Remove obsolete #include <linux/config.h>
[linux-3.10.git] / 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/bulkmem.h>
39 #include <pcmcia/cistpl.h>
40 #include <pcmcia/bus_ops.h>
41 #include "cs_internal.h"
42
43 #include <asm/io.h>
44 #include <asm/irq.h>
45 #include <asm/system.h>
46
47 #include <asm/au1000.h>
48 #include <asm/au1000_pcmcia.h>
49
50 #define debug(fmt, arg...) do { } while (0)
51
52 #ifdef CONFIG_MIPS_PB1000
53 #include <asm/pb1000.h>
54 #define PCMCIA_IRQ AU1000_GPIO_15
55 #elif defined (CONFIG_MIPS_PB1500)
56 #include <asm/pb1500.h>
57 #define PCMCIA_IRQ AU1500_GPIO_203
58 #elif defined (CONFIG_MIPS_PB1100)
59 #include <asm/pb1100.h>
60 #define PCMCIA_IRQ AU1000_GPIO_11
61 #endif
62
63 static int pb1x00_pcmcia_init(struct pcmcia_init *init)
64 {
65 #ifdef CONFIG_MIPS_PB1000
66         u16 pcr;
67         pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
68
69         au_writel(0x8000, PB1000_MDR); /* clear pcmcia interrupt */
70         au_sync_delay(100);
71         au_writel(0x4000, PB1000_MDR); /* enable pcmcia interrupt */
72         au_sync();
73
74         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
75         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
76         au_writel(pcr, PB1000_PCR);
77         au_sync_delay(20);
78           
79         return PCMCIA_NUM_SOCKS;
80
81 #else /* fixme -- take care of the Pb1500 at some point */
82
83         u16 pcr;
84         pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
85         pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
86         au_writew(pcr, PCMCIA_BOARD_REG);
87         au_sync_delay(500);
88         return PCMCIA_NUM_SOCKS;
89 #endif
90 }
91
92 static int pb1x00_pcmcia_shutdown(void)
93 {
94 #ifdef CONFIG_MIPS_PB1000
95         u16 pcr;
96         pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
97         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
98         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
99         au_writel(pcr, PB1000_PCR);
100         au_sync_delay(20);
101         return 0;
102 #else
103         u16 pcr;
104         pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
105         pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
106         au_writew(pcr, PCMCIA_BOARD_REG);
107         au_sync_delay(2);
108         return 0;
109 #endif
110 }
111
112 static int 
113 pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
114 {
115         u32 inserted0, inserted1;
116         u16 vs0, vs1;
117
118 #ifdef CONFIG_MIPS_PB1000
119         vs0 = vs1 = (u16)au_readl(PB1000_ACR1);
120         inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2));
121         inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2));
122         vs0 = (vs0 >> 4) & 0x3;
123         vs1 = (vs1 >> 12) & 0x3;
124 #else
125         vs0 = (au_readw(BOARD_STATUS_REG) >> 4) & 0x3;
126 #ifdef CONFIG_MIPS_PB1500
127         inserted0 = !((au_readl(GPIO2_PINSTATE) >> 1) & 0x1); /* gpio 201 */
128 #else /* Pb1100 */
129         inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */
130 #endif
131         inserted1 = 0;
132 #endif
133
134         state->ready = 0;
135         state->vs_Xv = 0;
136         state->vs_3v = 0;
137         state->detect = 0;
138
139         if (sock == 0) {
140                 if (inserted0) {
141                         switch (vs0) {
142                                 case 0:
143                                 case 2:
144                                         state->vs_3v=1;
145                                         break;
146                                 case 3: /* 5V */
147                                         break;
148                                 default:
149                                         /* return without setting 'detect' */
150                                         printk(KERN_ERR "pb1x00 bad VS (%d)\n",
151                                                         vs0);
152                                         return 0;
153                         }
154                         state->detect = 1;
155                 }
156         }
157         else  {
158                 if (inserted1) {
159                         switch (vs1) {
160                                 case 0:
161                                 case 2:
162                                         state->vs_3v=1;
163                                         break;
164                                 case 3: /* 5V */
165                                         break;
166                                 default:
167                                         /* return without setting 'detect' */
168                                         printk(KERN_ERR "pb1x00 bad VS (%d)\n",
169                                                         vs1);
170                                         return 0;
171                         }
172                         state->detect = 1;
173                 }
174         }
175
176         if (state->detect) {
177                 state->ready = 1;
178         }
179
180         state->bvd1=1;
181         state->bvd2=1;
182         state->wrprot=0; 
183         return 1;
184 }
185
186
187 static int pb1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
188 {
189
190         if(info->sock > PCMCIA_MAX_SOCK) return -1;
191
192         /*
193          * Even in the case of the Pb1000, both sockets are connected
194          * to the same irq line.
195          */
196         info->irq = PCMCIA_IRQ;
197
198         return 0;
199 }
200
201
202 static int 
203 pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure)
204 {
205         u16 pcr;
206
207         if(configure->sock > PCMCIA_MAX_SOCK) return -1;
208
209 #ifdef CONFIG_MIPS_PB1000
210         pcr = au_readl(PB1000_PCR);
211
212         if (configure->sock == 0) {
213                 pcr &= ~(PCR_SLOT_0_VCC0 | PCR_SLOT_0_VCC1 | 
214                                 PCR_SLOT_0_VPP0 | PCR_SLOT_0_VPP1);
215         }
216         else  {
217                 pcr &= ~(PCR_SLOT_1_VCC0 | PCR_SLOT_1_VCC1 | 
218                                 PCR_SLOT_1_VPP0 | PCR_SLOT_1_VPP1);
219         }
220
221         pcr &= ~PCR_SLOT_0_RST;
222         debug("Vcc %dV Vpp %dV, pcr %x\n", 
223                         configure->vcc, configure->vpp, pcr);
224         switch(configure->vcc){
225                 case 0:  /* Vcc 0 */
226                         switch(configure->vpp) {
227                                 case 0:
228                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_GND,
229                                                         configure->sock);
230                                         break;
231                                 case 12:
232                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_12V,
233                                                         configure->sock);
234                                         break;
235                                 case 50:
236                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_5V,
237                                                         configure->sock);
238                                         break;
239                                 case 33:
240                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_3V,
241                                                         configure->sock);
242                                         break;
243                                 default:
244                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
245                                                         configure->sock);
246                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
247                                                         __FUNCTION__, 
248                                                         configure->vcc, 
249                                                         configure->vpp);
250                                         break;
251                         }
252                         break;
253                 case 50: /* Vcc 5V */
254                         switch(configure->vpp) {
255                                 case 0:
256                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_GND,
257                                                         configure->sock);
258                                         break;
259                                 case 50:
260                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_5V,
261                                                         configure->sock);
262                                         break;
263                                 case 12:
264                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_12V,
265                                                         configure->sock);
266                                         break;
267                                 case 33:
268                                         pcr |= SET_VCC_VPP(VCC_5V,VPP_3V,
269                                                         configure->sock);
270                                         break;
271                                 default:
272                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
273                                                         configure->sock);
274                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
275                                                         __FUNCTION__, 
276                                                         configure->vcc, 
277                                                         configure->vpp);
278                                         break;
279                         }
280                         break;
281                 case 33: /* Vcc 3.3V */
282                         switch(configure->vpp) {
283                                 case 0:
284                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_GND,
285                                                         configure->sock);
286                                         break;
287                                 case 50:
288                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_5V,
289                                                         configure->sock);
290                                         break;
291                                 case 12:
292                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_12V,
293                                                         configure->sock);
294                                         break;
295                                 case 33:
296                                         pcr |= SET_VCC_VPP(VCC_3V,VPP_3V,
297                                                         configure->sock);
298                                         break;
299                                 default:
300                                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
301                                                         configure->sock);
302                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
303                                                         __FUNCTION__, 
304                                                         configure->vcc, 
305                                                         configure->vpp);
306                                         break;
307                         }
308                         break;
309                 default: /* what's this ? */
310                         pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,configure->sock);
311                         printk(KERN_ERR "%s: bad Vcc %d\n", 
312                                         __FUNCTION__, configure->vcc);
313                         break;
314         }
315
316         if (configure->sock == 0) {
317         pcr &= ~(PCR_SLOT_0_RST);
318                 if (configure->reset)
319                 pcr |= PCR_SLOT_0_RST;
320         }
321         else {
322                 pcr &= ~(PCR_SLOT_1_RST);
323                 if (configure->reset)
324                         pcr |= PCR_SLOT_1_RST;
325         }
326         au_writel(pcr, PB1000_PCR);
327         au_sync_delay(300);
328
329 #else
330
331         pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf;
332
333         debug("Vcc %dV Vpp %dV, pcr %x, reset %d\n", 
334                         configure->vcc, configure->vpp, pcr, configure->reset);
335
336
337         switch(configure->vcc){
338                 case 0:  /* Vcc 0 */
339                         pcr |= SET_VCC_VPP(0,0);
340                         break;
341                 case 50: /* Vcc 5V */
342                         switch(configure->vpp) {
343                                 case 0:
344                                         pcr |= SET_VCC_VPP(2,0);
345                                         break;
346                                 case 50:
347                                         pcr |= SET_VCC_VPP(2,1);
348                                         break;
349                                 case 12:
350                                         pcr |= SET_VCC_VPP(2,2);
351                                         break;
352                                 case 33:
353                                 default:
354                                         pcr |= SET_VCC_VPP(0,0);
355                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
356                                                         __FUNCTION__, 
357                                                         configure->vcc, 
358                                                         configure->vpp);
359                                         break;
360                         }
361                         break;
362                 case 33: /* Vcc 3.3V */
363                         switch(configure->vpp) {
364                                 case 0:
365                                         pcr |= SET_VCC_VPP(1,0);
366                                         break;
367                                 case 12:
368                                         pcr |= SET_VCC_VPP(1,2);
369                                         break;
370                                 case 33:
371                                         pcr |= SET_VCC_VPP(1,1);
372                                         break;
373                                 case 50:
374                                 default:
375                                         pcr |= SET_VCC_VPP(0,0);
376                                         printk("%s: bad Vcc/Vpp (%d:%d)\n", 
377                                                         __FUNCTION__, 
378                                                         configure->vcc, 
379                                                         configure->vpp);
380                                         break;
381                         }
382                         break;
383                 default: /* what's this ? */
384                         pcr |= SET_VCC_VPP(0,0);
385                         printk(KERN_ERR "%s: bad Vcc %d\n", 
386                                         __FUNCTION__, configure->vcc);
387                         break;
388         }
389
390         au_writew(pcr, PCMCIA_BOARD_REG);
391         au_sync_delay(300);
392
393         if (!configure->reset) {
394                 pcr |= PC_DRV_EN;
395                 au_writew(pcr, PCMCIA_BOARD_REG);
396                 au_sync_delay(100);
397                 pcr |= PC_DEASSERT_RST;
398                 au_writew(pcr, PCMCIA_BOARD_REG);
399                 au_sync_delay(100);
400         }
401         else {
402                 pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
403                 au_writew(pcr, PCMCIA_BOARD_REG);
404                 au_sync_delay(100);
405         }
406 #endif
407         return 0;
408 }
409
410
411 struct pcmcia_low_level pb1x00_pcmcia_ops = { 
412         pb1x00_pcmcia_init,
413         pb1x00_pcmcia_shutdown,
414         pb1x00_pcmcia_socket_state,
415         pb1x00_pcmcia_get_irq_info,
416         pb1x00_pcmcia_configure_socket
417 };