[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.
 */

#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 <linux/platform_data/brcmfmac-sdio.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_43143	43143
#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_DEVICE_ID_BROADCOM_4335	0x4335

#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_43143)},
	{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)},
	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4335)},
	{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);

static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;


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;
}

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_err("enable F2 failed:%d\n",
						  err_ret);
			} else {
				/* Disable Function 2 */
				err_ret = sdio_disable_func(sdfunc);
				if (err_ret)
					brcmf_err("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_err("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(SDIO, "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_err("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_err("Only CMD52 allowed to F0\n");
		return -EINVAL;
	}

	brcmf_dbg(SDIO, "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_err("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_err("Invalid nbytes: %d\n", nbytes);
	}

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

	return err_ret;
}

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_err("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(SDIO, "\n");

	/* Get the Card's common CIS address */
	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
							   SDIO_CCCR_CIS);
	brcmf_dbg(SDIO, "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(SDIO, "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_err("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(SDIO, "\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_err("Failed to set F1 blocksize\n");
		goto out;
	}

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

	brcmf_sdioh_enablefuncs(sdiodev);

out:
	sdio_release_host(sdiodev->func[1]);
	brcmf_dbg(SDIO, "Done\n");
	return err_ret;
}

void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
{
	brcmf_dbg(SDIO, "\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 err;
	struct brcmf_sdio_dev *sdiodev;
	struct brcmf_bus *bus_if;

	brcmf_dbg(SDIO, "Enter\n");
	brcmf_dbg(SDIO, "Class=%x\n", func->class);
	brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
	brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
	brcmf_dbg(SDIO, "Function#: %d\n", func->num);

	/* Consume func num 1 but dont do anything with it. */
	if (func->num == 1)
		return 0;

	/* Ignore anything but func 2 */
	if (func->num != 2)
		return -ENODEV;

	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->card->sdio_func[0];
	sdiodev->func[1] = func->card->sdio_func[0];
	sdiodev->func[2] = func;

	sdiodev->bus_if = bus_if;
	bus_if->bus_priv.sdio = sdiodev;
	dev_set_drvdata(&func->dev, bus_if);
	dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
	sdiodev->dev = &sdiodev->func[1]->dev;
	sdiodev->pdata = brcmfmac_sdio_pdata;

	atomic_set(&sdiodev->suspend, false);
	init_waitqueue_head(&sdiodev->request_byte_wait);
	init_waitqueue_head(&sdiodev->request_word_wait);
	init_waitqueue_head(&sdiodev->request_buffer_wait);

	brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
	err = brcmf_sdio_probe(sdiodev);
	if (err) {
		brcmf_err("F2 error, probe failed %d...\n", err);
		goto fail;
	}
	brcmf_dbg(SDIO, "F2 init completed...\n");
	return 0;

fail:
	dev_set_drvdata(&func->dev, NULL);
	dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
	kfree(sdiodev);
	kfree(bus_if);
	return err;
}

static void brcmf_ops_sdio_remove(struct sdio_func *func)
{
	struct brcmf_bus *bus_if;
	struct brcmf_sdio_dev *sdiodev;

	brcmf_dbg(SDIO, "Enter\n");
	brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
	brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
	brcmf_dbg(SDIO, "Function: %d\n", func->num);

	if (func->num != 1 && func->num != 2)
		return;

	bus_if = dev_get_drvdata(&func->dev);
	if (bus_if) {
		sdiodev = bus_if->bus_priv.sdio;
		brcmf_sdio_remove(sdiodev);

		dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
		dev_set_drvdata(&sdiodev->func[2]->dev, NULL);

		kfree(bus_if);
		kfree(sdiodev);
	}

	brcmf_dbg(SDIO, "Exit\n");
}

#ifdef CONFIG_PM_SLEEP
static int brcmf_sdio_suspend(struct device *dev)
{
	mmc_pm_flag_t sdio_flags;
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
	int ret = 0;

	brcmf_dbg(SDIO, "\n");

	atomic_set(&sdiodev->suspend, true);

	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
		brcmf_err("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_err("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_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;

	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_SDIO_PDATA_NAME,
	.id_table = brcmf_sdmmc_ids,
#ifdef CONFIG_PM_SLEEP
	.drv = {
		.pm = &brcmf_sdio_pm_ops,
	},
#endif	/* CONFIG_PM_SLEEP */
};

static int brcmf_sdio_pd_probe(struct platform_device *pdev)
{
	int ret;

	brcmf_dbg(SDIO, "Enter\n");

	brcmfmac_sdio_pdata = pdev->dev.platform_data;

	if (brcmfmac_sdio_pdata->power_on)
		brcmfmac_sdio_pdata->power_on();

	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	if (ret)
		brcmf_err("sdio_register_driver failed: %d\n", ret);

	return ret;
}

static int brcmf_sdio_pd_remove(struct platform_device *pdev)
{
	brcmf_dbg(SDIO, "Enter\n");

	if (brcmfmac_sdio_pdata->power_off)
		brcmfmac_sdio_pdata->power_off();

	sdio_unregister_driver(&brcmf_sdmmc_driver);

	return 0;
}

static struct platform_driver brcmf_sdio_pd = {
	.remove		= brcmf_sdio_pd_remove,
	.driver		= {
		.name	= BRCMFMAC_SDIO_PDATA_NAME,
		.owner	= THIS_MODULE,
	}
};

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

	if (brcmfmac_sdio_pdata)
		platform_driver_unregister(&brcmf_sdio_pd);
	else
		sdio_unregister_driver(&brcmf_sdmmc_driver);
}

void brcmf_sdio_init(void)
{
	int ret;

	brcmf_dbg(SDIO, "Enter\n");

	ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
	if (ret == -ENODEV) {
		brcmf_dbg(SDIO, "No platform data available, registering without.\n");
		ret = sdio_register_driver(&brcmf_sdmmc_driver);
	}

	if (ret)
		brcmf_err("driver registration failed: %d\n", ret);
}
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	16
5b435de0 AS	17	#include <linux/types.h>
	18	#include <linux/netdevice.h>
	19	#include <linux/mmc/sdio.h>
	20	#include <linux/mmc/core.h>
	21	#include <linux/mmc/sdio_func.h>
	22	#include <linux/mmc/sdio_ids.h>
	23	#include <linux/mmc/card.h>
	24	#include <linux/suspend.h>
	25	#include <linux/errno.h>
	26	#include <linux/sched.h> /* request_irq() */
b7a57e76	27	#include <linux/module.h>
ba89bf19	28	#include <linux/platform_device.h>
668761ac	29	#include <linux/platform_data/brcmfmac-sdio.h>
5b435de0 AS	30	#include <net/cfg80211.h>
	31
	32	#include <defs.h>
	33	#include <brcm_hw_ids.h>
	34	#include <brcmu_utils.h>
	35	#include <brcmu_wifi.h>
	36	#include "sdio_host.h"
5b435de0	37	#include "dhd_dbg.h"
a8a363ac	38	#include "dhd_bus.h"
5b435de0 AS	39
	40	#define SDIO_VENDOR_ID_BROADCOM 0x02d0
	41
	42	#define DMA_ALIGN_MASK 0x03
	43
369508c5	44	#define SDIO_DEVICE_ID_BROADCOM_43143 43143
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
6a1c7483	49	#define SDIO_DEVICE_ID_BROADCOM_4335 0x4335
5b435de0 AS	50
	51	#define SDIO_FUNC1_BLOCKSIZE 64
	52	#define SDIO_FUNC2_BLOCKSIZE 512
	53
	54	/* devices we support, null terminated */
	55	static const struct sdio_device_id brcmf_sdmmc_ids[] = {
369508c5	56	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
4a1c02ce	57	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
5b435de0	58	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
ce2d7d7e	59	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
85a4a1c3	60	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
6a1c7483	61	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4335)},
5b435de0 AS	62	{ /* end: all zeroes */ },
	63	};
	64	MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
	65
668761ac HM	66	static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
668761ac HM	67
ba89bf19	68
78b3f1c5	69	bool
5b435de0 AS	70	brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
	71	{
	72	bool is_err = false;
	73	#ifdef CONFIG_PM_SLEEP
	74	is_err = atomic_read(&sdiodev->suspend);
	75	#endif
	76	return is_err;
	77	}
	78
78b3f1c5	79	void
5b435de0 AS	80	brcmf_pm_resume_wait(struct brcmf_sdio_dev sdiodev, wait_queue_head_t wq)
	81	{
	82	#ifdef CONFIG_PM_SLEEP
	83	int retry = 0;
	84	while (atomic_read(&sdiodev->suspend) && retry++ != 30)
	85	wait_event_timeout(*wq, false, HZ/100);
	86	#endif
	87	}
	88
	89	static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
	90	uint regaddr, u8 *byte)
	91	{
	92	struct sdio_func *sdfunc = sdiodev->func[0];
	93	int err_ret;
	94
	95	/*
	96	* Can only directly write to some F0 registers.
	97	* Handle F2 enable/disable and Abort command
	98	* as a special case.
	99	*/
	100	if (regaddr == SDIO_CCCR_IOEx) {
	101	sdfunc = sdiodev->func[2];
	102	if (sdfunc) {
5b435de0 AS	103	if (*byte & SDIO_FUNC_ENABLE_2) {
	104	/* Enable Function 2 */
	105	err_ret = sdio_enable_func(sdfunc);
	106	if (err_ret)
5e8149f5	107	brcmf_err("enable F2 failed:%d\n",
5b435de0 AS	108	err_ret);
	109	} else {
	110	/* Disable Function 2 */
	111	err_ret = sdio_disable_func(sdfunc);
	112	if (err_ret)
5e8149f5	113	brcmf_err("Disable F2 failed:%d\n",
5b435de0 AS	114	err_ret);
5b435de0 AS	115	}
5b435de0	116	}
ba89bf19 FL	117	} else if ((regaddr == SDIO_CCCR_ABORT) \|\|
ba89bf19 FL	118	(regaddr == SDIO_CCCR_IENx)) {
1cc26990 FL	119	sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
	120	GFP_KERNEL);
	121	if (!sdfunc)
	122	return -ENOMEM;
	123	sdfunc->num = 0;
5b435de0	124	sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
1cc26990	125	kfree(sdfunc);
5b435de0	126	} else if (regaddr < 0xF0) {
5e8149f5	127	brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
5b435de0 AS	128	err_ret = -EPERM;
5b435de0 AS	129	} else {
5b435de0	130	sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
5b435de0 AS	131	}
	132
	133	return err_ret;
	134	}
	135
	136	int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
	137	uint regaddr, u8 *byte)
	138	{
	139	int err_ret;
	140
c3203374	141	brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
5b435de0 AS	142
	143	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
	144	if (brcmf_pm_resume_error(sdiodev))
	145	return -EIO;
	146
	147	if (rw && func == 0) {
	148	/* handle F0 separately */
	149	err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
	150	} else {
5b435de0 AS	151	if (rw) /* CMD52 Write */
	152	sdio_writeb(sdiodev->func[func], *byte, regaddr,
	153	&err_ret);
	154	else if (func == 0) {
	155	*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
	156	&err_ret);
	157	} else {
	158	*byte = sdio_readb(sdiodev->func[func], regaddr,
	159	&err_ret);
	160	}
5b435de0 AS	161	}
	162
	163	if (err_ret)
5e8149f5	164	brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
5b435de0 AS	165	rw ? "write" : "read", func, regaddr, *byte, err_ret);
	166
	167	return err_ret;
	168	}
	169
	170	int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
	171	uint rw, uint func, uint addr, u32 *word,
	172	uint nbytes)
	173	{
	174	int err_ret = -EIO;
	175
	176	if (func == 0) {
5e8149f5	177	brcmf_err("Only CMD52 allowed to F0\n");
5b435de0 AS	178	return -EINVAL;
	179	}
	180
c3203374	181	brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
5b435de0 AS	182	rw, func, addr, nbytes);
	183
	184	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
	185	if (brcmf_pm_resume_error(sdiodev))
	186	return -EIO;
5b435de0 AS	187
	188	if (rw) { /* CMD52 Write */
	189	if (nbytes == 4)
	190	sdio_writel(sdiodev->func[func], *word, addr,
	191	&err_ret);
	192	else if (nbytes == 2)
	193	sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
	194	addr, &err_ret);
	195	else
5e8149f5	196	brcmf_err("Invalid nbytes: %d\n", nbytes);
5b435de0 AS	197	} else { /* CMD52 Read */
	198	if (nbytes == 4)
	199	*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
	200	else if (nbytes == 2)
	201	*word = sdio_readw(sdiodev->func[func], addr,
	202	&err_ret) & 0xFFFF;
	203	else
5e8149f5	204	brcmf_err("Invalid nbytes: %d\n", nbytes);
5b435de0 AS	205	}
5b435de0 AS	206
5b435de0	207	if (err_ret)
5e8149f5	208	brcmf_err("Failed to %s word, Err: 0x%08x\n",
5b435de0 AS	209	rw ? "write" : "read", err_ret);
	210
	211	return err_ret;
	212	}
	213
5b435de0 AS	214	static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
	215	{
	216	/* read 24 bits and return valid 17 bit addr */
d8b3fc59	217	int i, ret;
5b435de0 AS	218	u32 scratch, regdata;
	219	__le32 scratch_le;
	220	u8 ptr = (u8 )&scratch_le;
	221
	222	for (i = 0; i < 3; i++) {
d8b3fc59 FL	223	regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
d8b3fc59 FL	224	if (ret != 0)
5e8149f5	225	brcmf_err("Can't read!\n");
5b435de0 AS	226
	227	*ptr++ = (u8) regdata;
	228	regaddr++;
	229	}
	230
	231	/* Only the lower 17-bits are valid */
	232	scratch = le32_to_cpu(scratch_le);
	233	scratch &= 0x0001FFFF;
	234	return scratch;
	235	}
	236
	237	static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
	238	{
	239	int err_ret;
	240	u32 fbraddr;
	241	u8 func;
	242
c3203374	243	brcmf_dbg(SDIO, "\n");
5b435de0 AS	244
	245	/* Get the Card's common CIS address */
	246	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
	247	SDIO_CCCR_CIS);
c3203374	248	brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
5b435de0 AS	249	sdiodev->func_cis_ptr[0]);
	250
	251	/* Get the Card's function CIS (for each function) */
	252	for (fbraddr = SDIO_FBR_BASE(1), func = 1;
	253	func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
	254	sdiodev->func_cis_ptr[func] =
	255	brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
c3203374	256	brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
5b435de0 AS	257	func, sdiodev->func_cis_ptr[func]);
	258	}
	259
	260	/* Enable Function 1 */
5b435de0	261	err_ret = sdio_enable_func(sdiodev->func[1]);
5b435de0	262	if (err_ret)
5e8149f5	263	brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
5b435de0 AS	264
	265	return false;
	266	}
	267
	268	/*
	269	* Public entry points & extern's
	270	*/
	271	int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
	272	{
	273	int err_ret = 0;
	274
c3203374	275	brcmf_dbg(SDIO, "\n");
5b435de0 AS	276
	277	sdiodev->num_funcs = 2;
	278
	279	sdio_claim_host(sdiodev->func[1]);
38b0b0dd	280
5b435de0	281	err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
5b435de0	282	if (err_ret) {
5e8149f5	283	brcmf_err("Failed to set F1 blocksize\n");
5b435de0 AS	284	goto out;
	285	}
	286
5b435de0	287	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
5b435de0	288	if (err_ret) {
5e8149f5	289	brcmf_err("Failed to set F2 blocksize\n");
5b435de0 AS	290	goto out;
	291	}
	292
	293	brcmf_sdioh_enablefuncs(sdiodev);
	294
	295	out:
38b0b0dd	296	sdio_release_host(sdiodev->func[1]);
c3203374	297	brcmf_dbg(SDIO, "Done\n");
5b435de0 AS	298	return err_ret;
	299	}
	300
	301	void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
	302	{
c3203374	303	brcmf_dbg(SDIO, "\n");
5b435de0 AS	304
	305	/* Disable Function 2 */
	306	sdio_claim_host(sdiodev->func[2]);
	307	sdio_disable_func(sdiodev->func[2]);
	308	sdio_release_host(sdiodev->func[2]);
	309
	310	/* Disable Function 1 */
	311	sdio_claim_host(sdiodev->func[1]);
	312	sdio_disable_func(sdiodev->func[1]);
	313	sdio_release_host(sdiodev->func[1]);
	314
	315	}
	316
	317	static int brcmf_ops_sdio_probe(struct sdio_func *func,
5b3c1832	318	const struct sdio_device_id *id)
5b435de0	319	{
5b3c1832	320	int err;
5b435de0	321	struct brcmf_sdio_dev *sdiodev;
655713be	322	struct brcmf_bus *bus_if;
ba89bf19	323
c3203374 AS	324	brcmf_dbg(SDIO, "Enter\n");
	325	brcmf_dbg(SDIO, "Class=%x\n", func->class);
	326	brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
	327	brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
	328	brcmf_dbg(SDIO, "Function#: %d\n", func->num);
5b3c1832 HM	329
	330	/* Consume func num 1 but dont do anything with it. */
	331	if (func->num == 1)
	332	return 0;
	333
	334	/* Ignore anything but func 2 */
	335	if (func->num != 2)
	336	return -ENODEV;
	337
	338	bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
	339	if (!bus_if)
	340	return -ENOMEM;
	341	sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
	342	if (!sdiodev) {
	343	kfree(bus_if);
	344	return -ENOMEM;
5b435de0 AS	345	}
5b435de0 AS	346
5b3c1832 HM	347	sdiodev->func[0] = func->card->sdio_func[0];
	348	sdiodev->func[1] = func->card->sdio_func[0];
	349	sdiodev->func[2] = func;
	350
	351	sdiodev->bus_if = bus_if;
	352	bus_if->bus_priv.sdio = sdiodev;
5b3c1832 HM	353	dev_set_drvdata(&func->dev, bus_if);
	354	dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
	355	sdiodev->dev = &sdiodev->func[1]->dev;
668761ac	356	sdiodev->pdata = brcmfmac_sdio_pdata;
5b3c1832 HM	357
	358	atomic_set(&sdiodev->suspend, false);
	359	init_waitqueue_head(&sdiodev->request_byte_wait);
	360	init_waitqueue_head(&sdiodev->request_word_wait);
5b3c1832	361	init_waitqueue_head(&sdiodev->request_buffer_wait);
5b3c1832	362
c3203374	363	brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
5b3c1832 HM	364	err = brcmf_sdio_probe(sdiodev);
5b3c1832 HM	365	if (err) {
5e8149f5	366	brcmf_err("F2 error, probe failed %d...\n", err);
5b3c1832	367	goto fail;
5b435de0	368	}
c3203374	369	brcmf_dbg(SDIO, "F2 init completed...\n");
5b3c1832	370	return 0;
5b435de0	371
5b3c1832 HM	372	fail:
	373	dev_set_drvdata(&func->dev, NULL);
	374	dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
	375	kfree(sdiodev);
	376	kfree(bus_if);
	377	return err;
5b435de0 AS	378	}
	379
	380	static void brcmf_ops_sdio_remove(struct sdio_func *func)
	381	{
655713be	382	struct brcmf_bus *bus_if;
5b435de0	383	struct brcmf_sdio_dev *sdiodev;
5b3c1832	384
c3203374 AS	385	brcmf_dbg(SDIO, "Enter\n");
	386	brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
	387	brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
	388	brcmf_dbg(SDIO, "Function: %d\n", func->num);
5b435de0	389
5b3c1832 HM	390	if (func->num != 1 && func->num != 2)
	391	return;
	392
	393	bus_if = dev_get_drvdata(&func->dev);
	394	if (bus_if) {
0a332e46	395	sdiodev = bus_if->bus_priv.sdio;
5b435de0	396	brcmf_sdio_remove(sdiodev);
5b3c1832 HM	397
	398	dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
	399	dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
	400
655713be	401	kfree(bus_if);
5b435de0 AS	402	kfree(sdiodev);
5b435de0 AS	403	}
5b3c1832	404
c3203374	405	brcmf_dbg(SDIO, "Exit\n");
5b435de0 AS	406	}
	407
	408	#ifdef CONFIG_PM_SLEEP
	409	static int brcmf_sdio_suspend(struct device *dev)
	410	{
	411	mmc_pm_flag_t sdio_flags;
5b3c1832 HM	412	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
5b3c1832 HM	413	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0 AS	414	int ret = 0;
5b435de0 AS	415
c3203374	416	brcmf_dbg(SDIO, "\n");
5b435de0	417
5b435de0 AS	418	atomic_set(&sdiodev->suspend, true);
	419
	420	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
	421	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
5e8149f5	422	brcmf_err("Host can't keep power while suspended\n");
5b435de0 AS	423	return -EINVAL;
	424	}
	425
	426	ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
	427	if (ret) {
5e8149f5	428	brcmf_err("Failed to set pm_flags\n");
5b435de0 AS	429	return ret;
	430	}
	431
	432	brcmf_sdio_wdtmr_enable(sdiodev, false);
	433
	434	return ret;
	435	}
	436
	437	static int brcmf_sdio_resume(struct device *dev)
	438	{
5b3c1832 HM	439	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
5b3c1832 HM	440	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0	441
5b435de0 AS	442	brcmf_sdio_wdtmr_enable(sdiodev, true);
	443	atomic_set(&sdiodev->suspend, false);
	444	return 0;
	445	}
	446
	447	static const struct dev_pm_ops brcmf_sdio_pm_ops = {
	448	.suspend = brcmf_sdio_suspend,
	449	.resume = brcmf_sdio_resume,
	450	};
	451	#endif /* CONFIG_PM_SLEEP */
	452
	453	static struct sdio_driver brcmf_sdmmc_driver = {
	454	.probe = brcmf_ops_sdio_probe,
	455	.remove = brcmf_ops_sdio_remove,
668761ac	456	.name = BRCMFMAC_SDIO_PDATA_NAME,
5b435de0 AS	457	.id_table = brcmf_sdmmc_ids,
	458	#ifdef CONFIG_PM_SLEEP
	459	.drv = {
	460	.pm = &brcmf_sdio_pm_ops,
	461	},
	462	#endif /* CONFIG_PM_SLEEP */
	463	};
	464
ba89bf19 FL	465	static int brcmf_sdio_pd_probe(struct platform_device *pdev)
ba89bf19 FL	466	{
668761ac	467	int ret;
ba89bf19	468
668761ac	469	brcmf_dbg(SDIO, "Enter\n");
ba89bf19	470
668761ac	471	brcmfmac_sdio_pdata = pdev->dev.platform_data;
ba89bf19	472
668761ac HM	473	if (brcmfmac_sdio_pdata->power_on)
668761ac HM	474	brcmfmac_sdio_pdata->power_on();
ba89bf19 FL	475
ba89bf19 FL	476	ret = sdio_register_driver(&brcmf_sdmmc_driver);
ba89bf19	477	if (ret)
5e8149f5	478	brcmf_err("sdio_register_driver failed: %d\n", ret);
ba89bf19 FL	479
	480	return ret;
	481	}
	482
668761ac	483	static int brcmf_sdio_pd_remove(struct platform_device *pdev)
ba89bf19	484	{
c3203374	485	brcmf_dbg(SDIO, "Enter\n");
ba89bf19	486
668761ac HM	487	if (brcmfmac_sdio_pdata->power_off)
	488	brcmfmac_sdio_pdata->power_off();
	489
ba89bf19 FL	490	sdio_unregister_driver(&brcmf_sdmmc_driver);
ba89bf19 FL	491
668761ac	492	return 0;
ba89bf19 FL	493	}
ba89bf19 FL	494
668761ac HM	495	static struct platform_driver brcmf_sdio_pd = {
	496	.remove = brcmf_sdio_pd_remove,
	497	.driver = {
f91f5f05 LC	498	.name = BRCMFMAC_SDIO_PDATA_NAME,
f91f5f05 LC	499	.owner = THIS_MODULE,
668761ac HM	500	}
668761ac HM	501	};
ba89bf19	502
f3d7cdc3	503	void brcmf_sdio_exit(void)
5b435de0	504	{
c3203374	505	brcmf_dbg(SDIO, "Enter\n");
5b435de0	506
668761ac HM	507	if (brcmfmac_sdio_pdata)
	508	platform_driver_unregister(&brcmf_sdio_pd);
	509	else
	510	sdio_unregister_driver(&brcmf_sdmmc_driver);
5b435de0 AS	511	}
5b435de0 AS	512
549040ab	513	void brcmf_sdio_init(void)
5b435de0	514	{
3392c888 FL	515	int ret;
3392c888 FL	516
c3203374	517	brcmf_dbg(SDIO, "Enter\n");
5b435de0	518
668761ac HM	519	ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
	520	if (ret == -ENODEV) {
	521	brcmf_dbg(SDIO, "No platform data available, registering without.\n");
	522	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	523	}
3392c888 FL	524
3392c888 FL	525	if (ret)
668761ac	526	brcmf_err("driver registration failed: %d\n", ret);
5b435de0	527	}