[deliverable/linux.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 "0.8"

#define TIFM_IRQ_ENABLE           0x80000000
#define TIFM_IRQ_SOCKMASK(x)      (x)
#define TIFM_IRQ_CARDMASK(x)      ((x) << 8)
#define TIFM_IRQ_FIFOMASK(x)      ((x) << 16)
#define TIFM_IRQ_SETALL           0xffffffff

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;
	tifm_queue_work(&fm->media_switcher);
	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 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];
			if (sock) {
				if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
					sock->data_event(sock);
				if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
					sock->card_event(sock);
			}
		}

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

	if (fm->finish_me)
		complete_all(fm->finish_me);
	else if (!fm->socket_change_set)
		writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	else
		tifm_queue_work(&fm->media_switcher);

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

static unsigned char 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 0;

	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 void tifm_7xx1_switch_media(struct work_struct *work)
{
	struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
					       media_switcher);
	unsigned long flags;
	unsigned char media_id;
	char *card_name = "xx";
	int cnt;
	struct tifm_dev *sock;
	unsigned int socket_change_set;

	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 (!socket_change_set) {
		spin_unlock_irqrestore(&fm->lock, flags);
		return;
	}

		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);
			}

			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->type = 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);
			}
		}

	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);
}

#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;
	unsigned char new_ids[fm->num_sockets];
	DECLARE_COMPLETION_ONSTACK(finish_resume);

	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]->type == new_ids[cnt])
				fm->socket_change_set |= 1 << cnt;

			fm->sockets[cnt]->type = 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;
		fm->finish_me = &finish_resume;
		spin_unlock_irqrestore(&fm->lock, flags);
	}

	wait_for_completion_timeout(&finish_resume, HZ);

	spin_lock_irqsave(&fm->lock, flags);
	fm->finish_me = NULL;
	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;

	INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
	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;

	rc = tifm_add_adapter(fm);
	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);

	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);

	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"
4552f0cb AD	17	#define DRIVER_VERSION "0.8"
	18
	19	#define TIFM_IRQ_ENABLE 0x80000000
	20	#define TIFM_IRQ_SOCKMASK(x) (x)
	21	#define TIFM_IRQ_CARDMASK(x) ((x) << 8)
	22	#define TIFM_IRQ_FIFOMASK(x) ((x) << 16)
	23	#define TIFM_IRQ_SETALL 0xffffffff
4020f2d7 AD	24
	25	static void tifm_7xx1_eject(struct tifm_adapter fm, struct tifm_dev sock)
	26	{
4020f2d7 AD	27	unsigned long flags;
	28
	29	spin_lock_irqsave(&fm->lock, flags);
7146f0d3	30	fm->socket_change_set \|= 1 << sock->socket_id;
3540af8f	31	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	32	spin_unlock_irqrestore(&fm->lock, flags);
	33	}
	34
7d12e780	35	static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
4020f2d7 AD	36	{
4020f2d7 AD	37	struct tifm_adapter *fm = dev_id;
217334d1	38	struct tifm_dev *sock;
4020f2d7	39	unsigned int irq_status;
4552f0cb	40	unsigned int cnt;
4020f2d7 AD	41
	42	spin_lock(&fm->lock);
	43	irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
	44	if (irq_status == 0 \|\| irq_status == (~0)) {
	45	spin_unlock(&fm->lock);
	46	return IRQ_NONE;
	47	}
	48
	49	if (irq_status & TIFM_IRQ_ENABLE) {
	50	writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	51
8b40adab	52	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
217334d1	53	sock = fm->sockets[cnt];
4552f0cb AD	54	if (sock) {
	55	if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
	56	sock->data_event(sock);
	57	if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
	58	sock->card_event(sock);
	59	}
4020f2d7	60	}
6412d927	61
8b40adab AD	62	fm->socket_change_set \|= irq_status
8b40adab AD	63	& ((1 << fm->num_sockets) - 1);
4020f2d7 AD	64	}
	65	writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
	66
3540af8f AD	67	if (fm->finish_me)
	68	complete_all(fm->finish_me);
	69	else if (!fm->socket_change_set)
7146f0d3 AD	70	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3 AD	71	else
3540af8f	72	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	73
	74	spin_unlock(&fm->lock);
	75	return IRQ_HANDLED;
	76	}
	77
e23f2b8a	78	static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr,
8b40adab	79	int is_x2)
4020f2d7 AD	80	{
	81	unsigned int s_state;
	82	int cnt;
	83
	84	writel(0x0e00, sock_addr + SOCK_CONTROL);
	85
	86	for (cnt = 0; cnt < 100; cnt++) {
8b40adab AD	87	if (!(TIFM_SOCK_STATE_POWERED
8b40adab AD	88	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7 AD	89	break;
	90	msleep(10);
	91	}
	92
	93	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	94	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
e23f2b8a	95	return 0;
4020f2d7 AD	96
	97	if (is_x2) {
	98	writel((s_state & 7) \| 0x0c00, sock_addr + SOCK_CONTROL);
	99	} else {
	100	// SmartMedia cards need extra 40 msec
	101	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1)
	102	msleep(40);
	103	writel(readl(sock_addr + SOCK_CONTROL) \| TIFM_CTRL_LED,
	104	sock_addr + SOCK_CONTROL);
	105	msleep(10);
	106	writel((s_state & 0x7) \| 0x0c00 \| TIFM_CTRL_LED,
	107	sock_addr + SOCK_CONTROL);
	108	}
	109
	110	for (cnt = 0; cnt < 100; cnt++) {
8b40adab AD	111	if ((TIFM_SOCK_STATE_POWERED
8b40adab AD	112	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7 AD	113	break;
	114	msleep(10);
	115	}
	116
	117	if (!is_x2)
	118	writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
	119	sock_addr + SOCK_CONTROL);
	120
	121	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
	122	}
	123
e069d79d AV	124	inline static char __iomem *
e069d79d AV	125	tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
4020f2d7 AD	126	{
	127	return base_addr + ((sock_num + 1) << 10);
	128	}
	129
3540af8f	130	static void tifm_7xx1_switch_media(struct work_struct *work)
4020f2d7	131	{
3540af8f AD	132	struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
3540af8f AD	133	media_switcher);
4020f2d7	134	unsigned long flags;
e23f2b8a	135	unsigned char media_id;
4020f2d7	136	char *card_name = "xx";
3540af8f	137	int cnt;
6412d927 AD	138	struct tifm_dev *sock;
6412d927 AD	139	unsigned int socket_change_set;
4020f2d7	140
3540af8f AD	141	spin_lock_irqsave(&fm->lock, flags);
	142	socket_change_set = fm->socket_change_set;
	143	fm->socket_change_set = 0;
6412d927	144
3540af8f AD	145	dev_dbg(fm->dev, "checking media set %x\n",
3540af8f AD	146	socket_change_set);
6412d927	147
3540af8f	148	if (!socket_change_set) {
4020f2d7	149	spin_unlock_irqrestore(&fm->lock, flags);
3540af8f AD	150	return;
3540af8f AD	151	}
4020f2d7	152
6412d927 AD	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	}
6412d927 AD	169
	170	spin_unlock_irqrestore(&fm->lock, flags);
	171	media_id = tifm_7xx1_toggle_sock_power(
	172	tifm_7xx1_sock_addr(fm->addr, cnt),
	173	fm->num_sockets == 2);
	174	if (media_id) {
	175	sock = tifm_alloc_device(fm);
	176	if (sock) {
	177	sock->addr = tifm_7xx1_sock_addr(fm->addr,
8b40adab	178	cnt);
e23f2b8a	179	sock->type = media_id;
6412d927 AD	180	sock->socket_id = cnt;
	181	switch (media_id) {
	182	case 1:
	183	card_name = "xd";
	184	break;
	185	case 2:
	186	card_name = "ms";
	187	break;
	188	case 3:
	189	card_name = "sd";
	190	break;
	191	default:
	192	tifm_free_device(&sock->dev);
	193	spin_lock_irqsave(&fm->lock, flags);
	194	continue;
	195	}
	196	snprintf(sock->dev.bus_id, BUS_ID_SIZE,
8b40adab AD	197	"tifm_%s%u:%u", card_name,
8b40adab AD	198	fm->id, cnt);
6412d927	199	printk(KERN_INFO DRIVER_NAME
8b40adab AD	200	": %s card detected in socket %d\n",
8b40adab AD	201	card_name, cnt);
6412d927 AD	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
3540af8f AD	217	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	218	\| TIFM_IRQ_CARDMASK(socket_change_set),
	219	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	220
	221	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	222	\| TIFM_IRQ_CARDMASK(socket_change_set),
	223	fm->addr + FM_SET_INTERRUPT_ENABLE);
	224
	225	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	226	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	227	}
4020f2d7 AD	228
7146f0d3 AD	229	#ifdef CONFIG_PM
7146f0d3 AD	230
4020f2d7 AD	231	static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
4020f2d7 AD	232	{
7146f0d3	233	dev_dbg(&dev->dev, "suspending host\n");
4020f2d7	234
7146f0d3 AD	235	pci_save_state(dev);
	236	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	237	pci_disable_device(dev);
	238	pci_set_power_state(dev, pci_choose_state(dev, state));
4020f2d7 AD	239	return 0;
	240	}
	241
	242	static int tifm_7xx1_resume(struct pci_dev *dev)
	243	{
	244	struct tifm_adapter *fm = pci_get_drvdata(dev);
7146f0d3	245	int cnt, rc;
4020f2d7	246	unsigned long flags;
e23f2b8a	247	unsigned char new_ids[fm->num_sockets];
3540af8f	248	DECLARE_COMPLETION_ONSTACK(finish_resume);
4020f2d7	249
7146f0d3	250	pci_set_power_state(dev, PCI_D0);
4020f2d7	251	pci_restore_state(dev);
7146f0d3 AD	252	rc = pci_enable_device(dev);
	253	if (rc)
	254	return rc;
	255	pci_set_master(dev);
	256
	257	dev_dbg(&dev->dev, "resuming host\n");
4020f2d7	258
7146f0d3 AD	259	for (cnt = 0; cnt < fm->num_sockets; cnt++)
	260	new_ids[cnt] = tifm_7xx1_toggle_sock_power(
	261	tifm_7xx1_sock_addr(fm->addr, cnt),
	262	fm->num_sockets == 2);
4020f2d7	263	spin_lock_irqsave(&fm->lock, flags);
7146f0d3 AD	264	fm->socket_change_set = 0;
	265	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	266	if (fm->sockets[cnt]) {
e23f2b8a	267	if (fm->sockets[cnt]->type == new_ids[cnt])
7146f0d3 AD	268	fm->socket_change_set \|= 1 << cnt;
7146f0d3 AD	269
e23f2b8a	270	fm->sockets[cnt]->type = new_ids[cnt];
7146f0d3 AD	271	}
	272	}
	273
6412d927	274	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
7146f0d3 AD	275	fm->addr + FM_SET_INTERRUPT_ENABLE);
	276	if (!fm->socket_change_set) {
	277	spin_unlock_irqrestore(&fm->lock, flags);
	278	return 0;
	279	} else {
	280	fm->socket_change_set = 0;
3540af8f	281	fm->finish_me = &finish_resume;
7146f0d3 AD	282	spin_unlock_irqrestore(&fm->lock, flags);
	283	}
	284
3540af8f	285	wait_for_completion_timeout(&finish_resume, HZ);
7146f0d3 AD	286
7146f0d3 AD	287	spin_lock_irqsave(&fm->lock, flags);
3540af8f	288	fm->finish_me = NULL;
7146f0d3 AD	289	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	290	\| TIFM_IRQ_CARDMASK(fm->socket_change_set),
	291	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	292	writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
	293	\| TIFM_IRQ_CARDMASK(fm->socket_change_set),
	294	fm->addr + FM_SET_INTERRUPT_ENABLE);
	295	writel(TIFM_IRQ_ENABLE,
	296	fm->addr + FM_SET_INTERRUPT_ENABLE);
	297	fm->socket_change_set = 0;
	298
4020f2d7 AD	299	spin_unlock_irqrestore(&fm->lock, flags);
	300	return 0;
	301	}
	302
7146f0d3 AD	303	#else
	304
	305	#define tifm_7xx1_suspend NULL
	306	#define tifm_7xx1_resume NULL
	307
	308	#endif /* CONFIG_PM */
	309
4020f2d7	310	static int tifm_7xx1_probe(struct pci_dev *dev,
8b40adab	311	const struct pci_device_id *dev_id)
4020f2d7 AD	312	{
	313	struct tifm_adapter *fm;
	314	int pci_dev_busy = 0;
	315	int rc;
	316
	317	rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	318	if (rc)
	319	return rc;
	320
	321	rc = pci_enable_device(dev);
	322	if (rc)
	323	return rc;
	324
	325	pci_set_master(dev);
	326
	327	rc = pci_request_regions(dev, DRIVER_NAME);
	328	if (rc) {
	329	pci_dev_busy = 1;
	330	goto err_out;
	331	}
	332
	333	pci_intx(dev, 1);
	334
	335	fm = tifm_alloc_adapter();
	336	if (!fm) {
	337	rc = -ENOMEM;
	338	goto err_out_int;
	339	}
	340
	341	fm->dev = &dev->dev;
b5ad6761 AD	342	fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
b5ad6761 AD	343	? 4 : 2;
6412d927	344	fm->sockets = kzalloc(sizeof(struct tifm_dev) fm->num_sockets,
8b40adab	345	GFP_KERNEL);
4020f2d7 AD	346	if (!fm->sockets)
	347	goto err_out_free;
	348
3540af8f	349	INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
4020f2d7 AD	350	fm->eject = tifm_7xx1_eject;
	351	pci_set_drvdata(dev, fm);
	352
	353	fm->addr = ioremap(pci_resource_start(dev, 0),
8b40adab	354	pci_resource_len(dev, 0));
4020f2d7 AD	355	if (!fm->addr)
	356	goto err_out_free;
	357
38515e90	358	rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
4020f2d7 AD	359	if (rc)
	360	goto err_out_unmap;
	361
3540af8f	362	rc = tifm_add_adapter(fm);
4020f2d7 AD	363	if (rc)
	364	goto err_out_irq;
	365
	366	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
6412d927	367	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
8b40adab	368	fm->addr + FM_SET_INTERRUPT_ENABLE);
3540af8f	369
4020f2d7 AD	370	return 0;
	371
	372	err_out_irq:
	373	free_irq(dev->irq, fm);
	374	err_out_unmap:
	375	iounmap(fm->addr);
	376	err_out_free:
	377	pci_set_drvdata(dev, NULL);
	378	tifm_free_adapter(fm);
	379	err_out_int:
	380	pci_intx(dev, 0);
	381	pci_release_regions(dev);
	382	err_out:
	383	if (!pci_dev_busy)
	384	pci_disable_device(dev);
	385	return rc;
	386	}
	387
	388	static void tifm_7xx1_remove(struct pci_dev *dev)
	389	{
	390	struct tifm_adapter *fm = pci_get_drvdata(dev);
	391	unsigned long flags;
	392
7146f0d3 AD	393	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	394	mmiowb();
	395	free_irq(dev->irq, fm);
	396
4020f2d7	397	spin_lock_irqsave(&fm->lock, flags);
7146f0d3	398	fm->socket_change_set = (1 << fm->num_sockets) - 1;
4020f2d7 AD	399	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	400
4020f2d7 AD	401	tifm_remove_adapter(fm);
4020f2d7 AD	402
e069d79d	403	pci_set_drvdata(dev, NULL);
4020f2d7 AD	404
	405	iounmap(fm->addr);
	406	pci_intx(dev, 0);
	407	pci_release_regions(dev);
	408
	409	pci_disable_device(dev);
	410	tifm_free_adapter(fm);
	411	}
	412
	413	static struct pci_device_id tifm_7xx1_pci_tbl [] = {
b5ad6761 AD	414	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID,
	415	PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */
	416	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID,
	417	PCI_ANY_ID, 0, 0, 0 },
	418	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID,
	419	PCI_ANY_ID, 0, 0, 0 },
4020f2d7 AD	420	{ }
	421	};
	422
	423	static struct pci_driver tifm_7xx1_driver = {
	424	.name = DRIVER_NAME,
	425	.id_table = tifm_7xx1_pci_tbl,
	426	.probe = tifm_7xx1_probe,
	427	.remove = tifm_7xx1_remove,
	428	.suspend = tifm_7xx1_suspend,
	429	.resume = tifm_7xx1_resume,
	430	};
	431
	432	static int __init tifm_7xx1_init(void)
	433	{
	434	return pci_register_driver(&tifm_7xx1_driver);
	435	}
	436
	437	static void __exit tifm_7xx1_exit(void)
	438	{
	439	pci_unregister_driver(&tifm_7xx1_driver);
	440	}
	441
	442	MODULE_AUTHOR("Alex Dubov");
	443	MODULE_DESCRIPTION("TI FlashMedia host driver");
	444	MODULE_LICENSE("GPL");
	445	MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
	446	MODULE_VERSION(DRIVER_VERSION);
	447
	448	module_init(tifm_7xx1_init);
	449	module_exit(tifm_7xx1_exit);