From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Patrice Chotard <patrice.chotard@foss.st.com>,
Mark Brown <broonie@kernel.org>, Sasha Levin <sashal@kernel.org>,
linux-spi@vger.kernel.org
Subject: [PATCH AUTOSEL 6.6 07/12] spi: Fix OCTAL mode support
Date: Sun, 30 Jun 2024 20:13:26 -0400 [thread overview]
Message-ID: <20240701001342.2920907-7-sashal@kernel.org> (raw)
In-Reply-To: <20240701001342.2920907-1-sashal@kernel.org>
From: Patrice Chotard <patrice.chotard@foss.st.com>
[ Upstream commit d6a711a898672dd873aab3844f754a3ca40723a5 ]
Add OCTAL mode support.
Issue detected using "--octal" spidev_test's option.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://msgid.link/r/20240618132951.2743935-4-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi.c | 6 ++++--
include/linux/spi/spi.h | 5 +++--
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index da15c3f388d1f..5c57c7378ee70 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -4000,7 +4000,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
return -EINVAL;
if (xfer->tx_nbits != SPI_NBITS_SINGLE &&
xfer->tx_nbits != SPI_NBITS_DUAL &&
- xfer->tx_nbits != SPI_NBITS_QUAD)
+ xfer->tx_nbits != SPI_NBITS_QUAD &&
+ xfer->tx_nbits != SPI_NBITS_OCTAL)
return -EINVAL;
if ((xfer->tx_nbits == SPI_NBITS_DUAL) &&
!(spi->mode & (SPI_TX_DUAL | SPI_TX_QUAD)))
@@ -4015,7 +4016,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
return -EINVAL;
if (xfer->rx_nbits != SPI_NBITS_SINGLE &&
xfer->rx_nbits != SPI_NBITS_DUAL &&
- xfer->rx_nbits != SPI_NBITS_QUAD)
+ xfer->rx_nbits != SPI_NBITS_QUAD &&
+ xfer->rx_nbits != SPI_NBITS_OCTAL)
return -EINVAL;
if ((xfer->rx_nbits == SPI_NBITS_DUAL) &&
!(spi->mode & (SPI_RX_DUAL | SPI_RX_QUAD)))
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 8cc7a99927f95..e5baf43bcfbb6 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -1049,12 +1049,13 @@ struct spi_transfer {
unsigned dummy_data:1;
unsigned cs_off:1;
unsigned cs_change:1;
- unsigned tx_nbits:3;
- unsigned rx_nbits:3;
+ unsigned tx_nbits:4;
+ unsigned rx_nbits:4;
unsigned timestamped:1;
#define SPI_NBITS_SINGLE 0x01 /* 1-bit transfer */
#define SPI_NBITS_DUAL 0x02 /* 2-bit transfer */
#define SPI_NBITS_QUAD 0x04 /* 4-bit transfer */
+#define SPI_NBITS_OCTAL 0x08 /* 8-bit transfer */
u8 bits_per_word;
struct spi_delay delay;
struct spi_delay cs_change_delay;
--
2.43.0
parent reply other threads:[~2024-07-01 0:14 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20240701001342.2920907-1-sashal@kernel.org>]
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