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authorDaniel Drake <dsd@laptop.org>2011-06-25 17:34:14 +0100
committerH. Peter Anvin <hpa@linux.intel.com>2011-07-06 14:44:38 -0700
commit7bc74b3df73776fe06f3df9fafd2d2698e6ca28a (patch)
tree166bd6e0b0de947dd278acac03480eb359bff93e /include/linux/cs5535.h
parentbc4ecd5a5efc2435e6debfb7b279a15ae96697fd (diff)
x86, olpc-xo1-sci: Add GPE handler and ebook switch functionality
The EC in the OLPC XO-1 delivers GPE events to provide various notifications. Add the basic code for GPE/EC event processing and enable the ebook switch, which can be used as a wakeup source. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-8-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'include/linux/cs5535.h')
-rw-r--r--include/linux/cs5535.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/cs5535.h b/include/linux/cs5535.h
index 6f78235cb90..d7e9a7f6ddb 100644
--- a/include/linux/cs5535.h
+++ b/include/linux/cs5535.h
@@ -11,6 +11,8 @@
#ifndef _CS5535_H
#define _CS5535_H
+#include <asm/msr.h>
+
/* MSRs */
#define MSR_GLIU_P2D_RO0 0x10000029
@@ -43,6 +45,18 @@
#define MSR_GX_GLD_MSR_CONFIG 0xC0002001
#define MSR_GX_MSR_PADSEL 0xC0002011
+static inline int cs5535_pic_unreqz_select_high(unsigned int group,
+ unsigned int irq)
+{
+ uint32_t lo, hi;
+
+ rdmsr(MSR_PIC_ZSEL_HIGH, lo, hi);
+ lo &= ~(0xF << (group * 4));
+ lo |= (irq & 0xF) << (group * 4);
+ wrmsr(MSR_PIC_ZSEL_HIGH, lo, hi);
+ return 0;
+}
+
/* PIC registers */
#define CS5536_PIC_INT_SEL1 0x4d0
#define CS5536_PIC_INT_SEL2 0x4d1
@@ -73,6 +87,7 @@
#define CS5536_PM1_EN 0x02
#define CS5536_PM1_CNT 0x08
#define CS5536_PM_GPE0_STS 0x18
+#define CS5536_PM_GPE0_EN 0x1c
/* CS5536_PM1_STS bits */
#define CS5536_WAK_FLAG (1 << 15)
@@ -81,6 +96,13 @@
/* CS5536_PM1_EN bits */
#define CS5536_PM_PWRBTN (1 << 8)
+/* CS5536_PM_GPE0_STS bits */
+#define CS5536_GPIOM7_PME_FLAG (1 << 31)
+#define CS5536_GPIOM6_PME_FLAG (1 << 30)
+
+/* CS5536_PM_GPE0_EN bits */
+#define CS5536_GPIOM7_PME_EN (1 << 31)
+
/* VSA2 magic values */
#define VSA_VRC_INDEX 0xAC1C
#define VSA_VRC_DATA 0xAC1E