[linux-2.6-block.git] / drivers / mmc / host / sdhci-acpi.c

/*
 * Secure Digital Host Controller Interface ACPI driver.
 *
 * Copyright (c) 2012, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

#include <linux/init.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/compiler.h>
#include <linux/stddef.h>
#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/acpi.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/delay.h>

#include <linux/mmc/host.h>
#include <linux/mmc/pm.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/mmc/sdhci.h>

#include "sdhci.h"

enum {
	SDHCI_ACPI_SD_CD		= BIT(0),
	SDHCI_ACPI_RUNTIME_PM		= BIT(1),
	SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL	= BIT(2),
};

struct sdhci_acpi_chip {
	const struct	sdhci_ops *ops;
	unsigned int	quirks;
	unsigned int	quirks2;
	unsigned long	caps;
	unsigned int	caps2;
	mmc_pm_flag_t	pm_caps;
};

struct sdhci_acpi_slot {
	const struct	sdhci_acpi_chip *chip;
	unsigned int	quirks;
	unsigned int	quirks2;
	unsigned long	caps;
	unsigned int	caps2;
	mmc_pm_flag_t	pm_caps;
	unsigned int	flags;
	int (*probe_slot)(struct platform_device *, const char *, const char *);
	int (*remove_slot)(struct platform_device *);
};

struct sdhci_acpi_host {
	struct sdhci_host		*host;
	const struct sdhci_acpi_slot	*slot;
	struct platform_device		*pdev;
	bool				use_runtime_pm;
	bool				dma_setup;
};

static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag)
{
	return c->slot && (c->slot->flags & flag);
}

static int sdhci_acpi_enable_dma(struct sdhci_host *host)
{
	struct sdhci_acpi_host *c = sdhci_priv(host);
	struct device *dev = &c->pdev->dev;
	int err = -1;

	if (c->dma_setup)
		return 0;

	if (host->flags & SDHCI_USE_64_BIT_DMA) {
		if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA) {
			host->flags &= ~SDHCI_USE_64_BIT_DMA;
		} else {
			err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
			if (err)
				dev_warn(dev, "Failed to set 64-bit DMA mask\n");
		}
	}

	if (err)
		err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));

	c->dma_setup = !err;

	return err;
}

static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
{
	u8 reg;

	reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
	reg |= 0x10;
	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
	/* For eMMC, minimum is 1us but give it 9us for good measure */
	udelay(9);
	reg &= ~0x10;
	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
	/* For eMMC, minimum is 200us but give it 300us for good measure */
	usleep_range(300, 1000);
}

static const struct sdhci_ops sdhci_acpi_ops_dflt = {
	.set_clock = sdhci_set_clock,
	.enable_dma = sdhci_acpi_enable_dma,
	.set_bus_width = sdhci_set_bus_width,
	.reset = sdhci_reset,
	.set_uhs_signaling = sdhci_set_uhs_signaling,
};

static const struct sdhci_ops sdhci_acpi_ops_int = {
	.set_clock = sdhci_set_clock,
	.enable_dma = sdhci_acpi_enable_dma,
	.set_bus_width = sdhci_set_bus_width,
	.reset = sdhci_reset,
	.set_uhs_signaling = sdhci_set_uhs_signaling,
	.hw_reset   = sdhci_acpi_int_hw_reset,
};

static const struct sdhci_acpi_chip sdhci_acpi_chip_int = {
	.ops = &sdhci_acpi_ops_int,
};

static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev,
				      const char *hid, const char *uid)
{
	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	struct sdhci_host *host;

	if (!c || !c->host)
		return 0;

	host = c->host;

	/* Platform specific code during emmc proble slot goes here */

	if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") &&
	    sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 &&
	    sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807)
		host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */

	return 0;
}

static int sdhci_acpi_sdio_probe_slot(struct platform_device *pdev,
				      const char *hid, const char *uid)
{
	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	struct sdhci_host *host;

	if (!c || !c->host)
		return 0;

	host = c->host;

	/* Platform specific code during emmc proble slot goes here */

	return 0;
}

static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev,
				    const char *hid, const char *uid)
{
	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	struct sdhci_host *host;

	if (!c || !c->host || !c->slot)
		return 0;

	host = c->host;

	/* Platform specific code during emmc proble slot goes here */

	return 0;
}

static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
	.chip    = &sdhci_acpi_chip_int,
	.caps    = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
		   MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
		   MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_WAIT_WHILE_BUSY,
	.caps2   = MMC_CAP2_HC_ERASE_SZ,
	.flags   = SDHCI_ACPI_RUNTIME_PM,
	.quirks  = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | SDHCI_QUIRK2_STOP_WITH_TC,
	.probe_slot	= sdhci_acpi_emmc_probe_slot,
};

static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
	.quirks  = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
		   SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
	.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
	.caps    = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD |
		   MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_WAIT_WHILE_BUSY,
	.flags   = SDHCI_ACPI_RUNTIME_PM,
	.pm_caps = MMC_PM_KEEP_POWER,
	.probe_slot	= sdhci_acpi_sdio_probe_slot,
};

static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
	.flags   = SDHCI_ACPI_SD_CD | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL |
		   SDHCI_ACPI_RUNTIME_PM,
	.quirks  = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
	.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
		   SDHCI_QUIRK2_STOP_WITH_TC,
	.caps    = MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_WAIT_WHILE_BUSY,
	.probe_slot	= sdhci_acpi_sd_probe_slot,
};

struct sdhci_acpi_uid_slot {
	const char *hid;
	const char *uid;
	const struct sdhci_acpi_slot *slot;
};

static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = {
	{ "80860F14" , "1" , &sdhci_acpi_slot_int_emmc },
	{ "80860F14" , "3" , &sdhci_acpi_slot_int_sd   },
	{ "80860F16" , NULL, &sdhci_acpi_slot_int_sd   },
	{ "INT33BB"  , "2" , &sdhci_acpi_slot_int_sdio },
	{ "INT33BB"  , "3" , &sdhci_acpi_slot_int_sd },
	{ "INT33C6"  , NULL, &sdhci_acpi_slot_int_sdio },
	{ "INT3436"  , NULL, &sdhci_acpi_slot_int_sdio },
	{ "INT344D"  , NULL, &sdhci_acpi_slot_int_sdio },
	{ "PNP0D40"  },
	{ },
};

static const struct acpi_device_id sdhci_acpi_ids[] = {
	{ "80860F14" },
	{ "80860F16" },
	{ "INT33BB"  },
	{ "INT33C6"  },
	{ "INT3436"  },
	{ "INT344D"  },
	{ "PNP0D40"  },
	{ },
};
MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids);

static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid,
							 const char *uid)
{
	const struct sdhci_acpi_uid_slot *u;

	for (u = sdhci_acpi_uids; u->hid; u++) {
		if (strcmp(u->hid, hid))
			continue;
		if (!u->uid)
			return u->slot;
		if (uid && !strcmp(u->uid, uid))
			return u->slot;
	}
	return NULL;
}

static int sdhci_acpi_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	acpi_handle handle = ACPI_HANDLE(dev);
	struct acpi_device *device;
	struct sdhci_acpi_host *c;
	struct sdhci_host *host;
	struct resource *iomem;
	resource_size_t len;
	const char *hid;
	const char *uid;
	int err;

	if (acpi_bus_get_device(handle, &device))
		return -ENODEV;

	if (acpi_bus_get_status(device) || !device->status.present)
		return -ENODEV;

	hid = acpi_device_hid(device);
	uid = device->pnp.unique_id;

	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!iomem)
		return -ENOMEM;

	len = resource_size(iomem);
	if (len < 0x100)
		dev_err(dev, "Invalid iomem size!\n");

	if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev)))
		return -ENOMEM;

	host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host));
	if (IS_ERR(host))
		return PTR_ERR(host);

	c = sdhci_priv(host);
	c->host = host;
	c->slot = sdhci_acpi_get_slot(hid, uid);
	c->pdev = pdev;
	c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM);

	platform_set_drvdata(pdev, c);

	host->hw_name	= "ACPI";
	host->ops	= &sdhci_acpi_ops_dflt;
	host->irq	= platform_get_irq(pdev, 0);

	host->ioaddr = devm_ioremap_nocache(dev, iomem->start,
					    resource_size(iomem));
	if (host->ioaddr == NULL) {
		err = -ENOMEM;
		goto err_free;
	}

	if (c->slot) {
		if (c->slot->probe_slot) {
			err = c->slot->probe_slot(pdev, hid, uid);
			if (err)
				goto err_free;
		}
		if (c->slot->chip) {
			host->ops            = c->slot->chip->ops;
			host->quirks        |= c->slot->chip->quirks;
			host->quirks2       |= c->slot->chip->quirks2;
			host->mmc->caps     |= c->slot->chip->caps;
			host->mmc->caps2    |= c->slot->chip->caps2;
			host->mmc->pm_caps  |= c->slot->chip->pm_caps;
		}
		host->quirks        |= c->slot->quirks;
		host->quirks2       |= c->slot->quirks2;
		host->mmc->caps     |= c->slot->caps;
		host->mmc->caps2    |= c->slot->caps2;
		host->mmc->pm_caps  |= c->slot->pm_caps;
	}

	host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;

	if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
		bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL);

		if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL)) {
			dev_warn(dev, "failed to setup card detect gpio\n");
			c->use_runtime_pm = false;
		}
	}

	err = sdhci_add_host(host);
	if (err)
		goto err_free;

	if (c->use_runtime_pm) {
		pm_runtime_set_active(dev);
		pm_suspend_ignore_children(dev, 1);
		pm_runtime_set_autosuspend_delay(dev, 50);
		pm_runtime_use_autosuspend(dev);
		pm_runtime_enable(dev);
	}

	return 0;

err_free:
	sdhci_free_host(c->host);
	return err;
}

static int sdhci_acpi_remove(struct platform_device *pdev)
{
	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	struct device *dev = &pdev->dev;
	int dead;

	if (c->use_runtime_pm) {
		pm_runtime_get_sync(dev);
		pm_runtime_disable(dev);
		pm_runtime_put_noidle(dev);
	}

	if (c->slot && c->slot->remove_slot)
		c->slot->remove_slot(pdev);

	dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0);
	sdhci_remove_host(c->host, dead);
	sdhci_free_host(c->host);

	return 0;
}

#ifdef CONFIG_PM_SLEEP

static int sdhci_acpi_suspend(struct device *dev)
{
	struct sdhci_acpi_host *c = dev_get_drvdata(dev);

	return sdhci_suspend_host(c->host);
}

static int sdhci_acpi_resume(struct device *dev)
{
	struct sdhci_acpi_host *c = dev_get_drvdata(dev);

	return sdhci_resume_host(c->host);
}

#else

#define sdhci_acpi_suspend	NULL
#define sdhci_acpi_resume	NULL

#endif

#ifdef CONFIG_PM

static int sdhci_acpi_runtime_suspend(struct device *dev)
{
	struct sdhci_acpi_host *c = dev_get_drvdata(dev);

	return sdhci_runtime_suspend_host(c->host);
}

static int sdhci_acpi_runtime_resume(struct device *dev)
{
	struct sdhci_acpi_host *c = dev_get_drvdata(dev);

	return sdhci_runtime_resume_host(c->host);
}

static int sdhci_acpi_runtime_idle(struct device *dev)
{
	return 0;
}

#endif

static const struct dev_pm_ops sdhci_acpi_pm_ops = {
	.suspend		= sdhci_acpi_suspend,
	.resume			= sdhci_acpi_resume,
	SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend,
			sdhci_acpi_runtime_resume, sdhci_acpi_runtime_idle)
};

static struct platform_driver sdhci_acpi_driver = {
	.driver = {
		.name			= "sdhci-acpi",
		.acpi_match_table	= sdhci_acpi_ids,
		.pm			= &sdhci_acpi_pm_ops,
	},
	.probe	= sdhci_acpi_probe,
	.remove	= sdhci_acpi_remove,
};

module_platform_driver(sdhci_acpi_driver);

MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver");
MODULE_AUTHOR("Adrian Hunter");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
c4e05037 AH	1	/*
	2	* Secure Digital Host Controller Interface ACPI driver.
	3	*
	4	* Copyright (c) 2012, Intel Corporation.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License along with
	16	* this program; if not, write to the Free Software Foundation, Inc.,
	17	* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
	18	*
	19	*/
	20
	21	#include <linux/init.h>
	22	#include <linux/export.h>
	23	#include <linux/module.h>
	24	#include <linux/device.h>
	25	#include <linux/platform_device.h>
	26	#include <linux/ioport.h>
	27	#include <linux/io.h>
	28	#include <linux/dma-mapping.h>
	29	#include <linux/compiler.h>
	30	#include <linux/stddef.h>
	31	#include <linux/bitops.h>
	32	#include <linux/types.h>
	33	#include <linux/err.h>
	34	#include <linux/interrupt.h>
	35	#include <linux/acpi.h>
	36	#include <linux/pm.h>
	37	#include <linux/pm_runtime.h>
b04fa064	38	#include <linux/delay.h>
c4e05037 AH	39
	40	#include <linux/mmc/host.h>
	41	#include <linux/mmc/pm.h>
4fd4409c	42	#include <linux/mmc/slot-gpio.h>
c4e05037 AH	43	#include <linux/mmc/sdhci.h>
	44
	45	#include "sdhci.h"
	46
	47	enum {
4fd4409c AH	48	SDHCI_ACPI_SD_CD = BIT(0),
	49	SDHCI_ACPI_RUNTIME_PM = BIT(1),
	50	SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL = BIT(2),
c4e05037 AH	51	};
	52
	53	struct sdhci_acpi_chip {
	54	const struct sdhci_ops *ops;
	55	unsigned int quirks;
	56	unsigned int quirks2;
	57	unsigned long caps;
	58	unsigned int caps2;
	59	mmc_pm_flag_t pm_caps;
	60	};
	61
	62	struct sdhci_acpi_slot {
	63	const struct sdhci_acpi_chip *chip;
	64	unsigned int quirks;
	65	unsigned int quirks2;
	66	unsigned long caps;
	67	unsigned int caps2;
	68	mmc_pm_flag_t pm_caps;
	69	unsigned int flags;
7dafca83	70	int (probe_slot)(struct platform_device , const char , const char );
578b36b6	71	int (remove_slot)(struct platform_device );
c4e05037 AH	72	};
	73
	74	struct sdhci_acpi_host {
	75	struct sdhci_host *host;
	76	const struct sdhci_acpi_slot *slot;
	77	struct platform_device *pdev;
	78	bool use_runtime_pm;
4f64f843	79	bool dma_setup;
c4e05037 AH	80	};
	81
	82	static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag)
	83	{
	84	return c->slot && (c->slot->flags & flag);
	85	}
	86
	87	static int sdhci_acpi_enable_dma(struct sdhci_host *host)
	88	{
4f64f843 AH	89	struct sdhci_acpi_host *c = sdhci_priv(host);
	90	struct device *dev = &c->pdev->dev;
	91	int err = -1;
	92
	93	if (c->dma_setup)
	94	return 0;
	95
	96	if (host->flags & SDHCI_USE_64_BIT_DMA) {
	97	if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA) {
	98	host->flags &= ~SDHCI_USE_64_BIT_DMA;
	99	} else {
	100	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
	101	if (err)
	102	dev_warn(dev, "Failed to set 64-bit DMA mask\n");
	103	}
	104	}
	105
	106	if (err)
	107	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
	108
	109	c->dma_setup = !err;
	110
	111	return err;
c4e05037 AH	112	}
c4e05037 AH	113
b04fa064 AH	114	static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
	115	{
	116	u8 reg;
	117
	118	reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
	119	reg \|= 0x10;
	120	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
	121	/* For eMMC, minimum is 1us but give it 9us for good measure */
	122	udelay(9);
	123	reg &= ~0x10;
	124	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
	125	/* For eMMC, minimum is 200us but give it 300us for good measure */
	126	usleep_range(300, 1000);
	127	}
	128
c4e05037	129	static const struct sdhci_ops sdhci_acpi_ops_dflt = {
1771059c	130	.set_clock = sdhci_set_clock,
c4e05037	131	.enable_dma = sdhci_acpi_enable_dma,
2317f56c	132	.set_bus_width = sdhci_set_bus_width,
03231f9b	133	.reset = sdhci_reset,
96d7b78c	134	.set_uhs_signaling = sdhci_set_uhs_signaling,
c4e05037 AH	135	};
c4e05037 AH	136
b04fa064	137	static const struct sdhci_ops sdhci_acpi_ops_int = {
1771059c	138	.set_clock = sdhci_set_clock,
b04fa064	139	.enable_dma = sdhci_acpi_enable_dma,
2317f56c	140	.set_bus_width = sdhci_set_bus_width,
03231f9b	141	.reset = sdhci_reset,
96d7b78c	142	.set_uhs_signaling = sdhci_set_uhs_signaling,
b04fa064 AH	143	.hw_reset = sdhci_acpi_int_hw_reset,
	144	};
	145
	146	static const struct sdhci_acpi_chip sdhci_acpi_chip_int = {
	147	.ops = &sdhci_acpi_ops_int,
	148	};
	149
7dafca83 AH	150	static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev,
7dafca83 AH	151	const char hid, const char uid)
578b36b6 GY	152	{
	153	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	154	struct sdhci_host *host;
	155
	156	if (!c \|\| !c->host)
	157	return 0;
	158
	159	host = c->host;
	160
	161	/* Platform specific code during emmc proble slot goes here */
	162
8024379e AH	163	if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") &&
	164	sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 &&
	165	sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807)
	166	host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
	167
578b36b6 GY	168	return 0;
	169	}
	170
7dafca83 AH	171	static int sdhci_acpi_sdio_probe_slot(struct platform_device *pdev,
7dafca83 AH	172	const char hid, const char uid)
578b36b6 GY	173	{
	174	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	175	struct sdhci_host *host;
	176
	177	if (!c \|\| !c->host)
	178	return 0;
	179
	180	host = c->host;
	181
	182	/* Platform specific code during emmc proble slot goes here */
	183
	184	return 0;
	185	}
	186
7dafca83 AH	187	static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev,
7dafca83 AH	188	const char hid, const char uid)
578b36b6 GY	189	{
	190	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	191	struct sdhci_host *host;
	192
	193	if (!c \|\| !c->host \|\| !c->slot)
	194	return 0;
	195
	196	host = c->host;
	197
	198	/* Platform specific code during emmc proble slot goes here */
	199
	200	return 0;
	201	}
	202
07a58883	203	static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
b04fa064	204	.chip = &sdhci_acpi_chip_int,
f25c3372	205	.caps = MMC_CAP_8_BIT_DATA \| MMC_CAP_NONREMOVABLE \|
9d65cb88 AH	206	MMC_CAP_HW_RESET \| MMC_CAP_1_8V_DDR \|
9d65cb88 AH	207	MMC_CAP_BUS_WIDTH_TEST \| MMC_CAP_WAIT_WHILE_BUSY,
07a58883 AH	208	.caps2 = MMC_CAP2_HC_ERASE_SZ,
07a58883 AH	209	.flags = SDHCI_ACPI_RUNTIME_PM,
e1f5633a	210	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
934e31b9	211	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN \| SDHCI_QUIRK2_STOP_WITH_TC,
578b36b6	212	.probe_slot = sdhci_acpi_emmc_probe_slot,
07a58883 AH	213	};
07a58883 AH	214
e5571397	215	static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
e1f5633a AH	216	.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION \|
e1f5633a AH	217	SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
e5571397	218	.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
9d65cb88 AH	219	.caps = MMC_CAP_NONREMOVABLE \| MMC_CAP_POWER_OFF_CARD \|
9d65cb88 AH	220	MMC_CAP_BUS_WIDTH_TEST \| MMC_CAP_WAIT_WHILE_BUSY,
e5571397 AH	221	.flags = SDHCI_ACPI_RUNTIME_PM,
e5571397 AH	222	.pm_caps = MMC_PM_KEEP_POWER,
578b36b6	223	.probe_slot = sdhci_acpi_sdio_probe_slot,
e5571397 AH	224	};
e5571397 AH	225
07a58883	226	static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
4fd4409c AH	227	.flags = SDHCI_ACPI_SD_CD \| SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL \|
4fd4409c AH	228	SDHCI_ACPI_RUNTIME_PM,
e1f5633a	229	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
934e31b9 AH	230	.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON \|
934e31b9 AH	231	SDHCI_QUIRK2_STOP_WITH_TC,
9d65cb88	232	.caps = MMC_CAP_BUS_WIDTH_TEST \| MMC_CAP_WAIT_WHILE_BUSY,
578b36b6	233	.probe_slot = sdhci_acpi_sd_probe_slot,
07a58883 AH	234	};
	235
	236	struct sdhci_acpi_uid_slot {
	237	const char *hid;
	238	const char *uid;
	239	const struct sdhci_acpi_slot *slot;
	240	};
	241
	242	static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = {
	243	{ "80860F14" , "1" , &sdhci_acpi_slot_int_emmc },
	244	{ "80860F14" , "3" , &sdhci_acpi_slot_int_sd },
aad95dc4	245	{ "80860F16" , NULL, &sdhci_acpi_slot_int_sd },
07a58883	246	{ "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio },
7147eaf3	247	{ "INT33BB" , "3" , &sdhci_acpi_slot_int_sd },
07a58883	248	{ "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio },
07c001c1	249	{ "INT3436" , NULL, &sdhci_acpi_slot_int_sdio },
d0ed8e6b	250	{ "INT344D" , NULL, &sdhci_acpi_slot_int_sdio },
07a58883 AH	251	{ "PNP0D40" },
	252	{ },
	253	};
	254
c4e05037	255	static const struct acpi_device_id sdhci_acpi_ids[] = {
07a58883	256	{ "80860F14" },
aad95dc4	257	{ "80860F16" },
07a58883 AH	258	{ "INT33BB" },
07a58883 AH	259	{ "INT33C6" },
07c001c1	260	{ "INT3436" },
d0ed8e6b	261	{ "INT344D" },
07a58883	262	{ "PNP0D40" },
c4e05037 AH	263	{ },
	264	};
	265	MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids);
	266
3db35251 AH	267	static const struct sdhci_acpi_slot sdhci_acpi_get_slot(const char hid,
3db35251 AH	268	const char *uid)
c4e05037	269	{
07a58883 AH	270	const struct sdhci_acpi_uid_slot *u;
	271
	272	for (u = sdhci_acpi_uids; u->hid; u++) {
	273	if (strcmp(u->hid, hid))
	274	continue;
	275	if (!u->uid)
	276	return u->slot;
	277	if (uid && !strcmp(u->uid, uid))
	278	return u->slot;
	279	}
c4e05037 AH	280	return NULL;
	281	}
	282
4e608e4e	283	static int sdhci_acpi_probe(struct platform_device *pdev)
c4e05037 AH	284	{
	285	struct device *dev = &pdev->dev;
	286	acpi_handle handle = ACPI_HANDLE(dev);
	287	struct acpi_device *device;
	288	struct sdhci_acpi_host *c;
	289	struct sdhci_host *host;
	290	struct resource *iomem;
	291	resource_size_t len;
	292	const char *hid;
3db35251	293	const char *uid;
87875655	294	int err;
c4e05037 AH	295
	296	if (acpi_bus_get_device(handle, &device))
	297	return -ENODEV;
	298
	299	if (acpi_bus_get_status(device) \|\| !device->status.present)
	300	return -ENODEV;
	301
	302	hid = acpi_device_hid(device);
3db35251	303	uid = device->pnp.unique_id;
c4e05037 AH	304
	305	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	306	if (!iomem)
	307	return -ENOMEM;
	308
	309	len = resource_size(iomem);
	310	if (len < 0x100)
	311	dev_err(dev, "Invalid iomem size!\n");
	312
	313	if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev)))
	314	return -ENOMEM;
	315
	316	host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host));
	317	if (IS_ERR(host))
	318	return PTR_ERR(host);
	319
	320	c = sdhci_priv(host);
	321	c->host = host;
3db35251	322	c->slot = sdhci_acpi_get_slot(hid, uid);
c4e05037 AH	323	c->pdev = pdev;
	324	c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM);
	325
	326	platform_set_drvdata(pdev, c);
	327
	328	host->hw_name = "ACPI";
	329	host->ops = &sdhci_acpi_ops_dflt;
	330	host->irq = platform_get_irq(pdev, 0);
	331
	332	host->ioaddr = devm_ioremap_nocache(dev, iomem->start,
	333	resource_size(iomem));
	334	if (host->ioaddr == NULL) {
	335	err = -ENOMEM;
	336	goto err_free;
	337	}
	338
c4e05037	339	if (c->slot) {
578b36b6	340	if (c->slot->probe_slot) {
7dafca83	341	err = c->slot->probe_slot(pdev, hid, uid);
578b36b6 GY	342	if (err)
	343	goto err_free;
	344	}
c4e05037 AH	345	if (c->slot->chip) {
	346	host->ops = c->slot->chip->ops;
	347	host->quirks \|= c->slot->chip->quirks;
	348	host->quirks2 \|= c->slot->chip->quirks2;
	349	host->mmc->caps \|= c->slot->chip->caps;
	350	host->mmc->caps2 \|= c->slot->chip->caps2;
	351	host->mmc->pm_caps \|= c->slot->chip->pm_caps;
	352	}
	353	host->quirks \|= c->slot->quirks;
	354	host->quirks2 \|= c->slot->quirks2;
	355	host->mmc->caps \|= c->slot->caps;
	356	host->mmc->caps2 \|= c->slot->caps2;
	357	host->mmc->pm_caps \|= c->slot->pm_caps;
	358	}
	359
0d3e3350 AH	360	host->mmc->caps2 \|= MMC_CAP2_NO_PRESCAN_POWERUP;
0d3e3350 AH	361
a61abe6e	362	if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
4fd4409c AH	363	bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL);
4fd4409c AH	364
89168b48	365	if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL)) {
4fd4409c	366	dev_warn(dev, "failed to setup card detect gpio\n");
a61abe6e	367	c->use_runtime_pm = false;
4fd4409c	368	}
a61abe6e AH	369	}
a61abe6e AH	370
4fd4409c AH	371	err = sdhci_add_host(host);
	372	if (err)
	373	goto err_free;
	374
c4e05037	375	if (c->use_runtime_pm) {
1d1ff458	376	pm_runtime_set_active(dev);
c4e05037 AH	377	pm_suspend_ignore_children(dev, 1);
	378	pm_runtime_set_autosuspend_delay(dev, 50);
	379	pm_runtime_use_autosuspend(dev);
	380	pm_runtime_enable(dev);
	381	}
	382
	383	return 0;
	384
	385	err_free:
c4e05037 AH	386	sdhci_free_host(c->host);
	387	return err;
	388	}
	389
4e608e4e	390	static int sdhci_acpi_remove(struct platform_device *pdev)
c4e05037 AH	391	{
	392	struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
	393	struct device *dev = &pdev->dev;
	394	int dead;
	395
	396	if (c->use_runtime_pm) {
	397	pm_runtime_get_sync(dev);
	398	pm_runtime_disable(dev);
	399	pm_runtime_put_noidle(dev);
	400	}
	401
578b36b6 GY	402	if (c->slot && c->slot->remove_slot)
	403	c->slot->remove_slot(pdev);
	404
c4e05037 AH	405	dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0);
c4e05037 AH	406	sdhci_remove_host(c->host, dead);
c4e05037 AH	407	sdhci_free_host(c->host);
	408
	409	return 0;
	410	}
	411
	412	#ifdef CONFIG_PM_SLEEP
	413
	414	static int sdhci_acpi_suspend(struct device *dev)
	415	{
	416	struct sdhci_acpi_host *c = dev_get_drvdata(dev);
	417
	418	return sdhci_suspend_host(c->host);
	419	}
	420
	421	static int sdhci_acpi_resume(struct device *dev)
	422	{
	423	struct sdhci_acpi_host *c = dev_get_drvdata(dev);
	424
	425	return sdhci_resume_host(c->host);
	426	}
	427
	428	#else
	429
	430	#define sdhci_acpi_suspend NULL
	431	#define sdhci_acpi_resume NULL
	432
	433	#endif
	434
162d6f98	435	#ifdef CONFIG_PM
c4e05037 AH	436
	437	static int sdhci_acpi_runtime_suspend(struct device *dev)
	438	{
	439	struct sdhci_acpi_host *c = dev_get_drvdata(dev);
	440
	441	return sdhci_runtime_suspend_host(c->host);
	442	}
	443
	444	static int sdhci_acpi_runtime_resume(struct device *dev)
	445	{
	446	struct sdhci_acpi_host *c = dev_get_drvdata(dev);
	447
	448	return sdhci_runtime_resume_host(c->host);
	449	}
	450
	451	static int sdhci_acpi_runtime_idle(struct device *dev)
	452	{
	453	return 0;
	454	}
	455
c4e05037 AH	456	#endif
	457
	458	static const struct dev_pm_ops sdhci_acpi_pm_ops = {
	459	.suspend = sdhci_acpi_suspend,
	460	.resume = sdhci_acpi_resume,
1d75f74b PG	461	SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend,
1d75f74b PG	462	sdhci_acpi_runtime_resume, sdhci_acpi_runtime_idle)
c4e05037 AH	463	};
	464
	465	static struct platform_driver sdhci_acpi_driver = {
	466	.driver = {
	467	.name = "sdhci-acpi",
c4e05037 AH	468	.acpi_match_table = sdhci_acpi_ids,
	469	.pm = &sdhci_acpi_pm_ops,
	470	},
	471	.probe = sdhci_acpi_probe,
4e608e4e	472	.remove = sdhci_acpi_remove,
c4e05037 AH	473	};
	474
	475	module_platform_driver(sdhci_acpi_driver);
	476
	477	MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver");
	478	MODULE_AUTHOR("Adrian Hunter");
	479	MODULE_LICENSE("GPL v2");