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
230 * @slot: Per-slot configuration data.
258 * struct atmel_mci - MMC controller state shared between all slots
271 * or NULL if the controller is idle.
275 * @data_size: just data->blocks * data->blksz.
279 * @cmd_status: Snapshot of SR taken upon completion of the current
281 * @data_status: Snapshot of SR taken upon completion of the current
315 * @lock is a softirq-safe spinlock protecting @queue as well as
332 * EVENT_DATA_COMPLETE is set in @pending_events, all data-related
334 * snapshot of SR. Similarly, before EVENT_CMD_COMPLETE is set, the
336 * snapshot of SR, and before EVENT_XFER_COMPLETE can be set, the
391 * struct atmel_mci_slot - MMC slot state
397 * processed, or NULL when the slot is idle.
400 * @clock: Clock rate configured by set_ios(). Protected by host->lock.
431 test_and_clear_bit(event, &host->pending_events)
433 set_bit(event, &host->completed_events)
435 set_bit(event, &host->pending_events)
443 struct atmel_mci_slot *slot = s->private; in atmci_req_show()
450 spin_lock_bh(&slot->host->lock); in atmci_req_show()
451 mrq = slot->mrq; in atmci_req_show()
454 cmd = mrq->cmd; in atmci_req_show()
455 data = mrq->data; in atmci_req_show()
456 stop = mrq->stop; in atmci_req_show()
461 cmd->opcode, cmd->arg, cmd->flags, in atmci_req_show()
462 cmd->resp[0], cmd->resp[1], cmd->resp[2], in atmci_req_show()
463 cmd->resp[3], cmd->error); in atmci_req_show()
466 data->bytes_xfered, data->blocks, in atmci_req_show()
467 data->blksz, data->flags, data->error); in atmci_req_show()
471 stop->opcode, stop->arg, stop->flags, in atmci_req_show()
472 stop->resp[0], stop->resp[1], stop->resp[2], in atmci_req_show()
473 stop->resp[3], stop->error); in atmci_req_show()
476 spin_unlock_bh(&slot->host->lock); in atmci_req_show()
531 struct atmel_mci *host = s->private; in atmci_regs_show()
538 return -ENOMEM; in atmci_regs_show()
540 pm_runtime_get_sync(&host->pdev->dev); in atmci_regs_show()
544 * not disabling interrupts, so IMR and SR may not be in atmci_regs_show()
547 spin_lock_bh(&host->lock); in atmci_regs_show()
548 memcpy_fromio(buf, host->regs, ATMCI_REGS_SIZE); in atmci_regs_show()
549 spin_unlock_bh(&host->lock); in atmci_regs_show()
551 pm_runtime_mark_last_busy(&host->pdev->dev); in atmci_regs_show()
552 pm_runtime_put_autosuspend(&host->pdev->dev); in atmci_regs_show()
558 if (host->caps.has_odd_clk_div) in atmci_regs_show()
572 if (host->caps.has_cstor_reg) in atmci_regs_show()
577 atmci_show_status_reg(s, "SR", buf[ATMCI_SR / 4]); in atmci_regs_show()
580 if (host->caps.has_dma_conf_reg) { in atmci_regs_show()
590 if (host->caps.has_cfg_reg) { in atmci_regs_show()
611 struct mmc_host *mmc = slot->mmc; in atmci_init_debugfs()
612 struct atmel_mci *host = slot->host; in atmci_init_debugfs()
615 root = mmc->debugfs_root; in atmci_init_debugfs()
621 debugfs_create_u32("state", S_IRUSR, root, &host->state); in atmci_init_debugfs()
623 &host->pending_events); in atmci_init_debugfs()
625 &host->completed_events); in atmci_init_debugfs()
639 struct device_node *np = pdev->dev.of_node; in atmci_of_init()
646 dev_err(&pdev->dev, "device node not found\n"); in atmci_of_init()
647 return ERR_PTR(-EINVAL); in atmci_of_init()
650 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in atmci_of_init()
652 return ERR_PTR(-ENOMEM); in atmci_of_init()
656 dev_warn(&pdev->dev, "reg property is missing for %pOF\n", in atmci_of_init()
662 dev_warn(&pdev->dev, "can't have more than %d slots\n", in atmci_of_init()
668 if (of_property_read_u32(cnp, "bus-width", in atmci_of_init()
669 &pdata->slot[slot_id].bus_width)) in atmci_of_init()
670 pdata->slot[slot_id].bus_width = 1; in atmci_of_init()
672 pdata->slot[slot_id].detect_pin = in atmci_of_init()
673 devm_fwnode_gpiod_get(&pdev->dev, of_fwnode_handle(cnp), in atmci_of_init()
674 "cd", GPIOD_IN, "cd-gpios"); in atmci_of_init()
675 err = PTR_ERR_OR_ZERO(pdata->slot[slot_id].detect_pin); in atmci_of_init()
677 if (err != -ENOENT) in atmci_of_init()
679 pdata->slot[slot_id].detect_pin = NULL; in atmci_of_init()
682 pdata->slot[slot_id].non_removable = in atmci_of_init()
683 of_property_read_bool(cnp, "non-removable"); in atmci_of_init()
685 pdata->slot[slot_id].wp_pin = in atmci_of_init()
686 devm_fwnode_gpiod_get(&pdev->dev, of_fwnode_handle(cnp), in atmci_of_init()
687 "wp", GPIOD_IN, "wp-gpios"); in atmci_of_init()
688 err = PTR_ERR_OR_ZERO(pdata->slot[slot_id].wp_pin); in atmci_of_init()
690 if (err != -ENOENT) in atmci_of_init()
692 pdata->slot[slot_id].wp_pin = NULL; in atmci_of_init()
702 return ERR_PTR(-EINVAL); in atmci_of_init()
713 * 1 -> 0, 4 -> 1, 8 -> 2, 16 -> 3.
714 * With version 0x600, we need to convert them as: 1 -> 0, 2 -> 1, 4 -> 2,
715 * 8 -> 3, 16 -> 4.
729 return fls(maxburst) - offset; in atmci_convert_chksize()
740 dev_dbg(&host->pdev->dev, "software timeout\n"); in atmci_timeout_timer()
742 if (host->mrq->cmd->data) { in atmci_timeout_timer()
743 host->mrq->cmd->data->error = -ETIMEDOUT; in atmci_timeout_timer()
744 host->data = NULL; in atmci_timeout_timer()
750 if (host->state == STATE_DATA_XFER) in atmci_timeout_timer()
751 host->stop_transfer(host); in atmci_timeout_timer()
753 host->mrq->cmd->error = -ETIMEDOUT; in atmci_timeout_timer()
754 host->cmd = NULL; in atmci_timeout_timer()
756 host->need_reset = 1; in atmci_timeout_timer()
757 host->state = STATE_END_REQUEST; in atmci_timeout_timer()
759 tasklet_schedule(&host->tasklet); in atmci_timeout_timer()
763 unsigned int ns) in atmci_ns_to_clocks() argument
766 * It is easier here to use us instead of ns for the timeout, in atmci_ns_to_clocks()
769 unsigned int us = DIV_ROUND_UP(ns, 1000); in atmci_ns_to_clocks()
771 /* Maximum clock frequency is host->bus_hz/2 */ in atmci_ns_to_clocks()
772 return us * (DIV_ROUND_UP(host->bus_hz, 2000000)); in atmci_ns_to_clocks()
785 timeout = atmci_ns_to_clocks(host, data->timeout_ns) in atmci_set_timeout()
786 + data->timeout_clks; in atmci_set_timeout()
790 dtocyc = (timeout + (1 << shift) - 1) >> shift; in atmci_set_timeout()
800 dev_vdbg(&slot->mmc->class_dev, "setting timeout to %u cycles\n", in atmci_set_timeout()
814 cmd->error = -EINPROGRESS; in atmci_prepare_command()
816 cmdr = ATMCI_CMDR_CMDNB(cmd->opcode); in atmci_prepare_command()
818 if (cmd->flags & MMC_RSP_PRESENT) { in atmci_prepare_command()
819 if (cmd->flags & MMC_RSP_136) in atmci_prepare_command()
832 if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN) in atmci_prepare_command()
835 data = cmd->data; in atmci_prepare_command()
839 if (cmd->opcode == SD_IO_RW_EXTENDED) { in atmci_prepare_command()
842 if (data->blocks > 1) in atmci_prepare_command()
848 if (data->flags & MMC_DATA_READ) in atmci_prepare_command()
858 unsigned int timeout_ms = cmd->busy_timeout ? cmd->busy_timeout : in atmci_send_command()
861 WARN_ON(host->cmd); in atmci_send_command()
862 host->cmd = cmd; in atmci_send_command()
864 dev_vdbg(&host->pdev->dev, in atmci_send_command()
866 cmd->arg, cmd_flags); in atmci_send_command()
868 atmci_writel(host, ATMCI_ARGR, cmd->arg); in atmci_send_command()
871 mod_timer(&host->timer, jiffies + msecs_to_jiffies(timeout_ms)); in atmci_send_command()
876 dev_dbg(&host->pdev->dev, "send stop command\n"); in atmci_send_stop_cmd()
877 atmci_send_command(host, data->stop, host->stop_cmdr); in atmci_send_stop_cmd()
883 * Update host->data_size and host->sg.
904 if (!host->caps.has_rwproof) { in atmci_pdc_set_single_buf()
905 buf_size = host->buf_size; in atmci_pdc_set_single_buf()
906 atmci_writel(host, pointer_reg, host->buf_phys_addr); in atmci_pdc_set_single_buf()
908 buf_size = sg_dma_len(host->sg); in atmci_pdc_set_single_buf()
909 atmci_writel(host, pointer_reg, sg_dma_address(host->sg)); in atmci_pdc_set_single_buf()
912 if (host->data_size <= buf_size) { in atmci_pdc_set_single_buf()
913 if (host->data_size & 0x3) { in atmci_pdc_set_single_buf()
915 atmci_writel(host, counter_reg, host->data_size); in atmci_pdc_set_single_buf()
916 atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCFBYTE); in atmci_pdc_set_single_buf()
918 /* Else transfer 32-bits words */ in atmci_pdc_set_single_buf()
919 atmci_writel(host, counter_reg, host->data_size / 4); in atmci_pdc_set_single_buf()
921 host->data_size = 0; in atmci_pdc_set_single_buf()
923 /* We assume the size of a page is 32-bits aligned */ in atmci_pdc_set_single_buf()
924 atmci_writel(host, counter_reg, sg_dma_len(host->sg) / 4); in atmci_pdc_set_single_buf()
925 host->data_size -= sg_dma_len(host->sg); in atmci_pdc_set_single_buf()
926 if (host->data_size) in atmci_pdc_set_single_buf()
927 host->sg = sg_next(host->sg); in atmci_pdc_set_single_buf()
939 if (host->data_size) in atmci_pdc_set_both_buf()
948 struct mmc_data *data = host->data; in atmci_pdc_cleanup()
951 dma_unmap_sg(&host->pdev->dev, in atmci_pdc_cleanup()
952 data->sg, data->sg_len, in atmci_pdc_cleanup()
963 int transfer_size = host->data->blocks * host->data->blksz; in atmci_pdc_complete()
968 if ((!host->caps.has_rwproof) in atmci_pdc_complete()
969 && (host->data->flags & MMC_DATA_READ)) { in atmci_pdc_complete()
970 if (host->caps.has_bad_data_ordering) in atmci_pdc_complete()
972 host->buffer[i] = swab32(host->buffer[i]); in atmci_pdc_complete()
973 sg_copy_from_buffer(host->data->sg, host->data->sg_len, in atmci_pdc_complete()
974 host->buffer, transfer_size); in atmci_pdc_complete()
979 dev_dbg(&host->pdev->dev, "(%s) set pending xfer complete\n", __func__); in atmci_pdc_complete()
981 tasklet_schedule(&host->tasklet); in atmci_pdc_complete()
986 struct mmc_data *data = host->data; in atmci_dma_cleanup()
989 dma_unmap_sg(host->dma.chan->device->dev, in atmci_dma_cleanup()
990 data->sg, data->sg_len, in atmci_dma_cleanup()
1000 struct mmc_data *data = host->data; in atmci_dma_complete()
1002 dev_vdbg(&host->pdev->dev, "DMA complete\n"); in atmci_dma_complete()
1004 if (host->caps.has_dma_conf_reg) in atmci_dma_complete()
1015 dev_dbg(&host->pdev->dev, in atmci_dma_complete()
1018 tasklet_schedule(&host->tasklet); in atmci_dma_complete()
1052 data->error = -EINPROGRESS; in atmci_prepare_data()
1054 host->sg = data->sg; in atmci_prepare_data()
1055 host->sg_len = data->sg_len; in atmci_prepare_data()
1056 host->data = data; in atmci_prepare_data()
1057 host->data_chan = NULL; in atmci_prepare_data()
1068 if (data->blocks * data->blksz < 12 in atmci_prepare_data()
1069 || (data->blocks * data->blksz) & 3) in atmci_prepare_data()
1070 host->need_reset = true; in atmci_prepare_data()
1072 host->pio_offset = 0; in atmci_prepare_data()
1073 if (data->flags & MMC_DATA_READ) in atmci_prepare_data()
1093 data->error = -EINPROGRESS; in atmci_prepare_data_pdc()
1095 host->data = data; in atmci_prepare_data_pdc()
1096 host->sg = data->sg; in atmci_prepare_data_pdc()
1100 atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCMODE); in atmci_prepare_data_pdc()
1102 if (data->flags & MMC_DATA_READ) in atmci_prepare_data_pdc()
1110 tmp |= ATMCI_BLKLEN(data->blksz); in atmci_prepare_data_pdc()
1114 host->data_size = data->blocks * data->blksz; in atmci_prepare_data_pdc()
1115 dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, in atmci_prepare_data_pdc()
1118 if ((!host->caps.has_rwproof) in atmci_prepare_data_pdc()
1119 && (host->data->flags & MMC_DATA_WRITE)) { in atmci_prepare_data_pdc()
1120 sg_copy_to_buffer(host->data->sg, host->data->sg_len, in atmci_prepare_data_pdc()
1121 host->buffer, host->data_size); in atmci_prepare_data_pdc()
1122 if (host->caps.has_bad_data_ordering) in atmci_prepare_data_pdc()
1123 for (i = 0; i < host->data_size; i++) in atmci_prepare_data_pdc()
1124 host->buffer[i] = swab32(host->buffer[i]); in atmci_prepare_data_pdc()
1127 if (host->data_size) in atmci_prepare_data_pdc()
1128 atmci_pdc_set_both_buf(host, data->flags & MMC_DATA_READ ? in atmci_prepare_data_pdc()
1145 data->error = -EINPROGRESS; in atmci_prepare_data_dma()
1147 WARN_ON(host->data); in atmci_prepare_data_dma()
1148 host->sg = NULL; in atmci_prepare_data_dma()
1149 host->data = data; in atmci_prepare_data_dma()
1155 * non-word-aligned buffers or lengths. Also, we don't bother in atmci_prepare_data_dma()
1158 if (data->blocks * data->blksz < ATMCI_DMA_THRESHOLD) in atmci_prepare_data_dma()
1160 if (data->blksz & 3) in atmci_prepare_data_dma()
1163 for_each_sg(data->sg, sg, data->sg_len, i) { in atmci_prepare_data_dma()
1164 if (sg->offset & 3 || sg->length & 3) in atmci_prepare_data_dma()
1169 if (!host->dma.chan) in atmci_prepare_data_dma()
1170 return -ENODEV; in atmci_prepare_data_dma()
1172 chan = host->dma.chan; in atmci_prepare_data_dma()
1173 host->data_chan = chan; in atmci_prepare_data_dma()
1175 if (data->flags & MMC_DATA_READ) { in atmci_prepare_data_dma()
1176 host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM; in atmci_prepare_data_dma()
1178 host->dma_conf.src_maxburst); in atmci_prepare_data_dma()
1180 host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV; in atmci_prepare_data_dma()
1182 host->dma_conf.dst_maxburst); in atmci_prepare_data_dma()
1185 if (host->caps.has_dma_conf_reg) in atmci_prepare_data_dma()
1189 sglen = dma_map_sg(chan->device->dev, data->sg, in atmci_prepare_data_dma()
1190 data->sg_len, mmc_get_dma_dir(data)); in atmci_prepare_data_dma()
1192 dmaengine_slave_config(chan, &host->dma_conf); in atmci_prepare_data_dma()
1194 data->sg, sglen, slave_dirn, in atmci_prepare_data_dma()
1199 host->dma.data_desc = desc; in atmci_prepare_data_dma()
1200 desc->callback = atmci_dma_complete; in atmci_prepare_data_dma()
1201 desc->callback_param = host; in atmci_prepare_data_dma()
1205 dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, in atmci_prepare_data_dma()
1207 return -ENOMEM; in atmci_prepare_data_dma()
1222 if (data->flags & MMC_DATA_READ) in atmci_submit_data_pdc()
1231 struct dma_chan *chan = host->data_chan; in atmci_submit_data_dma()
1232 struct dma_async_tx_descriptor *desc = host->dma.data_desc; in atmci_submit_data_dma()
1242 dev_dbg(&host->pdev->dev, in atmci_stop_transfer()
1258 struct dma_chan *chan = host->data_chan; in atmci_stop_transfer_dma()
1265 dev_dbg(&host->pdev->dev, in atmci_stop_transfer_dma()
1285 mrq = slot->mrq; in atmci_start_request()
1286 host->cur_slot = slot; in atmci_start_request()
1287 host->mrq = mrq; in atmci_start_request()
1289 host->pending_events = 0; in atmci_start_request()
1290 host->completed_events = 0; in atmci_start_request()
1291 host->cmd_status = 0; in atmci_start_request()
1292 host->data_status = 0; in atmci_start_request()
1294 dev_dbg(&host->pdev->dev, "start request: cmd %u\n", mrq->cmd->opcode); in atmci_start_request()
1296 if (host->need_reset || host->caps.need_reset_after_xfer) { in atmci_start_request()
1301 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_start_request()
1302 if (host->caps.has_cfg_reg) in atmci_start_request()
1303 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_start_request()
1305 host->need_reset = false; in atmci_start_request()
1307 atmci_writel(host, ATMCI_SDCR, slot->sdc_reg); in atmci_start_request()
1311 dev_dbg(&slot->mmc->class_dev, "WARNING: IMR=0x%08x\n", in atmci_start_request()
1314 if (unlikely(test_and_clear_bit(ATMCI_CARD_NEED_INIT, &slot->flags))) { in atmci_start_request()
1321 data = mrq->data; in atmci_start_request()
1326 atmci_writel(host, ATMCI_BLKR, ATMCI_BCNT(data->blocks) in atmci_start_request()
1327 | ATMCI_BLKLEN(data->blksz)); in atmci_start_request()
1328 dev_vdbg(&slot->mmc->class_dev, "BLKR=0x%08x\n", in atmci_start_request()
1329 ATMCI_BCNT(data->blocks) | ATMCI_BLKLEN(data->blksz)); in atmci_start_request()
1331 iflags |= host->prepare_data(host, data); in atmci_start_request()
1335 cmd = mrq->cmd; in atmci_start_request()
1336 cmdflags = atmci_prepare_command(slot->mmc, cmd); in atmci_start_request()
1344 if (host->submit_data != &atmci_submit_data_dma) in atmci_start_request()
1348 host->submit_data(host, data); in atmci_start_request()
1350 if (host->submit_data == &atmci_submit_data_dma) in atmci_start_request()
1353 if (mrq->stop) { in atmci_start_request()
1354 host->stop_cmdr = atmci_prepare_command(slot->mmc, mrq->stop); in atmci_start_request()
1355 host->stop_cmdr |= ATMCI_CMDR_STOP_XFER; in atmci_start_request()
1356 if (!(data->flags & MMC_DATA_WRITE)) in atmci_start_request()
1357 host->stop_cmdr |= ATMCI_CMDR_TRDIR_READ; in atmci_start_request()
1358 host->stop_cmdr |= ATMCI_CMDR_MULTI_BLOCK; in atmci_start_request()
1373 dev_vdbg(&slot->mmc->class_dev, "queue request: state=%d\n", in atmci_queue_request()
1374 host->state); in atmci_queue_request()
1376 spin_lock_bh(&host->lock); in atmci_queue_request()
1377 slot->mrq = mrq; in atmci_queue_request()
1378 if (host->state == STATE_IDLE) { in atmci_queue_request()
1379 host->state = STATE_SENDING_CMD; in atmci_queue_request()
1382 dev_dbg(&host->pdev->dev, "queue request\n"); in atmci_queue_request()
1383 list_add_tail(&slot->queue_node, &host->queue); in atmci_queue_request()
1385 spin_unlock_bh(&host->lock); in atmci_queue_request()
1391 struct atmel_mci *host = slot->host; in atmci_request()
1394 WARN_ON(slot->mrq); in atmci_request()
1395 dev_dbg(&host->pdev->dev, "MRQ: cmd %u\n", mrq->cmd->opcode); in atmci_request()
1405 if (!test_bit(ATMCI_CARD_PRESENT, &slot->flags)) { in atmci_request()
1406 mrq->cmd->error = -ENOMEDIUM; in atmci_request()
1412 data = mrq->data; in atmci_request()
1413 if (data && data->blocks > 1 && data->blksz & 3) { in atmci_request()
1414 mrq->cmd->error = -EINVAL; in atmci_request()
1424 struct atmel_mci *host = slot->host; in atmci_set_ios()
1427 slot->sdc_reg &= ~ATMCI_SDCBUS_MASK; in atmci_set_ios()
1428 switch (ios->bus_width) { in atmci_set_ios()
1430 slot->sdc_reg |= ATMCI_SDCBUS_1BIT; in atmci_set_ios()
1433 slot->sdc_reg |= ATMCI_SDCBUS_4BIT; in atmci_set_ios()
1436 slot->sdc_reg |= ATMCI_SDCBUS_8BIT; in atmci_set_ios()
1440 if (ios->clock) { in atmci_set_ios()
1444 spin_lock_bh(&host->lock); in atmci_set_ios()
1445 if (!host->mode_reg) { in atmci_set_ios()
1448 if (host->caps.has_cfg_reg) in atmci_set_ios()
1449 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_set_ios()
1453 * Use mirror of ios->clock to prevent race with mmc in atmci_set_ios()
1456 slot->clock = ios->clock; in atmci_set_ios()
1458 if (host->slot[i] && host->slot[i]->clock in atmci_set_ios()
1459 && host->slot[i]->clock < clock_min) in atmci_set_ios()
1460 clock_min = host->slot[i]->clock; in atmci_set_ios()
1464 if (host->caps.has_odd_clk_div) { in atmci_set_ios()
1465 clkdiv = DIV_ROUND_UP(host->bus_hz, clock_min) - 2; in atmci_set_ios()
1467 dev_warn(&mmc->class_dev, in atmci_set_ios()
1469 clock_min, host->bus_hz / 2); in atmci_set_ios()
1472 dev_warn(&mmc->class_dev, in atmci_set_ios()
1474 clock_min, host->bus_hz / (511 + 2)); in atmci_set_ios()
1477 host->mode_reg = ATMCI_MR_CLKDIV(clkdiv >> 1) in atmci_set_ios()
1480 clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * clock_min) - 1; in atmci_set_ios()
1482 dev_warn(&mmc->class_dev, in atmci_set_ios()
1484 clock_min, host->bus_hz / (2 * 256)); in atmci_set_ios()
1487 host->mode_reg = ATMCI_MR_CLKDIV(clkdiv); in atmci_set_ios()
1495 if (host->caps.has_rwproof) in atmci_set_ios()
1496 host->mode_reg |= (ATMCI_MR_WRPROOF | ATMCI_MR_RDPROOF); in atmci_set_ios()
1498 if (host->caps.has_cfg_reg) { in atmci_set_ios()
1500 if (ios->timing == MMC_TIMING_SD_HS) in atmci_set_ios()
1501 host->cfg_reg |= ATMCI_CFG_HSMODE; in atmci_set_ios()
1503 host->cfg_reg &= ~ATMCI_CFG_HSMODE; in atmci_set_ios()
1506 if (list_empty(&host->queue)) { in atmci_set_ios()
1507 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_set_ios()
1508 if (host->caps.has_cfg_reg) in atmci_set_ios()
1509 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_set_ios()
1511 host->need_clock_update = true; in atmci_set_ios()
1514 spin_unlock_bh(&host->lock); in atmci_set_ios()
1518 spin_lock_bh(&host->lock); in atmci_set_ios()
1519 slot->clock = 0; in atmci_set_ios()
1521 if (host->slot[i] && host->slot[i]->clock) { in atmci_set_ios()
1528 if (host->mode_reg) { in atmci_set_ios()
1531 host->mode_reg = 0; in atmci_set_ios()
1533 spin_unlock_bh(&host->lock); in atmci_set_ios()
1536 switch (ios->power_mode) { in atmci_set_ios()
1538 if (!IS_ERR(mmc->supply.vmmc)) in atmci_set_ios()
1539 mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); in atmci_set_ios()
1542 set_bit(ATMCI_CARD_NEED_INIT, &slot->flags); in atmci_set_ios()
1543 if (!IS_ERR(mmc->supply.vmmc)) in atmci_set_ios()
1544 mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd); in atmci_set_ios()
1553 int read_only = -ENOSYS; in atmci_get_ro()
1556 if (slot->wp_pin) { in atmci_get_ro()
1557 read_only = gpiod_get_value(slot->wp_pin); in atmci_get_ro()
1558 dev_dbg(&mmc->class_dev, "card is %s\n", in atmci_get_ro()
1559 read_only ? "read-only" : "read-write"); in atmci_get_ro()
1567 int present = -ENOSYS; in atmci_get_cd()
1570 if (slot->detect_pin) { in atmci_get_cd()
1571 present = gpiod_get_value_cansleep(slot->detect_pin); in atmci_get_cd()
1572 dev_dbg(&mmc->class_dev, "card is %spresent\n", in atmci_get_cd()
1582 struct atmel_mci *host = slot->host; in atmci_enable_sdio_irq()
1585 atmci_writel(host, ATMCI_IER, slot->sdio_irq); in atmci_enable_sdio_irq()
1587 atmci_writel(host, ATMCI_IDR, slot->sdio_irq); in atmci_enable_sdio_irq()
1598 /* Called with host->lock held */
1600 __releases(&host->lock) in atmci_request_end()
1601 __acquires(&host->lock) in atmci_request_end()
1604 struct mmc_host *prev_mmc = host->cur_slot->mmc; in atmci_request_end()
1606 WARN_ON(host->cmd || host->data); in atmci_request_end()
1608 del_timer(&host->timer); in atmci_request_end()
1615 if (host->need_clock_update) { in atmci_request_end()
1616 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_request_end()
1617 if (host->caps.has_cfg_reg) in atmci_request_end()
1618 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_request_end()
1621 host->cur_slot->mrq = NULL; in atmci_request_end()
1622 host->mrq = NULL; in atmci_request_end()
1623 if (!list_empty(&host->queue)) { in atmci_request_end()
1624 slot = list_entry(host->queue.next, in atmci_request_end()
1626 list_del(&slot->queue_node); in atmci_request_end()
1627 dev_vdbg(&host->pdev->dev, "list not empty: %s is next\n", in atmci_request_end()
1628 mmc_hostname(slot->mmc)); in atmci_request_end()
1629 host->state = STATE_SENDING_CMD; in atmci_request_end()
1632 dev_vdbg(&host->pdev->dev, "list empty\n"); in atmci_request_end()
1633 host->state = STATE_IDLE; in atmci_request_end()
1636 spin_unlock(&host->lock); in atmci_request_end()
1638 spin_lock(&host->lock); in atmci_request_end()
1644 u32 status = host->cmd_status; in atmci_command_complete()
1647 cmd->resp[0] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1648 cmd->resp[1] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1649 cmd->resp[2] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1650 cmd->resp[3] = atmci_readl(host, ATMCI_RSPR); in atmci_command_complete()
1653 cmd->error = -ETIMEDOUT; in atmci_command_complete()
1654 else if ((cmd->flags & MMC_RSP_CRC) && (status & ATMCI_RCRCE)) in atmci_command_complete()
1655 cmd->error = -EILSEQ; in atmci_command_complete()
1657 cmd->error = -EIO; in atmci_command_complete()
1658 else if (host->mrq->data && (host->mrq->data->blksz & 3)) { in atmci_command_complete()
1659 if (host->caps.need_blksz_mul_4) { in atmci_command_complete()
1660 cmd->error = -EINVAL; in atmci_command_complete()
1661 host->need_reset = 1; in atmci_command_complete()
1664 cmd->error = 0; in atmci_command_complete()
1675 * freeing the interrupt. We must not re-enable the interrupt in atmci_detect_change()
1680 if (test_bit(ATMCI_SHUTDOWN, &slot->flags)) in atmci_detect_change()
1683 enable_irq(gpiod_to_irq(slot->detect_pin)); in atmci_detect_change()
1684 present = gpiod_get_value_cansleep(slot->detect_pin); in atmci_detect_change()
1685 present_old = test_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_detect_change()
1687 dev_vdbg(&slot->mmc->class_dev, "detect change: %d (was %d)\n", in atmci_detect_change()
1691 struct atmel_mci *host = slot->host; in atmci_detect_change()
1694 dev_dbg(&slot->mmc->class_dev, "card %s\n", in atmci_detect_change()
1697 spin_lock(&host->lock); in atmci_detect_change()
1700 clear_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_detect_change()
1702 set_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_detect_change()
1705 mrq = slot->mrq; in atmci_detect_change()
1707 if (mrq == host->mrq) { in atmci_detect_change()
1714 atmci_writel(host, ATMCI_MR, host->mode_reg); in atmci_detect_change()
1715 if (host->caps.has_cfg_reg) in atmci_detect_change()
1716 atmci_writel(host, ATMCI_CFG, host->cfg_reg); in atmci_detect_change()
1718 host->data = NULL; in atmci_detect_change()
1719 host->cmd = NULL; in atmci_detect_change()
1721 switch (host->state) { in atmci_detect_change()
1725 mrq->cmd->error = -ENOMEDIUM; in atmci_detect_change()
1726 if (mrq->data) in atmci_detect_change()
1727 host->stop_transfer(host); in atmci_detect_change()
1730 mrq->data->error = -ENOMEDIUM; in atmci_detect_change()
1731 host->stop_transfer(host); in atmci_detect_change()
1734 mrq->data->error = -ENOMEDIUM; in atmci_detect_change()
1737 mrq->stop->error = -ENOMEDIUM; in atmci_detect_change()
1745 list_del(&slot->queue_node); in atmci_detect_change()
1746 mrq->cmd->error = -ENOMEDIUM; in atmci_detect_change()
1747 if (mrq->data) in atmci_detect_change()
1748 mrq->data->error = -ENOMEDIUM; in atmci_detect_change()
1749 if (mrq->stop) in atmci_detect_change()
1750 mrq->stop->error = -ENOMEDIUM; in atmci_detect_change()
1752 spin_unlock(&host->lock); in atmci_detect_change()
1753 mmc_request_done(slot->mmc, mrq); in atmci_detect_change()
1754 spin_lock(&host->lock); in atmci_detect_change()
1757 spin_unlock(&host->lock); in atmci_detect_change()
1759 mmc_detect_change(slot->mmc, 0); in atmci_detect_change()
1766 struct mmc_request *mrq = host->mrq; in atmci_tasklet_func()
1767 struct mmc_data *data = host->data; in atmci_tasklet_func()
1768 enum atmel_mci_state state = host->state; in atmci_tasklet_func()
1772 spin_lock(&host->lock); in atmci_tasklet_func()
1774 state = host->state; in atmci_tasklet_func()
1776 dev_vdbg(&host->pdev->dev, in atmci_tasklet_func()
1778 state, host->pending_events, host->completed_events, in atmci_tasklet_func()
1783 dev_dbg(&host->pdev->dev, "FSM: state=%d\n", state); in atmci_tasklet_func()
1796 dev_dbg(&host->pdev->dev, "FSM: cmd ready?\n"); in atmci_tasklet_func()
1801 dev_dbg(&host->pdev->dev, "set completed cmd ready\n"); in atmci_tasklet_func()
1802 host->cmd = NULL; in atmci_tasklet_func()
1804 atmci_command_complete(host, mrq->cmd); in atmci_tasklet_func()
1805 if (mrq->data) { in atmci_tasklet_func()
1806 dev_dbg(&host->pdev->dev, in atmci_tasklet_func()
1812 if (mrq->cmd->error) { in atmci_tasklet_func()
1813 host->stop_transfer(host); in atmci_tasklet_func()
1814 host->data = NULL; in atmci_tasklet_func()
1821 } else if ((!mrq->data) && (mrq->cmd->flags & MMC_RSP_BUSY)) { in atmci_tasklet_func()
1822 dev_dbg(&host->pdev->dev, in atmci_tasklet_func()
1834 dev_dbg(&host->pdev->dev, "set completed data error\n"); in atmci_tasklet_func()
1847 dev_dbg(&host->pdev->dev, "FSM: xfer complete?\n"); in atmci_tasklet_func()
1852 dev_dbg(&host->pdev->dev, in atmci_tasklet_func()
1857 if (host->caps.need_notbusy_for_read_ops || in atmci_tasklet_func()
1858 (host->data->flags & MMC_DATA_WRITE)) { in atmci_tasklet_func()
1861 } else if (host->mrq->stop) { in atmci_tasklet_func()
1865 host->data = NULL; in atmci_tasklet_func()
1866 data->bytes_xfered = data->blocks * data->blksz; in atmci_tasklet_func()
1867 data->error = 0; in atmci_tasklet_func()
1879 dev_dbg(&host->pdev->dev, "FSM: not busy?\n"); in atmci_tasklet_func()
1884 dev_dbg(&host->pdev->dev, "set completed not busy\n"); in atmci_tasklet_func()
1887 if (host->data) { in atmci_tasklet_func()
1893 if (host->mrq->stop) { in atmci_tasklet_func()
1897 host->data = NULL; in atmci_tasklet_func()
1898 data->bytes_xfered = data->blocks in atmci_tasklet_func()
1899 * data->blksz; in atmci_tasklet_func()
1900 data->error = 0; in atmci_tasklet_func()
1909 * In this state, it is important to set host->data to in atmci_tasklet_func()
1914 dev_dbg(&host->pdev->dev, "FSM: cmd ready?\n"); in atmci_tasklet_func()
1919 dev_dbg(&host->pdev->dev, "FSM: cmd ready\n"); in atmci_tasklet_func()
1920 host->cmd = NULL; in atmci_tasklet_func()
1921 data->bytes_xfered = data->blocks * data->blksz; in atmci_tasklet_func()
1922 data->error = 0; in atmci_tasklet_func()
1923 atmci_command_complete(host, mrq->stop); in atmci_tasklet_func()
1924 if (mrq->stop->error) { in atmci_tasklet_func()
1925 host->stop_transfer(host); in atmci_tasklet_func()
1934 host->data = NULL; in atmci_tasklet_func()
1940 status = host->data_status; in atmci_tasklet_func()
1942 host->stop_transfer(host); in atmci_tasklet_func()
1943 host->data = NULL; in atmci_tasklet_func()
1946 data->error = -ETIMEDOUT; in atmci_tasklet_func()
1948 data->error = -EILSEQ; in atmci_tasklet_func()
1950 data->error = -EIO; in atmci_tasklet_func()
1955 atmci_request_end(host, host->mrq); in atmci_tasklet_func()
1956 goto unlock; /* atmci_request_end() sets host->state */ in atmci_tasklet_func()
1961 host->state = state; in atmci_tasklet_func()
1964 spin_unlock(&host->lock); in atmci_tasklet_func()
1969 struct scatterlist *sg = host->sg; in atmci_read_data_pio()
1970 unsigned int offset = host->pio_offset; in atmci_read_data_pio()
1971 struct mmc_data *data = host->data; in atmci_read_data_pio()
1978 if (likely(offset + 4 <= sg->length)) { in atmci_read_data_pio()
1984 if (offset == sg->length) { in atmci_read_data_pio()
1986 host->sg = sg = sg_next(sg); in atmci_read_data_pio()
1987 host->sg_len--; in atmci_read_data_pio()
1988 if (!sg || !host->sg_len) in atmci_read_data_pio()
1994 unsigned int remaining = sg->length - offset; in atmci_read_data_pio()
2000 host->sg = sg = sg_next(sg); in atmci_read_data_pio()
2001 host->sg_len--; in atmci_read_data_pio()
2002 if (!sg || !host->sg_len) in atmci_read_data_pio()
2005 offset = 4 - remaining; in atmci_read_data_pio()
2015 host->data_status = status; in atmci_read_data_pio()
2016 data->bytes_xfered += nbytes; in atmci_read_data_pio()
2021 host->pio_offset = offset; in atmci_read_data_pio()
2022 data->bytes_xfered += nbytes; in atmci_read_data_pio()
2029 data->bytes_xfered += nbytes; in atmci_read_data_pio()
2036 struct scatterlist *sg = host->sg; in atmci_write_data_pio()
2037 unsigned int offset = host->pio_offset; in atmci_write_data_pio()
2038 struct mmc_data *data = host->data; in atmci_write_data_pio()
2044 if (likely(offset + 4 <= sg->length)) { in atmci_write_data_pio()
2050 if (offset == sg->length) { in atmci_write_data_pio()
2051 host->sg = sg = sg_next(sg); in atmci_write_data_pio()
2052 host->sg_len--; in atmci_write_data_pio()
2053 if (!sg || !host->sg_len) in atmci_write_data_pio()
2059 unsigned int remaining = sg->length - offset; in atmci_write_data_pio()
2065 host->sg = sg = sg_next(sg); in atmci_write_data_pio()
2066 host->sg_len--; in atmci_write_data_pio()
2067 if (!sg || !host->sg_len) { in atmci_write_data_pio()
2072 offset = 4 - remaining; in atmci_write_data_pio()
2083 host->data_status = status; in atmci_write_data_pio()
2084 data->bytes_xfered += nbytes; in atmci_write_data_pio()
2089 host->pio_offset = offset; in atmci_write_data_pio()
2090 data->bytes_xfered += nbytes; in atmci_write_data_pio()
2097 data->bytes_xfered += nbytes; in atmci_write_data_pio()
2107 struct atmel_mci_slot *slot = host->slot[i]; in atmci_sdio_interrupt()
2108 if (slot && (status & slot->sdio_irq)) { in atmci_sdio_interrupt()
2109 mmc_signal_sdio_irq(slot->mmc); in atmci_sdio_interrupt()
2129 dev_dbg(&host->pdev->dev, "IRQ: data error\n"); in atmci_interrupt()
2135 host->data_status = status; in atmci_interrupt()
2136 dev_dbg(&host->pdev->dev, "set pending data error\n"); in atmci_interrupt()
2139 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2143 dev_dbg(&host->pdev->dev, "IRQ: tx buffer empty\n"); in atmci_interrupt()
2151 if (host->data_size) { in atmci_interrupt()
2159 dev_dbg(&host->pdev->dev, "IRQ: end of tx buffer\n"); in atmci_interrupt()
2162 if (host->data_size) { in atmci_interrupt()
2170 dev_dbg(&host->pdev->dev, "IRQ: rx buffer full\n"); in atmci_interrupt()
2178 if (host->data_size) { in atmci_interrupt()
2186 dev_dbg(&host->pdev->dev, "IRQ: end of rx buffer\n"); in atmci_interrupt()
2189 if (host->data_size) { in atmci_interrupt()
2203 dev_dbg(&host->pdev->dev, "IRQ: blke\n"); in atmci_interrupt()
2206 dev_dbg(&host->pdev->dev, "set pending notbusy\n"); in atmci_interrupt()
2208 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2212 dev_dbg(&host->pdev->dev, "IRQ: not_busy\n"); in atmci_interrupt()
2215 dev_dbg(&host->pdev->dev, "set pending notbusy\n"); in atmci_interrupt()
2217 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2226 dev_dbg(&host->pdev->dev, "IRQ: cmd ready\n"); in atmci_interrupt()
2228 host->cmd_status = status; in atmci_interrupt()
2230 dev_dbg(&host->pdev->dev, "set pending cmd rdy\n"); in atmci_interrupt()
2232 tasklet_schedule(&host->tasklet); in atmci_interrupt()
2253 mod_timer(&slot->detect_timer, jiffies + msecs_to_jiffies(20)); in atmci_detect_interrupt()
2266 mmc = mmc_alloc_host(sizeof(struct atmel_mci_slot), &host->pdev->dev); in atmci_init_slot()
2268 return -ENOMEM; in atmci_init_slot()
2271 slot->mmc = mmc; in atmci_init_slot()
2272 slot->host = host; in atmci_init_slot()
2273 slot->detect_pin = slot_data->detect_pin; in atmci_init_slot()
2274 slot->wp_pin = slot_data->wp_pin; in atmci_init_slot()
2275 slot->sdc_reg = sdc_reg; in atmci_init_slot()
2276 slot->sdio_irq = sdio_irq; in atmci_init_slot()
2278 dev_dbg(&mmc->class_dev, in atmci_init_slot()
2281 id, slot_data->bus_width, desc_to_gpio(slot_data->detect_pin), in atmci_init_slot()
2282 !gpiod_is_active_low(slot_data->detect_pin) ? "true" : "false", in atmci_init_slot()
2283 desc_to_gpio(slot_data->wp_pin)); in atmci_init_slot()
2285 mmc->ops = &atmci_ops; in atmci_init_slot()
2286 mmc->f_min = DIV_ROUND_UP(host->bus_hz, 512); in atmci_init_slot()
2287 mmc->f_max = host->bus_hz / 2; in atmci_init_slot()
2288 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; in atmci_init_slot()
2290 mmc->caps |= MMC_CAP_SDIO_IRQ; in atmci_init_slot()
2291 if (host->caps.has_highspeed) in atmci_init_slot()
2292 mmc->caps |= MMC_CAP_SD_HIGHSPEED; in atmci_init_slot()
2298 if ((slot_data->bus_width >= 4) && host->caps.has_rwproof) { in atmci_init_slot()
2299 mmc->caps |= MMC_CAP_4_BIT_DATA; in atmci_init_slot()
2300 if (slot_data->bus_width >= 8) in atmci_init_slot()
2301 mmc->caps |= MMC_CAP_8_BIT_DATA; in atmci_init_slot()
2305 mmc->max_segs = 256; in atmci_init_slot()
2306 mmc->max_blk_size = 4095; in atmci_init_slot()
2307 mmc->max_blk_count = 256; in atmci_init_slot()
2308 mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; in atmci_init_slot()
2309 mmc->max_seg_size = mmc->max_blk_size * mmc->max_segs; in atmci_init_slot()
2311 mmc->max_segs = 64; in atmci_init_slot()
2312 mmc->max_req_size = 32768 * 512; in atmci_init_slot()
2313 mmc->max_blk_size = 32768; in atmci_init_slot()
2314 mmc->max_blk_count = 512; in atmci_init_slot()
2318 set_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_init_slot()
2319 if (slot->detect_pin) { in atmci_init_slot()
2320 if (!gpiod_get_value_cansleep(slot->detect_pin)) in atmci_init_slot()
2321 clear_bit(ATMCI_CARD_PRESENT, &slot->flags); in atmci_init_slot()
2323 dev_dbg(&mmc->class_dev, "no detect pin available\n"); in atmci_init_slot()
2326 if (!slot->detect_pin) { in atmci_init_slot()
2327 if (slot_data->non_removable) in atmci_init_slot()
2328 mmc->caps |= MMC_CAP_NONREMOVABLE; in atmci_init_slot()
2330 mmc->caps |= MMC_CAP_NEEDS_POLL; in atmci_init_slot()
2333 if (!slot->wp_pin) in atmci_init_slot()
2334 dev_dbg(&mmc->class_dev, "no WP pin available\n"); in atmci_init_slot()
2336 host->slot[id] = slot; in atmci_init_slot()
2344 if (slot->detect_pin) { in atmci_init_slot()
2345 timer_setup(&slot->detect_timer, atmci_detect_change, 0); in atmci_init_slot()
2347 ret = request_irq(gpiod_to_irq(slot->detect_pin), in atmci_init_slot()
2350 "mmc-detect", slot); in atmci_init_slot()
2352 dev_dbg(&mmc->class_dev, in atmci_init_slot()
2354 gpiod_to_irq(slot->detect_pin)); in atmci_init_slot()
2355 slot->detect_pin = NULL; in atmci_init_slot()
2369 set_bit(ATMCI_SHUTDOWN, &slot->flags); in atmci_cleanup_slot()
2372 mmc_remove_host(slot->mmc); in atmci_cleanup_slot()
2374 if (slot->detect_pin) { in atmci_cleanup_slot()
2375 free_irq(gpiod_to_irq(slot->detect_pin), slot); in atmci_cleanup_slot()
2376 del_timer_sync(&slot->detect_timer); in atmci_cleanup_slot()
2379 slot->host->slot[id] = NULL; in atmci_cleanup_slot()
2380 mmc_free_host(slot->mmc); in atmci_cleanup_slot()
2385 host->dma.chan = dma_request_chan(&host->pdev->dev, "rxtx"); in atmci_configure_dma()
2387 if (PTR_ERR(host->dma.chan) == -ENODEV) { in atmci_configure_dma()
2388 struct mci_platform_data *pdata = host->pdev->dev.platform_data; in atmci_configure_dma()
2391 if (!pdata || !pdata->dma_filter) in atmci_configure_dma()
2392 return -ENODEV; in atmci_configure_dma()
2397 host->dma.chan = dma_request_channel(mask, pdata->dma_filter, in atmci_configure_dma()
2398 pdata->dma_slave); in atmci_configure_dma()
2399 if (!host->dma.chan) in atmci_configure_dma()
2400 host->dma.chan = ERR_PTR(-ENODEV); in atmci_configure_dma()
2403 if (IS_ERR(host->dma.chan)) in atmci_configure_dma()
2404 return PTR_ERR(host->dma.chan); in atmci_configure_dma()
2406 dev_info(&host->pdev->dev, "using %s for DMA transfers\n", in atmci_configure_dma()
2407 dma_chan_name(host->dma.chan)); in atmci_configure_dma()
2409 host->dma_conf.src_addr = host->mapbase + ATMCI_RDR; in atmci_configure_dma()
2410 host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; in atmci_configure_dma()
2411 host->dma_conf.src_maxburst = 1; in atmci_configure_dma()
2412 host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR; in atmci_configure_dma()
2413 host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; in atmci_configure_dma()
2414 host->dma_conf.dst_maxburst = 1; in atmci_configure_dma()
2415 host->dma_conf.device_fc = false; in atmci_configure_dma()
2430 dev_info(&host->pdev->dev, in atmci_get_cap()
2433 host->caps.has_dma_conf_reg = false; in atmci_get_cap()
2434 host->caps.has_pdc = true; in atmci_get_cap()
2435 host->caps.has_cfg_reg = false; in atmci_get_cap()
2436 host->caps.has_cstor_reg = false; in atmci_get_cap()
2437 host->caps.has_highspeed = false; in atmci_get_cap()
2438 host->caps.has_rwproof = false; in atmci_get_cap()
2439 host->caps.has_odd_clk_div = false; in atmci_get_cap()
2440 host->caps.has_bad_data_ordering = true; in atmci_get_cap()
2441 host->caps.need_reset_after_xfer = true; in atmci_get_cap()
2442 host->caps.need_blksz_mul_4 = true; in atmci_get_cap()
2443 host->caps.need_notbusy_for_read_ops = false; in atmci_get_cap()
2449 host->caps.has_odd_clk_div = true; in atmci_get_cap()
2453 host->caps.has_dma_conf_reg = true; in atmci_get_cap()
2454 host->caps.has_pdc = false; in atmci_get_cap()
2455 host->caps.has_cfg_reg = true; in atmci_get_cap()
2456 host->caps.has_cstor_reg = true; in atmci_get_cap()
2457 host->caps.has_highspeed = true; in atmci_get_cap()
2460 host->caps.has_rwproof = true; in atmci_get_cap()
2461 host->caps.need_blksz_mul_4 = false; in atmci_get_cap()
2462 host->caps.need_notbusy_for_read_ops = true; in atmci_get_cap()
2465 host->caps.has_bad_data_ordering = false; in atmci_get_cap()
2466 host->caps.need_reset_after_xfer = false; in atmci_get_cap()
2471 host->caps.has_pdc = false; in atmci_get_cap()
2472 dev_warn(&host->pdev->dev, in atmci_get_cap()
2489 return -ENXIO; in atmci_probe()
2490 pdata = pdev->dev.platform_data; in atmci_probe()
2494 dev_err(&pdev->dev, "platform data not available\n"); in atmci_probe()
2503 host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); in atmci_probe()
2505 return -ENOMEM; in atmci_probe()
2507 host->pdev = pdev; in atmci_probe()
2508 spin_lock_init(&host->lock); in atmci_probe()
2509 INIT_LIST_HEAD(&host->queue); in atmci_probe()
2511 host->mck = devm_clk_get(&pdev->dev, "mci_clk"); in atmci_probe()
2512 if (IS_ERR(host->mck)) in atmci_probe()
2513 return PTR_ERR(host->mck); in atmci_probe()
2515 host->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); in atmci_probe()
2516 if (!host->regs) in atmci_probe()
2517 return -ENOMEM; in atmci_probe()
2519 ret = clk_prepare_enable(host->mck); in atmci_probe()
2524 host->bus_hz = clk_get_rate(host->mck); in atmci_probe()
2526 host->mapbase = regs->start; in atmci_probe()
2528 tasklet_setup(&host->tasklet, atmci_tasklet_func); in atmci_probe()
2530 ret = request_irq(irq, atmci_interrupt, 0, dev_name(&pdev->dev), host); in atmci_probe()
2532 clk_disable_unprepare(host->mck); in atmci_probe()
2539 if (ret == -EPROBE_DEFER) { in atmci_probe()
2540 clk_disable_unprepare(host->mck); in atmci_probe()
2544 host->prepare_data = &atmci_prepare_data_dma; in atmci_probe()
2545 host->submit_data = &atmci_submit_data_dma; in atmci_probe()
2546 host->stop_transfer = &atmci_stop_transfer_dma; in atmci_probe()
2547 } else if (host->caps.has_pdc) { in atmci_probe()
2548 dev_info(&pdev->dev, "using PDC\n"); in atmci_probe()
2549 host->prepare_data = &atmci_prepare_data_pdc; in atmci_probe()
2550 host->submit_data = &atmci_submit_data_pdc; in atmci_probe()
2551 host->stop_transfer = &atmci_stop_transfer_pdc; in atmci_probe()
2553 dev_info(&pdev->dev, "using PIO\n"); in atmci_probe()
2554 host->prepare_data = &atmci_prepare_data; in atmci_probe()
2555 host->submit_data = &atmci_submit_data; in atmci_probe()
2556 host->stop_transfer = &atmci_stop_transfer; in atmci_probe()
2561 timer_setup(&host->timer, atmci_timeout_timer, 0); in atmci_probe()
2563 pm_runtime_get_noresume(&pdev->dev); in atmci_probe()
2564 pm_runtime_set_active(&pdev->dev); in atmci_probe()
2565 pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_DELAY); in atmci_probe()
2566 pm_runtime_use_autosuspend(&pdev->dev); in atmci_probe()
2567 pm_runtime_enable(&pdev->dev); in atmci_probe()
2571 ret = -ENODEV; in atmci_probe()
2572 if (pdata->slot[0].bus_width) { in atmci_probe()
2573 ret = atmci_init_slot(host, &pdata->slot[0], in atmci_probe()
2577 host->buf_size = host->slot[0]->mmc->max_req_size; in atmci_probe()
2580 if (pdata->slot[1].bus_width) { in atmci_probe()
2581 ret = atmci_init_slot(host, &pdata->slot[1], in atmci_probe()
2585 if (host->slot[1]->mmc->max_req_size > host->buf_size) in atmci_probe()
2586 host->buf_size = in atmci_probe()
2587 host->slot[1]->mmc->max_req_size; in atmci_probe()
2592 dev_err(&pdev->dev, "init failed: no slot defined\n"); in atmci_probe()
2596 if (!host->caps.has_rwproof) { in atmci_probe()
2597 host->buffer = dma_alloc_coherent(&pdev->dev, host->buf_size, in atmci_probe()
2598 &host->buf_phys_addr, in atmci_probe()
2600 if (!host->buffer) { in atmci_probe()
2601 ret = -ENOMEM; in atmci_probe()
2602 dev_err(&pdev->dev, "buffer allocation failed\n"); in atmci_probe()
2607 dev_info(&pdev->dev, in atmci_probe()
2609 host->mapbase, irq, nr_slots); in atmci_probe()
2611 pm_runtime_mark_last_busy(&host->pdev->dev); in atmci_probe()
2612 pm_runtime_put_autosuspend(&pdev->dev); in atmci_probe()
2618 if (host->slot[i]) in atmci_probe()
2619 atmci_cleanup_slot(host->slot[i], i); in atmci_probe()
2622 clk_disable_unprepare(host->mck); in atmci_probe()
2624 pm_runtime_disable(&pdev->dev); in atmci_probe()
2625 pm_runtime_put_noidle(&pdev->dev); in atmci_probe()
2627 del_timer_sync(&host->timer); in atmci_probe()
2628 if (!IS_ERR(host->dma.chan)) in atmci_probe()
2629 dma_release_channel(host->dma.chan); in atmci_probe()
2640 pm_runtime_get_sync(&pdev->dev); in atmci_remove()
2642 if (host->buffer) in atmci_remove()
2643 dma_free_coherent(&pdev->dev, host->buf_size, in atmci_remove()
2644 host->buffer, host->buf_phys_addr); in atmci_remove()
2647 if (host->slot[i]) in atmci_remove()
2648 atmci_cleanup_slot(host->slot[i], i); in atmci_remove()
2655 del_timer_sync(&host->timer); in atmci_remove()
2656 if (!IS_ERR(host->dma.chan)) in atmci_remove()
2657 dma_release_channel(host->dma.chan); in atmci_remove()
2661 clk_disable_unprepare(host->mck); in atmci_remove()
2663 pm_runtime_disable(&pdev->dev); in atmci_remove()
2664 pm_runtime_put_noidle(&pdev->dev); in atmci_remove()
2672 clk_disable_unprepare(host->mck); in atmci_runtime_suspend()
2685 return clk_prepare_enable(host->mck); in atmci_runtime_resume()