diff options
Diffstat (limited to 'drivers/led/snled27351-simple.c')
| -rw-r--r-- | drivers/led/snled27351-simple.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/drivers/led/snled27351-simple.c b/drivers/led/snled27351-simple.c deleted file mode 100644 index b2054c96d5..0000000000 --- a/drivers/led/snled27351-simple.c +++ /dev/null @@ -1,266 +0,0 @@ -/* Copyright 2021 @ Keychron (https://www.keychron.com) - * - * 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 "snled27351-simple.h" -#include "i2c_master.h" - -#define SNLED27351_PWM_REGISTER_COUNT 192 -#define SNLED27351_LED_CONTROL_REGISTER_COUNT 24 - -#ifndef SNLED27351_I2C_TIMEOUT -# define SNLED27351_I2C_TIMEOUT 100 -#endif - -#ifndef SNLED27351_I2C_PERSISTENCE -# define SNLED27351_I2C_PERSISTENCE 0 -#endif - -#ifndef SNLED27351_PHASE_CHANNEL -# define SNLED27351_PHASE_CHANNEL SNLED27351_SCAN_PHASE_12_CHANNEL -#endif - -#ifndef SNLED27351_CURRENT_TUNE -# define SNLED27351_CURRENT_TUNE \ - { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } -#endif - -// Transfer buffer for TWITransmitData() -uint8_t g_twi_transfer_buffer[20]; - -// These buffers match the SNLED27351 PWM registers. -// The control buffers match the PG0 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 snled27351_write_pwm_buffer() but it's -// probably not worth the extra complexity. -uint8_t g_pwm_buffer[SNLED27351_DRIVER_COUNT][SNLED27351_PWM_REGISTER_COUNT]; -bool g_pwm_buffer_update_required[SNLED27351_DRIVER_COUNT] = {false}; - -uint8_t g_led_control_registers[SNLED27351_DRIVER_COUNT][SNLED27351_LED_CONTROL_REGISTER_COUNT] = {0}; -bool g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT] = {false}; - -bool snled27351_write_register(uint8_t addr, uint8_t reg, uint8_t data) { - // If the transaction fails function returns false. - g_twi_transfer_buffer[0] = reg; - g_twi_transfer_buffer[1] = data; - -#if SNLED27351_I2C_PERSISTENCE > 0 - for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) { - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } - } -#else - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } -#endif - return true; -} - -bool snled27351_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) { - // Assumes PG1 is already selected. - // If any of the transactions fails function returns false. - // Transmit PWM registers in 12 transfers of 16 bytes. - // g_twi_transfer_buffer[] is 20 bytes - - // Iterate over the pwm_buffer contents at 16 byte intervals. - for (int i = 0; i < SNLED27351_PWM_REGISTER_COUNT; i += 16) { - g_twi_transfer_buffer[0] = i; - // Copy the data from i to i+15. - // Device will auto-increment register for data after the first byte - // Thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer. - for (int j = 0; j < 16; j++) { - g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j]; - } - -#if SNLED27351_I2C_PERSISTENCE > 0 - for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) { - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } - } -#else - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } -#endif - } - return true; -} - -void snled27351_init_drivers(void) { - i2c_init(); - - snled27351_init(SNLED27351_I2C_ADDRESS_1); -#if defined(SNLED27351_I2C_ADDRESS_2) - snled27351_init(SNLED27351_I2C_ADDRESS_2); -# if defined(SNLED27351_I2C_ADDRESS_3) - snled27351_init(SNLED27351_I2C_ADDRESS_3); -# if defined(SNLED27351_I2C_ADDRESS_4) - snled27351_init(SNLED27351_I2C_ADDRESS_4); -# endif -# endif -#endif - - for (int i = 0; i < SNLED27351_LED_COUNT; i++) { - snled27351_set_led_control_register(i, true); - } - - snled27351_update_led_control_registers(SNLED27351_I2C_ADDRESS_1, 0); -#if defined(SNLED27351_I2C_ADDRESS_2) - snled27351_update_led_control_registers(SNLED27351_I2C_ADDRESS_2, 1); -# if defined(SNLED27351_I2C_ADDRESS_3) - snled27351_update_led_control_registers(SNLED27351_I2C_ADDRESS_3, 2); -# if defined(SNLED27351_I2C_ADDRESS_4) - snled27351_update_led_control_registers(SNLED27351_I2C_ADDRESS_4, 3); -# endif -# endif -#endif -} - -void snled27351_init(uint8_t addr) { - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); - // Setting LED driver to shutdown mode - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_SHUTDOWN); - // Setting internal channel pulldown/pullup - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_PULLDOWNUP, SNLED27351_PULLDOWNUP_ALL_ENABLED); - // Select number of scan phase - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SCAN_PHASE, SNLED27351_PHASE_CHANNEL); - // Setting PWM Delay Phase - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SLEW_RATE_CONTROL_MODE_1, SNLED27351_SLEW_RATE_CONTROL_MODE_1_PDP_ENABLE); - // Setting Driving/Sinking Channel Slew Rate - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SLEW_RATE_CONTROL_MODE_2, SNLED27351_SLEW_RATE_CONTROL_MODE_2_DSL_ENABLE | SNLED27351_SLEW_RATE_CONTROL_MODE_2_SSL_ENABLE); - // Setting Iref - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SLEEP, 0); - // Set LED CONTROL PAGE (Page 0) - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_LED_CONTROL); - for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) { - snled27351_write_register(addr, i, 0x00); - } - - // Set PWM PAGE (Page 1) - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_PWM); - for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) { - snled27351_write_register(addr, i, 0x00); - } - - // Set CURRENT PAGE (Page 4) - uint8_t current_tune_reg_list[SNLED27351_LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE; - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_CURRENT_TUNE); - for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) { - snled27351_write_register(addr, i, current_tune_reg_list[i]); - } - - // Enable LEDs ON/OFF - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_LED_CONTROL); - for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) { - snled27351_write_register(addr, i, 0xFF); - } - - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); - // Setting LED driver to normal mode - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_NORMAL); -} - -void snled27351_set_value(int index, uint8_t value) { - snled27351_led_t led; - if (index >= 0 && index < SNLED27351_LED_COUNT) { - memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led)); - - if (g_pwm_buffer[led.driver][led.v] == value) { - return; - } - g_pwm_buffer[led.driver][led.v] = value; - g_pwm_buffer_update_required[led.driver] = true; - } -} - -void snled27351_set_value_all(uint8_t value) { - for (int i = 0; i < SNLED27351_LED_COUNT; i++) { - snled27351_set_value(i, value); - } -} - -void snled27351_set_led_control_register(uint8_t index, bool value) { - snled27351_led_t led; - memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led)); - - uint8_t control_register = led.v / 8; - uint8_t bit_value = led.v % 8; - - if (value) { - g_led_control_registers[led.driver][control_register] |= (1 << bit_value); - } else { - g_led_control_registers[led.driver][control_register] &= ~(1 << bit_value); - } - - g_led_control_registers_update_required[led.driver] = true; -} - -void snled27351_update_pwm_buffers(uint8_t addr, uint8_t index) { - if (g_pwm_buffer_update_required[index]) { - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_PWM); - - // If any of the transactions fail we risk writing dirty PG0, - // refresh page 0 just in case. - if (!snled27351_write_pwm_buffer(addr, g_pwm_buffer[index])) { - g_led_control_registers_update_required[index] = true; - } - } - g_pwm_buffer_update_required[index] = false; -} - -void snled27351_update_led_control_registers(uint8_t addr, uint8_t index) { - if (g_led_control_registers_update_required[index]) { - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_LED_CONTROL); - for (int i = 0; i < SNLED27351_LED_CONTROL_REGISTER_COUNT; i++) { - snled27351_write_register(addr, i, g_led_control_registers[index][i]); - } - } - g_led_control_registers_update_required[index] = false; -} - -void snled27351_flush(void) { - snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_1, 0); -#if defined(SNLED27351_I2C_ADDRESS_2) - snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_2, 1); -# if defined(SNLED27351_I2C_ADDRESS_3) - snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_3, 2); -# if defined(SNLED27351_I2C_ADDRESS_4) - snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_4, 3); -# endif -# endif -#endif -} - -void snled27351_sw_return_normal(uint8_t addr) { - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); - // Setting LED driver to normal mode - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_NORMAL); -} - -void snled27351_sw_shutdown(uint8_t addr) { - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); - // Setting LED driver to shutdown mode - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_SHUTDOWN); - // Write SW Sleep Register - snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SLEEP, SNLED27351_SOFTWARE_SLEEP_ENABLE); -} |