2 * This file is part of wl1271
4 * Copyright (C) 2009-2010 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 #include <linux/irq.h>
25 #include <linux/module.h>
26 #include <linux/crc7.h>
27 #include <linux/vmalloc.h>
28 #include <linux/mmc/sdio_func.h>
29 #include <linux/mmc/sdio_ids.h>
30 #include <linux/mmc/card.h>
31 #include <linux/mmc/host.h>
32 #include <linux/gpio.h>
33 #include <linux/wl12xx.h>
34 #include <linux/pm_runtime.h>
37 #include "wl12xx_80211.h"
40 #ifndef SDIO_VENDOR_ID_TI
41 #define SDIO_VENDOR_ID_TI 0x0097
44 #ifndef SDIO_DEVICE_ID_TI_WL1271
45 #define SDIO_DEVICE_ID_TI_WL1271 0x4076
48 static const struct sdio_device_id wl1271_devices
[] = {
49 { SDIO_DEVICE(SDIO_VENDOR_ID_TI
, SDIO_DEVICE_ID_TI_WL1271
) },
52 MODULE_DEVICE_TABLE(sdio
, wl1271_devices
);
54 static inline struct sdio_func
*wl_to_func(struct wl1271
*wl
)
59 static struct device
*wl1271_sdio_wl_to_dev(struct wl1271
*wl
)
61 return &(wl_to_func(wl
)->dev
);
64 static irqreturn_t
wl1271_irq(int irq
, void *cookie
)
66 struct wl1271
*wl
= cookie
;
69 wl1271_debug(DEBUG_IRQ
, "IRQ");
71 /* complete the ELP completion */
72 spin_lock_irqsave(&wl
->wl_lock
, flags
);
74 complete(wl
->elp_compl
);
78 if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING
, &wl
->flags
))
79 ieee80211_queue_work(wl
->hw
, &wl
->irq_work
);
80 set_bit(WL1271_FLAG_IRQ_PENDING
, &wl
->flags
);
81 spin_unlock_irqrestore(&wl
->wl_lock
, flags
);
86 static void wl1271_sdio_disable_interrupts(struct wl1271
*wl
)
91 static void wl1271_sdio_enable_interrupts(struct wl1271
*wl
)
96 static void wl1271_sdio_reset(struct wl1271
*wl
)
100 static void wl1271_sdio_init(struct wl1271
*wl
)
104 static void wl1271_sdio_raw_read(struct wl1271
*wl
, int addr
, void *buf
,
105 size_t len
, bool fixed
)
108 struct sdio_func
*func
= wl_to_func(wl
);
110 if (unlikely(addr
== HW_ACCESS_ELP_CTRL_REG_ADDR
)) {
111 ((u8
*)buf
)[0] = sdio_f0_readb(func
, addr
, &ret
);
112 wl1271_debug(DEBUG_SDIO
, "sdio read 52 addr 0x%x, byte 0x%02x",
113 addr
, ((u8
*)buf
)[0]);
116 ret
= sdio_readsb(func
, buf
, addr
, len
);
118 ret
= sdio_memcpy_fromio(func
, buf
, addr
, len
);
120 wl1271_debug(DEBUG_SDIO
, "sdio read 53 addr 0x%x, %zu bytes",
122 wl1271_dump_ascii(DEBUG_SDIO
, "data: ", buf
, len
);
126 wl1271_error("sdio read failed (%d)", ret
);
129 static void wl1271_sdio_raw_write(struct wl1271
*wl
, int addr
, void *buf
,
130 size_t len
, bool fixed
)
133 struct sdio_func
*func
= wl_to_func(wl
);
135 if (unlikely(addr
== HW_ACCESS_ELP_CTRL_REG_ADDR
)) {
136 sdio_f0_writeb(func
, ((u8
*)buf
)[0], addr
, &ret
);
137 wl1271_debug(DEBUG_SDIO
, "sdio write 52 addr 0x%x, byte 0x%02x",
138 addr
, ((u8
*)buf
)[0]);
140 wl1271_debug(DEBUG_SDIO
, "sdio write 53 addr 0x%x, %zu bytes",
142 wl1271_dump_ascii(DEBUG_SDIO
, "data: ", buf
, len
);
145 ret
= sdio_writesb(func
, addr
, buf
, len
);
147 ret
= sdio_memcpy_toio(func
, addr
, buf
, len
);
151 wl1271_error("sdio write failed (%d)", ret
);
154 static int wl1271_sdio_power_on(struct wl1271
*wl
)
156 struct sdio_func
*func
= wl_to_func(wl
);
159 /* Make sure the card will not be powered off by runtime PM */
160 ret
= pm_runtime_get_sync(&func
->dev
);
164 /* Runtime PM might be disabled, so power up the card manually */
165 ret
= mmc_power_restore_host(func
->card
->host
);
169 sdio_claim_host(func
);
170 sdio_enable_func(func
);
176 static int wl1271_sdio_power_off(struct wl1271
*wl
)
178 struct sdio_func
*func
= wl_to_func(wl
);
181 sdio_disable_func(func
);
182 sdio_release_host(func
);
184 /* Runtime PM might be disabled, so power off the card manually */
185 ret
= mmc_power_save_host(func
->card
->host
);
189 /* Let runtime PM know the card is powered off */
190 return pm_runtime_put_sync(&func
->dev
);
193 static int wl1271_sdio_set_power(struct wl1271
*wl
, bool enable
)
196 return wl1271_sdio_power_on(wl
);
198 return wl1271_sdio_power_off(wl
);
201 static struct wl1271_if_operations sdio_ops
= {
202 .read
= wl1271_sdio_raw_read
,
203 .write
= wl1271_sdio_raw_write
,
204 .reset
= wl1271_sdio_reset
,
205 .init
= wl1271_sdio_init
,
206 .power
= wl1271_sdio_set_power
,
207 .dev
= wl1271_sdio_wl_to_dev
,
208 .enable_irq
= wl1271_sdio_enable_interrupts
,
209 .disable_irq
= wl1271_sdio_disable_interrupts
212 static int __devinit
wl1271_probe(struct sdio_func
*func
,
213 const struct sdio_device_id
*id
)
215 struct ieee80211_hw
*hw
;
216 const struct wl12xx_platform_data
*wlan_data
;
220 /* We are only able to handle the wlan function */
221 if (func
->num
!= 0x02)
224 hw
= wl1271_alloc_hw();
231 wl
->if_ops
= &sdio_ops
;
233 /* Grab access to FN0 for ELP reg. */
234 func
->card
->quirks
|= MMC_QUIRK_LENIENT_FN0
;
236 wlan_data
= wl12xx_get_platform_data();
237 if (IS_ERR(wlan_data
)) {
238 ret
= PTR_ERR(wlan_data
);
239 wl1271_error("missing wlan platform data: %d", ret
);
243 wl
->irq
= wlan_data
->irq
;
244 wl
->ref_clock
= wlan_data
->board_ref_clock
;
246 ret
= request_irq(wl
->irq
, wl1271_irq
, 0, DRIVER_NAME
, wl
);
248 wl1271_error("request_irq() failed: %d", ret
);
252 set_irq_type(wl
->irq
, IRQ_TYPE_EDGE_RISING
);
254 disable_irq(wl
->irq
);
256 ret
= wl1271_init_ieee80211(wl
);
260 ret
= wl1271_register_hw(wl
);
264 sdio_set_drvdata(func
, wl
);
266 /* Tell PM core that we don't need the card to be powered now */
267 pm_runtime_put_noidle(&func
->dev
);
269 wl1271_notice("initialized");
274 free_irq(wl
->irq
, wl
);
283 static void __devexit
wl1271_remove(struct sdio_func
*func
)
285 struct wl1271
*wl
= sdio_get_drvdata(func
);
287 /* Undo decrement done above in wl1271_probe */
288 pm_runtime_get_noresume(&func
->dev
);
290 wl1271_unregister_hw(wl
);
291 free_irq(wl
->irq
, wl
);
295 static int wl1271_suspend(struct device
*dev
)
297 /* Tell MMC/SDIO core it's OK to power down the card
298 * (if it isn't already), but not to remove it completely */
302 static int wl1271_resume(struct device
*dev
)
307 static const struct dev_pm_ops wl1271_sdio_pm_ops
= {
308 .suspend
= wl1271_suspend
,
309 .resume
= wl1271_resume
,
312 static struct sdio_driver wl1271_sdio_driver
= {
313 .name
= "wl1271_sdio",
314 .id_table
= wl1271_devices
,
315 .probe
= wl1271_probe
,
316 .remove
= __devexit_p(wl1271_remove
),
318 .pm
= &wl1271_sdio_pm_ops
,
322 static int __init
wl1271_init(void)
326 ret
= sdio_register_driver(&wl1271_sdio_driver
);
328 wl1271_error("failed to register sdio driver: %d", ret
);
336 static void __exit
wl1271_exit(void)
338 sdio_unregister_driver(&wl1271_sdio_driver
);
340 wl1271_notice("unloaded");
343 module_init(wl1271_init
);
344 module_exit(wl1271_exit
);
346 MODULE_LICENSE("GPL");
347 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
348 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
349 MODULE_FIRMWARE(WL1271_FW_NAME
);
350 MODULE_FIRMWARE(WL1271_AP_FW_NAME
);