[PATCH 2/5] spi: dw: allow providing own set_cs callback
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: 2018-07-17 14:23:57
Also in:
linux-mips, linux-spi, lkml
Subsystem:
spi subsystem, the rest · Maintainers:
Mark Brown, Linus Torvalds
Allow platform specific drivers to provide their own set_cs callback when the IP integration requires it. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> --- drivers/spi/spi-dw.c | 3 +++ drivers/spi/spi-dw.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index a087464efdd7..f76e31faf694 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c@@ -507,6 +507,9 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) master->dev.of_node = dev->of_node; master->flags = SPI_MASTER_GPIO_SS; + if (dws->set_cs) + master->set_cs = dws->set_cs; + /* Basic HW init */ spi_hw_init(dev, dws);
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
index 2cde2473b3e9..446013022849 100644
--- a/drivers/spi/spi-dw.h
+++ b/drivers/spi/spi-dw.h@@ -112,6 +112,7 @@ struct dw_spi { u32 reg_io_width; /* DR I/O width in bytes */ u16 bus_num; u16 num_cs; /* supported slave numbers */ + void (*set_cs)(struct spi_device *spi, bool enable); /* Current message transfer state info */ size_t len;
--
2.18.0