blob: c51f3b1d78e5d685f2a9b269c490a65a558c396e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
/*
* Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform_def.h>
#include <arch_helpers.h>
#include <drivers/arm/css/css_mhu_doorbell.h>
#include <drivers/arm/css/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)
{
uintptr_t mhuv2_base = plat_info->db_reg_addr & MHU_V2_FRAME_BASE_MASK;
/* wake receiver */
MHU_V2_ACCESS_REQUEST(mhuv2_base);
/* wait for receiver to acknowledge its ready */
while (MHU_V2_IS_ACCESS_READY(mhuv2_base) == 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);
return;
}
|
