From f3d106881b06a423455f95916e666acebe6503f2 Mon Sep 17 00:00:00 2001
From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Sat, 16 Sep 2006 23:07:46 +0100
Subject: [PATCH] [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>
---
drivers/serial/serial_cs.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index 704922073bbf..1267cbed52f5 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -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 "
--
GitLab