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Diffstat (limited to 'drivers/issi/is31fl3741.c')
-rw-r--r--drivers/issi/is31fl3741.c289
1 files changed, 289 insertions, 0 deletions
diff --git a/drivers/issi/is31fl3741.c b/drivers/issi/is31fl3741.c
new file mode 100644
index 0000000000..45d2b40990
--- /dev/null
+++ b/drivers/issi/is31fl3741.c
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+/* 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 "wait.h"
+
+#include "is31fl3741.h"
+#include <string.h>
+#include "i2c_master.h"
+#include "progmem.h"
+
+
+// This is a 7-bit address, that gets left-shifted and bit 0
+// set to 0 for write, 1 for read (as per I2C protocol)
+// The address will vary depending on your wiring:
+// 00 <-> GND
+// 01 <-> SCL
+// 10 <-> SDA
+// 11 <-> VCC
+// ADDR1 represents A1:A0 of the 7-bit address.
+// ADDR2 represents A3:A2 of the 7-bit address.
+// The result is: 0b101(ADDR2)(ADDR1)
+#define ISSI_ADDR_DEFAULT 0x60
+
+#define ISSI_COMMANDREGISTER 0xFD
+#define ISSI_COMMANDREGISTER_WRITELOCK 0xFE
+#define ISSI_INTERRUPTMASKREGISTER 0xF0
+#define ISSI_INTERRUPTSTATUSREGISTER 0xF1
+#define ISSI_IDREGISTER 0xFC
+
+#define ISSI_PAGE_PWM0 0x00 // PG0
+#define ISSI_PAGE_PWM1 0x01 // PG1
+#define ISSI_PAGE_SCALING_0 0x02 // PG2
+#define ISSI_PAGE_SCALING_1 0x03 // PG3
+#define ISSI_PAGE_FUNCTION 0x04 // PG4
+
+#define ISSI_REG_CONFIGURATION 0x00 // PG4
+#define ISSI_REG_GLOBALCURRENT 0x01 // PG4
+#define ISSI_REG_PULLDOWNUP 0x02 // PG4
+#define ISSI_REG_RESET 0x3F // PG4
+
+#ifndef ISSI_TIMEOUT
+# define ISSI_TIMEOUT 100
+#endif
+
+#ifndef ISSI_PERSISTENCE
+# define ISSI_PERSISTENCE 0
+#endif
+
+#define ISSI_MAX_LEDS 351
+
+// Transfer buffer for TWITransmitData()
+uint8_t g_twi_transfer_buffer[20] = {0xFF};
+
+// These buffers match the IS31FL3741 and IS31FL3741A PWM registers.
+// The scaling buffers match the PG2 and PG3 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[DRIVER_COUNT][ISSI_MAX_LEDS];
+bool g_pwm_buffer_update_required = false;
+bool g_scaling_registers_update_required[DRIVER_COUNT] = {false};
+
+uint8_t g_scaling_registers[DRIVER_COUNT][ISSI_MAX_LEDS];
+
+uint32_t IS31FL3741_get_cw_sw_position(uint8_t cs, uint8_t sw) {
+ uint32_t pos = 0;
+
+ if (cs < 31) {
+ if (sw < 7) {
+ pos = (sw - 1) * 30 + (cs - 1);
+
+ } else {
+ pos = 0xB4 + (sw - 7) * 30 + (cs - 1);
+ }
+ } else {
+ pos = 0xB4 + 0x5A + (sw - 1) * 9 + (cs - 31);
+ }
+
+ return pos;
+}
+
+void IS31FL3741_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
+ g_twi_transfer_buffer[0] = reg;
+ g_twi_transfer_buffer[1] = data;
+
+#if ISSI_PERSISTENCE > 0
+ for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) == 0) break;
+ }
+#else
+ i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
+#endif
+}
+
+bool IS31FL3741_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
+ // unlock the command register and select PG2
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM0);
+
+ for (int i = 0; i < 342; i += 18) {
+ g_twi_transfer_buffer[0] = i % 180;
+
+ if (i == 180) {
+ // unlock the command register and select PG2
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM1);
+ }
+
+ memcpy(g_twi_transfer_buffer + 1, pwm_buffer + i, 18);
+
+#if ISSI_PERSISTENCE > 0
+ for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 19, ISSI_TIMEOUT) != 0) {
+ return false;
+ }
+ }
+#else
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 19, ISSI_TIMEOUT) != 0) {
+ return false;
+ }
+#endif
+ }
+
+ // transfer the left cause the total number is 351
+ g_twi_transfer_buffer[0] = 162;
+ memcpy(g_twi_transfer_buffer + 1, pwm_buffer + 342, 9);
+
+#if ISSI_PERSISTENCE > 0
+ for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 10, ISSI_TIMEOUT) != 0) {
+ return false;
+ }
+ }
+#else
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 10, ISSI_TIMEOUT) != 0) {
+ return false;
+ }
+#endif
+
+ return true;
+}
+
+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.
+
+ // Unlock the command register.
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+ // Select PG4
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
+
+ // Set to Normal operation
+ IS31FL3741_write_register(addr, ISSI_REG_CONFIGURATION, 0x01);
+
+ // Set Golbal Current Control Register
+ IS31FL3741_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
+ // Set Pull up & Down for SWx CSy
+ IS31FL3741_write_register(addr, ISSI_REG_PULLDOWNUP, 0x77);
+
+// IS31FL3741_update_led_scaling_registers(addr, 0xFF, 0xFF, 0xFF);
+
+// Wait 10ms to ensure the device has woken up.
+ wait_ms(10);
+}
+
+void IS31FL3741_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
+ if (index >= 0 && index < DRIVER_LED_TOTAL) {
+ is31_led led = g_is31_leds[index];
+ uint32_t rp = 0, gp = 0, bp = 0;
+
+ rp = IS31FL3741_get_cw_sw_position(led.rcs, led.rsw);
+ gp = IS31FL3741_get_cw_sw_position(led.gcs, led.gsw);
+ bp = IS31FL3741_get_cw_sw_position(led.bcs, led.bsw);
+
+ g_pwm_buffer[led.driver][rp] = red;
+ g_pwm_buffer[led.driver][gp] = green;
+ g_pwm_buffer[led.driver][bp] = blue;
+ g_pwm_buffer_update_required = true;
+ }
+}
+
+void IS31FL3741_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
+ for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
+ IS31FL3741_set_color(i, red, green, blue);
+ }
+}
+
+void IS31FL3741_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
+ is31_led led = g_is31_leds[index];
+
+ uint32_t scaling_register_r = IS31FL3741_get_cw_sw_position(led.rcs, led.rsw);
+ uint32_t scaling_register_g = IS31FL3741_get_cw_sw_position(led.gcs, led.gsw);
+ uint32_t scaling_register_b = IS31FL3741_get_cw_sw_position(led.bcs, led.bsw);
+
+ if (red) {
+ g_scaling_registers[led.driver][scaling_register_r] = 0xFF;
+ } else {
+ g_scaling_registers[led.driver][scaling_register_r] = 0x00;
+ }
+
+ if (green) {
+ g_scaling_registers[led.driver][scaling_register_g] = 0xFF;
+ } else {
+ g_scaling_registers[led.driver][scaling_register_g] = 0x00;
+ }
+
+ if (blue) {
+ g_scaling_registers[led.driver][scaling_register_b] = 0xFF;
+ } else {
+ g_scaling_registers[led.driver][scaling_register_b] = 0x00;
+ }
+
+ g_scaling_registers_update_required[led.driver] = true;
+}
+
+void IS31FL3741_update_pwm_buffers(uint8_t addr1, uint8_t addr2) {
+ if (g_pwm_buffer_update_required) {
+ IS31FL3741_write_pwm_buffer(addr1, g_pwm_buffer[0]);
+ }
+
+ g_pwm_buffer_update_required = false;
+}
+
+void IS31FL3741_set_pwm_buffer(const is31_led *pled, uint8_t red, uint8_t green, uint8_t blue) {
+ uint32_t rp = 0, gp = 0, bp = 0;
+
+ rp = IS31FL3741_get_cw_sw_position(pled->rcs, pled->rsw);
+ gp = IS31FL3741_get_cw_sw_position(pled->gcs, pled->gsw);
+ bp = IS31FL3741_get_cw_sw_position(pled->bcs, pled->bsw);
+
+ g_pwm_buffer[pled->driver][rp] = red;
+ g_pwm_buffer[pled->driver][gp] = green;
+ g_pwm_buffer[pled->driver][bp] = blue;
+
+ g_pwm_buffer_update_required = true;
+}
+
+void IS31FL3741_update_led_control_registers(uint8_t addr, uint8_t index) {
+ if (g_scaling_registers_update_required[index]) {
+ // unlock the command register and select PG2
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_SCALING_0);
+
+ for (int i = 0; i < 180; ++i) {
+ IS31FL3741_write_register(addr, i, g_scaling_registers[0][i]);
+ }
+
+ // unlock the command register and select PG3
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
+ IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_SCALING_1);
+
+ for (int i = 0; i < 171; ++i) {
+ IS31FL3741_write_register(addr, i, g_scaling_registers[0][180 + i]);
+ }
+ }
+}
+
+void IS31FL3741_set_scaling_registers(const is31_led *pled, uint8_t red, uint8_t green, uint8_t blue) {
+ uint32_t rp = 0, gp = 0, bp = 0;
+
+ rp = IS31FL3741_get_cw_sw_position(pled->rcs, pled->rsw);
+ gp = IS31FL3741_get_cw_sw_position(pled->gcs, pled->gsw);
+ bp = IS31FL3741_get_cw_sw_position(pled->bcs, pled->bsw);
+
+ g_scaling_registers[pled->driver][rp] = red;
+ g_scaling_registers[pled->driver][gp] = green;
+ g_scaling_registers[pled->driver][bp] = blue;
+}