Unverified Commit 0baf9eb2 authored by David Lechner's avatar David Lechner Committed by Mark Brown
Browse files

spi: add new SPI_CS_WORD flag 



This adds a new SPI mode flag, SPI_CS_WORD, that is used to indicate
that a SPI device requires the chip select to be toggled after each
word that is transferred.

Signed-off-by: default avatarDavid Lechner <david@lechnology.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 5b394b2d

include/linux/spi/spi.h

+1 −1
Original line number Diff line number Diff line
@@ -163,6 +163,7 @@ struct spi_device { 
#define	SPI_TX_QUAD	0x200			/* transmit with 4 wires */

#define	SPI_RX_DUAL	0x400			/* receive with 2 wires */

#define	SPI_RX_QUAD	0x800			/* receive with 4 wires */

#define SPI_CS_WORD	0x1000			/* toggle cs after each word */

	int			irq;

	void			*controller_state;

	void			*controller_data;
@@ -177,7 +178,6 @@ struct spi_device { 
	 * the controller talks to each chip, like:

	 *  - memory packing (12 bit samples into low bits, others zeroed)

	 *  - priority

	 *  - drop chipselect after each word

	 *  - chipselect delays

	 *  - ...

	 */

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