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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/au1000_pb1x00.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/pcmcia/au1000_pb1x00.c')
-rw-r--r--drivers/pcmcia/au1000_pb1x00.c419
1 files changed, 419 insertions, 0 deletions
diff --git a/drivers/pcmcia/au1000_pb1x00.c b/drivers/pcmcia/au1000_pb1x00.c
new file mode 100644
index 000000000000..df19ce1ea4f3
--- /dev/null
+++ b/drivers/pcmcia/au1000_pb1x00.c
@@ -0,0 +1,419 @@
1/*
2 *
3 * Alchemy Semi Pb1x00 boards specific pcmcia routines.
4 *
5 * Copyright 2002 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc.
7 * ppopov@mvista.com or source@mvista.com
8 *
9 * ########################################################################
10 *
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 * for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 */
24#include <linux/module.h>
25#include <linux/init.h>
26#include <linux/delay.h>
27#include <linux/ioport.h>
28#include <linux/kernel.h>
29#include <linux/tqueue.h>
30#include <linux/timer.h>
31#include <linux/mm.h>
32#include <linux/proc_fs.h>
33#include <linux/version.h>
34#include <linux/types.h>
35
36#include <pcmcia/version.h>
37#include <pcmcia/cs_types.h>
38#include <pcmcia/cs.h>
39#include <pcmcia/ss.h>
40#include <pcmcia/bulkmem.h>
41#include <pcmcia/cistpl.h>
42#include <pcmcia/bus_ops.h>
43#include "cs_internal.h"
44
45#include <asm/io.h>
46#include <asm/irq.h>
47#include <asm/system.h>
48
49#include <asm/au1000.h>
50#include <asm/au1000_pcmcia.h>
51
52#define debug(fmt, arg...) do { } while (0)
53
54#ifdef CONFIG_MIPS_PB1000
55#include <asm/pb1000.h>
56#define PCMCIA_IRQ AU1000_GPIO_15
57#elif defined (CONFIG_MIPS_PB1500)
58#include <asm/pb1500.h>
59#define PCMCIA_IRQ AU1500_GPIO_203
60#elif defined (CONFIG_MIPS_PB1100)
61#include <asm/pb1100.h>
62#define PCMCIA_IRQ AU1000_GPIO_11
63#endif
64
65static int pb1x00_pcmcia_init(struct pcmcia_init *init)
66{
67#ifdef CONFIG_MIPS_PB1000
68 u16 pcr;
69 pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
70
71 au_writel(0x8000, PB1000_MDR); /* clear pcmcia interrupt */
72 au_sync_delay(100);
73 au_writel(0x4000, PB1000_MDR); /* enable pcmcia interrupt */
74 au_sync();
75
76 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
77 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
78 au_writel(pcr, PB1000_PCR);
79 au_sync_delay(20);
80
81 return PCMCIA_NUM_SOCKS;
82
83#else /* fixme -- take care of the Pb1500 at some point */
84
85 u16 pcr;
86 pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
87 pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
88 au_writew(pcr, PCMCIA_BOARD_REG);
89 au_sync_delay(500);
90 return PCMCIA_NUM_SOCKS;
91#endif
92}
93
94static int pb1x00_pcmcia_shutdown(void)
95{
96#ifdef CONFIG_MIPS_PB1000
97 u16 pcr;
98 pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
99 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
100 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
101 au_writel(pcr, PB1000_PCR);
102 au_sync_delay(20);
103 return 0;
104#else
105 u16 pcr;
106 pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
107 pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
108 au_writew(pcr, PCMCIA_BOARD_REG);
109 au_sync_delay(2);
110 return 0;
111#endif
112}
113
114static int
115pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
116{
117 u32 inserted0, inserted1;
118 u16 vs0, vs1;
119
120#ifdef CONFIG_MIPS_PB1000
121 vs0 = vs1 = (u16)au_readl(PB1000_ACR1);
122 inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2));
123 inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2));
124 vs0 = (vs0 >> 4) & 0x3;
125 vs1 = (vs1 >> 12) & 0x3;
126#else
127 vs0 = (au_readw(BOARD_STATUS_REG) >> 4) & 0x3;
128#ifdef CONFIG_MIPS_PB1500
129 inserted0 = !((au_readl(GPIO2_PINSTATE) >> 1) & 0x1); /* gpio 201 */
130#else /* Pb1100 */
131 inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */
132#endif
133 inserted1 = 0;
134#endif
135
136 state->ready = 0;
137 state->vs_Xv = 0;
138 state->vs_3v = 0;
139 state->detect = 0;
140
141 if (sock == 0) {
142 if (inserted0) {
143 switch (vs0) {
144 case 0:
145 case 2:
146 state->vs_3v=1;
147 break;
148 case 3: /* 5V */
149 break;
150 default:
151 /* return without setting 'detect' */
152 printk(KERN_ERR "pb1x00 bad VS (%d)\n",
153 vs0);
154 return 0;
155 }
156 state->detect = 1;
157 }
158 }
159 else {
160 if (inserted1) {
161 switch (vs1) {
162 case 0:
163 case 2:
164 state->vs_3v=1;
165 break;
166 case 3: /* 5V */
167 break;
168 default:
169 /* return without setting 'detect' */
170 printk(KERN_ERR "pb1x00 bad VS (%d)\n",
171 vs1);
172 return 0;
173 }
174 state->detect = 1;
175 }
176 }
177
178 if (state->detect) {
179 state->ready = 1;
180 }
181
182 state->bvd1=1;
183 state->bvd2=1;
184 state->wrprot=0;
185 return 1;
186}
187
188
189static int pb1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
190{
191
192 if(info->sock > PCMCIA_MAX_SOCK) return -1;
193
194 /*
195 * Even in the case of the Pb1000, both sockets are connected
196 * to the same irq line.
197 */
198 info->irq = PCMCIA_IRQ;
199
200 return 0;
201}
202
203
204static int
205pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure)
206{
207 u16 pcr;
208
209 if(configure->sock > PCMCIA_MAX_SOCK) return -1;
210
211#ifdef CONFIG_MIPS_PB1000
212 pcr = au_readl(PB1000_PCR);
213
214 if (configure->sock == 0) {
215 pcr &= ~(PCR_SLOT_0_VCC0 | PCR_SLOT_0_VCC1 |
216 PCR_SLOT_0_VPP0 | PCR_SLOT_0_VPP1);
217 }
218 else {
219 pcr &= ~(PCR_SLOT_1_VCC0 | PCR_SLOT_1_VCC1 |
220 PCR_SLOT_1_VPP0 | PCR_SLOT_1_VPP1);
221 }
222
223 pcr &= ~PCR_SLOT_0_RST;
224 debug("Vcc %dV Vpp %dV, pcr %x\n",
225 configure->vcc, configure->vpp, pcr);
226 switch(configure->vcc){
227 case 0: /* Vcc 0 */
228 switch(configure->vpp) {
229 case 0:
230 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_GND,
231 configure->sock);
232 break;
233 case 12:
234 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_12V,
235 configure->sock);
236 break;
237 case 50:
238 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_5V,
239 configure->sock);
240 break;
241 case 33:
242 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_3V,
243 configure->sock);
244 break;
245 default:
246 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
247 configure->sock);
248 printk("%s: bad Vcc/Vpp (%d:%d)\n",
249 __FUNCTION__,
250 configure->vcc,
251 configure->vpp);
252 break;
253 }
254 break;
255 case 50: /* Vcc 5V */
256 switch(configure->vpp) {
257 case 0:
258 pcr |= SET_VCC_VPP(VCC_5V,VPP_GND,
259 configure->sock);
260 break;
261 case 50:
262 pcr |= SET_VCC_VPP(VCC_5V,VPP_5V,
263 configure->sock);
264 break;
265 case 12:
266 pcr |= SET_VCC_VPP(VCC_5V,VPP_12V,
267 configure->sock);
268 break;
269 case 33:
270 pcr |= SET_VCC_VPP(VCC_5V,VPP_3V,
271 configure->sock);
272 break;
273 default:
274 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
275 configure->sock);
276 printk("%s: bad Vcc/Vpp (%d:%d)\n",
277 __FUNCTION__,
278 configure->vcc,
279 configure->vpp);
280 break;
281 }
282 break;
283 case 33: /* Vcc 3.3V */
284 switch(configure->vpp) {
285 case 0:
286 pcr |= SET_VCC_VPP(VCC_3V,VPP_GND,
287 configure->sock);
288 break;
289 case 50:
290 pcr |= SET_VCC_VPP(VCC_3V,VPP_5V,
291 configure->sock);
292 break;
293 case 12:
294 pcr |= SET_VCC_VPP(VCC_3V,VPP_12V,
295 configure->sock);
296 break;
297 case 33:
298 pcr |= SET_VCC_VPP(VCC_3V,VPP_3V,
299 configure->sock);
300 break;
301 default:
302 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
303 configure->sock);
304 printk("%s: bad Vcc/Vpp (%d:%d)\n",
305 __FUNCTION__,
306 configure->vcc,
307 configure->vpp);
308 break;
309 }
310 break;
311 default: /* what's this ? */
312 pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,configure->sock);
313 printk(KERN_ERR "%s: bad Vcc %d\n",
314 __FUNCTION__, configure->vcc);
315 break;
316 }
317
318 if (configure->sock == 0) {
319 pcr &= ~(PCR_SLOT_0_RST);
320 if (configure->reset)
321 pcr |= PCR_SLOT_0_RST;
322 }
323 else {
324 pcr &= ~(PCR_SLOT_1_RST);
325 if (configure->reset)
326 pcr |= PCR_SLOT_1_RST;
327 }
328 au_writel(pcr, PB1000_PCR);
329 au_sync_delay(300);
330
331#else
332
333 pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf;
334
335 debug("Vcc %dV Vpp %dV, pcr %x, reset %d\n",
336 configure->vcc, configure->vpp, pcr, configure->reset);
337
338
339 switch(configure->vcc){
340 case 0: /* Vcc 0 */
341 pcr |= SET_VCC_VPP(0,0);
342 break;
343 case 50: /* Vcc 5V */
344 switch(configure->vpp) {
345 case 0:
346 pcr |= SET_VCC_VPP(2,0);
347 break;
348 case 50:
349 pcr |= SET_VCC_VPP(2,1);
350 break;
351 case 12:
352 pcr |= SET_VCC_VPP(2,2);
353 break;
354 case 33:
355 default:
356 pcr |= SET_VCC_VPP(0,0);
357 printk("%s: bad Vcc/Vpp (%d:%d)\n",
358 __FUNCTION__,
359 configure->vcc,
360 configure->vpp);
361 break;
362 }
363 break;
364 case 33: /* Vcc 3.3V */
365 switch(configure->vpp) {
366 case 0:
367 pcr |= SET_VCC_VPP(1,0);
368 break;
369 case 12:
370 pcr |= SET_VCC_VPP(1,2);
371 break;
372 case 33:
373 pcr |= SET_VCC_VPP(1,1);
374 break;
375 case 50:
376 default:
377 pcr |= SET_VCC_VPP(0,0);
378 printk("%s: bad Vcc/Vpp (%d:%d)\n",
379 __FUNCTION__,
380 configure->vcc,
381 configure->vpp);
382 break;
383 }
384 break;
385 default: /* what's this ? */
386 pcr |= SET_VCC_VPP(0,0);
387 printk(KERN_ERR "%s: bad Vcc %d\n",
388 __FUNCTION__, configure->vcc);
389 break;
390 }
391
392 au_writew(pcr, PCMCIA_BOARD_REG);
393 au_sync_delay(300);
394
395 if (!configure->reset) {
396 pcr |= PC_DRV_EN;
397 au_writew(pcr, PCMCIA_BOARD_REG);
398 au_sync_delay(100);
399 pcr |= PC_DEASSERT_RST;
400 au_writew(pcr, PCMCIA_BOARD_REG);
401 au_sync_delay(100);
402 }
403 else {
404 pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
405 au_writew(pcr, PCMCIA_BOARD_REG);
406 au_sync_delay(100);
407 }
408#endif
409 return 0;
410}
411
412
413struct pcmcia_low_level pb1x00_pcmcia_ops = {
414 pb1x00_pcmcia_init,
415 pb1x00_pcmcia_shutdown,
416 pb1x00_pcmcia_socket_state,
417 pb1x00_pcmcia_get_irq_info,
418 pb1x00_pcmcia_configure_socket
419};
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