2 * Copyright 2012-15 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
26 #include "dm_services.h"
28 #include "include/gpio_types.h"
32 #include "reg_helper.h"
36 #define FN(reg_name, field_name) \
37 hpd->shifts->field_name, hpd->masks->field_name
44 static bool dal_hw_hpd_construct(
48 struct dc_context
*ctx
)
50 if (!dal_hw_gpio_construct(&pin
->base
, id
, en
, ctx
))
55 static void dal_hw_hpd_destruct(
58 dal_hw_gpio_destruct(&pin
->base
);
65 dal_hw_hpd_destruct(hpd
);
69 struct hw_gpio_pin
**ptr
)
71 struct hw_hpd
*hpd
= HW_HPD_FROM_BASE(*ptr
);
80 static enum gpio_result
get_value(
81 const struct hw_gpio_pin
*ptr
,
84 struct hw_hpd
*hpd
= HW_HPD_FROM_BASE(ptr
);
85 uint32_t hpd_delayed
= 0;
87 /* in Interrupt mode we ask for SENSE bit */
89 if (ptr
->mode
== GPIO_MODE_INTERRUPT
) {
92 DC_HPD_SENSE_DELAYED
, &hpd_delayed
);
95 return GPIO_RESULT_OK
;
98 /* in any other modes, operate as normal GPIO */
100 return dal_hw_gpio_get_value(ptr
, value
);
103 static enum gpio_result
set_config(
104 struct hw_gpio_pin
*ptr
,
105 const struct gpio_config_data
*config_data
)
107 struct hw_hpd
*hpd
= HW_HPD_FROM_BASE(ptr
);
110 return GPIO_RESULT_INVALID_DATA
;
112 REG_UPDATE_2(toggle_filt_cntl
,
113 DC_HPD_CONNECT_INT_DELAY
, config_data
->config
.hpd
.delay_on_connect
/ 10,
114 DC_HPD_DISCONNECT_INT_DELAY
, config_data
->config
.hpd
.delay_on_disconnect
/ 10);
116 return GPIO_RESULT_OK
;
119 static const struct hw_gpio_pin_funcs funcs
= {
121 .open
= dal_hw_gpio_open
,
122 .get_value
= get_value
,
123 .set_value
= dal_hw_gpio_set_value
,
124 .set_config
= set_config
,
125 .change_mode
= dal_hw_gpio_change_mode
,
126 .close
= dal_hw_gpio_close
,
129 static bool construct(
133 struct dc_context
*ctx
)
135 if (id
!= GPIO_ID_HPD
) {
136 ASSERT_CRITICAL(false);
140 if ((en
< GPIO_HPD_MIN
) || (en
> GPIO_HPD_MAX
)) {
141 ASSERT_CRITICAL(false);
145 if (!dal_hw_hpd_construct(hpd
, id
, en
, ctx
)) {
146 ASSERT_CRITICAL(false);
150 hpd
->base
.base
.funcs
= &funcs
;
155 struct hw_gpio_pin
*dal_hw_hpd_create(
156 struct dc_context
*ctx
,
160 struct hw_hpd
*hpd
= dm_alloc(sizeof(struct hw_hpd
));
163 ASSERT_CRITICAL(false);
167 if (construct(hpd
, id
, en
, ctx
))
168 return &hpd
->base
.base
;
170 ASSERT_CRITICAL(false);