diff options
Diffstat (limited to 'drivers/serial/serial_cs.c')
| -rw-r--r-- | drivers/serial/serial_cs.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c index 389d847cd1b4a0..2c70773543e052 100644 --- a/drivers/serial/serial_cs.c +++ b/drivers/serial/serial_cs.c @@ -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)) |