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[PATCH] pcmcia: Add support for Possio GCC AKA PCMCIA Siemens MC45 

This ugly hack add support for Siemens MC45 PCMCIA GPRS card (which is
identical to Possio GCC, and which is offered by one of our local GPRS
providers).  Card has unfortunate feature that after poweron oxcf950 chip
is fully powered and works, but attached MC45 modem is powered down :-(
There is a special sequence (which takes 1 sec :-( ) to poweron MC45 (and
after MC45 powers on, it takes more than 2 secs until firmware fully
boots...) which needs to be executed after all powerons.

I'm really not familiar with PCMCIA subsystem, so I have no idea whether I
should issue request_region() on rest of oxcf950 address range (0-7 is
UART, 8-F are special configuration registers), or how this should be
better integrated with PM system and so on - I just put it in same place
where another hack already lived...

Card uses 18.432MHz XTAL, so to get it to work you must add lines below to
the /etc/pcmcia/serial.opts.

case "$MANFID-$FUNCID-$PRODID_1-$PRODID_2-$PRODID_3-$PRODID_4" in
'030c,0003-2-GPRS-CARD--')
    SERIAL_OPTS="baud_base 1152000"
    ;;
esac

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Petr Vandrovec 2006-02-10 02:04:00 -08:00 committed by Dominik Brodowski
parent d6ff5a8532
commit 30bac7aa0e
2 changed files with 49 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
drivers/serial/serial_cs.c
View File

@ -41,6 +41,7 @@
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/serial_core.h>
#include <linux/delay.h>
#include <linux/major.h>
#include <asm/io.h>
#include <asm/system.h>
@ -102,6 +103,8 @@ struct serial_info {
int multi;
int slave;
int manfid;
int prodid;
int c950ctrl;
dev_node_t node[4];
int line[4];
};
@ -116,6 +119,33 @@ struct serial_cfg_mem {
static int serial_config(struct pcmcia_device * link);
static void wakeup_card(struct serial_info *info)
{
int ctrl = info->c950ctrl;
if (info->manfid == MANFID_OXSEMI) {
outb(12, ctrl + 1);
} else if (info->manfid == MANFID_POSSIO && info->prodid == PRODID_POSSIO_GCC) {
/* request_region? oxsemi branch does no request_region too... */
/* This sequence is needed to properly initialize MC45 attached to OXCF950.
* I tried decreasing these msleep()s, but it worked properly (survived
* 1000 stop/start operations) with these timeouts (or bigger). */
outb(0xA, ctrl + 1);
msleep(100);
outb(0xE, ctrl + 1);
msleep(300);
outb(0xC, ctrl + 1);
msleep(100);
outb(0xE, ctrl + 1);
msleep(200);
outb(0xF, ctrl + 1);
msleep(100);
outb(0xE, ctrl + 1);
msleep(100);
outb(0xC, ctrl + 1);
}
}
/*======================================================================
After a card is removed, serial_remove() will unregister
@ -161,6 +191,7 @@ static int serial_resume(struct pcmcia_device *link)
for (i = 0; i < info->ndev; i++)
serial8250_resume_port(info->line[i]);
wakeup_card(info);
}
return 0;
@ -503,15 +534,23 @@ static int multi_config(struct pcmcia_device * link)
}
/* The Oxford Semiconductor OXCF950 cards are in fact single-port:
8 registers are for the UART, the others are extra registers */
if (info->manfid == MANFID_OXSEMI) {
* 8 registers are for the UART, the others are extra registers.
* Siemen's MC45 PCMCIA (Possio's GCC) is OXCF950 based too.
*/
if (info->manfid == MANFID_OXSEMI || (info->manfid == MANFID_POSSIO &&
info->prodid == PRODID_POSSIO_GCC)) {
int err;
if (cf->index == 1 || cf->index == 3) {
setup_serial(link, info, base2, link->irq.AssignedIRQ);
outb(12, link->io.BasePort1 + 1);
err = setup_serial(link, info, base2,
link->irq.AssignedIRQ);
base2 = link->io.BasePort1;
} else {
setup_serial(link, info, link->io.BasePort1, link->irq.AssignedIRQ);
outb(12, base2 + 1);
err = setup_serial(link, info, link->io.BasePort1,
link->irq.AssignedIRQ);
}
info->c950ctrl = base2;
wakeup_card(info);
rc = 0;
goto free_cfg_mem;
}
@ -583,6 +622,7 @@ static int serial_config(struct pcmcia_device * link)
tuple->DesiredTuple = CISTPL_MANFID;
if (first_tuple(link, tuple, parse) == CS_SUCCESS) {
info->manfid = parse->manfid.manf;
info->prodid = le16_to_cpu(buf[1]);
for (i = 0; i < MULTI_COUNT; i++)
if ((info->manfid == multi_id[i].manfid) &&
(parse->manfid.card == multi_id[i].prodid))

3
include/pcmcia/ciscode.h
View File

@ -122,4 +122,7 @@
#define MANFID_XIRCOM 0x0105
#define MANFID_POSSIO 0x030c
#define PRODID_POSSIO_GCC 0x0003
#endif /* _LINUX_CISCODE_H */