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path: root/drivers/usb/dwc3/dwc3-omap.c
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2023-05-28usb: dwc3-omap: Convert to platform remove callback returning voidUwe Kleine-König1-4/+2
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/20230517230239.187727-20-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-15usb: dwc3: omap: fix "unbalanced disables for smps10_out1" on omap5evmH. Nikolaus Schaller1-1/+1
Usually, the vbus_regulator (smps10 on omap5evm) boots up disabled. Hence calling regulator_disable() indirectly through dwc3_omap_set_mailbox() during probe leads to: [ 10.332764] WARNING: CPU: 0 PID: 1628 at drivers/regulator/core.c:2853 _regulator_disable+0x40/0x164 [ 10.351919] unbalanced disables for smps10_out1 [ 10.361298] Modules linked in: dwc3_omap(+) clk_twl6040 at24 gpio_twl6040 palmas_gpadc palmas_pwrbutton industrialio snd_soc_omap_mcbsp(+) snd_soc_ti_sdma display_connector ti_tpd12s015 drm leds_gpio drm_panel_orientation_quirks ip_tables x_tables ipv6 autofs4 [ 10.387818] CPU: 0 PID: 1628 Comm: systemd-udevd Not tainted 5.17.0-rc1-letux-lpae+ #8139 [ 10.405129] Hardware name: Generic OMAP5 (Flattened Device Tree) [ 10.411455] unwind_backtrace from show_stack+0x10/0x14 [ 10.416970] show_stack from dump_stack_lvl+0x40/0x4c [ 10.422313] dump_stack_lvl from __warn+0xb8/0x170 [ 10.427377] __warn from warn_slowpath_fmt+0x70/0x9c [ 10.432595] warn_slowpath_fmt from _regulator_disable+0x40/0x164 [ 10.439037] _regulator_disable from regulator_disable+0x30/0x64 [ 10.445382] regulator_disable from dwc3_omap_set_mailbox+0x8c/0xf0 [dwc3_omap] [ 10.453116] dwc3_omap_set_mailbox [dwc3_omap] from dwc3_omap_probe+0x2b8/0x394 [dwc3_omap] [ 10.467021] dwc3_omap_probe [dwc3_omap] from platform_probe+0x58/0xa8 [ 10.481762] platform_probe from really_probe+0x168/0x2fc [ 10.481782] really_probe from __driver_probe_device+0xc4/0xd8 [ 10.481782] __driver_probe_device from driver_probe_device+0x24/0xa4 [ 10.503762] driver_probe_device from __driver_attach+0xc4/0xd8 [ 10.510018] __driver_attach from bus_for_each_dev+0x64/0xa0 [ 10.516001] bus_for_each_dev from bus_add_driver+0x148/0x1a4 [ 10.524880] bus_add_driver from driver_register+0xb4/0xf8 [ 10.530678] driver_register from do_one_initcall+0x90/0x1c4 [ 10.536661] do_one_initcall from do_init_module+0x4c/0x200 [ 10.536683] do_init_module from load_module+0x13dc/0x1910 [ 10.551159] load_module from sys_finit_module+0xc8/0xd8 [ 10.561319] sys_finit_module from __sys_trace_return+0x0/0x18 [ 10.561336] Exception stack(0xc344bfa8 to 0xc344bff0) [ 10.561341] bfa0: b6fb5778 b6fab8d8 00000007 b6ecfbb8 00000000 b6ed0398 [ 10.561341] bfc0: b6fb5778 b6fab8d8 855c0500 0000017b 00020000 b6f9a3cc 00000000 b6fb5778 [ 10.595500] bfe0: bede18f8 bede18e8 b6ec9aeb b6dda1c2 [ 10.601345] ---[ end trace 0000000000000000 ]--- Fix this unnecessary warning by checking if the regulator is enabled. Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Link: https://lore.kernel.org/r/af3b750dc2265d875deaabcf5f80098c9645da45.1646744616.git.hns@goldelico.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10usb: dwc3: omap: improve extcon initializationMarcel Hamer1-0/+5
When extcon is used in combination with dwc3, it is assumed that the dwc3 registers are untouched and as such are only configured if VBUS is valid or ID is tied to ground. In case VBUS is not valid or ID is floating, the registers are not configured as such during driver initialization, causing a wrong default state during boot. If the registers are not in a default state, because they are for instance touched by a boot loader, this can cause for a kernel error. Signed-off-by: Marcel Hamer <marcel@solidxs.se> Link: https://lore.kernel.org/r/20210427122118.1948340-1-marcel@solidxs.se Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-15usb: dwc3: Replace HTTP links with HTTPS onesAlexander A. Klimov1-1/+1
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200711135804.19735-1-grandmaster@al2klimov.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-03usb: dwc3: dwc3-omap: Do not read DMA statusLee Jones1-6/+1
Commit af566a0be6e49 ("usb: dwc3: omap: get rid of dma_status") rendered reading DMA status from the H/W even more redundant. The variable hasn't been read/used since 2016. Remove the set but unused variable and the call which populates it. Fixes the following W=1 warning: drivers/usb/dwc3/dwc3-omap.c: In function ‘dwc3_omap_probe’: drivers/usb/dwc3/dwc3-omap.c:460:8: warning: variable ‘reg’ set but not used [-Wunused-but-set-variable] 460 | u32 reg; | ^~~ Cc: Felipe Balbi <balbi@kernel.org> Cc: Andrzej Siewior <bigeasy@linutronix.de> Cc: linux-omap@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20200702144625.2533530-9-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-02Merge tag 'usb-for-v5.4' of ↵Greg Kroah-Hartman1-4/+7
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: USB: Changes for v5.4 merge window With only 45 non-merge commits, we have a small merge window from the Gadget perspective. The biggest change here is the addition of the Cadence USB3 DRD Driver. All other changes are small, non-critical fixes or smaller new features like the improvement to BESL handling in dwc3. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> * tag 'usb-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (45 commits) usb: gadget: net2280: Add workaround for AB chip Errata 11 usb: gadget: net2280: Move all "ll" registers in one structure usb: dwc3: gadget: Workaround Mirosoft's BESL check usb:cdns3 Fix for stuck packets in on-chip OUT buffer. usb: cdns3: Add Cadence USB3 DRD Driver usb: common: Simplify usb_decode_get_set_descriptor function. usb: common: Patch simplify usb_decode_set_clear_feature function. usb: common: Separated decoding functions from dwc3 driver. dt-bindings: add binding for USBSS-DRD controller. usb: gadget: composite: Set recommended BESL values usb: dwc3: gadget: Set BESL config parameter usb: dwc3: Separate field holding multiple properties usb: gadget: Export recommended BESL values usb: phy: phy-fsl-usb: Make structure fsl_otg_initdata constant usb: udc: lpc32xx: silence fall-through warning usb: dwc3: meson-g12a: fix suspend resume regulator unbalanced disables usb: udc: lpc32xx: remove set but not used 3 variables usb: gadget: udc: core: Fix segfault if udc_bind_to_driver() for pending driver fails usb: dwc3: st: Add of_dev_put() in probe function usb: dwc3: st: Add of_node_put() before return in probe function ...
2019-08-09usb: dwc3: omap: squash include/linux/platform_data/dwc3-omap.hMasahiro Yamada1-1/+6
This enum is only used in drivers/usb/dwc3/dwc3-omap3.c Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-08-09usb: dwc3: omap: use devm_platform_ioremap_resource() to simplify codeYueHaibing1-3/+1
Use devm_platform_ioremap_resource() to simplify the code a bit. This is detected by coccinelle. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-07-30usb: Remove dev_err() usage after platform_get_irq()Stephen Boyd1-3/+1
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>
2018-02-12usb: dwc3: omap: don't miss events during suspend/resumeRoger Quadros1-0/+16
The USB cable state can change during suspend/resume so be sure to check and update the extcon state. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-11-07USB: dwc3: Remove redundant license textGreg Kroah-Hartman1-9/+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. Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Patrice Chotard <patrice.chotard@st.com> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.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-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>
2017-08-09usb: dwc3: omap: fix error return code in dwc3_omap_probe()Gustavo A. R. Silva1-2/+2
platform_get_irq() returns an error code, but the dwc3-omap driver ignores it and always returns -EINVAL. This is not correct and, prevents -EPROBE_DEFER from being propagated properly. Notice that platform_get_irq() no longer returns 0 on error: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af Print and propagate the return value of platform_get_irq on failure. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-07-17usb: dwc3: omap: remove IRQ_NOAUTOEN used with shared irqVignesh R1-10/+8
IRQ_NOAUTOEN cannot be used with shared IRQs, since commit 04c848d39879 ("genirq: Warn when IRQ_NOAUTOEN is used with shared interrupts") and kernel now throws a warn dump. But OMAP DWC3 driver uses this flag. As per commit 12a7f17fac5b ("usb: dwc3: omap: fix race of pm runtime with irq handler in probe") that introduced this flag, PM runtime can race with IRQ handler when deferred probing happens due to extcon, therefore IRQ_NOAUTOEN needs to be set so that irq is not enabled until extcon is registered. Remove setting of IRQ_NOAUTOEN and move the registration of shared irq to a point after dwc3_omap_extcon_register() and of_platform_populate(). This avoids possibility of probe deferring and above said race condition. Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: use BIT() macro where possibleRoger Quadros1-24/+24
To avoid checkpatch warnings with new patches let's start using the BIT() macro wherever possible. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: dwc3-omap: Fix missing break in dwc3_omap_set_mailbox()Roger Quadros1-0/+1
We need to break from all cases if we want to treat each one of them separately. Reported-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Fixes: d2728fb3e01f ("usb: dwc3: omap: Pass VBUS and ID events transparently") Cc: <stable@vger.kernel.org> #v4.8+ Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: dwc3: Fix incorrect type for utmi modeFranck Demathieu1-1/+1
The utmi mode is unsigned according the dt-bindings. Fix sparse issue (-Wtypesign): drivers/usb/dwc3/dwc3-omap.c:391:50: warning: incorrect type in argument 3 (different signedness) drivers/usb/dwc3/dwc3-omap.c:391:50: expected unsigned int [usertype] *out_value drivers/usb/dwc3/dwc3-omap.c:391:50: got int *<noident> Signed-off-by: Franck Demathieu <fdemathieu@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-24usb: dwc3: omap: Replace the extcon APIChanwoo Choi1-13/+7
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() Cc: linux-omap@vger.kernel.org Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-02usb: dwc3: omap: fix race of pm runtime with irq handler in probeGrygorii Strashko1-2/+4
Now races can happen between interrupt handler execution and PM runtime in error handling code path in probe and in dwc3_omap_remove() which will lead to system crash: in probe: ... err1: pm_runtime_put_sync(dev); ^^ PM runtime can race with IRQ handler when deferred probing happening due to extcon pm_runtime_disable(dev); return ret; in dwc3_omap_remove: ... dwc3_omap_disable_irqs(omap); ^^ IRQs are disabled in HW, but handler may still run of_platform_depopulate(omap->dev); pm_runtime_put_sync(&pdev->dev); ^^ PM runtime can race with IRQ handler pm_runtime_disable(&pdev->dev); return 0; So, OMAP DWC3 IRQ need to be disabled before calling pm_runtime_put() in probe and in dwc3_omap_remove(). Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-06-20usb: dwc3: omap: Pass VBUS and ID events transparentlyRoger Quadros1-8/+6
Don't make any decisions regarding VBUS session based on ID status. That is best left to the OTG core. Pass ID and VBUS events independent of each other so that OTG core knows exactly what to do. This makes dual-role with extcon work with OTG irq on OMAP platforms. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-06-20usb: dwc3: omap: Don't set POWERPRESENTRoger Quadros1-6/+3
TRM [1] recommends that POWERPRESENT bit must not be set and left at it's default value of 0. [1] OMAP542x TRM - http://www.ti.com/lit/pdf/swpu249 Section 23.11.4.5.1 Mailbox VBUS/ID Management "Because PIPE powerpresent has a different meaning in host and in device mode, and because of the redundancy with the UTMI signals, the controller ORes together the appropriate PIPE and UTMI inputs to create its internal VBUS status. For that reason, it is recommended to leave field USBOTGSS_UTMI_OTG_STATUS[9] POWERPRESENT at its default value (=0), and only to fill in the USB2 VBUS status fields in the same register." Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-06-20usb: dwc3: omap: Mark the interrupt handler as sharedRoger Quadros1-1/+1
On OMAPs, OTG events come on the same IRQ so we need to share this IRQ with the OTG device driver. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-06-20usb: dwc3: omap: use request_threaded_irq()Roger Quadros1-6/+26
We intend to share this interrupt with the OTG driver an to ensure that irqflags match for the shared interrupt handlers we use request_threaded_irq() If we don't use request_treaded_irq() then forced threaded irq will set IRQF_ONESHOT and this won't match with the OTG IRQ handler's IRQ flags. NOTE: OTG IRQ handler is yet to be added. This is a preparatory step. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-28Merge tag 'usb-for-v4.7' of ↵Greg Kroah-Hartman1-9/+0
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: changes for v4.7 merge window Here's the big USB Gadget pull request. This time not as large as usual with only 57 non-merge commits. The most important part here is, again, all the work on dwc3. This time around we're treating all endpoints (except for control endpoint) exactly the same. They all have the same amount of TRBs on the ring, they all treat the ring as an actual ring with a link TRB pointing to the head, etc. We're also helping the host side burst (on SuperSpeed GEN1 or GEN2 at least) for as long as possible until the endpoint returns NRDY. Other than this big TRB ring rework on dwc3, we also have a dwc3-omap DMA initialization fix, some extra debugfs files to aid in some odd debug sessions and a complete removal of our FIFO resizing logic. We have a new quirk for some dwc3 P3 quirk in some implementations. The rest is basically non-critical fixes and the usual cleanups.
2016-04-19usb: dwc3: omap: get rid of dma_statusRoger Quadros1-6/+0
dma_status bit flag is set but never really used so get rid of it. Reported-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-18usb: dwc3: omap: drop dma_mask configurationGrygorii Strashko1-3/+0
The DWC3 OMAP driver supports DT-boot only, as result dma_mask will be always configured properly from DT - of_platform_device_create_pdata()->of_dma_configure(). More over, dwc3-omap.c can be built as module and in this case it's unsafe to assign local variable as dma_mask. Hence, remove dma_mask configuration code. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-18usb: dwc3: omap: fix up error path on probe()Felipe Balbi1-8/+4
Even if pm_runtime_get*() fails, we *MUST* call pm_runtime_put_sync() before disabling PM. While at it, remove superfluous dwc3_omap_disable_irqs() in error path. Signed-off-by: Felipe Balbi <balbi@kernel.org> [nsekhar@ti.com: patch description updates] Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2015-09-14usb: dwc3: omap: enable irqs latelyFelipe Balbi1-2/+2
If we enable IRQs before requesting our extcon device, we might fall into a situation where and IRQ fires before we're ready to handle it. Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-07-29usb: dwc3: omap: Replace deprecated API of extconChanwoo Choi1-19/+13
This patch removes the deprecated notifier API of extcon framwork and then use the new extcon API with the unique id to indicate the each external connector (USB, USB-HOST). Alter deprecated API as following: - extcon_register_interest() -> extcon_register_notifier() - extcon_get_cable_state(*edev, char *) -> extcon_get_cable_state_(*edev, id) Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-07-29usb: dwc3: omap: drop dev_dbg() usageFelipe Balbi1-39/+4
Some of the messages were plain unnecessary and some were actually errors. Fix it all up. Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-27usb: dwc3: dwc3-omap: correct the register macrosBin Liu1-47/+47
The macros related to register UTMI_OTG_CTRL and UTMI_OTG_STATUS are swapped. Correct them for readability. Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-09usb: dwc3: omap: call of_platform_depopulate() insteadFelipe Balbi1-10/+1
This patch fixes a bug where removing dwc3-omap.ko would not trigger removal of dwc3.ko. of_platform_depopulate() already bakes an easy to use API for removing all our children which were populated during probe(); Let's use that one instead of cooking our own solution. Note that this is kind of a revert of commit c5a1fbc (usb: dwc3: dwc3-omap: Fix the crash on module removal) although we can't simply revert that because a direct call to platform_device_unregister would also be flakey. Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-02-23usb: dwc3: dwc3-omap: Fix disable IRQGeorge Cherian1-2/+28
In the wrapper the IRQ disable should be done by writing 1's to the IRQ*_CLR register. Existing code is broken because it instead writes zeros to IRQ*_SET register. Fix this by adding functions dwc3_omap_write_irqmisc_clr() and dwc3_omap_write_irq0_clr() which do the right thing. Fixes: 72246da40f37 ("usb: Introduce DesignWare USB3 DRD Driver") Cc: <stable@vger.kernel.org> # v3.2+ Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-03usb: dwc3: dwc3-omap: get rid of ->prepare()/->complete()George Cherian1-18/+2
Enabling the core interrupts in complete is too late for XHCI, and stops it from proper operation. The root of the problem is due to a disagreement between dwc3-omap and XHCI about when IRQs should be enabled. As it turns out, ->resume's documentation states that: "... generally the driver is expected to start working again, responding to hardware events and software requests (the device itself may be left in a low-power state, waiting for a runtime resume to occur) ..." From that we infer that IRQs must be unmasked by the end of ->resume(). Due to that, we will remove ->prepare() and ->complete() and disable/enable interrupts in ->suspend()/->resume(). Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-10-23Revert "usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in ↵Roger Quadros1-13/+2
prepare/complete" This reverts commit 02dae36aa649a66c5c6181157ddd806e7b4913fc. That commit is bogus in two ways: 1) There's no way dwc3-omap's ->suspend() can cause any effect on xhci's ->suspend(). Linux device driver model guarantees that a parent's ->suspend() will only be called after all children are suspended. dwc3-omap is the parent of the parent of xhci. 2) When implementing Deep Sleep states where context is lost, USBOTGSS_IRQ0 register, well, looses context so we _must_ rewrite it otherwise core IRQs will never be reenabled and USB will appear to be dead. Fixes: 02dae36 (usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in prepare/complete) Cc: <stable@vger.kernel.org> # v3.17 Cc: George Cherian <george.cherian@ti.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-09-16Merge tag 'v3.17-rc5' into nextFelipe Balbi1-1/+1
Linux 3.17-rc5 Signed-off-by: Felipe Balbi <balbi@ti.com> Conflicts: Documentation/devicetree/bindings/usb/mxs-phy.txt drivers/usb/phy/phy-mxs-usb.c
2014-09-08Merge tag 'v3.17-rc4' into nextFelipe Balbi1-1/+1
Merge Linux 3.17-rc4 here so we have all the latest fixes on next too. This also cleans up a few conflicts when applying patches. Signed-off-by: Felipe Balbi <balbi@ti.com> Conflicts: drivers/usb/gadget/Makefile drivers/usb/gadget/function/Makefile drivers/usb/gadget/legacy/Makefile drivers/usb/phy/phy-samsung-usb.h
2014-09-04usb: dwc3: omap: fix ordering for runtime pm callsFelipe Balbi1-1/+1
we don't to gate clocks until our children are done with their remove path. Fixes: af310e9 (usb: dwc3: omap: use runtime API's to enable clocks) Cc: <stable@vger.kernel.org> # v3.9+ Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-08-20usb: dwc3: remove unnecessary OOM messagesJingoo Han1-3/+1
The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-08-19usb: dwc3: omap: signedness bug in dwc3_omap_set_utmi_mode()Dan Carpenter1-1/+1
"ret" should be signed. It's only used for zero and negative error codes. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-07-21Merge tag 'usb-for-v3.17' of ↵Greg Kroah-Hartman1-86/+86
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: patches for v3.17 merge window Surprisingly enough, while a big set of patches, the majority is composed of cleanups (using devm_*, fixing sparse errors, moving code around, adding const, etc). The highlights are addition of new support for PLX USB338x devices, and support for USB 2.0-only configurations of the DWC3 IP core. Signed-of-by: Felipe Balbi <balbi@ti.com>
2014-07-16usb: dwc3: omap: add dwc3_omap_extcon_register functionGeorge Cherian1-26/+39
Move the extcon related code to its own function. Improve code readability, decrease the dwc3_probe() size. Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-07-16usb: dwc3: omap: add dwc3_omap_set_utmi_mode() functionGeorge Cherian1-19/+25
Move find and set the utmi mode to its own separate function. Improve code readability, decrease the dwc3_probe() size. Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-07-16usb: dwc3: omap: add dwc3_omap_map_offset() functionGeorge Cherian1-16/+22
Move map offset to its own separate function. Improve code readability, decrease the dwc3_probe() size. Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-07-16usb: dwc3: omap: remove x_major calculation from revision registerGeorge Cherian1-32/+7
Remove the x_major calculation logic from the wrapper revision register to differentiate between OMAP5 and AM437x. This was done to find the register offsets of wrapper register. Now that We do it using dt compatible, remove the whole logic. Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-06-19usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in prepare/completeGeorge Cherian1-2/+13
The dwc3 wrapper driver should not be fiddling with the core interrupts. Disabling the core interrupts in prepare stops xhci from proper operation. So remove disable/enable of core interrupts from prepare/complete. Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-06-19usb: dwc3: dwc3-omap: Fix the crash on module removalGeorge Cherian1-1/+1
Following crash is seen on dwc3_omap removal Unable to handle kernel NULL pointer dereference at virtual address 00000018 pgd = ec098000 [00000018] *pgd=ad1f9831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] SMP ARM Modules linked in: usb_f_ss_lb g_zero usb_f_acm u_serial usb_f_ecm u_ether libcomposite configfs snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_hwdep snd_soc_omap snd_pcm_dmaengine snd_soc_core snd_compress snd_pcm snd_tim] CPU: 0 PID: 1296 Comm: rmmod Tainted: G W 3.15.0-rc4-02716-g95c4e18-dirty #10 task: ed05a080 ti: ec368000 task.ti: ec368000 PC is at release_resource+0x14/0x7c LR is at release_resource+0x10/0x7c pc : [<c0044724>] lr : [<c0044720>] psr: 60000013 sp : ec369ec0 ip : 60000013 fp : 00021008 r10: 00000000 r9 : ec368000 r8 : c000e7a4 r7 : 00000081 r6 : bf0062c0 r5 : ed7cd000 r4 : ed7d85c0 r3 : 00000000 r2 : 00000000 r1 : 00000011 r0 : c086d08c Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c5387d Table: ac098059 DAC: 00000015 Process rmmod (pid: 1296, stack limit = 0xec368248) Stack: (0xec369ec0 to 0xec36a000) 9ec0: 00000000 00000001 ed7cd000 c034de94 ed7cd010 ed7cd000 00000000 c034e194 9ee0: 00000000 bf0062cc ed7cd010 c03490b0 ed154cc0 ed4c2570 ed2b8410 ed156810 ed156810 bf006d24 c034db9c c034db84 c034c518 9f20: bf006d24 ed156810 bf006d24 c034cd2c bf006d24 bf006d68 00000800 c034c340 9f40: 00000000 c00a9e5c 00000020 00000000 bf006d68 00000800 ec369f4c 33637764 9f60: 616d6f5f 00000070 00000001 ec368000 ed05a080 c000e670 00000001 c0084010 9f80: 00021088 00000800 00021088 00000081 80000010 0000e6f4 00021088 00000800 9fa0: 00021088 c000e5e0 00021088 00000800 000210b8 00000800 e04f6d00 e04f6d00 9fc0: 00021088 00000800 00021088 00000081 00000001 00000000 be91de08 00021008 9fe0: 4d768880 be91dbb4 b6fc5984 4d76888c 80000010 000210b8 00000000 00000000 [<c0044724>] (release_resource) from [<c034de94>] (platform_device_del+0x6c/0x9c) [<c034de94>] (platform_device_del) from [<c034e194>] (platform_device_unregister+0xc/0x18) [<c034e194>] (platform_device_unregister) from [<bf0062cc>] (dwc3_omap_remove_core+0xc/0x14 [dwc3_omap]) [<bf0062cc>] (dwc3_omap_remove_core [dwc3_omap]) from [<c03490b0>] (device_for_each_child+0x34/0x74) [<c03490b0>] (device_for_each_child) from [<bf0062b4>] (dwc3_omap_remove+0x6c/0x78 [dwc3_omap]) [<bf0062b4>] (dwc3_omap_remove [dwc3_omap]) from [<c034db9c>] (platform_drv_remove+0x18/0x1c) [<c034db9c>] (platform_drv_remove) from [<c034c518>] (__device_release_driver+0x70/0xc8) [<c034c518>] (__device_release_driver) from [<c034cd2c>] (driver_detach+0xb4/0xb8) [<c034cd2c>] (driver_detach) from [<c034c340>] (bus_remove_driver+0x4c/0x90) [<c034c340>] (bus_remove_driver) from [<c00a9e5c>] (SyS_delete_module+0x10c/0x198) [<c00a9e5c>] (SyS_delete_module) from [<c000e5e0>] (ret_fast_syscall+0x0/0x48) Code: e1a04000 e59f0068 eb14505e e5943010 (e5932018) ---[ end trace 7e2a8746ff4fc811 ]--- Segmentation fault [ balbi@ti.com : add CONFIG_OF dependency ] Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-05-15usb: dwc3: no need to initialize ret variableAndy Shevchenko1-1/+1
First usage of ret variable will re-write initial value. Thus, there is no need to initialize it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-04-02Merge tag 'usb-3.15-rc1' of ↵Linus Torvalds1-5/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB patches from Greg KH: "Here's the big USB pull request for 3.15-rc1. The normal set of patches, lots of controller driver updates, and a smattering of individual USB driver updates as well. All have been in linux-next for a while" * tag 'usb-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (249 commits) xhci: Transition maintainership to Mathias Nyman. USB: disable reset-resume when USB_QUIRK_RESET is set USB: unbind all interfaces before rebinding any usb: phy: Add ulpi IDs for SMSC USB3320 and TI TUSB1210 usb: gadget: tcm_usb_gadget: stop format strings usb: gadget: f_fs: add missing spinlock and mutex unlock usb: gadget: composite: switch over to ERR_CAST() usb: gadget: inode: switch over to memdup_user() usb: gadget: f_subset: switch over to PTR_RET usb: gadget: lpc32xx_udc: fix wrong clk_put() sequence USB: keyspan: remove dead debugging code USB: serial: add missing newlines to dev_<level> messages. USB: serial: add missing braces USB: serial: continue to write on errors USB: serial: continue to read on errors USB: serial: make bulk_out_size a lower limit USB: cypress_m8: fix potential scheduling while atomic devicetree: bindings: document lsi,zevio-usb usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs usb: chipidea: imx: Use dev_name() for ci_hdrc name to distinguish USBs ...
2014-03-19extcon: Move OF helper function to extcon core and change function nameChanwoo Choi1-2/+1
This patch move simply OF helper function to extcon core and change function name as following: - of_extcon_get_extcon_dev() -> extcon_get_edev_by_phandle() Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Felipe Balbi <balbi@ti.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-20 04:20:20 +0300