pc8736x_gpio: add support for PC87365 chips

This is only compile tested, because I do not own appropriate hardware.

Signed-off-by: Andre Haupt <andre@bitwigglers.org>
Cc: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c
index b930de50407a..3f7da8cf3a80 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;