led/issi/is31fl3741-mono.c')
| -rw-r--r-- | drivers/led/issi/is31fl3741-mono.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/drivers/led/issi/is31fl3741-mono.c b/drivers/led/issi/is31fl3741-mono.c new file mode 100644 index 0000000000..dbccba0fc8 --- /dev/null +++ b/drivers/led/issi/is31fl3741-mono.c @@ -0,0 +1,282 @@ +/* Copyright 2017 Jason Williams + * Copyright 2018 Jack Humbert + * Copyright 2018 Yiancar + * Copyright 2020 MelGeek + * + * 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 "is31fl3741-mono.h" +#include "i2c_master.h" +#include "gpio.h" +#include "wait.h" + +#define IS31FL3741_PWM_0_REGISTER_COUNT 180 +#define IS31FL3741_PWM_1_REGISTER_COUNT 171 +#define IS31FL3741_SCALING_0_REGISTER_COUNT 180 +#define IS31FL3741_SCALING_1_REGISTER_COUNT 171 + +#ifndef IS31FL3741_I2C_TIMEOUT +# define IS31FL3741_I2C_TIMEOUT 100 +#endif + +#ifndef IS31FL3741_I2C_PERSISTENCE +# define IS31FL3741_I2C_PERSISTENCE 0 +#endif + +#ifndef IS31FL3741_CONFIGURATION +# define IS31FL3741_CONFIGURATION 0x01 +#endif + +#ifndef IS31FL3741_PWM_FREQUENCY +# define IS31FL3741_PWM_FREQUENCY IS31FL3741_PWM_FREQUENCY_29K_HZ +#endif + +#ifndef IS31FL3741_SW_PULLUP +# define IS31FL3741_SW_PULLUP IS31FL3741_PUR_32K_OHM +#endif + +#ifndef IS31FL3741_CS_PULLDOWN +# define IS31FL3741_CS_PULLDOWN IS31FL3741_PDR_32K_OHM +#endif + +#ifndef IS31FL3741_GLOBAL_CURRENT +# define IS31FL3741_GLOBAL_CURRENT 0xFF +#endif + +const uint8_t i2c_addresses[IS31FL3741_DRIVER_COUNT] = { + IS31FL3741_I2C_ADDRESS_1, +#ifdef IS31FL3741_I2C_ADDRESS_2 + IS31FL3741_I2C_ADDRESS_2, +# ifdef IS31FL3741_I2C_ADDRESS_3 + IS31FL3741_I2C_ADDRESS_3, +# ifdef IS31FL3741_I2C_ADDRESS_4 + IS31FL3741_I2C_ADDRESS_4, +# endif +# endif +#endif +}; + +// These buffers match the IS31FL3741 and IS31FL3741A PWM registers. +// The scaling buffers match the page 2 and 3 LED On/Off registers. +// Storing them like this is optimal for I2C transfers to the registers. +// We could optimize this and take out the unused registers from these +// buffers and the transfers in is31fl3741_write_pwm_buffer() but it's +// probably not worth the extra complexity. +typedef struct is31fl3741_driver_t { + uint8_t pwm_buffer_0[IS31FL3741_PWM_0_REGISTER_COUNT]; + uint8_t pwm_buffer_1[IS31FL3741_PWM_1_REGISTER_COUNT]; + bool pwm_buffer_dirty; + uint8_t scaling_buffer_0[IS31FL3741_SCALING_0_REGISTER_COUNT]; + uint8_t scaling_buffer_1[IS31FL3741_SCALING_1_REGISTER_COUNT]; + bool scaling_buffer_dirty; +} PACKED is31fl3741_driver_t; + +is31fl3741_driver_t driver_buffers[IS31FL3741_DRIVER_COUNT] = {{ + .pwm_buffer_0 = {0}, + .pwm_buffer_1 = {0}, + .pwm_buffer_dirty = false, + .scaling_buffer_0 = {0}, + .scaling_buffer_1 = {0}, + .scaling_buffer_dirty = false, +}}; + +void is31fl3741_write_register(uint8_t index, uint8_t reg, uint8_t data) { +#if IS31FL3741_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) { + if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT); +#endif +} + +void is31fl3741_select_page(uint8_t index, uint8_t page) { + is31fl3741_write_register(index, IS31FL3741_REG_COMMAND_WRITE_LOCK, IS31FL3741_COMMAND_WRITE_LOCK_MAGIC); + is31fl3741_write_register(index, IS31FL3741_REG_COMMAND, page); +} + +void is31fl3741_write_pwm_buffer(uint8_t index) { + is31fl3741_select_page(index, IS31FL3741_COMMAND_PWM_0); + + // Transmit PWM0 registers in 6 transfers of 30 bytes. + + // Iterate over the pwm_buffer_0 contents at 30 byte intervals. + for (uint8_t i = 0; i < IS31FL3741_PWM_0_REGISTER_COUNT; i += 30) { +#if IS31FL3741_I2C_PERSISTENCE > 0 + for (uint8_t j = 0; j < IS31FL3741_I2C_PERSISTENCE; j++) { + if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_0 + i, 30, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_0 + i, 30, IS31FL3741_I2C_TIMEOUT); +#endif + } + + is31fl3741_select_page(index, IS31FL3741_COMMAND_PWM_1); + + // Transmit PWM1 registers in 9 transfers of 19 bytes. + + // Iterate over the pwm_buffer_1 contents at 19 byte intervals. + for (uint8_t i = 0; i < IS31FL3741_PWM_1_REGISTER_COUNT; i += 19) { +#if IS31FL3741_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) { + if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_1 + i, 19, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_1 + i, 19, IS31FL3741_I2C_TIMEOUT); +#endif + } +} + +void is31fl3741_init_drivers(void) { + i2c_init(); + +#if defined(IS31FL3741_SDB_PIN) + gpio_set_pin_output(IS31FL3741_SDB_PIN); + gpio_write_pin_high(IS31FL3741_SDB_PIN); +#endif + + for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) { + is31fl3741_init(i); + } + + for (int i = 0; i < IS31FL3741_LED_COUNT; i++) { + is31fl3741_set_led_control_register(i, true); + } + + for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) { + is31fl3741_update_led_control_registers(i); + } +} + +void is31fl3741_init(uint8_t index) { + // In order to avoid the LEDs being driven with garbage data + // in the LED driver's PWM registers, shutdown is enabled last. + // Set up the mode and other settings, clear the PWM registers, + // then disable software shutdown. + // Unlock the command register. + + is31fl3741_select_page(index, IS31FL3741_COMMAND_FUNCTION); + + // Set to Normal operation + is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_CONFIGURATION, IS31FL3741_CONFIGURATION); + + // Set Golbal Current Control Register + is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3741_GLOBAL_CURRENT); + // Set Pull up & Down for SWx CSy + is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_PULLDOWNUP, ((IS31FL3741_CS_PULLDOWN << 4) | IS31FL3741_SW_PULLUP)); + // Set PWM frequency + is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_PWM_FREQUENCY, (IS31FL3741_PWM_FREQUENCY & 0b1111)); + + // is31fl3741_update_led_scaling_registers(index, 0xFF, 0xFF, 0xFF); + + // Wait 10ms to ensure the device has woken up. + wait_ms(10); +} + +uint8_t get_pwm_value(uint8_t driver, uint16_t reg) { + if (reg & 0x100) { + return driver_buffers[driver].pwm_buffer_1[reg & 0xFF]; + } else { + return driver_buffers[driver].pwm_buffer_0[reg]; + } +} + +void set_pwm_value(uint8_t driver, uint16_t reg, uint8_t value) { + if (reg & 0x100) { + driver_buffers[driver].pwm_buffer_1[reg & 0xFF] = value; + } else { + driver_buffers[driver].pwm_buffer_0[reg] = value; + } +} + +void is31fl3741_set_value(int index, uint8_t value) { + is31fl3741_led_t led; + + if (index >= 0 && index < IS31FL3741_LED_COUNT) { + memcpy_P(&led, (&g_is31fl3741_leds[index]), sizeof(led)); + + if (get_pwm_value(led.driver, led.v) == value) { + return; + } + + set_pwm_value(led.driver, led.v, value); + driver_buffers[led.driver].pwm_buffer_dirty = true; + } +} + +void is31fl3741_set_value_all(uint8_t value) { + for (int i = 0; i < IS31FL3741_LED_COUNT; i++) { + is31fl3741_set_value(i, value); + } +} + +void set_scaling_value(uint8_t driver, uint16_t reg, uint8_t value) { + if (reg & 0x100) { + driver_buffers[driver].scaling_buffer_1[reg & 0xFF] = value; + } else { + driver_buffers[driver].scaling_buffer_0[reg] = value; + } +} + +void is31fl3741_set_led_control_register(uint8_t index, bool value) { + is31fl3741_led_t led; + memcpy_P(&led, (&g_is31fl3741_leds[index]), sizeof(led)); + + set_scaling_value(led.driver, led.v, value ? 0xFF : 0x00); + + driver_buffers[led.driver].scaling_buffer_dirty = true; +} + +void is31fl3741_update_pwm_buffers(uint8_t index) { + if (driver_buffers[index].pwm_buffer_dirty) { + is31fl3741_write_pwm_buffer(index); + + driver_buffers[index].pwm_buffer_dirty = false; + } +} + +void is31fl3741_set_pwm_buffer(const is31fl3741_led_t *pled, uint8_t value) { + set_pwm_value(pled->driver, pled->v, value); + driver_buffers[pled->driver].pwm_buffer_dirty = true; +} + +void is31fl3741_update_led_control_registers(uint8_t index) { + if (driver_buffers[index].scaling_buffer_dirty) { + is31fl3741_select_page(index, IS31FL3741_COMMAND_SCALING_0); + + for (uint8_t i = 0; i < IS31FL3741_SCALING_0_REGISTER_COUNT; i++) { + is31fl3741_write_register(index, i, driver_buffers[index].scaling_buffer_0[i]); + } + + is31fl3741_select_page(index, IS31FL3741_COMMAND_SCALING_1); + + for (uint8_t i = 0; i < IS31FL3741_SCALING_1_REGISTER_COUNT; i++) { + is31fl3741_write_register(index, i, driver_buffers[index].scaling_buffer_1[i]); + } + + driver_buffers[index].scaling_buffer_dirty = false; + } +} + +void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t value) { + set_scaling_value(pled->driver, pled->v, value); + driver_buffers[pled->driver].scaling_buffer_dirty = true; +} + +void is31fl3741_flush(void) { + for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) { + is31fl3741_update_pwm_buffers(i); + } +} |