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