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/vmalloc.h>
27 #include <linux/platform_device.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 struct wl12xx_sdio_glue
{
50 struct platform_device
*core
;
53 static const struct sdio_device_id wl1271_devices
[] __devinitconst
= {
54 { SDIO_DEVICE(SDIO_VENDOR_ID_TI
, SDIO_DEVICE_ID_TI_WL1271
) },
57 MODULE_DEVICE_TABLE(sdio
, wl1271_devices
);
59 static void wl1271_sdio_set_block_size(struct device
*child
,
62 struct wl12xx_sdio_glue
*glue
= dev_get_drvdata(child
->parent
);
63 struct sdio_func
*func
= dev_to_sdio_func(glue
->dev
);
65 sdio_claim_host(func
);
66 sdio_set_block_size(func
, blksz
);
67 sdio_release_host(func
);
70 static void wl12xx_sdio_raw_read(struct device
*child
, int addr
, void *buf
,
71 size_t len
, bool fixed
)
74 struct wl12xx_sdio_glue
*glue
= dev_get_drvdata(child
->parent
);
75 struct sdio_func
*func
= dev_to_sdio_func(glue
->dev
);
77 sdio_claim_host(func
);
79 if (unlikely(addr
== HW_ACCESS_ELP_CTRL_REG_ADDR
)) {
80 ((u8
*)buf
)[0] = sdio_f0_readb(func
, addr
, &ret
);
81 dev_dbg(child
->parent
, "sdio read 52 addr 0x%x, byte 0x%02x\n",
82 addr
, ((u8
*)buf
)[0]);
85 ret
= sdio_readsb(func
, buf
, addr
, len
);
87 ret
= sdio_memcpy_fromio(func
, buf
, addr
, len
);
89 dev_dbg(child
->parent
, "sdio read 53 addr 0x%x, %zu bytes\n",
93 sdio_release_host(func
);
96 dev_err(child
->parent
, "sdio read failed (%d)\n", ret
);
99 static void wl12xx_sdio_raw_write(struct device
*child
, int addr
, void *buf
,
100 size_t len
, bool fixed
)
103 struct wl12xx_sdio_glue
*glue
= dev_get_drvdata(child
->parent
);
104 struct sdio_func
*func
= dev_to_sdio_func(glue
->dev
);
106 sdio_claim_host(func
);
108 if (unlikely(addr
== HW_ACCESS_ELP_CTRL_REG_ADDR
)) {
109 sdio_f0_writeb(func
, ((u8
*)buf
)[0], addr
, &ret
);
110 dev_dbg(child
->parent
, "sdio write 52 addr 0x%x, byte 0x%02x\n",
111 addr
, ((u8
*)buf
)[0]);
113 dev_dbg(child
->parent
, "sdio write 53 addr 0x%x, %zu bytes\n",
117 ret
= sdio_writesb(func
, addr
, buf
, len
);
119 ret
= sdio_memcpy_toio(func
, addr
, buf
, len
);
122 sdio_release_host(func
);
125 dev_err(child
->parent
, "sdio write failed (%d)\n", ret
);
128 static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue
*glue
)
131 struct sdio_func
*func
= dev_to_sdio_func(glue
->dev
);
133 /* If enabled, tell runtime PM not to power off the card */
134 if (pm_runtime_enabled(&func
->dev
)) {
135 ret
= pm_runtime_get_sync(&func
->dev
);
139 /* Runtime PM is disabled: power up the card manually */
140 ret
= mmc_power_restore_host(func
->card
->host
);
145 sdio_claim_host(func
);
146 sdio_enable_func(func
);
147 sdio_release_host(func
);
153 static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue
*glue
)
156 struct sdio_func
*func
= dev_to_sdio_func(glue
->dev
);
158 sdio_claim_host(func
);
159 sdio_disable_func(func
);
160 sdio_release_host(func
);
162 /* Power off the card manually, even if runtime PM is enabled. */
163 ret
= mmc_power_save_host(func
->card
->host
);
167 /* If enabled, let runtime PM know the card is powered off */
168 if (pm_runtime_enabled(&func
->dev
))
169 ret
= pm_runtime_put_sync(&func
->dev
);
174 static int wl12xx_sdio_set_power(struct device
*child
, bool enable
)
176 struct wl12xx_sdio_glue
*glue
= dev_get_drvdata(child
->parent
);
179 return wl12xx_sdio_power_on(glue
);
181 return wl12xx_sdio_power_off(glue
);
184 static struct wl1271_if_operations sdio_ops
= {
185 .read
= wl12xx_sdio_raw_read
,
186 .write
= wl12xx_sdio_raw_write
,
187 .power
= wl12xx_sdio_set_power
,
188 .set_block_size
= wl1271_sdio_set_block_size
,
191 static int __devinit
wl1271_probe(struct sdio_func
*func
,
192 const struct sdio_device_id
*id
)
194 struct wl12xx_platform_data
*wlan_data
;
195 struct wl12xx_sdio_glue
*glue
;
196 struct resource res
[1];
197 mmc_pm_flag_t mmcflags
;
200 /* We are only able to handle the wlan function */
201 if (func
->num
!= 0x02)
204 glue
= kzalloc(sizeof(*glue
), GFP_KERNEL
);
206 dev_err(&func
->dev
, "can't allocate glue\n");
210 glue
->dev
= &func
->dev
;
212 /* Grab access to FN0 for ELP reg. */
213 func
->card
->quirks
|= MMC_QUIRK_LENIENT_FN0
;
215 /* Use block mode for transferring over one block size of data */
216 func
->card
->quirks
|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE
;
218 wlan_data
= wl12xx_get_platform_data();
219 if (IS_ERR(wlan_data
)) {
220 ret
= PTR_ERR(wlan_data
);
221 dev_err(glue
->dev
, "missing wlan platform data: %d\n", ret
);
225 /* if sdio can keep power while host is suspended, enable wow */
226 mmcflags
= sdio_get_host_pm_caps(func
);
227 dev_dbg(glue
->dev
, "sdio PM caps = 0x%x\n", mmcflags
);
229 if (mmcflags
& MMC_PM_KEEP_POWER
)
230 wlan_data
->pwr_in_suspend
= true;
232 wlan_data
->ops
= &sdio_ops
;
234 sdio_set_drvdata(func
, glue
);
236 /* Tell PM core that we don't need the card to be powered now */
237 pm_runtime_put_noidle(&func
->dev
);
239 glue
->core
= platform_device_alloc("wl12xx", -1);
241 dev_err(glue
->dev
, "can't allocate platform_device");
246 glue
->core
->dev
.parent
= &func
->dev
;
248 memset(res
, 0x00, sizeof(res
));
250 res
[0].start
= wlan_data
->irq
;
251 res
[0].flags
= IORESOURCE_IRQ
;
254 ret
= platform_device_add_resources(glue
->core
, res
, ARRAY_SIZE(res
));
256 dev_err(glue
->dev
, "can't add resources\n");
260 ret
= platform_device_add_data(glue
->core
, wlan_data
,
263 dev_err(glue
->dev
, "can't add platform data\n");
267 ret
= platform_device_add(glue
->core
);
269 dev_err(glue
->dev
, "can't add platform device\n");
275 platform_device_put(glue
->core
);
284 static void __devexit
wl1271_remove(struct sdio_func
*func
)
286 struct wl12xx_sdio_glue
*glue
= sdio_get_drvdata(func
);
288 /* Undo decrement done above in wl1271_probe */
289 pm_runtime_get_noresume(&func
->dev
);
291 platform_device_del(glue
->core
);
292 platform_device_put(glue
->core
);
297 static int wl1271_suspend(struct device
*dev
)
299 /* Tell MMC/SDIO core it's OK to power down the card
300 * (if it isn't already), but not to remove it completely */
301 struct sdio_func
*func
= dev_to_sdio_func(dev
);
302 struct wl12xx_sdio_glue
*glue
= sdio_get_drvdata(func
);
303 struct wl1271
*wl
= platform_get_drvdata(glue
->core
);
304 mmc_pm_flag_t sdio_flags
;
307 dev_dbg(dev
, "wl1271 suspend. wow_enabled: %d\n",
310 /* check whether sdio should keep power */
311 if (wl
->wow_enabled
) {
312 sdio_flags
= sdio_get_host_pm_caps(func
);
314 if (!(sdio_flags
& MMC_PM_KEEP_POWER
)) {
315 dev_err(dev
, "can't keep power while host "
321 /* keep power while host suspended */
322 ret
= sdio_set_host_pm_flags(func
, MMC_PM_KEEP_POWER
);
324 dev_err(dev
, "error while trying to keep power\n");
332 static int wl1271_resume(struct device
*dev
)
334 dev_dbg(dev
, "wl1271 resume\n");
339 static const struct dev_pm_ops wl1271_sdio_pm_ops
= {
340 .suspend
= wl1271_suspend
,
341 .resume
= wl1271_resume
,
345 static struct sdio_driver wl1271_sdio_driver
= {
346 .name
= "wl1271_sdio",
347 .id_table
= wl1271_devices
,
348 .probe
= wl1271_probe
,
349 .remove
= __devexit_p(wl1271_remove
),
352 .pm
= &wl1271_sdio_pm_ops
,
357 static int __init
wl1271_init(void)
359 return sdio_register_driver(&wl1271_sdio_driver
);
362 static void __exit
wl1271_exit(void)
364 sdio_unregister_driver(&wl1271_sdio_driver
);
367 module_init(wl1271_init
);
368 module_exit(wl1271_exit
);
370 MODULE_LICENSE("GPL");
371 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
372 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
373 MODULE_FIRMWARE(WL127X_FW_NAME_SINGLE
);
374 MODULE_FIRMWARE(WL127X_FW_NAME_MULTI
);
375 MODULE_FIRMWARE(WL127X_PLT_FW_NAME
);
376 MODULE_FIRMWARE(WL128X_FW_NAME_SINGLE
);
377 MODULE_FIRMWARE(WL128X_FW_NAME_MULTI
);
378 MODULE_FIRMWARE(WL128X_PLT_FW_NAME
);