arm-trusted-firmware/plat/arm/css/drivers/mhu/css_mhu_doorbell.c
Paul Beesley 8aabea3358 Correct typographical errors
Corrects typos in core code, documentation files, drivers, Arm
platforms and services.

None of the corrections affect code; changes are limited to comments
and other documentation.

Change-Id: I5c1027b06ef149864f315ccc0ea473e2a16bfd1d
Signed-off-by: Paul Beesley <paul.beesley@arm.com>
2019-01-15 15:16:02 +00:00

39 lines
876 B
C

/*
* Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform_def.h>
#include <arch_helpers.h>
#include "css_mhu_doorbell.h"
#include "../scmi/scmi.h"
void mhu_ring_doorbell(struct scmi_channel_plat_info *plat_info)
{
MHU_RING_DOORBELL(plat_info->db_reg_addr,
plat_info->db_modify_mask,
plat_info->db_preserve_mask);
return;
}
void mhuv2_ring_doorbell(struct scmi_channel_plat_info *plat_info)
{
/* wake receiver */
MHU_V2_ACCESS_REQUEST(MHUV2_BASE_ADDR);
/* wait for receiver to acknowledge its ready */
while (MHU_V2_IS_ACCESS_READY(MHUV2_BASE_ADDR) == 0)
;
MHU_RING_DOORBELL(plat_info->db_reg_addr,
plat_info->db_modify_mask,
plat_info->db_preserve_mask);
/* clear the access request for the receiver */
MHU_V2_CLEAR_REQUEST(MHUV2_BASE_ADDR);
return;
}