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[SERIAL] serial_cs: Add quirk for brainboxes 2-port RS232 card
Mauro Ziliani reports that this card has a higher clock rate. Rather than tweak the 8250 driver to handle this, add a quirk to pass the correct clock rate to the driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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1 changed files with 20 additions and 0 deletions
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@ -85,6 +85,7 @@ struct serial_quirk {
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unsigned int prodid;
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int multi; /* 1 = multifunction, > 1 = # ports */
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void (*config)(struct pcmcia_device *);
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void (*setup)(struct pcmcia_device *, struct uart_port *);
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void (*wakeup)(struct pcmcia_device *);
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int (*post)(struct pcmcia_device *);
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};
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@ -108,6 +109,16 @@ struct serial_cfg_mem {
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u_char buf[256];
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};
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/*
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* vers_1 5.0, "Brain Boxes", "2-Port RS232 card", "r6"
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* manfid 0x0160, 0x0104
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* This card appears to have a 14.7456MHz clock.
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*/
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static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_port *port)
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{
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port->uartclk = 14745600;
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}
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static int quirk_post_ibm(struct pcmcia_device *link)
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{
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conf_reg_t reg = { 0, CS_READ, 0x800, 0 };
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@ -192,6 +203,11 @@ static void quirk_config_socket(struct pcmcia_device *link)
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static const struct serial_quirk quirks[] = {
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{
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.manfid = 0x0160,
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.prodid = 0x0104,
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.multi = -1,
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.setup = quirk_setup_brainboxes_0104,
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}, {
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.manfid = MANFID_IBM,
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.prodid = ~0,
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.multi = -1,
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@ -386,6 +402,10 @@ static int setup_serial(struct pcmcia_device *handle, struct serial_info * info,
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port.dev = &handle_to_dev(handle);
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if (buggy_uart)
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port.flags |= UPF_BUGGY_UART;
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if (info->quirk && info->quirk->setup)
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info->quirk->setup(handle, &port);
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line = serial8250_register_port(&port);
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if (line < 0) {
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printk(KERN_NOTICE "serial_cs: serial8250_register_port() at "
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