1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright 2012-15 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#include "dm_services.h"
#include "include/gpio_interface.h"
#include "include/gpio_types.h"
#include "hw_gpio.h"
#include "hw_hpd.h"
#include "reg_helper.h"
#include "hpd_regs.h"
#undef FN
#define FN(reg_name, field_name) \
hpd->shifts->field_name, hpd->masks->field_name
#define CTX \
hpd->base.base.ctx
#define REG(reg)\
(hpd->regs->reg)
struct gpio;
static void dal_hw_hpd_destruct(
struct hw_hpd *pin)
{
dal_hw_gpio_destruct(&pin->base);
}
static void dal_hw_hpd_destroy(
struct hw_gpio_pin **ptr)
{
struct hw_hpd *hpd = HW_HPD_FROM_BASE(*ptr);
dal_hw_hpd_destruct(hpd);
kfree(hpd);
*ptr = NULL;
}
static enum gpio_result get_value(
const struct hw_gpio_pin *ptr,
uint32_t *value)
{
struct hw_hpd *hpd = HW_HPD_FROM_BASE(ptr);
uint32_t hpd_delayed = 0;
/* in Interrupt mode we ask for SENSE bit */
if (ptr->mode == GPIO_MODE_INTERRUPT) {
REG_GET(int_status,
DC_HPD_SENSE_DELAYED, &hpd_delayed);
*value = hpd_delayed;
return GPIO_RESULT_OK;
}
/* in any other modes, operate as normal GPIO */
return dal_hw_gpio_get_value(ptr, value);
}
static enum gpio_result set_config(
struct hw_gpio_pin *ptr,
const struct gpio_config_data *config_data)
{
struct hw_hpd *hpd = HW_HPD_FROM_BASE(ptr);
if (!config_data)
return GPIO_RESULT_INVALID_DATA;
REG_UPDATE_2(toggle_filt_cntl,
DC_HPD_CONNECT_INT_DELAY, config_data->config.hpd.delay_on_connect / 10,
DC_HPD_DISCONNECT_INT_DELAY, config_data->config.hpd.delay_on_disconnect / 10);
return GPIO_RESULT_OK;
}
static const struct hw_gpio_pin_funcs funcs = {
.destroy = dal_hw_hpd_destroy,
.open = dal_hw_gpio_open,
.get_value = get_value,
.set_value = dal_hw_gpio_set_value,
.set_config = set_config,
.change_mode = dal_hw_gpio_change_mode,
.close = dal_hw_gpio_close,
};
static void dal_hw_hpd_construct(
struct hw_hpd *pin,
enum gpio_id id,
uint32_t en,
struct dc_context *ctx)
{
dal_hw_gpio_construct(&pin->base, id, en, ctx);
pin->base.base.funcs = &funcs;
}
void dal_hw_hpd_init(
struct hw_hpd **hw_hpd,
struct dc_context *ctx,
enum gpio_id id,
uint32_t en)
{
if (en > GPIO_DDC_LINE_MAX) {
ASSERT_CRITICAL(false);
*hw_hpd = NULL;
}
*hw_hpd = kzalloc(sizeof(struct hw_hpd), GFP_KERNEL);
if (!*hw_hpd) {
ASSERT_CRITICAL(false);
return;
}
dal_hw_hpd_construct(*hw_hpd, id, en, ctx);
}
struct hw_gpio_pin *dal_hw_hpd_get_pin(struct gpio *gpio)
{
struct hw_hpd *hw_hpd = dal_gpio_get_hpd(gpio);
return &hw_hpd->base.base;
}
|
