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 "input_system.h"
17 
18 #include "ia_css_isys.h"
19 #include "platform_support.h"
20 
21 #ifdef ISP2401
22 #include "isys_dma_public.h"	/* isys2401_dma_set_max_burst_size() */
23 #include "isys_irq.h"
24 #endif
25 
26 #if !defined(ISP2401)
ia_css_isys_init(void)27 input_system_err_t ia_css_isys_init(void)
28 {
29 	backend_channel_cfg_t backend_ch0;
30 	backend_channel_cfg_t backend_ch1;
31 	target_cfg2400_t targetB;
32 	target_cfg2400_t targetC;
33 	u32 acq_mem_region_size = 24;
34 	u32 acq_nof_mem_regions = 2;
35 	input_system_err_t error = INPUT_SYSTEM_ERR_NO_ERROR;
36 
37 	memset(&backend_ch0, 0, sizeof(backend_channel_cfg_t));
38 	memset(&backend_ch1, 0, sizeof(backend_channel_cfg_t));
39 	memset(&targetB, 0, sizeof(targetB));
40 	memset(&targetC, 0, sizeof(targetC));
41 
42 	error = input_system_configuration_reset();
43 	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
44 		return error;
45 
46 	error = input_system_csi_xmem_channel_cfg(
47 		    0,			/*ch_id                 */
48 		    INPUT_SYSTEM_PORT_A,	/*port                  */
49 		    backend_ch0,		/*backend_ch            */
50 		    32,			/*mem_region_size       */
51 		    6,			/*nof_mem_regions       */
52 		    acq_mem_region_size,	/*acq_mem_region_size   */
53 		    acq_nof_mem_regions,	/*acq_nof_mem_regions   */
54 		    targetB,		/*target                */
55 		    3);			/*nof_xmem_buffers      */
56 	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
57 		return error;
58 
59 	error = input_system_csi_xmem_channel_cfg(
60 		    1,			/*ch_id                 */
61 		    INPUT_SYSTEM_PORT_B,	/*port                  */
62 		    backend_ch0,		/*backend_ch            */
63 		    16,			/*mem_region_size       */
64 		    3,			/*nof_mem_regions       */
65 		    acq_mem_region_size,	/*acq_mem_region_size   */
66 		    acq_nof_mem_regions,	/*acq_nof_mem_regions   */
67 		    targetB,		/*target                */
68 		    3);			/*nof_xmem_buffers      */
69 	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
70 		return error;
71 
72 	error = input_system_csi_xmem_channel_cfg(
73 		    2,			/*ch_id                 */
74 		    INPUT_SYSTEM_PORT_C,	/*port                  */
75 		    backend_ch1,		/*backend_ch            */
76 		    32,			/*mem_region_size       */
77 		    3,			/*nof_mem_regions       */
78 		    acq_mem_region_size,	/*acq_mem_region_size   */
79 		    acq_nof_mem_regions,	/*acq_nof_mem_regions   */
80 		    targetC,		/*target                */
81 		    2);			/*nof_xmem_buffers      */
82 	if (error != INPUT_SYSTEM_ERR_NO_ERROR)
83 		return error;
84 
85 	error = input_system_configuration_commit();
86 
87 	return error;
88 }
89 #elif defined(ISP2401)
ia_css_isys_init(void)90 input_system_err_t ia_css_isys_init(void)
91 {
92 	ia_css_isys_csi_rx_lut_rmgr_init();
93 	ia_css_isys_ibuf_rmgr_init();
94 	ia_css_isys_dma_channel_rmgr_init();
95 	ia_css_isys_stream2mmio_sid_rmgr_init();
96 
97 	isys2401_dma_set_max_burst_size(ISYS2401_DMA0_ID,
98 					1 /* Non Burst DMA transactions */);
99 
100 	/* Enable 2401 input system IRQ status for driver to retrieve */
101 	isys_irqc_status_enable(ISYS_IRQ0_ID);
102 	isys_irqc_status_enable(ISYS_IRQ1_ID);
103 	isys_irqc_status_enable(ISYS_IRQ2_ID);
104 
105 	return INPUT_SYSTEM_ERR_NO_ERROR;
106 }
107 #endif
108 
109 #if !defined(ISP2401)
ia_css_isys_uninit(void)110 void ia_css_isys_uninit(void)
111 {
112 }
113 #elif defined(ISP2401)
ia_css_isys_uninit(void)114 void ia_css_isys_uninit(void)
115 {
116 	ia_css_isys_csi_rx_lut_rmgr_uninit();
117 	ia_css_isys_ibuf_rmgr_uninit();
118 	ia_css_isys_dma_channel_rmgr_uninit();
119 	ia_css_isys_stream2mmio_sid_rmgr_uninit();
120 }
121 #endif
122 
123