linux-toradex.git/drivers/usb/dwc3/gadget.c, branch v3.12.2

usb: dwc3: gadget: avoid memory leak when failing to allocate all eps

2013-09-17T16:05:01+00:00

If dwc3_gadget_init_endpoint() fails after allocate some of the eps, we
need to free their memory to avoid leak.

Signed-off-by: David Cohen 
Signed-off-by: Felipe Balbi

usb: dwc3: gadget: introduce dwc3_process_event_buf

2013-07-29T10:57:01+00:00

in order to make our IRQ handler thread easier
to read, we re-factor the inner loop to a separate
function.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: rename dwc3_process_event_buf

2013-07-29T10:57:00+00:00

that function isn't really processing any event
buffer, rather just checking whether it contains
events to be processed.

Due to that reason, we're reaning it to dwc3_check_event_buf()
instead.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: get rid of IRQF_ONESHOT

2013-07-29T10:56:59+00:00

We can make use of bit 31 of the GEVNTSIZ(n)
registers to mask/unmask interrupts from that
particular interrupter.

With that feature, we can easily drop IRQF_ONESHOT
from our driver which makes it possible to
properly change IRQ priorities when using RT
patchset *and* it allows us to make use of the
scheduler to choose the proper time to handle
this IRQ thread.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: don't enable LPM early

2013-07-29T10:56:58+00:00

LPM is enabled in Connection Done interrupt,
there's no need to enable it early.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: add a debugging print when initializing endpoints

2013-07-29T10:56:56+00:00

that way we get debugging information when
enabling verbose debug of the driver.

It will be no-op otherwise.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: move direction setting up

2013-07-29T10:56:55+00:00

no functional changes, just grouping dep
initialization.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: move debugging print around

2013-07-29T10:56:54+00:00

by moving that dev_vdbg() to the internal
__dwc3_gadget_ep_enable() we get the print
even when enable ep0, which calls the internal
function directly.

Signed-off-by: Felipe Balbi

usb: dwc3: gadget: drop dwc3 manual phy control

2013-07-29T10:56:52+00:00

Recent versions of the core, can suspend and resume
the PHYs automatically, so we don't need to fiddle
with dwc3's Global PHY registers at all.

On versions prior to 1.94a this patch will mean
that we will never ask dwc3 to suspend the PHY.

This is an acceptable behavior or such old versions
of the core, specially considering that the only
chip known to have a version prior to 1.94a was
OMAP5 ES1.0 and that's not supported in mainline
kernel, because it was just a test spin of OMAP5.

Signed-off-by: Felipe Balbi

usb: dwc3: make maximum-speed a per-instance attribute

2013-07-29T10:56:47+00:00

in order to allow different instances of the
core work in different maximum speeds, we will
move the maximum_speed module_parameter to
both DeviceTree (making use the new maximum-speed
DT property) and platform_data.

Signed-off-by: Felipe Balbi