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 void wl1271_sdio_set_block_size(struct wl1271
*wl
, unsigned int blksz
)
56 sdio_claim_host(wl
->if_priv
);
57 sdio_set_block_size(wl
->if_priv
, blksz
);
58 sdio_release_host(wl
->if_priv
);
61 static inline struct sdio_func
*wl_to_func(struct wl1271
*wl
)
66 static struct device
*wl1271_sdio_wl_to_dev(struct wl1271
*wl
)
68 return &(wl_to_func(wl
)->dev
);
71 static irqreturn_t
wl1271_hardirq(int irq
, void *cookie
)
73 struct wl1271
*wl
= cookie
;
76 wl1271_debug(DEBUG_IRQ
, "IRQ");
78 /* complete the ELP completion */
79 spin_lock_irqsave(&wl
->wl_lock
, flags
);
80 set_bit(WL1271_FLAG_IRQ_RUNNING
, &wl
->flags
);
82 complete(wl
->elp_compl
);
85 spin_unlock_irqrestore(&wl
->wl_lock
, flags
);
87 return IRQ_WAKE_THREAD
;
90 static void wl1271_sdio_disable_interrupts(struct wl1271
*wl
)
95 static void wl1271_sdio_enable_interrupts(struct wl1271
*wl
)
100 static void wl1271_sdio_reset(struct wl1271
*wl
)
104 static void wl1271_sdio_init(struct wl1271
*wl
)
108 static void wl1271_sdio_raw_read(struct wl1271
*wl
, int addr
, void *buf
,
109 size_t len
, bool fixed
)
112 struct sdio_func
*func
= wl_to_func(wl
);
114 if (unlikely(addr
== HW_ACCESS_ELP_CTRL_REG_ADDR
)) {
115 ((u8
*)buf
)[0] = sdio_f0_readb(func
, addr
, &ret
);
116 wl1271_debug(DEBUG_SDIO
, "sdio read 52 addr 0x%x, byte 0x%02x",
117 addr
, ((u8
*)buf
)[0]);
120 ret
= sdio_readsb(func
, buf
, addr
, len
);
122 ret
= sdio_memcpy_fromio(func
, buf
, addr
, len
);
124 wl1271_debug(DEBUG_SDIO
, "sdio read 53 addr 0x%x, %zu bytes",
126 wl1271_dump_ascii(DEBUG_SDIO
, "data: ", buf
, len
);
130 wl1271_error("sdio read failed (%d)", ret
);
133 static void wl1271_sdio_raw_write(struct wl1271
*wl
, int addr
, void *buf
,
134 size_t len
, bool fixed
)
137 struct sdio_func
*func
= wl_to_func(wl
);
139 if (unlikely(addr
== HW_ACCESS_ELP_CTRL_REG_ADDR
)) {
140 sdio_f0_writeb(func
, ((u8
*)buf
)[0], addr
, &ret
);
141 wl1271_debug(DEBUG_SDIO
, "sdio write 52 addr 0x%x, byte 0x%02x",
142 addr
, ((u8
*)buf
)[0]);
144 wl1271_debug(DEBUG_SDIO
, "sdio write 53 addr 0x%x, %zu bytes",
146 wl1271_dump_ascii(DEBUG_SDIO
, "data: ", buf
, len
);
149 ret
= sdio_writesb(func
, addr
, buf
, len
);
151 ret
= sdio_memcpy_toio(func
, addr
, buf
, len
);
155 wl1271_error("sdio write failed (%d)", ret
);
158 static int wl1271_sdio_power_on(struct wl1271
*wl
)
160 struct sdio_func
*func
= wl_to_func(wl
);
163 /* Make sure the card will not be powered off by runtime PM */
164 ret
= pm_runtime_get_sync(&func
->dev
);
168 /* Runtime PM might be disabled, so power up the card manually */
169 ret
= mmc_power_restore_host(func
->card
->host
);
173 sdio_claim_host(func
);
174 sdio_enable_func(func
);
180 static int wl1271_sdio_power_off(struct wl1271
*wl
)
182 struct sdio_func
*func
= wl_to_func(wl
);
185 sdio_disable_func(func
);
186 sdio_release_host(func
);
188 /* Runtime PM might be disabled, so power off the card manually */
189 ret
= mmc_power_save_host(func
->card
->host
);
193 /* Let runtime PM know the card is powered off */
194 return pm_runtime_put_sync(&func
->dev
);
197 static int wl1271_sdio_set_power(struct wl1271
*wl
, bool enable
)
200 return wl1271_sdio_power_on(wl
);
202 return wl1271_sdio_power_off(wl
);
205 static struct wl1271_if_operations sdio_ops
= {
206 .read
= wl1271_sdio_raw_read
,
207 .write
= wl1271_sdio_raw_write
,
208 .reset
= wl1271_sdio_reset
,
209 .init
= wl1271_sdio_init
,
210 .power
= wl1271_sdio_set_power
,
211 .dev
= wl1271_sdio_wl_to_dev
,
212 .enable_irq
= wl1271_sdio_enable_interrupts
,
213 .disable_irq
= wl1271_sdio_disable_interrupts
,
214 .set_block_size
= wl1271_sdio_set_block_size
,
217 static int __devinit
wl1271_probe(struct sdio_func
*func
,
218 const struct sdio_device_id
*id
)
220 struct ieee80211_hw
*hw
;
221 const struct wl12xx_platform_data
*wlan_data
;
223 unsigned long irqflags
;
226 /* We are only able to handle the wlan function */
227 if (func
->num
!= 0x02)
230 hw
= wl1271_alloc_hw();
237 wl
->if_ops
= &sdio_ops
;
239 /* Grab access to FN0 for ELP reg. */
240 func
->card
->quirks
|= MMC_QUIRK_LENIENT_FN0
;
242 /* Use block mode for transferring over one block size of data */
243 func
->card
->quirks
|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE
;
245 wlan_data
= wl12xx_get_platform_data();
246 if (IS_ERR(wlan_data
)) {
247 ret
= PTR_ERR(wlan_data
);
248 wl1271_error("missing wlan platform data: %d", ret
);
252 wl
->irq
= wlan_data
->irq
;
253 wl
->ref_clock
= wlan_data
->board_ref_clock
;
254 wl
->tcxo_clock
= wlan_data
->board_tcxo_clock
;
255 wl
->platform_quirks
= wlan_data
->platform_quirks
;
257 if (wl
->platform_quirks
& WL12XX_PLATFORM_QUIRK_EDGE_IRQ
)
258 irqflags
= IRQF_TRIGGER_RISING
;
260 irqflags
= IRQF_TRIGGER_HIGH
| IRQF_ONESHOT
;
262 ret
= request_threaded_irq(wl
->irq
, wl1271_hardirq
, wl1271_irq
,
266 wl1271_error("request_irq() failed: %d", ret
);
270 enable_irq_wake(wl
->irq
);
272 disable_irq(wl
->irq
);
274 ret
= wl1271_init_ieee80211(wl
);
278 ret
= wl1271_register_hw(wl
);
282 sdio_set_drvdata(func
, wl
);
284 /* Tell PM core that we don't need the card to be powered now */
285 pm_runtime_put_noidle(&func
->dev
);
287 wl1271_notice("initialized");
292 free_irq(wl
->irq
, wl
);
300 static void __devexit
wl1271_remove(struct sdio_func
*func
)
302 struct wl1271
*wl
= sdio_get_drvdata(func
);
304 /* Undo decrement done above in wl1271_probe */
305 pm_runtime_get_noresume(&func
->dev
);
307 wl1271_unregister_hw(wl
);
308 disable_irq_wake(wl
->irq
);
309 free_irq(wl
->irq
, wl
);
313 static int wl1271_suspend(struct device
*dev
)
315 /* Tell MMC/SDIO core it's OK to power down the card
316 * (if it isn't already), but not to remove it completely */
320 static int wl1271_resume(struct device
*dev
)
325 static const struct dev_pm_ops wl1271_sdio_pm_ops
= {
326 .suspend
= wl1271_suspend
,
327 .resume
= wl1271_resume
,
330 static struct sdio_driver wl1271_sdio_driver
= {
331 .name
= "wl1271_sdio",
332 .id_table
= wl1271_devices
,
333 .probe
= wl1271_probe
,
334 .remove
= __devexit_p(wl1271_remove
),
336 .pm
= &wl1271_sdio_pm_ops
,
340 static int __init
wl1271_init(void)
344 ret
= sdio_register_driver(&wl1271_sdio_driver
);
346 wl1271_error("failed to register sdio driver: %d", ret
);
354 static void __exit
wl1271_exit(void)
356 sdio_unregister_driver(&wl1271_sdio_driver
);
358 wl1271_notice("unloaded");
361 module_init(wl1271_init
);
362 module_exit(wl1271_exit
);
364 MODULE_LICENSE("GPL");
365 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
366 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
367 MODULE_FIRMWARE(WL1271_FW_NAME
);
368 MODULE_FIRMWARE(WL128X_FW_NAME
);
369 MODULE_FIRMWARE(WL127X_AP_FW_NAME
);
370 MODULE_FIRMWARE(WL128X_AP_FW_NAME
);