Felipe writes: usb: changes for v4.7 merge window Here's the big USB Gadget pull request. This time not as large as usual with only 57 non-merge commits. The most important part here is, again, all the work on dwc3. This time around we're treating all endpoints (except for control endpoint) exactly the same. They all have the same amount of TRBs on the ring, they all treat the ring as an actual ring with a link TRB pointing to the head, etc. We're also helping the host side burst (on SuperSpeed GEN1 or GEN2 at least) for as long as possible until the endpoint returns NRDY. Other than this big TRB ring rework on dwc3, we also have a dwc3-omap DMA initialization fix, some extra debugfs files to aid in some odd debug sessions and a complete removal of our FIFO resizing logic. We have a new quirk for some dwc3 P3 quirk in some implementations. The rest is basically non-critical fixes and the usual cleanups.
There's a bunch of information in the debug register set from dwc3 which is useful in some debugging scenarios. Let's dump them out in endpoint-specific directories and designated files. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Debugfs init failure is not so important. We can continue our job on this failure. Also no break need for debugfs_create_file call failure. Signed-off-by: Du, Changbin <changbin.du@intel.com> [felipe.balbi@linux.intel.com : - remove out-of-memory message, we get that from OOM. - switch dev_err() to dev_dbg() ] Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dwc->regset is allocated on dwc3_debugfs_init, and should be released on init failure or dwc3_debugfs_exit. Btw, The line "dwc->root = NULL" is unnecessary, so remove it. Signed-off-by: Du, Changbin <changbin.du@intel.com> [ felipe.balbi@linux.intel.com : add another err label for the new error condition ] Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This is a Linux-only driver which makes use of GPL-only symbols. It makes no sense to maintain Dual BSD/GPL licensing for this driver. Considering that the amount of work to use this driver in any different operating system would likely be as large as developing the driver from scratch and considering that we depend on GPL-only symbols, we will switch over to a GPL v2-only license. Cc: Anton Tikhomirov <av.tikhomirov@samsung.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes the wrong OTG_EVT,OTG_EVTEN and OTG_STS register offsets. While at that, also add a missing register to debugfs regdump utility. Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
when commit 388e5c5 (usb: dwc3: remove dwc3 dependency on host AND gadget.) changed the way debugfs files are created, it failed to note that 'mode' is necessary in Dual Role mode only while 'testmode' and 'link_state' are valid in Dual Role and Peripheral-only builds. Fix this while also converting pre- processor conditional to C conditionals. Signed-off-by: Felipe Balbi <balbi@ti.com>
nobody should be modifying that structure and debugfs has already being fixed to take const arguments, so we won't cause any new compile warnings. Signed-off-by: Felipe Balbi <balbi@ti.com>
whenever we grab an unknown link_state we were printing the entire register value as a integer but that's hardly useful; instead, let's print only the bogus state value. Signed-off-by: Felipe Balbi <balbi@ti.com>
for Reset and Resume we were going to print "UNKNOWN" when we actually knew what those were. Signed-off-by: Felipe Balbi <balbi@ti.com>