Lines Matching +full:wp +full:- +full:inverted
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()
109 * mmc_retune_enable() - enter a transfer mode that requires retuning
114 host->can_retune = 1; in mmc_retune_enable()
115 if (host->retune_period) in mmc_retune_enable()
116 mod_timer(&host->retune_timer, in mmc_retune_enable()
117 jiffies + host->retune_period * HZ); in mmc_retune_enable()
121 * Pause re-tuning for a small set of operations. The pause begins after the
126 if (!host->retune_paused) { in mmc_retune_pause()
127 host->retune_paused = 1; in mmc_retune_pause()
135 if (host->retune_paused) { in mmc_retune_unpause()
136 host->retune_paused = 0; in mmc_retune_unpause()
143 * mmc_retune_disable() - exit a transfer mode that requires retuning
151 host->can_retune = 0; in mmc_retune_disable()
152 del_timer_sync(&host->retune_timer); in mmc_retune_disable()
158 del_timer_sync(&host->retune_timer); in mmc_retune_timer_stop()
164 if (!host->hold_retune) in mmc_retune_hold()
165 host->retune_now = 1; in mmc_retune_hold()
166 host->hold_retune += 1; in mmc_retune_hold()
171 if (host->hold_retune) in mmc_retune_release()
172 host->hold_retune -= 1; in mmc_retune_release()
183 if (host->retune_now) in mmc_retune()
184 host->retune_now = 0; in mmc_retune()
188 if (!host->need_retune || host->doing_retune || !host->card) in mmc_retune()
191 host->need_retune = 0; in mmc_retune()
193 host->doing_retune = 1; in mmc_retune()
195 if (host->ios.timing == MMC_TIMING_MMC_HS400) { in mmc_retune()
196 err = mmc_hs400_to_hs200(host->card); in mmc_retune()
203 err = mmc_execute_tuning(host->card); in mmc_retune()
208 err = mmc_hs200_to_hs400(host->card); in mmc_retune()
210 host->doing_retune = 0; in mmc_retune()
229 phase->valid = !rc; in mmc_of_parse_timing_phase()
230 if (phase->valid) { in mmc_of_parse_timing_phase()
231 phase->in_deg = degrees[0]; in mmc_of_parse_timing_phase()
232 phase->out_deg = degrees[1]; in mmc_of_parse_timing_phase()
239 struct device *dev = host->parent; in mmc_of_parse_clk_phase()
241 mmc_of_parse_timing_phase(dev, "clk-phase-legacy", in mmc_of_parse_clk_phase()
242 &map->phase[MMC_TIMING_LEGACY]); in mmc_of_parse_clk_phase()
243 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-hs", in mmc_of_parse_clk_phase()
244 &map->phase[MMC_TIMING_MMC_HS]); in mmc_of_parse_clk_phase()
245 mmc_of_parse_timing_phase(dev, "clk-phase-sd-hs", in mmc_of_parse_clk_phase()
246 &map->phase[MMC_TIMING_SD_HS]); in mmc_of_parse_clk_phase()
247 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr12", in mmc_of_parse_clk_phase()
248 &map->phase[MMC_TIMING_UHS_SDR12]); in mmc_of_parse_clk_phase()
249 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr25", in mmc_of_parse_clk_phase()
250 &map->phase[MMC_TIMING_UHS_SDR25]); in mmc_of_parse_clk_phase()
251 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr50", in mmc_of_parse_clk_phase()
252 &map->phase[MMC_TIMING_UHS_SDR50]); in mmc_of_parse_clk_phase()
253 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-sdr104", in mmc_of_parse_clk_phase()
254 &map->phase[MMC_TIMING_UHS_SDR104]); in mmc_of_parse_clk_phase()
255 mmc_of_parse_timing_phase(dev, "clk-phase-uhs-ddr50", in mmc_of_parse_clk_phase()
256 &map->phase[MMC_TIMING_UHS_DDR50]); in mmc_of_parse_clk_phase()
257 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-ddr52", in mmc_of_parse_clk_phase()
258 &map->phase[MMC_TIMING_MMC_DDR52]); in mmc_of_parse_clk_phase()
259 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-hs200", in mmc_of_parse_clk_phase()
260 &map->phase[MMC_TIMING_MMC_HS200]); in mmc_of_parse_clk_phase()
261 mmc_of_parse_timing_phase(dev, "clk-phase-mmc-hs400", in mmc_of_parse_clk_phase()
262 &map->phase[MMC_TIMING_MMC_HS400]); in mmc_of_parse_clk_phase()
267 * mmc_of_parse() - parse host's device properties
272 * parse the properties and set respective generic mmc-host flags and
277 struct device *dev = host->parent; in mmc_of_parse()
284 /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ in mmc_of_parse()
285 if (device_property_read_u32(dev, "bus-width", &bus_width) < 0) { in mmc_of_parse()
286 dev_dbg(host->parent, in mmc_of_parse()
287 "\"bus-width\" property is missing, assuming 1 bit.\n"); in mmc_of_parse()
293 host->caps |= MMC_CAP_8_BIT_DATA; in mmc_of_parse()
294 fallthrough; /* Hosts capable of 8-bit can also do 4 bits */ in mmc_of_parse()
296 host->caps |= MMC_CAP_4_BIT_DATA; in mmc_of_parse()
301 dev_err(host->parent, in mmc_of_parse()
302 "Invalid \"bus-width\" value %u!\n", bus_width); in mmc_of_parse()
303 return -EINVAL; in mmc_of_parse()
306 /* f_max is obtained from the optional "max-frequency" property */ in mmc_of_parse()
307 device_property_read_u32(dev, "max-frequency", &host->f_max); in mmc_of_parse()
310 * Configure CD and WP pins. They are both by default active low to in mmc_of_parse()
311 * match the SDHCI spec. If GPIOs are provided for CD and / or WP, the in mmc_of_parse()
312 * mmc-gpio helpers are used to attach, configure and use them. If in mmc_of_parse()
314 * and MMC_CAP2_RO_ACTIVE_HIGH capability-2 flags is set. If the in mmc_of_parse()
315 * "broken-cd" property is provided, the MMC_CAP_NEEDS_POLL capability in mmc_of_parse()
316 * is set. If the "non-removable" property is found, the in mmc_of_parse()
317 * MMC_CAP_NONREMOVABLE capability is set and no card-detection in mmc_of_parse()
323 if (device_property_read_bool(dev, "non-removable")) { in mmc_of_parse()
324 host->caps |= MMC_CAP_NONREMOVABLE; in mmc_of_parse()
326 if (device_property_read_bool(dev, "cd-inverted")) in mmc_of_parse()
327 host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; in mmc_of_parse()
329 if (device_property_read_u32(dev, "cd-debounce-delay-ms", in mmc_of_parse()
333 if (device_property_read_bool(dev, "broken-cd")) in mmc_of_parse()
334 host->caps |= MMC_CAP_NEEDS_POLL; in mmc_of_parse()
339 dev_info(host->parent, "Got CD GPIO\n"); in mmc_of_parse()
340 else if (ret != -ENOENT && ret != -ENOSYS) in mmc_of_parse()
346 if (device_property_read_bool(dev, "wp-inverted")) in mmc_of_parse()
347 host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; in mmc_of_parse()
349 ret = mmc_gpiod_request_ro(host, "wp", 0, 0); in mmc_of_parse()
351 dev_info(host->parent, "Got WP GPIO\n"); in mmc_of_parse()
352 else if (ret != -ENOENT && ret != -ENOSYS) in mmc_of_parse()
355 if (device_property_read_bool(dev, "disable-wp")) in mmc_of_parse()
356 host->caps2 |= MMC_CAP2_NO_WRITE_PROTECT; in mmc_of_parse()
358 if (device_property_read_bool(dev, "cap-sd-highspeed")) in mmc_of_parse()
359 host->caps |= MMC_CAP_SD_HIGHSPEED; in mmc_of_parse()
360 if (device_property_read_bool(dev, "cap-mmc-highspeed")) in mmc_of_parse()
361 host->caps |= MMC_CAP_MMC_HIGHSPEED; in mmc_of_parse()
362 if (device_property_read_bool(dev, "sd-uhs-sdr12")) in mmc_of_parse()
363 host->caps |= MMC_CAP_UHS_SDR12; in mmc_of_parse()
364 if (device_property_read_bool(dev, "sd-uhs-sdr25")) in mmc_of_parse()
365 host->caps |= MMC_CAP_UHS_SDR25; in mmc_of_parse()
366 if (device_property_read_bool(dev, "sd-uhs-sdr50")) in mmc_of_parse()
367 host->caps |= MMC_CAP_UHS_SDR50; in mmc_of_parse()
368 if (device_property_read_bool(dev, "sd-uhs-sdr104")) in mmc_of_parse()
369 host->caps |= MMC_CAP_UHS_SDR104; in mmc_of_parse()
370 if (device_property_read_bool(dev, "sd-uhs-ddr50")) in mmc_of_parse()
371 host->caps |= MMC_CAP_UHS_DDR50; in mmc_of_parse()
372 if (device_property_read_bool(dev, "cap-power-off-card")) in mmc_of_parse()
373 host->caps |= MMC_CAP_POWER_OFF_CARD; in mmc_of_parse()
374 if (device_property_read_bool(dev, "cap-mmc-hw-reset")) in mmc_of_parse()
375 host->caps |= MMC_CAP_HW_RESET; in mmc_of_parse()
376 if (device_property_read_bool(dev, "cap-sdio-irq")) in mmc_of_parse()
377 host->caps |= MMC_CAP_SDIO_IRQ; in mmc_of_parse()
378 if (device_property_read_bool(dev, "full-pwr-cycle")) in mmc_of_parse()
379 host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE; in mmc_of_parse()
380 if (device_property_read_bool(dev, "full-pwr-cycle-in-suspend")) in mmc_of_parse()
381 host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND; in mmc_of_parse()
382 if (device_property_read_bool(dev, "keep-power-in-suspend")) in mmc_of_parse()
383 host->pm_caps |= MMC_PM_KEEP_POWER; in mmc_of_parse()
384 if (device_property_read_bool(dev, "wakeup-source") || in mmc_of_parse()
385 device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */ in mmc_of_parse()
386 host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; in mmc_of_parse()
387 if (device_property_read_bool(dev, "mmc-ddr-3_3v")) in mmc_of_parse()
388 host->caps |= MMC_CAP_3_3V_DDR; in mmc_of_parse()
389 if (device_property_read_bool(dev, "mmc-ddr-1_8v")) in mmc_of_parse()
390 host->caps |= MMC_CAP_1_8V_DDR; in mmc_of_parse()
391 if (device_property_read_bool(dev, "mmc-ddr-1_2v")) in mmc_of_parse()
392 host->caps |= MMC_CAP_1_2V_DDR; in mmc_of_parse()
393 if (device_property_read_bool(dev, "mmc-hs200-1_8v")) in mmc_of_parse()
394 host->caps2 |= MMC_CAP2_HS200_1_8V_SDR; in mmc_of_parse()
395 if (device_property_read_bool(dev, "mmc-hs200-1_2v")) in mmc_of_parse()
396 host->caps2 |= MMC_CAP2_HS200_1_2V_SDR; in mmc_of_parse()
397 if (device_property_read_bool(dev, "mmc-hs400-1_8v")) in mmc_of_parse()
398 host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR; in mmc_of_parse()
399 if (device_property_read_bool(dev, "mmc-hs400-1_2v")) in mmc_of_parse()
400 host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR; in mmc_of_parse()
401 if (device_property_read_bool(dev, "mmc-hs400-enhanced-strobe")) in mmc_of_parse()
402 host->caps2 |= MMC_CAP2_HS400_ES; in mmc_of_parse()
403 if (device_property_read_bool(dev, "no-sdio")) in mmc_of_parse()
404 host->caps2 |= MMC_CAP2_NO_SDIO; in mmc_of_parse()
405 if (device_property_read_bool(dev, "no-sd")) in mmc_of_parse()
406 host->caps2 |= MMC_CAP2_NO_SD; in mmc_of_parse()
407 if (device_property_read_bool(dev, "no-mmc")) in mmc_of_parse()
408 host->caps2 |= MMC_CAP2_NO_MMC; in mmc_of_parse()
409 if (device_property_read_bool(dev, "no-mmc-hs400")) in mmc_of_parse()
410 host->caps2 &= ~(MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_1_2V | in mmc_of_parse()
413 /* Must be after "non-removable" check */ in mmc_of_parse()
414 if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) { in mmc_of_parse()
415 if (host->caps & MMC_CAP_NONREMOVABLE) in mmc_of_parse()
416 host->fixed_drv_type = drv_type; in mmc_of_parse()
418 dev_err(host->parent, in mmc_of_parse()
422 host->dsr_req = !device_property_read_u32(dev, "dsr", &host->dsr); in mmc_of_parse()
423 if (host->dsr_req && (host->dsr & ~0xffff)) { in mmc_of_parse()
424 dev_err(host->parent, in mmc_of_parse()
426 host->dsr); in mmc_of_parse()
427 host->dsr_req = 0; in mmc_of_parse()
430 device_property_read_u32(dev, "post-power-on-delay-ms", in mmc_of_parse()
431 &host->ios.power_delay_ms); in mmc_of_parse()
439 * mmc_of_parse_voltage - return mask of supported voltages
443 * Parse the "voltage-ranges" property, returning zero if it is not
444 * found, negative errno if the voltage-range specification is invalid,
445 * or one if the voltage-range is specified and successfully parsed.
449 const char *prop = "voltage-ranges"; in mmc_of_parse_voltage()
450 struct device *dev = host->parent; in mmc_of_parse_voltage()
467 return -EINVAL; in mmc_of_parse_voltage()
472 return -ENOMEM; in mmc_of_parse_voltage()
489 return -EINVAL; in mmc_of_parse_voltage()
501 * mmc_first_nonreserved_index() - get the first index that is not reserved
515 * mmc_alloc_host - initialise the per-host structure.
519 * Initialise the per-host structure.
532 host->rescan_disable = 1; in mmc_alloc_host()
534 alias_id = of_alias_get_id(dev->of_node, "mmc"); in mmc_alloc_host()
548 host->index = index; in mmc_alloc_host()
550 dev_set_name(&host->class_dev, "mmc%d", host->index); in mmc_alloc_host()
551 host->ws = wakeup_source_register(NULL, dev_name(&host->class_dev)); in mmc_alloc_host()
553 host->parent = dev; in mmc_alloc_host()
554 host->class_dev.parent = dev; in mmc_alloc_host()
555 host->class_dev.class = &mmc_host_class; in mmc_alloc_host()
556 device_initialize(&host->class_dev); in mmc_alloc_host()
557 device_enable_async_suspend(&host->class_dev); in mmc_alloc_host()
560 put_device(&host->class_dev); in mmc_alloc_host()
564 spin_lock_init(&host->lock); in mmc_alloc_host()
565 init_waitqueue_head(&host->wq); in mmc_alloc_host()
566 INIT_DELAYED_WORK(&host->detect, mmc_rescan); in mmc_alloc_host()
567 INIT_WORK(&host->sdio_irq_work, sdio_irq_work); in mmc_alloc_host()
568 timer_setup(&host->retune_timer, mmc_retune_timer, 0); in mmc_alloc_host()
574 host->max_segs = 1; in mmc_alloc_host()
575 host->max_seg_size = PAGE_SIZE; in mmc_alloc_host()
577 host->max_req_size = PAGE_SIZE; in mmc_alloc_host()
578 host->max_blk_size = 512; in mmc_alloc_host()
579 host->max_blk_count = PAGE_SIZE / 512; in mmc_alloc_host()
581 host->fixed_drv_type = -EINVAL; in mmc_alloc_host()
582 host->ios.power_delay_ms = 10; in mmc_alloc_host()
583 host->ios.power_mode = MMC_POWER_UNDEFINED; in mmc_alloc_host()
618 struct device *dev = host->parent; in mmc_validate_host_caps()
619 u32 caps = host->caps, caps2 = host->caps2; in mmc_validate_host_caps()
621 if (caps & MMC_CAP_SDIO_IRQ && !host->ops->enable_sdio_irq) { in mmc_validate_host_caps()
622 dev_warn(dev, "missing ->enable_sdio_irq() ops\n"); in mmc_validate_host_caps()
623 return -EINVAL; in mmc_validate_host_caps()
628 dev_warn(dev, "drop HS400 support since no 8-bit bus\n"); in mmc_validate_host_caps()
629 host->caps2 = caps2 & ~MMC_CAP2_HS400_ES & ~MMC_CAP2_HS400; in mmc_validate_host_caps()
636 * mmc_add_host - initialise host hardware
651 err = device_add(&host->class_dev); in mmc_add_host()
655 led_trigger_register_simple(dev_name(&host->class_dev), &host->led); in mmc_add_host()
666 * mmc_remove_host - remove host hardware
679 device_del(&host->class_dev); in mmc_remove_host()
681 led_trigger_unregister_simple(host->led); in mmc_remove_host()
687 * mmc_free_host - free the host structure
694 cancel_delayed_work_sync(&host->detect); in mmc_free_host()
696 put_device(&host->class_dev); in mmc_free_host()