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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 | ||
d39bd564 DB |
115 | static int sl811_hc_init(struct device *parent, resource_size_t base_addr, |
116 | int irq) | |
c6de2b64 DB |
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 | ||
e2d40963 | 145 | sl811_cs_release(link); |
c6de2b64 | 146 | |
c6de2b64 DB |
147 | /* This points to the parent local_info_t struct */ |
148 | kfree(link->priv); | |
149 | } | |
150 | ||
fba395ee | 151 | static void sl811_cs_release(struct pcmcia_device * link) |
c6de2b64 | 152 | { |
c6de2b64 DB |
153 | DBG(0, "sl811_cs_release(0x%p)\n", link); |
154 | ||
fba395ee | 155 | pcmcia_disable_device(link); |
c6de2b64 | 156 | platform_device_unregister(&platform_dev); |
c6de2b64 DB |
157 | } |
158 | ||
84e2d340 DB |
159 | static int sl811_cs_config_check(struct pcmcia_device *p_dev, |
160 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 161 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 162 | unsigned int vcc, |
84e2d340 DB |
163 | void *priv_data) |
164 | { | |
84e2d340 DB |
165 | if (cfg->index == 0) |
166 | return -ENODEV; | |
167 | ||
84e2d340 DB |
168 | /* Use power settings for Vcc and Vpp if present */ |
169 | /* Note that the CIS values need to be rescaled */ | |
170 | if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
ad913c11 | 171 | if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 != vcc) |
84e2d340 | 172 | return -ENODEV; |
8e2fc39d | 173 | } else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) { |
ad913c11 | 174 | if (dflt->vcc.param[CISTPL_POWER_VNOM]/10000 != vcc) |
84e2d340 DB |
175 | return -ENODEV; |
176 | } | |
177 | ||
178 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
179 | p_dev->conf.Vpp = | |
180 | cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; | |
8e2fc39d | 181 | else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) |
84e2d340 | 182 | p_dev->conf.Vpp = |
8e2fc39d | 183 | dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; |
84e2d340 DB |
184 | |
185 | /* we need an interrupt */ | |
8e2fc39d | 186 | if (cfg->irq.IRQInfo1 || dflt->irq.IRQInfo1) |
84e2d340 DB |
187 | p_dev->conf.Attributes |= CONF_ENABLE_IRQ; |
188 | ||
189 | /* IO window settings */ | |
190 | p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0; | |
8e2fc39d DB |
191 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
192 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; | |
84e2d340 DB |
193 | |
194 | p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
195 | p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
196 | p_dev->io.BasePort1 = io->win[0].base; | |
197 | p_dev->io.NumPorts1 = io->win[0].len; | |
198 | ||
199 | return pcmcia_request_io(p_dev, &p_dev->io); | |
200 | } | |
201 | pcmcia_disable_device(p_dev); | |
202 | return -ENODEV; | |
203 | } | |
204 | ||
205 | ||
15b99ac1 | 206 | static int sl811_cs_config(struct pcmcia_device *link) |
c6de2b64 | 207 | { |
fba395ee | 208 | struct device *parent = &handle_to_dev(link); |
c6de2b64 | 209 | local_info_t *dev = link->priv; |
c6de2b64 | 210 | int last_fn, last_ret; |
c6de2b64 DB |
211 | |
212 | DBG(0, "sl811_cs_config(0x%p)\n", link); | |
213 | ||
ad913c11 DB |
214 | if (pcmcia_loop_config(link, sl811_cs_config_check, NULL)) |
215 | goto failed; | |
c6de2b64 DB |
216 | |
217 | /* require an IRQ and two registers */ | |
218 | if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) | |
ad913c11 | 219 | goto failed; |
c6de2b64 DB |
220 | if (link->conf.Attributes & CONF_ENABLE_IRQ) |
221 | CS_CHECK(RequestIRQ, | |
fba395ee | 222 | pcmcia_request_irq(link, &link->irq)); |
c6de2b64 | 223 | else |
ad913c11 | 224 | goto failed; |
c6de2b64 DB |
225 | |
226 | CS_CHECK(RequestConfiguration, | |
fba395ee | 227 | pcmcia_request_configuration(link, &link->conf)); |
c6de2b64 DB |
228 | |
229 | sprintf(dev->node.dev_name, driver_name); | |
230 | dev->node.major = dev->node.minor = 0; | |
fd238232 | 231 | link->dev_node = &dev->node; |
c6de2b64 | 232 | |
70294b46 DB |
233 | printk(KERN_INFO "%s: index 0x%02x: ", |
234 | dev->node.dev_name, link->conf.ConfigIndex); | |
235 | if (link->conf.Vpp) | |
236 | printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); | |
c6de2b64 DB |
237 | printk(", irq %d", link->irq.AssignedIRQ); |
238 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, | |
239 | link->io.BasePort1+link->io.NumPorts1-1); | |
240 | printk("\n"); | |
241 | ||
c6de2b64 DB |
242 | if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) |
243 | < 0) { | |
244 | cs_failed: | |
fba395ee | 245 | cs_error(link, last_fn, last_ret); |
ad913c11 DB |
246 | failed: |
247 | printk(KERN_WARNING "sl811_cs_config failed\n"); | |
c6de2b64 | 248 | sl811_cs_release(link); |
15b99ac1 | 249 | return -ENODEV; |
c6de2b64 | 250 | } |
15b99ac1 | 251 | return 0; |
c6de2b64 DB |
252 | } |
253 | ||
15b99ac1 | 254 | static int sl811_cs_probe(struct pcmcia_device *link) |
c6de2b64 DB |
255 | { |
256 | local_info_t *local; | |
c6de2b64 | 257 | |
dd00cc48 | 258 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
c6de2b64 | 259 | if (!local) |
f8cfa618 | 260 | return -ENOMEM; |
fba395ee | 261 | local->p_dev = link; |
c6de2b64 DB |
262 | link->priv = local; |
263 | ||
264 | /* Initialize */ | |
265 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
266 | link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; | |
c6de2b64 DB |
267 | link->irq.Handler = NULL; |
268 | ||
269 | link->conf.Attributes = 0; | |
c6de2b64 DB |
270 | link->conf.IntType = INT_MEMORY_AND_IO; |
271 | ||
15b99ac1 | 272 | return sl811_cs_config(link); |
c6de2b64 DB |
273 | } |
274 | ||
22f3a8f5 DB |
275 | static struct pcmcia_device_id sl811_ids[] = { |
276 | PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ | |
277 | PCMCIA_DEVICE_NULL, | |
278 | }; | |
279 | MODULE_DEVICE_TABLE(pcmcia, sl811_ids); | |
280 | ||
c6de2b64 DB |
281 | static struct pcmcia_driver sl811_cs_driver = { |
282 | .owner = THIS_MODULE, | |
283 | .drv = { | |
284 | .name = (char *)driver_name, | |
285 | }, | |
15b99ac1 | 286 | .probe = sl811_cs_probe, |
cc3b4866 | 287 | .remove = sl811_cs_detach, |
22f3a8f5 | 288 | .id_table = sl811_ids, |
c6de2b64 DB |
289 | }; |
290 | ||
291 | /*====================================================================*/ | |
292 | ||
293 | static int __init init_sl811_cs(void) | |
294 | { | |
295 | return pcmcia_register_driver(&sl811_cs_driver); | |
296 | } | |
297 | module_init(init_sl811_cs); | |
298 | ||
299 | static void __exit exit_sl811_cs(void) | |
300 | { | |
301 | pcmcia_unregister_driver(&sl811_cs_driver); | |
302 | } | |
303 | module_exit(exit_sl811_cs); |