42 	struct mmc_host *host = cls_dev_to_mmc_host(dev);  in mmc_host_classdev_release()  local
44 	idr_remove(&mmc_host_idr, host->index);  in mmc_host_classdev_release()
46 	kfree(host);  in mmc_host_classdev_release()
68 	struct mmc_host *host = cls_dev_to_mmc_host(dev);  in clkgate_delay_show()  local
69 	return snprintf(buf, PAGE_SIZE, "%lu\n", host->clkgate_delay);  in clkgate_delay_show()
75 	struct mmc_host *host = cls_dev_to_mmc_host(dev);  in clkgate_delay_store()  local
81 	spin_lock_irqsave(&host->clk_lock, flags);  in clkgate_delay_store()
82 	host->clkgate_delay = value;  in clkgate_delay_store()
83 	spin_unlock_irqrestore(&host->clk_lock, flags);  in clkgate_delay_store()
94 static void mmc_host_clk_gate_delayed(struct mmc_host *host)  in mmc_host_clk_gate_delayed()  argument
97 	unsigned long freq = host->ios.clock;  in mmc_host_clk_gate_delayed()
103 			 mmc_hostname(host));  in mmc_host_clk_gate_delayed()
111 	spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
118 	if (!host->clk_requests) {  in mmc_host_clk_gate_delayed()
119 		spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
121 		ndelay(host->clk_delay * tick_ns);  in mmc_host_clk_gate_delayed()
124 		spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
127 	mutex_lock(&host->clk_gate_mutex);  in mmc_host_clk_gate_delayed()
128 	spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
129 	if (!host->clk_requests) {  in mmc_host_clk_gate_delayed()
130 		spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
132 		mmc_gate_clock(host);  in mmc_host_clk_gate_delayed()
133 		spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
134 		pr_debug("%s: gated MCI clock\n", mmc_hostname(host));  in mmc_host_clk_gate_delayed()
136 	spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_gate_delayed()
137 	mutex_unlock(&host->clk_gate_mutex);  in mmc_host_clk_gate_delayed()
145 	struct mmc_host *host = container_of(work, struct mmc_host,  in mmc_host_clk_gate_work()  local
148 	mmc_host_clk_gate_delayed(host);  in mmc_host_clk_gate_work()
159 void mmc_host_clk_hold(struct mmc_host *host)  in mmc_host_clk_hold()  argument
164 	cancel_delayed_work_sync(&host->clk_gate_work);  in mmc_host_clk_hold()
165 	mutex_lock(&host->clk_gate_mutex);  in mmc_host_clk_hold()
166 	spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_hold()
167 	if (host->clk_gated) {  in mmc_host_clk_hold()
168 		spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_hold()
169 		mmc_ungate_clock(host);  in mmc_host_clk_hold()
170 		spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_hold()
171 		pr_debug("%s: ungated MCI clock\n", mmc_hostname(host));  in mmc_host_clk_hold()
173 	host->clk_requests++;  in mmc_host_clk_hold()
174 	spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_hold()
175 	mutex_unlock(&host->clk_gate_mutex);  in mmc_host_clk_hold()
206 void mmc_host_clk_release(struct mmc_host *host)  in mmc_host_clk_release()  argument
210 	spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_release()
211 	host->clk_requests--;  in mmc_host_clk_release()
212 	if (mmc_host_may_gate_card(host->card) &&  in mmc_host_clk_release()
213 	    !host->clk_requests)  in mmc_host_clk_release()
214 		schedule_delayed_work(&host->clk_gate_work,  in mmc_host_clk_release()
215 				      msecs_to_jiffies(host->clkgate_delay));  in mmc_host_clk_release()
216 	spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_release()
225 unsigned int mmc_host_clk_rate(struct mmc_host *host)  in mmc_host_clk_rate()  argument
230 	spin_lock_irqsave(&host->clk_lock, flags);  in mmc_host_clk_rate()
231 	if (host->clk_gated)  in mmc_host_clk_rate()
232 		freq = host->clk_old;  in mmc_host_clk_rate()
234 		freq = host->ios.clock;  in mmc_host_clk_rate()
235 	spin_unlock_irqrestore(&host->clk_lock, flags);  in mmc_host_clk_rate()
243 static inline void mmc_host_clk_init(struct mmc_host *host)  in mmc_host_clk_init()  argument
245 	host->clk_requests = 0;  in mmc_host_clk_init()
247 	host->clk_delay = 8;  in mmc_host_clk_init()
252 	host->clkgate_delay = 0;  in mmc_host_clk_init()
253 	host->clk_gated = false;  in mmc_host_clk_init()
254 	INIT_DELAYED_WORK(&host->clk_gate_work, mmc_host_clk_gate_work);  in mmc_host_clk_init()
255 	spin_lock_init(&host->clk_lock);  in mmc_host_clk_init()
256 	mutex_init(&host->clk_gate_mutex);  in mmc_host_clk_init()
263 static inline void mmc_host_clk_exit(struct mmc_host *host)  in mmc_host_clk_exit()  argument
269 	if (cancel_delayed_work_sync(&host->clk_gate_work))  in mmc_host_clk_exit()
270 		mmc_host_clk_gate_delayed(host);  in mmc_host_clk_exit()
271 	if (host->clk_gated)  in mmc_host_clk_exit()
272 		mmc_host_clk_hold(host);  in mmc_host_clk_exit()
274 	WARN_ON(host->clk_requests > 1);  in mmc_host_clk_exit()
277 static inline void mmc_host_clk_sysfs_init(struct mmc_host *host)  in mmc_host_clk_sysfs_init()  argument
279 	host->clkgate_delay_attr.show = clkgate_delay_show;  in mmc_host_clk_sysfs_init()
280 	host->clkgate_delay_attr.store = clkgate_delay_store;  in mmc_host_clk_sysfs_init()
281 	sysfs_attr_init(&host->clkgate_delay_attr.attr);  in mmc_host_clk_sysfs_init()
282 	host->clkgate_delay_attr.attr.name = "clkgate_delay";  in mmc_host_clk_sysfs_init()
283 	host->clkgate_delay_attr.attr.mode = S_IRUGO | S_IWUSR;  in mmc_host_clk_sysfs_init()
284 	if (device_create_file(&host->class_dev, &host->clkgate_delay_attr))  in mmc_host_clk_sysfs_init()
286 				mmc_hostname(host));  in mmc_host_clk_sysfs_init()
290 static inline void mmc_host_clk_init(struct mmc_host *host)  in mmc_host_clk_init()  argument
294 static inline void mmc_host_clk_exit(struct mmc_host *host)  in mmc_host_clk_exit()  argument
298 static inline void mmc_host_clk_sysfs_init(struct mmc_host *host)  in mmc_host_clk_sysfs_init()  argument
313 int mmc_of_parse(struct mmc_host *host)  in mmc_of_parse()  argument
321 	if (!host->parent || !host->parent->of_node)  in mmc_of_parse()
324 	np = host->parent->of_node;  in mmc_of_parse()
328 		dev_dbg(host->parent,  in mmc_of_parse()
335 		host->caps |= MMC_CAP_8_BIT_DATA;  in mmc_of_parse()
338 		host->caps |= MMC_CAP_4_BIT_DATA;  in mmc_of_parse()
343 		dev_err(host->parent,  in mmc_of_parse()
349 	of_property_read_u32(np, "max-frequency", &host->f_max);  in mmc_of_parse()
365 		host->caps |= MMC_CAP_NONREMOVABLE;  in mmc_of_parse()
370 			host->caps |= MMC_CAP_NEEDS_POLL;  in mmc_of_parse()
372 		ret = mmc_gpiod_request_cd(host, "cd", 0, true,  in mmc_of_parse()
375 			dev_info(host->parent, "Got CD GPIO\n");  in mmc_of_parse()
391 			host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;  in mmc_of_parse()
397 	ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);  in mmc_of_parse()
399 		dev_info(host->parent, "Got WP GPIO\n");  in mmc_of_parse()
405 		host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;  in mmc_of_parse()
408 		host->caps |= MMC_CAP_SD_HIGHSPEED;  in mmc_of_parse()
410 		host->caps |= MMC_CAP_MMC_HIGHSPEED;  in mmc_of_parse()
412 		host->caps |= MMC_CAP_UHS_SDR12;  in mmc_of_parse()
414 		host->caps |= MMC_CAP_UHS_SDR25;  in mmc_of_parse()
416 		host->caps |= MMC_CAP_UHS_SDR50;  in mmc_of_parse()
418 		host->caps |= MMC_CAP_UHS_SDR104;  in mmc_of_parse()
420 		host->caps |= MMC_CAP_UHS_DDR50;  in mmc_of_parse()
422 		host->caps |= MMC_CAP_POWER_OFF_CARD;  in mmc_of_parse()
424 		host->caps |= MMC_CAP_SDIO_IRQ;  in mmc_of_parse()
426 		host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;  in mmc_of_parse()
428 		host->pm_caps |= MMC_PM_KEEP_POWER;  in mmc_of_parse()
430 		host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;  in mmc_of_parse()
432 		host->caps |= MMC_CAP_1_8V_DDR;  in mmc_of_parse()
434 		host->caps |= MMC_CAP_1_2V_DDR;  in mmc_of_parse()
436 		host->caps2 |= MMC_CAP2_HS200_1_8V_SDR;  in mmc_of_parse()
438 		host->caps2 |= MMC_CAP2_HS200_1_2V_SDR;  in mmc_of_parse()
440 		host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR;  in mmc_of_parse()
442 		host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR;  in mmc_of_parse()
444 	host->dsr_req = !of_property_read_u32(np, "dsr", &host->dsr);  in mmc_of_parse()
445 	if (host->dsr_req && (host->dsr & ~0xffff)) {  in mmc_of_parse()
446 		dev_err(host->parent,  in mmc_of_parse()
448 			host->dsr);  in mmc_of_parse()
449 		host->dsr_req = 0;  in mmc_of_parse()
452 	return mmc_pwrseq_alloc(host);  in mmc_of_parse()
467 	struct mmc_host *host;  in mmc_alloc_host()  local
469 	host = kzalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);  in mmc_alloc_host()
470 	if (!host)  in mmc_alloc_host()
474 	host->rescan_disable = 1;  in mmc_alloc_host()
477 	err = idr_alloc(&mmc_host_idr, host, 0, 0, GFP_NOWAIT);  in mmc_alloc_host()
479 		host->index = err;  in mmc_alloc_host()
483 		kfree(host);  in mmc_alloc_host()
487 	dev_set_name(&host->class_dev, "mmc%d", host->index);  in mmc_alloc_host()
489 	host->parent = dev;  in mmc_alloc_host()
490 	host->class_dev.parent = dev;  in mmc_alloc_host()
491 	host->class_dev.class = &mmc_host_class;  in mmc_alloc_host()
492 	device_initialize(&host->class_dev);  in mmc_alloc_host()
494 	if (mmc_gpio_alloc(host)) {  in mmc_alloc_host()
495 		put_device(&host->class_dev);  in mmc_alloc_host()
499 	mmc_host_clk_init(host);  in mmc_alloc_host()
501 	spin_lock_init(&host->lock);  in mmc_alloc_host()
502 	init_waitqueue_head(&host->wq);  in mmc_alloc_host()
503 	INIT_DELAYED_WORK(&host->detect, mmc_rescan);  in mmc_alloc_host()
505 	host->pm_notify.notifier_call = mmc_pm_notify;  in mmc_alloc_host()
512 	host->max_segs = 1;  in mmc_alloc_host()
513 	host->max_seg_size = PAGE_CACHE_SIZE;  in mmc_alloc_host()
515 	host->max_req_size = PAGE_CACHE_SIZE;  in mmc_alloc_host()
516 	host->max_blk_size = 512;  in mmc_alloc_host()
517 	host->max_blk_count = PAGE_CACHE_SIZE / 512;  in mmc_alloc_host()
519 	return host;  in mmc_alloc_host()
532 int mmc_add_host(struct mmc_host *host)  in mmc_add_host()  argument
536 	WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&  in mmc_add_host()
537 		!host->ops->enable_sdio_irq);  in mmc_add_host()
539 	err = device_add(&host->class_dev);  in mmc_add_host()
543 	led_trigger_register_simple(dev_name(&host->class_dev), &host->led);  in mmc_add_host()
546 	mmc_add_host_debugfs(host);  in mmc_add_host()
548 	mmc_host_clk_sysfs_init(host);  in mmc_add_host()
550 	mmc_start_host(host);  in mmc_add_host()
551 	register_pm_notifier(&host->pm_notify);  in mmc_add_host()
566 void mmc_remove_host(struct mmc_host *host)  in mmc_remove_host()  argument
568 	unregister_pm_notifier(&host->pm_notify);  in mmc_remove_host()
569 	mmc_stop_host(host);  in mmc_remove_host()
572 	mmc_remove_host_debugfs(host);  in mmc_remove_host()
575 	device_del(&host->class_dev);  in mmc_remove_host()
577 	led_trigger_unregister_simple(host->led);  in mmc_remove_host()
579 	mmc_host_clk_exit(host);  in mmc_remove_host()
590 void mmc_free_host(struct mmc_host *host)  in mmc_free_host()  argument
592 	mmc_pwrseq_free(host);  in mmc_free_host()
593 	put_device(&host->class_dev);  in mmc_free_host()