[net-next-2.6.git] / drivers / parport / parport_sunbpp.c

/* parport_sunbpp.c: Parallel-port routines for SBUS
 * 
 * Author: Derrick J. Brashear <shadow@dementia.org>
 *
 * based on work by:
 *          Phil Blundell <philb@gnu.org>
 *          Tim Waugh <tim@cyberelk.demon.co.uk>
 *	    Jose Renau <renau@acm.org>
 *          David Campbell <campbell@tirian.che.curtin.edu.au>
 *          Grant Guenther <grant@torque.net>
 *          Eddie C. Dost <ecd@skynet.be>
 *          Stephen Williams (steve@icarus.com)
 *          Gus Baldauf (gbaldauf@ix.netcom.com)
 *          Peter Zaitcev
 *          Tom Dyas
 *
 * Updated to new SBUS device framework: David S. Miller <davem@davemloft.net>
 * 
 */

#include <linux/string.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_device.h>

#include <linux/parport.h>

#include <asm/ptrace.h>
#include <linux/interrupt.h>

#include <asm/io.h>
#include <asm/oplib.h>           /* OpenProm Library */
#include <asm/dma.h>             /* BPP uses LSI 64854 for DMA */
#include <asm/irq.h>
#include <asm/sunbpp.h>

#undef __SUNBPP_DEBUG
#ifdef __SUNBPP_DEBUG
#define dprintk(x) printk x
#else
#define dprintk(x)
#endif

static void parport_sunbpp_disable_irq(struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	u32 tmp;

	tmp = sbus_readl(&regs->p_csr);
	tmp &= ~DMA_INT_ENAB;
	sbus_writel(tmp, &regs->p_csr);
}

static void parport_sunbpp_enable_irq(struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	u32 tmp;

	tmp = sbus_readl(&regs->p_csr);
	tmp |= DMA_INT_ENAB;
	sbus_writel(tmp, &regs->p_csr);
}

static void parport_sunbpp_write_data(struct parport *p, unsigned char d)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;

	sbus_writeb(d, &regs->p_dr);
	dprintk((KERN_DEBUG "wrote 0x%x\n", d));
}

static unsigned char parport_sunbpp_read_data(struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;

	return sbus_readb(&regs->p_dr);
}

#if 0
static void control_pc_to_sunbpp(struct parport *p, unsigned char status)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	unsigned char value_or = sbus_readb(&regs->p_or);

	if (status & PARPORT_CONTROL_STROBE) 
		value_tcr |= P_TCR_DS;
	if (status & PARPORT_CONTROL_AUTOFD) 
		value_or |= P_OR_AFXN;
	if (status & PARPORT_CONTROL_INIT) 
		value_or |= P_OR_INIT;
	if (status & PARPORT_CONTROL_SELECT) 
		value_or |= P_OR_SLCT_IN;

	sbus_writeb(value_or, &regs->p_or);
	sbus_writeb(value_tcr, &regs->p_tcr);
}
#endif

static unsigned char status_sunbpp_to_pc(struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	unsigned char bits = 0;
	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	unsigned char value_ir = sbus_readb(&regs->p_ir);

	if (!(value_ir & P_IR_ERR))
		bits |= PARPORT_STATUS_ERROR;
	if (!(value_ir & P_IR_SLCT))
		bits |= PARPORT_STATUS_SELECT;
	if (!(value_ir & P_IR_PE))
		bits |= PARPORT_STATUS_PAPEROUT;
	if (value_tcr & P_TCR_ACK)
		bits |= PARPORT_STATUS_ACK;
	if (!(value_tcr & P_TCR_BUSY))
		bits |= PARPORT_STATUS_BUSY;

	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
	return bits;
}

static unsigned char control_sunbpp_to_pc(struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	unsigned char bits = 0;
	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	unsigned char value_or = sbus_readb(&regs->p_or);

	if (!(value_tcr & P_TCR_DS))
		bits |= PARPORT_CONTROL_STROBE;
	if (!(value_or & P_OR_AFXN))
		bits |= PARPORT_CONTROL_AUTOFD;
	if (!(value_or & P_OR_INIT))
		bits |= PARPORT_CONTROL_INIT;
	if (value_or & P_OR_SLCT_IN)
		bits |= PARPORT_CONTROL_SELECT;

	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
	return bits;
}

static unsigned char parport_sunbpp_read_control(struct parport *p)
{
	return control_sunbpp_to_pc(p);
}

static unsigned char parport_sunbpp_frob_control(struct parport *p,
						 unsigned char mask,
						 unsigned char val)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	unsigned char value_or = sbus_readb(&regs->p_or);

	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
		 value_tcr, value_or));
	if (mask & PARPORT_CONTROL_STROBE) {
		if (val & PARPORT_CONTROL_STROBE) {
			value_tcr &= ~P_TCR_DS;
		} else {
			value_tcr |= P_TCR_DS;
		}
	}
	if (mask & PARPORT_CONTROL_AUTOFD) {
		if (val & PARPORT_CONTROL_AUTOFD) {
			value_or &= ~P_OR_AFXN;
		} else {
			value_or |= P_OR_AFXN;
		}
	}
	if (mask & PARPORT_CONTROL_INIT) {
		if (val & PARPORT_CONTROL_INIT) {
			value_or &= ~P_OR_INIT;
		} else {
			value_or |= P_OR_INIT;
		}
	}
	if (mask & PARPORT_CONTROL_SELECT) {
		if (val & PARPORT_CONTROL_SELECT) {
			value_or |= P_OR_SLCT_IN;
		} else {
			value_or &= ~P_OR_SLCT_IN;
		}
	}

	sbus_writeb(value_or, &regs->p_or);
	sbus_writeb(value_tcr, &regs->p_tcr);
	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
		 value_tcr, value_or));
	return parport_sunbpp_read_control(p);
}

static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
{
	const unsigned char wm = (PARPORT_CONTROL_STROBE |
				  PARPORT_CONTROL_AUTOFD |
				  PARPORT_CONTROL_INIT |
				  PARPORT_CONTROL_SELECT);

	parport_sunbpp_frob_control (p, wm, d & wm);
}

static unsigned char parport_sunbpp_read_status(struct parport *p)
{
	return status_sunbpp_to_pc(p);
}

static void parport_sunbpp_data_forward (struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	unsigned char value_tcr = sbus_readb(&regs->p_tcr);

	dprintk((KERN_DEBUG "forward\n"));
	value_tcr &= ~P_TCR_DIR;
	sbus_writeb(value_tcr, &regs->p_tcr);
}

static void parport_sunbpp_data_reverse (struct parport *p)
{
	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
	u8 val = sbus_readb(&regs->p_tcr);

	dprintk((KERN_DEBUG "reverse\n"));
	val |= P_TCR_DIR;
	sbus_writeb(val, &regs->p_tcr);
}

static void parport_sunbpp_init_state(struct pardevice *dev, struct parport_state *s)
{
	s->u.pc.ctr = 0xc;
	s->u.pc.ecr = 0x0;
}

static void parport_sunbpp_save_state(struct parport *p, struct parport_state *s)
{
	s->u.pc.ctr = parport_sunbpp_read_control(p);
}

static void parport_sunbpp_restore_state(struct parport *p, struct parport_state *s)
{
	parport_sunbpp_write_control(p, s->u.pc.ctr);
}

static struct parport_operations parport_sunbpp_ops = 
{
	.write_data	= parport_sunbpp_write_data,
	.read_data	= parport_sunbpp_read_data,

	.write_control	= parport_sunbpp_write_control,
	.read_control	= parport_sunbpp_read_control,
	.frob_control	= parport_sunbpp_frob_control,

	.read_status	= parport_sunbpp_read_status,

	.enable_irq	= parport_sunbpp_enable_irq,
	.disable_irq	= parport_sunbpp_disable_irq,

	.data_forward	= parport_sunbpp_data_forward,
	.data_reverse	= parport_sunbpp_data_reverse,

	.init_state	= parport_sunbpp_init_state,
	.save_state	= parport_sunbpp_save_state,
	.restore_state	= parport_sunbpp_restore_state,

	.epp_write_data	= parport_ieee1284_epp_write_data,
	.epp_read_data	= parport_ieee1284_epp_read_data,
	.epp_write_addr	= parport_ieee1284_epp_write_addr,
	.epp_read_addr	= parport_ieee1284_epp_read_addr,

	.ecp_write_data	= parport_ieee1284_ecp_write_data,
	.ecp_read_data	= parport_ieee1284_ecp_read_data,
	.ecp_write_addr	= parport_ieee1284_ecp_write_addr,

	.compat_write_data	= parport_ieee1284_write_compat,
	.nibble_read_data	= parport_ieee1284_read_nibble,
	.byte_read_data		= parport_ieee1284_read_byte,

	.owner		= THIS_MODULE,
};

static int __devinit bpp_probe(struct platform_device *op, const struct of_device_id *match)
{
	struct parport_operations *ops;
	struct bpp_regs __iomem *regs;
	int irq, dma, err = 0, size;
	unsigned char value_tcr;
	void __iomem *base;
	struct parport *p;

	irq = op->archdata.irqs[0];
	base = of_ioremap(&op->resource[0], 0,
			  resource_size(&op->resource[0]),
			  "sunbpp");
	if (!base)
		return -ENODEV;

	size = resource_size(&op->resource[0]);
	dma = PARPORT_DMA_NONE;

	ops = kmalloc(sizeof(struct parport_operations), GFP_KERNEL);
        if (!ops)
		goto out_unmap;

        memcpy (ops, &parport_sunbpp_ops, sizeof(struct parport_operations));

	dprintk(("register_port\n"));
	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
		goto out_free_ops;

	p->size = size;
	p->dev = &op->dev;

	if ((err = request_irq(p->irq, parport_irq_handler,
			       IRQF_SHARED, p->name, p)) != 0) {
		goto out_put_port;
	}

	parport_sunbpp_enable_irq(p);

	regs = (struct bpp_regs __iomem *)p->base;

	value_tcr = sbus_readb(&regs->p_tcr);
	value_tcr &= ~P_TCR_DIR;
	sbus_writeb(value_tcr, &regs->p_tcr);

	printk(KERN_INFO "%s: sunbpp at 0x%lx\n", p->name, p->base);

	dev_set_drvdata(&op->dev, p);

	parport_announce_port(p);

	return 0;

out_put_port:
	parport_put_port(p);

out_free_ops:
	kfree(ops);

out_unmap:
	of_iounmap(&op->resource[0], base, size);

	return err;
}

static int __devexit bpp_remove(struct platform_device *op)
{
	struct parport *p = dev_get_drvdata(&op->dev);
	struct parport_operations *ops = p->ops;

	parport_remove_port(p);

	if (p->irq != PARPORT_IRQ_NONE) {
		parport_sunbpp_disable_irq(p);
		free_irq(p->irq, p);
	}

	of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
	parport_put_port(p);
	kfree(ops);

	dev_set_drvdata(&op->dev, NULL);

	return 0;
}

static const struct of_device_id bpp_match[] = {
	{
		.name = "SUNW,bpp",
	},
	{},
};

MODULE_DEVICE_TABLE(of, bpp_match);

static struct of_platform_driver bpp_sbus_driver = {
	.driver = {
		.name = "bpp",
		.owner = THIS_MODULE,
		.of_match_table = bpp_match,
	},
	.probe		= bpp_probe,
	.remove		= __devexit_p(bpp_remove),
};

static int __init parport_sunbpp_init(void)
{
	return of_register_platform_driver(&bpp_sbus_driver);
}

static void __exit parport_sunbpp_exit(void)
{
	of_unregister_platform_driver(&bpp_sbus_driver);
}

MODULE_AUTHOR("Derrick J Brashear");
MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");

module_init(parport_sunbpp_init)
module_exit(parport_sunbpp_exit)
Commit	Line	Data
4f62d158	1	/* parport_sunbpp.c: Parallel-port routines for SBUS
1da177e4 LT	2	*
	3	* Author: Derrick J. Brashear <shadow@dementia.org>
	4	*
	5	* based on work by:
	6	* Phil Blundell <philb@gnu.org>
	7	* Tim Waugh <tim@cyberelk.demon.co.uk>
	8	* Jose Renau <renau@acm.org>
	9	* David Campbell <campbell@tirian.che.curtin.edu.au>
	10	* Grant Guenther <grant@torque.net>
	11	* Eddie C. Dost <ecd@skynet.be>
	12	* Stephen Williams (steve@icarus.com)
	13	* Gus Baldauf (gbaldauf@ix.netcom.com)
	14	* Peter Zaitcev
	15	* Tom Dyas
4f62d158 DM	16	*
	17	* Updated to new SBUS device framework: David S. Miller <davem@davemloft.net>
	18	*
1da177e4 LT	19	*/
	20
	21	#include <linux/string.h>
	22	#include <linux/module.h>
	23	#include <linux/delay.h>
	24	#include <linux/errno.h>
	25	#include <linux/ioport.h>
	26	#include <linux/kernel.h>
	27	#include <linux/slab.h>
	28	#include <linux/init.h>
27167e0e DM	29	#include <linux/of.h>
27167e0e DM	30	#include <linux/of_device.h>
1da177e4 LT	31
	32	#include <linux/parport.h>
	33
	34	#include <asm/ptrace.h>
	35	#include <linux/interrupt.h>
	36
	37	#include <asm/io.h>
	38	#include <asm/oplib.h> /* OpenProm Library */
1da177e4 LT	39	#include <asm/dma.h> /* BPP uses LSI 64854 for DMA */
	40	#include <asm/irq.h>
	41	#include <asm/sunbpp.h>
	42
	43	#undef __SUNBPP_DEBUG
	44	#ifdef __SUNBPP_DEBUG
	45	#define dprintk(x) printk x
	46	#else
	47	#define dprintk(x)
	48	#endif
	49
1da177e4 LT	50	static void parport_sunbpp_disable_irq(struct parport *p)
	51	{
	52	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	53	u32 tmp;
	54
	55	tmp = sbus_readl(&regs->p_csr);
	56	tmp &= ~DMA_INT_ENAB;
	57	sbus_writel(tmp, &regs->p_csr);
	58	}
	59
	60	static void parport_sunbpp_enable_irq(struct parport *p)
	61	{
	62	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	63	u32 tmp;
	64
	65	tmp = sbus_readl(&regs->p_csr);
	66	tmp \|= DMA_INT_ENAB;
	67	sbus_writel(tmp, &regs->p_csr);
	68	}
	69
	70	static void parport_sunbpp_write_data(struct parport *p, unsigned char d)
	71	{
	72	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	73
	74	sbus_writeb(d, &regs->p_dr);
	75	dprintk((KERN_DEBUG "wrote 0x%x\n", d));
	76	}
	77
	78	static unsigned char parport_sunbpp_read_data(struct parport *p)
	79	{
	80	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	81
	82	return sbus_readb(&regs->p_dr);
	83	}
	84
	85	#if 0
	86	static void control_pc_to_sunbpp(struct parport *p, unsigned char status)
	87	{
	88	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	89	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	90	unsigned char value_or = sbus_readb(&regs->p_or);
	91
	92	if (status & PARPORT_CONTROL_STROBE)
	93	value_tcr \|= P_TCR_DS;
	94	if (status & PARPORT_CONTROL_AUTOFD)
	95	value_or \|= P_OR_AFXN;
	96	if (status & PARPORT_CONTROL_INIT)
	97	value_or \|= P_OR_INIT;
	98	if (status & PARPORT_CONTROL_SELECT)
	99	value_or \|= P_OR_SLCT_IN;
	100
	101	sbus_writeb(value_or, &regs->p_or);
	102	sbus_writeb(value_tcr, &regs->p_tcr);
	103	}
	104	#endif
	105
	106	static unsigned char status_sunbpp_to_pc(struct parport *p)
	107	{
	108	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	109	unsigned char bits = 0;
	110	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	111	unsigned char value_ir = sbus_readb(&regs->p_ir);
	112
	113	if (!(value_ir & P_IR_ERR))
114	bits \|= PARPORT_STATUS_ERROR;
115	if (!(value_ir & P_IR_SLCT))
116	bits \|= PARPORT_STATUS_SELECT;
117	if (!(value_ir & P_IR_PE))
118	bits \|= PARPORT_STATUS_PAPEROUT;
119	if (value_tcr & P_TCR_ACK)
120	bits \|= PARPORT_STATUS_ACK;
121	if (!(value_tcr & P_TCR_BUSY))
122	bits \|= PARPORT_STATUS_BUSY;
123
5a68b2e3	124	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
1da177e4 LT	125	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
	126	return bits;
	127	}
	128
	129	static unsigned char control_sunbpp_to_pc(struct parport *p)
	130	{
	131	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	132	unsigned char bits = 0;
	133	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	134	unsigned char value_or = sbus_readb(&regs->p_or);
	135
	136	if (!(value_tcr & P_TCR_DS))
	137	bits \|= PARPORT_CONTROL_STROBE;
	138	if (!(value_or & P_OR_AFXN))
	139	bits \|= PARPORT_CONTROL_AUTOFD;
	140	if (!(value_or & P_OR_INIT))
	141	bits \|= PARPORT_CONTROL_INIT;
	142	if (value_or & P_OR_SLCT_IN)
	143	bits \|= PARPORT_CONTROL_SELECT;
	144
5a68b2e3	145	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
1da177e4 LT	146	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
	147	return bits;
	148	}
	149
	150	static unsigned char parport_sunbpp_read_control(struct parport *p)
	151	{
	152	return control_sunbpp_to_pc(p);
	153	}
	154
	155	static unsigned char parport_sunbpp_frob_control(struct parport *p,
	156	unsigned char mask,
	157	unsigned char val)
	158	{
	159	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	160	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	161	unsigned char value_or = sbus_readb(&regs->p_or);
	162
5a68b2e3 DM	163	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
5a68b2e3 DM	164	value_tcr, value_or));
1da177e4 LT	165	if (mask & PARPORT_CONTROL_STROBE) {
	166	if (val & PARPORT_CONTROL_STROBE) {
	167	value_tcr &= ~P_TCR_DS;
	168	} else {
	169	value_tcr \|= P_TCR_DS;
	170	}
	171	}
	172	if (mask & PARPORT_CONTROL_AUTOFD) {
	173	if (val & PARPORT_CONTROL_AUTOFD) {
	174	value_or &= ~P_OR_AFXN;
	175	} else {
	176	value_or \|= P_OR_AFXN;
	177	}
	178	}
	179	if (mask & PARPORT_CONTROL_INIT) {
	180	if (val & PARPORT_CONTROL_INIT) {
	181	value_or &= ~P_OR_INIT;
	182	} else {
	183	value_or \|= P_OR_INIT;
	184	}
	185	}
	186	if (mask & PARPORT_CONTROL_SELECT) {
	187	if (val & PARPORT_CONTROL_SELECT) {
	188	value_or \|= P_OR_SLCT_IN;
	189	} else {
	190	value_or &= ~P_OR_SLCT_IN;
	191	}
	192	}
	193
	194	sbus_writeb(value_or, &regs->p_or);
	195	sbus_writeb(value_tcr, &regs->p_tcr);
5a68b2e3 DM	196	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
5a68b2e3 DM	197	value_tcr, value_or));
1da177e4 LT	198	return parport_sunbpp_read_control(p);
	199	}
	200
	201	static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
	202	{
	203	const unsigned char wm = (PARPORT_CONTROL_STROBE \|
	204	PARPORT_CONTROL_AUTOFD \|
	205	PARPORT_CONTROL_INIT \|
	206	PARPORT_CONTROL_SELECT);
	207
	208	parport_sunbpp_frob_control (p, wm, d & wm);
	209	}
	210
	211	static unsigned char parport_sunbpp_read_status(struct parport *p)
	212	{
	213	return status_sunbpp_to_pc(p);
	214	}
	215
	216	static void parport_sunbpp_data_forward (struct parport *p)
	217	{
	218	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	219	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
	220
	221	dprintk((KERN_DEBUG "forward\n"));
	222	value_tcr &= ~P_TCR_DIR;
	223	sbus_writeb(value_tcr, &regs->p_tcr);
	224	}
	225
	226	static void parport_sunbpp_data_reverse (struct parport *p)
	227	{
	228	struct bpp_regs __iomem regs = (struct bpp_regs __iomem )p->base;
	229	u8 val = sbus_readb(&regs->p_tcr);
	230
	231	dprintk((KERN_DEBUG "reverse\n"));
	232	val \|= P_TCR_DIR;
	233	sbus_writeb(val, &regs->p_tcr);
	234	}
	235
	236	static void parport_sunbpp_init_state(struct pardevice dev, struct parport_state s)
	237	{
	238	s->u.pc.ctr = 0xc;
	239	s->u.pc.ecr = 0x0;
	240	}
	241
	242	static void parport_sunbpp_save_state(struct parport p, struct parport_state s)
	243	{
	244	s->u.pc.ctr = parport_sunbpp_read_control(p);
	245	}
	246
	247	static void parport_sunbpp_restore_state(struct parport p, struct parport_state s)
	248	{
	249	parport_sunbpp_write_control(p, s->u.pc.ctr);
	250	}
	251
	252	static struct parport_operations parport_sunbpp_ops =
	253	{
	254	.write_data = parport_sunbpp_write_data,
	255	.read_data = parport_sunbpp_read_data,
	256
	257	.write_control = parport_sunbpp_write_control,
	258	.read_control = parport_sunbpp_read_control,
	259	.frob_control = parport_sunbpp_frob_control,
	260
	261	.read_status = parport_sunbpp_read_status,
262
263	.enable_irq = parport_sunbpp_enable_irq,
264	.disable_irq = parport_sunbpp_disable_irq,
265
266	.data_forward = parport_sunbpp_data_forward,
267	.data_reverse = parport_sunbpp_data_reverse,
268
269	.init_state = parport_sunbpp_init_state,
270	.save_state = parport_sunbpp_save_state,
271	.restore_state = parport_sunbpp_restore_state,
272
273	.epp_write_data = parport_ieee1284_epp_write_data,
274	.epp_read_data = parport_ieee1284_epp_read_data,
275	.epp_write_addr = parport_ieee1284_epp_write_addr,
276	.epp_read_addr = parport_ieee1284_epp_read_addr,
277
278	.ecp_write_data = parport_ieee1284_ecp_write_data,
279	.ecp_read_data = parport_ieee1284_ecp_read_data,
280	.ecp_write_addr = parport_ieee1284_ecp_write_addr,
281
282	.compat_write_data = parport_ieee1284_write_compat,
283	.nibble_read_data = parport_ieee1284_read_nibble,
284	.byte_read_data = parport_ieee1284_read_byte,
285
286	.owner = THIS_MODULE,
287	};
288
2dc11581	289	static int __devinit bpp_probe(struct platform_device op, const struct of_device_id match)
1da177e4	290	{
1da177e4	291	struct parport_operations *ops;
1da177e4	292	struct bpp_regs __iomem *regs;
27167e0e	293	int irq, dma, err = 0, size;
1da177e4	294	unsigned char value_tcr;
27167e0e DM	295	void __iomem *base;
27167e0e DM	296	struct parport *p;
1da177e4	297
1636f8ac	298	irq = op->archdata.irqs[0];
27167e0e DM	299	base = of_ioremap(&op->resource[0], 0,
	300	resource_size(&op->resource[0]),
	301	"sunbpp");
1da177e4	302	if (!base)
4f62d158	303	return -ENODEV;
1da177e4	304
27167e0e	305	size = resource_size(&op->resource[0]);
1da177e4 LT	306	dma = PARPORT_DMA_NONE;
1da177e4 LT	307
4f62d158	308	ops = kmalloc(sizeof(struct parport_operations), GFP_KERNEL);
1da177e4	309	if (!ops)
4f62d158	310	goto out_unmap;
1da177e4	311
27167e0e	312	memcpy (ops, &parport_sunbpp_ops, sizeof(struct parport_operations));
1da177e4 LT	313
	314	dprintk(("register_port\n"));
	315	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
4f62d158	316	goto out_free_ops;
1da177e4 LT	317
1da177e4 LT	318	p->size = size;
27167e0e	319	p->dev = &op->dev;
1da177e4	320
3f2e40df	321	if ((err = request_irq(p->irq, parport_irq_handler,
dace1453	322	IRQF_SHARED, p->name, p)) != 0) {
4f62d158	323	goto out_put_port;
1da177e4	324	}
4f62d158	325
1da177e4 LT	326	parport_sunbpp_enable_irq(p);
	327
	328	regs = (struct bpp_regs __iomem *)p->base;
4f62d158	329
1da177e4 LT	330	value_tcr = sbus_readb(&regs->p_tcr);
	331	value_tcr &= ~P_TCR_DIR;
	332	sbus_writeb(value_tcr, &regs->p_tcr);
	333
	334	printk(KERN_INFO "%s: sunbpp at 0x%lx\n", p->name, p->base);
1da177e4	335
27167e0e	336	dev_set_drvdata(&op->dev, p);
4f62d158 DM	337
	338	parport_announce_port(p);
	339
	340	return 0;
1da177e4	341
4f62d158	342	out_put_port:
1da177e4	343	parport_put_port(p);
4f62d158 DM	344
4f62d158 DM	345	out_free_ops:
1da177e4	346	kfree(ops);
4f62d158 DM	347
4f62d158 DM	348	out_unmap:
27167e0e	349	of_iounmap(&op->resource[0], base, size);
4f62d158	350
1da177e4 LT	351	return err;
	352	}
	353
2dc11581	354	static int __devexit bpp_remove(struct platform_device *op)
4f62d158	355	{
27167e0e	356	struct parport *p = dev_get_drvdata(&op->dev);
4f62d158 DM	357	struct parport_operations *ops = p->ops;
	358
	359	parport_remove_port(p);
	360
	361	if (p->irq != PARPORT_IRQ_NONE) {
	362	parport_sunbpp_disable_irq(p);
	363	free_irq(p->irq, p);
1da177e4	364	}
4f62d158	365
27167e0e	366	of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
4f62d158 DM	367	parport_put_port(p);
	368	kfree(ops);
	369
27167e0e	370	dev_set_drvdata(&op->dev, NULL);
4f62d158 DM	371
	372	return 0;
	373	}
	374
fd098316	375	static const struct of_device_id bpp_match[] = {
4f62d158 DM	376	{
	377	.name = "SUNW,bpp",
	378	},
	379	{},
	380	};
	381
09ec4314	382	MODULE_DEVICE_TABLE(of, bpp_match);
4f62d158 DM	383
4f62d158 DM	384	static struct of_platform_driver bpp_sbus_driver = {
4018294b GL	385	.driver = {
	386	.name = "bpp",
	387	.owner = THIS_MODULE,
	388	.of_match_table = bpp_match,
	389	},
4f62d158 DM	390	.probe = bpp_probe,
	391	.remove = __devexit_p(bpp_remove),
	392	};
	393
	394	static int __init parport_sunbpp_init(void)
	395	{
1ab1d63a	396	return of_register_platform_driver(&bpp_sbus_driver);
1da177e4 LT	397	}
	398
	399	static void __exit parport_sunbpp_exit(void)
	400	{
1ab1d63a	401	of_unregister_platform_driver(&bpp_sbus_driver);
1da177e4 LT	402	}
	403
	404	MODULE_AUTHOR("Derrick J Brashear");
	405	MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
	406	MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
4f62d158	407	MODULE_VERSION("2.0");
1da177e4 LT	408	MODULE_LICENSE("GPL");
	409
	410	module_init(parport_sunbpp_init)
	411	module_exit(parport_sunbpp_exit)