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Some of LoongArch processors (Loongson-3 series) support DVFS, their IOCSR.FEATURES has IOCSRF_FREQSCALE set. And they has a micro-core in the package called SMC (System Management Controller), which can be used to detect temperature, control fans, scale frequency and voltage, etc. The Loongson-3 CPUFreq driver is very simple now, it communicate with SMC, get DVFS info, set target frequency from CPUFreq core, and so on. There is a command list to interact with SMC, widely-used commands in the CPUFreq driver include: CMD_GET_VERSION: Get SMC firmware version. CMD_GET_FEATURE: Get enabled SMC features. CMD_SET_FEATURE: Enable SMC features, such as basic DVFS, BOOST. CMD_GET_FREQ_LEVEL_NUM: Get the number of all frequency levels. CMD_GET_FREQ_BOOST_LEVEL: Get the first boost frequency level. CMD_GET_FREQ_LEVEL_INFO: Get the detail info of a frequency level. CMD_GET_FREQ_INFO: Get the current frequency. CMD_SET_FREQ_INFO: Set the target frequency. In future we will add automatic frequency scaling, which is similar to Intel's HWP (HardWare P-State). Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [ Viresh: Minor formatting cleanups, change return type of exit() to void and use devm_mutex_init() ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
110 lines
5.1 KiB
Makefile
110 lines
5.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# CPUfreq core
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obj-$(CONFIG_CPU_FREQ) += cpufreq.o freq_table.o
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# CPUfreq stats
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obj-$(CONFIG_CPU_FREQ_STAT) += cpufreq_stats.o
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# CPUfreq governors
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obj-$(CONFIG_CPU_FREQ_GOV_PERFORMANCE) += cpufreq_performance.o
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obj-$(CONFIG_CPU_FREQ_GOV_POWERSAVE) += cpufreq_powersave.o
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obj-$(CONFIG_CPU_FREQ_GOV_USERSPACE) += cpufreq_userspace.o
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obj-$(CONFIG_CPU_FREQ_GOV_ONDEMAND) += cpufreq_ondemand.o
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obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) += cpufreq_conservative.o
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obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o
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obj-$(CONFIG_CPU_FREQ_GOV_ATTR_SET) += cpufreq_governor_attr_set.o
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obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o
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obj-$(CONFIG_CPUFREQ_DT_PLATDEV) += cpufreq-dt-platdev.o
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# Traces
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CFLAGS_amd-pstate-trace.o := -I$(src)
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amd_pstate-y := amd-pstate.o amd-pstate-trace.o
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##################################################################################
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# x86 drivers.
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# Link order matters. K8 is preferred to ACPI because of firmware bugs in early
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# K8 systems. This is still the case but acpi-cpufreq errors out so that
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# powernow-k8 can load then. ACPI is preferred to all other hardware-specific drivers.
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# speedstep-* is preferred over p4-clockmod.
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obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o
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obj-$(CONFIG_X86_AMD_PSTATE) += amd_pstate.o
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obj-$(CONFIG_X86_AMD_PSTATE_UT) += amd-pstate-ut.o
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obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o
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obj-$(CONFIG_X86_PCC_CPUFREQ) += pcc-cpufreq.o
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obj-$(CONFIG_X86_POWERNOW_K6) += powernow-k6.o
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obj-$(CONFIG_X86_POWERNOW_K7) += powernow-k7.o
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obj-$(CONFIG_X86_LONGHAUL) += longhaul.o
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obj-$(CONFIG_X86_E_POWERSAVER) += e_powersaver.o
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obj-$(CONFIG_ELAN_CPUFREQ) += elanfreq.o
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obj-$(CONFIG_SC520_CPUFREQ) += sc520_freq.o
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obj-$(CONFIG_X86_LONGRUN) += longrun.o
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obj-$(CONFIG_X86_GX_SUSPMOD) += gx-suspmod.o
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obj-$(CONFIG_X86_SPEEDSTEP_ICH) += speedstep-ich.o
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obj-$(CONFIG_X86_SPEEDSTEP_LIB) += speedstep-lib.o
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obj-$(CONFIG_X86_SPEEDSTEP_SMI) += speedstep-smi.o
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obj-$(CONFIG_X86_SPEEDSTEP_CENTRINO) += speedstep-centrino.o
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obj-$(CONFIG_X86_P4_CLOCKMOD) += p4-clockmod.o
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obj-$(CONFIG_X86_CPUFREQ_NFORCE2) += cpufreq-nforce2.o
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obj-$(CONFIG_X86_INTEL_PSTATE) += intel_pstate.o
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obj-$(CONFIG_X86_AMD_FREQ_SENSITIVITY) += amd_freq_sensitivity.o
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##################################################################################
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# ARM SoC drivers
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obj-$(CONFIG_ARM_APPLE_SOC_CPUFREQ) += apple-soc-cpufreq.o
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obj-$(CONFIG_ARM_ARMADA_37XX_CPUFREQ) += armada-37xx-cpufreq.o
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obj-$(CONFIG_ARM_ARMADA_8K_CPUFREQ) += armada-8k-cpufreq.o
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obj-$(CONFIG_ARM_BRCMSTB_AVS_CPUFREQ) += brcmstb-avs-cpufreq.o
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obj-$(CONFIG_ACPI_CPPC_CPUFREQ) += cppc_cpufreq.o
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obj-$(CONFIG_ARCH_DAVINCI) += davinci-cpufreq.o
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obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ) += highbank-cpufreq.o
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obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6q-cpufreq.o
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obj-$(CONFIG_ARM_IMX_CPUFREQ_DT) += imx-cpufreq-dt.o
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obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += kirkwood-cpufreq.o
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obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ) += mediatek-cpufreq.o
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obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ_HW) += mediatek-cpufreq-hw.o
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obj-$(CONFIG_MACH_MVEBU_V7) += mvebu-cpufreq.o
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obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o
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obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o
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obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o
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obj-$(CONFIG_ARM_QCOM_CPUFREQ_HW) += qcom-cpufreq-hw.o
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obj-$(CONFIG_ARM_QCOM_CPUFREQ_NVMEM) += qcom-cpufreq-nvmem.o
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obj-$(CONFIG_ARM_RASPBERRYPI_CPUFREQ) += raspberrypi-cpufreq.o
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obj-$(CONFIG_ARM_S3C64XX_CPUFREQ) += s3c64xx-cpufreq.o
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obj-$(CONFIG_ARM_S5PV210_CPUFREQ) += s5pv210-cpufreq.o
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obj-$(CONFIG_ARM_SA1110_CPUFREQ) += sa1110-cpufreq.o
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obj-$(CONFIG_ARM_SCMI_CPUFREQ) += scmi-cpufreq.o
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obj-$(CONFIG_ARM_SCPI_CPUFREQ) += scpi-cpufreq.o
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obj-$(CONFIG_ARM_SPEAR_CPUFREQ) += spear-cpufreq.o
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obj-$(CONFIG_ARM_STI_CPUFREQ) += sti-cpufreq.o
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obj-$(CONFIG_ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM) += sun50i-cpufreq-nvmem.o
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obj-$(CONFIG_ARM_TEGRA20_CPUFREQ) += tegra20-cpufreq.o
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obj-$(CONFIG_ARM_TEGRA124_CPUFREQ) += tegra124-cpufreq.o
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obj-$(CONFIG_ARM_TEGRA186_CPUFREQ) += tegra186-cpufreq.o
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obj-$(CONFIG_ARM_TEGRA194_CPUFREQ) += tegra194-cpufreq.o
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obj-$(CONFIG_ARM_TI_CPUFREQ) += ti-cpufreq.o
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obj-$(CONFIG_ARM_VEXPRESS_SPC_CPUFREQ) += vexpress-spc-cpufreq.o
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##################################################################################
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# PowerPC platform drivers
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obj-$(CONFIG_CPU_FREQ_CBE) += ppc-cbe-cpufreq.o
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ppc-cbe-cpufreq-y += ppc_cbe_cpufreq_pervasive.o ppc_cbe_cpufreq.o
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obj-$(CONFIG_CPU_FREQ_CBE_PMI) += ppc_cbe_cpufreq_pmi.o
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obj-$(CONFIG_CPU_FREQ_MAPLE) += maple-cpufreq.o
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obj-$(CONFIG_QORIQ_CPUFREQ) += qoriq-cpufreq.o
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obj-$(CONFIG_CPU_FREQ_PMAC) += pmac32-cpufreq.o
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obj-$(CONFIG_CPU_FREQ_PMAC64) += pmac64-cpufreq.o
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obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += pasemi-cpufreq.o
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obj-$(CONFIG_POWERNV_CPUFREQ) += powernv-cpufreq.o
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##################################################################################
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# Other platform drivers
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obj-$(CONFIG_BMIPS_CPUFREQ) += bmips-cpufreq.o
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obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
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obj-$(CONFIG_LOONGSON3_CPUFREQ) += loongson3_cpufreq.o
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obj-$(CONFIG_SH_CPU_FREQ) += sh-cpufreq.o
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obj-$(CONFIG_SPARC_US2E_CPUFREQ) += sparc-us2e-cpufreq.o
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obj-$(CONFIG_SPARC_US3_CPUFREQ) += sparc-us3-cpufreq.o
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