usb: musb: add support for JZ4740 usb device controller

Add support for Ingenic JZ4740 USB Device Controller through a
specific musb glue layer.

JZ4740 UDC not being OTG compatible and missing some hardware
registers, this musb glue layer is written from scratch to be used in
gadget mode only and take silicon design specifics into account.

Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 57dfc0cedb00..14d7e725c2ff 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -93,6 +93,12 @@ config USB_MUSB_BLACKFIN
 config USB_MUSB_UX500
         tristate "Ux500 platforms"
 
+config USB_MUSB_JZ4740
+        tristate "JZ4740"
+        depends on MACH_JZ4740 || COMPILE_TEST
+        depends on USB_MUSB_GADGET
+        depends on USB_OTG_BLACKLIST_HUB
+
 endchoice
 
 config USB_MUSB_AM335X_CHILD
@@ -100,7 +106,7 @@ config USB_MUSB_AM335X_CHILD
 
 choice
         prompt 'MUSB DMA mode'
-        default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM
+        default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM || USB_MUSB_JZ4740
         default USB_UX500_DMA if USB_MUSB_UX500
         default USB_INVENTRA_DMA if USB_MUSB_OMAP2PLUS || USB_MUSB_BLACKFIN
         default USB_TI_CPPI_DMA if USB_MUSB_DAVINCI