Commit f3d10688 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 20f13049

drivers/serial/serial_cs.c

+20 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ struct serial_quirk { 
	unsigned int prodid;

	int multi;		/* 1 = multifunction, > 1 = # ports */

	void (*config)(struct pcmcia_device *);

	void (*setup)(struct pcmcia_device *, struct uart_port *);

	void (*wakeup)(struct pcmcia_device *);

	int (*post)(struct pcmcia_device *);

};
@@ -108,6 +109,16 @@ struct serial_cfg_mem { 
	u_char buf[256];

};



/*

 * vers_1 5.0, "Brain Boxes", "2-Port RS232 card", "r6"

 * manfid 0x0160, 0x0104

 * This card appears to have a 14.7456MHz clock.

 */

static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_port *port)

{

	port->uartclk = 14745600;

}



static int quirk_post_ibm(struct pcmcia_device *link)

{

	conf_reg_t reg = { 0, CS_READ, 0x800, 0 };
@@ -192,6 +203,11 @@ static void quirk_config_socket(struct pcmcia_device *link) 


static const struct serial_quirk quirks[] = {

	{

		.manfid	= 0x0160,

		.prodid	= 0x0104,

		.multi	= -1,

		.setup	= quirk_setup_brainboxes_0104,

	}, {

		.manfid	= MANFID_IBM,

		.prodid	= ~0,

		.multi	= -1,
@@ -386,6 +402,10 @@ static int setup_serial(struct pcmcia_device *handle, struct serial_info * info, 
	port.dev = &handle_to_dev(handle);

	if (buggy_uart)

		port.flags |= UPF_BUGGY_UART;



	if (info->quirk && info->quirk->setup)

		info->quirk->setup(handle, &port);



	line = serial8250_register_port(&port);

	if (line < 0) {

		printk(KERN_NOTICE "serial_cs: serial8250_register_port() at "