linux-kernel - [Patch] Add spi full duplex mode transfer support

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Message-ID: <489ecd0c0608292140m483bba2fqa300b55c5f4acf26@mail.gmail.com>
Date:	Wed, 30 Aug 2006 12:40:35 +0800
From:	"Luke Yang" <luke.adi@...il.com>
To:	linux-kernel@...r.kernel.org, dbrownell@...rs.sourceforge.net,
	spi-devel-general@...ts.sourceforge.net
Subject: [Patch] Add spi full duplex mode transfer support

Hi all,

   To enable full duplex mode spi transfer in Blackfin spi master
driver, I need an extra field in spi_transfer structure. Attached the
right format patch.

Signed-off-by: Luke Yang <luke.adi@...il.com>

 spi.h |    1 +
 1 files changed, 1 insertion(+)

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index c8bb680..99816eb 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -331,6 +331,7 @@ struct spi_transfer {
        dma_addr_t      rx_dma;

        unsigned        cs_change:1;
+       unsigned        is_duplex:1;
        u8              bits_per_word;
        u16             delay_usecs;
        u32             speed_hz;

-- 
Best regards,
Luke Yang
luke.adi@...il.com

View attachment "spi_full_duplex.patch" of type "text/x-patch" (331 bytes)