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path: root/drivers/usb/chipidea/core.c
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2021-01-13usb: chipidea: tegra: Support host modePeter Geis
Add USB host mode to the Tegra HDRC driver. This allows us to benefit from support provided by the generic ChipIdea driver instead of duplicating the effort in a separate ehci-tegra driver. Tested-by: Matt Merhar <mattmerhar@protonmail.com> Tested-by: Nicolas Chauvet <kwizart@gmail.com> Tested-by: Ion Agorria <ion@agorria.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Peter Geis <pgwipeout@gmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201218120246.7759-6-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-29Merge tag 'usb-ci-v5.9-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: ENDIAN issue fix and one query controller role API is introduced. * tag 'usb-ci-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb: usb: chipidea: imx: get available runtime dr mode for wakeup setting usb: chipidea: add query_available_role interface Documentation: ABI: usb: chipidea: Update Li Jun's e-mail usb: chipidea: udc: fix the ENDIAN issue
2020-07-28usb: chipidea: add query_available_role interfacePeter Chen
The glue layer may need to know current available role to do some setting, eg, the wakeup setting. So we add ci_hdrc_query_available_role for that. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-07-20Merge 5.8-rc6 into usb-nextGreg Kroah-Hartman
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-09usb: chipidea: core: Document hw_port_test_set()'s missing 'ci' argumentLee Jones
Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/core.c:163: warning: Function parameter or member 'ci' not described in 'hw_port_test_set' Cc: Peter Chen <Peter.Chen@nxp.com> Cc: David Lopo <dlopo@chipidea.mips.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20200703174148.2749969-8-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-07usb: chipidea: core: add wakeup support for extconPeter Chen
If wakeup event occurred by extcon event, it needs to call ci_irq again since the first ci_irq calling at extcon notifier only wakes up controller, but do noop for event handling, it causes the extcon use case can't work well from low power mode. Cc: <stable@vger.kernel.org> Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Reported-by: Philippe Schenker <philippe.schenker@toradex.com> Tested-by: Philippe Schenker <philippe.schenker@toradex.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Link: https://lore.kernel.org/r/20200707060601.31907-2-peter.chen@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-06usb: chipidea: Enable user-space triggered role-switchingBryan O'Donoghue
The flag provided by the USB role-switch logic allow_userspace_control allows user-space to trigger a role-switch. Several other USB controller drivers already enable this feature. Let's switch it on for the chipidea core now also. Cc: Peter Chen <Peter.Chen@nxp.com> Cc: Jun Li <jun.li@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-05-06usb: chipidea: pull down dp for possible charger detection operationPeter Chen
The bootloader may use device mode, and keep dp up. We need dp to be pulled down before possbile charger detection operation. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-03-30usb: chipidea: core: show the real pointer value for registerPeter Chen
The pointer value is "ptrval" like below at current code: ci_hdrc ci_hdrc.0: ChipIdea HDRC found, revision: 25, lpm: 0; cap: (ptrval) op: (ptrval) According to Documentation/core-api/printk-formats.rst, we change it from %p to %px for real value. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-03-30usb: chipidea: core: refine the description for this driverPeter Chen
Some descriptions are outdated, update them. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-03-04usb: roles: Provide the switch drivers handle to the switch in the APIHeikki Krogerus
The USB role callback functions had a parameter pointing to the parent device (struct device) of the switch. The assumption was that the switch parent is always the controller. Firstly, that may not be true in every case, and secondly, it prevents us from supporting devices that supply multiple muxes. Changing the first parameter of usb_role_switch_set_t and usb_role_switch_get_t from struct device to struct usb_role_switch. Cc: Peter Chen <Peter.Chen@nxp.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: Chunfeng Yun <chunfeng.yun@mediatek.com> Cc: Bin Liu <b-liu@ti.com> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20200302135353.56659-6-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22usb: chipidea: handle single role for usb role classJun Li
If usb port is configed to be single role, but usb role class is trying to set unavailable role, don't try to do role change. Signed-off-by: Jun Li <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Link: https://lore.kernel.org/r/20200122014639.22667-2-peter.chen@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-18usb: chipidea: core: change vbus-regulator as optionalPeter Chen
Vbus regualtor is an optional regulator, for platforms, which doesn't have this regulator, it will get a dummy regulator and show warning message. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2019-08-28usb: chipidea: add role switch class supportLi Jun
USB role is fully controlled by usb role switch consumer(e.g. typec), usb port can be at host mode(USB_ROLE_HOST), device mode connected to host(USB_ROLE_DEVICE), or not connecting any partner(USB_ROLE_NONE). Signed-off-by: Li Jun <jun.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2019-08-09USB: chipidea: convert platform driver to use dev_groupsGreg Kroah-Hartman
Platform drivers now have the option to have the platform core create and remove any needed sysfs attribute files. So take advantage of that and do not register "by hand" any sysfs files. Cc: Peter Chen <Peter.Chen@nxp.com> Link: https://lore.kernel.org/r/20190805193636.25560-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-30usb: Remove dev_err() usage after platform_get_irq()Stephen Boyd
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-47-swboyd@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-14usb: chipidea: Use dev_err() instead of pr_err()Fabio Estevam
dev_err() is more appropriate for printing error messages inside drivers, so switch to dev_err(). While at it also add the missing newlines. Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2019-02-27usb: chipidea: Refactor USB PHY selection and keep a single PHYPaul Kocialkowski
Refactor the code in charge of looking up the USB PHY when no platdata is provided. Attempt to get a generic USB PHY first, then look for a legacy USB PHY through device-tree and finally get any registered PHY with the correct type. This way, only a single USB PHY is obtained and the flow is easier to understand and follow. All error pointers (except for EPROBE_DEFER) are considered as PHY not found. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-27usb: chipidea: Grab the (legacy) USB PHY by phandle firstPaul Kocialkowski
According to the chipidea driver bindings, the USB PHY is specified via the "phys" phandle node. However, this only takes effect for USB PHYs that use the common PHY framework. For legacy USB PHYs, a simple lookup based on the USB PHY type is done instead. This does not play out well when more than one USB PHY is registered, since the first registered PHY matching the type will always be returned regardless of what the driver was bound to. Fix this by looking up the PHY based on the "phys" phandle node. Although generic PHYs are rather matched by their "phys-name" and not the "phys" phandle directly, there is no helper for similar lookup on legacy PHYs and it's probably not worth the effort to add it. When no legacy USB PHY is found by phandle, fallback to grabbing any registered USB2 PHY. This ensures backward compatibility if some users were actually relying on this mechanism. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-20usb: chipidea: Add dynamic pinctrl selectionLoic Poulain
Some hardware implementations require to configure pins differently according to the USB role (host/device), this can be an update of the pins routing or a simple GPIO value change. This patch introduces new optional "host" and "device" pinctrls. If these pinctrls are defined by the device, they are respectively selected on host/device role start. If a default pinctrl exist, it is restored on host/device role stop. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2018-05-31USB: chipidea: no need to check return value of debugfs_create functionsGreg Kroah-Hartman
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-24USB: move many drivers to use DEVICE_ATTR_RWGreg Kroah-Hartman
Instead of "open coding" a DEVICE_ATTR() define, use the DEVICE_ATTR_RW() macro instead, which does everything properly instead. This does require a few static functions to be renamed to work properly, but thanks to a script from Joe Perches, this was easily done. Reported-by: Joe Perches <joe@perches.com> Cc: Matthieu CASTET <castet.matthieu@free.fr> Cc: Stanislaw Gruszka <stf_xl@wp.pl> Cc: Peter Chen <Peter.Chen@nxp.com> Cc: Mathias Nyman <mathias.nyman@intel.com> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-07USB: chipidea: Remove redundant license textGreg Kroah-Hartman
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. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04USB: add SPDX identifiers to all remaining files in drivers/usb/Greg Kroah-Hartman
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>
2017-08-28Merge tag 'usb-ci-v4.14-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: Chipidea changes for v4.14-rc1 - Add chipidea support at Nvidia SoCs - Improvement for extcon support - Some code refines
2017-08-10usb: chipidea: constify attribute_group structures.Arvind Yadav
attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-25usb: chipidea: core: do not register extcon notifier if extcon device is not ↵Peter Chen
existed This issue is detected when the system has another device driver which registers USB connector extcon device, fix it by adding extcon device check. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-06-27Merge tag 'usb-ci-v4.13-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: One patch to improve error handling at chipidea core
2017-05-23usb: chipidea: core: check before accessing ci_role in ci_role_showMichael Thalmeier
ci_role BUGs when the role is >= CI_ROLE_END. This is the case while the role is changing. Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-05-18usb: chipidea: properly handle host or gadget initialization failureJisheng Zhang
If ci_hdrc_host_init() or ci_hdrc_gadget_init() returns error and the error != -ENXIO, as Peter pointed out, "it stands for initialization for host or gadget has failed", so we'd better return failure rather continue. And before destroying the otg, i.e ci_hdrc_otg_destroy(ci), we should also check ci->roles[CI_ROLE_GADGET]. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-04-18Merge tag 'usb-ci-v4.12-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: Two changes for this v4.12-rc1: - Add sysfs entry for role switch - Update gadget state after gadget back from suspend
2017-04-14usb: chipidea: core: add sysfs groupPeter Chen
Sometimes, the user needs to adjust some properties for controllers, eg the role for controller, we add sysfs group for them. The attribute 'role' is used to switch host/gadget role dynamically, the uewr can read the current role, and write the other role compare to current one to finish the switch. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-03-23usb: chipidea: use bus->sysdev for DMA configurationArnd Bergmann
Set the dma for chipidea from sysdev. This is inherited from its parent node. Also, do not set dma mask for child as it is not required now. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sriram Dash <sriram.dash@nxp.com> Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-03usb: chipidea: Configure phy for appropriate modeStephen Boyd
When the qcom chipidea controller is used with an extcon, we need to signal device mode or host mode to the phy so it can configure itself for the correct mode. This should be done after the phy is powered up, so that the register writes work correctly. Add in the appropriate phy_set_mode() call here. Cc: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-23usb: chipidea: delete an useless header includeJisheng Zhang
<linux/phy.h> is for net phy drivers, we don't need it. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: msm: Handle phy power statesStephen Boyd
The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Hook the phy initialization into the RESET event and the phy power off into the STOPPED event. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Consolidate extcon notifiersStephen Boyd
The two extcon notifiers are almost the same except for the variable name for the cable structure and the id notifier inverts the cable->state logic. Make it the same and replace two functions with one to save some lines. This also makes it so that the id cable state is true when the id pin is pulled low, so we change the name of ->state to ->connected to properly reflect that we're interested in the cable being connected. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Ivan T. Ivanov" <iivanov.xz@gmail.com> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Add support for ULPI PHY busStephen Boyd
Some phys for the chipidea controller are controlled via the ULPI viewport. Add support for the ULPI bus so that these sorts of phys can be probed and read/written automatically without having to duplicate the viewport logic in each phy driver. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Add platform flag for wrapper phy managementStephen Boyd
The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Therefore, add a flag to skip any phy power management in the core layer, leaving it up to the glue driver to manage. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipidea: Only read/write OTGSC from one placeStephen Boyd
With the id and vbus detection done via extcon we need to make sure we poll the status of OTGSC properly by considering what the extcon is saying, and not just what the register is saying. Let's move this hw_wait_reg() function to the only place it's used and simplify it for polling the OTGSC register. Then we can make certain we only use the hw_read_otgsc() API to read OTGSC, which will make sure we properly handle extcon events. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Ivan T. Ivanov" <iivanov.xz@gmail.com> Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-01-20usb: chipdata: Replace the extcon APIChanwoo Choi
This patch uses the resource-managed extcon API for extcon_register_notifier() and replaces the deprecated extcon API as following: - extcon_get_cable_state_() -> extcon_get_state() Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2016-11-15usb: chipidea: move the lock initialization to core filePeter Chen
This can fix below dump when the lock is accessed at host mode due to it is not initialized. [ 46.119638] INFO: trying to register non-static key. [ 46.124643] the code is fine but needs lockdep annotation. [ 46.130144] turning off the locking correctness validator. [ 46.135659] CPU: 0 PID: 690 Comm: cat Not tainted 4.9.0-rc3-00079-g4b75f1d #1210 [ 46.143075] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 46.148923] Backtrace: [ 46.151448] [<c010c460>] (dump_backtrace) from [<c010c658>] (show_stack+0x18/0x1c) [ 46.159038] r7:edf52000 [ 46.161412] r6:60000193 [ 46.163967] r5:00000000 [ 46.165035] r4:c0e25c2c [ 46.169109] [<c010c640>] (show_stack) from [<c03f58a4>] (dump_stack+0xb4/0xe8) [ 46.176362] [<c03f57f0>] (dump_stack) from [<c016d690>] (register_lock_class+0x4fc/0x56c) [ 46.184554] r10:c0e25d24 [ 46.187014] r9:edf53e70 [ 46.189569] r8:c1642444 [ 46.190637] r7:ee9da024 [ 46.193191] r6:00000000 [ 46.194258] r5:00000000 [ 46.196812] r4:00000000 [ 46.199185] r3:00000001 [ 46.203259] [<c016d194>] (register_lock_class) from [<c0171294>] (__lock_acquire+0x80/0x10f0) [ 46.211797] r10:c0e25d24 [ 46.214257] r9:edf53e70 [ 46.216813] r8:ee9da024 [ 46.217880] r7:c1642444 [ 46.220435] r6:edcd1800 [ 46.221502] r5:60000193 [ 46.224057] r4:00000000 [ 46.227953] [<c0171214>] (__lock_acquire) from [<c01726c0>] (lock_acquire+0x74/0x94) [ 46.235710] r10:00000001 [ 46.238169] r9:edf53e70 [ 46.240723] r8:edf53f80 [ 46.241790] r7:00000001 [ 46.244344] r6:00000001 [ 46.245412] r5:60000193 [ 46.247966] r4:00000000 [ 46.251866] [<c017264c>] (lock_acquire) from [<c096c8fc>] (_raw_spin_lock_irqsave+0x40/0x54) [ 46.260319] r7:ee1c6a00 [ 46.262691] r6:c062a570 [ 46.265247] r5:20000113 [ 46.266314] r4:ee9da014 [ 46.270393] [<c096c8bc>] (_raw_spin_lock_irqsave) from [<c062a570>] (ci_port_test_show+0x2c/0x70) [ 46.279280] r6:eebd2000 [ 46.281652] r5:ee9da010 [ 46.284207] r4:ee9da014 [ 46.286810] [<c062a544>] (ci_port_test_show) from [<c0248d04>] (seq_read+0x1ac/0x4f8) [ 46.294655] r9:edf53e70 [ 46.297028] r8:edf53f80 [ 46.299583] r7:ee1c6a00 [ 46.300650] r6:00000001 [ 46.303205] r5:00000000 [ 46.304273] r4:eebd2000 [ 46.306850] [<c0248b58>] (seq_read) from [<c039e864>] (full_proxy_read+0x54/0x6c) [ 46.314348] r10:00000000 [ 46.316808] r9:c0a6ad30 [ 46.319363] r8:edf53f80 [ 46.320430] r7:00020000 [ 46.322986] r6:b6de3000 [ 46.324053] r5:ee1c6a00 [ 46.326607] r4:c0248b58 [ 46.330505] [<c039e810>] (full_proxy_read) from [<c021ec98>] (__vfs_read+0x34/0x118) [ 46.338262] r9:edf52000 [ 46.340635] r8:c0107fc4 [ 46.343190] r7:00020000 [ 46.344257] r6:edf53f80 [ 46.346812] r5:c039e810 [ 46.347879] r4:ee1c6a00 [ 46.350447] [<c021ec64>] (__vfs_read) from [<c021fbd0>] (vfs_read+0x8c/0x11c) [ 46.357597] r9:edf52000 [ 46.359969] r8:c0107fc4 [ 46.362524] r7:edf53f80 [ 46.363592] r6:b6de3000 [ 46.366147] r5:ee1c6a00 [ 46.367214] r4:00020000 [ 46.369782] [<c021fb44>] (vfs_read) from [<c0220a4c>] (SyS_read+0x4c/0xa8) [ 46.376672] r8:c0107fc4 [ 46.379045] r7:00020000 [ 46.381600] r6:b6de3000 [ 46.382667] r5:ee1c6a00 [ 46.385222] r4:ee1c6a00 [ 46.387817] [<c0220a00>] (SyS_read) from [<c0107e20>] (ret_fast_syscall+0x0/0x1c) [ 46.395314] r7:00000003 [ 46.397687] r6:b6de3000 [ 46.400243] r5:00020000 [ 46.401310] r4:00020000 Cc: <stable@vger.kernel.org> Fixes: 26c696c678c4 ("USB: Chipidea: rename struct ci13xxx variables from udc to ci") Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-29usb: chipidea: add system interface for ttctrl.tthaPeter Chen
In chipidea IP RTL, there is a very limited design for siTD, the detail like below: There is no Max Packet Size at siTD, so it uses one constant for both Max Packet Size for packet and the packet size for the last transaction when considering schedule. If the ttctrl.ttha does not match against Hub Address field in siTD, this constant is 188 bytes, else this constant is 1023 bytes. If the ttctrl.ttha is non-zero value, RTL will use 188 as this constant, so it will lose the data if the packet size is larger than 188 bytes, eg, if we playback a wav which format is 48khz, 16 bits, 2 channels, the packet size will be 192bytes, but the controller will only send 188 bytes for this packet, the noise will be heared using USB audio card. The use case is single transaction, but higher frame rate. If the ttctr.ttha is zero value, we can send 1023 bytes within one transaction, but the controller will not accept the coming tranaction if it considers the schedule time is less than 1023 bytes. So the limitation is we can't schedule as many as transactions within frame. If the total bytes is already 256 bytes for previous transactions within frame, it can't accept another transaction. The use case is multiple transactions, but less frame rate. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2015-12-24usb: chipidea: removing of_find_propertySaurabh Sengar
call to of_find_property() before of_property_read_u32() is unnecessary. of_property_read_u32() anyway calls to of_find_property() only. Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com> Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-12-24usb: chipidea: clean up CONFIG_USB_CHIPIDEA_DEBUG referencePeter Chen
Since this configuration option has deleted, cleans up all its references. Signed-off-by: Peter Chen <peter.chen@freescale.com> Reported-by: Valentin Rothberg <valentinrothberg@gmail.com>
2015-12-24usb: chipidea: support debugfs without CONFIG_USB_CHIPIDEA_DEBUGPeter Chen
Since we need to mount debugfs to show/store the things we want to debug, it is duplicated to add another configuration to enable it. Meanwhile, with CONFIG_USB_CHIPIDEA_DEBUG, we can't support chipidea debugfs at runtime. Signed-off-by: Peter Chen <peter.chen@freescale.com> Cc: Jun Li <jun.li@freescale.com>
2015-10-22Merge tag 'usb-ci-v4.4-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: USB Chipidea updates for v4.4-rc1 - Use extcon framework for VBUS and ID detect - Add imx6sx and imx7d support - Other small changes
2015-10-22usb: chipidea: Add support for 'phy-clkgate-delay-us' propertyFabio Estevam
Add support for the optional 'phy-clkgate-delay-us' property that is used to describe the delay time between putting PHY into low power mode and turning off the PHY clock. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-10-22usb: chipidea: Use extcon framework for VBUS and ID detectIvan T. Ivanov
On recent Qualcomm platforms VBUS and ID lines are not routed to USB PHY LINK controller. Use extcon framework to receive connect and disconnect ID and VBUS notification. Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org> Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-09-27usb: common: of_usb_get_dr_mode to usb_get_dr_modeHeikki Krogerus
By using the unified device property interface, the function can be made available for all platforms and not just the ones using DT. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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