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authorVincent Cuissard <cuissard@marvell.com>2015-10-26 10:27:43 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2015-10-27 04:23:34 +0100
commit2bd832459a0827b8dcf13b345380b66f92089d74 (patch)
tree4394c323d19ae4979a91a73aa780c57d90e09f1c /include/net/nfc
parentfcd9d046fd8998cc984f2ff80e76f246ebca15b6 (diff)
downloadlinux-2bd832459a0827b8dcf13b345380b66f92089d74.tar.bz2
NFC: NCI: allow spi driver to choose transfer clock
In some cases low level drivers might want to update the SPI transfer clock (e.g. during firmware download). This patch adds this support. Without any modification the driver will use the default SPI clock (from pdata or device tree). Signed-off-by: Vincent Cuissard <cuissard@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/net/nfc')
-rw-r--r--include/net/nfc/nci_core.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index 77880bdf93a8..5a1572a34c49 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -394,6 +394,12 @@ struct nci_spi {
unsigned int xfer_udelay; /* microseconds delay between
transactions */
+
+ unsigned int xfer_speed_hz; /*
+ * SPI clock frequency
+ * 0 => default clock
+ */
+
u8 acknowledge_mode;
struct completion req_completion;