1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2008-2010 4 * 5 * - Kurt Van Dijck, EIA Electronics 6 */ 7 8 #include <linux/module.h> 9 #include <linux/kernel.h> 10 #include <linux/slab.h> 11 12 #include <pcmcia/cistpl.h> 13 #include <pcmcia/ds.h> 14 15 #include "softing_platform.h" 16 17 static int softingcs_index; 18 static DEFINE_SPINLOCK(softingcs_index_lock); 19 20 static int softingcs_reset(struct platform_device *pdev, int v); 21 static int softingcs_enable_irq(struct platform_device *pdev, int v); 22 23 /* 24 * platform_data descriptions 25 */ 26 #define MHZ (1000*1000) 27 static const struct softing_platform_data softingcs_platform_data[] = { 28 { 29 .name = "CANcard", 30 .manf = 0x0168, .prod = 0x001, 31 .generation = 1, 32 .nbus = 2, 33 .freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4, 34 .dpram_size = 0x0800, 35 .boot = {0x0000, 0x000000, fw_dir "bcard.bin",}, 36 .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",}, 37 .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",}, 38 .reset = softingcs_reset, 39 .enable_irq = softingcs_enable_irq, 40 }, { 41 .name = "CANcard-NEC", 42 .manf = 0x0168, .prod = 0x002, 43 .generation = 1, 44 .nbus = 2, 45 .freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4, 46 .dpram_size = 0x0800, 47 .boot = {0x0000, 0x000000, fw_dir "bcard.bin",}, 48 .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",}, 49 .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",}, 50 .reset = softingcs_reset, 51 .enable_irq = softingcs_enable_irq, 52 }, { 53 .name = "CANcard-SJA", 54 .manf = 0x0168, .prod = 0x004, 55 .generation = 1, 56 .nbus = 2, 57 .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4, 58 .dpram_size = 0x0800, 59 .boot = {0x0000, 0x000000, fw_dir "bcard.bin",}, 60 .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",}, 61 .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",}, 62 .reset = softingcs_reset, 63 .enable_irq = softingcs_enable_irq, 64 }, { 65 .name = "CANcard-2", 66 .manf = 0x0168, .prod = 0x005, 67 .generation = 2, 68 .nbus = 2, 69 .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4, 70 .dpram_size = 0x1000, 71 .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",}, 72 .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",}, 73 .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",}, 74 .reset = softingcs_reset, 75 .enable_irq = NULL, 76 }, { 77 .name = "Vector-CANcard", 78 .manf = 0x0168, .prod = 0x081, 79 .generation = 1, 80 .nbus = 2, 81 .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4, 82 .dpram_size = 0x0800, 83 .boot = {0x0000, 0x000000, fw_dir "bcard.bin",}, 84 .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",}, 85 .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",}, 86 .reset = softingcs_reset, 87 .enable_irq = softingcs_enable_irq, 88 }, { 89 .name = "Vector-CANcard-SJA", 90 .manf = 0x0168, .prod = 0x084, 91 .generation = 1, 92 .nbus = 2, 93 .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4, 94 .dpram_size = 0x0800, 95 .boot = {0x0000, 0x000000, fw_dir "bcard.bin",}, 96 .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",}, 97 .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",}, 98 .reset = softingcs_reset, 99 .enable_irq = softingcs_enable_irq, 100 }, { 101 .name = "Vector-CANcard-2", 102 .manf = 0x0168, .prod = 0x085, 103 .generation = 2, 104 .nbus = 2, 105 .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4, 106 .dpram_size = 0x1000, 107 .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",}, 108 .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",}, 109 .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",}, 110 .reset = softingcs_reset, 111 .enable_irq = NULL, 112 }, { 113 .name = "EDICcard-NEC", 114 .manf = 0x0168, .prod = 0x102, 115 .generation = 1, 116 .nbus = 2, 117 .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4, 118 .dpram_size = 0x0800, 119 .boot = {0x0000, 0x000000, fw_dir "bcard.bin",}, 120 .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",}, 121 .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",}, 122 .reset = softingcs_reset, 123 .enable_irq = softingcs_enable_irq, 124 }, { 125 .name = "EDICcard-2", 126 .manf = 0x0168, .prod = 0x105, 127 .generation = 2, 128 .nbus = 2, 129 .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4, 130 .dpram_size = 0x1000, 131 .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",}, 132 .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",}, 133 .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",}, 134 .reset = softingcs_reset, 135 .enable_irq = NULL, 136 }, { 137 0, 0, 138 }, 139 }; 140 141 MODULE_FIRMWARE(fw_dir "bcard.bin"); 142 MODULE_FIRMWARE(fw_dir "ldcard.bin"); 143 MODULE_FIRMWARE(fw_dir "cancard.bin"); 144 MODULE_FIRMWARE(fw_dir "cansja.bin"); 145 146 MODULE_FIRMWARE(fw_dir "bcard2.bin"); 147 MODULE_FIRMWARE(fw_dir "ldcard2.bin"); 148 MODULE_FIRMWARE(fw_dir "cancrd2.bin"); 149 150 static const struct softing_platform_data 151 *softingcs_find_platform_data(unsigned int manf, unsigned int prod) 152 { 153 const struct softing_platform_data *lp; 154 155 for (lp = softingcs_platform_data; lp->manf; ++lp) { 156 if ((lp->manf == manf) && (lp->prod == prod)) 157 return lp; 158 } 159 return NULL; 160 } 161 162 /* 163 * platformdata callbacks 164 */ 165 static int softingcs_reset(struct platform_device *pdev, int v) 166 { 167 struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent); 168 169 dev_dbg(&pdev->dev, "pcmcia config [2] %02x\n", v ? 0 : 0x20); 170 return pcmcia_write_config_byte(pcmcia, 2, v ? 0 : 0x20); 171 } 172 173 static int softingcs_enable_irq(struct platform_device *pdev, int v) 174 { 175 struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent); 176 177 dev_dbg(&pdev->dev, "pcmcia config [0] %02x\n", v ? 0x60 : 0); 178 return pcmcia_write_config_byte(pcmcia, 0, v ? 0x60 : 0); 179 } 180 181 /* 182 * pcmcia check 183 */ 184 static int softingcs_probe_config(struct pcmcia_device *pcmcia, void *priv_data) 185 { 186 struct softing_platform_data *pdat = priv_data; 187 struct resource *pres; 188 int memspeed = 0; 189 190 WARN_ON(!pdat); 191 pres = pcmcia->resource[PCMCIA_IOMEM_0]; 192 if (resource_size(pres) < 0x1000) 193 return -ERANGE; 194 195 pres->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE; 196 if (pdat->generation < 2) { 197 pres->flags |= WIN_USE_WAIT | WIN_DATA_WIDTH_8; 198 memspeed = 3; 199 } else { 200 pres->flags |= WIN_DATA_WIDTH_16; 201 } 202 return pcmcia_request_window(pcmcia, pres, memspeed); 203 } 204 205 static void softingcs_remove(struct pcmcia_device *pcmcia) 206 { 207 struct platform_device *pdev = pcmcia->priv; 208 209 /* free bits */ 210 platform_device_unregister(pdev); 211 /* release pcmcia stuff */ 212 pcmcia_disable_device(pcmcia); 213 } 214 215 /* 216 * platform_device wrapper 217 * pdev->resource has 2 entries: io & irq 218 */ 219 static void softingcs_pdev_release(struct device *dev) 220 { 221 struct platform_device *pdev = to_platform_device(dev); 222 kfree(pdev); 223 } 224 225 static int softingcs_probe(struct pcmcia_device *pcmcia) 226 { 227 int ret; 228 struct platform_device *pdev; 229 const struct softing_platform_data *pdat; 230 struct resource *pres; 231 struct dev { 232 struct platform_device pdev; 233 struct resource res[2]; 234 } *dev; 235 236 /* find matching platform_data */ 237 pdat = softingcs_find_platform_data(pcmcia->manf_id, pcmcia->card_id); 238 if (!pdat) 239 return -ENOTTY; 240 241 /* setup pcmcia device */ 242 pcmcia->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IOMEM | 243 CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC; 244 ret = pcmcia_loop_config(pcmcia, softingcs_probe_config, (void *)pdat); 245 if (ret) 246 goto pcmcia_failed; 247 248 ret = pcmcia_enable_device(pcmcia); 249 if (ret < 0) 250 goto pcmcia_failed; 251 252 pres = pcmcia->resource[PCMCIA_IOMEM_0]; 253 if (!pres) { 254 ret = -EBADF; 255 goto pcmcia_bad; 256 } 257 258 /* create softing platform device */ 259 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 260 if (!dev) { 261 ret = -ENOMEM; 262 goto mem_failed; 263 } 264 dev->pdev.resource = dev->res; 265 dev->pdev.num_resources = ARRAY_SIZE(dev->res); 266 dev->pdev.dev.release = softingcs_pdev_release; 267 268 pdev = &dev->pdev; 269 pdev->dev.platform_data = (void *)pdat; 270 pdev->dev.parent = &pcmcia->dev; 271 pcmcia->priv = pdev; 272 273 /* platform device resources */ 274 pdev->resource[0].flags = IORESOURCE_MEM; 275 pdev->resource[0].start = pres->start; 276 pdev->resource[0].end = pres->end; 277 278 pdev->resource[1].flags = IORESOURCE_IRQ; 279 pdev->resource[1].start = pcmcia->irq; 280 pdev->resource[1].end = pdev->resource[1].start; 281 282 /* platform device setup */ 283 spin_lock(&softingcs_index_lock); 284 pdev->id = softingcs_index++; 285 spin_unlock(&softingcs_index_lock); 286 pdev->name = "softing"; 287 dev_set_name(&pdev->dev, "softingcs.%i", pdev->id); 288 ret = platform_device_register(pdev); 289 if (ret < 0) 290 goto platform_failed; 291 292 dev_info(&pcmcia->dev, "created %s\n", dev_name(&pdev->dev)); 293 return 0; 294 295 platform_failed: 296 kfree(dev); 297 mem_failed: 298 pcmcia_bad: 299 pcmcia_failed: 300 pcmcia_disable_device(pcmcia); 301 pcmcia->priv = NULL; 302 return ret; 303 } 304 305 static const struct pcmcia_device_id softingcs_ids[] = { 306 /* softing */ 307 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001), 308 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002), 309 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0004), 310 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0005), 311 /* vector, manufacturer? */ 312 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0081), 313 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0084), 314 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0085), 315 /* EDIC */ 316 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0102), 317 PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0105), 318 PCMCIA_DEVICE_NULL, 319 }; 320 321 MODULE_DEVICE_TABLE(pcmcia, softingcs_ids); 322 323 static struct pcmcia_driver softingcs_driver = { 324 .owner = THIS_MODULE, 325 .name = "softingcs", 326 .id_table = softingcs_ids, 327 .probe = softingcs_probe, 328 .remove = softingcs_remove, 329 }; 330 331 module_pcmcia_driver(softingcs_driver); 332 333 MODULE_DESCRIPTION("softing CANcard driver" 334 ", links PCMCIA card to softing driver"); 335 MODULE_LICENSE("GPL v2"); 336