blob: 5193ed58a17b781516bd0a6773762b68fdb5f3f8 [file] [log] [blame]
Gabor Juhos09329d32009-01-14 20:17:07 +01001/*
Sujithcee075a2009-03-13 09:07:23 +05302 * Copyright (c) 2008-2009 Atheros Communications Inc.
Gabor Juhos09329d32009-01-14 20:17:07 +01003 * 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>
Gabor Juhos9dbeb912009-01-14 20:17:08 +010021#include <linux/ath9k_platform.h>
Sujith394cf0a2009-02-09 13:26:54 +053022#include "ath9k.h"
Gabor Juhos09329d32009-01-14 20:17:07 +010023
Vasanthakumar Thiagarajan6f11c812011-04-12 12:42:22 +053024const struct platform_device_id ath9k_platform_id_table[] = {
25 {
26 .name = "ath9k",
27 .driver_data = AR5416_AR9100_DEVID,
28 },
29 {},
30};
31
Gabor Juhos09329d32009-01-14 20:17:07 +010032/* return bus cachesize in 4B word units */
Luis R. Rodriguez5bb12792009-09-14 00:55:09 -070033static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
Gabor Juhos09329d32009-01-14 20:17:07 +010034{
35 *csz = L1_CACHE_BYTES >> 2;
36}
37
Luis R. Rodriguez5bb12792009-09-14 00:55:09 -070038static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
Gabor Juhos9dbeb912009-01-14 20:17:08 +010039{
Marek Lindnere307fcf2009-10-14 23:04:45 +080040 struct ath_softc *sc = (struct ath_softc *)common->priv;
Gabor Juhos9dbeb912009-01-14 20:17:08 +010041 struct platform_device *pdev = to_platform_device(sc->dev);
42 struct ath9k_platform_data *pdata;
43
44 pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
45 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
Joe Perches38002762010-12-02 19:12:36 -080046 ath_err(common,
47 "%s: flash read failed, offset %08x is out of range\n",
48 __func__, off);
Gabor Juhos9dbeb912009-01-14 20:17:08 +010049 return false;
50 }
51
52 *data = pdata->eeprom_data[off];
53 return true;
54}
55
Gabor Juhos09329d32009-01-14 20:17:07 +010056static struct ath_bus_ops ath_ahb_bus_ops = {
Sujith497ad9a2010-04-01 10:28:20 +053057 .ath_bus_type = ATH_AHB,
Gabor Juhos09329d32009-01-14 20:17:07 +010058 .read_cachesize = ath_ahb_read_cachesize,
Gabor Juhos9dbeb912009-01-14 20:17:08 +010059 .eeprom_read = ath_ahb_eeprom_read,
Gabor Juhos09329d32009-01-14 20:17:07 +010060};
61
62static int ath_ahb_probe(struct platform_device *pdev)
63{
64 void __iomem *mem;
65 struct ath_softc *sc;
66 struct ieee80211_hw *hw;
67 struct resource *res;
Vasanthakumar Thiagarajan6f11c812011-04-12 12:42:22 +053068 const struct platform_device_id *id = platform_get_device_id(pdev);
Gabor Juhos09329d32009-01-14 20:17:07 +010069 int irq;
70 int ret = 0;
Sujithcbe61d82009-02-09 13:27:12 +053071 struct ath_hw *ah;
Luis R. Rodriguezf934c4d2009-10-27 12:59:34 -040072 char hw_name[64];
Gabor Juhos09329d32009-01-14 20:17:07 +010073
Gabor Juhos9dbeb912009-01-14 20:17:08 +010074 if (!pdev->dev.platform_data) {
75 dev_err(&pdev->dev, "no platform data specified\n");
76 ret = -EINVAL;
77 goto err_out;
78 }
79
Gabor Juhos09329d32009-01-14 20:17:07 +010080 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
81 if (res == NULL) {
82 dev_err(&pdev->dev, "no memory resource found\n");
83 ret = -ENXIO;
84 goto err_out;
85 }
86
Shan Wei9ac47932011-03-07 15:18:11 +080087 mem = ioremap_nocache(res->start, resource_size(res));
Gabor Juhos09329d32009-01-14 20:17:07 +010088 if (mem == NULL) {
89 dev_err(&pdev->dev, "ioremap failed\n");
90 ret = -ENOMEM;
91 goto err_out;
92 }
93
94 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
95 if (res == NULL) {
96 dev_err(&pdev->dev, "no IRQ resource found\n");
97 ret = -ENXIO;
98 goto err_iounmap;
99 }
100
101 irq = res->start;
102
Felix Fietkau9ac58612011-01-24 19:23:18 +0100103 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
Gabor Juhos09329d32009-01-14 20:17:07 +0100104 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
Felix Fietkau9ac58612011-01-24 19:23:18 +0100113 sc = hw->priv;
Gabor Juhos09329d32009-01-14 20:17:07 +0100114 sc->hw = hw;
115 sc->dev = &pdev->dev;
116 sc->mem = mem;
Gabor Juhos09329d32009-01-14 20:17:07 +0100117 sc->irq = irq;
118
Sujith5e4ea1f2010-01-14 10:20:57 +0530119 /* Will be cleared in ath9k_start() */
120 sc->sc_flags |= SC_OP_INVALID;
121
Gabor Juhos09329d32009-01-14 20:17:07 +0100122 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
123 if (ret) {
Luis R. Rodriguez580171f2009-09-02 17:02:18 -0700124 dev_err(&pdev->dev, "request_irq failed\n");
Sujith285f2dd2010-01-08 10:36:07 +0530125 goto err_free_hw;
126 }
127
Vasanthakumar Thiagarajan6f11c812011-04-12 12:42:22 +0530128 ret = ath9k_init_device(id->driver_data, sc, 0x0, &ath_ahb_bus_ops);
Sujith285f2dd2010-01-08 10:36:07 +0530129 if (ret) {
130 dev_err(&pdev->dev, "failed to initialize device\n");
131 goto err_irq;
Gabor Juhos09329d32009-01-14 20:17:07 +0100132 }
133
134 ah = sc->sc_ah;
Luis R. Rodriguezf934c4d2009-10-27 12:59:34 -0400135 ath9k_hw_name(ah, hw_name, sizeof(hw_name));
Joe Perchesc96c31e2010-07-26 14:39:58 -0700136 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
137 hw_name, (unsigned long)mem, irq);
Gabor Juhos09329d32009-01-14 20:17:07 +0100138
139 return 0;
140
Sujith285f2dd2010-01-08 10:36:07 +0530141 err_irq:
142 free_irq(irq, sc);
Gabor Juhos09329d32009-01-14 20:17:07 +0100143 err_free_hw:
144 ieee80211_free_hw(hw);
145 platform_set_drvdata(pdev, NULL);
146 err_iounmap:
147 iounmap(mem);
148 err_out:
149 return ret;
150}
151
152static int ath_ahb_remove(struct platform_device *pdev)
153{
154 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
155
156 if (hw) {
Felix Fietkau9ac58612011-01-24 19:23:18 +0100157 struct ath_softc *sc = hw->priv;
Pavel Roskinab5132a2010-01-30 21:37:24 -0500158 void __iomem *mem = sc->mem;
Gabor Juhos09329d32009-01-14 20:17:07 +0100159
Sujith285f2dd2010-01-08 10:36:07 +0530160 ath9k_deinit_device(sc);
161 free_irq(sc->irq, sc);
162 ieee80211_free_hw(sc->hw);
Pavel Roskinab5132a2010-01-30 21:37:24 -0500163 iounmap(mem);
Gabor Juhos09329d32009-01-14 20:17:07 +0100164 platform_set_drvdata(pdev, NULL);
165 }
166
167 return 0;
168}
169
170static struct platform_driver ath_ahb_driver = {
171 .probe = ath_ahb_probe,
172 .remove = ath_ahb_remove,
173 .driver = {
174 .name = "ath9k",
175 .owner = THIS_MODULE,
176 },
Vasanthakumar Thiagarajan6f11c812011-04-12 12:42:22 +0530177 .id_table = ath9k_platform_id_table,
Gabor Juhos09329d32009-01-14 20:17:07 +0100178};
179
Vasanthakumar Thiagarajan6f11c812011-04-12 12:42:22 +0530180MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
181
Gabor Juhos09329d32009-01-14 20:17:07 +0100182int ath_ahb_init(void)
183{
184 return platform_driver_register(&ath_ahb_driver);
185}
186
187void ath_ahb_exit(void)
188{
189 platform_driver_unregister(&ath_ahb_driver);
190}