linux-kernel - [PATCH] backlight: lp855x: add FAST bit description for LP8556

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Message-ID: <A874F61F95741C4A9BA573A70FE3998F41EEBC13@DBDE02.ent.ti.com>
Date:	Thu, 9 Aug 2012 06:49:22 +0000
From:	"Kim, Milo" <Milo.Kim@...com>
To:	"'Andrew Morton'" <akpm@...ux-foundation.org>
CC:	"'Richard Purdie'" <rpurdie@...ys.net>,
	Bryan Wu <bryan.wu@...onical.com>,
	"'LKML'" <linux-kernel@...r.kernel.org>
Subject: [PATCH] backlight: lp855x: add FAST bit description for LP8556

LP8556 backlight driver supports fast refresh mode when exiting
the low power mode.
This bit can be configurable in the platform side.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@...com>
---
 include/linux/platform_data/lp855x.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/platform_data/lp855x.h b/include/linux/platform_data/lp855x.h
index cc76f1f..761f317 100644
--- a/include/linux/platform_data/lp855x.h
+++ b/include/linux/platform_data/lp855x.h
@@ -46,6 +46,8 @@
 #define LP8556_I2C_CONFIG	((ENABLE_BL << BL_CTL_SHFT) | \
 				(LP8556_I2C_ONLY << BRT_MODE_SHFT))
 #define LP8556_COMB2_CONFIG	(LP8556_COMBINED2 << BRT_MODE_SHFT)
+#define LP8556_FAST_CONFIG	BIT(7) /* use it if EPROMs should be maintained
+					  when exiting the low power mode */
 
 enum lp855x_chip_id {
 	LP8550,
-- 
1.7.2.5


Best Regards,
Milo


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