hw/mcu/da1469x: Add VBUS handling
VBUS interrupt that can fire whenever VBUS is connected
or disconnected was used so far only in charger driver.
USB stack also needs to know about such event.
This introduces VBUS handling code that will notify interested
parties about such event.
It would not be the best case if USB and Charger could not
be used separately.
diff --git a/hw/mcu/dialog/da1469x/include/mcu/da1469x_vbus.h b/hw/mcu/dialog/da1469x/include/mcu/da1469x_vbus.h
new file mode 100644
index 0000000..8500831
--- /dev/null
+++ b/hw/mcu/dialog/da1469x/include/mcu/da1469x_vbus.h
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#ifndef __MCU_DA1469X_VBUS_H_
+#define __MCU_DA1469X_VBUS_H_
+
+#include <stdint.h>
+#include <mcu/mcu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void (*vbus_change_handler)(bool present);
+
+void da1469x_vbus_add_handler(vbus_change_handler handler);
+void da1469x_vbus_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MCU_DA1469X_VBUS_H_ */
diff --git a/hw/mcu/dialog/da1469x/src/da1469x_periph.c b/hw/mcu/dialog/da1469x/src/da1469x_periph.c
index 56911ef..f33f357 100644
--- a/hw/mcu/dialog/da1469x/src/da1469x_periph.c
+++ b/hw/mcu/dialog/da1469x/src/da1469x_periph.c
@@ -23,6 +23,7 @@
#include "os/os_cputime.h"
#include "mcu/da1469x_hal.h"
#include "mcu/da1469x_dma.h"
+#include "mcu/da1469x_vbus.h"
#include "bsp/bsp.h"
#if MYNEWT_VAL(UART_0) || MYNEWT_VAL(UART_1) || MYNEWT_VAL(UART_2)
@@ -518,6 +519,7 @@
da1469x_periph_create(void)
{
da1469x_dma_init();
+ da1469x_vbus_init();
da1469x_periph_create_timers();
da1469x_periph_create_adc();
diff --git a/hw/mcu/dialog/da1469x/src/da1469x_vbus.c b/hw/mcu/dialog/da1469x/src/da1469x_vbus.c
new file mode 100644
index 0000000..22fdd7f
--- /dev/null
+++ b/hw/mcu/dialog/da1469x/src/da1469x_vbus.c
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <os/util.h>
+#include <mcu/da1469x_vbus.h>
+
+/*
+ * For now only two clients of VBUS notification are present USB and charger
+ * If more space is needed in the future more entries can be added.
+ */
+static vbus_change_handler vbus_change_handlers[2];
+static uint8_t vbus_change_handler_count;
+
+static void
+da1469x_vbus_isr(void)
+{
+ int i;
+ bool vbus_present = (CRG_TOP->ANA_STATUS_REG & CRG_TOP_ANA_STATUS_REG_VBUS_AVAILABLE_Msk) != 0;
+
+ CRG_TOP->VBUS_IRQ_CLEAR_REG = 1;
+ for (i = 0; i < vbus_change_handler_count; ++i) {
+ vbus_change_handlers[i](vbus_present);
+ }
+}
+
+void
+da1469x_vbus_add_handler(vbus_change_handler handler)
+{
+ int sr;
+ bool vbus_present;
+
+ assert(vbus_change_handler_count < ARRAY_SIZE(vbus_change_handlers));
+
+ OS_ENTER_CRITICAL(sr);
+
+ vbus_change_handlers[vbus_change_handler_count++] = handler;
+ vbus_present = (CRG_TOP->ANA_STATUS_REG & CRG_TOP_ANA_STATUS_REG_VBUS_AVAILABLE_Msk) != 0;
+
+ /* VBUS was already present notify new handler */
+ if (vbus_present) {
+ handler(vbus_present);
+ }
+
+ OS_EXIT_CRITICAL(sr);
+}
+
+void da1469x_vbus_init(void)
+{
+ NVIC_DisableIRQ(VBUS_IRQn);
+ NVIC_SetVector(VBUS_IRQn, (uint32_t)da1469x_vbus_isr);
+ CRG_TOP->VBUS_IRQ_CLEAR_REG = 1;
+ NVIC_ClearPendingIRQ(VBUS_IRQn);
+ /* Both connect and disconnect needs to be handled */
+ CRG_TOP->VBUS_IRQ_MASK_REG = CRG_TOP_VBUS_IRQ_MASK_REG_VBUS_IRQ_EN_FALL_Msk |
+ CRG_TOP_VBUS_IRQ_MASK_REG_VBUS_IRQ_EN_RISE_Msk;
+ NVIC_EnableIRQ(VBUS_IRQn);
+}
