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authorRobert Reif <reif@earthlink.net>2008-04-24 03:37:51 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-05-15 07:50:00 -0700
commit970a75dcfa7fd55dd911830d8772dbbf471c154d (patch)
tree86fb674ab5191f6b15baa2cafac16c719205112f
parentb0af3e580c2d2213dad67075d55f980ebbad29dc (diff)
sparc: sunzilog uart order
[ Upstream commit: 227739bf4c110bbd02d0c0f13b272c32de406e4c ] I have a sparcstation 20 clone with a lot of on board serial ports. The serial core code assumes that uarts are assigned contiguously and that may not be the case when there are multiple zs devices present. This patch insures that uart chips are placed in front of keyboard/mouse chips in the port table. ffd37420: ttyS0 at MMIO 0xf1100000 (irq = 44) is a zs (ESCC) Console: ttyS0 (SunZilog zs0) console [ttyS0] enabled ffd37420: ttyS1 at MMIO 0xf1100004 (irq = 44) is a zs (ESCC) ffd37500: Keyboard at MMIO 0xf1000000 (irq = 44) is a zs ffd37500: Mouse at MMIO 0xf1000004 (irq = 44) is a zs ffd3c5c0: ttyS2 at MMIO 0xf1100008 (irq = 44) is a zs (ESCC) ffd3c5c0: ttyS3 at MMIO 0xf110000c (irq = 44) is a zs (ESCC) ffd3c6a0: ttyS4 at MMIO 0xf1100010 (irq = 44) is a zs (ESCC) ffd3c6a0: ttyS5 at MMIO 0xf1100014 (irq = 44) is a zs (ESCC) ffd3c780: ttyS6 at MMIO 0xf1100018 (irq = 44) is a zs (ESCC) ffd3c780: ttyS7 at MMIO 0xf110001c (irq = 44) is a zs (ESCC) Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/serial/sunzilog.c30
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c
index cb2e40506379..3271379a36db 100644
--- a/drivers/serial/sunzilog.c
+++ b/drivers/serial/sunzilog.c
@@ -1015,6 +1015,7 @@ static struct uart_ops sunzilog_pops = {
.verify_port = sunzilog_verify_port,
};
+static int uart_chip_count;
static struct uart_sunzilog_port *sunzilog_port_table;
static struct zilog_layout __iomem **sunzilog_chip_regs;
@@ -1350,16 +1351,22 @@ static int zilog_irq = -1;
static int __devinit zs_probe(struct of_device *op, const struct of_device_id *match)
{
- static int inst;
+ static int kbm_inst, uart_inst;
+ int inst;
struct uart_sunzilog_port *up;
struct zilog_layout __iomem *rp;
- int keyboard_mouse;
+ int keyboard_mouse = 0;
int err;
- keyboard_mouse = 0;
if (of_find_property(op->node, "keyboard", NULL))
keyboard_mouse = 1;
+ /* uarts must come before keyboards/mice */
+ if (keyboard_mouse)
+ inst = uart_chip_count + kbm_inst;
+ else
+ inst = uart_inst;
+
sunzilog_chip_regs[inst] = of_ioremap(&op->resource[0], 0,
sizeof(struct zilog_layout),
"zs");
@@ -1427,6 +1434,7 @@ static int __devinit zs_probe(struct of_device *op, const struct of_device_id *m
rp, sizeof(struct zilog_layout));
return err;
}
+ uart_inst++;
} else {
printk(KERN_INFO "%s: Keyboard at MMIO 0x%llx (irq = %d) "
"is a %s\n",
@@ -1438,12 +1446,11 @@ static int __devinit zs_probe(struct of_device *op, const struct of_device_id *m
op->dev.bus_id,
(unsigned long long) up[1].port.mapbase,
op->irqs[0], sunzilog_type(&up[1].port));
+ kbm_inst++;
}
dev_set_drvdata(&op->dev, &up[0]);
- inst++;
-
return 0;
}
@@ -1491,28 +1498,25 @@ static struct of_platform_driver zs_driver = {
static int __init sunzilog_init(void)
{
struct device_node *dp;
- int err, uart_count;
- int num_keybms;
+ int err;
+ int num_keybms = 0;
int num_sunzilog = 0;
- num_keybms = 0;
for_each_node_by_name(dp, "zs") {
num_sunzilog++;
if (of_find_property(dp, "keyboard", NULL))
num_keybms++;
}
- uart_count = 0;
if (num_sunzilog) {
- int uart_count;
-
err = sunzilog_alloc_tables(num_sunzilog);
if (err)
goto out;
- uart_count = (num_sunzilog * 2) - (2 * num_keybms);
+ uart_chip_count = num_sunzilog - num_keybms;
- err = sunserial_register_minors(&sunzilog_reg, uart_count);
+ err = sunserial_register_minors(&sunzilog_reg,
+ uart_chip_count * 2);
if (err)
goto out_free_tables;
}