1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Support for Intel Camera Imaging ISP subsystem.
4 * Copyright (c) 2010 - 2015, Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13 * more details.
14 */
15
16#include "sh_css_sp.h"
17
18#include "dma.h"	/* N_DMA_CHANNEL_ID */
19
20#include <type_support.h>
21#include "ia_css_binary.h"
22#include "sh_css_hrt.h"
23#include "sh_css_defs.h"
24#include "sh_css_internal.h"
25#include "ia_css_debug.h"
26#include "ia_css_debug_internal.h"
27#include "sh_css_legacy.h"
28
29#include "gdc_device.h"				/* HRT_GDC_N */
30
31/*#include "sp.h"*/	/* host2sp_enqueue_frame_data() */
32
33#include "assert_support.h"
34
35#include "ia_css_queue.h"	/* host_sp_enqueue_XXX */
36#include "ia_css_event.h"	/* ia_css_event_encode */
37/*
38 * @brief Encode the information into the software-event.
39 * Refer to "sw_event_public.h" for details.
40 */
41bool ia_css_event_encode(
42    u8	*in,
43    u8	nr,
44    uint32_t	*out)
45{
46	bool ret;
47	u32 nr_of_bits;
48	u32 i;
49
50	assert(in);
51	assert(out);
52	OP___assert(nr > 0 && nr <= MAX_NR_OF_PAYLOADS_PER_SW_EVENT);
53
54	/* initialize the output */
55	*out = 0;
56
57	/* get the number of bits per information */
58	nr_of_bits = sizeof(uint32_t) * 8 / nr;
59
60	/* compress the all inputs into a signle output */
61	for (i = 0; i < nr; i++) {
62		*out <<= nr_of_bits;
63		*out |= in[i];
64	}
65
66	/* get the return value */
67	ret = (nr > 0 && nr <= MAX_NR_OF_PAYLOADS_PER_SW_EVENT);
68
69	return ret;
70}
71
72void ia_css_event_decode(
73    u32 event,
74    uint8_t *payload)
75{
76	assert(payload[1] == 0);
77	assert(payload[2] == 0);
78	assert(payload[3] == 0);
79
80	ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
81			    "ia_css_event_decode() enter:\n");
82
83	/* First decode according to the common case
84	 * In case of a PORT_EOF event we overwrite with
85	 * the specific values
86	 * This is somewhat ugly but probably somewhat efficient
87	 * (and it avoids some code duplication)
88	 */
89	payload[0] = event & 0xff;  /*event_code */
90	payload[1] = (event >> 8) & 0xff;
91	payload[2] = (event >> 16) & 0xff;
92	payload[3] = 0;
93
94	switch (payload[0]) {
95	case SH_CSS_SP_EVENT_PORT_EOF:
96		payload[2] = 0;
97		payload[3] = (event >> 24) & 0xff;
98		break;
99
100	case SH_CSS_SP_EVENT_ACC_STAGE_COMPLETE:
101	case SH_CSS_SP_EVENT_TIMER:
102	case SH_CSS_SP_EVENT_FRAME_TAGGED:
103	case SH_CSS_SP_EVENT_FW_WARNING:
104	case SH_CSS_SP_EVENT_FW_ASSERT:
105		payload[3] = (event >> 24) & 0xff;
106		break;
107	default:
108		break;
109	}
110}
111