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1da177e4 LT |
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> | |
1da177e4 LT |
33 | #include <linux/types.h> |
34 | ||
1da177e4 LT |
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 | }; |