From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: David Lechner To: linux-spi@vger.kernel.org, linux-iio@vger.kernel.org Cc: David Lechner , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Mark Brown , linux-kernel@vger.kernel.org Subject: [PATCH v2 1/4] spi: add new SPI_CS_WORD flag Date: Wed, 12 Sep 2018 19:39:17 -0500 Message-Id: <20180913003920.30600-2-david@lechnology.com> In-Reply-To: <20180913003920.30600-1-david@lechnology.com> References: <20180913003920.30600-1-david@lechnology.com> List-ID: 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: David Lechner --- include/linux/spi/spi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index d698f9db3484..7bb36145e2ba 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -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 * - ... */ -- 2.17.1