[PATCH] pcmcia: rename pcmcia_device.state
[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
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69typedef struct local_info_t {
70 dev_link_t link;
71 dev_node_t node;
72} local_info_t;
73
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74static void sl811_cs_release(dev_link_t * link);
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
cc3b4866 141static void sl811_cs_detach(struct pcmcia_device *p_dev)
c6de2b64 142{
cc3b4866 143 dev_link_t *link = dev_to_instance(p_dev);
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144
145 DBG(0, "sl811_cs_detach(0x%p)\n", link);
146
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147 link->state &= ~DEV_PRESENT;
148 if (link->state & DEV_CONFIG)
149 sl811_cs_release(link);
c6de2b64 150
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151 /* This points to the parent local_info_t struct */
152 kfree(link->priv);
153}
154
155static void sl811_cs_release(dev_link_t * link)
156{
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157 DBG(0, "sl811_cs_release(0x%p)\n", link);
158
50db3fdb 159 pcmcia_disable_device(link->handle);
c6de2b64 160 platform_device_unregister(&platform_dev);
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161}
162
163static void sl811_cs_config(dev_link_t *link)
164{
165 client_handle_t handle = link->handle;
166 struct device *parent = &handle_to_dev(handle);
167 local_info_t *dev = link->priv;
168 tuple_t tuple;
169 cisparse_t parse;
170 int last_fn, last_ret;
171 u_char buf[64];
172 config_info_t conf;
173 cistpl_cftable_entry_t dflt = { 0 };
174
175 DBG(0, "sl811_cs_config(0x%p)\n", link);
176
177 tuple.DesiredTuple = CISTPL_CONFIG;
178 tuple.Attributes = 0;
179 tuple.TupleData = buf;
180 tuple.TupleDataMax = sizeof(buf);
181 tuple.TupleOffset = 0;
182 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
183 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
184 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
185 link->conf.ConfigBase = parse.config.base;
186 link->conf.Present = parse.config.rmask[0];
187
188 /* Configure card */
189 link->state |= DEV_CONFIG;
190
191 /* Look up the current Vcc */
192 CS_CHECK(GetConfigurationInfo,
193 pcmcia_get_configuration_info(handle, &conf));
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194
195 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
196 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
197 while (1) {
198 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
199
200 if (pcmcia_get_tuple_data(handle, &tuple) != 0
201 || pcmcia_parse_tuple(handle, &tuple, &parse)
202 != 0)
203 goto next_entry;
204
205 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
206 dflt = *cfg;
207 }
208
209 if (cfg->index == 0)
210 goto next_entry;
211
212 link->conf.ConfigIndex = cfg->index;
213
214 /* Use power settings for Vcc and Vpp if present */
215 /* Note that the CIS values need to be rescaled */
216 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
217 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
218 != conf.Vcc)
219 goto next_entry;
220 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
221 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
222 != conf.Vcc)
223 goto next_entry;
224 }
225
226 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
70294b46 227 link->conf.Vpp =
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228 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
229 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
70294b46 230 link->conf.Vpp =
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231 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
232
233 /* we need an interrupt */
234 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
235 link->conf.Attributes |= CONF_ENABLE_IRQ;
236
237 /* IO window settings */
238 link->io.NumPorts1 = link->io.NumPorts2 = 0;
239 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
240 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
241
242 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
243 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
244 link->io.BasePort1 = io->win[0].base;
245 link->io.NumPorts1 = io->win[0].len;
246
247 if (pcmcia_request_io(link->handle, &link->io) != 0)
248 goto next_entry;
249 }
250 break;
251
252next_entry:
50db3fdb 253 pcmcia_disable_device(handle);
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254 last_ret = pcmcia_get_next_tuple(handle, &tuple);
255 }
256
257 /* require an IRQ and two registers */
258 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
259 goto cs_failed;
260 if (link->conf.Attributes & CONF_ENABLE_IRQ)
261 CS_CHECK(RequestIRQ,
262 pcmcia_request_irq(link->handle, &link->irq));
263 else
264 goto cs_failed;
265
266 CS_CHECK(RequestConfiguration,
267 pcmcia_request_configuration(link->handle, &link->conf));
268
269 sprintf(dev->node.dev_name, driver_name);
270 dev->node.major = dev->node.minor = 0;
271 link->dev = &dev->node;
272
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273 printk(KERN_INFO "%s: index 0x%02x: ",
274 dev->node.dev_name, link->conf.ConfigIndex);
275 if (link->conf.Vpp)
276 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
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277 printk(", irq %d", link->irq.AssignedIRQ);
278 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
279 link->io.BasePort1+link->io.NumPorts1-1);
280 printk("\n");
281
282 link->state &= ~DEV_CONFIG_PENDING;
283
284 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
285 < 0) {
286cs_failed:
287 printk("sl811_cs_config failed\n");
288 cs_error(link->handle, last_fn, last_ret);
289 sl811_cs_release(link);
290 link->state &= ~DEV_CONFIG_PENDING;
291 }
292}
293
f8cfa618 294static int sl811_cs_attach(struct pcmcia_device *p_dev)
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295{
296 local_info_t *local;
297 dev_link_t *link;
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298
299 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
300 if (!local)
f8cfa618 301 return -ENOMEM;
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302 memset(local, 0, sizeof(local_info_t));
303 link = &local->link;
304 link->priv = local;
305
306 /* Initialize */
307 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
308 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
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309 link->irq.Handler = NULL;
310
311 link->conf.Attributes = 0;
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312 link->conf.IntType = INT_MEMORY_AND_IO;
313
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314 link->handle = p_dev;
315 p_dev->instance = link;
c6de2b64 316
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317 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
318 sl811_cs_config(link);
319
320 return 0;
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321}
322
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323static struct pcmcia_device_id sl811_ids[] = {
324 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
325 PCMCIA_DEVICE_NULL,
326};
327MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
328
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329static struct pcmcia_driver sl811_cs_driver = {
330 .owner = THIS_MODULE,
331 .drv = {
332 .name = (char *)driver_name,
333 },
f8cfa618 334 .probe = sl811_cs_attach,
cc3b4866 335 .remove = sl811_cs_detach,
22f3a8f5 336 .id_table = sl811_ids,
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337};
338
339/*====================================================================*/
340
341static int __init init_sl811_cs(void)
342{
343 return pcmcia_register_driver(&sl811_cs_driver);
344}
345module_init(init_sl811_cs);
346
347static void __exit exit_sl811_cs(void)
348{
349 pcmcia_unregister_driver(&sl811_cs_driver);
350}
351module_exit(exit_sl811_cs);
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