[PATCH] pcmcia: remove unused p_dev->state flags
[deliverable/linux.git] / drivers / usb / host / sl811_cs.c
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1/*
2 * PCMCIA driver for SL811HS (as found in REX-CFU1U)
3 * Filename: sl811_cs.c
4 * Author: Yukio Yamamoto
5 *
6 * Port to sl811-hcd and 2.6.x by
7 * Botond Botyanszki <boti@rocketmail.com>
8 * Simon Pickering
9 *
10 * Last update: 2005-05-12
11 */
12
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/sched.h>
17#include <linux/ptrace.h>
18#include <linux/slab.h>
19#include <linux/string.h>
20#include <linux/timer.h>
21#include <linux/ioport.h>
d052d1be 22#include <linux/platform_device.h>
c6de2b64 23
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24#include <pcmcia/cs_types.h>
25#include <pcmcia/cs.h>
26#include <pcmcia/cistpl.h>
27#include <pcmcia/cisreg.h>
28#include <pcmcia/ds.h>
29
30#include <linux/usb_sl811.h>
31
32MODULE_AUTHOR("Botond Botyanszki");
33MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
34MODULE_LICENSE("GPL");
35
36
37/*====================================================================*/
38/* MACROS */
39/*====================================================================*/
40
c9a50cc9 41#if defined(DEBUG) || defined(PCMCIA_DEBUG)
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42
43static int pc_debug = 0;
44module_param(pc_debug, int, 0644);
45
46#define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
47
48#else
49#define DBG(n, args...) do{}while(0)
50#endif /* no debugging */
51
52#define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
53
54#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
55
56#define CS_CHECK(fn, ret) \
57 do { \
58 last_fn = (fn); \
59 if ((last_ret = (ret)) != 0) \
60 goto cs_failed; \
61 } while (0)
62
63/*====================================================================*/
64/* VARIABLES */
65/*====================================================================*/
66
67static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
68
c6de2b64 69typedef struct local_info_t {
fd238232 70 struct pcmcia_device *p_dev;
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71 dev_node_t node;
72} local_info_t;
73
fba395ee 74static void sl811_cs_release(struct pcmcia_device * link);
cc3b4866 75
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76/*====================================================================*/
77
78static void release_platform_dev(struct device * dev)
79{
80 DBG(0, "sl811_cs platform_dev release\n");
81 dev->parent = NULL;
82}
83
84static struct sl811_platform_data platform_data = {
85 .potpg = 100,
86 .power = 50, /* == 100mA */
87 // .reset = ... FIXME: invoke CF reset on the card
88};
89
90static struct resource resources[] = {
91 [0] = {
92 .flags = IORESOURCE_IRQ,
93 },
94 [1] = {
95 // .name = "address",
96 .flags = IORESOURCE_IO,
97 },
98 [2] = {
99 // .name = "data",
100 .flags = IORESOURCE_IO,
101 },
102};
103
a0c53f1d 104extern struct platform_driver sl811h_driver;
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105
106static struct platform_device platform_dev = {
107 .id = -1,
108 .dev = {
109 .platform_data = &platform_data,
110 .release = release_platform_dev,
111 },
112 .resource = resources,
113 .num_resources = ARRAY_SIZE(resources),
114};
115
116static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
117{
118 if (platform_dev.dev.parent)
119 return -EBUSY;
120 platform_dev.dev.parent = parent;
121
122 /* finish seting up the platform device */
123 resources[0].start = irq;
124
125 resources[1].start = base_addr;
126 resources[1].end = base_addr;
127
128 resources[2].start = base_addr + 1;
129 resources[2].end = base_addr + 1;
130
131 /* The driver core will probe for us. We know sl811-hcd has been
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132 * initialized already because of the link order dependency created
133 * by referencing "sl811h_driver".
c6de2b64 134 */
a0c53f1d 135 platform_dev.name = sl811h_driver.driver.name;
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136 return platform_device_register(&platform_dev);
137}
138
139/*====================================================================*/
140
fba395ee 141static void sl811_cs_detach(struct pcmcia_device *link)
c6de2b64 142{
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143 DBG(0, "sl811_cs_detach(0x%p)\n", link);
144
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145 link->state &= ~DEV_PRESENT;
146 if (link->state & DEV_CONFIG)
147 sl811_cs_release(link);
c6de2b64 148
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149 /* This points to the parent local_info_t struct */
150 kfree(link->priv);
151}
152
fba395ee 153static void sl811_cs_release(struct pcmcia_device * link)
c6de2b64 154{
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155 DBG(0, "sl811_cs_release(0x%p)\n", link);
156
fba395ee 157 pcmcia_disable_device(link);
c6de2b64 158 platform_device_unregister(&platform_dev);
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159}
160
15b99ac1 161static int sl811_cs_config(struct pcmcia_device *link)
c6de2b64 162{
fba395ee 163 struct device *parent = &handle_to_dev(link);
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164 local_info_t *dev = link->priv;
165 tuple_t tuple;
166 cisparse_t parse;
167 int last_fn, last_ret;
168 u_char buf[64];
169 config_info_t conf;
170 cistpl_cftable_entry_t dflt = { 0 };
171
172 DBG(0, "sl811_cs_config(0x%p)\n", link);
173
174 tuple.DesiredTuple = CISTPL_CONFIG;
175 tuple.Attributes = 0;
176 tuple.TupleData = buf;
177 tuple.TupleDataMax = sizeof(buf);
178 tuple.TupleOffset = 0;
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179 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
180 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
181 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
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182 link->conf.ConfigBase = parse.config.base;
183 link->conf.Present = parse.config.rmask[0];
184
185 /* Configure card */
186 link->state |= DEV_CONFIG;
187
188 /* Look up the current Vcc */
189 CS_CHECK(GetConfigurationInfo,
fba395ee 190 pcmcia_get_configuration_info(link, &conf));
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191
192 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
fba395ee 193 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
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194 while (1) {
195 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
196
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197 if (pcmcia_get_tuple_data(link, &tuple) != 0
198 || pcmcia_parse_tuple(link, &tuple, &parse)
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199 != 0)
200 goto next_entry;
201
202 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
203 dflt = *cfg;
204 }
205
206 if (cfg->index == 0)
207 goto next_entry;
208
209 link->conf.ConfigIndex = cfg->index;
210
211 /* Use power settings for Vcc and Vpp if present */
212 /* Note that the CIS values need to be rescaled */
213 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
214 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
215 != conf.Vcc)
216 goto next_entry;
217 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
218 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
219 != conf.Vcc)
220 goto next_entry;
221 }
222
223 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
70294b46 224 link->conf.Vpp =
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225 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
226 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
70294b46 227 link->conf.Vpp =
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228 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
229
230 /* we need an interrupt */
231 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
232 link->conf.Attributes |= CONF_ENABLE_IRQ;
233
234 /* IO window settings */
235 link->io.NumPorts1 = link->io.NumPorts2 = 0;
236 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
237 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
238
239 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
240 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
241 link->io.BasePort1 = io->win[0].base;
242 link->io.NumPorts1 = io->win[0].len;
243
fba395ee 244 if (pcmcia_request_io(link, &link->io) != 0)
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245 goto next_entry;
246 }
247 break;
248
249next_entry:
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250 pcmcia_disable_device(link);
251 last_ret = pcmcia_get_next_tuple(link, &tuple);
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252 }
253
254 /* require an IRQ and two registers */
255 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
256 goto cs_failed;
257 if (link->conf.Attributes & CONF_ENABLE_IRQ)
258 CS_CHECK(RequestIRQ,
fba395ee 259 pcmcia_request_irq(link, &link->irq));
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260 else
261 goto cs_failed;
262
263 CS_CHECK(RequestConfiguration,
fba395ee 264 pcmcia_request_configuration(link, &link->conf));
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265
266 sprintf(dev->node.dev_name, driver_name);
267 dev->node.major = dev->node.minor = 0;
fd238232 268 link->dev_node = &dev->node;
c6de2b64 269
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270 printk(KERN_INFO "%s: index 0x%02x: ",
271 dev->node.dev_name, link->conf.ConfigIndex);
272 if (link->conf.Vpp)
273 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
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274 printk(", irq %d", link->irq.AssignedIRQ);
275 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
276 link->io.BasePort1+link->io.NumPorts1-1);
277 printk("\n");
278
279 link->state &= ~DEV_CONFIG_PENDING;
280
281 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
282 < 0) {
283cs_failed:
284 printk("sl811_cs_config failed\n");
fba395ee 285 cs_error(link, last_fn, last_ret);
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286 sl811_cs_release(link);
287 link->state &= ~DEV_CONFIG_PENDING;
15b99ac1 288 return -ENODEV;
c6de2b64 289 }
15b99ac1 290 return 0;
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291}
292
15b99ac1 293static int sl811_cs_probe(struct pcmcia_device *link)
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294{
295 local_info_t *local;
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296
297 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
298 if (!local)
f8cfa618 299 return -ENOMEM;
c6de2b64 300 memset(local, 0, sizeof(local_info_t));
fba395ee 301 local->p_dev = link;
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302 link->priv = local;
303
304 /* Initialize */
305 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
306 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
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307 link->irq.Handler = NULL;
308
309 link->conf.Attributes = 0;
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310 link->conf.IntType = INT_MEMORY_AND_IO;
311
f8cfa618 312 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
15b99ac1 313 return sl811_cs_config(link);
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314}
315
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316static struct pcmcia_device_id sl811_ids[] = {
317 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
318 PCMCIA_DEVICE_NULL,
319};
320MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
321
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322static struct pcmcia_driver sl811_cs_driver = {
323 .owner = THIS_MODULE,
324 .drv = {
325 .name = (char *)driver_name,
326 },
15b99ac1 327 .probe = sl811_cs_probe,
cc3b4866 328 .remove = sl811_cs_detach,
22f3a8f5 329 .id_table = sl811_ids,
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330};
331
332/*====================================================================*/
333
334static int __init init_sl811_cs(void)
335{
336 return pcmcia_register_driver(&sl811_cs_driver);
337}
338module_init(init_sl811_cs);
339
340static void __exit exit_sl811_cs(void)
341{
342 pcmcia_unregister_driver(&sl811_cs_driver);
343}
344module_exit(exit_sl811_cs);
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