[mirror_ubuntu-zesty-kernel.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 "sdio_chip.h"
#include "dhd_dbg.h"
#include "dhd_bus.h"

#define SDIO_VENDOR_ID_BROADCOM		0x02d0

#define DMA_ALIGN_MASK	0x03

#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_4339)},
	{ /* 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 = dev_get_platdata(&pdev->dev);

	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"
fe040158	37	#include "sdio_chip.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
5b435de0 AS	45	#define SDIO_FUNC1_BLOCKSIZE 64
	46	#define SDIO_FUNC2_BLOCKSIZE 512
	47
	48	/* devices we support, null terminated */
	49	static const struct sdio_device_id brcmf_sdmmc_ids[] = {
369508c5	50	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
4a1c02ce	51	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
5b435de0	52	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
ce2d7d7e	53	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
85a4a1c3	54	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
fe040158 FL	55	{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
fe040158 FL	56	SDIO_DEVICE_ID_BROADCOM_4335_4339)},
5b435de0 AS	57	{ /* end: all zeroes */ },
	58	};
	59	MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
	60
668761ac HM	61	static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
668761ac HM	62
ba89bf19	63
78b3f1c5	64	bool
5b435de0 AS	65	brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
	66	{
	67	bool is_err = false;
	68	#ifdef CONFIG_PM_SLEEP
	69	is_err = atomic_read(&sdiodev->suspend);
	70	#endif
	71	return is_err;
	72	}
	73
78b3f1c5	74	void
5b435de0 AS	75	brcmf_pm_resume_wait(struct brcmf_sdio_dev sdiodev, wait_queue_head_t wq)
	76	{
	77	#ifdef CONFIG_PM_SLEEP
	78	int retry = 0;
	79	while (atomic_read(&sdiodev->suspend) && retry++ != 30)
	80	wait_event_timeout(*wq, false, HZ/100);
	81	#endif
	82	}
	83
	84	static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
	85	uint regaddr, u8 *byte)
	86	{
	87	struct sdio_func *sdfunc = sdiodev->func[0];
	88	int err_ret;
	89
	90	/*
	91	* Can only directly write to some F0 registers.
	92	* Handle F2 enable/disable and Abort command
	93	* as a special case.
	94	*/
	95	if (regaddr == SDIO_CCCR_IOEx) {
	96	sdfunc = sdiodev->func[2];
	97	if (sdfunc) {
5b435de0 AS	98	if (*byte & SDIO_FUNC_ENABLE_2) {
	99	/* Enable Function 2 */
	100	err_ret = sdio_enable_func(sdfunc);
	101	if (err_ret)
5e8149f5	102	brcmf_err("enable F2 failed:%d\n",
5b435de0 AS	103	err_ret);
	104	} else {
	105	/* Disable Function 2 */
	106	err_ret = sdio_disable_func(sdfunc);
	107	if (err_ret)
5e8149f5	108	brcmf_err("Disable F2 failed:%d\n",
5b435de0 AS	109	err_ret);
5b435de0 AS	110	}
5b435de0	111	}
ba89bf19 FL	112	} else if ((regaddr == SDIO_CCCR_ABORT) \|\|
ba89bf19 FL	113	(regaddr == SDIO_CCCR_IENx)) {
1cc26990 FL	114	sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
	115	GFP_KERNEL);
	116	if (!sdfunc)
	117	return -ENOMEM;
	118	sdfunc->num = 0;
5b435de0	119	sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
1cc26990	120	kfree(sdfunc);
5b435de0	121	} else if (regaddr < 0xF0) {
5e8149f5	122	brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
5b435de0 AS	123	err_ret = -EPERM;
5b435de0 AS	124	} else {
5b435de0	125	sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
5b435de0 AS	126	}
	127
	128	return err_ret;
	129	}
	130
	131	int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
	132	uint regaddr, u8 *byte)
	133	{
	134	int err_ret;
	135
c3203374	136	brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
5b435de0 AS	137
	138	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
	139	if (brcmf_pm_resume_error(sdiodev))
	140	return -EIO;
	141
	142	if (rw && func == 0) {
	143	/* handle F0 separately */
	144	err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
	145	} else {
5b435de0 AS	146	if (rw) /* CMD52 Write */
	147	sdio_writeb(sdiodev->func[func], *byte, regaddr,
	148	&err_ret);
	149	else if (func == 0) {
	150	*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
	151	&err_ret);
	152	} else {
	153	*byte = sdio_readb(sdiodev->func[func], regaddr,
	154	&err_ret);
	155	}
5b435de0 AS	156	}
	157
	158	if (err_ret)
5e8149f5	159	brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
5b435de0 AS	160	rw ? "write" : "read", func, regaddr, *byte, err_ret);
	161
	162	return err_ret;
	163	}
	164
	165	int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
	166	uint rw, uint func, uint addr, u32 *word,
	167	uint nbytes)
	168	{
	169	int err_ret = -EIO;
	170
	171	if (func == 0) {
5e8149f5	172	brcmf_err("Only CMD52 allowed to F0\n");
5b435de0 AS	173	return -EINVAL;
	174	}
	175
c3203374	176	brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
5b435de0 AS	177	rw, func, addr, nbytes);
	178
	179	brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
	180	if (brcmf_pm_resume_error(sdiodev))
	181	return -EIO;
5b435de0 AS	182
	183	if (rw) { /* CMD52 Write */
	184	if (nbytes == 4)
	185	sdio_writel(sdiodev->func[func], *word, addr,
	186	&err_ret);
	187	else if (nbytes == 2)
	188	sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
	189	addr, &err_ret);
	190	else
5e8149f5	191	brcmf_err("Invalid nbytes: %d\n", nbytes);
5b435de0 AS	192	} else { /* CMD52 Read */
	193	if (nbytes == 4)
	194	*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
	195	else if (nbytes == 2)
	196	*word = sdio_readw(sdiodev->func[func], addr,
	197	&err_ret) & 0xFFFF;
	198	else
5e8149f5	199	brcmf_err("Invalid nbytes: %d\n", nbytes);
5b435de0 AS	200	}
5b435de0 AS	201
5b435de0	202	if (err_ret)
5e8149f5	203	brcmf_err("Failed to %s word, Err: 0x%08x\n",
5b435de0 AS	204	rw ? "write" : "read", err_ret);
	205
	206	return err_ret;
	207	}
	208
5b435de0 AS	209	static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
	210	{
	211	/* read 24 bits and return valid 17 bit addr */
d8b3fc59	212	int i, ret;
5b435de0 AS	213	u32 scratch, regdata;
	214	__le32 scratch_le;
	215	u8 ptr = (u8 )&scratch_le;
	216
	217	for (i = 0; i < 3; i++) {
d8b3fc59 FL	218	regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
d8b3fc59 FL	219	if (ret != 0)
5e8149f5	220	brcmf_err("Can't read!\n");
5b435de0 AS	221
	222	*ptr++ = (u8) regdata;
	223	regaddr++;
	224	}
	225
	226	/* Only the lower 17-bits are valid */
	227	scratch = le32_to_cpu(scratch_le);
	228	scratch &= 0x0001FFFF;
	229	return scratch;
	230	}
	231
	232	static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
	233	{
	234	int err_ret;
	235	u32 fbraddr;
	236	u8 func;
	237
c3203374	238	brcmf_dbg(SDIO, "\n");
5b435de0 AS	239
	240	/* Get the Card's common CIS address */
	241	sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
	242	SDIO_CCCR_CIS);
c3203374	243	brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
5b435de0 AS	244	sdiodev->func_cis_ptr[0]);
	245
	246	/* Get the Card's function CIS (for each function) */
	247	for (fbraddr = SDIO_FBR_BASE(1), func = 1;
	248	func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
	249	sdiodev->func_cis_ptr[func] =
	250	brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
c3203374	251	brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
5b435de0 AS	252	func, sdiodev->func_cis_ptr[func]);
	253	}
	254
	255	/* Enable Function 1 */
5b435de0	256	err_ret = sdio_enable_func(sdiodev->func[1]);
5b435de0	257	if (err_ret)
5e8149f5	258	brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
5b435de0 AS	259
	260	return false;
	261	}
	262
	263	/*
	264	* Public entry points & extern's
	265	*/
	266	int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
	267	{
	268	int err_ret = 0;
	269
c3203374	270	brcmf_dbg(SDIO, "\n");
5b435de0 AS	271
	272	sdiodev->num_funcs = 2;
	273
	274	sdio_claim_host(sdiodev->func[1]);
38b0b0dd	275
5b435de0	276	err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
5b435de0	277	if (err_ret) {
5e8149f5	278	brcmf_err("Failed to set F1 blocksize\n");
5b435de0 AS	279	goto out;
	280	}
	281
5b435de0	282	err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
5b435de0	283	if (err_ret) {
5e8149f5	284	brcmf_err("Failed to set F2 blocksize\n");
5b435de0 AS	285	goto out;
	286	}
	287
	288	brcmf_sdioh_enablefuncs(sdiodev);
	289
	290	out:
38b0b0dd	291	sdio_release_host(sdiodev->func[1]);
c3203374	292	brcmf_dbg(SDIO, "Done\n");
5b435de0 AS	293	return err_ret;
	294	}
	295
	296	void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
	297	{
c3203374	298	brcmf_dbg(SDIO, "\n");
5b435de0 AS	299
	300	/* Disable Function 2 */
	301	sdio_claim_host(sdiodev->func[2]);
	302	sdio_disable_func(sdiodev->func[2]);
	303	sdio_release_host(sdiodev->func[2]);
	304
	305	/* Disable Function 1 */
	306	sdio_claim_host(sdiodev->func[1]);
	307	sdio_disable_func(sdiodev->func[1]);
	308	sdio_release_host(sdiodev->func[1]);
	309
	310	}
	311
	312	static int brcmf_ops_sdio_probe(struct sdio_func *func,
5b3c1832	313	const struct sdio_device_id *id)
5b435de0	314	{
5b3c1832	315	int err;
5b435de0	316	struct brcmf_sdio_dev *sdiodev;
655713be	317	struct brcmf_bus *bus_if;
ba89bf19	318
c3203374 AS	319	brcmf_dbg(SDIO, "Enter\n");
	320	brcmf_dbg(SDIO, "Class=%x\n", func->class);
	321	brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
	322	brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
	323	brcmf_dbg(SDIO, "Function#: %d\n", func->num);
5b3c1832 HM	324
	325	/* Consume func num 1 but dont do anything with it. */
	326	if (func->num == 1)
	327	return 0;
	328
	329	/* Ignore anything but func 2 */
	330	if (func->num != 2)
	331	return -ENODEV;
	332
	333	bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
	334	if (!bus_if)
	335	return -ENOMEM;
	336	sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
	337	if (!sdiodev) {
	338	kfree(bus_if);
	339	return -ENOMEM;
5b435de0 AS	340	}
5b435de0 AS	341
5b3c1832 HM	342	sdiodev->func[0] = func->card->sdio_func[0];
	343	sdiodev->func[1] = func->card->sdio_func[0];
	344	sdiodev->func[2] = func;
	345
	346	sdiodev->bus_if = bus_if;
	347	bus_if->bus_priv.sdio = sdiodev;
5b3c1832 HM	348	dev_set_drvdata(&func->dev, bus_if);
	349	dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
	350	sdiodev->dev = &sdiodev->func[1]->dev;
668761ac	351	sdiodev->pdata = brcmfmac_sdio_pdata;
5b3c1832 HM	352
	353	atomic_set(&sdiodev->suspend, false);
	354	init_waitqueue_head(&sdiodev->request_byte_wait);
	355	init_waitqueue_head(&sdiodev->request_word_wait);
5b3c1832	356	init_waitqueue_head(&sdiodev->request_buffer_wait);
5b3c1832	357
c3203374	358	brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
5b3c1832 HM	359	err = brcmf_sdio_probe(sdiodev);
5b3c1832 HM	360	if (err) {
5e8149f5	361	brcmf_err("F2 error, probe failed %d...\n", err);
5b3c1832	362	goto fail;
5b435de0	363	}
c3203374	364	brcmf_dbg(SDIO, "F2 init completed...\n");
5b3c1832	365	return 0;
5b435de0	366
5b3c1832 HM	367	fail:
	368	dev_set_drvdata(&func->dev, NULL);
	369	dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
	370	kfree(sdiodev);
	371	kfree(bus_if);
	372	return err;
5b435de0 AS	373	}
	374
	375	static void brcmf_ops_sdio_remove(struct sdio_func *func)
	376	{
655713be	377	struct brcmf_bus *bus_if;
5b435de0	378	struct brcmf_sdio_dev *sdiodev;
5b3c1832	379
c3203374 AS	380	brcmf_dbg(SDIO, "Enter\n");
	381	brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
	382	brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
	383	brcmf_dbg(SDIO, "Function: %d\n", func->num);
5b435de0	384
5b3c1832 HM	385	if (func->num != 1 && func->num != 2)
	386	return;
	387
	388	bus_if = dev_get_drvdata(&func->dev);
	389	if (bus_if) {
0a332e46	390	sdiodev = bus_if->bus_priv.sdio;
5b435de0	391	brcmf_sdio_remove(sdiodev);
5b3c1832 HM	392
	393	dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
	394	dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
	395
655713be	396	kfree(bus_if);
5b435de0 AS	397	kfree(sdiodev);
5b435de0 AS	398	}
5b3c1832	399
c3203374	400	brcmf_dbg(SDIO, "Exit\n");
5b435de0 AS	401	}
	402
	403	#ifdef CONFIG_PM_SLEEP
	404	static int brcmf_sdio_suspend(struct device *dev)
	405	{
	406	mmc_pm_flag_t sdio_flags;
5b3c1832 HM	407	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
5b3c1832 HM	408	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0 AS	409	int ret = 0;
5b435de0 AS	410
c3203374	411	brcmf_dbg(SDIO, "\n");
5b435de0	412
5b435de0 AS	413	atomic_set(&sdiodev->suspend, true);
	414
	415	sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
	416	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
5e8149f5	417	brcmf_err("Host can't keep power while suspended\n");
5b435de0 AS	418	return -EINVAL;
	419	}
	420
	421	ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
	422	if (ret) {
5e8149f5	423	brcmf_err("Failed to set pm_flags\n");
5b435de0 AS	424	return ret;
	425	}
	426
	427	brcmf_sdio_wdtmr_enable(sdiodev, false);
	428
	429	return ret;
	430	}
	431
	432	static int brcmf_sdio_resume(struct device *dev)
	433	{
5b3c1832 HM	434	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
5b3c1832 HM	435	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0	436
5b435de0 AS	437	brcmf_sdio_wdtmr_enable(sdiodev, true);
	438	atomic_set(&sdiodev->suspend, false);
	439	return 0;
	440	}
	441
	442	static const struct dev_pm_ops brcmf_sdio_pm_ops = {
	443	.suspend = brcmf_sdio_suspend,
	444	.resume = brcmf_sdio_resume,
	445	};
	446	#endif /* CONFIG_PM_SLEEP */
	447
	448	static struct sdio_driver brcmf_sdmmc_driver = {
	449	.probe = brcmf_ops_sdio_probe,
	450	.remove = brcmf_ops_sdio_remove,
668761ac	451	.name = BRCMFMAC_SDIO_PDATA_NAME,
5b435de0 AS	452	.id_table = brcmf_sdmmc_ids,
	453	#ifdef CONFIG_PM_SLEEP
	454	.drv = {
	455	.pm = &brcmf_sdio_pm_ops,
	456	},
	457	#endif /* CONFIG_PM_SLEEP */
	458	};
	459
ba89bf19 FL	460	static int brcmf_sdio_pd_probe(struct platform_device *pdev)
ba89bf19 FL	461	{
668761ac	462	int ret;
ba89bf19	463
668761ac	464	brcmf_dbg(SDIO, "Enter\n");
ba89bf19	465
f4116702	466	brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
ba89bf19	467
668761ac HM	468	if (brcmfmac_sdio_pdata->power_on)
668761ac HM	469	brcmfmac_sdio_pdata->power_on();
ba89bf19 FL	470
ba89bf19 FL	471	ret = sdio_register_driver(&brcmf_sdmmc_driver);
ba89bf19	472	if (ret)
5e8149f5	473	brcmf_err("sdio_register_driver failed: %d\n", ret);
ba89bf19 FL	474
	475	return ret;
	476	}
	477
668761ac	478	static int brcmf_sdio_pd_remove(struct platform_device *pdev)
ba89bf19	479	{
c3203374	480	brcmf_dbg(SDIO, "Enter\n");
ba89bf19	481
668761ac HM	482	if (brcmfmac_sdio_pdata->power_off)
	483	brcmfmac_sdio_pdata->power_off();
	484
ba89bf19 FL	485	sdio_unregister_driver(&brcmf_sdmmc_driver);
ba89bf19 FL	486
668761ac	487	return 0;
ba89bf19 FL	488	}
ba89bf19 FL	489
668761ac HM	490	static struct platform_driver brcmf_sdio_pd = {
	491	.remove = brcmf_sdio_pd_remove,
	492	.driver = {
f91f5f05 LC	493	.name = BRCMFMAC_SDIO_PDATA_NAME,
f91f5f05 LC	494	.owner = THIS_MODULE,
668761ac HM	495	}
668761ac HM	496	};
ba89bf19	497
f3d7cdc3	498	void brcmf_sdio_exit(void)
5b435de0	499	{
c3203374	500	brcmf_dbg(SDIO, "Enter\n");
5b435de0	501
668761ac HM	502	if (brcmfmac_sdio_pdata)
	503	platform_driver_unregister(&brcmf_sdio_pd);
	504	else
	505	sdio_unregister_driver(&brcmf_sdmmc_driver);
5b435de0 AS	506	}
5b435de0 AS	507
549040ab	508	void brcmf_sdio_init(void)
5b435de0	509	{
3392c888 FL	510	int ret;
3392c888 FL	511
c3203374	512	brcmf_dbg(SDIO, "Enter\n");
5b435de0	513
668761ac HM	514	ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
	515	if (ret == -ENODEV) {
	516	brcmf_dbg(SDIO, "No platform data available, registering without.\n");
	517	ret = sdio_register_driver(&brcmf_sdmmc_driver);
	518	}
3392c888 FL	519
3392c888 FL	520	if (ret)
668761ac	521	brcmf_err("driver registration failed: %d\n", ret);
5b435de0	522	}