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| author | Stephan Gerhold <stephan@gerhold.net> | 2020-04-16 11:58:21 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-05-26 11:46:01 +0300 |
| commit | a871be6b8eee13a35a3e8e56c62770ef17ee9220 (patch) | |
| tree | 1577c991889e2ccf903cc131c5f2aedcdbc332f9 /drivers/cpuidle/Kconfig.arm | |
| parent | a0bd8a2780fab2c8008e128e8a55995d8923e638 (diff) | |
| download | linux-a871be6b8eee13a35a3e8e56c62770ef17ee9220.tar.xz | |
cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver
The Qualcomm SPM cpuidle driver seems to be the last driver still
using the generic ARM CPUidle infrastructure.
Converting it actually allows us to simplify the driver,
and we end up being able to remove more lines than adding new ones:
- We can parse the CPUidle states in the device tree directly
with dt_idle_states (and don't need to duplicate that
functionality into the spm driver).
- Each "saw" device managed by the SPM driver now directly
registers its own cpuidle driver, removing the need for
any global (per cpu) state.
The device tree binding is the same, so the driver stays
compatible with all old device trees.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Lina Iyer <ilina@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle/Kconfig.arm')
| -rw-r--r-- | drivers/cpuidle/Kconfig.arm | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm index 99a2d72ac02b..51a7e89085c0 100644 --- a/drivers/cpuidle/Kconfig.arm +++ b/drivers/cpuidle/Kconfig.arm @@ -94,3 +94,16 @@ config ARM_TEGRA_CPUIDLE select ARM_CPU_SUSPEND help Select this to enable cpuidle for NVIDIA Tegra20/30/114/124 SoCs. + +config ARM_QCOM_SPM_CPUIDLE + bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)" + depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 + select ARM_CPU_SUSPEND + select CPU_IDLE_MULTIPLE_DRIVERS + select DT_IDLE_STATES + select QCOM_SCM + help + Select this to enable cpuidle for Qualcomm processors. + The Subsystem Power Manager (SPM) controls low power modes for the + CPU and L2 cores. It interface with various system drivers to put + the cores in low power modes. |