Lines Matching +full:no +full:- +full:mmc
2 * linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
4 * Copyright (C) 2004-2006 maintech GmbH, Thomas Kleffel <tk@maintech.de>
7 * Copyright (C) 2008 Simtec Electronics <ben-linux@fluff.org>
16 #include <linux/dma-mapping.h>
18 #include <linux/mmc/host.h>
30 #include <linux/mmc/slot-gpio.h>
32 #include <plat/gpio-cfg.h>
34 #include <mach/gpio-samsung.h>
36 #include <linux/platform_data/mmc-s3cmci.h>
40 #define DRIVER_NAME "s3c-mci"
142 dev_err(&host->pdev->dev, args); \
144 dev_info(&host->pdev->dev, args); \
146 dev_dbg(&host->pdev->dev, args); \
150 static void s3cmci_send_request(struct mmc_host *mmc);
160 con = readl(host->base + S3C2410_SDICON); in dbg_dumpregs()
161 pre = readl(host->base + S3C2410_SDIPRE); in dbg_dumpregs()
162 cmdarg = readl(host->base + S3C2410_SDICMDARG); in dbg_dumpregs()
163 cmdcon = readl(host->base + S3C2410_SDICMDCON); in dbg_dumpregs()
164 cmdsta = readl(host->base + S3C2410_SDICMDSTAT); in dbg_dumpregs()
165 r0 = readl(host->base + S3C2410_SDIRSP0); in dbg_dumpregs()
166 r1 = readl(host->base + S3C2410_SDIRSP1); in dbg_dumpregs()
167 r2 = readl(host->base + S3C2410_SDIRSP2); in dbg_dumpregs()
168 r3 = readl(host->base + S3C2410_SDIRSP3); in dbg_dumpregs()
169 timer = readl(host->base + S3C2410_SDITIMER); in dbg_dumpregs()
170 bsize = readl(host->base + S3C2410_SDIBSIZE); in dbg_dumpregs()
171 datcon = readl(host->base + S3C2410_SDIDCON); in dbg_dumpregs()
172 datcnt = readl(host->base + S3C2410_SDIDCNT); in dbg_dumpregs()
173 datsta = readl(host->base + S3C2410_SDIDSTA); in dbg_dumpregs()
174 fsta = readl(host->base + S3C2410_SDIFSTA); in dbg_dumpregs()
175 imask = readl(host->base + host->sdiimsk); in dbg_dumpregs()
195 snprintf(host->dbgmsg_cmd, 300, in prepare_dbgmsg()
197 host->ccnt, (stop ? " (STOP)" : ""), in prepare_dbgmsg()
198 cmd->opcode, cmd->arg, cmd->flags, cmd->retries); in prepare_dbgmsg()
200 if (cmd->data) { in prepare_dbgmsg()
201 snprintf(host->dbgmsg_dat, 300, in prepare_dbgmsg()
203 host->dcnt, cmd->data->blksz, in prepare_dbgmsg()
204 cmd->data->blocks, in prepare_dbgmsg()
205 cmd->data->blocks * cmd->data->blksz); in prepare_dbgmsg()
207 host->dbgmsg_dat[0] = '\0'; in prepare_dbgmsg()
219 if (cmd->error == 0) { in dbg_dumpcmd()
221 host->dbgmsg_cmd, cmd->resp[0]); in dbg_dumpcmd()
224 cmd->error, host->dbgmsg_cmd, host->status); in dbg_dumpcmd()
227 if (!cmd->data) in dbg_dumpcmd()
230 if (cmd->data->error == 0) { in dbg_dumpcmd()
231 dbg(host, dbglvl, "DAT[OK] %s\n", host->dbgmsg_dat); in dbg_dumpcmd()
234 cmd->data->error, host->dbgmsg_dat, in dbg_dumpcmd()
235 readl(host->base + S3C2410_SDIDCNT)); in dbg_dumpcmd()
250 * s3cmci_host_usedma - return whether the host is using dma or pio
270 newmask = readl(host->base + host->sdiimsk); in enable_imask()
273 writel(newmask, host->base + host->sdiimsk); in enable_imask()
282 newmask = readl(host->base + host->sdiimsk); in disable_imask()
285 writel(newmask, host->base + host->sdiimsk); in disable_imask()
292 u32 mask = readl(host->base + host->sdiimsk); in clear_imask()
296 writel(mask, host->base + host->sdiimsk); in clear_imask()
300 * s3cmci_check_sdio_irq - test whether the SDIO IRQ is being signalled
304 * controller has failed to re-detect a card interrupt. Read GPE8 and
313 if (host->sdio_irqen) { in s3cmci_check_sdio_irq()
316 mmc_signal_sdio_irq(host->mmc); in s3cmci_check_sdio_irq()
326 if (host->pio_active == XFER_NONE) in get_data_buffer()
327 return -EINVAL; in get_data_buffer()
329 if ((!host->mrq) || (!host->mrq->data)) in get_data_buffer()
330 return -EINVAL; in get_data_buffer()
332 if (host->pio_sgptr >= host->mrq->data->sg_len) { in get_data_buffer()
333 dbg(host, dbg_debug, "no more buffers (%i/%i)\n", in get_data_buffer()
334 host->pio_sgptr, host->mrq->data->sg_len); in get_data_buffer()
335 return -EBUSY; in get_data_buffer()
337 sg = &host->mrq->data->sg[host->pio_sgptr]; in get_data_buffer()
339 *bytes = sg->length; in get_data_buffer()
342 host->pio_sgptr++; in get_data_buffer()
345 host->pio_sgptr, host->mrq->data->sg_len); in get_data_buffer()
352 u32 fifostat = readl(host->base + S3C2410_SDIFSTA); in fifo_count()
360 u32 fifostat = readl(host->base + S3C2410_SDIFSTA); in fifo_free()
363 return 63 - fifostat; in fifo_free()
367 * s3cmci_enable_irq - enable IRQ, after having disabled it.
374 * - disabled during IDLE
375 * - disabled whilst processing data
376 * - enabled during transfer
377 * - enabled whilst awaiting SDIO interrupt detection
386 host->irq_enabled = more; in s3cmci_enable_irq()
387 host->irq_disabled = false; in s3cmci_enable_irq()
389 enable = more | host->sdio_irqen; in s3cmci_enable_irq()
391 if (host->irq_state != enable) { in s3cmci_enable_irq()
392 host->irq_state = enable; in s3cmci_enable_irq()
395 enable_irq(host->irq); in s3cmci_enable_irq()
397 disable_irq(host->irq); in s3cmci_enable_irq()
414 host->irq_disabled = transfer; in s3cmci_disable_irq()
416 if (transfer && host->irq_state) { in s3cmci_disable_irq()
417 host->irq_state = false; in s3cmci_disable_irq()
418 disable_irq(host->irq); in s3cmci_disable_irq()
433 writel(host->prescaler, host->base + S3C2410_SDIPRE); in do_pio_read()
435 from_ptr = host->base + host->sdidata; in do_pio_read()
438 if (!host->pio_bytes) { in do_pio_read()
439 res = get_data_buffer(host, &host->pio_bytes, in do_pio_read()
440 &host->pio_ptr); in do_pio_read()
442 host->pio_active = XFER_NONE; in do_pio_read()
443 host->complete_what = COMPLETION_FINALIZE; in do_pio_read()
446 "complete (no more data).\n"); in do_pio_read()
452 host->pio_bytes, host->pio_ptr); in do_pio_read()
457 fifo, host->pio_bytes, in do_pio_read()
458 readl(host->base + S3C2410_SDIDCNT)); in do_pio_read()
465 if (fifo >= host->pio_bytes) in do_pio_read()
466 fifo = host->pio_bytes; in do_pio_read()
468 fifo -= fifo & 3; in do_pio_read()
470 host->pio_bytes -= fifo; in do_pio_read()
471 host->pio_count += fifo; in do_pio_read()
474 ptr = host->pio_ptr; in do_pio_read()
475 while (fifo_words--) in do_pio_read()
477 host->pio_ptr = ptr; in do_pio_read()
482 u8 *p = (u8 *)host->pio_ptr; in do_pio_read()
484 while (n--) { in do_pio_read()
491 if (!host->pio_bytes) { in do_pio_read()
492 res = get_data_buffer(host, &host->pio_bytes, &host->pio_ptr); in do_pio_read()
495 "pio_read(): complete (no more buffers).\n"); in do_pio_read()
496 host->pio_active = XFER_NONE; in do_pio_read()
497 host->complete_what = COMPLETION_FINALIZE; in do_pio_read()
514 to_ptr = host->base + host->sdidata; in do_pio_write()
517 if (!host->pio_bytes) { in do_pio_write()
518 res = get_data_buffer(host, &host->pio_bytes, in do_pio_write()
519 &host->pio_ptr); in do_pio_write()
522 "pio_write(): complete (no more data).\n"); in do_pio_write()
523 host->pio_active = XFER_NONE; in do_pio_write()
530 host->pio_bytes, host->pio_ptr); in do_pio_write()
538 if (fifo >= host->pio_bytes) in do_pio_write()
539 fifo = host->pio_bytes; in do_pio_write()
541 fifo -= fifo & 3; in do_pio_write()
543 host->pio_bytes -= fifo; in do_pio_write()
544 host->pio_count += fifo; in do_pio_write()
547 ptr = host->pio_ptr; in do_pio_write()
548 while (fifo--) in do_pio_write()
550 host->pio_ptr = ptr; in do_pio_write()
562 if (host->pio_active == XFER_WRITE) in pio_tasklet()
565 if (host->pio_active == XFER_READ) in pio_tasklet()
568 if (host->complete_what == COMPLETION_FINALIZE) { in pio_tasklet()
570 if (host->pio_active != XFER_NONE) { in pio_tasklet()
572 "- pio_count:[%u] pio_bytes:[%u]\n", in pio_tasklet()
573 (host->pio_active == XFER_READ) ? "read" : "write", in pio_tasklet()
574 host->pio_count, host->pio_bytes); in pio_tasklet()
576 if (host->mrq->data) in pio_tasklet()
577 host->mrq->data->error = -EINVAL; in pio_tasklet()
589 * host->mrq points to current request
590 * host->complete_what Indicates when the request is considered done
595 * host->complete_request is the completion-object the driver waits for
597 * 1) Driver sets up host->mrq and host->complete_what
601 * 5) Driver waits for host->complete_rquest
603 * 6) ISR sets host->mrq->cmd->error and host->mrq->data->error
604 * 7) ISR completes host->complete_request
608 * Note: "->error"-fields are expected to be set to 0 before the request
609 * was issued by mmc.c - therefore they are only set, when an error
621 mci_dsta = readl(host->base + S3C2410_SDIDSTA); in s3cmci_irq()
622 mci_imsk = readl(host->base + host->sdiimsk); in s3cmci_irq()
627 writel(mci_dclear, host->base + S3C2410_SDIDSTA); in s3cmci_irq()
629 mmc_signal_sdio_irq(host->mmc); in s3cmci_irq()
634 spin_lock_irqsave(&host->complete_lock, iflags); in s3cmci_irq()
636 mci_csta = readl(host->base + S3C2410_SDICMDSTAT); in s3cmci_irq()
637 mci_dcnt = readl(host->base + S3C2410_SDIDCNT); in s3cmci_irq()
638 mci_fsta = readl(host->base + S3C2410_SDIFSTA); in s3cmci_irq()
641 if ((host->complete_what == COMPLETION_NONE) || in s3cmci_irq()
642 (host->complete_what == COMPLETION_FINALIZE)) { in s3cmci_irq()
643 host->status = "nothing to complete"; in s3cmci_irq()
648 if (!host->mrq) { in s3cmci_irq()
649 host->status = "no active mrq"; in s3cmci_irq()
654 cmd = host->cmd_is_stop ? host->mrq->stop : host->mrq->cmd; in s3cmci_irq()
657 host->status = "no active cmd"; in s3cmci_irq()
663 if ((host->pio_active == XFER_WRITE) && in s3cmci_irq()
667 tasklet_schedule(&host->pio_tasklet); in s3cmci_irq()
668 host->status = "pio tx"; in s3cmci_irq()
671 if ((host->pio_active == XFER_READ) && in s3cmci_irq()
678 tasklet_schedule(&host->pio_tasklet); in s3cmci_irq()
679 host->status = "pio rx"; in s3cmci_irq()
685 cmd->error = -ETIMEDOUT; in s3cmci_irq()
686 host->status = "error: command timeout"; in s3cmci_irq()
691 if (host->complete_what == COMPLETION_CMDSENT) { in s3cmci_irq()
692 host->status = "ok: command sent"; in s3cmci_irq()
700 if (cmd->flags & MMC_RSP_CRC) { in s3cmci_irq()
701 if (host->mrq->cmd->flags & MMC_RSP_136) { in s3cmci_irq()
709 * cmd->error = -EILSEQ; in s3cmci_irq()
710 * host->status = "error: bad command crc"; in s3cmci_irq()
720 if (host->complete_what == COMPLETION_RSPFIN) { in s3cmci_irq()
721 host->status = "ok: command response received"; in s3cmci_irq()
725 if (host->complete_what == COMPLETION_XFERFINISH_RSPFIN) in s3cmci_irq()
726 host->complete_what = COMPLETION_XFERFINISH; in s3cmci_irq()
734 if (!cmd->data) in s3cmci_irq()
738 if (host->is2440) { in s3cmci_irq()
741 host->mrq->data->error = -EILSEQ; in s3cmci_irq()
742 host->status = "error: 2440 fifo failure"; in s3cmci_irq()
748 cmd->data->error = -EILSEQ; in s3cmci_irq()
749 host->status = "error: fifo failure"; in s3cmci_irq()
756 cmd->data->error = -EILSEQ; in s3cmci_irq()
757 host->status = "error: bad data crc (outgoing)"; in s3cmci_irq()
763 cmd->data->error = -EILSEQ; in s3cmci_irq()
764 host->status = "error: bad data crc (incoming)"; in s3cmci_irq()
770 cmd->data->error = -ETIMEDOUT; in s3cmci_irq()
771 host->status = "error: data timeout"; in s3cmci_irq()
776 if (host->complete_what == COMPLETION_XFERFINISH) { in s3cmci_irq()
777 host->status = "ok: data transfer completed"; in s3cmci_irq()
781 if (host->complete_what == COMPLETION_XFERFINISH_RSPFIN) in s3cmci_irq()
782 host->complete_what = COMPLETION_RSPFIN; in s3cmci_irq()
788 writel(mci_cclear, host->base + S3C2410_SDICMDSTAT); in s3cmci_irq()
789 writel(mci_dclear, host->base + S3C2410_SDIDSTA); in s3cmci_irq()
794 host->pio_active = XFER_NONE; in s3cmci_irq()
797 host->complete_what = COMPLETION_FINALIZE; in s3cmci_irq()
800 tasklet_schedule(&host->pio_tasklet); in s3cmci_irq()
807 mci_csta, mci_dsta, mci_fsta, mci_dcnt, host->status); in s3cmci_irq()
809 spin_unlock_irqrestore(&host->complete_lock, iflags); in s3cmci_irq()
819 BUG_ON(!host->mrq); in s3cmci_dma_done_callback()
820 BUG_ON(!host->mrq->data); in s3cmci_dma_done_callback()
822 spin_lock_irqsave(&host->complete_lock, iflags); in s3cmci_dma_done_callback()
826 host->dma_complete = 1; in s3cmci_dma_done_callback()
827 host->complete_what = COMPLETION_FINALIZE; in s3cmci_dma_done_callback()
829 tasklet_schedule(&host->pio_tasklet); in s3cmci_dma_done_callback()
830 spin_unlock_irqrestore(&host->complete_lock, iflags); in s3cmci_dma_done_callback()
836 struct mmc_request *mrq = host->mrq; in finalize_request()
840 if (host->complete_what != COMPLETION_FINALIZE) in finalize_request()
845 cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd; in finalize_request()
847 if (cmd->data && (cmd->error == 0) && in finalize_request()
848 (cmd->data->error == 0)) { in finalize_request()
849 if (s3cmci_host_usedma(host) && (!host->dma_complete)) { in finalize_request()
851 host->dma_complete); in finalize_request()
857 cmd->resp[0] = readl(host->base + S3C2410_SDIRSP0); in finalize_request()
858 cmd->resp[1] = readl(host->base + S3C2410_SDIRSP1); in finalize_request()
859 cmd->resp[2] = readl(host->base + S3C2410_SDIRSP2); in finalize_request()
860 cmd->resp[3] = readl(host->base + S3C2410_SDIRSP3); in finalize_request()
862 writel(host->prescaler, host->base + S3C2410_SDIPRE); in finalize_request()
864 if (cmd->error) in finalize_request()
867 if (cmd->data && cmd->data->error) in finalize_request()
873 writel(0, host->base + S3C2410_SDICMDARG); in finalize_request()
874 writel(S3C2410_SDIDCON_STOP, host->base + S3C2410_SDIDCON); in finalize_request()
875 writel(0, host->base + S3C2410_SDICMDCON); in finalize_request()
878 if (cmd->data && cmd->error) in finalize_request()
879 cmd->data->error = cmd->error; in finalize_request()
881 if (cmd->data && cmd->data->stop && (!host->cmd_is_stop)) { in finalize_request()
882 host->cmd_is_stop = 1; in finalize_request()
883 s3cmci_send_request(host->mmc); in finalize_request()
887 /* If we have no data transfer we are finished here */ in finalize_request()
888 if (!mrq->data) in finalize_request()
891 /* Calculate the amout of bytes transfer if there was no error */ in finalize_request()
892 if (mrq->data->error == 0) { in finalize_request()
893 mrq->data->bytes_xfered = in finalize_request()
894 (mrq->data->blocks * mrq->data->blksz); in finalize_request()
896 mrq->data->bytes_xfered = 0; in finalize_request()
901 if (mrq->data->error != 0) { in finalize_request()
903 dmaengine_terminate_all(host->dma); in finalize_request()
905 if (host->is2440) { in finalize_request()
909 host->base + S3C2410_SDIFSTA); in finalize_request()
914 mci_con = readl(host->base + S3C2410_SDICON); in finalize_request()
917 writel(mci_con, host->base + S3C2410_SDICON); in finalize_request()
922 host->complete_what = COMPLETION_NONE; in finalize_request()
923 host->mrq = NULL; in finalize_request()
926 mmc_request_done(host->mmc, mrq); in finalize_request()
940 if (cmd->data) in s3cmci_send_command()
941 host->complete_what = COMPLETION_XFERFINISH_RSPFIN; in s3cmci_send_command()
942 else if (cmd->flags & MMC_RSP_PRESENT) in s3cmci_send_command()
943 host->complete_what = COMPLETION_RSPFIN; in s3cmci_send_command()
945 host->complete_what = COMPLETION_CMDSENT; in s3cmci_send_command()
947 writel(cmd->arg, host->base + S3C2410_SDICMDARG); in s3cmci_send_command()
949 ccon = cmd->opcode & S3C2410_SDICMDCON_INDEX; in s3cmci_send_command()
952 if (cmd->flags & MMC_RSP_PRESENT) in s3cmci_send_command()
955 if (cmd->flags & MMC_RSP_136) in s3cmci_send_command()
958 writel(ccon, host->base + S3C2410_SDICMDCON); in s3cmci_send_command()
968 writel(0, host->base + S3C2410_SDIDCON); in s3cmci_setup_data()
972 if ((data->blksz & 3) != 0) { in s3cmci_setup_data()
976 if (data->blocks > 1) { in s3cmci_setup_data()
977 pr_warn("%s: can't do non-word sized block transfers (blksz %d)\n", in s3cmci_setup_data()
978 __func__, data->blksz); in s3cmci_setup_data()
979 return -EINVAL; in s3cmci_setup_data()
983 while (readl(host->base + S3C2410_SDIDSTA) & in s3cmci_setup_data()
989 writel(S3C2410_SDIDCON_STOP, host->base + S3C2410_SDIDCON); in s3cmci_setup_data()
992 if ((stoptries--) == 0) { in s3cmci_setup_data()
994 return -EINVAL; in s3cmci_setup_data()
998 dcon = data->blocks & S3C2410_SDIDCON_BLKNUM_MASK; in s3cmci_setup_data()
1003 if (host->bus_width == MMC_BUS_WIDTH_4) in s3cmci_setup_data()
1008 if (data->flags & MMC_DATA_WRITE) { in s3cmci_setup_data()
1013 if (data->flags & MMC_DATA_READ) { in s3cmci_setup_data()
1018 if (host->is2440) { in s3cmci_setup_data()
1023 writel(dcon, host->base + S3C2410_SDIDCON); in s3cmci_setup_data()
1027 writel(data->blksz, host->base + S3C2410_SDIBSIZE); in s3cmci_setup_data()
1037 if (host->is2440) { in s3cmci_setup_data()
1038 writel(0x007FFFFF, host->base + S3C2410_SDITIMER); in s3cmci_setup_data()
1040 writel(0x0000FFFF, host->base + S3C2410_SDITIMER); in s3cmci_setup_data()
1043 if (data->flags & MMC_DATA_READ) in s3cmci_setup_data()
1044 writel(0xFF, host->base + S3C2410_SDIPRE); in s3cmci_setup_data()
1054 int rw = (data->flags & MMC_DATA_WRITE) ? 1 : 0; in s3cmci_prepare_pio()
1056 BUG_ON((data->flags & BOTH_DIR) == BOTH_DIR); in s3cmci_prepare_pio()
1058 host->pio_sgptr = 0; in s3cmci_prepare_pio()
1059 host->pio_bytes = 0; in s3cmci_prepare_pio()
1060 host->pio_count = 0; in s3cmci_prepare_pio()
1061 host->pio_active = rw ? XFER_WRITE : XFER_READ; in s3cmci_prepare_pio()
1076 int rw = data->flags & MMC_DATA_WRITE; in s3cmci_prepare_dma()
1079 .src_addr = host->mem->start + host->sdidata, in s3cmci_prepare_dma()
1080 .dst_addr = host->mem->start + host->sdidata, in s3cmci_prepare_dma()
1085 BUG_ON((data->flags & BOTH_DIR) == BOTH_DIR); in s3cmci_prepare_dma()
1088 writel(host->prescaler, host->base + S3C2410_SDIPRE); in s3cmci_prepare_dma()
1095 dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, in s3cmci_prepare_dma()
1098 dmaengine_slave_config(host->dma, &conf); in s3cmci_prepare_dma()
1099 desc = dmaengine_prep_slave_sg(host->dma, data->sg, data->sg_len, in s3cmci_prepare_dma()
1104 desc->callback = s3cmci_dma_done_callback; in s3cmci_prepare_dma()
1105 desc->callback_param = host; in s3cmci_prepare_dma()
1107 dma_async_issue_pending(host->dma); in s3cmci_prepare_dma()
1112 dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, in s3cmci_prepare_dma()
1114 return -ENOMEM; in s3cmci_prepare_dma()
1117 static void s3cmci_send_request(struct mmc_host *mmc) in s3cmci_send_request() argument
1119 struct s3cmci_host *host = mmc_priv(mmc); in s3cmci_send_request()
1120 struct mmc_request *mrq = host->mrq; in s3cmci_send_request()
1121 struct mmc_command *cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd; in s3cmci_send_request()
1123 host->ccnt++; in s3cmci_send_request()
1124 prepare_dbgmsg(host, cmd, host->cmd_is_stop); in s3cmci_send_request()
1129 writel(0xFFFFFFFF, host->base + S3C2410_SDICMDSTAT); in s3cmci_send_request()
1130 writel(0xFFFFFFFF, host->base + S3C2410_SDIDSTA); in s3cmci_send_request()
1131 writel(0xFFFFFFFF, host->base + S3C2410_SDIFSTA); in s3cmci_send_request()
1133 if (cmd->data) { in s3cmci_send_request()
1134 int res = s3cmci_setup_data(host, cmd->data); in s3cmci_send_request()
1136 host->dcnt++; in s3cmci_send_request()
1140 cmd->error = res; in s3cmci_send_request()
1141 cmd->data->error = res; in s3cmci_send_request()
1143 mmc_request_done(mmc, mrq); in s3cmci_send_request()
1148 res = s3cmci_prepare_dma(host, cmd->data); in s3cmci_send_request()
1150 res = s3cmci_prepare_pio(host, cmd->data); in s3cmci_send_request()
1154 cmd->error = res; in s3cmci_send_request()
1155 cmd->data->error = res; in s3cmci_send_request()
1157 mmc_request_done(mmc, mrq); in s3cmci_send_request()
1169 static void s3cmci_request(struct mmc_host *mmc, struct mmc_request *mrq) in s3cmci_request() argument
1171 struct s3cmci_host *host = mmc_priv(mmc); in s3cmci_request()
1173 host->status = "mmc request"; in s3cmci_request()
1174 host->cmd_is_stop = 0; in s3cmci_request()
1175 host->mrq = mrq; in s3cmci_request()
1177 if (mmc_gpio_get_cd(mmc) == 0) { in s3cmci_request()
1178 dbg(host, dbg_err, "%s: no medium present\n", __func__); in s3cmci_request()
1179 host->mrq->cmd->error = -ENOMEDIUM; in s3cmci_request()
1180 mmc_request_done(mmc, mrq); in s3cmci_request()
1182 s3cmci_send_request(mmc); in s3cmci_request()
1191 host->real_rate = host->clk_rate / (host->clk_div*(mci_psc+1)); in s3cmci_set_clk()
1193 if (host->real_rate <= ios->clock) in s3cmci_set_clk()
1200 host->prescaler = mci_psc; in s3cmci_set_clk()
1201 writel(host->prescaler, host->base + S3C2410_SDIPRE); in s3cmci_set_clk()
1204 if (ios->clock == 0) in s3cmci_set_clk()
1205 host->real_rate = 0; in s3cmci_set_clk()
1208 static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) in s3cmci_set_ios() argument
1210 struct s3cmci_host *host = mmc_priv(mmc); in s3cmci_set_ios()
1215 mci_con = readl(host->base + S3C2410_SDICON); in s3cmci_set_ios()
1217 switch (ios->power_mode) { in s3cmci_set_ios()
1221 if (!host->pdev->dev.of_node) in s3cmci_set_ios()
1225 if (host->pdata->set_power) in s3cmci_set_ios()
1226 host->pdata->set_power(ios->power_mode, ios->vdd); in s3cmci_set_ios()
1228 if (!host->is2440) in s3cmci_set_ios()
1235 if (!host->pdev->dev.of_node) in s3cmci_set_ios()
1238 if (host->is2440) in s3cmci_set_ios()
1241 if (host->pdata->set_power) in s3cmci_set_ios()
1242 host->pdata->set_power(ios->power_mode, ios->vdd); in s3cmci_set_ios()
1250 if (ios->clock) in s3cmci_set_ios()
1255 writel(mci_con, host->base + S3C2410_SDICON); in s3cmci_set_ios()
1257 if ((ios->power_mode == MMC_POWER_ON) || in s3cmci_set_ios()
1258 (ios->power_mode == MMC_POWER_UP)) { in s3cmci_set_ios()
1260 host->real_rate/1000, ios->clock/1000); in s3cmci_set_ios()
1265 host->bus_width = ios->bus_width; in s3cmci_set_ios()
1270 u32 con = readl(host->base + S3C2410_SDICON); in s3cmci_reset()
1273 writel(con, host->base + S3C2410_SDICON); in s3cmci_reset()
1276 static void s3cmci_enable_sdio_irq(struct mmc_host *mmc, int enable) in s3cmci_enable_sdio_irq() argument
1278 struct s3cmci_host *host = mmc_priv(mmc); in s3cmci_enable_sdio_irq()
1284 con = readl(host->base + S3C2410_SDICON); in s3cmci_enable_sdio_irq()
1285 host->sdio_irqen = enable; in s3cmci_enable_sdio_irq()
1287 if (enable == host->sdio_irqen) in s3cmci_enable_sdio_irq()
1294 if (!host->irq_state && !host->irq_disabled) { in s3cmci_enable_sdio_irq()
1295 host->irq_state = true; in s3cmci_enable_sdio_irq()
1296 enable_irq(host->irq); in s3cmci_enable_sdio_irq()
1302 if (!host->irq_enabled && host->irq_state) { in s3cmci_enable_sdio_irq()
1303 disable_irq_nosync(host->irq); in s3cmci_enable_sdio_irq()
1304 host->irq_state = false; in s3cmci_enable_sdio_irq()
1308 writel(con, host->base + S3C2410_SDICON); in s3cmci_enable_sdio_irq()
1325 /* This is currently here to avoid a number of if (host->pdata)
1337 struct mmc_host *mmc; in s3cmci_cpufreq_transition() local
1342 newclk = clk_get_rate(host->clk); in s3cmci_cpufreq_transition()
1343 mmc = host->mmc; in s3cmci_cpufreq_transition()
1345 if ((val == CPUFREQ_PRECHANGE && newclk > host->clk_rate) || in s3cmci_cpufreq_transition()
1346 (val == CPUFREQ_POSTCHANGE && newclk < host->clk_rate)) { in s3cmci_cpufreq_transition()
1347 spin_lock_irqsave(&mmc->lock, flags); in s3cmci_cpufreq_transition()
1349 host->clk_rate = newclk; in s3cmci_cpufreq_transition()
1351 if (mmc->ios.power_mode != MMC_POWER_OFF && in s3cmci_cpufreq_transition()
1352 mmc->ios.clock != 0) in s3cmci_cpufreq_transition()
1353 s3cmci_set_clk(host, &mmc->ios); in s3cmci_cpufreq_transition()
1355 spin_unlock_irqrestore(&mmc->lock, flags); in s3cmci_cpufreq_transition()
1363 host->freq_transition.notifier_call = s3cmci_cpufreq_transition; in s3cmci_cpufreq_register()
1365 return cpufreq_register_notifier(&host->freq_transition, in s3cmci_cpufreq_register()
1371 cpufreq_unregister_notifier(&host->freq_transition, in s3cmci_cpufreq_deregister()
1391 struct s3cmci_host *host = seq->private; in s3cmci_state_show()
1393 seq_printf(seq, "Register base = 0x%08x\n", (u32)host->base); in s3cmci_state_show()
1394 seq_printf(seq, "Clock rate = %ld\n", host->clk_rate); in s3cmci_state_show()
1395 seq_printf(seq, "Prescale = %d\n", host->prescaler); in s3cmci_state_show()
1396 seq_printf(seq, "is2440 = %d\n", host->is2440); in s3cmci_state_show()
1397 seq_printf(seq, "IRQ = %d\n", host->irq); in s3cmci_state_show()
1398 seq_printf(seq, "IRQ enabled = %d\n", host->irq_enabled); in s3cmci_state_show()
1399 seq_printf(seq, "IRQ disabled = %d\n", host->irq_disabled); in s3cmci_state_show()
1400 seq_printf(seq, "IRQ state = %d\n", host->irq_state); in s3cmci_state_show()
1401 seq_printf(seq, "CD IRQ = %d\n", host->irq_cd); in s3cmci_state_show()
1403 seq_printf(seq, "SDIIMSK at %d\n", host->sdiimsk); in s3cmci_state_show()
1404 seq_printf(seq, "SDIDATA at %d\n", host->sdidata); in s3cmci_state_show()
1411 return single_open(file, s3cmci_state_show, inode->i_private); in s3cmci_state_open()
1450 struct s3cmci_host *host = seq->private; in s3cmci_regs_show()
1453 for (; rptr->name; rptr++) in s3cmci_regs_show()
1454 seq_printf(seq, "SDI%s\t=0x%08x\n", rptr->name, in s3cmci_regs_show()
1455 readl(host->base + rptr->addr)); in s3cmci_regs_show()
1457 seq_printf(seq, "SDIIMSK\t=0x%08x\n", readl(host->base + host->sdiimsk)); in s3cmci_regs_show()
1464 return single_open(file, s3cmci_regs_show, inode->i_private); in s3cmci_regs_open()
1477 struct device *dev = &host->pdev->dev; in s3cmci_debugfs_attach()
1479 host->debug_root = debugfs_create_dir(dev_name(dev), NULL); in s3cmci_debugfs_attach()
1480 if (IS_ERR(host->debug_root)) { in s3cmci_debugfs_attach()
1485 host->debug_state = debugfs_create_file("state", 0444, in s3cmci_debugfs_attach()
1486 host->debug_root, host, in s3cmci_debugfs_attach()
1489 if (IS_ERR(host->debug_state)) in s3cmci_debugfs_attach()
1492 host->debug_regs = debugfs_create_file("regs", 0444, in s3cmci_debugfs_attach()
1493 host->debug_root, host, in s3cmci_debugfs_attach()
1496 if (IS_ERR(host->debug_regs)) in s3cmci_debugfs_attach()
1502 debugfs_remove(host->debug_regs); in s3cmci_debugfs_remove()
1503 debugfs_remove(host->debug_state); in s3cmci_debugfs_remove()
1504 debugfs_remove(host->debug_root); in s3cmci_debugfs_remove()
1515 struct platform_device *pdev = host->pdev; in s3cmci_probe_pdata()
1516 struct mmc_host *mmc = host->mmc; in s3cmci_probe_pdata() local
1520 host->is2440 = platform_get_device_id(pdev)->driver_data; in s3cmci_probe_pdata()
1523 ret = gpio_request(i, dev_name(&pdev->dev)); in s3cmci_probe_pdata()
1525 dev_err(&pdev->dev, "failed to get gpio %d\n", i); in s3cmci_probe_pdata()
1527 for (i--; i >= S3C2410_GPE(5); i--) in s3cmci_probe_pdata()
1534 if (!pdev->dev.platform_data) in s3cmci_probe_pdata()
1535 pdev->dev.platform_data = &s3cmci_def_pdata; in s3cmci_probe_pdata()
1537 pdata = pdev->dev.platform_data; in s3cmci_probe_pdata()
1539 if (pdata->no_wprotect) in s3cmci_probe_pdata()
1540 mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT; in s3cmci_probe_pdata()
1542 if (pdata->no_detect) in s3cmci_probe_pdata()
1543 mmc->caps |= MMC_CAP_NEEDS_POLL; in s3cmci_probe_pdata()
1545 if (pdata->wprotect_invert) in s3cmci_probe_pdata()
1546 mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; in s3cmci_probe_pdata()
1548 if (pdata->detect_invert) in s3cmci_probe_pdata()
1549 mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; in s3cmci_probe_pdata()
1551 if (gpio_is_valid(pdata->gpio_detect)) { in s3cmci_probe_pdata()
1552 ret = mmc_gpio_request_cd(mmc, pdata->gpio_detect, 0); in s3cmci_probe_pdata()
1554 dev_err(&pdev->dev, "error requesting GPIO for CD %d\n", in s3cmci_probe_pdata()
1560 if (gpio_is_valid(pdata->gpio_wprotect)) { in s3cmci_probe_pdata()
1561 ret = mmc_gpio_request_ro(mmc, pdata->gpio_wprotect); in s3cmci_probe_pdata()
1563 dev_err(&pdev->dev, "error requesting GPIO for WP %d\n", in s3cmci_probe_pdata()
1574 struct platform_device *pdev = host->pdev; in s3cmci_probe_dt()
1576 struct mmc_host *mmc = host->mmc; in s3cmci_probe_dt() local
1579 host->is2440 = (int) of_device_get_match_data(&pdev->dev); in s3cmci_probe_dt()
1581 ret = mmc_of_parse(mmc); in s3cmci_probe_dt()
1585 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in s3cmci_probe_dt()
1587 return -ENOMEM; in s3cmci_probe_dt()
1589 pdev->dev.platform_data = pdata; in s3cmci_probe_dt()
1597 struct mmc_host *mmc; in s3cmci_probe() local
1601 mmc = mmc_alloc_host(sizeof(struct s3cmci_host), &pdev->dev); in s3cmci_probe()
1602 if (!mmc) { in s3cmci_probe()
1603 ret = -ENOMEM; in s3cmci_probe()
1607 host = mmc_priv(mmc); in s3cmci_probe()
1608 host->mmc = mmc; in s3cmci_probe()
1609 host->pdev = pdev; in s3cmci_probe()
1611 if (pdev->dev.of_node) in s3cmci_probe()
1619 host->pdata = pdev->dev.platform_data; in s3cmci_probe()
1621 spin_lock_init(&host->complete_lock); in s3cmci_probe()
1622 tasklet_init(&host->pio_tasklet, pio_tasklet, (unsigned long) host); in s3cmci_probe()
1624 if (host->is2440) { in s3cmci_probe()
1625 host->sdiimsk = S3C2440_SDIIMSK; in s3cmci_probe()
1626 host->sdidata = S3C2440_SDIDATA; in s3cmci_probe()
1627 host->clk_div = 1; in s3cmci_probe()
1629 host->sdiimsk = S3C2410_SDIIMSK; in s3cmci_probe()
1630 host->sdidata = S3C2410_SDIDATA; in s3cmci_probe()
1631 host->clk_div = 2; in s3cmci_probe()
1634 host->complete_what = COMPLETION_NONE; in s3cmci_probe()
1635 host->pio_active = XFER_NONE; in s3cmci_probe()
1637 host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); in s3cmci_probe()
1638 if (!host->mem) { in s3cmci_probe()
1639 dev_err(&pdev->dev, in s3cmci_probe()
1642 ret = -ENOENT; in s3cmci_probe()
1646 host->mem = request_mem_region(host->mem->start, in s3cmci_probe()
1647 resource_size(host->mem), pdev->name); in s3cmci_probe()
1649 if (!host->mem) { in s3cmci_probe()
1650 dev_err(&pdev->dev, "failed to request io memory region.\n"); in s3cmci_probe()
1651 ret = -ENOENT; in s3cmci_probe()
1655 host->base = ioremap(host->mem->start, resource_size(host->mem)); in s3cmci_probe()
1656 if (!host->base) { in s3cmci_probe()
1657 dev_err(&pdev->dev, "failed to ioremap() io memory region.\n"); in s3cmci_probe()
1658 ret = -EINVAL; in s3cmci_probe()
1662 host->irq = platform_get_irq(pdev, 0); in s3cmci_probe()
1663 if (host->irq <= 0) { in s3cmci_probe()
1664 dev_err(&pdev->dev, "failed to get interrupt resource.\n"); in s3cmci_probe()
1665 ret = -EINVAL; in s3cmci_probe()
1669 if (request_irq(host->irq, s3cmci_irq, 0, DRIVER_NAME, host)) { in s3cmci_probe()
1670 dev_err(&pdev->dev, "failed to request mci interrupt.\n"); in s3cmci_probe()
1671 ret = -ENOENT; in s3cmci_probe()
1677 * ensure we don't lock the system with un-serviceable requests. */ in s3cmci_probe()
1679 disable_irq(host->irq); in s3cmci_probe()
1680 host->irq_state = false; in s3cmci_probe()
1685 host->dma = dma_request_chan(&pdev->dev, "rx-tx"); in s3cmci_probe()
1686 ret = PTR_ERR_OR_ZERO(host->dma); in s3cmci_probe()
1688 dev_err(&pdev->dev, "cannot get DMA channel.\n"); in s3cmci_probe()
1693 host->clk = clk_get(&pdev->dev, "sdi"); in s3cmci_probe()
1694 if (IS_ERR(host->clk)) { in s3cmci_probe()
1695 dev_err(&pdev->dev, "failed to find clock source.\n"); in s3cmci_probe()
1696 ret = PTR_ERR(host->clk); in s3cmci_probe()
1697 host->clk = NULL; in s3cmci_probe()
1701 ret = clk_prepare_enable(host->clk); in s3cmci_probe()
1703 dev_err(&pdev->dev, "failed to enable clock source.\n"); in s3cmci_probe()
1707 host->clk_rate = clk_get_rate(host->clk); in s3cmci_probe()
1709 mmc->ops = &s3cmci_ops; in s3cmci_probe()
1710 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; in s3cmci_probe()
1712 mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; in s3cmci_probe()
1714 mmc->caps = MMC_CAP_4_BIT_DATA; in s3cmci_probe()
1716 mmc->f_min = host->clk_rate / (host->clk_div * 256); in s3cmci_probe()
1717 mmc->f_max = host->clk_rate / host->clk_div; in s3cmci_probe()
1719 if (host->pdata->ocr_avail) in s3cmci_probe()
1720 mmc->ocr_avail = host->pdata->ocr_avail; in s3cmci_probe()
1722 mmc->max_blk_count = 4095; in s3cmci_probe()
1723 mmc->max_blk_size = 4095; in s3cmci_probe()
1724 mmc->max_req_size = 4095 * 512; in s3cmci_probe()
1725 mmc->max_seg_size = mmc->max_req_size; in s3cmci_probe()
1727 mmc->max_segs = 128; in s3cmci_probe()
1731 (host->is2440?"2440":""), in s3cmci_probe()
1732 host->base, host->irq, host->irq_cd, host->dma); in s3cmci_probe()
1736 dev_err(&pdev->dev, "failed to register cpufreq\n"); in s3cmci_probe()
1740 ret = mmc_add_host(mmc); in s3cmci_probe()
1742 dev_err(&pdev->dev, "failed to add mmc host.\n"); in s3cmci_probe()
1748 platform_set_drvdata(pdev, mmc); in s3cmci_probe()
1749 dev_info(&pdev->dev, "%s - using %s, %s SDIO IRQ\n", mmc_hostname(mmc), in s3cmci_probe()
1751 mmc->caps & MMC_CAP_SDIO_IRQ ? "hw" : "sw"); in s3cmci_probe()
1759 clk_disable_unprepare(host->clk); in s3cmci_probe()
1762 clk_put(host->clk); in s3cmci_probe()
1766 dma_release_channel(host->dma); in s3cmci_probe()
1769 free_irq(host->irq, host); in s3cmci_probe()
1772 iounmap(host->base); in s3cmci_probe()
1775 release_mem_region(host->mem->start, resource_size(host->mem)); in s3cmci_probe()
1778 if (!pdev->dev.of_node) in s3cmci_probe()
1783 mmc_free_host(mmc); in s3cmci_probe()
1791 struct mmc_host *mmc = platform_get_drvdata(pdev); in s3cmci_shutdown() local
1792 struct s3cmci_host *host = mmc_priv(mmc); in s3cmci_shutdown()
1794 if (host->irq_cd >= 0) in s3cmci_shutdown()
1795 free_irq(host->irq_cd, host); in s3cmci_shutdown()
1799 mmc_remove_host(mmc); in s3cmci_shutdown()
1800 clk_disable_unprepare(host->clk); in s3cmci_shutdown()
1805 struct mmc_host *mmc = platform_get_drvdata(pdev); in s3cmci_remove() local
1806 struct s3cmci_host *host = mmc_priv(mmc); in s3cmci_remove()
1811 clk_put(host->clk); in s3cmci_remove()
1813 tasklet_disable(&host->pio_tasklet); in s3cmci_remove()
1816 dma_release_channel(host->dma); in s3cmci_remove()
1818 free_irq(host->irq, host); in s3cmci_remove()
1820 if (!pdev->dev.of_node) in s3cmci_remove()
1824 iounmap(host->base); in s3cmci_remove()
1825 release_mem_region(host->mem->start, resource_size(host->mem)); in s3cmci_remove()
1827 mmc_free_host(mmc); in s3cmci_remove()
1833 .compatible = "samsung,s3c2410-sdi",
1837 .compatible = "samsung,s3c2412-sdi",
1841 .compatible = "samsung,s3c2440-sdi",
1850 .name = "s3c2410-sdi",
1853 .name = "s3c2412-sdi",
1856 .name = "s3c2440-sdi",
1866 .name = "s3c-sdi",
1877 MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver");
1879 MODULE_AUTHOR("Thomas Kleffel <tk@maintech.de>, Ben Dooks <ben-linux@fluff.org>");