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spi: dw: Allow custom set_cs_callback

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Allow platform specific drivers to provide their own set_cs callback when
 the IP integration requires it.
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Merge tag 'spi-dw-set-cs' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-4.19

spi: dw: Allow custom set_cs_callback

Allow platform specific drivers to provide their own set_cs callback when
the IP integration requires it.
This commit is contained in:
Mark Brown 2018-07-18 13:24:54 +01:00
commit b86d77123c
2 changed files with 4 additions and 0 deletions
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3
drivers/spi/spi-dw.c
View File

@ -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;