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authorPaul Parsons <lost.distance@yahoo.com>2012-03-11 13:23:42 +0000
committerHaojian Zhuang <haojian.zhuang@gmail.com>2012-03-14 16:46:13 +0800
commitcd419cf922bdb50d33c98c9a0c81f51a40609f66 (patch)
treefd5234db6b8172371946a4ec7e1b41e40fcf7f1f /arch/arm/mach-pxa/include
parent95a50cab1dc6446fb1a91d20e14b649dd9f41f1c (diff)
ARM: pxa/hx4700: Reduce sleep mode battery discharge by 35%
Drive the two Bluetooth UART output GPIOs (GPIO43_BTUART_TXD, GPIO45_BTUART_RTS) LOW during sleep mode instead of HIGH. This reduces sleep mode battery discharge from approximately 46 mA to approximately 30 mA. Signed-off-by: Oliver Winker <oliver@oli1170.net> Signed-off-by: Paul Parsons <lost.distance@yahoo.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/include')
-rw-r--r--arch/arm/mach-pxa/include/mach/mfp-pxa27x.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
index ec0f0b0b674..a65867209aa 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
@@ -158,7 +158,9 @@
#define GPIO44_BTUART_CTS MFP_CFG_IN(GPIO44, AF1)
#define GPIO42_BTUART_RXD MFP_CFG_IN(GPIO42, AF1)
#define GPIO45_BTUART_RTS MFP_CFG_OUT(GPIO45, AF2, DRIVE_HIGH)
+#define GPIO45_BTUART_RTS_LPM_LOW MFP_CFG_OUT(GPIO45, AF2, DRIVE_LOW)
#define GPIO43_BTUART_TXD MFP_CFG_OUT(GPIO43, AF2, DRIVE_HIGH)
+#define GPIO43_BTUART_TXD_LPM_LOW MFP_CFG_OUT(GPIO43, AF2, DRIVE_LOW)
/* STUART */
#define GPIO46_STUART_RXD MFP_CFG_IN(GPIO46, AF2)