1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (c) 2019 MediaTek Inc.
4  */
5 
6 #ifndef _MTK_SCP_H
7 #define _MTK_SCP_H
8 
9 #include <linux/platform_device.h>
10 
11 typedef void (*scp_ipi_handler_t) (void *data,
12 				   unsigned int len,
13 				   void *priv);
14 struct mtk_scp;
15 
16 /**
17  * enum ipi_id - the id of inter-processor interrupt
18  *
19  * @SCP_IPI_INIT:	 The interrupt from scp is to notfiy kernel
20  *			 SCP initialization completed.
21  *			 IPI_SCP_INIT is sent from SCP when firmware is
22  *			 loaded. AP doesn't need to send IPI_SCP_INIT
23  *			 command to SCP.
24  *			 For other IPI below, AP should send the request
25  *			 to SCP to trigger the interrupt.
26  * @SCP_IPI_MAX:	 The maximum IPI number
27  */
28 
29 enum scp_ipi_id {
30 	SCP_IPI_INIT = 0,
31 	SCP_IPI_VDEC_H264,
32 	SCP_IPI_VDEC_VP8,
33 	SCP_IPI_VDEC_VP9,
34 	SCP_IPI_VENC_H264,
35 	SCP_IPI_VENC_VP8,
36 	SCP_IPI_MDP_INIT,
37 	SCP_IPI_MDP_DEINIT,
38 	SCP_IPI_MDP_FRAME,
39 	SCP_IPI_DIP,
40 	SCP_IPI_ISP_CMD,
41 	SCP_IPI_ISP_FRAME,
42 	SCP_IPI_FD_CMD,
43 	SCP_IPI_CROS_HOST_CMD,
44 	SCP_IPI_VDEC_LAT,
45 	SCP_IPI_VDEC_CORE,
46 	SCP_IPI_NS_SERVICE = 0xFF,
47 	SCP_IPI_MAX = 0x100,
48 };
49 
50 struct mtk_scp *scp_get(struct platform_device *pdev);
51 void scp_put(struct mtk_scp *scp);
52 
53 struct device *scp_get_device(struct mtk_scp *scp);
54 struct rproc *scp_get_rproc(struct mtk_scp *scp);
55 
56 int scp_ipi_register(struct mtk_scp *scp, u32 id, scp_ipi_handler_t handler,
57 		     void *priv);
58 void scp_ipi_unregister(struct mtk_scp *scp, u32 id);
59 
60 int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
61 		 unsigned int wait);
62 
63 unsigned int scp_get_vdec_hw_capa(struct mtk_scp *scp);
64 unsigned int scp_get_venc_hw_capa(struct mtk_scp *scp);
65 
66 void *scp_mapping_dm_addr(struct mtk_scp *scp, u32 mem_addr);
67 
68 #endif /* _MTK_SCP_H */
69