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path: root/drivers/usb/host/ehci-tilegx.c
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2017-11-07USB: host: ehci: Remove redundant license textGreg Kroah-Hartman1-10/+0
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04USB: add SPDX identifiers to all remaining files in drivers/usb/Greg Kroah-Hartman1-0/+1
It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/usb/ and include/linux/usb* files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-09usb: host: drop owner assignment from platform_driversWolfram Sang1-1/+0
These platform_drivers do not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-16tile: usb: Use irq_alloc/free_hwirqThomas Gleixner1-4/+4
No functional change. Just convert to the new interface. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Grant Likely <grant.likely@linaro.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Link: http://lkml.kernel.org/r/20140507154337.177939962@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2013-12-09usb: hcd: move controller wakeup setting initialization to individual driverPeter Chen1-0/+1
Individual controller driver has different requirement for wakeup setting, so move it from core to itself. In order to align with current etting the default wakeup setting is enabled (except for chipidea host). Pass compile test with below commands: make O=outout/all allmodconfig make -j$CPU_NUM O=outout/all drivers/usb Signed-off-by: Peter Chen <peter.chen@freescale.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-24Revert "Revert "USB: EHCI: support running URB giveback in tasklet context""Greg Kroah-Hartman1-1/+1
This reverts commit 3b8d7321ed4b8511e17048303b806ffcc2806077, which brings back commit 428aac8a81058e2303677a8fbf26670229e51d3a as it should be working for the 3.13-rc1 merge window now that Alan's other fixes are here in the tree already. Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-17Revert "USB: EHCI: support running URB giveback in tasklet context"Greg Kroah-Hartman1-1/+1
This reverts commit 428aac8a81058e2303677a8fbf26670229e51d3a. This isn't quite ready for 3.12, we need some more EHCI driver changes that are just now showing up. So revert this for now, and queue it up later for 3.13. Reported-by: Alan Stern <stern@rowland.harvard.edu> Cc: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12USB: EHCI: support running URB giveback in tasklet contextMing Lei1-1/+1
All 4 transfer types can work well on EHCI HCD after switching to run URB giveback in tasklet context, so mark all HCD drivers to support it. Also we don't need to release ehci->lock during URB giveback any more. >From below test results on 3 machines(2 ARM and one x86), time consumed by EHCI interrupt handler droped much without performance loss. 1 test description 1.1 mass storage performance test: - run below command 10 times and compute the average performance dd if=/dev/sdN iflag=direct of=/dev/null bs=200M count=1 - two usb mass storage device: A: sandisk extreme USB 3.0 16G(used in test case 1 & case 2) B: kingston DataTraveler G2 4GB(only used in test case 2) 1.2 uvc function test: - run one simple capture program in the below link http://kernel.ubuntu.com/~ming/up/capture.c - capture format 640*480 and results in High Bandwidth mode on the uvc device: Z-Star 0x0ac8/0x3450 - on T410(x86) laptop, also use guvcview to watch video capture/playback 1.3 about test2 and test4 - both two devices involved are tested concurrently by above test items 1.4 how to compute irq time(the time consumed by ehci_irq) - use trace points of irq:irq_handler_entry and irq:irq_handler_exit 1.5 kernel 3.10.0-rc3-next-20130528 1.6 test machines Pandaboard A1: ARM CortexA9 dural core Arndale board: ARM CortexA15 dural core T410: i5 CPU 2.67GHz quad core 2 test result 2.1 test case1: single mass storage device performance test -------------------------------------------------------------------- upstream | patched perf(MB/s)+irq time(us) | perf(MB/s)+irq time(us) -------------------------------------------------------------------- Pandaboard A1: 25.280(avg:145,max:772) | 25.540(avg:14, max:75) Arndale board: 29.700(avg:33, max:129) | 29.700(avg:10, max:50) T410: 34.430(avg:17, max:154*)| 34.660(avg:12, max:155) --------------------------------------------------------------------- 2.2 test case2: two mass storage devices' performance test -------------------------------------------------------------------- upstream | patched perf(MB/s)+irq time(us) | perf(MB/s)+irq time(us) -------------------------------------------------------------------- Pandaboard A1: 15.840/15.580(avg:158,max:1216) | 16.500/16.160(avg:15,max:139) Arndale board: 17.370/16.220(avg:33 max:234) | 17.480/16.200(avg:11, max:91) T410: 21.180/19.820(avg:18 max:160) | 21.220/19.880(avg:11, max:149) --------------------------------------------------------------------- 2.3 test case3: one uvc streaming test - uvc device works well(on x86, luvcview can be used too and has same result with uvc capture) -------------------------------------------------------------------- upstream | patched irq time(us) | irq time(us) -------------------------------------------------------------------- Pandaboard A1: (avg:445, max:873) | (avg:33, max:44) Arndale board: (avg:316, max:630) | (avg:20, max:27) T410: (avg:39, max:107) | (avg:10, max:65) --------------------------------------------------------------------- 2.4 test case4: one uvc streaming plus one mass storage device test -------------------------------------------------------------------- upstream | patched perf(MB/s)+irq time(us) | perf(MB/s)+irq time(us) -------------------------------------------------------------------- Pandaboard A1: 20.340(avg:259,max:1704)| 20.390(avg:24, max:101) Arndale board: 23.460(avg:124,max:726) | 23.370(avg:15, max:52) T410: 28.520(avg:27, max:169) | 28.630(avg:13, max:160) --------------------------------------------------------------------- 2.5 test case5: read single mass storage device with small transfer - run below command 10 times and compute the average speed dd if=/dev/sdN iflag=direct of=/dev/null bs=4K count=4000 1), test device A: -------------------------------------------------------------------- upstream | patched perf(MB/s)+irq time(us) | perf(MB/s)+irq time(us) -------------------------------------------------------------------- Pandaboard A1: 6.5(avg:21, max:64) | 6.5(avg:10, max:24) Arndale board: 8.13(avg:12, max:23) | 8.06(avg:7, max:17) T410: 6.66(avg:13, max:131) | 6.84(avg:11, max:149) --------------------------------------------------------------------- 2), test device B: -------------------------------------------------------------------- upstream | patched perf(MB/s)+irq time(us) | perf(MB/s)+irq time(us) -------------------------------------------------------------------- Pandaboard A1: 5.5(avg:21,max:43) | 5.49(avg:10, max:24) Arndale board: 5.9(avg:12, max:22) | 5.9(avg:7, max:17) T410: 5.48(avg:13, max:155) | 5.48(avg:7, max:140) --------------------------------------------------------------------- * On T410, sometimes read ehci status register in ehci_irq takes more than 100us, and the problem has been reported on the link: http://marc.info/?t=137065867300001&r=1&w=2 Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-01USB: host: use dev_get_platdata()Jingoo Han1-2/+2
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-17usb: host: ehci-tilegx: Remove redundant platform_set_drvdata()Sachin Kamat1-1/+0
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no driver is bound) removes the need to set driver data field to NULL. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-09usb: tilegx: fix memleak when create hcd failLibo Chen1-2/+5
When usb_create_hcd fail, we should call gxio_usb_host_destroy Signed-off-by: Libo Chen <libo.chen@huawei.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [extended to EHCI]
2012-07-19usb: add host support for the tilegx architectureChris Metcalf1-0/+214
This change adds OHCI and EHCI support for the tilegx's on-chip USB hardware. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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