diff options
author | Johannes Stezenbach <js@sig21.net> | 2024-03-05 11:59:15 +0100 |
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committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-03-12 12:48:22 +0200 |
commit | f62f012f998ad2e43a93fdff2720a4c746025ee9 (patch) | |
tree | 17bcff35c65def85b6369039fa9729dfa38cb36c /drivers/platform/x86/intel/pmc | |
parent | 86cef4593e04b192d62b71f7bcf97fced916150b (diff) |
x86/platform/atom: Check state of Punit managed devices on s2idle
For the Bay Trail or Cherry Trail SoC to enter the S0i3 power-level
at s2idle suspend requires most of the hw-blocks / devices in the SoC
to be in D3 when entering s2idle suspend.
If some devices are not in D3 then the SoC will stay in a higher
power state, consuming much more power from the battery then in S0i3.
Use the new acpi_s2idle_dev_ops and acpi_register_lps0_dev()
functionality to register a new s2idle check function which checks that
all hardware blocks in the North complex (controlled by Punit) are in
a state that allows the SoC to enter S0i3 and prints an error message
for any device in D0.
Signed-off-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: "Borislav Petkov (AMD)" <bp@alien8.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[hdegoede: Use acpi_s2idle_dev_ops]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240305105915.76242-6-hdegoede@redhat.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/intel/pmc')
0 files changed, 0 insertions, 0 deletions