u-boot.git/drivers/usb/dwc3, branch v2015.07

samsung: usb: phy: Support for DWC3 PHY

2015-06-08T13:25:44Z

New files, namely samsung_usb_phy.c and samsung-usb-phy-uboot.h have been added to u-boot to provide proper PHY handling at Exynos5 SoCs. This code is used thereafter in the board_usb_init() call. Signed-off-by: Lukasz Majewski Cc: Minkyu Kang Cc: Marek Vasut

usb: dwc3: Correct clean up code for requests

2015-04-14T03:48:12Z

For u-boot dwc3 driver the scatter gather list support has been removed from original linux code. It is correct, since we try to send one request at a time. However, the cleanup left spurious break, which caused early exit from loop at dwc3_cleanup_done_reqs() function. As a result the dwc3_gadget_giveback() wasn't called and caused USB Mass Storage to hang. This commit removes this problem and refactor the code to remove superfluous do { } while(1) loop. Test HW: Odroid XU3 (with ./test/ums/ums_gadget_test.sh) Signed-off-by: Lukasz Majewski

usb: dwc3: gadget: Set non EP0 max packet limit to 512B

2015-04-14T03:48:12Z

Commit "drivers/dwc3: add a workaround for too small OUT requests" sets max packet for OUT requests when transfer is smaller. Until this change the default maxpacket for non EP0 EPs was 1024. This is too much, since UMS LBA size is 512B Signed-off-by: Lukasz Majewski

usb: dwc3: gadget: Set all ctrl fields of Transfer Control Blocks (TRB) to be LST

2015-04-14T03:48:12Z

It turned out that current dwc3 gadget code is preparing multiple TRBs for a transfer. Unfortunately, when multiple requests are in the same queue, only for the last one the LST (last) ctrl bit is set. Due to that dwc3 HW executes all TRBs up till the one marked as last. Unfortunately, UMS requires call of ->complete callback after any send TRB. This is the reason for "hangs" in executing UMS. This code simplifies this situation and set each TRB's ctrl field bit to be last (LST bit). Signed-off-by: Lukasz Majewski

usb: dwc3: optimize interrupt loop

2015-04-14T03:48:12Z

There is no point in calling dwc3_thread_interrupt() if no event is pending. There is also no point in flushing event cache in EVERY loop iteration. Signed-off-by: Marek Szyprowski

usb: dwc3: add a workaround for too small OUT requests

2015-04-14T03:48:12Z

DWC3 hangs on OUT requests smaller than maxpacket size, so HACK the request length to be at least equal to maxpacket size. Signed-off-by: Marek Szyprowski

usb: dwc3: make dwc3_set_mode to static

2015-04-14T03:48:12Z

This commit makes the dwc3_set_mode() as static, to prevent collisions. Signed-off-by: Joonyoung Shim Signed-off-by: Lukasz Majewski

usb: dwc3: Remove BIT(x) macro from DWC3's gadget code

2015-04-14T03:48:12Z

The BIT() macro is used only in those places, so it is reasonable to replace it by a constant value. Signed-off-by: Lukasz Majewski

usb: dwc3: Makefile: Make dwc3 driver compile in u-boot

2015-04-14T03:48:10Z

Now that the entire dwc3 driver is adapted to compile with uboot build, modify the Makefiles so that the dwc3 driver can be built. Signed-off-by: Kishon Vijay Abraham I Reviewed-by: Lukasz Majewski

usb: dwc3: Add chained TRB support for ep0

2015-04-14T03:48:10Z

dwc3 can do only max packet aligned transfers. So in case request length is not max packet aligned and is bigger than DWC3_EP0_BOUNCE_SIZE two chained TRBs is required to handle the transfer. Signed-off-by: Kishon Vijay Abraham I Reviewed-by: Lukasz Majewski