The patch titled
gpio_cs5535: disable AUX on output
has been added to the -mm tree. Its filename is
gpio_cs5535-disable-aux-on-output.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: gpio_cs5535: disable AUX on output
From: "Ben Gardner" <gardner.ben@xxxxxxxxx>
The AMD CS5535/CS5536 GPIO has two alternate output modes: AUX-1 and AUX-2.
When either AUX is enabled, the cs5535_gpio driver cannot control the
output.
Some BIOS code for the Geode processor enables AUX-1 for GPIO-1, which
configures it as the PC BEEP output.
This patch will disable AUX-1 and AUX-2 when the user enables output.
Signed-of-by: Ben Gardner <gardner.ben@xxxxxxxxx>
Cc: Richard Knutsson <ricknu-0@xxxxxxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/cs5535_gpio.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN drivers/char/cs5535_gpio.c~gpio_cs5535-disable-aux-on-output drivers/char/cs5535_gpio.c
--- a/drivers/char/cs5535_gpio.c~gpio_cs5535-disable-aux-on-output
+++ a/drivers/char/cs5535_gpio.c
@@ -104,6 +104,11 @@ static ssize_t cs5535_gpio_write(struct
for (j = 0; j < ARRAY_SIZE(rm); j++) {
if (c == rm[j].on) {
outl(m1, base + rm[j].wr_offset);
+ /* If enabling output, turn off AUX 1 and AUX 2 */
+ if (c == 'O') {
+ outl(m0, base + 0x10);
+ outl(m0, base + 0x14);
+ }
break;
} else if (c == rm[j].off) {
outl(m0, base + rm[j].wr_offset);
_
Patches currently in -mm which might be from gardner.ben@xxxxxxxxx are
gpio_cs5535-disable-aux-on-output.patch
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