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author | Ryan <[email protected]> | 2024-01-04 17:05:37 +1100 |
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committer | GitHub <[email protected]> | 2024-01-04 06:05:37 +0000 |
commit | 597de0e29841aa6c738eb40454620bc30d44099a (patch) | |
tree | 90a7e2d7c6732e58199c1e17850b4c55fbf8617b /drivers/led/snled27351-mono.c | |
parent | 1bd9b9204d233ee48c5a3f39d70cbc93b084cb19 (diff) | |
download | qmk_firmware-597de0e29841aa6c738eb40454620bc30d44099a.tar.gz qmk_firmware-597de0e29841aa6c738eb40454620bc30d44099a.zip |
LED drivers: rename "simple" to "mono" (#22814)
Diffstat (limited to 'drivers/led/snled27351-mono.c')
-rw-r--r-- | drivers/led/snled27351-mono.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/drivers/led/snled27351-mono.c b/drivers/led/snled27351-mono.c new file mode 100644 index 0000000000..4519243e0e --- /dev/null +++ b/drivers/led/snled27351-mono.c @@ -0,0 +1,272 @@ +/* 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-mono.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 + +uint8_t i2c_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. + i2c_transfer_buffer[0] = reg; + i2c_transfer_buffer[1] = data; + +#if SNLED27351_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) { + if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) { + return false; + } + } +#else + if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) { + return false; + } +#endif + return true; +} + +void snled27351_select_page(uint8_t addr, uint8_t page) { + snled27351_write_register(addr, SNLED27351_REG_COMMAND, page); +} + +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. + // i2c_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) { + i2c_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++) { + i2c_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, i2c_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) { + return false; + } + } +#else + if (i2c_transmit(addr << 1, i2c_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) { + snled27351_select_page(addr, 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); + + snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL); + + for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) { + snled27351_write_register(addr, i, 0x00); + } + + snled27351_select_page(addr, SNLED27351_COMMAND_PWM); + + for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) { + snled27351_write_register(addr, i, 0x00); + } + + snled27351_select_page(addr, SNLED27351_COMMAND_CURRENT_TUNE); + + uint8_t current_tune_reg_list[SNLED27351_LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE; + for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) { + snled27351_write_register(addr, i, current_tune_reg_list[i]); + } + + snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL); + + // Enable LEDs ON/OFF + for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) { + snled27351_write_register(addr, i, 0xFF); + } + + snled27351_select_page(addr, 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_select_page(addr, 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_select_page(addr, 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) { + snled27351_select_page(addr, 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) { + snled27351_select_page(addr, 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); +} |