1 files changed, 626 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
new file mode 100644
index 00000000000..bbaeb2d5c93
--- /dev/null
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
@@ -0,0 +1,626 @@
+/*
+ * Copyright (c) 2010 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/card.h>
+#include <linux/suspend.h>
+#include <linux/errno.h>
+#include <linux/sched.h>	/* request_irq() */
+#include <linux/module.h>
+#include <net/cfg80211.h>
+
+#include <defs.h>
+#include <brcm_hw_ids.h>
+#include <brcmu_utils.h>
+#include <brcmu_wifi.h>
+#include "sdio_host.h"
+#include "dhd.h"
+#include "dhd_dbg.h"
+#include "wl_cfg80211.h"
+
+#define SDIO_VENDOR_ID_BROADCOM		0x02d0
+
+#define DMA_ALIGN_MASK	0x03
+
+#define SDIO_DEVICE_ID_BROADCOM_4329	0x4329
+
+#define SDIO_FUNC1_BLOCKSIZE		64
+#define SDIO_FUNC2_BLOCKSIZE		512
+
+/* devices we support, null terminated */
+static const struct sdio_device_id brcmf_sdmmc_ids[] = {
+	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
+	{ /* end: all zeroes */ },
+};
+MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
+
+static bool
+brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
+{
+	bool is_err = false;
+#ifdef CONFIG_PM_SLEEP
+	is_err = atomic_read(&sdiodev->suspend);
+#endif
+	return is_err;
+}
+
+static void
+brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
+{
+#ifdef CONFIG_PM_SLEEP
+	int retry = 0;
+	while (atomic_read(&sdiodev->suspend) && retry++ != 30)
+		wait_event_timeout(*wq, false, HZ/100);
+#endif
+}
+
+static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
+					    uint regaddr, u8 *byte)
+{
+	struct sdio_func *sdfunc = sdiodev->func[0];
+	int err_ret;
+
+	/*
+	 * Can only directly write to some F0 registers.
+	 * Handle F2 enable/disable and Abort command
+	 * as a special case.
+	 */
+	if (regaddr == SDIO_CCCR_IOEx) {
+		sdfunc = sdiodev->func[2];
+		if (sdfunc) {
+			sdio_claim_host(sdfunc);
+			if (*byte & SDIO_FUNC_ENABLE_2) {
+				/* Enable Function 2 */
+				err_ret = sdio_enable_func(sdfunc);
+				if (err_ret)
+					brcmf_dbg(ERROR,
+						  "enable F2 failed:%d\n",
+						  err_ret);
+			} else {
+				/* Disable Function 2 */
+				err_ret = sdio_disable_func(sdfunc);
+				if (err_ret)
+					brcmf_dbg(ERROR,
+						  "Disable F2 failed:%d\n",
+						  err_ret);
+			}
+			sdio_release_host(sdfunc);
+		}
+	} else if (regaddr == SDIO_CCCR_ABORT) {
+		sdio_claim_host(sdfunc);
+		sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
+		sdio_release_host(sdfunc);
+	} else if (regaddr < 0xF0) {
+		brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
+		err_ret = -EPERM;
+	} else {
+		sdio_claim_host(sdfunc);
+		sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
+		sdio_release_host(sdfunc);
+	}
+
+	return err_ret;
+}
+
+int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
+			     uint regaddr, u8 *byte)
+{
+	int err_ret;
+
+	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
+
+	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
+	if (brcmf_pm_resume_error(sdiodev))
+		return -EIO;
+
+	if (rw && func == 0) {
+		/* handle F0 separately */
+		err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
+	} else {
+		sdio_claim_host(sdiodev->func[func]);
+		if (rw) /* CMD52 Write */
+			sdio_writeb(sdiodev->func[func], *byte, regaddr,
+				    &err_ret);
+		else if (func == 0) {
+			*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
+					      &err_ret);
+		} else {
+			*byte = sdio_readb(sdiodev->func[func], regaddr,
+					   &err_ret);
+		}
+		sdio_release_host(sdiodev->func[func]);
+	}
+
+	if (err_ret)
+		brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
+			  rw ? "write" : "read", func, regaddr, *byte, err_ret);
+
+	return err_ret;
+}
+
+int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
+			     uint rw, uint func, uint addr, u32 *word,
+			     uint nbytes)
+{
+	int err_ret = -EIO;
+
+	if (func == 0) {
+		brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
+		return -EINVAL;
+	}
+
+	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
+		  rw, func, addr, nbytes);
+
+	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
+	if (brcmf_pm_resume_error(sdiodev))
+		return -EIO;
+	/* Claim host controller */
+	sdio_claim_host(sdiodev->func[func]);
+
+	if (rw) {		/* CMD52 Write */
+		if (nbytes == 4)
+			sdio_writel(sdiodev->func[func], *word, addr,
+				    &err_ret);
+		else if (nbytes == 2)
+			sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
+				    addr, &err_ret);
+		else
+			brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
+	} else {		/* CMD52 Read */
+		if (nbytes == 4)
+			*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
+		else if (nbytes == 2)
+			*word = sdio_readw(sdiodev->func[func], addr,
+					   &err_ret) & 0xFFFF;
+		else
+			brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
+	}
+
+	/* Release host controller */
+	sdio_release_host(sdiodev->func[func]);
+
+	if (err_ret)
+		brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
+			  rw ? "write" : "read", err_ret);
+
+	return err_ret;
+}
+
+static int
+brcmf_sdioh_request_packet(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
+			   uint write, uint func, uint addr,
+			   struct sk_buff *pkt)
+{
+	bool fifo = (fix_inc == SDIOH_DATA_FIX);
+	u32 SGCount = 0;
+	int err_ret = 0;
+
+	struct sk_buff *pnext;
+
+	brcmf_dbg(TRACE, "Enter\n");
+
+	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_packet_wait);
+	if (brcmf_pm_resume_error(sdiodev))
+		return -EIO;
+
+	/* Claim host controller */
+	sdio_claim_host(sdiodev->func[func]);
+	for (pnext = pkt; pnext; pnext = pnext->next) {
+		uint pkt_len = pnext->len;
+		pkt_len += 3;
+		pkt_len &= 0xFFFFFFFC;
+
+		if ((write) && (!fifo)) {
+			err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
+						   ((u8 *) (pnext->data)),
+						   pkt_len);
+		} else if (write) {
+			err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
+						   ((u8 *) (pnext->data)),
+						   pkt_len);
+		} else if (fifo) {
+			err_ret = sdio_readsb(sdiodev->func[func],
+					      ((u8 *) (pnext->data)),
+					      addr, pkt_len);
+		} else {
+			err_ret = sdio_memcpy_fromio(sdiodev->func[func],
+						     ((u8 *) (pnext->data)),
+						     addr, pkt_len);
+		}
+
+		if (err_ret) {
+			brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
+				  write ? "TX" : "RX", pnext, SGCount, addr,
+				  pkt_len, err_ret);
+		} else {
+			brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
+				  write ? "TX" : "RX", pnext, SGCount, addr,
+				  pkt_len);
+		}
+
+		if (!fifo)
+			addr += pkt_len;
+		SGCount++;
+
+	}
+
+	/* Release host controller */
+	sdio_release_host(sdiodev->func[func]);
+
+	brcmf_dbg(TRACE, "Exit\n");
+	return err_ret;
+}
+
+/*
+ * This function takes a buffer or packet, and fixes everything up
+ * so that in the end, a DMA-able packet is created.
+ *
+ * A buffer does not have an associated packet pointer,
+ * and may or may not be aligned.
+ * A packet may consist of a single packet, or a packet chain.
+ * If it is a packet chain, then all the packets in the chain
+ * must be properly aligned.
+ *
+ * If the packet data is not aligned, then there may only be
+ * one packet, and in this case,  it is copied to a new
+ * aligned packet.
+ *
+ */
+int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
+			       uint fix_inc, uint write, uint func, uint addr,
+			       uint reg_width, uint buflen_u, u8 *buffer,
+			       struct sk_buff *pkt)
+{
+	int Status;
+	struct sk_buff *mypkt = NULL;
+
+	brcmf_dbg(TRACE, "Enter\n");
+
+	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
+	if (brcmf_pm_resume_error(sdiodev))
+		return -EIO;
+	/* Case 1: we don't have a packet. */
+	if (pkt == NULL) {
+		brcmf_dbg(DATA, "Creating new %s Packet, len=%d\n",
+			  write ? "TX" : "RX", buflen_u);
+		mypkt = brcmu_pkt_buf_get_skb(buflen_u);
+		if (!mypkt) {
+			brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
+				  buflen_u);
+			return -EIO;
+		}
+
+		/* For a write, copy the buffer data into the packet. */
+		if (write)
+			memcpy(mypkt->data, buffer, buflen_u);
+
+		Status = brcmf_sdioh_request_packet(sdiodev, fix_inc, write,
+						    func, addr, mypkt);
+
+		/* For a read, copy the packet data back to the buffer. */
+		if (!write)
+			memcpy(buffer, mypkt->data, buflen_u);
+
+		brcmu_pkt_buf_free_skb(mypkt);
+	} else if (((ulong) (pkt->data) & DMA_ALIGN_MASK) != 0) {
+		/*
+		 * Case 2: We have a packet, but it is unaligned.
+		 * In this case, we cannot have a chain (pkt->next == NULL)
+		 */
+		brcmf_dbg(DATA, "Creating aligned %s Packet, len=%d\n",
+			  write ? "TX" : "RX", pkt->len);
+		mypkt = brcmu_pkt_buf_get_skb(pkt->len);
+		if (!mypkt) {
+			brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n",
+				  pkt->len);
+			return -EIO;
+		}
+
+		/* For a write, copy the buffer data into the packet. */
+		if (write)
+			memcpy(mypkt->data, pkt->data, pkt->len);
+
+		Status = brcmf_sdioh_request_packet(sdiodev, fix_inc, write,
+						    func, addr, mypkt);
+
+		/* For a read, copy the packet data back to the buffer. */
+		if (!write)
+			memcpy(pkt->data, mypkt->data, mypkt->len);
+
+		brcmu_pkt_buf_free_skb(mypkt);
+	} else {		/* case 3: We have a packet and
+				 it is aligned. */
+		brcmf_dbg(DATA, "Aligned %s Packet, direct DMA\n",
+			  write ? "Tx" : "Rx");
+		Status = brcmf_sdioh_request_packet(sdiodev, fix_inc, write,
+						    func, addr, pkt);
+	}
+
+	return Status;
+}
+
+/* Read client card reg */
+static int
+brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr,
+			 int regsize, u32 *data)
+{
+
+	if ((func == 0) || (regsize == 1)) {
+		u8 temp = 0;
+
+		brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr,
+					 &temp);
+		*data = temp;
+		*data &= 0xff;
+		brcmf_dbg(DATA, "byte read data=0x%02x\n", *data);
+	} else {
+		brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr,
+					 data, regsize);
+		if (regsize == 2)
+			*data &= 0xffff;
+
+		brcmf_dbg(DATA, "word read data=0x%08x\n", *data);
+	}
+
+	return SUCCESS;
+}
+
+static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
+{
+	/* read 24 bits and return valid 17 bit addr */
+	int i;
+	u32 scratch, regdata;
+	__le32 scratch_le;
+	u8 *ptr = (u8 *)&scratch_le;
+
+	for (i = 0; i < 3; i++) {
+		if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1,
+				&regdata)) != SUCCESS)
+			brcmf_dbg(ERROR, "Can't read!\n");
+
+		*ptr++ = (u8) regdata;
+		regaddr++;
+	}
+
+	/* Only the lower 17-bits are valid */
+	scratch = le32_to_cpu(scratch_le);
+	scratch &= 0x0001FFFF;
+	return scratch;
+}
+
+static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
+{
+	int err_ret;
+	u32 fbraddr;
+	u8 func;
+
+	brcmf_dbg(TRACE, "\n");
+
+	/* Get the Card's common CIS address */
+	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
+							   SDIO_CCCR_CIS);
+	brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
+		  sdiodev->func_cis_ptr[0]);
+
+	/* Get the Card's function CIS (for each function) */
+	for (fbraddr = SDIO_FBR_BASE(1), func = 1;
+	     func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
+		sdiodev->func_cis_ptr[func] =
+		    brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
+		brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
+			  func, sdiodev->func_cis_ptr[func]);
+	}
+
+	/* Enable Function 1 */
+	sdio_claim_host(sdiodev->func[1]);
+	err_ret = sdio_enable_func(sdiodev->func[1]);
+	sdio_release_host(sdiodev->func[1]);
+	if (err_ret)
+		brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
+
+	return false;
+}
+
+/*
+ *	Public entry points & extern's
+ */
+int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
+{
+	int err_ret = 0;
+
+	brcmf_dbg(TRACE, "\n");
+
+	sdiodev->num_funcs = 2;
+
+	sdio_claim_host(sdiodev->func[1]);
+	err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
+	sdio_release_host(sdiodev->func[1]);
+	if (err_ret) {
+		brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
+		goto out;
+	}
+
+	sdio_claim_host(sdiodev->func[2]);
+	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
+	sdio_release_host(sdiodev->func[2]);
+	if (err_ret) {
+		brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
+		goto out;
+	}
+
+	brcmf_sdioh_enablefuncs(sdiodev);
+
+out:
+	brcmf_dbg(TRACE, "Done\n");
+	return err_ret;
+}
+
+void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
+{
+	brcmf_dbg(TRACE, "\n");
+
+	/* Disable Function 2 */
+	sdio_claim_host(sdiodev->func[2]);
+	sdio_disable_func(sdiodev->func[2]);
+	sdio_release_host(sdiodev->func[2]);
+
+	/* Disable Function 1 */
+	sdio_claim_host(sdiodev->func[1]);
+	sdio_disable_func(sdiodev->func[1]);
+	sdio_release_host(sdiodev->func[1]);
+
+}
+
+static int brcmf_ops_sdio_probe(struct sdio_func *func,
+			      const struct sdio_device_id *id)
+{
+	int ret = 0;
+	struct brcmf_sdio_dev *sdiodev;
+	brcmf_dbg(TRACE, "Enter\n");
+	brcmf_dbg(TRACE, "func->class=%x\n", func->class);
+	brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
+	brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
+	brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
+
+	if (func->num == 1) {
+		if (dev_get_drvdata(&func->card->dev)) {
+			brcmf_dbg(ERROR, "card private drvdata occupied\n");
+			return -ENXIO;
+		}
+		sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
+		if (!sdiodev)
+			return -ENOMEM;
+		sdiodev->func[0] = func->card->sdio_func[0];
+		sdiodev->func[1] = func;
+		dev_set_drvdata(&func->card->dev, sdiodev);
+
+		atomic_set(&sdiodev->suspend, false);
+		init_waitqueue_head(&sdiodev->request_byte_wait);
+		init_waitqueue_head(&sdiodev->request_word_wait);
+		init_waitqueue_head(&sdiodev->request_packet_wait);
+		init_waitqueue_head(&sdiodev->request_buffer_wait);
+	}
+
+	if (func->num == 2) {
+		sdiodev = dev_get_drvdata(&func->card->dev);
+		if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
+			return -ENODEV;
+		sdiodev->func[2] = func;
+
+		brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
+		ret = brcmf_sdio_probe(sdiodev);
+	}
+
+	return ret;
+}
+
+static void brcmf_ops_sdio_remove(struct sdio_func *func)
+{
+	struct brcmf_sdio_dev *sdiodev;
+	brcmf_dbg(TRACE, "Enter\n");
+	brcmf_dbg(INFO, "func->class=%x\n", func->class);
+	brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
+	brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
+	brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
+
+	if (func->num == 2) {
+		sdiodev = dev_get_drvdata(&func->card->dev);
+		brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
+		brcmf_sdio_remove(sdiodev);
+		dev_set_drvdata(&func->card->dev, NULL);
+		kfree(sdiodev);
+	}
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int brcmf_sdio_suspend(struct device *dev)
+{
+	mmc_pm_flag_t sdio_flags;
+	struct brcmf_sdio_dev *sdiodev;
+	struct sdio_func *func = dev_to_sdio_func(dev);
+	int ret = 0;
+
+	brcmf_dbg(TRACE, "\n");
+
+	sdiodev = dev_get_drvdata(&func->card->dev);
+
+	atomic_set(&sdiodev->suspend, true);
+
+	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
+	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
+		brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
+		return -EINVAL;
+	}
+
+	ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
+	if (ret) {
+		brcmf_dbg(ERROR, "Failed to set pm_flags\n");
+		return ret;
+	}
+
+	brcmf_sdio_wdtmr_enable(sdiodev, false);
+
+	return ret;
+}
+
+static int brcmf_sdio_resume(struct device *dev)
+{
+	struct brcmf_sdio_dev *sdiodev;
+	struct sdio_func *func = dev_to_sdio_func(dev);
+
+	sdiodev = dev_get_drvdata(&func->card->dev);
+	brcmf_sdio_wdtmr_enable(sdiodev, true);
+	atomic_set(&sdiodev->suspend, false);
+	return 0;
+}
+
+static const struct dev_pm_ops brcmf_sdio_pm_ops = {
+	.suspend	= brcmf_sdio_suspend,
+	.resume		= brcmf_sdio_resume,
+};
+#endif	/* CONFIG_PM_SLEEP */
+
+static struct sdio_driver brcmf_sdmmc_driver = {
+	.probe = brcmf_ops_sdio_probe,
+	.remove = brcmf_ops_sdio_remove,
+	.name = "brcmfmac",
+	.id_table = brcmf_sdmmc_ids,
+#ifdef CONFIG_PM_SLEEP
+	.drv = {
+		.pm = &brcmf_sdio_pm_ops,
+	},
+#endif	/* CONFIG_PM_SLEEP */
+};
+
+/* bus register interface */
+int brcmf_bus_register(void)
+{
+	brcmf_dbg(TRACE, "Enter\n");
+
+	return sdio_register_driver(&brcmf_sdmmc_driver);
+}
+
+void brcmf_bus_unregister(void)
+{
+	brcmf_dbg(TRACE, "Enter\n");
+
+	sdio_unregister_driver(&brcmf_sdmmc_driver);
+}