rt2x00: fix led naming
[linux-2.6] / drivers / net / wireless / rt2x00 / rt2x00firmware.c
1 /*
2         Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
3         <http://rt2x00.serialmonkey.com>
4
5         This program is free software; you can redistribute it and/or modify
6         it under the terms of the GNU General Public License as published by
7         the Free Software Foundation; either version 2 of the License, or
8         (at your option) any later version.
9
10         This program is distributed in the hope that it will be useful,
11         but WITHOUT ANY WARRANTY; without even the implied warranty of
12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13         GNU General Public License for more details.
14
15         You should have received a copy of the GNU General Public License
16         along with this program; if not, write to the
17         Free Software Foundation, Inc.,
18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  */
20
21 /*
22         Module: rt2x00lib
23         Abstract: rt2x00 firmware loading routines.
24  */
25
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28
29 #include "rt2x00.h"
30 #include "rt2x00lib.h"
31
32 static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
33 {
34         struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
35         const struct firmware *fw;
36         char *fw_name;
37         int retval;
38
39         /*
40          * Read correct firmware from harddisk.
41          */
42         fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev);
43         if (!fw_name) {
44                 ERROR(rt2x00dev,
45                       "Invalid firmware filename.\n"
46                       "Please file bug report to %s.\n", DRV_PROJECT);
47                 return -EINVAL;
48         }
49
50         INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name);
51
52         retval = request_firmware(&fw, fw_name, device);
53         if (retval) {
54                 ERROR(rt2x00dev, "Failed to request Firmware.\n");
55                 return retval;
56         }
57
58         if (!fw || !fw->size || !fw->data) {
59                 ERROR(rt2x00dev, "Failed to read Firmware.\n");
60                 return -ENOENT;
61         }
62
63         INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n",
64              fw->data[fw->size - 4], fw->data[fw->size - 3]);
65
66         retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size);
67         switch (retval) {
68         case FW_OK:
69                 break;
70         case FW_BAD_CRC:
71                 ERROR(rt2x00dev, "Firmware checksum error.\n");
72                 goto exit;
73         case FW_BAD_LENGTH:
74                 ERROR(rt2x00dev,
75                       "Invalid firmware file length (len=%zu)\n", fw->size);
76                 goto exit;
77         case FW_BAD_VERSION:
78                 ERROR(rt2x00dev,
79                       "Current firmware does not support detected chipset.\n");
80                 goto exit;
81         };
82
83         rt2x00dev->fw = fw;
84
85         return 0;
86
87 exit:
88         release_firmware(fw);
89
90         return -ENOENT;
91 }
92
93 int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
94 {
95         int retval;
96
97         if (!test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags))
98                 return 0;
99
100         if (!rt2x00dev->fw) {
101                 retval = rt2x00lib_request_firmware(rt2x00dev);
102                 if (retval)
103                         return retval;
104         }
105
106         /*
107          * Send firmware to the device.
108          */
109         retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
110                                                     rt2x00dev->fw->data,
111                                                     rt2x00dev->fw->size);
112
113         /*
114          * When the firmware is uploaded to the hardware the LED
115          * association status might have been triggered, for correct
116          * LED handling it should now be reset.
117          */
118         rt2x00leds_led_assoc(rt2x00dev, false);
119
120         return retval;
121 }
122
123 void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
124 {
125         release_firmware(rt2x00dev->fw);
126         rt2x00dev->fw = NULL;
127 }