x86, olpc: Add XO-1 SCI driver and power button control

The System Control Interrupt is used in the OLPC XO-1 to control various
features of the laptop. Add the driver base and the power button
functionality.

This driver can't be built as a module, because functionality added in
future patches means that some drivers need to know at boot-time whether
SCI-based functionality is available.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Link: http://lkml.kernel.org/r/1309019658-1712-6-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/cs5535.h b/include/linux/cs5535.h
index 2facf16f017b..6f78235cb905 100644
--- a/include/linux/cs5535.h
+++ b/include/linux/cs5535.h
@@ -43,6 +43,10 @@
 #define MSR_GX_GLD_MSR_CONFIG   0xC0002001
 #define MSR_GX_MSR_PADSEL       0xC0002011
 
+/* PIC registers */
+#define CS5536_PIC_INT_SEL1     0x4d0
+#define CS5536_PIC_INT_SEL2     0x4d1
+
 /* resource sizes */
 #define LBAR_GPIO_SIZE          0xFF
 #define LBAR_MFGPT_SIZE         0x40
@@ -70,6 +74,10 @@
 #define CS5536_PM1_CNT          0x08
 #define CS5536_PM_GPE0_STS      0x18
 
+/* CS5536_PM1_STS bits */
+#define CS5536_WAK_FLAG         (1 << 15)
+#define CS5536_PWRBTN_FLAG      (1 << 8)
+
 /* CS5536_PM1_EN bits */
 #define CS5536_PM_PWRBTN        (1 << 8)