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spi: dw: allow providing own set_cs callback 

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>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Alexandre Belloni 2018-07-17 16:23:11 +02:00 committed by Mark Brown
parent ce397d215c
commit 62dbbae483
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GPG Key ID: 24D68B725D5487D0
2 changed files with 4 additions and 0 deletions
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3
drivers/spi/spi-dw.c
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@ -505,6 +505,9 @@ 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);

1
drivers/spi/spi-dw.h
View File

@ -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;