Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[linux-2.6] / drivers / pcmcia / au1000_pb1x00.c
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/types.h>
34
35 #include <pcmcia/cs_types.h>
36 #include <pcmcia/cs.h>
37 #include <pcmcia/ss.h>
38 #include <pcmcia/cistpl.h>
39 #include <pcmcia/bus_ops.h>
40
41 #include <asm/io.h>
42 #include <asm/irq.h>
43 #include <asm/system.h>
44
45 #include <asm/au1000.h>
46 #include <asm/au1000_pcmcia.h>
47
48 #define debug(fmt, arg...) do { } while (0)
49
50 #ifdef CONFIG_MIPS_PB1000
51 #include <asm/pb1000.h>
52 #define PCMCIA_IRQ AU1000_GPIO_15
53 #elif defined (CONFIG_MIPS_PB1500)
54 #include <asm/pb1500.h>
55 #define PCMCIA_IRQ AU1500_GPIO_203
56 #elif defined (CONFIG_MIPS_PB1100)
57 #include <asm/pb1100.h>
58 #define PCMCIA_IRQ AU1000_GPIO_11
59 #endif
60
61 static int pb1x00_pcmcia_init(struct pcmcia_init *init)
62 {
63 #ifdef CONFIG_MIPS_PB1000
64         u16 pcr;
65         pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
66
67         au_writel(0x8000, PB1000_MDR); /* clear pcmcia interrupt */
68         au_sync_delay(100);
69         au_writel(0x4000, PB1000_MDR); /* enable pcmcia interrupt */
70         au_sync();
71
72         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
73         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
74         au_writel(pcr, PB1000_PCR);
75         au_sync_delay(20);
76           
77         return PCMCIA_NUM_SOCKS;
78
79 #else /* fixme -- take care of the Pb1500 at some point */
80
81         u16 pcr;
82         pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
83         pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
84         au_writew(pcr, PCMCIA_BOARD_REG);
85         au_sync_delay(500);
86         return PCMCIA_NUM_SOCKS;
87 #endif
88 }
89
90 static int pb1x00_pcmcia_shutdown(void)
91 {
92 #ifdef CONFIG_MIPS_PB1000
93         u16 pcr;
94         pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
95         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
96         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
97         au_writel(pcr, PB1000_PCR);
98         au_sync_delay(20);
99         return 0;
100 #else
101         u16 pcr;
102         pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
103         pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
104         au_writew(pcr, PCMCIA_BOARD_REG);
105         au_sync_delay(2);
106         return 0;
107 #endif
108 }
109
110 static int 
111 pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
112 {
113         u32 inserted0, inserted1;
114         u16 vs0, vs1;
115
116 #ifdef CONFIG_MIPS_PB1000
117         vs0 = vs1 = (u16)au_readl(PB1000_ACR1);
118         inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2));
119         inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2));
120         vs0 = (vs0 >> 4) & 0x3;
121         vs1 = (vs1 >> 12) & 0x3;
122 #else
123         vs0 = (au_readw(BOARD_STATUS_REG) >> 4) & 0x3;
124 #ifdef CONFIG_MIPS_PB1500
125         inserted0 = !((au_readl(GPIO2_PINSTATE) >> 1) & 0x1); /* gpio 201 */
126 #else /* Pb1100 */
127         inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */
128 #endif
129         inserted1 = 0;
130 #endif
131
132         state->ready = 0;
133         state->vs_Xv = 0;
134         state->vs_3v = 0;
135         state->detect = 0;
136
137         if (sock == 0) {
138                 if (inserted0) {
139                         switch (vs0) {
140                                 case 0:
141                                 case 2:
142                                         state->vs_3v=1;
143                                         break;
144                                 case 3: /* 5V */
145                                         break;
146                                 default:
147                                         /* return without setting 'detect' */
148                                         printk(KERN_ERR "pb1x00 bad VS (%d)\n",
149                                                         vs0);
150                                         return 0;
151                         }
152                         state->detect = 1;
153                 }
154         }
155         else  {
156                 if (inserted1) {
157                         switch (vs1) {
158                                 case 0:
159                                 case 2:
160                                         state->vs_3v=1;
161                                         break;
162                                 case 3: /* 5V */
163                                         break;
164                                 default:
165                                         /* return without setting 'detect' */
166                                         printk(KERN_ERR "pb1x00 bad VS (%d)\n",
167                                                         vs1);
168                                         return 0;
169                         }
170                         state->detect = 1;
171                 }
172         }
173
174         if (state->detect) {
175                 state->ready = 1;
176         }
177
178         state->bvd1=1;
179         state->bvd2=1;
180         state->wrprot=0; 
181         return 1;
182 }
183
184
185 static int pb1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
186 {
187
188         if(info->sock > PCMCIA_MAX_SOCK) return -1;
189
190         /*
191          * Even in the case of the Pb1000, both sockets are connected
192          * to the same irq line.
193          */
194         info->irq = PCMCIA_IRQ;
195
196         return 0;
197 }
198
199
200 static int 
201 pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure)
202 {
203         u16 pcr;
204
205         if(configure->sock > PCMCIA_MAX_SOCK) return -1;
206
207 #ifdef CONFIG_MIPS_PB1000
208         pcr = au_readl(PB1000_PCR);
209
210         if (configure->sock == 0) {
211                 pcr &= ~(PCR_SLOT_0_VCC0 | PCR_SLOT_0_VCC1 | 
212                                 PCR_SLOT_0_VPP0 | PCR_SLOT_0_VPP1);
213         }
214         else  {
215                 pcr &= ~(PCR_SLOT_1_VCC0 | PCR_SLOT_1_VCC1 | 
216                                 PCR_SLOT_1_VPP0 | PCR_SLOT_1_VPP1);
217         }
218
219         pcr &= ~PCR_SLOT_0_RST;
220         debug("Vcc %dV Vpp %dV, pcr %x\n", 
221                         configure->vcc, configure->vpp, pcr);
222         switch(configure->vcc){
223                 case 0:  /* Vcc 0 */
224                         switch(configure->vpp) {
225                                 case 0:
226                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_GND,
227                                                         configure->sock);
228                                         break;
229                                 case 12:
230                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_12V,
231                                                         configure->sock);
232                                         break;
233                                 case 50:
234                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_5V,
235                                                         configure->sock);
236                                         break;
237                                 case 33:
238                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_3V,
239                                                         configure->sock);
240                                         break;
241                                 default:
242                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
243                                                         configure->sock);
244                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
245                                                         __func__,
246                                                         configure->vcc, 
247                                                         configure->vpp);
248                                         break;
249                         }
250                         break;
251                 case 50: /* Vcc 5V */
252                         switch(configure->vpp) {
253                                 case 0:
254                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_GND,
255                                                         configure->sock);
256                                         break;
257                                 case 50:
258                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_5V,
259                                                         configure->sock);
260                                         break;
261                                 case 12:
262                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_12V,
263                                                         configure->sock);
264                                         break;
265                                 case 33:
266                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_3V,
267                                                         configure->sock);
268                                         break;
269                                 default:
270                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
271                                                         configure->sock);
272                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
273                                                         __func__,
274                                                         configure->vcc, 
275                                                         configure->vpp);
276                                         break;
277                         }
278                         break;
279                 case 33: /* Vcc 3.3V */
280                         switch(configure->vpp) {
281                                 case 0:
282                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_GND,
283                                                         configure->sock);
284                                         break;
285                                 case 50:
286                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_5V,
287                                                         configure->sock);
288                                         break;
289                                 case 12:
290                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_12V,
291                                                         configure->sock);
292                                         break;
293                                 case 33:
294                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_3V,
295                                                         configure->sock);
296                                         break;
297                                 default:
298                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
299                                                         configure->sock);
300                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
301                                                         __func__,
302                                                         configure->vcc, 
303                                                         configure->vpp);
304                                         break;
305                         }
306                         break;
307                 default: /* what's this ? */
308                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,configure->sock);
309                         printk(KERN_ERR "%s: bad Vcc %d\n", 
310                                         __func__, configure->vcc);
311                         break;
312         }
313
314         if (configure->sock == 0) {
315         pcr &= ~(PCR_SLOT_0_RST);
316                 if (configure->reset)
317                 pcr |= PCR_SLOT_0_RST;
318         }
319         else {
320                 pcr &= ~(PCR_SLOT_1_RST);
321                 if (configure->reset)
322                         pcr |= PCR_SLOT_1_RST;
323         }
324         au_writel(pcr, PB1000_PCR);
325         au_sync_delay(300);
326
327 #else
328
329         pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf;
330
331         debug("Vcc %dV Vpp %dV, pcr %x, reset %d\n", 
332                         configure->vcc, configure->vpp, pcr, configure->reset);
333
334
335         switch(configure->vcc){
336                 case 0:  /* Vcc 0 */
337                         pcr |= SET_VCC_VPP(0,0);
338                         break;
339                 case 50: /* Vcc 5V */
340                         switch(configure->vpp) {
341                                 case 0:
342                                         pcr |= SET_VCC_VPP(2,0);
343                                         break;
344                                 case 50:
345                                         pcr |= SET_VCC_VPP(2,1);
346                                         break;
347                                 case 12:
348                                         pcr |= SET_VCC_VPP(2,2);
349                                         break;
350                                 case 33:
351                                 default:
352                                         pcr |= SET_VCC_VPP(0,0);
353                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
354                                                         __func__,
355                                                         configure->vcc, 
356                                                         configure->vpp);
357                                         break;
358                         }
359                         break;
360                 case 33: /* Vcc 3.3V */
361                         switch(configure->vpp) {
362                                 case 0:
363                                         pcr |= SET_VCC_VPP(1,0);
364                                         break;
365                                 case 12:
366                                         pcr |= SET_VCC_VPP(1,2);
367                                         break;
368                                 case 33:
369                                         pcr |= SET_VCC_VPP(1,1);
370                                         break;
371                                 case 50:
372                                 default:
373                                         pcr |= SET_VCC_VPP(0,0);
374                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
375                                                         __func__,
376                                                         configure->vcc, 
377                                                         configure->vpp);
378                                         break;
379                         }
380                         break;
381                 default: /* what's this ? */
382                         pcr |= SET_VCC_VPP(0,0);
383                         printk(KERN_ERR "%s: bad Vcc %d\n", 
384                                         __func__, configure->vcc);
385                         break;
386         }
387
388         au_writew(pcr, PCMCIA_BOARD_REG);
389         au_sync_delay(300);
390
391         if (!configure->reset) {
392                 pcr |= PC_DRV_EN;
393                 au_writew(pcr, PCMCIA_BOARD_REG);
394                 au_sync_delay(100);
395                 pcr |= PC_DEASSERT_RST;
396                 au_writew(pcr, PCMCIA_BOARD_REG);
397                 au_sync_delay(100);
398         }
399         else {
400                 pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
401                 au_writew(pcr, PCMCIA_BOARD_REG);
402                 au_sync_delay(100);
403         }
404 #endif
405         return 0;
406 }
407
408
409 struct pcmcia_low_level pb1x00_pcmcia_ops = { 
410         pb1x00_pcmcia_init,
411         pb1x00_pcmcia_shutdown,
412         pb1x00_pcmcia_socket_state,
413         pb1x00_pcmcia_get_irq_info,
414         pb1x00_pcmcia_configure_socket
415 };