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33#include <linux/module.h>
34#include <linux/init.h>
35#include <linux/cpufreq.h>
36#include <linux/ioport.h>
37#include <linux/kernel.h>
38#include <linux/spinlock.h>
39#include <linux/io.h>
40#include <linux/slab.h>
41
42#include <mach/hardware.h>
43#include <asm/irq.h>
44
45#include "soc_common.h"
46#include "sa11xx_base.h"
47
48
49
50
51
52
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54
55
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58
59
60
61
62static unsigned int
63sa1100_pcmcia_default_mecr_timing(struct soc_pcmcia_socket *skt,
64 unsigned int cpu_speed,
65 unsigned int cmd_time)
66{
67 return sa1100_pcmcia_mecr_bs(cmd_time, cpu_speed);
68}
69
70
71
72
73
74
75
76
77
78static int
79sa1100_pcmcia_set_mecr(struct soc_pcmcia_socket *skt, unsigned int cpu_clock)
80{
81 struct soc_pcmcia_timing timing;
82 u32 mecr, old_mecr;
83 unsigned long flags;
84 unsigned int bs_io, bs_mem, bs_attr;
85
86 soc_common_pcmcia_get_timing(skt, &timing);
87
88 bs_io = skt->ops->get_timing(skt, cpu_clock, timing.io);
89 bs_mem = skt->ops->get_timing(skt, cpu_clock, timing.mem);
90 bs_attr = skt->ops->get_timing(skt, cpu_clock, timing.attr);
91
92 local_irq_save(flags);
93
94 old_mecr = mecr = MECR;
95 MECR_FAST_SET(mecr, skt->nr, 0);
96 MECR_BSIO_SET(mecr, skt->nr, bs_io);
97 MECR_BSA_SET(mecr, skt->nr, bs_attr);
98 MECR_BSM_SET(mecr, skt->nr, bs_mem);
99 if (old_mecr != mecr)
100 MECR = mecr;
101
102 local_irq_restore(flags);
103
104 debug(skt, 2, "FAST %X BSM %X BSA %X BSIO %X\n",
105 MECR_FAST_GET(mecr, skt->nr),
106 MECR_BSM_GET(mecr, skt->nr), MECR_BSA_GET(mecr, skt->nr),
107 MECR_BSIO_GET(mecr, skt->nr));
108
109 return 0;
110}
111
112#ifdef CONFIG_CPU_FREQ
113static int
114sa1100_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
115 unsigned long val,
116 struct cpufreq_freqs *freqs)
117{
118 switch (val) {
119 case CPUFREQ_PRECHANGE:
120 if (freqs->new > freqs->old)
121 sa1100_pcmcia_set_mecr(skt, freqs->new);
122 break;
123
124 case CPUFREQ_POSTCHANGE:
125 if (freqs->new < freqs->old)
126 sa1100_pcmcia_set_mecr(skt, freqs->new);
127 break;
128 case CPUFREQ_RESUMECHANGE:
129 sa1100_pcmcia_set_mecr(skt, freqs->new);
130 break;
131 }
132
133 return 0;
134}
135
136#endif
137
138static int
139sa1100_pcmcia_set_timing(struct soc_pcmcia_socket *skt)
140{
141 return sa1100_pcmcia_set_mecr(skt, cpufreq_get(0));
142}
143
144static int
145sa1100_pcmcia_show_timing(struct soc_pcmcia_socket *skt, char *buf)
146{
147 struct soc_pcmcia_timing timing;
148 unsigned int clock = cpufreq_get(0);
149 unsigned long mecr = MECR;
150 char *p = buf;
151
152 soc_common_pcmcia_get_timing(skt, &timing);
153
154 p+=sprintf(p, "I/O : %u (%u)\n", timing.io,
155 sa1100_pcmcia_cmd_time(clock, MECR_BSIO_GET(mecr, skt->nr)));
156
157 p+=sprintf(p, "attribute: %u (%u)\n", timing.attr,
158 sa1100_pcmcia_cmd_time(clock, MECR_BSA_GET(mecr, skt->nr)));
159
160 p+=sprintf(p, "common : %u (%u)\n", timing.mem,
161 sa1100_pcmcia_cmd_time(clock, MECR_BSM_GET(mecr, skt->nr)));
162
163 return p - buf;
164}
165
166static const char *skt_names[] = {
167 "PCMCIA socket 0",
168 "PCMCIA socket 1",
169};
170
171#define SKT_DEV_INFO_SIZE(n) \
172 (sizeof(struct skt_dev_info) + (n)*sizeof(struct soc_pcmcia_socket))
173
174int sa11xx_drv_pcmcia_add_one(struct soc_pcmcia_socket *skt)
175{
176 skt->res_skt.start = _PCMCIA(skt->nr);
177 skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1;
178 skt->res_skt.name = skt_names[skt->nr];
179 skt->res_skt.flags = IORESOURCE_MEM;
180
181 skt->res_io.start = _PCMCIAIO(skt->nr);
182 skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1;
183 skt->res_io.name = "io";
184 skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
185
186 skt->res_mem.start = _PCMCIAMem(skt->nr);
187 skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1;
188 skt->res_mem.name = "memory";
189 skt->res_mem.flags = IORESOURCE_MEM;
190
191 skt->res_attr.start = _PCMCIAAttr(skt->nr);
192 skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1;
193 skt->res_attr.name = "attribute";
194 skt->res_attr.flags = IORESOURCE_MEM;
195
196 return soc_pcmcia_add_one(skt);
197}
198EXPORT_SYMBOL(sa11xx_drv_pcmcia_add_one);
199
200void sa11xx_drv_pcmcia_ops(struct pcmcia_low_level *ops)
201{
202
203
204
205
206 if (!ops->get_timing)
207 ops->get_timing = sa1100_pcmcia_default_mecr_timing;
208
209
210 ops->set_timing = sa1100_pcmcia_set_timing;
211 ops->show_timing = sa1100_pcmcia_show_timing;
212#ifdef CONFIG_CPU_FREQ
213 ops->frequency_change = sa1100_pcmcia_frequency_change;
214#endif
215}
216EXPORT_SYMBOL(sa11xx_drv_pcmcia_ops);
217
218int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
219 int first, int nr)
220{
221 struct skt_dev_info *sinfo;
222 struct soc_pcmcia_socket *skt;
223 int i, ret = 0;
224
225 sa11xx_drv_pcmcia_ops(ops);
226
227 sinfo = kzalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL);
228 if (!sinfo)
229 return -ENOMEM;
230
231 sinfo->nskt = nr;
232
233
234 for (i = 0; i < nr; i++) {
235 skt = &sinfo->skt[i];
236
237 skt->nr = first + i;
238 soc_pcmcia_init_one(skt, ops, dev);
239
240 ret = sa11xx_drv_pcmcia_add_one(skt);
241 if (ret)
242 break;
243 }
244
245 if (ret) {
246 while (--i >= 0)
247 soc_pcmcia_remove_one(&sinfo->skt[i]);
248 kfree(sinfo);
249 } else {
250 dev_set_drvdata(dev, sinfo);
251 }
252
253 return ret;
254}
255EXPORT_SYMBOL(sa11xx_drv_pcmcia_probe);
256
257static int __init sa11xx_pcmcia_init(void)
258{
259 return 0;
260}
261fs_initcall(sa11xx_pcmcia_init);
262
263static void __exit sa11xx_pcmcia_exit(void) {}
264
265module_exit(sa11xx_pcmcia_exit);
266
267MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
268MODULE_DESCRIPTION("Linux PCMCIA Card Services: SA-11xx core socket driver");
269MODULE_LICENSE("Dual MPL/GPL");
270