1 /**
2  * Copyright © 2016 Google Inc.
3  * Copyright © 2016 IBM Corporation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #ifndef __GPIO_CONFIGS_H__
19 #define __GPIO_CONFIGS_H__
20 
21 #include <stddef.h>
22 #include <glib.h>
23 #include "gpio.h"
24 
25 typedef struct PowerGpio {
26 	/* Optional active high pin enabling writes to latched power_up pins. */
27 	GPIO latch_out; /* NULL name if not used. */
28 	/* Active high pin that is asserted following successful host power up. */
29 	GPIO power_good_in;
30 	/* Selectable polarity pins enabling host power rails. */
31 	size_t num_power_up_outs;
32 	GPIO *power_up_outs;
33 	/* TRUE for active high */
34 	gboolean *power_up_pols;
35 	/* Selectable polarity pins holding system complexes in reset. */
36 	size_t num_reset_outs;
37 	GPIO *reset_outs;
38 	/* TRUE for active high */
39 	gboolean *reset_pols;
40 	size_t num_pci_reset_outs;
41 	GPIO *pci_reset_outs;
42 	/* TRUE for active high */
43 	gboolean *pci_reset_pols;
44 	gboolean *pci_reset_holds;
45 } PowerGpio;
46 
47 typedef struct HostctlGpio {
48 	GPIO fsi_data;
49 	GPIO fsi_clk;
50 	GPIO fsi_enable;
51 	GPIO cronus_sel;
52 	size_t num_optionals;
53 	GPIO* optionals;
54 	gboolean* optional_pols;
55 } HostctlGpio;
56 
57 typedef struct GpioConfigs {
58 	PowerGpio power_gpio;
59 	HostctlGpio hostctl_gpio;
60 } GpioConfigs;
61 
62 /* Read system configuration for GPIOs. */
63 gboolean read_gpios(GDBusConnection *connection, GpioConfigs *gpios);
64 /* Frees internal buffers. Does not free parameter. Does not close GPIOs. */
65 void free_gpios(GpioConfigs *gpios);
66 
67 #endif
68