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authorMark Brown <broonie@linaro.org>2013-09-01 16:48:48 +0400
committerMark Brown <broonie@linaro.org>2013-09-01 16:48:48 +0400
commitdb04e17055c2d912a847f02a10deee1d82f96300 (patch)
tree532d5ad54f9bef73689dd481445b377f6a7f6735 /include/linux
parent788a73967658ff9ccbca6fffd51c213702bfc01d (diff)
parent56ede94a000bb9635b326db38baf66da6dfc174e (diff)
downloadlinux-db04e17055c2d912a847f02a10deee1d82f96300.tar.xz
Merge remote-tracking branch 'spi/topic/checks' into spi-next
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/spi/spi.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index c920c2f4dad5..47854f3813d8 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -233,6 +233,8 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* suported. If set, the SPI core will reject any transfer with an
* unsupported bits_per_word. If not set, this value is simply ignored,
* and it's up to the individual driver to perform any validation.
+ * @min_speed_hz: Lowest supported transfer speed
+ * @max_speed_hz: Highest supported transfer speed
* @flags: other constraints relevant to this driver
* @bus_lock_spinlock: spinlock for SPI bus locking
* @bus_lock_mutex: mutex for SPI bus locking
@@ -312,6 +314,10 @@ struct spi_master {
#define SPI_BIT_MASK(bits) (((bits) == 32) ? ~0U : (BIT(bits) - 1))
#define SPI_BPW_RANGE_MASK(min, max) (SPI_BIT_MASK(max) - SPI_BIT_MASK(min - 1))
+ /* limits on transfer speed */
+ u32 min_speed_hz;
+ u32 max_speed_hz;
+
/* other constraints relevant to this driver */
u16 flags;
#define SPI_MASTER_HALF_DUPLEX BIT(0) /* can't do full duplex */