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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> | |
c6de2b64 DB |
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> | |
d052d1be | 21 | #include <linux/platform_device.h> |
c6de2b64 | 22 | |
c6de2b64 DB |
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> | |
28 | ||
325a4af6 | 29 | #include <linux/usb/sl811.h> |
c6de2b64 DB |
30 | |
31 | MODULE_AUTHOR("Botond Botyanszki"); | |
32 | MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6"); | |
33 | MODULE_LICENSE("GPL"); | |
34 | ||
35 | ||
36 | /*====================================================================*/ | |
37 | /* MACROS */ | |
38 | /*====================================================================*/ | |
39 | ||
c9a50cc9 | 40 | #if defined(DEBUG) || defined(PCMCIA_DEBUG) |
c6de2b64 DB |
41 | |
42 | static int pc_debug = 0; | |
43 | module_param(pc_debug, int, 0644); | |
44 | ||
45 | #define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args) | |
46 | ||
47 | #else | |
48 | #define DBG(n, args...) do{}while(0) | |
49 | #endif /* no debugging */ | |
50 | ||
51 | #define INFO(args...) printk(KERN_INFO "sl811_cs: " args) | |
52 | ||
53 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) | |
54 | ||
55 | #define CS_CHECK(fn, ret) \ | |
56 | do { \ | |
57 | last_fn = (fn); \ | |
58 | if ((last_ret = (ret)) != 0) \ | |
59 | goto cs_failed; \ | |
60 | } while (0) | |
61 | ||
62 | /*====================================================================*/ | |
63 | /* VARIABLES */ | |
64 | /*====================================================================*/ | |
65 | ||
66 | static const char driver_name[DEV_NAME_LEN] = "sl811_cs"; | |
67 | ||
c6de2b64 | 68 | typedef struct local_info_t { |
fd238232 | 69 | struct pcmcia_device *p_dev; |
c6de2b64 DB |
70 | dev_node_t node; |
71 | } local_info_t; | |
72 | ||
fba395ee | 73 | static void sl811_cs_release(struct pcmcia_device * link); |
cc3b4866 | 74 | |
c6de2b64 DB |
75 | /*====================================================================*/ |
76 | ||
77 | static void release_platform_dev(struct device * dev) | |
78 | { | |
79 | DBG(0, "sl811_cs platform_dev release\n"); | |
80 | dev->parent = NULL; | |
81 | } | |
82 | ||
83 | static struct sl811_platform_data platform_data = { | |
84 | .potpg = 100, | |
85 | .power = 50, /* == 100mA */ | |
86 | // .reset = ... FIXME: invoke CF reset on the card | |
87 | }; | |
88 | ||
89 | static struct resource resources[] = { | |
90 | [0] = { | |
91 | .flags = IORESOURCE_IRQ, | |
92 | }, | |
93 | [1] = { | |
94 | // .name = "address", | |
95 | .flags = IORESOURCE_IO, | |
96 | }, | |
97 | [2] = { | |
98 | // .name = "data", | |
99 | .flags = IORESOURCE_IO, | |
100 | }, | |
101 | }; | |
102 | ||
a0c53f1d | 103 | extern struct platform_driver sl811h_driver; |
c6de2b64 DB |
104 | |
105 | static struct platform_device platform_dev = { | |
106 | .id = -1, | |
107 | .dev = { | |
108 | .platform_data = &platform_data, | |
109 | .release = release_platform_dev, | |
110 | }, | |
111 | .resource = resources, | |
112 | .num_resources = ARRAY_SIZE(resources), | |
113 | }; | |
114 | ||
115 | static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq) | |
116 | { | |
117 | if (platform_dev.dev.parent) | |
118 | return -EBUSY; | |
119 | platform_dev.dev.parent = parent; | |
120 | ||
121 | /* finish seting up the platform device */ | |
122 | resources[0].start = irq; | |
123 | ||
124 | resources[1].start = base_addr; | |
125 | resources[1].end = base_addr; | |
126 | ||
127 | resources[2].start = base_addr + 1; | |
128 | resources[2].end = base_addr + 1; | |
129 | ||
130 | /* The driver core will probe for us. We know sl811-hcd has been | |
c9a50cc9 DB |
131 | * initialized already because of the link order dependency created |
132 | * by referencing "sl811h_driver". | |
c6de2b64 | 133 | */ |
a0c53f1d | 134 | platform_dev.name = sl811h_driver.driver.name; |
c6de2b64 DB |
135 | return platform_device_register(&platform_dev); |
136 | } | |
137 | ||
138 | /*====================================================================*/ | |
139 | ||
fba395ee | 140 | static void sl811_cs_detach(struct pcmcia_device *link) |
c6de2b64 | 141 | { |
c6de2b64 DB |
142 | DBG(0, "sl811_cs_detach(0x%p)\n", link); |
143 | ||
e2d40963 | 144 | sl811_cs_release(link); |
c6de2b64 | 145 | |
c6de2b64 DB |
146 | /* This points to the parent local_info_t struct */ |
147 | kfree(link->priv); | |
148 | } | |
149 | ||
fba395ee | 150 | static void sl811_cs_release(struct pcmcia_device * link) |
c6de2b64 | 151 | { |
c6de2b64 DB |
152 | DBG(0, "sl811_cs_release(0x%p)\n", link); |
153 | ||
fba395ee | 154 | pcmcia_disable_device(link); |
c6de2b64 | 155 | platform_device_unregister(&platform_dev); |
c6de2b64 DB |
156 | } |
157 | ||
84e2d340 DB |
158 | struct sl811_css_cfg { |
159 | cistpl_cftable_entry_t dflt; | |
160 | config_info_t conf; | |
161 | }; | |
162 | ||
163 | static int sl811_cs_config_check(struct pcmcia_device *p_dev, | |
164 | cistpl_cftable_entry_t *cfg, | |
165 | void *priv_data) | |
166 | { | |
167 | struct sl811_css_cfg *cfg_mem = priv_data; | |
168 | ||
169 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
170 | memcpy(&cfg_mem->dflt, cfg, sizeof(cistpl_cftable_entry_t)); | |
171 | ||
172 | if (cfg->index == 0) | |
173 | return -ENODEV; | |
174 | ||
84e2d340 DB |
175 | /* Use power settings for Vcc and Vpp if present */ |
176 | /* Note that the CIS values need to be rescaled */ | |
177 | if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
178 | if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 != | |
179 | cfg_mem->conf.Vcc) | |
180 | return -ENODEV; | |
181 | } else if (cfg_mem->dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
182 | if (cfg_mem->dflt.vcc.param[CISTPL_POWER_VNOM]/10000 | |
183 | != cfg_mem->conf.Vcc) | |
184 | return -ENODEV; | |
185 | } | |
186 | ||
187 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
188 | p_dev->conf.Vpp = | |
189 | cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; | |
190 | else if (cfg_mem->dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
191 | p_dev->conf.Vpp = | |
192 | cfg_mem->dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; | |
193 | ||
194 | /* we need an interrupt */ | |
195 | if (cfg->irq.IRQInfo1 || cfg_mem->dflt.irq.IRQInfo1) | |
196 | p_dev->conf.Attributes |= CONF_ENABLE_IRQ; | |
197 | ||
198 | /* IO window settings */ | |
199 | p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0; | |
200 | if ((cfg->io.nwin > 0) || (cfg_mem->dflt.io.nwin > 0)) { | |
201 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &cfg_mem->dflt.io; | |
202 | ||
203 | p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
204 | p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
205 | p_dev->io.BasePort1 = io->win[0].base; | |
206 | p_dev->io.NumPorts1 = io->win[0].len; | |
207 | ||
208 | return pcmcia_request_io(p_dev, &p_dev->io); | |
209 | } | |
210 | pcmcia_disable_device(p_dev); | |
211 | return -ENODEV; | |
212 | } | |
213 | ||
214 | ||
15b99ac1 | 215 | static int sl811_cs_config(struct pcmcia_device *link) |
c6de2b64 | 216 | { |
fba395ee | 217 | struct device *parent = &handle_to_dev(link); |
c6de2b64 | 218 | local_info_t *dev = link->priv; |
c6de2b64 | 219 | int last_fn, last_ret; |
84e2d340 | 220 | struct sl811_css_cfg *cfg_mem; |
c6de2b64 DB |
221 | |
222 | DBG(0, "sl811_cs_config(0x%p)\n", link); | |
223 | ||
84e2d340 DB |
224 | cfg_mem = kzalloc(sizeof(struct sl811_css_cfg), GFP_KERNEL); |
225 | if (!cfg_mem) | |
226 | return -ENOMEM; | |
227 | ||
c6de2b64 DB |
228 | /* Look up the current Vcc */ |
229 | CS_CHECK(GetConfigurationInfo, | |
84e2d340 | 230 | pcmcia_get_configuration_info(link, &cfg_mem->conf)); |
c6de2b64 | 231 | |
84e2d340 DB |
232 | if (pcmcia_loop_config(link, sl811_cs_config_check, cfg_mem)) |
233 | return -ENODEV; | |
c6de2b64 DB |
234 | |
235 | /* require an IRQ and two registers */ | |
236 | if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) | |
237 | goto cs_failed; | |
238 | if (link->conf.Attributes & CONF_ENABLE_IRQ) | |
239 | CS_CHECK(RequestIRQ, | |
fba395ee | 240 | pcmcia_request_irq(link, &link->irq)); |
c6de2b64 DB |
241 | else |
242 | goto cs_failed; | |
243 | ||
244 | CS_CHECK(RequestConfiguration, | |
fba395ee | 245 | pcmcia_request_configuration(link, &link->conf)); |
c6de2b64 DB |
246 | |
247 | sprintf(dev->node.dev_name, driver_name); | |
248 | dev->node.major = dev->node.minor = 0; | |
fd238232 | 249 | link->dev_node = &dev->node; |
c6de2b64 | 250 | |
70294b46 DB |
251 | printk(KERN_INFO "%s: index 0x%02x: ", |
252 | dev->node.dev_name, link->conf.ConfigIndex); | |
253 | if (link->conf.Vpp) | |
254 | printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); | |
c6de2b64 DB |
255 | printk(", irq %d", link->irq.AssignedIRQ); |
256 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, | |
257 | link->io.BasePort1+link->io.NumPorts1-1); | |
258 | printk("\n"); | |
259 | ||
c6de2b64 DB |
260 | if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) |
261 | < 0) { | |
262 | cs_failed: | |
263 | printk("sl811_cs_config failed\n"); | |
fba395ee | 264 | cs_error(link, last_fn, last_ret); |
c6de2b64 | 265 | sl811_cs_release(link); |
84e2d340 | 266 | kfree(cfg_mem); |
15b99ac1 | 267 | return -ENODEV; |
c6de2b64 | 268 | } |
84e2d340 | 269 | kfree(cfg_mem); |
15b99ac1 | 270 | return 0; |
c6de2b64 DB |
271 | } |
272 | ||
15b99ac1 | 273 | static int sl811_cs_probe(struct pcmcia_device *link) |
c6de2b64 DB |
274 | { |
275 | local_info_t *local; | |
c6de2b64 | 276 | |
dd00cc48 | 277 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
c6de2b64 | 278 | if (!local) |
f8cfa618 | 279 | return -ENOMEM; |
fba395ee | 280 | local->p_dev = link; |
c6de2b64 DB |
281 | link->priv = local; |
282 | ||
283 | /* Initialize */ | |
284 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
285 | link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; | |
c6de2b64 DB |
286 | link->irq.Handler = NULL; |
287 | ||
288 | link->conf.Attributes = 0; | |
c6de2b64 DB |
289 | link->conf.IntType = INT_MEMORY_AND_IO; |
290 | ||
15b99ac1 | 291 | return sl811_cs_config(link); |
c6de2b64 DB |
292 | } |
293 | ||
22f3a8f5 DB |
294 | static struct pcmcia_device_id sl811_ids[] = { |
295 | PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ | |
296 | PCMCIA_DEVICE_NULL, | |
297 | }; | |
298 | MODULE_DEVICE_TABLE(pcmcia, sl811_ids); | |
299 | ||
c6de2b64 DB |
300 | static struct pcmcia_driver sl811_cs_driver = { |
301 | .owner = THIS_MODULE, | |
302 | .drv = { | |
303 | .name = (char *)driver_name, | |
304 | }, | |
15b99ac1 | 305 | .probe = sl811_cs_probe, |
cc3b4866 | 306 | .remove = sl811_cs_detach, |
22f3a8f5 | 307 | .id_table = sl811_ids, |
c6de2b64 DB |
308 | }; |
309 | ||
310 | /*====================================================================*/ | |
311 | ||
312 | static int __init init_sl811_cs(void) | |
313 | { | |
314 | return pcmcia_register_driver(&sl811_cs_driver); | |
315 | } | |
316 | module_init(init_sl811_cs); | |
317 | ||
318 | static void __exit exit_sl811_cs(void) | |
319 | { | |
320 | pcmcia_unregister_driver(&sl811_cs_driver); | |
321 | } | |
322 | module_exit(exit_sl811_cs); |