On 01/11/2023 09:04, Abel Vesa wrote:
From: Jagadeesh Kona <quic_jkona@xxxxxxxxxxx>
This change demonstrates the use of dev_pm_genpd_set_hwmode API from
video driver to switch the video mvs0 gdsc to SW/HW modes at runtime
based on requirement.
This change adds a new boolean array member vcodec_pmdomains_hwctrl in
venus_resources structure to indicate if GDSC's have HW control support
or not. This data is used in vcodec_control_v4() to check if GDSC has
support to switch to HW control mode and then call dev_pm_genpd_set_hwmode
to switch the GDSC mode.
Before the GDSC HWCTL was available to the consumer, the venus driver
needed to somehow keep the power from collapsing while under the driver
control. The only way to do that was to clear the CORE_PWR_DISABLE bit
(in wrapper POWER_CONTROL register) and, respectively, set it back after
the driver control was completed.
Now, that there is a way to switch the GDSC HW/SW control back and
forth, the CORE_PWR_DISABLE toggling can be dropped.
Signed-off-by: Jagadeesh Kona <quic_jkona@xxxxxxxxxxx>
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
So I plan to give this a test on rb5 and db410c
My q here though is - has anybody on the submission list tested this
through suspend/resume and vdd min ?
---
bod
