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1 | /* | |
2 | * Secure Digital Host Controller Interface ACPI driver. | |
3 | * | |
4 | * Copyright (c) 2012, Intel Corporation. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along with | |
16 | * this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
19 | */ | |
20 | ||
21 | #include <linux/init.h> | |
22 | #include <linux/export.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/device.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <linux/io.h> | |
28 | #include <linux/dma-mapping.h> | |
29 | #include <linux/compiler.h> | |
30 | #include <linux/stddef.h> | |
31 | #include <linux/bitops.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/err.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/acpi.h> | |
36 | #include <linux/pm.h> | |
37 | #include <linux/pm_runtime.h> | |
38 | #include <linux/delay.h> | |
39 | ||
40 | #include <linux/mmc/host.h> | |
41 | #include <linux/mmc/pm.h> | |
42 | #include <linux/mmc/slot-gpio.h> | |
43 | ||
44 | #ifdef CONFIG_X86 | |
45 | #include <asm/cpu_device_id.h> | |
46 | #include <asm/intel-family.h> | |
47 | #include <asm/iosf_mbi.h> | |
48 | #endif | |
49 | ||
50 | #include "sdhci.h" | |
51 | ||
52 | enum { | |
53 | SDHCI_ACPI_SD_CD = BIT(0), | |
54 | SDHCI_ACPI_RUNTIME_PM = BIT(1), | |
55 | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL = BIT(2), | |
56 | }; | |
57 | ||
58 | struct sdhci_acpi_chip { | |
59 | const struct sdhci_ops *ops; | |
60 | unsigned int quirks; | |
61 | unsigned int quirks2; | |
62 | unsigned long caps; | |
63 | unsigned int caps2; | |
64 | mmc_pm_flag_t pm_caps; | |
65 | }; | |
66 | ||
67 | struct sdhci_acpi_slot { | |
68 | const struct sdhci_acpi_chip *chip; | |
69 | unsigned int quirks; | |
70 | unsigned int quirks2; | |
71 | unsigned long caps; | |
72 | unsigned int caps2; | |
73 | mmc_pm_flag_t pm_caps; | |
74 | unsigned int flags; | |
75 | int (*probe_slot)(struct platform_device *, const char *, const char *); | |
76 | int (*remove_slot)(struct platform_device *); | |
77 | }; | |
78 | ||
79 | struct sdhci_acpi_host { | |
80 | struct sdhci_host *host; | |
81 | const struct sdhci_acpi_slot *slot; | |
82 | struct platform_device *pdev; | |
83 | bool use_runtime_pm; | |
84 | }; | |
85 | ||
86 | static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag) | |
87 | { | |
88 | return c->slot && (c->slot->flags & flag); | |
89 | } | |
90 | ||
91 | static void sdhci_acpi_int_hw_reset(struct sdhci_host *host) | |
92 | { | |
93 | u8 reg; | |
94 | ||
95 | reg = sdhci_readb(host, SDHCI_POWER_CONTROL); | |
96 | reg |= 0x10; | |
97 | sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); | |
98 | /* For eMMC, minimum is 1us but give it 9us for good measure */ | |
99 | udelay(9); | |
100 | reg &= ~0x10; | |
101 | sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); | |
102 | /* For eMMC, minimum is 200us but give it 300us for good measure */ | |
103 | usleep_range(300, 1000); | |
104 | } | |
105 | ||
106 | static const struct sdhci_ops sdhci_acpi_ops_dflt = { | |
107 | .set_clock = sdhci_set_clock, | |
108 | .set_bus_width = sdhci_set_bus_width, | |
109 | .reset = sdhci_reset, | |
110 | .set_uhs_signaling = sdhci_set_uhs_signaling, | |
111 | }; | |
112 | ||
113 | static const struct sdhci_ops sdhci_acpi_ops_int = { | |
114 | .set_clock = sdhci_set_clock, | |
115 | .set_bus_width = sdhci_set_bus_width, | |
116 | .reset = sdhci_reset, | |
117 | .set_uhs_signaling = sdhci_set_uhs_signaling, | |
118 | .hw_reset = sdhci_acpi_int_hw_reset, | |
119 | }; | |
120 | ||
121 | static const struct sdhci_acpi_chip sdhci_acpi_chip_int = { | |
122 | .ops = &sdhci_acpi_ops_int, | |
123 | }; | |
124 | ||
125 | #ifdef CONFIG_X86 | |
126 | ||
127 | static bool sdhci_acpi_byt(void) | |
128 | { | |
129 | static const struct x86_cpu_id byt[] = { | |
130 | { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT1 }, | |
131 | {} | |
132 | }; | |
133 | ||
134 | return x86_match_cpu(byt); | |
135 | } | |
136 | ||
137 | #define BYT_IOSF_SCCEP 0x63 | |
138 | #define BYT_IOSF_OCP_NETCTRL0 0x1078 | |
139 | #define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8) | |
140 | ||
141 | static void sdhci_acpi_byt_setting(struct device *dev) | |
142 | { | |
143 | u32 val = 0; | |
144 | ||
145 | if (!sdhci_acpi_byt()) | |
146 | return; | |
147 | ||
148 | if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0, | |
149 | &val)) { | |
150 | dev_err(dev, "%s read error\n", __func__); | |
151 | return; | |
152 | } | |
153 | ||
154 | if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE)) | |
155 | return; | |
156 | ||
157 | val &= ~BYT_IOSF_OCP_TIMEOUT_BASE; | |
158 | ||
159 | if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0, | |
160 | val)) { | |
161 | dev_err(dev, "%s write error\n", __func__); | |
162 | return; | |
163 | } | |
164 | ||
165 | dev_dbg(dev, "%s completed\n", __func__); | |
166 | } | |
167 | ||
168 | static bool sdhci_acpi_byt_defer(struct device *dev) | |
169 | { | |
170 | if (!sdhci_acpi_byt()) | |
171 | return false; | |
172 | ||
173 | if (!iosf_mbi_available()) | |
174 | return true; | |
175 | ||
176 | sdhci_acpi_byt_setting(dev); | |
177 | ||
178 | return false; | |
179 | } | |
180 | ||
181 | #else | |
182 | ||
183 | static inline void sdhci_acpi_byt_setting(struct device *dev) | |
184 | { | |
185 | } | |
186 | ||
187 | static inline bool sdhci_acpi_byt_defer(struct device *dev) | |
188 | { | |
189 | return false; | |
190 | } | |
191 | ||
192 | #endif | |
193 | ||
194 | static int bxt_get_cd(struct mmc_host *mmc) | |
195 | { | |
196 | int gpio_cd = mmc_gpio_get_cd(mmc); | |
197 | struct sdhci_host *host = mmc_priv(mmc); | |
198 | unsigned long flags; | |
199 | int ret = 0; | |
200 | ||
201 | if (!gpio_cd) | |
202 | return 0; | |
203 | ||
204 | spin_lock_irqsave(&host->lock, flags); | |
205 | ||
206 | if (host->flags & SDHCI_DEVICE_DEAD) | |
207 | goto out; | |
208 | ||
209 | ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); | |
210 | out: | |
211 | spin_unlock_irqrestore(&host->lock, flags); | |
212 | ||
213 | return ret; | |
214 | } | |
215 | ||
216 | static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev, | |
217 | const char *hid, const char *uid) | |
218 | { | |
219 | struct sdhci_acpi_host *c = platform_get_drvdata(pdev); | |
220 | struct sdhci_host *host; | |
221 | ||
222 | if (!c || !c->host) | |
223 | return 0; | |
224 | ||
225 | host = c->host; | |
226 | ||
227 | /* Platform specific code during emmc probe slot goes here */ | |
228 | ||
229 | if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") && | |
230 | sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 && | |
231 | sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807) | |
232 | host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | static int sdhci_acpi_sdio_probe_slot(struct platform_device *pdev, | |
238 | const char *hid, const char *uid) | |
239 | { | |
240 | struct sdhci_acpi_host *c = platform_get_drvdata(pdev); | |
241 | struct sdhci_host *host; | |
242 | ||
243 | if (!c || !c->host) | |
244 | return 0; | |
245 | ||
246 | host = c->host; | |
247 | ||
248 | /* Platform specific code during sdio probe slot goes here */ | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev, | |
254 | const char *hid, const char *uid) | |
255 | { | |
256 | struct sdhci_acpi_host *c = platform_get_drvdata(pdev); | |
257 | struct sdhci_host *host; | |
258 | ||
259 | if (!c || !c->host || !c->slot) | |
260 | return 0; | |
261 | ||
262 | host = c->host; | |
263 | ||
264 | /* Platform specific code during sd probe slot goes here */ | |
265 | ||
266 | if (hid && !strcmp(hid, "80865ACA")) { | |
267 | host->mmc_host_ops.get_cd = bxt_get_cd; | |
268 | host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM; | |
269 | } | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
274 | static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = { | |
275 | .chip = &sdhci_acpi_chip_int, | |
276 | .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | | |
277 | MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR | | |
278 | MMC_CAP_CMD_DURING_TFR | MMC_CAP_WAIT_WHILE_BUSY, | |
279 | .caps2 = MMC_CAP2_HC_ERASE_SZ, | |
280 | .flags = SDHCI_ACPI_RUNTIME_PM, | |
281 | .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, | |
282 | .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | | |
283 | SDHCI_QUIRK2_STOP_WITH_TC | | |
284 | SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400, | |
285 | .probe_slot = sdhci_acpi_emmc_probe_slot, | |
286 | }; | |
287 | ||
288 | static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { | |
289 | .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION | | |
290 | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, | |
291 | .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, | |
292 | .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD | | |
293 | MMC_CAP_WAIT_WHILE_BUSY, | |
294 | .flags = SDHCI_ACPI_RUNTIME_PM, | |
295 | .pm_caps = MMC_PM_KEEP_POWER, | |
296 | .probe_slot = sdhci_acpi_sdio_probe_slot, | |
297 | }; | |
298 | ||
299 | static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = { | |
300 | .flags = SDHCI_ACPI_SD_CD | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL | | |
301 | SDHCI_ACPI_RUNTIME_PM, | |
302 | .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, | |
303 | .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON | | |
304 | SDHCI_QUIRK2_STOP_WITH_TC, | |
305 | .caps = MMC_CAP_WAIT_WHILE_BUSY, | |
306 | .probe_slot = sdhci_acpi_sd_probe_slot, | |
307 | }; | |
308 | ||
309 | static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd_3v = { | |
310 | .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION, | |
311 | .quirks2 = SDHCI_QUIRK2_NO_1_8_V, | |
312 | .caps = MMC_CAP_NONREMOVABLE, | |
313 | }; | |
314 | ||
315 | static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd = { | |
316 | .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION, | |
317 | .caps = MMC_CAP_NONREMOVABLE, | |
318 | }; | |
319 | ||
320 | struct sdhci_acpi_uid_slot { | |
321 | const char *hid; | |
322 | const char *uid; | |
323 | const struct sdhci_acpi_slot *slot; | |
324 | }; | |
325 | ||
326 | static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = { | |
327 | { "80865ACA", NULL, &sdhci_acpi_slot_int_sd }, | |
328 | { "80865ACC", NULL, &sdhci_acpi_slot_int_emmc }, | |
329 | { "80865AD0", NULL, &sdhci_acpi_slot_int_sdio }, | |
330 | { "80860F14" , "1" , &sdhci_acpi_slot_int_emmc }, | |
331 | { "80860F14" , "2" , &sdhci_acpi_slot_int_sdio }, | |
332 | { "80860F14" , "3" , &sdhci_acpi_slot_int_sd }, | |
333 | { "80860F16" , NULL, &sdhci_acpi_slot_int_sd }, | |
334 | { "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio }, | |
335 | { "INT33BB" , "3" , &sdhci_acpi_slot_int_sd }, | |
336 | { "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio }, | |
337 | { "INT3436" , NULL, &sdhci_acpi_slot_int_sdio }, | |
338 | { "INT344D" , NULL, &sdhci_acpi_slot_int_sdio }, | |
339 | { "PNP0FFF" , "3" , &sdhci_acpi_slot_int_sd }, | |
340 | { "PNP0D40" }, | |
341 | { "QCOM8051", NULL, &sdhci_acpi_slot_qcom_sd_3v }, | |
342 | { "QCOM8052", NULL, &sdhci_acpi_slot_qcom_sd }, | |
343 | { }, | |
344 | }; | |
345 | ||
346 | static const struct acpi_device_id sdhci_acpi_ids[] = { | |
347 | { "80865ACA" }, | |
348 | { "80865ACC" }, | |
349 | { "80865AD0" }, | |
350 | { "80860F14" }, | |
351 | { "80860F16" }, | |
352 | { "INT33BB" }, | |
353 | { "INT33C6" }, | |
354 | { "INT3436" }, | |
355 | { "INT344D" }, | |
356 | { "PNP0D40" }, | |
357 | { "QCOM8051" }, | |
358 | { "QCOM8052" }, | |
359 | { }, | |
360 | }; | |
361 | MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids); | |
362 | ||
363 | static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid, | |
364 | const char *uid) | |
365 | { | |
366 | const struct sdhci_acpi_uid_slot *u; | |
367 | ||
368 | for (u = sdhci_acpi_uids; u->hid; u++) { | |
369 | if (strcmp(u->hid, hid)) | |
370 | continue; | |
371 | if (!u->uid) | |
372 | return u->slot; | |
373 | if (uid && !strcmp(u->uid, uid)) | |
374 | return u->slot; | |
375 | } | |
376 | return NULL; | |
377 | } | |
378 | ||
379 | static int sdhci_acpi_probe(struct platform_device *pdev) | |
380 | { | |
381 | struct device *dev = &pdev->dev; | |
382 | acpi_handle handle = ACPI_HANDLE(dev); | |
383 | struct acpi_device *device, *child; | |
384 | struct sdhci_acpi_host *c; | |
385 | struct sdhci_host *host; | |
386 | struct resource *iomem; | |
387 | resource_size_t len; | |
388 | const char *hid; | |
389 | const char *uid; | |
390 | int err; | |
391 | ||
392 | if (acpi_bus_get_device(handle, &device)) | |
393 | return -ENODEV; | |
394 | ||
395 | /* Power on the SDHCI controller and its children */ | |
396 | acpi_device_fix_up_power(device); | |
397 | list_for_each_entry(child, &device->children, node) | |
398 | if (child->status.present && child->status.enabled) | |
399 | acpi_device_fix_up_power(child); | |
400 | ||
401 | if (acpi_bus_get_status(device) || !device->status.present) | |
402 | return -ENODEV; | |
403 | ||
404 | if (sdhci_acpi_byt_defer(dev)) | |
405 | return -EPROBE_DEFER; | |
406 | ||
407 | hid = acpi_device_hid(device); | |
408 | uid = device->pnp.unique_id; | |
409 | ||
410 | iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
411 | if (!iomem) | |
412 | return -ENOMEM; | |
413 | ||
414 | len = resource_size(iomem); | |
415 | if (len < 0x100) | |
416 | dev_err(dev, "Invalid iomem size!\n"); | |
417 | ||
418 | if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev))) | |
419 | return -ENOMEM; | |
420 | ||
421 | host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host)); | |
422 | if (IS_ERR(host)) | |
423 | return PTR_ERR(host); | |
424 | ||
425 | c = sdhci_priv(host); | |
426 | c->host = host; | |
427 | c->slot = sdhci_acpi_get_slot(hid, uid); | |
428 | c->pdev = pdev; | |
429 | c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM); | |
430 | ||
431 | platform_set_drvdata(pdev, c); | |
432 | ||
433 | host->hw_name = "ACPI"; | |
434 | host->ops = &sdhci_acpi_ops_dflt; | |
435 | host->irq = platform_get_irq(pdev, 0); | |
436 | ||
437 | host->ioaddr = devm_ioremap_nocache(dev, iomem->start, | |
438 | resource_size(iomem)); | |
439 | if (host->ioaddr == NULL) { | |
440 | err = -ENOMEM; | |
441 | goto err_free; | |
442 | } | |
443 | ||
444 | if (c->slot) { | |
445 | if (c->slot->probe_slot) { | |
446 | err = c->slot->probe_slot(pdev, hid, uid); | |
447 | if (err) | |
448 | goto err_free; | |
449 | } | |
450 | if (c->slot->chip) { | |
451 | host->ops = c->slot->chip->ops; | |
452 | host->quirks |= c->slot->chip->quirks; | |
453 | host->quirks2 |= c->slot->chip->quirks2; | |
454 | host->mmc->caps |= c->slot->chip->caps; | |
455 | host->mmc->caps2 |= c->slot->chip->caps2; | |
456 | host->mmc->pm_caps |= c->slot->chip->pm_caps; | |
457 | } | |
458 | host->quirks |= c->slot->quirks; | |
459 | host->quirks2 |= c->slot->quirks2; | |
460 | host->mmc->caps |= c->slot->caps; | |
461 | host->mmc->caps2 |= c->slot->caps2; | |
462 | host->mmc->pm_caps |= c->slot->pm_caps; | |
463 | } | |
464 | ||
465 | host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; | |
466 | ||
467 | if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) { | |
468 | bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL); | |
469 | ||
470 | err = mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL); | |
471 | if (err) { | |
472 | if (err == -EPROBE_DEFER) | |
473 | goto err_free; | |
474 | dev_warn(dev, "failed to setup card detect gpio\n"); | |
475 | c->use_runtime_pm = false; | |
476 | } | |
477 | } | |
478 | ||
479 | err = sdhci_add_host(host); | |
480 | if (err) | |
481 | goto err_free; | |
482 | ||
483 | if (c->use_runtime_pm) { | |
484 | pm_runtime_set_active(dev); | |
485 | pm_suspend_ignore_children(dev, 1); | |
486 | pm_runtime_set_autosuspend_delay(dev, 50); | |
487 | pm_runtime_use_autosuspend(dev); | |
488 | pm_runtime_enable(dev); | |
489 | } | |
490 | ||
491 | device_enable_async_suspend(dev); | |
492 | ||
493 | return 0; | |
494 | ||
495 | err_free: | |
496 | sdhci_free_host(c->host); | |
497 | return err; | |
498 | } | |
499 | ||
500 | static int sdhci_acpi_remove(struct platform_device *pdev) | |
501 | { | |
502 | struct sdhci_acpi_host *c = platform_get_drvdata(pdev); | |
503 | struct device *dev = &pdev->dev; | |
504 | int dead; | |
505 | ||
506 | if (c->use_runtime_pm) { | |
507 | pm_runtime_get_sync(dev); | |
508 | pm_runtime_disable(dev); | |
509 | pm_runtime_put_noidle(dev); | |
510 | } | |
511 | ||
512 | if (c->slot && c->slot->remove_slot) | |
513 | c->slot->remove_slot(pdev); | |
514 | ||
515 | dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0); | |
516 | sdhci_remove_host(c->host, dead); | |
517 | sdhci_free_host(c->host); | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | #ifdef CONFIG_PM_SLEEP | |
523 | ||
524 | static int sdhci_acpi_suspend(struct device *dev) | |
525 | { | |
526 | struct sdhci_acpi_host *c = dev_get_drvdata(dev); | |
527 | ||
528 | return sdhci_suspend_host(c->host); | |
529 | } | |
530 | ||
531 | static int sdhci_acpi_resume(struct device *dev) | |
532 | { | |
533 | struct sdhci_acpi_host *c = dev_get_drvdata(dev); | |
534 | ||
535 | sdhci_acpi_byt_setting(&c->pdev->dev); | |
536 | ||
537 | return sdhci_resume_host(c->host); | |
538 | } | |
539 | ||
540 | #endif | |
541 | ||
542 | #ifdef CONFIG_PM | |
543 | ||
544 | static int sdhci_acpi_runtime_suspend(struct device *dev) | |
545 | { | |
546 | struct sdhci_acpi_host *c = dev_get_drvdata(dev); | |
547 | ||
548 | return sdhci_runtime_suspend_host(c->host); | |
549 | } | |
550 | ||
551 | static int sdhci_acpi_runtime_resume(struct device *dev) | |
552 | { | |
553 | struct sdhci_acpi_host *c = dev_get_drvdata(dev); | |
554 | ||
555 | sdhci_acpi_byt_setting(&c->pdev->dev); | |
556 | ||
557 | return sdhci_runtime_resume_host(c->host); | |
558 | } | |
559 | ||
560 | #endif | |
561 | ||
562 | static const struct dev_pm_ops sdhci_acpi_pm_ops = { | |
563 | SET_SYSTEM_SLEEP_PM_OPS(sdhci_acpi_suspend, sdhci_acpi_resume) | |
564 | SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend, | |
565 | sdhci_acpi_runtime_resume, NULL) | |
566 | }; | |
567 | ||
568 | static struct platform_driver sdhci_acpi_driver = { | |
569 | .driver = { | |
570 | .name = "sdhci-acpi", | |
571 | .acpi_match_table = sdhci_acpi_ids, | |
572 | .pm = &sdhci_acpi_pm_ops, | |
573 | }, | |
574 | .probe = sdhci_acpi_probe, | |
575 | .remove = sdhci_acpi_remove, | |
576 | }; | |
577 | ||
578 | module_platform_driver(sdhci_acpi_driver); | |
579 | ||
580 | MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver"); | |
581 | MODULE_AUTHOR("Adrian Hunter"); | |
582 | MODULE_LICENSE("GPL v2"); |