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path: root/drivers/usb/mtu3/mtu3_plat.c
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* usb: mtu3: add optional clock xhci_ck and frmcnt_ckChunfeng Yun2023-04-201-0/+2
| | | | | | | | | | | Add optional clock 'xhci_ck' which is usually the same as sys_ck, but some SoC use two separated clocks when the controller supports dual role mode; Add optional clock 'frmcnt_ck' used on 4nm or advanced process SoC. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20230417025203.18097-7-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: fix failed runtime suspend in host only modeChunfeng Yun2022-09-301-0/+2
| | | | | | | | | | | | | | When the dr_mode is "host", after the host enter runtime suspend, the mtu3 can't do it, because the mtu3's device wakeup function is not enabled, instead it's enabled in gadget init function, to fix the issue, init wakeup early in mtu3's probe() Fixes: 6b587394c65c ("usb: mtu3: support suspend/resume for dual-role mode") Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reported-by: Tianping Fang <tianping.fang@mediatek.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20220929064459.32522-1-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: check capability of usb3 dual roleChunfeng Yun2022-07-081-4/+28
| | | | | | | | | | | | | It is capable of supporting usb3 dual role if there is at least one usb3 port for device and xhci controller, we can check it from the controller's capability, so no need the property "mediatek,usb3-drd" anymore, but I find the property is not decribed in dt-binding. Meanwhile, also take into account if the u3 port is disabled when the u3 phy is shared with pcie. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20220708071903.25752-4-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: add feature to disable device's usb3 portChunfeng Yun2022-07-081-2/+2
| | | | | | | | | | | | We may want to disable device's usb3 port when the combo phy is switched from usb3 mode to pcie mode for some projects. Meanwhile rename member @is_u3_ip to @u3_capable to avoid misleading, due to the member's value may be changed when disable usb3 port, but the controller is still a usb3 IP which also tells us how to manage the fifo. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20220708071903.25752-3-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: add support controller resetChunfeng Yun2022-06-101-0/+7
| | | | | | | | | | | Add support controller reset via a reset-controller usually in infracfg, it's different with the software reset by IPPC which only used to reset MAC, and it will also reset IPPC meanwhile. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20220523090449.14430-4-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: enable wake-up interrupt after runtime_suspend calledChunfeng Yun2021-10-271-1/+1
| | | | | | | | | Use the new API dev_pm_set_dedicated_wake_irq_reverse() to request dedicated wake-up interrupt, due to we want to enable the wake IRQ after running ->runtime_suspend(). Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* usb: mtu3: fix random remote wakeupChunfeng Yun2021-08-261-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | Some platforms, e.g. 8183/8192, use low level latch way to keep wakeup signal, it may latch a wrong signal if debounce more time, and enable wakeup earlier. ____________________ ip_sleep ____/ \__________ ___________________ wakeup_signal ____________/ \______ _______________________________ wakeup_en _______/ ^ ^ |(1) |(2) latch wakeup_signal mistakenly at (1), should latch it at (2); Workaround: delay about 100us to enable wakeup, meanwhile decrease debounce time. Fixes: b1a344589eea ("usb: mtu3: support ip-sleep wakeup for MT8183") Cc: stable@vger.kernel.org Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20210826083637.33237-2-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: return successful suspend statusChunfeng Yun2021-08-261-0/+1
| | | | | | | | | | Forgot 'return 0;' when suspend successfully, make the mistake when I split patches. Fixes: 6b587394c65c ("usb: mtu3: support suspend/resume for dual-role mode") Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20210826083637.33237-1-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: support suspend/resume for dual-role modeChunfeng Yun2021-07-271-23/+61
| | | | | | | | | | | Support suspend/resume for dual-role mode including the single port and multi-ports supported by host controller, when the host supports mult-ports, only port0 (u2/u3) is used to support dual role mode. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1626340078-29111-14-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: support suspend/resume for device modeChunfeng Yun2021-07-271-12/+35
| | | | | | | | | Support suspend/resume for device mode if the device is not connected with a host, otherwise reject to suspend. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1626340078-29111-13-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: support runtime PM for host modeChunfeng Yun2021-07-271-6/+58
| | | | | | | | | | Use a dedicated wakeup irq for runtime suspend/resume, and interrupts names are provided if using wakeup irq, this patch only support host mode. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1626340078-29111-11-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: add new helpers for host suspend/resumeChunfeng Yun2021-07-271-2/+2
| | | | | | | | | Extract two helpers for host suspend and resume, will make it easy to support dual-role mode suspend/resume later. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1626340078-29111-10-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: support option to disable usb2 portsChunfeng Yun2021-07-271-2/+9
| | | | | | | | | | Add support to disable specific usb2 host ports, it's useful when a usb2 port is disabled on some platforms, but enabled on others for the same SoC. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1626340078-29111-9-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: use clock bulk to get clocksChunfeng Yun2021-06-151-72/+14
| | | | | | | | | Use clock bulk helpers to get/enable/disable clocks, meanwhile make sys_ck optional, then will be easier to handle clocks. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1623139069-8173-24-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: skip getting extcon when use manual drd switchChunfeng Yun2021-06-031-1/+4
| | | | | | | | | When use manual drd switch, extcon is not used in fact, so no need get it even it exists, just skip it like using role switch. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1622182260-23767-5-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: use dev_err_probe to print error log about extconChunfeng Yun2021-06-031-2/+2
| | | | | | | | Print an error log when the error number is not -EPROBE_DEFER Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1622182260-23767-4-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: drop CONFIG_OFChunfeng Yun2021-03-261-6/+1
| | | | | | | | | The driver can match only the devices created by the OF core via the DT table, so the table should be always used. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1616482975-17841-12-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: convert to devm_platform_ioremap_resource_bynameChunfeng Yun2020-07-291-3/+1
| | | | | | | | Use devm_platform_ioremap_resource_byname() to simplify code Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1595404275-8449-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: register a USB Role Switch for dual role modeChunfeng Yun2019-09-031-1/+2
| | | | | | | | | | | Because extcon is not allowed for new bindings, and the dual role switch is supported by USB Role Switch, especially for Type-C drivers, so register a USB Role Switch to support the new way Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1567070558-29417-12-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: get optional clock by devm_clk_get_optional()Chunfeng Yun2019-04-191-16/+3
| | | | | | | | | | | | Use devm_clk_get_optional() to get optional clock instead of optional_clk_get() which uses devm_clk_get() to get clock and checks for -EPROBE_DEFER but not -ENOENT as devm_clk_get_optional() does, in fact, only ignoring -ENOENT will cover more errors, so the replacement doesn't change original purpose. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: add debugfs interface filesChunfeng Yun2019-03-261-1/+6
| | | | | | | | | | | This adds more debugfs consumers. The debugfs entries read some important registers, fifo status, QMU ring, endpoint status, and IPPC probe interface to get internal status. With these entries, users can check the registers, endpoint and GPD used during run time. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: rebuild the code of getting vbus regulatorChunfeng Yun2019-03-261-5/+3
| | | | | | | Remove local variable @vbus and use @dev instead of @pdev->dev Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: print useful information also for device and host modesChunfeng Yun2019-03-261-2/+3
| | | | | | | | Print useful information not only dual-role mode but also device mode and host mode. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: check return value of devm_extcon_register_notifier()Chunfeng Yun2019-03-261-1/+7
| | | | | | | | Check the return value of devm_extcon_register_notifier() and add error handling. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb/mtu3: power down device ip at setupHsin-Yi, Wang2018-12-051-0/+8
| | | | | | | | | | | Originally, when dr_mode is USB_DR_MODE_HOST, it didn't power down device ip, so host ip sleep will fail at ssusb_host_disable. Power down device ip at ssusb_host_setup. Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org> Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: simplify getting .drvdataWolfram Sang2018-04-221-4/+2
| | | | | | | | | We should get drvdata from struct device directly. Going via platform_device is an unneeded step back and forth. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: supports remote wakeup for mt2712 with two SSUSB IPsChunfeng Yun2018-01-091-3/+5
| | | | | | | | | | The old way of usb wakeup only supports platform with single SSUSB IP, such as mt8173, but mt2712 has two SSUSB IPs, so rebuild its flow and also supports the new glue layer of usb wakeup on mt2712 which is different from mt8173. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: fix error code for getting extcon deviceChunfeng Yun2018-01-091-1/+1
| | | | | | | | | When failing to get extcon device, extcon_get_edev_by_phandle() may return different error codes, but not only -EPROBE_DEFER, so can't always return -EPROBE_DEFER, and fix it. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: mtu3: Remove redundant license textGreg Kroah-Hartman2017-11-071-10/+0
| | | | | | | | | | | | | | | | Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: add SPDX identifiers to all remaining files in drivers/usb/Greg Kroah-Hartman2017-11-041-0/+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>
* usb: mtu3: set invalid dr_mode as dual-role modeChunfeng Yun2017-10-191-4/+2
| | | | | | | | Treat dr_mode of USB_DR_MODE_UNKNOWN as USB_DR_MODE_OTG to enhance functional robustness. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* usb: mtu3: get optional vbus for host only modeChunfeng Yun2017-10-191-4/+4
| | | | | | | | | | When dr_mode is set as USB_DR_MODE_HOST, it's better to try to get optional vbus, this can increase flexibility, although we can set vbus as always on for regulator or put it in host driver to turn it on. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* usb: mtu3: use FORCE/RG_IDDIG to implement manual DRD switchChunfeng Yun2017-10-191-35/+3
| | | | | | | | | In order to keep manual DRD switch independent on IDDIG interrupt, make use of FORCE/RG_IDDIG instead of IDDIG EINT interrupt to implement manual DRD switch function. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* usb: mtu3: add optional mcu and dma bus clocksChunfeng Yun2017-10-191-40/+81
| | | | | | | | There are mcu_bus and dma_bus clocks needed to be turned on/off by driver on some SoCs, so add them as optional ones Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* usb: mtu3: support option to disable usb3 portsChunfeng Yun2017-10-191-2/+6
| | | | | | | | | Add support to disable specific usb3 ports, it's useful when usb3 phy is shared with PCIe or SATA, because we should disable the corresponding usb3 port if the phy is used by PCIe or SATA. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* usb: mtu3: add generic compatible stringChunfeng Yun2017-08-151-0/+1
| | | | | | | | | The mtu3 driver is a generic driver for MediaTek usb3 DRD IP, add a generic compatible to avoid confusion when support new SoCs but use a compatible with specific SoC's name "mt8173". Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* usb: mtu3: Handle return value of clk_prepare_enableArvind Yadav2017-06-131-3/+20
| | | | | | | | clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: remove redundant dev_err call in get_ssusb_rscs()Wei Yongjun2017-02-091-3/+1
| | | | | | | | | There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: make the reference clock optionalChunfeng Yun2017-02-081-2/+9
| | | | | | | | Make the reference clock optional for DTS backward compatibility and ignore the error if it does not exist. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: add reference clockChunfeng Yun2017-01-191-2/+19
| | | | | | | | usually, the reference clock comes from 26M oscillator directly, but some SoCs are not, add it for compatibility. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: get resources that cause deferred probe earlierChunfeng Yun2017-01-191-12/+12
| | | | | | | | Some resources such as regulator, clock usually cause deferred probe, get them earlier to avoid more ineffective processing. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: dual-role mode supportChunfeng Yun2016-10-271-4/+82
| | | | | | | | | support dual-role mode; there are two ways to switch between host and device modes, one is by idpin, another is by debugfs which depends on user input. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: mtu3: host only mode supportChunfeng Yun2016-10-271-67/+222
| | | | | | | | | | supports host only mode and the code is ported from host/xhci-mtk.c IPPC register shared between host and device is moved into common glue layer. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* usb: Add MediaTek USB3 DRD driverChunfeng Yun2016-10-271-0/+251
This patch adds support for the MediaTek USB3 controller integrated into MT8173. It currently supports High-Speed Peripheral Only mode. Super-Speed Peripheral, Dual-Role Device and Host Only (xHCI) modes will be added in the next patchs. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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