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Commit 0a0b7a5f authored by Kurt Van Dijck's avatar Kurt Van Dijck Committed by David S. Miller
Browse files

can: add driver for Softing card 



This patch adds the driver that creates a platform:softing device
from a pcmcia_device
Note: the Kconfig indicates a dependency on the softing.ko driver,
but this is purely to make configuration intuitive. This driver will
work independent, but no CAN network devices appear until softing.ko is
loaded too.

Signed-off-by: default avatarKurt Van Dijck <kurt.van.dijck@eia.be>
Acked-by: default avatarWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 03fd3cf5

drivers/net/can/softing/Kconfig

+14 −0
Original line number Diff line number Diff line
@@ -14,3 +14,17 @@ config CAN_SOFTING 
	  controls the 2 busses on the card together.

	  As such, some actions (start/stop/busoff recovery) on 1 bus

	  must bring down the other bus too temporarily.



config CAN_SOFTING_CS

	tristate "Softing Gmbh CAN pcmcia cards"

	depends on PCMCIA

	select CAN_SOFTING

	---help---

	  Support for PCMCIA cards from Softing Gmbh & some cards

	  from Vector Gmbh.

	  You need firmware for these, which you can get at

	  http://developer.berlios.de/projects/socketcan/

	  This version of the driver is written against

	  firmware version 4.6 (softing-fw-4.6-binaries.tar.gz)

	  In order to use the card as CAN device, you need the Softing generic

	  support too.

drivers/net/can/softing/Makefile

+1 −0
Original line number Diff line number Diff line 


softing-y := softing_main.o softing_fw.o

obj-$(CONFIG_CAN_SOFTING) += softing.o

obj-$(CONFIG_CAN_SOFTING_CS) += softing_cs.o



ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG

drivers/net/can/softing/softing_cs.c

0 → 100644
+359 −0
Original line number Diff line number Diff line 
/*

 * 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, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 */



#include <linux/module.h>

#include <linux/kernel.h>



#include <pcmcia/cistpl.h>

#include <pcmcia/ds.h>



#include "softing_platform.h"



static int softingcs_index;

static spinlock_t 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 __devinit 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 __devinit 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 __devexit 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 __devinit 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		= __devexit_p(softingcs_remove),

};



static int __init softingcs_start(void)

{

	spin_lock_init(&softingcs_index_lock);

	return pcmcia_register_driver(&softingcs_driver);

}



static void __exit softingcs_stop(void)

{

	pcmcia_unregister_driver(&softingcs_driver);

}



module_init(softingcs_start);

module_exit(softingcs_stop);



MODULE_DESCRIPTION("softing CANcard driver"

		", links PCMCIA card to softing driver");

MODULE_LICENSE("GPL v2");