Dedupe extrakey report struct, and send functions in V-USB & LUFA (#7993)

* Dedupe extrakey report struct, and send functions in V-USB & LUFA

* Doc comment for consistency

* Wrap it in ifdef to prevent unused function error

* Do the same for ATSAM

5 files changed, 34 insertions, 65 deletions

diff --git a/tmk_core/protocol/arm_atsam/main_arm_atsam.c b/tmk_core/protocol/arm_atsam/main_arm_atsam.c
index a42d9daf38..e15d51a263 100644
--- a/tmk_core/protocol/arm_atsam/main_arm_atsam.c
+++ b/tmk_core/protocol/arm_atsam/main_arm_atsam.c
@@ -110,40 +110,34 @@ void send_mouse(report_mouse_t *report) {
 #endif  // MOUSEKEY_ENABLE
 }
 
-void send_system(uint16_t data) {
 #ifdef EXTRAKEY_ENABLE
+void send_extra(uint8_t report_id, uint16_t data) {
     uint32_t irqflags;
 
     irqflags = __get_PRIMASK();
     __disable_irq();
     __DMB();
 
-    udi_hid_exk_report.desc.report_id = REPORT_ID_SYSTEM;
-    if (data != 0) data = data - SYSTEM_POWER_DOWN + 1;
+    udi_hid_exk_report.desc.report_id   = report_id;
     udi_hid_exk_report.desc.report_data = data;
     udi_hid_exk_b_report_valid          = 1;
     udi_hid_exk_send_report();
 
     __DMB();
     __set_PRIMASK(irqflags);
+}
+#endif  // EXTRAKEY_ENABLE
+
+void send_system(uint16_t data) {
+#ifdef EXTRAKEY_ENABLE
+    if (data != 0) data = data - SYSTEM_POWER_DOWN + 1;
+    send_extra(REPORT_ID_SYSTEM,  data);
 #endif  // EXTRAKEY_ENABLE
 }
 
 void send_consumer(uint16_t data) {
 #ifdef EXTRAKEY_ENABLE
-    uint32_t irqflags;
-
-    irqflags = __get_PRIMASK();
-    __disable_irq();
-    __DMB();
-
-    udi_hid_exk_report.desc.report_id   = REPORT_ID_CONSUMER;
-    udi_hid_exk_report.desc.report_data = data;
-    udi_hid_exk_b_report_valid          = 1;
-    udi_hid_exk_send_report();
-
-    __DMB();
-    __set_PRIMASK(irqflags);
+    send_extra(REPORT_ID_CONSUMER, data);
 #endif  // EXTRAKEY_ENABLE
 }
 
diff --git a/tmk_core/protocol/chibios/usb_main.h b/tmk_core/protocol/chibios/usb_main.h
index cd2bb695ba..17041b4f2f 100644
--- a/tmk_core/protocol/chibios/usb_main.h
+++ b/tmk_core/protocol/chibios/usb_main.h
@@ -72,20 +72,6 @@ void mouse_in_cb(USBDriver *usbp, usbep_t ep);
 /* shared IN request callback handler */
 void shared_in_cb(USBDriver *usbp, usbep_t ep);
 
-/* ---------------
- * Extrakey header
- * ---------------
- */
-
-#ifdef EXTRAKEY_ENABLE
-
-/* extra report structure */
-typedef struct {
-    uint8_t  report_id;
-    uint16_t usage;
-} __attribute__((packed)) report_extra_t;
-#endif /* EXTRAKEY_ENABLE */
-
 /* --------------
  * Console header
  * --------------
diff --git a/tmk_core/protocol/lufa/lufa.c b/tmk_core/protocol/lufa/lufa.c
index 4f9ab4f62c..c632b35c6e 100644
--- a/tmk_core/protocol/lufa/lufa.c
+++ b/tmk_core/protocol/lufa/lufa.c
@@ -774,17 +774,17 @@ static void send_mouse(report_mouse_t *report) {
 #endif
 }
 
-/** \brief Send System
+/** \brief Send Extra
  *
  * FIXME: Needs doc
  */
-static void send_system(uint16_t data) {
 #ifdef EXTRAKEY_ENABLE
+static void send_extra(uint8_t report_id, uint16_t data) {
     uint8_t timeout = 255;
 
     if (USB_DeviceState != DEVICE_STATE_Configured) return;
 
-    report_extra_t r = {.report_id = REPORT_ID_SYSTEM, .usage = data - SYSTEM_POWER_DOWN + 1};
+    report_extra_t r = {.report_id = report_id, .usage = data};
     Endpoint_SelectEndpoint(SHARED_IN_EPNUM);
 
     /* Check if write ready for a polling interval around 10ms */
@@ -793,6 +793,16 @@ static void send_system(uint16_t data) {
 
     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
     Endpoint_ClearIN();
+}
+#endif
+
+/** \brief Send System
+ *
+ * FIXME: Needs doc
+ */
+static void send_system(uint16_t data) {
+#ifdef EXTRAKEY_ENABLE
+    send_extra(REPORT_ID_SYSTEM, data - SYSTEM_POWER_DOWN + 1);
 #endif
 }
 
@@ -802,7 +812,6 @@ static void send_system(uint16_t data) {
  */
 static void send_consumer(uint16_t data) {
 #ifdef EXTRAKEY_ENABLE
-    uint8_t timeout = 255;
     uint8_t where   = where_to_send();
 
 #    ifdef BLUETOOTH_ENABLE
@@ -841,15 +850,7 @@ static void send_consumer(uint16_t data) {
         return;
     }
 
-    report_extra_t r = {.report_id = REPORT_ID_CONSUMER, .usage = data};
-    Endpoint_SelectEndpoint(SHARED_IN_EPNUM);
-
-    /* Check if write ready for a polling interval around 10ms */
-    while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
-    if (!Endpoint_IsReadWriteAllowed()) return;
-
-    Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
-    Endpoint_ClearIN();
+    send_extra(REPORT_ID_CONSUMER, data);
 #endif
 }
 
diff --git a/tmk_core/protocol/lufa/lufa.h b/tmk_core/protocol/lufa/lufa.h
index 652e4e79b7..1b88060f14 100644
--- a/tmk_core/protocol/lufa/lufa.h
+++ b/tmk_core/protocol/lufa/lufa.h
@@ -58,12 +58,6 @@ extern host_driver_t lufa_driver;
 }
 #endif
 
-/* extra report structure */
-typedef struct {
-    uint8_t  report_id;
-    uint16_t usage;
-} __attribute__((packed)) report_extra_t;
-
 #ifdef API_ENABLE
 #    include "api.h"
 #endif
diff --git a/tmk_core/protocol/vusb/vusb.c b/tmk_core/protocol/vusb/vusb.c
index 72445e00bb..1a2acc11b7 100644
--- a/tmk_core/protocol/vusb/vusb.c
+++ b/tmk_core/protocol/vusb/vusb.c
@@ -113,31 +113,25 @@ static void send_mouse(report_mouse_t *report) {
     }
 }
 
-typedef struct {
-    uint8_t  report_id;
-    uint16_t usage;
-} __attribute__((packed)) report_extra_t;
-
-static void send_system(uint16_t data) {
+static void send_extra(uint8_t report_id, uint16_t data) {
+    static uint8_t last_id    = 0;
     static uint16_t last_data = 0;
-    if (data == last_data) return;
+    if ((report_id == last_id) && (data == last_data)) return;
+    last_id = report_id;
     last_data = data;
 
-    report_extra_t report = {.report_id = REPORT_ID_SYSTEM, .usage = data};
+    report_extra_t report = {.report_id = report_id, .usage = data};
     if (usbInterruptIsReady3()) {
         usbSetInterrupt3((void *)&report, sizeof(report));
     }
 }
 
-static void send_consumer(uint16_t data) {
-    static uint16_t last_data = 0;
-    if (data == last_data) return;
-    last_data = data;
+static void send_system(uint16_t data) {
+    send_extra(REPORT_ID_SYSTEM, data);
+}
 
-    report_extra_t report = {.report_id = REPORT_ID_CONSUMER, .usage = data};
-    if (usbInterruptIsReady3()) {
-        usbSetInterrupt3((void *)&report, sizeof(report));
-    }
+static void send_consumer(uint16_t data) {
+    send_extra(REPORT_ID_CONSUMER, data);
 }
 
 /*------------------------------------------------------------------*