[mirror_ubuntu-bionic-kernel.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 == 0x803B) ? 2 : 4;
	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, SA_SHIRQ, 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, 0x8033, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	  0 }, /* xx21 - the one I have */
        { PCI_VENDOR_ID_TI, 0x803B, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	  0 }, /* xx12 - should be also supported */
	{ }
};

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
6412d927	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 AD	55
	56	fm->socket_change_set \|= irq_status
	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
e069d79d	70	static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr, int is_x2)
4020f2d7 AD	71	{
	72	unsigned int s_state;
	73	int cnt;
	74
	75	writel(0x0e00, sock_addr + SOCK_CONTROL);
	76
	77	for (cnt = 0; cnt < 100; cnt++) {
	78	if (!(TIFM_SOCK_STATE_POWERED &
	79	readl(sock_addr + SOCK_PRESENT_STATE)))
	80	break;
	81	msleep(10);
	82	}
	83
	84	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	85	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
	86	return FM_NULL;
	87
	88	if (is_x2) {
	89	writel((s_state & 7) \| 0x0c00, sock_addr + SOCK_CONTROL);
	90	} else {
	91	// SmartMedia cards need extra 40 msec
	92	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1)
	93	msleep(40);
	94	writel(readl(sock_addr + SOCK_CONTROL) \| TIFM_CTRL_LED,
	95	sock_addr + SOCK_CONTROL);
	96	msleep(10);
	97	writel((s_state & 0x7) \| 0x0c00 \| TIFM_CTRL_LED,
	98	sock_addr + SOCK_CONTROL);
	99	}
	100
	101	for (cnt = 0; cnt < 100; cnt++) {
	102	if ((TIFM_SOCK_STATE_POWERED &
	103	readl(sock_addr + SOCK_PRESENT_STATE)))
	104	break;
	105	msleep(10);
	106	}
	107
	108	if (!is_x2)
	109	writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
	110	sock_addr + SOCK_CONTROL);
	111
	112	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
	113	}
	114
e069d79d AV	115	inline static char __iomem *
e069d79d AV	116	tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
4020f2d7 AD	117	{
	118	return base_addr + ((sock_num + 1) << 10);
	119	}
	120
7146f0d3	121	static int tifm_7xx1_switch_media(void *data)
4020f2d7	122	{
7146f0d3	123	struct tifm_adapter *fm = data;
4020f2d7 AD	124	unsigned long flags;
	125	tifm_media_id media_id;
	126	char *card_name = "xx";
7146f0d3	127	int cnt, rc;
6412d927 AD	128	struct tifm_dev *sock;
6412d927 AD	129	unsigned int socket_change_set;
4020f2d7	130
6412d927	131	while (1) {
7146f0d3 AD	132	rc = wait_event_interruptible(fm->change_set_notify,
	133	fm->socket_change_set);
	134	if (rc == -ERESTARTSYS)
	135	try_to_freeze();
	136
6412d927 AD	137	spin_lock_irqsave(&fm->lock, flags);
	138	socket_change_set = fm->socket_change_set;
	139	fm->socket_change_set = 0;
	140
	141	dev_dbg(fm->dev, "checking media set %x\n",
	142	socket_change_set);
	143
7146f0d3	144	if (kthread_should_stop())
6412d927	145	socket_change_set = (1 << fm->num_sockets) - 1;
4020f2d7	146	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7	147
6412d927	148	if (!socket_change_set)
7146f0d3	149	continue;
6412d927 AD	150
	151	spin_lock_irqsave(&fm->lock, flags);
	152	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	153	if (!(socket_change_set & (1 << cnt)))
	154	continue;
	155	sock = fm->sockets[cnt];
	156	if (sock) {
4020f2d7	157	printk(KERN_INFO DRIVER_NAME
6412d927 AD	158	": demand removing card from socket %d\n",
	159	cnt);
	160	fm->sockets[cnt] = NULL;
	161	spin_unlock_irqrestore(&fm->lock, flags);
	162	device_unregister(&sock->dev);
4020f2d7	163	spin_lock_irqsave(&fm->lock, flags);
6412d927 AD	164	writel(0x0e00,
	165	tifm_7xx1_sock_addr(fm->addr, cnt)
	166	+ SOCK_CONTROL);
	167	}
7146f0d3	168	if (kthread_should_stop())
6412d927 AD	169	continue;
	170
	171	spin_unlock_irqrestore(&fm->lock, flags);
	172	media_id = tifm_7xx1_toggle_sock_power(
	173	tifm_7xx1_sock_addr(fm->addr, cnt),
	174	fm->num_sockets == 2);
	175	if (media_id) {
	176	sock = tifm_alloc_device(fm);
	177	if (sock) {
	178	sock->addr = tifm_7xx1_sock_addr(fm->addr,
	179	cnt);
	180	sock->media_id = media_id;
	181	sock->socket_id = cnt;
	182	switch (media_id) {
	183	case 1:
	184	card_name = "xd";
	185	break;
	186	case 2:
	187	card_name = "ms";
	188	break;
	189	case 3:
	190	card_name = "sd";
	191	break;
	192	default:
	193	tifm_free_device(&sock->dev);
	194	spin_lock_irqsave(&fm->lock, flags);
	195	continue;
	196	}
	197	snprintf(sock->dev.bus_id, BUS_ID_SIZE,
	198	"tifm_%s%u:%u", card_name, fm->id, cnt);
	199	printk(KERN_INFO DRIVER_NAME
	200	": %s card detected in socket %d\n",
	201	card_name, cnt);
	202	if (!device_register(&sock->dev)) {
	203	spin_lock_irqsave(&fm->lock, flags);
	204	if (!fm->sockets[cnt]) {
	205	fm->sockets[cnt] = sock;
	206	sock = NULL;
	207	}
	208	spin_unlock_irqrestore(&fm->lock, flags);
	209	}
	210	if (sock)
	211	tifm_free_device(&sock->dev);
4020f2d7	212	}
6412d927 AD	213	spin_lock_irqsave(&fm->lock, flags);
	214	}
	215	}
	216
7146f0d3	217	if (!kthread_should_stop()) {
6412d927 AD	218	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	219	\| TIFM_IRQ_CARDMASK(socket_change_set),
	220	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	221	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	222	\| TIFM_IRQ_CARDMASK(socket_change_set),
	223	fm->addr + FM_SET_INTERRUPT_ENABLE);
	224	writel(TIFM_IRQ_ENABLE,
	225	fm->addr + FM_SET_INTERRUPT_ENABLE);
	226	spin_unlock_irqrestore(&fm->lock, flags);
6412d927 AD	227	} else {
	228	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	229	if (fm->sockets[cnt])
	230	fm->socket_change_set \|= 1 << cnt;
	231	}
	232	if (!fm->socket_change_set) {
	233	spin_unlock_irqrestore(&fm->lock, flags);
7146f0d3	234	return 0;
6412d927	235	} else {
4020f2d7	236	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	237	}
4020f2d7 AD	238	}
4020f2d7	239	}
7146f0d3	240	return 0;
4020f2d7 AD	241	}
4020f2d7 AD	242
7146f0d3 AD	243	#ifdef CONFIG_PM
7146f0d3 AD	244
4020f2d7 AD	245	static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
4020f2d7 AD	246	{
7146f0d3	247	dev_dbg(&dev->dev, "suspending host\n");
4020f2d7	248
7146f0d3 AD	249	pci_save_state(dev);
	250	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	251	pci_disable_device(dev);
	252	pci_set_power_state(dev, pci_choose_state(dev, state));
4020f2d7 AD	253	return 0;
	254	}
	255
	256	static int tifm_7xx1_resume(struct pci_dev *dev)
	257	{
	258	struct tifm_adapter *fm = pci_get_drvdata(dev);
7146f0d3	259	int cnt, rc;
4020f2d7	260	unsigned long flags;
7146f0d3	261	tifm_media_id new_ids[fm->num_sockets];
4020f2d7	262
7146f0d3	263	pci_set_power_state(dev, PCI_D0);
4020f2d7	264	pci_restore_state(dev);
7146f0d3 AD	265	rc = pci_enable_device(dev);
	266	if (rc)
	267	return rc;
	268	pci_set_master(dev);
	269
	270	dev_dbg(&dev->dev, "resuming host\n");
4020f2d7	271
7146f0d3 AD	272	for (cnt = 0; cnt < fm->num_sockets; cnt++)
	273	new_ids[cnt] = tifm_7xx1_toggle_sock_power(
	274	tifm_7xx1_sock_addr(fm->addr, cnt),
	275	fm->num_sockets == 2);
4020f2d7	276	spin_lock_irqsave(&fm->lock, flags);
7146f0d3 AD	277	fm->socket_change_set = 0;
	278	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	279	if (fm->sockets[cnt]) {
	280	if (fm->sockets[cnt]->media_id == new_ids[cnt])
	281	fm->socket_change_set \|= 1 << cnt;
	282
	283	fm->sockets[cnt]->media_id = new_ids[cnt];
	284	}
	285	}
	286
6412d927	287	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
7146f0d3 AD	288	fm->addr + FM_SET_INTERRUPT_ENABLE);
	289	if (!fm->socket_change_set) {
	290	spin_unlock_irqrestore(&fm->lock, flags);
	291	return 0;
	292	} else {
	293	fm->socket_change_set = 0;
	294	spin_unlock_irqrestore(&fm->lock, flags);
	295	}
	296
	297	wait_event_timeout(fm->change_set_notify, fm->socket_change_set, HZ);
	298
	299	spin_lock_irqsave(&fm->lock, flags);
	300	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	301	\| TIFM_IRQ_CARDMASK(fm->socket_change_set),
	302	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	303	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	304	\| TIFM_IRQ_CARDMASK(fm->socket_change_set),
	305	fm->addr + FM_SET_INTERRUPT_ENABLE);
	306	writel(TIFM_IRQ_ENABLE,
	307	fm->addr + FM_SET_INTERRUPT_ENABLE);
	308	fm->socket_change_set = 0;
	309
4020f2d7 AD	310	spin_unlock_irqrestore(&fm->lock, flags);
	311	return 0;
	312	}
	313
7146f0d3 AD	314	#else
	315
	316	#define tifm_7xx1_suspend NULL
	317	#define tifm_7xx1_resume NULL
	318
	319	#endif /* CONFIG_PM */
	320
4020f2d7 AD	321	static int tifm_7xx1_probe(struct pci_dev *dev,
	322	const struct pci_device_id *dev_id)
	323	{
	324	struct tifm_adapter *fm;
	325	int pci_dev_busy = 0;
	326	int rc;
	327
	328	rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	329	if (rc)
	330	return rc;
	331
	332	rc = pci_enable_device(dev);
	333	if (rc)
	334	return rc;
	335
	336	pci_set_master(dev);
	337
	338	rc = pci_request_regions(dev, DRIVER_NAME);
	339	if (rc) {
	340	pci_dev_busy = 1;
	341	goto err_out;
	342	}
	343
	344	pci_intx(dev, 1);
	345
	346	fm = tifm_alloc_adapter();
	347	if (!fm) {
	348	rc = -ENOMEM;
	349	goto err_out_int;
	350	}
	351
	352	fm->dev = &dev->dev;
6412d927 AD	353	fm->num_sockets = (dev->device == 0x803B) ? 2 : 4;
6412d927 AD	354	fm->sockets = kzalloc(sizeof(struct tifm_dev) fm->num_sockets,
4020f2d7 AD	355	GFP_KERNEL);
	356	if (!fm->sockets)
	357	goto err_out_free;
	358
4020f2d7 AD	359	fm->eject = tifm_7xx1_eject;
	360	pci_set_drvdata(dev, fm);
	361
	362	fm->addr = ioremap(pci_resource_start(dev, 0),
	363	pci_resource_len(dev, 0));
	364	if (!fm->addr)
	365	goto err_out_free;
	366
	367	rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
	368	if (rc)
	369	goto err_out_unmap;
	370
7146f0d3 AD	371	init_waitqueue_head(&fm->change_set_notify);
7146f0d3 AD	372	rc = tifm_add_adapter(fm, tifm_7xx1_switch_media);
4020f2d7 AD	373	if (rc)
	374	goto err_out_irq;
	375
	376	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
6412d927	377	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
4020f2d7	378	fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3	379	wake_up_process(fm->media_switcher);
4020f2d7 AD	380	return 0;
	381
	382	err_out_irq:
	383	free_irq(dev->irq, fm);
	384	err_out_unmap:
	385	iounmap(fm->addr);
	386	err_out_free:
	387	pci_set_drvdata(dev, NULL);
	388	tifm_free_adapter(fm);
	389	err_out_int:
	390	pci_intx(dev, 0);
	391	pci_release_regions(dev);
	392	err_out:
	393	if (!pci_dev_busy)
	394	pci_disable_device(dev);
	395	return rc;
	396	}
	397
	398	static void tifm_7xx1_remove(struct pci_dev *dev)
	399	{
	400	struct tifm_adapter *fm = pci_get_drvdata(dev);
	401	unsigned long flags;
	402
7146f0d3 AD	403	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	404	mmiowb();
	405	free_irq(dev->irq, fm);
	406
4020f2d7	407	spin_lock_irqsave(&fm->lock, flags);
7146f0d3	408	fm->socket_change_set = (1 << fm->num_sockets) - 1;
4020f2d7 AD	409	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	410
7146f0d3	411	kthread_stop(fm->media_switcher);
4020f2d7 AD	412
	413	tifm_remove_adapter(fm);
	414
e069d79d	415	pci_set_drvdata(dev, NULL);
4020f2d7 AD	416
	417	iounmap(fm->addr);
	418	pci_intx(dev, 0);
	419	pci_release_regions(dev);
	420
	421	pci_disable_device(dev);
	422	tifm_free_adapter(fm);
	423	}
	424
	425	static struct pci_device_id tifm_7xx1_pci_tbl [] = {
	426	{ PCI_VENDOR_ID_TI, 0x8033, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	427	0 }, /* xx21 - the one I have */
	428	{ PCI_VENDOR_ID_TI, 0x803B, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	429	0 }, /* xx12 - should be also supported */
	430	{ }
	431	};
	432
	433	static struct pci_driver tifm_7xx1_driver = {
	434	.name = DRIVER_NAME,
	435	.id_table = tifm_7xx1_pci_tbl,
	436	.probe = tifm_7xx1_probe,
	437	.remove = tifm_7xx1_remove,
	438	.suspend = tifm_7xx1_suspend,
	439	.resume = tifm_7xx1_resume,
	440	};
	441
	442	static int __init tifm_7xx1_init(void)
	443	{
	444	return pci_register_driver(&tifm_7xx1_driver);
	445	}
	446
	447	static void __exit tifm_7xx1_exit(void)
	448	{
	449	pci_unregister_driver(&tifm_7xx1_driver);
	450	}
	451
	452	MODULE_AUTHOR("Alex Dubov");
	453	MODULE_DESCRIPTION("TI FlashMedia host driver");
	454	MODULE_LICENSE("GPL");
	455	MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
	456	MODULE_VERSION(DRIVER_VERSION);
	457
	458	module_init(tifm_7xx1_init);
	459	module_exit(tifm_7xx1_exit);