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fc54b9bf15
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
33 lines
1.3 KiB
Diff
33 lines
1.3 KiB
Diff
From 88d3c5010a207c651d1940856d0d26935434e3c2 Mon Sep 17 00:00:00 2001
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From: Holger Freyther <ich@tamarin.(none)>
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Date: Tue, 13 May 2008 18:53:40 +0100
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Subject: [PATCH] Explain why we want SECOND to kick.
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We do not mask the SECOND interrupt to make sure that we get
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a interrupt at the beginning. We use this for the coldplug_done
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initisalisation.
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So pcf->flags and INT1M is out of sync at the beginning but after the
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first SECOND interrupt it will be put into sync.
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Signed-Off-By: Holger Freyther <zecke@openmoko.org>
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---
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drivers/i2c/chips/pcf50633.c | 3 ++-
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1 files changed, 2 insertions(+), 1 deletions(-)
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diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
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index 205f4e3..1c10c42 100644
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--- a/drivers/i2c/chips/pcf50633.c
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+++ b/drivers/i2c/chips/pcf50633.c
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@@ -1755,7 +1755,8 @@ static int pcf50633_detect(struct i2c_adapter *adapter, int address, int kind)
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goto exit_sysfs;
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/* configure interrupt mask */
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- reg_write(data, PCF50633_REG_INT1M, 0x00); /* we want SECOND to kick */
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+ /* we want SECOND to kick for the coldplug initialisation */
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+ reg_write(data, PCF50633_REG_INT1M, 0x00);
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reg_write(data, PCF50633_REG_INT2M, 0x00);
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reg_write(data, PCF50633_REG_INT3M, 0x00);
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reg_write(data, PCF50633_REG_INT4M, 0x00);
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--
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1.5.6.5
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