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Add support for vbus detection and power supply. This code is more or
less stolen from phy-gpio-vbus-usb.c, and aims at providing a detection
mechanism for VBus (ie. usb cable plug) based on a GPIO line, and a
power supply activation which draws current from the VBus.
[ balbi@ti.com : fix build break ]
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Change internal gpio handling from integer gpios into gpio
descriptors. This change only addresses the internal API and
device-tree/ACPI, while the legacy platform data remains integer space
based.
This change is only build compile tested, and very prone to error. I
leave this comment for now in the commit message so that this patch gets
some testing as I'm pretty sure it's buggy.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
no functional changes, just renaming the function
in order to make it slightly clearer what it should
be used for, also matching the driver name.
Signed-off-by: Felipe Balbi <balbi@ti.com>
instead of having each user of generic phy find
out about its own resources and pass it to the
core layer, have th core layer itself figure that
out. It's as simple as moving a piece of code
around. This fixes a big regression caused during
the merge window where am335x-based platforms
wouldn't be able to probe their PHY driver.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Modelling the RESET line as a regulator supply wasn't a good idea
as it kind of abuses the regulator framework and also makes adaptation
code more complex.
Instead, manage the RESET gpio line directly in the driver. Update
the device tree binding information.
This also makes us easy to migrate to a dedicated GPIO RESET controller
whenever it becomes available.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since we only enable the PHY clock on init and the PHY init and shutdown
does not occur in atomitc context there is no need to prepare the clock
before it is enabled. Move the clk_prepare() operations to go along
with the enables, allowing the clock to be fully idle when not in use.
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch exports the mostly generic functions so they can be used from
other phy driver instead of duplicating the code.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
