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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | /* | |
21 | * Helper functions for the Cypress EZ-USB / FX2 series chips. | |
22 | */ | |
23 | ||
24 | #include <libusb.h> | |
25 | #include <glib.h> | |
26 | #include <glib/gstdio.h> | |
27 | #include <stdio.h> | |
28 | #include <errno.h> | |
29 | #include <string.h> | |
30 | #include "libsigrok.h" | |
31 | #include "libsigrok-internal.h" | |
32 | ||
33 | SR_PRIV int ezusb_reset(struct libusb_device_handle *hdl, int set_clear) | |
34 | { | |
35 | int ret; | |
36 | unsigned char buf[1]; | |
37 | ||
38 | sr_info("ezusb: setting CPU reset mode %s...", | |
39 | set_clear ? "on" : "off"); | |
40 | buf[0] = set_clear ? 1 : 0; | |
41 | ret = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR, 0xa0, | |
42 | 0xe600, 0x0000, buf, 1, 100); | |
43 | if (ret < 0) | |
44 | sr_err("ezusb: Unable to send control request: %d", ret); | |
45 | ||
46 | return ret; | |
47 | } | |
48 | ||
49 | SR_PRIV int ezusb_install_firmware(libusb_device_handle *hdl, | |
50 | const char *filename) | |
51 | { | |
52 | FILE *fw; | |
53 | int offset, chunksize, ret, result; | |
54 | unsigned char buf[4096]; | |
55 | ||
56 | sr_info("ezusb: Uploading firmware at %s", filename); | |
57 | if ((fw = g_fopen(filename, "rb")) == NULL) { | |
58 | sr_err("ezusb: Unable to open firmware file %s for reading: %s", | |
59 | filename, strerror(errno)); | |
60 | return SR_ERR; | |
61 | } | |
62 | ||
63 | result = SR_OK; | |
64 | offset = 0; | |
65 | while (1) { | |
66 | chunksize = fread(buf, 1, 4096, fw); | |
67 | if (chunksize == 0) | |
68 | break; | |
69 | ret = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
70 | LIBUSB_ENDPOINT_OUT, 0xa0, offset, | |
71 | 0x0000, buf, chunksize, 100); | |
72 | if (ret < 0) { | |
73 | sr_err("ezusb: Unable to send firmware to device: %d", | |
74 | ret); | |
75 | result = SR_ERR; | |
76 | break; | |
77 | } | |
78 | sr_info("ezusb: Uploaded %d bytes", chunksize); | |
79 | offset += chunksize; | |
80 | } | |
81 | fclose(fw); | |
82 | sr_info("ezusb: Firmware upload done"); | |
83 | ||
84 | return result; | |
85 | } | |
86 | ||
87 | SR_PRIV int ezusb_upload_firmware(libusb_device *dev, int configuration, | |
88 | const char *filename) | |
89 | { | |
90 | struct libusb_device_handle *hdl; | |
91 | int ret; | |
92 | ||
93 | sr_info("ezusb: uploading firmware to device on %d.%d", | |
94 | libusb_get_bus_number(dev), libusb_get_device_address(dev)); | |
95 | ||
96 | if ((ret = libusb_open(dev, &hdl)) < 0) { | |
97 | sr_err("ezusb: failed to open device: %d", ret); | |
98 | return SR_ERR; | |
99 | } | |
100 | ||
101 | /* Neither Windows/MinGW nor Darwin/Mac support these libusb-1.0 calls. */ | |
102 | #if !defined(_WIN32) && !defined(__APPLE__) | |
103 | if (libusb_kernel_driver_active(hdl, 0)) { | |
104 | if ((ret = libusb_detach_kernel_driver(hdl, 0)) < 0) { | |
105 | sr_err("ezusb: failed to detach kernel driver: %d", ret); | |
106 | return SR_ERR; | |
107 | } | |
108 | } | |
109 | #endif | |
110 | ||
111 | if ((ret = libusb_set_configuration(hdl, configuration)) < 0) { | |
112 | sr_err("ezusb: Unable to set configuration: %d", ret); | |
113 | return SR_ERR; | |
114 | } | |
115 | ||
116 | if ((ezusb_reset(hdl, 1)) < 0) | |
117 | return SR_ERR; | |
118 | ||
119 | if (ezusb_install_firmware(hdl, filename) < 0) | |
120 | return SR_ERR; | |
121 | ||
122 | if ((ezusb_reset(hdl, 0)) < 0) | |
123 | return SR_ERR; | |
124 | ||
125 | libusb_close(hdl); | |
126 | ||
127 | return SR_OK; | |
128 | } |