From: Mike Rapoport <mike@compulab.co.il>
Date: Tue, 24 Nov 2009 08:25:33 +0000 (+0200)
Subject: backlight: tdo24m: ensure chip select changes between transfers
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f64dcac0b1247842db2530959cbe3df1cb1947c4;p=openwrt%2Fstaging%2Fblogic.git

backlight: tdo24m: ensure chip select changes between transfers

Some SPI host drivers do not change chip select betwen transfers unless
.cs_chnage field is explicitly set. The LCD spec requires chip select
change between consecuitive transfers, so ensure it at the SPI driver
level.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
---

diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
index bbfb502add67..4a3d46e08016 100644
--- a/drivers/video/backlight/tdo24m.c
+++ b/drivers/video/backlight/tdo24m.c
@@ -367,6 +367,7 @@ static int __devinit tdo24m_probe(struct spi_device *spi)
 
 	spi_message_init(m);
 
+	x->cs_change = 1;
 	x->tx_buf = &lcd->buf[0];
 	spi_message_add_tail(x, m);