Audio DSP device supports D0 substates in form of D0ix, allowing for
preserving more power even when device is still considered active (D0).
When entered, certain domains which are not being currently used become
power gated. Entering and leaving D0ix is a complex process and differs
between firmware generations.
Conditions that disallow D0i3 and require immediate D0i0 transition
include but may not be limited to: IPC traffic, firmware tracing and
SRAM I/O. To make D0ix toggling sane, delay D0i3 transition and refresh
the timer each time an IPC is requested.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220516101116.190192-9-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Firmware provides its own debug functionality. While coredump is one of
these, traces are the main area of interest. kfifo is enlisted to cache
log data that is being pumped to driver through SRAM. Separate DSP
operations are declared as actual feature implementation differs between
firmware generations.
As log gathering involves usage of IPCs, add all necessary: ENABLE_LOGS
and SYSTEM_TIME.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220516101116.190192-8-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Firmware modules implement processing algorithms. Their lifecycle,
similarly to pipelines is being controlled by IPCs: initialization,
deletion and (un)binding.
Modules can be configured at runtime - runtime parameters. This is done
with help of LARGE_CONFIG IPCs: getter and setter.
Due to firmware limitations, LARGE_CONFIG_GET handler implementation
does not support retrieving payload with size larger than IPC inbox
window size.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-8-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
