gpu: nvgpu: add QoS notifier for common clk framework

Define specific QoS notifier for common clk framework
and protect it with CONFIG_COMMON_CLK

This new API will first get min/max requirements from
pm_qos and set min/max freq values in devfreq

A call to update_devfreq() will then ensure that
new estimated frequency is clipped appropriately
between min and max values
This also ensures that frequency is set along with
all the book-keeping

Add below platform specific notifier callback and use it
with pm_qos_add_notifier()
int (*qos_notify)()
If qos_notify is set, then only register the callback

We currently support only one qos_id which is treated
as notifier for min frequency
Remove dependency on qos_id, and use appropriate QoS
APIs like pm_qos_read_min/max_bound()

Store devfreq's min/max frequency in struct gk20a
for reference

Bug 1772462

Change-Id: I63d6d17451d19c9d376b67df7db775b38929287d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1161161
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

0 files changed, 0 insertions, 0 deletions