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> 22 #include <linux/platform_device.h> 23 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 41 #if defined(DEBUG) || defined(PCMCIA_DEBUG) 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 69 typedef struct local_info_t { 70 struct pcmcia_device *p_dev; 71 dev_node_t node; 72 } local_info_t; 73 74 static void sl811_cs_release(struct pcmcia_device * link); 75 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 }; 103 104 extern struct platform_driver sl811h_driver; 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 132 * initialized already because of the link order dependency created 133 * by referencing "sl811h_driver". 134 */ 135 platform_dev.name = sl811h_driver.driver.name; 136 return platform_device_register(&platform_dev); 137 } 138 139 /*====================================================================*/ 140 141 static void sl811_cs_detach(struct pcmcia_device *link) 142 { 143 DBG(0, "sl811_cs_detach(0x%p)\n", link); 144 145 sl811_cs_release(link); 146 147 /* This points to the parent local_info_t struct */ 148 kfree(link->priv); 149 } 150 151 static void sl811_cs_release(struct pcmcia_device * link) 152 { 153 DBG(0, "sl811_cs_release(0x%p)\n", link); 154 155 pcmcia_disable_device(link); 156 platform_device_unregister(&platform_dev); 157 } 158 159 static int sl811_cs_config(struct pcmcia_device *link) 160 { 161 struct device *parent = &handle_to_dev(link); 162 local_info_t *dev = link->priv; 163 tuple_t tuple; 164 cisparse_t parse; 165 int last_fn, last_ret; 166 u_char buf[64]; 167 config_info_t conf; 168 cistpl_cftable_entry_t dflt = { 0 }; 169 170 DBG(0, "sl811_cs_config(0x%p)\n", link); 171 172 tuple.DesiredTuple = CISTPL_CONFIG; 173 tuple.Attributes = 0; 174 tuple.TupleData = buf; 175 tuple.TupleDataMax = sizeof(buf); 176 tuple.TupleOffset = 0; 177 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 178 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); 179 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); 180 link->conf.ConfigBase = parse.config.base; 181 link->conf.Present = parse.config.rmask[0]; 182 183 /* Look up the current Vcc */ 184 CS_CHECK(GetConfigurationInfo, 185 pcmcia_get_configuration_info(link, &conf)); 186 187 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 188 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 189 while (1) { 190 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); 191 192 if (pcmcia_get_tuple_data(link, &tuple) != 0 193 || pcmcia_parse_tuple(link, &tuple, &parse) 194 != 0) 195 goto next_entry; 196 197 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) { 198 dflt = *cfg; 199 } 200 201 if (cfg->index == 0) 202 goto next_entry; 203 204 link->conf.ConfigIndex = cfg->index; 205 206 /* Use power settings for Vcc and Vpp if present */ 207 /* Note that the CIS values need to be rescaled */ 208 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { 209 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 210 != conf.Vcc) 211 goto next_entry; 212 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) { 213 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000 214 != conf.Vcc) 215 goto next_entry; 216 } 217 218 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) 219 link->conf.Vpp = 220 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; 221 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) 222 link->conf.Vpp = 223 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; 224 225 /* we need an interrupt */ 226 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) 227 link->conf.Attributes |= CONF_ENABLE_IRQ; 228 229 /* IO window settings */ 230 link->io.NumPorts1 = link->io.NumPorts2 = 0; 231 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { 232 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; 233 234 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 235 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; 236 link->io.BasePort1 = io->win[0].base; 237 link->io.NumPorts1 = io->win[0].len; 238 239 if (pcmcia_request_io(link, &link->io) != 0) 240 goto next_entry; 241 } 242 break; 243 244 next_entry: 245 pcmcia_disable_device(link); 246 last_ret = pcmcia_get_next_tuple(link, &tuple); 247 } 248 249 /* require an IRQ and two registers */ 250 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) 251 goto cs_failed; 252 if (link->conf.Attributes & CONF_ENABLE_IRQ) 253 CS_CHECK(RequestIRQ, 254 pcmcia_request_irq(link, &link->irq)); 255 else 256 goto cs_failed; 257 258 CS_CHECK(RequestConfiguration, 259 pcmcia_request_configuration(link, &link->conf)); 260 261 sprintf(dev->node.dev_name, driver_name); 262 dev->node.major = dev->node.minor = 0; 263 link->dev_node = &dev->node; 264 265 printk(KERN_INFO "%s: index 0x%02x: ", 266 dev->node.dev_name, link->conf.ConfigIndex); 267 if (link->conf.Vpp) 268 printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10); 269 printk(", irq %d", link->irq.AssignedIRQ); 270 printk(", io 0x%04x-0x%04x", link->io.BasePort1, 271 link->io.BasePort1+link->io.NumPorts1-1); 272 printk("\n"); 273 274 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) 275 < 0) { 276 cs_failed: 277 printk("sl811_cs_config failed\n"); 278 cs_error(link, last_fn, last_ret); 279 sl811_cs_release(link); 280 return -ENODEV; 281 } 282 return 0; 283 } 284 285 static int sl811_cs_probe(struct pcmcia_device *link) 286 { 287 local_info_t *local; 288 289 local = kmalloc(sizeof(local_info_t), GFP_KERNEL); 290 if (!local) 291 return -ENOMEM; 292 memset(local, 0, sizeof(local_info_t)); 293 local->p_dev = link; 294 link->priv = local; 295 296 /* Initialize */ 297 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 298 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; 299 link->irq.Handler = NULL; 300 301 link->conf.Attributes = 0; 302 link->conf.IntType = INT_MEMORY_AND_IO; 303 304 return sl811_cs_config(link); 305 } 306 307 static struct pcmcia_device_id sl811_ids[] = { 308 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ 309 PCMCIA_DEVICE_NULL, 310 }; 311 MODULE_DEVICE_TABLE(pcmcia, sl811_ids); 312 313 static struct pcmcia_driver sl811_cs_driver = { 314 .owner = THIS_MODULE, 315 .drv = { 316 .name = (char *)driver_name, 317 }, 318 .probe = sl811_cs_probe, 319 .remove = sl811_cs_detach, 320 .id_table = sl811_ids, 321 }; 322 323 /*====================================================================*/ 324 325 static int __init init_sl811_cs(void) 326 { 327 return pcmcia_register_driver(&sl811_cs_driver); 328 } 329 module_init(init_sl811_cs); 330 331 static void __exit exit_sl811_cs(void) 332 { 333 pcmcia_unregister_driver(&sl811_cs_driver); 334 } 335 module_exit(exit_sl811_cs); 336