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

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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>
This commit is contained in:
Daniel Drake
2011-06-25 17:34:12 +01:00
committed by H. Peter Anvin
parent 97c4cb71c1
commit 7feda8e9f3
4 changed files with 209 additions and 0 deletions
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8
include/linux/cs5535.h
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@@ -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)