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>
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.
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.
19 #include <linux/nl80211.h>
20 #include <linux/platform_device.h>
21 #include <linux/ath9k_platform.h>
24 /* return bus cachesize in 4B word units */
25 static void ath_ahb_read_cachesize(struct ath_common
*common
, int *csz
)
27 *csz
= L1_CACHE_BYTES
>> 2;
30 static bool ath_ahb_eeprom_read(struct ath_common
*common
, u32 off
, u16
*data
)
32 struct ath_softc
*sc
= (struct ath_softc
*)common
->priv
;
33 struct platform_device
*pdev
= to_platform_device(sc
->dev
);
34 struct ath9k_platform_data
*pdata
;
36 pdata
= (struct ath9k_platform_data
*) pdev
->dev
.platform_data
;
37 if (off
>= (ARRAY_SIZE(pdata
->eeprom_data
))) {
38 ath_print(common
, ATH_DBG_FATAL
,
39 "%s: flash read failed, offset %08x "
45 *data
= pdata
->eeprom_data
[off
];
49 static struct ath_bus_ops ath_ahb_bus_ops
= {
50 .ath_bus_type
= ATH_AHB
,
51 .read_cachesize
= ath_ahb_read_cachesize
,
52 .eeprom_read
= ath_ahb_eeprom_read
,
55 static int ath_ahb_probe(struct platform_device
*pdev
)
58 struct ath_wiphy
*aphy
;
60 struct ieee80211_hw
*hw
;
67 if (!pdev
->dev
.platform_data
) {
68 dev_err(&pdev
->dev
, "no platform data specified\n");
73 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
75 dev_err(&pdev
->dev
, "no memory resource found\n");
80 mem
= ioremap_nocache(res
->start
, res
->end
- res
->start
+ 1);
82 dev_err(&pdev
->dev
, "ioremap failed\n");
87 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
89 dev_err(&pdev
->dev
, "no IRQ resource found\n");
96 hw
= ieee80211_alloc_hw(sizeof(struct ath_wiphy
) +
97 sizeof(struct ath_softc
), &ath9k_ops
);
99 dev_err(&pdev
->dev
, "no memory for ieee80211_hw\n");
104 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
105 platform_set_drvdata(pdev
, hw
);
108 sc
= (struct ath_softc
*) (aphy
+ 1);
111 sc
->pri_wiphy
= aphy
;
113 sc
->dev
= &pdev
->dev
;
117 /* Will be cleared in ath9k_start() */
118 sc
->sc_flags
|= SC_OP_INVALID
;
120 ret
= request_irq(irq
, ath_isr
, IRQF_SHARED
, "ath9k", sc
);
122 dev_err(&pdev
->dev
, "request_irq failed\n");
126 ret
= ath9k_init_device(AR5416_AR9100_DEVID
, sc
, 0x0, &ath_ahb_bus_ops
);
128 dev_err(&pdev
->dev
, "failed to initialize device\n");
133 ath9k_hw_name(ah
, hw_name
, sizeof(hw_name
));
134 wiphy_info(hw
->wiphy
, "%s mem=0x%lx, irq=%d\n",
135 hw_name
, (unsigned long)mem
, irq
);
142 ieee80211_free_hw(hw
);
143 platform_set_drvdata(pdev
, NULL
);
150 static int ath_ahb_remove(struct platform_device
*pdev
)
152 struct ieee80211_hw
*hw
= platform_get_drvdata(pdev
);
155 struct ath_wiphy
*aphy
= hw
->priv
;
156 struct ath_softc
*sc
= aphy
->sc
;
157 void __iomem
*mem
= sc
->mem
;
159 ath9k_deinit_device(sc
);
160 free_irq(sc
->irq
, sc
);
161 ieee80211_free_hw(sc
->hw
);
163 platform_set_drvdata(pdev
, NULL
);
169 static struct platform_driver ath_ahb_driver
= {
170 .probe
= ath_ahb_probe
,
171 .remove
= ath_ahb_remove
,
174 .owner
= THIS_MODULE
,
178 int ath_ahb_init(void)
180 return platform_driver_register(&ath_ahb_driver
);
183 void ath_ahb_exit(void)
185 platform_driver_unregister(&ath_ahb_driver
);