[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 "0.8"

#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_dummy_eject(struct tifm_adapter *fm,
				  struct tifm_dev *sock)
{
}

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)
{
	unsigned int s_state;
	int cnt;

	writel(0x0e00, sock_addr + SOCK_CONTROL);

	for (cnt = 16; cnt <= 256; cnt <<= 1) {
		if (!(TIFM_SOCK_STATE_POWERED
		      & readl(sock_addr + SOCK_PRESENT_STATE)))
			break;

		msleep(cnt);
	}

	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
		return 0;

	writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED,
	       sock_addr + SOCK_CONTROL);

	/* xd needs some extra time before power on */
	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7)
	    == TIFM_TYPE_XD)
		msleep(40);

	writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
	/* wait for power to stabilize */
	msleep(20);
	for (cnt = 16; cnt <= 256; cnt <<= 1) {
		if ((TIFM_SOCK_STATE_POWERED
		     & readl(sock_addr + SOCK_PRESENT_STATE)))
			break;

		msleep(cnt);
	}

	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;
	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->cdev.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
			       "%s : demand removing card from socket %u:%u\n",
			       fm->cdev.class_id, fm->id, 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));

		// tifm_alloc_device will check if media_id is valid
		sock = tifm_alloc_device(fm, cnt, media_id);
		if (sock) {
			sock->addr = tifm_7xx1_sock_addr(fm->addr, 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 rc;
	unsigned int good_sockets = 0, bad_sockets = 0;
	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 (rc = 0; rc < fm->num_sockets; rc++)
		new_ids[rc] = tifm_7xx1_toggle_sock_power(
					tifm_7xx1_sock_addr(fm->addr, rc));
	spin_lock_irqsave(&fm->lock, flags);
	for (rc = 0; rc < fm->num_sockets; rc++) {
		if (fm->sockets[rc]) {
			if (fm->sockets[rc]->type == new_ids[rc])
				good_sockets |= 1 << rc;
			else
				bad_sockets |= 1 << rc;
		}
	}

	writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
	       fm->addr + FM_SET_INTERRUPT_ENABLE);
	dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n",
		good_sockets, bad_sockets);

	fm->socket_change_set = 0;
	if (good_sockets) {
		fm->finish_me = &finish_resume;
		spin_unlock_irqrestore(&fm->lock, flags);
		rc = wait_for_completion_timeout(&finish_resume, HZ);
		dev_dbg(&dev->dev, "wait returned %d\n", rc);
		writel(TIFM_IRQ_FIFOMASK(good_sockets)
		       | TIFM_IRQ_CARDMASK(good_sockets),
		       fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
		writel(TIFM_IRQ_FIFOMASK(good_sockets)
		       | TIFM_IRQ_CARDMASK(good_sockets),
		       fm->addr + FM_SET_INTERRUPT_ENABLE);
		spin_lock_irqsave(&fm->lock, flags);
		fm->finish_me = NULL;
		fm->socket_change_set ^= good_sockets & fm->socket_change_set;
	}

	fm->socket_change_set |= bad_sockets;
	if (fm->socket_change_set)
		tifm_queue_work(&fm->media_switcher);

	spin_unlock_irqrestore(&fm->lock, flags);
	writel(TIFM_IRQ_ENABLE,
	       fm->addr + FM_SET_INTERRUPT_ENABLE);

	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(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
				? 4 : 2, &dev->dev);
	if (!fm) {
		rc = -ENOMEM;
		goto err_out_int;
	}

	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, SA_SHIRQ, DRIVER_NAME, fm);
	if (rc)
		goto err_out_unmap;

	rc = tifm_add_adapter(fm);
	if (rc)
		goto err_out_irq;

	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);

	fm->eject = tifm_7xx1_dummy_eject;
	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	mmiowb();
	free_irq(dev->irq, fm);

	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	24
6113ed73 AD	25	static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm,
	26	struct tifm_dev *sock)
	27	{
	28	}
	29
4020f2d7 AD	30	static void tifm_7xx1_eject(struct tifm_adapter fm, struct tifm_dev sock)
4020f2d7 AD	31	{
4020f2d7 AD	32	unsigned long flags;
	33
	34	spin_lock_irqsave(&fm->lock, flags);
7146f0d3	35	fm->socket_change_set \|= 1 << sock->socket_id;
3540af8f	36	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	37	spin_unlock_irqrestore(&fm->lock, flags);
	38	}
	39
7d12e780	40	static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
4020f2d7 AD	41	{
4020f2d7 AD	42	struct tifm_adapter *fm = dev_id;
217334d1	43	struct tifm_dev *sock;
4020f2d7	44	unsigned int irq_status;
4552f0cb	45	unsigned int cnt;
4020f2d7 AD	46
	47	spin_lock(&fm->lock);
	48	irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
	49	if (irq_status == 0 \|\| irq_status == (~0)) {
	50	spin_unlock(&fm->lock);
	51	return IRQ_NONE;
	52	}
	53
	54	if (irq_status & TIFM_IRQ_ENABLE) {
	55	writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	56
8b40adab	57	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
217334d1	58	sock = fm->sockets[cnt];
4552f0cb AD	59	if (sock) {
	60	if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
	61	sock->data_event(sock);
	62	if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
	63	sock->card_event(sock);
	64	}
4020f2d7	65	}
6412d927	66
8b40adab AD	67	fm->socket_change_set \|= irq_status
8b40adab AD	68	& ((1 << fm->num_sockets) - 1);
4020f2d7 AD	69	}
	70	writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
	71
3540af8f AD	72	if (fm->finish_me)
	73	complete_all(fm->finish_me);
	74	else if (!fm->socket_change_set)
7146f0d3 AD	75	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3 AD	76	else
3540af8f	77	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	78
	79	spin_unlock(&fm->lock);
	80	return IRQ_HANDLED;
	81	}
	82
342c0ec4	83	static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr)
4020f2d7 AD	84	{
	85	unsigned int s_state;
	86	int cnt;
	87
	88	writel(0x0e00, sock_addr + SOCK_CONTROL);
	89
342c0ec4	90	for (cnt = 16; cnt <= 256; cnt <<= 1) {
8b40adab AD	91	if (!(TIFM_SOCK_STATE_POWERED
8b40adab AD	92	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7	93	break;
342c0ec4 AD	94
342c0ec4 AD	95	msleep(cnt);
4020f2d7 AD	96	}
	97
	98	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	99	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
e23f2b8a	100	return 0;
4020f2d7	101
342c0ec4 AD	102	writel(readl(sock_addr + SOCK_CONTROL) \| TIFM_CTRL_LED,
342c0ec4 AD	103	sock_addr + SOCK_CONTROL);
4020f2d7	104
342c0ec4 AD	105	/* xd needs some extra time before power on */
	106	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7)
	107	== TIFM_TYPE_XD)
	108	msleep(40);
	109
	110	writel((s_state & 7) \| 0x0c00, sock_addr + SOCK_CONTROL);
	111	/* wait for power to stabilize */
	112	msleep(20);
	113	for (cnt = 16; cnt <= 256; cnt <<= 1) {
8b40adab AD	114	if ((TIFM_SOCK_STATE_POWERED
8b40adab AD	115	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7	116	break;
342c0ec4 AD	117
342c0ec4 AD	118	msleep(cnt);
4020f2d7 AD	119	}
4020f2d7 AD	120
342c0ec4 AD	121	writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
342c0ec4 AD	122	sock_addr + SOCK_CONTROL);
4020f2d7 AD	123
	124	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
	125	}
	126
e069d79d AV	127	inline static char __iomem *
e069d79d AV	128	tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
4020f2d7 AD	129	{
	130	return base_addr + ((sock_num + 1) << 10);
	131	}
	132
3540af8f	133	static void tifm_7xx1_switch_media(struct work_struct *work)
4020f2d7	134	{
3540af8f AD	135	struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
3540af8f AD	136	media_switcher);
4020f2d7	137	unsigned long flags;
e23f2b8a	138	unsigned char media_id;
3540af8f	139	int cnt;
6412d927 AD	140	struct tifm_dev *sock;
6412d927 AD	141	unsigned int socket_change_set;
4020f2d7	142
3540af8f AD	143	spin_lock_irqsave(&fm->lock, flags);
	144	socket_change_set = fm->socket_change_set;
	145	fm->socket_change_set = 0;
6412d927	146
6113ed73	147	dev_dbg(fm->cdev.dev, "checking media set %x\n",
3540af8f	148	socket_change_set);
6412d927	149
3540af8f	150	if (!socket_change_set) {
4020f2d7	151	spin_unlock_irqrestore(&fm->lock, flags);
3540af8f AD	152	return;
3540af8f AD	153	}
4020f2d7	154
2428a8fe AD	155	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	156	if (!(socket_change_set & (1 << cnt)))
	157	continue;
	158	sock = fm->sockets[cnt];
	159	if (sock) {
	160	printk(KERN_INFO
	161	"%s : demand removing card from socket %u:%u\n",
	162	fm->cdev.class_id, fm->id, cnt);
	163	fm->sockets[cnt] = NULL;
6412d927	164	spin_unlock_irqrestore(&fm->lock, flags);
2428a8fe AD	165	device_unregister(&sock->dev);
	166	spin_lock_irqsave(&fm->lock, flags);
	167	writel(0x0e00, tifm_7xx1_sock_addr(fm->addr, cnt)
	168	+ SOCK_CONTROL);
	169	}
	170
	171	spin_unlock_irqrestore(&fm->lock, flags);
	172
	173	media_id = tifm_7xx1_toggle_sock_power(
	174	tifm_7xx1_sock_addr(fm->addr, cnt));
	175
	176	// tifm_alloc_device will check if media_id is valid
	177	sock = tifm_alloc_device(fm, cnt, media_id);
	178	if (sock) {
	179	sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt);
	180
	181	if (!device_register(&sock->dev)) {
6412d927	182	spin_lock_irqsave(&fm->lock, flags);
2428a8fe AD	183	if (!fm->sockets[cnt]) {
	184	fm->sockets[cnt] = sock;
	185	sock = NULL;
	186	}
	187	spin_unlock_irqrestore(&fm->lock, flags);
6412d927	188	}
2428a8fe AD	189	if (sock)
2428a8fe AD	190	tifm_free_device(&sock->dev);
6412d927	191	}
2428a8fe AD	192	spin_lock_irqsave(&fm->lock, flags);
2428a8fe AD	193	}
6412d927	194
3540af8f AD	195	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	196	\| TIFM_IRQ_CARDMASK(socket_change_set),
	197	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	198
	199	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	200	\| TIFM_IRQ_CARDMASK(socket_change_set),
	201	fm->addr + FM_SET_INTERRUPT_ENABLE);
	202
	203	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	204	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	205	}
4020f2d7 AD	206
7146f0d3 AD	207	#ifdef CONFIG_PM
7146f0d3 AD	208
4020f2d7 AD	209	static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
4020f2d7 AD	210	{
7146f0d3	211	dev_dbg(&dev->dev, "suspending host\n");
4020f2d7	212
7146f0d3 AD	213	pci_save_state(dev);
	214	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	215	pci_disable_device(dev);
	216	pci_set_power_state(dev, pci_choose_state(dev, state));
4020f2d7 AD	217	return 0;
	218	}
	219
	220	static int tifm_7xx1_resume(struct pci_dev *dev)
	221	{
	222	struct tifm_adapter *fm = pci_get_drvdata(dev);
88de1b2f AD	223	int rc;
88de1b2f AD	224	unsigned int good_sockets = 0, bad_sockets = 0;
4020f2d7	225	unsigned long flags;
e23f2b8a	226	unsigned char new_ids[fm->num_sockets];
3540af8f	227	DECLARE_COMPLETION_ONSTACK(finish_resume);
4020f2d7	228
7146f0d3	229	pci_set_power_state(dev, PCI_D0);
4020f2d7	230	pci_restore_state(dev);
7146f0d3 AD	231	rc = pci_enable_device(dev);
	232	if (rc)
	233	return rc;
	234	pci_set_master(dev);
	235
	236	dev_dbg(&dev->dev, "resuming host\n");
4020f2d7	237
88de1b2f AD	238	for (rc = 0; rc < fm->num_sockets; rc++)
	239	new_ids[rc] = tifm_7xx1_toggle_sock_power(
	240	tifm_7xx1_sock_addr(fm->addr, rc));
4020f2d7	241	spin_lock_irqsave(&fm->lock, flags);
88de1b2f AD	242	for (rc = 0; rc < fm->num_sockets; rc++) {
	243	if (fm->sockets[rc]) {
	244	if (fm->sockets[rc]->type == new_ids[rc])
	245	good_sockets \|= 1 << rc;
	246	else
	247	bad_sockets \|= 1 << rc;
7146f0d3 AD	248	}
	249	}
	250
6412d927	251	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
7146f0d3	252	fm->addr + FM_SET_INTERRUPT_ENABLE);
88de1b2f AD	253	dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n",
	254	good_sockets, bad_sockets);
	255
	256	fm->socket_change_set = 0;
	257	if (good_sockets) {
3540af8f	258	fm->finish_me = &finish_resume;
7146f0d3	259	spin_unlock_irqrestore(&fm->lock, flags);
88de1b2f AD	260	rc = wait_for_completion_timeout(&finish_resume, HZ);
	261	dev_dbg(&dev->dev, "wait returned %d\n", rc);
	262	writel(TIFM_IRQ_FIFOMASK(good_sockets)
	263	\| TIFM_IRQ_CARDMASK(good_sockets),
	264	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	265	writel(TIFM_IRQ_FIFOMASK(good_sockets)
	266	\| TIFM_IRQ_CARDMASK(good_sockets),
	267	fm->addr + FM_SET_INTERRUPT_ENABLE);
	268	spin_lock_irqsave(&fm->lock, flags);
	269	fm->finish_me = NULL;
	270	fm->socket_change_set ^= good_sockets & fm->socket_change_set;
7146f0d3 AD	271	}
7146f0d3 AD	272
88de1b2f AD	273	fm->socket_change_set \|= bad_sockets;
	274	if (fm->socket_change_set)
	275	tifm_queue_work(&fm->media_switcher);
7146f0d3	276
88de1b2f	277	spin_unlock_irqrestore(&fm->lock, flags);
7146f0d3 AD	278	writel(TIFM_IRQ_ENABLE,
7146f0d3 AD	279	fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3	280
4020f2d7 AD	281	return 0;
	282	}
	283
7146f0d3 AD	284	#else
	285
	286	#define tifm_7xx1_suspend NULL
	287	#define tifm_7xx1_resume NULL
	288
	289	#endif /* CONFIG_PM */
	290
4020f2d7	291	static int tifm_7xx1_probe(struct pci_dev *dev,
8b40adab	292	const struct pci_device_id *dev_id)
4020f2d7 AD	293	{
	294	struct tifm_adapter *fm;
	295	int pci_dev_busy = 0;
	296	int rc;
	297
	298	rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	299	if (rc)
	300	return rc;
	301
	302	rc = pci_enable_device(dev);
	303	if (rc)
	304	return rc;
	305
	306	pci_set_master(dev);
	307
	308	rc = pci_request_regions(dev, DRIVER_NAME);
	309	if (rc) {
	310	pci_dev_busy = 1;
	311	goto err_out;
	312	}
	313
	314	pci_intx(dev, 1);
	315
6113ed73 AD	316	fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
6113ed73 AD	317	? 4 : 2, &dev->dev);
4020f2d7 AD	318	if (!fm) {
	319	rc = -ENOMEM;
	320	goto err_out_int;
	321	}
	322
3540af8f	323	INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
4020f2d7 AD	324	fm->eject = tifm_7xx1_eject;
	325	pci_set_drvdata(dev, fm);
	326
	327	fm->addr = ioremap(pci_resource_start(dev, 0),
8b40adab	328	pci_resource_len(dev, 0));
4020f2d7 AD	329	if (!fm->addr)
	330	goto err_out_free;
	331
6113ed73	332	rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
4020f2d7 AD	333	if (rc)
	334	goto err_out_unmap;
	335
3540af8f	336	rc = tifm_add_adapter(fm);
4020f2d7 AD	337	if (rc)
	338	goto err_out_irq;
	339
6412d927	340	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
8b40adab	341	fm->addr + FM_SET_INTERRUPT_ENABLE);
4020f2d7 AD	342	return 0;
	343
	344	err_out_irq:
	345	free_irq(dev->irq, fm);
	346	err_out_unmap:
	347	iounmap(fm->addr);
	348	err_out_free:
	349	pci_set_drvdata(dev, NULL);
	350	tifm_free_adapter(fm);
	351	err_out_int:
	352	pci_intx(dev, 0);
	353	pci_release_regions(dev);
	354	err_out:
	355	if (!pci_dev_busy)
	356	pci_disable_device(dev);
	357	return rc;
	358	}
	359
	360	static void tifm_7xx1_remove(struct pci_dev *dev)
	361	{
	362	struct tifm_adapter *fm = pci_get_drvdata(dev);
4020f2d7	363
6113ed73	364	fm->eject = tifm_7xx1_dummy_eject;
7146f0d3 AD	365	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	366	mmiowb();
	367	free_irq(dev->irq, fm);
	368
4020f2d7 AD	369	tifm_remove_adapter(fm);
4020f2d7 AD	370
e069d79d	371	pci_set_drvdata(dev, NULL);
4020f2d7 AD	372
	373	iounmap(fm->addr);
	374	pci_intx(dev, 0);
	375	pci_release_regions(dev);
	376
	377	pci_disable_device(dev);
	378	tifm_free_adapter(fm);
	379	}
	380
	381	static struct pci_device_id tifm_7xx1_pci_tbl [] = {
b5ad6761 AD	382	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID,
	383	PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */
	384	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID,
	385	PCI_ANY_ID, 0, 0, 0 },
	386	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID,
	387	PCI_ANY_ID, 0, 0, 0 },
4020f2d7 AD	388	{ }
	389	};
	390
	391	static struct pci_driver tifm_7xx1_driver = {
	392	.name = DRIVER_NAME,
	393	.id_table = tifm_7xx1_pci_tbl,
	394	.probe = tifm_7xx1_probe,
	395	.remove = tifm_7xx1_remove,
	396	.suspend = tifm_7xx1_suspend,
	397	.resume = tifm_7xx1_resume,
	398	};
	399
	400	static int __init tifm_7xx1_init(void)
	401	{
	402	return pci_register_driver(&tifm_7xx1_driver);
	403	}
	404
	405	static void __exit tifm_7xx1_exit(void)
	406	{
	407	pci_unregister_driver(&tifm_7xx1_driver);
	408	}
	409
	410	MODULE_AUTHOR("Alex Dubov");
	411	MODULE_DESCRIPTION("TI FlashMedia host driver");
	412	MODULE_LICENSE("GPL");
	413	MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
	414	MODULE_VERSION(DRIVER_VERSION);
	415
	416	module_init(tifm_7xx1_init);
	417	module_exit(tifm_7xx1_exit);