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path: root/drivers/usb/mtu3
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2017-10-19usb: mtu3: set otg_sel for u2port only if works as dual-role modeChunfeng Yun
When set otg_sel(SSUSB_U2_PORT_OTG_SEL) for u2port which supports dual-role mode, the controller will automatically switch mode between host and device according to IDDIG signal. But if the u2port only supports device mode, and no IDDIG pin is provided, setting otg_sel may cause failure of detection by host. So set it only for dual-role mode. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-10-19usb: mtu3: set invalid dr_mode as dual-role modeChunfeng Yun
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>
2017-10-19usb: mtu3: get optional vbus for host only modeChunfeng Yun
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>
2017-10-19usb: mtu3: add support for usb3.1 IPChunfeng Yun
Support SuperSpeedPlus for usb3.1 device IP Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-10-19usb: mtu3: use FORCE/RG_IDDIG to implement manual DRD switchChunfeng Yun
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>
2017-10-19usb: mtu3: support 36-bit DMA addressChunfeng Yun
add support for 36-bit DMA address [ Felipe Balbi: fix printk format for dma_addr_t ] Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-10-19usb: mtu3: add optional mcu and dma bus clocksChunfeng Yun
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>
2017-10-19usb: mtu3: remove dummy wakeup debounce clocksChunfeng Yun
The wakeup debounce clocks for each ports in fact are not needed, so remove them. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-10-19usb: mtu3: support option to disable usb3 portsChunfeng Yun
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>
2017-10-19usb: mtu3: fix error return code in ssusb_gadget_init()Chunfeng Yun
When failing to get IRQ number, platform_get_irq() may return -EPROBE_DEFER, but we ignore it and always return -ENODEV, so fix it. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-22Merge tag 'usb-for-v4.14' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: changes for v4.14 merge window Not a big pull request this time around. Only 49 non-merge commits. This pull request is, however, all over the place. Most of the changes are in the bdc driver adding support for USB Phy layer and PM. Renesas adds support for R-Car H3 ES2.0 and R-Car M3-W SoCs. Also here is PM_RUNTIME support for dwc3-keystone. UDC Core got a DMA unmap fix to make sure we only unmap requests that were, indeed, mapped. Other than these, we have a lot of cleanups, many of them adding 'const' to several places.
2017-08-15usb: mtu3: add generic compatible stringChunfeng Yun
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>
2017-08-15usb: mtu3: fix ip sleep auto-exit issue when enable DRD modeChunfeng Yun
Ip sleep will auto exit if vbus comparison circuit of u2 phy is disabled when system tries to enter suspend mode, so get vbus-valid status from mac but not from u2 phy when enable DRD mode to fix the issue. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-15usb: mtu3: clear u1/u2_enable to 0 in mtu3_gadget_resetChunfeng Yun
when the device is reset by host, the status of u1_enable and u2_enable should also be restored to default value. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-15usb: mtu3: handle delayed status of the control transferChunfeng Yun
Add the delayed status handling. This is used by mass storage etc to gain some extra time to setup its internal status before it can proceed further requests, and once the gadget is ready, it will enqueue an empty packet which is used for synchronization. The issue may happen on some FGPA platform with very low cpu frequency. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-10usb: mtu3: add a vbus debugfs interfaceChunfeng Yun
Provides a new vbus debugfs interface used to turn on/off vbus regulator, it also can be used to get/put reference count of vbus, due to sometimes we need keep it alive when manually switch mtu3 to device mode. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-09usb: mtu3: add a vbus debugfs interfaceChunfeng Yun
Provides a new vbus debugfs interface used to turn on/off vbus regulator, it also can be used to get/put reference count of vbus, due to sometimes we need keep it alive when manually switch mtu3 to device mode. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-07-30usb: mtu3: fix ip sleep auto-exit issue when enable DRD modeChunfeng Yun
Ip sleep will auto exit if vbus comparison circuit of u2 phy is disabled when system tries to enter suspend mode, so get vbus-valid status from mac but not from u2 phy when enable DRD mode to fix the issue. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-30usb: mtu3: clear u1/u2_enable to 0 in mtu3_gadget_resetChunfeng Yun
when the device is reset by host, the status of u1_enable and u2_enable should also be restored to default value. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-30usb: mtu3: handle delayed status of the control transferChunfeng Yun
Add the delayed status handling. This is used by mass storage etc to gain some extra time to setup its internal status before it can proceed further requests, and once the gadget is ready, it will enqueue an empty packet which is used for synchronization. The issue may happen on some FGPA platform with very low cpu frequency. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-22usb: Convert to using %pOF instead of full_nameRob Herring
Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-13usb: mtu3: Handle return value of clk_prepare_enableArvind Yadav
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>
2017-05-25usb: mtu3: cleanup with list_first_entry_or_null()Masahiro Yamada
The combo of list_empty() and list_first_entry() can be replaced with list_first_entry_or_null(). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-11usb: mtu3: 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() Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Chunfeng Yun <chunfeng.yun@mediatek.com> Cc: linux-usb@vger.kernel.org Tested-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-02-09usb: mtu3: remove redundant dev_err call in get_ssusb_rscs()Wei Yongjun
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>
2017-02-08usb: mtu3: make the reference clock optionalChunfeng Yun
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>
2017-01-19usb: mtu3: add reference clockChunfeng Yun
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>
2017-01-19usb: mtu3: get resources that cause deferred probe earlierChunfeng Yun
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>
2016-12-07usb: mtu3: fix U3 port link issueChunfeng Yun
the issue is introduced when @is_u3_ip is used in mtu3_device_enabe() before initialized in mtu3_mem_alloc(), so get global IP information at first before used by following functins. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-07usb: mtu3: enable auto switch from U3 to U2Chunfeng Yun
inform mac2 to build U2 link automatically after U3 detect fail without software setting soft_connect. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-14usb: mtu3: declare functions staticSudip Mukherjee
The only user of the functions mtu3_irq() and gpd_ring_empty() are in the same file. They can be declared as static. Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-27usb: mtu3: dual-role mode supportChunfeng Yun
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>
2016-10-27usb: mtu3: host only mode supportChunfeng Yun
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>
2016-10-27usb: mtu3: Super-Speed Peripheral mode supportChunfeng Yun
add super-speed funtion for peripheral mode Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-27usb: Add MediaTek USB3 DRD driverChunfeng Yun
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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