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linux/drivers/telephony/ixj_pcmcia.c
Dominik Brodowski f8cfa618dc [PATCH] pcmcia: unify attach, EVENT_CARD_INSERTION handlers into one probe callback 
Unify the EVENT_CARD_INSERTION and "attach" callbacks to one unified
probe() callback. As all in-kernel drivers are changed to this new
callback, there will be no temporary backwards-compatibility. Inside a
probe() function, each driver _must_ set struct pcmcia_device
*p_dev->instance and instance->handle correctly.

With these patches, the basic driver interface for 16-bit PCMCIA drivers
now has the classic four callbacks known also from other buses:

        int (*probe)            (struct pcmcia_device *dev);
        void (*remove)          (struct pcmcia_device *dev);

        int (*suspend)          (struct pcmcia_device *dev);
        int (*resume)           (struct pcmcia_device *dev);

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2006-01-06 00:03:24 +01:00

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#include "ixj-ver.h"
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/kernel.h> /* printk() */
#include <linux/fs.h> /* everything... */
#include <linux/errno.h> /* error codes */
#include <linux/slab.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include "ixj.h"
/*
* PCMCIA service support for Quicknet cards
*/
#ifdef PCMCIA_DEBUG
static int pc_debug = PCMCIA_DEBUG;
module_param(pc_debug, int, 0644);
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
#else
#define DEBUG(n, args...)
#endif
typedef struct ixj_info_t {
int ndev;
dev_node_t node;
struct ixj *port;
} ixj_info_t;
static void ixj_detach(struct pcmcia_device *p_dev);
static void ixj_config(dev_link_t * link);
static void ixj_cs_release(dev_link_t * link);
static int ixj_attach(struct pcmcia_device *p_dev)
{
dev_link_t *link;
DEBUG(0, "ixj_attach()\n");
/* Create new ixj device */
link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
if (!link)
return -ENOMEM;
memset(link, 0, sizeof(struct dev_link_t));
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
link->io.IOAddrLines = 3;
link->conf.Vcc = 50;
link->conf.IntType = INT_MEMORY_AND_IO;
link->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
if (!link->priv) {
kfree(link);
return -ENOMEM;
}
memset(link->priv, 0, sizeof(struct ixj_info_t));
link->handle = p_dev;
p_dev->instance = link;
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
ixj_config(link);
return 0;
}
static void ixj_detach(struct pcmcia_device *p_dev)
{
dev_link_t *link = dev_to_instance(p_dev);
DEBUG(0, "ixj_detach(0x%p)\n", link);
link->state &= ~DEV_RELEASE_PENDING;
if (link->state & DEV_CONFIG)
ixj_cs_release(link);
kfree(link->priv);
kfree(link);
}
#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
static void ixj_get_serial(dev_link_t * link, IXJ * j)
{
client_handle_t handle;
tuple_t tuple;
u_short buf[128];
char *str;
int last_ret, last_fn, i, place;
handle = link->handle;
DEBUG(0, "ixj_get_serial(0x%p)\n", link);
tuple.TupleData = (cisdata_t *) buf;
tuple.TupleOffset = 0;
tuple.TupleDataMax = 80;
tuple.Attributes = 0;
tuple.DesiredTuple = CISTPL_VERS_1;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
str = (char *) buf;
printk("PCMCIA Version %d.%d\n", str[0], str[1]);
str += 2;
printk("%s", str);
str = str + strlen(str) + 1;
printk(" %s", str);
str = str + strlen(str) + 1;
place = 1;
for (i = strlen(str) - 1; i >= 0; i--) {
switch (str[i]) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
j->serial += (str[i] - 48) * place;
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
j->serial += (str[i] - 55) * place;
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
j->serial += (str[i] - 87) * place;
break;
}
place = place * 0x10;
}
str = str + strlen(str) + 1;
printk(" version %s\n", str);
cs_failed:
return;
}
static void ixj_config(dev_link_t * link)
{
IXJ *j;
client_handle_t handle;
ixj_info_t *info;
tuple_t tuple;
u_short buf[128];
cisparse_t parse;
config_info_t conf;
cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
cistpl_cftable_entry_t dflt =
{
0
};
int last_ret, last_fn;
handle = link->handle;
info = link->priv;
DEBUG(0, "ixj_config(0x%p)\n", link);
tuple.TupleData = (cisdata_t *) buf;
tuple.TupleOffset = 0;
tuple.TupleDataMax = 255;
tuple.Attributes = 0;
tuple.DesiredTuple = CISTPL_CONFIG;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
link->state |= DEV_CONFIG;
CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
tuple.Attributes = 0;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
while (1) {
if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
goto next_entry;
if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
link->conf.ConfigIndex = cfg->index;
link->io.BasePort1 = io->win[0].base;
link->io.NumPorts1 = io->win[0].len;
if (io->nwin == 2) {
link->io.BasePort2 = io->win[1].base;
link->io.NumPorts2 = io->win[1].len;
}
if (pcmcia_request_io(link->handle, &link->io) != 0)
goto next_entry;
/* If we've got this far, we're done */
break;
}
next_entry:
if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
dflt = *cfg;
CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
}
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
/*
* Register the card with the core.
*/
j=ixj_pcmcia_probe(link->io.BasePort1,link->io.BasePort1 + 0x10);
info->ndev = 1;
info->node.major = PHONE_MAJOR;
link->dev = &info->node;
ixj_get_serial(link, j);
link->state &= ~DEV_CONFIG_PENDING;
return;
cs_failed:
cs_error(link->handle, last_fn, last_ret);
ixj_cs_release(link);
}
static void ixj_cs_release(dev_link_t *link)
{
ixj_info_t *info = link->priv;
DEBUG(0, "ixj_cs_release(0x%p)\n", link);
info->ndev = 0;
link->dev = NULL;
pcmcia_release_configuration(link->handle);
pcmcia_release_io(link->handle, &link->io);
link->state &= ~DEV_CONFIG;
}
static int ixj_suspend(struct pcmcia_device *dev)
{
dev_link_t *link = dev_to_instance(dev);
link->state |= DEV_SUSPEND;
if (link->state & DEV_CONFIG)
pcmcia_release_configuration(link->handle);
return 0;
}
static int ixj_resume(struct pcmcia_device *dev)
{
dev_link_t *link = dev_to_instance(dev);
link->state &= ~DEV_SUSPEND;
if (DEV_OK(link))
pcmcia_request_configuration(link->handle, &link->conf);
return 0;
}
static struct pcmcia_device_id ixj_ids[] = {
PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, ixj_ids);
static struct pcmcia_driver ixj_driver = {
.owner = THIS_MODULE,
.drv = {
.name = "ixj_cs",
},
.probe = ixj_attach,
.remove = ixj_detach,
.id_table = ixj_ids,
.suspend = ixj_suspend,
.resume = ixj_resume,
};
static int __init ixj_pcmcia_init(void)
{
return pcmcia_register_driver(&ixj_driver);
}
static void ixj_pcmcia_exit(void)
{
pcmcia_unregister_driver(&ixj_driver);
}
module_init(ixj_pcmcia_init);
module_exit(ixj_pcmcia_exit);
MODULE_LICENSE("GPL");
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