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v5.9
  1// SPDX-License-Identifier: GPL-2.0-only
  2/* parport_sunbpp.c: Parallel-port routines for SBUS
  3 * 
  4 * Author: Derrick J. Brashear <shadow@dementia.org>
  5 *
  6 * based on work by:
  7 *          Phil Blundell <philb@gnu.org>
  8 *          Tim Waugh <tim@cyberelk.demon.co.uk>
  9 *	    Jose Renau <renau@acm.org>
 10 *          David Campbell <campbell@tirian.che.curtin.edu.au>
 11 *          Grant Guenther <grant@torque.net>
 12 *          Eddie C. Dost <ecd@skynet.be>
 13 *          Stephen Williams (steve@icarus.com)
 14 *          Gus Baldauf (gbaldauf@ix.netcom.com)
 15 *          Peter Zaitcev
 16 *          Tom Dyas
 17 *
 18 * Updated to new SBUS device framework: David S. Miller <davem@davemloft.net>
 19 * 
 20 */
 21
 22#include <linux/string.h>
 23#include <linux/module.h>
 24#include <linux/delay.h>
 25#include <linux/errno.h>
 26#include <linux/ioport.h>
 27#include <linux/kernel.h>
 28#include <linux/slab.h>
 29#include <linux/init.h>
 30#include <linux/of.h>
 31#include <linux/of_device.h>
 32
 33#include <linux/parport.h>
 34
 35#include <asm/ptrace.h>
 36#include <linux/interrupt.h>
 37
 38#include <asm/io.h>
 39#include <asm/oplib.h>           /* OpenProm Library */
 40#include <asm/dma.h>             /* BPP uses LSI 64854 for DMA */
 41#include <asm/irq.h>
 42#include <asm/sunbpp.h>
 43
 44#undef __SUNBPP_DEBUG
 45#ifdef __SUNBPP_DEBUG
 46#define dprintk(x) printk x
 47#else
 48#define dprintk(x)
 49#endif
 50
 51static void parport_sunbpp_disable_irq(struct parport *p)
 52{
 53	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
 54	u32 tmp;
 55
 56	tmp = sbus_readl(&regs->p_csr);
 57	tmp &= ~DMA_INT_ENAB;
 58	sbus_writel(tmp, &regs->p_csr);
 59}
 60
 61static void parport_sunbpp_enable_irq(struct parport *p)
 62{
 63	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
 64	u32 tmp;
 65
 66	tmp = sbus_readl(&regs->p_csr);
 67	tmp |= DMA_INT_ENAB;
 68	sbus_writel(tmp, &regs->p_csr);
 69}
 70
 71static void parport_sunbpp_write_data(struct parport *p, unsigned char d)
 72{
 73	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
 74
 75	sbus_writeb(d, &regs->p_dr);
 76	dprintk((KERN_DEBUG "wrote 0x%x\n", d));
 77}
 78
 79static unsigned char parport_sunbpp_read_data(struct parport *p)
 80{
 81	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
 82
 83	return sbus_readb(&regs->p_dr);
 84}
 85
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 86static unsigned char status_sunbpp_to_pc(struct parport *p)
 87{
 88	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
 89	unsigned char bits = 0;
 90	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
 91	unsigned char value_ir = sbus_readb(&regs->p_ir);
 92
 93	if (!(value_ir & P_IR_ERR))
 94		bits |= PARPORT_STATUS_ERROR;
 95	if (!(value_ir & P_IR_SLCT))
 96		bits |= PARPORT_STATUS_SELECT;
 97	if (!(value_ir & P_IR_PE))
 98		bits |= PARPORT_STATUS_PAPEROUT;
 99	if (value_tcr & P_TCR_ACK)
100		bits |= PARPORT_STATUS_ACK;
101	if (!(value_tcr & P_TCR_BUSY))
102		bits |= PARPORT_STATUS_BUSY;
103
104	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
105	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
106	return bits;
107}
108
109static unsigned char control_sunbpp_to_pc(struct parport *p)
110{
111	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
112	unsigned char bits = 0;
113	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
114	unsigned char value_or = sbus_readb(&regs->p_or);
115
116	if (!(value_tcr & P_TCR_DS))
117		bits |= PARPORT_CONTROL_STROBE;
118	if (!(value_or & P_OR_AFXN))
119		bits |= PARPORT_CONTROL_AUTOFD;
120	if (!(value_or & P_OR_INIT))
121		bits |= PARPORT_CONTROL_INIT;
122	if (value_or & P_OR_SLCT_IN)
123		bits |= PARPORT_CONTROL_SELECT;
124
125	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
126	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
127	return bits;
128}
129
130static unsigned char parport_sunbpp_read_control(struct parport *p)
131{
132	return control_sunbpp_to_pc(p);
133}
134
135static unsigned char parport_sunbpp_frob_control(struct parport *p,
136						 unsigned char mask,
137						 unsigned char val)
138{
139	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
140	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
141	unsigned char value_or = sbus_readb(&regs->p_or);
142
143	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
144		 value_tcr, value_or));
145	if (mask & PARPORT_CONTROL_STROBE) {
146		if (val & PARPORT_CONTROL_STROBE) {
147			value_tcr &= ~P_TCR_DS;
148		} else {
149			value_tcr |= P_TCR_DS;
150		}
151	}
152	if (mask & PARPORT_CONTROL_AUTOFD) {
153		if (val & PARPORT_CONTROL_AUTOFD) {
154			value_or &= ~P_OR_AFXN;
155		} else {
156			value_or |= P_OR_AFXN;
157		}
158	}
159	if (mask & PARPORT_CONTROL_INIT) {
160		if (val & PARPORT_CONTROL_INIT) {
161			value_or &= ~P_OR_INIT;
162		} else {
163			value_or |= P_OR_INIT;
164		}
165	}
166	if (mask & PARPORT_CONTROL_SELECT) {
167		if (val & PARPORT_CONTROL_SELECT) {
168			value_or |= P_OR_SLCT_IN;
169		} else {
170			value_or &= ~P_OR_SLCT_IN;
171		}
172	}
173
174	sbus_writeb(value_or, &regs->p_or);
175	sbus_writeb(value_tcr, &regs->p_tcr);
176	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
177		 value_tcr, value_or));
178	return parport_sunbpp_read_control(p);
179}
180
181static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
182{
183	const unsigned char wm = (PARPORT_CONTROL_STROBE |
184				  PARPORT_CONTROL_AUTOFD |
185				  PARPORT_CONTROL_INIT |
186				  PARPORT_CONTROL_SELECT);
187
188	parport_sunbpp_frob_control (p, wm, d & wm);
189}
190
191static unsigned char parport_sunbpp_read_status(struct parport *p)
192{
193	return status_sunbpp_to_pc(p);
194}
195
196static void parport_sunbpp_data_forward (struct parport *p)
197{
198	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
199	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
200
201	dprintk((KERN_DEBUG "forward\n"));
202	value_tcr &= ~P_TCR_DIR;
203	sbus_writeb(value_tcr, &regs->p_tcr);
204}
205
206static void parport_sunbpp_data_reverse (struct parport *p)
207{
208	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
209	u8 val = sbus_readb(&regs->p_tcr);
210
211	dprintk((KERN_DEBUG "reverse\n"));
212	val |= P_TCR_DIR;
213	sbus_writeb(val, &regs->p_tcr);
214}
215
216static void parport_sunbpp_init_state(struct pardevice *dev, struct parport_state *s)
217{
218	s->u.pc.ctr = 0xc;
219	s->u.pc.ecr = 0x0;
220}
221
222static void parport_sunbpp_save_state(struct parport *p, struct parport_state *s)
223{
224	s->u.pc.ctr = parport_sunbpp_read_control(p);
225}
226
227static void parport_sunbpp_restore_state(struct parport *p, struct parport_state *s)
228{
229	parport_sunbpp_write_control(p, s->u.pc.ctr);
230}
231
232static struct parport_operations parport_sunbpp_ops = 
233{
234	.write_data	= parport_sunbpp_write_data,
235	.read_data	= parport_sunbpp_read_data,
236
237	.write_control	= parport_sunbpp_write_control,
238	.read_control	= parport_sunbpp_read_control,
239	.frob_control	= parport_sunbpp_frob_control,
240
241	.read_status	= parport_sunbpp_read_status,
242
243	.enable_irq	= parport_sunbpp_enable_irq,
244	.disable_irq	= parport_sunbpp_disable_irq,
245
246	.data_forward	= parport_sunbpp_data_forward,
247	.data_reverse	= parport_sunbpp_data_reverse,
248
249	.init_state	= parport_sunbpp_init_state,
250	.save_state	= parport_sunbpp_save_state,
251	.restore_state	= parport_sunbpp_restore_state,
252
253	.epp_write_data	= parport_ieee1284_epp_write_data,
254	.epp_read_data	= parport_ieee1284_epp_read_data,
255	.epp_write_addr	= parport_ieee1284_epp_write_addr,
256	.epp_read_addr	= parport_ieee1284_epp_read_addr,
257
258	.ecp_write_data	= parport_ieee1284_ecp_write_data,
259	.ecp_read_data	= parport_ieee1284_ecp_read_data,
260	.ecp_write_addr	= parport_ieee1284_ecp_write_addr,
261
262	.compat_write_data	= parport_ieee1284_write_compat,
263	.nibble_read_data	= parport_ieee1284_read_nibble,
264	.byte_read_data		= parport_ieee1284_read_byte,
265
266	.owner		= THIS_MODULE,
267};
268
269static int bpp_probe(struct platform_device *op)
270{
271	struct parport_operations *ops;
272	struct bpp_regs __iomem *regs;
273	int irq, dma, err = 0, size;
274	unsigned char value_tcr;
275	void __iomem *base;
276	struct parport *p;
277
278	irq = op->archdata.irqs[0];
279	base = of_ioremap(&op->resource[0], 0,
280			  resource_size(&op->resource[0]),
281			  "sunbpp");
282	if (!base)
283		return -ENODEV;
284
285	size = resource_size(&op->resource[0]);
286	dma = PARPORT_DMA_NONE;
287
288	ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations),
289		      GFP_KERNEL);
290	if (!ops) {
291		err = -ENOMEM;
292		goto out_unmap;
293	}
 
294
295	dprintk(("register_port\n"));
296	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops))) {
297		err = -ENOMEM;
298		goto out_free_ops;
299	}
300
301	p->size = size;
302	p->dev = &op->dev;
303
304	if ((err = request_irq(p->irq, parport_irq_handler,
305			       IRQF_SHARED, p->name, p)) != 0) {
306		goto out_put_port;
307	}
308
309	parport_sunbpp_enable_irq(p);
310
311	regs = (struct bpp_regs __iomem *)p->base;
312
313	value_tcr = sbus_readb(&regs->p_tcr);
314	value_tcr &= ~P_TCR_DIR;
315	sbus_writeb(value_tcr, &regs->p_tcr);
316
317	pr_info("%s: sunbpp at 0x%lx\n", p->name, p->base);
318
319	dev_set_drvdata(&op->dev, p);
320
321	parport_announce_port(p);
322
323	return 0;
324
325out_put_port:
326	parport_put_port(p);
327
328out_free_ops:
329	kfree(ops);
330
331out_unmap:
332	of_iounmap(&op->resource[0], base, size);
333
334	return err;
335}
336
337static int bpp_remove(struct platform_device *op)
338{
339	struct parport *p = dev_get_drvdata(&op->dev);
340	struct parport_operations *ops = p->ops;
341
342	parport_remove_port(p);
343
344	if (p->irq != PARPORT_IRQ_NONE) {
345		parport_sunbpp_disable_irq(p);
346		free_irq(p->irq, p);
347	}
348
349	of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
350	parport_put_port(p);
351	kfree(ops);
352
353	dev_set_drvdata(&op->dev, NULL);
354
355	return 0;
356}
357
358static const struct of_device_id bpp_match[] = {
359	{
360		.name = "SUNW,bpp",
361	},
362	{},
363};
364
365MODULE_DEVICE_TABLE(of, bpp_match);
366
367static struct platform_driver bpp_sbus_driver = {
368	.driver = {
369		.name = "bpp",
 
370		.of_match_table = bpp_match,
371	},
372	.probe		= bpp_probe,
373	.remove		= bpp_remove,
374};
375
376module_platform_driver(bpp_sbus_driver);
 
 
 
 
 
 
 
 
377
378MODULE_AUTHOR("Derrick J Brashear");
379MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
380MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
381MODULE_VERSION("2.0");
382MODULE_LICENSE("GPL");
v3.1
 
  1/* parport_sunbpp.c: Parallel-port routines for SBUS
  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
 16 *
 17 * Updated to new SBUS device framework: David S. Miller <davem@davemloft.net>
 18 * 
 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>
 29#include <linux/of.h>
 30#include <linux/of_device.h>
 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 */
 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
 50static 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
 60static 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
 70static 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
 78static 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
 86static 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
106static 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
124	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
125	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
126	return bits;
127}
128
129static 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
145	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
146	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
147	return bits;
148}
149
150static unsigned char parport_sunbpp_read_control(struct parport *p)
151{
152	return control_sunbpp_to_pc(p);
153}
154
155static 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
163	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
164		 value_tcr, value_or));
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);
196	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
197		 value_tcr, value_or));
198	return parport_sunbpp_read_control(p);
199}
200
201static 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
211static unsigned char parport_sunbpp_read_status(struct parport *p)
212{
213	return status_sunbpp_to_pc(p);
214}
215
216static 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
226static 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
236static 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
242static 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
247static 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
252static 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
289static int __devinit bpp_probe(struct platform_device *op)
290{
291	struct parport_operations *ops;
292	struct bpp_regs __iomem *regs;
293	int irq, dma, err = 0, size;
294	unsigned char value_tcr;
295	void __iomem *base;
296	struct parport *p;
297
298	irq = op->archdata.irqs[0];
299	base = of_ioremap(&op->resource[0], 0,
300			  resource_size(&op->resource[0]),
301			  "sunbpp");
302	if (!base)
303		return -ENODEV;
304
305	size = resource_size(&op->resource[0]);
306	dma = PARPORT_DMA_NONE;
307
308	ops = kmalloc(sizeof(struct parport_operations), GFP_KERNEL);
309        if (!ops)
 
 
310		goto out_unmap;
311
312        memcpy (ops, &parport_sunbpp_ops, sizeof(struct parport_operations));
313
314	dprintk(("register_port\n"));
315	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
 
316		goto out_free_ops;
 
317
318	p->size = size;
319	p->dev = &op->dev;
320
321	if ((err = request_irq(p->irq, parport_irq_handler,
322			       IRQF_SHARED, p->name, p)) != 0) {
323		goto out_put_port;
324	}
325
326	parport_sunbpp_enable_irq(p);
327
328	regs = (struct bpp_regs __iomem *)p->base;
329
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);
335
336	dev_set_drvdata(&op->dev, p);
337
338	parport_announce_port(p);
339
340	return 0;
341
342out_put_port:
343	parport_put_port(p);
344
345out_free_ops:
346	kfree(ops);
347
348out_unmap:
349	of_iounmap(&op->resource[0], base, size);
350
351	return err;
352}
353
354static int __devexit bpp_remove(struct platform_device *op)
355{
356	struct parport *p = dev_get_drvdata(&op->dev);
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);
364	}
365
366	of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
367	parport_put_port(p);
368	kfree(ops);
369
370	dev_set_drvdata(&op->dev, NULL);
371
372	return 0;
373}
374
375static const struct of_device_id bpp_match[] = {
376	{
377		.name = "SUNW,bpp",
378	},
379	{},
380};
381
382MODULE_DEVICE_TABLE(of, bpp_match);
383
384static struct platform_driver bpp_sbus_driver = {
385	.driver = {
386		.name = "bpp",
387		.owner = THIS_MODULE,
388		.of_match_table = bpp_match,
389	},
390	.probe		= bpp_probe,
391	.remove		= __devexit_p(bpp_remove),
392};
393
394static int __init parport_sunbpp_init(void)
395{
396	return platform_driver_register(&bpp_sbus_driver);
397}
398
399static void __exit parport_sunbpp_exit(void)
400{
401	platform_driver_unregister(&bpp_sbus_driver);
402}
403
404MODULE_AUTHOR("Derrick J Brashear");
405MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
406MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
407MODULE_VERSION("2.0");
408MODULE_LICENSE("GPL");
409
410module_init(parport_sunbpp_init)
411module_exit(parport_sunbpp_exit)