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authorJohannes Stezenbach <js@sig21.net>2024-03-05 11:59:15 +0100
committerIlpo Järvinen <ilpo.jarvinen@linux.intel.com>2024-03-12 12:48:22 +0200
commitf62f012f998ad2e43a93fdff2720a4c746025ee9 (patch)
tree17bcff35c65def85b6369039fa9729dfa38cb36c /drivers/platform/x86/intel/pmc
parent86cef4593e04b192d62b71f7bcf97fced916150b (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')
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