From: George Shore <george@georgeshore.com>
Date: Thu, 21 Jan 2010 11:40:48 +0000 (+0000)
Subject: spi/dw_spi: enable platform specific chipselect.
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=83fe518a839e317480e50a138ef4acd73510d7ce;p=deliverable%2Flinux.git

spi/dw_spi: enable platform specific chipselect.

The driver core allows for a platform-specific chipselect assert/deassert
function, however the chipselect function in the core doesn't take advantage
of this fact.

This enables the use of a custom function, should it be defined.

Signed-off-by: George Shore <george@georgeshore.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---

diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h
index 1a127a31e017..cc813f95a2f2 100644
--- a/include/linux/spi/dw_spi.h
+++ b/include/linux/spi/dw_spi.h
@@ -172,6 +172,10 @@ static inline void spi_chip_sel(struct dw_spi *dws, u16 cs)
 {
 	if (cs > dws->num_cs)
 		return;
+
+	if (dws->cs_control)
+		dws->cs_control(1);
+
 	dw_writel(dws, ser, 1 << cs);
 }