2 * PCMCIA driver for SL811HS (as found in REX-CFU1U)
4 * Author: Yukio Yamamoto
6 * Port to sl811-hcd and 2.6.x by
7 * Botond Botyanszki <boti@rocketmail.com>
10 * Last update: 2005-05-12
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>
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>
30 #include <linux/usb_sl811.h>
32 MODULE_AUTHOR("Botond Botyanszki");
33 MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
34 MODULE_LICENSE("GPL");
37 /*====================================================================*/
39 /*====================================================================*/
41 #if defined(DEBUG) || defined(PCMCIA_DEBUG)
43 static int pc_debug = 0;
44 module_param(pc_debug, int, 0644);
46 #define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
49 #define DBG(n, args...) do{}while(0)
50 #endif /* no debugging */
52 #define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
54 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
56 #define CS_CHECK(fn, ret) \
59 if ((last_ret = (ret)) != 0) \
63 /*====================================================================*/
65 /*====================================================================*/
67 static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
69 static dev_link_t *dev_list = NULL;
71 typedef struct local_info_t {
76 static void sl811_cs_release(dev_link_t * link);
78 /*====================================================================*/
80 static void release_platform_dev(struct device * dev)
82 DBG(0, "sl811_cs platform_dev release\n");
86 static struct sl811_platform_data platform_data = {
88 .power = 50, /* == 100mA */
89 // .reset = ... FIXME: invoke CF reset on the card
92 static struct resource resources[] = {
94 .flags = IORESOURCE_IRQ,
98 .flags = IORESOURCE_IO,
102 .flags = IORESOURCE_IO,
106 extern struct device_driver sl811h_driver;
108 static struct platform_device platform_dev = {
111 .platform_data = &platform_data,
112 .release = release_platform_dev,
114 .resource = resources,
115 .num_resources = ARRAY_SIZE(resources),
118 static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
120 if (platform_dev.dev.parent)
122 platform_dev.dev.parent = parent;
124 /* finish seting up the platform device */
125 resources[0].start = irq;
127 resources[1].start = base_addr;
128 resources[1].end = base_addr;
130 resources[2].start = base_addr + 1;
131 resources[2].end = base_addr + 1;
133 /* The driver core will probe for us. We know sl811-hcd has been
134 * initialized already because of the link order dependency created
135 * by referencing "sl811h_driver".
137 platform_dev.name = sl811h_driver.name;
138 return platform_device_register(&platform_dev);
141 /*====================================================================*/
143 static void sl811_cs_detach(struct pcmcia_device *p_dev)
145 dev_link_t *link = dev_to_instance(p_dev);
148 DBG(0, "sl811_cs_detach(0x%p)\n", link);
150 /* Locate device structure */
151 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) {
158 link->state &= ~DEV_PRESENT;
159 if (link->state & DEV_CONFIG)
160 sl811_cs_release(link);
162 /* Unlink device structure, and free it */
164 /* This points to the parent local_info_t struct */
168 static void sl811_cs_release(dev_link_t * link)
171 DBG(0, "sl811_cs_release(0x%p)\n", link);
173 /* Unlink the device chain */
176 platform_device_unregister(&platform_dev);
177 pcmcia_release_configuration(link->handle);
178 if (link->io.NumPorts1)
179 pcmcia_release_io(link->handle, &link->io);
180 if (link->irq.AssignedIRQ)
181 pcmcia_release_irq(link->handle, &link->irq);
182 link->state &= ~DEV_CONFIG;
185 static void sl811_cs_config(dev_link_t *link)
187 client_handle_t handle = link->handle;
188 struct device *parent = &handle_to_dev(handle);
189 local_info_t *dev = link->priv;
192 int last_fn, last_ret;
195 cistpl_cftable_entry_t dflt = { 0 };
197 DBG(0, "sl811_cs_config(0x%p)\n", link);
199 tuple.DesiredTuple = CISTPL_CONFIG;
200 tuple.Attributes = 0;
201 tuple.TupleData = buf;
202 tuple.TupleDataMax = sizeof(buf);
203 tuple.TupleOffset = 0;
204 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
205 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
206 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
207 link->conf.ConfigBase = parse.config.base;
208 link->conf.Present = parse.config.rmask[0];
211 link->state |= DEV_CONFIG;
213 /* Look up the current Vcc */
214 CS_CHECK(GetConfigurationInfo,
215 pcmcia_get_configuration_info(handle, &conf));
216 link->conf.Vcc = conf.Vcc;
218 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
219 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
221 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
223 if (pcmcia_get_tuple_data(handle, &tuple) != 0
224 || pcmcia_parse_tuple(handle, &tuple, &parse)
228 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
235 link->conf.ConfigIndex = cfg->index;
237 /* Use power settings for Vcc and Vpp if present */
238 /* Note that the CIS values need to be rescaled */
239 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
240 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
243 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
244 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
249 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
250 link->conf.Vpp1 = link->conf.Vpp2 =
251 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
252 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
253 link->conf.Vpp1 = link->conf.Vpp2 =
254 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
256 /* we need an interrupt */
257 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
258 link->conf.Attributes |= CONF_ENABLE_IRQ;
260 /* IO window settings */
261 link->io.NumPorts1 = link->io.NumPorts2 = 0;
262 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
263 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
265 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
266 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
267 link->io.BasePort1 = io->win[0].base;
268 link->io.NumPorts1 = io->win[0].len;
270 if (pcmcia_request_io(link->handle, &link->io) != 0)
276 if (link->io.NumPorts1)
277 pcmcia_release_io(link->handle, &link->io);
278 last_ret = pcmcia_get_next_tuple(handle, &tuple);
281 /* require an IRQ and two registers */
282 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
284 if (link->conf.Attributes & CONF_ENABLE_IRQ)
286 pcmcia_request_irq(link->handle, &link->irq));
290 CS_CHECK(RequestConfiguration,
291 pcmcia_request_configuration(link->handle, &link->conf));
293 sprintf(dev->node.dev_name, driver_name);
294 dev->node.major = dev->node.minor = 0;
295 link->dev = &dev->node;
297 printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
298 dev->node.dev_name, link->conf.ConfigIndex,
299 link->conf.Vcc/10, link->conf.Vcc%10);
301 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
302 printk(", irq %d", link->irq.AssignedIRQ);
303 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
304 link->io.BasePort1+link->io.NumPorts1-1);
307 link->state &= ~DEV_CONFIG_PENDING;
309 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
312 printk("sl811_cs_config failed\n");
313 cs_error(link->handle, last_fn, last_ret);
314 sl811_cs_release(link);
315 link->state &= ~DEV_CONFIG_PENDING;
319 static int sl811_suspend(struct pcmcia_device *dev)
321 dev_link_t *link = dev_to_instance(dev);
323 link->state |= DEV_SUSPEND;
324 if (link->state & DEV_CONFIG)
325 pcmcia_release_configuration(link->handle);
330 static int sl811_resume(struct pcmcia_device *dev)
332 dev_link_t *link = dev_to_instance(dev);
334 link->state &= ~DEV_SUSPEND;
335 if (link->state & DEV_CONFIG)
336 pcmcia_request_configuration(link->handle, &link->conf);
342 sl811_cs_event(event_t event, int priority, event_callback_args_t *args)
344 dev_link_t *link = args->client_data;
346 DBG(1, "sl811_cs_event(0x%06x)\n", event);
349 case CS_EVENT_CARD_INSERTION:
350 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
351 sl811_cs_config(link);
357 static dev_link_t *sl811_cs_attach(void)
361 client_reg_t client_reg;
364 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
367 memset(local, 0, sizeof(local_info_t));
372 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
373 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
374 link->irq.Handler = NULL;
376 link->conf.Attributes = 0;
378 link->conf.IntType = INT_MEMORY_AND_IO;
380 /* Register with Card Services */
381 link->next = dev_list;
383 client_reg.dev_info = (dev_info_t *) &driver_name;
384 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
385 client_reg.Version = 0x0210;
386 client_reg.event_callback_args.client_data = link;
387 ret = pcmcia_register_client(&link->handle, &client_reg);
388 if (ret != CS_SUCCESS) {
389 cs_error(link->handle, RegisterClient, ret);
390 sl811_cs_detach(link->handle);
397 static struct pcmcia_device_id sl811_ids[] = {
398 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
401 MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
403 static struct pcmcia_driver sl811_cs_driver = {
404 .owner = THIS_MODULE,
406 .name = (char *)driver_name,
408 .attach = sl811_cs_attach,
409 .event = sl811_cs_event,
410 .remove = sl811_cs_detach,
411 .id_table = sl811_ids,
412 .suspend = sl811_suspend,
413 .resume = sl811_resume,
416 /*====================================================================*/
418 static int __init init_sl811_cs(void)
420 return pcmcia_register_driver(&sl811_cs_driver);
422 module_init(init_sl811_cs);
424 static void __exit exit_sl811_cs(void)
426 pcmcia_unregister_driver(&sl811_cs_driver);
428 module_exit(exit_sl811_cs);