linux-toradex.git/drivers/usb/dwc2/platform.c, branch v4.1.10

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

2015-03-12T17:18:49+00:00

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: platform: add generic PHY framework support

2015-01-12T18:13:26+00:00

Get PHY parameters from devicetree and power off usb PHY during
system suspend.

Acked-by: Paul Zimmerman 
Signed-off-by: Yunzhi Li 
Signed-off-by: Felipe Balbi

usb: dwc2: Fix build warning when CONFIG_PM_SLEEP=n

2014-11-25T14:47:04+00:00

Building with bcm2835_defconfig, which has CONFIG_PM_SLEEP=n causes the
following build warning:

drivers/usb/dwc2/platform.c:227:12: warning: 'dwc2_suspend' defined but not used [-Wunused-function]
drivers/usb/dwc2/platform.c:237:12: warning: 'dwc2_resume' defined but not used [-Wunused-function]

Annotate these functions with '__maybe_unused' to prevent the warnings.

Reported-by: Olof's autobuilder 
Signed-off-by: Fabio Estevam 
Signed-off-by: Felipe Balbi

usb: dwc2: gadget: add mutex to serialize init/deinit calls

2014-11-21T15:07:38+00:00

This patch adds mutex, which protects initialization and
deinitialization procedures against suspend/resume methods. This mutex
will be needed by the updated suspend/resume calls, which tracks gadget
state.

Signed-off-by: Marek Szyprowski 
Acked-by: Paul Zimmerman 
Signed-off-by: Felipe Balbi

usb: dwc2: move usb_disabled() call to host driver only

2014-11-14T21:00:03+00:00

Since platform.c will get built for both Host and Gadget, if we leave the
usb_disabled() call in platform.c, it results in the following build error
when (!USB && USB_GADGET) condition is met.

ERROR: "usb_disabled" [drivers/usb/dwc2/dwc2_platform.ko] undefined!

Since usb_disabled() is mostly used to disable USB host functionality, move
the call the host portion for the DWC2 driver.

Acked-by: Paul Zimmerman 
Signed-off-by: Dinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc2: Update common interrupt handler to call gadget interrupt handler

2014-11-14T20:59:48+00:00

Make dwc2_handle_common_intr call the gadget interrupt function when operating
in peripheral mode. Remove the spinlock functions in s3c_hsotg_irq as
dwc2_handle_common_intr() already has the spinlocks.

Move the registeration of the IRQ to common code for platform and PCI.

Remove duplicate interrupt conditions that was in gadget, as those are handled
by dwc2 common interrupt handler.

Acked-by: Paul Zimmerman 
Signed-off-by: Dinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc2: convert to use dev_pm_ops API

2014-11-14T20:59:38+00:00

Update suspend/resume to use dev_pm_ops API.

Acked-by: Paul Zimmerman 
Signed-off-by: Dinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc2: Move gadget probe function into platform code

2014-11-14T20:59:32+00:00

This patch will aggregate the probing of gadget/hcd driver into platform.c.
The gadget probe funtion is converted into gadget_init that is now only
responsible for gadget only initialization. All the gadget resources are now
handled by platform.c

Since the host workqueue will not get initialized if the driver is configured
for peripheral mode only. Thus we need to check for wq_otg before calling
queue_work().

Also, we move spin_lock_init to common location for both host and gadget that
is either in platform.c or pci.c.

We also move suspend/resume code to common platform code.

Lastly, move the "samsung,s3c6400-hsotg" binding into dwc2_of_match_table.

Signed-off-by: Dinh Nguyen 
Acked-by: Paul Zimmerman 
Signed-off-by: Felipe Balbi

Revert "usb: dwc2: move "samsung,s3c6400-hsotg" into common platform"

2014-09-11T20:48:43+00:00

This reverts commit 8df438571cdbd5c4fcd1b25b19eea1ad5c3cf777.

This patch breaks building dwc2 driver in gadget mode at samsung
platforms.

Signed-off-by: Greg Kroah-Hartman

usb: dwc2: move "samsung,s3c6400-hsotg" into common platform

2014-09-08T22:47:04+00:00

Move the "samsung,s3c6400-hsotg" binding as the probe function in the gadget
driver will get removed when the dual-role driver is implemented.

Signed-off-by: Dinh Nguyen 
Acked-by: Paul Zimmerman 
Signed-off-by: Greg Kroah-Hartman