[linux-block.git] / drivers / parport / parport_ax88796.c

// SPDX-License-Identifier: GPL-2.0-only
/* linux/drivers/parport/parport_ax88796.c
 *
 * (c) 2005,2006 Simtec Electronics
 *	Ben Dooks <ben@simtec.co.uk>
*/

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/parport.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

#include <asm/io.h>
#include <asm/irq.h>

#define AX_SPR_BUSY		(1<<7)
#define AX_SPR_ACK		(1<<6)
#define AX_SPR_PE		(1<<5)
#define AX_SPR_SLCT		(1<<4)
#define AX_SPR_ERR		(1<<3)

#define AX_CPR_nDOE		(1<<5)
#define AX_CPR_SLCTIN		(1<<3)
#define AX_CPR_nINIT		(1<<2)
#define AX_CPR_ATFD		(1<<1)
#define AX_CPR_STRB		(1<<0)

struct ax_drvdata {
	struct parport		*parport;
	struct parport_state	 suspend;

	struct device		*dev;
	struct resource		*io;

	unsigned char		 irq_enabled;

	void __iomem		*base;
	void __iomem		*spp_data;
	void __iomem		*spp_spr;
	void __iomem		*spp_cpr;
};

static inline struct ax_drvdata *pp_to_drv(struct parport *p)
{
	return p->private_data;
}

static unsigned char
parport_ax88796_read_data(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);

	return readb(dd->spp_data);
}

static void
parport_ax88796_write_data(struct parport *p, unsigned char data)
{
	struct ax_drvdata *dd = pp_to_drv(p);

	writeb(data, dd->spp_data);
}

static unsigned char
parport_ax88796_read_control(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	unsigned int cpr = readb(dd->spp_cpr);
	unsigned int ret = 0;

	if (!(cpr & AX_CPR_STRB))
		ret |= PARPORT_CONTROL_STROBE;

	if (!(cpr & AX_CPR_ATFD))
		ret |= PARPORT_CONTROL_AUTOFD;

	if (cpr & AX_CPR_nINIT)
		ret |= PARPORT_CONTROL_INIT;

	if (!(cpr & AX_CPR_SLCTIN))
		ret |= PARPORT_CONTROL_SELECT;

	return ret;
}

static void
parport_ax88796_write_control(struct parport *p, unsigned char control)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	unsigned int cpr = readb(dd->spp_cpr);

	cpr &= AX_CPR_nDOE;

	if (!(control & PARPORT_CONTROL_STROBE))
		cpr |= AX_CPR_STRB;

	if (!(control & PARPORT_CONTROL_AUTOFD))
		cpr |= AX_CPR_ATFD;

	if (control & PARPORT_CONTROL_INIT)
		cpr |= AX_CPR_nINIT;

	if (!(control & PARPORT_CONTROL_SELECT))
		cpr |= AX_CPR_SLCTIN;

	dev_dbg(dd->dev, "write_control: ctrl=%02x, cpr=%02x\n", control, cpr);
	writeb(cpr, dd->spp_cpr);

	if (parport_ax88796_read_control(p) != control) {
		dev_err(dd->dev, "write_control: read != set (%02x, %02x)\n",
			parport_ax88796_read_control(p), control);
	}
}

static unsigned char
parport_ax88796_read_status(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	unsigned int status = readb(dd->spp_spr);
	unsigned int ret = 0;

	if (status & AX_SPR_BUSY)
		ret |= PARPORT_STATUS_BUSY;

	if (status & AX_SPR_ACK)
		ret |= PARPORT_STATUS_ACK;

	if (status & AX_SPR_ERR)
		ret |= PARPORT_STATUS_ERROR;

	if (status & AX_SPR_SLCT)
		ret |= PARPORT_STATUS_SELECT;

	if (status & AX_SPR_PE)
		ret |= PARPORT_STATUS_PAPEROUT;

	return ret;
}

static unsigned char
parport_ax88796_frob_control(struct parport *p, unsigned char mask,
			     unsigned char val)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	unsigned char old = parport_ax88796_read_control(p);

	dev_dbg(dd->dev, "frob: mask=%02x, val=%02x, old=%02x\n",
		mask, val, old);

	parport_ax88796_write_control(p, (old & ~mask) | val);
	return old;
}

static void
parport_ax88796_enable_irq(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	unsigned long flags;

	local_irq_save(flags);
	if (!dd->irq_enabled) {
		enable_irq(p->irq);
		dd->irq_enabled = 1;
	}
	local_irq_restore(flags);
}

static void
parport_ax88796_disable_irq(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	unsigned long flags;

	local_irq_save(flags);
	if (dd->irq_enabled) {
		disable_irq(p->irq);
		dd->irq_enabled = 0;
	}
	local_irq_restore(flags);
}

static void
parport_ax88796_data_forward(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	void __iomem *cpr = dd->spp_cpr;

	writeb((readb(cpr) & ~AX_CPR_nDOE), cpr);
}

static void
parport_ax88796_data_reverse(struct parport *p)
{
	struct ax_drvdata *dd = pp_to_drv(p);
	void __iomem *cpr = dd->spp_cpr;

	writeb(readb(cpr) | AX_CPR_nDOE, cpr);
}

static void
parport_ax88796_init_state(struct pardevice *d, struct parport_state *s)
{
	struct ax_drvdata *dd = pp_to_drv(d->port);

	memset(s, 0, sizeof(struct parport_state));

	dev_dbg(dd->dev, "init_state: %p: state=%p\n", d, s);
	s->u.ax88796.cpr = readb(dd->spp_cpr);
}

static void
parport_ax88796_save_state(struct parport *p, struct parport_state *s)
{
	struct ax_drvdata *dd = pp_to_drv(p);

	dev_dbg(dd->dev, "save_state: %p: state=%p\n", p, s);
	s->u.ax88796.cpr = readb(dd->spp_cpr);
}

static void
parport_ax88796_restore_state(struct parport *p, struct parport_state *s)
{
	struct ax_drvdata *dd = pp_to_drv(p);

	dev_dbg(dd->dev, "restore_state: %p: state=%p\n", p, s);
	writeb(s->u.ax88796.cpr, dd->spp_cpr);
}

static struct parport_operations parport_ax88796_ops = {
	.write_data	= parport_ax88796_write_data,
	.read_data	= parport_ax88796_read_data,

	.write_control	= parport_ax88796_write_control,
	.read_control	= parport_ax88796_read_control,
	.frob_control	= parport_ax88796_frob_control,

	.read_status	= parport_ax88796_read_status,

	.enable_irq	= parport_ax88796_enable_irq,
	.disable_irq	= parport_ax88796_disable_irq,

	.data_forward	= parport_ax88796_data_forward,
	.data_reverse	= parport_ax88796_data_reverse,

	.init_state	= parport_ax88796_init_state,
	.save_state	= parport_ax88796_save_state,
	.restore_state	= parport_ax88796_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 parport_ax88796_probe(struct platform_device *pdev)
{
	struct device *_dev = &pdev->dev;
	struct ax_drvdata *dd;
	struct parport *pp;
	struct resource *res;
	unsigned long size;
	int spacing;
	int irq;
	int ret;

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

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res == NULL) {
		dev_err(_dev, "no MEM specified\n");
		ret = -ENXIO;
		goto exit_mem;
	}

	size = resource_size(res);
	spacing = size / 3;

	dd->io = request_mem_region(res->start, size, pdev->name);
	if (dd->io == NULL) {
		dev_err(_dev, "cannot reserve memory\n");
		ret = -ENXIO;
		goto exit_mem;
	}

	dd->base = ioremap(res->start, size);
	if (dd->base == NULL) {
		dev_err(_dev, "cannot ioremap region\n");
		ret = -ENXIO;
		goto exit_res;
	}

	irq = platform_get_irq(pdev, 0);
	if (irq <= 0)
		irq = PARPORT_IRQ_NONE;

	pp = parport_register_port((unsigned long)dd->base, irq,
				   PARPORT_DMA_NONE,
				   &parport_ax88796_ops);

	if (pp == NULL) {
		dev_err(_dev, "failed to register parallel port\n");
		ret = -ENOMEM;
		goto exit_unmap;
	}

	pp->private_data = dd;
	dd->parport = pp;
	dd->dev = _dev;

	dd->spp_data = dd->base;
	dd->spp_spr  = dd->base + (spacing * 1);
	dd->spp_cpr  = dd->base + (spacing * 2);

	/* initialise the port controls */
	writeb(AX_CPR_STRB, dd->spp_cpr);

	if (irq >= 0) {
		/* request irq */
		ret = request_irq(irq, parport_irq_handler,
				  IRQF_TRIGGER_FALLING, pdev->name, pp);

		if (ret < 0)
			goto exit_port;

		dd->irq_enabled = 1;
	}

	platform_set_drvdata(pdev, pp);

	dev_info(_dev, "attached parallel port driver\n");
	parport_announce_port(pp);

	return 0;

 exit_port:
	parport_remove_port(pp);
 exit_unmap:
	iounmap(dd->base);
 exit_res:
	release_mem_region(dd->io->start, size);
 exit_mem:
	kfree(dd);
	return ret;
}

static int parport_ax88796_remove(struct platform_device *pdev)
{
	struct parport *p = platform_get_drvdata(pdev);
	struct ax_drvdata *dd = pp_to_drv(p);

	free_irq(p->irq, p);
	parport_remove_port(p);
	iounmap(dd->base);
	release_mem_region(dd->io->start, resource_size(dd->io));
	kfree(dd);

	return 0;
}

#ifdef CONFIG_PM

static int parport_ax88796_suspend(struct platform_device *dev,
				   pm_message_t state)
{
	struct parport *p = platform_get_drvdata(dev);
	struct ax_drvdata *dd = pp_to_drv(p);

	parport_ax88796_save_state(p, &dd->suspend);
	writeb(AX_CPR_nDOE | AX_CPR_STRB, dd->spp_cpr);
	return 0;
}

static int parport_ax88796_resume(struct platform_device *dev)
{
	struct parport *p = platform_get_drvdata(dev);
	struct ax_drvdata *dd = pp_to_drv(p);

	parport_ax88796_restore_state(p, &dd->suspend);
	return 0;
}

#else
#define parport_ax88796_suspend NULL
#define parport_ax88796_resume  NULL
#endif

MODULE_ALIAS("platform:ax88796-pp");

static struct platform_driver axdrv = {
	.driver		= {
		.name	= "ax88796-pp",
	},
	.probe		= parport_ax88796_probe,
	.remove		= parport_ax88796_remove,
	.suspend	= parport_ax88796_suspend,
	.resume		= parport_ax88796_resume,
};

module_platform_driver(axdrv);

MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
MODULE_DESCRIPTION("AX88796 Parport parallel port driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
ad4063b0 BD	2	/* linux/drivers/parport/parport_ax88796.c
	3	*
	4	* (c) 2005,2006 Simtec Electronics
	5	* Ben Dooks <ben@simtec.co.uk>
ad4063b0 BD	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
	10	#include <linux/parport.h>
	11	#include <linux/interrupt.h>
	12	#include <linux/errno.h>
	13	#include <linux/platform_device.h>
5a0e3ad6	14	#include <linux/slab.h>
ad4063b0 BD	15
	16	#include <asm/io.h>
	17	#include <asm/irq.h>
	18
	19	#define AX_SPR_BUSY (1<<7)
	20	#define AX_SPR_ACK (1<<6)
	21	#define AX_SPR_PE (1<<5)
	22	#define AX_SPR_SLCT (1<<4)
	23	#define AX_SPR_ERR (1<<3)
	24
	25	#define AX_CPR_nDOE (1<<5)
	26	#define AX_CPR_SLCTIN (1<<3)
	27	#define AX_CPR_nINIT (1<<2)
	28	#define AX_CPR_ATFD (1<<1)
	29	#define AX_CPR_STRB (1<<0)
	30
	31	struct ax_drvdata {
	32	struct parport *parport;
	33	struct parport_state suspend;
	34
	35	struct device *dev;
	36	struct resource *io;
	37
	38	unsigned char irq_enabled;
	39
	40	void __iomem *base;
	41	void __iomem *spp_data;
	42	void __iomem *spp_spr;
	43	void __iomem *spp_cpr;
	44	};
	45
	46	static inline struct ax_drvdata pp_to_drv(struct parport p)
	47	{
	48	return p->private_data;
	49	}
	50
	51	static unsigned char
	52	parport_ax88796_read_data(struct parport *p)
	53	{
	54	struct ax_drvdata *dd = pp_to_drv(p);
	55
	56	return readb(dd->spp_data);
	57	}
	58
	59	static void
	60	parport_ax88796_write_data(struct parport *p, unsigned char data)
	61	{
	62	struct ax_drvdata *dd = pp_to_drv(p);
	63
	64	writeb(data, dd->spp_data);
	65	}
	66
	67	static unsigned char
	68	parport_ax88796_read_control(struct parport *p)
	69	{
	70	struct ax_drvdata *dd = pp_to_drv(p);
	71	unsigned int cpr = readb(dd->spp_cpr);
	72	unsigned int ret = 0;
	73
	74	if (!(cpr & AX_CPR_STRB))
	75	ret \|= PARPORT_CONTROL_STROBE;
	76
	77	if (!(cpr & AX_CPR_ATFD))
	78	ret \|= PARPORT_CONTROL_AUTOFD;
79
80	if (cpr & AX_CPR_nINIT)
81	ret \|= PARPORT_CONTROL_INIT;
82
83	if (!(cpr & AX_CPR_SLCTIN))
84	ret \|= PARPORT_CONTROL_SELECT;
85
86	return ret;
87	}
88
89	static void
90	parport_ax88796_write_control(struct parport *p, unsigned char control)
91	{
92	struct ax_drvdata *dd = pp_to_drv(p);
93	unsigned int cpr = readb(dd->spp_cpr);
94
95	cpr &= AX_CPR_nDOE;
96
97	if (!(control & PARPORT_CONTROL_STROBE))
98	cpr \|= AX_CPR_STRB;
99
100	if (!(control & PARPORT_CONTROL_AUTOFD))
101	cpr \|= AX_CPR_ATFD;
102
103	if (control & PARPORT_CONTROL_INIT)
104	cpr \|= AX_CPR_nINIT;
105
106	if (!(control & PARPORT_CONTROL_SELECT))
107	cpr \|= AX_CPR_SLCTIN;
108
109	dev_dbg(dd->dev, "write_control: ctrl=%02x, cpr=%02x\n", control, cpr);
110	writeb(cpr, dd->spp_cpr);
111
112	if (parport_ax88796_read_control(p) != control) {
113	dev_err(dd->dev, "write_control: read != set (%02x, %02x)\n",
114	parport_ax88796_read_control(p), control);
115	}
116	}
117
118	static unsigned char
119	parport_ax88796_read_status(struct parport *p)
120	{
121	struct ax_drvdata *dd = pp_to_drv(p);
122	unsigned int status = readb(dd->spp_spr);
123	unsigned int ret = 0;
124
125	if (status & AX_SPR_BUSY)
126	ret \|= PARPORT_STATUS_BUSY;
127
128	if (status & AX_SPR_ACK)
129	ret \|= PARPORT_STATUS_ACK;
130
131	if (status & AX_SPR_ERR)
132	ret \|= PARPORT_STATUS_ERROR;
133
134	if (status & AX_SPR_SLCT)
135	ret \|= PARPORT_STATUS_SELECT;
136
137	if (status & AX_SPR_PE)
138	ret \|= PARPORT_STATUS_PAPEROUT;
139
140	return ret;
141	}
142
143	static unsigned char
144	parport_ax88796_frob_control(struct parport *p, unsigned char mask,
145	unsigned char val)
146	{
147	struct ax_drvdata *dd = pp_to_drv(p);
148	unsigned char old = parport_ax88796_read_control(p);
149
150	dev_dbg(dd->dev, "frob: mask=%02x, val=%02x, old=%02x\n",
151	mask, val, old);
152
153	parport_ax88796_write_control(p, (old & ~mask) \| val);
154	return old;
155	}
156
157	static void
158	parport_ax88796_enable_irq(struct parport *p)
159	{
160	struct ax_drvdata *dd = pp_to_drv(p);
161	unsigned long flags;
162
163	local_irq_save(flags);
164	if (!dd->irq_enabled) {
165	enable_irq(p->irq);
166	dd->irq_enabled = 1;
167	}
168	local_irq_restore(flags);
169	}
170
171	static void
172	parport_ax88796_disable_irq(struct parport *p)
173	{
174	struct ax_drvdata *dd = pp_to_drv(p);
175	unsigned long flags;
176
177	local_irq_save(flags);
178	if (dd->irq_enabled) {
179	disable_irq(p->irq);
180	dd->irq_enabled = 0;
181	}
182	local_irq_restore(flags);
183	}
184
185	static void
186	parport_ax88796_data_forward(struct parport *p)
187	{
188	struct ax_drvdata *dd = pp_to_drv(p);
189	void __iomem *cpr = dd->spp_cpr;
190
191	writeb((readb(cpr) & ~AX_CPR_nDOE), cpr);
192	}
193
194	static void
195	parport_ax88796_data_reverse(struct parport *p)
196	{
197	struct ax_drvdata *dd = pp_to_drv(p);
198	void __iomem *cpr = dd->spp_cpr;
199
200	writeb(readb(cpr) \| AX_CPR_nDOE, cpr);
201	}
202
203	static void
204	parport_ax88796_init_state(struct pardevice d, struct parport_state s)
205	{
206	struct ax_drvdata *dd = pp_to_drv(d->port);
207
208	memset(s, 0, sizeof(struct parport_state));
209
210	dev_dbg(dd->dev, "init_state: %p: state=%p\n", d, s);
211	s->u.ax88796.cpr = readb(dd->spp_cpr);
212	}
213
214	static void
215	parport_ax88796_save_state(struct parport p, struct parport_state s)
216	{
217	struct ax_drvdata *dd = pp_to_drv(p);
218
219	dev_dbg(dd->dev, "save_state: %p: state=%p\n", p, s);
220	s->u.ax88796.cpr = readb(dd->spp_cpr);
221	}
222
223	static void
224	parport_ax88796_restore_state(struct parport p, struct parport_state s)
225	{
226	struct ax_drvdata *dd = pp_to_drv(p);
227
228	dev_dbg(dd->dev, "restore_state: %p: state=%p\n", p, s);
229	writeb(s->u.ax88796.cpr, dd->spp_cpr);
230	}
231
ad4063b0 BD	232	static struct parport_operations parport_ax88796_ops = {
	233	.write_data = parport_ax88796_write_data,
	234	.read_data = parport_ax88796_read_data,
	235
	236	.write_control = parport_ax88796_write_control,
	237	.read_control = parport_ax88796_read_control,
	238	.frob_control = parport_ax88796_frob_control,
	239
	240	.read_status = parport_ax88796_read_status,
	241
	242	.enable_irq = parport_ax88796_enable_irq,
	243	.disable_irq = parport_ax88796_disable_irq,
	244
	245	.data_forward = parport_ax88796_data_forward,
	246	.data_reverse = parport_ax88796_data_reverse,
	247
	248	.init_state = parport_ax88796_init_state,
	249	.save_state = parport_ax88796_save_state,
	250	.restore_state = parport_ax88796_restore_state,
	251
	252	.epp_write_data = parport_ieee1284_epp_write_data,
	253	.epp_read_data = parport_ieee1284_epp_read_data,
	254	.epp_write_addr = parport_ieee1284_epp_write_addr,
	255	.epp_read_addr = parport_ieee1284_epp_read_addr,
	256
	257	.ecp_write_data = parport_ieee1284_ecp_write_data,
	258	.ecp_read_data = parport_ieee1284_ecp_read_data,
	259	.ecp_write_addr = parport_ieee1284_ecp_write_addr,
	260
	261	.compat_write_data = parport_ieee1284_write_compat,
	262	.nibble_read_data = parport_ieee1284_read_nibble,
	263	.byte_read_data = parport_ieee1284_read_byte,
	264
	265	.owner = THIS_MODULE,
	266	};
	267
	268	static int parport_ax88796_probe(struct platform_device *pdev)
	269	{
	270	struct device *_dev = &pdev->dev;
	271	struct ax_drvdata *dd;
520656c0	272	struct parport *pp;
ad4063b0 BD	273	struct resource *res;
	274	unsigned long size;
	275	int spacing;
	276	int irq;
	277	int ret;
	278
5e50654d	279	dd = kzalloc(sizeof(*dd), GFP_KERNEL);
d6906e7e	280	if (!dd)
ad4063b0	281	return -ENOMEM;
ad4063b0 BD	282
	283	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	284	if (res == NULL) {
	285	dev_err(_dev, "no MEM specified\n");
	286	ret = -ENXIO;
	287	goto exit_mem;
	288	}
	289
28f65c11	290	size = resource_size(res);
ad4063b0 BD	291	spacing = size / 3;
	292
	293	dd->io = request_mem_region(res->start, size, pdev->name);
	294	if (dd->io == NULL) {
	295	dev_err(_dev, "cannot reserve memory\n");
	296	ret = -ENXIO;
	297	goto exit_mem;
	298	}
	299
	300	dd->base = ioremap(res->start, size);
	301	if (dd->base == NULL) {
	302	dev_err(_dev, "cannot ioremap region\n");
	303	ret = -ENXIO;
	304	goto exit_res;
	305	}
	306
	307	irq = platform_get_irq(pdev, 0);
	308	if (irq <= 0)
	309	irq = PARPORT_IRQ_NONE;
	310
	311	pp = parport_register_port((unsigned long)dd->base, irq,
	312	PARPORT_DMA_NONE,
	313	&parport_ax88796_ops);
	314
	315	if (pp == NULL) {
	316	dev_err(_dev, "failed to register parallel port\n");
	317	ret = -ENOMEM;
	318	goto exit_unmap;
	319	}
	320
	321	pp->private_data = dd;
	322	dd->parport = pp;
	323	dd->dev = _dev;
	324
	325	dd->spp_data = dd->base;
	326	dd->spp_spr = dd->base + (spacing * 1);
	327	dd->spp_cpr = dd->base + (spacing * 2);
	328
	329	/* initialise the port controls */
	330	writeb(AX_CPR_STRB, dd->spp_cpr);
	331
	332	if (irq >= 0) {
	333	/* request irq */
3f2e40df	334	ret = request_irq(irq, parport_irq_handler,
dace1453	335	IRQF_TRIGGER_FALLING, pdev->name, pp);
ad4063b0 BD	336
	337	if (ret < 0)
	338	goto exit_port;
	339
	340	dd->irq_enabled = 1;
	341	}
	342
	343	platform_set_drvdata(pdev, pp);
	344
	345	dev_info(_dev, "attached parallel port driver\n");
	346	parport_announce_port(pp);
	347
	348	return 0;
	349
	350	exit_port:
	351	parport_remove_port(pp);
	352	exit_unmap:
	353	iounmap(dd->base);
	354	exit_res:
ed779b27	355	release_mem_region(dd->io->start, size);
ad4063b0 BD	356	exit_mem:
	357	kfree(dd);
	358	return ret;
	359	}
	360
	361	static int parport_ax88796_remove(struct platform_device *pdev)
	362	{
	363	struct parport *p = platform_get_drvdata(pdev);
	364	struct ax_drvdata *dd = pp_to_drv(p);
	365
	366	free_irq(p->irq, p);
	367	parport_remove_port(p);
	368	iounmap(dd->base);
ed779b27	369	release_mem_region(dd->io->start, resource_size(dd->io));
ad4063b0 BD	370	kfree(dd);
	371
	372	return 0;
	373	}
	374
	375	#ifdef CONFIG_PM
	376
	377	static int parport_ax88796_suspend(struct platform_device *dev,
	378	pm_message_t state)
	379	{
	380	struct parport *p = platform_get_drvdata(dev);
	381	struct ax_drvdata *dd = pp_to_drv(p);
	382
	383	parport_ax88796_save_state(p, &dd->suspend);
	384	writeb(AX_CPR_nDOE \| AX_CPR_STRB, dd->spp_cpr);
	385	return 0;
	386	}
	387
	388	static int parport_ax88796_resume(struct platform_device *dev)
	389	{
	390	struct parport *p = platform_get_drvdata(dev);
	391	struct ax_drvdata *dd = pp_to_drv(p);
	392
	393	parport_ax88796_restore_state(p, &dd->suspend);
	394	return 0;
	395	}
	396
	397	#else
	398	#define parport_ax88796_suspend NULL
	399	#define parport_ax88796_resume NULL
	400	#endif
	401
db358b40 KS	402	MODULE_ALIAS("platform:ax88796-pp");
db358b40 KS	403
ad4063b0 BD	404	static struct platform_driver axdrv = {
	405	.driver = {
	406	.name = "ax88796-pp",
ad4063b0 BD	407	},
	408	.probe = parport_ax88796_probe,
	409	.remove = parport_ax88796_remove,
	410	.suspend = parport_ax88796_suspend,
	411	.resume = parport_ax88796_resume,
	412	};
	413
782ee877	414	module_platform_driver(axdrv);
ad4063b0 BD	415
	416	MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
	417	MODULE_DESCRIPTION("AX88796 Parport parallel port driver");
	418	MODULE_LICENSE("GPL");