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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>
26#include <linux/vmalloc.h>
27#include <linux/platform_device.h>
28#include <linux/mmc/sdio.h>
29#include <linux/mmc/sdio_func.h>
30#include <linux/mmc/sdio_ids.h>
31#include <linux/mmc/card.h>
32#include <linux/mmc/host.h>
33#include <linux/gpio.h>
34#include <linux/pm_runtime.h>
35#include <linux/printk.h>
36#include <linux/of.h>
37#include <linux/of_irq.h>
38
39#include "wlcore.h"
40#include "wl12xx_80211.h"
41#include "io.h"
42
43#ifndef SDIO_VENDOR_ID_TI
44#define SDIO_VENDOR_ID_TI 0x0097
45#endif
46
47#ifndef SDIO_DEVICE_ID_TI_WL1271
48#define SDIO_DEVICE_ID_TI_WL1271 0x4076
49#endif
50
51static bool dump = false;
52
53struct wl12xx_sdio_glue {
54 struct device *dev;
55 struct platform_device *core;
56};
57
58static const struct sdio_device_id wl1271_devices[] = {
59 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
60 {}
61};
62MODULE_DEVICE_TABLE(sdio, wl1271_devices);
63
64static void wl1271_sdio_set_block_size(struct device *child,
65 unsigned int blksz)
66{
67 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
68 struct sdio_func *func = dev_to_sdio_func(glue->dev);
69
70 sdio_claim_host(func);
71 sdio_set_block_size(func, blksz);
72 sdio_release_host(func);
73}
74
75static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
76 void *buf, size_t len, bool fixed)
77{
78 int ret;
79 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
80 struct sdio_func *func = dev_to_sdio_func(glue->dev);
81
82 sdio_claim_host(func);
83
84 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
85 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
86 dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
87 addr, ((u8 *)buf)[0]);
88 } else {
89 if (fixed)
90 ret = sdio_readsb(func, buf, addr, len);
91 else
92 ret = sdio_memcpy_fromio(func, buf, addr, len);
93
94 dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
95 addr, len);
96 }
97
98 sdio_release_host(func);
99
100 if (WARN_ON(ret))
101 dev_err(child->parent, "sdio read failed (%d)\n", ret);
102
103 if (unlikely(dump)) {
104 printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
105 print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
106 DUMP_PREFIX_OFFSET, 16, 1,
107 buf, len, false);
108 }
109
110 return ret;
111}
112
113static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
114 void *buf, size_t len, bool fixed)
115{
116 int ret;
117 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
118 struct sdio_func *func = dev_to_sdio_func(glue->dev);
119
120 sdio_claim_host(func);
121
122 if (unlikely(dump)) {
123 printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
124 print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
125 DUMP_PREFIX_OFFSET, 16, 1,
126 buf, len, false);
127 }
128
129 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
130 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
131 dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
132 addr, ((u8 *)buf)[0]);
133 } else {
134 dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
135 addr, len);
136
137 if (fixed)
138 ret = sdio_writesb(func, addr, buf, len);
139 else
140 ret = sdio_memcpy_toio(func, addr, buf, len);
141 }
142
143 sdio_release_host(func);
144
145 if (WARN_ON(ret))
146 dev_err(child->parent, "sdio write failed (%d)\n", ret);
147
148 return ret;
149}
150
151static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
152{
153 int ret;
154 struct sdio_func *func = dev_to_sdio_func(glue->dev);
155 struct mmc_card *card = func->card;
156
157 ret = pm_runtime_get_sync(&card->dev);
158 if (ret) {
159 /*
160 * Runtime PM might be temporarily disabled, or the device
161 * might have a positive reference counter. Make sure it is
162 * really powered on.
163 */
164 ret = mmc_power_restore_host(card->host);
165 if (ret < 0) {
166 pm_runtime_put_sync(&card->dev);
167 goto out;
168 }
169 }
170
171 sdio_claim_host(func);
172 sdio_enable_func(func);
173 sdio_release_host(func);
174
175out:
176 return ret;
177}
178
179static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
180{
181 int ret;
182 struct sdio_func *func = dev_to_sdio_func(glue->dev);
183 struct mmc_card *card = func->card;
184
185 sdio_claim_host(func);
186 sdio_disable_func(func);
187 sdio_release_host(func);
188
189 /* Power off the card manually in case it wasn't powered off above */
190 ret = mmc_power_save_host(card->host);
191 if (ret < 0)
192 goto out;
193
194 /* Let runtime PM know the card is powered off */
195 pm_runtime_put_sync(&card->dev);
196
197out:
198 return ret;
199}
200
201static int wl12xx_sdio_set_power(struct device *child, bool enable)
202{
203 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
204
205 if (enable)
206 return wl12xx_sdio_power_on(glue);
207 else
208 return wl12xx_sdio_power_off(glue);
209}
210
211static struct wl1271_if_operations sdio_ops = {
212 .read = wl12xx_sdio_raw_read,
213 .write = wl12xx_sdio_raw_write,
214 .power = wl12xx_sdio_set_power,
215 .set_block_size = wl1271_sdio_set_block_size,
216};
217
218#ifdef CONFIG_OF
219
220static const struct wilink_family_data wl127x_data = {
221 .name = "wl127x",
222 .nvs_name = "ti-connectivity/wl127x-nvs.bin",
223};
224
225static const struct wilink_family_data wl128x_data = {
226 .name = "wl128x",
227 .nvs_name = "ti-connectivity/wl128x-nvs.bin",
228};
229
230static const struct wilink_family_data wl18xx_data = {
231 .name = "wl18xx",
232 .cfg_name = "ti-connectivity/wl18xx-conf.bin",
233 .nvs_name = "ti-connectivity/wl1271-nvs.bin",
234};
235
236static const struct of_device_id wlcore_sdio_of_match_table[] = {
237 { .compatible = "ti,wl1271", .data = &wl127x_data },
238 { .compatible = "ti,wl1273", .data = &wl127x_data },
239 { .compatible = "ti,wl1281", .data = &wl128x_data },
240 { .compatible = "ti,wl1283", .data = &wl128x_data },
241 { .compatible = "ti,wl1285", .data = &wl128x_data },
242 { .compatible = "ti,wl1801", .data = &wl18xx_data },
243 { .compatible = "ti,wl1805", .data = &wl18xx_data },
244 { .compatible = "ti,wl1807", .data = &wl18xx_data },
245 { .compatible = "ti,wl1831", .data = &wl18xx_data },
246 { .compatible = "ti,wl1835", .data = &wl18xx_data },
247 { .compatible = "ti,wl1837", .data = &wl18xx_data },
248 { }
249};
250
251static int wlcore_probe_of(struct device *dev, int *irq,
252 struct wlcore_platdev_data *pdev_data)
253{
254 struct device_node *np = dev->of_node;
255 const struct of_device_id *of_id;
256
257 of_id = of_match_node(wlcore_sdio_of_match_table, np);
258 if (!of_id)
259 return -ENODEV;
260
261 pdev_data->family = of_id->data;
262
263 *irq = irq_of_parse_and_map(np, 0);
264 if (!*irq) {
265 dev_err(dev, "No irq in platform data\n");
266 return -EINVAL;
267 }
268
269 /* optional clock frequency params */
270 of_property_read_u32(np, "ref-clock-frequency",
271 &pdev_data->ref_clock_freq);
272 of_property_read_u32(np, "tcxo-clock-frequency",
273 &pdev_data->tcxo_clock_freq);
274
275 return 0;
276}
277#else
278static int wlcore_probe_of(struct device *dev, int *irq,
279 struct wlcore_platdev_data *pdev_data)
280{
281 return -ENODATA;
282}
283#endif
284
285static int wl1271_probe(struct sdio_func *func,
286 const struct sdio_device_id *id)
287{
288 struct wlcore_platdev_data *pdev_data;
289 struct wl12xx_sdio_glue *glue;
290 struct resource res[1];
291 mmc_pm_flag_t mmcflags;
292 int ret = -ENOMEM;
293 int irq;
294 const char *chip_family;
295
296 /* We are only able to handle the wlan function */
297 if (func->num != 0x02)
298 return -ENODEV;
299
300 pdev_data = devm_kzalloc(&func->dev, sizeof(*pdev_data), GFP_KERNEL);
301 if (!pdev_data)
302 return -ENOMEM;
303
304 pdev_data->if_ops = &sdio_ops;
305
306 glue = devm_kzalloc(&func->dev, sizeof(*glue), GFP_KERNEL);
307 if (!glue)
308 return -ENOMEM;
309
310 glue->dev = &func->dev;
311
312 /* Grab access to FN0 for ELP reg. */
313 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
314
315 /* Use block mode for transferring over one block size of data */
316 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
317
318 ret = wlcore_probe_of(&func->dev, &irq, pdev_data);
319 if (ret)
320 goto out;
321
322 /* if sdio can keep power while host is suspended, enable wow */
323 mmcflags = sdio_get_host_pm_caps(func);
324 dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
325
326 if (mmcflags & MMC_PM_KEEP_POWER)
327 pdev_data->pwr_in_suspend = true;
328
329 sdio_set_drvdata(func, glue);
330
331 /* Tell PM core that we don't need the card to be powered now */
332 pm_runtime_put_noidle(&func->dev);
333
334 /*
335 * Due to a hardware bug, we can't differentiate wl18xx from
336 * wl12xx, because both report the same device ID. The only
337 * way to differentiate is by checking the SDIO revision,
338 * which is 3.00 on the wl18xx chips.
339 */
340 if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
341 chip_family = "wl18xx";
342 else
343 chip_family = "wl12xx";
344
345 glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
346 if (!glue->core) {
347 dev_err(glue->dev, "can't allocate platform_device");
348 ret = -ENOMEM;
349 goto out;
350 }
351
352 glue->core->dev.parent = &func->dev;
353
354 memset(res, 0x00, sizeof(res));
355
356 res[0].start = irq;
357 res[0].flags = IORESOURCE_IRQ |
358 irqd_get_trigger_type(irq_get_irq_data(irq));
359 res[0].name = "irq";
360
361 ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
362 if (ret) {
363 dev_err(glue->dev, "can't add resources\n");
364 goto out_dev_put;
365 }
366
367 ret = platform_device_add_data(glue->core, pdev_data,
368 sizeof(*pdev_data));
369 if (ret) {
370 dev_err(glue->dev, "can't add platform data\n");
371 goto out_dev_put;
372 }
373
374 ret = platform_device_add(glue->core);
375 if (ret) {
376 dev_err(glue->dev, "can't add platform device\n");
377 goto out_dev_put;
378 }
379 return 0;
380
381out_dev_put:
382 platform_device_put(glue->core);
383
384out:
385 return ret;
386}
387
388static void wl1271_remove(struct sdio_func *func)
389{
390 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
391
392 /* Undo decrement done above in wl1271_probe */
393 pm_runtime_get_noresume(&func->dev);
394
395 platform_device_unregister(glue->core);
396}
397
398#ifdef CONFIG_PM
399static int wl1271_suspend(struct device *dev)
400{
401 /* Tell MMC/SDIO core it's OK to power down the card
402 * (if it isn't already), but not to remove it completely */
403 struct sdio_func *func = dev_to_sdio_func(dev);
404 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
405 struct wl1271 *wl = platform_get_drvdata(glue->core);
406 mmc_pm_flag_t sdio_flags;
407 int ret = 0;
408
409 dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
410 wl->wow_enabled);
411
412 /* check whether sdio should keep power */
413 if (wl->wow_enabled) {
414 sdio_flags = sdio_get_host_pm_caps(func);
415
416 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
417 dev_err(dev, "can't keep power while host "
418 "is suspended\n");
419 ret = -EINVAL;
420 goto out;
421 }
422
423 /* keep power while host suspended */
424 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
425 if (ret) {
426 dev_err(dev, "error while trying to keep power\n");
427 goto out;
428 }
429 }
430out:
431 return ret;
432}
433
434static int wl1271_resume(struct device *dev)
435{
436 dev_dbg(dev, "wl1271 resume\n");
437
438 return 0;
439}
440
441static const struct dev_pm_ops wl1271_sdio_pm_ops = {
442 .suspend = wl1271_suspend,
443 .resume = wl1271_resume,
444};
445#endif
446
447static struct sdio_driver wl1271_sdio_driver = {
448 .name = "wl1271_sdio",
449 .id_table = wl1271_devices,
450 .probe = wl1271_probe,
451 .remove = wl1271_remove,
452#ifdef CONFIG_PM
453 .drv = {
454 .pm = &wl1271_sdio_pm_ops,
455 },
456#endif
457};
458
459static int __init wl1271_init(void)
460{
461 return sdio_register_driver(&wl1271_sdio_driver);
462}
463
464static void __exit wl1271_exit(void)
465{
466 sdio_unregister_driver(&wl1271_sdio_driver);
467}
468
469module_init(wl1271_init);
470module_exit(wl1271_exit);
471
472module_param(dump, bool, 0600);
473MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
474
475MODULE_LICENSE("GPL");
476MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
477MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file is part of wl1271
4 *
5 * Copyright (C) 2009-2010 Nokia Corporation
6 *
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 */
9
10#include <linux/irq.h>
11#include <linux/module.h>
12#include <linux/vmalloc.h>
13#include <linux/platform_device.h>
14#include <linux/mmc/sdio.h>
15#include <linux/mmc/sdio_func.h>
16#include <linux/mmc/sdio_ids.h>
17#include <linux/mmc/card.h>
18#include <linux/mmc/host.h>
19#include <linux/pm_runtime.h>
20#include <linux/printk.h>
21#include <linux/of.h>
22#include <linux/of_irq.h>
23
24#include "wlcore.h"
25#include "wl12xx_80211.h"
26#include "io.h"
27
28static bool dump;
29
30struct wl12xx_sdio_glue {
31 struct device *dev;
32 struct platform_device *core;
33};
34
35static const struct sdio_device_id wl1271_devices[] = {
36 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
37 {}
38};
39MODULE_DEVICE_TABLE(sdio, wl1271_devices);
40
41static void wl1271_sdio_set_block_size(struct device *child,
42 unsigned int blksz)
43{
44 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
45 struct sdio_func *func = dev_to_sdio_func(glue->dev);
46
47 sdio_claim_host(func);
48 sdio_set_block_size(func, blksz);
49 sdio_release_host(func);
50}
51
52static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
53 void *buf, size_t len, bool fixed)
54{
55 int ret;
56 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
57 struct sdio_func *func = dev_to_sdio_func(glue->dev);
58
59 sdio_claim_host(func);
60
61 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
62 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
63 dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
64 addr, ((u8 *)buf)[0]);
65 } else {
66 if (fixed)
67 ret = sdio_readsb(func, buf, addr, len);
68 else
69 ret = sdio_memcpy_fromio(func, buf, addr, len);
70
71 dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
72 addr, len);
73 }
74
75 sdio_release_host(func);
76
77 if (ret)
78 dev_err_ratelimited(child->parent, "sdio read failed (%d)\n", ret);
79
80 if (unlikely(dump)) {
81 printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
82 print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
83 DUMP_PREFIX_OFFSET, 16, 1,
84 buf, len, false);
85 }
86
87 return ret;
88}
89
90static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
91 void *buf, size_t len, bool fixed)
92{
93 int ret;
94 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
95 struct sdio_func *func = dev_to_sdio_func(glue->dev);
96
97 sdio_claim_host(func);
98
99 if (unlikely(dump)) {
100 printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
101 print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
102 DUMP_PREFIX_OFFSET, 16, 1,
103 buf, len, false);
104 }
105
106 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
107 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
108 dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
109 addr, ((u8 *)buf)[0]);
110 } else {
111 dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
112 addr, len);
113
114 if (fixed)
115 ret = sdio_writesb(func, addr, buf, len);
116 else
117 ret = sdio_memcpy_toio(func, addr, buf, len);
118 }
119
120 sdio_release_host(func);
121
122 if (ret)
123 dev_err_ratelimited(child->parent, "sdio write failed (%d)\n", ret);
124
125 return ret;
126}
127
128static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
129{
130 int ret;
131 struct sdio_func *func = dev_to_sdio_func(glue->dev);
132 struct mmc_card *card = func->card;
133
134 ret = pm_runtime_resume_and_get(&card->dev);
135 if (ret < 0) {
136 dev_err(glue->dev, "%s: failed to get_sync(%d)\n",
137 __func__, ret);
138
139 return ret;
140 }
141
142 sdio_claim_host(func);
143 /*
144 * To guarantee that the SDIO card is power cycled, as required to make
145 * the FW programming to succeed, let's do a brute force HW reset.
146 */
147 mmc_hw_reset(card);
148
149 sdio_enable_func(func);
150 sdio_release_host(func);
151
152 return 0;
153}
154
155static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
156{
157 struct sdio_func *func = dev_to_sdio_func(glue->dev);
158 struct mmc_card *card = func->card;
159
160 sdio_claim_host(func);
161 sdio_disable_func(func);
162 sdio_release_host(func);
163
164 /* Let runtime PM know the card is powered off */
165 pm_runtime_put(&card->dev);
166 return 0;
167}
168
169static int wl12xx_sdio_set_power(struct device *child, bool enable)
170{
171 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
172
173 if (enable)
174 return wl12xx_sdio_power_on(glue);
175 else
176 return wl12xx_sdio_power_off(glue);
177}
178
179static struct wl1271_if_operations sdio_ops = {
180 .read = wl12xx_sdio_raw_read,
181 .write = wl12xx_sdio_raw_write,
182 .power = wl12xx_sdio_set_power,
183 .set_block_size = wl1271_sdio_set_block_size,
184};
185
186#ifdef CONFIG_OF
187
188static const struct wilink_family_data wl127x_data = {
189 .name = "wl127x",
190 .nvs_name = "ti-connectivity/wl127x-nvs.bin",
191};
192
193static const struct wilink_family_data wl128x_data = {
194 .name = "wl128x",
195 .nvs_name = "ti-connectivity/wl128x-nvs.bin",
196};
197
198static const struct wilink_family_data wl18xx_data = {
199 .name = "wl18xx",
200 .cfg_name = "ti-connectivity/wl18xx-conf.bin",
201 .nvs_name = "ti-connectivity/wl1271-nvs.bin",
202};
203
204static const struct of_device_id wlcore_sdio_of_match_table[] = {
205 { .compatible = "ti,wl1271", .data = &wl127x_data },
206 { .compatible = "ti,wl1273", .data = &wl127x_data },
207 { .compatible = "ti,wl1281", .data = &wl128x_data },
208 { .compatible = "ti,wl1283", .data = &wl128x_data },
209 { .compatible = "ti,wl1285", .data = &wl128x_data },
210 { .compatible = "ti,wl1801", .data = &wl18xx_data },
211 { .compatible = "ti,wl1805", .data = &wl18xx_data },
212 { .compatible = "ti,wl1807", .data = &wl18xx_data },
213 { .compatible = "ti,wl1831", .data = &wl18xx_data },
214 { .compatible = "ti,wl1835", .data = &wl18xx_data },
215 { .compatible = "ti,wl1837", .data = &wl18xx_data },
216 { }
217};
218
219static int wlcore_probe_of(struct device *dev, int *irq, int *wakeirq,
220 struct wlcore_platdev_data *pdev_data)
221{
222 struct device_node *np = dev->of_node;
223 const struct of_device_id *of_id;
224
225 of_id = of_match_node(wlcore_sdio_of_match_table, np);
226 if (!of_id)
227 return -ENODEV;
228
229 pdev_data->family = of_id->data;
230
231 *irq = irq_of_parse_and_map(np, 0);
232 if (!*irq) {
233 dev_err(dev, "No irq in platform data\n");
234 return -EINVAL;
235 }
236
237 *wakeirq = irq_of_parse_and_map(np, 1);
238
239 /* optional clock frequency params */
240 of_property_read_u32(np, "ref-clock-frequency",
241 &pdev_data->ref_clock_freq);
242 of_property_read_u32(np, "tcxo-clock-frequency",
243 &pdev_data->tcxo_clock_freq);
244
245 return 0;
246}
247#else
248static int wlcore_probe_of(struct device *dev, int *irq, int *wakeirq,
249 struct wlcore_platdev_data *pdev_data)
250{
251 return -ENODATA;
252}
253#endif
254
255static int wl1271_probe(struct sdio_func *func,
256 const struct sdio_device_id *id)
257{
258 struct wlcore_platdev_data *pdev_data;
259 struct wl12xx_sdio_glue *glue;
260 struct resource res[2];
261 mmc_pm_flag_t mmcflags;
262 int ret = -ENOMEM;
263 int irq, wakeirq, num_irqs;
264 const char *chip_family;
265
266 /* We are only able to handle the wlan function */
267 if (func->num != 0x02)
268 return -ENODEV;
269
270 pdev_data = devm_kzalloc(&func->dev, sizeof(*pdev_data), GFP_KERNEL);
271 if (!pdev_data)
272 return -ENOMEM;
273
274 pdev_data->if_ops = &sdio_ops;
275
276 glue = devm_kzalloc(&func->dev, sizeof(*glue), GFP_KERNEL);
277 if (!glue)
278 return -ENOMEM;
279
280 glue->dev = &func->dev;
281
282 /* Grab access to FN0 for ELP reg. */
283 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
284
285 /* Use block mode for transferring over one block size of data */
286 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
287
288 ret = wlcore_probe_of(&func->dev, &irq, &wakeirq, pdev_data);
289 if (ret)
290 goto out;
291
292 /* if sdio can keep power while host is suspended, enable wow */
293 mmcflags = sdio_get_host_pm_caps(func);
294 dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
295
296 if (mmcflags & MMC_PM_KEEP_POWER)
297 pdev_data->pwr_in_suspend = true;
298
299 sdio_set_drvdata(func, glue);
300
301 /* Tell PM core that we don't need the card to be powered now */
302 pm_runtime_put_noidle(&func->dev);
303
304 /*
305 * Due to a hardware bug, we can't differentiate wl18xx from
306 * wl12xx, because both report the same device ID. The only
307 * way to differentiate is by checking the SDIO revision,
308 * which is 3.00 on the wl18xx chips.
309 */
310 if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
311 chip_family = "wl18xx";
312 else
313 chip_family = "wl12xx";
314
315 glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
316 if (!glue->core) {
317 dev_err(glue->dev, "can't allocate platform_device");
318 ret = -ENOMEM;
319 goto out;
320 }
321
322 glue->core->dev.parent = &func->dev;
323
324 memset(res, 0x00, sizeof(res));
325
326 res[0] = DEFINE_RES_IRQ_NAMED(irq, "irq");
327 res[0].flags |= irq_get_trigger_type(irq);
328
329 if (wakeirq > 0) {
330 res[1] = DEFINE_RES_IRQ_NAMED(wakeirq, "wakeirq");
331 res[1].flags |= irq_get_trigger_type(wakeirq);
332 num_irqs = 2;
333 } else {
334 num_irqs = 1;
335 }
336 ret = platform_device_add_resources(glue->core, res, num_irqs);
337 if (ret) {
338 dev_err(glue->dev, "can't add resources\n");
339 goto out_dev_put;
340 }
341
342 ret = platform_device_add_data(glue->core, pdev_data,
343 sizeof(*pdev_data));
344 if (ret) {
345 dev_err(glue->dev, "can't add platform data\n");
346 goto out_dev_put;
347 }
348
349 ret = platform_device_add(glue->core);
350 if (ret) {
351 dev_err(glue->dev, "can't add platform device\n");
352 goto out_dev_put;
353 }
354 return 0;
355
356out_dev_put:
357 platform_device_put(glue->core);
358
359out:
360 return ret;
361}
362
363static void wl1271_remove(struct sdio_func *func)
364{
365 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
366
367 /* Undo decrement done above in wl1271_probe */
368 pm_runtime_get_noresume(&func->dev);
369
370 platform_device_unregister(glue->core);
371}
372
373#ifdef CONFIG_PM
374static int wl1271_suspend(struct device *dev)
375{
376 /* Tell MMC/SDIO core it's OK to power down the card
377 * (if it isn't already), but not to remove it completely */
378 struct sdio_func *func = dev_to_sdio_func(dev);
379 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
380 struct wl1271 *wl = platform_get_drvdata(glue->core);
381 mmc_pm_flag_t sdio_flags;
382 int ret = 0;
383
384 if (!wl) {
385 dev_err(dev, "no wilink module was probed\n");
386 goto out;
387 }
388
389 dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
390 wl->wow_enabled);
391
392 /* check whether sdio should keep power */
393 if (wl->wow_enabled) {
394 sdio_flags = sdio_get_host_pm_caps(func);
395
396 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
397 dev_err(dev, "can't keep power while host "
398 "is suspended\n");
399 ret = -EINVAL;
400 goto out;
401 }
402
403 /* keep power while host suspended */
404 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
405 if (ret) {
406 dev_err(dev, "error while trying to keep power\n");
407 goto out;
408 }
409 }
410out:
411 return ret;
412}
413
414static int wl1271_resume(struct device *dev)
415{
416 dev_dbg(dev, "wl1271 resume\n");
417
418 return 0;
419}
420
421static const struct dev_pm_ops wl1271_sdio_pm_ops = {
422 .suspend = wl1271_suspend,
423 .resume = wl1271_resume,
424};
425#endif
426
427static struct sdio_driver wl1271_sdio_driver = {
428 .name = "wl1271_sdio",
429 .id_table = wl1271_devices,
430 .probe = wl1271_probe,
431 .remove = wl1271_remove,
432#ifdef CONFIG_PM
433 .drv = {
434 .pm = &wl1271_sdio_pm_ops,
435 },
436#endif
437};
438
439module_sdio_driver(wl1271_sdio_driver);
440
441module_param(dump, bool, 0600);
442MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
443
444MODULE_DESCRIPTION("TI WLAN SDIO helpers");
445MODULE_LICENSE("GPL");
446MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
447MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");