drivers/mhu: derive doorbell base address
In order to allow the MHUv2 driver to be usable with multiple MHUv2
controllers, use the base address of the controller from the platform
information instead of the MHUV2_BASE_ADDR macro.
Change-Id: I4dbab87b929fb0568935e6c8b339ce67937f8cd1
Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>
diff --git a/drivers/arm/css/mhu/css_mhu_doorbell.c b/drivers/arm/css/mhu/css_mhu_doorbell.c
index 8858742..c51f3b1 100644
--- a/drivers/arm/css/mhu/css_mhu_doorbell.c
+++ b/drivers/arm/css/mhu/css_mhu_doorbell.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -20,11 +20,13 @@
void mhuv2_ring_doorbell(struct scmi_channel_plat_info *plat_info)
{
+ uintptr_t mhuv2_base = plat_info->db_reg_addr & MHU_V2_FRAME_BASE_MASK;
+
/* wake receiver */
- MHU_V2_ACCESS_REQUEST(MHUV2_BASE_ADDR);
+ MHU_V2_ACCESS_REQUEST(mhuv2_base);
/* wait for receiver to acknowledge its ready */
- while (MHU_V2_IS_ACCESS_READY(MHUV2_BASE_ADDR) == 0)
+ while (MHU_V2_IS_ACCESS_READY(mhuv2_base) == 0)
;
MHU_RING_DOORBELL(plat_info->db_reg_addr,
@@ -32,7 +34,7 @@
plat_info->db_preserve_mask);
/* clear the access request for the receiver */
- MHU_V2_CLEAR_REQUEST(MHUV2_BASE_ADDR);
+ MHU_V2_CLEAR_REQUEST(mhuv2_base);
return;
}