rt2x00: Split rt2x00dev->flags
[linux-2.6.git] / drivers / net / wireless / rt2x00 / rt2x00firmware.c
1 /*
2         Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
3         Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
4         <http://rt2x00.serialmonkey.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 2 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, write to the
18         Free Software Foundation, Inc.,
19         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20  */
21
22 /*
23         Module: rt2x00lib
24         Abstract: rt2x00 firmware loading routines.
25  */
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29
30 #include "rt2x00.h"
31 #include "rt2x00lib.h"
32
33 static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
34 {
35         struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
36         const struct firmware *fw;
37         char *fw_name;
38         int retval;
39
40         /*
41          * Read correct firmware from harddisk.
42          */
43         fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev);
44         if (!fw_name) {
45                 ERROR(rt2x00dev,
46                       "Invalid firmware filename.\n"
47                       "Please file bug report to %s.\n", DRV_PROJECT);
48                 return -EINVAL;
49         }
50
51         INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name);
52
53         retval = request_firmware(&fw, fw_name, device);
54         if (retval) {
55                 ERROR(rt2x00dev, "Failed to request Firmware.\n");
56                 return retval;
57         }
58
59         if (!fw || !fw->size || !fw->data) {
60                 ERROR(rt2x00dev, "Failed to read Firmware.\n");
61                 release_firmware(fw);
62                 return -ENOENT;
63         }
64
65         INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n",
66              fw->data[fw->size - 4], fw->data[fw->size - 3]);
67         snprintf(rt2x00dev->hw->wiphy->fw_version,
68                         sizeof(rt2x00dev->hw->wiphy->fw_version), "%d.%d",
69                         fw->data[fw->size - 4], fw->data[fw->size - 3]);
70
71         retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size);
72         switch (retval) {
73         case FW_OK:
74                 break;
75         case FW_BAD_CRC:
76                 ERROR(rt2x00dev, "Firmware checksum error.\n");
77                 goto exit;
78         case FW_BAD_LENGTH:
79                 ERROR(rt2x00dev,
80                       "Invalid firmware file length (len=%zu)\n", fw->size);
81                 goto exit;
82         case FW_BAD_VERSION:
83                 ERROR(rt2x00dev,
84                       "Current firmware does not support detected chipset.\n");
85                 goto exit;
86         }
87
88         rt2x00dev->fw = fw;
89
90         return 0;
91
92 exit:
93         release_firmware(fw);
94
95         return -ENOENT;
96 }
97
98 int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
99 {
100         int retval;
101
102         if (!test_bit(REQUIRE_FIRMWARE, &rt2x00dev->cap_flags))
103                 return 0;
104
105         if (!rt2x00dev->fw) {
106                 retval = rt2x00lib_request_firmware(rt2x00dev);
107                 if (retval)
108                         return retval;
109         }
110
111         /*
112          * Send firmware to the device.
113          */
114         retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
115                                                     rt2x00dev->fw->data,
116                                                     rt2x00dev->fw->size);
117
118         /*
119          * When the firmware is uploaded to the hardware the LED
120          * association status might have been triggered, for correct
121          * LED handling it should now be reset.
122          */
123         rt2x00leds_led_assoc(rt2x00dev, false);
124
125         return retval;
126 }
127
128 void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
129 {
130         release_firmware(rt2x00dev->fw);
131         rt2x00dev->fw = NULL;
132 }