summaryrefslogtreecommitdiffstats
path: root/drivers/parport/parport_cs.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/parport/parport_cs.c')
-rw-r--r--drivers/parport/parport_cs.c195
1 files changed, 195 insertions, 0 deletions
diff --git a/drivers/parport/parport_cs.c b/drivers/parport/parport_cs.c
new file mode 100644
index 000000000..8e7e3ac4b
--- /dev/null
+++ b/drivers/parport/parport_cs.c
@@ -0,0 +1,195 @@
+/*======================================================================
+
+ A driver for PCMCIA parallel port adapters
+
+ (specifically, for the Quatech SPP-100 EPP card: other cards will
+ probably require driver tweaks)
+
+ parport_cs.c 1.29 2002/10/11 06:57:41
+
+ The contents of this file are subject to the Mozilla Public
+ License Version 1.1 (the "License"); you may not use this file
+ except in compliance with the License. You may obtain a copy of
+ the License at http://www.mozilla.org/MPL/
+
+ Software distributed under the License is distributed on an "AS
+ IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ rights and limitations under the License.
+
+ The initial developer of the original code is David A. Hinds
+ <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+
+ Alternatively, the contents of this file may be used under the
+ terms of the GNU General Public License version 2 (the "GPL"), in
+ which case the provisions of the GPL are applicable instead of the
+ above. If you wish to allow the use of your version of this file
+ only under the terms of the GPL and not to allow others to use
+ your version of this file under the MPL, indicate your decision
+ by deleting the provisions above and replace them with the notice
+ and other provisions required by the GPL. If you do not delete
+ the provisions above, a recipient may use your version of this
+ file under either the MPL or the GPL.
+
+======================================================================*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/major.h>
+#include <linux/interrupt.h>
+
+#include <linux/parport.h>
+#include <linux/parport_pc.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ciscode.h>
+
+/*====================================================================*/
+
+/* Module parameters */
+
+MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
+MODULE_DESCRIPTION("PCMCIA parallel port card driver");
+MODULE_LICENSE("Dual MPL/GPL");
+
+#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
+
+INT_MODULE_PARM(epp_mode, 1);
+
+
+/*====================================================================*/
+
+#define FORCE_EPP_MODE 0x08
+
+typedef struct parport_info_t {
+ struct pcmcia_device *p_dev;
+ int ndev;
+ struct parport *port;
+} parport_info_t;
+
+static void parport_detach(struct pcmcia_device *p_dev);
+static int parport_config(struct pcmcia_device *link);
+static void parport_cs_release(struct pcmcia_device *);
+
+static int parport_probe(struct pcmcia_device *link)
+{
+ parport_info_t *info;
+
+ dev_dbg(&link->dev, "parport_attach()\n");
+
+ /* Create new parport device */
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) return -ENOMEM;
+ link->priv = info;
+ info->p_dev = link;
+
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+
+ return parport_config(link);
+} /* parport_attach */
+
+static void parport_detach(struct pcmcia_device *link)
+{
+ dev_dbg(&link->dev, "parport_detach\n");
+
+ parport_cs_release(link);
+
+ kfree(link->priv);
+} /* parport_detach */
+
+static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data)
+{
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+ p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
+
+ return pcmcia_request_io(p_dev);
+}
+
+static int parport_config(struct pcmcia_device *link)
+{
+ parport_info_t *info = link->priv;
+ struct parport *p;
+ int ret;
+
+ dev_dbg(&link->dev, "parport_config\n");
+
+ if (epp_mode)
+ link->config_index |= FORCE_EPP_MODE;
+
+ ret = pcmcia_loop_config(link, parport_config_check, NULL);
+ if (ret)
+ goto failed;
+
+ if (!link->irq)
+ goto failed;
+ ret = pcmcia_enable_device(link);
+ if (ret)
+ goto failed;
+
+ p = parport_pc_probe_port(link->resource[0]->start,
+ link->resource[1]->start,
+ link->irq, PARPORT_DMA_NONE,
+ &link->dev, IRQF_SHARED);
+ if (p == NULL) {
+ pr_notice("parport_cs: parport_pc_probe_port() at 0x%3x, irq %u failed\n",
+ (unsigned int)link->resource[0]->start, link->irq);
+ goto failed;
+ }
+
+ p->modes |= PARPORT_MODE_PCSPP;
+ if (epp_mode)
+ p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
+ info->ndev = 1;
+ info->port = p;
+
+ return 0;
+
+failed:
+ parport_cs_release(link);
+ kfree(link->priv);
+ return -ENODEV;
+} /* parport_config */
+
+static void parport_cs_release(struct pcmcia_device *link)
+{
+ parport_info_t *info = link->priv;
+
+ dev_dbg(&link->dev, "parport_release\n");
+
+ if (info->ndev) {
+ struct parport *p = info->port;
+ parport_pc_unregister_port(p);
+ }
+ info->ndev = 0;
+
+ pcmcia_disable_device(link);
+} /* parport_cs_release */
+
+
+static const struct pcmcia_device_id parport_ids[] = {
+ PCMCIA_DEVICE_FUNC_ID(3),
+ PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
+ PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, parport_ids);
+
+static struct pcmcia_driver parport_cs_driver = {
+ .owner = THIS_MODULE,
+ .name = "parport_cs",
+ .probe = parport_probe,
+ .remove = parport_detach,
+ .id_table = parport_ids,
+};
+module_pcmcia_driver(parport_cs_driver);