kernel.git/drivers/usb/dwc2/core.h, branch linux-4.2.y

usb: dwc2: embed storage for reg backup in struct dwc2_hsotg

2015-07-06T17:34:08Z

Register backup function can be called from atomic context. Instead of using atomic memory pool, embed backup storage space in struct dwc2_hsotg. Also add a valid flag in each struct as NULL pointer can't be used as the content validity check any more. Acked-by: John Youn Tested-by: Heiko Stuebner Tested-by: Doug Anderson Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi

usb: dwc2: add hibernation core parameter

2015-04-29T20:20:17Z

dwc2 may not be able to exit from hibernation if the hardware does not provide a way to detect resume signalling in this state. Thus, add the possibility to disable hibernation feature. Acked-by: John Youn Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi

usb: dwc2: set parameter values in probe function

2015-04-29T20:19:02Z

So the parameters can be used in both host and gadget modes. Also consolidate param functions in the core.h Acked-by: John Youn Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi

usb: dwc2: add external_id_pin_ctl core parameter

2015-04-29T20:18:55Z

This is required due to an Intel specific hardware issue. Where id- pin setup causes glitches on the interrupt line when CONIDSTSCHG interrupt is enabled. Specify external_id_pin_ctl when an external driver (for example phy) can handle id change, so that CONIDSTSCHG interrupt can be disabled from the controller. Acked-by: John Youn Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi

usb: dwc2: implement hibernation during bus suspend/resume

2015-04-29T20:18:43Z

Allow controller to enter in hibernation during usb bus suspend and inform both phy and gadget about the suspended state. While in hibernation, the controller can't detect the resume condition. An external mechanism must call usb_phy_set_suspend on resume. Exit hibernation when controller gets the resume interrupt and inform only gadget driver about it. Acked-by: John Youn Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi

usb: dwc2: add controller hibernation support

2015-04-29T20:18:37Z

When suspending usb bus, phy driver may disable controller power. In this case, registers need to be saved on suspend and restored on resume. Acked-by: John Youn Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi

usb: dwc2: debugfs: add support for complete register dump

2015-04-29T20:18:32Z

Dump all registers to take a complete snapshot of dwc2 state. Code is inspired by dwc3/debugfs.c Acked-by: John Youn Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi

usb: dwc2: move debugfs code to a separate file

2015-04-29T20:18:25Z

Prepare to add more debug code. Moreover, don't save dentry * for each file in struct dwc2_hsotg as clean up is done with debugfs_remove_recursive(). s3c_hsotg_delete_debug() is removed altogether for the same reason. Acked-by: John Youn Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi

usb: dwc2: rework initialization of host and gadget in dual-role mode

2015-03-12T17:18:49Z

If device is configured to work only in HOST or DEVICE mode, there is no point in initializing both subdrivers. This patch also fixes resource leakage if host subdriver fails to initialize. Acked-by: John Youn Signed-off-by: Marek Szyprowski Signed-off-by: Felipe Balbi

usb: dwc2: gadget: add reset flag in init function

2015-01-30T16:32:41Z

Add a flag to request physical reset of the controller when s3c_hsotg_core_init_disconnected is called. During the usb reset, controller must not be fully reconfigured and resetted. Else this leads to shorter chirp-k duration during enumeration. Tested-by: Robert Baldyga Acked-by: John Youn Signed-off-by: Gregory Herrero Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi