pwm: rockchip: Avoid glitches on already running PWMs
authorBoris Brezillon <boris.brezillon@free-electrons.com>
Tue, 14 Jun 2016 09:13:13 +0000 (11:13 +0200)
committerThierry Reding <thierry.reding@gmail.com>
Mon, 11 Jul 2016 10:49:27 +0000 (12:49 +0200)
commit48cf973cae33488f84d7ab79a0f613383cff4de4
tree9a990cee1a27949b156050525318553adf63c807
parent1ebb74cf3537135f157beddf1a4366070155edda
pwm: rockchip: Avoid glitches on already running PWMs

The current logic will disable the PWM clk even if the PWM was left
enabled by the bootloader (because it's controlling a critical device
like a regulator for example).
Keep the PWM clk enabled if the PWM is enabled to avoid any glitches.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
drivers/pwm/pwm-rockchip.c