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path: root/drivers/led/issi/is31fl3742a.c
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Diffstat (limited to 'drivers/led/issi/is31fl3742a.c')
-rw-r--r--drivers/led/issi/is31fl3742a.c219
1 files changed, 219 insertions, 0 deletions
diff --git a/drivers/led/issi/is31fl3742a.c b/drivers/led/issi/is31fl3742a.c
new file mode 100644
index 0000000000..4ff08cd75c
--- /dev/null
+++ b/drivers/led/issi/is31fl3742a.c
@@ -0,0 +1,219 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ * Copyright 2018 Yiancar
+ * Copyright 2020 MelGeek
+ * Copyright 2021 MasterSpoon
+ *
+ * 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 "is31fl3742a.h"
+#include "i2c_master.h"
+#include "wait.h"
+
+#define IS31FL3742A_PWM_REGISTER_COUNT 180
+#define IS31FL3742A_SCALING_REGISTER_COUNT 180
+
+#ifndef IS31FL3742A_I2C_TIMEOUT
+# define IS31FL3742A_I2C_TIMEOUT 100
+#endif
+
+#ifndef IS31FL3742A_I2C_PERSISTENCE
+# define IS31FL3742A_I2C_PERSISTENCE 0
+#endif
+
+#ifndef IS31FL3742A_CONFIGURATION
+# define IS31FL3742A_CONFIGURATION 0x31
+#endif
+
+#ifndef IS31FL3742A_PWM_FREQUENCY
+# define IS31FL3742A_PWM_FREQUENCY IS31FL3742A_PWM_FREQUENCY_29K_HZ
+#endif
+
+#ifndef IS31FL3742A_SW_PULLDOWN
+# define IS31FL3742A_SW_PULLDOWN IS31FL3742A_PDR_8K_OHM
+#endif
+
+#ifndef IS31FL3742A_CS_PULLUP
+# define IS31FL3742A_CS_PULLUP IS31FL3742A_PUR_8K_OHM
+#endif
+
+#ifndef IS31FL3742A_GLOBAL_CURRENT
+# define IS31FL3742A_GLOBAL_CURRENT 0xFF
+#endif
+
+const uint8_t i2c_addresses[IS31FL3742A_DRIVER_COUNT] = {
+ IS31FL3742A_I2C_ADDRESS_1,
+#ifdef IS31FL3742A_I2C_ADDRESS_2
+ IS31FL3742A_I2C_ADDRESS_2,
+# ifdef IS31FL3742A_I2C_ADDRESS_3
+ IS31FL3742A_I2C_ADDRESS_3,
+# ifdef IS31FL3742A_I2C_ADDRESS_4
+ IS31FL3742A_I2C_ADDRESS_4,
+# endif
+# endif
+#endif
+};
+
+typedef struct is31fl3742a_driver_t {
+ uint8_t pwm_buffer[IS31FL3742A_PWM_REGISTER_COUNT];
+ bool pwm_buffer_dirty;
+ uint8_t scaling_buffer[IS31FL3742A_SCALING_REGISTER_COUNT];
+ bool scaling_buffer_dirty;
+} PACKED is31fl3742a_driver_t;
+
+is31fl3742a_driver_t driver_buffers[IS31FL3742A_DRIVER_COUNT] = {{
+ .pwm_buffer = {0},
+ .pwm_buffer_dirty = false,
+ .scaling_buffer = {0},
+ .scaling_buffer_dirty = false,
+}};
+
+void is31fl3742a_write_register(uint8_t index, uint8_t reg, uint8_t data) {
+#if IS31FL3742A_I2C_PERSISTENCE > 0
+ for (uint8_t i = 0; i < IS31FL3742A_I2C_PERSISTENCE; i++) {
+ if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3742A_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
+ }
+#else
+ i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3742A_I2C_TIMEOUT);
+#endif
+}
+
+void is31fl3742a_select_page(uint8_t index, uint8_t page) {
+ is31fl3742a_write_register(index, IS31FL3742A_REG_COMMAND_WRITE_LOCK, IS31FL3742A_COMMAND_WRITE_LOCK_MAGIC);
+ is31fl3742a_write_register(index, IS31FL3742A_REG_COMMAND, page);
+}
+
+void is31fl3742a_write_pwm_buffer(uint8_t index) {
+ // Assumes page 0 is already selected.
+ // Transmit PWM registers in 6 transfers of 30 bytes.
+
+ // Iterate over the pwm_buffer contents at 30 byte intervals.
+ for (uint8_t i = 0; i < IS31FL3742A_PWM_REGISTER_COUNT; i += 30) {
+#if IS31FL3742A_I2C_PERSISTENCE > 0
+ for (uint8_t j = 0; j < IS31FL3742A_I2C_PERSISTENCE; j++) {
+ if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer + i, 30, IS31FL3742A_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
+ }
+#else
+ i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer + i, 30, IS31FL3742A_I2C_TIMEOUT);
+#endif
+ }
+}
+
+void is31fl3742a_init_drivers(void) {
+ i2c_init();
+
+ for (uint8_t i = 0; i < IS31FL3742A_DRIVER_COUNT; i++) {
+ is31fl3742a_init(i);
+ }
+
+ for (int i = 0; i < IS31FL3742A_LED_COUNT; i++) {
+ is31fl3742a_set_scaling_register(i, 0xFF, 0xFF, 0xFF);
+ }
+
+ for (uint8_t i = 0; i < IS31FL3742A_DRIVER_COUNT; i++) {
+ is31fl3742a_update_scaling_registers(i);
+ }
+}
+
+void is31fl3742a_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.
+
+ is31fl3742a_select_page(index, IS31FL3742A_COMMAND_SCALING);
+
+ // Turn off all LEDs.
+ for (uint8_t i = 0; i < IS31FL3742A_SCALING_REGISTER_COUNT; i++) {
+ is31fl3742a_write_register(index, i, 0x00);
+ }
+
+ is31fl3742a_select_page(index, IS31FL3742A_COMMAND_PWM);
+
+ for (uint8_t i = 0; i < IS31FL3742A_PWM_REGISTER_COUNT; i++) {
+ is31fl3742a_write_register(index, i, 0x00);
+ }
+
+ is31fl3742a_select_page(index, IS31FL3742A_COMMAND_FUNCTION);
+
+ is31fl3742a_write_register(index, IS31FL3742A_FUNCTION_REG_PULLDOWNUP, (IS31FL3742A_SW_PULLDOWN << 4) | IS31FL3742A_CS_PULLUP);
+ is31fl3742a_write_register(index, IS31FL3742A_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3742A_GLOBAL_CURRENT);
+ is31fl3742a_write_register(index, IS31FL3742A_FUNCTION_REG_PWM_FREQUENCY, (IS31FL3742A_PWM_FREQUENCY & 0b0111));
+ is31fl3742a_write_register(index, IS31FL3742A_FUNCTION_REG_CONFIGURATION, IS31FL3742A_CONFIGURATION);
+
+ // Wait 10ms to ensure the device has woken up.
+ wait_ms(10);
+}
+
+void is31fl3742a_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
+ is31fl3742a_led_t led;
+
+ if (index >= 0 && index < IS31FL3742A_LED_COUNT) {
+ memcpy_P(&led, (&g_is31fl3742a_leds[index]), sizeof(led));
+
+ if (driver_buffers[led.driver].pwm_buffer[led.r] == red && driver_buffers[led.driver].pwm_buffer[led.g] == green && driver_buffers[led.driver].pwm_buffer[led.b] == blue) {
+ return;
+ }
+
+ driver_buffers[led.driver].pwm_buffer[led.r] = red;
+ driver_buffers[led.driver].pwm_buffer[led.g] = green;
+ driver_buffers[led.driver].pwm_buffer[led.b] = blue;
+ driver_buffers[led.driver].pwm_buffer_dirty = true;
+ }
+}
+
+void is31fl3742a_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
+ for (int i = 0; i < IS31FL3742A_LED_COUNT; i++) {
+ is31fl3742a_set_color(i, red, green, blue);
+ }
+}
+
+void is31fl3742a_set_scaling_register(uint8_t index, uint8_t red, uint8_t green, uint8_t blue) {
+ is31fl3742a_led_t led;
+ memcpy_P(&led, (&g_is31fl3742a_leds[index]), sizeof(led));
+
+ driver_buffers[led.driver].scaling_buffer[led.r] = red;
+ driver_buffers[led.driver].scaling_buffer[led.g] = green;
+ driver_buffers[led.driver].scaling_buffer[led.b] = blue;
+ driver_buffers[led.driver].scaling_buffer_dirty = true;
+}
+
+void is31fl3742a_update_pwm_buffers(uint8_t index) {
+ if (driver_buffers[index].pwm_buffer_dirty) {
+ is31fl3742a_select_page(index, IS31FL3742A_COMMAND_PWM);
+
+ is31fl3742a_write_pwm_buffer(index);
+
+ driver_buffers[index].pwm_buffer_dirty = false;
+ }
+}
+
+void is31fl3742a_update_scaling_registers(uint8_t index) {
+ if (driver_buffers[index].scaling_buffer_dirty) {
+ is31fl3742a_select_page(index, IS31FL3742A_COMMAND_SCALING);
+
+ for (uint8_t i = 0; i < IS31FL3742A_SCALING_REGISTER_COUNT; i++) {
+ is31fl3742a_write_register(index, i, driver_buffers[index].scaling_buffer[i]);
+ }
+
+ driver_buffers[index].scaling_buffer_dirty = false;
+ }
+}
+
+void is31fl3742a_flush(void) {
+ for (uint8_t i = 0; i < IS31FL3742A_DRIVER_COUNT; i++) {
+ is31fl3742a_update_pwm_buffers(i);
+ }
+}