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drivers: firmware: psci: Announce support for OS initiated suspend mode
PSCI firmware v1.0+, supports two different modes for CPU_SUSPEND. The Platform Coordinated mode, which is the default and mandatory mode, while support for the OS initiated (OSI) mode is optional. In some cases it's interesting for the user/developer to know if the OSI mode is supported by the PSCI FW, so print a message to the log if that is the case. Co-developed-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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2 changed files with 25 additions and 1 deletions
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#define PSCI_1_0_FN_PSCI_FEATURES PSCI_0_2_FN(10)
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#define PSCI_1_0_FN_SYSTEM_SUSPEND PSCI_0_2_FN(14)
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#define PSCI_1_0_FN_SET_SUSPEND_MODE PSCI_0_2_FN(15)
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#define PSCI_1_0_FN64_SYSTEM_SUSPEND PSCI_0_2_FN64(14)
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#define PSCI_1_0_FEATURES_CPU_SUSPEND_PF_MASK \
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(0x1 << PSCI_1_0_FEATURES_CPU_SUSPEND_PF_SHIFT)
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#define PSCI_1_0_OS_INITIATED BIT(0)
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#define PSCI_1_0_SUSPEND_MODE_PC 0
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#define PSCI_1_0_SUSPEND_MODE_OSI 1
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/* PSCI return values (inclusive of all PSCI versions) */
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#define PSCI_RET_SUCCESS 0
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#define PSCI_RET_NOT_SUPPORTED -1
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