Lines Matching +full:dsr +full:- +full:gpios
1 // SPDX-License-Identifier: GPL-2.0-only
6 * Copyright (C) 2007-2008 Pierre Ossman
25 #include <linux/mmc/slot-gpio.h>
30 #include "slot-gpio.h"
47 if (!host->bus_ops) in mmc_host_class_prepare()
51 if (host->bus_ops->pre_suspend) in mmc_host_class_prepare()
52 return host->bus_ops->pre_suspend(host); in mmc_host_class_prepare()
77 wakeup_source_unregister(host->ws); in mmc_host_classdev_release()
78 if (of_alias_get_id(host->parent->of_node, "mmc") < 0) in mmc_host_classdev_release()
79 ida_simple_remove(&mmc_host_ida, host->index); in mmc_host_classdev_release()
100 * mmc_retune_enable() - enter a transfer mode that requires retuning
105 host->can_retune = 1; in mmc_retune_enable()
106 if (host->retune_period) in mmc_retune_enable()
107 mod_timer(&host->retune_timer, in mmc_retune_enable()
108 jiffies + host->retune_period * HZ); in mmc_retune_enable()
112 * Pause re-tuning for a small set of operations. The pause begins after the
113 * next command and after first doing re-tuning.
117 if (!host->retune_paused) { in mmc_retune_pause()
118 host->retune_paused = 1; in mmc_retune_pause()
127 if (host->retune_paused) { in mmc_retune_unpause()
128 host->retune_paused = 0; in mmc_retune_unpause()
135 * mmc_retune_disable() - exit a transfer mode that requires retuning
143 host->can_retune = 0; in mmc_retune_disable()
144 del_timer_sync(&host->retune_timer); in mmc_retune_disable()
150 del_timer_sync(&host->retune_timer); in mmc_retune_timer_stop()
156 if (!host->hold_retune) in mmc_retune_hold()
157 host->retune_now = 1; in mmc_retune_hold()
158 host->hold_retune += 1; in mmc_retune_hold()
163 if (host->hold_retune) in mmc_retune_release()
164 host->hold_retune -= 1; in mmc_retune_release()
175 if (host->retune_now) in mmc_retune()
176 host->retune_now = 0; in mmc_retune()
180 if (!host->need_retune || host->doing_retune || !host->card) in mmc_retune()
183 host->need_retune = 0; in mmc_retune()
185 host->doing_retune = 1; in mmc_retune()
187 if (host->ios.timing == MMC_TIMING_MMC_HS400) { in mmc_retune()
188 err = mmc_hs400_to_hs200(host->card); in mmc_retune()
195 err = mmc_execute_tuning(host->card); in mmc_retune()
200 err = mmc_hs200_to_hs400(host->card); in mmc_retune()
202 host->doing_retune = 0; in mmc_retune()
221 phase->valid = !rc; in mmc_of_parse_timing_phase()
222 if (phase->valid) { in mmc_of_parse_timing_phase()
223 phase->in_deg = degrees[0]; in mmc_of_parse_timing_phase()
224 phase->out_deg = degrees[1]; in mmc_of_parse_timing_phase()
231 struct device *dev = host->parent; in mmc_of_parse_clk_phase()
233 mmc_of_parse_timing_phase(dev, "clk-phase-legacy", in mmc_of_parse_clk_phase()
234 &map->phase[MMC_TIMING_LEGACY]); in mmc_of_parse_clk_phase()
235 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-hs", in mmc_of_parse_clk_phase()
236 &map->phase[MMC_TIMING_MMC_HS]); in mmc_of_parse_clk_phase()
237 mmc_of_parse_timing_phase(dev, "clk-phase-sd-hs", in mmc_of_parse_clk_phase()
238 &map->phase[MMC_TIMING_SD_HS]); in mmc_of_parse_clk_phase()
239 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr12", in mmc_of_parse_clk_phase()
240 &map->phase[MMC_TIMING_UHS_SDR12]); in mmc_of_parse_clk_phase()
241 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr25", in mmc_of_parse_clk_phase()
242 &map->phase[MMC_TIMING_UHS_SDR25]); in mmc_of_parse_clk_phase()
243 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr50", in mmc_of_parse_clk_phase()
244 &map->phase[MMC_TIMING_UHS_SDR50]); in mmc_of_parse_clk_phase()
245 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr104", in mmc_of_parse_clk_phase()
246 &map->phase[MMC_TIMING_UHS_SDR104]); in mmc_of_parse_clk_phase()
247 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-ddr50", in mmc_of_parse_clk_phase()
248 &map->phase[MMC_TIMING_UHS_DDR50]); in mmc_of_parse_clk_phase()
249 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-ddr52", in mmc_of_parse_clk_phase()
250 &map->phase[MMC_TIMING_MMC_DDR52]); in mmc_of_parse_clk_phase()
251 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-hs200", in mmc_of_parse_clk_phase()
252 &map->phase[MMC_TIMING_MMC_HS200]); in mmc_of_parse_clk_phase()
253 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-hs400", in mmc_of_parse_clk_phase()
254 &map->phase[MMC_TIMING_MMC_HS400]); in mmc_of_parse_clk_phase()
259 * mmc_of_parse() - parse host's device properties
264 * parse the properties and set respective generic mmc-host flags and
269 struct device *dev = host->parent; in mmc_of_parse()
276 /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ in mmc_of_parse()
277 if (device_property_read_u32(dev, "bus-width", &bus_width) < 0) { in mmc_of_parse()
278 dev_dbg(host->parent, in mmc_of_parse()
279 "\"bus-width\" property is missing, assuming 1 bit.\n"); in mmc_of_parse()
285 host->caps |= MMC_CAP_8_BIT_DATA; in mmc_of_parse()
286 fallthrough; /* Hosts capable of 8-bit can also do 4 bits */ in mmc_of_parse()
288 host->caps |= MMC_CAP_4_BIT_DATA; in mmc_of_parse()
293 dev_err(host->parent, in mmc_of_parse()
294 "Invalid \"bus-width\" value %u!\n", bus_width); in mmc_of_parse()
295 return -EINVAL; in mmc_of_parse()
298 /* f_max is obtained from the optional "max-frequency" property */ in mmc_of_parse()
299 device_property_read_u32(dev, "max-frequency", &host->f_max); in mmc_of_parse()
303 * match the SDHCI spec. If GPIOs are provided for CD and / or WP, the in mmc_of_parse()
304 * mmc-gpio helpers are used to attach, configure and use them. If in mmc_of_parse()
306 * and MMC_CAP2_RO_ACTIVE_HIGH capability-2 flags is set. If the in mmc_of_parse()
307 * "broken-cd" property is provided, the MMC_CAP_NEEDS_POLL capability in mmc_of_parse()
308 * is set. If the "non-removable" property is found, the in mmc_of_parse()
309 * MMC_CAP_NONREMOVABLE capability is set and no card-detection in mmc_of_parse()
315 if (device_property_read_bool(dev, "non-removable")) { in mmc_of_parse()
316 host->caps |= MMC_CAP_NONREMOVABLE; in mmc_of_parse()
318 if (device_property_read_bool(dev, "cd-inverted")) in mmc_of_parse()
319 host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; in mmc_of_parse()
321 if (device_property_read_u32(dev, "cd-debounce-delay-ms", in mmc_of_parse()
325 if (device_property_read_bool(dev, "broken-cd")) in mmc_of_parse()
326 host->caps |= MMC_CAP_NEEDS_POLL; in mmc_of_parse()
331 dev_info(host->parent, "Got CD GPIO\n"); in mmc_of_parse()
332 else if (ret != -ENOENT && ret != -ENOSYS) in mmc_of_parse()
338 if (device_property_read_bool(dev, "wp-inverted")) in mmc_of_parse()
339 host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; in mmc_of_parse()
343 dev_info(host->parent, "Got WP GPIO\n"); in mmc_of_parse()
344 else if (ret != -ENOENT && ret != -ENOSYS) in mmc_of_parse()
347 if (device_property_read_bool(dev, "disable-wp")) in mmc_of_parse()
348 host->caps2 |= MMC_CAP2_NO_WRITE_PROTECT; in mmc_of_parse()
350 if (device_property_read_bool(dev, "cap-sd-highspeed")) in mmc_of_parse()
351 host->caps |= MMC_CAP_SD_HIGHSPEED; in mmc_of_parse()
352 if (device_property_read_bool(dev, "cap-mmc-highspeed")) in mmc_of_parse()
353 host->caps |= MMC_CAP_MMC_HIGHSPEED; in mmc_of_parse()
354 if (device_property_read_bool(dev, "sd-uhs-sdr12")) in mmc_of_parse()
355 host->caps |= MMC_CAP_UHS_SDR12; in mmc_of_parse()
356 if (device_property_read_bool(dev, "sd-uhs-sdr25")) in mmc_of_parse()
357 host->caps |= MMC_CAP_UHS_SDR25; in mmc_of_parse()
358 if (device_property_read_bool(dev, "sd-uhs-sdr50")) in mmc_of_parse()
359 host->caps |= MMC_CAP_UHS_SDR50; in mmc_of_parse()
360 if (device_property_read_bool(dev, "sd-uhs-sdr104")) in mmc_of_parse()
361 host->caps |= MMC_CAP_UHS_SDR104; in mmc_of_parse()
362 if (device_property_read_bool(dev, "sd-uhs-ddr50")) in mmc_of_parse()
363 host->caps |= MMC_CAP_UHS_DDR50; in mmc_of_parse()
364 if (device_property_read_bool(dev, "cap-power-off-card")) in mmc_of_parse()
365 host->caps |= MMC_CAP_POWER_OFF_CARD; in mmc_of_parse()
366 if (device_property_read_bool(dev, "cap-mmc-hw-reset")) in mmc_of_parse()
367 host->caps |= MMC_CAP_HW_RESET; in mmc_of_parse()
368 if (device_property_read_bool(dev, "cap-sdio-irq")) in mmc_of_parse()
369 host->caps |= MMC_CAP_SDIO_IRQ; in mmc_of_parse()
370 if (device_property_read_bool(dev, "full-pwr-cycle")) in mmc_of_parse()
371 host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE; in mmc_of_parse()
372 if (device_property_read_bool(dev, "full-pwr-cycle-in-suspend")) in mmc_of_parse()
373 host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND; in mmc_of_parse()
374 if (device_property_read_bool(dev, "keep-power-in-suspend")) in mmc_of_parse()
375 host->pm_caps |= MMC_PM_KEEP_POWER; in mmc_of_parse()
376 if (device_property_read_bool(dev, "wakeup-source") || in mmc_of_parse()
377 device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */ in mmc_of_parse()
378 host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; in mmc_of_parse()
379 if (device_property_read_bool(dev, "mmc-ddr-3_3v")) in mmc_of_parse()
380 host->caps |= MMC_CAP_3_3V_DDR; in mmc_of_parse()
381 if (device_property_read_bool(dev, "mmc-ddr-1_8v")) in mmc_of_parse()
382 host->caps |= MMC_CAP_1_8V_DDR; in mmc_of_parse()
383 if (device_property_read_bool(dev, "mmc-ddr-1_2v")) in mmc_of_parse()
384 host->caps |= MMC_CAP_1_2V_DDR; in mmc_of_parse()
385 if (device_property_read_bool(dev, "mmc-hs200-1_8v")) in mmc_of_parse()
386 host->caps2 |= MMC_CAP2_HS200_1_8V_SDR; in mmc_of_parse()
387 if (device_property_read_bool(dev, "mmc-hs200-1_2v")) in mmc_of_parse()
388 host->caps2 |= MMC_CAP2_HS200_1_2V_SDR; in mmc_of_parse()
389 if (device_property_read_bool(dev, "mmc-hs400-1_8v")) in mmc_of_parse()
390 host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR; in mmc_of_parse()
391 if (device_property_read_bool(dev, "mmc-hs400-1_2v")) in mmc_of_parse()
392 host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR; in mmc_of_parse()
393 if (device_property_read_bool(dev, "mmc-hs400-enhanced-strobe")) in mmc_of_parse()
394 host->caps2 |= MMC_CAP2_HS400_ES; in mmc_of_parse()
395 if (device_property_read_bool(dev, "no-sdio")) in mmc_of_parse()
396 host->caps2 |= MMC_CAP2_NO_SDIO; in mmc_of_parse()
397 if (device_property_read_bool(dev, "no-sd")) in mmc_of_parse()
398 host->caps2 |= MMC_CAP2_NO_SD; in mmc_of_parse()
399 if (device_property_read_bool(dev, "no-mmc")) in mmc_of_parse()
400 host->caps2 |= MMC_CAP2_NO_MMC; in mmc_of_parse()
401 if (device_property_read_bool(dev, "no-mmc-hs400")) in mmc_of_parse()
402 host->caps2 &= ~(MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_1_2V | in mmc_of_parse()
405 /* Must be after "non-removable" check */ in mmc_of_parse()
406 if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) { in mmc_of_parse()
407 if (host->caps & MMC_CAP_NONREMOVABLE) in mmc_of_parse()
408 host->fixed_drv_type = drv_type; in mmc_of_parse()
410 dev_err(host->parent, in mmc_of_parse()
414 host->dsr_req = !device_property_read_u32(dev, "dsr", &host->dsr); in mmc_of_parse()
415 if (host->dsr_req && (host->dsr & ~0xffff)) { in mmc_of_parse()
416 dev_err(host->parent, in mmc_of_parse()
417 "device tree specified broken value for DSR: 0x%x, ignoring\n", in mmc_of_parse()
418 host->dsr); in mmc_of_parse()
419 host->dsr_req = 0; in mmc_of_parse()
422 device_property_read_u32(dev, "post-power-on-delay-ms", in mmc_of_parse()
423 &host->ios.power_delay_ms); in mmc_of_parse()
431 * mmc_of_parse_voltage - return mask of supported voltages
435 * Parse the "voltage-ranges" property, returning zero if it is not
436 * found, negative errno if the voltage-range specification is invalid,
437 * or one if the voltage-range is specified and successfully parsed.
441 const char *prop = "voltage-ranges"; in mmc_of_parse_voltage()
442 struct device *dev = host->parent; in mmc_of_parse_voltage()
459 return -EINVAL; in mmc_of_parse_voltage()
464 return -ENOMEM; in mmc_of_parse_voltage()
481 return -EINVAL; in mmc_of_parse_voltage()
493 * mmc_first_nonreserved_index() - get the first index that is not reserved
507 * mmc_alloc_host - initialise the per-host structure.
511 * Initialise the per-host structure.
524 host->rescan_disable = 1; in mmc_alloc_host()
526 alias_id = of_alias_get_id(dev->of_node, "mmc"); in mmc_alloc_host()
540 host->index = index; in mmc_alloc_host()
542 dev_set_name(&host->class_dev, "mmc%d", host->index); in mmc_alloc_host()
543 host->ws = wakeup_source_register(NULL, dev_name(&host->class_dev)); in mmc_alloc_host()
545 host->parent = dev; in mmc_alloc_host()
546 host->class_dev.parent = dev; in mmc_alloc_host()
547 host->class_dev.class = &mmc_host_class; in mmc_alloc_host()
548 device_initialize(&host->class_dev); in mmc_alloc_host()
549 device_enable_async_suspend(&host->class_dev); in mmc_alloc_host()
552 put_device(&host->class_dev); in mmc_alloc_host()
556 spin_lock_init(&host->lock); in mmc_alloc_host()
557 init_waitqueue_head(&host->wq); in mmc_alloc_host()
558 INIT_DELAYED_WORK(&host->detect, mmc_rescan); in mmc_alloc_host()
559 INIT_DELAYED_WORK(&host->sdio_irq_work, sdio_irq_work); in mmc_alloc_host()
560 timer_setup(&host->retune_timer, mmc_retune_timer, 0); in mmc_alloc_host()
566 host->max_segs = 1; in mmc_alloc_host()
567 host->max_seg_size = PAGE_SIZE; in mmc_alloc_host()
569 host->max_req_size = PAGE_SIZE; in mmc_alloc_host()
570 host->max_blk_size = 512; in mmc_alloc_host()
571 host->max_blk_count = PAGE_SIZE / 512; in mmc_alloc_host()
573 host->fixed_drv_type = -EINVAL; in mmc_alloc_host()
574 host->ios.power_delay_ms = 10; in mmc_alloc_host()
575 host->ios.power_mode = MMC_POWER_UNDEFINED; in mmc_alloc_host()
583 * mmc_add_host - initialise host hardware
594 WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) && in mmc_add_host()
595 !host->ops->enable_sdio_irq); in mmc_add_host()
597 err = device_add(&host->class_dev); in mmc_add_host()
601 led_trigger_register_simple(dev_name(&host->class_dev), &host->led); in mmc_add_host()
614 * mmc_remove_host - remove host hardware
629 device_del(&host->class_dev); in mmc_remove_host()
631 led_trigger_unregister_simple(host->led); in mmc_remove_host()
637 * mmc_free_host - free the host structure
645 put_device(&host->class_dev); in mmc_free_host()