[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/module.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",
			       dev_name(&fm->dev), 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 long timeout;
	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);
		timeout = wait_for_completion_timeout(&finish_resume, HZ);
		dev_dbg(&dev->dev, "wait returned %lu\n", timeout);
		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_BIT_MASK(32));
	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 = pci_ioremap_bar(dev, 0);
	if (!fm->addr) {
		rc = -ENODEV;
		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:
	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));

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

	pci_disable_device(dev);
	tifm_free_adapter(fm);
}

static const 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,
};

module_pci_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);
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>
eb12a679	14	#include <linux/module.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;
91f8d011	44	unsigned int irq_status, cnt;
4020f2d7 AD	45
	46	spin_lock(&fm->lock);
	47	irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
	48	if (irq_status == 0 \|\| irq_status == (~0)) {
	49	spin_unlock(&fm->lock);
	50	return IRQ_NONE;
	51	}
	52
	53	if (irq_status & TIFM_IRQ_ENABLE) {
	54	writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	55
8b40adab	56	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
217334d1	57	sock = fm->sockets[cnt];
4552f0cb AD	58	if (sock) {
	59	if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
	60	sock->data_event(sock);
	61	if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
	62	sock->card_event(sock);
	63	}
4020f2d7	64	}
6412d927	65
8b40adab AD	66	fm->socket_change_set \|= irq_status
8b40adab AD	67	& ((1 << fm->num_sockets) - 1);
4020f2d7 AD	68	}
	69	writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
	70
3540af8f AD	71	if (fm->finish_me)
	72	complete_all(fm->finish_me);
	73	else if (!fm->socket_change_set)
7146f0d3 AD	74	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3 AD	75	else
3540af8f	76	tifm_queue_work(&fm->media_switcher);
4020f2d7 AD	77
	78	spin_unlock(&fm->lock);
	79	return IRQ_HANDLED;
	80	}
	81
342c0ec4	82	static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr)
4020f2d7 AD	83	{
	84	unsigned int s_state;
	85	int cnt;
	86
	87	writel(0x0e00, sock_addr + SOCK_CONTROL);
	88
342c0ec4	89	for (cnt = 16; cnt <= 256; cnt <<= 1) {
8b40adab AD	90	if (!(TIFM_SOCK_STATE_POWERED
8b40adab AD	91	& readl(sock_addr + SOCK_PRESENT_STATE)))
4020f2d7	92	break;
342c0ec4 AD	93
342c0ec4 AD	94	msleep(cnt);
4020f2d7 AD	95	}
	96
	97	s_state = readl(sock_addr + SOCK_PRESENT_STATE);
	98	if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
e23f2b8a	99	return 0;
4020f2d7	100
342c0ec4 AD	101	writel(readl(sock_addr + SOCK_CONTROL) \| TIFM_CTRL_LED,
342c0ec4 AD	102	sock_addr + SOCK_CONTROL);
4020f2d7	103
342c0ec4 AD	104	/* xd needs some extra time before power on */
	105	if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7)
	106	== TIFM_TYPE_XD)
	107	msleep(40);
	108
055b8224 AD	109	writel((s_state & TIFM_CTRL_POWER_MASK) \| 0x0c00,
055b8224 AD	110	sock_addr + SOCK_CONTROL);
342c0ec4 AD	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
055b8224 AD	127	inline static void tifm_7xx1_sock_power_off(char __iomem *sock_addr)
	128	{
	129	writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL),
	130	sock_addr + SOCK_CONTROL);
	131	}
	132
e069d79d AV	133	inline static char __iomem *
e069d79d AV	134	tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
4020f2d7 AD	135	{
	136	return base_addr + ((sock_num + 1) << 10);
	137	}
	138
3540af8f	139	static void tifm_7xx1_switch_media(struct work_struct *work)
4020f2d7	140	{
3540af8f AD	141	struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
3540af8f AD	142	media_switcher);
91f8d011	143	struct tifm_dev *sock;
055b8224	144	char __iomem *sock_addr;
4020f2d7	145	unsigned long flags;
e23f2b8a	146	unsigned char media_id;
91f8d011	147	unsigned int socket_change_set, cnt;
4020f2d7	148
3540af8f AD	149	spin_lock_irqsave(&fm->lock, flags);
	150	socket_change_set = fm->socket_change_set;
	151	fm->socket_change_set = 0;
6412d927	152
7dd817d0	153	dev_dbg(fm->dev.parent, "checking media set %x\n",
3540af8f	154	socket_change_set);
6412d927	155
3540af8f	156	if (!socket_change_set) {
4020f2d7	157	spin_unlock_irqrestore(&fm->lock, flags);
3540af8f AD	158	return;
3540af8f AD	159	}
4020f2d7	160
2428a8fe AD	161	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	162	if (!(socket_change_set & (1 << cnt)))
	163	continue;
	164	sock = fm->sockets[cnt];
	165	if (sock) {
	166	printk(KERN_INFO
	167	"%s : demand removing card from socket %u:%u\n",
0bad16aa	168	dev_name(&fm->dev), fm->id, cnt);
2428a8fe	169	fm->sockets[cnt] = NULL;
055b8224	170	sock_addr = sock->addr;
6412d927	171	spin_unlock_irqrestore(&fm->lock, flags);
2428a8fe AD	172	device_unregister(&sock->dev);
2428a8fe AD	173	spin_lock_irqsave(&fm->lock, flags);
055b8224 AD	174	tifm_7xx1_sock_power_off(sock_addr);
055b8224 AD	175	writel(0x0e00, sock_addr + SOCK_CONTROL);
2428a8fe AD	176	}
	177
	178	spin_unlock_irqrestore(&fm->lock, flags);
	179
	180	media_id = tifm_7xx1_toggle_sock_power(
	181	tifm_7xx1_sock_addr(fm->addr, cnt));
	182
	183	// tifm_alloc_device will check if media_id is valid
	184	sock = tifm_alloc_device(fm, cnt, media_id);
	185	if (sock) {
	186	sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt);
	187
	188	if (!device_register(&sock->dev)) {
6412d927	189	spin_lock_irqsave(&fm->lock, flags);
2428a8fe AD	190	if (!fm->sockets[cnt]) {
	191	fm->sockets[cnt] = sock;
	192	sock = NULL;
	193	}
	194	spin_unlock_irqrestore(&fm->lock, flags);
6412d927	195	}
2428a8fe AD	196	if (sock)
2428a8fe AD	197	tifm_free_device(&sock->dev);
6412d927	198	}
2428a8fe AD	199	spin_lock_irqsave(&fm->lock, flags);
2428a8fe AD	200	}
6412d927	201
3540af8f AD	202	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	203	\| TIFM_IRQ_CARDMASK(socket_change_set),
	204	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	205
	206	writel(TIFM_IRQ_FIFOMASK(socket_change_set)
	207	\| TIFM_IRQ_CARDMASK(socket_change_set),
	208	fm->addr + FM_SET_INTERRUPT_ENABLE);
	209
	210	writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
	211	spin_unlock_irqrestore(&fm->lock, flags);
4020f2d7 AD	212	}
4020f2d7 AD	213
7146f0d3 AD	214	#ifdef CONFIG_PM
7146f0d3 AD	215
4020f2d7 AD	216	static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
4020f2d7 AD	217	{
055b8224 AD	218	struct tifm_adapter *fm = pci_get_drvdata(dev);
	219	int cnt;
	220
7146f0d3	221	dev_dbg(&dev->dev, "suspending host\n");
4020f2d7	222
055b8224 AD	223	for (cnt = 0; cnt < fm->num_sockets; cnt++) {
	224	if (fm->sockets[cnt])
	225	tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr);
	226	}
	227
7146f0d3 AD	228	pci_save_state(dev);
	229	pci_enable_wake(dev, pci_choose_state(dev, state), 0);
	230	pci_disable_device(dev);
	231	pci_set_power_state(dev, pci_choose_state(dev, state));
4020f2d7 AD	232	return 0;
	233	}
	234
	235	static int tifm_7xx1_resume(struct pci_dev *dev)
	236	{
	237	struct tifm_adapter *fm = pci_get_drvdata(dev);
88de1b2f	238	int rc;
a819a228	239	unsigned long timeout;
88de1b2f	240	unsigned int good_sockets = 0, bad_sockets = 0;
4020f2d7	241	unsigned long flags;
e23f2b8a	242	unsigned char new_ids[fm->num_sockets];
3540af8f	243	DECLARE_COMPLETION_ONSTACK(finish_resume);
4020f2d7	244
7146f0d3	245	pci_set_power_state(dev, PCI_D0);
4020f2d7	246	pci_restore_state(dev);
7146f0d3 AD	247	rc = pci_enable_device(dev);
	248	if (rc)
	249	return rc;
	250	pci_set_master(dev);
	251
	252	dev_dbg(&dev->dev, "resuming host\n");
4020f2d7	253
88de1b2f AD	254	for (rc = 0; rc < fm->num_sockets; rc++)
	255	new_ids[rc] = tifm_7xx1_toggle_sock_power(
	256	tifm_7xx1_sock_addr(fm->addr, rc));
4020f2d7	257	spin_lock_irqsave(&fm->lock, flags);
88de1b2f AD	258	for (rc = 0; rc < fm->num_sockets; rc++) {
	259	if (fm->sockets[rc]) {
	260	if (fm->sockets[rc]->type == new_ids[rc])
	261	good_sockets \|= 1 << rc;
	262	else
	263	bad_sockets \|= 1 << rc;
7146f0d3 AD	264	}
	265	}
	266
6412d927	267	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
7146f0d3	268	fm->addr + FM_SET_INTERRUPT_ENABLE);
88de1b2f AD	269	dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n",
	270	good_sockets, bad_sockets);
	271
	272	fm->socket_change_set = 0;
	273	if (good_sockets) {
3540af8f	274	fm->finish_me = &finish_resume;
7146f0d3	275	spin_unlock_irqrestore(&fm->lock, flags);
a819a228 NMG	276	timeout = wait_for_completion_timeout(&finish_resume, HZ);
a819a228 NMG	277	dev_dbg(&dev->dev, "wait returned %lu\n", timeout);
88de1b2f AD	278	writel(TIFM_IRQ_FIFOMASK(good_sockets)
	279	\| TIFM_IRQ_CARDMASK(good_sockets),
	280	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	281	writel(TIFM_IRQ_FIFOMASK(good_sockets)
	282	\| TIFM_IRQ_CARDMASK(good_sockets),
	283	fm->addr + FM_SET_INTERRUPT_ENABLE);
	284	spin_lock_irqsave(&fm->lock, flags);
	285	fm->finish_me = NULL;
	286	fm->socket_change_set ^= good_sockets & fm->socket_change_set;
7146f0d3 AD	287	}
7146f0d3 AD	288
88de1b2f AD	289	fm->socket_change_set \|= bad_sockets;
	290	if (fm->socket_change_set)
	291	tifm_queue_work(&fm->media_switcher);
7146f0d3	292
88de1b2f	293	spin_unlock_irqrestore(&fm->lock, flags);
7146f0d3 AD	294	writel(TIFM_IRQ_ENABLE,
7146f0d3 AD	295	fm->addr + FM_SET_INTERRUPT_ENABLE);
7146f0d3	296
4020f2d7 AD	297	return 0;
	298	}
	299
7146f0d3 AD	300	#else
	301
	302	#define tifm_7xx1_suspend NULL
	303	#define tifm_7xx1_resume NULL
	304
	305	#endif /* CONFIG_PM */
	306
baf8532a AD	307	static int tifm_7xx1_dummy_has_ms_pif(struct tifm_adapter *fm,
	308	struct tifm_dev *sock)
	309	{
	310	return 0;
	311	}
	312
	313	static int tifm_7xx1_has_ms_pif(struct tifm_adapter fm, struct tifm_dev sock)
	314	{
	315	if (((fm->num_sockets == 4) && (sock->socket_id == 2))
	316	\|\| ((fm->num_sockets == 2) && (sock->socket_id == 0)))
	317	return 1;
	318
	319	return 0;
	320	}
	321
4020f2d7	322	static int tifm_7xx1_probe(struct pci_dev *dev,
8b40adab	323	const struct pci_device_id *dev_id)
4020f2d7 AD	324	{
	325	struct tifm_adapter *fm;
	326	int pci_dev_busy = 0;
	327	int rc;
	328
284901a9	329	rc = pci_set_dma_mask(dev, DMA_BIT_MASK(32));
4020f2d7 AD	330	if (rc)
	331	return rc;
	332
	333	rc = pci_enable_device(dev);
	334	if (rc)
	335	return rc;
	336
	337	pci_set_master(dev);
	338
	339	rc = pci_request_regions(dev, DRIVER_NAME);
	340	if (rc) {
	341	pci_dev_busy = 1;
	342	goto err_out;
	343	}
	344
	345	pci_intx(dev, 1);
	346
6113ed73 AD	347	fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
6113ed73 AD	348	? 4 : 2, &dev->dev);
4020f2d7 AD	349	if (!fm) {
	350	rc = -ENOMEM;
	351	goto err_out_int;
	352	}
	353
3540af8f	354	INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
4020f2d7	355	fm->eject = tifm_7xx1_eject;
baf8532a	356	fm->has_ms_pif = tifm_7xx1_has_ms_pif;
4020f2d7 AD	357	pci_set_drvdata(dev, fm);
4020f2d7 AD	358
bdbeed75	359	fm->addr = pci_ioremap_bar(dev, 0);
86d6275a WY	360	if (!fm->addr) {
86d6275a WY	361	rc = -ENODEV;
4020f2d7	362	goto err_out_free;
86d6275a	363	}
4020f2d7	364
bc913b18	365	rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
4020f2d7 AD	366	if (rc)
	367	goto err_out_unmap;
	368
3540af8f	369	rc = tifm_add_adapter(fm);
4020f2d7 AD	370	if (rc)
	371	goto err_out_irq;
	372
e4c70e85 AD	373	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
e4c70e85 AD	374	fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
6412d927	375	writel(TIFM_IRQ_ENABLE \| TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
8b40adab	376	fm->addr + FM_SET_INTERRUPT_ENABLE);
4020f2d7 AD	377	return 0;
	378
	379	err_out_irq:
	380	free_irq(dev->irq, fm);
	381	err_out_unmap:
	382	iounmap(fm->addr);
	383	err_out_free:
4020f2d7 AD	384	tifm_free_adapter(fm);
	385	err_out_int:
	386	pci_intx(dev, 0);
	387	pci_release_regions(dev);
	388	err_out:
	389	if (!pci_dev_busy)
	390	pci_disable_device(dev);
	391	return rc;
	392	}
	393
	394	static void tifm_7xx1_remove(struct pci_dev *dev)
	395	{
	396	struct tifm_adapter *fm = pci_get_drvdata(dev);
055b8224	397	int cnt;
4020f2d7	398
6113ed73	399	fm->eject = tifm_7xx1_dummy_eject;
baf8532a	400	fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif;
7146f0d3 AD	401	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
	402	mmiowb();
	403	free_irq(dev->irq, fm);
	404
4020f2d7 AD	405	tifm_remove_adapter(fm);
4020f2d7 AD	406
055b8224 AD	407	for (cnt = 0; cnt < fm->num_sockets; cnt++)
	408	tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt));
	409
4020f2d7 AD	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
404147ba	418	static const 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
7e0b2cde	437	module_pci_driver(tifm_7xx1_driver);
4020f2d7 AD	438	MODULE_AUTHOR("Alex Dubov");
	439	MODULE_DESCRIPTION("TI FlashMedia host driver");
	440	MODULE_LICENSE("GPL");
	441	MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
	442	MODULE_VERSION(DRIVER_VERSION);