From 865e9f13c94891daed4f6a5f69c5d6ec04d4932f Mon Sep 17 00:00:00 2001
From: Pierre Ossman <drzeus@drzeus.cx>
Date: Sat, 3 Sep 2005 16:45:02 +0100
Subject: [MMC] ios for mmc chip select
Adds a new ios for setting the chip select pin on MMC cards. Needed on
SD controllers which use this pin for other things and therefore cannot
have it pulled high at all times.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
include/linux/mmc/host.h | 6 ++++++
1 file changed, 6 insertions(+)
(limited to 'include')
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 9a0893f324..30f68c0c8c 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -46,6 +46,12 @@ struct mmc_ios {
#define MMC_BUSMODE_OPENDRAIN 1
#define MMC_BUSMODE_PUSHPULL 2
+ unsigned char chip_select; /* SPI chip select */
+
+#define MMC_CS_DONTCARE 0
+#define MMC_CS_HIGH 1
+#define MMC_CS_LOW 2
+
unsigned char power_mode; /* power supply mode */
#define MMC_POWER_OFF 0
--
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