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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> | |
1da177e4 LT |
38 | #include <pcmcia/cistpl.h> |
39 | #include <pcmcia/bus_ops.h> | |
1da177e4 LT |
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", | |
2e11cb4c | 245 | __func__, |
1da177e4 LT |
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", | |
2e11cb4c | 273 | __func__, |
1da177e4 LT |
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", | |
2e11cb4c | 301 | __func__, |
1da177e4 LT |
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", | |
2e11cb4c | 310 | __func__, configure->vcc); |
1da177e4 LT |
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", | |
2e11cb4c | 354 | __func__, |
1da177e4 LT |
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", | |
2e11cb4c | 375 | __func__, |
1da177e4 LT |
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", | |
2e11cb4c | 384 | __func__, configure->vcc); |
1da177e4 LT |
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 | }; |