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1/*
2 * Copyright (c) 2008-2011 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
24static const struct platform_device_id ath9k_platform_id_table[] = {
25 {
26 .name = "ath9k",
27 .driver_data = AR5416_AR9100_DEVID,
28 },
29 {
30 .name = "ar933x_wmac",
31 .driver_data = AR9300_DEVID_AR9330,
32 },
33 {
34 .name = "ar934x_wmac",
35 .driver_data = AR9300_DEVID_AR9340,
36 },
37 {},
38};
39
40/* return bus cachesize in 4B word units */
41static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
42{
43 *csz = L1_CACHE_BYTES >> 2;
44}
45
46static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
47{
48 struct ath_softc *sc = (struct ath_softc *)common->priv;
49 struct platform_device *pdev = to_platform_device(sc->dev);
50 struct ath9k_platform_data *pdata;
51
52 pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
53 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
54 ath_err(common,
55 "%s: flash read failed, offset %08x is out of range\n",
56 __func__, off);
57 return false;
58 }
59
60 *data = pdata->eeprom_data[off];
61 return true;
62}
63
64static struct ath_bus_ops ath_ahb_bus_ops = {
65 .ath_bus_type = ATH_AHB,
66 .read_cachesize = ath_ahb_read_cachesize,
67 .eeprom_read = ath_ahb_eeprom_read,
68};
69
70static int ath_ahb_probe(struct platform_device *pdev)
71{
72 void __iomem *mem;
73 struct ath_softc *sc;
74 struct ieee80211_hw *hw;
75 struct resource *res;
76 const struct platform_device_id *id = platform_get_device_id(pdev);
77 int irq;
78 int ret = 0;
79 struct ath_hw *ah;
80 char hw_name[64];
81
82 if (!pdev->dev.platform_data) {
83 dev_err(&pdev->dev, "no platform data specified\n");
84 ret = -EINVAL;
85 goto err_out;
86 }
87
88 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
89 if (res == NULL) {
90 dev_err(&pdev->dev, "no memory resource found\n");
91 ret = -ENXIO;
92 goto err_out;
93 }
94
95 mem = ioremap_nocache(res->start, resource_size(res));
96 if (mem == NULL) {
97 dev_err(&pdev->dev, "ioremap failed\n");
98 ret = -ENOMEM;
99 goto err_out;
100 }
101
102 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
103 if (res == NULL) {
104 dev_err(&pdev->dev, "no IRQ resource found\n");
105 ret = -ENXIO;
106 goto err_iounmap;
107 }
108
109 irq = res->start;
110
111 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
112 if (hw == NULL) {
113 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
114 ret = -ENOMEM;
115 goto err_iounmap;
116 }
117
118 SET_IEEE80211_DEV(hw, &pdev->dev);
119 platform_set_drvdata(pdev, hw);
120
121 sc = hw->priv;
122 sc->hw = hw;
123 sc->dev = &pdev->dev;
124 sc->mem = mem;
125 sc->irq = irq;
126
127 /* Will be cleared in ath9k_start() */
128 sc->sc_flags |= SC_OP_INVALID;
129
130 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
131 if (ret) {
132 dev_err(&pdev->dev, "request_irq failed\n");
133 goto err_free_hw;
134 }
135
136 ret = ath9k_init_device(id->driver_data, sc, 0x0, &ath_ahb_bus_ops);
137 if (ret) {
138 dev_err(&pdev->dev, "failed to initialize device\n");
139 goto err_irq;
140 }
141
142 ah = sc->sc_ah;
143 ath9k_hw_name(ah, hw_name, sizeof(hw_name));
144 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
145 hw_name, (unsigned long)mem, irq);
146
147 return 0;
148
149 err_irq:
150 free_irq(irq, sc);
151 err_free_hw:
152 ieee80211_free_hw(hw);
153 platform_set_drvdata(pdev, NULL);
154 err_iounmap:
155 iounmap(mem);
156 err_out:
157 return ret;
158}
159
160static int ath_ahb_remove(struct platform_device *pdev)
161{
162 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
163
164 if (hw) {
165 struct ath_softc *sc = hw->priv;
166 void __iomem *mem = sc->mem;
167
168 ath9k_deinit_device(sc);
169 free_irq(sc->irq, sc);
170 ieee80211_free_hw(sc->hw);
171 iounmap(mem);
172 platform_set_drvdata(pdev, NULL);
173 }
174
175 return 0;
176}
177
178static struct platform_driver ath_ahb_driver = {
179 .probe = ath_ahb_probe,
180 .remove = ath_ahb_remove,
181 .driver = {
182 .name = "ath9k",
183 .owner = THIS_MODULE,
184 },
185 .id_table = ath9k_platform_id_table,
186};
187
188MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
189
190int ath_ahb_init(void)
191{
192 return platform_driver_register(&ath_ahb_driver);
193}
194
195void ath_ahb_exit(void)
196{
197 platform_driver_unregister(&ath_ahb_driver);
198}
1/*
2 * Copyright (c) 2008-2011 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/module.h>
22#include "ath9k.h"
23
24static const struct platform_device_id ath9k_platform_id_table[] = {
25 {
26 .name = "ath9k",
27 .driver_data = AR5416_AR9100_DEVID,
28 },
29 {
30 .name = "ar933x_wmac",
31 .driver_data = AR9300_DEVID_AR9330,
32 },
33 {
34 .name = "ar934x_wmac",
35 .driver_data = AR9300_DEVID_AR9340,
36 },
37 {
38 .name = "qca955x_wmac",
39 .driver_data = AR9300_DEVID_QCA955X,
40 },
41 {
42 .name = "qca953x_wmac",
43 .driver_data = AR9300_DEVID_AR953X,
44 },
45 {
46 .name = "qca956x_wmac",
47 .driver_data = AR9300_DEVID_QCA956X,
48 },
49 {},
50};
51
52/* return bus cachesize in 4B word units */
53static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
54{
55 *csz = L1_CACHE_BYTES >> 2;
56}
57
58static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
59{
60 ath_err(common, "%s: eeprom data has to be provided externally\n",
61 __func__);
62 return false;
63}
64
65static const struct ath_bus_ops ath_ahb_bus_ops = {
66 .ath_bus_type = ATH_AHB,
67 .read_cachesize = ath_ahb_read_cachesize,
68 .eeprom_read = ath_ahb_eeprom_read,
69};
70
71static int ath_ahb_probe(struct platform_device *pdev)
72{
73 void __iomem *mem;
74 struct ath_softc *sc;
75 struct ieee80211_hw *hw;
76 struct resource *res;
77 const struct platform_device_id *id = platform_get_device_id(pdev);
78 int irq;
79 int ret = 0;
80 struct ath_hw *ah;
81 char hw_name[64];
82
83 if (!dev_get_platdata(&pdev->dev)) {
84 dev_err(&pdev->dev, "no platform data specified\n");
85 return -EINVAL;
86 }
87
88 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
89 if (res == NULL) {
90 dev_err(&pdev->dev, "no memory resource found\n");
91 return -ENXIO;
92 }
93
94 mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res));
95 if (mem == NULL) {
96 dev_err(&pdev->dev, "ioremap failed\n");
97 return -ENOMEM;
98 }
99
100 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
101 if (res == NULL) {
102 dev_err(&pdev->dev, "no IRQ resource found\n");
103 return -ENXIO;
104 }
105
106 irq = res->start;
107
108 ath9k_fill_chanctx_ops();
109 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
110 if (hw == NULL) {
111 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
112 return -ENOMEM;
113 }
114
115 SET_IEEE80211_DEV(hw, &pdev->dev);
116 platform_set_drvdata(pdev, hw);
117
118 sc = hw->priv;
119 sc->hw = hw;
120 sc->dev = &pdev->dev;
121 sc->mem = mem;
122 sc->irq = irq;
123
124 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
125 if (ret) {
126 dev_err(&pdev->dev, "request_irq failed\n");
127 goto err_free_hw;
128 }
129
130 ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
131 if (ret) {
132 dev_err(&pdev->dev, "failed to initialize device\n");
133 goto err_irq;
134 }
135
136 ah = sc->sc_ah;
137 ath9k_hw_name(ah, hw_name, sizeof(hw_name));
138 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
139 hw_name, (unsigned long)mem, irq);
140
141 return 0;
142
143 err_irq:
144 free_irq(irq, sc);
145 err_free_hw:
146 ieee80211_free_hw(hw);
147 return ret;
148}
149
150static int ath_ahb_remove(struct platform_device *pdev)
151{
152 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
153
154 if (hw) {
155 struct ath_softc *sc = hw->priv;
156
157 ath9k_deinit_device(sc);
158 free_irq(sc->irq, sc);
159 ieee80211_free_hw(sc->hw);
160 }
161
162 return 0;
163}
164
165static struct platform_driver ath_ahb_driver = {
166 .probe = ath_ahb_probe,
167 .remove = ath_ahb_remove,
168 .driver = {
169 .name = "ath9k",
170 },
171 .id_table = ath9k_platform_id_table,
172};
173
174MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
175
176int ath_ahb_init(void)
177{
178 return platform_driver_register(&ath_ahb_driver);
179}
180
181void ath_ahb_exit(void)
182{
183 platform_driver_unregister(&ath_ahb_driver);
184}