As it breaks g_ether on my Baytrail FFRD8 device. Everything starts out
fine, but after a bit of data has been transferred it just stops
flowing.
Note that I do get a bunch of these "NOHZ: local_softirq_pending 08"
when booting the machine, but I'm not really sure if they're related
to this problem.
Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Igor Kotrasinski [Thu, 20 Aug 2015 08:00:01 +0000 (10:00 +0200)]
usb: gadget: composite: fill bcdUSB for any gadget max speed
When handling device GET_DESCRIPTOR, composite gadget driver fills
the bcdUSB field only if the gadget supports USB 3.0. Otherwise
the field is left unfilled.
For consistency, set bcdUSB to 0x0200 for gadgets that don't
support superspeed.
It's correct to use 0x0200 for any setting that doesn't use
superspeed, since USB 2.0 devices can restrict themselves to
full speed only. It is NOT correct to use 0x0210, since BOS
descriptors are handled only if gadget_is_superspeed() is
satisfied, otherwise it results in a stall.
Signed-off-by: Igor Kotrasinski <i.kotrasinsk@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Hans de Goede [Sun, 20 Sep 2015 21:02:19 +0000 (17:02 -0400)]
musb: sunxi: Make sunxi musb glue work without MUSB_PIO_ONLY
Now that it is possible to build in multiple dma engines, we can no longer
require MUSB_PIO_ONLY to be set when using the sunxi musb glue.
This patch adds dummy dma hooks to make the musb glue work without
MUSB_PIO_ONLY. This hooks are fake because we do not support dma with
musb on sunxi. The Allwinnner Android kernels have some dma code, but it
is disabled as Allwinner never managed to get it to work.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
John Youn [Sat, 3 Oct 2015 03:32:17 +0000 (20:32 -0700)]
usb: dwc3: pci: Set enblslpm quirk for Synopsys platforms
Certain Synopsys prototyping PHY boards are not able to meet timings
constraints for LPM. This allows the PHY to meet those timings by
leaving the PHY clock running during suspend.
Cc: <stable@vger.kernel.org> # v3.18+ Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
John Youn [Sat, 26 Sep 2015 06:47:53 +0000 (23:47 -0700)]
usb: dwc3: pci: trivial: Formatting
Fix the alignment of the PCI device definitions. Also change the hex
digit capitalization of one constant to make it consistent with the
rest of the file and driver.
Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
John Youn [Sat, 5 Sep 2015 02:15:10 +0000 (19:15 -0700)]
usb: dwc3: Support Synopsys USB 3.1 IP
This patch allows the dwc3 driver to run on the new Synopsys USB 3.1
IP core, albeit in USB 3.0 mode only.
The Synopsys USB 3.1 IP (DWC_usb31) retains mostly the same register
interface and programming model as the existing USB 3.0 controller IP
(DWC_usb3). However the GSNPSID and version numbers are different.
Add checking for the new ID to pass driver probe.
Also, since the DWC_usb31 version number is lower in value than the
full GSNPSID of the DWC_usb3 IP, we set the high bit to identify
DWC_usb31 and to ensure the values are higher.
Finally, add a documentation note about the revision numbering scheme.
Any future revision checks (for STARS, workarounds, and new features)
should take into consideration how it applies to both the 3.1/3.0 IP.
Cc: <stable@vger.kernel.org> # v3.18+ Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
John Youn [Fri, 7 Aug 2015 18:04:14 +0000 (11:04 -0700)]
usb: dwc3: pci: Add the Synopsys HAPS AXI Product ID
This ID is for the Synopsys DWC_usb3 core with AXI interface on PCIe
HAPS platform. This core has the debug registers mapped at a separate
BAR in order to support enhanced hibernation.
Cc: <stable@vger.kernel.org> # v3.18+ Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Roman Bacik [Fri, 11 Sep 2015 01:13:43 +0000 (18:13 -0700)]
usb: dwc2: gadget: parity fix in isochronous mode
USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.
This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.
Signed-off-by: Roman Bacik <rbacik@broadcom.com> Reviewed-by: Abhinav Ratna <aratna@broadcom.com> Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com> Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Marek Szyprowski [Mon, 21 Sep 2015 10:16:11 +0000 (12:16 +0200)]
usb: dwc2: fix unbalanced phy control
Even when DWC2 is in (internal) suspended state, it should disable PHY
in suspend and then enable it in resume. This patch fixes unbalanced PHY
control sequence.
Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Marek Szyprowski [Mon, 21 Sep 2015 10:16:10 +0000 (12:16 +0200)]
usb: dwc2: remove non-functional clock gating
During typical gadget operation, dwc2 clock was enabled 3 times: from
dwc2_gadget_init(), dwc2_hsotg_udc_start() and dwc2_hsotg_pullup(), and
then disabled in s3c_hsotg_pullup(), s3c_hsotg_udc_stop() and
dwc2_hsotg_remove(). This really makes no sense, so leave clock control
code only in dwc2_gadget_init/remove functions.
Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Marek Szyprowski [Mon, 21 Sep 2015 10:16:09 +0000 (12:16 +0200)]
usb: dwc2: remove double call to dwc2_hsotg_of_probe
This patch removes doubled call to dwc2_hsotg_of_probe() function.
Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Yunzhi Li [Tue, 29 Sep 2015 10:25:01 +0000 (12:25 +0200)]
usb: dwc2: gadget: fix a memory use-after-free bug
When dwc2_hsotg_handle_unaligned_buf_complete() hs_req->req.buf
already destroyed, in dwc2_hsotg_unmap_dma(), it touches
hs_req->req.dma again, so dwc2_hsotg_unmap_dma() should be called
before dwc2_hsotg_handle_unaligned_buf_complete(). Otherwise, it
will cause a bad_page BUG, when allocate this memory page next
time.
This bug led to the following crash:
BUG: Bad page state in process swapper/0 pfn:2bdbc
[ 26.820440] page:eed76780 count:0 mapcount:0 mapping: (null) index:0x0
[ 26.854710] page flags: 0x200(arch_1)
[ 26.885836] page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set
[ 26.919179] bad because of flags:
[ 26.948917] page flags: 0x200(arch_1)
[ 26.979100] Modules linked in:
[ 27.008401] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W3.14.0 #17
[ 27.041816] [<c010e1f8>] (unwind_backtrace) from [<c010a704>] (show_stack+0x20/0x24)
[ 27.076108] [<c010a704>] (show_stack) from [<c087eea8>] (dump_stack+0x70/0x8c)
[ 27.110246] [<c087eea8>] (dump_stack) from [<c01ce0b8>] (bad_page+0xfc/0x12c)
[ 27.143958] [<c01ce0b8>] (bad_page) from [<c01ce65c>] (get_page_from_freelist+0x3e4/0x50c)
[ 27.179298] [<c01ce65c>] (get_page_from_freelist) from [<c01ce9a0>] (__alloc_pages_nodemask)
[ 27.216296] [<c01ce9a0>] (__alloc_pages_nodemask) from [<c01cf00c>] (__get_free_pages+0x20/)
[ 27.252326] [<c01cf00c>] (__get_free_pages) from [<c01e5bec>] (kmalloc_order_trace+0x34/0xa)
[ 27.288295] [<c01e5bec>] (kmalloc_order_trace) from [<c0203304>] (__kmalloc+0x40/0x1ac)
[ 27.323751] [<c0203304>] (__kmalloc) from [<c052abc0>] (dwc2_hsotg_ep_queue.isra.12+0x7c/0x1)
[ 27.359937] [<c052abc0>] (dwc2_hsotg_ep_queue.isra.12) from [<c052af88>] (dwc2_hsotg_ep_queue)
[ 27.397478] [<c052af88>] (dwc2_hsotg_ep_queue_lock) from [<c0554110>] (rx_submit+0xfc/0x164)
[ 27.433619] [<c0554110>] (rx_submit) from [<c05546e8>] (rx_complete+0x22c/0x230)
[ 27.468872] [<c05546e8>] (rx_complete) from [<c052b528>] (dwc2_hsotg_complete_request+0xfc/0)
[ 27.506240] [<c052b528>] (dwc2_hsotg_complete_request) from [<c052bba0>] (dwc2_hsotg_handle_o)
[ 27.545401] [<c052bba0>] (dwc2_hsotg_handle_outdone) from [<c052be70>] (dwc2_hsotg_epint+0x2c)
[ 27.583689] [<c052be70>] (dwc2_hsotg_epint) from [<c052c750>] (dwc2_hsotg_irq+0x1dc/0x4ac)
[ 27.621041] [<c052c750>] (dwc2_hsotg_irq) from [<c01682e0>] (handle_irq_event_percpu+0x70/0x)
[ 27.659066] [<c01682e0>] (handle_irq_event_percpu) from [<c01684ec>] (handle_irq_event+0x4c)
[ 27.697322] [<c01684ec>] (handle_irq_event) from [<c016bae0>] (handle_fasteoi_irq+0xc8/0x11)
[ 27.735451] [<c016bae0>] (handle_fasteoi_irq) from [<c0167b8c>] (generic_handle_irq+0x30/0x)
[ 27.773918] [<c0167b8c>] (generic_handle_irq) from [<c0167ca4>] (__handle_domain_irq+0x84/0)
[ 27.812018] [<c0167ca4>] (__handle_domain_irq) from [<c01003b0>] (gic_handle_irq+0x48/0x6c)
[ 27.849695] [<c01003b0>] (gic_handle_irq) from [<c010b340>] (__irq_svc+0x40/0x50)
[ 27.886907] Exception stack(0xc0d01ee0 to 0xc0d01f28)
Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Yunzhi Li <lyz@rock-chips.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Controller enters hibernation through suspend interrupt on
disconnection. On connection, session request interrupt is generated.
dwc2 must exit hibernation and restore state from this interrupt
before continuing.
In host mode, exit from hibernation is handled by bus_resume function.
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: handle reset interrupt before endpoint interrupts
If system is loaded, reset, enum-done and setup interrupts can occur
at the same time. Current interrupt handling sequence will handle
setup packet's interrupt before handling reset interrupt. Which will
break the enumeration process. Correct sequence is to handle reset,
enum-done and then any other endpoint interrupts.
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: exit hibernation before power down
When disconnecting cable, controller will detect a suspend condition
and enter partial power down. If vbus_session is called by the phy
driver during hibernation, make sure controller exit hibernation
before it is accessed.
Signed-off-by: Jianqiang Tang <jianqiang.tang@intel.com> Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: only reset core after addressed state
There is a 200ms guard period to avoid unnecessary resets of the dwc2
ip. This delay sometimes prove to be too large when usbcv is run with
an ehci host. dwc2 only needs to be reset after addressed state.
Change the logic to reset ip after addressed state.
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: kill ep0 requests before reinitializing core
Make sure there are no requests pending on ep0 before reinitializing
core. Otherwise, dwc2_hsotg_enqueue_setup will fail afterwards.
Also, take hsotg->lock before calling
dwc2_hsotg_core_init_disconnected() from dwc2_conn_id_status_change()
as dwc2_hsotg_complete_request() expect lock to be held.
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: stop current transfer on dequeue
If the request being dequeued is already started, disable endpoint
to stop the transfer and then call dwc2_hsotg_complete_request().
Endpoint will be re-enabled on next call to dwc2_hsotg_start_req().
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
dwc2_hsotg_start_req starts a request only if endpoint is not stalled.
Ignore this check for ep0 as core will clear DOEPCTL0.Stall after
sending stall handshake. Prepare instead for receiving next setup
packet.
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: set op_state in vbus_session call
Some device may have external id pin control enabled, so op_state
will not be set on id pin interrupt change.
Thus, ensure op_state is set to peripheral during vbus detection.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
While building allmodconfig on avr32 the build failed with the error:
"at91_pmc_base" [drivers/usb/gadget/udc/atmel_usba_udc.ko] undefined!
On checking the code it turned out that if CONFIG_OF is defined then it
is using at91_pmc_read() which is using at91_pmc_base. And unless
COMMON_CLK_AT91 is defined we donot have at91_pmc_base. And
COMMON_CLK_AT91 is available with AT91 architecture.
Mention the dependency such that this driver builds with avr32 only if
OF is not enabled.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
The condition checking for irq_registered, regs, mem_region and active
are not required as this is the remove function. And we are in the
remove means that probe was successful and they can never be NULL at
this point of code.
It was required in the original code as the remove function was part of
the error handler of probe function.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
We have the function free_dma_pools() which frees all the dma pools. Use
it instead of calling all the functions separately. The if conditions
for data_requests and stp_requests are also not required here as this is
the remove function and we are here means probe has succeeded and dma
has been successfully allocated, so they cannot be NULL here.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: gadget: ensure lx_state corresponds to current state
Correctly update lx_state on gadget connection and disconnection.
When usb cable is disconnected, lx_state must be updated to L3 as
controller could be in power off state.
When usb cable is connected, lx_state must be updated to L0 as
controller is powered.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: host: kill remaining urbs using -ECONNRESET status
On a disconnect, dwc2 will kill all remaining urbs from qh list.
urbs are given back to hcd with -ETIMEDOUT status.
Some usb device driver, like mass storage, will unlink all urbs
using usb_hcd_unlink_urb when receiving a negative status different
from -ECONNRESET.
The following flow will then happen:
dwc2_hcd_disconnect()
-> dwc2_kill_all_urbs() try to kill first pending urb.
-> dwc2_host_complete(-ETIMEDOUT)
-> usb_hcd_giveback_urb(-ETIMEDOUT)
-> sg_complete()
-> usb_unlink_urb()
-> usb_put_dev(urb->dev)
-> dwc2_kill_all_urbs() try to kill next pending urb.
-> dwc2_host_complete(-ETIMEDOUT)
-> usb_hcd_giveback_urb(-ETIMEDOUT)
-> NULL pointer dereferencing because urb->dev has been freed for all
urbs of this device.
The root cause of this NULL pointer is to call call usb_unlink_urb()
while we are killing all urbs. To avoid this return urb with
-ECONNRESET status
This issue usually happens while removing mass storage device during
transfer.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: host: wait 3ms for controller stabilization
Some high speed mass storage devices fail to enumerate with following
error:
Cannot enable port %i. Maybe the USB cable is bad?
This happens only when the device is plugged while the controller
is in hibernation state. After exiting hibernation, the controller
detects the device as a low speed device and fail to enumerate it.
Problem occurs only if HPRT0.PWR bit is programmed in a too short
delay after exiting hibernation. Dumping hprt register in
_dwc2_hcd_resume() directly after dwc2_exit_hibernation() shows that
HPRT0.LNSTS (D+/D- level) becomes valid approximately 2ms after
exiting hibernation.
Since dwc2_exit_hibernation() is called from atomic context, move the
delay out of this function.
Delay value is experimental and not mentioned in Synopsys
documentation. To be on the safe side 3ms delay is used.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
If an interrupt rises during hibernation process, dwc2 will assert
interrupt line to interrupt controller. If interrupt is level
sensitive, interrupt handler will be called in a loop because dwc2
will not be able to clear it while controller is hibernated.
Thus, clear all controller interrupts before hibernation entry.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Frame number is reset in hardware after exiting hibernation.
Thus, reset frame_number and ensure qh are queued with correct
sched_frame.
Otherwise, qh->sched_frame may be too high compared to
current frame number (which is 0). This can delay addition of qh in
the list of transfers until frame number reaches qh->sched_frame.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: host: enter hibernation during bus suspend
Disable controller power and enter hibernation when usb bus is
suspended. A phy driver is required to disable the power of the
controller and detect remote-wakeup or disconnection since the
controller will not be able to detect these in this state.
Once the phy driver detects bus activity, it must call
usb_hcd_resume_root_hub.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: host: create a function to handle port_resume
port resume sequence may be used in different places. Create a
function to handle it. Make hprt0 read-modify-write atomic and
clear HPRT0_SUSP for both writes as it is a "read, write-set,
and self-clear (R_WS_SC)" bit. Since the lock is released
between the writes, read hprt0 again.
Since the phy clock is stopped in dwc2_port_suspend(), enable it
here and remove the PCGCTL write from dwc2_hcd_hub_control()
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
usb: dwc2: host: don't clear hprt0 status bits when exiting hibernation
When entering hibernation hprt0 must be read using dwc2_read_hprt0().
Otherwise, any set hprt0 status bits will be cleared when restoring
hprt0 on exit from hibernation.
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Felipe Balbi [Mon, 28 Sep 2015 19:49:02 +0000 (14:49 -0500)]
usb: dwc3: gadget: use update transfer command
If we get a Xfer Not Ready event with reason
"Transfer Active" it means endpoint is still
transferring data and we can use that to issue
update transfer for this particular endpoint
in case we have pending requests in our queue.
Felipe Balbi [Mon, 21 Sep 2015 19:32:00 +0000 (14:32 -0500)]
usb: dwc3: gadget: start transfer on XFER_COMPLETE
if by the time we get to XFER_COMPLETE we have
pending requests to be processed, instead of waiting
for a following XFER_NOT_READY, let's start the request
right away and, maybe, save the time of a few NAKs
due to lack of started transfers.
Heikki Krogerus [Mon, 21 Sep 2015 08:14:33 +0000 (11:14 +0300)]
usb: dwc3: st: prepare the driver for generic usb_get_dr_mode function
of_usb_get_dr_mode will be converted into more generic
usb_get_dr_mode function that will take struct device
instead of struct device_node as its parameter.
To make the conversion possible later, waiting for the
platform device for dwc3 to be populated before calling
of_usb_get_dr_mode.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> CC: Giuseppe Cavallaro <peppe.cavallaro@st.com> CC: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:11:04 +0000 (12:11 +0200)]
usb: gadget: legacy: tcm: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of tcm, ep->driver_data was used only for endpoint claiming so
we can simplify code by reducing it. We also remove give_back_ep()
function which is not needed after all - when error code is returned
from bind() function, composite will release all endpoints anyway.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:11:03 +0000 (12:11 +0200)]
usb: gadget: legacy: dbgp: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of dbgp, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:11:02 +0000 (12:11 +0200)]
usb: gadget: u_serial: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of u_serial ep->driver_data stores pointer to struct gs_port,
which is referenced in many places in code. Code using ep->driver_data
to mark endpoint as enabled/disabled has been removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:11:01 +0000 (12:11 +0200)]
usb: gadget: u_ether: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of u_ether we only need to store in ep->driver_data pointer to
struct eth_dev, as it's used in rx_complete() and tx_complete() callbacks.
All other uses of ep->driver_data are now meaningless and can be safely
removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:11:00 +0000 (12:11 +0200)]
usb: gadget: f_uvc: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_uvc, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:59 +0000 (12:10 +0200)]
usb: gadget: f_uac2: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_uac2, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:58 +0000 (12:10 +0200)]
usb: gadget: f_uac1: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_uac1, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:57 +0000 (12:10 +0200)]
usb: gadget: f_subset: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_subset, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:56 +0000 (12:10 +0200)]
usb: gadget: f_sourcesink: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_sourcesink we only need to store in ep->driver_data pointer
to struct f_sourcesink, as it's used in source_sink_complete() callback.
All other uses of ep->driver_data are now meaningless and can be safely
removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:55 +0000 (12:10 +0200)]
usb: gadget: f_serial: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_serial, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:54 +0000 (12:10 +0200)]
usb: gadget: f_rndis: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_rndis, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:53 +0000 (12:10 +0200)]
usb: gadget: f_printer: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_printer we only need to store in ep->driver_data pointer to
struct printer_dev, as it's used in rx_complete() and tx_complete()
callbacks. All other uses of ep->driver_data are now meaningless and can
be safely removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:52 +0000 (12:10 +0200)]
usb: gadget: f_phonet: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_phonet we only need to store in ep->driver_data pointer to
struct f_phonet, as it's used in pn_tx_complete() and pn_rx_complete()
callbacks. All other uses of ep->driver_data are now meaningless and can
be safely removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:51 +0000 (12:10 +0200)]
usb: gadget: f_obex: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_obex, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:50 +0000 (12:10 +0200)]
usb: gadget: f_ncm: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_ncm, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:49 +0000 (12:10 +0200)]
usb: gadget: f_midi: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_midi we only need to store in ep->driver_data pointer to
struct f_midi, as it's used in f_midi_complete() callback and related
functions. All other uses of ep->driver_data are now meaningless and
can be safely removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:48 +0000 (12:10 +0200)]
usb: gadget: f_mass_storage: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_mass_storage we only need to store in ep->driver_data
pointer to struct fsg_common, which is used in bulk_in_complete() and
bulk_out_complete() callbacks. All other uses of ep->driver_data are now
meaningless and can be safely removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:47 +0000 (12:10 +0200)]
usb: gadget: f_loopback: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_hid we only need to store in ep->driver_data pointer to
struct f_loopback, as it's used in loopback_complete() callback. All
other uses of ep->driver_data are now meaningless and can be safely
removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:46 +0000 (12:10 +0200)]
usb: gadget: f_hid: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_hid we only need to store in ep->driver_data pointer to
struct f_hidg, as it's used in f_hidg_req_complete() callback. All
other uses of ep->driver_data are now meaningless and can be safely
removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:45 +0000 (12:10 +0200)]
usb: gadget: f_eem: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_ecm, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:44 +0000 (12:10 +0200)]
usb: gadget: f_acm: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_acm we only need to store in ep->driver_data pointer to
struct f_acm, as it's used in acm_complete_set_line_coding() callback.
All other uses of ep->driver_data are now meaningless and can be safely
removed.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:43 +0000 (12:10 +0200)]
usb: gadget: f_ecm: eliminate abuse of ep->driver data
Since ep->driver_data is not used for endpoint claiming, neither for
enabled/disabled state storing, we can reduce number of places where
we read or modify it's value, as now it has no particular meaning for
function or framework logic.
In case of f_ecm, ep->driver_data was used only for endpoint claiming
and marking endpoints as enabled, so we can simplify code by reducing
it.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:42 +0000 (12:10 +0200)]
usb: gadget: introduce 'enabled' flag in struct usb_ep
This patch introduces 'enabled' flag in struct usb_ep, and modifies
usb_ep_enable() and usb_ep_disable() functions to encapsulate endpoint
enabled/disabled state. It helps to avoid enabling endpoints which are
already enabled, and disabling endpoints which are already disables.
From now USB functions don't have to remember current endpoint
enable/disable state, as this state is now handled automatically which
makes this API less bug-prone.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:41 +0000 (12:10 +0200)]
usb: gadget: epautoconf: add usb_ep_autoconfig_release() function
This patch introduces usb_ep_autoconfig_release() function which allows
to release endpoint previously obtained from usb_ep_autoconfig() during
USB function bind.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Robert Baldyga [Wed, 16 Sep 2015 10:10:40 +0000 (12:10 +0200)]
usb: gadget: f_ncm: obtain cdev from function instead of driver_data
The 'driver_data' field in ep0 is never set to pointer to cdev, so we
have to obtain it from another source as in this context ep->driver_data
contains invalid data.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
projects / linux-beck.git / log