/*
* PCMCIA driver for SL811HS (as found in REX-CFU1U)
* Filename: sl811_cs.c
* Author: Yukio Yamamoto
*
* Port to sl811-hcd and 2.6.x by
* Botond Botyanszki <boti@rocketmail.com>
* Simon Pickering
*
* Last update: 2005-05-12
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <linux/usb/sl811.h>
MODULE_AUTHOR("Botond Botyanszki");
MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
MODULE_LICENSE("GPL");
/*====================================================================*/
/* MACROS */
/*====================================================================*/
#if defined(DEBUG) || defined(PCMCIA_DEBUG)
static int pc_debug = 0;
module_param(pc_debug, int, 0644);
#define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
#else
#define DBG(n, args...) do{}while(0)
#endif /* no debugging */
#define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
#define CS_CHECK(fn, ret) \
do { \
last_fn = (fn); \
if ((last_ret = (ret)) != 0) \
goto cs_failed; \
} while (0)
/*====================================================================*/
/* VARIABLES */
/*====================================================================*/
static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
typedef struct local_info_t {
struct pcmcia_device *p_dev;
dev_node_t node;
} local_info_t;
static void sl811_cs_release(struct pcmcia_device * link);
/*====================================================================*/
static void release_platform_dev(struct device * dev)
{
DBG(0, "sl811_cs platform_dev release\n");
dev->parent = NULL;
}
static struct sl811_platform_data platform_data = {
.potpg = 100,
.power = 50, /* == 100mA */
// .reset = ... FIXME: invoke CF reset on the card
};
static struct resource resources[] = {
[0] = {
.flags = IORESOURCE_IRQ,
},
[1] = {
// .name = "address",
.flags = IORESOURCE_IO,
},
[2] = {
// .name = "data",
.flags = IORESOURCE_IO,
},
};
extern struct platform_driver sl811h_driver;
static struct platform_device platform_dev = {
.id = -1,
.dev = {
.platform_data = &platform_data,
.release = release_platform_dev,
},
.resource = resources,
.num_resources = ARRAY_SIZE(resources),
};
static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
{
if (platform_dev.dev.parent)
return -EBUSY;
platform_dev.dev.parent = parent;
/* finish seting up the platform device */
resources[0].start = irq;
resources[1].start = base_addr;
resources[1].end = base_addr;
resources[2].start = base_addr + 1;
resources[2].end = base_addr + 1;
/* The driver core will probe for us. We know sl811-hcd has been
* initialized already because of the link order dependency created
* by referencing "sl811h_driver".
*/
platform_dev.name = sl811h_driver.driver.name;
return platform_device_register(&platform_dev);
}
/*====================================================================*/
static void sl811_cs_detach(struct pcmcia_device *link)
{
DBG(0, "sl811_cs_detach(0x%p)\n", link);
sl811_cs_release(link);
/* This points to the parent local_info_t struct */
kfree(link->priv);
}
static void sl811_cs_release(struct pcmcia_device * link)
{
DBG(0, "sl811_cs_release(0x%p)\n", link);
pcmcia_disable_device(link);
platform_device_unregister(&platform_dev);
}
static int sl811_cs_config(struct pcmcia_device *link)
{
struct device *parent = &handle_to_dev(link);
local_info_t *dev = link->priv;
tuple_t tuple;
cisparse_t parse;
int last_fn, last_ret;
u_char buf[64];
config_info_t conf;
cistpl_cftable_entry_t dflt = { 0 };
DBG(0, "sl811_cs_config(0x%p)\n", link);
/* Look up the current Vcc */
CS_CHECK(GetConfigurationInfo,
pcmcia_get_configuration_info(link, &conf));
tuple.Attributes = 0;
tuple.TupleData = buf;
tuple.TupleDataMax = sizeof(buf);
tuple.TupleOffset = 0;
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
while (1) {
cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
if (pcmcia_get_tuple_data(link, &tuple) != 0
|| pcmcia_parse_tuple(link, &tuple, &parse)
!= 0)
goto next_entry;
if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
dflt = *cfg;
}
if (cfg->index == 0)
goto next_entry;
link->conf.ConfigIndex = cfg->index;
/* 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 (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
!= conf.Vcc)
goto next_entry;
} else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
!= conf.Vcc)
goto next_entry;
}
if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vpp =
cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
link->conf.Vpp =
dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
/* we need an interrupt */
if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
link->conf.Attributes |= CONF_ENABLE_IRQ;
/* IO window settings */
link->io.NumPorts1 = link->io.NumPorts2 = 0;
if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
link->io.BasePort1 = io->win[0].base;
link->io.NumPorts1 = io->win[0].len;
if (pcmcia_request_io(link, &link->io) != 0)
goto next_entry;
}
break;
next_entry:
pcmcia_disable_device(link);
last_ret = pcmcia_get_next_tuple(link, &tuple);
}
/* require an IRQ and two registers */
if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
goto cs_failed;
if (link->conf.Attributes & CONF_ENABLE_IRQ)
CS_CHECK(RequestIRQ,
pcmcia_request_irq(link, &link->irq));
else
goto cs_failed;
CS_CHECK(RequestConfiguration,
pcmcia_request_configuration(link, &link->conf));
sprintf(dev->node.dev_name, driver_name);
dev->node.major = dev->node.minor = 0;
link->dev_node = &dev->node;
printk(KERN_INFO "%s: index 0x%02x: ",
dev->node.dev_name, link->conf.ConfigIndex);
if (link->conf.Vpp)
printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
printk(", irq %d", link->irq.AssignedIRQ);
printk(", io 0x%04x-0x%04x", link->io.BasePort1,
link->io.BasePort1+link->io.NumPorts1-1);
printk("\n");
if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
< 0) {
cs_failed:
printk("sl811_cs_config failed\n");
cs_error(link, last_fn, last_ret);
sl811_cs_release(link);
return -ENODEV;
}
return 0;
}
static int sl811_cs_probe(struct pcmcia_device *link)
{
local_info_t *local;
local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
if (!local)
return -ENOMEM;
memset(local, 0, sizeof(local_info_t));
local->p_dev = link;
link->priv = local;
/* Initialize */
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
link->irq.Handler = NULL;
link->conf.Attributes = 0;
link->conf.IntType = INT_MEMORY_AND_IO;
return sl811_cs_config(link);
}
static struct pcmcia_device_id sl811_ids[] = {
PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
static struct pcmcia_driver sl811_cs_driver = {
.owner = THIS_MODULE,
.drv = {
.name = (char *)driver_name,
},
.probe = sl811_cs_probe,
.remove = sl811_cs_detach,
.id_table = sl811_ids,
};
/*====================================================================*/
static int __init init_sl811_cs(void)
{
return pcmcia_register_driver(&sl811_cs_driver);
}
module_init(init_sl811_cs);
static void __exit exit_sl811_cs(void)
{
pcmcia_unregister_driver(&sl811_cs_driver);
}
module_exit(exit_sl811_cs);
