Pull trivial into release branch
[linux-2.6] / drivers / usb / host / sl811_cs.c
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>
22 #include <linux/platform_device.h>
23
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
32 MODULE_AUTHOR("Botond Botyanszki");
33 MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
34 MODULE_LICENSE("GPL");
35
36
37 /*====================================================================*/
38 /* MACROS                                                             */
39 /*====================================================================*/
40
41 #if defined(DEBUG) || defined(PCMCIA_DEBUG)
42
43 static int pc_debug = 0;
44 module_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
67 static const char driver_name[DEV_NAME_LEN]  = "sl811_cs";
68
69 typedef struct local_info_t {
70         struct pcmcia_device    *p_dev;
71         dev_node_t              node;
72 } local_info_t;
73
74 static void sl811_cs_release(struct pcmcia_device * link);
75
76 /*====================================================================*/
77
78 static void release_platform_dev(struct device * dev)
79 {
80         DBG(0, "sl811_cs platform_dev release\n");
81         dev->parent = NULL;
82 }
83
84 static struct sl811_platform_data platform_data = {
85         .potpg          = 100,
86         .power          = 50,           /* == 100mA */
87         // .reset       = ... FIXME:  invoke CF reset on the card
88 };
89
90 static 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
104 extern struct platform_driver sl811h_driver;
105
106 static 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
116 static 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
132          * initialized already because of the link order dependency created
133          * by referencing "sl811h_driver".
134          */
135         platform_dev.name = sl811h_driver.driver.name;
136         return platform_device_register(&platform_dev);
137 }
138
139 /*====================================================================*/
140
141 static void sl811_cs_detach(struct pcmcia_device *link)
142 {
143         DBG(0, "sl811_cs_detach(0x%p)\n", link);
144
145         sl811_cs_release(link);
146
147         /* This points to the parent local_info_t struct */
148         kfree(link->priv);
149 }
150
151 static void sl811_cs_release(struct pcmcia_device * link)
152 {
153         DBG(0, "sl811_cs_release(0x%p)\n", link);
154
155         pcmcia_disable_device(link);
156         platform_device_unregister(&platform_dev);
157 }
158
159 static int sl811_cs_config(struct pcmcia_device *link)
160 {
161         struct device           *parent = &handle_to_dev(link);
162         local_info_t            *dev = link->priv;
163         tuple_t                 tuple;
164         cisparse_t              parse;
165         int                     last_fn, last_ret;
166         u_char                  buf[64];
167         config_info_t           conf;
168         cistpl_cftable_entry_t  dflt = { 0 };
169
170         DBG(0, "sl811_cs_config(0x%p)\n", link);
171
172         tuple.DesiredTuple = CISTPL_CONFIG;
173         tuple.Attributes = 0;
174         tuple.TupleData = buf;
175         tuple.TupleDataMax = sizeof(buf);
176         tuple.TupleOffset = 0;
177         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
178         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
179         CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
180         link->conf.ConfigBase = parse.config.base;
181         link->conf.Present = parse.config.rmask[0];
182
183         /* Look up the current Vcc */
184         CS_CHECK(GetConfigurationInfo,
185                         pcmcia_get_configuration_info(link, &conf));
186
187         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
188         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
189         while (1) {
190                 cistpl_cftable_entry_t  *cfg = &(parse.cftable_entry);
191
192                 if (pcmcia_get_tuple_data(link, &tuple) != 0
193                                 || pcmcia_parse_tuple(link, &tuple, &parse)
194                                                 != 0)
195                         goto next_entry;
196
197                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
198                         dflt = *cfg;
199                 }
200
201                 if (cfg->index == 0)
202                         goto next_entry;
203
204                 link->conf.ConfigIndex = cfg->index;
205
206                 /* Use power settings for Vcc and Vpp if present */
207                 /*  Note that the CIS values need to be rescaled */
208                 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
209                         if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
210                                         != conf.Vcc)
211                                 goto next_entry;
212                 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
213                         if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
214                                         != conf.Vcc)
215                                 goto next_entry;
216                 }
217
218                 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
219                         link->conf.Vpp =
220                                 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
221                 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
222                         link->conf.Vpp =
223                                 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
224
225                 /* we need an interrupt */
226                 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
227                         link->conf.Attributes |= CONF_ENABLE_IRQ;
228
229                 /* IO window settings */
230                 link->io.NumPorts1 = link->io.NumPorts2 = 0;
231                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
232                         cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
233
234                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
235                         link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
236                         link->io.BasePort1 = io->win[0].base;
237                         link->io.NumPorts1 = io->win[0].len;
238
239                         if (pcmcia_request_io(link, &link->io) != 0)
240                                 goto next_entry;
241                 }
242                 break;
243
244 next_entry:
245                 pcmcia_disable_device(link);
246                 last_ret = pcmcia_get_next_tuple(link, &tuple);
247         }
248
249         /* require an IRQ and two registers */
250         if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
251                 goto cs_failed;
252         if (link->conf.Attributes & CONF_ENABLE_IRQ)
253                 CS_CHECK(RequestIRQ,
254                         pcmcia_request_irq(link, &link->irq));
255         else
256                 goto cs_failed;
257
258         CS_CHECK(RequestConfiguration,
259                 pcmcia_request_configuration(link, &link->conf));
260
261         sprintf(dev->node.dev_name, driver_name);
262         dev->node.major = dev->node.minor = 0;
263         link->dev_node = &dev->node;
264
265         printk(KERN_INFO "%s: index 0x%02x: ",
266                dev->node.dev_name, link->conf.ConfigIndex);
267         if (link->conf.Vpp)
268                 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
269         printk(", irq %d", link->irq.AssignedIRQ);
270         printk(", io 0x%04x-0x%04x", link->io.BasePort1,
271                link->io.BasePort1+link->io.NumPorts1-1);
272         printk("\n");
273
274         if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
275                         < 0) {
276 cs_failed:
277                 printk("sl811_cs_config failed\n");
278                 cs_error(link, last_fn, last_ret);
279                 sl811_cs_release(link);
280                 return  -ENODEV;
281         }
282         return 0;
283 }
284
285 static int sl811_cs_probe(struct pcmcia_device *link)
286 {
287         local_info_t *local;
288
289         local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
290         if (!local)
291                 return -ENOMEM;
292         memset(local, 0, sizeof(local_info_t));
293         local->p_dev = link;
294         link->priv = local;
295
296         /* Initialize */
297         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
298         link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
299         link->irq.Handler = NULL;
300
301         link->conf.Attributes = 0;
302         link->conf.IntType = INT_MEMORY_AND_IO;
303
304         return sl811_cs_config(link);
305 }
306
307 static struct pcmcia_device_id sl811_ids[] = {
308         PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
309         PCMCIA_DEVICE_NULL,
310 };
311 MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
312
313 static struct pcmcia_driver sl811_cs_driver = {
314         .owner          = THIS_MODULE,
315         .drv            = {
316                 .name   = (char *)driver_name,
317         },
318         .probe          = sl811_cs_probe,
319         .remove         = sl811_cs_detach,
320         .id_table       = sl811_ids,
321 };
322
323 /*====================================================================*/
324
325 static int __init init_sl811_cs(void)
326 {
327         return pcmcia_register_driver(&sl811_cs_driver);
328 }
329 module_init(init_sl811_cs);
330
331 static void __exit exit_sl811_cs(void)
332 {
333         pcmcia_unregister_driver(&sl811_cs_driver);
334 }
335 module_exit(exit_sl811_cs);