Lines Matching +full:sr +full:- +full:idle +full:- +full:ns
1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2004-2008 Atmel Corporation
12 #include <linux/dma-mapping.h>
62 #define ATMCI_MR_PDCMODE BIT(15) /* PDC-oriented Mode */
71 #define ATMCI_SDCBUS_1BIT (0 << 6) /* 1-bit data bus */
72 #define ATMCI_SDCBUS_4BIT (2 << 6) /* 4-bit data bus */
73 #define ATMCI_SDCBUS_8BIT (3 << 6) /* 8-bit data bus[2] */
79 #define ATMCI_CMDR_RSPTYP_48BIT (1 << 6) /* 48-bit response */
80 #define ATMCI_CMDR_RSPTYP_136BIT (2 << 6) /* 136-bit response */
92 #define ATMCI_CMDR_BLOCK (0 << 19) /* Single-block transfer */
93 #define ATMCI_CMDR_MULTI_BLOCK (1 << 19) /* Multi-block transfer */
126 #define ATMCI_CSRCV BIT(13) /* CE-ATA Completion Signal Received */
133 #define ATMCI_RTOE BIT(20) /* Response Time-Out Error */
135 #define ATMCI_DTOE BIT(22) /* Data Time-Out Error */
136 #define ATMCI_CSTOE BIT(23) /* Completion Signal Time-out Error */
168 __raw_readl((port)->regs + reg)
170 __raw_writel((value), (port)->regs + reg)
205 * struct mci_slot_pdata - board-specific per-slot configuration
216 * Note that support for multiple slots is experimental -- some cards
228 * struct mci_platform_data - board-specific MMC/SDcard configuration
231 * @slot: Per-slot configuration data.
259 * struct atmel_mci - MMC controller state shared between all slots
272 * or NULL if the controller is idle.
276 * @data_size: just data->blocks * data->blksz.
280 * @cmd_status: Snapshot of SR taken upon completion of the current
282 * @data_status: Snapshot of SR taken upon completion of the current
316 * @lock is a softirq-safe spinlock protecting @queue as well as
333 * EVENT_DATA_COMPLETE is set in @pending_events, all data-related
335 * snapshot of SR. Similarly, before EVENT_CMD_COMPLETE is set, the
337 * snapshot of SR, and before EVENT_XFER_COMPLETE can be set, the
392 * struct atmel_mci_slot - MMC slot state
398 * processed, or NULL when the slot is idle.
401 * @clock: Clock rate configured by set_ios(). Protected by host->lock.
432 test_and_clear_bit(event, &host->pending_events)
434 set_bit(event, &host->completed_events)
436 set_bit(event, &host->pending_events)
444 struct atmel_mci_slot *slot = s->private; in atmci_req_show()
451 spin_lock_bh(&slot->host->lock); in atmci_req_show()
452 mrq = slot->mrq; in atmci_req_show()
455 cmd = mrq->cmd; in atmci_req_show()
456 data = mrq->data; in atmci_req_show()
457 stop = mrq->stop; in atmci_req_show()
462 cmd->opcode, cmd->arg, cmd->flags, in atmci_req_show()
463 cmd->resp[0], cmd->resp[1], cmd->resp[2], in atmci_req_show()
464 cmd->resp[3], cmd->error); in atmci_req_show()
467 data->bytes_xfered, data->blocks, in atmci_req_show()
468 data->blksz, data->flags, data->error); in atmci_req_show()
472 stop->opcode, stop->arg, stop->flags, in atmci_req_show()
473 stop->resp[0], stop->resp[1], stop->resp[2], in atmci_req_show()
474 stop->resp[3], stop->error); in atmci_req_show()
477 spin_unlock_bh(&slot->host->lock); in atmci_req_show()
532 struct atmel_mci *host = s->private; in atmci_regs_show()
539 return -ENOMEM; in atmci_regs_show()
541 pm_runtime_get_sync(&host->pdev->dev); in atmci_regs_show()
545 * not disabling interrupts, so IMR and SR may not be in atmci_regs_show()
548 spin_lock_bh(&host->lock); in atmci_regs_show()
549 memcpy_fromio(buf, host->regs, ATMCI_REGS_SIZE); in atmci_regs_show()
550 spin_unlock_bh(&host->lock); in atmci_regs_show()
552 pm_runtime_mark_last_busy(&host->pdev->dev); in atmci_regs_show()
553 pm_runtime_put_autosuspend(&host->pdev->dev); in atmci_regs_show()
559 if (host->caps.has_odd_clk_div) in atmci_regs_show()
573 if (host->caps.has_cstor_reg) in atmci_regs_show()
578 atmci_show_status_reg(s, "SR", buf[ATMCI_SR / 4]); in atmci_regs_show()
581 if (host->caps.has_dma_conf_reg) { in atmci_regs_show()
591 if (host->caps.has_cfg_reg) { in atmci_regs_show()
612 struct mmc_host *mmc = slot->mmc; in atmci_init_debugfs()
613 struct atmel_mci *host = slot->host; in atmci_init_debugfs()
616 root = mmc->debugfs_root; in atmci_init_debugfs()
622 debugfs_create_u32("state", S_IRUSR, root, &host->state); in atmci_init_debugfs()
624 &host->pending_events); in atmci_init_debugfs()
626 &host->completed_events); in atmci_init_debugfs()
640 struct device_node *np = pdev->dev.of_node; in atmci_of_init()
647 dev_err(&pdev->dev, "device node not found\n"); in atmci_of_init()
648 return ERR_PTR(-EINVAL); in atmci_of_init()
651 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in atmci_of_init()
653 return ERR_PTR(-ENOMEM); in atmci_of_init()
657 dev_warn(&pdev->dev, "reg property is missing for %pOF\n", in atmci_of_init()
663 dev_warn(&pdev->dev, "can't have more than %d slots\n", in atmci_of_init()
669 if (of_property_read_u32(cnp, "bus-width", in atmci_of_init()
670 &pdata->slot[slot_id].bus_width)) in atmci_of_init()
671 pdata->slot[slot_id].bus_width = 1; in atmci_of_init()
673 pdata->slot[slot_id].detect_pin = in atmci_of_init()
674 devm_fwnode_gpiod_get(&pdev->dev, of_fwnode_handle(cnp), in atmci_of_init()
675 "cd", GPIOD_IN, "cd-gpios"); in atmci_of_init()
676 err = PTR_ERR_OR_ZERO(pdata->slot[slot_id].detect_pin); in atmci_of_init()
678 if (err != -ENOENT) { in atmci_of_init()
682 pdata->slot[slot_id].detect_pin = NULL; in atmci_of_init()
685 pdata->slot[slot_id].non_removable = in atmci_of_init()
686 of_property_read_bool(cnp, "non-removable"); in atmci_of_init()
688 pdata->slot[slot_id].wp_pin = in atmci_of_init()
689 devm_fwnode_gpiod_get(&pdev->dev, of_fwnode_handle(cnp), in atmci_of_init()
690 "wp", GPIOD_IN, "wp-gpios"); in atmci_of_init()
691 err = PTR_ERR_OR_ZERO(pdata->slot[slot_id].wp_pin); in atmci_of_init()
693 if (err != -ENOENT) { in atmci_of_init()
697 pdata->slot[slot_id].wp_pin = NULL; in atmci_of_init()
707 return ERR_PTR(-EINVAL); in atmci_of_init()
718 * 1 -> 0, 4 -> 1, 8 -> 2, 16 -> 3.
719 * With version 0x600, we need to convert them as: 1 -> 0, 2 -> 1, 4 -> 2,
720 * 8 -> 3, 16 -> 4.
734 return fls(maxburst) - offset; in atmci_convert_chksize()
745 dev_dbg(&host->pdev->dev, "software timeout\n"); in atmci_timeout_timer()
747 if (host->mrq->cmd->data) { in atmci_timeout_timer()
748 host->mrq->cmd->data->error = -ETIMEDOUT; in atmci_timeout_timer()
749 host->data = NULL; in atmci_timeout_timer()
755 if (host->state == STATE_DATA_XFER) in atmci_timeout_timer()
756 host->stop_transfer(host); in atmci_timeout_timer()
758 host->mrq->cmd->error = -ETIMEDOUT; in atmci_timeout_timer()
759 host->cmd = NULL; in atmci_timeout_timer()
761 host->need_reset = 1; in atmci_timeout_timer()
762 host->state = STATE_END_REQUEST; in atmci_timeout_timer()
764 tasklet_schedule(&host->tasklet); in atmci_timeout_timer()
768 unsigned int ns) in atmci_ns_to_clocks() argument
771 * It is easier here to use us instead of ns for the timeout, in atmci_ns_to_clocks()
774 unsigned int us = DIV_ROUND_UP(ns, 1000); in atmci_ns_to_clocks()
776 /* Maximum clock frequency is host->bus_hz/2 */ in atmci_ns_to_clocks()
777 return us * (DIV_ROUND_UP(host->bus_hz, 2000000)); in atmci_ns_to_clocks()
790 timeout = atmci_ns_to_clocks(host, data->timeout_ns) in atmci_set_timeout()
791 + data->timeout_clks; in atmci_set_timeout()
795 dtocyc = (timeout + (1 << shift) - 1) >> shift; in atmci_set_timeout()
805 dev_vdbg(&slot->mmc->class_dev, "setting timeout to %u cycles\n", in atmci_set_timeout()
819 cmd->error = -EINPROGRESS; in atmci_prepare_command()
821 cmdr = ATMCI_CMDR_CMDNB(cmd->opcode); in atmci_prepare_command()
823 if (cmd->flags & MMC_RSP_PRESENT) { in atmci_prepare_command()
824 if (cmd->flags & MMC_RSP_136) in atmci_prepare_command()
837 if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN) in atmci_prepare_command()
840 data = cmd->data; in atmci_prepare_command()
844 if (cmd->opcode == SD_IO_RW_EXTENDED) { in atmci_prepare_command()
847 if (data->blocks > 1) in atmci_prepare_command()
853 if (data->flags & MMC_DATA_READ) in atmci_prepare_command()
863 unsigned int timeout_ms = cmd->busy_timeout ? cmd->busy_timeout : in atmci_send_command()
866 WARN_ON(host->cmd); in atmci_send_command()
867 host->cmd = cmd; in atmci_send_command()
869 dev_vdbg(&host->pdev->dev, in atmci_send_command()
871 cmd->arg, cmd_flags); in atmci_send_command()
873 atmci_writel(host, ATMCI_ARGR, cmd->arg); in atmci_send_command()
876 mod_timer(&host->timer, jiffies + msecs_to_jiffies(timeout_ms)); in atmci_send_command()
881 dev_dbg(&host->pdev->dev, "send stop command\n"); in atmci_send_stop_cmd()
882 atmci_send_command(host, data->stop, host->stop_cmdr); in atmci_send_stop_cmd()
888 * Update host->data_size and host->sg.
909 if (!host->caps.has_rwproof) { in atmci_pdc_set_single_buf()
910 buf_size = host->buf_size; in atmci_pdc_set_single_buf()
911 atmci_writel(host, pointer_reg, host->buf_phys_addr); in atmci_pdc_set_single_buf()
913 buf_size = sg_dma_len(host->sg); in atmci_pdc_set_single_buf()
914 atmci_writel(host, pointer_reg, sg_dma_address(host->sg)); in atmci_pdc_set_single_buf()
917 if (host->data_size <= buf_size) { in atmci_pdc_set_single_buf()
918 if (host->data_size & 0x3) { in atmci_pdc_set_single_buf()
920 atmci_writel(host, counter_reg, host->data_size); in atmci_pdc_set_single_buf()
921 atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCFBYTE); in atmci_pdc_set_single_buf()
923 /* Else transfer 32-bits words */ in atmci_pdc_set_single_buf()
924 atmci_writel(host, counter_reg, host->data_size / 4); in atmci_pdc_set_single_buf()
926 host->data_size = 0; in atmci_pdc_set_single_buf()
928 /* We assume the size of a page is 32-bits aligned */ in atmci_pdc_set_single_buf()
929 atmci_writel(host, counter_reg, sg_dma_len(host->sg) / 4); in atmci_pdc_set_single_buf()
930 host->data_size -= sg_dma_len(host->sg); in atmci_pdc_set_single_buf()
931 if (host->data_size) in atmci_pdc_set_single_buf()
932 host->sg = sg_next(host->sg); in atmci_pdc_set_single_buf()
944 if (host->data_size) in atmci_pdc_set_both_buf()
953 struct mmc_data *data = host->data; in atmci_pdc_cleanup()
956 dma_unmap_sg(&host->pdev->dev, in atmci_pdc_cleanup()
957 data->sg, data->sg_len, in atmci_pdc_cleanup()
968 int transfer_size = host->data->blocks * host->data->blksz; in atmci_pdc_complete()
973 if ((!host->caps.has_rwproof) in atmci_pdc_complete()
974 && (host->data->flags & MMC_DATA_READ)) { in atmci_pdc_complete()
975 if (host->caps.has_bad_data_ordering) in atmci_pdc_complete()
977 host->buffer[i] = swab32(host->buffer[i]); in atmci_pdc_complete()
978 sg_copy_from_buffer(host->data->sg, host->data->sg_len, in atmci_pdc_complete()
979 host->buffer, transfer_size); in atmci_pdc_complete()
984 dev_dbg(&host->pdev->dev, "(%s) set pending xfer complete\n", __func__); in atmci_pdc_complete()
986 tasklet_schedule(&host->tasklet); in atmci_pdc_complete()
991 struct mmc_data *data = host->data; in atmci_dma_cleanup()
994 dma_unmap_sg(host->dma.chan->device->dev, in atmci_dma_cleanup()
995 data->sg, data->sg_len, in atmci_dma_cleanup()
1005 struct mmc_data *data = host->data; in atmci_dma_complete()
1007 dev_vdbg(&host->pdev->dev, "DMA complete\n"); in atmci_dma_complete()
1009 if (host->caps.has_dma_conf_reg) in atmci_dma_complete()
1020 dev_dbg(&host->pdev->dev, in atmci_dma_complete()
1023 tasklet_schedule(&host->tasklet); in atmci_dma_complete()
1057 data->error = -EINPROGRESS; in atmci_prepare_data()
1059 host->sg = data->sg; in atmci_prepare_data()
1060 host->sg_len = data->sg_len; in atmci_prepare_data()
1061 host->data = data; in atmci_prepare_data()
1062 host->data_chan = NULL; in atmci_prepare_data()
1073 if (data->blocks * data->blksz < 12 in atmci_prepare_data()
1074 || (data->blocks * data->blksz) & 3) in atmci_prepare_data()
1075 host->need_reset = true; in atmci_prepare_data()
1077 host->pio_offset = 0; in atmci_prepare_data()
1078 if (data->flags & MMC_DATA_READ) in atmci_prepare_data()
1098 data->error = -EINPROGRESS; in atmci_prepare_data_pdc()
1100 host->data = data; in atmci_prepare_data_pdc()
1101 host->sg = data->sg; in atmci_prepare_data_pdc()
1105 atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCMODE); in atmci_prepare_data_pdc()
1107 if (data->flags & MMC_DATA_READ) in atmci_prepare_data_pdc()
1115 tmp |= ATMCI_BLKLEN(data->blksz); in atmci_prepare_data_pdc()
1119 host->data_size = data->blocks * data->blksz; in atmci_prepare_data_pdc()
1120 dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, in atmci_prepare_data_pdc()
1123 if ((!host->caps.has_rwproof) in atmci_prepare_data_pdc()
1124 && (host->data->flags & MMC_DATA_WRITE)) { in atmci_prepare_data_pdc()
1125 sg_copy_to_buffer(host->data->sg, host->data->sg_len, in atmci_prepare_data_pdc()
1126 host->buffer, host->data_size); in atmci_prepare_data_pdc()
1127 if (host->caps.has_bad_data_ordering) in atmci_prepare_data_pdc()
1128 for (i = 0; i < host->data_size; i++) in atmci_prepare_data_pdc()
1129 host->buffer[i] = swab32(host->buffer[i]); in atmci_prepare_data_pdc()
1132 if (host->data_size) in atmci_prepare_data_pdc()
1133 atmci_pdc_set_both_buf(host, data->flags & MMC_DATA_READ ? in atmci_prepare_data_pdc()
1150 data->error = -EINPROGRESS; in atmci_prepare_data_dma()
1152 WARN_ON(host->data); in atmci_prepare_data_dma()
1153 host->sg = NULL; in atmci_prepare_data_dma()
1154 host->data = data; in atmci_prepare_data_dma()
1160 * non-word-aligned buffers or lengths. Also, we don't bother in atmci_prepare_data_dma()
1163 if (data->blocks * data->blksz < ATMCI_DMA_THRESHOLD) in atmci_prepare_data_dma()
1165 if (data->blksz & 3) in atmci_prepare_data_dma()
1168 for_each_sg(data->sg, sg, data->sg_len, i) { in atmci_prepare_data_dma()
1169 if (sg->offset & 3 || sg->length & 3) in atmci_prepare_data_dma()
1174 if (!host->dma.chan) in atmci_prepare_data_dma()
1175 return -ENODEV; in atmci_prepare_data_dma()
1177 chan = host->dma.chan; in atmci_prepare_data_dma()
1178 host->data_chan = chan; in atmci_prepare_data_dma()
1180 if (data->flags & MMC_DATA_READ) { in atmci_prepare_data_dma()
1181 host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM; in atmci_prepare_data_dma()
1183 host->dma_conf.src_maxburst); in atmci_prepare_data_dma()
1185 host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV; in atmci_prepare_data_dma()
1187 host->dma_conf.dst_maxburst); in atmci_prepare_data_dma()
1190 if (host->caps.has_dma_conf_reg) in atmci_prepare_data_dma()
1194 sglen = dma_map_sg(chan->device->dev, data->sg, in atmci_prepare_data_dma()
1195 data->sg_len, mmc_get_dma_dir(data)); in atmci_prepare_data_dma()
1197 dmaengine_slave_config(chan, &host->dma_conf); in atmci_prepare_data_dma()
1199 data->sg, sglen, slave_dirn, in atmci_prepare_data_dma()
1204 host->dma.data_desc = desc; in atmci_prepare_data_dma()
1205 desc->callback = atmci_dma_complete; in atmci_prepare_data_dma()
1206 desc->callback_param = host; in atmci_prepare_data_dma()
1210 dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, in atmci_prepare_data_dma()
1212 return -ENOMEM; in atmci_prepare_data_dma()
1227 if (data->flags & MMC_DATA_READ) in atmci_submit_data_pdc()
1236 struct dma_chan *chan = host->data_chan; in atmci_submit_data_dma()
1237 struct dma_async_tx_descriptor *desc = host->dma.data_desc; in atmci_submit_data_dma()
1247 dev_dbg(&host->pdev->dev, in atmci_stop_transfer()
1263 struct dma_chan *chan = host->data_chan; in atmci_stop_transfer_dma()
1270 dev_dbg(&host->pdev->dev, in atmci_stop_transfer_dma()
1290 mrq = slot->mrq; in atmci_start_request()
1291 host->cur_slot = slot; in atmci_start_request()
1292 host->mrq = mrq; in atmci_start_request()
1294 host->pending_events = 0; in atmci_start_request()
1295 host->completed_events = 0; in atmci_start_request()
1296 host->cmd_status = 0; in atmci_start_request()
1297 host->data_status = 0; in atmci_start_request()
1299 dev_dbg(&host->pdev->dev, "start request: cmd %u\n", mrq->cmd->opcode); in atmci_start_request()
1301 if (host->need_reset || host->caps.need_reset_after_xfer) { in atmci_start_request()
1306 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_start_request()
1307 if (host->caps.has_cfg_reg) in atmci_start_request()
1308 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_start_request()
1310 host->need_reset = false; in atmci_start_request()
1312 atmci_writel(host, ATMCI_SDCR, slot->sdc_reg); in atmci_start_request()
1316 dev_dbg(&slot->mmc->class_dev, "WARNING: IMR=0x%08x\n", in atmci_start_request()
1319 if (unlikely(test_and_clear_bit(ATMCI_CARD_NEED_INIT, &slot->flags))) { in atmci_start_request()
1326 data = mrq->data; in atmci_start_request()
1331 atmci_writel(host, ATMCI_BLKR, ATMCI_BCNT(data->blocks) in atmci_start_request()
1332 | ATMCI_BLKLEN(data->blksz)); in atmci_start_request()
1333 dev_vdbg(&slot->mmc->class_dev, "BLKR=0x%08x\n", in atmci_start_request()
1334 ATMCI_BCNT(data->blocks) | ATMCI_BLKLEN(data->blksz)); in atmci_start_request()
1336 iflags |= host->prepare_data(host, data); in atmci_start_request()
1340 cmd = mrq->cmd; in atmci_start_request()
1341 cmdflags = atmci_prepare_command(slot->mmc, cmd); in atmci_start_request()
1349 if (host->submit_data != &atmci_submit_data_dma) in atmci_start_request()
1353 host->submit_data(host, data); in atmci_start_request()
1355 if (host->submit_data == &atmci_submit_data_dma) in atmci_start_request()
1358 if (mrq->stop) { in atmci_start_request()
1359 host->stop_cmdr = atmci_prepare_command(slot->mmc, mrq->stop); in atmci_start_request()
1360 host->stop_cmdr |= ATMCI_CMDR_STOP_XFER; in atmci_start_request()
1361 if (!(data->flags & MMC_DATA_WRITE)) in atmci_start_request()
1362 host->stop_cmdr |= ATMCI_CMDR_TRDIR_READ; in atmci_start_request()
1363 host->stop_cmdr |= ATMCI_CMDR_MULTI_BLOCK; in atmci_start_request()
1378 dev_vdbg(&slot->mmc->class_dev, "queue request: state=%d\n", in atmci_queue_request()
1379 host->state); in atmci_queue_request()
1381 spin_lock_bh(&host->lock); in atmci_queue_request()
1382 slot->mrq = mrq; in atmci_queue_request()
1383 if (host->state == STATE_IDLE) { in atmci_queue_request()
1384 host->state = STATE_SENDING_CMD; in atmci_queue_request()
1387 dev_dbg(&host->pdev->dev, "queue request\n"); in atmci_queue_request()
1388 list_add_tail(&slot->queue_node, &host->queue); in atmci_queue_request()
1390 spin_unlock_bh(&host->lock); in atmci_queue_request()
1396 struct atmel_mci *host = slot->host; in atmci_request()
1399 WARN_ON(slot->mrq); in atmci_request()
1400 dev_dbg(&host->pdev->dev, "MRQ: cmd %u\n", mrq->cmd->opcode); in atmci_request()
1410 if (!test_bit(ATMCI_CARD_PRESENT, &slot->flags)) { in atmci_request()
1411 mrq->cmd->error = -ENOMEDIUM; in atmci_request()
1417 data = mrq->data; in atmci_request()
1418 if (data && data->blocks > 1 && data->blksz & 3) { in atmci_request()
1419 mrq->cmd->error = -EINVAL; in atmci_request()
1429 struct atmel_mci *host = slot->host; in atmci_set_ios()
1432 slot->sdc_reg &= ~ATMCI_SDCBUS_MASK; in atmci_set_ios()
1433 switch (ios->bus_width) { in atmci_set_ios()
1435 slot->sdc_reg |= ATMCI_SDCBUS_1BIT; in atmci_set_ios()
1438 slot->sdc_reg |= ATMCI_SDCBUS_4BIT; in atmci_set_ios()
1441 slot->sdc_reg |= ATMCI_SDCBUS_8BIT; in atmci_set_ios()
1445 if (ios->clock) { in atmci_set_ios()
1449 spin_lock_bh(&host->lock); in atmci_set_ios()
1450 if (!host->mode_reg) { in atmci_set_ios()
1453 if (host->caps.has_cfg_reg) in atmci_set_ios()
1454 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_set_ios()
1458 * Use mirror of ios->clock to prevent race with mmc in atmci_set_ios()
1461 slot->clock = ios->clock; in atmci_set_ios()
1463 if (host->slot[i] && host->slot[i]->clock in atmci_set_ios()
1464 && host->slot[i]->clock < clock_min) in atmci_set_ios()
1465 clock_min = host->slot[i]->clock; in atmci_set_ios()
1469 if (host->caps.has_odd_clk_div) { in atmci_set_ios()
1470 clkdiv = DIV_ROUND_UP(host->bus_hz, clock_min) - 2; in atmci_set_ios()
1472 dev_warn(&mmc->class_dev, in atmci_set_ios()
1474 clock_min, host->bus_hz / 2); in atmci_set_ios()
1477 dev_warn(&mmc->class_dev, in atmci_set_ios()
1479 clock_min, host->bus_hz / (511 + 2)); in atmci_set_ios()
1482 host->mode_reg = ATMCI_MR_CLKDIV(clkdiv >> 1) in atmci_set_ios()
1485 clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * clock_min) - 1; in atmci_set_ios()
1487 dev_warn(&mmc->class_dev, in atmci_set_ios()
1489 clock_min, host->bus_hz / (2 * 256)); in atmci_set_ios()
1492 host->mode_reg = ATMCI_MR_CLKDIV(clkdiv); in atmci_set_ios()
1500 if (host->caps.has_rwproof) in atmci_set_ios()
1501 host->mode_reg |= (ATMCI_MR_WRPROOF | ATMCI_MR_RDPROOF); in atmci_set_ios()
1503 if (host->caps.has_cfg_reg) { in atmci_set_ios()
1505 if (ios->timing == MMC_TIMING_SD_HS) in atmci_set_ios()
1506 host->cfg_reg |= ATMCI_CFG_HSMODE; in atmci_set_ios()
1508 host->cfg_reg &= ~ATMCI_CFG_HSMODE; in atmci_set_ios()
1511 if (list_empty(&host->queue)) { in atmci_set_ios()
1512 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_set_ios()
1513 if (host->caps.has_cfg_reg) in atmci_set_ios()
1514 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_set_ios()
1516 host->need_clock_update = true; in atmci_set_ios()
1519 spin_unlock_bh(&host->lock); in atmci_set_ios()
1523 spin_lock_bh(&host->lock); in atmci_set_ios()
1524 slot->clock = 0; in atmci_set_ios()
1526 if (host->slot[i] && host->slot[i]->clock) { in atmci_set_ios()
1533 if (host->mode_reg) { in atmci_set_ios()
1536 host->mode_reg = 0; in atmci_set_ios()
1538 spin_unlock_bh(&host->lock); in atmci_set_ios()
1541 switch (ios->power_mode) { in atmci_set_ios()
1543 if (!IS_ERR(mmc->supply.vmmc)) in atmci_set_ios()
1544 mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); in atmci_set_ios()
1547 set_bit(ATMCI_CARD_NEED_INIT, &slot->flags); in atmci_set_ios()
1548 if (!IS_ERR(mmc->supply.vmmc)) in atmci_set_ios()
1549 mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd); in atmci_set_ios()
1558 int read_only = -ENOSYS; in atmci_get_ro()
1561 if (slot->wp_pin) { in atmci_get_ro()
1562 read_only = gpiod_get_value(slot->wp_pin); in atmci_get_ro()
1563 dev_dbg(&mmc->class_dev, "card is %s\n", in atmci_get_ro()
1564 read_only ? "read-only" : "read-write"); in atmci_get_ro()
1572 int present = -ENOSYS; in atmci_get_cd()
1575 if (slot->detect_pin) { in atmci_get_cd()
1576 present = gpiod_get_value_cansleep(slot->detect_pin); in atmci_get_cd()
1577 dev_dbg(&mmc->class_dev, "card is %spresent\n", in atmci_get_cd()
1587 struct atmel_mci *host = slot->host; in atmci_enable_sdio_irq()
1590 atmci_writel(host, ATMCI_IER, slot->sdio_irq); in atmci_enable_sdio_irq()
1592 atmci_writel(host, ATMCI_IDR, slot->sdio_irq); in atmci_enable_sdio_irq()
1603 /* Called with host->lock held */
1605 __releases(&host->lock) in atmci_request_end()
1606 __acquires(&host->lock) in atmci_request_end()
1609 struct mmc_host *prev_mmc = host->cur_slot->mmc; in atmci_request_end()
1611 WARN_ON(host->cmd || host->data); in atmci_request_end()
1613 del_timer(&host->timer); in atmci_request_end()
1620 if (host->need_clock_update) { in atmci_request_end()
1621 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_request_end()
1622 if (host->caps.has_cfg_reg) in atmci_request_end()
1623 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_request_end()
1626 host->cur_slot->mrq = NULL; in atmci_request_end()
1627 host->mrq = NULL; in atmci_request_end()
1628 if (!list_empty(&host->queue)) { in atmci_request_end()
1629 slot = list_entry(host->queue.next, in atmci_request_end()
1631 list_del(&slot->queue_node); in atmci_request_end()
1632 dev_vdbg(&host->pdev->dev, "list not empty: %s is next\n", in atmci_request_end()
1633 mmc_hostname(slot->mmc)); in atmci_request_end()
1634 host->state = STATE_SENDING_CMD; in atmci_request_end()
1637 dev_vdbg(&host->pdev->dev, "list empty\n"); in atmci_request_end()
1638 host->state = STATE_IDLE; in atmci_request_end()
1641 spin_unlock(&host->lock); in atmci_request_end()
1643 spin_lock(&host->lock); in atmci_request_end()
1649 u32 status = host->cmd_status; in atmci_command_complete()
1652 cmd->resp[0] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1653 cmd->resp[1] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1654 cmd->resp[2] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1655 cmd->resp[3] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1658 cmd->error = -ETIMEDOUT; in atmci_command_complete()
1659 else if ((cmd->flags & MMC_RSP_CRC) && (status & ATMCI_RCRCE)) in atmci_command_complete()
1660 cmd->error = -EILSEQ; in atmci_command_complete()
1662 cmd->error = -EIO; in atmci_command_complete()
1663 else if (host->mrq->data && (host->mrq->data->blksz & 3)) { in atmci_command_complete()
1664 if (host->caps.need_blksz_mul_4) { in atmci_command_complete()
1665 cmd->error = -EINVAL; in atmci_command_complete()
1666 host->need_reset = 1; in atmci_command_complete()
1669 cmd->error = 0; in atmci_command_complete()
1680 * freeing the interrupt. We must not re-enable the interrupt in atmci_detect_change()
1685 if (test_bit(ATMCI_SHUTDOWN, &slot->flags)) in atmci_detect_change()
1688 enable_irq(gpiod_to_irq(slot->detect_pin)); in atmci_detect_change()
1689 present = gpiod_get_value_cansleep(slot->detect_pin); in atmci_detect_change()
1690 present_old = test_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_detect_change()
1692 dev_vdbg(&slot->mmc->class_dev, "detect change: %d (was %d)\n", in atmci_detect_change()
1696 struct atmel_mci *host = slot->host; in atmci_detect_change()
1699 dev_dbg(&slot->mmc->class_dev, "card %s\n", in atmci_detect_change()
1702 spin_lock(&host->lock); in atmci_detect_change()
1705 clear_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_detect_change()
1707 set_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_detect_change()
1710 mrq = slot->mrq; in atmci_detect_change()
1712 if (mrq == host->mrq) { in atmci_detect_change()
1719 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_detect_change()
1720 if (host->caps.has_cfg_reg) in atmci_detect_change()
1721 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_detect_change()
1723 host->data = NULL; in atmci_detect_change()
1724 host->cmd = NULL; in atmci_detect_change()
1726 switch (host->state) { in atmci_detect_change()
1730 mrq->cmd->error = -ENOMEDIUM; in atmci_detect_change()
1731 if (mrq->data) in atmci_detect_change()
1732 host->stop_transfer(host); in atmci_detect_change()
1735 mrq->data->error = -ENOMEDIUM; in atmci_detect_change()
1736 host->stop_transfer(host); in atmci_detect_change()
1739 mrq->data->error = -ENOMEDIUM; in atmci_detect_change()
1742 mrq->stop->error = -ENOMEDIUM; in atmci_detect_change()
1750 list_del(&slot->queue_node); in atmci_detect_change()
1751 mrq->cmd->error = -ENOMEDIUM; in atmci_detect_change()
1752 if (mrq->data) in atmci_detect_change()
1753 mrq->data->error = -ENOMEDIUM; in atmci_detect_change()
1754 if (mrq->stop) in atmci_detect_change()
1755 mrq->stop->error = -ENOMEDIUM; in atmci_detect_change()
1757 spin_unlock(&host->lock); in atmci_detect_change()
1758 mmc_request_done(slot->mmc, mrq); in atmci_detect_change()
1759 spin_lock(&host->lock); in atmci_detect_change()
1762 spin_unlock(&host->lock); in atmci_detect_change()
1764 mmc_detect_change(slot->mmc, 0); in atmci_detect_change()
1771 struct mmc_request *mrq = host->mrq; in atmci_tasklet_func()
1772 struct mmc_data *data = host->data; in atmci_tasklet_func()
1773 enum atmel_mci_state state = host->state; in atmci_tasklet_func()
1777 spin_lock(&host->lock); in atmci_tasklet_func()
1779 state = host->state; in atmci_tasklet_func()
1781 dev_vdbg(&host->pdev->dev, in atmci_tasklet_func()
1783 state, host->pending_events, host->completed_events, in atmci_tasklet_func()
1788 dev_dbg(&host->pdev->dev, "FSM: state=%d\n", state); in atmci_tasklet_func()
1801 dev_dbg(&host->pdev->dev, "FSM: cmd ready?\n"); in atmci_tasklet_func()
1806 dev_dbg(&host->pdev->dev, "set completed cmd ready\n"); in atmci_tasklet_func()
1807 host->cmd = NULL; in atmci_tasklet_func()
1809 atmci_command_complete(host, mrq->cmd); in atmci_tasklet_func()
1810 if (mrq->data) { in atmci_tasklet_func()
1811 dev_dbg(&host->pdev->dev, in atmci_tasklet_func()
1817 if (mrq->cmd->error) { in atmci_tasklet_func()
1818 host->stop_transfer(host); in atmci_tasklet_func()
1819 host->data = NULL; in atmci_tasklet_func()
1826 } else if ((!mrq->data) && (mrq->cmd->flags & MMC_RSP_BUSY)) { in atmci_tasklet_func()
1827 dev_dbg(&host->pdev->dev, in atmci_tasklet_func()
1839 dev_dbg(&host->pdev->dev, "set completed data error\n"); in atmci_tasklet_func()
1852 dev_dbg(&host->pdev->dev, "FSM: xfer complete?\n"); in atmci_tasklet_func()
1857 dev_dbg(&host->pdev->dev, in atmci_tasklet_func()
1862 if (host->caps.need_notbusy_for_read_ops || in atmci_tasklet_func()
1863 (host->data->flags & MMC_DATA_WRITE)) { in atmci_tasklet_func()
1866 } else if (host->mrq->stop) { in atmci_tasklet_func()
1870 host->data = NULL; in atmci_tasklet_func()
1871 data->bytes_xfered = data->blocks * data->blksz; in atmci_tasklet_func()
1872 data->error = 0; in atmci_tasklet_func()
1884 dev_dbg(&host->pdev->dev, "FSM: not busy?\n"); in atmci_tasklet_func()
1889 dev_dbg(&host->pdev->dev, "set completed not busy\n"); in atmci_tasklet_func()
1892 if (host->data) { in atmci_tasklet_func()
1898 if (host->mrq->stop) { in atmci_tasklet_func()
1902 host->data = NULL; in atmci_tasklet_func()
1903 data->bytes_xfered = data->blocks in atmci_tasklet_func()
1904 * data->blksz; in atmci_tasklet_func()
1905 data->error = 0; in atmci_tasklet_func()
1914 * In this state, it is important to set host->data to in atmci_tasklet_func()
1919 dev_dbg(&host->pdev->dev, "FSM: cmd ready?\n"); in atmci_tasklet_func()
1924 dev_dbg(&host->pdev->dev, "FSM: cmd ready\n"); in atmci_tasklet_func()
1925 host->cmd = NULL; in atmci_tasklet_func()
1926 data->bytes_xfered = data->blocks * data->blksz; in atmci_tasklet_func()
1927 data->error = 0; in atmci_tasklet_func()
1928 atmci_command_complete(host, mrq->stop); in atmci_tasklet_func()
1929 if (mrq->stop->error) { in atmci_tasklet_func()
1930 host->stop_transfer(host); in atmci_tasklet_func()
1939 host->data = NULL; in atmci_tasklet_func()
1945 status = host->data_status; in atmci_tasklet_func()
1947 host->stop_transfer(host); in atmci_tasklet_func()
1948 host->data = NULL; in atmci_tasklet_func()
1951 data->error = -ETIMEDOUT; in atmci_tasklet_func()
1953 data->error = -EILSEQ; in atmci_tasklet_func()
1955 data->error = -EIO; in atmci_tasklet_func()
1960 atmci_request_end(host, host->mrq); in atmci_tasklet_func()
1961 goto unlock; /* atmci_request_end() sets host->state */ in atmci_tasklet_func()
1966 host->state = state; in atmci_tasklet_func()
1969 spin_unlock(&host->lock); in atmci_tasklet_func()
1974 struct scatterlist *sg = host->sg; in atmci_read_data_pio()
1975 unsigned int offset = host->pio_offset; in atmci_read_data_pio()
1976 struct mmc_data *data = host->data; in atmci_read_data_pio()
1983 if (likely(offset + 4 <= sg->length)) { in atmci_read_data_pio()
1989 if (offset == sg->length) { in atmci_read_data_pio()
1991 host->sg = sg = sg_next(sg); in atmci_read_data_pio()
1992 host->sg_len--; in atmci_read_data_pio()
1993 if (!sg || !host->sg_len) in atmci_read_data_pio()
1999 unsigned int remaining = sg->length - offset; in atmci_read_data_pio()
2005 host->sg = sg = sg_next(sg); in atmci_read_data_pio()
2006 host->sg_len--; in atmci_read_data_pio()
2007 if (!sg || !host->sg_len) in atmci_read_data_pio()
2010 offset = 4 - remaining; in atmci_read_data_pio()
2020 host->data_status = status; in atmci_read_data_pio()
2021 data->bytes_xfered += nbytes; in atmci_read_data_pio()
2026 host->pio_offset = offset; in atmci_read_data_pio()
2027 data->bytes_xfered += nbytes; in atmci_read_data_pio()
2034 data->bytes_xfered += nbytes; in atmci_read_data_pio()
2041 struct scatterlist *sg = host->sg; in atmci_write_data_pio()
2042 unsigned int offset = host->pio_offset; in atmci_write_data_pio()
2043 struct mmc_data *data = host->data; in atmci_write_data_pio()
2049 if (likely(offset + 4 <= sg->length)) { in atmci_write_data_pio()
2055 if (offset == sg->length) { in atmci_write_data_pio()
2056 host->sg = sg = sg_next(sg); in atmci_write_data_pio()
2057 host->sg_len--; in atmci_write_data_pio()
2058 if (!sg || !host->sg_len) in atmci_write_data_pio()
2064 unsigned int remaining = sg->length - offset; in atmci_write_data_pio()
2070 host->sg = sg = sg_next(sg); in atmci_write_data_pio()
2071 host->sg_len--; in atmci_write_data_pio()
2072 if (!sg || !host->sg_len) { in atmci_write_data_pio()
2077 offset = 4 - remaining; in atmci_write_data_pio()
2088 host->data_status = status; in atmci_write_data_pio()
2089 data->bytes_xfered += nbytes; in atmci_write_data_pio()
2094 host->pio_offset = offset; in atmci_write_data_pio()
2095 data->bytes_xfered += nbytes; in atmci_write_data_pio()
2102 data->bytes_xfered += nbytes; in atmci_write_data_pio()
2112 struct atmel_mci_slot *slot = host->slot[i]; in atmci_sdio_interrupt()
2113 if (slot && (status & slot->sdio_irq)) { in atmci_sdio_interrupt()
2114 mmc_signal_sdio_irq(slot->mmc); in atmci_sdio_interrupt()
2134 dev_dbg(&host->pdev->dev, "IRQ: data error\n"); in atmci_interrupt()
2140 host->data_status = status; in atmci_interrupt()
2141 dev_dbg(&host->pdev->dev, "set pending data error\n"); in atmci_interrupt()
2144 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2148 dev_dbg(&host->pdev->dev, "IRQ: tx buffer empty\n"); in atmci_interrupt()
2156 if (host->data_size) { in atmci_interrupt()
2164 dev_dbg(&host->pdev->dev, "IRQ: end of tx buffer\n"); in atmci_interrupt()
2167 if (host->data_size) { in atmci_interrupt()
2175 dev_dbg(&host->pdev->dev, "IRQ: rx buffer full\n"); in atmci_interrupt()
2183 if (host->data_size) { in atmci_interrupt()
2191 dev_dbg(&host->pdev->dev, "IRQ: end of rx buffer\n"); in atmci_interrupt()
2194 if (host->data_size) { in atmci_interrupt()
2208 dev_dbg(&host->pdev->dev, "IRQ: blke\n"); in atmci_interrupt()
2211 dev_dbg(&host->pdev->dev, "set pending notbusy\n"); in atmci_interrupt()
2213 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2217 dev_dbg(&host->pdev->dev, "IRQ: not_busy\n"); in atmci_interrupt()
2220 dev_dbg(&host->pdev->dev, "set pending notbusy\n"); in atmci_interrupt()
2222 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2231 dev_dbg(&host->pdev->dev, "IRQ: cmd ready\n"); in atmci_interrupt()
2233 host->cmd_status = status; in atmci_interrupt()
2235 dev_dbg(&host->pdev->dev, "set pending cmd rdy\n"); in atmci_interrupt()
2237 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2258 mod_timer(&slot->detect_timer, jiffies + msecs_to_jiffies(20)); in atmci_detect_interrupt()
2271 mmc = mmc_alloc_host(sizeof(struct atmel_mci_slot), &host->pdev->dev); in atmci_init_slot()
2273 return -ENOMEM; in atmci_init_slot()
2276 slot->mmc = mmc; in atmci_init_slot()
2277 slot->host = host; in atmci_init_slot()
2278 slot->detect_pin = slot_data->detect_pin; in atmci_init_slot()
2279 slot->wp_pin = slot_data->wp_pin; in atmci_init_slot()
2280 slot->sdc_reg = sdc_reg; in atmci_init_slot()
2281 slot->sdio_irq = sdio_irq; in atmci_init_slot()
2283 dev_dbg(&mmc->class_dev, in atmci_init_slot()
2286 id, slot_data->bus_width, desc_to_gpio(slot_data->detect_pin), in atmci_init_slot()
2287 !gpiod_is_active_low(slot_data->detect_pin) ? "true" : "false", in atmci_init_slot()
2288 desc_to_gpio(slot_data->wp_pin)); in atmci_init_slot()
2290 mmc->ops = &atmci_ops; in atmci_init_slot()
2291 mmc->f_min = DIV_ROUND_UP(host->bus_hz, 512); in atmci_init_slot()
2292 mmc->f_max = host->bus_hz / 2; in atmci_init_slot()
2293 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; in atmci_init_slot()
2295 mmc->caps |= MMC_CAP_SDIO_IRQ; in atmci_init_slot()
2296 if (host->caps.has_highspeed) in atmci_init_slot()
2297 mmc->caps |= MMC_CAP_SD_HIGHSPEED; in atmci_init_slot()
2303 if ((slot_data->bus_width >= 4) && host->caps.has_rwproof) { in atmci_init_slot()
2304 mmc->caps |= MMC_CAP_4_BIT_DATA; in atmci_init_slot()
2305 if (slot_data->bus_width >= 8) in atmci_init_slot()
2306 mmc->caps |= MMC_CAP_8_BIT_DATA; in atmci_init_slot()
2310 mmc->max_segs = 256; in atmci_init_slot()
2311 mmc->max_blk_size = 4095; in atmci_init_slot()
2312 mmc->max_blk_count = 256; in atmci_init_slot()
2313 mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; in atmci_init_slot()
2314 mmc->max_seg_size = mmc->max_blk_size * mmc->max_segs; in atmci_init_slot()
2316 mmc->max_segs = 64; in atmci_init_slot()
2317 mmc->max_req_size = 32768 * 512; in atmci_init_slot()
2318 mmc->max_blk_size = 32768; in atmci_init_slot()
2319 mmc->max_blk_count = 512; in atmci_init_slot()
2323 set_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_init_slot()
2324 if (slot->detect_pin) { in atmci_init_slot()
2325 if (!gpiod_get_value_cansleep(slot->detect_pin)) in atmci_init_slot()
2326 clear_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_init_slot()
2328 dev_dbg(&mmc->class_dev, "no detect pin available\n"); in atmci_init_slot()
2331 if (!slot->detect_pin) { in atmci_init_slot()
2332 if (slot_data->non_removable) in atmci_init_slot()
2333 mmc->caps |= MMC_CAP_NONREMOVABLE; in atmci_init_slot()
2335 mmc->caps |= MMC_CAP_NEEDS_POLL; in atmci_init_slot()
2338 if (!slot->wp_pin) in atmci_init_slot()
2339 dev_dbg(&mmc->class_dev, "no WP pin available\n"); in atmci_init_slot()
2341 host->slot[id] = slot; in atmci_init_slot()
2349 if (slot->detect_pin) { in atmci_init_slot()
2350 timer_setup(&slot->detect_timer, atmci_detect_change, 0); in atmci_init_slot()
2352 ret = request_irq(gpiod_to_irq(slot->detect_pin), in atmci_init_slot()
2355 "mmc-detect", slot); in atmci_init_slot()
2357 dev_dbg(&mmc->class_dev, in atmci_init_slot()
2359 gpiod_to_irq(slot->detect_pin)); in atmci_init_slot()
2360 slot->detect_pin = NULL; in atmci_init_slot()
2374 set_bit(ATMCI_SHUTDOWN, &slot->flags); in atmci_cleanup_slot()
2377 mmc_remove_host(slot->mmc); in atmci_cleanup_slot()
2379 if (slot->detect_pin) { in atmci_cleanup_slot()
2380 free_irq(gpiod_to_irq(slot->detect_pin), slot); in atmci_cleanup_slot()
2381 del_timer_sync(&slot->detect_timer); in atmci_cleanup_slot()
2384 slot->host->slot[id] = NULL; in atmci_cleanup_slot()
2385 mmc_free_host(slot->mmc); in atmci_cleanup_slot()
2390 host->dma.chan = dma_request_chan(&host->pdev->dev, "rxtx"); in atmci_configure_dma()
2392 if (PTR_ERR(host->dma.chan) == -ENODEV) { in atmci_configure_dma()
2393 struct mci_platform_data *pdata = host->pdev->dev.platform_data; in atmci_configure_dma()
2396 if (!pdata || !pdata->dma_filter) in atmci_configure_dma()
2397 return -ENODEV; in atmci_configure_dma()
2402 host->dma.chan = dma_request_channel(mask, pdata->dma_filter, in atmci_configure_dma()
2403 pdata->dma_slave); in atmci_configure_dma()
2404 if (!host->dma.chan) in atmci_configure_dma()
2405 host->dma.chan = ERR_PTR(-ENODEV); in atmci_configure_dma()
2408 if (IS_ERR(host->dma.chan)) in atmci_configure_dma()
2409 return PTR_ERR(host->dma.chan); in atmci_configure_dma()
2411 dev_info(&host->pdev->dev, "using %s for DMA transfers\n", in atmci_configure_dma()
2412 dma_chan_name(host->dma.chan)); in atmci_configure_dma()
2414 host->dma_conf.src_addr = host->mapbase + ATMCI_RDR; in atmci_configure_dma()
2415 host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; in atmci_configure_dma()
2416 host->dma_conf.src_maxburst = 1; in atmci_configure_dma()
2417 host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR; in atmci_configure_dma()
2418 host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; in atmci_configure_dma()
2419 host->dma_conf.dst_maxburst = 1; in atmci_configure_dma()
2420 host->dma_conf.device_fc = false; in atmci_configure_dma()
2435 dev_info(&host->pdev->dev, in atmci_get_cap()
2438 host->caps.has_dma_conf_reg = false; in atmci_get_cap()
2439 host->caps.has_pdc = true; in atmci_get_cap()
2440 host->caps.has_cfg_reg = false; in atmci_get_cap()
2441 host->caps.has_cstor_reg = false; in atmci_get_cap()
2442 host->caps.has_highspeed = false; in atmci_get_cap()
2443 host->caps.has_rwproof = false; in atmci_get_cap()
2444 host->caps.has_odd_clk_div = false; in atmci_get_cap()
2445 host->caps.has_bad_data_ordering = true; in atmci_get_cap()
2446 host->caps.need_reset_after_xfer = true; in atmci_get_cap()
2447 host->caps.need_blksz_mul_4 = true; in atmci_get_cap()
2448 host->caps.need_notbusy_for_read_ops = false; in atmci_get_cap()
2454 host->caps.has_odd_clk_div = true; in atmci_get_cap()
2458 host->caps.has_dma_conf_reg = true; in atmci_get_cap()
2459 host->caps.has_pdc = false; in atmci_get_cap()
2460 host->caps.has_cfg_reg = true; in atmci_get_cap()
2461 host->caps.has_cstor_reg = true; in atmci_get_cap()
2462 host->caps.has_highspeed = true; in atmci_get_cap()
2465 host->caps.has_rwproof = true; in atmci_get_cap()
2466 host->caps.need_blksz_mul_4 = false; in atmci_get_cap()
2467 host->caps.need_notbusy_for_read_ops = true; in atmci_get_cap()
2470 host->caps.has_bad_data_ordering = false; in atmci_get_cap()
2471 host->caps.need_reset_after_xfer = false; in atmci_get_cap()
2476 host->caps.has_pdc = false; in atmci_get_cap()
2477 dev_warn(&host->pdev->dev, in atmci_get_cap()
2494 return -ENXIO; in atmci_probe()
2495 pdata = pdev->dev.platform_data; in atmci_probe()
2499 dev_err(&pdev->dev, "platform data not available\n"); in atmci_probe()
2508 host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); in atmci_probe()
2510 return -ENOMEM; in atmci_probe()
2512 host->pdev = pdev; in atmci_probe()
2513 spin_lock_init(&host->lock); in atmci_probe()
2514 INIT_LIST_HEAD(&host->queue); in atmci_probe()
2516 host->mck = devm_clk_get(&pdev->dev, "mci_clk"); in atmci_probe()
2517 if (IS_ERR(host->mck)) in atmci_probe()
2518 return PTR_ERR(host->mck); in atmci_probe()
2520 host->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); in atmci_probe()
2521 if (!host->regs) in atmci_probe()
2522 return -ENOMEM; in atmci_probe()
2524 ret = clk_prepare_enable(host->mck); in atmci_probe()
2529 host->bus_hz = clk_get_rate(host->mck); in atmci_probe()
2531 host->mapbase = regs->start; in atmci_probe()
2533 tasklet_setup(&host->tasklet, atmci_tasklet_func); in atmci_probe()
2535 ret = request_irq(irq, atmci_interrupt, 0, dev_name(&pdev->dev), host); in atmci_probe()
2537 clk_disable_unprepare(host->mck); in atmci_probe()
2544 if (ret == -EPROBE_DEFER) in atmci_probe()
2547 host->prepare_data = &atmci_prepare_data_dma; in atmci_probe()
2548 host->submit_data = &atmci_submit_data_dma; in atmci_probe()
2549 host->stop_transfer = &atmci_stop_transfer_dma; in atmci_probe()
2550 } else if (host->caps.has_pdc) { in atmci_probe()
2551 dev_info(&pdev->dev, "using PDC\n"); in atmci_probe()
2552 host->prepare_data = &atmci_prepare_data_pdc; in atmci_probe()
2553 host->submit_data = &atmci_submit_data_pdc; in atmci_probe()
2554 host->stop_transfer = &atmci_stop_transfer_pdc; in atmci_probe()
2556 dev_info(&pdev->dev, "using PIO\n"); in atmci_probe()
2557 host->prepare_data = &atmci_prepare_data; in atmci_probe()
2558 host->submit_data = &atmci_submit_data; in atmci_probe()
2559 host->stop_transfer = &atmci_stop_transfer; in atmci_probe()
2564 timer_setup(&host->timer, atmci_timeout_timer, 0); in atmci_probe()
2566 pm_runtime_get_noresume(&pdev->dev); in atmci_probe()
2567 pm_runtime_set_active(&pdev->dev); in atmci_probe()
2568 pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_DELAY); in atmci_probe()
2569 pm_runtime_use_autosuspend(&pdev->dev); in atmci_probe()
2570 pm_runtime_enable(&pdev->dev); in atmci_probe()
2574 ret = -ENODEV; in atmci_probe()
2575 if (pdata->slot[0].bus_width) { in atmci_probe()
2576 ret = atmci_init_slot(host, &pdata->slot[0], in atmci_probe()
2580 host->buf_size = host->slot[0]->mmc->max_req_size; in atmci_probe()
2583 if (pdata->slot[1].bus_width) { in atmci_probe()
2584 ret = atmci_init_slot(host, &pdata->slot[1], in atmci_probe()
2588 if (host->slot[1]->mmc->max_req_size > host->buf_size) in atmci_probe()
2589 host->buf_size = in atmci_probe()
2590 host->slot[1]->mmc->max_req_size; in atmci_probe()
2595 dev_err(&pdev->dev, "init failed: no slot defined\n"); in atmci_probe()
2599 if (!host->caps.has_rwproof) { in atmci_probe()
2600 host->buffer = dma_alloc_coherent(&pdev->dev, host->buf_size, in atmci_probe()
2601 &host->buf_phys_addr, in atmci_probe()
2603 if (!host->buffer) { in atmci_probe()
2604 ret = -ENOMEM; in atmci_probe()
2605 dev_err(&pdev->dev, "buffer allocation failed\n"); in atmci_probe()
2610 dev_info(&pdev->dev, in atmci_probe()
2612 host->mapbase, irq, nr_slots); in atmci_probe()
2614 pm_runtime_mark_last_busy(&host->pdev->dev); in atmci_probe()
2615 pm_runtime_put_autosuspend(&pdev->dev); in atmci_probe()
2621 if (host->slot[i]) in atmci_probe()
2622 atmci_cleanup_slot(host->slot[i], i); in atmci_probe()
2625 clk_disable_unprepare(host->mck); in atmci_probe()
2627 pm_runtime_disable(&pdev->dev); in atmci_probe()
2628 pm_runtime_put_noidle(&pdev->dev); in atmci_probe()
2630 del_timer_sync(&host->timer); in atmci_probe()
2631 if (!IS_ERR(host->dma.chan)) in atmci_probe()
2632 dma_release_channel(host->dma.chan); in atmci_probe()
2643 pm_runtime_get_sync(&pdev->dev); in atmci_remove()
2645 if (host->buffer) in atmci_remove()
2646 dma_free_coherent(&pdev->dev, host->buf_size, in atmci_remove()
2647 host->buffer, host->buf_phys_addr); in atmci_remove()
2650 if (host->slot[i]) in atmci_remove()
2651 atmci_cleanup_slot(host->slot[i], i); in atmci_remove()
2658 del_timer_sync(&host->timer); in atmci_remove()
2659 if (!IS_ERR(host->dma.chan)) in atmci_remove()
2660 dma_release_channel(host->dma.chan); in atmci_remove()
2664 clk_disable_unprepare(host->mck); in atmci_remove()
2666 pm_runtime_disable(&pdev->dev); in atmci_remove()
2667 pm_runtime_put_noidle(&pdev->dev); in atmci_remove()
2675 clk_disable_unprepare(host->mck); in atmci_runtime_suspend()
2688 return clk_prepare_enable(host->mck); in atmci_runtime_resume()