* [PATCH] pc8736x_gpio: add support for PC87365 chips.
@ 2008-10-06 15:10 Andre Haupt
0 siblings, 0 replies; only message in thread
From: Andre Haupt @ 2008-10-06 15:10 UTC (permalink / raw)
To: jim.cromie; +Cc: linux-kernel, Andre Haupt
This is only compile tested, because i do not own appropriate hardware.
Signed-off-by: Andre Haupt <andre@bitwigglers.org>
---
drivers/char/pc8736x_gpio.c | 11 ++++++++---
1 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c
index b930de5..3f7da8c 100644
--- a/drivers/char/pc8736x_gpio.c
+++ b/drivers/char/pc8736x_gpio.c
@@ -41,7 +41,8 @@ static u8 pc8736x_gpio_shadow[4];
#define SIO_BASE2 0x4E /* alt command-reg to check */
#define SIO_SID 0x20 /* SuperI/O ID Register */
-#define SIO_SID_VALUE 0xe9 /* Expected value in SuperI/O ID Register */
+#define SIO_SID_PC87365 0xe5 /* Expected value in ID Register for PC87365 */
+#define SIO_SID_PC87366 0xe9 /* Expected value in ID Register for PC87366 */
#define SIO_CF1 0x21 /* chip config, bit0 is chip enable */
@@ -91,13 +92,17 @@ static inline int superio_inb(int addr)
static int pc8736x_superio_present(void)
{
+ int id;
+
/* try the 2 possible values, read a hardware reg to verify */
superio_cmd = SIO_BASE1;
- if (superio_inb(SIO_SID) == SIO_SID_VALUE)
+ id = superio_inb(SIO_SID);
+ if (id == SIO_SID_PC87365 || id == SIO_SID_PC87366)
return superio_cmd;
superio_cmd = SIO_BASE2;
- if (superio_inb(SIO_SID) == SIO_SID_VALUE)
+ id = superio_inb(SIO_SID);
+ if (id == SIO_SID_PC87365 || id == SIO_SID_PC87366)
return superio_cmd;
return 0;
--
1.5.5.GIT
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