text: /*
   * Copyright (C) 2008-2010
   *
   * - Kurt Van Dijck, EIA Electronics
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the version 2 of the GNU General Public License
   * as published by the Free Software Foundation
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see <http://www.gnu.org/licenses/>.
   */
  
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/slab.h>
  
  #include <pcmcia/cistpl.h>
  #include <pcmcia/ds.h>
  
  #include "softing_platform.h"
  
  static int softingcs_index;
  static DEFINE_SPINLOCK(softingcs_index_lock);
  
  static int softingcs_reset(struct platform_device *pdev, int v);
  static int softingcs_enable_irq(struct platform_device *pdev, int v);
  
  /*
   * platform_data descriptions
   */
  #define MHZ (1000*1000)
  static const struct softing_platform_data softingcs_platform_data[] = {
  {
  	.name = "CANcard",
  	.manf = 0x0168, .prod = 0x001,
  	.generation = 1,
  	.nbus = 2,
  	.freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4,
  	.dpram_size = 0x0800,
  	.boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = softingcs_enable_irq,
  }, {
  	.name = "CANcard-NEC",
  	.manf = 0x0168, .prod = 0x002,
  	.generation = 1,
  	.nbus = 2,
  	.freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4,
  	.dpram_size = 0x0800,
  	.boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = softingcs_enable_irq,
  }, {
  	.name = "CANcard-SJA",
  	.manf = 0x0168, .prod = 0x004,
  	.generation = 1,
  	.nbus = 2,
  	.freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
  	.dpram_size = 0x0800,
  	.boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = softingcs_enable_irq,
  }, {
  	.name = "CANcard-2",
  	.manf = 0x0168, .prod = 0x005,
  	.generation = 2,
  	.nbus = 2,
  	.freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
  	.dpram_size = 0x1000,
  	.boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = NULL,
  }, {
  	.name = "Vector-CANcard",
  	.manf = 0x0168, .prod = 0x081,
  	.generation = 1,
  	.nbus = 2,
  	.freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
  	.dpram_size = 0x0800,
  	.boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = softingcs_enable_irq,
  }, {
  	.name = "Vector-CANcard-SJA",
  	.manf = 0x0168, .prod = 0x084,
  	.generation = 1,
  	.nbus = 2,
  	.freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
  	.dpram_size = 0x0800,
  	.boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = softingcs_enable_irq,
  }, {
  	.name = "Vector-CANcard-2",
  	.manf = 0x0168, .prod = 0x085,
  	.generation = 2,
  	.nbus = 2,
  	.freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
  	.dpram_size = 0x1000,
  	.boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = NULL,
  }, {
  	.name = "EDICcard-NEC",
  	.manf = 0x0168, .prod = 0x102,
  	.generation = 1,
  	.nbus = 2,
  	.freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
  	.dpram_size = 0x0800,
  	.boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = softingcs_enable_irq,
  }, {
  	.name = "EDICcard-2",
  	.manf = 0x0168, .prod = 0x105,
  	.generation = 2,
  	.nbus = 2,
  	.freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
  	.dpram_size = 0x1000,
  	.boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
  	.load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
  	.app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
  	.reset = softingcs_reset,
  	.enable_irq = NULL,
  }, {
  	0, 0,
  },
  };
  
  MODULE_FIRMWARE(fw_dir "bcard.bin");
  MODULE_FIRMWARE(fw_dir "ldcard.bin");
  MODULE_FIRMWARE(fw_dir "cancard.bin");
  MODULE_FIRMWARE(fw_dir "cansja.bin");
  
  MODULE_FIRMWARE(fw_dir "bcard2.bin");
  MODULE_FIRMWARE(fw_dir "ldcard2.bin");
  MODULE_FIRMWARE(fw_dir "cancrd2.bin");
  
  static const struct softing_platform_data
  *softingcs_find_platform_data(unsigned int manf, unsigned int prod)
  {
  	const struct softing_platform_data *lp;
  
  	for (lp = softingcs_platform_data; lp->manf; ++lp) {
  		if ((lp->manf == manf) && (lp->prod == prod))
  			return lp;
  	}
  	return NULL;
  }
  
  /*
   * platformdata callbacks
   */
  static int softingcs_reset(struct platform_device *pdev, int v)
  {
  	struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
  
  	dev_dbg(&pdev->dev, "pcmcia config [2] %02x\n", v ? 0 : 0x20);
  	return pcmcia_write_config_byte(pcmcia, 2, v ? 0 : 0x20);
  }
  
  static int softingcs_enable_irq(struct platform_device *pdev, int v)
  {
  	struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
  
  	dev_dbg(&pdev->dev, "pcmcia config [0] %02x\n", v ? 0x60 : 0);
  	return pcmcia_write_config_byte(pcmcia, 0, v ? 0x60 : 0);
  }
  
  /*
   * pcmcia check
   */
  static int softingcs_probe_config(struct pcmcia_device *pcmcia, void *priv_data)
  {
  	struct softing_platform_data *pdat = priv_data;
  	struct resource *pres;
  	int memspeed = 0;
  
  	WARN_ON(!pdat);
  	pres = pcmcia->resource[PCMCIA_IOMEM_0];
  	if (resource_size(pres) < 0x1000)
  		return -ERANGE;
  
  	pres->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
  	if (pdat->generation < 2) {
  		pres->flags |= WIN_USE_WAIT | WIN_DATA_WIDTH_8;
  		memspeed = 3;
  	} else {
  		pres->flags |= WIN_DATA_WIDTH_16;
  	}
  	return pcmcia_request_window(pcmcia, pres, memspeed);
  }
  
  static void softingcs_remove(struct pcmcia_device *pcmcia)
  {
  	struct platform_device *pdev = pcmcia->priv;
  
  	/* free bits */
  	platform_device_unregister(pdev);
  	/* release pcmcia stuff */
  	pcmcia_disable_device(pcmcia);
  }
  
  /*
   * platform_device wrapper
   * pdev->resource has 2 entries: io & irq
   */
  static void softingcs_pdev_release(struct device *dev)
  {
  	struct platform_device *pdev = to_platform_device(dev);
  	kfree(pdev);
  }
  
  static int softingcs_probe(struct pcmcia_device *pcmcia)
  {
  	int ret;
  	struct platform_device *pdev;
  	const struct softing_platform_data *pdat;
  	struct resource *pres;
  	struct dev {
  		struct platform_device pdev;
  		struct resource res[2];
  	} *dev;
  
  	/* find matching platform_data */
  	pdat = softingcs_find_platform_data(pcmcia->manf_id, pcmcia->card_id);
  	if (!pdat)
  		return -ENOTTY;
  
  	/* setup pcmcia device */
  	pcmcia->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IOMEM |
  		CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
  	ret = pcmcia_loop_config(pcmcia, softingcs_probe_config, (void *)pdat);
  	if (ret)
  		goto pcmcia_failed;
  
  	ret = pcmcia_enable_device(pcmcia);
  	if (ret < 0)
  		goto pcmcia_failed;
  
  	pres = pcmcia->resource[PCMCIA_IOMEM_0];
  	if (!pres) {
  		ret = -EBADF;
  		goto pcmcia_bad;
  	}
  
  	/* create softing platform device */
  	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
  	if (!dev) {
  		ret = -ENOMEM;
  		goto mem_failed;
  	}
  	dev->pdev.resource = dev->res;
  	dev->pdev.num_resources = ARRAY_SIZE(dev->res);
  	dev->pdev.dev.release = softingcs_pdev_release;
  
  	pdev = &dev->pdev;
  	pdev->dev.platform_data = (void *)pdat;
  	pdev->dev.parent = &pcmcia->dev;
  	pcmcia->priv = pdev;
  
  	/* platform device resources */
  	pdev->resource[0].flags = IORESOURCE_MEM;
  	pdev->resource[0].start = pres->start;
  	pdev->resource[0].end = pres->end;
  
  	pdev->resource[1].flags = IORESOURCE_IRQ;
  	pdev->resource[1].start = pcmcia->irq;
  	pdev->resource[1].end = pdev->resource[1].start;
  
  	/* platform device setup */
  	spin_lock(&softingcs_index_lock);
  	pdev->id = softingcs_index++;
  	spin_unlock(&softingcs_index_lock);
  	pdev->name = "softing";
  	dev_set_name(&pdev->dev, "softingcs.%i", pdev->id);
  	ret = platform_device_register(pdev);
  	if (ret < 0)
  		goto platform_failed;
  
  	dev_info(&pcmcia->dev, "created %s\n", dev_name(&pdev->dev));
  	return 0;
  
  platform_failed:
  	kfree(dev);
  mem_failed:
  pcmcia_bad:
  pcmcia_failed:
  	pcmcia_disable_device(pcmcia);
  	pcmcia->priv = NULL;
  	return ret ?: -ENODEV;
  }
  
  static const struct pcmcia_device_id softingcs_ids[] = {
  	/* softing */
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001),
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002),
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0004),
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0005),
  	/* vector, manufacturer? */
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0081),
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0084),
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0085),
  	/* EDIC */
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0102),
  	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0105),
  	PCMCIA_DEVICE_NULL,
  };
  
  MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
  
  static struct pcmcia_driver softingcs_driver = {
  	.owner		= THIS_MODULE,
  	.name		= "softingcs",
  	.id_table	= softingcs_ids,
  	.probe		= softingcs_probe,
  	.remove		= softingcs_remove,
  };
  
  module_pcmcia_driver(softingcs_driver);
  
  MODULE_DESCRIPTION("softing CANcard driver"
  		", links PCMCIA card to softing driver");
  MODULE_LICENSE("GPL v2");
  