diff options
Diffstat (limited to 'drivers/led/issi/is31fl3741-mono.c')
-rw-r--r-- | drivers/led/issi/is31fl3741-mono.c | 249 |
1 files changed, 249 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..093a7d1133 --- /dev/null +++ b/drivers/led/issi/is31fl3741-mono.c @@ -0,0 +1,249 @@ +/* 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 "wait.h" + +#define IS31FL3741_PWM_REGISTER_COUNT 351 +#define IS31FL3741_SCALING_REGISTER_COUNT 351 + +#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 + +// 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. +uint8_t g_pwm_buffer[IS31FL3741_DRIVER_COUNT][IS31FL3741_PWM_REGISTER_COUNT]; +bool g_pwm_buffer_update_required[IS31FL3741_DRIVER_COUNT] = {false}; +bool g_scaling_registers_update_required[IS31FL3741_DRIVER_COUNT] = {false}; + +uint8_t g_scaling_registers[IS31FL3741_DRIVER_COUNT][IS31FL3741_SCALING_REGISTER_COUNT]; + +void is31fl3741_write_register(uint8_t addr, uint8_t reg, uint8_t data) { +#if IS31FL3741_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) { + if (i2c_writeReg(addr << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_writeReg(addr << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT); +#endif +} + +void is31fl3741_select_page(uint8_t addr, uint8_t page) { + is31fl3741_write_register(addr, IS31FL3741_REG_COMMAND_WRITE_LOCK, IS31FL3741_COMMAND_WRITE_LOCK_MAGIC); + is31fl3741_write_register(addr, IS31FL3741_REG_COMMAND, page); +} + +void is31fl3741_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) { + // Assume page 0 is already selected + + for (uint16_t i = 0; i < 342; i += 18) { + if (i == 180) { + is31fl3741_select_page(addr, IS31FL3741_COMMAND_PWM_1); + } + +#if IS31FL3741_I2C_PERSISTENCE > 0 + for (uint8_t j = 0; j < IS31FL3741_I2C_PERSISTENCE; j++) { + if (i2c_writeReg(addr << 1, i % 180, pwm_buffer + i, 18, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_writeReg(addr << 1, i % 180, pwm_buffer + i, 18, IS31FL3741_I2C_TIMEOUT); +#endif + } + + // transfer the left cause the total number is 351 +#if IS31FL3741_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) { + if (i2c_writeReg(addr << 1, 162, pwm_buffer + 342, 9, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_writeReg(addr << 1, 162, pwm_buffer + 342, 9, IS31FL3741_I2C_TIMEOUT); +#endif +} + +void is31fl3741_init_drivers(void) { + i2c_init(); + + is31fl3741_init(IS31FL3741_I2C_ADDRESS_1); +#if defined(IS31FL3741_I2C_ADDRESS_2) + is31fl3741_init(IS31FL3741_I2C_ADDRESS_2); +# if defined(IS31FL3741_I2C_ADDRESS_3) + is31fl3741_init(IS31FL3741_I2C_ADDRESS_3); +# if defined(IS31FL3741_I2C_ADDRESS_4) + is31fl3741_init(IS31FL3741_I2C_ADDRESS_4); +# endif +# endif +#endif + + for (int i = 0; i < IS31FL3741_LED_COUNT; i++) { + is31fl3741_set_led_control_register(i, true); + } + + is31fl3741_update_led_control_registers(IS31FL3741_I2C_ADDRESS_1, 0); +#if defined(IS31FL3741_I2C_ADDRESS_2) + is31fl3741_update_led_control_registers(IS31FL3741_I2C_ADDRESS_2, 1); +# if defined(IS31FL3741_I2C_ADDRESS_3) + is31fl3741_update_led_control_registers(IS31FL3741_I2C_ADDRESS_3, 2); +# if defined(IS31FL3741_I2C_ADDRESS_4) + is31fl3741_update_led_control_registers(IS31FL3741_I2C_ADDRESS_4, 3); +# endif +# endif +#endif +} + +void is31fl3741_init(uint8_t addr) { + // 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(addr, IS31FL3741_COMMAND_FUNCTION); + + // Set to Normal operation + is31fl3741_write_register(addr, IS31FL3741_FUNCTION_REG_CONFIGURATION, IS31FL3741_CONFIGURATION); + + // Set Golbal Current Control Register + is31fl3741_write_register(addr, IS31FL3741_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3741_GLOBAL_CURRENT); + // Set Pull up & Down for SWx CSy + is31fl3741_write_register(addr, IS31FL3741_FUNCTION_REG_PULLDOWNUP, ((IS31FL3741_CS_PULLDOWN << 4) | IS31FL3741_SW_PULLUP)); + // Set PWM frequency + is31fl3741_write_register(addr, IS31FL3741_FUNCTION_REG_PWM_FREQUENCY, (IS31FL3741_PWM_FREQUENCY & 0b1111)); + + // is31fl3741_update_led_scaling_registers(addr, 0xFF, 0xFF, 0xFF); + + // Wait 10ms to ensure the device has woken up. + wait_ms(10); +} + +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 (g_pwm_buffer[led.driver][led.v] == value) { + return; + } + + g_pwm_buffer_update_required[led.driver] = true; + g_pwm_buffer[led.driver][led.v] = value; + } +} + +void is31fl3741_set_value_all(uint8_t value) { + for (int i = 0; i < IS31FL3741_LED_COUNT; i++) { + is31fl3741_set_value(i, 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)); + + if (value) { + g_scaling_registers[led.driver][led.v] = 0xFF; + } else { + g_scaling_registers[led.driver][led.v] = 0x00; + } + + g_scaling_registers_update_required[led.driver] = true; +} + +void is31fl3741_update_pwm_buffers(uint8_t addr, uint8_t index) { + if (g_pwm_buffer_update_required[index]) { + is31fl3741_select_page(addr, IS31FL3741_COMMAND_PWM_0); + + is31fl3741_write_pwm_buffer(addr, g_pwm_buffer[index]); + + g_pwm_buffer_update_required[index] = false; + } +} + +void is31fl3741_set_pwm_buffer(const is31fl3741_led_t *pled, uint8_t value) { + g_pwm_buffer[pled->driver][pled->v] = value; + g_pwm_buffer_update_required[pled->driver] = true; +} + +void is31fl3741_update_led_control_registers(uint8_t addr, uint8_t index) { + if (g_scaling_registers_update_required[index]) { + is31fl3741_select_page(addr, IS31FL3741_COMMAND_SCALING_0); + + // CS1_SW1 to CS30_SW6 are on page 2 + for (int i = CS1_SW1; i <= CS30_SW6; ++i) { + is31fl3741_write_register(addr, i, g_scaling_registers[index][i]); + } + + is31fl3741_select_page(addr, IS31FL3741_COMMAND_SCALING_1); + + // CS1_SW7 to CS39_SW9 are on page 3 + for (int i = CS1_SW7; i <= CS39_SW9; ++i) { + is31fl3741_write_register(addr, i - CS1_SW7, g_scaling_registers[index][i]); + } + + g_scaling_registers_update_required[index] = false; + } +} + +void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t value) { + g_scaling_registers[pled->driver][pled->v] = value; + g_scaling_registers_update_required[pled->driver] = true; +} + +void is31fl3741_flush(void) { + is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_1, 0); +#if defined(IS31FL3741_I2C_ADDRESS_2) + is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_2, 1); +# if defined(IS31FL3741_I2C_ADDRESS_3) + is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_3, 2); +# if defined(IS31FL3741_I2C_ADDRESS_4) + is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_4, 3); +# endif +# endif +#endif +} |