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