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