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ath9k: adjust ahb callbacks to new struct layout to avoid compile errors
[lisovros/linux_canprio.git] / drivers / net / wireless / ath / ath9k / ahb.c
1 /*
2  * Copyright (c) 2008-2009 Atheros Communications Inc.
3  * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
4  * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
5  *
6  * Permission to use, copy, modify, and/or distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18
19 #include <linux/nl80211.h>
20 #include <linux/platform_device.h>
21 #include <linux/ath9k_platform.h>
22 #include "ath9k.h"
23
24 /* return bus cachesize in 4B word units */
25 static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
26 {
27         *csz = L1_CACHE_BYTES >> 2;
28 }
29
30 static void ath_ahb_cleanup(struct ath_common *common)
31 {
32         struct ath_softc *sc = (struct ath_softc *)common->priv;
33         iounmap(sc->mem);
34 }
35
36 static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
37 {
38         struct ath_softc *sc = (struct ath_softc *)common->priv;
39         struct platform_device *pdev = to_platform_device(sc->dev);
40         struct ath9k_platform_data *pdata;
41
42         pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
43         if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
44                 ath_print(common, ATH_DBG_FATAL,
45                           "%s: flash read failed, offset %08x "
46                           "is out of range\n",
47                           __func__, off);
48                 return false;
49         }
50
51         *data = pdata->eeprom_data[off];
52         return true;
53 }
54
55 static struct ath_bus_ops ath_ahb_bus_ops  = {
56         .read_cachesize = ath_ahb_read_cachesize,
57         .cleanup = ath_ahb_cleanup,
58
59         .eeprom_read = ath_ahb_eeprom_read,
60 };
61
62 static int ath_ahb_probe(struct platform_device *pdev)
63 {
64         void __iomem *mem;
65         struct ath_wiphy *aphy;
66         struct ath_softc *sc;
67         struct ieee80211_hw *hw;
68         struct resource *res;
69         int irq;
70         int ret = 0;
71         struct ath_hw *ah;
72
73         if (!pdev->dev.platform_data) {
74                 dev_err(&pdev->dev, "no platform data specified\n");
75                 ret = -EINVAL;
76                 goto err_out;
77         }
78
79         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
80         if (res == NULL) {
81                 dev_err(&pdev->dev, "no memory resource found\n");
82                 ret = -ENXIO;
83                 goto err_out;
84         }
85
86         mem = ioremap_nocache(res->start, res->end - res->start + 1);
87         if (mem == NULL) {
88                 dev_err(&pdev->dev, "ioremap failed\n");
89                 ret = -ENOMEM;
90                 goto err_out;
91         }
92
93         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
94         if (res == NULL) {
95                 dev_err(&pdev->dev, "no IRQ resource found\n");
96                 ret = -ENXIO;
97                 goto err_iounmap;
98         }
99
100         irq = res->start;
101
102         hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) +
103                                 sizeof(struct ath_softc), &ath9k_ops);
104         if (hw == NULL) {
105                 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
106                 ret = -ENOMEM;
107                 goto err_iounmap;
108         }
109
110         SET_IEEE80211_DEV(hw, &pdev->dev);
111         platform_set_drvdata(pdev, hw);
112
113         aphy = hw->priv;
114         sc = (struct ath_softc *) (aphy + 1);
115         aphy->sc = sc;
116         aphy->hw = hw;
117         sc->pri_wiphy = aphy;
118         sc->hw = hw;
119         sc->dev = &pdev->dev;
120         sc->mem = mem;
121         sc->irq = irq;
122
123         ret = ath_init_device(AR5416_AR9100_DEVID, sc, 0x0, &ath_ahb_bus_ops);
124         if (ret) {
125                 dev_err(&pdev->dev, "failed to initialize device\n");
126                 goto err_free_hw;
127         }
128
129         ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
130         if (ret) {
131                 dev_err(&pdev->dev, "request_irq failed\n");
132                 goto err_detach;
133         }
134
135         ah = sc->sc_ah;
136         printk(KERN_INFO
137                "%s: Atheros AR%s MAC/BB Rev:%x, "
138                "AR%s RF Rev:%x, mem=0x%lx, irq=%d\n",
139                wiphy_name(hw->wiphy),
140                ath_mac_bb_name(ah->hw_version.macVersion),
141                ah->hw_version.macRev,
142                ath_rf_name((ah->hw_version.analog5GhzRev & AR_RADIO_SREV_MAJOR)),
143                ah->hw_version.phyRev,
144                (unsigned long)mem, irq);
145
146         return 0;
147
148  err_detach:
149         ath_detach(sc);
150  err_free_hw:
151         ieee80211_free_hw(hw);
152         platform_set_drvdata(pdev, NULL);
153  err_iounmap:
154         iounmap(mem);
155  err_out:
156         return ret;
157 }
158
159 static int ath_ahb_remove(struct platform_device *pdev)
160 {
161         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
162
163         if (hw) {
164                 struct ath_wiphy *aphy = hw->priv;
165                 struct ath_softc *sc = aphy->sc;
166
167                 ath_cleanup(sc);
168                 platform_set_drvdata(pdev, NULL);
169         }
170
171         return 0;
172 }
173
174 static struct platform_driver ath_ahb_driver = {
175         .probe      = ath_ahb_probe,
176         .remove     = ath_ahb_remove,
177         .driver         = {
178                 .name   = "ath9k",
179                 .owner  = THIS_MODULE,
180         },
181 };
182
183 int ath_ahb_init(void)
184 {
185         return platform_driver_register(&ath_ahb_driver);
186 }
187
188 void ath_ahb_exit(void)
189 {
190         platform_driver_unregister(&ath_ahb_driver);
191 }