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c6de2b64 DB |
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 | |
c6de2b64 DB |
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 | ||
c9a50cc9 | 41 | #if defined(DEBUG) || defined(PCMCIA_DEBUG) |
c6de2b64 DB |
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 | ||
c6de2b64 DB |
69 | typedef struct local_info_t { |
70 | dev_link_t link; | |
71 | dev_node_t node; | |
72 | } local_info_t; | |
73 | ||
cc3b4866 DB |
74 | static void sl811_cs_release(dev_link_t * link); |
75 | ||
c6de2b64 DB |
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 | ||
a0c53f1d | 104 | extern struct platform_driver sl811h_driver; |
c6de2b64 DB |
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 | |
c9a50cc9 DB |
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; |
c6de2b64 DB |
136 | return platform_device_register(&platform_dev); |
137 | } | |
138 | ||
139 | /*====================================================================*/ | |
140 | ||
cc3b4866 | 141 | static void sl811_cs_detach(struct pcmcia_device *p_dev) |
c6de2b64 | 142 | { |
cc3b4866 | 143 | dev_link_t *link = dev_to_instance(p_dev); |
c6de2b64 DB |
144 | |
145 | DBG(0, "sl811_cs_detach(0x%p)\n", link); | |
146 | ||
cc3b4866 DB |
147 | link->state &= ~DEV_PRESENT; |
148 | if (link->state & DEV_CONFIG) | |
149 | sl811_cs_release(link); | |
c6de2b64 | 150 | |
c6de2b64 DB |
151 | /* This points to the parent local_info_t struct */ |
152 | kfree(link->priv); | |
153 | } | |
154 | ||
155 | static void sl811_cs_release(dev_link_t * link) | |
156 | { | |
c6de2b64 DB |
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); |
c6de2b64 DB |
161 | } |
162 | ||
163 | static 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)); | |
c6de2b64 DB |
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 = |
c6de2b64 DB |
228 | cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; |
229 | else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
70294b46 | 230 | link->conf.Vpp = |
c6de2b64 DB |
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 | ||
252 | next_entry: | |
50db3fdb | 253 | pcmcia_disable_device(handle); |
c6de2b64 DB |
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 | ||
70294b46 DB |
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); | |
c6de2b64 DB |
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) { | |
286 | cs_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 | 294 | static int sl811_cs_attach(struct pcmcia_device *p_dev) |
c6de2b64 DB |
295 | { |
296 | local_info_t *local; | |
297 | dev_link_t *link; | |
c6de2b64 DB |
298 | |
299 | local = kmalloc(sizeof(local_info_t), GFP_KERNEL); | |
300 | if (!local) | |
f8cfa618 | 301 | return -ENOMEM; |
c6de2b64 DB |
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; | |
c6de2b64 DB |
309 | link->irq.Handler = NULL; |
310 | ||
311 | link->conf.Attributes = 0; | |
c6de2b64 DB |
312 | link->conf.IntType = INT_MEMORY_AND_IO; |
313 | ||
f8cfa618 DB |
314 | link->handle = p_dev; |
315 | p_dev->instance = link; | |
c6de2b64 | 316 | |
f8cfa618 DB |
317 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; |
318 | sl811_cs_config(link); | |
319 | ||
320 | return 0; | |
c6de2b64 DB |
321 | } |
322 | ||
22f3a8f5 DB |
323 | static struct pcmcia_device_id sl811_ids[] = { |
324 | PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ | |
325 | PCMCIA_DEVICE_NULL, | |
326 | }; | |
327 | MODULE_DEVICE_TABLE(pcmcia, sl811_ids); | |
328 | ||
c6de2b64 DB |
329 | static 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, |
c6de2b64 DB |
337 | }; |
338 | ||
339 | /*====================================================================*/ | |
340 | ||
341 | static int __init init_sl811_cs(void) | |
342 | { | |
343 | return pcmcia_register_driver(&sl811_cs_driver); | |
344 | } | |
345 | module_init(init_sl811_cs); | |
346 | ||
347 | static void __exit exit_sl811_cs(void) | |
348 | { | |
349 | pcmcia_unregister_driver(&sl811_cs_driver); | |
350 | } | |
351 | module_exit(exit_sl811_cs); |