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-rw-r--r--quantum/connection/connection.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/quantum/connection/connection.c b/quantum/connection/connection.c
new file mode 100644
index 0000000000..c7f3c4b424
--- /dev/null
+++ b/quantum/connection/connection.c
@@ -0,0 +1,147 @@
+// Copyright 2025 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "connection.h"
+#include "eeconfig.h"
+#include "usb_util.h"
+#include "util.h"
+
+// ======== DEPRECATED DEFINES - DO NOT USE ========
+#ifdef OUTPUT_DEFAULT
+# undef CONNECTION_HOST_DEFAULT
+# define CONNECTION_HOST_DEFAULT OUTPUT_DEFAULT
+#endif
+
+__attribute__((weak)) void set_output_user(uint8_t output) {}
+// ========
+
+#ifdef BLUETOOTH_ENABLE
+# ifdef BLUETOOTH_BLUEFRUIT_LE
+# include "bluefruit_le.h"
+# define bluetooth_is_connected() bluefruit_le_is_connected()
+# else
+// TODO: drivers should check if BT is connected here
+# define bluetooth_is_connected() true
+# endif
+#endif
+
+#define CONNECTION_HOST_INVALID 0xFF
+
+#ifndef CONNECTION_HOST_DEFAULT
+# define CONNECTION_HOST_DEFAULT CONNECTION_HOST_AUTO
+#endif
+
+static const connection_host_t host_candidates[] = {
+ CONNECTION_HOST_AUTO,
+ CONNECTION_HOST_USB,
+#ifdef BLUETOOTH_ENABLE
+ CONNECTION_HOST_BLUETOOTH,
+#endif
+#if 0
+ CONNECTION_HOST_2P4GHZ,
+#endif
+};
+
+#define HOST_CANDIDATES_COUNT ARRAY_SIZE(host_candidates)
+
+static connection_config_t config = {.desired_host = CONNECTION_HOST_INVALID};
+
+void eeconfig_update_connection_default(void) {
+ config.desired_host = CONNECTION_HOST_DEFAULT;
+
+ eeconfig_update_connection(&config);
+}
+
+void connection_init(void) {
+ eeconfig_read_connection(&config);
+ if (config.desired_host == CONNECTION_HOST_INVALID) {
+ eeconfig_update_connection_default();
+ }
+}
+
+__attribute__((weak)) void connection_host_changed_user(connection_host_t host) {}
+__attribute__((weak)) void connection_host_changed_kb(connection_host_t host) {}
+
+static void handle_host_changed(void) {
+ connection_host_changed_user(config.desired_host);
+ connection_host_changed_kb(config.desired_host);
+
+ // TODO: Remove deprecated callback
+ set_output_user(config.desired_host);
+}
+
+void connection_set_host_noeeprom(connection_host_t host) {
+ if (config.desired_host == host) {
+ return;
+ }
+
+ config.desired_host = host;
+
+ handle_host_changed();
+}
+
+void connection_set_host(connection_host_t host) {
+ connection_set_host_noeeprom(host);
+
+ eeconfig_update_connection(&config);
+}
+
+void connection_next_host_noeeprom(void) {
+ uint8_t next = 0;
+ for (uint8_t i = 0; i < HOST_CANDIDATES_COUNT; i++) {
+ if (host_candidates[i] == config.desired_host) {
+ next = i == HOST_CANDIDATES_COUNT - 1 ? 0 : i + 1;
+ break;
+ }
+ }
+
+ connection_set_host_noeeprom(host_candidates[next]);
+}
+
+void connection_next_host(void) {
+ connection_next_host_noeeprom();
+
+ eeconfig_update_connection(&config);
+}
+
+void connection_prev_host_noeeprom(void) {
+ uint8_t next = 0;
+ for (uint8_t i = 0; i < HOST_CANDIDATES_COUNT; i++) {
+ if (host_candidates[i] == config.desired_host) {
+ next = i == 0 ? HOST_CANDIDATES_COUNT - 1 : i - 1;
+ break;
+ }
+ }
+
+ connection_set_host_noeeprom(host_candidates[next]);
+}
+
+void connection_prev_host(void) {
+ connection_prev_host_noeeprom();
+
+ eeconfig_update_connection(&config);
+}
+
+connection_host_t connection_get_host_raw(void) {
+ return config.desired_host;
+}
+
+connection_host_t connection_auto_detect_host(void) {
+ if (usb_connected_state()) {
+ return CONNECTION_HOST_USB;
+ }
+
+#ifdef BLUETOOTH_ENABLE
+ if (bluetooth_is_connected()) {
+ return CONNECTION_HOST_BLUETOOTH;
+ }
+#endif
+
+ return CONNECTION_HOST_NONE;
+}
+
+connection_host_t connection_get_host(void) {
+ if (config.desired_host == CONNECTION_HOST_AUTO) {
+ return connection_auto_detect_host();
+ }
+ return config.desired_host;
+}