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authorDmitry Osipenko <digetx@gmail.com>2017-08-16 13:32:39 +0300
committerPeter Chen <peter.chen@nxp.com>2017-08-24 12:40:42 +0300
commit581821ae7f7e2c4547945c65f1bcd357f5915aa5 (patch)
tree0d41d8f23c0563c15b8374100ec85895afe743c4 /include/linux/usb
parent7c3a8b81503ce8e6ab22341f0267d30085d17194 (diff)
downloadlinux-581821ae7f7e2c4547945c65f1bcd357f5915aa5.tar.xz
usb: chipidea: udc: Support SKB alignment quirk
NVIDIA Tegra20 UDC can't cope with unaligned DMA and require a USB gadget quirk that avoids SKB buffer alignment to be set in order to make Ethernet Gadget working. Later Tegra generations do not require that quirk. Let's add a new platform data flag that allows to enable USB gadget quirk for platforms that require it. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'include/linux/usb')
-rw-r--r--include/linux/usb/chipidea.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index c5fdfcf99828..d725cff7268d 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -58,6 +58,7 @@ struct ci_hdrc_platform_data {
#define CI_HDRC_OVERRIDE_TX_BURST BIT(10)
#define CI_HDRC_OVERRIDE_RX_BURST BIT(11)
#define CI_HDRC_OVERRIDE_PHY_CONTROL BIT(12) /* Glue layer manages phy */
+#define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
enum usb_dr_mode dr_mode;
#define CI_HDRC_CONTROLLER_RESET_EVENT 0
#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1