1 /*
2  * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3  * Copyright (c) 2015 Intel Corporation.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */
24 
25 #include <stdlib.h>
26 #include <string.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <fcntl.h>
30 
31 #include "common.h"
32 #include "x86/intel_nuc5.h"
33 
34 #define PLATFORM_NAME "Intel NUC5"
35 #define SYSFS_CLASS_GPIO "/sys/class/gpio"
36 #define I2CNAME "designware"
37 
38 mraa_board_t*
mraa_intel_nuc5()39 mraa_intel_nuc5()
40 {
41     mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
42     if (b == NULL) {
43         return NULL;
44     }
45 
46     b->platform_name = PLATFORM_NAME;
47     b->phy_pin_count = MRAA_INTEL_NUC5_PINCOUNT;
48 
49     b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));
50     if (b->adv_func == NULL) {
51         goto error;
52     }
53 
54     b->pins = (mraa_pininfo_t*) calloc(MRAA_INTEL_NUC5_PINCOUNT,sizeof(mraa_pininfo_t));
55     if (b->pins == NULL) {
56         free(b->adv_func);
57         goto error;
58     }
59 
60     strncpy(b->pins[0].name, "1.8v", 8);
61     b->pins[0].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
62 
63     strncpy(b->pins[1].name, "GND", 8);
64     b->pins[1].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
65     strncpy(b->pins[2].name, "HDMIcec", 8);
66     b->pins[2].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
67     strncpy(b->pins[3].name, "DMICclk", 8);
68     b->pins[3].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
69     strncpy(b->pins[4].name, "3.3v", 8);
70     b->pins[4].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
71     strncpy(b->pins[5].name, "DMICda", 8);
72     b->pins[5].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
73     strncpy(b->pins[6].name, "Key", 8);
74     b->pins[6].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
75     strncpy(b->pins[7].name, "SMB-A", 8);
76     b->pins[7].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
77     strncpy(b->pins[8].name, "5v", 8);
78     b->pins[8].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
79     strncpy(b->pins[9].name, "SCI", 8);
80     b->pins[9].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
81 
82     strncpy(b->pins[10].name, "PWM0", 8);
83     b->pins[10].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
84     b->pins[10].pwm.pinmap = 0;
85     b->pins[10].pwm.parent_id = 0;
86     b->pins[10].pwm.mux_total = 0;
87 
88     strncpy(b->pins[11].name, "PWM1", 8);
89     b->pins[11].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
90     b->pins[11].pwm.pinmap = 0;
91     b->pins[11].pwm.parent_id = 1;
92     b->pins[11].pwm.mux_total = 0;
93 
94     strncpy(b->pins[12].name, "I2C0SCL", 8);
95     b->pins[12].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 1, 0, 0 };
96     b->pins[12].i2c.pinmap = 1;
97     b->pins[12].i2c.mux_total = 0;
98 
99     strncpy(b->pins[13].name, "I2C0SDA", 8);
100     b->pins[13].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 1, 0, 0 };
101     b->pins[13].i2c.pinmap = 1;
102     b->pins[13].i2c.mux_total = 0;
103 
104     strncpy(b->pins[14].name, "I2C1SCL", 8);
105     b->pins[14].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 1, 0, 0 };
106     b->pins[14].i2c.pinmap = 1;
107     b->pins[14].i2c.mux_total = 0;
108 
109     strncpy(b->pins[15].name, "I2C1SDA", 8);
110     b->pins[15].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 1, 0, 0 };
111     b->pins[15].i2c.pinmap = 1;
112     b->pins[15].i2c.mux_total = 0;
113 
114     strncpy(b->pins[16].name, "SMB_CLK", 8);
115     b->pins[16].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
116     strncpy(b->pins[17].name, "SMB_SDA", 8);
117     b->pins[17].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
118 
119     b->i2c_bus_count = 0;
120     int i2c_num = -1;
121     int i;
122     for (i = 0; i < 2; i++) {
123         i2c_num = mraa_find_i2c_bus(I2CNAME, i2c_num + 1);
124         if (i2c_num == -1) {
125             break;
126         }
127         b->i2c_bus_count++;
128         b->i2c_bus[i].bus_id = i2c_num;
129         b->i2c_bus[i].sda = 12 + i;
130         b->i2c_bus[i].scl = 13 + i;
131     }
132 
133     if (b->i2c_bus_count > 0) {
134         b->def_i2c_bus = b->i2c_bus[0].bus_id;
135     }
136 
137     return b;
138 error:
139     syslog(LOG_CRIT, "nuc5: Platform failed to initialise");
140     free(b);
141     return NULL;
142 }
143