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Diffstat (limited to 'include/linux/spi/spi.h')
-rw-r--r--include/linux/spi/spi.h28
1 files changed, 4 insertions, 24 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index a0faa18f7b1b..9c4cd27f4685 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -245,6 +245,9 @@ struct spi_master {
*/
u16 dma_alignment;
+ /* spi_device.mode flags understood by this controller driver */
+ u16 mode_bits;
+
/* Setup mode and clock, etc (spi driver may call many times).
*
* IMPORTANT: this may be called when transfers to another
@@ -523,30 +526,7 @@ static inline void spi_message_free(struct spi_message *m)
kfree(m);
}
-/**
- * spi_setup - setup SPI mode and clock rate
- * @spi: the device whose settings are being modified
- * Context: can sleep, and no requests are queued to the device
- *
- * SPI protocol drivers may need to update the transfer mode if the
- * device doesn't work with its default. They may likewise need
- * to update clock rates or word sizes from initial values. This function
- * changes those settings, and must be called from a context that can sleep.
- * Except for SPI_CS_HIGH, which takes effect immediately, the changes take
- * effect the next time the device is selected and data is transferred to
- * or from it. When this function returns, the spi device is deselected.
- *
- * Note that this call will fail if the protocol driver specifies an option
- * that the underlying controller or its driver does not support. For
- * example, not all hardware supports wire transfers using nine bit words,
- * LSB-first wire encoding, or active-high chipselects.
- */
-static inline int
-spi_setup(struct spi_device *spi)
-{
- return spi->master->setup(spi);
-}
-
+extern int spi_setup(struct spi_device *spi);
/**
* spi_async - asynchronous SPI transfer