qmk-firmware/tmk_core/common/arm_atsam/suspend.c

#include "matrix.h"
#include "i2c_master.h"
#include "led_matrix.h"
#include "suspend.h"

/** \brief Suspend idle
 *
 * FIXME: needs doc
 */
void suspend_idle(uint8_t time) { /* Note: Not used anywhere currently */
}

/** \brief Run user level Power down
 *
 * FIXME: needs doc
 */
__attribute__((weak)) void suspend_power_down_user(void) {}

/** \brief Run keyboard level Power down
 *
 * FIXME: needs doc
 */
__attribute__((weak)) void suspend_power_down_kb(void) { suspend_power_down_user(); }

/** \brief Suspend power down
 *
 * FIXME: needs doc
 */
void suspend_power_down(void) {
#ifdef RGB_MATRIX_ENABLE
    I2C3733_Control_Set(0);  // Disable LED driver
#endif

    suspend_power_down_kb();
}

__attribute__((weak)) void matrix_power_up(void) {}
__attribute__((weak)) void matrix_power_down(void) {}
bool                       suspend_wakeup_condition(void) {
    matrix_power_up();
    matrix_scan();
    matrix_power_down();
    for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
        if (matrix_get_row(r)) return true;
    }
    return false;
}

/** \brief run user level code immediately after wakeup
 *
 * FIXME: needs doc
 */
__attribute__((weak)) void suspend_wakeup_init_user(void) {}

/** \brief run keyboard level code immediately after wakeup
 *
 * FIXME: needs doc
 */
__attribute__((weak)) void suspend_wakeup_init_kb(void) { suspend_wakeup_init_user(); }

/** \brief run immediately after wakeup
 *
 * FIXME: needs doc
 */
void suspend_wakeup_init(void) {
#ifdef RGB_MATRIX_ENABLE
#    ifdef USE_MASSDROP_CONFIGURATOR
    if (led_enabled) {
        I2C3733_Control_Set(1);
    }
#    else
    I2C3733_Control_Set(1);
#    endif
#endif

    suspend_wakeup_init_kb();
}