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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 = false;
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_get_sync(&card->dev);
136 if (ret < 0) {
137 pm_runtime_put_noidle(&card->dev);
138 dev_err(glue->dev, "%s: failed to get_sync(%d)\n",
139 __func__, ret);
140
141 return ret;
142 }
143
144 sdio_claim_host(func);
145
146
147
148
149 mmc_hw_reset(card->host);
150
151 sdio_enable_func(func);
152 sdio_release_host(func);
153
154 return 0;
155}
156
157static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
158{
159 struct sdio_func *func = dev_to_sdio_func(glue->dev);
160 struct mmc_card *card = func->card;
161
162 sdio_claim_host(func);
163 sdio_disable_func(func);
164 sdio_release_host(func);
165
166
167 pm_runtime_put(&card->dev);
168 return 0;
169}
170
171static int wl12xx_sdio_set_power(struct device *child, bool enable)
172{
173 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
174
175 if (enable)
176 return wl12xx_sdio_power_on(glue);
177 else
178 return wl12xx_sdio_power_off(glue);
179}
180
181static struct wl1271_if_operations sdio_ops = {
182 .read = wl12xx_sdio_raw_read,
183 .write = wl12xx_sdio_raw_write,
184 .power = wl12xx_sdio_set_power,
185 .set_block_size = wl1271_sdio_set_block_size,
186};
187
188#ifdef CONFIG_OF
189
190static const struct wilink_family_data wl127x_data = {
191 .name = "wl127x",
192 .nvs_name = "ti-connectivity/wl127x-nvs.bin",
193};
194
195static const struct wilink_family_data wl128x_data = {
196 .name = "wl128x",
197 .nvs_name = "ti-connectivity/wl128x-nvs.bin",
198};
199
200static const struct wilink_family_data wl18xx_data = {
201 .name = "wl18xx",
202 .cfg_name = "ti-connectivity/wl18xx-conf.bin",
203 .nvs_name = "ti-connectivity/wl1271-nvs.bin",
204};
205
206static const struct of_device_id wlcore_sdio_of_match_table[] = {
207 { .compatible = "ti,wl1271", .data = &wl127x_data },
208 { .compatible = "ti,wl1273", .data = &wl127x_data },
209 { .compatible = "ti,wl1281", .data = &wl128x_data },
210 { .compatible = "ti,wl1283", .data = &wl128x_data },
211 { .compatible = "ti,wl1285", .data = &wl128x_data },
212 { .compatible = "ti,wl1801", .data = &wl18xx_data },
213 { .compatible = "ti,wl1805", .data = &wl18xx_data },
214 { .compatible = "ti,wl1807", .data = &wl18xx_data },
215 { .compatible = "ti,wl1831", .data = &wl18xx_data },
216 { .compatible = "ti,wl1835", .data = &wl18xx_data },
217 { .compatible = "ti,wl1837", .data = &wl18xx_data },
218 { }
219};
220
221static int wlcore_probe_of(struct device *dev, int *irq, int *wakeirq,
222 struct wlcore_platdev_data *pdev_data)
223{
224 struct device_node *np = dev->of_node;
225 const struct of_device_id *of_id;
226
227 of_id = of_match_node(wlcore_sdio_of_match_table, np);
228 if (!of_id)
229 return -ENODEV;
230
231 pdev_data->family = of_id->data;
232
233 *irq = irq_of_parse_and_map(np, 0);
234 if (!*irq) {
235 dev_err(dev, "No irq in platform data\n");
236 return -EINVAL;
237 }
238
239 *wakeirq = irq_of_parse_and_map(np, 1);
240
241
242 of_property_read_u32(np, "ref-clock-frequency",
243 &pdev_data->ref_clock_freq);
244 of_property_read_u32(np, "tcxo-clock-frequency",
245 &pdev_data->tcxo_clock_freq);
246
247 return 0;
248}
249#else
250static int wlcore_probe_of(struct device *dev, int *irq, int *wakeirq,
251 struct wlcore_platdev_data *pdev_data)
252{
253 return -ENODATA;
254}
255#endif
256
257static int wl1271_probe(struct sdio_func *func,
258 const struct sdio_device_id *id)
259{
260 struct wlcore_platdev_data *pdev_data;
261 struct wl12xx_sdio_glue *glue;
262 struct resource res[2];
263 mmc_pm_flag_t mmcflags;
264 int ret = -ENOMEM;
265 int irq, wakeirq, num_irqs;
266 const char *chip_family;
267
268
269 if (func->num != 0x02)
270 return -ENODEV;
271
272 pdev_data = devm_kzalloc(&func->dev, sizeof(*pdev_data), GFP_KERNEL);
273 if (!pdev_data)
274 return -ENOMEM;
275
276 pdev_data->if_ops = &sdio_ops;
277
278 glue = devm_kzalloc(&func->dev, sizeof(*glue), GFP_KERNEL);
279 if (!glue)
280 return -ENOMEM;
281
282 glue->dev = &func->dev;
283
284
285 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
286
287
288 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
289
290 ret = wlcore_probe_of(&func->dev, &irq, &wakeirq, pdev_data);
291 if (ret)
292 goto out;
293
294
295 mmcflags = sdio_get_host_pm_caps(func);
296 dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
297
298 if (mmcflags & MMC_PM_KEEP_POWER)
299 pdev_data->pwr_in_suspend = true;
300
301 sdio_set_drvdata(func, glue);
302
303
304 pm_runtime_put_noidle(&func->dev);
305
306
307
308
309
310
311
312 if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
313 chip_family = "wl18xx";
314 else
315 chip_family = "wl12xx";
316
317 glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
318 if (!glue->core) {
319 dev_err(glue->dev, "can't allocate platform_device");
320 ret = -ENOMEM;
321 goto out;
322 }
323
324 glue->core->dev.parent = &func->dev;
325
326 memset(res, 0x00, sizeof(res));
327
328 res[0].start = irq;
329 res[0].flags = IORESOURCE_IRQ |
330 irqd_get_trigger_type(irq_get_irq_data(irq));
331 res[0].name = "irq";
332
333
334 if (wakeirq > 0) {
335 res[1].start = wakeirq;
336 res[1].flags = IORESOURCE_IRQ |
337 irqd_get_trigger_type(irq_get_irq_data(wakeirq));
338 res[1].name = "wakeirq";
339 num_irqs = 2;
340 } else {
341 num_irqs = 1;
342 }
343 ret = platform_device_add_resources(glue->core, res, num_irqs);
344 if (ret) {
345 dev_err(glue->dev, "can't add resources\n");
346 goto out_dev_put;
347 }
348
349 ret = platform_device_add_data(glue->core, pdev_data,
350 sizeof(*pdev_data));
351 if (ret) {
352 dev_err(glue->dev, "can't add platform data\n");
353 goto out_dev_put;
354 }
355
356 ret = platform_device_add(glue->core);
357 if (ret) {
358 dev_err(glue->dev, "can't add platform device\n");
359 goto out_dev_put;
360 }
361 return 0;
362
363out_dev_put:
364 platform_device_put(glue->core);
365
366out:
367 return ret;
368}
369
370static void wl1271_remove(struct sdio_func *func)
371{
372 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
373
374
375 pm_runtime_get_noresume(&func->dev);
376
377 platform_device_unregister(glue->core);
378}
379
380#ifdef CONFIG_PM
381static int wl1271_suspend(struct device *dev)
382{
383
384
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 if (!wl) {
392 dev_err(dev, "no wilink module was probed\n");
393 goto out;
394 }
395
396 dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
397 wl->wow_enabled);
398
399
400 if (wl->wow_enabled) {
401 sdio_flags = sdio_get_host_pm_caps(func);
402
403 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
404 dev_err(dev, "can't keep power while host "
405 "is suspended\n");
406 ret = -EINVAL;
407 goto out;
408 }
409
410
411 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
412 if (ret) {
413 dev_err(dev, "error while trying to keep power\n");
414 goto out;
415 }
416 }
417out:
418 return ret;
419}
420
421static int wl1271_resume(struct device *dev)
422{
423 dev_dbg(dev, "wl1271 resume\n");
424
425 return 0;
426}
427
428static const struct dev_pm_ops wl1271_sdio_pm_ops = {
429 .suspend = wl1271_suspend,
430 .resume = wl1271_resume,
431};
432#endif
433
434static struct sdio_driver wl1271_sdio_driver = {
435 .name = "wl1271_sdio",
436 .id_table = wl1271_devices,
437 .probe = wl1271_probe,
438 .remove = wl1271_remove,
439#ifdef CONFIG_PM
440 .drv = {
441 .pm = &wl1271_sdio_pm_ops,
442 },
443#endif
444};
445
446static int __init wl1271_init(void)
447{
448 return sdio_register_driver(&wl1271_sdio_driver);
449}
450
451static void __exit wl1271_exit(void)
452{
453 sdio_unregister_driver(&wl1271_sdio_driver);
454}
455
456module_init(wl1271_init);
457module_exit(wl1271_exit);
458
459module_param(dump, bool, 0600);
460MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
461
462MODULE_LICENSE("GPL");
463MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
464MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
465
