Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
kernel-fxtec-pro1x/drivers/isdn/hisax/sedlbauer_cs.c
Dominik Brodowski 0f52e86ded pcmcia: do not request windows if you don't need to 
Several drivers contained dummy code to request for memory windows,
even though they never made use of it. Remove all such code
snippets.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-08-03 09:04:21 +02:00

370 lines
12 KiB
C
Raw Blame History

/*======================================================================
A Sedlbauer PCMCIA client driver
This driver is for the Sedlbauer Speed Star and Speed Star II,
which are ISDN PCMCIA Cards.
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.
Modifications from dummy_cs.c are Copyright (C) 1999-2001 Marcus Niemann
<maniemann@users.sourceforge.net>. 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 <asm/io.h>
#include <asm/system.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include "hisax_cfg.h"
MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Sedlbauer cards");
MODULE_AUTHOR("Marcus Niemann");
MODULE_LICENSE("Dual MPL/GPL");
/*====================================================================*/
/* Parameters that can be set with 'insmod' */
static int protocol = 2; /* EURO-ISDN Default */
module_param(protocol, int, 0);
/*====================================================================*/
/*
The event() function is this driver's Card Services event handler.
It will be called by Card Services when an appropriate card status
event is received. The config() and release() entry points are
used to configure or release a socket, in response to card
insertion and ejection events. They are invoked from the sedlbauer
event handler.
*/
static int sedlbauer_config(struct pcmcia_device *link) __devinit ;
static void sedlbauer_release(struct pcmcia_device *link);
/*
The attach() and detach() entry points are used to create and destroy
"instances" of the driver, where each instance represents everything
needed to manage one actual PCMCIA card.
*/
static void sedlbauer_detach(struct pcmcia_device *p_dev) __devexit;
typedef struct local_info_t {
struct pcmcia_device *p_dev;
int stop;
int cardnr;
} local_info_t;
/*======================================================================
sedlbauer_attach() creates an "instance" of the driver, allocating
local data structures for one device. The device is registered
with Card Services.
The dev_link structure is initialized, but we don't actually
configure the card at this point -- we wait until we receive a
card insertion event.
======================================================================*/
static int __devinit sedlbauer_probe(struct pcmcia_device *link)
{
local_info_t *local;
dev_dbg(&link->dev, "sedlbauer_attach()\n");
/* Allocate space for private device-specific data */
local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
if (!local) return -ENOMEM;
local->cardnr = -1;
local->p_dev = link;
link->priv = local;
/*
General socket configuration defaults can go here. In this
client, we assume very little, and rely on the CIS for almost
everything. In most clients, many details (i.e., number, sizes,
and attributes of IO windows) are fixed by the nature of the
device, and can be hard-wired here.
*/
/* from old sedl_cs
*/
/* The io structure describes IO port mapping */
link->resource[0]->end = 8;
link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
link->conf.Attributes = 0;
link->conf.IntType = INT_MEMORY_AND_IO;
return sedlbauer_config(link);
} /* sedlbauer_attach */
/*======================================================================
This deletes a driver "instance". The device is de-registered
with Card Services. If it has been released, all local data
structures are freed. Otherwise, the structures will be freed
when the device is released.
======================================================================*/
static void __devexit sedlbauer_detach(struct pcmcia_device *link)
{
dev_dbg(&link->dev, "sedlbauer_detach(0x%p)\n", link);
((local_info_t *)link->priv)->stop = 1;
sedlbauer_release(link);
/* This points to the parent local_info_t struct */
kfree(link->priv);
} /* sedlbauer_detach */
/*======================================================================
sedlbauer_config() is scheduled to run after a CARD_INSERTION event
is received, to configure the PCMCIA socket, and to make the
device available to the system.
======================================================================*/
static int sedlbauer_config_check(struct pcmcia_device *p_dev,
cistpl_cftable_entry_t *cfg,
cistpl_cftable_entry_t *dflt,
unsigned int vcc,
void *priv_data)
{
if (cfg->index == 0)
return -ENODEV;
/* Does this card need audio output? */
if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
p_dev->conf.Status = CCSR_AUDIO_ENA;
}
/* Use power settings for Vcc and Vpp if present */
/* Note that the CIS values need to be rescaled */
if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM]/10000)
return -ENODEV;
} else if (dflt->vcc.present & (1<<CISTPL_POWER_VNOM)) {
if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM]/10000)
return -ENODEV;
}
if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
/* IO window settings */
p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
p_dev->resource[0]->start = io->win[0].base;
p_dev->resource[0]->end = io->win[0].len;
p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
p_dev->resource[0]->flags |=
pcmcia_io_cfg_data_width(io->flags);
if (io->nwin > 1) {
p_dev->resource[1]->flags = p_dev->resource[0]->flags;
p_dev->resource[1]->start = io->win[1].base;
p_dev->resource[1]->end = io->win[1].len;
}
/* This reserves IO space but doesn't actually enable it */
p_dev->io_lines = 3;
if (pcmcia_request_io(p_dev) != 0)
return -ENODEV;
}
return 0;
}
static int __devinit sedlbauer_config(struct pcmcia_device *link)
{
int ret;
IsdnCard_t icard;
dev_dbg(&link->dev, "sedlbauer_config(0x%p)\n", link);
/*
In this loop, we scan the CIS for configuration table entries,
each of which describes a valid card configuration, including
voltage, IO window, memory window, and interrupt settings.
We make no assumptions about the card to be configured: we use
just the information available in the CIS. In an ideal world,
this would work for any PCMCIA card, but it requires a complete
and accurate CIS. In practice, a driver usually "knows" most of
these things without consulting the CIS, and most client drivers
will only use the CIS to fill in implementation-defined details.
*/
ret = pcmcia_loop_config(link, sedlbauer_config_check, NULL);
if (ret)
goto failed;
/*
This actually configures the PCMCIA socket -- setting up
the I/O windows and the interrupt mapping, and putting the
card and host interface into "Memory and IO" mode.
*/
ret = pcmcia_request_configuration(link, &link->conf);
if (ret)
goto failed;
/* Finally, report what we've done */
dev_info(&link->dev, "index 0x%02x:",
link->conf.ConfigIndex);
if (link->conf.Vpp)
printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
if (link->conf.Attributes & CONF_ENABLE_IRQ)
printk(", irq %d", link->irq);
if (link->resource[0])
printk(" & %pR", link->resource[0]);
if (link->resource[1])
printk(" & %pR", link->resource[1]);
printk("\n");
icard.para[0] = link->irq;
icard.para[1] = link->resource[0]->start;
icard.protocol = protocol;
icard.typ = ISDN_CTYPE_SEDLBAUER_PCMCIA;
ret = hisax_init_pcmcia(link,
&(((local_info_t *)link->priv)->stop), &icard);
if (ret < 0) {
printk(KERN_ERR "sedlbauer_cs: failed to initialize SEDLBAUER PCMCIA %d with %pR\n",
ret, link->resource[0]);
sedlbauer_release(link);
return -ENODEV;
} else
((local_info_t *)link->priv)->cardnr = ret;
return 0;
failed:
sedlbauer_release(link);
return -ENODEV;
} /* sedlbauer_config */
/*======================================================================
After a card is removed, sedlbauer_release() will unregister the
device, and release the PCMCIA configuration. If the device is
still open, this will be postponed until it is closed.
======================================================================*/
static void sedlbauer_release(struct pcmcia_device *link)
{
local_info_t *local = link->priv;
dev_dbg(&link->dev, "sedlbauer_release(0x%p)\n", link);
if (local) {
if (local->cardnr >= 0) {
/* no unregister function with hisax */
HiSax_closecard(local->cardnr);
}
}
pcmcia_disable_device(link);
} /* sedlbauer_release */
static int sedlbauer_suspend(struct pcmcia_device *link)
{
local_info_t *dev = link->priv;
dev->stop = 1;
return 0;
}
static int sedlbauer_resume(struct pcmcia_device *link)
{
local_info_t *dev = link->priv;
dev->stop = 0;
return 0;
}
static struct pcmcia_device_id sedlbauer_ids[] = {
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "speed star II", "V 3.1", 0x81fb79f5, 0xf3612e1d, 0x6b95c78a),
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D67", 0x81fb79f5, 0xe4e9bc12, 0x397b7e90),
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D98", 0x81fb79f5, 0xe4e9bc12, 0x2e5c7fce),
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (C) 93-94 VK", 0x81fb79f5, 0xe4e9bc12, 0x8db143fe),
PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (c) 93-95 VK", 0x81fb79f5, 0xe4e9bc12, 0xb391ab4c),
PCMCIA_DEVICE_PROD_ID12("HST High Soft Tech GmbH", "Saphir II B", 0xd79e0b84, 0x21d083ae),
/* PCMCIA_DEVICE_PROD_ID1234("SEDLBAUER", 0x81fb79f5), */ /* too generic*/
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, sedlbauer_ids);
static struct pcmcia_driver sedlbauer_driver = {
.owner = THIS_MODULE,
.drv = {
.name = "sedlbauer_cs",
},
.probe = sedlbauer_probe,
.remove = __devexit_p(sedlbauer_detach),
.id_table = sedlbauer_ids,
.suspend = sedlbauer_suspend,
.resume = sedlbauer_resume,
};
static int __init init_sedlbauer_cs(void)
{
return pcmcia_register_driver(&sedlbauer_driver);
}
static void __exit exit_sedlbauer_cs(void)
{
pcmcia_unregister_driver(&sedlbauer_driver);
}
module_init(init_sedlbauer_cs);
module_exit(exit_sedlbauer_cs);
Reference in a new issue View git blame Copy permalink