2 * linux/drivers/mmc/host/pxa.c - PXA MMCI driver
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * This hardware is really sick:
11 * - No way to clear interrupts.
12 * - Have to turn off the clock whenever we touch the device.
13 * - Doesn't tell you how many data blocks were transferred.
16 * 1 and 3 byte data transfers not supported
17 * max block length up to 1023
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/ioport.h>
22 #include <linux/platform_device.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/clk.h>
27 #include <linux/err.h>
28 #include <linux/mmc/host.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/gpio.h>
32 #include <linux/gfp.h>
34 #include <linux/of_gpio.h>
35 #include <linux/of_device.h>
37 #include <asm/sizes.h>
39 #include <mach/hardware.h>
41 #include <linux/platform_data/mmc-pxamci.h>
45 #define DRIVER_NAME "pxa2xx-mci"
48 #define CLKRT_OFF (~0)
50 #define mmc_has_26MHz() (cpu_is_pxa300() || cpu_is_pxa310() \
59 unsigned long clkrate;
65 unsigned int power_mode;
66 struct pxamci_platform_data *pdata;
68 struct mmc_request *mrq;
69 struct mmc_command *cmd;
70 struct mmc_data *data;
73 struct pxa_dma_desc *sg_cpu;
77 unsigned int dma_drcmrrx;
78 unsigned int dma_drcmrtx;
80 struct regulator *vcc;
83 static inline void pxamci_init_ocr(struct pxamci_host *host)
85 #ifdef CONFIG_REGULATOR
86 host->vcc = regulator_get(mmc_dev(host->mmc), "vmmc");
88 if (IS_ERR(host->vcc))
91 host->mmc->ocr_avail = mmc_regulator_get_ocrmask(host->vcc);
92 if (host->pdata && host->pdata->ocr_mask)
93 dev_warn(mmc_dev(host->mmc),
94 "ocr_mask/setpower will not be used\n");
97 if (host->vcc == NULL) {
98 /* fall-back to platform data */
99 host->mmc->ocr_avail = host->pdata ?
100 host->pdata->ocr_mask :
101 MMC_VDD_32_33 | MMC_VDD_33_34;
105 static inline int pxamci_set_power(struct pxamci_host *host,
106 unsigned char power_mode,
114 if (power_mode == MMC_POWER_UP) {
115 ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
118 } else if (power_mode == MMC_POWER_OFF) {
119 ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0);
124 if (!host->vcc && host->pdata &&
125 gpio_is_valid(host->pdata->gpio_power)) {
126 on = ((1 << vdd) & host->pdata->ocr_mask);
127 gpio_set_value(host->pdata->gpio_power,
128 !!on ^ host->pdata->gpio_power_invert);
130 if (!host->vcc && host->pdata && host->pdata->setpower)
131 return host->pdata->setpower(mmc_dev(host->mmc), vdd);
136 static void pxamci_stop_clock(struct pxamci_host *host)
138 if (readl(host->base + MMC_STAT) & STAT_CLK_EN) {
139 unsigned long timeout = 10000;
142 writel(STOP_CLOCK, host->base + MMC_STRPCL);
145 v = readl(host->base + MMC_STAT);
146 if (!(v & STAT_CLK_EN))
152 dev_err(mmc_dev(host->mmc), "unable to stop clock\n");
156 static void pxamci_enable_irq(struct pxamci_host *host, unsigned int mask)
160 spin_lock_irqsave(&host->lock, flags);
161 host->imask &= ~mask;
162 writel(host->imask, host->base + MMC_I_MASK);
163 spin_unlock_irqrestore(&host->lock, flags);
166 static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask)
170 spin_lock_irqsave(&host->lock, flags);
172 writel(host->imask, host->base + MMC_I_MASK);
173 spin_unlock_irqrestore(&host->lock, flags);
176 static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
178 unsigned int nob = data->blocks;
179 unsigned long long clks;
180 unsigned int timeout;
187 if (data->flags & MMC_DATA_STREAM)
190 writel(nob, host->base + MMC_NOB);
191 writel(data->blksz, host->base + MMC_BLKLEN);
193 clks = (unsigned long long)data->timeout_ns * host->clkrate;
194 do_div(clks, 1000000000UL);
195 timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt);
196 writel((timeout + 255) / 256, host->base + MMC_RDTO);
198 if (data->flags & MMC_DATA_READ) {
199 host->dma_dir = DMA_FROM_DEVICE;
200 dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC;
201 DRCMR(host->dma_drcmrtx) = 0;
202 DRCMR(host->dma_drcmrrx) = host->dma | DRCMR_MAPVLD;
204 host->dma_dir = DMA_TO_DEVICE;
205 dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG;
206 DRCMR(host->dma_drcmrrx) = 0;
207 DRCMR(host->dma_drcmrtx) = host->dma | DRCMR_MAPVLD;
210 dcmd |= DCMD_BURST32 | DCMD_WIDTH1;
212 host->dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
215 for (i = 0; i < host->dma_len; i++) {
216 unsigned int length = sg_dma_len(&data->sg[i]);
217 host->sg_cpu[i].dcmd = dcmd | length;
218 if (length & 31 && !(data->flags & MMC_DATA_READ))
219 host->sg_cpu[i].dcmd |= DCMD_ENDIRQEN;
220 /* Not aligned to 8-byte boundary? */
221 if (sg_dma_address(&data->sg[i]) & 0x7)
223 if (data->flags & MMC_DATA_READ) {
224 host->sg_cpu[i].dsadr = host->res->start + MMC_RXFIFO;
225 host->sg_cpu[i].dtadr = sg_dma_address(&data->sg[i]);
227 host->sg_cpu[i].dsadr = sg_dma_address(&data->sg[i]);
228 host->sg_cpu[i].dtadr = host->res->start + MMC_TXFIFO;
230 host->sg_cpu[i].ddadr = host->sg_dma + (i + 1) *
231 sizeof(struct pxa_dma_desc);
233 host->sg_cpu[host->dma_len - 1].ddadr = DDADR_STOP;
237 * The PXA27x DMA controller encounters overhead when working with
238 * unaligned (to 8-byte boundaries) data, so switch on byte alignment
239 * mode only if we have unaligned data.
242 DALGN |= (1 << host->dma);
244 DALGN &= ~(1 << host->dma);
245 DDADR(host->dma) = host->sg_dma;
248 * workaround for erratum #91:
249 * only start DMA now if we are doing a read,
250 * otherwise we wait until CMD/RESP has finished
251 * before starting DMA.
253 if (!cpu_is_pxa27x() || data->flags & MMC_DATA_READ)
254 DCSR(host->dma) = DCSR_RUN;
257 static void pxamci_start_cmd(struct pxamci_host *host, struct mmc_command *cmd, unsigned int cmdat)
259 WARN_ON(host->cmd != NULL);
262 if (cmd->flags & MMC_RSP_BUSY)
265 #define RSP_TYPE(x) ((x) & ~(MMC_RSP_BUSY|MMC_RSP_OPCODE))
266 switch (RSP_TYPE(mmc_resp_type(cmd))) {
267 case RSP_TYPE(MMC_RSP_R1): /* r1, r1b, r6, r7 */
268 cmdat |= CMDAT_RESP_SHORT;
270 case RSP_TYPE(MMC_RSP_R3):
271 cmdat |= CMDAT_RESP_R3;
273 case RSP_TYPE(MMC_RSP_R2):
274 cmdat |= CMDAT_RESP_R2;
280 writel(cmd->opcode, host->base + MMC_CMD);
281 writel(cmd->arg >> 16, host->base + MMC_ARGH);
282 writel(cmd->arg & 0xffff, host->base + MMC_ARGL);
283 writel(cmdat, host->base + MMC_CMDAT);
284 writel(host->clkrt, host->base + MMC_CLKRT);
286 writel(START_CLOCK, host->base + MMC_STRPCL);
288 pxamci_enable_irq(host, END_CMD_RES);
291 static void pxamci_finish_request(struct pxamci_host *host, struct mmc_request *mrq)
296 mmc_request_done(host->mmc, mrq);
299 static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat)
301 struct mmc_command *cmd = host->cmd;
311 * Did I mention this is Sick. We always need to
312 * discard the upper 8 bits of the first 16-bit word.
314 v = readl(host->base + MMC_RES) & 0xffff;
315 for (i = 0; i < 4; i++) {
316 u32 w1 = readl(host->base + MMC_RES) & 0xffff;
317 u32 w2 = readl(host->base + MMC_RES) & 0xffff;
318 cmd->resp[i] = v << 24 | w1 << 8 | w2 >> 8;
322 if (stat & STAT_TIME_OUT_RESPONSE) {
323 cmd->error = -ETIMEDOUT;
324 } else if (stat & STAT_RES_CRC_ERR && cmd->flags & MMC_RSP_CRC) {
326 * workaround for erratum #42:
327 * Intel PXA27x Family Processor Specification Update Rev 001
328 * A bogus CRC error can appear if the msb of a 136 bit
331 if (cpu_is_pxa27x() &&
332 (cmd->flags & MMC_RSP_136 && cmd->resp[0] & 0x80000000))
333 pr_debug("ignoring CRC from command %d - *risky*\n", cmd->opcode);
335 cmd->error = -EILSEQ;
338 pxamci_disable_irq(host, END_CMD_RES);
339 if (host->data && !cmd->error) {
340 pxamci_enable_irq(host, DATA_TRAN_DONE);
342 * workaround for erratum #91, if doing write
345 if (cpu_is_pxa27x() && host->data->flags & MMC_DATA_WRITE)
346 DCSR(host->dma) = DCSR_RUN;
348 pxamci_finish_request(host, host->mrq);
354 static int pxamci_data_done(struct pxamci_host *host, unsigned int stat)
356 struct mmc_data *data = host->data;
362 dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
365 if (stat & STAT_READ_TIME_OUT)
366 data->error = -ETIMEDOUT;
367 else if (stat & (STAT_CRC_READ_ERROR|STAT_CRC_WRITE_ERROR))
368 data->error = -EILSEQ;
371 * There appears to be a hardware design bug here. There seems to
372 * be no way to find out how much data was transferred to the card.
373 * This means that if there was an error on any block, we mark all
374 * data blocks as being in error.
377 data->bytes_xfered = data->blocks * data->blksz;
379 data->bytes_xfered = 0;
381 pxamci_disable_irq(host, DATA_TRAN_DONE);
384 if (host->mrq->stop) {
385 pxamci_stop_clock(host);
386 pxamci_start_cmd(host, host->mrq->stop, host->cmdat);
388 pxamci_finish_request(host, host->mrq);
394 static irqreturn_t pxamci_irq(int irq, void *devid)
396 struct pxamci_host *host = devid;
400 ireg = readl(host->base + MMC_I_REG) & ~readl(host->base + MMC_I_MASK);
403 unsigned stat = readl(host->base + MMC_STAT);
405 pr_debug("PXAMCI: irq %08x stat %08x\n", ireg, stat);
407 if (ireg & END_CMD_RES)
408 handled |= pxamci_cmd_done(host, stat);
409 if (ireg & DATA_TRAN_DONE)
410 handled |= pxamci_data_done(host, stat);
411 if (ireg & SDIO_INT) {
412 mmc_signal_sdio_irq(host->mmc);
417 return IRQ_RETVAL(handled);
420 static void pxamci_request(struct mmc_host *mmc, struct mmc_request *mrq)
422 struct pxamci_host *host = mmc_priv(mmc);
425 WARN_ON(host->mrq != NULL);
429 pxamci_stop_clock(host);
432 host->cmdat &= ~CMDAT_INIT;
435 pxamci_setup_data(host, mrq->data);
437 cmdat &= ~CMDAT_BUSY;
438 cmdat |= CMDAT_DATAEN | CMDAT_DMAEN;
439 if (mrq->data->flags & MMC_DATA_WRITE)
440 cmdat |= CMDAT_WRITE;
442 if (mrq->data->flags & MMC_DATA_STREAM)
443 cmdat |= CMDAT_STREAM;
446 pxamci_start_cmd(host, mrq->cmd, cmdat);
449 static int pxamci_get_ro(struct mmc_host *mmc)
451 struct pxamci_host *host = mmc_priv(mmc);
453 if (host->pdata && gpio_is_valid(host->pdata->gpio_card_ro)) {
454 if (host->pdata->gpio_card_ro_invert)
455 return !gpio_get_value(host->pdata->gpio_card_ro);
457 return gpio_get_value(host->pdata->gpio_card_ro);
459 if (host->pdata && host->pdata->get_ro)
460 return !!host->pdata->get_ro(mmc_dev(mmc));
462 * Board doesn't support read only detection; let the mmc core
468 static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
470 struct pxamci_host *host = mmc_priv(mmc);
473 unsigned long rate = host->clkrate;
474 unsigned int clk = rate / ios->clock;
476 if (host->clkrt == CLKRT_OFF)
477 clk_enable(host->clk);
479 if (ios->clock == 26000000) {
480 /* to support 26MHz */
483 /* to handle (19.5MHz, 26MHz) */
488 * clk might result in a lower divisor than we
489 * desire. check for that condition and adjust
492 if (rate / clk > ios->clock)
494 host->clkrt = fls(clk) - 1;
498 * we write clkrt on the next command
501 pxamci_stop_clock(host);
502 if (host->clkrt != CLKRT_OFF) {
503 host->clkrt = CLKRT_OFF;
504 clk_disable(host->clk);
508 if (host->power_mode != ios->power_mode) {
511 host->power_mode = ios->power_mode;
513 ret = pxamci_set_power(host, ios->power_mode, ios->vdd);
515 dev_err(mmc_dev(mmc), "unable to set power\n");
517 * The .set_ios() function in the mmc_host_ops
518 * struct return void, and failing to set the
519 * power should be rare so we print an error and
525 if (ios->power_mode == MMC_POWER_ON)
526 host->cmdat |= CMDAT_INIT;
529 if (ios->bus_width == MMC_BUS_WIDTH_4)
530 host->cmdat |= CMDAT_SD_4DAT;
532 host->cmdat &= ~CMDAT_SD_4DAT;
534 dev_dbg(mmc_dev(mmc), "PXAMCI: clkrt = %x cmdat = %x\n",
535 host->clkrt, host->cmdat);
538 static void pxamci_enable_sdio_irq(struct mmc_host *host, int enable)
540 struct pxamci_host *pxa_host = mmc_priv(host);
543 pxamci_enable_irq(pxa_host, SDIO_INT);
545 pxamci_disable_irq(pxa_host, SDIO_INT);
548 static const struct mmc_host_ops pxamci_ops = {
549 .request = pxamci_request,
550 .get_ro = pxamci_get_ro,
551 .set_ios = pxamci_set_ios,
552 .enable_sdio_irq = pxamci_enable_sdio_irq,
555 static void pxamci_dma_irq(int dma, void *devid)
557 struct pxamci_host *host = devid;
558 int dcsr = DCSR(dma);
559 DCSR(dma) = dcsr & ~DCSR_STOPIRQEN;
561 if (dcsr & DCSR_ENDINTR) {
562 writel(BUF_PART_FULL, host->base + MMC_PRTBUF);
564 pr_err("%s: DMA error on channel %d (DCSR=%#x)\n",
565 mmc_hostname(host->mmc), dma, dcsr);
566 host->data->error = -EIO;
567 pxamci_data_done(host, 0);
571 static irqreturn_t pxamci_detect_irq(int irq, void *devid)
573 struct pxamci_host *host = mmc_priv(devid);
575 mmc_detect_change(devid, msecs_to_jiffies(host->pdata->detect_delay_ms));
580 static const struct of_device_id pxa_mmc_dt_ids[] = {
581 { .compatible = "marvell,pxa-mmc" },
585 MODULE_DEVICE_TABLE(of, pxa_mmc_dt_ids);
587 static int pxamci_of_init(struct platform_device *pdev)
589 struct device_node *np = pdev->dev.of_node;
590 struct pxamci_platform_data *pdata;
596 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
600 pdata->gpio_card_detect =
601 of_get_named_gpio(np, "cd-gpios", 0);
602 pdata->gpio_card_ro =
603 of_get_named_gpio(np, "wp-gpios", 0);
605 /* pxa-mmc specific */
607 of_get_named_gpio(np, "pxa-mmc,gpio-power", 0);
609 if (of_property_read_u32(np, "pxa-mmc,detect-delay-ms", &tmp) == 0)
610 pdata->detect_delay_ms = tmp;
612 pdev->dev.platform_data = pdata;
617 static int pxamci_of_init(struct platform_device *pdev)
623 static int pxamci_probe(struct platform_device *pdev)
625 struct mmc_host *mmc;
626 struct pxamci_host *host = NULL;
627 struct resource *r, *dmarx, *dmatx;
628 int ret, irq, gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
630 ret = pxamci_of_init(pdev);
634 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
635 irq = platform_get_irq(pdev, 0);
639 r = request_mem_region(r->start, SZ_4K, DRIVER_NAME);
643 mmc = mmc_alloc_host(sizeof(struct pxamci_host), &pdev->dev);
649 mmc->ops = &pxamci_ops;
652 * We can do SG-DMA, but we don't because we never know how much
653 * data we successfully wrote to the card.
655 mmc->max_segs = NR_SG;
658 * Our hardware DMA can handle a maximum of one page per SG entry.
660 mmc->max_seg_size = PAGE_SIZE;
663 * Block length register is only 10 bits before PXA27x.
665 mmc->max_blk_size = cpu_is_pxa25x() ? 1023 : 2048;
668 * Block count register is 16 bits.
670 mmc->max_blk_count = 65535;
672 host = mmc_priv(mmc);
675 host->pdata = pdev->dev.platform_data;
676 host->clkrt = CLKRT_OFF;
678 host->clk = clk_get(&pdev->dev, NULL);
679 if (IS_ERR(host->clk)) {
680 ret = PTR_ERR(host->clk);
685 host->clkrate = clk_get_rate(host->clk);
688 * Calculate minimum clock rate, rounding up.
690 mmc->f_min = (host->clkrate + 63) / 64;
691 mmc->f_max = (mmc_has_26MHz()) ? 26000000 : host->clkrate;
693 pxamci_init_ocr(host);
697 if (!cpu_is_pxa25x()) {
698 mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
699 host->cmdat |= CMDAT_SDIO_INT_EN;
701 mmc->caps |= MMC_CAP_MMC_HIGHSPEED |
702 MMC_CAP_SD_HIGHSPEED;
705 host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
711 spin_lock_init(&host->lock);
714 host->imask = MMC_I_MASK_ALL;
716 host->base = ioremap(r->start, SZ_4K);
723 * Ensure that the host controller is shut down, and setup
726 pxamci_stop_clock(host);
727 writel(0, host->base + MMC_SPI);
728 writel(64, host->base + MMC_RESTO);
729 writel(host->imask, host->base + MMC_I_MASK);
731 host->dma = pxa_request_dma(DRIVER_NAME, DMA_PRIO_LOW,
732 pxamci_dma_irq, host);
738 ret = request_irq(host->irq, pxamci_irq, 0, DRIVER_NAME, host);
742 platform_set_drvdata(pdev, mmc);
744 dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0);
749 host->dma_drcmrrx = dmarx->start;
751 dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1);
756 host->dma_drcmrtx = dmatx->start;
759 gpio_cd = host->pdata->gpio_card_detect;
760 gpio_ro = host->pdata->gpio_card_ro;
761 gpio_power = host->pdata->gpio_power;
763 if (gpio_is_valid(gpio_power)) {
764 ret = gpio_request(gpio_power, "mmc card power");
766 dev_err(&pdev->dev, "Failed requesting gpio_power %d\n", gpio_power);
769 gpio_direction_output(gpio_power,
770 host->pdata->gpio_power_invert);
772 if (gpio_is_valid(gpio_ro)) {
773 ret = gpio_request(gpio_ro, "mmc card read only");
775 dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n", gpio_ro);
778 gpio_direction_input(gpio_ro);
780 if (gpio_is_valid(gpio_cd)) {
781 ret = gpio_request(gpio_cd, "mmc card detect");
783 dev_err(&pdev->dev, "Failed requesting gpio_cd %d\n", gpio_cd);
786 gpio_direction_input(gpio_cd);
788 ret = request_irq(gpio_to_irq(gpio_cd), pxamci_detect_irq,
789 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
790 "mmc card detect", mmc);
792 dev_err(&pdev->dev, "failed to request card detect IRQ\n");
793 goto err_request_irq;
797 if (host->pdata && host->pdata->init)
798 host->pdata->init(&pdev->dev, pxamci_detect_irq, mmc);
800 if (gpio_is_valid(gpio_power) && host->pdata->setpower)
801 dev_warn(&pdev->dev, "gpio_power and setpower() both defined\n");
802 if (gpio_is_valid(gpio_ro) && host->pdata->get_ro)
803 dev_warn(&pdev->dev, "gpio_ro and get_ro() both defined\n");
814 gpio_free(gpio_power);
818 pxa_free_dma(host->dma);
822 dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
832 static int pxamci_remove(struct platform_device *pdev)
834 struct mmc_host *mmc = platform_get_drvdata(pdev);
835 int gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
838 struct pxamci_host *host = mmc_priv(mmc);
840 mmc_remove_host(mmc);
843 gpio_cd = host->pdata->gpio_card_detect;
844 gpio_ro = host->pdata->gpio_card_ro;
845 gpio_power = host->pdata->gpio_power;
847 if (gpio_is_valid(gpio_cd)) {
848 free_irq(gpio_to_irq(gpio_cd), mmc);
851 if (gpio_is_valid(gpio_ro))
853 if (gpio_is_valid(gpio_power))
854 gpio_free(gpio_power);
856 regulator_put(host->vcc);
858 if (host->pdata && host->pdata->exit)
859 host->pdata->exit(&pdev->dev, mmc);
861 pxamci_stop_clock(host);
862 writel(TXFIFO_WR_REQ|RXFIFO_RD_REQ|CLK_IS_OFF|STOP_CMD|
863 END_CMD_RES|PRG_DONE|DATA_TRAN_DONE,
864 host->base + MMC_I_MASK);
866 DRCMR(host->dma_drcmrrx) = 0;
867 DRCMR(host->dma_drcmrtx) = 0;
869 free_irq(host->irq, host);
870 pxa_free_dma(host->dma);
872 dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
876 release_resource(host->res);
884 static int pxamci_suspend(struct device *dev)
886 struct mmc_host *mmc = dev_get_drvdata(dev);
890 ret = mmc_suspend_host(mmc);
895 static int pxamci_resume(struct device *dev)
897 struct mmc_host *mmc = dev_get_drvdata(dev);
901 ret = mmc_resume_host(mmc);
906 static const struct dev_pm_ops pxamci_pm_ops = {
907 .suspend = pxamci_suspend,
908 .resume = pxamci_resume,
912 static struct platform_driver pxamci_driver = {
913 .probe = pxamci_probe,
914 .remove = pxamci_remove,
917 .owner = THIS_MODULE,
918 .of_match_table = of_match_ptr(pxa_mmc_dt_ids),
920 .pm = &pxamci_pm_ops,
925 module_platform_driver(pxamci_driver);
927 MODULE_DESCRIPTION("PXA Multimedia Card Interface Driver");
928 MODULE_LICENSE("GPL");
929 MODULE_ALIAS("platform:pxa2xx-mci");