1 // SPDX-License-Identifier: GPL-2.0
3 * SD/MMC Greybus driver.
5 * Copyright 2014-2015 Google Inc.
6 * Copyright 2014-2015 Linaro Ltd.
9 #include <linux/kernel.h>
10 #include <linux/mmc/core.h>
11 #include <linux/mmc/host.h>
12 #include <linux/mmc/mmc.h>
13 #include <linux/scatterlist.h>
14 #include <linux/workqueue.h>
15 #include <linux/greybus.h>
20 struct gb_connection *connection;
21 struct gbphy_device *gbphy_dev;
23 struct mmc_request *mrq;
24 struct mutex lock; /* lock for this host */
26 spinlock_t xfer; /* lock to cancel ongoing transfer */
28 struct workqueue_struct *mrq_workqueue;
29 struct work_struct mrqwork;
37 #define GB_SDIO_RSP_R1_R5_R6_R7 (GB_SDIO_RSP_PRESENT | GB_SDIO_RSP_CRC | \
39 #define GB_SDIO_RSP_R3_R4 (GB_SDIO_RSP_PRESENT)
40 #define GB_SDIO_RSP_R2 (GB_SDIO_RSP_PRESENT | GB_SDIO_RSP_CRC | \
42 #define GB_SDIO_RSP_R1B (GB_SDIO_RSP_PRESENT | GB_SDIO_RSP_CRC | \
43 GB_SDIO_RSP_OPCODE | GB_SDIO_RSP_BUSY)
45 /* kernel vdd starts at 0x80 and we need to translate to greybus ones 0x01 */
46 #define GB_SDIO_VDD_SHIFT 8
48 #ifndef MMC_CAP2_CORE_RUNTIME_PM
49 #define MMC_CAP2_CORE_RUNTIME_PM 0
52 static inline bool single_op(struct mmc_command *cmd)
54 u32 opcode = cmd->opcode;
56 return opcode == MMC_WRITE_BLOCK ||
57 opcode == MMC_READ_SINGLE_BLOCK;
60 static void _gb_sdio_set_host_caps(struct gb_sdio_host *host, u32 r)
65 caps = ((r & GB_SDIO_CAP_NONREMOVABLE) ? MMC_CAP_NONREMOVABLE : 0) |
66 ((r & GB_SDIO_CAP_4_BIT_DATA) ? MMC_CAP_4_BIT_DATA : 0) |
67 ((r & GB_SDIO_CAP_8_BIT_DATA) ? MMC_CAP_8_BIT_DATA : 0) |
68 ((r & GB_SDIO_CAP_MMC_HS) ? MMC_CAP_MMC_HIGHSPEED : 0) |
69 ((r & GB_SDIO_CAP_SD_HS) ? MMC_CAP_SD_HIGHSPEED : 0) |
70 ((r & GB_SDIO_CAP_ERASE) ? MMC_CAP_ERASE : 0) |
71 ((r & GB_SDIO_CAP_1_2V_DDR) ? MMC_CAP_1_2V_DDR : 0) |
72 ((r & GB_SDIO_CAP_1_8V_DDR) ? MMC_CAP_1_8V_DDR : 0) |
73 ((r & GB_SDIO_CAP_POWER_OFF_CARD) ? MMC_CAP_POWER_OFF_CARD : 0) |
74 ((r & GB_SDIO_CAP_UHS_SDR12) ? MMC_CAP_UHS_SDR12 : 0) |
75 ((r & GB_SDIO_CAP_UHS_SDR25) ? MMC_CAP_UHS_SDR25 : 0) |
76 ((r & GB_SDIO_CAP_UHS_SDR50) ? MMC_CAP_UHS_SDR50 : 0) |
77 ((r & GB_SDIO_CAP_UHS_SDR104) ? MMC_CAP_UHS_SDR104 : 0) |
78 ((r & GB_SDIO_CAP_UHS_DDR50) ? MMC_CAP_UHS_DDR50 : 0) |
79 ((r & GB_SDIO_CAP_DRIVER_TYPE_A) ? MMC_CAP_DRIVER_TYPE_A : 0) |
80 ((r & GB_SDIO_CAP_DRIVER_TYPE_C) ? MMC_CAP_DRIVER_TYPE_C : 0) |
81 ((r & GB_SDIO_CAP_DRIVER_TYPE_D) ? MMC_CAP_DRIVER_TYPE_D : 0);
83 caps2 = ((r & GB_SDIO_CAP_HS200_1_2V) ? MMC_CAP2_HS200_1_2V_SDR : 0) |
84 ((r & GB_SDIO_CAP_HS400_1_2V) ? MMC_CAP2_HS400_1_2V : 0) |
85 ((r & GB_SDIO_CAP_HS400_1_8V) ? MMC_CAP2_HS400_1_8V : 0) |
86 ((r & GB_SDIO_CAP_HS200_1_8V) ? MMC_CAP2_HS200_1_8V_SDR : 0);
88 host->mmc->caps = caps;
89 host->mmc->caps2 = caps2 | MMC_CAP2_CORE_RUNTIME_PM;
91 if (caps & MMC_CAP_NONREMOVABLE)
92 host->card_present = true;
95 static u32 _gb_sdio_get_host_ocr(u32 ocr)
97 return (((ocr & GB_SDIO_VDD_165_195) ? MMC_VDD_165_195 : 0) |
98 ((ocr & GB_SDIO_VDD_20_21) ? MMC_VDD_20_21 : 0) |
99 ((ocr & GB_SDIO_VDD_21_22) ? MMC_VDD_21_22 : 0) |
100 ((ocr & GB_SDIO_VDD_22_23) ? MMC_VDD_22_23 : 0) |
101 ((ocr & GB_SDIO_VDD_23_24) ? MMC_VDD_23_24 : 0) |
102 ((ocr & GB_SDIO_VDD_24_25) ? MMC_VDD_24_25 : 0) |
103 ((ocr & GB_SDIO_VDD_25_26) ? MMC_VDD_25_26 : 0) |
104 ((ocr & GB_SDIO_VDD_26_27) ? MMC_VDD_26_27 : 0) |
105 ((ocr & GB_SDIO_VDD_27_28) ? MMC_VDD_27_28 : 0) |
106 ((ocr & GB_SDIO_VDD_28_29) ? MMC_VDD_28_29 : 0) |
107 ((ocr & GB_SDIO_VDD_29_30) ? MMC_VDD_29_30 : 0) |
108 ((ocr & GB_SDIO_VDD_30_31) ? MMC_VDD_30_31 : 0) |
109 ((ocr & GB_SDIO_VDD_31_32) ? MMC_VDD_31_32 : 0) |
110 ((ocr & GB_SDIO_VDD_32_33) ? MMC_VDD_32_33 : 0) |
111 ((ocr & GB_SDIO_VDD_33_34) ? MMC_VDD_33_34 : 0) |
112 ((ocr & GB_SDIO_VDD_34_35) ? MMC_VDD_34_35 : 0) |
113 ((ocr & GB_SDIO_VDD_35_36) ? MMC_VDD_35_36 : 0)
117 static int gb_sdio_get_caps(struct gb_sdio_host *host)
119 struct gb_sdio_get_caps_response response;
120 struct mmc_host *mmc = host->mmc;
127 ret = gb_operation_sync(host->connection, GB_SDIO_TYPE_GET_CAPABILITIES,
128 NULL, 0, &response, sizeof(response));
131 r = le32_to_cpu(response.caps);
133 _gb_sdio_set_host_caps(host, r);
135 /* get the max block size that could fit our payload */
136 data_max = gb_operation_get_payload_size_max(host->connection);
137 data_max = min(data_max - sizeof(struct gb_sdio_transfer_request),
138 data_max - sizeof(struct gb_sdio_transfer_response));
140 blksz = min_t(u16, le16_to_cpu(response.max_blk_size), data_max);
141 blksz = max_t(u32, 512, blksz);
143 mmc->max_blk_size = rounddown_pow_of_two(blksz);
144 mmc->max_blk_count = le16_to_cpu(response.max_blk_count);
145 host->data_max = data_max;
147 /* get ocr supported values */
148 ocr = _gb_sdio_get_host_ocr(le32_to_cpu(response.ocr));
149 mmc->ocr_avail = ocr;
150 mmc->ocr_avail_sdio = mmc->ocr_avail;
151 mmc->ocr_avail_sd = mmc->ocr_avail;
152 mmc->ocr_avail_mmc = mmc->ocr_avail;
154 /* get frequency range values */
155 mmc->f_min = le32_to_cpu(response.f_min);
156 mmc->f_max = le32_to_cpu(response.f_max);
161 static void _gb_queue_event(struct gb_sdio_host *host, u8 event)
163 if (event & GB_SDIO_CARD_INSERTED)
164 host->queued_events &= ~GB_SDIO_CARD_REMOVED;
165 else if (event & GB_SDIO_CARD_REMOVED)
166 host->queued_events &= ~GB_SDIO_CARD_INSERTED;
168 host->queued_events |= event;
171 static int _gb_sdio_process_events(struct gb_sdio_host *host, u8 event)
173 u8 state_changed = 0;
175 if (event & GB_SDIO_CARD_INSERTED) {
176 if (host->mmc->caps & MMC_CAP_NONREMOVABLE)
178 if (host->card_present)
180 host->card_present = true;
184 if (event & GB_SDIO_CARD_REMOVED) {
185 if (host->mmc->caps & MMC_CAP_NONREMOVABLE)
187 if (!(host->card_present))
189 host->card_present = false;
193 if (event & GB_SDIO_WP)
194 host->read_only = true;
197 dev_info(mmc_dev(host->mmc), "card %s now event\n",
198 (host->card_present ? "inserted" : "removed"));
199 mmc_detect_change(host->mmc, 0);
205 static int gb_sdio_request_handler(struct gb_operation *op)
207 struct gb_sdio_host *host = gb_connection_get_data(op->connection);
208 struct gb_message *request;
209 struct gb_sdio_event_request *payload;
214 if (type != GB_SDIO_TYPE_EVENT) {
215 dev_err(mmc_dev(host->mmc),
216 "unsupported unsolicited event: %u\n", type);
220 request = op->request;
222 if (request->payload_size < sizeof(*payload)) {
223 dev_err(mmc_dev(host->mmc), "wrong event size received (%zu < %zu)\n",
224 request->payload_size, sizeof(*payload));
228 payload = request->payload;
229 event = payload->event;
232 _gb_queue_event(host, event);
234 ret = _gb_sdio_process_events(host, event);
239 static int gb_sdio_set_ios(struct gb_sdio_host *host,
240 struct gb_sdio_set_ios_request *request)
244 ret = gbphy_runtime_get_sync(host->gbphy_dev);
248 ret = gb_operation_sync(host->connection, GB_SDIO_TYPE_SET_IOS, request,
249 sizeof(*request), NULL, 0);
251 gbphy_runtime_put_autosuspend(host->gbphy_dev);
256 static int _gb_sdio_send(struct gb_sdio_host *host, struct mmc_data *data,
257 size_t len, u16 nblocks, off_t skip)
259 struct gb_sdio_transfer_request *request;
260 struct gb_sdio_transfer_response *response;
261 struct gb_operation *operation;
262 struct scatterlist *sg = data->sg;
263 unsigned int sg_len = data->sg_len;
269 WARN_ON(len > host->data_max);
271 operation = gb_operation_create(host->connection, GB_SDIO_TYPE_TRANSFER,
272 len + sizeof(*request),
273 sizeof(*response), GFP_KERNEL);
277 request = operation->request->payload;
278 request->data_flags = data->flags >> 8;
279 request->data_blocks = cpu_to_le16(nblocks);
280 request->data_blksz = cpu_to_le16(data->blksz);
282 copied = sg_pcopy_to_buffer(sg, sg_len, &request->data[0], len, skip);
286 goto err_put_operation;
289 ret = gb_operation_request_send_sync(operation);
291 goto err_put_operation;
293 response = operation->response->payload;
295 send_blocks = le16_to_cpu(response->data_blocks);
296 send_blksz = le16_to_cpu(response->data_blksz);
298 if (len != send_blksz * send_blocks) {
299 dev_err(mmc_dev(host->mmc), "send: size received: %zu != %d\n",
300 len, send_blksz * send_blocks);
305 gb_operation_put(operation);
310 static int _gb_sdio_recv(struct gb_sdio_host *host, struct mmc_data *data,
311 size_t len, u16 nblocks, off_t skip)
313 struct gb_sdio_transfer_request *request;
314 struct gb_sdio_transfer_response *response;
315 struct gb_operation *operation;
316 struct scatterlist *sg = data->sg;
317 unsigned int sg_len = data->sg_len;
323 WARN_ON(len > host->data_max);
325 operation = gb_operation_create(host->connection, GB_SDIO_TYPE_TRANSFER,
327 len + sizeof(*response), GFP_KERNEL);
331 request = operation->request->payload;
332 request->data_flags = data->flags >> 8;
333 request->data_blocks = cpu_to_le16(nblocks);
334 request->data_blksz = cpu_to_le16(data->blksz);
336 ret = gb_operation_request_send_sync(operation);
338 goto err_put_operation;
340 response = operation->response->payload;
341 recv_blocks = le16_to_cpu(response->data_blocks);
342 recv_blksz = le16_to_cpu(response->data_blksz);
344 if (len != recv_blksz * recv_blocks) {
345 dev_err(mmc_dev(host->mmc), "recv: size received: %d != %zu\n",
346 recv_blksz * recv_blocks, len);
348 goto err_put_operation;
351 copied = sg_pcopy_from_buffer(sg, sg_len, &response->data[0], len,
357 gb_operation_put(operation);
362 static int gb_sdio_transfer(struct gb_sdio_host *host, struct mmc_data *data)
369 if (single_op(data->mrq->cmd) && data->blocks > 1) {
374 left = data->blksz * data->blocks;
377 /* check is a stop transmission is pending */
378 spin_lock(&host->xfer);
379 if (host->xfer_stop) {
380 host->xfer_stop = false;
381 spin_unlock(&host->xfer);
385 spin_unlock(&host->xfer);
386 len = min(left, host->data_max);
387 nblocks = len / data->blksz;
388 len = nblocks * data->blksz;
390 if (data->flags & MMC_DATA_READ) {
391 ret = _gb_sdio_recv(host, data, len, nblocks, skip);
395 ret = _gb_sdio_send(host, data, len, nblocks, skip);
399 data->bytes_xfered += len;
409 static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
411 struct gb_sdio_command_request request = {0};
412 struct gb_sdio_command_response response;
413 struct mmc_data *data = host->mrq->data;
414 unsigned int timeout_ms;
420 switch (mmc_resp_type(cmd)) {
422 cmd_flags = GB_SDIO_RSP_NONE;
425 cmd_flags = GB_SDIO_RSP_R1_R5_R6_R7;
428 cmd_flags = GB_SDIO_RSP_R1B;
431 cmd_flags = GB_SDIO_RSP_R2;
434 cmd_flags = GB_SDIO_RSP_R3_R4;
437 dev_err(mmc_dev(host->mmc), "cmd flag invalid 0x%04x\n",
443 switch (mmc_cmd_type(cmd)) {
445 cmd_type = GB_SDIO_CMD_BC;
448 cmd_type = GB_SDIO_CMD_BCR;
451 cmd_type = GB_SDIO_CMD_AC;
454 cmd_type = GB_SDIO_CMD_ADTC;
457 dev_err(mmc_dev(host->mmc), "cmd type invalid 0x%04x\n",
463 request.cmd = cmd->opcode;
464 request.cmd_flags = cmd_flags;
465 request.cmd_type = cmd_type;
466 request.cmd_arg = cpu_to_le32(cmd->arg);
467 /* some controllers need to know at command time data details */
469 request.data_blocks = cpu_to_le16(data->blocks);
470 request.data_blksz = cpu_to_le16(data->blksz);
473 timeout_ms = cmd->busy_timeout ? cmd->busy_timeout :
474 GB_OPERATION_TIMEOUT_DEFAULT;
476 ret = gb_operation_sync_timeout(host->connection, GB_SDIO_TYPE_COMMAND,
477 &request, sizeof(request), &response,
478 sizeof(response), timeout_ms);
482 /* no response expected */
483 if (cmd_flags == GB_SDIO_RSP_NONE)
486 /* long response expected */
487 if (cmd_flags & GB_SDIO_RSP_R2)
488 for (i = 0; i < 4; i++)
489 cmd->resp[i] = le32_to_cpu(response.resp[i]);
491 cmd->resp[0] = le32_to_cpu(response.resp[0]);
498 static void gb_sdio_mrq_work(struct work_struct *work)
500 struct gb_sdio_host *host;
501 struct mmc_request *mrq;
504 host = container_of(work, struct gb_sdio_host, mrqwork);
506 ret = gbphy_runtime_get_sync(host->gbphy_dev);
510 mutex_lock(&host->lock);
513 mutex_unlock(&host->lock);
514 gbphy_runtime_put_autosuspend(host->gbphy_dev);
515 dev_err(mmc_dev(host->mmc), "mmc request is NULL");
520 mrq->cmd->error = -ESHUTDOWN;
525 ret = gb_sdio_command(host, mrq->sbc);
530 ret = gb_sdio_command(host, mrq->cmd);
535 ret = gb_sdio_transfer(host, mrq->data);
541 ret = gb_sdio_command(host, mrq->stop);
548 mutex_unlock(&host->lock);
549 mmc_request_done(host->mmc, mrq);
550 gbphy_runtime_put_autosuspend(host->gbphy_dev);
553 static void gb_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
555 struct gb_sdio_host *host = mmc_priv(mmc);
556 struct mmc_command *cmd = mrq->cmd;
558 /* Check if it is a cancel to ongoing transfer */
559 if (cmd->opcode == MMC_STOP_TRANSMISSION) {
560 spin_lock(&host->xfer);
561 host->xfer_stop = true;
562 spin_unlock(&host->xfer);
565 mutex_lock(&host->lock);
571 mrq->cmd->error = -ESHUTDOWN;
574 if (!host->card_present) {
575 mrq->cmd->error = -ENOMEDIUM;
579 queue_work(host->mrq_workqueue, &host->mrqwork);
581 mutex_unlock(&host->lock);
586 mutex_unlock(&host->lock);
587 mmc_request_done(mmc, mrq);
590 static void gb_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
592 struct gb_sdio_host *host = mmc_priv(mmc);
593 struct gb_sdio_set_ios_request request;
602 mutex_lock(&host->lock);
603 request.clock = cpu_to_le32(ios->clock);
606 vdd = 1 << (ios->vdd - GB_SDIO_VDD_SHIFT);
607 request.vdd = cpu_to_le32(vdd);
609 request.bus_mode = ios->bus_mode == MMC_BUSMODE_OPENDRAIN ?
610 GB_SDIO_BUSMODE_OPENDRAIN :
611 GB_SDIO_BUSMODE_PUSHPULL;
613 switch (ios->power_mode) {
616 power_mode = GB_SDIO_POWER_OFF;
619 power_mode = GB_SDIO_POWER_UP;
622 power_mode = GB_SDIO_POWER_ON;
624 case MMC_POWER_UNDEFINED:
625 power_mode = GB_SDIO_POWER_UNDEFINED;
628 request.power_mode = power_mode;
630 switch (ios->bus_width) {
631 case MMC_BUS_WIDTH_1:
632 bus_width = GB_SDIO_BUS_WIDTH_1;
634 case MMC_BUS_WIDTH_4:
636 bus_width = GB_SDIO_BUS_WIDTH_4;
638 case MMC_BUS_WIDTH_8:
639 bus_width = GB_SDIO_BUS_WIDTH_8;
642 request.bus_width = bus_width;
644 switch (ios->timing) {
645 case MMC_TIMING_LEGACY:
647 timing = GB_SDIO_TIMING_LEGACY;
649 case MMC_TIMING_MMC_HS:
650 timing = GB_SDIO_TIMING_MMC_HS;
652 case MMC_TIMING_SD_HS:
653 timing = GB_SDIO_TIMING_SD_HS;
655 case MMC_TIMING_UHS_SDR12:
656 timing = GB_SDIO_TIMING_UHS_SDR12;
658 case MMC_TIMING_UHS_SDR25:
659 timing = GB_SDIO_TIMING_UHS_SDR25;
661 case MMC_TIMING_UHS_SDR50:
662 timing = GB_SDIO_TIMING_UHS_SDR50;
664 case MMC_TIMING_UHS_SDR104:
665 timing = GB_SDIO_TIMING_UHS_SDR104;
667 case MMC_TIMING_UHS_DDR50:
668 timing = GB_SDIO_TIMING_UHS_DDR50;
670 case MMC_TIMING_MMC_DDR52:
671 timing = GB_SDIO_TIMING_MMC_DDR52;
673 case MMC_TIMING_MMC_HS200:
674 timing = GB_SDIO_TIMING_MMC_HS200;
676 case MMC_TIMING_MMC_HS400:
677 timing = GB_SDIO_TIMING_MMC_HS400;
680 request.timing = timing;
682 switch (ios->signal_voltage) {
683 case MMC_SIGNAL_VOLTAGE_330:
684 signal_voltage = GB_SDIO_SIGNAL_VOLTAGE_330;
686 case MMC_SIGNAL_VOLTAGE_180:
688 signal_voltage = GB_SDIO_SIGNAL_VOLTAGE_180;
690 case MMC_SIGNAL_VOLTAGE_120:
691 signal_voltage = GB_SDIO_SIGNAL_VOLTAGE_120;
694 request.signal_voltage = signal_voltage;
696 switch (ios->drv_type) {
697 case MMC_SET_DRIVER_TYPE_A:
698 drv_type = GB_SDIO_SET_DRIVER_TYPE_A;
700 case MMC_SET_DRIVER_TYPE_C:
701 drv_type = GB_SDIO_SET_DRIVER_TYPE_C;
703 case MMC_SET_DRIVER_TYPE_D:
704 drv_type = GB_SDIO_SET_DRIVER_TYPE_D;
706 case MMC_SET_DRIVER_TYPE_B:
708 drv_type = GB_SDIO_SET_DRIVER_TYPE_B;
711 request.drv_type = drv_type;
713 ret = gb_sdio_set_ios(host, &request);
717 memcpy(&mmc->ios, ios, sizeof(mmc->ios));
720 mutex_unlock(&host->lock);
723 static int gb_mmc_get_ro(struct mmc_host *mmc)
725 struct gb_sdio_host *host = mmc_priv(mmc);
727 mutex_lock(&host->lock);
729 mutex_unlock(&host->lock);
732 mutex_unlock(&host->lock);
734 return host->read_only;
737 static int gb_mmc_get_cd(struct mmc_host *mmc)
739 struct gb_sdio_host *host = mmc_priv(mmc);
741 mutex_lock(&host->lock);
743 mutex_unlock(&host->lock);
746 mutex_unlock(&host->lock);
748 return host->card_present;
751 static int gb_mmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
756 static const struct mmc_host_ops gb_sdio_ops = {
757 .request = gb_mmc_request,
758 .set_ios = gb_mmc_set_ios,
759 .get_ro = gb_mmc_get_ro,
760 .get_cd = gb_mmc_get_cd,
761 .start_signal_voltage_switch = gb_mmc_switch_voltage,
764 static int gb_sdio_probe(struct gbphy_device *gbphy_dev,
765 const struct gbphy_device_id *id)
767 struct gb_connection *connection;
768 struct mmc_host *mmc;
769 struct gb_sdio_host *host;
772 mmc = mmc_alloc_host(sizeof(*host), &gbphy_dev->dev);
776 connection = gb_connection_create(gbphy_dev->bundle,
777 le16_to_cpu(gbphy_dev->cport_desc->id),
778 gb_sdio_request_handler);
779 if (IS_ERR(connection)) {
780 ret = PTR_ERR(connection);
784 host = mmc_priv(mmc);
786 host->removed = true;
788 host->connection = connection;
789 gb_connection_set_data(connection, host);
790 host->gbphy_dev = gbphy_dev;
791 gb_gbphy_set_data(gbphy_dev, host);
793 ret = gb_connection_enable_tx(connection);
795 goto exit_connection_destroy;
797 ret = gb_sdio_get_caps(host);
799 goto exit_connection_disable;
801 mmc->ops = &gb_sdio_ops;
803 mmc->max_segs = host->mmc->max_blk_count;
805 /* for now we make a map 1:1 between max request and segment size */
806 mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
807 mmc->max_seg_size = mmc->max_req_size;
809 mutex_init(&host->lock);
810 spin_lock_init(&host->xfer);
811 host->mrq_workqueue = alloc_workqueue("mmc-%s", 0, 1,
812 dev_name(&gbphy_dev->dev));
813 if (!host->mrq_workqueue) {
815 goto exit_connection_disable;
817 INIT_WORK(&host->mrqwork, gb_sdio_mrq_work);
819 ret = gb_connection_enable(connection);
821 goto exit_wq_destroy;
823 ret = mmc_add_host(mmc);
825 goto exit_wq_destroy;
826 host->removed = false;
827 ret = _gb_sdio_process_events(host, host->queued_events);
828 host->queued_events = 0;
830 gbphy_runtime_put_autosuspend(gbphy_dev);
835 destroy_workqueue(host->mrq_workqueue);
836 exit_connection_disable:
837 gb_connection_disable(connection);
838 exit_connection_destroy:
839 gb_connection_destroy(connection);
846 static void gb_sdio_remove(struct gbphy_device *gbphy_dev)
848 struct gb_sdio_host *host = gb_gbphy_get_data(gbphy_dev);
849 struct gb_connection *connection = host->connection;
850 struct mmc_host *mmc;
853 ret = gbphy_runtime_get_sync(gbphy_dev);
855 gbphy_runtime_get_noresume(gbphy_dev);
857 mutex_lock(&host->lock);
858 host->removed = true;
860 gb_connection_set_data(connection, NULL);
861 mutex_unlock(&host->lock);
863 flush_workqueue(host->mrq_workqueue);
864 destroy_workqueue(host->mrq_workqueue);
865 gb_connection_disable_rx(connection);
866 mmc_remove_host(mmc);
867 gb_connection_disable(connection);
868 gb_connection_destroy(connection);
872 static const struct gbphy_device_id gb_sdio_id_table[] = {
873 { GBPHY_PROTOCOL(GREYBUS_PROTOCOL_SDIO) },
876 MODULE_DEVICE_TABLE(gbphy, gb_sdio_id_table);
878 static struct gbphy_driver sdio_driver = {
880 .probe = gb_sdio_probe,
881 .remove = gb_sdio_remove,
882 .id_table = gb_sdio_id_table,
885 module_gbphy_driver(sdio_driver);
886 MODULE_LICENSE("GPL v2");