| 1 | /*====================================================================== |
| 2 | |
| 3 | A driver for PCMCIA parallel port adapters |
| 4 | |
| 5 | (specifically, for the Quatech SPP-100 EPP card: other cards will |
| 6 | probably require driver tweaks) |
| 7 | |
| 8 | parport_cs.c 1.29 2002/10/11 06:57:41 |
| 9 | |
| 10 | The contents of this file are subject to the Mozilla Public |
| 11 | License Version 1.1 (the "License"); you may not use this file |
| 12 | except in compliance with the License. You may obtain a copy of |
| 13 | the License at http://www.mozilla.org/MPL/ |
| 14 | |
| 15 | Software distributed under the License is distributed on an "AS |
| 16 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| 17 | implied. See the License for the specific language governing |
| 18 | rights and limitations under the License. |
| 19 | |
| 20 | The initial developer of the original code is David A. Hinds |
| 21 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
| 22 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
| 23 | |
| 24 | Alternatively, the contents of this file may be used under the |
| 25 | terms of the GNU General Public License version 2 (the "GPL"), in |
| 26 | which case the provisions of the GPL are applicable instead of the |
| 27 | above. If you wish to allow the use of your version of this file |
| 28 | only under the terms of the GPL and not to allow others to use |
| 29 | your version of this file under the MPL, indicate your decision |
| 30 | by deleting the provisions above and replace them with the notice |
| 31 | and other provisions required by the GPL. If you do not delete |
| 32 | the provisions above, a recipient may use your version of this |
| 33 | file under either the MPL or the GPL. |
| 34 | |
| 35 | ======================================================================*/ |
| 36 | |
| 37 | #include <linux/kernel.h> |
| 38 | #include <linux/module.h> |
| 39 | #include <linux/init.h> |
| 40 | #include <linux/ptrace.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/string.h> |
| 43 | #include <linux/timer.h> |
| 44 | #include <linux/ioport.h> |
| 45 | #include <linux/major.h> |
| 46 | #include <linux/interrupt.h> |
| 47 | |
| 48 | #include <linux/parport.h> |
| 49 | #include <linux/parport_pc.h> |
| 50 | |
| 51 | #include <pcmcia/cistpl.h> |
| 52 | #include <pcmcia/ds.h> |
| 53 | #include <pcmcia/cisreg.h> |
| 54 | #include <pcmcia/ciscode.h> |
| 55 | |
| 56 | /*====================================================================*/ |
| 57 | |
| 58 | /* Module parameters */ |
| 59 | |
| 60 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| 61 | MODULE_DESCRIPTION("PCMCIA parallel port card driver"); |
| 62 | MODULE_LICENSE("Dual MPL/GPL"); |
| 63 | |
| 64 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
| 65 | |
| 66 | INT_MODULE_PARM(epp_mode, 1); |
| 67 | |
| 68 | |
| 69 | /*====================================================================*/ |
| 70 | |
| 71 | #define FORCE_EPP_MODE 0x08 |
| 72 | |
| 73 | typedef struct parport_info_t { |
| 74 | struct pcmcia_device *p_dev; |
| 75 | int ndev; |
| 76 | struct parport *port; |
| 77 | } parport_info_t; |
| 78 | |
| 79 | static void parport_detach(struct pcmcia_device *p_dev); |
| 80 | static int parport_config(struct pcmcia_device *link); |
| 81 | static void parport_cs_release(struct pcmcia_device *); |
| 82 | |
| 83 | static int parport_probe(struct pcmcia_device *link) |
| 84 | { |
| 85 | parport_info_t *info; |
| 86 | |
| 87 | dev_dbg(&link->dev, "parport_attach()\n"); |
| 88 | |
| 89 | /* Create new parport device */ |
| 90 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 91 | if (!info) return -ENOMEM; |
| 92 | link->priv = info; |
| 93 | info->p_dev = link; |
| 94 | |
| 95 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
| 96 | |
| 97 | return parport_config(link); |
| 98 | } /* parport_attach */ |
| 99 | |
| 100 | static void parport_detach(struct pcmcia_device *link) |
| 101 | { |
| 102 | dev_dbg(&link->dev, "parport_detach\n"); |
| 103 | |
| 104 | parport_cs_release(link); |
| 105 | |
| 106 | kfree(link->priv); |
| 107 | } /* parport_detach */ |
| 108 | |
| 109 | static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data) |
| 110 | { |
| 111 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
| 112 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
| 113 | p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; |
| 114 | p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; |
| 115 | |
| 116 | return pcmcia_request_io(p_dev); |
| 117 | } |
| 118 | |
| 119 | static int parport_config(struct pcmcia_device *link) |
| 120 | { |
| 121 | parport_info_t *info = link->priv; |
| 122 | struct parport *p; |
| 123 | int ret; |
| 124 | |
| 125 | dev_dbg(&link->dev, "parport_config\n"); |
| 126 | |
| 127 | if (epp_mode) |
| 128 | link->config_index |= FORCE_EPP_MODE; |
| 129 | |
| 130 | ret = pcmcia_loop_config(link, parport_config_check, NULL); |
| 131 | if (ret) |
| 132 | goto failed; |
| 133 | |
| 134 | if (!link->irq) |
| 135 | goto failed; |
| 136 | ret = pcmcia_enable_device(link); |
| 137 | if (ret) |
| 138 | goto failed; |
| 139 | |
| 140 | p = parport_pc_probe_port(link->resource[0]->start, |
| 141 | link->resource[1]->start, |
| 142 | link->irq, PARPORT_DMA_NONE, |
| 143 | &link->dev, IRQF_SHARED); |
| 144 | if (p == NULL) { |
| 145 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " |
| 146 | "0x%3x, irq %u failed\n", |
| 147 | (unsigned int) link->resource[0]->start, |
| 148 | link->irq); |
| 149 | goto failed; |
| 150 | } |
| 151 | |
| 152 | p->modes |= PARPORT_MODE_PCSPP; |
| 153 | if (epp_mode) |
| 154 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; |
| 155 | info->ndev = 1; |
| 156 | info->port = p; |
| 157 | |
| 158 | return 0; |
| 159 | |
| 160 | failed: |
| 161 | parport_cs_release(link); |
| 162 | return -ENODEV; |
| 163 | } /* parport_config */ |
| 164 | |
| 165 | static void parport_cs_release(struct pcmcia_device *link) |
| 166 | { |
| 167 | parport_info_t *info = link->priv; |
| 168 | |
| 169 | dev_dbg(&link->dev, "parport_release\n"); |
| 170 | |
| 171 | if (info->ndev) { |
| 172 | struct parport *p = info->port; |
| 173 | parport_pc_unregister_port(p); |
| 174 | } |
| 175 | info->ndev = 0; |
| 176 | |
| 177 | pcmcia_disable_device(link); |
| 178 | } /* parport_cs_release */ |
| 179 | |
| 180 | |
| 181 | static const struct pcmcia_device_id parport_ids[] = { |
| 182 | PCMCIA_DEVICE_FUNC_ID(3), |
| 183 | PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc), |
| 184 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), |
| 185 | PCMCIA_DEVICE_NULL |
| 186 | }; |
| 187 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); |
| 188 | |
| 189 | static struct pcmcia_driver parport_cs_driver = { |
| 190 | .owner = THIS_MODULE, |
| 191 | .name = "parport_cs", |
| 192 | .probe = parport_probe, |
| 193 | .remove = parport_detach, |
| 194 | .id_table = parport_ids, |
| 195 | }; |
| 196 | module_pcmcia_driver(parport_cs_driver); |