linux.git/drivers/usb/musb, branch v5.5

usb: musb: Disable pullup at init

2020-01-08T16:34:17+00:00

The pullup may be already enabled before the driver is initialized. This
happens for instance on JZ4740.

It has to be disabled at init time, as we cannot guarantee that a gadget
driver will be bound to the UDC.

Signed-off-by: Paul Cercueil 
Suggested-by: Bin Liu 
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu 
Link: https://lore.kernel.org/r/20200107152625.857-3-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman

usb: musb: fix idling for suspend after disconnect interrupt

2020-01-08T16:34:17+00:00

When disconnected as USB B-device, suspend interrupt should come before
diconnect interrupt, because the DP/DM pins are shorter than the
VBUS/GND pins on the USB connectors. But we sometimes get a suspend
interrupt after disconnect interrupt. In that case we have devctl set to
99 with VBUS still valid and musb_pm_runtime_check_session() wrongly
thinks we have an active session. We have no other interrupts after
disconnect coming in this case at least with the omap2430 glue.

Let's fix the issue by checking the interrupt status again with
delayed work for the devctl 99 case. In the suspend after disconnect
case the devctl session bit has cleared by then and musb can idle.
For a typical USB B-device connect case we just continue with normal
interrupts.

Fixes: 467d5c980709 ("usb: musb: Implement session bit based runtime PM for musb-core")

Cc: Merlijn Wajer 
Cc: Pavel Machek 
Cc: Sebastian Reichel 
Cc: stable@vger.kernel.org
Signed-off-by: Tony Lindgren 
Signed-off-by: Bin Liu 
Link: https://lore.kernel.org/r/20200107152625.857-2-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman

usb: musb: dma: Correct parameter passed to IRQ handler

2019-12-30T18:54:57+00:00

The IRQ handler was passed a pointer to a struct dma_controller, but the
argument was then casted to a pointer to a struct musb_dma_controller.

Fixes: 427c4f333474 ("usb: struct device - replace bus_id with dev_name(), dev_set_name()")
Signed-off-by: Paul Cercueil 
Tested-by: Artur Rojek 
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu 
Link: https://lore.kernel.org/r/20191216161844.772-2-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman

usb: musb: jz4740: Silence error if code is -EPROBE_DEFER

2019-12-30T18:54:57+00:00

Avoid printing any error message if the error code is -EPROBE_DEFER.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Link: https://lore.kernel.org/r/20191216162432.1256-1-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman

usb: musb: create debugfs directory under usb root

2019-11-21T17:20:29+00:00

Now the USB gadget subsystem can use the USB debugfs root directory,
so move musb's directory from the root of the debugfs filesystem into
the root of usb

Signed-off-by: Chunfeng Yun 
Link: https://lore.kernel.org/r/1574232183-5760-1-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman

usb: musb: dsps: create debugfs directory under usb root

2019-11-14T03:16:35+00:00

Now the USB gadget subsystem can use the USB debugfs root directory,
so move dsps's directory from the root of the debugfs filesystem into
the root of usb

Signed-off-by: Chunfeng Yun 
Link: https://lore.kernel.org/r/1573541519-28488-6-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman

usb: Spelling s/enpoint/endpoint/

2019-11-04T14:53:00+00:00

Fix misspellings of "endpoint".

Signed-off-by: Geert Uytterhoeven 
Acked-by: Li Yang 
Acked-by: Minas Harutyunyan 
Link: https://lore.kernel.org/r/20191024152833.30698-1-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman

usb: musb: musb_gadget.c: Remove unused variable

2019-10-04T12:15:13+00:00

Remove unused variable status from musb_gadget_disable().

Signed-off-by: Saurav Girepunje 
Link: https://lore.kernel.org/r/20191002143241.GA11615@saurav
Signed-off-by: Greg Kroah-Hartman

USB: musb: use devm_platform_ioremap_resource() to simplify code

2019-10-04T12:09:41+00:00

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.

Reported-by: Hulk Robot 
Signed-off-by: YueHaibing 
Link: https://lore.kernel.org/r/20190904084427.18532-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman

usb: add a HCD_DMA flag instead of guestimating DMA capabilities

2019-08-21T17:03:35+00:00

The usb core is the only major place in the kernel that checks for
a non-NULL device dma_mask to see if a device is DMA capable.  This
is generally a bad idea, as all major busses always set up a DMA mask,
even if the device is not DMA capable - in fact bus layers like PCI
can't even know if a device is DMA capable at enumeration time.  This
leads to lots of workaround in HCD drivers, and also prevented us from
setting up a DMA mask for platform devices by default last time we
tried.

Replace this guess with an explicit HCD_DMA that is set by drivers that
appear to have DMA support.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20190816062435.881-4-hch@lst.de
Signed-off-by: Greg Kroah-Hartman