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1.Modify the macro definition to unify "#define USBPCR_XXXX n"
into the "#define USBPCR_XXXX (n << USBPCR_XXXX_LSB)" style,
so as to unify the code style in the "jz4770_phy_init()" and
simplify the code.
2.Remove unused macro definitions to simplify the code.
Tested-by: 周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Suggested-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Link: https://lore.kernel.org/r/20200710191842.32561-1-grandmaster@al2klimov.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This file has a HUGE debugging sysfs file that spews out a lot of
information all at once, which violates the one-value-per-file rule for
sysfs. If this is really needed, it should go into debugfs, but given
the age of this driver, I strongly doubt anyone is using it anymore.
So just remove the file entirely, it was never documented, so obviously,
no one actually needed it :)
Cc: Felipe Balbi <balbi@kernel.org>
Reviewed-by: Ran Wang <ran.wang_1@nxp.com>
Link: https://lore.kernel.org/r/20200702072914.1072878-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kerneldoc expects arg descriptions to be in the format '@.*: '. If either
the '@' or the ':' is omitted then kerneldoc complains that the description
is missing. Add the missing ':'s here.
Also provide a new description for 'event'.
Fixes the following kernel build W=1 warnings:
drivers/usb/phy/phy.c:106: warning: Function parameter or member 'work' not described in 'usb_phy_notify_charger_work'
drivers/usb/phy/phy.c:172: warning: Function parameter or member 'nb' not described in 'usb_phy_get_charger_type'
drivers/usb/phy/phy.c:172: warning: Function parameter or member 'state' not described in 'usb_phy_get_charger_type'
drivers/usb/phy/phy.c:172: warning: Function parameter or member 'data' not described in 'usb_phy_get_charger_type'
drivers/usb/phy/phy.c:194: warning: Function parameter or member 'usb_phy' not described in 'usb_phy_set_charger_current'
drivers/usb/phy/phy.c:194: warning: Function parameter or member 'mA' not described in 'usb_phy_set_charger_current'
drivers/usb/phy/phy.c:244: warning: Function parameter or member 'usb_phy' not described in 'usb_phy_get_charger_current'
drivers/usb/phy/phy.c:244: warning: Function parameter or member 'min' not described in 'usb_phy_get_charger_current'
drivers/usb/phy/phy.c:244: warning: Function parameter or member 'max' not described in 'usb_phy_get_charger_current'
drivers/usb/phy/phy.c:281: warning: Function parameter or member 'usb_phy' not described in 'usb_phy_set_charger_state'
drivers/usb/phy/phy.c:281: warning: Function parameter or member 'state' not described in 'usb_phy_set_charger_state'
drivers/usb/phy/phy.c:427: warning: Function parameter or member 'dev' not described in 'devm_usb_get_phy'
drivers/usb/phy/phy.c:427: warning: Function parameter or member 'type' not described in 'devm_usb_get_phy'
drivers/usb/phy/phy.c:456: warning: Function parameter or member 'type' not described in 'usb_get_phy'
drivers/usb/phy/phy.c:500: warning: Function parameter or member 'dev' not described in 'devm_usb_get_phy_by_node'
drivers/usb/phy/phy.c:500: warning: Function parameter or member 'node' not described in 'devm_usb_get_phy_by_node'
drivers/usb/phy/phy.c:500: warning: Function parameter or member 'nb' not described in 'devm_usb_get_phy_by_node'
drivers/usb/phy/phy.c:558: warning: Function parameter or member 'dev' not described in 'devm_usb_get_phy_by_phandle'
drivers/usb/phy/phy.c:558: warning: Function parameter or member 'phandle' not described in 'devm_usb_get_phy_by_phandle'
drivers/usb/phy/phy.c:558: warning: Function parameter or member 'index' not described in 'devm_usb_get_phy_by_phandle'
drivers/usb/phy/phy.c:590: warning: Function parameter or member 'dev' not described in 'devm_usb_put_phy'
drivers/usb/phy/phy.c:590: warning: Function parameter or member 'phy' not described in 'devm_usb_put_phy'
drivers/usb/phy/phy.c:627: warning: Function parameter or member 'type' not described in 'usb_add_phy'
drivers/usb/phy/phy.c:721: warning: Function parameter or member 'event' not described in 'usb_phy_set_event'
Cc: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-2-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the function tegra_usb_phy_probe(), if usb_add_phy_dev() failed,
the return value will be given to err, and if usb_add_phy_dev() succeed,
the return value will be zero. Thus it is unnecessary to repeated check
here.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
A call to 'regulator_get()' is hidden in 'twl6030_usb_ldo_init()'. A
corresponding put must be performed in the error handling path, as
already done in the remove function.
While at it, also move a 'free_irq()' call in the error handling path in
order to be consistent.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
The driver uses only GPIO Descriptor Consumer Interface so include
proper header. This fixes compile test failures (e.g. on i386):
drivers/usb/phy/phy-tegra-usb.c: In function ‘ulpi_phy_power_on’:
drivers/usb/phy/phy-tegra-usb.c:695:2: error:
implicit declaration of function ‘gpiod_set_value_cansleep’ [-Werror=implicit-function-declaration]
drivers/usb/phy/phy-tegra-usb.c: In function ‘tegra_usb_phy_probe’:
drivers/usb/phy/phy-tegra-usb.c:1167:11: error:
implicit declaration of function ‘devm_gpiod_get_from_of_node’ [-Werror=implicit-function-declaration]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/1583234960-24909-1-git-send-email-krzk@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tools like Coccinelle may erroneously recommend to use the
devm_platform_ioremap_resource() API for the registers mapping because
these tools are not aware about the implementation details of the driver.
Let's add a clarifying comments to the code, which should help to stop
future attempts to break the driver.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20200202224259.29187-1-digetx@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Instead of using the legacy GPIO API and keeping track on
polarity inversion semantics in the driver, switch to use
GPIO descriptors for this driver and change all consumers
in the process.
This makes it possible to retire platform data completely:
the only remaining platform data member was "wakeup" which
was intended to make the vbus interrupt wakeup capable,
but was not set by any users and thus remained unused. VBUS
was not waking any devices up. Leave a comment about it so
later developers using the platform can consider setting it
to always enabled so plugging in USB wakes up the platform.
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Sylwester Nawrocki <snawrocki@kernel.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200123155013.93249-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The last user of the phy generic platform data was
deleted in commit 1e041b6f31
("usb: dwc3: exynos: Remove dead code"). So get rid of
the platform data, which rids us of another consumer of
the legacy GPIO API at the same time. Make sure we
only inlcude <linux/gpio/consumer.h> which is all we use.
Alter the usb_phy_gen_create_phy() function prototype to
not pass any platform data as this is just hardcoded to
NULL at all locations calling it in the kernel.
Move the devm_gpiod_get* calls out of the if (of_node)
parenthesis, as these calls are generic and do not depend
on device tree, they are used by any hardware description.
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Generic PHY provides init/shutdown callbacks which allow USB-host drivers
to abstract PHY's hardware management in a common way. This change allows
to remove Tegra-specific PHY handling from the ChipIdea driver.
Note that ChipIdea's driver shall be changed at the same time because it
turns PHY ON without the PHY's initialization and this doesn't work now,
resulting in a NULL dereference of phy->freq because it's set during of
the PHY's initialization.
Acked-by: Peter Chen <peter.chen@nxp.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200106013416.9604-6-digetx@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The PHY driver should keep track of the enable state, otherwise enable
refcount is screwed if USB driver tries to enable PHY when it is already
enabled. This will be the case for ChipIdea and Tegra EHCI drivers once
PHY driver will gain support for the init/shutdown callbacks.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200106013416.9604-5-digetx@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
AB8505 supports an "UART carkit mode" which makes UART accessible
through the USB connector. Upon detection of the UART cable,
this mode has to be manually enabled by:
1. Turning on the PHY in peripheral mode
2. Reconfiguring PHY/pins to route UART signals to USB pins
At the moment, we do not handle the UART link statuses at all,
which means that UART stops working as soon as phy-ab8500-usb is loaded
(since we disable the PHY after initialization).
Keeping UART working if the cable is inserted before turning on the device
is quite simple: In this case, early boot firmware has already set up
the necessary PHY/pin configuration. The presence of the UART cable
is reported by a special value in the USB link status register.
We can check for that value in ab8505_usb_link_status_update()
and set the PHY back to peripheral mode to restore UART.
(Note: This will result in some minor garbage since we still
temporarily disable the PHY during initialization...)
Fully implementing this feature is more complicated:
For some reason, AB8505 does not update UART link status after bootup.
Regular USB cables work fine, but the link status register does not change
its state if an UART cable is inserted/removed.
It seems likely that the hardware is not actually capable of detecting
UART cables autonomously. In addition to the USB link status register,
implementations in the vendor kernel also manually measure
the ID resistance to detect additional cable types. For UART cables,
the USB link status register might simply reflect the PHY configuration
instead of the actual link status.
Implementing that functionality requires significant additions,
so for now just implement the simple case. This allows using UART
when inserting the cable before turning on the device.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20191218203450.71037-1-stephan@gerhold.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Felipe writes:
USB: Changes for v5.4 merge window
With only 45 non-merge commits, we have a small merge window from the
Gadget perspective.
The biggest change here is the addition of the Cadence USB3 DRD
Driver. All other changes are small, non-critical fixes or smaller new
features like the improvement to BESL handling in dwc3.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* tag 'usb-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (45 commits)
usb: gadget: net2280: Add workaround for AB chip Errata 11
usb: gadget: net2280: Move all "ll" registers in one structure
usb: dwc3: gadget: Workaround Mirosoft's BESL check
usb:cdns3 Fix for stuck packets in on-chip OUT buffer.
usb: cdns3: Add Cadence USB3 DRD Driver
usb: common: Simplify usb_decode_get_set_descriptor function.
usb: common: Patch simplify usb_decode_set_clear_feature function.
usb: common: Separated decoding functions from dwc3 driver.
dt-bindings: add binding for USBSS-DRD controller.
usb: gadget: composite: Set recommended BESL values
usb: dwc3: gadget: Set BESL config parameter
usb: dwc3: Separate field holding multiple properties
usb: gadget: Export recommended BESL values
usb: phy: phy-fsl-usb: Make structure fsl_otg_initdata constant
usb: udc: lpc32xx: silence fall-through warning
usb: dwc3: meson-g12a: fix suspend resume regulator unbalanced disables
usb: udc: lpc32xx: remove set but not used 3 variables
usb: gadget: udc: core: Fix segfault if udc_bind_to_driver() for pending driver fails
usb: dwc3: st: Add of_dev_put() in probe function
usb: dwc3: st: Add of_node_put() before return in probe function
...
Static structure fsl_otg_initdata, of type fsl_otg_config, is used only
once, when the value of its field otg_port is assigned to another
variable. As fsl_otg_initdata.otg_port is of type u8, any changes to
its copy do not affect the original, and fsl_otg_initdata itself is
never modified. Hence make fsl_otg_initdata constant to protect it from
unintended modification.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.
// <smpl>
@@
expression ret;
struct platform_device *E;
@@
ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);
if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>
While we're here, remove braces on if statements that only have one
statement (manually).
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20190730181557.90391-47-swboyd@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mark switch cases where we are expecting to fall through.
This patch fixes the following warnings:
drivers/usb/phy/phy-ab8500-usb.c: In function 'ab8500_usb_link_status_update':
drivers/usb/phy/phy-ab8500-usb.c:424:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
event = UX500_MUSB_RIDB;
~~~~~~^~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-ab8500-usb.c:425:2: note: here
case USB_LINK_NOT_CONFIGURED_8500:
^~~~
drivers/usb/phy/phy-ab8500-usb.c:440:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
event = UX500_MUSB_RIDC;
~~~~~~^~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-ab8500-usb.c:441:2: note: here
case USB_LINK_STD_HOST_NC_8500:
^~~~
drivers/usb/phy/phy-ab8500-usb.c:459:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
event = UX500_MUSB_RIDA;
~~~~~~^~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-ab8500-usb.c:460:2: note: here
case USB_LINK_HM_IDGND_8500:
^~~~
drivers/usb/phy/phy-ab8500-usb.c: In function 'ab8505_usb_link_status_update':
drivers/usb/phy/phy-ab8500-usb.c:332:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
event = UX500_MUSB_RIDB;
~~~~~~^~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-ab8500-usb.c:333:2: note: here
case USB_LINK_NOT_CONFIGURED_8505:
^~~~
drivers/usb/phy/phy-ab8500-usb.c:352:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
event = UX500_MUSB_RIDC;
~~~~~~^~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-ab8500-usb.c:353:2: note: here
case USB_LINK_STD_HOST_NC_8505:
^~~~
drivers/usb/phy/phy-ab8500-usb.c:370:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
event = UX500_MUSB_RIDA;
~~~~~~^~~~~~~~~~~~~~~~~
drivers/usb/phy/phy-ab8500-usb.c:371:2: note: here
case USB_LINK_HM_IDGND_8505:
^~~~
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20190729000631.GA24165@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull driver core and debugfs updates from Greg KH:
"Here is the "big" driver core and debugfs changes for 5.3-rc1
It's a lot of different patches, all across the tree due to some api
changes and lots of debugfs cleanups.
Other than the debugfs cleanups, in this set of changes we have:
- bus iteration function cleanups
- scripts/get_abi.pl tool to display and parse Documentation/ABI
entries in a simple way
- cleanups to Documenatation/ABI/ entries to make them parse easier
due to typos and other minor things
- default_attrs use for some ktype users
- driver model documentation file conversions to .rst
- compressed firmware file loading
- deferred probe fixes
All of these have been in linux-next for a while, with a bunch of
merge issues that Stephen has been patient with me for"
* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
debugfs: make error message a bit more verbose
orangefs: fix build warning from debugfs cleanup patch
ubifs: fix build warning after debugfs cleanup patch
driver: core: Allow subsystems to continue deferring probe
drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
arch_topology: Remove error messages on out-of-memory conditions
lib: notifier-error-inject: no need to check return value of debugfs_create functions
swiotlb: no need to check return value of debugfs_create functions
ceph: no need to check return value of debugfs_create functions
sunrpc: no need to check return value of debugfs_create functions
ubifs: no need to check return value of debugfs_create functions
orangefs: no need to check return value of debugfs_create functions
nfsd: no need to check return value of debugfs_create functions
lib: 842: no need to check return value of debugfs_create functions
debugfs: provide pr_fmt() macro
debugfs: log errors when something goes wrong
drivers: s390/cio: Fix compilation warning about const qualifiers
drivers: Add generic helper to match by of_node
driver_find_device: Unify the match function with class_find_device()
bus_find_device: Unify the match callback with class_find_device
...
At imx7ulp, the USB related analog register is located in PHY register
region too, so we need to control PLL at PHY driver directly.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
