78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ultra_ipi.h -- Mediatek scp spk platform driver
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*
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* Copyright (c) 2018 MediaTek Inc.
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* Author: Ning Li <ning.li@mediatek.com>
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*/
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#ifndef __ULTRA_HW_H__
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#define __ULTRA_HW_H__
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#include <linux/types.h>
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/* if IPI expand, need to modify maximum data length(unit: int) */
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#define ULTRA_IPI_HEADER_LENGTH 2 /* 2 * 4byte = 8 */
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#define ULTRA_IPI_SEND_BUFFER_LENGTH 13 /* 13 * 4byte = 52 */
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#define ULTRA_IPI_RECEIVE_LENGTH 2 /* 2 * 4byte = 8 */
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#define ULTRA_IPI_ACK_LENGTH 2 /* 2 * 4byte = 8 */
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#define ULTRA_IPI_WAIT_ACK_TIMEOUT 10
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#define ULTRA_IPI_RESEND_TIMES 2
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#define ULTRA_IPI_SEND_CNT_TIMEOUT 500 /* 500ms */
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#define ULTRA_WAITCHECK_INTERVAL_MS 1
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enum {
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ULTRA_IPI_BYPASS_ACK = 0,
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ULTRA_IPI_NEED_ACK,
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ULTRA_IPI_ACK_BACK
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};
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/* AP -> SCP ipi structure */
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struct ultra_ipi_send_info {
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unsigned char msg_id;
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unsigned char msg_need_ack;
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unsigned char param1;
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unsigned char param2;
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unsigned int msg_length;
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int payload[ULTRA_IPI_SEND_BUFFER_LENGTH];
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};
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/* SCP -> AP ipi structure */
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struct ultra_ipi_receive_info {
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unsigned char msg_id;
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unsigned char msg_need_ack;
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unsigned char param1;
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unsigned char param2;
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unsigned int msg_length;
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unsigned int msg_data[ULTRA_IPI_RECEIVE_LENGTH];
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};
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/* SCP -> AP ipi ack structure */
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struct ultra_ipi_ack_info {
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unsigned char msg_id;
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unsigned char msg_need_ack;
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unsigned char param1;
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unsigned char param2;
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unsigned int msg_data;
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};
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/* function */
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unsigned int ultra_check_scp_status(void);
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void ultra_ipi_register(void (*ipi_rx_call)(unsigned int, void *),
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bool (*ipi_tx_ack_call)(unsigned int, unsigned int));
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bool ultra_ipi_send_msg(unsigned int msg_id,
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bool polling_mode,
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unsigned int payload_len,
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int *payload,
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unsigned int need_ack,
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unsigned int param);
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bool ultra_GetScpRecoverStatus(void);
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void ultra_SetScpRecoverStatus(bool recovering);
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#endif /*__ULTRA_HW_H__ */
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