Commit | Line | Data |
---|---|---|
5129dffe TP |
1 | /* |
2 | * This file is part of wl1271 | |
3 | * | |
4 | * Copyright (C) 2009-2010 Nokia Corporation | |
5 | * | |
6 | * Contact: Luciano Coelho <luciano.coelho@nokia.com> | |
7 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | * 02110-1301 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/irq.h> | |
25 | #include <linux/module.h> | |
5129dffe | 26 | #include <linux/vmalloc.h> |
025aef8f | 27 | #include <linux/platform_device.h> |
197c6283 | 28 | #include <linux/mmc/sdio.h> |
5129dffe TP |
29 | #include <linux/mmc/sdio_func.h> |
30 | #include <linux/mmc/sdio_ids.h> | |
31 | #include <linux/mmc/card.h> | |
11251e7e | 32 | #include <linux/mmc/host.h> |
19b87173 | 33 | #include <linux/gpio.h> |
09cecc34 | 34 | #include <linux/wl12xx.h> |
00cbb3c5 | 35 | #include <linux/pm_runtime.h> |
df472894 | 36 | #include <linux/printk.h> |
5129dffe | 37 | |
c31be25a | 38 | #include "wlcore.h" |
5129dffe | 39 | #include "wl12xx_80211.h" |
00d20100 | 40 | #include "io.h" |
5129dffe | 41 | |
5129dffe TP |
42 | #ifndef SDIO_VENDOR_ID_TI |
43 | #define SDIO_VENDOR_ID_TI 0x0097 | |
44 | #endif | |
45 | ||
46 | #ifndef SDIO_DEVICE_ID_TI_WL1271 | |
47 | #define SDIO_DEVICE_ID_TI_WL1271 0x4076 | |
48 | #endif | |
49 | ||
df472894 LC |
50 | static bool dump = false; |
51 | ||
fbe936bc FB |
52 | struct wl12xx_sdio_glue { |
53 | struct device *dev; | |
025aef8f | 54 | struct platform_device *core; |
fbe936bc FB |
55 | }; |
56 | ||
33dd74c7 | 57 | static const struct sdio_device_id wl1271_devices[] __devinitconst = { |
5129dffe TP |
58 | { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) }, |
59 | {} | |
60 | }; | |
61 | MODULE_DEVICE_TABLE(sdio, wl1271_devices); | |
62 | ||
a390e85c FB |
63 | static void wl1271_sdio_set_block_size(struct device *child, |
64 | unsigned int blksz) | |
a81159ed | 65 | { |
a390e85c FB |
66 | struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent); |
67 | struct sdio_func *func = dev_to_sdio_func(glue->dev); | |
5129dffe | 68 | |
a390e85c FB |
69 | sdio_claim_host(func); |
70 | sdio_set_block_size(func, blksz); | |
71 | sdio_release_host(func); | |
5129dffe TP |
72 | } |
73 | ||
f1a26e63 IY |
74 | static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr, |
75 | void *buf, size_t len, bool fixed) | |
5129dffe TP |
76 | { |
77 | int ret; | |
a390e85c | 78 | struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent); |
fbe936bc | 79 | struct sdio_func *func = dev_to_sdio_func(glue->dev); |
5129dffe | 80 | |
b4748306 EP |
81 | sdio_claim_host(func); |
82 | ||
df472894 LC |
83 | if (unlikely(dump)) { |
84 | printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr); | |
85 | print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ", | |
86 | DUMP_PREFIX_OFFSET, 16, 1, | |
87 | buf, len, false); | |
88 | } | |
89 | ||
00782136 | 90 | if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) { |
5129dffe | 91 | ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret); |
3c4d3868 LC |
92 | dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n", |
93 | addr, ((u8 *)buf)[0]); | |
5129dffe TP |
94 | } else { |
95 | if (fixed) | |
96 | ret = sdio_readsb(func, buf, addr, len); | |
97 | else | |
98 | ret = sdio_memcpy_fromio(func, buf, addr, len); | |
99 | ||
3c4d3868 LC |
100 | dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n", |
101 | addr, len); | |
5129dffe TP |
102 | } |
103 | ||
b4748306 EP |
104 | sdio_release_host(func); |
105 | ||
02eb1d9d | 106 | if (WARN_ON(ret)) |
3c4d3868 | 107 | dev_err(child->parent, "sdio read failed (%d)\n", ret); |
02eb1d9d IY |
108 | |
109 | return ret; | |
5129dffe TP |
110 | } |
111 | ||
f1a26e63 IY |
112 | static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr, |
113 | void *buf, size_t len, bool fixed) | |
5129dffe TP |
114 | { |
115 | int ret; | |
a390e85c | 116 | struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent); |
fbe936bc | 117 | struct sdio_func *func = dev_to_sdio_func(glue->dev); |
5129dffe | 118 | |
b4748306 EP |
119 | sdio_claim_host(func); |
120 | ||
df472894 LC |
121 | if (unlikely(dump)) { |
122 | printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr); | |
123 | print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ", | |
124 | DUMP_PREFIX_OFFSET, 16, 1, | |
125 | buf, len, false); | |
126 | } | |
127 | ||
00782136 | 128 | if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) { |
5129dffe | 129 | sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret); |
3c4d3868 LC |
130 | dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n", |
131 | addr, ((u8 *)buf)[0]); | |
5129dffe | 132 | } else { |
3c4d3868 LC |
133 | dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n", |
134 | addr, len); | |
5129dffe TP |
135 | |
136 | if (fixed) | |
137 | ret = sdio_writesb(func, addr, buf, len); | |
138 | else | |
139 | ret = sdio_memcpy_toio(func, addr, buf, len); | |
140 | } | |
49063a0d | 141 | |
b4748306 EP |
142 | sdio_release_host(func); |
143 | ||
02eb1d9d | 144 | if (WARN_ON(ret)) |
3c4d3868 | 145 | dev_err(child->parent, "sdio write failed (%d)\n", ret); |
02eb1d9d IY |
146 | |
147 | return ret; | |
49063a0d OBC |
148 | } |
149 | ||
a390e85c | 150 | static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue) |
49063a0d | 151 | { |
00cbb3c5 | 152 | int ret; |
fbe936bc | 153 | struct sdio_func *func = dev_to_sdio_func(glue->dev); |
645865fc IY |
154 | struct mmc_card *card = func->card; |
155 | ||
156 | ret = pm_runtime_get_sync(&card->dev); | |
157 | if (ret) { | |
158 | /* | |
159 | * Runtime PM might be temporarily disabled, or the device | |
160 | * might have a positive reference counter. Make sure it is | |
161 | * really powered on. | |
162 | */ | |
163 | ret = mmc_power_restore_host(card->host); | |
164 | if (ret < 0) { | |
165 | pm_runtime_put_sync(&card->dev); | |
b5d6e5f6 | 166 | goto out; |
645865fc | 167 | } |
86046da4 | 168 | } |
5129dffe | 169 | |
49063a0d OBC |
170 | sdio_claim_host(func); |
171 | sdio_enable_func(func); | |
b4748306 | 172 | sdio_release_host(func); |
2cc78ff7 | 173 | |
00cbb3c5 OBC |
174 | out: |
175 | return ret; | |
49063a0d OBC |
176 | } |
177 | ||
a390e85c | 178 | static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue) |
49063a0d | 179 | { |
11251e7e | 180 | int ret; |
fbe936bc | 181 | struct sdio_func *func = dev_to_sdio_func(glue->dev); |
645865fc | 182 | struct mmc_card *card = func->card; |
49063a0d | 183 | |
b4748306 | 184 | sdio_claim_host(func); |
49063a0d OBC |
185 | sdio_disable_func(func); |
186 | sdio_release_host(func); | |
2cc78ff7 | 187 | |
645865fc IY |
188 | /* Power off the card manually in case it wasn't powered off above */ |
189 | ret = mmc_power_save_host(card->host); | |
11251e7e | 190 | if (ret < 0) |
645865fc | 191 | goto out; |
11251e7e | 192 | |
645865fc IY |
193 | /* Let runtime PM know the card is powered off */ |
194 | pm_runtime_put_sync(&card->dev); | |
86046da4 | 195 | |
645865fc | 196 | out: |
86046da4 | 197 | return ret; |
5129dffe TP |
198 | } |
199 | ||
a390e85c | 200 | static int wl12xx_sdio_set_power(struct device *child, bool enable) |
becd551c | 201 | { |
a390e85c FB |
202 | struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent); |
203 | ||
49063a0d | 204 | if (enable) |
a390e85c | 205 | return wl12xx_sdio_power_on(glue); |
49063a0d | 206 | else |
a390e85c | 207 | return wl12xx_sdio_power_off(glue); |
becd551c TP |
208 | } |
209 | ||
5129dffe | 210 | static struct wl1271_if_operations sdio_ops = { |
a390e85c FB |
211 | .read = wl12xx_sdio_raw_read, |
212 | .write = wl12xx_sdio_raw_write, | |
213 | .power = wl12xx_sdio_set_power, | |
a81159ed | 214 | .set_block_size = wl1271_sdio_set_block_size, |
5129dffe TP |
215 | }; |
216 | ||
5129dffe TP |
217 | static int __devinit wl1271_probe(struct sdio_func *func, |
218 | const struct sdio_device_id *id) | |
219 | { | |
a390e85c | 220 | struct wl12xx_platform_data *wlan_data; |
fbe936bc | 221 | struct wl12xx_sdio_glue *glue; |
025aef8f | 222 | struct resource res[1]; |
f795ea8b | 223 | mmc_pm_flag_t mmcflags; |
fbe936bc | 224 | int ret = -ENOMEM; |
197c6283 | 225 | const char *chip_family; |
5129dffe TP |
226 | |
227 | /* We are only able to handle the wlan function */ | |
228 | if (func->num != 0x02) | |
229 | return -ENODEV; | |
230 | ||
fbe936bc FB |
231 | glue = kzalloc(sizeof(*glue), GFP_KERNEL); |
232 | if (!glue) { | |
3c4d3868 | 233 | dev_err(&func->dev, "can't allocate glue\n"); |
fbe936bc FB |
234 | goto out; |
235 | } | |
236 | ||
fbe936bc | 237 | glue->dev = &func->dev; |
5129dffe | 238 | |
5129dffe TP |
239 | /* Grab access to FN0 for ELP reg. */ |
240 | func->card->quirks |= MMC_QUIRK_LENIENT_FN0; | |
241 | ||
1d732e8c AN |
242 | /* Use block mode for transferring over one block size of data */ |
243 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; | |
244 | ||
09cecc34 OBC |
245 | wlan_data = wl12xx_get_platform_data(); |
246 | if (IS_ERR(wlan_data)) { | |
247 | ret = PTR_ERR(wlan_data); | |
3c4d3868 | 248 | dev_err(glue->dev, "missing wlan platform data: %d\n", ret); |
a390e85c | 249 | goto out_free_glue; |
5129dffe TP |
250 | } |
251 | ||
a390e85c FB |
252 | /* if sdio can keep power while host is suspended, enable wow */ |
253 | mmcflags = sdio_get_host_pm_caps(func); | |
3c4d3868 | 254 | dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags); |
2c0f2463 | 255 | |
a390e85c FB |
256 | if (mmcflags & MMC_PM_KEEP_POWER) |
257 | wlan_data->pwr_in_suspend = true; | |
f795ea8b | 258 | |
a390e85c | 259 | wlan_data->ops = &sdio_ops; |
5129dffe | 260 | |
fbe936bc | 261 | sdio_set_drvdata(func, glue); |
49d7f6d8 | 262 | |
00cbb3c5 OBC |
263 | /* Tell PM core that we don't need the card to be powered now */ |
264 | pm_runtime_put_noidle(&func->dev); | |
265 | ||
197c6283 LC |
266 | /* |
267 | * Due to a hardware bug, we can't differentiate wl18xx from | |
268 | * wl12xx, because both report the same device ID. The only | |
269 | * way to differentiate is by checking the SDIO revision, | |
270 | * which is 3.00 on the wl18xx chips. | |
271 | */ | |
272 | if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00) | |
273 | chip_family = "wl18xx"; | |
274 | else | |
275 | chip_family = "wl12xx"; | |
276 | ||
277 | glue->core = platform_device_alloc(chip_family, -1); | |
025aef8f | 278 | if (!glue->core) { |
3c4d3868 | 279 | dev_err(glue->dev, "can't allocate platform_device"); |
025aef8f | 280 | ret = -ENOMEM; |
a390e85c | 281 | goto out_free_glue; |
025aef8f FB |
282 | } |
283 | ||
284 | glue->core->dev.parent = &func->dev; | |
285 | ||
286 | memset(res, 0x00, sizeof(res)); | |
287 | ||
288 | res[0].start = wlan_data->irq; | |
289 | res[0].flags = IORESOURCE_IRQ; | |
290 | res[0].name = "irq"; | |
291 | ||
292 | ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res)); | |
293 | if (ret) { | |
3c4d3868 | 294 | dev_err(glue->dev, "can't add resources\n"); |
025aef8f FB |
295 | goto out_dev_put; |
296 | } | |
297 | ||
298 | ret = platform_device_add_data(glue->core, wlan_data, | |
299 | sizeof(*wlan_data)); | |
300 | if (ret) { | |
3c4d3868 | 301 | dev_err(glue->dev, "can't add platform data\n"); |
025aef8f FB |
302 | goto out_dev_put; |
303 | } | |
304 | ||
305 | ret = platform_device_add(glue->core); | |
306 | if (ret) { | |
3c4d3868 | 307 | dev_err(glue->dev, "can't add platform device\n"); |
025aef8f FB |
308 | goto out_dev_put; |
309 | } | |
5129dffe TP |
310 | return 0; |
311 | ||
025aef8f FB |
312 | out_dev_put: |
313 | platform_device_put(glue->core); | |
314 | ||
fbe936bc FB |
315 | out_free_glue: |
316 | kfree(glue); | |
a390e85c | 317 | |
fbe936bc | 318 | out: |
5129dffe TP |
319 | return ret; |
320 | } | |
321 | ||
322 | static void __devexit wl1271_remove(struct sdio_func *func) | |
323 | { | |
fbe936bc | 324 | struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func); |
5129dffe | 325 | |
00cbb3c5 OBC |
326 | /* Undo decrement done above in wl1271_probe */ |
327 | pm_runtime_get_noresume(&func->dev); | |
328 | ||
025aef8f FB |
329 | platform_device_del(glue->core); |
330 | platform_device_put(glue->core); | |
fbe936bc | 331 | kfree(glue); |
5129dffe TP |
332 | } |
333 | ||
f634a4e7 | 334 | #ifdef CONFIG_PM |
674f3058 OBC |
335 | static int wl1271_suspend(struct device *dev) |
336 | { | |
337 | /* Tell MMC/SDIO core it's OK to power down the card | |
338 | * (if it isn't already), but not to remove it completely */ | |
039bdb14 | 339 | struct sdio_func *func = dev_to_sdio_func(dev); |
b6932894 ES |
340 | struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func); |
341 | struct wl1271 *wl = platform_get_drvdata(glue->core); | |
039bdb14 EP |
342 | mmc_pm_flag_t sdio_flags; |
343 | int ret = 0; | |
344 | ||
3c4d3868 LC |
345 | dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n", |
346 | wl->wow_enabled); | |
039bdb14 EP |
347 | |
348 | /* check whether sdio should keep power */ | |
349 | if (wl->wow_enabled) { | |
350 | sdio_flags = sdio_get_host_pm_caps(func); | |
351 | ||
352 | if (!(sdio_flags & MMC_PM_KEEP_POWER)) { | |
3c4d3868 LC |
353 | dev_err(dev, "can't keep power while host " |
354 | "is suspended\n"); | |
039bdb14 EP |
355 | ret = -EINVAL; |
356 | goto out; | |
357 | } | |
358 | ||
359 | /* keep power while host suspended */ | |
360 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
361 | if (ret) { | |
3c4d3868 | 362 | dev_err(dev, "error while trying to keep power\n"); |
039bdb14 EP |
363 | goto out; |
364 | } | |
365 | } | |
366 | out: | |
367 | return ret; | |
674f3058 OBC |
368 | } |
369 | ||
370 | static int wl1271_resume(struct device *dev) | |
371 | { | |
3c4d3868 | 372 | dev_dbg(dev, "wl1271 resume\n"); |
f44e5868 | 373 | |
674f3058 OBC |
374 | return 0; |
375 | } | |
376 | ||
377 | static const struct dev_pm_ops wl1271_sdio_pm_ops = { | |
378 | .suspend = wl1271_suspend, | |
379 | .resume = wl1271_resume, | |
380 | }; | |
f634a4e7 | 381 | #endif |
674f3058 | 382 | |
5129dffe | 383 | static struct sdio_driver wl1271_sdio_driver = { |
f4b5d8d8 | 384 | .name = "wl1271_sdio", |
5129dffe TP |
385 | .id_table = wl1271_devices, |
386 | .probe = wl1271_probe, | |
387 | .remove = __devexit_p(wl1271_remove), | |
f634a4e7 | 388 | #ifdef CONFIG_PM |
674f3058 OBC |
389 | .drv = { |
390 | .pm = &wl1271_sdio_pm_ops, | |
391 | }, | |
f634a4e7 | 392 | #endif |
5129dffe TP |
393 | }; |
394 | ||
395 | static int __init wl1271_init(void) | |
396 | { | |
6bdaf796 | 397 | return sdio_register_driver(&wl1271_sdio_driver); |
5129dffe TP |
398 | } |
399 | ||
400 | static void __exit wl1271_exit(void) | |
401 | { | |
402 | sdio_unregister_driver(&wl1271_sdio_driver); | |
5129dffe TP |
403 | } |
404 | ||
405 | module_init(wl1271_init); | |
406 | module_exit(wl1271_exit); | |
407 | ||
df472894 LC |
408 | module_param(dump, bool, S_IRUSR | S_IWUSR); |
409 | MODULE_PARM_DESC(dump, "Enable sdio read/write dumps."); | |
410 | ||
5129dffe | 411 | MODULE_LICENSE("GPL"); |
5245e3a9 | 412 | MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>"); |
5129dffe | 413 | MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>"); |