Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4670df831cb479ba57dd0fa0b8a9eb88cc7129be
Commit: 4670df831cb479ba57dd0fa0b8a9eb88cc7129be
Parent: f1dad166e88a5ddca0acf8f11dea0e2bd92d8bf3
Author: Ben Gardner <[EMAIL PROTECTED]>
AuthorDate: Tue Dec 4 23:45:24 2007 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed Dec 5 09:21:20 2007 -0800
gpio_cs5535: disable AUX on output
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 <[EMAIL PROTECTED]>
Cc: Richard Knutsson <[EMAIL PROTECTED]>
Cc: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/char/cs5535_gpio.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/char/cs5535_gpio.c b/drivers/char/cs5535_gpio.c
index fe6d240..c2d23ca 100644
--- a/drivers/char/cs5535_gpio.c
+++ b/drivers/char/cs5535_gpio.c
@@ -104,6 +104,11 @@ static ssize_t cs5535_gpio_write(struct file *file, const
char __user *data,
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);
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
