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/ptrace.h>
17 #include <linux/slab.h>
18 #include <linux/string.h>
19 #include <linux/timer.h>
20 #include <linux/ioport.h>
21 #include <linux/platform_device.h>
23 #include <pcmcia/cs_types.h>
24 #include <pcmcia/cs.h>
25 #include <pcmcia/cistpl.h>
26 #include <pcmcia/cisreg.h>
27 #include <pcmcia/ds.h>
29 #include <linux/usb/sl811.h>
31 MODULE_AUTHOR("Botond Botyanszki");
32 MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
33 MODULE_LICENSE("GPL");
36 /*====================================================================*/
38 /*====================================================================*/
40 #if defined(DEBUG) || defined(PCMCIA_DEBUG)
42 static int pc_debug = 0;
43 module_param(pc_debug, int, 0644);
45 #define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
48 #define DBG(n, args...) do{}while(0)
49 #endif /* no debugging */
51 #define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
53 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
55 #define CS_CHECK(fn, ret) \
58 if ((last_ret = (ret)) != 0) \
62 /*====================================================================*/
64 /*====================================================================*/
66 static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
68 typedef struct local_info_t {
69 struct pcmcia_device *p_dev;
73 static void sl811_cs_release(struct pcmcia_device * link);
75 /*====================================================================*/
77 static void release_platform_dev(struct device * dev)
79 DBG(0, "sl811_cs platform_dev release\n");
83 static struct sl811_platform_data platform_data = {
85 .power = 50, /* == 100mA */
86 // .reset = ... FIXME: invoke CF reset on the card
89 static struct resource resources[] = {
91 .flags = IORESOURCE_IRQ,
95 .flags = IORESOURCE_IO,
99 .flags = IORESOURCE_IO,
103 extern struct platform_driver sl811h_driver;
105 static struct platform_device platform_dev = {
108 .platform_data = &platform_data,
109 .release = release_platform_dev,
111 .resource = resources,
112 .num_resources = ARRAY_SIZE(resources),
115 static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
117 if (platform_dev.dev.parent)
119 platform_dev.dev.parent = parent;
121 /* finish seting up the platform device */
122 resources[0].start = irq;
124 resources[1].start = base_addr;
125 resources[1].end = base_addr;
127 resources[2].start = base_addr + 1;
128 resources[2].end = base_addr + 1;
130 /* The driver core will probe for us. We know sl811-hcd has been
131 * initialized already because of the link order dependency created
132 * by referencing "sl811h_driver".
134 platform_dev.name = sl811h_driver.driver.name;
135 return platform_device_register(&platform_dev);
138 /*====================================================================*/
140 static void sl811_cs_detach(struct pcmcia_device *link)
142 DBG(0, "sl811_cs_detach(0x%p)\n", link);
144 sl811_cs_release(link);
146 /* This points to the parent local_info_t struct */
150 static void sl811_cs_release(struct pcmcia_device * link)
152 DBG(0, "sl811_cs_release(0x%p)\n", link);
154 pcmcia_disable_device(link);
155 platform_device_unregister(&platform_dev);
158 struct sl811_css_cfg {
162 static int sl811_cs_config_check(struct pcmcia_device *p_dev,
163 cistpl_cftable_entry_t *cfg,
164 cistpl_cftable_entry_t *dflt,
167 struct sl811_css_cfg *cfg_mem = priv_data;
172 /* Use power settings for Vcc and Vpp if present */
173 /* Note that the CIS values need to be rescaled */
174 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
175 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 !=
178 } else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) {
179 if (dflt->vcc.param[CISTPL_POWER_VNOM]/10000
180 != cfg_mem->conf.Vcc)
184 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
186 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
187 else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
189 dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
191 /* we need an interrupt */
192 if (cfg->irq.IRQInfo1 || dflt->irq.IRQInfo1)
193 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
195 /* IO window settings */
196 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
197 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
198 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
200 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
201 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
202 p_dev->io.BasePort1 = io->win[0].base;
203 p_dev->io.NumPorts1 = io->win[0].len;
205 return pcmcia_request_io(p_dev, &p_dev->io);
207 pcmcia_disable_device(p_dev);
212 static int sl811_cs_config(struct pcmcia_device *link)
214 struct device *parent = &handle_to_dev(link);
215 local_info_t *dev = link->priv;
216 int last_fn, last_ret;
217 struct sl811_css_cfg *cfg_mem;
219 DBG(0, "sl811_cs_config(0x%p)\n", link);
221 cfg_mem = kzalloc(sizeof(struct sl811_css_cfg), GFP_KERNEL);
225 /* Look up the current Vcc */
226 CS_CHECK(GetConfigurationInfo,
227 pcmcia_get_configuration_info(link, &cfg_mem->conf));
229 if (pcmcia_loop_config(link, sl811_cs_config_check, cfg_mem))
232 /* require an IRQ and two registers */
233 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
235 if (link->conf.Attributes & CONF_ENABLE_IRQ)
237 pcmcia_request_irq(link, &link->irq));
241 CS_CHECK(RequestConfiguration,
242 pcmcia_request_configuration(link, &link->conf));
244 sprintf(dev->node.dev_name, driver_name);
245 dev->node.major = dev->node.minor = 0;
246 link->dev_node = &dev->node;
248 printk(KERN_INFO "%s: index 0x%02x: ",
249 dev->node.dev_name, link->conf.ConfigIndex);
251 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
252 printk(", irq %d", link->irq.AssignedIRQ);
253 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
254 link->io.BasePort1+link->io.NumPorts1-1);
257 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
260 printk("sl811_cs_config failed\n");
261 cs_error(link, last_fn, last_ret);
262 sl811_cs_release(link);
270 static int sl811_cs_probe(struct pcmcia_device *link)
274 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
281 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
282 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
283 link->irq.Handler = NULL;
285 link->conf.Attributes = 0;
286 link->conf.IntType = INT_MEMORY_AND_IO;
288 return sl811_cs_config(link);
291 static struct pcmcia_device_id sl811_ids[] = {
292 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
295 MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
297 static struct pcmcia_driver sl811_cs_driver = {
298 .owner = THIS_MODULE,
300 .name = (char *)driver_name,
302 .probe = sl811_cs_probe,
303 .remove = sl811_cs_detach,
304 .id_table = sl811_ids,
307 /*====================================================================*/
309 static int __init init_sl811_cs(void)
311 return pcmcia_register_driver(&sl811_cs_driver);
313 module_init(init_sl811_cs);
315 static void __exit exit_sl811_cs(void)
317 pcmcia_unregister_driver(&sl811_cs_driver);
319 module_exit(exit_sl811_cs);