linux-kernel - [PATCH] pc8736x_gpio: add support for PC87365 chips.

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Date:	Mon,  6 Oct 2008 17:10:00 +0200
From:	Andre Haupt <andre@...wigglers.org>
To:	jim.cromie@...il.com
Cc:	linux-kernel@...r.kernel.org, Andre Haupt <andre@...wigglers.org>
Subject: [PATCH] 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@...wigglers.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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