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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.h> |
24 | #include <pcmcia/cistpl.h> | |
25 | #include <pcmcia/cisreg.h> | |
26 | #include <pcmcia/ds.h> | |
27 | ||
325a4af6 | 28 | #include <linux/usb/sl811.h> |
c6de2b64 DB |
29 | |
30 | MODULE_AUTHOR("Botond Botyanszki"); | |
31 | MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6"); | |
32 | MODULE_LICENSE("GPL"); | |
33 | ||
34 | ||
35 | /*====================================================================*/ | |
36 | /* MACROS */ | |
37 | /*====================================================================*/ | |
38 | ||
c6de2b64 DB |
39 | #define INFO(args...) printk(KERN_INFO "sl811_cs: " args) |
40 | ||
c6de2b64 DB |
41 | /*====================================================================*/ |
42 | /* VARIABLES */ | |
43 | /*====================================================================*/ | |
44 | ||
c6de2b64 | 45 | typedef struct local_info_t { |
fd238232 | 46 | struct pcmcia_device *p_dev; |
c6de2b64 DB |
47 | } local_info_t; |
48 | ||
fba395ee | 49 | static void sl811_cs_release(struct pcmcia_device * link); |
cc3b4866 | 50 | |
c6de2b64 DB |
51 | /*====================================================================*/ |
52 | ||
53 | static void release_platform_dev(struct device * dev) | |
54 | { | |
9b44de20 | 55 | dev_dbg(dev, "sl811_cs platform_dev release\n"); |
c6de2b64 DB |
56 | dev->parent = NULL; |
57 | } | |
58 | ||
59 | static struct sl811_platform_data platform_data = { | |
60 | .potpg = 100, | |
61 | .power = 50, /* == 100mA */ | |
62 | // .reset = ... FIXME: invoke CF reset on the card | |
63 | }; | |
64 | ||
65 | static struct resource resources[] = { | |
66 | [0] = { | |
67 | .flags = IORESOURCE_IRQ, | |
68 | }, | |
69 | [1] = { | |
70 | // .name = "address", | |
71 | .flags = IORESOURCE_IO, | |
72 | }, | |
73 | [2] = { | |
74 | // .name = "data", | |
75 | .flags = IORESOURCE_IO, | |
76 | }, | |
77 | }; | |
78 | ||
a0c53f1d | 79 | extern struct platform_driver sl811h_driver; |
c6de2b64 DB |
80 | |
81 | static struct platform_device platform_dev = { | |
82 | .id = -1, | |
83 | .dev = { | |
84 | .platform_data = &platform_data, | |
85 | .release = release_platform_dev, | |
86 | }, | |
87 | .resource = resources, | |
88 | .num_resources = ARRAY_SIZE(resources), | |
89 | }; | |
90 | ||
d39bd564 DB |
91 | static int sl811_hc_init(struct device *parent, resource_size_t base_addr, |
92 | int irq) | |
c6de2b64 DB |
93 | { |
94 | if (platform_dev.dev.parent) | |
95 | return -EBUSY; | |
96 | platform_dev.dev.parent = parent; | |
97 | ||
98 | /* finish seting up the platform device */ | |
99 | resources[0].start = irq; | |
100 | ||
101 | resources[1].start = base_addr; | |
102 | resources[1].end = base_addr; | |
103 | ||
104 | resources[2].start = base_addr + 1; | |
105 | resources[2].end = base_addr + 1; | |
106 | ||
107 | /* The driver core will probe for us. We know sl811-hcd has been | |
c9a50cc9 DB |
108 | * initialized already because of the link order dependency created |
109 | * by referencing "sl811h_driver". | |
c6de2b64 | 110 | */ |
a0c53f1d | 111 | platform_dev.name = sl811h_driver.driver.name; |
c6de2b64 DB |
112 | return platform_device_register(&platform_dev); |
113 | } | |
114 | ||
115 | /*====================================================================*/ | |
116 | ||
fba395ee | 117 | static void sl811_cs_detach(struct pcmcia_device *link) |
c6de2b64 | 118 | { |
9b44de20 | 119 | dev_dbg(&link->dev, "sl811_cs_detach\n"); |
c6de2b64 | 120 | |
e2d40963 | 121 | sl811_cs_release(link); |
c6de2b64 | 122 | |
c6de2b64 DB |
123 | /* This points to the parent local_info_t struct */ |
124 | kfree(link->priv); | |
125 | } | |
126 | ||
fba395ee | 127 | static void sl811_cs_release(struct pcmcia_device * link) |
c6de2b64 | 128 | { |
9b44de20 | 129 | dev_dbg(&link->dev, "sl811_cs_release\n"); |
c6de2b64 | 130 | |
fba395ee | 131 | pcmcia_disable_device(link); |
c6de2b64 | 132 | platform_device_unregister(&platform_dev); |
c6de2b64 DB |
133 | } |
134 | ||
84e2d340 DB |
135 | static int sl811_cs_config_check(struct pcmcia_device *p_dev, |
136 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 137 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 138 | unsigned int vcc, |
84e2d340 DB |
139 | void *priv_data) |
140 | { | |
84e2d340 DB |
141 | if (cfg->index == 0) |
142 | return -ENODEV; | |
143 | ||
84e2d340 DB |
144 | /* Use power settings for Vcc and Vpp if present */ |
145 | /* Note that the CIS values need to be rescaled */ | |
146 | if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
ad913c11 | 147 | if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 != vcc) |
84e2d340 | 148 | return -ENODEV; |
8e2fc39d | 149 | } else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) { |
ad913c11 | 150 | if (dflt->vcc.param[CISTPL_POWER_VNOM]/10000 != vcc) |
84e2d340 DB |
151 | return -ENODEV; |
152 | } | |
153 | ||
154 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
e8405f0f | 155 | p_dev->vpp = |
84e2d340 | 156 | cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; |
8e2fc39d | 157 | else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM)) |
e8405f0f | 158 | p_dev->vpp = |
8e2fc39d | 159 | dflt->vpp1.param[CISTPL_POWER_VNOM]/10000; |
84e2d340 DB |
160 | |
161 | /* we need an interrupt */ | |
eb14120f | 162 | p_dev->conf.Attributes |= CONF_ENABLE_IRQ; |
84e2d340 DB |
163 | |
164 | /* IO window settings */ | |
90abdc3b | 165 | p_dev->resource[0]->end = p_dev->resource[1]->end = 0; |
8e2fc39d DB |
166 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
167 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; | |
90abdc3b | 168 | p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; |
84e2d340 | 169 | |
90abdc3b DB |
170 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
171 | p_dev->resource[0]->start = io->win[0].base; | |
172 | p_dev->resource[0]->end = io->win[0].len; | |
84e2d340 | 173 | |
90abdc3b | 174 | return pcmcia_request_io(p_dev); |
84e2d340 DB |
175 | } |
176 | pcmcia_disable_device(p_dev); | |
177 | return -ENODEV; | |
178 | } | |
179 | ||
180 | ||
15b99ac1 | 181 | static int sl811_cs_config(struct pcmcia_device *link) |
c6de2b64 | 182 | { |
dd2e5a15 | 183 | struct device *parent = &link->dev; |
9b44de20 | 184 | int ret; |
c6de2b64 | 185 | |
9b44de20 | 186 | dev_dbg(&link->dev, "sl811_cs_config\n"); |
c6de2b64 | 187 | |
ad913c11 DB |
188 | if (pcmcia_loop_config(link, sl811_cs_config_check, NULL)) |
189 | goto failed; | |
c6de2b64 DB |
190 | |
191 | /* require an IRQ and two registers */ | |
9a017a91 | 192 | if (resource_size(link->resource[0]) < 2) |
ad913c11 | 193 | goto failed; |
eb14120f DB |
194 | |
195 | if (!link->irq) | |
ad913c11 | 196 | goto failed; |
c6de2b64 | 197 | |
9b44de20 DB |
198 | ret = pcmcia_request_configuration(link, &link->conf); |
199 | if (ret) | |
200 | goto failed; | |
c6de2b64 | 201 | |
ded6a1a3 | 202 | dev_info(&link->dev, "index 0x%02x: ", |
7feabb64 | 203 | link->config_index); |
e8405f0f DB |
204 | if (link->vpp) |
205 | printk(", Vpp %d.%d", link->vpp/10, link->vpp%10); | |
eb14120f | 206 | printk(", irq %d", link->irq); |
9a017a91 | 207 | printk(", io %pR", link->resource[0]); |
c6de2b64 DB |
208 | printk("\n"); |
209 | ||
9a017a91 | 210 | if (sl811_hc_init(parent, link->resource[0]->start, link->irq) |
c6de2b64 | 211 | < 0) { |
ad913c11 DB |
212 | failed: |
213 | printk(KERN_WARNING "sl811_cs_config failed\n"); | |
c6de2b64 | 214 | sl811_cs_release(link); |
15b99ac1 | 215 | return -ENODEV; |
c6de2b64 | 216 | } |
15b99ac1 | 217 | return 0; |
c6de2b64 DB |
218 | } |
219 | ||
15b99ac1 | 220 | static int sl811_cs_probe(struct pcmcia_device *link) |
c6de2b64 DB |
221 | { |
222 | local_info_t *local; | |
c6de2b64 | 223 | |
dd00cc48 | 224 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
c6de2b64 | 225 | if (!local) |
f8cfa618 | 226 | return -ENOMEM; |
fba395ee | 227 | local->p_dev = link; |
c6de2b64 DB |
228 | link->priv = local; |
229 | ||
c6de2b64 | 230 | link->conf.Attributes = 0; |
c6de2b64 | 231 | |
15b99ac1 | 232 | return sl811_cs_config(link); |
c6de2b64 DB |
233 | } |
234 | ||
22f3a8f5 DB |
235 | static struct pcmcia_device_id sl811_ids[] = { |
236 | PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ | |
237 | PCMCIA_DEVICE_NULL, | |
238 | }; | |
239 | MODULE_DEVICE_TABLE(pcmcia, sl811_ids); | |
240 | ||
c6de2b64 DB |
241 | static struct pcmcia_driver sl811_cs_driver = { |
242 | .owner = THIS_MODULE, | |
243 | .drv = { | |
ac8b4228 | 244 | .name = "sl811_cs", |
c6de2b64 | 245 | }, |
15b99ac1 | 246 | .probe = sl811_cs_probe, |
cc3b4866 | 247 | .remove = sl811_cs_detach, |
22f3a8f5 | 248 | .id_table = sl811_ids, |
c6de2b64 DB |
249 | }; |
250 | ||
251 | /*====================================================================*/ | |
252 | ||
253 | static int __init init_sl811_cs(void) | |
254 | { | |
255 | return pcmcia_register_driver(&sl811_cs_driver); | |
256 | } | |
257 | module_init(init_sl811_cs); | |
258 | ||
259 | static void __exit exit_sl811_cs(void) | |
260 | { | |
261 | pcmcia_unregister_driver(&sl811_cs_driver); | |
262 | } | |
263 | module_exit(exit_sl811_cs); |