[net-next-2.6.git] / drivers / mfd / t7l66xb.c

/*
 *
 * Toshiba T7L66XB core mfd support
 *
 * Copyright (c) 2005, 2007, 2008 Ian Molton
 * Copyright (c) 2008 Dmitry Baryshkov
 *
 * 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.
 *
 * T7L66 features:
 *
 * Supported in this driver:
 * SD/MMC
 * SM/NAND flash controller
 *
 * As yet not supported
 * GPIO interface (on NAND pins)
 * Serial interface
 * TFT 'interface converter'
 * PCMCIA interface logic
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
#include <linux/mfd/t7l66xb.h>

enum {
	T7L66XB_CELL_NAND,
	T7L66XB_CELL_MMC,
};

#define SCR_REVID	0x08		/* b Revision ID	*/
#define SCR_IMR		0x42		/* b Interrupt Mask	*/
#define SCR_DEV_CTL	0xe0		/* b Device control	*/
#define SCR_ISR		0xe1		/* b Interrupt Status	*/
#define SCR_GPO_OC	0xf0		/* b GPO output control	*/
#define SCR_GPO_OS	0xf1		/* b GPO output enable	*/
#define SCR_GPI_S	0xf2		/* w GPI status		*/
#define SCR_APDC	0xf8		/* b Active pullup down ctrl */

#define SCR_DEV_CTL_USB		BIT(0)	/* USB enable		*/
#define SCR_DEV_CTL_MMC		BIT(1)	/* MMC enable		*/

/*--------------------------------------------------------------------------*/

struct t7l66xb {
	void __iomem		*scr;
	/* Lock to protect registers requiring read/modify/write ops. */
	spinlock_t		lock;

	struct resource		rscr;
	struct clk		*clk48m;
	struct clk		*clk32k;
	int			irq;
	int			irq_base;
};

/*--------------------------------------------------------------------------*/

static int t7l66xb_mmc_enable(struct platform_device *mmc)
{
	struct platform_device *dev = to_platform_device(mmc->dev.parent);
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	unsigned long flags;
	u8 dev_ctl;

	clk_enable(t7l66xb->clk32k);

	spin_lock_irqsave(&t7l66xb->lock, flags);

	dev_ctl = tmio_ioread8(t7l66xb->scr + SCR_DEV_CTL);
	dev_ctl |= SCR_DEV_CTL_MMC;
	tmio_iowrite8(dev_ctl, t7l66xb->scr + SCR_DEV_CTL);

	spin_unlock_irqrestore(&t7l66xb->lock, flags);

	return 0;
}

static int t7l66xb_mmc_disable(struct platform_device *mmc)
{
	struct platform_device *dev = to_platform_device(mmc->dev.parent);
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	unsigned long flags;
	u8 dev_ctl;

	spin_lock_irqsave(&t7l66xb->lock, flags);

	dev_ctl = tmio_ioread8(t7l66xb->scr + SCR_DEV_CTL);
	dev_ctl &= ~SCR_DEV_CTL_MMC;
	tmio_iowrite8(dev_ctl, t7l66xb->scr + SCR_DEV_CTL);

	spin_unlock_irqrestore(&t7l66xb->lock, flags);

	clk_disable(t7l66xb->clk32k);

	return 0;
}

/*--------------------------------------------------------------------------*/

static const struct resource t7l66xb_mmc_resources[] = {
	{
		.start = 0x800,
		.end	= 0x9ff,
		.flags = IORESOURCE_MEM,
	},
	{
		.start = 0x200,
		.end	= 0x2ff,
		.flags = IORESOURCE_MEM,
	},
	{
		.start = IRQ_T7L66XB_MMC,
		.end	= IRQ_T7L66XB_MMC,
		.flags = IORESOURCE_IRQ,
	},
};

static const struct resource t7l66xb_nand_resources[] = {
	{
		.start	= 0xc00,
		.end	= 0xc07,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x0100,
		.end	= 0x01ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IRQ_T7L66XB_NAND,
		.end	= IRQ_T7L66XB_NAND,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct mfd_cell t7l66xb_cells[] = {
	[T7L66XB_CELL_MMC] = {
		.name = "tmio-mmc",
		.enable = t7l66xb_mmc_enable,
		.disable = t7l66xb_mmc_disable,
		.num_resources = ARRAY_SIZE(t7l66xb_mmc_resources),
		.resources = t7l66xb_mmc_resources,
	},
	[T7L66XB_CELL_NAND] = {
		.name = "tmio-nand",
		.num_resources = ARRAY_SIZE(t7l66xb_nand_resources),
		.resources = t7l66xb_nand_resources,
	},
};

/*--------------------------------------------------------------------------*/

/* Handle the T7L66XB interrupt mux */
static void t7l66xb_irq(unsigned int irq, struct irq_desc *desc)
{
	struct t7l66xb *t7l66xb = get_irq_data(irq);
	unsigned int isr;
	unsigned int i, irq_base;

	irq_base = t7l66xb->irq_base;

	while ((isr = tmio_ioread8(t7l66xb->scr + SCR_ISR) &
				~tmio_ioread8(t7l66xb->scr + SCR_IMR)))
		for (i = 0; i < T7L66XB_NR_IRQS; i++)
			if (isr & (1 << i))
				generic_handle_irq(irq_base + i);
}

static void t7l66xb_irq_mask(unsigned int irq)
{
	struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
	unsigned long			flags;
	u8 imr;

	spin_lock_irqsave(&t7l66xb->lock, flags);
	imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
	imr |= 1 << (irq - t7l66xb->irq_base);
	tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
	spin_unlock_irqrestore(&t7l66xb->lock, flags);
}

static void t7l66xb_irq_unmask(unsigned int irq)
{
	struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
	unsigned long flags;
	u8 imr;

	spin_lock_irqsave(&t7l66xb->lock, flags);
	imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
	imr &= ~(1 << (irq - t7l66xb->irq_base));
	tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
	spin_unlock_irqrestore(&t7l66xb->lock, flags);
}

static struct irq_chip t7l66xb_chip = {
	.name	= "t7l66xb",
	.ack	= t7l66xb_irq_mask,
	.mask	= t7l66xb_irq_mask,
	.unmask	= t7l66xb_irq_unmask,
};

/*--------------------------------------------------------------------------*/

/* Install the IRQ handler */
static void t7l66xb_attach_irq(struct platform_device *dev)
{
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	unsigned int irq, irq_base;

	irq_base = t7l66xb->irq_base;

	for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
		set_irq_chip(irq, &t7l66xb_chip);
		set_irq_chip_data(irq, t7l66xb);
		set_irq_handler(irq, handle_level_irq);
#ifdef CONFIG_ARM
		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
#endif
	}

	set_irq_type(t7l66xb->irq, IRQ_TYPE_EDGE_FALLING);
	set_irq_data(t7l66xb->irq, t7l66xb);
	set_irq_chained_handler(t7l66xb->irq, t7l66xb_irq);
}

static void t7l66xb_detach_irq(struct platform_device *dev)
{
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	unsigned int irq, irq_base;

	irq_base = t7l66xb->irq_base;

	set_irq_chained_handler(t7l66xb->irq, NULL);
	set_irq_data(t7l66xb->irq, NULL);

	for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
#ifdef CONFIG_ARM
		set_irq_flags(irq, 0);
#endif
		set_irq_chip(irq, NULL);
		set_irq_chip_data(irq, NULL);
	}
}

/*--------------------------------------------------------------------------*/

#ifdef CONFIG_PM
static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
{
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;

	if (pdata && pdata->suspend)
		pdata->suspend(dev);
	clk_disable(t7l66xb->clk48m);

	return 0;
}

static int t7l66xb_resume(struct platform_device *dev)
{
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;

	clk_enable(t7l66xb->clk48m);
	if (pdata && pdata->resume)
		pdata->resume(dev);

	return 0;
}
#else
#define t7l66xb_suspend NULL
#define t7l66xb_resume	NULL
#endif

/*--------------------------------------------------------------------------*/

static int t7l66xb_probe(struct platform_device *dev)
{
	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
	struct t7l66xb *t7l66xb;
	struct resource *iomem, *rscr;
	int ret;

	iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	if (!iomem)
		return -EINVAL;

	t7l66xb = kzalloc(sizeof *t7l66xb, GFP_KERNEL);
	if (!t7l66xb)
		return -ENOMEM;

	spin_lock_init(&t7l66xb->lock);

	platform_set_drvdata(dev, t7l66xb);

	ret = platform_get_irq(dev, 0);
	if (ret >= 0)
		t7l66xb->irq = ret;
	else
		goto err_noirq;

	t7l66xb->irq_base = pdata->irq_base;

	t7l66xb->clk32k = clk_get(&dev->dev, "CLK_CK32K");
	if (IS_ERR(t7l66xb->clk32k)) {
		ret = PTR_ERR(t7l66xb->clk32k);
		goto err_clk32k_get;
	}

	t7l66xb->clk48m = clk_get(&dev->dev, "CLK_CK48M");
	if (IS_ERR(t7l66xb->clk48m)) {
		ret = PTR_ERR(t7l66xb->clk48m);
		clk_put(t7l66xb->clk32k);
		goto err_clk48m_get;
	}

	rscr = &t7l66xb->rscr;
	rscr->name = "t7l66xb-core";
	rscr->start = iomem->start;
	rscr->end = iomem->start + 0xff;
	rscr->flags = IORESOURCE_MEM;

	ret = request_resource(iomem, rscr);
	if (ret)
		goto err_request_scr;

	t7l66xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
	if (!t7l66xb->scr) {
		ret = -ENOMEM;
		goto err_ioremap;
	}

	clk_enable(t7l66xb->clk48m);

	if (pdata && pdata->enable)
		pdata->enable(dev);

	/* Mask all interrupts */
	tmio_iowrite8(0xbf, t7l66xb->scr + SCR_IMR);

	printk(KERN_INFO "%s rev %d @ 0x%08lx, irq %d\n",
		dev->name, tmio_ioread8(t7l66xb->scr + SCR_REVID),
		(unsigned long)iomem->start, t7l66xb->irq);

	t7l66xb_attach_irq(dev);

	t7l66xb_cells[T7L66XB_CELL_NAND].driver_data = pdata->nand_data;
	t7l66xb_cells[T7L66XB_CELL_NAND].platform_data =
		&t7l66xb_cells[T7L66XB_CELL_NAND];
	t7l66xb_cells[T7L66XB_CELL_NAND].data_size =
		sizeof(t7l66xb_cells[T7L66XB_CELL_NAND]);

	t7l66xb_cells[T7L66XB_CELL_MMC].platform_data =
		&t7l66xb_cells[T7L66XB_CELL_MMC];
	t7l66xb_cells[T7L66XB_CELL_MMC].data_size =
		sizeof(t7l66xb_cells[T7L66XB_CELL_MMC]);

	ret = mfd_add_devices(&dev->dev, dev->id,
			      t7l66xb_cells, ARRAY_SIZE(t7l66xb_cells),
			      iomem, t7l66xb->irq_base);

	if (!ret)
		return 0;

	t7l66xb_detach_irq(dev);
	iounmap(t7l66xb->scr);
err_ioremap:
	release_resource(&t7l66xb->rscr);
err_request_scr:
	kfree(t7l66xb);
	clk_put(t7l66xb->clk48m);
err_clk48m_get:
	clk_put(t7l66xb->clk32k);
err_clk32k_get:
err_noirq:
	return ret;
}

static int t7l66xb_remove(struct platform_device *dev)
{
	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	int ret;

	ret = pdata->disable(dev);
	clk_disable(t7l66xb->clk48m);
	clk_put(t7l66xb->clk48m);
	t7l66xb_detach_irq(dev);
	iounmap(t7l66xb->scr);
	release_resource(&t7l66xb->rscr);
	mfd_remove_devices(&dev->dev);
	platform_set_drvdata(dev, NULL);
	kfree(t7l66xb);

	return ret;

}

static struct platform_driver t7l66xb_platform_driver = {
	.driver = {
		.name	= "t7l66xb",
		.owner	= THIS_MODULE,
	},
	.suspend	= t7l66xb_suspend,
	.resume		= t7l66xb_resume,
	.probe		= t7l66xb_probe,
	.remove		= t7l66xb_remove,
};

/*--------------------------------------------------------------------------*/

static int __init t7l66xb_init(void)
{
	int retval = 0;

	retval = platform_driver_register(&t7l66xb_platform_driver);
	return retval;
}

static void __exit t7l66xb_exit(void)
{
	platform_driver_unregister(&t7l66xb_platform_driver);
}

module_init(t7l66xb_init);
module_exit(t7l66xb_exit);

MODULE_DESCRIPTION("Toshiba T7L66XB core driver");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Ian Molton");
MODULE_ALIAS("platform:t7l66xb");
Commit	Line	Data
1f192015 IM	1	/*
	2	*
	3	* Toshiba T7L66XB core mfd support
	4	*
	5	* Copyright (c) 2005, 2007, 2008 Ian Molton
	6	* Copyright (c) 2008 Dmitry Baryshkov
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	* T7L66 features:
	13	*
	14	* Supported in this driver:
	15	* SD/MMC
	16	* SM/NAND flash controller
	17	*
	18	* As yet not supported
	19	* GPIO interface (on NAND pins)
	20	* Serial interface
	21	* TFT 'interface converter'
	22	* PCMCIA interface logic
	23	*/
	24
	25	#include <linux/kernel.h>
	26	#include <linux/module.h>
7acb706c	27	#include <linux/err.h>
1f192015 IM	28	#include <linux/io.h>
1f192015 IM	29	#include <linux/irq.h>
7acb706c	30	#include <linux/clk.h>
1f192015 IM	31	#include <linux/platform_device.h>
	32	#include <linux/mfd/core.h>
	33	#include <linux/mfd/tmio.h>
	34	#include <linux/mfd/t7l66xb.h>
	35
	36	enum {
	37	T7L66XB_CELL_NAND,
	38	T7L66XB_CELL_MMC,
	39	};
	40
	41	#define SCR_REVID 0x08 /* b Revision ID */
	42	#define SCR_IMR 0x42 /* b Interrupt Mask */
	43	#define SCR_DEV_CTL 0xe0 /* b Device control */
	44	#define SCR_ISR 0xe1 /* b Interrupt Status */
	45	#define SCR_GPO_OC 0xf0 /* b GPO output control */
	46	#define SCR_GPO_OS 0xf1 /* b GPO output enable */
	47	#define SCR_GPI_S 0xf2 /* w GPI status */
	48	#define SCR_APDC 0xf8 /* b Active pullup down ctrl */
	49
	50	#define SCR_DEV_CTL_USB BIT(0) /* USB enable */
	51	#define SCR_DEV_CTL_MMC BIT(1) /* MMC enable */
	52
	53	/--------------------------------------------------------------------------/
	54
	55	struct t7l66xb {
	56	void __iomem *scr;
	57	/* Lock to protect registers requiring read/modify/write ops. */
	58	spinlock_t lock;
	59
	60	struct resource rscr;
7acb706c IM	61	struct clk *clk48m;
7acb706c IM	62	struct clk *clk32k;
1f192015 IM	63	int irq;
	64	int irq_base;
	65	};
	66
	67	/--------------------------------------------------------------------------/
	68
	69	static int t7l66xb_mmc_enable(struct platform_device *mmc)
	70	{
	71	struct platform_device *dev = to_platform_device(mmc->dev.parent);
1f192015 IM	72	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	73	unsigned long flags;
	74	u8 dev_ctl;
	75
7acb706c	76	clk_enable(t7l66xb->clk32k);
1f192015 IM	77
	78	spin_lock_irqsave(&t7l66xb->lock, flags);
	79
	80	dev_ctl = tmio_ioread8(t7l66xb->scr + SCR_DEV_CTL);
	81	dev_ctl \|= SCR_DEV_CTL_MMC;
	82	tmio_iowrite8(dev_ctl, t7l66xb->scr + SCR_DEV_CTL);
	83
	84	spin_unlock_irqrestore(&t7l66xb->lock, flags);
	85
	86	return 0;
	87	}
	88
	89	static int t7l66xb_mmc_disable(struct platform_device *mmc)
	90	{
	91	struct platform_device *dev = to_platform_device(mmc->dev.parent);
1f192015 IM	92	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	93	unsigned long flags;
	94	u8 dev_ctl;
	95
	96	spin_lock_irqsave(&t7l66xb->lock, flags);
	97
	98	dev_ctl = tmio_ioread8(t7l66xb->scr + SCR_DEV_CTL);
	99	dev_ctl &= ~SCR_DEV_CTL_MMC;
	100	tmio_iowrite8(dev_ctl, t7l66xb->scr + SCR_DEV_CTL);
	101
	102	spin_unlock_irqrestore(&t7l66xb->lock, flags);
	103
7acb706c	104	clk_disable(t7l66xb->clk32k);
1f192015 IM	105
	106	return 0;
	107	}
	108
	109	/--------------------------------------------------------------------------/
	110
3446d4bb	111	static const struct resource t7l66xb_mmc_resources[] = {
1f192015 IM	112	{
	113	.start = 0x800,
	114	.end = 0x9ff,
	115	.flags = IORESOURCE_MEM,
	116	},
	117	{
	118	.start = 0x200,
	119	.end = 0x2ff,
	120	.flags = IORESOURCE_MEM,
	121	},
	122	{
	123	.start = IRQ_T7L66XB_MMC,
	124	.end = IRQ_T7L66XB_MMC,
	125	.flags = IORESOURCE_IRQ,
	126	},
	127	};
	128
3446d4bb	129	static const struct resource t7l66xb_nand_resources[] = {
1f192015 IM	130	{
	131	.start = 0xc00,
	132	.end = 0xc07,
	133	.flags = IORESOURCE_MEM,
	134	},
	135	{
	136	.start = 0x0100,
	137	.end = 0x01ff,
	138	.flags = IORESOURCE_MEM,
	139	},
	140	{
	141	.start = IRQ_T7L66XB_NAND,
	142	.end = IRQ_T7L66XB_NAND,
	143	.flags = IORESOURCE_IRQ,
	144	},
	145	};
	146
	147	static struct mfd_cell t7l66xb_cells[] = {
	148	[T7L66XB_CELL_MMC] = {
	149	.name = "tmio-mmc",
	150	.enable = t7l66xb_mmc_enable,
	151	.disable = t7l66xb_mmc_disable,
	152	.num_resources = ARRAY_SIZE(t7l66xb_mmc_resources),
	153	.resources = t7l66xb_mmc_resources,
	154	},
	155	[T7L66XB_CELL_NAND] = {
	156	.name = "tmio-nand",
	157	.num_resources = ARRAY_SIZE(t7l66xb_nand_resources),
	158	.resources = t7l66xb_nand_resources,
	159	},
	160	};
	161
	162	/--------------------------------------------------------------------------/
	163
	164	/* Handle the T7L66XB interrupt mux */
	165	static void t7l66xb_irq(unsigned int irq, struct irq_desc *desc)
	166	{
	167	struct t7l66xb *t7l66xb = get_irq_data(irq);
	168	unsigned int isr;
	169	unsigned int i, irq_base;
	170
	171	irq_base = t7l66xb->irq_base;
	172
	173	while ((isr = tmio_ioread8(t7l66xb->scr + SCR_ISR) &
	174	~tmio_ioread8(t7l66xb->scr + SCR_IMR)))
	175	for (i = 0; i < T7L66XB_NR_IRQS; i++)
	176	if (isr & (1 << i))
	177	generic_handle_irq(irq_base + i);
	178	}
	179
	180	static void t7l66xb_irq_mask(unsigned int irq)
	181	{
	182	struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
	183	unsigned long flags;
	184	u8 imr;
	185
	186	spin_lock_irqsave(&t7l66xb->lock, flags);
	187	imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
	188	imr \|= 1 << (irq - t7l66xb->irq_base);
	189	tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
	190	spin_unlock_irqrestore(&t7l66xb->lock, flags);
	191	}
	192
	193	static void t7l66xb_irq_unmask(unsigned int irq)
194	{
195	struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
196	unsigned long flags;
197	u8 imr;
198
199	spin_lock_irqsave(&t7l66xb->lock, flags);
200	imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
201	imr &= ~(1 << (irq - t7l66xb->irq_base));
202	tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
203	spin_unlock_irqrestore(&t7l66xb->lock, flags);
204	}
205
206	static struct irq_chip t7l66xb_chip = {
207	.name = "t7l66xb",
208	.ack = t7l66xb_irq_mask,
209	.mask = t7l66xb_irq_mask,
210	.unmask = t7l66xb_irq_unmask,
211	};
212
213	/--------------------------------------------------------------------------/
214
215	/* Install the IRQ handler */
216	static void t7l66xb_attach_irq(struct platform_device *dev)
217	{
218	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
219	unsigned int irq, irq_base;
220
221	irq_base = t7l66xb->irq_base;
222
223	for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
224	set_irq_chip(irq, &t7l66xb_chip);
225	set_irq_chip_data(irq, t7l66xb);
226	set_irq_handler(irq, handle_level_irq);
227	#ifdef CONFIG_ARM
228	set_irq_flags(irq, IRQF_VALID \| IRQF_PROBE);
229	#endif
230	}
231
232	set_irq_type(t7l66xb->irq, IRQ_TYPE_EDGE_FALLING);
233	set_irq_data(t7l66xb->irq, t7l66xb);
234	set_irq_chained_handler(t7l66xb->irq, t7l66xb_irq);
235	}
236
237	static void t7l66xb_detach_irq(struct platform_device *dev)
238	{
239	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
240	unsigned int irq, irq_base;
241
242	irq_base = t7l66xb->irq_base;
243
244	set_irq_chained_handler(t7l66xb->irq, NULL);
245	set_irq_data(t7l66xb->irq, NULL);
246
247	for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
248	#ifdef CONFIG_ARM
249	set_irq_flags(irq, 0);
250	#endif
251	set_irq_chip(irq, NULL);
252	set_irq_chip_data(irq, NULL);
253	}
254	}
255
256	/--------------------------------------------------------------------------/
257
258	#ifdef CONFIG_PM
259	static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
260	{
7acb706c	261	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
1f192015 IM	262	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
	263
	264	if (pdata && pdata->suspend)
	265	pdata->suspend(dev);
7acb706c	266	clk_disable(t7l66xb->clk48m);
1f192015 IM	267
	268	return 0;
	269	}
	270
	271	static int t7l66xb_resume(struct platform_device *dev)
	272	{
7acb706c	273	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
1f192015 IM	274	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
1f192015 IM	275
7acb706c	276	clk_enable(t7l66xb->clk48m);
1f192015 IM	277	if (pdata && pdata->resume)
	278	pdata->resume(dev);
	279
	280	return 0;
	281	}
	282	#else
	283	#define t7l66xb_suspend NULL
	284	#define t7l66xb_resume NULL
	285	#endif
	286
	287	/--------------------------------------------------------------------------/
	288
	289	static int t7l66xb_probe(struct platform_device *dev)
	290	{
	291	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
	292	struct t7l66xb *t7l66xb;
	293	struct resource iomem, rscr;
	294	int ret;
	295
	296	iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	297	if (!iomem)
	298	return -EINVAL;
	299
	300	t7l66xb = kzalloc(sizeof *t7l66xb, GFP_KERNEL);
	301	if (!t7l66xb)
	302	return -ENOMEM;
	303
	304	spin_lock_init(&t7l66xb->lock);
	305
	306	platform_set_drvdata(dev, t7l66xb);
	307
	308	ret = platform_get_irq(dev, 0);
	309	if (ret >= 0)
	310	t7l66xb->irq = ret;
	311	else
	312	goto err_noirq;
	313
	314	t7l66xb->irq_base = pdata->irq_base;
	315
7acb706c IM	316	t7l66xb->clk32k = clk_get(&dev->dev, "CLK_CK32K");
	317	if (IS_ERR(t7l66xb->clk32k)) {
	318	ret = PTR_ERR(t7l66xb->clk32k);
	319	goto err_clk32k_get;
	320	}
	321
	322	t7l66xb->clk48m = clk_get(&dev->dev, "CLK_CK48M");
	323	if (IS_ERR(t7l66xb->clk48m)) {
	324	ret = PTR_ERR(t7l66xb->clk48m);
	325	clk_put(t7l66xb->clk32k);
	326	goto err_clk48m_get;
	327	}
	328
1f192015 IM	329	rscr = &t7l66xb->rscr;
	330	rscr->name = "t7l66xb-core";
	331	rscr->start = iomem->start;
	332	rscr->end = iomem->start + 0xff;
	333	rscr->flags = IORESOURCE_MEM;
	334
	335	ret = request_resource(iomem, rscr);
	336	if (ret)
	337	goto err_request_scr;
	338
	339	t7l66xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
	340	if (!t7l66xb->scr) {
	341	ret = -ENOMEM;
	342	goto err_ioremap;
	343	}
	344
7acb706c IM	345	clk_enable(t7l66xb->clk48m);
7acb706c IM	346
1f192015 IM	347	if (pdata && pdata->enable)
	348	pdata->enable(dev);
	349
	350	/* Mask all interrupts */
	351	tmio_iowrite8(0xbf, t7l66xb->scr + SCR_IMR);
	352
	353	printk(KERN_INFO "%s rev %d @ 0x%08lx, irq %d\n",
	354	dev->name, tmio_ioread8(t7l66xb->scr + SCR_REVID),
	355	(unsigned long)iomem->start, t7l66xb->irq);
	356
	357	t7l66xb_attach_irq(dev);
	358
	359	t7l66xb_cells[T7L66XB_CELL_NAND].driver_data = pdata->nand_data;
56bf2bda SO	360	t7l66xb_cells[T7L66XB_CELL_NAND].platform_data =
	361	&t7l66xb_cells[T7L66XB_CELL_NAND];
	362	t7l66xb_cells[T7L66XB_CELL_NAND].data_size =
	363	sizeof(t7l66xb_cells[T7L66XB_CELL_NAND]);
1f192015	364
8a4fbe01 IM	365	t7l66xb_cells[T7L66XB_CELL_MMC].platform_data =
	366	&t7l66xb_cells[T7L66XB_CELL_MMC];
	367	t7l66xb_cells[T7L66XB_CELL_MMC].data_size =
	368	sizeof(t7l66xb_cells[T7L66XB_CELL_MMC]);
	369
56bf2bda SO	370	ret = mfd_add_devices(&dev->dev, dev->id,
	371	t7l66xb_cells, ARRAY_SIZE(t7l66xb_cells),
	372	iomem, t7l66xb->irq_base);
1f192015 IM	373
	374	if (!ret)
	375	return 0;
	376
	377	t7l66xb_detach_irq(dev);
	378	iounmap(t7l66xb->scr);
	379	err_ioremap:
	380	release_resource(&t7l66xb->rscr);
1f192015 IM	381	err_request_scr:
1f192015 IM	382	kfree(t7l66xb);
7acb706c IM	383	clk_put(t7l66xb->clk48m);
	384	err_clk48m_get:
	385	clk_put(t7l66xb->clk32k);
	386	err_clk32k_get:
	387	err_noirq:
1f192015 IM	388	return ret;
	389	}
	390
	391	static int t7l66xb_remove(struct platform_device *dev)
	392	{
	393	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
	394	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
	395	int ret;
	396
	397	ret = pdata->disable(dev);
7acb706c IM	398	clk_disable(t7l66xb->clk48m);
7acb706c IM	399	clk_put(t7l66xb->clk48m);
1f192015 IM	400	t7l66xb_detach_irq(dev);
	401	iounmap(t7l66xb->scr);
	402	release_resource(&t7l66xb->rscr);
56bf2bda	403	mfd_remove_devices(&dev->dev);
1f192015 IM	404	platform_set_drvdata(dev, NULL);
	405	kfree(t7l66xb);
	406
	407	return ret;
	408
	409	}
	410
	411	static struct platform_driver t7l66xb_platform_driver = {
	412	.driver = {
	413	.name = "t7l66xb",
	414	.owner = THIS_MODULE,
	415	},
	416	.suspend = t7l66xb_suspend,
	417	.resume = t7l66xb_resume,
	418	.probe = t7l66xb_probe,
	419	.remove = t7l66xb_remove,
	420	};
	421
	422	/--------------------------------------------------------------------------/
	423
	424	static int __init t7l66xb_init(void)
	425	{
	426	int retval = 0;
	427
	428	retval = platform_driver_register(&t7l66xb_platform_driver);
	429	return retval;
	430	}
	431
	432	static void __exit t7l66xb_exit(void)
	433	{
	434	platform_driver_unregister(&t7l66xb_platform_driver);
	435	}
	436
	437	module_init(t7l66xb_init);
	438	module_exit(t7l66xb_exit);
	439
	440	MODULE_DESCRIPTION("Toshiba T7L66XB core driver");
	441	MODULE_LICENSE("GPL v2");
	442	MODULE_AUTHOR("Ian Molton");
	443	MODULE_ALIAS("platform:t7l66xb");