From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
<talho@nvidia.com>, <skomatineni@nvidia.com>,
<broonie@kernel.org>, <robh+dt@kernel.org>,
<mark.rutland@arm.com>, <kyarlagadda@nvidia.com>
Cc: <ldewangan@nvidia.com>, <linux-tegra@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org>,
<devicetree@vger.kernel.org>
Subject: [PATCH V3 5/9] spi: export spi core function spi_set_cs
Date: Mon, 15 Apr 2019 14:30:30 -0700 [thread overview]
Message-ID: <1555363834-32155-6-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1555363834-32155-1-git-send-email-skomatineni@nvidia.com>
This patch exports spi_set_cs of the spi core to allow SPI masters
to use when gpio based chip select is needed.
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
drivers/spi/spi.c | 3 ++-
include/linux/spi/spi.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 59b1e57cae74..fa70e595f17a 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -773,7 +773,7 @@ int spi_register_board_info(struct spi_board_info const *info, unsigned n)
/*-------------------------------------------------------------------------*/
-static void spi_set_cs(struct spi_device *spi, bool enable)
+void spi_set_cs(struct spi_device *spi, bool enable)
{
if (spi->mode & SPI_CS_HIGH)
enable = !enable;
@@ -801,6 +801,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
spi->controller->set_cs(spi, !enable);
}
}
+EXPORT_SYMBOL_GPL(spi_set_cs);
#ifdef CONFIG_HAS_DMA
int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index fc4d21b4c2e4..c7ca95f26725 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -973,6 +973,7 @@ extern int spi_async(struct spi_device *spi, struct spi_message *message);
extern int spi_async_locked(struct spi_device *spi,
struct spi_message *message);
extern int spi_slave_abort(struct spi_device *spi);
+extern void spi_set_cs(struct spi_device *spi, bool enable);
static inline size_t
spi_max_message_size(struct spi_device *spi)
--
2.7.4
next prev parent reply other threads:[~2019-04-15 21:30 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 21:30 [PATCH V3 0/9] bug fixes and more features to Tegra SPI Sowjanya Komatineni
2019-04-15 21:30 ` [PATCH V3 1/9] spi: tegra114: fix PIO transfer Sowjanya Komatineni
2019-04-16 16:32 ` Applied "spi: tegra114: fix PIO transfer" to the spi tree Mark Brown
2019-04-29 21:42 ` Sowjanya Komatineni
2019-05-02 2:42 ` Mark Brown
2019-04-15 21:30 ` [PATCH V3 2/9] spi: expand mode support Sowjanya Komatineni
2019-04-18 10:26 ` Applied "spi: expand mode support" to the spi tree Mark Brown
2019-05-02 2:19 ` Mark Brown
2019-04-15 21:30 ` [PATCH V3 3/9] spi: add SPI_LSBYTE_FIRST mode Sowjanya Komatineni
2019-04-19 15:22 ` Mark Brown
2019-04-27 0:32 ` Sowjanya Komatineni
2019-05-06 4:49 ` Mark Brown
2019-04-15 21:30 ` [PATCH V3 4/9] spi: tegra114: add support for Tegra SPI LSBYTE_FIRST Sowjanya Komatineni
2019-04-15 21:30 ` Sowjanya Komatineni [this message]
2019-04-19 15:18 ` [PATCH V3 5/9] spi: export spi core function spi_set_cs Mark Brown
2019-04-29 22:02 ` Sowjanya Komatineni
2019-05-06 4:44 ` Mark Brown
2019-05-10 18:53 ` Sowjanya Komatineni
2019-05-12 3:12 ` Mark Brown
2019-04-15 21:30 ` [PATCH V3 6/9] spi: tegra114: add support for gpio based CS Sowjanya Komatineni
2019-04-15 21:30 ` [PATCH V3 7/9] spi: tegra114: add support for hw based cs Sowjanya Komatineni
2019-04-15 21:30 ` [PATCH V3 8/9] spi: tegra114: add support for HW CS timing Sowjanya Komatineni
2019-04-15 21:30 ` [PATCH V3 9/9] spi: tegra114: add support for TX and RX trimmers Sowjanya Komatineni
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