starfive-tech/linux.git/drivers/usb/mtu3, branch rt-linux-release

usb: mtu3: fix random remote wakeup

2021-08-26T11:41:52+00:00

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 Link: https://lore.kernel.org/r/20210826083637.33237-2-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: return successful suspend status

2021-08-26T11:41:52+00:00

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 Link: https://lore.kernel.org/r/20210826083637.33237-1-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: fix the wrong HS mult value

2021-08-13T11:05:50+00:00

usb_endpoint_maxp() returns actual max packet size, @mult will always be zero, fix it by using usb_endpoint_maxp_mult() instead to get mult. Fixes: 4d79e042ed8b ("usb: mtu3: add support for usb3.1 IP") Cc: stable@vger.kernel.org Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1628836253-7432-3-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: use @mult for HS isoc or intr

2021-08-13T11:05:50+00:00

For HS isoc or intr, should use @mult but not @burst to save mult value. Fixes: 4d79e042ed8b ("usb: mtu3: add support for usb3.1 IP") Cc: stable@vger.kernel.org Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1628836253-7432-2-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: restore HS function when set SS/SSP

2021-08-13T11:05:50+00:00

Due to HS function is disabled when set as FS, need restore it when set as SS/SSP. Fixes: dc4c1aa7eae9 ("usb: mtu3: add ->udc_set_speed()") Cc: stable@vger.kernel.org Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1628836253-7432-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: support suspend/resume for dual-role mode

2021-07-27T13:58:37+00:00

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 Link: https://lore.kernel.org/r/1626340078-29111-14-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: support suspend/resume for device mode

2021-07-27T13:58:37+00:00

Support suspend/resume for device mode if the device is not connected with a host, otherwise reject to suspend. Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1626340078-29111-13-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: add helper to power on/down device

2021-07-27T13:58:37+00:00

Add helper to power on/down device ports and ip, it will be used when support device suspend/resume Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1626340078-29111-12-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: support runtime PM for host mode

2021-07-27T13:58:37+00:00

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 Link: https://lore.kernel.org/r/1626340078-29111-11-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: mtu3: add new helpers for host suspend/resume

2021-07-27T13:58:37+00:00

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 Link: https://lore.kernel.org/r/1626340078-29111-10-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman