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path: root/drivers/usb/chipidea
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2015-12-09usb: chipidea: otg: gadget module load and unload supportLi Jun
commit 85da852df66e5e0d3aba761b0fece7c958ff0685 upstream. This patch is to support load and unload gadget driver in full OTG mode. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Tested-by: Jiada Wang <jiada_wang@mentor.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-22usb: chipidea: udc: using the correct stall implementationPeter Chen
commit 56ffa1d154c7e12af16273f0cdc42690dd05caf5 upstream. According to spec, there are functional and protocol stalls. For functional stall, it is for bulk and interrupt endpoints, below are cases for it: - Host sends SET_FEATURE request for Set-Halt, the udc driver needs to set stall, and return true unconditionally. - The gadget driver may call usb_ep_set_halt to stall certain endpoints, if there is a transfer in pending, the udc driver should not set stall, and return -EAGAIN accordingly. These two kinds of stall need to be cleared by host using CLEAR_FEATURE request (Clear-Halt). For protocol stall, it is for control endpoint, this stall will be set if the control request has failed. This stall will be cleared by next setup request (hardware will do it). It fixed usbtest (drivers/usb/misc/usbtest.c) Test 13 "set/clear halt" test failure, meanwhile, this change has been verified by USB2 CV Compliance Test and MSC Tests. Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-22usb: chipidea: imx: fix a typo for imx6sxLi Jun
commit 8315b77d72c5f0b18ceb513303d845e73166133c upstream. Use imx6sx instead of imx6sl's platform flags for imx6sx. Fixes: e14db48dfcf3 ("usb: chipidea: imx: add runtime power management support") Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-16usb: chipidea: ehci_init_driver is intended to call one timePeter Chen
commit 2f01a33bd26545c16fea7592697f7f15c416402b upstream. The ehci_init_driver is used to initialize hcd APIs for each ehci controller driver, it is designed to be called only one time and before driver register is called. The current design will cause ehci_init_driver is called multiple times at probe process, it will cause hc_driver's initialization affect current running hcd. We run out NULL pointer dereference problem when one hcd is started by module_init, and the other is started by otg thread at SMP platform. The reason for this problem is ehci_init_driver will do memory copy for current uniform hc_driver, and this memory copy will do memset (as 0) first, so when the first hcd is running usb_add_hcd, and the second hcd may clear the uniform hc_driver's space (at ehci_init_driver), then the first hcd will meet NULL pointer at the same time. See below two logs: LOG_1: ci_hdrc ci_hdrc.0: EHCI Host Controller ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1 ci_hdrc ci_hdrc.1: doesn't support gadget Unable to handle kernel NULL pointer dereference at virtual address 00000014 pgd = 80004000 [00000014] *pgd=00000000 Internal error: Oops: 805 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 108 Comm: kworker/u8:2 Not tainted 3.14.38-222193-g24b2734-dirty #25 Workqueue: ci_otg ci_otg_work task: d839ec00 ti: d8400000 task.ti: d8400000 PC is at ehci_run+0x4c/0x284 LR is at _raw_spin_unlock_irqrestore+0x28/0x54 pc : [<8041f9a0>] lr : [<8070ea84>] psr: 60000113 sp : d8401e30 ip : 00000000 fp : d8004400 r10: 00000001 r9 : 00000001 r8 : 00000000 r7 : 00000000 r6 : d8419940 r5 : 80dd24c0 r4 : d8419800 r3 : 8001d060 r2 : 00000000 r1 : 00000001 r0 : 00000000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 10c53c7d Table: 1000404a DAC: 00000015 Process kworker/u8:2 (pid: 108, stack limit = 0xd8400238) Stack: (0xd8401e30 to 0xd8402000) 1e20: d87523c0 d8401e48 66667562 d8419800 1e40: 00000000 00000000 d8419800 00000000 00000000 00000000 d84198b0 8040fcdc 1e60: 00000000 80dd320c d8477610 d8419c00 d803d010 d8419800 00000000 00000000 1e80: d8004400 00000000 d8400008 80431494 80431374 d803d100 d803d010 d803d1ac 1ea0: 00000000 80432428 804323d4 d803d100 00000001 80435eb8 80e0d0bc d803d100 1ec0: 00000006 80436458 00000000 d803d100 80e92ec8 80436f44 d803d010 d803d100 1ee0: d83fde00 8043292c d8752710 d803d1f4 d803d010 8042ddfc 8042ddb8 d83f3b00 1f00: d803d1f4 80042b60 00000000 00000003 00000001 00000001 80054598 d83f3b00 1f20: d8004400 d83f3b18 d8004414 d8400000 80e3957b 00000089 d8004400 80043814 1f40: d839ec00 00000000 d83fcd80 d83f3b00 800436e4 00000000 00000000 00000000 1f60: 00000000 80048f34 00000000 00000000 00000000 d83f3b00 00000000 00000000 1f80: d8401f80 d8401f80 00000000 00000000 d8401f90 d8401f90 d8401fac d83fcd80 1fa0: 80048e68 00000000 00000000 8000e538 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [<8041f9a0>] (ehci_run) from [<8040fcdc>] (usb_add_hcd+0x248/0x6e8) [<8040fcdc>] (usb_add_hcd) from [<80431494>] (host_start+0x120/0x2e4) [<80431494>] (host_start) from [<80432428>] (ci_otg_start_host+0x54/0xbc) [<80432428>] (ci_otg_start_host) from [<80435eb8>] (otg_set_protocol+0xa4/0xd0) [<80435eb8>] (otg_set_protocol) from [<80436458>] (otg_set_state+0x574/0xc58) [<80436458>] (otg_set_state) from [<80436f44>] (otg_statemachine+0x408/0x46c) [<80436f44>] (otg_statemachine) from [<8043292c>] (ci_otg_fsm_work+0x3c/0x190) [<8043292c>] (ci_otg_fsm_work) from [<8042ddfc>] (ci_otg_work+0x44/0x1c4) [<8042ddfc>] (ci_otg_work) from [<80042b60>] (process_one_work+0xf4/0x35c) [<80042b60>] (process_one_work) from [<80043814>] (worker_thread+0x130/0x3bc) [<80043814>] (worker_thread) from [<80048f34>] (kthread+0xcc/0xe4) [<80048f34>] (kthread) from [<8000e538>] (ret_from_fork+0x14/0x3c) Code: e5953018 e3530000 0a000000 e12fff33 (e5878014) LOG_2: ci_hdrc ci_hdrc.0: EHCI Host Controller ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1 ci_hdrc ci_hdrc.1: doesn't support gadget Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = 80004000 [00000000] *pgd=00000000 In Online 00:00ternal e Offline rror: Oops: 80000005 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 108 Comm: kworker/u8:2 Not tainted 3.14.38-02007-g24b2734-dirty #127 Workque Online 00:00ue: ci_o Offline tg ci_otg_work Online 00:00task: d8 Offline 39ec00 ti: d83ea000 task.ti: d83ea000 PC is at 0x0 LR is at usb_add_hcd+0x248/0x6e8 pc : [<00000000>] lr : [<8040f644>] psr: 60000113 sp : d83ebe60 ip : 00000000 fp : d8004400 r10: 00000001 r9 : 00000001 r8 : d85fd4b0 r7 : 00000000 r6 : 00000000 r5 : 00000000 r4 : d85fd400 r3 : 00000000 r2 : d85fd4f4 r1 : 80410178 r0 : d85fd400 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 10c53c7d Table: 1000404a DAC: 00000015 Process kworker/u8:2 (pid: 108, stack limit = 0xd83ea238) Stack: (0xd83ebe60 to 0xd83ec000) be60: 00000000 80dd920c d8654e10 d85fd800 d803e010 d85fd400 00000000 00000000 be80: d8004400 00000000 d83ea008 80430e34 80430d14 d803e100 d803e010 d803e1ac bea0: 00000000 80431dc8 80431d74 d803e100 00000001 80435858 80e130bc d803e100 bec0: 00000006 80435df8 00000000 d803e100 80e98ec8 804368e4 d803e010 d803e100 bee0: d86e8100 804322cc d86cf050 d803e1f4 d803e010 8042d79c 8042d758 d83cf900 bf00: d803e1f4 80042b78 00000000 00000003 00000001 00000001 800545e8 d83cf900 bf20: d8004400 d83cf918 d8004414 d83ea000 80e3f57b 00000089 d8004400 8004382c bf40: d839ec00 00000000 d8393780 d83cf900 800436fc 00000000 00000000 00000000 bf60: 00000000 80048f50 80e019f4 00000000 0000264c d83cf900 00000000 00000000 bf80: d83ebf80 d83ebf80 00000000 00000000 d83ebf90 d83ebf90 d83ebfac d8393780 bfa0: 80048e84 00000000 00000000 8000e538 00000000 00000000 00000000 00000000 bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 ee66e85d 133ebd03 [<804 Online 00:000f644>] Offline (usb_add_hcd) from [<80430e34>] (host_start+0x120/0x2e4) [<80430e34>] (host_start) from [<80431dc8>] (ci_otg_start_host+0x54/0xbc) [<80431dc8>] (ci_otg_start_host) from [<80435858>] (otg_set_protocol+0xa4/0xd0) [<80435858>] (otg_set_protocol) from [<80435df8>] (otg_set_state+0x574/0xc58) [<80435df8>] (otg_set_state) from [<804368e4>] (otg_statemachine+0x408/0x46c) [<804368e4>] (otg_statemachine) from [<804322cc>] (ci_otg_fsm_work+0x3c/0x190) [<804322cc>] (ci_otg_fsm_work) from [<8042d79c>] (ci_otg_work+0x44/0x1c4) [<8042d79c>] (ci_otg_work) from [<80042b78>] (process_one_work+0xf4/0x35c) [<80042b78>] (process_one_work) from [<8004382c>] (worker_thread+0x130/0x3bc) [<8004382c>] (worker_thread) from [<80048f50>] (kthread+0xcc/0xe4) [<80048f50>] (kthread) from [<8000e538>] (ret_from_fork+0x14/0x3c) Code: bad PC value Cc: Jun Li <jun.li@freescale.com> Cc: Alan Stern <stern@rowland.harvard.edu> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-06usb: chipidea: debug: avoid out of bound readHeinrich Schuchardt
A string written by the user may not be zero terminated. sscanf may read memory beyond the buffer if no zero byte is found. For testing build with CONFIG_USB_CHIPIDEA=y, CONFIG_USB_CHIPIDEA_DEBUG=y. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-04-28usb: chipidea: otg: remove mutex unlock and lock while stop and start roleLi Jun
Wrongly release mutex lock during otg_statemachine may result in re-enter otg_statemachine, which is not allowed, we should do next state transtition after previous one completed. Fixes: 826cfe751f3e ("usb: chipidea: add OTG fsm operation functions implementation") Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-08usb: chipidea: debug: add low power mode check before print registersLi Jun
Since the required clock to access registers is gated off in low power mode, add ci->in_lpm check before try to dump registers value. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-04-08usb: chipidea: udc: bypass pullup DP when gadget connect in OTG fsm modeLi Jun
By pass pullup DP in OTG fsm mode when do gadget connect, to let it handled by OTG state machine. This patch can fix the problem you found with my HNP polling patchset after below 3 patches introduced: 467a78c usb: chipidea: udc: apply new usb_udc_vbus_handler interface 628ef0d usb: udc: add usb_udc_vbus_handler dfea9c9 usb: udc: store usb_udc pointer in struct usb_gadget Problem: - Connect USB cable and MicroAB cable between two boards - Boot up two boards - load g_mass_storage at B-device side, the enumeration will success, and A will see a usb mass-storage device - load g_mass_storage at A-device side, the problem has occurred, the connection will be lost at the beginning, then connect again. This patch is based on commit eff933c1d3a2e046492b3dfc86db813856553a29 (chipidea: pci: make it depends on NOP_USB_XCEIV) on branch peter-usb-dev of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-03-26chipidea: pci: make it depends on NOP_USB_XCEIVAndy Shevchenko
After commit ba1aff67f99a (chipidea: pci: register nop PHY) the PCI glue driver requires nop-PHY to be selected. Thus, make it an explicit dependency. Reported-by: kbuild test robot <fengguang.wu@intel.com> Fixes: ba1aff67f99a (chipidea: pci: register nop PHY) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26chipidea: introduce specific Kconfig options for glue driversAndy Shevchenko
This patch introduces USB_CHIPIDEA_PCI and USB_CHIPIDEA_OF Kconfig options, one per each specific glue driver. This is needed to provide different dependencies they have. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26usb: chipidea: use hrtimer for otg fsm timersLi Jun
Current otg fsm timers are using controller 1ms irq and count it, this patch is to replace it with hrtimer solution, use one hrtimer for all otg timers. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26usb: otg-fsm: move 2 otg fsm timers definition to otg_fsm_timerLi Jun
B_DATA_PLS(data-line pulse time) and B_SSEND_SRP(session end to SRP init) are also from OTG&EH 2.0 Specification and they are not chipidea specific. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26usb: chipidea: otg: remove unnecessary B_SESS_VLD timerLi Jun
Since BSV irq is enabled for B-device all the time, so B_SESS_VLD timer is not required, and also no need to check BSV status when B_ASE0_BRST timer timeout. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26usb: chipidea: usbmisc_imx: fix returnvar.cocci warningskbuild test robot
drivers/usb/chipidea/usbmisc_imx.c:277:5-8: Unneeded variable: "ret". Return "0" on line 297 Removes unneeded variable used to store return value. Generated by: scripts/coccinelle/misc/returnvar.cocci Cc: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-24Merge tag 'usb-for-v4.1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: patches for v4.1 merge window As usual, a big pile of commits. This time a total of 111 non-merge commits. Other than the usual set of cleanups and non-critical fixes, we have some interesting work for AM335x's MUSB babble recovery. Now that takes a lot less time and we don't have to Reset MUSB all the time. The printer gadget has been converted to configfs interface and the atmel udc has learned suspend/resume with wakeup. Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-23Merge 4.0-rc5 into usb-nextGreg Kroah-Hartman
We want the USB fixes in here as well to resolve merge conflicts. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-19usb: chipidea: udc: apply new usb_udc_vbus_handler interfacePeter Chen
It can move all pullup/pulldown operation control to udc-core through usb_gadget_connect/usb_gadget_disconnect according to vbus status. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-18usb: chipidea: support runtime power management for otg fsm modeLi Jun
This patch adds runtime power management support for otg fsm mode, since A-device in a_idle state cannot detect data pulse irq after suspended, here enable wakeup by connection before suspend to make it can be resumed by DP; and handle wakeup from that state like SRP. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: host: turn on vbus before add hcd if early vbus on is requiredLi Jun
If CI_HDRC_TURN_VBUS_EARLY_ON is set, turn on vbus before adding hcd, so it will not set reg_vbus of ehci_ci_priv, then vbus will not be handled by ehci core. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: add a flag for turn on vbus early for hostLi Jun
Some usb PHYs need power supply from vbus to make it work, eg mxs-phy, if there is no vbus, USB PHY will not in correct state when the controller starts to work, for host, this requires vbus should be turned on before setting port power(PP) of ehci, to work with this kind of USB PHY design, this patch adds a flag CI_HDRC_TURN_VBUS_EARLY_ON, can be checked by host driver to turn on vbus while start host. Signed-off-by: Li Jun <jun.li@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18chipidea: pci: register nop PHYAndy Shevchenko
Since PHY for ChipIdea is optional (not all SoCs having PHY for ChipIdea should be programmed), we register 'nop' PHY for platforms that do not have programmable PHY. Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: host: add .bus_suspend quirkPeter Chen
For chipidea, its resume sequence is not-EHCI compatible, see below description for FPR at portsc. So in order to send SoF in time for remote wakeup sequence(within 3ms), the RUN/STOP bit must be set before the resume signal is ended, but the usb resume code may run after resume signal is ended, so we had to set it at suspend path. Force Port Resume - RW. Default = 0b. 1= Resume detected/driven on port. 0=No resume (K-state) detected/driven on port. Host mode: Software sets this bit to one to drive resume signaling. The Controller sets this bit to '1' if a J-to-K transition is detected while the port is in the Suspend state. When this bit transitions to a '1' because a J-to-K transition is detected, the Port Change Detect bit in the USBSTS register is also set to '1'. This bit will automatically change to '0' after the resume sequence is complete. This behavior is different from EHCI where the controller driver is required to set this bit to a '0' after the resume duration is timed in the driver. Note that when the controller owns the port, the resume sequence follows the defined sequence documented in the USB Specification Revision 2.0. The resume signaling (Full-speed 'K') is driven on the port as long as this bit remains a '1'. This bit will remain a '1' until the port has switched to idle. Writing a '0' has no affect because the port controller will time the resume operation, clear the bit and the port control state switches to HS or FS idle. This field is '0' if Port Power(PP) is '0' in host mode. This bit is not-EHCI compatible. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18Chipidea: Set connect-at-fullspeed bit when entering host mode if ↵Daniel Tang
CI_HDRC_FORCE_FULLSPEED is set in the platform data PORTSC_PFSC is not set on entering host mode which means the USB OTG controller will attempt to enumerate USB devices at high speed even when the CI_HDRC_FORCE_FULLSPEED flag is set in the platform data. This patch ensures it is set right before host mode operations begin if needed. Signed-off-by: Daniel Tang <dt.tangr@gmail.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18Chipidea: TI-NSPIRE USB OTG hardware does not support high speed and must ↵Daniel Tang
connect at full speed Signed-off-by: Daniel Tang <dt.tangr@gmail.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: Add errata for revision 2.40aSanchayan Maity
At chipidea revision 2.40a, there is a below errata: 9000531823 B2-Medium Adding a dTD to a Primed Endpoint May Not Get Recognized Title: Adding a dTD to a Primed Endpoint May Not Get Recognized Impacted Configuration: All device mode configurations. Description: There is an issue with the add dTD tripwire semaphore (ATDTW bit in USBCMD register) that can cause the controller to ignore a dTD that is added to a primed endpoint. When this happens, the software can read the tripwire bit and the status bit at '1' even though the endpoint is unprimed. After executing a dTD, the device controller endpoint state machine executes a final read of the dTD terminate bit to check if the application added a dTD to the linked list at the last moment. This read is done in the finpkt_read_latest_next_td (44) state. After the read is performed, if the terminate bit is still set, the state machine moves to unprime the endpoint. The decision to unprime the endpoint is done in the checkqh_decision (59) state, based on the value of the terminate bit. Before reaching the checkqh_decision state, the state machine traverses the writeqhtd_status (57), writeqh_status (56), and release_prime_mask (42) states. As shown in the waveform, the ep_addtd_tripwire_clr signal is not set to clear the tripwire bit in these states. Workaround: The software must implement a periodic poll cycle, and check for each dTD pending on execution (Active = 1), if the enpoint is primed. It can do this by reading the corresponding bits in the ENDPTPRIME and ENDPTSTAT registers. If these bits are read at 0, the software needs to re-prime the endpoint by writing 1 to the corresponding bit in the ENDPTPRIME register. This can be done for every microframe, every frame or with a larger interval, depending on the urgency of transfer execution for the application. Tested-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: add chipidea revision informationPeter Chen
Define ci_get_revision API to know the controller revision information according to chipidea 1.1a, 2.0a and 2.5a spec. Besides, add one entry at struct ci_hdrc to indicate revision information, it can be used for adding different code for revisions, eg kinds of errata. Reviewed-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: add identification registers access APIsPeter Chen
Using hw_write_id_reg and hw_read_id_reg to write and read identification registers contents, they can be used to get controller information, change some system configurations, and so on. Reviewed-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: usbmisc_imx: add imx6sx initialization routinePeter Chen
Except the same process with earlier imx6, it has below two features: - Choose which vbus voltage as vbus wakeup source We choose B_SESSION_VALID as vbus wakeup source since when the system goes to suspend, the vbus comparator can't compare the vbus voltage for VBUS_VALID. - Disable dp/dm (linestate) change as wakeup source at device mode when the vbus is not there, we don't expect dp/dm change waking up usb controller at this situation. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: clear otg interrupt status for otg capable controllerPeter Chen
We need to do it for all otg capable controller, not only peripheral featured otg capable controller, otherwise, the host-only role, but otg capable controller may be responded by otg interrupt. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: imx: add usb as system wakeup sourcePeter Chen
Enable USB as system wakeup source, and each platform needs to implement imx_usbmisc_set_wakeup in usbmisc_imx.c to support. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: add usb as system wakeup sourcePeter Chen
The USB signal can be system wakeup source, this patch add the support, for how to enable it, see Documentation/usb/chipidea.txt. Since USB wakeup enable logic is vendor/platform specific, the glue layer needs to implement it to support this feature. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: imx: add runtime power management supportPeter Chen
Add runtime pm support for imx, only imx6 series are supported and tested. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: usbmisc_imx: add .set_wakeup interfacePeter Chen
This API is used to enable/disable usb wakeup, only imx6 series are added, since I don't have other imx hardware on hand. Other imx users can add their API according to reference manual after testing. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: add runtime power management supportPeter Chen
Add runtime power management support. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: imx: simplify the usbmisc callersPeter Chen
Move struct imx_usbmisc_data NULL pointer judgement from caller to each API, it can simplify the caller. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: usbmisc_imx: delete clock informationPeter Chen
All imx usb controller's non core registers uses the same clock gate with core registers, the usbmisc_imx is the library for imx glue driver, the glue keeps clock on when it calls usbmisc_imx API to change non-core register. Besides, we will support runtime pm in the future, it also needs to close this clock when the usb is not in use. Philipp Zabel also verifies it at imx6q platform, see http://www.spinics.net/lists/linux-usb/msg118491.html Cc: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: imx: using common platform flag directlyPeter Chen
It is meaningless the glue layer driver has its own platform flag which is the same meaning with common platform flag. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18usb: chipidea: udc: return immediately if re-enable non-empty endpointPeter Chen
Some gadget driver (like uac1) will try to enable endpoint again even the ep is not empty, it will cause the ep reset again and may affect the dTD list which has already queued. It returns -EBUSY immediately, and indicate the endpoint is in use. In this way, the ep's behavior will not be affected, and the gadget driver is also notified. Cc: Xuebing Wang <xbing6@gmail.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-15usb: chipidea: otg: add a_alt_hnp_support response for B deviceLi Jun
This patch adds response to a_alt_hnp_support set feature request from legacy A device, that is, B-device can provide a message to the user indicating that the user needs to connect the B-device to an alternate port on the A-device. A device sets this feature indicates to the B-device that it is connected to an A-device port that is not capable of HNP, but that the A-device does have an alternate port that is capable of HNP. [Peter] Without this patch, the OTG B device can't be enumerated on non-HNP port at A device, see below log: [ 2.287464] usb 1-1: Dual-Role OTG device on non-HNP port [ 2.293105] usb 1-1: can't set HNP mode: -32 [ 2.417422] usb 1-1: new high-speed USB device number 4 using ci_hdrc [ 2.460635] usb 1-1: Dual-Role OTG device on non-HNP port [ 2.466424] usb 1-1: can't set HNP mode: -32 [ 2.587464] usb 1-1: new high-speed USB device number 5 using ci_hdrc [ 2.630649] usb 1-1: Dual-Role OTG device on non-HNP port [ 2.636436] usb 1-1: can't set HNP mode: -32 [ 2.641003] usb usb1-port1: unable to enumerate USB device Cc: stable <stable@vger.kernel.org> Acked-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Li Jun <b47624@freescale.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-04Merge tag 'usb-for-v3.20' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: patches for v3.20 merge window Here's the big pull request for Gadgets and PHYs. It's a total of 217 non-merge commits with pretty much everything being touched. The most important bits are a ton of new documentation for almost all usb gadget functions, a new isp1760 UDC driver, several improvements to the old net2280 UDC driver, and some minor tracepoint improvements to dwc3. Other than that, a big list of minor cleanups, smaller bugfixes and new features all over the place. Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-02-03ehci-pci: disable for Intel MID platforms (update)Andy Shevchenko
This is a follow up to the previously submitted commit cefa9a31a5f0 (ehci-pci: disable for Intel MID platforms). It includes the following changes: - table and function are renamed to reflect this is not only about ChipIdea - ChipIdea PCI driver (ci_hdrc_pci.c) gets the comment about the table in ehci-pci.c - MIPS IDs removed from the list since it was discovered and tested on Intel MID platforms Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-29usb: chipidea: udc: add set_selfpowered gaget opsPeter Chen
The gadget power property will be used at get_status request. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-09Revert "usb: chipidea: remove duplicate dev_set_drvdata for host_start"Peter Chen
This reverts commit 14b4099c074f2ddf4d84b22d370170e61b527529 It moved platform_set_drvdata(pdev, ci) before hcd is created, and the hcd will assign itself as ci controller's drvdata during the hcd creation function (in usb_create_shared_hcd), so it overwrites the real ci's drvdata which we want to use. So, if the controller is at host mode, the system suspend API will get the wrong struct ci_hdrc pointer, and cause the oops. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-11-26usb: chipidea: fix platform_no_drv_owner.cocci warningskbuild test robot
drivers/usb/chipidea/ci_hdrc_usb2.c:108:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: Peter Chen <peter.chen@freescale.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26usb: chipidea: Fixed a few typos in commentsMickael Maison
Fixed typos in comments of 2 drivers/usb/chipidea files Signed-off-by: Mickael Maison <mickael.maison@gmail.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26usb: chipidea: add a usb2 driver for ci13xxxAntoine Tenart
Add a USB2 ChipIdea driver for ci13xxx, with optional PHY, clock and DMA mask, to support USB2 ChipIdea controllers that don't need specific functions. Tested on the Marvell Berlin SoCs USB controllers. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Tested-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26usb: chipidea: fix phy handlingAntoine Tenart
The generic plaftorm device for ChipIdea drivers is probed by calling ci_hdrc_probe. The device structure used is not the one of the specific ChipIdea driver but the one of the generic ChipIdea platform device. This results in not being able to probe the PHYs as we're not using the right device structure. Since all ChipIdea drivers are retrieving their PHYs in their specific driver code, this didn't impact any of them yet. Fixes it using the right device structure (dev->parent). Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26usb: chipidea: remove duplicate dev_set_drvdata for host_startPeter Chen
The core driver has already done it, besides, move set driver data operation just after ci has allocated successfully in case some code (like ci_role_start) want to access this driver data. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26usb: chipidea: parameter 'mode' isn't needed for hw_device_resetPeter Chen
The hw_device_reset is dedicated to be used at device mode initializaiton, so delete the parameter 'mode'. For host driver, the ehci driver will handle all things. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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