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gpiolib: annotate gpio-intialization with __must_check
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / pcmcia / tcic.c
blob310160bffe382c46ac6cda7a3c848bbcb2646d0a
1 /*======================================================================
2
3 Device driver for Databook TCIC-2 PCMCIA controller
4
5 tcic.c 1.111 2000/02/15 04:13:12
6
7 The contents of this file are subject to the Mozilla Public
8 License Version 1.1 (the "License"); you may not use this file
9 except in compliance with the License. You may obtain a copy of
10 the License at http://www.mozilla.org/MPL/
11
12 Software distributed under the License is distributed on an "AS
13 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 implied. See the License for the specific language governing
15 rights and limitations under the License.
16
17 The initial developer of the original code is David A. Hinds
18 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
19 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
20
21 Alternatively, the contents of this file may be used under the
22 terms of the GNU General Public License version 2 (the "GPL"), in which
23 case the provisions of the GPL are applicable instead of the
24 above. If you wish to allow the use of your version of this file
25 only under the terms of the GPL and not to allow others to use
26 your version of this file under the MPL, indicate your decision
27 by deleting the provisions above and replace them with the notice
28 and other provisions required by the GPL. If you do not delete
29 the provisions above, a recipient may use your version of this
30 file under either the MPL or the GPL.
31
32 ======================================================================*/
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/init.h>
37 #include <linux/types.h>
38 #include <linux/fcntl.h>
39 #include <linux/string.h>
40 #include <linux/errno.h>
41 #include <linux/interrupt.h>
42 #include <linux/timer.h>
43 #include <linux/ioport.h>
44 #include <linux/delay.h>
45 #include <linux/workqueue.h>
46 #include <linux/platform_device.h>
47 #include <linux/bitops.h>
48
49 #include <asm/io.h>
50 #include <asm/system.h>
51
52 #include <pcmcia/ss.h>
53 #include "tcic.h"
54
55 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
56 MODULE_DESCRIPTION("Databook TCIC-2 PCMCIA socket driver");
57 MODULE_LICENSE("Dual MPL/GPL");
58
59 /*====================================================================*/
60
61 /* Parameters that can be set with 'insmod' */
62
63 /* The base port address of the TCIC-2 chip */
64 static unsigned long tcic_base = TCIC_BASE;
65
66 /* Specify a socket number to ignore */
67 static int ignore = -1;
68
69 /* Probe for safe interrupts? */
70 static int do_scan = 1;
71
72 /* Bit map of interrupts to choose from */
73 static u_int irq_mask = 0xffff;
74 static int irq_list[16];
75 static unsigned int irq_list_count;
76
77 /* The card status change interrupt -- 0 means autoselect */
78 static int cs_irq;
79
80 /* Poll status interval -- 0 means default to interrupt */
81 static int poll_interval;
82
83 /* Delay for card status double-checking */
84 static int poll_quick = HZ/20;
85
86 /* CCLK external clock time, in nanoseconds. 70 ns = 14.31818 MHz */
87 static int cycle_time = 70;
88
89 module_param(tcic_base, ulong, 0444);
90 module_param(ignore, int, 0444);
91 module_param(do_scan, int, 0444);
92 module_param(irq_mask, int, 0444);
93 module_param_array(irq_list, int, &irq_list_count, 0444);
94 module_param(cs_irq, int, 0444);
95 module_param(poll_interval, int, 0444);
96 module_param(poll_quick, int, 0444);
97 module_param(cycle_time, int, 0444);
98
99 /*====================================================================*/
100
101 static irqreturn_t tcic_interrupt(int irq, void *dev);
102 static void tcic_timer(u_long data);
103 static struct pccard_operations tcic_operations;
104
105 struct tcic_socket {
106 u_short psock;
107 u_char last_sstat;
108 u_char id;
109 struct pcmcia_socket socket;
110 };
111
112 static struct timer_list poll_timer;
113 static int tcic_timer_pending;
114
115 static int sockets;
116 static struct tcic_socket socket_table[2];
117
118 /*====================================================================*/
119
120 /* Trick when selecting interrupts: the TCIC sktirq pin is supposed
121 to map to irq 11, but is coded as 0 or 1 in the irq registers. */
122 #define TCIC_IRQ(x) ((x) ? (((x) == 11) ? 1 : (x)) : 15)
123
124 #ifdef DEBUG_X
125 static u_char tcic_getb(u_char reg)
126 {
127 u_char val = inb(tcic_base+reg);
128 printk(KERN_DEBUG "tcic_getb(%#lx) = %#x\n", tcic_base+reg, val);
129 return val;
130 }
131
132 static u_short tcic_getw(u_char reg)
133 {
134 u_short val = inw(tcic_base+reg);
135 printk(KERN_DEBUG "tcic_getw(%#lx) = %#x\n", tcic_base+reg, val);
136 return val;
137 }
138
139 static void tcic_setb(u_char reg, u_char data)
140 {
141 printk(KERN_DEBUG "tcic_setb(%#lx, %#x)\n", tcic_base+reg, data);
142 outb(data, tcic_base+reg);
143 }
144
145 static void tcic_setw(u_char reg, u_short data)
146 {
147 printk(KERN_DEBUG "tcic_setw(%#lx, %#x)\n", tcic_base+reg, data);
148 outw(data, tcic_base+reg);
149 }
150 #else
151 #define tcic_getb(reg) inb(tcic_base+reg)
152 #define tcic_getw(reg) inw(tcic_base+reg)
153 #define tcic_setb(reg, data) outb(data, tcic_base+reg)
154 #define tcic_setw(reg, data) outw(data, tcic_base+reg)
155 #endif
156
157 static void tcic_setl(u_char reg, u_int data)
158 {
159 #ifdef DEBUG_X
160 printk(KERN_DEBUG "tcic_setl(%#x, %#lx)\n", tcic_base+reg, data);
161 #endif
162 outw(data & 0xffff, tcic_base+reg);
163 outw(data >> 16, tcic_base+reg+2);
164 }
165
166 static void tcic_aux_setb(u_short reg, u_char data)
167 {
168 u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
169 tcic_setb(TCIC_MODE, mode);
170 tcic_setb(TCIC_AUX, data);
171 }
172
173 static u_short tcic_aux_getw(u_short reg)
174 {
175 u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
176 tcic_setb(TCIC_MODE, mode);
177 return tcic_getw(TCIC_AUX);
178 }
179
180 static void tcic_aux_setw(u_short reg, u_short data)
181 {
182 u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
183 tcic_setb(TCIC_MODE, mode);
184 tcic_setw(TCIC_AUX, data);
185 }
186
187 /*====================================================================*/
188
189 /* Time conversion functions */
190
191 static int to_cycles(int ns)
192 {
193 if (ns < 14)
194 return 0;
195 else
196 return 2*(ns-14)/cycle_time;
197 }
198
199 /*====================================================================*/
200
201 static volatile u_int irq_hits;
202
203 static irqreturn_t __init tcic_irq_count(int irq, void *dev)
204 {
205 irq_hits++;
206 return IRQ_HANDLED;
207 }
208
209 static u_int __init try_irq(int irq)
210 {
211 u_short cfg;
212
213 irq_hits = 0;
214 if (request_irq(irq, tcic_irq_count, 0, "irq scan", tcic_irq_count) != 0)
215 return -1;
216 mdelay(10);
217 if (irq_hits) {
218 free_irq(irq, tcic_irq_count);
219 return -1;
220 }
221
222 /* Generate one interrupt */
223 cfg = TCIC_SYSCFG_AUTOBUSY | 0x0a00;
224 tcic_aux_setw(TCIC_AUX_SYSCFG, cfg | TCIC_IRQ(irq));
225 tcic_setb(TCIC_IENA, TCIC_IENA_ERR | TCIC_IENA_CFG_HIGH);
226 tcic_setb(TCIC_ICSR, TCIC_ICSR_ERR | TCIC_ICSR_JAM);
227
228 udelay(1000);
229 free_irq(irq, tcic_irq_count);
230
231 /* Turn off interrupts */
232 tcic_setb(TCIC_IENA, TCIC_IENA_CFG_OFF);
233 while (tcic_getb(TCIC_ICSR))
234 tcic_setb(TCIC_ICSR, TCIC_ICSR_JAM);
235 tcic_aux_setw(TCIC_AUX_SYSCFG, cfg);
236
237 return (irq_hits != 1);
238 }
239
240 static u_int __init irq_scan(u_int mask0)
241 {
242 u_int mask1;
243 int i;
244
245 #ifdef __alpha__
246 #define PIC 0x4d0
247 /* Don't probe level-triggered interrupts -- reserved for PCI */
248 int level_mask = inb_p(PIC) | (inb_p(PIC+1) << 8);
249 if (level_mask)
250 mask0 &= ~level_mask;
251 #endif
252
253 mask1 = 0;
254 if (do_scan) {
255 for (i = 0; i < 16; i++)
256 if ((mask0 & (1 << i)) && (try_irq(i) == 0))
257 mask1 |= (1 << i);
258 for (i = 0; i < 16; i++)
259 if ((mask1 & (1 << i)) && (try_irq(i) != 0)) {
260 mask1 ^= (1 << i);
261 }
262 }
263
264 if (mask1) {
265 printk("scanned");
266 } else {
267 /* Fallback: just find interrupts that aren't in use */
268 for (i = 0; i < 16; i++)
269 if ((mask0 & (1 << i)) &&
270 (request_irq(i, tcic_irq_count, 0, "x", tcic_irq_count) == 0)) {
271 mask1 |= (1 << i);
272 free_irq(i, tcic_irq_count);
273 }
274 printk("default");
275 }
276
277 printk(") = ");
278 for (i = 0; i < 16; i++)
279 if (mask1 & (1<<i))
280 printk("%s%d", ((mask1 & ((1<<i)-1)) ? "," : ""), i);
281 printk(" ");
282
283 return mask1;
284 }
285
286 /*======================================================================
287
288 See if a card is present, powered up, in IO mode, and already
289 bound to a (non-PCMCIA) Linux driver.
290
291 We make an exception for cards that look like serial devices.
292
293 ======================================================================*/
294
295 static int __init is_active(int s)
296 {
297 u_short scf1, ioctl, base, num;
298 u_char pwr, sstat;
299 u_int addr;
300
301 tcic_setl(TCIC_ADDR, (s << TCIC_ADDR_SS_SHFT)
302 | TCIC_ADDR_INDREG | TCIC_SCF1(s));
303 scf1 = tcic_getw(TCIC_DATA);
304 pwr = tcic_getb(TCIC_PWR);
305 sstat = tcic_getb(TCIC_SSTAT);
306 addr = TCIC_IWIN(s, 0);
307 tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X);
308 base = tcic_getw(TCIC_DATA);
309 tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X);
310 ioctl = tcic_getw(TCIC_DATA);
311
312 if (ioctl & TCIC_ICTL_TINY)
313 num = 1;
314 else {
315 num = (base ^ (base-1));
316 base = base & (base-1);
317 }
318
319 if ((sstat & TCIC_SSTAT_CD) && (pwr & TCIC_PWR_VCC(s)) &&
320 (scf1 & TCIC_SCF1_IOSTS) && (ioctl & TCIC_ICTL_ENA) &&
321 ((base & 0xfeef) != 0x02e8)) {
322 struct resource *res = request_region(base, num, "tcic-2");
323 if (!res) /* region is busy */
324 return 1;
325 release_region(base, num);
326 }
327
328 return 0;
329 }
330
331 /*======================================================================
332
333 This returns the revision code for the specified socket.
334
335 ======================================================================*/
336
337 static int __init get_tcic_id(void)
338 {
339 u_short id;
340
341 tcic_aux_setw(TCIC_AUX_TEST, TCIC_TEST_DIAG);
342 id = tcic_aux_getw(TCIC_AUX_ILOCK);
343 id = (id & TCIC_ILOCKTEST_ID_MASK) >> TCIC_ILOCKTEST_ID_SH;
344 tcic_aux_setw(TCIC_AUX_TEST, 0);
345 return id;
346 }
347
348 /*====================================================================*/
349
350 static struct platform_driver tcic_driver = {
351 .driver = {
352 .name = "tcic-pcmcia",
353 .owner = THIS_MODULE,
354 },
355 };
356
357 static struct platform_device tcic_device = {
358 .name = "tcic-pcmcia",
359 .id = 0,
360 };
361
362
363 static int __init init_tcic(void)
364 {
365 int i, sock, ret = 0;
366 u_int mask, scan;
367
368 if (platform_driver_register(&tcic_driver))
369 return -1;
370
371 printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: ");
372 sock = 0;
373
374 if (!request_region(tcic_base, 16, "tcic-2")) {
375 printk("could not allocate ports,\n ");
376 platform_driver_unregister(&tcic_driver);
377 return -ENODEV;
378 }
379 else {
380 tcic_setw(TCIC_ADDR, 0);
381 if (tcic_getw(TCIC_ADDR) == 0) {
382 tcic_setw(TCIC_ADDR, 0xc3a5);
383 if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2;
384 }
385 if (sock == 0) {
386 /* See if resetting the controller does any good */
387 tcic_setb(TCIC_SCTRL, TCIC_SCTRL_RESET);
388 tcic_setb(TCIC_SCTRL, 0);
389 tcic_setw(TCIC_ADDR, 0);
390 if (tcic_getw(TCIC_ADDR) == 0) {
391 tcic_setw(TCIC_ADDR, 0xc3a5);
392 if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2;
393 }
394 }
395 }
396 if (sock == 0) {
397 printk("not found.\n");
398 release_region(tcic_base, 16);
399 platform_driver_unregister(&tcic_driver);
400 return -ENODEV;
401 }
402
403 sockets = 0;
404 for (i = 0; i < sock; i++) {
405 if ((i == ignore) || is_active(i)) continue;
406 socket_table[sockets].psock = i;
407 socket_table[sockets].id = get_tcic_id();
408
409 socket_table[sockets].socket.owner = THIS_MODULE;
410 /* only 16-bit cards, memory windows must be size-aligned */
411 /* No PCI or CardBus support */
412 socket_table[sockets].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN;
413 /* irq 14, 11, 10, 7, 6, 5, 4, 3 */
414 socket_table[sockets].socket.irq_mask = 0x4cf8;
415 /* 4K minimum window size */
416 socket_table[sockets].socket.map_size = 0x1000;
417 sockets++;
418 }
419
420 switch (socket_table[0].id) {
421 case TCIC_ID_DB86082:
422 printk("DB86082"); break;
423 case TCIC_ID_DB86082A:
424 printk("DB86082A"); break;
425 case TCIC_ID_DB86084:
426 printk("DB86084"); break;
427 case TCIC_ID_DB86084A:
428 printk("DB86084A"); break;
429 case TCIC_ID_DB86072:
430 printk("DB86072"); break;
431 case TCIC_ID_DB86184:
432 printk("DB86184"); break;
433 case TCIC_ID_DB86082B:
434 printk("DB86082B"); break;
435 default:
436 printk("Unknown ID 0x%02x", socket_table[0].id);
437 }
438
439 /* Set up polling */
440 poll_timer.function = &tcic_timer;
441 poll_timer.data = 0;
442 init_timer(&poll_timer);
443
444 /* Build interrupt mask */
445 printk(KERN_CONT ", %d sockets\n", sockets);
446 printk(KERN_INFO " irq list (");
447 if (irq_list_count == 0)
448 mask = irq_mask;
449 else
450 for (i = mask = 0; i < irq_list_count; i++)
451 mask |= (1<<irq_list[i]);
452
453 /* irq 14, 11, 10, 7, 6, 5, 4, 3 */
454 mask &= 0x4cf8;
455 /* Scan interrupts */
456 mask = irq_scan(mask);
457 for (i=0;i<sockets;i++)
458 socket_table[i].socket.irq_mask = mask;
459
460 /* Check for only two interrupts available */
461 scan = (mask & (mask-1));
462 if (((scan & (scan-1)) == 0) && (poll_interval == 0))
463 poll_interval = HZ;
464
465 if (poll_interval == 0) {
466 /* Avoid irq 12 unless it is explicitly requested */
467 u_int cs_mask = mask & ((cs_irq) ? (1<<cs_irq) : ~(1<<12));
468 for (i = 15; i > 0; i--)
469 if ((cs_mask & (1 << i)) &&
470 (request_irq(i, tcic_interrupt, 0, "tcic",
471 tcic_interrupt) == 0))
472 break;
473 cs_irq = i;
474 if (cs_irq == 0) poll_interval = HZ;
475 }
476
477 if (socket_table[0].socket.irq_mask & (1 << 11))
478 printk("sktirq is irq 11, ");
479 if (cs_irq != 0)
480 printk("status change on irq %d\n", cs_irq);
481 else
482 printk("polled status, interval = %d ms\n",
483 poll_interval * 1000 / HZ);
484
485 for (i = 0; i < sockets; i++) {
486 tcic_setw(TCIC_ADDR+2, socket_table[i].psock << TCIC_SS_SHFT);
487 socket_table[i].last_sstat = tcic_getb(TCIC_SSTAT);
488 }
489
490 /* jump start interrupt handler, if needed */
491 tcic_interrupt(0, NULL);
492
493 platform_device_register(&tcic_device);
494
495 for (i = 0; i < sockets; i++) {
496 socket_table[i].socket.ops = &tcic_operations;
497 socket_table[i].socket.resource_ops = &pccard_nonstatic_ops;
498 socket_table[i].socket.dev.parent = &tcic_device.dev;
499 ret = pcmcia_register_socket(&socket_table[i].socket);
500 if (ret && i)
501 pcmcia_unregister_socket(&socket_table[0].socket);
502 }
503
504 return ret;
505
506 return 0;
507
508 } /* init_tcic */
509
510 /*====================================================================*/
511
512 static void __exit exit_tcic(void)
513 {
514 int i;
515
516 del_timer_sync(&poll_timer);
517 if (cs_irq != 0) {
518 tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00);
519 free_irq(cs_irq, tcic_interrupt);
520 }
521 release_region(tcic_base, 16);
522
523 for (i = 0; i < sockets; i++) {
524 pcmcia_unregister_socket(&socket_table[i].socket);
525 }
526
527 platform_device_unregister(&tcic_device);
528 platform_driver_unregister(&tcic_driver);
529 } /* exit_tcic */
530
531 /*====================================================================*/
532
533 static irqreturn_t tcic_interrupt(int irq, void *dev)
534 {
535 int i, quick = 0;
536 u_char latch, sstat;
537 u_short psock;
538 u_int events;
539 static volatile int active = 0;
540
541 if (active) {
542 printk(KERN_NOTICE "tcic: reentered interrupt handler!\n");
543 return IRQ_NONE;
544 } else
545 active = 1;
546
547 pr_debug("tcic_interrupt()\n");
548
549 for (i = 0; i < sockets; i++) {
550 psock = socket_table[i].psock;
551 tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
552 | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
553 sstat = tcic_getb(TCIC_SSTAT);
554 latch = sstat ^ socket_table[psock].last_sstat;
555 socket_table[i].last_sstat = sstat;
556 if (tcic_getb(TCIC_ICSR) & TCIC_ICSR_CDCHG) {
557 tcic_setb(TCIC_ICSR, TCIC_ICSR_CLEAR);
558 quick = 1;
559 }
560 if (latch == 0)
561 continue;
562 events = (latch & TCIC_SSTAT_CD) ? SS_DETECT : 0;
563 events |= (latch & TCIC_SSTAT_WP) ? SS_WRPROT : 0;
564 if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) {
565 events |= (latch & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0;
566 } else {
567 events |= (latch & TCIC_SSTAT_RDY) ? SS_READY : 0;
568 events |= (latch & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0;
569 events |= (latch & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0;
570 }
571 if (events) {
572 pcmcia_parse_events(&socket_table[i].socket, events);
573 }
574 }
575
576 /* Schedule next poll, if needed */
577 if (((cs_irq == 0) || quick) && (!tcic_timer_pending)) {
578 poll_timer.expires = jiffies + (quick ? poll_quick : poll_interval);
579 add_timer(&poll_timer);
580 tcic_timer_pending = 1;
581 }
582 active = 0;
583
584 pr_debug("interrupt done\n");
585 return IRQ_HANDLED;
586 } /* tcic_interrupt */
587
588 static void tcic_timer(u_long data)
589 {
590 pr_debug("tcic_timer()\n");
591 tcic_timer_pending = 0;
592 tcic_interrupt(0, NULL);
593 } /* tcic_timer */
594
595 /*====================================================================*/
596
597 static int tcic_get_status(struct pcmcia_socket *sock, u_int *value)
598 {
599 u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
600 u_char reg;
601
602 tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
603 | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
604 reg = tcic_getb(TCIC_SSTAT);
605 *value = (reg & TCIC_SSTAT_CD) ? SS_DETECT : 0;
606 *value |= (reg & TCIC_SSTAT_WP) ? SS_WRPROT : 0;
607 if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) {
608 *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0;
609 } else {
610 *value |= (reg & TCIC_SSTAT_RDY) ? SS_READY : 0;
611 *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0;
612 *value |= (reg & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0;
613 }
614 reg = tcic_getb(TCIC_PWR);
615 if (reg & (TCIC_PWR_VCC(psock)|TCIC_PWR_VPP(psock)))
616 *value |= SS_POWERON;
617 dev_dbg(&sock->dev, "GetStatus(%d) = %#2.2x\n", psock, *value);
618 return 0;
619 } /* tcic_get_status */
620
621 /*====================================================================*/
622
623 static int tcic_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
624 {
625 u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
626 u_char reg;
627 u_short scf1, scf2;
628
629 dev_dbg(&sock->dev, "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
630 "io_irq %d, csc_mask %#2.2x)\n", psock, state->flags,
631 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
632 tcic_setw(TCIC_ADDR+2, (psock << TCIC_SS_SHFT) | TCIC_ADR2_INDREG);
633
634 reg = tcic_getb(TCIC_PWR);
635 reg &= ~(TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock));
636
637 if (state->Vcc == 50) {
638 switch (state->Vpp) {
639 case 0: reg |= TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock); break;
640 case 50: reg |= TCIC_PWR_VCC(psock); break;
641 case 120: reg |= TCIC_PWR_VPP(psock); break;
642 default: return -EINVAL;
643 }
644 } else if (state->Vcc != 0)
645 return -EINVAL;
646
647 if (reg != tcic_getb(TCIC_PWR))
648 tcic_setb(TCIC_PWR, reg);
649
650 reg = TCIC_ILOCK_HOLD_CCLK | TCIC_ILOCK_CWAIT;
651 if (state->flags & SS_OUTPUT_ENA) {
652 tcic_setb(TCIC_SCTRL, TCIC_SCTRL_ENA);
653 reg |= TCIC_ILOCK_CRESENA;
654 } else
655 tcic_setb(TCIC_SCTRL, 0);
656 if (state->flags & SS_RESET)
657 reg |= TCIC_ILOCK_CRESET;
658 tcic_aux_setb(TCIC_AUX_ILOCK, reg);
659
660 tcic_setw(TCIC_ADDR, TCIC_SCF1(psock));
661 scf1 = TCIC_SCF1_FINPACK;
662 scf1 |= TCIC_IRQ(state->io_irq);
663 if (state->flags & SS_IOCARD) {
664 scf1 |= TCIC_SCF1_IOSTS;
665 if (state->flags & SS_SPKR_ENA)
666 scf1 |= TCIC_SCF1_SPKR;
667 if (state->flags & SS_DMA_MODE)
668 scf1 |= TCIC_SCF1_DREQ2 << TCIC_SCF1_DMA_SHIFT;
669 }
670 tcic_setw(TCIC_DATA, scf1);
671
672 /* Some general setup stuff, and configure status interrupt */
673 reg = TCIC_WAIT_ASYNC | TCIC_WAIT_SENSE | to_cycles(250);
674 tcic_aux_setb(TCIC_AUX_WCTL, reg);
675 tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00|
676 TCIC_IRQ(cs_irq));
677
678 /* Card status change interrupt mask */
679 tcic_setw(TCIC_ADDR, TCIC_SCF2(psock));
680 scf2 = TCIC_SCF2_MALL;
681 if (state->csc_mask & SS_DETECT) scf2 &= ~TCIC_SCF2_MCD;
682 if (state->flags & SS_IOCARD) {
683 if (state->csc_mask & SS_STSCHG) reg &= ~TCIC_SCF2_MLBAT1;
684 } else {
685 if (state->csc_mask & SS_BATDEAD) reg &= ~TCIC_SCF2_MLBAT1;
686 if (state->csc_mask & SS_BATWARN) reg &= ~TCIC_SCF2_MLBAT2;
687 if (state->csc_mask & SS_READY) reg &= ~TCIC_SCF2_MRDY;
688 }
689 tcic_setw(TCIC_DATA, scf2);
690 /* For the ISA bus, the irq should be active-high totem-pole */
691 tcic_setb(TCIC_IENA, TCIC_IENA_CDCHG | TCIC_IENA_CFG_HIGH);
692
693 return 0;
694 } /* tcic_set_socket */
695
696 /*====================================================================*/
697
698 static int tcic_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
699 {
700 u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
701 u_int addr;
702 u_short base, len, ioctl;
703
704 dev_dbg(&sock->dev, "SetIOMap(%d, %d, %#2.2x, %d ns, "
705 "%#llx-%#llx)\n", psock, io->map, io->flags, io->speed,
706 (unsigned long long)io->start, (unsigned long long)io->stop);
707 if ((io->map > 1) || (io->start > 0xffff) || (io->stop > 0xffff) ||
708 (io->stop < io->start)) return -EINVAL;
709 tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT));
710 addr = TCIC_IWIN(psock, io->map);
711
712 base = io->start; len = io->stop - io->start;
713 /* Check to see that len+1 is power of two, etc */
714 if ((len & (len+1)) || (base & len)) return -EINVAL;
715 base |= (len+1)>>1;
716 tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X);
717 tcic_setw(TCIC_DATA, base);
718
719 ioctl = (psock << TCIC_ICTL_SS_SHFT);
720 ioctl |= (len == 0) ? TCIC_ICTL_TINY : 0;
721 ioctl |= (io->flags & MAP_ACTIVE) ? TCIC_ICTL_ENA : 0;
722 ioctl |= to_cycles(io->speed) & TCIC_ICTL_WSCNT_MASK;
723 if (!(io->flags & MAP_AUTOSZ)) {
724 ioctl |= TCIC_ICTL_QUIET;
725 ioctl |= (io->flags & MAP_16BIT) ? TCIC_ICTL_BW_16 : TCIC_ICTL_BW_8;
726 }
727 tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X);
728 tcic_setw(TCIC_DATA, ioctl);
729
730 return 0;
731 } /* tcic_set_io_map */
732
733 /*====================================================================*/
734
735 static int tcic_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
736 {
737 u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
738 u_short addr, ctl;
739 u_long base, len, mmap;
740
741 dev_dbg(&sock->dev, "SetMemMap(%d, %d, %#2.2x, %d ns, "
742 "%#llx-%#llx, %#x)\n", psock, mem->map, mem->flags,
743 mem->speed, (unsigned long long)mem->res->start,
744 (unsigned long long)mem->res->end, mem->card_start);
745 if ((mem->map > 3) || (mem->card_start > 0x3ffffff) ||
746 (mem->res->start > 0xffffff) || (mem->res->end > 0xffffff) ||
747 (mem->res->start > mem->res->end) || (mem->speed > 1000))
748 return -EINVAL;
749 tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT));
750 addr = TCIC_MWIN(psock, mem->map);
751
752 base = mem->res->start; len = mem->res->end - mem->res->start;
753 if ((len & (len+1)) || (base & len)) return -EINVAL;
754 if (len == 0x0fff)
755 base = (base >> TCIC_MBASE_HA_SHFT) | TCIC_MBASE_4K_BIT;
756 else
757 base = (base | (len+1)>>1) >> TCIC_MBASE_HA_SHFT;
758 tcic_setw(TCIC_ADDR, addr + TCIC_MBASE_X);
759 tcic_setw(TCIC_DATA, base);
760
761 mmap = mem->card_start - mem->res->start;
762 mmap = (mmap >> TCIC_MMAP_CA_SHFT) & TCIC_MMAP_CA_MASK;
763 if (mem->flags & MAP_ATTRIB) mmap |= TCIC_MMAP_REG;
764 tcic_setw(TCIC_ADDR, addr + TCIC_MMAP_X);
765 tcic_setw(TCIC_DATA, mmap);
766
767 ctl = TCIC_MCTL_QUIET | (psock << TCIC_MCTL_SS_SHFT);
768 ctl |= to_cycles(mem->speed) & TCIC_MCTL_WSCNT_MASK;
769 ctl |= (mem->flags & MAP_16BIT) ? 0 : TCIC_MCTL_B8;
770 ctl |= (mem->flags & MAP_WRPROT) ? TCIC_MCTL_WP : 0;
771 ctl |= (mem->flags & MAP_ACTIVE) ? TCIC_MCTL_ENA : 0;
772 tcic_setw(TCIC_ADDR, addr + TCIC_MCTL_X);
773 tcic_setw(TCIC_DATA, ctl);
774
775 return 0;
776 } /* tcic_set_mem_map */
777
778 /*====================================================================*/
779
780 static int tcic_init(struct pcmcia_socket *s)
781 {
782 int i;
783 struct resource res = { .start = 0, .end = 0x1000 };
784 pccard_io_map io = { 0, 0, 0, 0, 1 };
785 pccard_mem_map mem = { .res = &res, };
786
787 for (i = 0; i < 2; i++) {
788 io.map = i;
789 tcic_set_io_map(s, &io);
790 }
791 for (i = 0; i < 5; i++) {
792 mem.map = i;
793 tcic_set_mem_map(s, &mem);
794 }
795 return 0;
796 }
797
798 static struct pccard_operations tcic_operations = {
799 .init = tcic_init,
800 .get_status = tcic_get_status,
801 .set_socket = tcic_set_socket,
802 .set_io_map = tcic_set_io_map,
803 .set_mem_map = tcic_set_mem_map,
804 };
805
806 /*====================================================================*/
807
808 module_init(init_tcic);
809 module_exit(exit_tcic);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree