Commit Graph

693024 Commits

Author SHA1 Message Date
Johan Hovold
706d61b243 USB: musb: dsps: add explicit runtime resume at suspend
The musb_dsps driver is special in that the parent (glue) device's
driver is accessing registers mapped by the child. The clock is however
shared and is managed by the grandparent device.

Since commit 869c597829 ("usb: musb: dsps: add support for suspend and
resume") the dsps driver has been accessing these registers as part of
suspend and resume.

The parent driver obviously cannot runtime resume the child during
system suspend and is currently relying on the fact that the child will
be RPM_ACTIVE throughout suspend. The suspend implementation also makes
sure to check that the child is indeed present (and hence the clock
enabled) before accessing the registers.

Let's add an explicit runtime resume of the glue device itself to enable
the clock before doing the register accesses in case these assumptions ever
change (i.e. if the child is left runtime suspended).

Note that the glue-timer cancellation is moved after the child-presence
check to keep error handling simple. This should be fine as the timer is
not setup until the controller is being registered and at that time
glue->musb and its driver data have already been initialised.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 10:51:56 +02:00
Johan Hovold
082df8be45 USB: musb: fix external abort on suspend
Make sure that the controller is runtime resumed when system suspending
to avoid an external abort when accessing the interrupt registers:

  Unhandled fault: external abort on non-linefetch (0x1008) at 0xd025840a
  ...
  [<c05481a4>] (musb_default_readb) from [<c0545abc>] (musb_disable_interrupts+0x84/0xa8)
  [<c0545abc>] (musb_disable_interrupts) from [<c0546b08>] (musb_suspend+0x38/0xb8)
  [<c0546b08>] (musb_suspend) from [<c04a57f8>] (platform_pm_suspend+0x3c/0x64)

This is easily reproduced on a BBB by enabling the peripheral port only
(as the host port may enable the shared clock) and keeping it
disconnected so that the controller is runtime suspended. (Well, you
would also need to the not-yet-merged am33xx-suspend patches by Dave
Gerlach to be able to suspend the BBB.)

This is a regression that was introduced by commit 1c4d0b4e18 ("usb:
musb: Remove pm_runtime_set_irq_safe") which allowed the parent glue
device to runtime suspend and thereby exposed a couple of older issues:

Register accesses without explicitly making sure the controller is
runtime resumed during suspend was first introduced by commit c338412b5d
("usb: musb: unconditionally save and restore the context on suspend")
in 3.14.

Commit a1fc1920aa ("usb: musb: core: make sure musb is in RPM_ACTIVE on
resume") later started setting the RPM status to active during resume,
and this was also implicitly relying on the parent always being active.
Since commit 71723f9546 ("PM / runtime: print error when activating a
child to unactive parent") this now also results in the following
warning:

  musb-hdrc musb-hdrc.0: runtime PM trying to activate child device
    musb-hdrc.0 but parent (47401400.usb) is not active

This patch has been verified on 4.13-rc2, 4.12 and 4.9 using a BBB
(the dsps glue would always be active also in 4.8).

Fixes: c338412b5d ("usb: musb: unconditionally save and restore the context on suspend")
Fixes: a1fc1920aa ("usb: musb: core: make sure musb is in RPM_ACTIVE on resume")
Fixes: 1c4d0b4e18 ("usb: musb: Remove pm_runtime_set_irq_safe")
Cc: stable <stable@vger.kernel.org>	# 4.8+
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 10:51:55 +02:00
Bin Liu
55aad53fb3 usb: musb: fix endpoint fifo allocation for 4KB fifo memory
The fifo memory allocation in mode_2_cfg[] doesn't utilize all the 4KB
memory.

Increse some endpoint fifo buffers to fully use all the 4KB memory. Now
we can support more webcam usecases on DA8xx.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 10:51:55 +02:00
Bin Liu
1bff25eafa usb: musb: print an error message when high bandwidth is unsupported
There are multiple places in usb core or controller driver which returns
-EMSGSIZE when a class driver queueing urb failed, so the "Message too
long" log doesn't help much for understanding the error.

Let the musb driver to specifically print a error message when
musb_urb_enqueue() returns -EMSGSIZE.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 10:51:55 +02:00
Bin Liu
a2f656060b usb: musb: print an error message when hwep alloc failed
Print an error message with qh maxpacket size and hb_mult when hwep
allocation failed, so we have a better idea why it is failed.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 10:51:55 +02:00
Bin Liu
0ccbadafb4 usb: musb: add helper function musb_ep_xfertype_string
Add helper function musb_ep_xfertype_string() to return the ep transfer
type string.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28 10:51:55 +02:00
Greg Kroah-Hartman
17e15f6fbc Chipidea changes for v4.14-rc1
- Add chipidea support at Nvidia SoCs
 - Improvement for extcon support
 - Some code refines
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Merge tag 'usb-ci-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

Peter writes:

Chipidea changes for v4.14-rc1
- Add chipidea support at Nvidia SoCs
- Improvement for extcon support
- Some code refines
2017-08-28 10:50:22 +02:00
Arnd Bergmann
e593beaf60 phy: ralink: fix 64-bit build warning
Casting between an 'int' and a pointer causes a warning on
64-bit architectures in compile-testing this driver:

drivers/phy/ralink/phy-ralink-usb.c: In function 'ralink_usb_phy_probe':
drivers/phy/ralink/phy-ralink-usb.c:195:13: error: cast from pointer to
integer of different size [-Werror=pointer-to-int-cast]

This changes the code to cast to uintptr_t instead. This is
guaranteed to do what we want on all architectures and avoids
the warning.

Fixes: 2411a736ff ("phy: ralink-usb: add driver for Mediatek/Ralink")
Acked-by: John Crispin <john@phrozen.org>
Tested-by Harvey Hunt <harvey.hunt@imgtec.com>
Reviewed-by Harvey Hunt <harvey.hunt@imgtec.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-24 17:26:50 -07:00
Thierry Reding
dfebb5f43a usb: chipidea: Add support for Tegra20/30/114/124
All of these Tegra SoC generations have a ChipIdea UDC IP block that can
be used for device mode communication with a host. Implement rudimentary
support that doesn't allow switching between host and device modes.

Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Thierry Reding <treding@nvidia.com>
[digetx@gmail.com: rebased patches and added DMA alignment quirk for Tegra20]
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-08-24 17:40:52 +08:00
Dmitry Osipenko
581821ae7f usb: chipidea: udc: Support SKB alignment quirk
NVIDIA Tegra20 UDC can't cope with unaligned DMA and require a USB gadget
quirk that avoids SKB buffer alignment to be set in order to make Ethernet
Gadget working. Later Tegra generations do not require that quirk. Let's
add a new platform data flag that allows to enable USB gadget quirk for
platforms that require it.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
2017-08-24 17:40:42 +08:00
Greg Kroah-Hartman
cad2be2997 phy: for 4.14
*) Add USB PHY driver for Ralink SoC
  *) Make phy-mt65xx-usb3 driver support PCIe and SATA phy
  *) Add mediatek directory and rename phy-mt65xx-usb3 to phy-mtk-tphy.c
     since it now supports USB3.0, PCIe and SATA PHYs
  *) Make sun4i-usb-phy driver support USB PHYs for A83T SoC
  *) Make phy-qcom-qmp driver support USB PHYs for IPQ8074 SoC
  *) Make rockchip-inno-usb2 driver support usb2-phy for rv1108 SoC
  *) Minor fixes in phy drivers
 
 Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'phy-for-4.14_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

Kishon writes:

phy: for 4.14

 *) Add USB PHY driver for Ralink SoC
 *) Make phy-mt65xx-usb3 driver support PCIe and SATA phy
 *) Add mediatek directory and rename phy-mt65xx-usb3 to phy-mtk-tphy.c
    since it now supports USB3.0, PCIe and SATA PHYs
 *) Make sun4i-usb-phy driver support USB PHYs for A83T SoC
 *) Make phy-qcom-qmp driver support USB PHYs for IPQ8074 SoC
 *) Make rockchip-inno-usb2 driver support usb2-phy for rv1108 SoC
 *) Minor fixes in phy drivers

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 13:20:12 -07:00
Greg Kroah-Hartman
34a0036748 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.
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Merge tag 'usb-for-v4.14' of 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.
2017-08-22 13:16:06 -07:00
Dan Carpenter
d9c51f4c53 phy: brcm-sata: fix a timeout test in init
We want to timeout with try set to zero so this should be a pre-op
instead of post-op.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:27 +05:30
Dan Carpenter
aea430ee0c phy: cpcap-usb: remove a stray tab
This line was indented further that it should have been.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:26 +05:30
Dan Carpenter
df674efa32 phy: phy-twl4030-usb: silence an uninitialized variable warning
The "check" variable isn't necessarily initialized when we print it out
in the debugging messages.  It's a pretty haphazard affair and it
doesn't matter very much what we initialize "check" to.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:25 +05:30
Shawn Lin
5e39c6cf57 phy: rockchip-typec: remove unused dfp variable
In order to silent the 'W=1' compile warning:

drivers/phy/rockchip/phy-rockchip-typec.c: In function 'tcphy_get_mode':
drivers/phy/rockchip/phy-rockchip-typec.c:625:7: warning: variable 'dfp'
set but not used [-Wunused-but-set-variable]

Cc: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:24 +05:30
Frank Wang
fc938810d9 phy: rockchip-inno-usb2: add support of usb2-phy for rv1108 SoCs
This adds support usb2-phy for rv1108 SoCs and amend phy Documentation.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:23 +05:30
Frank Wang
9c1712d5ce dt-bindings: phy-rockchip-inno-usb2: add otg-mux interrupt
Add otg-mux property to support multiplexed interrupt in otg-port
on some Rockchip SoC (e.g RV1108).

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:22 +05:30
Frank Wang
0983e2abc8 phy: rockchip-inno-usb2: add support for otg-mux interrupt
The otg-id/otg-bvalid/linestate interrupts are multiplexed together
in otg-port on some Rockchip SoC (e.g RV1108), this patch add support
for it.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:21 +05:30
Frank Wang
c7527e07f0 dt-bindings: phy-rockchip-inno-usb2: add rockchip,usbgrf property
Add rockchip,usbgrf property to support the registers of usb-phy
that are distributed in grf and usbgrf on some special Rockchip
SoCs (e.g RV1108).

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:20 +05:30
Frank Wang
1543645c31 phy: rockchip-inno-usb2: add support for rockchip,usbgrf property
The registers of usb-phy are distributed in grf and usbgrf on some
Rockchip SoCs (e.g RV1108), this patch add a new rockchip,usbgrf
property to support this companion grf design.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:19 +05:30
Chen-Yu Tsai
4b63743cdb phy: sun4i-usb: Support A83T USB PHYs
The A83T has 3 USB PHYs, 1 for OTG, 1 for standard USB, 1 for USB HSIC.
The phy initialization procedure is very different from other SoCs, but
the PMU bits are the same, with additional bits for HSIC.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:18 +05:30
Chen-Yu Tsai
f0152c58c6 phy: sun4i-usb: Support secondary clock for HSIC PHY
On the Allwinner A83T SoC, the last USB PHY is an HSIC PHY. It requires
two clocks instead of one.

On all Allwinner SoCs that share the common USB PHY design supported by
the phy-sun4i-usb driver, the first PHY is always tied to OTG, and there
is at most one HSIC PHY, typically the last.

In this patch we take advantage of these known constraints and store an
index in the compatible-string-related config structure describing which
PHY is HSIC, needing the extra hsic_12M clock.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:17 +05:30
Chen-Yu Tsai
1af5564644 dt-bindings: phy: sun4i-usb-phy: Add compatible string for A83T
The A83T has 3 USB PHYs, 1 for OTG, 1 for standard USB, 1 for USB HSIC.

Add a compatible string for it, and describe the needed properties.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:11:09 +05:30
Chen-Yu Tsai
7a1de06302 dt-bindings: phy: sun4i-usb-phy: Add property descriptions for H3
The Allwinner H3 SoC has 4 USB PHYs, so it needs four sets of pmu
regions, clocks, resets, and optional vbus properties. These were
not described when the H3 compatible string was added.

Fixes: 626a630e00 ("phy-sun4i-usb: Add support for the host usb-phys
		      found on the H3 SoC")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-22 10:10:43 +05:30
John Crispin
2411a736ff phy: ralink-usb: add driver for Mediatek/Ralink
Add a driver to setup the USB phy on Mediatek/Ralink SoCs.
The driver sets up power and host mode, but also needs to
configure PHY registers for the MT7628 and MT7688.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 14:02:23 +05:30
John Crispin
1cc81efe8e dt-bindings: phy: Add bindings for ralink-usb PHY
Add a binding for the USB phy on Mediatek/Ralink SoCs.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 14:02:22 +05:30
Chunfeng Yun
e0ed408260 phy: samsung: use of_device_get_match_data()
reduce the boilerplate code to get the specific data

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:52 +05:30
Chunfeng Yun
cd4ec4b03d phy: phy-mt65xx-usb3: add mediatek directory and rename file
The driver is actually for T-PHY which supports USB3.0, PCIe and SATA,
and supports more SoCs now, but not just only for series of mt65xx SoCs,
so the name of file, data struct, functions etc with 'mt65xx' may cause
misunderstanding when new SoCs are supported. Here rename them to reflect
the real functions and also enhance readability.

And also update MAINTAINERS file to reflect the correct driver

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:51 +05:30
Chunfeng Yun
7c6eac2386 dt-bindings: phy-mt65xx-usb: supports PCIe, SATA and rename file
add support for PCIe and SATA, also add some new compatibles.

due to phy-mt65xx-usb.txt holds the bindings for all mediatek SoCs
with T-PHY controller, change the name to phy-mtk-tphy.txt to
reflect that.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:50 +05:30
Ryder Lee
4ab26cb66a phy: phy-mt65xx-usb3: add SATA PHY support
This patch adds SATA setting part.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:49 +05:30
Ryder Lee
44a6d6ce64 phy: phy-mt65xx-usb3: add PCIe PHY support
This patch adds PCIe PHY setting part.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:48 +05:30
Roger Quadros
325ce0fe58 phy: ti-pipe3: Use TRM recommended settings for SATA DPLL
The AM572x Technical Reference Manual, SPRUHZ6H,
Revised November 2016 [1], shows recommended settings for the
SATA DPLL in Table 26-8. DPLL CLKDCOLDO Recommended Settings.

Use those settings in the driver. The TRM does not show
a value for 20MHz SYS_CLK so we use something close to the
26MHz setting.

[1] - http://www.ti.com/lit/ug/spruhz6h/spruhz6h.pdf

Signed-off-by: Roger Quadros <rogerq@ti.com>
[nsekhar@ti.com: add exact TRM version to commit text]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:47 +05:30
Vivek Gautam
8387c576b7 phy: qcom-qmp: Fix failure path in phy_init functions
Fixing the clk enable failure path in qcom_qmp_phy_init()
and cleanup the reset control deassertion failure path in
qcom_qmp_phy_com_init().

Fixes: e78f3d15e1 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")

Cc: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:46 +05:30
Varadarajan Narayanan
eef243d04b phy: qcom-qmp: Add support for IPQ8074
Add definitions required to enable QMP phy support for IPQ8074.

Signed-off-by: smuthayy <smuthayy@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:45 +05:30
Varadarajan Narayanan
2a9316b046 phy: qcom-qmp: Fix phy pipe clock name
Presently, the phy pipe clock's name is assumed to be either
usb3_phy_pipe_clk_src or pcie_XX_pipe_clk_src (where XX is the
phy lane's number). However, this will not work if an SoC has
more than one instance of the phy. Hence, instead of assuming
the name of the clock, fetch it from the DT.

Reviewed-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:44 +05:30
Varadarajan Narayanan
2d66eab183 dt-bindings: phy: qmp: Add support for QMP phy in IPQ8074
IPQ8074 uses QMP PHY controller that provides support to PCIe and
USB. Adding DT binding information for the same.

Reviewed-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:59:19 +05:30
Varadarajan Narayanan
e88432e728 dt-bindings: phy: qmp: Add output-clock-names
The PHY outputs a clock that will act as the parent for
the PHY's pipe clock. Add the name of this clock to the
lane's DT node.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-08-20 13:58:30 +05:30
Dmitry Osipenko
0852659ef0 usb: gadget: f_ncm/u_ether: Move 'SKB reserve' quirk setup to u_ether
That quirk is required to make USB Ethernet gadget working on HW that
can't cope with unaligned DMA. For some reason only f_ncm sets up that
quirk, let's setup it directly in u_ether so other network models would
have that quirk applied as well. All network models have been tested with
ChipIdea UDC driver on NVIDIA Tegra20 SoC that require DMA to be aligned.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-18 12:29:10 +03:00
Stephen Warren
daa35bd956 usb: gadget: serial: fix oops when data rx'd after close
When the gadget serial device has no associated TTY, do not pass any
received data into the TTY layer for processing; simply drop it instead.
This prevents the TTY layer from calling back into the gadget serial
driver, which will then crash in e.g. gs_write_room() due to lack of
gadget serial device to TTY association (i.e. a NULL pointer dereference).

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-18 12:28:50 +03:00
Alan Stern
afd7fd81f2 USB: Gadget core: fix inconsistency in the interface tousb_add_gadget_udc_release()
The usb_add_gadget_udc_release() routine in the USB gadget core will
sometimes but not always call the gadget's release function when an
error occurs.  More specifically, if the struct usb_udc allocation
fails then the release function is not called, and for other errors it
is.

As a result, users of this routine cannot know whether they need to
deallocate the memory containing the gadget structure following an
error.  This leads to unavoidable memory leaks or double frees.

This patch fixes the problem by splitting the existing
device_register() call into device_initialize() and device_add(), and
doing the udc allocation in between.  That way, even if the allocation
fails it is still possible to call device_del(), and so the release
function will be always called following an error.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-18 10:26:13 +03:00
Franklin S Cooper Jr
c37a9cd51d dt-bindings: usb: keystone-usb: Update bindings pm and clocks properties
Update various properties to properly indicate their requirement depending
on the SoC.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-08-17 15:32:13 +03:00
Mathias Nyman
a85c0f8db3 xhci: rework bus_resume and check ports are suspended before resuming them.
bus_resume() tried to resume the same ports the bus_suspend()
suspeded. This caused PLC timeouts in case a suspended device disconnected
and was not in a resumable state at bus_resume().

Add a check to make sure the link state is either U3 or resuming
before actually resuming the link.

At the same time do some other changes such as make sure we remove
wake on connect/disconnect/overcurrent also for the resuming ports,
and avoid extra portsc port register writes.

This improves resume time with 10ms in those PLC timeout cases where
devices disconnect at suspend/resume cycle.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Mathias Nyman
74072bae88 usb: Increase root hub reset signaling time to prevent retry
Save 80ms device enumeration time by increasing root hub port reset time

The 50ms reset signaling time is not enough for most root hub ports.
Increasing the reset time to 60ms allows host controllers to finish port
reset and removes a retry causing an extra 50ms delay.

The USB 2 specification requires "at least 50ms" for driving root
port reset. The current msleep is exactly 50ms which may not be
enough if there are any delays between writing the reset bit to host
controller portsc register and phy actually driving reset.

On Haswell, Skylake and Kabylake xHC port reset took in average 52-59ms

The 80ms improvement comes from (40ms * 2 port resets) save at enumeration
for each device connected to a root hub port.

more details about root port reset in USB2 section 7.1.7.5:.
"Software must ensure that resets issued to the root ports drive reset
long enough to overwhelm any concurrent resume attempts by downstream
devices. It is required that resets from root ports have a duration of
at least 50 ms (TDRSTR).

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Mathias Nyman
8ca1358bd9 xhci: add port status tracing
Track the port status in a human readble way each time we get a
port status change event

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Mathias Nyman
76a0f32b28 xhci: rename temp and temp1 variables
temp and temp1 variables are used for port status (portsc) and
command register. Give them more descriptive names

No functional changes

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Mathias Nyman
2e77a8253d xhci: Add port status decoder for tracing purposes
Add PORTSC Port status and control register decoder to
show human readable tracing of portsc register

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Mathias Nyman
7344ee328c xhci: add definitions for all port link states
Add definitions for all port link states defined in xhci
specification for PORTSC register.

Will be needed for human readable port status tracing

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Yoshihiro Shimoda
00ad66ea52 usb: host: xhci: rcar: Add support for R-Car H3 ES2.0
This patch adds support for R-Car H3 ES2.0. Since this SoC revision
(or later) should use the V3 firmware, the driver needs to check
the revision via soc_device_match().

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00
Yoshihiro Shimoda
4dd5186472 usb: host: xhci: plat: re-fact xhci_plat_priv for R-Car Gen3
Since the firmware_name is decided by xhci-rcar.c on R-Car Gen3 now,
this patch removes 2 things:
 - Remove struct xhci_plat_priv xhci_plat_renesas_rcar_r8a7796.
 - Remoce .firmware_name from xhci_plat_renesas_rcar_gen3.

The behavior is the same as before.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-16 15:26:26 -07:00