1 /*
2 * Copyright 2012-15 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26 #include "dm_services.h"
27
28 /*
29 * Pre-requisites: headers required by header of this unit
30 */
31 #include "include/i2caux_interface.h"
32 #include "../engine.h"
33 #include "../i2c_engine.h"
34 #include "../i2c_sw_engine.h"
35
36 /*
37 * Header of this unit
38 */
39
40 #include "i2c_sw_engine_dce80.h"
41
42 /*
43 * Post-requisites: headers required by this unit
44 */
45
46 #include "dce/dce_8_0_d.h"
47 #include "dce/dce_8_0_sh_mask.h"
48
49 /*
50 * This unit
51 */
52
53 static const uint32_t ddc_hw_status_addr[] = {
54 mmDC_I2C_DDC1_HW_STATUS,
55 mmDC_I2C_DDC2_HW_STATUS,
56 mmDC_I2C_DDC3_HW_STATUS,
57 mmDC_I2C_DDC4_HW_STATUS,
58 mmDC_I2C_DDC5_HW_STATUS,
59 mmDC_I2C_DDC6_HW_STATUS,
60 mmDC_I2C_DDCVGA_HW_STATUS
61 };
62
63 /*
64 * @brief
65 * Cast 'struct i2c_sw_engine *'
66 * to 'struct i2c_sw_engine_dce80 *'
67 */
68 #define FROM_I2C_SW_ENGINE(ptr) \
69 container_of((ptr), struct i2c_sw_engine_dce80, base)
70
71 /*
72 * @brief
73 * Cast 'struct i2c_engine *'
74 * to 'struct i2c_sw_engine_dce80 *'
75 */
76 #define FROM_I2C_ENGINE(ptr) \
77 FROM_I2C_SW_ENGINE(container_of((ptr), struct i2c_sw_engine, base))
78
79 /*
80 * @brief
81 * Cast 'struct engine *'
82 * to 'struct i2c_sw_engine_dce80 *'
83 */
84 #define FROM_ENGINE(ptr) \
85 FROM_I2C_ENGINE(container_of((ptr), struct i2c_engine, base))
86
release_engine(struct engine * engine)87 static void release_engine(
88 struct engine *engine)
89 {
90
91 }
92
destruct(struct i2c_sw_engine_dce80 * engine)93 static void destruct(
94 struct i2c_sw_engine_dce80 *engine)
95 {
96 dal_i2c_sw_engine_destruct(&engine->base);
97 }
98
destroy(struct i2c_engine ** engine)99 static void destroy(
100 struct i2c_engine **engine)
101 {
102 struct i2c_sw_engine_dce80 *sw_engine = FROM_I2C_ENGINE(*engine);
103
104 destruct(sw_engine);
105
106 kfree(sw_engine);
107
108 *engine = NULL;
109 }
110
acquire_engine(struct i2c_engine * engine,struct ddc * ddc_handle)111 static bool acquire_engine(
112 struct i2c_engine *engine,
113 struct ddc *ddc_handle)
114 {
115 return dal_i2caux_i2c_sw_engine_acquire_engine(engine, ddc_handle);
116 }
117
118 static const struct i2c_engine_funcs i2c_engine_funcs = {
119 .acquire_engine = acquire_engine,
120 .destroy = destroy,
121 .get_speed = dal_i2c_sw_engine_get_speed,
122 .set_speed = dal_i2c_sw_engine_set_speed,
123 .setup_engine = dal_i2c_engine_setup_i2c_engine,
124 .submit_channel_request = dal_i2c_sw_engine_submit_channel_request,
125 .process_channel_reply = dal_i2c_engine_process_channel_reply,
126 .get_channel_status = dal_i2c_sw_engine_get_channel_status,
127 };
128
129 static const struct engine_funcs engine_funcs = {
130 .release_engine = release_engine,
131 .get_engine_type = dal_i2c_sw_engine_get_engine_type,
132 .acquire = dal_i2c_engine_acquire,
133 .submit_request = dal_i2c_sw_engine_submit_request,
134 };
135
construct(struct i2c_sw_engine_dce80 * engine,const struct i2c_sw_engine_dce80_create_arg * arg)136 static void construct(
137 struct i2c_sw_engine_dce80 *engine,
138 const struct i2c_sw_engine_dce80_create_arg *arg)
139 {
140 struct i2c_sw_engine_create_arg arg_base;
141
142 arg_base.ctx = arg->ctx;
143 arg_base.default_speed = arg->default_speed;
144
145 dal_i2c_sw_engine_construct(&engine->base, &arg_base);
146
147 engine->base.base.base.funcs = &engine_funcs;
148 engine->base.base.funcs = &i2c_engine_funcs;
149 engine->base.default_speed = arg->default_speed;
150 engine->engine_id = arg->engine_id;
151 }
152
dal_i2c_sw_engine_dce80_create(const struct i2c_sw_engine_dce80_create_arg * arg)153 struct i2c_engine *dal_i2c_sw_engine_dce80_create(
154 const struct i2c_sw_engine_dce80_create_arg *arg)
155 {
156 struct i2c_sw_engine_dce80 *engine;
157
158 if (!arg) {
159 BREAK_TO_DEBUGGER();
160 return NULL;
161 }
162
163 engine = kzalloc(sizeof(struct i2c_sw_engine_dce80), GFP_KERNEL);
164
165 if (!engine) {
166 BREAK_TO_DEBUGGER();
167 return NULL;
168 }
169
170 construct(engine, arg);
171 return &engine->base.base;
172 }
173
174
