[PATCH 1/5] include/linux/spi/dw_spi.h: enable platform specific chipselect.

From: George Shore <george-ofzTHo7+kyPpQY4QmZNtDQ@public.gmane.org>
To: spi-devel-list
	<spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
	Grant Likely
	<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>,
	David Brownell
	<dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Cc: George Shore <george-ofzTHo7+kyPpQY4QmZNtDQ@public.gmane.org>
Subject: [PATCH 1/5] include/linux/spi/dw_spi.h: enable platform specific chipselect.
Date: Thu, 21 Jan 2010 11:40:48 +0000	[thread overview]
Message-ID: <1264074052-2214-1-git-send-email-george@georgeshore.com> (raw)

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-ofzTHo7+kyPpQY4QmZNtDQ@public.gmane.org>
---
 include/linux/spi/dw_spi.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h
index 1a127a3..cc813f9 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);
 }
 
-- 
1.6.6.264.gd0743


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