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/ptrace.h> 16 #include <linux/slab.h> 17 #include <linux/string.h> 18 #include <linux/timer.h> 19 #include <linux/ioport.h> 20 #include <linux/platform_device.h> 21 22 #include <pcmcia/cistpl.h> 23 #include <pcmcia/cisreg.h> 24 #include <pcmcia/ds.h> 25 26 #include <linux/usb/sl811.h> 27 28 MODULE_AUTHOR("Botond Botyanszki"); 29 MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6"); 30 MODULE_LICENSE("GPL"); 31 32 33 /*====================================================================*/ 34 /* MACROS */ 35 /*====================================================================*/ 36 37 #define INFO(args...) printk(KERN_INFO "sl811_cs: " args) 38 39 /*====================================================================*/ 40 /* VARIABLES */ 41 /*====================================================================*/ 42 43 typedef struct local_info_t { 44 struct pcmcia_device *p_dev; 45 } local_info_t; 46 47 static void sl811_cs_release(struct pcmcia_device * link); 48 49 /*====================================================================*/ 50 51 static void release_platform_dev(struct device * dev) 52 { 53 dev_dbg(dev, "sl811_cs platform_dev release\n"); 54 dev->parent = NULL; 55 } 56 57 static struct sl811_platform_data platform_data = { 58 .potpg = 100, 59 .power = 50, /* == 100mA */ 60 // .reset = ... FIXME: invoke CF reset on the card 61 }; 62 63 static struct resource resources[] = { 64 [0] = { 65 .flags = IORESOURCE_IRQ, 66 }, 67 [1] = { 68 // .name = "address", 69 .flags = IORESOURCE_IO, 70 }, 71 [2] = { 72 // .name = "data", 73 .flags = IORESOURCE_IO, 74 }, 75 }; 76 77 extern struct platform_driver sl811h_driver; 78 79 static struct platform_device platform_dev = { 80 .id = -1, 81 .dev = { 82 .platform_data = &platform_data, 83 .release = release_platform_dev, 84 }, 85 .resource = resources, 86 .num_resources = ARRAY_SIZE(resources), 87 }; 88 89 static int sl811_hc_init(struct device *parent, resource_size_t base_addr, 90 int irq) 91 { 92 if (platform_dev.dev.parent) 93 return -EBUSY; 94 platform_dev.dev.parent = parent; 95 96 /* finish seting up the platform device */ 97 resources[0].start = irq; 98 99 resources[1].start = base_addr; 100 resources[1].end = base_addr; 101 102 resources[2].start = base_addr + 1; 103 resources[2].end = base_addr + 1; 104 105 /* The driver core will probe for us. We know sl811-hcd has been 106 * initialized already because of the link order dependency created 107 * by referencing "sl811h_driver". 108 */ 109 platform_dev.name = sl811h_driver.driver.name; 110 return platform_device_register(&platform_dev); 111 } 112 113 /*====================================================================*/ 114 115 static void sl811_cs_detach(struct pcmcia_device *link) 116 { 117 dev_dbg(&link->dev, "sl811_cs_detach\n"); 118 119 sl811_cs_release(link); 120 121 /* This points to the parent local_info_t struct */ 122 kfree(link->priv); 123 } 124 125 static void sl811_cs_release(struct pcmcia_device * link) 126 { 127 dev_dbg(&link->dev, "sl811_cs_release\n"); 128 129 pcmcia_disable_device(link); 130 platform_device_unregister(&platform_dev); 131 } 132 133 static int sl811_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) 134 { 135 if (p_dev->config_index == 0) 136 return -EINVAL; 137 138 return pcmcia_request_io(p_dev); 139 } 140 141 142 static int sl811_cs_config(struct pcmcia_device *link) 143 { 144 struct device *parent = &link->dev; 145 int ret; 146 147 dev_dbg(&link->dev, "sl811_cs_config\n"); 148 149 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | 150 CONF_AUTO_CHECK_VCC | CONF_AUTO_SET_IO; 151 152 if (pcmcia_loop_config(link, sl811_cs_config_check, NULL)) 153 goto failed; 154 155 /* require an IRQ and two registers */ 156 if (resource_size(link->resource[0]) < 2) 157 goto failed; 158 159 if (!link->irq) 160 goto failed; 161 162 ret = pcmcia_enable_device(link); 163 if (ret) 164 goto failed; 165 166 if (sl811_hc_init(parent, link->resource[0]->start, link->irq) 167 < 0) { 168 failed: 169 printk(KERN_WARNING "sl811_cs_config failed\n"); 170 sl811_cs_release(link); 171 return -ENODEV; 172 } 173 return 0; 174 } 175 176 static int sl811_cs_probe(struct pcmcia_device *link) 177 { 178 local_info_t *local; 179 180 local = kzalloc(sizeof(local_info_t), GFP_KERNEL); 181 if (!local) 182 return -ENOMEM; 183 local->p_dev = link; 184 link->priv = local; 185 186 return sl811_cs_config(link); 187 } 188 189 static const struct pcmcia_device_id sl811_ids[] = { 190 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ 191 PCMCIA_DEVICE_NULL, 192 }; 193 MODULE_DEVICE_TABLE(pcmcia, sl811_ids); 194 195 static struct pcmcia_driver sl811_cs_driver = { 196 .owner = THIS_MODULE, 197 .name = "sl811_cs", 198 .probe = sl811_cs_probe, 199 .remove = sl811_cs_detach, 200 .id_table = sl811_ids, 201 }; 202 module_pcmcia_driver(sl811_cs_driver); 203