linux-toradex.git/drivers/usb/chipidea/core.c, branch v4.4.99

usb: chipidea: Only read/write OTGSC from one place

2017-05-14T11:32:56+00:00

commit f60f8ccd54e03c1afafb2b20ceb029a0eaf7a134 upstream.

With the id and vbus detection done via extcon we need to make
sure we poll the status of OTGSC properly by considering what the
extcon is saying, and not just what the register is saying. Let's
move this hw_wait_reg() function to the only place it's used and
simplify it for polling the OTGSC register. Then we can make
certain we only use the hw_read_otgsc() API to read OTGSC, which
will make sure we properly handle extcon events.

Acked-by: Peter Chen 
Cc: Greg Kroah-Hartman 
Cc: "Ivan T. Ivanov" 
Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect")
Signed-off-by: Stephen Boyd 
Signed-off-by: Peter Chen 
Signed-off-by: Greg Kroah-Hartman

usb: chipidea: move the lock initialization to core file

2016-12-02T08:09:00+00:00

commit a5d906bb261cde5f881a949d3b0fbaa285dcc574 upstream.

This can fix below dump when the lock is accessed at host
mode due to it is not initialized.

[   46.119638] INFO: trying to register non-static key.
[   46.124643] the code is fine but needs lockdep annotation.
[   46.130144] turning off the locking correctness validator.
[   46.135659] CPU: 0 PID: 690 Comm: cat Not tainted 4.9.0-rc3-00079-g4b75f1d #1210
[   46.143075] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[   46.148923] Backtrace:
[   46.151448] [] (dump_backtrace) from [] (show_stack+0x18/0x1c)
[   46.159038]  r7:edf52000
[   46.161412]  r6:60000193
[   46.163967]  r5:00000000
[   46.165035]  r4:c0e25c2c

[   46.169109] [] (show_stack) from [] (dump_stack+0xb4/0xe8)
[   46.176362] [] (dump_stack) from [] (register_lock_class+0x4fc/0x56c)
[   46.184554]  r10:c0e25d24
[   46.187014]  r9:edf53e70
[   46.189569]  r8:c1642444
[   46.190637]  r7:ee9da024
[   46.193191]  r6:00000000
[   46.194258]  r5:00000000
[   46.196812]  r4:00000000
[   46.199185]  r3:00000001

[   46.203259] [] (register_lock_class) from [] (__lock_acquire+0x80/0x10f0)
[   46.211797]  r10:c0e25d24
[   46.214257]  r9:edf53e70
[   46.216813]  r8:ee9da024
[   46.217880]  r7:c1642444
[   46.220435]  r6:edcd1800
[   46.221502]  r5:60000193
[   46.224057]  r4:00000000

[   46.227953] [] (__lock_acquire) from [] (lock_acquire+0x74/0x94)
[   46.235710]  r10:00000001
[   46.238169]  r9:edf53e70
[   46.240723]  r8:edf53f80
[   46.241790]  r7:00000001
[   46.244344]  r6:00000001
[   46.245412]  r5:60000193
[   46.247966]  r4:00000000

[   46.251866] [] (lock_acquire) from [] (_raw_spin_lock_irqsave+0x40/0x54)
[   46.260319]  r7:ee1c6a00
[   46.262691]  r6:c062a570
[   46.265247]  r5:20000113
[   46.266314]  r4:ee9da014

[   46.270393] [] (_raw_spin_lock_irqsave) from [] (ci_port_test_show+0x2c/0x70)
[   46.279280]  r6:eebd2000
[   46.281652]  r5:ee9da010
[   46.284207]  r4:ee9da014

[   46.286810] [] (ci_port_test_show) from [] (seq_read+0x1ac/0x4f8)
[   46.294655]  r9:edf53e70
[   46.297028]  r8:edf53f80
[   46.299583]  r7:ee1c6a00
[   46.300650]  r6:00000001
[   46.303205]  r5:00000000
[   46.304273]  r4:eebd2000
[   46.306850] [] (seq_read) from [] (full_proxy_read+0x54/0x6c)
[   46.314348]  r10:00000000
[   46.316808]  r9:c0a6ad30
[   46.319363]  r8:edf53f80
[   46.320430]  r7:00020000
[   46.322986]  r6:b6de3000
[   46.324053]  r5:ee1c6a00
[   46.326607]  r4:c0248b58

[   46.330505] [] (full_proxy_read) from [] (__vfs_read+0x34/0x118)
[   46.338262]  r9:edf52000
[   46.340635]  r8:c0107fc4
[   46.343190]  r7:00020000
[   46.344257]  r6:edf53f80
[   46.346812]  r5:c039e810
[   46.347879]  r4:ee1c6a00
[   46.350447] [] (__vfs_read) from [] (vfs_read+0x8c/0x11c)
[   46.357597]  r9:edf52000
[   46.359969]  r8:c0107fc4
[   46.362524]  r7:edf53f80
[   46.363592]  r6:b6de3000
[   46.366147]  r5:ee1c6a00
[   46.367214]  r4:00020000
[   46.369782] [] (vfs_read) from [] (SyS_read+0x4c/0xa8)
[   46.376672]  r8:c0107fc4
[   46.379045]  r7:00020000
[   46.381600]  r6:b6de3000
[   46.382667]  r5:ee1c6a00
[   46.385222]  r4:ee1c6a00

[   46.387817] [] (SyS_read) from [] (ret_fast_syscall+0x0/0x1c)
[   46.395314]  r7:00000003
[   46.397687]  r6:b6de3000
[   46.400243]  r5:00020000
[   46.401310]  r4:00020000

Fixes: 26c696c678c4 ("USB: Chipidea: rename struct ci13xxx variables from udc to ci")
Signed-off-by: Peter Chen 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'usb-ci-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

2015-10-23T01:24:38+00:00

Peter writes:

USB Chipidea updates for v4.4-rc1

- Use extcon framework for VBUS and ID detect
- Add imx6sx and imx7d support
- Other small changes

usb: chipidea: Add support for 'phy-clkgate-delay-us' property

2015-10-22T01:24:25+00:00

Add support for the optional 'phy-clkgate-delay-us' property that is
used to describe the delay time between putting PHY into low power mode
and turning off the PHY clock.

Signed-off-by: Li Jun 
Signed-off-by: Fabio Estevam 
Signed-off-by: Peter Chen

usb: chipidea: Use extcon framework for VBUS and ID detect

2015-10-22T01:24:25+00:00

On recent Qualcomm platforms VBUS and ID lines are not routed to
USB PHY LINK controller. Use extcon framework to receive connect
and disconnect ID and VBUS notification.

Signed-off-by: Ivan T. Ivanov 
Signed-off-by: Peter Chen

usb: common: of_usb_get_dr_mode to usb_get_dr_mode

2015-09-27T15:54:31+00:00

By using the unified device property interface, the function
can be made available for all platforms and not just the
ones using DT.

Signed-off-by: Heikki Krogerus 
Signed-off-by: Felipe Balbi

usb: common: of_usb_get_maximum_speed to usb_get_maximum_speed

2015-09-27T15:54:31+00:00

By using the unified device property interface, the function
can be made available for all platforms and not just the
ones using DT.

Signed-off-by: Heikki Krogerus 
Signed-off-by: Felipe Balbi

Merge tag 'usb-ci-v4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

2015-08-14T23:43:09+00:00

Peter writes:

USB: chipidea updates for v4.3-rc1

The main changes are adding several system interfaces for
tuning performance, and each vendors can adjust them according
to their design configurations.

Others are tiny improvements, like more well siTD supports,
USB_DEVICE_A_HNP_SUPPORT supports, etc.

Merge tag 'usb-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

2015-08-14T23:41:11+00:00

Felipe writes:

usb: patches for v4.3 merge window

New support for Allwinne SoC on the MUSB driver has been added to the list of
glue layers. MUSB also got support for building all DMA engines in one binary;
this will be great for distros.

DWC3 now has no trace of dev_dbg()/dev_vdbg() usage. We will rely solely on
tracing to debug DWC3. There was also a fix for memory corruption with EP0 when
maxpacket size transfers are > 512 bytes.

Robert's EP capabilities flags is making EP selection a lot simpler. UDCs are
now required to set these flags up when adding endpoints to the framework.

Other than these, we have the usual set of miscelaneous cleanups and minor
fixes.

Signed-off-by: Felipe Balbi

usb: chipidea: add tx/rx burst size configuration interface

2015-08-14T02:03:58+00:00

The user can adjust it through dts or platform data

Signed-off-by: Peter Chen