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usb_power_delivery class will now display AVS cap as
`spr_adjustable_voltage_supply`. `maximum_current_9V_to_15V` and
`maximum_current_15V_to_20V` shows the corresponding current limits
in mA. `peak_current` follows the same convention as fixed_supply
where the value reported in the capabilities message is displayed
as is.
Sample output with an SPR AVS capable PD charger:
$cat /sys/class/usb_power_delivery/pd1/source-capabilities/5:spr_adjustable_voltage_supply/maximum_current_9V_to_15V
4000mA
$cat /sys/class/usb_power_delivery/pd1/source-capabilities/5:spr_adjustable_voltage_supply/maximum_current_15V_to_20V
3350mA
$cat /sys/class/usb_power_delivery/pd1/source-capabilities/5:spr_adjustable_voltage_supply/peak_current
0
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251015043017.3382908-2-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit aed65af1cc2f ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move all the
device_type variables in use by the driver to be constant structures as
well, placing it into read-only memory which can not be modified at
runtime.
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240218-device_cleanup-usb-v1-1-77423c4da262@marliere.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixed one typo.
Signed-off-by: Ghanshyam Agrawal <ghanshyam1898@gmail.com>
Link: https://lore.kernel.org/r/20231215083930.566164-1-ghanshyam1898@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().
This is less verbose.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/c7b99c4f52649ce6405779fbf9170edc5633fdbb.1702229697.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Exposing the value of the field as is.
The Peak Current value has to be interpreted as described
in Table 6-10 (Fixed Power Source Peak Current Capability)
of the USB Power Delivery Specification, but that
interpretation will be done in user space, not in kernel.
Suggested-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231002142240.2641962-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The current implementation mistakenly performs a & operation on
the output of sysfs_emit. This patch performs the & operation before
calling sysfs_emit.
Fixes: 662a60102c12 ("usb: typec: Separate USB Power Delivery from USB Type-C")
Cc: stable <stable@kernel.org>
Reported-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Pavan Holla <pholla@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Message-ID: <20230607193328.3359487-1-pholla@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is no need to manually set the owner of a struct class, as the
registering function does it automatically, so remove all of the
explicit settings from various drivers that did so as it is unneeded.
This allows us to remove this pointer entirely from this structure going
forward.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230313181843.1207845-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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28th bit of fixed supply sink PDO represents higher capability.
When this bit is set, the sink device needs more than vsafe5V
(eg: 12 V) to provide full functionality. This patch adds
this higher capability sysfs interface for sink PDO.
28th bit of fixed supply source PDO represents usb_suspend_supported
attribute. This usb_suspend_supported sysfs is already exposed for
source PDOs. This patch adds 'source-capabilities' in
usb_suspend_supported sysfs documentation for additional clarity.
Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230214114543.205103-2-saranya.gopal@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As per USB PD specification, 28th bit of fixed supply sink PDO
represents "higher capability" attribute and not "usb suspend
supported" attribute. So, this patch removes the usb_suspend_supported
attribute from sink PDO.
Fixes: 662a60102c12 ("usb: typec: Separate USB Power Delivery from USB Type-C")
Cc: stable <stable@kernel.org>
Reported-by: Rajaram Regupathy <rajaram.regupathy@intel.com>
Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230214114543.205103-1-saranya.gopal@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Introducing a small device class for USB Power Delivery.
The idea with it is that we do not mix any more USB Power
Delivery information into the USB Type-C connectors only.
This separation will make it possible to register USB Power
Delivery devices also from other places, for example from
USB Type-C Bridges (see USB Type-C Bridge Specification).
The device class will not always deal with only the messages
and objects that were negotiated with the partner, but
instead messages and objects that can be used in the
negotiation. That allows the USB PD devices to be shared and
reconfigured. The ports can decide which objects are to be
advertised to the partner before the contract is negotiated.
It is also possible to allow the user space to make that
decision if needed.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220502132058.86236-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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