blob: 9773601bf0bbfc49e04cef4b04efd7a159cdfc1a [file] [log] [blame]
David Brownellc6de2b62005-05-26 05:55:55 -07001/*
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>
David Brownellc6de2b62005-05-26 05:55:55 -070016#include <linux/ptrace.h>
17#include <linux/slab.h>
18#include <linux/string.h>
19#include <linux/timer.h>
20#include <linux/ioport.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010021#include <linux/platform_device.h>
David Brownellc6de2b62005-05-26 05:55:55 -070022
David Brownellc6de2b62005-05-26 05:55:55 -070023#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
David Brownell325a4af2006-06-13 09:59:32 -070029#include <linux/usb/sl811.h>
David Brownellc6de2b62005-05-26 05:55:55 -070030
31MODULE_AUTHOR("Botond Botyanszki");
32MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
33MODULE_LICENSE("GPL");
34
35
36/*====================================================================*/
37/* MACROS */
38/*====================================================================*/
39
David Brownellc9a50cc2005-11-07 20:45:20 -080040#if defined(DEBUG) || defined(PCMCIA_DEBUG)
David Brownellc6de2b62005-05-26 05:55:55 -070041
42static int pc_debug = 0;
43module_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
66static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
67
David Brownellc6de2b62005-05-26 05:55:55 -070068typedef struct local_info_t {
Dominik Brodowskifd238232006-03-05 10:45:09 +010069 struct pcmcia_device *p_dev;
David Brownellc6de2b62005-05-26 05:55:55 -070070 dev_node_t node;
71} local_info_t;
72
Dominik Brodowskifba395e2006-03-31 17:21:06 +020073static void sl811_cs_release(struct pcmcia_device * link);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +010074
David Brownellc6de2b62005-05-26 05:55:55 -070075/*====================================================================*/
76
77static void release_platform_dev(struct device * dev)
78{
79 DBG(0, "sl811_cs platform_dev release\n");
80 dev->parent = NULL;
81}
82
83static struct sl811_platform_data platform_data = {
84 .potpg = 100,
85 .power = 50, /* == 100mA */
86 // .reset = ... FIXME: invoke CF reset on the card
87};
88
89static 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
David Brownella0c53f12006-02-06 12:15:15 -0800103extern struct platform_driver sl811h_driver;
David Brownellc6de2b62005-05-26 05:55:55 -0700104
105static 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
115static 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
David Brownellc9a50cc2005-11-07 20:45:20 -0800131 * initialized already because of the link order dependency created
132 * by referencing "sl811h_driver".
David Brownellc6de2b62005-05-26 05:55:55 -0700133 */
David Brownella0c53f12006-02-06 12:15:15 -0800134 platform_dev.name = sl811h_driver.driver.name;
David Brownellc6de2b62005-05-26 05:55:55 -0700135 return platform_device_register(&platform_dev);
136}
137
138/*====================================================================*/
139
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200140static void sl811_cs_detach(struct pcmcia_device *link)
David Brownellc6de2b62005-05-26 05:55:55 -0700141{
David Brownellc6de2b62005-05-26 05:55:55 -0700142 DBG(0, "sl811_cs_detach(0x%p)\n", link);
143
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100144 sl811_cs_release(link);
David Brownellc6de2b62005-05-26 05:55:55 -0700145
David Brownellc6de2b62005-05-26 05:55:55 -0700146 /* This points to the parent local_info_t struct */
147 kfree(link->priv);
148}
149
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200150static void sl811_cs_release(struct pcmcia_device * link)
David Brownellc6de2b62005-05-26 05:55:55 -0700151{
David Brownellc6de2b62005-05-26 05:55:55 -0700152 DBG(0, "sl811_cs_release(0x%p)\n", link);
153
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200154 pcmcia_disable_device(link);
David Brownellc6de2b62005-05-26 05:55:55 -0700155 platform_device_unregister(&platform_dev);
David Brownellc6de2b62005-05-26 05:55:55 -0700156}
157
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200158struct sl811_css_cfg {
159 cistpl_cftable_entry_t dflt;
160 config_info_t conf;
161};
162
163static 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
175 p_dev->conf.ConfigIndex = cfg->index;
176
177 /* Use power settings for Vcc and Vpp if present */
178 /* Note that the CIS values need to be rescaled */
179 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
180 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 !=
181 cfg_mem->conf.Vcc)
182 return -ENODEV;
183 } else if (cfg_mem->dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
184 if (cfg_mem->dflt.vcc.param[CISTPL_POWER_VNOM]/10000
185 != cfg_mem->conf.Vcc)
186 return -ENODEV;
187 }
188
189 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
190 p_dev->conf.Vpp =
191 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
192 else if (cfg_mem->dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
193 p_dev->conf.Vpp =
194 cfg_mem->dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
195
196 /* we need an interrupt */
197 if (cfg->irq.IRQInfo1 || cfg_mem->dflt.irq.IRQInfo1)
198 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
199
200 /* IO window settings */
201 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
202 if ((cfg->io.nwin > 0) || (cfg_mem->dflt.io.nwin > 0)) {
203 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &cfg_mem->dflt.io;
204
205 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
206 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
207 p_dev->io.BasePort1 = io->win[0].base;
208 p_dev->io.NumPorts1 = io->win[0].len;
209
210 return pcmcia_request_io(p_dev, &p_dev->io);
211 }
212 pcmcia_disable_device(p_dev);
213 return -ENODEV;
214}
215
216
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200217static int sl811_cs_config(struct pcmcia_device *link)
David Brownellc6de2b62005-05-26 05:55:55 -0700218{
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200219 struct device *parent = &handle_to_dev(link);
David Brownellc6de2b62005-05-26 05:55:55 -0700220 local_info_t *dev = link->priv;
David Brownellc6de2b62005-05-26 05:55:55 -0700221 int last_fn, last_ret;
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200222 struct sl811_css_cfg *cfg_mem;
David Brownellc6de2b62005-05-26 05:55:55 -0700223
224 DBG(0, "sl811_cs_config(0x%p)\n", link);
225
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200226 cfg_mem = kzalloc(sizeof(struct sl811_css_cfg), GFP_KERNEL);
227 if (!cfg_mem)
228 return -ENOMEM;
229
David Brownellc6de2b62005-05-26 05:55:55 -0700230 /* Look up the current Vcc */
231 CS_CHECK(GetConfigurationInfo,
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200232 pcmcia_get_configuration_info(link, &cfg_mem->conf));
David Brownellc6de2b62005-05-26 05:55:55 -0700233
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200234 if (pcmcia_loop_config(link, sl811_cs_config_check, cfg_mem))
235 return -ENODEV;
David Brownellc6de2b62005-05-26 05:55:55 -0700236
237 /* require an IRQ and two registers */
238 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
239 goto cs_failed;
240 if (link->conf.Attributes & CONF_ENABLE_IRQ)
241 CS_CHECK(RequestIRQ,
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200242 pcmcia_request_irq(link, &link->irq));
David Brownellc6de2b62005-05-26 05:55:55 -0700243 else
244 goto cs_failed;
245
246 CS_CHECK(RequestConfiguration,
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200247 pcmcia_request_configuration(link, &link->conf));
David Brownellc6de2b62005-05-26 05:55:55 -0700248
249 sprintf(dev->node.dev_name, driver_name);
250 dev->node.major = dev->node.minor = 0;
Dominik Brodowskifd238232006-03-05 10:45:09 +0100251 link->dev_node = &dev->node;
David Brownellc6de2b62005-05-26 05:55:55 -0700252
Dominik Brodowski70294b42006-01-15 12:43:16 +0100253 printk(KERN_INFO "%s: index 0x%02x: ",
254 dev->node.dev_name, link->conf.ConfigIndex);
255 if (link->conf.Vpp)
256 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
David Brownellc6de2b62005-05-26 05:55:55 -0700257 printk(", irq %d", link->irq.AssignedIRQ);
258 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
259 link->io.BasePort1+link->io.NumPorts1-1);
260 printk("\n");
261
David Brownellc6de2b62005-05-26 05:55:55 -0700262 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
263 < 0) {
264cs_failed:
265 printk("sl811_cs_config failed\n");
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200266 cs_error(link, last_fn, last_ret);
David Brownellc6de2b62005-05-26 05:55:55 -0700267 sl811_cs_release(link);
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200268 kfree(cfg_mem);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200269 return -ENODEV;
David Brownellc6de2b62005-05-26 05:55:55 -0700270 }
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200271 kfree(cfg_mem);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200272 return 0;
David Brownellc6de2b62005-05-26 05:55:55 -0700273}
274
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200275static int sl811_cs_probe(struct pcmcia_device *link)
David Brownellc6de2b62005-05-26 05:55:55 -0700276{
277 local_info_t *local;
David Brownellc6de2b62005-05-26 05:55:55 -0700278
Yoann Padioleaudd00cc42007-07-19 01:49:03 -0700279 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
David Brownellc6de2b62005-05-26 05:55:55 -0700280 if (!local)
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100281 return -ENOMEM;
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200282 local->p_dev = link;
David Brownellc6de2b62005-05-26 05:55:55 -0700283 link->priv = local;
284
285 /* Initialize */
286 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
287 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
David Brownellc6de2b62005-05-26 05:55:55 -0700288 link->irq.Handler = NULL;
289
290 link->conf.Attributes = 0;
David Brownellc6de2b62005-05-26 05:55:55 -0700291 link->conf.IntType = INT_MEMORY_AND_IO;
292
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200293 return sl811_cs_config(link);
David Brownellc6de2b62005-05-26 05:55:55 -0700294}
295
David Brownell22f3a8f2005-06-27 16:28:43 -0700296static struct pcmcia_device_id sl811_ids[] = {
297 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
298 PCMCIA_DEVICE_NULL,
299};
300MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
301
David Brownellc6de2b62005-05-26 05:55:55 -0700302static struct pcmcia_driver sl811_cs_driver = {
303 .owner = THIS_MODULE,
304 .drv = {
305 .name = (char *)driver_name,
306 },
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200307 .probe = sl811_cs_probe,
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100308 .remove = sl811_cs_detach,
David Brownell22f3a8f2005-06-27 16:28:43 -0700309 .id_table = sl811_ids,
David Brownellc6de2b62005-05-26 05:55:55 -0700310};
311
312/*====================================================================*/
313
314static int __init init_sl811_cs(void)
315{
316 return pcmcia_register_driver(&sl811_cs_driver);
317}
318module_init(init_sl811_cs);
319
320static void __exit exit_sl811_cs(void)
321{
322 pcmcia_unregister_driver(&sl811_cs_driver);
323}
324module_exit(exit_sl811_cs);