Enable g_is31_leds PROGMEM for RGB Matrix IS31FL3737 driver (#13480)

docs/feature_rgb_matrix.md

@@ -171,7 +171,7 @@ Currently only a single drivers is supported, but it would be trivial to support
 Define these arrays listing all the LEDs in your `<keyboard>.c`:
 
 ```c
-const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
+const is31_led PROGMEM g_is31_leds[DRIVER_LED_TOTAL] = {
 /* Refer to IS31 manual for these locations
  *   driver
  *   |  R location

drivers/issi/is31fl3737.c

@@ -19,6 +19,7 @@
 #include "is31fl3737.h"
 #include "i2c_master.h"
 #include "wait.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)
@@ -153,7 +154,9 @@ void IS31FL3737_init(uint8_t addr) {
 
 void IS31FL3737_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];
+        // copy the led config from progmem to SRAM
+        is31_led led;
+        memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
 
         g_pwm_buffer[led.driver][led.r] = red;
         g_pwm_buffer[led.driver][led.g] = green;
@@ -169,7 +172,9 @@ void IS31FL3737_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
 }
 
 void IS31FL3737_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
-    is31_led led = g_is31_leds[index];
+    // copy the led config from progmem to SRAM
+    is31_led led;
+    memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
 
     uint8_t control_register_r = led.r / 8;
     uint8_t control_register_g = led.g / 8;

keyboards/mt84/mt84.c

@@ -16,7 +16,7 @@
 #include "mt84.h"
 
 #ifdef RGB_MATRIX_ENABLE
-const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
+const is31_led PROGMEM g_is31_leds[DRIVER_LED_TOTAL] = {
  /* Refer to IS31 manual for these locations
  *   driver
  *   |  R location

keyboards/planck/ez/ez.c

@@ -19,7 +19,7 @@
 
 keyboard_config_t keyboard_config;
 #ifdef RGB_MATRIX_ENABLE
-const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
+const is31_led PROGMEM g_is31_leds[DRIVER_LED_TOTAL] = {
 /* Refer to IS31 manual for these locations
  *   driver
  *   |  R location

tmk_core/common/progmem.h

@@ -3,6 +3,7 @@
 #if defined(__AVR__)
 #    include <avr/pgmspace.h>
 #else
+#    include <string.h>
 #    define PROGMEM
 #    define PSTR(x) x
 #    define PGM_P const char*