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1da177e4 LT |
1 | /* |
2 | * | |
66213b3c | 3 | * Alchemy Semi Pb1000 boards specific pcmcia routines. |
1da177e4 LT |
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> | |
1da177e4 LT |
29 | #include <linux/timer.h> |
30 | #include <linux/mm.h> | |
31 | #include <linux/proc_fs.h> | |
1da177e4 LT |
32 | #include <linux/types.h> |
33 | ||
1da177e4 | 34 | #include <pcmcia/ss.h> |
1da177e4 | 35 | #include <pcmcia/cistpl.h> |
1da177e4 LT |
36 | |
37 | #include <asm/io.h> | |
38 | #include <asm/irq.h> | |
39 | #include <asm/system.h> | |
40 | ||
41 | #include <asm/au1000.h> | |
42 | #include <asm/au1000_pcmcia.h> | |
43 | ||
44 | #define debug(fmt, arg...) do { } while (0) | |
45 | ||
1da177e4 LT |
46 | #include <asm/pb1000.h> |
47 | #define PCMCIA_IRQ AU1000_GPIO_15 | |
1da177e4 LT |
48 | |
49 | static int pb1x00_pcmcia_init(struct pcmcia_init *init) | |
50 | { | |
1da177e4 LT |
51 | u16 pcr; |
52 | pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST; | |
53 | ||
54 | au_writel(0x8000, PB1000_MDR); /* clear pcmcia interrupt */ | |
55 | au_sync_delay(100); | |
56 | au_writel(0x4000, PB1000_MDR); /* enable pcmcia interrupt */ | |
57 | au_sync(); | |
58 | ||
59 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0); | |
60 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1); | |
61 | au_writel(pcr, PB1000_PCR); | |
62 | au_sync_delay(20); | |
63 | ||
64 | return PCMCIA_NUM_SOCKS; | |
1da177e4 LT |
65 | } |
66 | ||
67 | static int pb1x00_pcmcia_shutdown(void) | |
68 | { | |
1da177e4 LT |
69 | u16 pcr; |
70 | pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST; | |
71 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0); | |
72 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1); | |
73 | au_writel(pcr, PB1000_PCR); | |
74 | au_sync_delay(20); | |
75 | return 0; | |
1da177e4 LT |
76 | } |
77 | ||
78 | static int | |
79 | pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) | |
80 | { | |
81 | u32 inserted0, inserted1; | |
82 | u16 vs0, vs1; | |
83 | ||
1da177e4 LT |
84 | vs0 = vs1 = (u16)au_readl(PB1000_ACR1); |
85 | inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2)); | |
86 | inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2)); | |
87 | vs0 = (vs0 >> 4) & 0x3; | |
88 | vs1 = (vs1 >> 12) & 0x3; | |
1da177e4 LT |
89 | |
90 | state->ready = 0; | |
91 | state->vs_Xv = 0; | |
92 | state->vs_3v = 0; | |
93 | state->detect = 0; | |
94 | ||
95 | if (sock == 0) { | |
96 | if (inserted0) { | |
97 | switch (vs0) { | |
98 | case 0: | |
99 | case 2: | |
100 | state->vs_3v=1; | |
101 | break; | |
102 | case 3: /* 5V */ | |
103 | break; | |
104 | default: | |
105 | /* return without setting 'detect' */ | |
106 | printk(KERN_ERR "pb1x00 bad VS (%d)\n", | |
107 | vs0); | |
108 | return 0; | |
109 | } | |
110 | state->detect = 1; | |
111 | } | |
112 | } | |
113 | else { | |
114 | if (inserted1) { | |
115 | switch (vs1) { | |
116 | case 0: | |
117 | case 2: | |
118 | state->vs_3v=1; | |
119 | break; | |
120 | case 3: /* 5V */ | |
121 | break; | |
122 | default: | |
123 | /* return without setting 'detect' */ | |
124 | printk(KERN_ERR "pb1x00 bad VS (%d)\n", | |
125 | vs1); | |
126 | return 0; | |
127 | } | |
128 | state->detect = 1; | |
129 | } | |
130 | } | |
131 | ||
132 | if (state->detect) { | |
133 | state->ready = 1; | |
134 | } | |
135 | ||
136 | state->bvd1=1; | |
137 | state->bvd2=1; | |
138 | state->wrprot=0; | |
139 | return 1; | |
140 | } | |
141 | ||
142 | ||
143 | static int pb1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info) | |
144 | { | |
145 | ||
146 | if(info->sock > PCMCIA_MAX_SOCK) return -1; | |
147 | ||
148 | /* | |
149 | * Even in the case of the Pb1000, both sockets are connected | |
150 | * to the same irq line. | |
151 | */ | |
152 | info->irq = PCMCIA_IRQ; | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | ||
158 | static int | |
159 | pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure) | |
160 | { | |
161 | u16 pcr; | |
162 | ||
163 | if(configure->sock > PCMCIA_MAX_SOCK) return -1; | |
164 | ||
1da177e4 LT |
165 | pcr = au_readl(PB1000_PCR); |
166 | ||
167 | if (configure->sock == 0) { | |
168 | pcr &= ~(PCR_SLOT_0_VCC0 | PCR_SLOT_0_VCC1 | | |
169 | PCR_SLOT_0_VPP0 | PCR_SLOT_0_VPP1); | |
170 | } | |
171 | else { | |
172 | pcr &= ~(PCR_SLOT_1_VCC0 | PCR_SLOT_1_VCC1 | | |
173 | PCR_SLOT_1_VPP0 | PCR_SLOT_1_VPP1); | |
174 | } | |
175 | ||
176 | pcr &= ~PCR_SLOT_0_RST; | |
177 | debug("Vcc %dV Vpp %dV, pcr %x\n", | |
178 | configure->vcc, configure->vpp, pcr); | |
179 | switch(configure->vcc){ | |
180 | case 0: /* Vcc 0 */ | |
181 | switch(configure->vpp) { | |
182 | case 0: | |
183 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_GND, | |
184 | configure->sock); | |
185 | break; | |
186 | case 12: | |
187 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_12V, | |
188 | configure->sock); | |
189 | break; | |
190 | case 50: | |
191 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_5V, | |
192 | configure->sock); | |
193 | break; | |
194 | case 33: | |
195 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_3V, | |
196 | configure->sock); | |
197 | break; | |
198 | default: | |
199 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ, | |
200 | configure->sock); | |
201 | printk("%s: bad Vcc/Vpp (%d:%d)\n", | |
2e11cb4c | 202 | __func__, |
1da177e4 LT |
203 | configure->vcc, |
204 | configure->vpp); | |
205 | break; | |
206 | } | |
207 | break; | |
208 | case 50: /* Vcc 5V */ | |
209 | switch(configure->vpp) { | |
210 | case 0: | |
211 | pcr |= SET_VCC_VPP(VCC_5V,VPP_GND, | |
212 | configure->sock); | |
213 | break; | |
214 | case 50: | |
215 | pcr |= SET_VCC_VPP(VCC_5V,VPP_5V, | |
216 | configure->sock); | |
217 | break; | |
218 | case 12: | |
219 | pcr |= SET_VCC_VPP(VCC_5V,VPP_12V, | |
220 | configure->sock); | |
221 | break; | |
222 | case 33: | |
223 | pcr |= SET_VCC_VPP(VCC_5V,VPP_3V, | |
224 | configure->sock); | |
225 | break; | |
226 | default: | |
227 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ, | |
228 | configure->sock); | |
229 | printk("%s: bad Vcc/Vpp (%d:%d)\n", | |
2e11cb4c | 230 | __func__, |
1da177e4 LT |
231 | configure->vcc, |
232 | configure->vpp); | |
233 | break; | |
234 | } | |
235 | break; | |
236 | case 33: /* Vcc 3.3V */ | |
237 | switch(configure->vpp) { | |
238 | case 0: | |
239 | pcr |= SET_VCC_VPP(VCC_3V,VPP_GND, | |
240 | configure->sock); | |
241 | break; | |
242 | case 50: | |
243 | pcr |= SET_VCC_VPP(VCC_3V,VPP_5V, | |
244 | configure->sock); | |
245 | break; | |
246 | case 12: | |
247 | pcr |= SET_VCC_VPP(VCC_3V,VPP_12V, | |
248 | configure->sock); | |
249 | break; | |
250 | case 33: | |
251 | pcr |= SET_VCC_VPP(VCC_3V,VPP_3V, | |
252 | configure->sock); | |
253 | break; | |
254 | default: | |
255 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ, | |
256 | configure->sock); | |
257 | printk("%s: bad Vcc/Vpp (%d:%d)\n", | |
2e11cb4c | 258 | __func__, |
1da177e4 LT |
259 | configure->vcc, |
260 | configure->vpp); | |
261 | break; | |
262 | } | |
263 | break; | |
264 | default: /* what's this ? */ | |
265 | pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,configure->sock); | |
266 | printk(KERN_ERR "%s: bad Vcc %d\n", | |
2e11cb4c | 267 | __func__, configure->vcc); |
1da177e4 LT |
268 | break; |
269 | } | |
270 | ||
271 | if (configure->sock == 0) { | |
272 | pcr &= ~(PCR_SLOT_0_RST); | |
273 | if (configure->reset) | |
274 | pcr |= PCR_SLOT_0_RST; | |
275 | } | |
276 | else { | |
277 | pcr &= ~(PCR_SLOT_1_RST); | |
278 | if (configure->reset) | |
279 | pcr |= PCR_SLOT_1_RST; | |
280 | } | |
281 | au_writel(pcr, PB1000_PCR); | |
282 | au_sync_delay(300); | |
283 | ||
1da177e4 LT |
284 | return 0; |
285 | } | |
286 | ||
287 | ||
288 | struct pcmcia_low_level pb1x00_pcmcia_ops = { | |
289 | pb1x00_pcmcia_init, | |
290 | pb1x00_pcmcia_shutdown, | |
291 | pb1x00_pcmcia_socket_state, | |
292 | pb1x00_pcmcia_get_irq_info, | |
293 | pb1x00_pcmcia_configure_socket | |
294 | }; |