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)

  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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 85static unsigned char status_sunbpp_to_pc(struct parport *p)
 86{
 87	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
 88	unsigned char bits = 0;
 89	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
 90	unsigned char value_ir = sbus_readb(&regs->p_ir);
 91
 92	if (!(value_ir & P_IR_ERR))
 93		bits |= PARPORT_STATUS_ERROR;
 94	if (!(value_ir & P_IR_SLCT))
 95		bits |= PARPORT_STATUS_SELECT;
 96	if (!(value_ir & P_IR_PE))
 97		bits |= PARPORT_STATUS_PAPEROUT;
 98	if (value_tcr & P_TCR_ACK)
 99		bits |= PARPORT_STATUS_ACK;
100	if (!(value_tcr & P_TCR_BUSY))
101		bits |= PARPORT_STATUS_BUSY;
102
103	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
104	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
105	return bits;
106}
107
108static unsigned char control_sunbpp_to_pc(struct parport *p)
109{
110	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
111	unsigned char bits = 0;
112	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
113	unsigned char value_or = sbus_readb(&regs->p_or);
114
115	if (!(value_tcr & P_TCR_DS))
116		bits |= PARPORT_CONTROL_STROBE;
117	if (!(value_or & P_OR_AFXN))
118		bits |= PARPORT_CONTROL_AUTOFD;
119	if (!(value_or & P_OR_INIT))
120		bits |= PARPORT_CONTROL_INIT;
121	if (value_or & P_OR_SLCT_IN)
122		bits |= PARPORT_CONTROL_SELECT;
123
124	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
125	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
126	return bits;
127}
128
129static unsigned char parport_sunbpp_read_control(struct parport *p)
130{
131	return control_sunbpp_to_pc(p);
132}
133
134static unsigned char parport_sunbpp_frob_control(struct parport *p,
135						 unsigned char mask,
136						 unsigned char val)
137{
138	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
139	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
140	unsigned char value_or = sbus_readb(&regs->p_or);
141
142	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
143		 value_tcr, value_or));
144	if (mask & PARPORT_CONTROL_STROBE) {
145		if (val & PARPORT_CONTROL_STROBE) {
146			value_tcr &= ~P_TCR_DS;
147		} else {
148			value_tcr |= P_TCR_DS;
149		}
150	}
151	if (mask & PARPORT_CONTROL_AUTOFD) {
152		if (val & PARPORT_CONTROL_AUTOFD) {
153			value_or &= ~P_OR_AFXN;
154		} else {
155			value_or |= P_OR_AFXN;
156		}
157	}
158	if (mask & PARPORT_CONTROL_INIT) {
159		if (val & PARPORT_CONTROL_INIT) {
160			value_or &= ~P_OR_INIT;
161		} else {
162			value_or |= P_OR_INIT;
163		}
164	}
165	if (mask & PARPORT_CONTROL_SELECT) {
166		if (val & PARPORT_CONTROL_SELECT) {
167			value_or |= P_OR_SLCT_IN;
168		} else {
169			value_or &= ~P_OR_SLCT_IN;
170		}
171	}
172
173	sbus_writeb(value_or, &regs->p_or);
174	sbus_writeb(value_tcr, &regs->p_tcr);
175	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
176		 value_tcr, value_or));
177	return parport_sunbpp_read_control(p);
178}
179
180static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
181{
182	const unsigned char wm = (PARPORT_CONTROL_STROBE |
183				  PARPORT_CONTROL_AUTOFD |
184				  PARPORT_CONTROL_INIT |
185				  PARPORT_CONTROL_SELECT);
186
187	parport_sunbpp_frob_control (p, wm, d & wm);
188}
189
190static unsigned char parport_sunbpp_read_status(struct parport *p)
191{
192	return status_sunbpp_to_pc(p);
193}
194
195static void parport_sunbpp_data_forward (struct parport *p)
196{
197	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
198	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
199
200	dprintk((KERN_DEBUG "forward\n"));
201	value_tcr &= ~P_TCR_DIR;
202	sbus_writeb(value_tcr, &regs->p_tcr);
203}
204
205static void parport_sunbpp_data_reverse (struct parport *p)
206{
207	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
208	u8 val = sbus_readb(&regs->p_tcr);
209
210	dprintk((KERN_DEBUG "reverse\n"));
211	val |= P_TCR_DIR;
212	sbus_writeb(val, &regs->p_tcr);
213}
214
215static void parport_sunbpp_init_state(struct pardevice *dev, struct parport_state *s)
216{
217	s->u.pc.ctr = 0xc;
218	s->u.pc.ecr = 0x0;
219}
220
221static void parport_sunbpp_save_state(struct parport *p, struct parport_state *s)
222{
223	s->u.pc.ctr = parport_sunbpp_read_control(p);
224}
225
226static void parport_sunbpp_restore_state(struct parport *p, struct parport_state *s)
227{
228	parport_sunbpp_write_control(p, s->u.pc.ctr);
229}
230
231static struct parport_operations parport_sunbpp_ops = 
232{
233	.write_data	= parport_sunbpp_write_data,
234	.read_data	= parport_sunbpp_read_data,
235
236	.write_control	= parport_sunbpp_write_control,
237	.read_control	= parport_sunbpp_read_control,
238	.frob_control	= parport_sunbpp_frob_control,
239
240	.read_status	= parport_sunbpp_read_status,
241
242	.enable_irq	= parport_sunbpp_enable_irq,
243	.disable_irq	= parport_sunbpp_disable_irq,
244
245	.data_forward	= parport_sunbpp_data_forward,
246	.data_reverse	= parport_sunbpp_data_reverse,
247
248	.init_state	= parport_sunbpp_init_state,
249	.save_state	= parport_sunbpp_save_state,
250	.restore_state	= parport_sunbpp_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
268static int bpp_probe(struct platform_device *op)
269{
270	struct parport_operations *ops;
271	struct bpp_regs __iomem *regs;
272	int irq, dma, err = 0, size;
273	unsigned char value_tcr;
274	void __iomem *base;
275	struct parport *p;
276
277	irq = op->archdata.irqs[0];
278	base = of_ioremap(&op->resource[0], 0,
279			  resource_size(&op->resource[0]),
280			  "sunbpp");
281	if (!base)
282		return -ENODEV;
283
284	size = resource_size(&op->resource[0]);
285	dma = PARPORT_DMA_NONE;
286
287	ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations),
288		      GFP_KERNEL);
289        if (!ops)
290		goto out_unmap;
291
 
 
292	dprintk(("register_port\n"));
293	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
294		goto out_free_ops;
295
296	p->size = size;
297	p->dev = &op->dev;
298
299	if ((err = request_irq(p->irq, parport_irq_handler,
300			       IRQF_SHARED, p->name, p)) != 0) {
301		goto out_put_port;
302	}
303
304	parport_sunbpp_enable_irq(p);
305
306	regs = (struct bpp_regs __iomem *)p->base;
307
308	value_tcr = sbus_readb(&regs->p_tcr);
309	value_tcr &= ~P_TCR_DIR;
310	sbus_writeb(value_tcr, &regs->p_tcr);
311
312	printk(KERN_INFO "%s: sunbpp at 0x%lx\n", p->name, p->base);
313
314	dev_set_drvdata(&op->dev, p);
315
316	parport_announce_port(p);
317
318	return 0;
319
320out_put_port:
321	parport_put_port(p);
322
323out_free_ops:
324	kfree(ops);
325
326out_unmap:
327	of_iounmap(&op->resource[0], base, size);
328
329	return err;
330}
331
332static int bpp_remove(struct platform_device *op)
333{
334	struct parport *p = dev_get_drvdata(&op->dev);
335	struct parport_operations *ops = p->ops;
336
337	parport_remove_port(p);
338
339	if (p->irq != PARPORT_IRQ_NONE) {
340		parport_sunbpp_disable_irq(p);
341		free_irq(p->irq, p);
342	}
343
344	of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
345	parport_put_port(p);
346	kfree(ops);
347
348	dev_set_drvdata(&op->dev, NULL);
349
350	return 0;
351}
352
353static const struct of_device_id bpp_match[] = {
354	{
355		.name = "SUNW,bpp",
356	},
357	{},
358};
359
360MODULE_DEVICE_TABLE(of, bpp_match);
361
362static struct platform_driver bpp_sbus_driver = {
363	.driver = {
364		.name = "bpp",
365		.owner = THIS_MODULE,
366		.of_match_table = bpp_match,
367	},
368	.probe		= bpp_probe,
369	.remove		= bpp_remove,
370};
371
372module_platform_driver(bpp_sbus_driver);
 
 
 
 
 
 
 
 
373
374MODULE_AUTHOR("Derrick J Brashear");
375MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
376MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
377MODULE_VERSION("2.0");
378MODULE_LICENSE("GPL");