1 // SPDX-License-Identifier: GPL-2.0-only
3  * linux/drivers/mmc/host/au1xmmc.c - AU1XX0 MMC driver
5  *  Copyright (c) 2005, Advanced Micro Devices, Inc.
9  *     Copyright (c) 2003-2004 Embedded Edge, LLC.
11  *     Copyright 2002 Hewlett-Packard Company
14  *     (drivers/mmc/wbsd.c) Copyright (C) 2004-2005 Pierre Ossman,
25  * If the Au1100-based design is intended to support both MultiMediaCards
26  * and 1- or 4-data bit SecureDigital cards, then the solution is to
27  * connect a weak (560KOhm) pull-up resistor to connector pin 1.
28  * In doing so, a MMC card never enters SPI-mode communications,
29  * but now the SecureDigital card-detect feature of CD/DAT3 is ineffective
39 #include <linux/dma-mapping.h>
48 #include <asm/mach-au1x00/au1000.h>
49 #include <asm/mach-au1x00/au1xxx_dbdma.h>
50 #include <asm/mach-au1x00/au1100_mmc.h>
52 #define DRIVER_NAME "au1xxx-mmc"
139 #define HOST_STATUS(h)	((h)->iobase + SD_STATUS)
140 #define HOST_CONFIG(h)	((h)->iobase + SD_CONFIG)
141 #define HOST_ENABLE(h)	((h)->iobase + SD_ENABLE)
142 #define HOST_TXPORT(h)	((h)->iobase + SD_TXPORT)
143 #define HOST_RXPORT(h)	((h)->iobase + SD_RXPORT)
144 #define HOST_CMDARG(h)	((h)->iobase + SD_CMDARG)
145 #define HOST_BLKSIZE(h)	((h)->iobase + SD_BLKSIZE)
146 #define HOST_CMD(h)	((h)->iobase + SD_CMD)
147 #define HOST_CONFIG2(h)	((h)->iobase + SD_CONFIG2)
148 #define HOST_TIMEOUT(h)	((h)->iobase + SD_TIMEOUT)
149 #define HOST_DEBUG(h)	((h)->iobase + SD_DEBUG)
152 	(((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
181 	/* SEND_STOP will turn off clock control - this re-enables it */  in FLUSH_FIFO()
200 	WARN_ON(host->status != HOST_S_DATA);  in SEND_STOP()
201 	host->status = HOST_S_STOP;  in SEND_STOP()
214 	if (host->platdata && host->platdata->set_power)  in au1xmmc_set_power()
215 		host->platdata->set_power(host->mmc, state);  in au1xmmc_set_power()
222 	if (host->platdata && host->platdata->card_inserted)  in au1xmmc_card_inserted()
223 		return !!host->platdata->card_inserted(host->mmc);  in au1xmmc_card_inserted()
225 	return -ENOSYS;  in au1xmmc_card_inserted()
232 	if (host->platdata && host->platdata->card_readonly)  in au1xmmc_card_readonly()
233 		return !!host->platdata->card_readonly(mmc);  in au1xmmc_card_readonly()
235 	return -ENOSYS;  in au1xmmc_card_readonly()
240 	struct mmc_request *mrq = host->mrq;  in au1xmmc_finish_request()
242 	host->mrq = NULL;  in au1xmmc_finish_request()
243 	host->flags &= HOST_F_ACTIVE | HOST_F_DMA;  in au1xmmc_finish_request()
245 	host->dma.len = 0;  in au1xmmc_finish_request()
246 	host->dma.dir = 0;  in au1xmmc_finish_request()
248 	host->pio.index  = 0;  in au1xmmc_finish_request()
249 	host->pio.offset = 0;  in au1xmmc_finish_request()
250 	host->pio.len = 0;  in au1xmmc_finish_request()
252 	host->status = HOST_S_IDLE;  in au1xmmc_finish_request()
254 	mmc_request_done(host->mmc, mrq);  in au1xmmc_finish_request()
266 	u32 mmccmd = (cmd->opcode << SD_CMD_CI_SHIFT);  in au1xmmc_send_command()
286 		return -EINVAL;  in au1xmmc_send_command()
290 		if (data->flags & MMC_DATA_READ) {  in au1xmmc_send_command()
291 			if (data->blocks > 1)  in au1xmmc_send_command()
295 		} else if (data->flags & MMC_DATA_WRITE) {  in au1xmmc_send_command()
296 			if (data->blocks > 1)  in au1xmmc_send_command()
303 	__raw_writel(cmd->arg, HOST_CMDARG(host));  in au1xmmc_send_command()
318 	struct mmc_request *mrq = host->mrq;  in au1xmmc_data_complete()
322 	WARN_ON((host->status != HOST_S_DATA) && (host->status != HOST_S_STOP));  in au1xmmc_data_complete()
324 	if (host->mrq == NULL)  in au1xmmc_data_complete()
327 	data = mrq->cmd->data;  in au1xmmc_data_complete()
333 	while ((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))  in au1xmmc_data_complete()
336 	data->error = 0;  in au1xmmc_data_complete()
337 	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma.dir);  in au1xmmc_data_complete()
341 	if (host->flags & HOST_F_XMIT)  in au1xmmc_data_complete()
345 		data->error = -EILSEQ;  in au1xmmc_data_complete()
350 	data->bytes_xfered = 0;  in au1xmmc_data_complete()
352 	if (!data->error) {  in au1xmmc_data_complete()
353 		if (host->flags & (HOST_F_DMA | HOST_F_DBDMA)) {  in au1xmmc_data_complete()
357 			au1x_dma_chan_t *cp = c->chan_ptr;  in au1xmmc_data_complete()
358 			data->bytes_xfered = cp->ddma_bytecnt;  in au1xmmc_data_complete()
360 			data->bytes_xfered =  in au1xmmc_data_complete()
361 				(data->blocks * data->blksz) - host->pio.len;  in au1xmmc_data_complete()
383 	struct scatterlist *sg;  in au1xmmc_send_pio()  local
385 	data = host->mrq->data;  in au1xmmc_send_pio()
387 	if (!(host->flags & HOST_F_XMIT))  in au1xmmc_send_pio()
391 	sg = &data->sg[host->pio.index];  in au1xmmc_send_pio()
392 	sg_ptr = kmap_local_page(sg_page(sg)) + sg->offset + host->pio.offset;  in au1xmmc_send_pio()
395 	sg_len = data->sg[host->pio.index].length - host->pio.offset;  in au1xmmc_send_pio()
398 	max = (sg_len > host->pio.len) ? host->pio.len : sg_len;  in au1xmmc_send_pio()
415 	host->pio.len -= count;  in au1xmmc_send_pio()
416 	host->pio.offset += count;  in au1xmmc_send_pio()
419 		host->pio.index++;  in au1xmmc_send_pio()
420 		host->pio.offset = 0;  in au1xmmc_send_pio()
423 	if (host->pio.len == 0) {  in au1xmmc_send_pio()
426 		if (host->flags & HOST_F_STOP)  in au1xmmc_send_pio()
429 		queue_work(system_bh_wq, &host->data_bh_work);  in au1xmmc_send_pio()
439 	struct scatterlist *sg;  in au1xmmc_receive_pio()  local
441 	data = host->mrq->data;  in au1xmmc_receive_pio()
443 	if (!(host->flags & HOST_F_RECV))  in au1xmmc_receive_pio()
446 	max = host->pio.len;  in au1xmmc_receive_pio()
448 	if (host->pio.index < host->dma.len) {  in au1xmmc_receive_pio()
449 		sg = &data->sg[host->pio.index];  in au1xmmc_receive_pio()
450 		sg_ptr = kmap_local_page(sg_page(sg)) + sg->offset + host->pio.offset;  in au1xmmc_receive_pio()
453 		sg_len = sg_dma_len(&data->sg[host->pio.index]) - host->pio.offset;  in au1xmmc_receive_pio()
470 			DBG("RX CRC Error [%d + %d].\n", host->pdev->id,  in au1xmmc_receive_pio()
471 					host->pio.len, count);  in au1xmmc_receive_pio()
476 			DBG("RX Overrun [%d + %d]\n", host->pdev->id,  in au1xmmc_receive_pio()
477 					host->pio.len, count);  in au1xmmc_receive_pio()
481 			DBG("RX Underrun [%d + %d]\n", host->pdev->id,  in au1xmmc_receive_pio()
482 					host->pio.len,	count);  in au1xmmc_receive_pio()
494 	host->pio.len -= count;  in au1xmmc_receive_pio()
495 	host->pio.offset += count;  in au1xmmc_receive_pio()
498 		host->pio.index++;  in au1xmmc_receive_pio()
499 		host->pio.offset = 0;  in au1xmmc_receive_pio()
502 	if (host->pio.len == 0) {  in au1xmmc_receive_pio()
506 		if (host->flags & HOST_F_STOP)  in au1xmmc_receive_pio()
509 		queue_work(system_bh_wq, &host->data_bh_work);  in au1xmmc_receive_pio()
513 /* This is called when a command has been completed - grab the response
518 	struct mmc_request *mrq = host->mrq;  in au1xmmc_cmd_complete()
523 	if (!host->mrq)  in au1xmmc_cmd_complete()
526 	cmd = mrq->cmd;  in au1xmmc_cmd_complete()
527 	cmd->error = 0;  in au1xmmc_cmd_complete()
529 	if (cmd->flags & MMC_RSP_PRESENT) {  in au1xmmc_cmd_complete()
530 		if (cmd->flags & MMC_RSP_136) {  in au1xmmc_cmd_complete()
531 			r[0] = __raw_readl(host->iobase + SD_RESP3);  in au1xmmc_cmd_complete()
532 			r[1] = __raw_readl(host->iobase + SD_RESP2);  in au1xmmc_cmd_complete()
533 			r[2] = __raw_readl(host->iobase + SD_RESP1);  in au1xmmc_cmd_complete()
534 			r[3] = __raw_readl(host->iobase + SD_RESP0);  in au1xmmc_cmd_complete()
541 				cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8;  in au1xmmc_cmd_complete()
543 					cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24;  in au1xmmc_cmd_complete()
553 			cmd->resp[0] = __raw_readl(host->iobase + SD_RESP0);  in au1xmmc_cmd_complete()
559 		cmd->error = -EILSEQ;  in au1xmmc_cmd_complete()
561 	trans = host->flags & (HOST_F_XMIT | HOST_F_RECV);  in au1xmmc_cmd_complete()
563 	if (!trans || cmd->error) {  in au1xmmc_cmd_complete()
565 		queue_work(system_bh_wq, &host->finish_bh_work);  in au1xmmc_cmd_complete()
569 	host->status = HOST_S_DATA;  in au1xmmc_cmd_complete()
571 	if ((host->flags & (HOST_F_DMA | HOST_F_DBDMA))) {  in au1xmmc_cmd_complete()
576 		if (host->flags & HOST_F_RECV) {  in au1xmmc_cmd_complete()
589 	unsigned int pbus = clk_get_rate(host->clk);  in au1xmmc_set_clock()
590 	unsigned int divisor = ((pbus / rate) / 2) - 1;  in au1xmmc_set_clock()
605 	int datalen = data->blocks * data->blksz;  in au1xmmc_prepare_data()
607 	if (data->flags & MMC_DATA_READ)  in au1xmmc_prepare_data()
608 		host->flags |= HOST_F_RECV;  in au1xmmc_prepare_data()
610 		host->flags |= HOST_F_XMIT;  in au1xmmc_prepare_data()
612 	if (host->mrq->stop)  in au1xmmc_prepare_data()
613 		host->flags |= HOST_F_STOP;  in au1xmmc_prepare_data()
615 	host->dma.dir = DMA_BIDIRECTIONAL;  in au1xmmc_prepare_data()
617 	host->dma.len = dma_map_sg(mmc_dev(host->mmc), data->sg,  in au1xmmc_prepare_data()
618 				   data->sg_len, host->dma.dir);  in au1xmmc_prepare_data()
620 	if (host->dma.len == 0)  in au1xmmc_prepare_data()
621 		return -ETIMEDOUT;  in au1xmmc_prepare_data()
623 	__raw_writel(data->blksz - 1, HOST_BLKSIZE(host));  in au1xmmc_prepare_data()
625 	if (host->flags & (HOST_F_DMA | HOST_F_DBDMA)) {  in au1xmmc_prepare_data()
631 		for (i = 0; i < host->dma.len; i++) {  in au1xmmc_prepare_data()
633 			struct scatterlist *sg = &data->sg[i];  in au1xmmc_prepare_data()  local
634 			int sg_len = sg->length;  in au1xmmc_prepare_data()
638 			if (i == host->dma.len - 1)  in au1xmmc_prepare_data()
641 			if (host->flags & HOST_F_XMIT) {  in au1xmmc_prepare_data()
643 					sg_phys(sg), len, flags);  in au1xmmc_prepare_data()
646 					sg_phys(sg), len, flags);  in au1xmmc_prepare_data()
652 			datalen -= len;  in au1xmmc_prepare_data()
655 		host->pio.index = 0;  in au1xmmc_prepare_data()
656 		host->pio.offset = 0;  in au1xmmc_prepare_data()
657 		host->pio.len = datalen;  in au1xmmc_prepare_data()
659 		if (host->flags & HOST_F_XMIT)  in au1xmmc_prepare_data()
669 	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,  in au1xmmc_prepare_data()
670 			host->dma.dir);  in au1xmmc_prepare_data()
671 	return -ETIMEDOUT;  in au1xmmc_prepare_data()
681 	WARN_ON(host->status != HOST_S_IDLE);  in au1xmmc_request()
683 	host->mrq = mrq;  in au1xmmc_request()
684 	host->status = HOST_S_CMD;  in au1xmmc_request()
688 		mrq->cmd->error = -ENOMEDIUM;  in au1xmmc_request()
693 	if (mrq->data) {  in au1xmmc_request()
695 		ret = au1xmmc_prepare_data(host, mrq->data);  in au1xmmc_request()
699 		ret = au1xmmc_send_command(host, mrq->cmd, mrq->data);  in au1xmmc_request()
702 		mrq->cmd->error = ret;  in au1xmmc_request()
746 	if (ios->power_mode == MMC_POWER_OFF)  in au1xmmc_set_ios()
748 	else if (ios->power_mode == MMC_POWER_ON) {  in au1xmmc_set_ios()
752 	if (ios->clock && ios->clock != host->clock) {  in au1xmmc_set_ios()
753 		au1xmmc_set_clock(host, ios->clock);  in au1xmmc_set_ios()
754 		host->clock = ios->clock;  in au1xmmc_set_ios()
758 	switch (ios->bus_width) {  in au1xmmc_set_ios()
789 		mmc_signal_sdio_irq(host->mmc);  in au1xmmc_irq()
791 	if (host->mrq && (status & STATUS_TIMEOUT)) {  in au1xmmc_irq()
793 			host->mrq->cmd->error = -ETIMEDOUT;  in au1xmmc_irq()
795 			host->mrq->data->error = -ETIMEDOUT;  in au1xmmc_irq()
801 		queue_work(system_bh_wq, &host->finish_bh_work);  in au1xmmc_irq()
806 		if (!(host->flags & HOST_F_DMA) && (status & SD_STATUS_NE))  in au1xmmc_irq()
810 			/* queue_work(system_bh_wq, &host->data_bh_work); */  in au1xmmc_irq()
815 		if (host->status == HOST_S_CMD)  in au1xmmc_irq()
818 	} else if (!(host->flags & HOST_F_DMA)) {  in au1xmmc_irq()
819 		if ((host->flags & HOST_F_XMIT) && (status & STATUS_DATA_OUT))  in au1xmmc_irq()
821 		else if ((host->flags & HOST_F_RECV) && (status & STATUS_DATA_IN))  in au1xmmc_irq()
825 			DBG("Unhandled status %8.8x\n", host->pdev->id,  in au1xmmc_irq()
852 	if (!host->mrq)  in au1xmmc_dbdma_callback()
855 	if (host->flags & HOST_F_STOP)  in au1xmmc_dbdma_callback()
858 	queue_work(system_bh_wq, &host->data_bh_work);  in au1xmmc_dbdma_callback()
866 	res = platform_get_resource(host->pdev, IORESOURCE_DMA, 0);  in au1xmmc_dbdma_init()
868 		return -ENODEV;  in au1xmmc_dbdma_init()
869 	txid = res->start;  in au1xmmc_dbdma_init()
871 	res = platform_get_resource(host->pdev, IORESOURCE_DMA, 1);  in au1xmmc_dbdma_init()
873 		return -ENODEV;  in au1xmmc_dbdma_init()
874 	rxid = res->start;  in au1xmmc_dbdma_init()
877 		return -ENODEV;  in au1xmmc_dbdma_init()
879 	host->tx_chan = au1xxx_dbdma_chan_alloc(memid, txid,  in au1xmmc_dbdma_init()
881 	if (!host->tx_chan) {  in au1xmmc_dbdma_init()
882 		dev_err(&host->pdev->dev, "cannot allocate TX DMA\n");  in au1xmmc_dbdma_init()
883 		return -ENODEV;  in au1xmmc_dbdma_init()
886 	host->rx_chan = au1xxx_dbdma_chan_alloc(rxid, memid,  in au1xmmc_dbdma_init()
888 	if (!host->rx_chan) {  in au1xmmc_dbdma_init()
889 		dev_err(&host->pdev->dev, "cannot allocate RX DMA\n");  in au1xmmc_dbdma_init()
890 		au1xxx_dbdma_chan_free(host->tx_chan);  in au1xmmc_dbdma_init()
891 		return -ENODEV;  in au1xmmc_dbdma_init()
894 	au1xxx_dbdma_set_devwidth(host->tx_chan, 8);  in au1xmmc_dbdma_init()
895 	au1xxx_dbdma_set_devwidth(host->rx_chan, 8);  in au1xmmc_dbdma_init()
897 	au1xxx_dbdma_ring_alloc(host->tx_chan, AU1XMMC_DESCRIPTOR_COUNT);  in au1xmmc_dbdma_init()
898 	au1xxx_dbdma_ring_alloc(host->rx_chan, AU1XMMC_DESCRIPTOR_COUNT);  in au1xmmc_dbdma_init()
901 	host->flags |= HOST_F_DMA | HOST_F_DBDMA;  in au1xmmc_dbdma_init()
908 	if (host->flags & HOST_F_DMA) {  in au1xmmc_dbdma_shutdown()
909 		host->flags &= ~HOST_F_DMA;  in au1xmmc_dbdma_shutdown()
910 		au1xxx_dbdma_chan_free(host->tx_chan);  in au1xmmc_dbdma_shutdown()
911 		au1xxx_dbdma_chan_free(host->rx_chan);  in au1xmmc_dbdma_shutdown()
940 	mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);  in au1xmmc_probe()
942 		dev_err(&pdev->dev, "no memory for mmc_host\n");  in au1xmmc_probe()
943 		ret = -ENOMEM;  in au1xmmc_probe()
948 	host->mmc = mmc;  in au1xmmc_probe()
949 	host->platdata = pdev->dev.platform_data;  in au1xmmc_probe()
950 	host->pdev = pdev;  in au1xmmc_probe()
952 	ret = -ENODEV;  in au1xmmc_probe()
955 		dev_err(&pdev->dev, "no mmio defined\n");  in au1xmmc_probe()
959 	host->ioarea = request_mem_region(r->start, resource_size(r),  in au1xmmc_probe()
960 					   pdev->name);  in au1xmmc_probe()
961 	if (!host->ioarea) {  in au1xmmc_probe()
962 		dev_err(&pdev->dev, "mmio already in use\n");  in au1xmmc_probe()
966 	host->iobase = ioremap(r->start, 0x3c);  in au1xmmc_probe()
967 	if (!host->iobase) {  in au1xmmc_probe()
968 		dev_err(&pdev->dev, "cannot remap mmio\n");  in au1xmmc_probe()
972 	host->irq = platform_get_irq(pdev, 0);  in au1xmmc_probe()
973 	if (host->irq < 0) {  in au1xmmc_probe()
974 		ret = host->irq;  in au1xmmc_probe()
978 	mmc->ops = &au1xmmc_ops;  in au1xmmc_probe()
980 	mmc->f_min =   450000;  in au1xmmc_probe()
981 	mmc->f_max = 24000000;  in au1xmmc_probe()
983 	mmc->max_blk_size = 2048;  in au1xmmc_probe()
984 	mmc->max_blk_count = 512;  in au1xmmc_probe()
986 	mmc->ocr_avail = AU1XMMC_OCR;  in au1xmmc_probe()
987 	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;  in au1xmmc_probe()
988 	mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT;  in au1xmmc_probe()
994 		mmc->max_seg_size = AU1100_MMC_DESCRIPTOR_SIZE;  in au1xmmc_probe()
997 		mmc->max_seg_size = AU1200_MMC_DESCRIPTOR_SIZE;  in au1xmmc_probe()
1001 		mmc->max_seg_size = AU1200_MMC_DESCRIPTOR_SIZE;  in au1xmmc_probe()
1002 		mmc->f_max = 52000000;  in au1xmmc_probe()
1003 		if (host->ioarea->start == AU1100_SD0_PHYS_ADDR)  in au1xmmc_probe()
1004 			mmc->caps |= MMC_CAP_8_BIT_DATA;  in au1xmmc_probe()
1008 	ret = request_irq(host->irq, au1xmmc_irq, iflag, DRIVER_NAME, host);  in au1xmmc_probe()
1010 		dev_err(&pdev->dev, "cannot grab IRQ\n");  in au1xmmc_probe()
1014 	host->clk = clk_get(&pdev->dev, ALCHEMY_PERIPH_CLK);  in au1xmmc_probe()
1015 	if (IS_ERR(host->clk)) {  in au1xmmc_probe()
1016 		dev_err(&pdev->dev, "cannot find clock\n");  in au1xmmc_probe()
1017 		ret = PTR_ERR(host->clk);  in au1xmmc_probe()
1021 	ret = clk_prepare_enable(host->clk);  in au1xmmc_probe()
1023 		dev_err(&pdev->dev, "cannot enable clock\n");  in au1xmmc_probe()
1027 	host->status = HOST_S_IDLE;  in au1xmmc_probe()
1029 	/* board-specific carddetect setup, if any */  in au1xmmc_probe()
1030 	if (host->platdata && host->platdata->cd_setup) {  in au1xmmc_probe()
1031 		ret = host->platdata->cd_setup(mmc, 1);  in au1xmmc_probe()
1033 			dev_warn(&pdev->dev, "board CD setup failed\n");  in au1xmmc_probe()
1034 			mmc->caps |= MMC_CAP_NEEDS_POLL;  in au1xmmc_probe()
1037 		mmc->caps |= MMC_CAP_NEEDS_POLL;  in au1xmmc_probe()
1040 	if (host->platdata)  in au1xmmc_probe()
1041 		mmc->caps &= ~(host->platdata->mask_host_caps);  in au1xmmc_probe()
1043 	INIT_WORK(&host->data_bh_work, au1xmmc_data_bh_work);  in au1xmmc_probe()
1045 	INIT_WORK(&host->finish_bh_work, au1xmmc_finish_bh_work);  in au1xmmc_probe()
1054 	if (host->platdata && host->platdata->led) {  in au1xmmc_probe()
1055 		struct led_classdev *led = host->platdata->led;  in au1xmmc_probe()
1056 		led->name = mmc_hostname(mmc);  in au1xmmc_probe()
1057 		led->brightness = LED_OFF;  in au1xmmc_probe()
1058 		led->default_trigger = mmc_hostname(mmc);  in au1xmmc_probe()
1069 		dev_err(&pdev->dev, "cannot add mmc host\n");  in au1xmmc_probe()
1076 		" (mode=%s)\n", pdev->id, host->iobase,  in au1xmmc_probe()
1077 		host->flags & HOST_F_DMA ? "dma" : "pio");  in au1xmmc_probe()
1083 	if (host->platdata && host->platdata->led)  in au1xmmc_probe()
1084 		led_classdev_unregister(host->platdata->led);  in au1xmmc_probe()
1092 	if (host->flags & HOST_F_DBDMA)  in au1xmmc_probe()
1095 	cancel_work_sync(&host->data_bh_work);  in au1xmmc_probe()
1096 	cancel_work_sync(&host->finish_bh_work);  in au1xmmc_probe()
1098 	if (host->platdata && host->platdata->cd_setup &&  in au1xmmc_probe()
1099 	    !(mmc->caps & MMC_CAP_NEEDS_POLL))  in au1xmmc_probe()
1100 		host->platdata->cd_setup(mmc, 0);  in au1xmmc_probe()
1102 	clk_disable_unprepare(host->clk);  in au1xmmc_probe()
1104 	clk_put(host->clk);  in au1xmmc_probe()
1106 	free_irq(host->irq, host);  in au1xmmc_probe()
1108 	iounmap((void *)host->iobase);  in au1xmmc_probe()
1110 	release_resource(host->ioarea);  in au1xmmc_probe()
1111 	kfree(host->ioarea);  in au1xmmc_probe()
1123 		mmc_remove_host(host->mmc);  in au1xmmc_remove()
1126 		if (host->platdata && host->platdata->led)  in au1xmmc_remove()
1127 			led_classdev_unregister(host->platdata->led);  in au1xmmc_remove()
1130 		if (host->platdata && host->platdata->cd_setup &&  in au1xmmc_remove()
1131 		    !(host->mmc->caps & MMC_CAP_NEEDS_POLL))  in au1xmmc_remove()
1132 			host->platdata->cd_setup(host->mmc, 0);  in au1xmmc_remove()
1139 		cancel_work_sync(&host->data_bh_work);  in au1xmmc_remove()
1140 		cancel_work_sync(&host->finish_bh_work);  in au1xmmc_remove()
1142 		if (host->flags & HOST_F_DBDMA)  in au1xmmc_remove()
1147 		clk_disable_unprepare(host->clk);  in au1xmmc_remove()
1148 		clk_put(host->clk);  in au1xmmc_remove()
1150 		free_irq(host->irq, host);  in au1xmmc_remove()
1151 		iounmap((void *)host->iobase);  in au1xmmc_remove()
1152 		release_resource(host->ioarea);  in au1xmmc_remove()
1153 		kfree(host->ioarea);  in au1xmmc_remove()
1155 		mmc_free_host(host->mmc);  in au1xmmc_remove()
1222 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1225 MODULE_ALIAS("platform:au1xxx-mmc");