[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / misc / tifm_7xx1.c

/*
 *  tifm_7xx1.c - TI FlashMedia driver
 *
 *  Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/tifm.h>
#include <linux/dma-mapping.h>
#include <linux/freezer.h>

#define DRIVER_NAME "tifm_7xx1"
#define DRIVER_VERSION "0.7"

static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock)
{
	unsigned long flags;

	spin_lock_irqsave(&fm->lock, flags);
	fm->socket_change_set |= 1 << sock->socket_id;
	wake_up_all(&fm->change_set_notify);
	spin_unlock_irqrestore(&fm->lock, flags);
}

static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
{
	struct tifm_adapter *fm = dev_id;
	struct tifm_dev *sock;
	unsigned int irq_status;
	unsigned int sock_irq_status, cnt;

	spin_lock(&fm->lock);
	irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
	if (irq_status == 0 || irq_status == (~0)) {
		spin_unlock(&fm->lock);
		return IRQ_NONE;
	}

	if (irq_status & TIFM_IRQ_ENABLE) {
		writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);

		for (cnt = 0; cnt < fm->num_sockets; cnt++) {
			sock = fm->sockets[cnt];
			sock_irq_status = (irq_status >> cnt)
					  & (TIFM_IRQ_FIFOMASK(1)
					     | TIFM_IRQ_CARDMASK(1));

			if (sock && sock_irq_status)
				sock->signal_irq(sock, sock_irq_status);
		}

		fm->socket_change_set |= irq_status
					 & ((1 << fm->num_sockets) - 1);
	}
	writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);

	if (!fm->socket_change_set)
		writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	else
		wake_up_all(&fm->change_set_notify);

	spin_unlock(&fm->lock);
	return IRQ_HANDLED;
}

static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr,
						 int is_x2)
{
	unsigned int s_state;
	int cnt;

	writel(0x0e00, sock_addr + SOCK_CONTROL);

	for (cnt = 0; cnt < 100; cnt++) {
		if (!(TIFM_SOCK_STATE_POWERED
		      & readl(sock_addr + SOCK_PRESENT_STATE)))
			break;
		msleep(10);
	}

	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
		return FM_NULL;

	if (is_x2) {
		writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
	} else {
		// SmartMedia cards need extra 40 msec
		if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1)
			msleep(40);
		writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED,
		       sock_addr + SOCK_CONTROL);
		msleep(10);
		writel((s_state & 0x7) | 0x0c00 | TIFM_CTRL_LED,
			sock_addr + SOCK_CONTROL);
	}

	for (cnt = 0; cnt < 100; cnt++) {
		if ((TIFM_SOCK_STATE_POWERED
		     & readl(sock_addr + SOCK_PRESENT_STATE)))
			break;
		msleep(10);
	}

	if (!is_x2)
		writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
		       sock_addr + SOCK_CONTROL);

	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
}

inline static char __iomem *
tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
{
	return base_addr + ((sock_num + 1) << 10);
}

static int tifm_7xx1_switch_media(void *data)
{
	struct tifm_adapter *fm = data;
	unsigned long flags;
	tifm_media_id media_id;
	char *card_name = "xx";
	int cnt, rc;
	struct tifm_dev *sock;
	unsigned int socket_change_set;

	while (1) {
		rc = wait_event_interruptible(fm->change_set_notify,
					      fm->socket_change_set);
		if (rc == -ERESTARTSYS)
			try_to_freeze();

		spin_lock_irqsave(&fm->lock, flags);
		socket_change_set = fm->socket_change_set;
		fm->socket_change_set = 0;

		dev_dbg(fm->dev, "checking media set %x\n",
			socket_change_set);

		if (kthread_should_stop())
			socket_change_set = (1 << fm->num_sockets) - 1;
		spin_unlock_irqrestore(&fm->lock, flags);

		if (!socket_change_set)
			continue;

		spin_lock_irqsave(&fm->lock, flags);
		for (cnt = 0; cnt < fm->num_sockets; cnt++) {
			if (!(socket_change_set & (1 << cnt)))
				continue;
			sock = fm->sockets[cnt];
			if (sock) {
				printk(KERN_INFO DRIVER_NAME
				       ": demand removing card from socket %d\n",
				       cnt);
				fm->sockets[cnt] = NULL;
				spin_unlock_irqrestore(&fm->lock, flags);
				device_unregister(&sock->dev);
				spin_lock_irqsave(&fm->lock, flags);
				writel(0x0e00,
				       tifm_7xx1_sock_addr(fm->addr, cnt)
				       + SOCK_CONTROL);
			}
			if (kthread_should_stop())
				continue;

			spin_unlock_irqrestore(&fm->lock, flags);
			media_id = tifm_7xx1_toggle_sock_power(
					tifm_7xx1_sock_addr(fm->addr, cnt),
					fm->num_sockets == 2);
			if (media_id) {
				sock = tifm_alloc_device(fm);
				if (sock) {
					sock->addr = tifm_7xx1_sock_addr(fm->addr,
									 cnt);
					sock->media_id = media_id;
					sock->socket_id = cnt;
					switch (media_id) {
					case 1:
						card_name = "xd";
						break;
					case 2:
						card_name = "ms";
						break;
					case 3:
						card_name = "sd";
						break;
					default:
						tifm_free_device(&sock->dev);
						spin_lock_irqsave(&fm->lock, flags);
						continue;
					}
					snprintf(sock->dev.bus_id, BUS_ID_SIZE,
						 "tifm_%s%u:%u", card_name,
						 fm->id, cnt);
					printk(KERN_INFO DRIVER_NAME
					       ": %s card detected in socket %d\n",
					       card_name, cnt);
					if (!device_register(&sock->dev)) {
						spin_lock_irqsave(&fm->lock, flags);
						if (!fm->sockets[cnt]) {
							fm->sockets[cnt] = sock;
							sock = NULL;
						}
						spin_unlock_irqrestore(&fm->lock, flags);
					}
					if (sock)
						tifm_free_device(&sock->dev);
				}
				spin_lock_irqsave(&fm->lock, flags);
			}
		}

		if (!kthread_should_stop()) {
			writel(TIFM_IRQ_FIFOMASK(socket_change_set)
			       | TIFM_IRQ_CARDMASK(socket_change_set),
			       fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
			writel(TIFM_IRQ_FIFOMASK(socket_change_set)
			       | TIFM_IRQ_CARDMASK(socket_change_set),
			       fm->addr + FM_SET_INTERRUPT_ENABLE);
			writel(TIFM_IRQ_ENABLE,
			       fm->addr + FM_SET_INTERRUPT_ENABLE);
			spin_unlock_irqrestore(&fm->lock, flags);
		} else {
			for (cnt = 0; cnt < fm->num_sockets; cnt++) {
				if (fm->sockets[cnt])
					fm->socket_change_set |= 1 << cnt;
			}
			if (!fm->socket_change_set) {
				spin_unlock_irqrestore(&fm->lock, flags);
				return 0;
			} else {
				spin_unlock_irqrestore(&fm->lock, flags);
			}
		}
	}
	return 0;
}

#ifdef CONFIG_PM

static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
{
	dev_dbg(&dev->dev, "suspending host\n");

	pci_save_state(dev);
	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	pci_disable_device(dev);
	pci_set_power_state(dev, pci_choose_state(dev, state));
	return 0;
}

static int tifm_7xx1_resume(struct pci_dev *dev)
{
	struct tifm_adapter *fm = pci_get_drvdata(dev);
	int cnt, rc;
	unsigned long flags;
	tifm_media_id new_ids[fm->num_sockets];

	pci_set_power_state(dev, PCI_D0);
	pci_restore_state(dev);
	rc = pci_enable_device(dev);
	if (rc)
		return rc;
	pci_set_master(dev);

	dev_dbg(&dev->dev, "resuming host\n");

	for (cnt = 0; cnt < fm->num_sockets; cnt++)
		new_ids[cnt] = tifm_7xx1_toggle_sock_power(
					tifm_7xx1_sock_addr(fm->addr, cnt),
					fm->num_sockets == 2);
	spin_lock_irqsave(&fm->lock, flags);
	fm->socket_change_set = 0;
	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
		if (fm->sockets[cnt]) {
			if (fm->sockets[cnt]->media_id == new_ids[cnt])
				fm->socket_change_set |= 1 << cnt;

			fm->sockets[cnt]->media_id = new_ids[cnt];
		}
	}

	writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
	       fm->addr + FM_SET_INTERRUPT_ENABLE);
	if (!fm->socket_change_set) {
		spin_unlock_irqrestore(&fm->lock, flags);
		return 0;
	} else {
		fm->socket_change_set = 0;
		spin_unlock_irqrestore(&fm->lock, flags);
	}

	wait_event_timeout(fm->change_set_notify, fm->socket_change_set, HZ);

	spin_lock_irqsave(&fm->lock, flags);
	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	       | TIFM_IRQ_CARDMASK(fm->socket_change_set),
	       fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	       | TIFM_IRQ_CARDMASK(fm->socket_change_set),
	       fm->addr + FM_SET_INTERRUPT_ENABLE);
	writel(TIFM_IRQ_ENABLE,
	       fm->addr + FM_SET_INTERRUPT_ENABLE);
	fm->socket_change_set = 0;

	spin_unlock_irqrestore(&fm->lock, flags);
	return 0;
}

#else

#define tifm_7xx1_suspend NULL
#define tifm_7xx1_resume NULL

#endif /* CONFIG_PM */

static int tifm_7xx1_probe(struct pci_dev *dev,
			   const struct pci_device_id *dev_id)
{
	struct tifm_adapter *fm;
	int pci_dev_busy = 0;
	int rc;

	rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	if (rc)
		return rc;

	rc = pci_enable_device(dev);
	if (rc)
		return rc;

	pci_set_master(dev);

	rc = pci_request_regions(dev, DRIVER_NAME);
	if (rc) {
		pci_dev_busy = 1;
		goto err_out;
	}

	pci_intx(dev, 1);

	fm = tifm_alloc_adapter();
	if (!fm) {
		rc = -ENOMEM;
		goto err_out_int;
	}

	fm->dev = &dev->dev;
	fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
			  ? 4 : 2;
	fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->num_sockets,
			      GFP_KERNEL);
	if (!fm->sockets)
		goto err_out_free;

	fm->eject = tifm_7xx1_eject;
	pci_set_drvdata(dev, fm);

	fm->addr = ioremap(pci_resource_start(dev, 0),
			   pci_resource_len(dev, 0));
	if (!fm->addr)
		goto err_out_free;

	rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
	if (rc)
		goto err_out_unmap;

	init_waitqueue_head(&fm->change_set_notify);
	rc = tifm_add_adapter(fm, tifm_7xx1_switch_media);
	if (rc)
		goto err_out_irq;

	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
	       fm->addr + FM_SET_INTERRUPT_ENABLE);
	wake_up_process(fm->media_switcher);
	return 0;

err_out_irq:
	free_irq(dev->irq, fm);
err_out_unmap:
	iounmap(fm->addr);
err_out_free:
	pci_set_drvdata(dev, NULL);
	tifm_free_adapter(fm);
err_out_int:
	pci_intx(dev, 0);
	pci_release_regions(dev);
err_out:
	if (!pci_dev_busy)
		pci_disable_device(dev);
	return rc;
}

static void tifm_7xx1_remove(struct pci_dev *dev)
{
	struct tifm_adapter *fm = pci_get_drvdata(dev);
	unsigned long flags;

	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	mmiowb();
	free_irq(dev->irq, fm);

	spin_lock_irqsave(&fm->lock, flags);
	fm->socket_change_set = (1 << fm->num_sockets) - 1;
	spin_unlock_irqrestore(&fm->lock, flags);

	kthread_stop(fm->media_switcher);

	tifm_remove_adapter(fm);

	pci_set_drvdata(dev, NULL);

	iounmap(fm->addr);
	pci_intx(dev, 0);
	pci_release_regions(dev);

	pci_disable_device(dev);
	tifm_free_adapter(fm);
}

static struct pci_device_id tifm_7xx1_pci_tbl [] = {
	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID,
	  PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */
        { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID,
	  PCI_ANY_ID, 0, 0, 0 },
	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID,
	  PCI_ANY_ID, 0, 0, 0 },
	{ }
};

static struct pci_driver tifm_7xx1_driver = {
	.name = DRIVER_NAME,
	.id_table = tifm_7xx1_pci_tbl,
	.probe = tifm_7xx1_probe,
	.remove = tifm_7xx1_remove,
	.suspend = tifm_7xx1_suspend,
	.resume = tifm_7xx1_resume,
};

static int __init tifm_7xx1_init(void)
{
	return pci_register_driver(&tifm_7xx1_driver);
}

static void __exit tifm_7xx1_exit(void)
{
	pci_unregister_driver(&tifm_7xx1_driver);
}

MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia host driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
MODULE_VERSION(DRIVER_VERSION);

module_init(tifm_7xx1_init);
module_exit(tifm_7xx1_exit);
Commit	Line	Data
4020f2d7 AD	1	/*
	2	* tifm_7xx1.c - TI FlashMedia driver
	3	*
	4	* Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	*/
	11
	12	#include <linux/tifm.h>
	13	#include <linux/dma-mapping.h>
7146f0d3	14	#include <linux/freezer.h>
4020f2d7 AD	15
4020f2d7 AD	16	#define DRIVER_NAME "tifm_7xx1"
50743f4c	17	#define DRIVER_VERSION "0.7"
4020f2d7 AD	18
	19	static void tifm_7xx1_eject(struct tifm_adapter fm, struct tifm_dev sock)
	20	{
4020f2d7 AD	21	unsigned long flags;
	22
	23	spin_lock_irqsave(&fm->lock, flags);
7146f0d3 AD	24	fm->socket_change_set \|= 1 << sock->socket_id;
7146f0d3 AD	25	wake_up_all(&fm->change_set_notify);
4020f2d7 AD	26	spin_unlock_irqrestore(&fm->lock, flags);
	27	}
	28
7d12e780	29	static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
4020f2d7 AD	30	{
4020f2d7 AD	31	struct tifm_adapter *fm = dev_id;
217334d1	32	struct tifm_dev *sock;
4020f2d7 AD	33	unsigned int irq_status;
	34	unsigned int sock_irq_status, cnt;
	35
	36	spin_lock(&fm->lock);
	37	irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
	38	if (irq_status == 0 \|\| irq_status == (~0)) {
	39	spin_unlock(&fm->lock);
	40	return IRQ_NONE;
	41	}
	42
	43	if (irq_status & TIFM_IRQ_ENABLE) {
	44	writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	45
8b40adab	46	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
217334d1	47	sock = fm->sockets[cnt];
6412d927 AD	48	sock_irq_status = (irq_status >> cnt)
	49	& (TIFM_IRQ_FIFOMASK(1)
	50	\| TIFM_IRQ_CARDMASK(1));
4020f2d7	51
6412d927 AD	52	if (sock && sock_irq_status)
6412d927 AD	53	sock->signal_irq(sock, sock_irq_status);
4020f2d7	54	}
6412d927	55
8b40adab AD	56	fm->socket_change_set \|= irq_status
8b40adab AD	57	& ((1 << fm->num_sockets) - 1);
4020f2d7 AD	58	}
	59	writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
	60
7146f0d3 AD	61	if (!fm->socket_change_set)
	62	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	63	else
	64	wake_up_all(&fm->change_set_notify);
4020f2d7 AD	65
	66	spin_unlock(&fm->lock);
	67	return IRQ_HANDLED;
	68	}
	69
8b40adab AD	70	static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr,
8b40adab AD	71	int is_x2)
4020f2d7 AD	72	{
	73	unsigned int s_state;
	74	int cnt;
	75
	76	writel(0x0e00, sock_addr + SOCK_CONTROL);
	77
	78	for (cnt = 0; cnt < 100; cnt++) {
8b40adab AD	79	if (!(TIFM_SOCK_STATE_POWERED
8b40adab AD	80	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7 AD	81	break;
	82	msleep(10);
	83	}
	84
	85	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	86	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
	87	return FM_NULL;
	88
	89	if (is_x2) {
	90	writel((s_state & 7) \| 0x0c00, sock_addr + SOCK_CONTROL);
	91	} else {
	92	// SmartMedia cards need extra 40 msec
	93	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1)
	94	msleep(40);
	95	writel(readl(sock_addr + SOCK_CONTROL) \| TIFM_CTRL_LED,
	96	sock_addr + SOCK_CONTROL);
	97	msleep(10);
	98	writel((s_state & 0x7) \| 0x0c00 \| TIFM_CTRL_LED,
	99	sock_addr + SOCK_CONTROL);
	100	}
	101
	102	for (cnt = 0; cnt < 100; cnt++) {
8b40adab AD	103	if ((TIFM_SOCK_STATE_POWERED
8b40adab AD	104	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7 AD	105	break;
	106	msleep(10);
	107	}
	108
	109	if (!is_x2)
	110	writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
	111	sock_addr + SOCK_CONTROL);
	112
	113	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
	114	}
	115
e069d79d AV	116	inline static char __iomem *
e069d79d AV	117	tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
4020f2d7 AD	118	{
	119	return base_addr + ((sock_num + 1) << 10);
	120	}
	121
7146f0d3	122	static int tifm_7xx1_switch_media(void *data)
4020f2d7	123	{
7146f0d3	124	struct tifm_adapter *fm = data;
4020f2d7 AD	125	unsigned long flags;
	126	tifm_media_id media_id;
	127	char *card_name = "xx";
7146f0d3	128	int cnt, rc;
6412d927 AD	129	struct tifm_dev *sock;
6412d927 AD	130	unsigned int socket_change_set;
4020f2d7	131
6412d927	132	while (1) {
7146f0d3 AD	133	rc = wait_event_interruptible(fm->change_set_notify,
	134	fm->socket_change_set);
	135	if (rc == -ERESTARTSYS)
	136	try_to_freeze();
	137
6412d927 AD	138	spin_lock_irqsave(&fm->lock, flags);
	139	socket_change_set = fm->socket_change_set;
	140	fm->socket_change_set = 0;
	141
	142	dev_dbg(fm->dev, "checking media set %x\n",
	143	socket_change_set);
	144
7146f0d3	145	if (kthread_should_stop())
6412d927	146	socket_change_set = (1 << fm->num_sockets) - 1;
4020f2d7	147	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7	148
6412d927	149	if (!socket_change_set)
7146f0d3	150	continue;
6412d927 AD	151
	152	spin_lock_irqsave(&fm->lock, flags);
	153	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	154	if (!(socket_change_set & (1 << cnt)))
	155	continue;
	156	sock = fm->sockets[cnt];
	157	if (sock) {
4020f2d7	158	printk(KERN_INFO DRIVER_NAME
6412d927 AD	159	": demand removing card from socket %d\n",
	160	cnt);
	161	fm->sockets[cnt] = NULL;
	162	spin_unlock_irqrestore(&fm->lock, flags);
	163	device_unregister(&sock->dev);
4020f2d7	164	spin_lock_irqsave(&fm->lock, flags);
6412d927 AD	165	writel(0x0e00,
	166	tifm_7xx1_sock_addr(fm->addr, cnt)
	167	+ SOCK_CONTROL);
	168	}
7146f0d3	169	if (kthread_should_stop())
6412d927 AD	170	continue;
	171
	172	spin_unlock_irqrestore(&fm->lock, flags);
	173	media_id = tifm_7xx1_toggle_sock_power(
	174	tifm_7xx1_sock_addr(fm->addr, cnt),
	175	fm->num_sockets == 2);
	176	if (media_id) {
	177	sock = tifm_alloc_device(fm);
	178	if (sock) {
	179	sock->addr = tifm_7xx1_sock_addr(fm->addr,
8b40adab	180	cnt);
6412d927 AD	181	sock->media_id = media_id;
	182	sock->socket_id = cnt;
	183	switch (media_id) {
	184	case 1:
	185	card_name = "xd";
	186	break;
	187	case 2:
	188	card_name = "ms";
	189	break;
	190	case 3:
	191	card_name = "sd";
	192	break;
	193	default:
	194	tifm_free_device(&sock->dev);
	195	spin_lock_irqsave(&fm->lock, flags);
	196	continue;
	197	}
	198	snprintf(sock->dev.bus_id, BUS_ID_SIZE,
8b40adab AD	199	"tifm_%s%u:%u", card_name,
8b40adab AD	200	fm->id, cnt);
6412d927	201	printk(KERN_INFO DRIVER_NAME
8b40adab AD	202	": %s card detected in socket %d\n",
8b40adab AD	203	card_name, cnt);
6412d927 AD	204	if (!device_register(&sock->dev)) {
	205	spin_lock_irqsave(&fm->lock, flags);
	206	if (!fm->sockets[cnt]) {
	207	fm->sockets[cnt] = sock;
	208	sock = NULL;
	209	}
	210	spin_unlock_irqrestore(&fm->lock, flags);
	211	}
	212	if (sock)
	213	tifm_free_device(&sock->dev);
4020f2d7	214	}
6412d927 AD	215	spin_lock_irqsave(&fm->lock, flags);
	216	}
	217	}
	218
7146f0d3	219	if (!kthread_should_stop()) {
6412d927 AD	220	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	221	\| TIFM_IRQ_CARDMASK(socket_change_set),
	222	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	223	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	224	\| TIFM_IRQ_CARDMASK(socket_change_set),
	225	fm->addr + FM_SET_INTERRUPT_ENABLE);
	226	writel(TIFM_IRQ_ENABLE,
	227	fm->addr + FM_SET_INTERRUPT_ENABLE);
	228	spin_unlock_irqrestore(&fm->lock, flags);
6412d927 AD	229	} else {
	230	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	231	if (fm->sockets[cnt])
	232	fm->socket_change_set \|= 1 << cnt;
	233	}
	234	if (!fm->socket_change_set) {
	235	spin_unlock_irqrestore(&fm->lock, flags);
7146f0d3	236	return 0;
6412d927	237	} else {
4020f2d7	238	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	239	}
4020f2d7 AD	240	}
4020f2d7	241	}
7146f0d3	242	return 0;
4020f2d7 AD	243	}
4020f2d7 AD	244
7146f0d3 AD	245	#ifdef CONFIG_PM
7146f0d3 AD	246
4020f2d7 AD	247	static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
4020f2d7 AD	248	{
7146f0d3	249	dev_dbg(&dev->dev, "suspending host\n");
4020f2d7	250
7146f0d3 AD	251	pci_save_state(dev);
	252	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	253	pci_disable_device(dev);
	254	pci_set_power_state(dev, pci_choose_state(dev, state));
4020f2d7 AD	255	return 0;
	256	}
	257
	258	static int tifm_7xx1_resume(struct pci_dev *dev)
	259	{
	260	struct tifm_adapter *fm = pci_get_drvdata(dev);
7146f0d3	261	int cnt, rc;
4020f2d7	262	unsigned long flags;
7146f0d3	263	tifm_media_id new_ids[fm->num_sockets];
4020f2d7	264
7146f0d3	265	pci_set_power_state(dev, PCI_D0);
4020f2d7	266	pci_restore_state(dev);
7146f0d3 AD	267	rc = pci_enable_device(dev);
	268	if (rc)
	269	return rc;
	270	pci_set_master(dev);
	271
	272	dev_dbg(&dev->dev, "resuming host\n");
4020f2d7	273
7146f0d3 AD	274	for (cnt = 0; cnt < fm->num_sockets; cnt++)
	275	new_ids[cnt] = tifm_7xx1_toggle_sock_power(
	276	tifm_7xx1_sock_addr(fm->addr, cnt),
	277	fm->num_sockets == 2);
4020f2d7	278	spin_lock_irqsave(&fm->lock, flags);
7146f0d3 AD	279	fm->socket_change_set = 0;
	280	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	281	if (fm->sockets[cnt]) {
	282	if (fm->sockets[cnt]->media_id == new_ids[cnt])
	283	fm->socket_change_set \|= 1 << cnt;
	284
	285	fm->sockets[cnt]->media_id = new_ids[cnt];
	286	}
	287	}
	288
6412d927	289	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
7146f0d3 AD	290	fm->addr + FM_SET_INTERRUPT_ENABLE);
	291	if (!fm->socket_change_set) {
	292	spin_unlock_irqrestore(&fm->lock, flags);
	293	return 0;
	294	} else {
	295	fm->socket_change_set = 0;
	296	spin_unlock_irqrestore(&fm->lock, flags);
	297	}
	298
	299	wait_event_timeout(fm->change_set_notify, fm->socket_change_set, HZ);
	300
	301	spin_lock_irqsave(&fm->lock, flags);
	302	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	303	\| TIFM_IRQ_CARDMASK(fm->socket_change_set),
	304	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	305	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	306	\| TIFM_IRQ_CARDMASK(fm->socket_change_set),
	307	fm->addr + FM_SET_INTERRUPT_ENABLE);
	308	writel(TIFM_IRQ_ENABLE,
	309	fm->addr + FM_SET_INTERRUPT_ENABLE);
	310	fm->socket_change_set = 0;
	311
4020f2d7 AD	312	spin_unlock_irqrestore(&fm->lock, flags);
	313	return 0;
	314	}
	315
7146f0d3 AD	316	#else
	317
	318	#define tifm_7xx1_suspend NULL
	319	#define tifm_7xx1_resume NULL
	320
	321	#endif /* CONFIG_PM */
	322
4020f2d7	323	static int tifm_7xx1_probe(struct pci_dev *dev,
8b40adab	324	const struct pci_device_id *dev_id)
4020f2d7 AD	325	{
	326	struct tifm_adapter *fm;
	327	int pci_dev_busy = 0;
	328	int rc;
	329
	330	rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	331	if (rc)
	332	return rc;
	333
	334	rc = pci_enable_device(dev);
	335	if (rc)
	336	return rc;
	337
	338	pci_set_master(dev);
	339
	340	rc = pci_request_regions(dev, DRIVER_NAME);
	341	if (rc) {
	342	pci_dev_busy = 1;
	343	goto err_out;
	344	}
	345
	346	pci_intx(dev, 1);
	347
	348	fm = tifm_alloc_adapter();
	349	if (!fm) {
	350	rc = -ENOMEM;
	351	goto err_out_int;
	352	}
	353
	354	fm->dev = &dev->dev;
b5ad6761 AD	355	fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
b5ad6761 AD	356	? 4 : 2;
6412d927	357	fm->sockets = kzalloc(sizeof(struct tifm_dev) fm->num_sockets,
8b40adab	358	GFP_KERNEL);
4020f2d7 AD	359	if (!fm->sockets)
	360	goto err_out_free;
	361
4020f2d7 AD	362	fm->eject = tifm_7xx1_eject;
	363	pci_set_drvdata(dev, fm);
	364
	365	fm->addr = ioremap(pci_resource_start(dev, 0),
8b40adab	366	pci_resource_len(dev, 0));
4020f2d7 AD	367	if (!fm->addr)
	368	goto err_out_free;
	369
38515e90	370	rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
4020f2d7 AD	371	if (rc)
	372	goto err_out_unmap;
	373
7146f0d3 AD	374	init_waitqueue_head(&fm->change_set_notify);
7146f0d3 AD	375	rc = tifm_add_adapter(fm, tifm_7xx1_switch_media);
4020f2d7 AD	376	if (rc)
	377	goto err_out_irq;
	378
	379	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
6412d927	380	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
8b40adab	381	fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3	382	wake_up_process(fm->media_switcher);
4020f2d7 AD	383	return 0;
	384
	385	err_out_irq:
	386	free_irq(dev->irq, fm);
	387	err_out_unmap:
	388	iounmap(fm->addr);
	389	err_out_free:
	390	pci_set_drvdata(dev, NULL);
	391	tifm_free_adapter(fm);
	392	err_out_int:
	393	pci_intx(dev, 0);
	394	pci_release_regions(dev);
	395	err_out:
	396	if (!pci_dev_busy)
	397	pci_disable_device(dev);
	398	return rc;
	399	}
	400
	401	static void tifm_7xx1_remove(struct pci_dev *dev)
	402	{
	403	struct tifm_adapter *fm = pci_get_drvdata(dev);
	404	unsigned long flags;
	405
7146f0d3 AD	406	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	407	mmiowb();
	408	free_irq(dev->irq, fm);
	409
4020f2d7	410	spin_lock_irqsave(&fm->lock, flags);
7146f0d3	411	fm->socket_change_set = (1 << fm->num_sockets) - 1;
4020f2d7 AD	412	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	413
7146f0d3	414	kthread_stop(fm->media_switcher);
4020f2d7 AD	415
	416	tifm_remove_adapter(fm);
	417
e069d79d	418	pci_set_drvdata(dev, NULL);
4020f2d7 AD	419
	420	iounmap(fm->addr);
	421	pci_intx(dev, 0);
	422	pci_release_regions(dev);
	423
	424	pci_disable_device(dev);
	425	tifm_free_adapter(fm);
	426	}
	427
	428	static struct pci_device_id tifm_7xx1_pci_tbl [] = {
b5ad6761 AD	429	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID,
	430	PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */
	431	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID,
	432	PCI_ANY_ID, 0, 0, 0 },
	433	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID,
	434	PCI_ANY_ID, 0, 0, 0 },
4020f2d7 AD	435	{ }
	436	};
	437
	438	static struct pci_driver tifm_7xx1_driver = {
	439	.name = DRIVER_NAME,
	440	.id_table = tifm_7xx1_pci_tbl,
	441	.probe = tifm_7xx1_probe,
	442	.remove = tifm_7xx1_remove,
	443	.suspend = tifm_7xx1_suspend,
	444	.resume = tifm_7xx1_resume,
	445	};
	446
	447	static int __init tifm_7xx1_init(void)
	448	{
	449	return pci_register_driver(&tifm_7xx1_driver);
	450	}
	451
	452	static void __exit tifm_7xx1_exit(void)
	453	{
	454	pci_unregister_driver(&tifm_7xx1_driver);
	455	}
	456
	457	MODULE_AUTHOR("Alex Dubov");
	458	MODULE_DESCRIPTION("TI FlashMedia host driver");
	459	MODULE_LICENSE("GPL");
	460	MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
	461	MODULE_VERSION(DRIVER_VERSION);
	462
	463	module_init(tifm_7xx1_init);
	464	module_exit(tifm_7xx1_exit);