[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / bcmsdh_sdmmc.c

/*
 * 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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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 <linux/platform_device.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_dbg.h"
#include "dhd_bus.h"

#define SDIO_VENDOR_ID_BROADCOM		0x02d0

#define DMA_ALIGN_MASK	0x03

#define SDIO_DEVICE_ID_BROADCOM_43241	0x4324
#define SDIO_DEVICE_ID_BROADCOM_4329	0x4329
#define SDIO_DEVICE_ID_BROADCOM_4330	0x4330
#define SDIO_DEVICE_ID_BROADCOM_4334	0x4334

#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_43241)},
	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
	{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static struct list_head oobirq_lh;
struct brcmf_sdio_oobirq {
	unsigned int irq;
	unsigned long flags;
	struct list_head list;
};
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */

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) {
			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);
			}
		}
	} else if ((regaddr == SDIO_CCCR_ABORT) ||
		   (regaddr == SDIO_CCCR_IENx)) {
		sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
				 GFP_KERNEL);
		if (!sdfunc)
			return -ENOMEM;
		sdfunc->num = 0;
		sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
		kfree(sdfunc);
	} else if (regaddr < 0xF0) {
		brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
		err_ret = -EPERM;
	} else {
		sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
	}

	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 {
		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);
		}
	}

	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;

	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);
	}

	if (err_ret)
		brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
			  rw ? "write" : "read", err_ret);

	return err_ret;
}

/* precondition: host controller is claimed */
static int
brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
			 uint func, uint addr, struct sk_buff *pkt, uint pktlen)
{
	int err_ret = 0;

	if ((write) && (!fifo)) {
		err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
					   ((u8 *) (pkt->data)), pktlen);
	} else if (write) {
		err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
					   ((u8 *) (pkt->data)), pktlen);
	} else if (fifo) {
		err_ret = sdio_readsb(sdiodev->func[func],
				      ((u8 *) (pkt->data)), addr, pktlen);
	} else {
		err_ret = sdio_memcpy_fromio(sdiodev->func[func],
					     ((u8 *) (pkt->data)),
					     addr, pktlen);
	}

	return err_ret;
}

/*
 * This function takes a queue of packets. The packets on the queue
 * are assumed to be properly aligned by the caller.
 */
int
brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
			  uint write, uint func, uint addr,
			  struct sk_buff_head *pktq)
{
	bool fifo = (fix_inc == SDIOH_DATA_FIX);
	u32 SGCount = 0;
	int err_ret = 0;

	struct sk_buff *pkt;

	brcmf_dbg(TRACE, "Enter\n");

	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
	if (brcmf_pm_resume_error(sdiodev))
		return -EIO;

	skb_queue_walk(pktq, pkt) {
		uint pkt_len = pkt->len;
		pkt_len += 3;
		pkt_len &= 0xFFFFFFFC;

		err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
						   addr, pkt, 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", pkt, SGCount, addr,
				  pkt_len, err_ret);
		} else {
			brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
				  write ? "TX" : "RX", pkt, SGCount, addr,
				  pkt_len);
		}
		if (!fifo)
			addr += pkt_len;

		SGCount++;
	}

	brcmf_dbg(TRACE, "Exit\n");
	return err_ret;
}

/*
 * This function takes a single DMA-able packet.
 */
int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
			       uint fix_inc, uint write, uint func, uint addr,
			       struct sk_buff *pkt)
{
	int status;
	uint pkt_len;
	bool fifo = (fix_inc == SDIOH_DATA_FIX);

	brcmf_dbg(TRACE, "Enter\n");

	if (pkt == NULL)
		return -EINVAL;
	pkt_len = pkt->len;

	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
	if (brcmf_pm_resume_error(sdiodev))
		return -EIO;

	pkt_len += 3;
	pkt_len &= (uint)~3;

	status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
					   addr, pkt, pkt_len);
	if (status) {
		brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
			  write ? "TX" : "RX", pkt, addr, pkt_len, status);
	} else {
		brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
			  write ? "TX" : "RX", pkt, addr, pkt_len);
	}

	return status;
}

static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
{
	/* read 24 bits and return valid 17 bit addr */
	int i, ret;
	u32 scratch, regdata;
	__le32 scratch_le;
	u8 *ptr = (u8 *)&scratch_le;

	for (i = 0; i < 3; i++) {
		regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
		if (ret != 0)
			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 */
	err_ret = sdio_enable_func(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);
	if (err_ret) {
		brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
		goto out;
	}

	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
	if (err_ret) {
		brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
		goto out;
	}

	brcmf_sdioh_enablefuncs(sdiodev);

out:
	sdio_release_host(sdiodev->func[1]);
	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]);

}

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
{
	struct brcmf_sdio_oobirq *oobirq_entry;

	if (list_empty(&oobirq_lh)) {
		brcmf_dbg(ERROR, "no valid oob irq resource\n");
		return -ENXIO;
	}

	oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
					list);

	sdiodev->irq = oobirq_entry->irq;
	sdiodev->irq_flags = oobirq_entry->flags;
	list_del(&oobirq_entry->list);
	kfree(oobirq_entry);

	return 0;
}
#else
static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
{
	return 0;
}
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */

static int brcmf_ops_sdio_probe(struct sdio_func *func,
			      const struct sdio_device_id *id)
{
	int ret = 0;
	struct brcmf_sdio_dev *sdiodev;
	struct brcmf_bus *bus_if;

	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;
		}
		bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
		if (!bus_if)
			return -ENOMEM;
		sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
		if (!sdiodev) {
			kfree(bus_if);
			return -ENOMEM;
		}
		sdiodev->func[0] = func;
		sdiodev->func[1] = func;
		sdiodev->bus_if = bus_if;
		bus_if->bus_priv.sdio = sdiodev;
		bus_if->type = SDIO_BUS;
		bus_if->align = BRCMF_SDALIGN;
		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_chain_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;

		ret = brcmf_sdio_getintrcfg(sdiodev);
		if (ret)
			return ret;
		sdiodev->func[2] = func;

		bus_if = sdiodev->bus_if;
		sdiodev->dev = &func->dev;
		dev_set_drvdata(&func->dev, bus_if);

		brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
		ret = brcmf_sdio_probe(sdiodev);
		if (ret)
			dev_set_drvdata(&func->dev, NULL);
	}

	return ret;
}

static void brcmf_ops_sdio_remove(struct sdio_func *func)
{
	struct brcmf_bus *bus_if;
	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) {
		bus_if = dev_get_drvdata(&func->dev);
		sdiodev = bus_if->bus_priv.sdio;
		brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
		brcmf_sdio_remove(sdiodev);
		dev_set_drvdata(&func->dev, NULL);
	}
	if (func->num == 1) {
		sdiodev = dev_get_drvdata(&func->card->dev);
		bus_if = sdiodev->bus_if;
		dev_set_drvdata(&func->card->dev, NULL);
		kfree(bus_if);
		kfree(sdiodev);
	}
}

#ifdef CONFIG_PM_SLEEP
static int brcmf_sdio_suspend(struct device *dev)
{
	mmc_pm_flag_t sdio_flags;
	struct sdio_func *func = dev_to_sdio_func(dev);
	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
	int ret = 0;

	brcmf_dbg(TRACE, "\n");

	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 sdio_func *func = dev_to_sdio_func(dev);
	struct brcmf_sdio_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 */
};

#ifdef CONFIG_BRCMFMAC_SDIO_OOB
static int brcmf_sdio_pd_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct brcmf_sdio_oobirq *oobirq_entry;
	int i, ret;

	INIT_LIST_HEAD(&oobirq_lh);

	for (i = 0; ; i++) {
		res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
		if (!res)
			break;

		oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
				       GFP_KERNEL);
		if (!oobirq_entry)
			return -ENOMEM;
		oobirq_entry->irq = res->start;
		oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
		list_add_tail(&oobirq_entry->list, &oobirq_lh);
	}
	if (i == 0)
		return -ENXIO;

	ret = sdio_register_driver(&brcmf_sdmmc_driver);

	if (ret)
		brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);

	return ret;
}

static struct platform_driver brcmf_sdio_pd = {
	.probe		= brcmf_sdio_pd_probe,
	.driver		= {
		.name	= "brcmf_sdio_pd"
	}
};

void brcmf_sdio_exit(void)
{
	brcmf_dbg(TRACE, "Enter\n");

	sdio_unregister_driver(&brcmf_sdmmc_driver);

	platform_driver_unregister(&brcmf_sdio_pd);
}

void brcmf_sdio_init(void)
{
	int ret;

	brcmf_dbg(TRACE, "Enter\n");

	ret = platform_driver_register(&brcmf_sdio_pd);

	if (ret)
		brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
}
#else
void brcmf_sdio_exit(void)
{
	brcmf_dbg(TRACE, "Enter\n");

	sdio_unregister_driver(&brcmf_sdmmc_driver);
}

void brcmf_sdio_init(void)
{
	int ret;

	brcmf_dbg(TRACE, "Enter\n");

	ret = sdio_register_driver(&brcmf_sdmmc_driver);

	if (ret)
		brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
}
#endif		/* CONFIG_BRCMFMAC_SDIO_OOB */
Commit	Line	Data
5b435de0 AS	1	/*
	2	* Copyright (c) 2010 Broadcom Corporation
	3	*
	4	* Permission to use, copy, modify, and/or distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
	11	* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
	13	* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
	14	* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
02f77195 JP	16
	17	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	18
5b435de0 AS	19	#include <linux/types.h>
	20	#include <linux/netdevice.h>
	21	#include <linux/mmc/sdio.h>
	22	#include <linux/mmc/core.h>
	23	#include <linux/mmc/sdio_func.h>
	24	#include <linux/mmc/sdio_ids.h>
	25	#include <linux/mmc/card.h>
	26	#include <linux/suspend.h>
	27	#include <linux/errno.h>
	28	#include <linux/sched.h> /* request_irq() */
b7a57e76	29	#include <linux/module.h>
ba89bf19	30	#include <linux/platform_device.h>
5b435de0 AS	31	#include <net/cfg80211.h>
	32
	33	#include <defs.h>
	34	#include <brcm_hw_ids.h>
	35	#include <brcmu_utils.h>
	36	#include <brcmu_wifi.h>
	37	#include "sdio_host.h"
5b435de0	38	#include "dhd_dbg.h"
a8a363ac	39	#include "dhd_bus.h"
5b435de0 AS	40
	41	#define SDIO_VENDOR_ID_BROADCOM 0x02d0
	42
	43	#define DMA_ALIGN_MASK 0x03
	44
4a1c02ce	45	#define SDIO_DEVICE_ID_BROADCOM_43241 0x4324
5b435de0	46	#define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
ce2d7d7e	47	#define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
85a4a1c3	48	#define SDIO_DEVICE_ID_BROADCOM_4334 0x4334
5b435de0 AS	49
	50	#define SDIO_FUNC1_BLOCKSIZE 64
	51	#define SDIO_FUNC2_BLOCKSIZE 512
	52
	53	/* devices we support, null terminated */
	54	static const struct sdio_device_id brcmf_sdmmc_ids[] = {
4a1c02ce	55	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
5b435de0	56	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
ce2d7d7e	57	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
85a4a1c3	58	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
5b435de0 AS	59	{ /* end: all zeroes */ },
	60	};
	61	MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
	62
ba89bf19 FL	63	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	64	static struct list_head oobirq_lh;
	65	struct brcmf_sdio_oobirq {
	66	unsigned int irq;
	67	unsigned long flags;
	68	struct list_head list;
	69	};
	70	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
	71
5b435de0 AS	72	static bool
	73	brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
	74	{
	75	bool is_err = false;
	76	#ifdef CONFIG_PM_SLEEP
	77	is_err = atomic_read(&sdiodev->suspend);
	78	#endif
	79	return is_err;
	80	}
	81
	82	static void
	83	brcmf_pm_resume_wait(struct brcmf_sdio_dev sdiodev, wait_queue_head_t wq)
	84	{
	85	#ifdef CONFIG_PM_SLEEP
	86	int retry = 0;
	87	while (atomic_read(&sdiodev->suspend) && retry++ != 30)
	88	wait_event_timeout(*wq, false, HZ/100);
	89	#endif
	90	}
	91
	92	static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
	93	uint regaddr, u8 *byte)
	94	{
	95	struct sdio_func *sdfunc = sdiodev->func[0];
	96	int err_ret;
	97
	98	/*
	99	* Can only directly write to some F0 registers.
	100	* Handle F2 enable/disable and Abort command
	101	* as a special case.
	102	*/
	103	if (regaddr == SDIO_CCCR_IOEx) {
	104	sdfunc = sdiodev->func[2];
	105	if (sdfunc) {
5b435de0 AS	106	if (*byte & SDIO_FUNC_ENABLE_2) {
	107	/* Enable Function 2 */
	108	err_ret = sdio_enable_func(sdfunc);
	109	if (err_ret)
	110	brcmf_dbg(ERROR,
	111	"enable F2 failed:%d\n",
	112	err_ret);
	113	} else {
	114	/* Disable Function 2 */
	115	err_ret = sdio_disable_func(sdfunc);
	116	if (err_ret)
	117	brcmf_dbg(ERROR,
	118	"Disable F2 failed:%d\n",
	119	err_ret);
	120	}
5b435de0	121	}
ba89bf19 FL	122	} else if ((regaddr == SDIO_CCCR_ABORT) \|\|
ba89bf19 FL	123	(regaddr == SDIO_CCCR_IENx)) {
1cc26990 FL	124	sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
	125	GFP_KERNEL);
	126	if (!sdfunc)
	127	return -ENOMEM;
	128	sdfunc->num = 0;
5b435de0	129	sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
1cc26990	130	kfree(sdfunc);
5b435de0 AS	131	} else if (regaddr < 0xF0) {
	132	brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
	133	err_ret = -EPERM;
	134	} else {
5b435de0	135	sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
5b435de0 AS	136	}
	137
	138	return err_ret;
	139	}
	140
	141	int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
	142	uint regaddr, u8 *byte)
	143	{
	144	int err_ret;
	145
	146	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
	147
	148	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
	149	if (brcmf_pm_resume_error(sdiodev))
	150	return -EIO;
	151
	152	if (rw && func == 0) {
	153	/* handle F0 separately */
	154	err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
	155	} else {
5b435de0 AS	156	if (rw) /* CMD52 Write */
	157	sdio_writeb(sdiodev->func[func], *byte, regaddr,
	158	&err_ret);
	159	else if (func == 0) {
	160	*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
	161	&err_ret);
	162	} else {
	163	*byte = sdio_readb(sdiodev->func[func], regaddr,
	164	&err_ret);
	165	}
5b435de0 AS	166	}
	167
	168	if (err_ret)
	169	brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
	170	rw ? "write" : "read", func, regaddr, *byte, err_ret);
	171
	172	return err_ret;
	173	}
	174
	175	int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
	176	uint rw, uint func, uint addr, u32 *word,
	177	uint nbytes)
	178	{
	179	int err_ret = -EIO;
	180
	181	if (func == 0) {
	182	brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
	183	return -EINVAL;
	184	}
	185
	186	brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
	187	rw, func, addr, nbytes);
	188
	189	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
	190	if (brcmf_pm_resume_error(sdiodev))
	191	return -EIO;
5b435de0 AS	192
	193	if (rw) { /* CMD52 Write */
	194	if (nbytes == 4)
	195	sdio_writel(sdiodev->func[func], *word, addr,
	196	&err_ret);
	197	else if (nbytes == 2)
	198	sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
	199	addr, &err_ret);
	200	else
	201	brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
	202	} else { /* CMD52 Read */
	203	if (nbytes == 4)
	204	*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
	205	else if (nbytes == 2)
	206	*word = sdio_readw(sdiodev->func[func], addr,
	207	&err_ret) & 0xFFFF;
	208	else
	209	brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
	210	}
	211
5b435de0 AS	212	if (err_ret)
	213	brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
	214	rw ? "write" : "read", err_ret);
	215
	216	return err_ret;
	217	}
	218
5adfeb63 AS	219	/* precondition: host controller is claimed */
	220	static int
	221	brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
	222	uint func, uint addr, struct sk_buff *pkt, uint pktlen)
	223	{
	224	int err_ret = 0;
	225
	226	if ((write) && (!fifo)) {
	227	err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
	228	((u8 *) (pkt->data)), pktlen);
	229	} else if (write) {
	230	err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
	231	((u8 *) (pkt->data)), pktlen);
	232	} else if (fifo) {
	233	err_ret = sdio_readsb(sdiodev->func[func],
	234	((u8 *) (pkt->data)), addr, pktlen);
	235	} else {
	236	err_ret = sdio_memcpy_fromio(sdiodev->func[func],
	237	((u8 *) (pkt->data)),
	238	addr, pktlen);
	239	}
	240
	241	return err_ret;
	242	}
	243
a52dd17d AS	244	/*
	245	* This function takes a queue of packets. The packets on the queue
	246	* are assumed to be properly aligned by the caller.
	247	*/
5adfeb63 AS	248	int
	249	brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
	250	uint write, uint func, uint addr,
	251	struct sk_buff_head *pktq)
5b435de0 AS	252	{
	253	bool fifo = (fix_inc == SDIOH_DATA_FIX);
	254	u32 SGCount = 0;
	255	int err_ret = 0;
	256
5adfeb63	257	struct sk_buff *pkt;
5b435de0 AS	258
	259	brcmf_dbg(TRACE, "Enter\n");
	260
a52dd17d	261	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
5b435de0 AS	262	if (brcmf_pm_resume_error(sdiodev))
	263	return -EIO;
	264
5adfeb63 AS	265	skb_queue_walk(pktq, pkt) {
5adfeb63 AS	266	uint pkt_len = pkt->len;
5b435de0 AS	267	pkt_len += 3;
	268	pkt_len &= 0xFFFFFFFC;
	269
5adfeb63 AS	270	err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
5adfeb63 AS	271	addr, pkt, pkt_len);
5b435de0 AS	272	if (err_ret) {
5b435de0 AS	273	brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
5adfeb63	274	write ? "TX" : "RX", pkt, SGCount, addr,
5b435de0 AS	275	pkt_len, err_ret);
	276	} else {
	277	brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
5adfeb63	278	write ? "TX" : "RX", pkt, SGCount, addr,
5b435de0 AS	279	pkt_len);
5b435de0 AS	280	}
5b435de0 AS	281	if (!fifo)
5b435de0 AS	282	addr += pkt_len;
5b435de0	283
5adfeb63	284	SGCount++;
5b435de0 AS	285	}
5b435de0 AS	286
5b435de0 AS	287	brcmf_dbg(TRACE, "Exit\n");
	288	return err_ret;
	289	}
	290
	291	/*
8054321b	292	* This function takes a single DMA-able packet.
5b435de0 AS	293	*/
	294	int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
	295	uint fix_inc, uint write, uint func, uint addr,
4c6e869d	296	struct sk_buff *pkt)
5b435de0	297	{
4c6e869d	298	int status;
2315992c	299	uint pkt_len;
8054321b	300	bool fifo = (fix_inc == SDIOH_DATA_FIX);
5b435de0 AS	301
	302	brcmf_dbg(TRACE, "Enter\n");
	303
4c6e869d AS	304	if (pkt == NULL)
4c6e869d AS	305	return -EINVAL;
2315992c	306	pkt_len = pkt->len;
4c6e869d	307
5b435de0 AS	308	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
	309	if (brcmf_pm_resume_error(sdiodev))
	310	return -EIO;
5b435de0	311
8054321b AS	312	pkt_len += 3;
8054321b AS	313	pkt_len &= (uint)~3;
5b435de0	314
8054321b AS	315	status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
	316	addr, pkt, pkt_len);
	317	if (status) {
	318	brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
	319	write ? "TX" : "RX", pkt, addr, pkt_len, status);
	320	} else {
	321	brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
	322	write ? "TX" : "RX", pkt, addr, pkt_len);
5b435de0 AS	323	}
5b435de0 AS	324
4c6e869d	325	return status;
5b435de0 AS	326	}
5b435de0 AS	327
5b435de0 AS	328	static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
	329	{
	330	/* read 24 bits and return valid 17 bit addr */
d8b3fc59	331	int i, ret;
5b435de0 AS	332	u32 scratch, regdata;
	333	__le32 scratch_le;
	334	u8 ptr = (u8 )&scratch_le;
	335
	336	for (i = 0; i < 3; i++) {
d8b3fc59 FL	337	regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
d8b3fc59 FL	338	if (ret != 0)
5b435de0 AS	339	brcmf_dbg(ERROR, "Can't read!\n");
	340
	341	*ptr++ = (u8) regdata;
	342	regaddr++;
	343	}
	344
	345	/* Only the lower 17-bits are valid */
	346	scratch = le32_to_cpu(scratch_le);
	347	scratch &= 0x0001FFFF;
	348	return scratch;
	349	}
	350
	351	static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
	352	{
	353	int err_ret;
	354	u32 fbraddr;
	355	u8 func;
	356
	357	brcmf_dbg(TRACE, "\n");
	358
	359	/* Get the Card's common CIS address */
	360	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
	361	SDIO_CCCR_CIS);
	362	brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
	363	sdiodev->func_cis_ptr[0]);
	364
	365	/* Get the Card's function CIS (for each function) */
	366	for (fbraddr = SDIO_FBR_BASE(1), func = 1;
	367	func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
	368	sdiodev->func_cis_ptr[func] =
	369	brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
	370	brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
	371	func, sdiodev->func_cis_ptr[func]);
	372	}
	373
	374	/* Enable Function 1 */
5b435de0	375	err_ret = sdio_enable_func(sdiodev->func[1]);
5b435de0 AS	376	if (err_ret)
	377	brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
	378
	379	return false;
	380	}
	381
	382	/*
	383	* Public entry points & extern's
	384	*/
	385	int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
	386	{
	387	int err_ret = 0;
	388
	389	brcmf_dbg(TRACE, "\n");
	390
	391	sdiodev->num_funcs = 2;
	392
	393	sdio_claim_host(sdiodev->func[1]);
38b0b0dd	394
5b435de0	395	err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
5b435de0 AS	396	if (err_ret) {
	397	brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
	398	goto out;
	399	}
	400
5b435de0	401	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
5b435de0 AS	402	if (err_ret) {
	403	brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
	404	goto out;
	405	}
	406
	407	brcmf_sdioh_enablefuncs(sdiodev);
	408
	409	out:
38b0b0dd	410	sdio_release_host(sdiodev->func[1]);
5b435de0 AS	411	brcmf_dbg(TRACE, "Done\n");
	412	return err_ret;
	413	}
	414
	415	void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
	416	{
	417	brcmf_dbg(TRACE, "\n");
	418
	419	/* Disable Function 2 */
	420	sdio_claim_host(sdiodev->func[2]);
	421	sdio_disable_func(sdiodev->func[2]);
	422	sdio_release_host(sdiodev->func[2]);
	423
	424	/* Disable Function 1 */
	425	sdio_claim_host(sdiodev->func[1]);
	426	sdio_disable_func(sdiodev->func[1]);
	427	sdio_release_host(sdiodev->func[1]);
	428
	429	}
	430
ba89bf19 FL	431	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	432	static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
	433	{
	434	struct brcmf_sdio_oobirq *oobirq_entry;
	435
	436	if (list_empty(&oobirq_lh)) {
	437	brcmf_dbg(ERROR, "no valid oob irq resource\n");
	438	return -ENXIO;
	439	}
	440
	441	oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
	442	list);
	443
	444	sdiodev->irq = oobirq_entry->irq;
	445	sdiodev->irq_flags = oobirq_entry->flags;
	446	list_del(&oobirq_entry->list);
	447	kfree(oobirq_entry);
	448
	449	return 0;
	450	}
	451	#else
	452	static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
	453	{
	454	return 0;
	455	}
	456	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
	457
5b435de0 AS	458	static int brcmf_ops_sdio_probe(struct sdio_func *func,
	459	const struct sdio_device_id *id)
	460	{
	461	int ret = 0;
	462	struct brcmf_sdio_dev *sdiodev;
655713be	463	struct brcmf_bus *bus_if;
ba89bf19	464
5b435de0 AS	465	brcmf_dbg(TRACE, "Enter\n");
	466	brcmf_dbg(TRACE, "func->class=%x\n", func->class);
	467	brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
	468	brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
	469	brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
	470
	471	if (func->num == 1) {
	472	if (dev_get_drvdata(&func->card->dev)) {
	473	brcmf_dbg(ERROR, "card private drvdata occupied\n");
	474	return -ENXIO;
	475	}
655713be FL	476	bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
	477	if (!bus_if)
	478	return -ENOMEM;
5b435de0	479	sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
ad9547c0 DC	480	if (!sdiodev) {
ad9547c0 DC	481	kfree(bus_if);
5b435de0	482	return -ENOMEM;
ad9547c0	483	}
1cc26990	484	sdiodev->func[0] = func;
5b435de0	485	sdiodev->func[1] = func;
d76d1c8c	486	sdiodev->bus_if = bus_if;
0a332e46	487	bus_if->bus_priv.sdio = sdiodev;
655713be	488	bus_if->type = SDIO_BUS;
6e3c7128	489	bus_if->align = BRCMF_SDALIGN;
d76d1c8c	490	dev_set_drvdata(&func->card->dev, sdiodev);
5b435de0 AS	491
	492	atomic_set(&sdiodev->suspend, false);
	493	init_waitqueue_head(&sdiodev->request_byte_wait);
	494	init_waitqueue_head(&sdiodev->request_word_wait);
a52dd17d	495	init_waitqueue_head(&sdiodev->request_chain_wait);
5b435de0 AS	496	init_waitqueue_head(&sdiodev->request_buffer_wait);
	497	}
	498
	499	if (func->num == 2) {
d76d1c8c	500	sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0 AS	501	if ((!sdiodev) \|\| (sdiodev->func[1]->card != func->card))
5b435de0 AS	502	return -ENODEV;
ba89bf19 FL	503
	504	ret = brcmf_sdio_getintrcfg(sdiodev);
	505	if (ret)
	506	return ret;
5b435de0 AS	507	sdiodev->func[2] = func;
5b435de0 AS	508
d76d1c8c FL	509	bus_if = sdiodev->bus_if;
	510	sdiodev->dev = &func->dev;
	511	dev_set_drvdata(&func->dev, bus_if);
	512
5b435de0 AS	513	brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
5b435de0 AS	514	ret = brcmf_sdio_probe(sdiodev);
37ac5780 HM	515	if (ret)
37ac5780 HM	516	dev_set_drvdata(&func->dev, NULL);
5b435de0 AS	517	}
	518
	519	return ret;
	520	}
	521
	522	static void brcmf_ops_sdio_remove(struct sdio_func *func)
	523	{
655713be	524	struct brcmf_bus *bus_if;
5b435de0 AS	525	struct brcmf_sdio_dev *sdiodev;
	526	brcmf_dbg(TRACE, "Enter\n");
	527	brcmf_dbg(INFO, "func->class=%x\n", func->class);
	528	brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
	529	brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
	530	brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
	531
	532	if (func->num == 2) {
d76d1c8c	533	bus_if = dev_get_drvdata(&func->dev);
0a332e46	534	sdiodev = bus_if->bus_priv.sdio;
5b435de0 AS	535	brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
5b435de0 AS	536	brcmf_sdio_remove(sdiodev);
d76d1c8c	537	dev_set_drvdata(&func->dev, NULL);
37ac5780 HM	538	}
	539	if (func->num == 1) {
	540	sdiodev = dev_get_drvdata(&func->card->dev);
	541	bus_if = sdiodev->bus_if;
	542	dev_set_drvdata(&func->card->dev, NULL);
655713be	543	kfree(bus_if);
5b435de0 AS	544	kfree(sdiodev);
	545	}
	546	}
	547
	548	#ifdef CONFIG_PM_SLEEP
	549	static int brcmf_sdio_suspend(struct device *dev)
	550	{
	551	mmc_pm_flag_t sdio_flags;
5b435de0	552	struct sdio_func *func = dev_to_sdio_func(dev);
d76d1c8c	553	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0 AS	554	int ret = 0;
	555
	556	brcmf_dbg(TRACE, "\n");
	557
5b435de0 AS	558	atomic_set(&sdiodev->suspend, true);
	559
	560	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
	561	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
	562	brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
	563	return -EINVAL;
	564	}
	565
	566	ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
	567	if (ret) {
	568	brcmf_dbg(ERROR, "Failed to set pm_flags\n");
	569	return ret;
	570	}
	571
	572	brcmf_sdio_wdtmr_enable(sdiodev, false);
	573
	574	return ret;
	575	}
	576
	577	static int brcmf_sdio_resume(struct device *dev)
	578	{
5b435de0	579	struct sdio_func *func = dev_to_sdio_func(dev);
d76d1c8c	580	struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
5b435de0	581
5b435de0 AS	582	brcmf_sdio_wdtmr_enable(sdiodev, true);
	583	atomic_set(&sdiodev->suspend, false);
	584	return 0;
	585	}
	586
	587	static const struct dev_pm_ops brcmf_sdio_pm_ops = {
	588	.suspend = brcmf_sdio_suspend,
	589	.resume = brcmf_sdio_resume,
	590	};
	591	#endif /* CONFIG_PM_SLEEP */
	592
	593	static struct sdio_driver brcmf_sdmmc_driver = {
	594	.probe = brcmf_ops_sdio_probe,
	595	.remove = brcmf_ops_sdio_remove,
	596	.name = "brcmfmac",
	597	.id_table = brcmf_sdmmc_ids,
	598	#ifdef CONFIG_PM_SLEEP
	599	.drv = {
	600	.pm = &brcmf_sdio_pm_ops,
	601	},
	602	#endif /* CONFIG_PM_SLEEP */
	603	};
	604
ba89bf19 FL	605	#ifdef CONFIG_BRCMFMAC_SDIO_OOB
	606	static int brcmf_sdio_pd_probe(struct platform_device *pdev)
	607	{
	608	struct resource *res;
	609	struct brcmf_sdio_oobirq *oobirq_entry;
	610	int i, ret;
	611
	612	INIT_LIST_HEAD(&oobirq_lh);
	613
	614	for (i = 0; ; i++) {
	615	res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
	616	if (!res)
	617	break;
	618
	619	oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
	620	GFP_KERNEL);
4abd044a CIK	621	if (!oobirq_entry)
4abd044a CIK	622	return -ENOMEM;
ba89bf19 FL	623	oobirq_entry->irq = res->start;
	624	oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
	625	list_add_tail(&oobirq_entry->list, &oobirq_lh);
	626	}
	627	if (i == 0)
	628	return -ENXIO;
	629
	630	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	631
	632	if (ret)
	633	brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
	634
	635	return ret;
	636	}
	637
	638	static struct platform_driver brcmf_sdio_pd = {
	639	.probe = brcmf_sdio_pd_probe,
	640	.driver = {
	641	.name = "brcmf_sdio_pd"
	642	}
	643	};
	644
	645	void brcmf_sdio_exit(void)
	646	{
	647	brcmf_dbg(TRACE, "Enter\n");
	648
	649	sdio_unregister_driver(&brcmf_sdmmc_driver);
	650
	651	platform_driver_unregister(&brcmf_sdio_pd);
	652	}
	653
	654	void brcmf_sdio_init(void)
	655	{
	656	int ret;
	657
	658	brcmf_dbg(TRACE, "Enter\n");
	659
	660	ret = platform_driver_register(&brcmf_sdio_pd);
	661
	662	if (ret)
	663	brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
	664	}
	665	#else
f3d7cdc3	666	void brcmf_sdio_exit(void)
5b435de0 AS	667	{
	668	brcmf_dbg(TRACE, "Enter\n");
	669
3392c888	670	sdio_unregister_driver(&brcmf_sdmmc_driver);
5b435de0 AS	671	}
5b435de0 AS	672
549040ab	673	void brcmf_sdio_init(void)
5b435de0	674	{
3392c888 FL	675	int ret;
3392c888 FL	676
5b435de0 AS	677	brcmf_dbg(TRACE, "Enter\n");
5b435de0 AS	678
3392c888 FL	679	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	680
	681	if (ret)
	682	brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
5b435de0	683	}
ba89bf19	684	#endif /* CONFIG_BRCMFMAC_SDIO_OOB */