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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 | 69 | typedef struct local_info_t { |
fd238232 | 70 | struct pcmcia_device *p_dev; |
c6de2b64 DB |
71 | dev_node_t node; |
72 | } local_info_t; | |
73 | ||
fba395ee | 74 | static void sl811_cs_release(struct pcmcia_device * link); |
cc3b4866 | 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 | ||
fba395ee | 141 | static void sl811_cs_detach(struct pcmcia_device *link) |
c6de2b64 | 142 | { |
c6de2b64 DB |
143 | DBG(0, "sl811_cs_detach(0x%p)\n", link); |
144 | ||
cc3b4866 DB |
145 | link->state &= ~DEV_PRESENT; |
146 | if (link->state & DEV_CONFIG) | |
147 | sl811_cs_release(link); | |
c6de2b64 | 148 | |
c6de2b64 DB |
149 | /* This points to the parent local_info_t struct */ |
150 | kfree(link->priv); | |
151 | } | |
152 | ||
fba395ee | 153 | static void sl811_cs_release(struct pcmcia_device * link) |
c6de2b64 | 154 | { |
c6de2b64 DB |
155 | DBG(0, "sl811_cs_release(0x%p)\n", link); |
156 | ||
fba395ee | 157 | pcmcia_disable_device(link); |
c6de2b64 | 158 | platform_device_unregister(&platform_dev); |
c6de2b64 DB |
159 | } |
160 | ||
15b99ac1 | 161 | static int sl811_cs_config(struct pcmcia_device *link) |
c6de2b64 | 162 | { |
fba395ee | 163 | struct device *parent = &handle_to_dev(link); |
c6de2b64 DB |
164 | local_info_t *dev = link->priv; |
165 | tuple_t tuple; | |
166 | cisparse_t parse; | |
167 | int last_fn, last_ret; | |
168 | u_char buf[64]; | |
169 | config_info_t conf; | |
170 | cistpl_cftable_entry_t dflt = { 0 }; | |
171 | ||
172 | DBG(0, "sl811_cs_config(0x%p)\n", link); | |
173 | ||
174 | tuple.DesiredTuple = CISTPL_CONFIG; | |
175 | tuple.Attributes = 0; | |
176 | tuple.TupleData = buf; | |
177 | tuple.TupleDataMax = sizeof(buf); | |
178 | tuple.TupleOffset = 0; | |
fba395ee DB |
179 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
180 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); | |
181 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); | |
c6de2b64 DB |
182 | link->conf.ConfigBase = parse.config.base; |
183 | link->conf.Present = parse.config.rmask[0]; | |
184 | ||
185 | /* Configure card */ | |
186 | link->state |= DEV_CONFIG; | |
187 | ||
188 | /* Look up the current Vcc */ | |
189 | CS_CHECK(GetConfigurationInfo, | |
fba395ee | 190 | pcmcia_get_configuration_info(link, &conf)); |
c6de2b64 DB |
191 | |
192 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
fba395ee | 193 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
c6de2b64 DB |
194 | while (1) { |
195 | cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); | |
196 | ||
fba395ee DB |
197 | if (pcmcia_get_tuple_data(link, &tuple) != 0 |
198 | || pcmcia_parse_tuple(link, &tuple, &parse) | |
c6de2b64 DB |
199 | != 0) |
200 | goto next_entry; | |
201 | ||
202 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) { | |
203 | dflt = *cfg; | |
204 | } | |
205 | ||
206 | if (cfg->index == 0) | |
207 | goto next_entry; | |
208 | ||
209 | link->conf.ConfigIndex = cfg->index; | |
210 | ||
211 | /* Use power settings for Vcc and Vpp if present */ | |
212 | /* Note that the CIS values need to be rescaled */ | |
213 | if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
214 | if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 | |
215 | != conf.Vcc) | |
216 | goto next_entry; | |
217 | } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
218 | if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000 | |
219 | != conf.Vcc) | |
220 | goto next_entry; | |
221 | } | |
222 | ||
223 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
70294b46 | 224 | link->conf.Vpp = |
c6de2b64 DB |
225 | cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; |
226 | else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
70294b46 | 227 | link->conf.Vpp = |
c6de2b64 DB |
228 | dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; |
229 | ||
230 | /* we need an interrupt */ | |
231 | if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) | |
232 | link->conf.Attributes |= CONF_ENABLE_IRQ; | |
233 | ||
234 | /* IO window settings */ | |
235 | link->io.NumPorts1 = link->io.NumPorts2 = 0; | |
236 | if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { | |
237 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; | |
238 | ||
239 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
240 | link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
241 | link->io.BasePort1 = io->win[0].base; | |
242 | link->io.NumPorts1 = io->win[0].len; | |
243 | ||
fba395ee | 244 | if (pcmcia_request_io(link, &link->io) != 0) |
c6de2b64 DB |
245 | goto next_entry; |
246 | } | |
247 | break; | |
248 | ||
249 | next_entry: | |
fba395ee DB |
250 | pcmcia_disable_device(link); |
251 | last_ret = pcmcia_get_next_tuple(link, &tuple); | |
c6de2b64 DB |
252 | } |
253 | ||
254 | /* require an IRQ and two registers */ | |
255 | if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) | |
256 | goto cs_failed; | |
257 | if (link->conf.Attributes & CONF_ENABLE_IRQ) | |
258 | CS_CHECK(RequestIRQ, | |
fba395ee | 259 | pcmcia_request_irq(link, &link->irq)); |
c6de2b64 DB |
260 | else |
261 | goto cs_failed; | |
262 | ||
263 | CS_CHECK(RequestConfiguration, | |
fba395ee | 264 | pcmcia_request_configuration(link, &link->conf)); |
c6de2b64 DB |
265 | |
266 | sprintf(dev->node.dev_name, driver_name); | |
267 | dev->node.major = dev->node.minor = 0; | |
fd238232 | 268 | link->dev_node = &dev->node; |
c6de2b64 | 269 | |
70294b46 DB |
270 | printk(KERN_INFO "%s: index 0x%02x: ", |
271 | dev->node.dev_name, link->conf.ConfigIndex); | |
272 | if (link->conf.Vpp) | |
273 | printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); | |
c6de2b64 DB |
274 | printk(", irq %d", link->irq.AssignedIRQ); |
275 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, | |
276 | link->io.BasePort1+link->io.NumPorts1-1); | |
277 | printk("\n"); | |
278 | ||
279 | link->state &= ~DEV_CONFIG_PENDING; | |
280 | ||
281 | if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) | |
282 | < 0) { | |
283 | cs_failed: | |
284 | printk("sl811_cs_config failed\n"); | |
fba395ee | 285 | cs_error(link, last_fn, last_ret); |
c6de2b64 DB |
286 | sl811_cs_release(link); |
287 | link->state &= ~DEV_CONFIG_PENDING; | |
15b99ac1 | 288 | return -ENODEV; |
c6de2b64 | 289 | } |
15b99ac1 | 290 | return 0; |
c6de2b64 DB |
291 | } |
292 | ||
15b99ac1 | 293 | static int sl811_cs_probe(struct pcmcia_device *link) |
c6de2b64 DB |
294 | { |
295 | local_info_t *local; | |
c6de2b64 DB |
296 | |
297 | local = kmalloc(sizeof(local_info_t), GFP_KERNEL); | |
298 | if (!local) | |
f8cfa618 | 299 | return -ENOMEM; |
c6de2b64 | 300 | memset(local, 0, sizeof(local_info_t)); |
fba395ee | 301 | local->p_dev = link; |
c6de2b64 DB |
302 | link->priv = local; |
303 | ||
304 | /* Initialize */ | |
305 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
306 | link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; | |
c6de2b64 DB |
307 | link->irq.Handler = NULL; |
308 | ||
309 | link->conf.Attributes = 0; | |
c6de2b64 DB |
310 | link->conf.IntType = INT_MEMORY_AND_IO; |
311 | ||
f8cfa618 | 312 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; |
15b99ac1 | 313 | return sl811_cs_config(link); |
c6de2b64 DB |
314 | } |
315 | ||
22f3a8f5 DB |
316 | static struct pcmcia_device_id sl811_ids[] = { |
317 | PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ | |
318 | PCMCIA_DEVICE_NULL, | |
319 | }; | |
320 | MODULE_DEVICE_TABLE(pcmcia, sl811_ids); | |
321 | ||
c6de2b64 DB |
322 | static struct pcmcia_driver sl811_cs_driver = { |
323 | .owner = THIS_MODULE, | |
324 | .drv = { | |
325 | .name = (char *)driver_name, | |
326 | }, | |
15b99ac1 | 327 | .probe = sl811_cs_probe, |
cc3b4866 | 328 | .remove = sl811_cs_detach, |
22f3a8f5 | 329 | .id_table = sl811_ids, |
c6de2b64 DB |
330 | }; |
331 | ||
332 | /*====================================================================*/ | |
333 | ||
334 | static int __init init_sl811_cs(void) | |
335 | { | |
336 | return pcmcia_register_driver(&sl811_cs_driver); | |
337 | } | |
338 | module_init(init_sl811_cs); | |
339 | ||
340 | static void __exit exit_sl811_cs(void) | |
341 | { | |
342 | pcmcia_unregister_driver(&sl811_cs_driver); | |
343 | } | |
344 | module_exit(exit_sl811_cs); |