[PATCH] sunxi: usb: convert PHY GPIO functions to DM

[Samuel Holland]

On 6/7/22 7:06 PM, Andre Przywara wrote:
> The Allwinner USB PHY driver is still using the legacy GPIO interface,
> which is now implemented by the DM_GPIO compat functions.
> Those seem to have some design flaws, as setting the direction, then
> later setting the value will not work, if the DM_GPIO driver is
> implementing set_flags.
> 
> Fix this by using the dm_ version of the direct GPIO interface, which
> uses struct gpio_desc structs to handle requested GPIOs, and actually
> keeps the flags we set earlier.
> 
> This fixes USB operation on boards which need to toggle the VBUS supply
> via a GPIO, like the Teres-I laptop or the BananaPi M2 Berry board.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> Reported-by: Milan P. Stanić <mps at arvanta.net>

Reviewed-by: Samuel Holland <samuel at sholland.org>

It looks like the other users of sunxi_name_to_gpio are unaffected because they
call only gpio_direction_output (sometimes repeatedly), never gpio_set_value.

Regards,
Samuel