linux-toradex.git/drivers/usb/dwc3/gadget.c, branch v3.14.2

Merge tag 'v3.13-rc4' into next

2013-12-19T15:18:53+00:00

Linux 3.13-rc4

* tag 'v3.13-rc4': (1001 commits)
  Linux 3.13-rc4
  null_blk: mem garbage on NUMA systems during init
  radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()
  Revert "selinux: consider filesystem subtype in policies"
  igb: Fix for issue where values could be too high for udelay function.
  i40e: fix null dereference
  ARM: fix asm/memory.h build error
  dm array: fix a reference counting bug in shadow_ablock
  dm space map: disallow decrementing a reference count below zero
  mm: memcg: do not allow task about to OOM kill to bypass the limit
  mm: memcg: fix race condition between memcg teardown and swapin
  thp: move preallocated PTE page table on move_huge_pmd()
  mfd/rtc: s5m: fix register updating by adding regmap for RTC
  rtc: s5m: enable IRQ wake during suspend
  rtc: s5m: limit endless loop waiting for register update
  rtc: s5m: fix unsuccesful IRQ request during probe
  drivers/rtc/rtc-s5m.c: fix info->rtc assignment
  include/linux/kernel.h: make might_fault() a nop for !MMU
  drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
  procfs: also fix proc_reg_get_unmapped_area() for !MMU case
  ...

Signed-off-by: Felipe Balbi

usb: gadget: add "maxpacket_limit" field to struct usb_ep

2013-12-17T19:17:41+00:00

This patch adds "maxpacket_limit" to struct usb_ep. This field contains
maximum value of maxpacket supported by driver, and is set in driver probe.
This value should be used by autoconfig() function, because value of field
"maxpacket" is set to value from endpoint descriptor when endpoint becomes
enabled. So when autoconfig() function will be called again for this endpoint,
"maxpacket" value will contain wMaxPacketSize from descriptior instead of
maximum packet size for this endpoint.

For this reason this patch adds new field "maxpacket_limit" which contains
value of maximum packet size (which defines maximum endpoint capabilities).
This value is used in ep_matches() function used by autoconfig().

Value of "maxpacket_limit" should be set in UDC driver probe function, using
usb_ep_set_maxpacket_limit() function, defined in gadget.h. This function
set choosen value to both "maxpacket_limit" and "maxpacket" fields.

This patch modifies UDC drivers by adding support for maxpacket_limit.

Signed-off-by: Robert Baldyga 
Signed-off-by: Kyungmin Park 
Signed-off-by: Felipe Balbi

usb: dwc3: set gadget's quirk ep_out_align_size

2013-12-10T04:44:08+00:00

DWC3 requires epout to have buffer size aligned to MaxPacketSize value.
This patch sets necessary quirk for it.

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

usb: dwc3: fix implementation of endpoint wedge

2013-11-25T16:56:45+00:00

The dwc3 UDC driver doesn't implement endpoint wedging correctly.
When an endpoint is wedged, the gadget driver should be allowed to
clear the wedge by calling usb_ep_clear_halt().  Only the host is
prevented from resetting the endpoint.

This patch fixes the implementation.

Signed-off-by: Alan Stern 
Tested-by: Pratyush Anand 
Cc: 
Signed-off-by: Felipe Balbi

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