[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>

#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, 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 & TIFM_CTRL_POWER_MASK) | 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 void tifm_7xx1_sock_power_off(char __iomem *sock_addr)
{
	writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL),
	       sock_addr + SOCK_CONTROL);
}

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);
	struct tifm_dev *sock;
	char __iomem *sock_addr;
	unsigned long flags;
	unsigned char media_id;
	unsigned int socket_change_set, cnt;

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

	dev_dbg(fm->dev.parent, "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->dev.bus_id, fm->id, cnt);
			fm->sockets[cnt] = NULL;
			sock_addr = sock->addr;
			spin_unlock_irqrestore(&fm->lock, flags);
			device_unregister(&sock->dev);
			spin_lock_irqsave(&fm->lock, flags);
			tifm_7xx1_sock_power_off(sock_addr);
			writel(0x0e00, sock_addr + 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)
{
	struct tifm_adapter *fm = pci_get_drvdata(dev);
	int cnt;

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

	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
		if (fm->sockets[cnt])
			tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr);
	}

	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_dummy_has_ms_pif(struct tifm_adapter *fm,
				      struct tifm_dev *sock)
{
	return 0;
}

static int tifm_7xx1_has_ms_pif(struct tifm_adapter *fm, struct tifm_dev *sock)
{
	if (((fm->num_sockets == 4) && (sock->socket_id == 2))
	    || ((fm->num_sockets == 2) && (sock->socket_id == 0)))
		return 1;

	return 0;
}

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;
	fm->has_ms_pif = tifm_7xx1_has_ms_pif;
	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_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
	       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);
	int cnt;

	fm->eject = tifm_7xx1_dummy_eject;
	fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif;
	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	mmiowb();
	free_irq(dev->irq, fm);

	tifm_remove_adapter(fm);

	for (cnt = 0; cnt < fm->num_sockets; cnt++)
		tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt));

	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>
c4030698	13	#include <linux/dma-mapping.h>
4020f2d7 AD	14
4020f2d7 AD	15	#define DRIVER_NAME "tifm_7xx1"
4552f0cb AD	16	#define DRIVER_VERSION "0.8"
	17
	18	#define TIFM_IRQ_ENABLE 0x80000000
	19	#define TIFM_IRQ_SOCKMASK(x) (x)
	20	#define TIFM_IRQ_CARDMASK(x) ((x) << 8)
	21	#define TIFM_IRQ_FIFOMASK(x) ((x) << 16)
	22	#define TIFM_IRQ_SETALL 0xffffffff
4020f2d7	23
6113ed73 AD	24	static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm,
	25	struct tifm_dev *sock)
	26	{
	27	}
	28
4020f2d7 AD	29	static void tifm_7xx1_eject(struct tifm_adapter fm, struct tifm_dev sock)
4020f2d7 AD	30	{
4020f2d7 AD	31	unsigned long flags;
	32
	33	spin_lock_irqsave(&fm->lock, flags);
7146f0d3	34	fm->socket_change_set \|= 1 << sock->socket_id;
3540af8f	35	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	36	spin_unlock_irqrestore(&fm->lock, flags);
	37	}
	38
7d12e780	39	static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
4020f2d7 AD	40	{
4020f2d7 AD	41	struct tifm_adapter *fm = dev_id;
217334d1	42	struct tifm_dev *sock;
91f8d011	43	unsigned int irq_status, cnt;
4020f2d7 AD	44
	45	spin_lock(&fm->lock);
	46	irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
	47	if (irq_status == 0 \|\| irq_status == (~0)) {
	48	spin_unlock(&fm->lock);
	49	return IRQ_NONE;
	50	}
	51
	52	if (irq_status & TIFM_IRQ_ENABLE) {
	53	writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	54
8b40adab	55	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
217334d1	56	sock = fm->sockets[cnt];
4552f0cb AD	57	if (sock) {
	58	if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
	59	sock->data_event(sock);
	60	if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
	61	sock->card_event(sock);
	62	}
4020f2d7	63	}
6412d927	64
8b40adab AD	65	fm->socket_change_set \|= irq_status
8b40adab AD	66	& ((1 << fm->num_sockets) - 1);
4020f2d7 AD	67	}
	68	writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
	69
3540af8f AD	70	if (fm->finish_me)
	71	complete_all(fm->finish_me);
	72	else if (!fm->socket_change_set)
7146f0d3 AD	73	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3 AD	74	else
3540af8f	75	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	76
	77	spin_unlock(&fm->lock);
	78	return IRQ_HANDLED;
	79	}
	80
342c0ec4	81	static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr)
4020f2d7 AD	82	{
	83	unsigned int s_state;
	84	int cnt;
	85
	86	writel(0x0e00, sock_addr + SOCK_CONTROL);
	87
342c0ec4	88	for (cnt = 16; cnt <= 256; cnt <<= 1) {
8b40adab AD	89	if (!(TIFM_SOCK_STATE_POWERED
8b40adab AD	90	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7	91	break;
342c0ec4 AD	92
342c0ec4 AD	93	msleep(cnt);
4020f2d7 AD	94	}
	95
	96	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	97	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
e23f2b8a	98	return 0;
4020f2d7	99
342c0ec4 AD	100	writel(readl(sock_addr + SOCK_CONTROL) \| TIFM_CTRL_LED,
342c0ec4 AD	101	sock_addr + SOCK_CONTROL);
4020f2d7	102
342c0ec4 AD	103	/* xd needs some extra time before power on */
	104	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7)
	105	== TIFM_TYPE_XD)
	106	msleep(40);
	107
055b8224 AD	108	writel((s_state & TIFM_CTRL_POWER_MASK) \| 0x0c00,
055b8224 AD	109	sock_addr + SOCK_CONTROL);
342c0ec4 AD	110	/* wait for power to stabilize */
	111	msleep(20);
	112	for (cnt = 16; cnt <= 256; cnt <<= 1) {
8b40adab AD	113	if ((TIFM_SOCK_STATE_POWERED
8b40adab AD	114	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7	115	break;
342c0ec4 AD	116
342c0ec4 AD	117	msleep(cnt);
4020f2d7 AD	118	}
4020f2d7 AD	119
342c0ec4 AD	120	writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
342c0ec4 AD	121	sock_addr + SOCK_CONTROL);
4020f2d7 AD	122
	123	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
	124	}
	125
055b8224 AD	126	inline static void tifm_7xx1_sock_power_off(char __iomem *sock_addr)
	127	{
	128	writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL),
	129	sock_addr + SOCK_CONTROL);
	130	}
	131
e069d79d AV	132	inline static char __iomem *
e069d79d AV	133	tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
4020f2d7 AD	134	{
	135	return base_addr + ((sock_num + 1) << 10);
	136	}
	137
3540af8f	138	static void tifm_7xx1_switch_media(struct work_struct *work)
4020f2d7	139	{
3540af8f AD	140	struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
3540af8f AD	141	media_switcher);
91f8d011	142	struct tifm_dev *sock;
055b8224	143	char __iomem *sock_addr;
4020f2d7	144	unsigned long flags;
e23f2b8a	145	unsigned char media_id;
91f8d011	146	unsigned int socket_change_set, cnt;
4020f2d7	147
3540af8f AD	148	spin_lock_irqsave(&fm->lock, flags);
	149	socket_change_set = fm->socket_change_set;
	150	fm->socket_change_set = 0;
6412d927	151
7dd817d0	152	dev_dbg(fm->dev.parent, "checking media set %x\n",
3540af8f	153	socket_change_set);
6412d927	154
3540af8f	155	if (!socket_change_set) {
4020f2d7	156	spin_unlock_irqrestore(&fm->lock, flags);
3540af8f AD	157	return;
3540af8f AD	158	}
4020f2d7	159
2428a8fe AD	160	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	161	if (!(socket_change_set & (1 << cnt)))
	162	continue;
	163	sock = fm->sockets[cnt];
	164	if (sock) {
	165	printk(KERN_INFO
	166	"%s : demand removing card from socket %u:%u\n",
7dd817d0	167	fm->dev.bus_id, fm->id, cnt);
2428a8fe	168	fm->sockets[cnt] = NULL;
055b8224	169	sock_addr = sock->addr;
6412d927	170	spin_unlock_irqrestore(&fm->lock, flags);
2428a8fe AD	171	device_unregister(&sock->dev);
2428a8fe AD	172	spin_lock_irqsave(&fm->lock, flags);
055b8224 AD	173	tifm_7xx1_sock_power_off(sock_addr);
055b8224 AD	174	writel(0x0e00, sock_addr + SOCK_CONTROL);
2428a8fe AD	175	}
	176
	177	spin_unlock_irqrestore(&fm->lock, flags);
	178
	179	media_id = tifm_7xx1_toggle_sock_power(
	180	tifm_7xx1_sock_addr(fm->addr, cnt));
	181
	182	// tifm_alloc_device will check if media_id is valid
	183	sock = tifm_alloc_device(fm, cnt, media_id);
	184	if (sock) {
	185	sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt);
	186
	187	if (!device_register(&sock->dev)) {
6412d927	188	spin_lock_irqsave(&fm->lock, flags);
2428a8fe AD	189	if (!fm->sockets[cnt]) {
	190	fm->sockets[cnt] = sock;
	191	sock = NULL;
	192	}
	193	spin_unlock_irqrestore(&fm->lock, flags);
6412d927	194	}
2428a8fe AD	195	if (sock)
2428a8fe AD	196	tifm_free_device(&sock->dev);
6412d927	197	}
2428a8fe AD	198	spin_lock_irqsave(&fm->lock, flags);
2428a8fe AD	199	}
6412d927	200
3540af8f AD	201	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	202	\| TIFM_IRQ_CARDMASK(socket_change_set),
	203	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	204
	205	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	206	\| TIFM_IRQ_CARDMASK(socket_change_set),
	207	fm->addr + FM_SET_INTERRUPT_ENABLE);
	208
	209	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	210	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	211	}
4020f2d7 AD	212
7146f0d3 AD	213	#ifdef CONFIG_PM
7146f0d3 AD	214
4020f2d7 AD	215	static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
4020f2d7 AD	216	{
055b8224 AD	217	struct tifm_adapter *fm = pci_get_drvdata(dev);
	218	int cnt;
	219
7146f0d3	220	dev_dbg(&dev->dev, "suspending host\n");
4020f2d7	221
055b8224 AD	222	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	223	if (fm->sockets[cnt])
	224	tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr);
	225	}
	226
7146f0d3 AD	227	pci_save_state(dev);
	228	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	229	pci_disable_device(dev);
	230	pci_set_power_state(dev, pci_choose_state(dev, state));
4020f2d7 AD	231	return 0;
	232	}
	233
	234	static int tifm_7xx1_resume(struct pci_dev *dev)
	235	{
	236	struct tifm_adapter *fm = pci_get_drvdata(dev);
88de1b2f AD	237	int rc;
88de1b2f AD	238	unsigned int good_sockets = 0, bad_sockets = 0;
4020f2d7	239	unsigned long flags;
e23f2b8a	240	unsigned char new_ids[fm->num_sockets];
3540af8f	241	DECLARE_COMPLETION_ONSTACK(finish_resume);
4020f2d7	242
7146f0d3	243	pci_set_power_state(dev, PCI_D0);
4020f2d7	244	pci_restore_state(dev);
7146f0d3 AD	245	rc = pci_enable_device(dev);
	246	if (rc)
	247	return rc;
	248	pci_set_master(dev);
	249
	250	dev_dbg(&dev->dev, "resuming host\n");
4020f2d7	251
88de1b2f AD	252	for (rc = 0; rc < fm->num_sockets; rc++)
	253	new_ids[rc] = tifm_7xx1_toggle_sock_power(
	254	tifm_7xx1_sock_addr(fm->addr, rc));
4020f2d7	255	spin_lock_irqsave(&fm->lock, flags);
88de1b2f AD	256	for (rc = 0; rc < fm->num_sockets; rc++) {
	257	if (fm->sockets[rc]) {
	258	if (fm->sockets[rc]->type == new_ids[rc])
	259	good_sockets \|= 1 << rc;
	260	else
	261	bad_sockets \|= 1 << rc;
7146f0d3 AD	262	}
	263	}
	264
6412d927	265	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
7146f0d3	266	fm->addr + FM_SET_INTERRUPT_ENABLE);
88de1b2f AD	267	dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n",
	268	good_sockets, bad_sockets);
	269
	270	fm->socket_change_set = 0;
	271	if (good_sockets) {
3540af8f	272	fm->finish_me = &finish_resume;
7146f0d3	273	spin_unlock_irqrestore(&fm->lock, flags);
88de1b2f AD	274	rc = wait_for_completion_timeout(&finish_resume, HZ);
	275	dev_dbg(&dev->dev, "wait returned %d\n", rc);
	276	writel(TIFM_IRQ_FIFOMASK(good_sockets)
	277	\| TIFM_IRQ_CARDMASK(good_sockets),
	278	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	279	writel(TIFM_IRQ_FIFOMASK(good_sockets)
	280	\| TIFM_IRQ_CARDMASK(good_sockets),
	281	fm->addr + FM_SET_INTERRUPT_ENABLE);
	282	spin_lock_irqsave(&fm->lock, flags);
	283	fm->finish_me = NULL;
	284	fm->socket_change_set ^= good_sockets & fm->socket_change_set;
7146f0d3 AD	285	}
7146f0d3 AD	286
88de1b2f AD	287	fm->socket_change_set \|= bad_sockets;
	288	if (fm->socket_change_set)
	289	tifm_queue_work(&fm->media_switcher);
7146f0d3	290
88de1b2f	291	spin_unlock_irqrestore(&fm->lock, flags);
7146f0d3 AD	292	writel(TIFM_IRQ_ENABLE,
7146f0d3 AD	293	fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3	294
4020f2d7 AD	295	return 0;
	296	}
	297
7146f0d3 AD	298	#else
	299
	300	#define tifm_7xx1_suspend NULL
	301	#define tifm_7xx1_resume NULL
	302
	303	#endif /* CONFIG_PM */
	304
baf8532a AD	305	static int tifm_7xx1_dummy_has_ms_pif(struct tifm_adapter *fm,
	306	struct tifm_dev *sock)
	307	{
	308	return 0;
	309	}
	310
	311	static int tifm_7xx1_has_ms_pif(struct tifm_adapter fm, struct tifm_dev sock)
	312	{
	313	if (((fm->num_sockets == 4) && (sock->socket_id == 2))
	314	\|\| ((fm->num_sockets == 2) && (sock->socket_id == 0)))
	315	return 1;
	316
	317	return 0;
	318	}
	319
4020f2d7	320	static int tifm_7xx1_probe(struct pci_dev *dev,
8b40adab	321	const struct pci_device_id *dev_id)
4020f2d7 AD	322	{
	323	struct tifm_adapter *fm;
	324	int pci_dev_busy = 0;
	325	int rc;
	326
	327	rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	328	if (rc)
	329	return rc;
	330
	331	rc = pci_enable_device(dev);
	332	if (rc)
	333	return rc;
	334
	335	pci_set_master(dev);
	336
	337	rc = pci_request_regions(dev, DRIVER_NAME);
	338	if (rc) {
	339	pci_dev_busy = 1;
	340	goto err_out;
	341	}
	342
	343	pci_intx(dev, 1);
	344
6113ed73 AD	345	fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
6113ed73 AD	346	? 4 : 2, &dev->dev);
4020f2d7 AD	347	if (!fm) {
	348	rc = -ENOMEM;
	349	goto err_out_int;
	350	}
	351
3540af8f	352	INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
4020f2d7	353	fm->eject = tifm_7xx1_eject;
baf8532a	354	fm->has_ms_pif = tifm_7xx1_has_ms_pif;
4020f2d7 AD	355	pci_set_drvdata(dev, fm);
	356
	357	fm->addr = ioremap(pci_resource_start(dev, 0),
8b40adab	358	pci_resource_len(dev, 0));
4020f2d7 AD	359	if (!fm->addr)
	360	goto err_out_free;
	361
bc913b18	362	rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
4020f2d7 AD	363	if (rc)
	364	goto err_out_unmap;
	365
3540af8f	366	rc = tifm_add_adapter(fm);
4020f2d7 AD	367	if (rc)
	368	goto err_out_irq;
	369
e4c70e85 AD	370	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
e4c70e85 AD	371	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
6412d927	372	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
8b40adab	373	fm->addr + FM_SET_INTERRUPT_ENABLE);
4020f2d7 AD	374	return 0;
	375
	376	err_out_irq:
	377	free_irq(dev->irq, fm);
	378	err_out_unmap:
	379	iounmap(fm->addr);
	380	err_out_free:
	381	pci_set_drvdata(dev, NULL);
	382	tifm_free_adapter(fm);
	383	err_out_int:
	384	pci_intx(dev, 0);
	385	pci_release_regions(dev);
	386	err_out:
	387	if (!pci_dev_busy)
	388	pci_disable_device(dev);
	389	return rc;
	390	}
	391
	392	static void tifm_7xx1_remove(struct pci_dev *dev)
	393	{
	394	struct tifm_adapter *fm = pci_get_drvdata(dev);
055b8224	395	int cnt;
4020f2d7	396
6113ed73	397	fm->eject = tifm_7xx1_dummy_eject;
baf8532a	398	fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif;
7146f0d3 AD	399	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	400	mmiowb();
	401	free_irq(dev->irq, fm);
	402
4020f2d7 AD	403	tifm_remove_adapter(fm);
4020f2d7 AD	404
055b8224 AD	405	for (cnt = 0; cnt < fm->num_sockets; cnt++)
	406	tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt));
	407
e069d79d	408	pci_set_drvdata(dev, NULL);
4020f2d7 AD	409
	410	iounmap(fm->addr);
	411	pci_intx(dev, 0);
	412	pci_release_regions(dev);
	413
	414	pci_disable_device(dev);
	415	tifm_free_adapter(fm);
	416	}
	417
	418	static struct pci_device_id tifm_7xx1_pci_tbl [] = {
b5ad6761 AD	419	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID,
	420	PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */
	421	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID,
	422	PCI_ANY_ID, 0, 0, 0 },
	423	{ PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID,
	424	PCI_ANY_ID, 0, 0, 0 },
4020f2d7 AD	425	{ }
	426	};
	427
	428	static struct pci_driver tifm_7xx1_driver = {
	429	.name = DRIVER_NAME,
	430	.id_table = tifm_7xx1_pci_tbl,
	431	.probe = tifm_7xx1_probe,
	432	.remove = tifm_7xx1_remove,
	433	.suspend = tifm_7xx1_suspend,
	434	.resume = tifm_7xx1_resume,
	435	};
	436
	437	static int __init tifm_7xx1_init(void)
	438	{
	439	return pci_register_driver(&tifm_7xx1_driver);
	440	}
	441
	442	static void __exit tifm_7xx1_exit(void)
	443	{
	444	pci_unregister_driver(&tifm_7xx1_driver);
	445	}
	446
	447	MODULE_AUTHOR("Alex Dubov");
	448	MODULE_DESCRIPTION("TI FlashMedia host driver");
	449	MODULE_LICENSE("GPL");
	450	MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
	451	MODULE_VERSION(DRIVER_VERSION);
	452
	453	module_init(tifm_7xx1_init);
	454	module_exit(tifm_7xx1_exit);