DRV2605L Continuous Haptic Feedback Support (#6461)

* provide means to turn on RTP mode and set the amplitude

* new keycode HPT_CONT to turn RTP off/on

* introduce new keycodes HPT_CONI, and HPT_COND for Haptic Continuous Increase and Decrease

* support for continuous mode amplitude increase and decrease

* code cleanup

* update docs to reference new keycodes and functionality

* don't touch the keymaps

* add function prototypes

* add proper guards

* cleanup guards

* remove extra reserved

1 files changed, 67 insertions, 0 deletions

diff --git a/drivers/haptic/haptic.c b/drivers/haptic/haptic.c
index ded6d8a44a..989970beee 100644
--- a/drivers/haptic/haptic.c
+++ b/drivers/haptic/haptic.c
@@ -168,6 +168,15 @@ void haptic_set_mode(uint8_t mode) {
     xprintf("haptic_config.mode = %u\n", haptic_config.mode);
 }
 
+void haptic_set_amplitude(uint8_t amp) {
+  haptic_config.amplitude = amp;
+  eeconfig_update_haptic(haptic_config.raw);
+  xprintf("haptic_config.amplitude = %u\n", haptic_config.amplitude);
+  #ifdef DRV2605L
+  DRV_amplitude(amp);
+  #endif
+}
+
 void haptic_set_buzz(uint8_t buzz) {
     haptic_config.buzz = buzz;
     eeconfig_update_haptic(haptic_config.raw);
@@ -201,6 +210,53 @@ uint8_t haptic_get_dwell(void) {
     return haptic_config.dwell;
 }
 
+void haptic_enable_continuous(void) {
+  haptic_config.cont        = 1;
+  xprintf("haptic_config.cont = %u\n", haptic_config.cont);
+  eeconfig_update_haptic(haptic_config.raw);
+  #ifdef DRV2605L
+  DRV_rtp_init();
+  #endif
+}
+
+void haptic_disable_continuous(void) {
+  haptic_config.cont        = 0;
+  xprintf("haptic_config.cont = %u\n", haptic_config.cont);
+  eeconfig_update_haptic(haptic_config.raw);
+  #ifdef DRV2605L
+  DRV_write(DRV_MODE,0x00); 
+  #endif
+}
+
+void haptic_toggle_continuous(void) {
+#ifdef DRV2605L
+if (haptic_config.cont) {
+  haptic_disable_continuous();
+  } else {
+    haptic_enable_continuous();
+  }
+  eeconfig_update_haptic(haptic_config.raw);
+#endif
+}
+
+
+void haptic_cont_increase(void) {
+  uint8_t amp = haptic_config.amplitude + 10;
+  if (haptic_config.amplitude >= 120) {
+    amp = 120;
+  }
+  haptic_set_amplitude(amp);
+}
+
+void haptic_cont_decrease(void) {
+  uint8_t amp = haptic_config.amplitude - 10;
+  if (haptic_config.amplitude < 20) {
+    amp = 20;
+  }
+  haptic_set_amplitude(amp);
+}
+
+
 void haptic_play(void) {
 #ifdef DRV2605L
     uint8_t play_eff = 0;
@@ -213,6 +269,7 @@ void haptic_play(void) {
 }
 
 bool process_haptic(uint16_t keycode, keyrecord_t *record) {
+
     if (keycode == HPT_ON && record->event.pressed) {
         haptic_enable();
     }
@@ -243,6 +300,16 @@ bool process_haptic(uint16_t keycode, keyrecord_t *record) {
     if (keycode == HPT_DWLD && record->event.pressed) {
         haptic_dwell_decrease();
     }
+    if (keycode == HPT_CONT && record->event.pressed) { 
+        haptic_toggle_continuous(); 
+    }
+    if (keycode == HPT_CONI && record->event.pressed) { 
+        haptic_cont_increase(); 
+    }
+    if (keycode == HPT_COND && record->event.pressed) { 
+        haptic_cont_decrease(); 
+    }
+      
     if (haptic_config.enable) {
         if (record->event.pressed) {
             // keypress