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platform/x86/amd/pmf: Add support SPS PMF feature
SPS (a.k.a. Static Power Slider) gives a feel of Windows performance power slider for the Linux users, where the user selects a certain mode (like "balanced", "low-power" or "performance") and the thermals associated with each selected mode gets applied from the silicon side via the mailboxes defined through PMFW. PMF driver hooks to platform_profile by reading the PMF ACPI fn9 to see if the support is being advertised by ACPI interface. If supported, the PMF driver reacts to platform_profile selection choices made by the user and adjust the system thermal behavior. Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Link: https://lore.kernel.org/r/20220802151149.2123699-4-Shyam-sundar.S-k@amd.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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@@ -5,4 +5,4 @@ | |
| # | ||
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| obj-$(CONFIG_AMD_PMF) += amd-pmf.o | ||
| amd-pmf-objs := core.o acpi.o | ||
| amd-pmf-objs := core.o acpi.o sps.o | ||
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| @@ -0,0 +1,143 @@ | ||
| // SPDX-License-Identifier: GPL-2.0 | ||
| /* | ||
| * AMD Platform Management Framework (PMF) Driver | ||
| * | ||
| * Copyright (c) 2022, Advanced Micro Devices, Inc. | ||
| * All Rights Reserved. | ||
| * | ||
| * Author: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> | ||
| */ | ||
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| #include "pmf.h" | ||
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| static struct amd_pmf_static_slider_granular config_store; | ||
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| static void amd_pmf_load_defaults_sps(struct amd_pmf_dev *dev) | ||
| { | ||
| struct apmf_static_slider_granular_output output; | ||
| int i, j, idx = 0; | ||
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| memset(&config_store, 0, sizeof(config_store)); | ||
| apmf_get_static_slider_granular(dev, &output); | ||
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| for (i = 0; i < POWER_SOURCE_MAX; i++) { | ||
| for (j = 0; j < POWER_MODE_MAX; j++) { | ||
| config_store.prop[i][j].spl = output.prop[idx].spl; | ||
| config_store.prop[i][j].sppt = output.prop[idx].sppt; | ||
| config_store.prop[i][j].sppt_apu_only = | ||
| output.prop[idx].sppt_apu_only; | ||
| config_store.prop[i][j].fppt = output.prop[idx].fppt; | ||
| config_store.prop[i][j].stt_min = output.prop[idx].stt_min; | ||
| config_store.prop[i][j].stt_skin_temp[STT_TEMP_APU] = | ||
| output.prop[idx].stt_skin_temp[STT_TEMP_APU]; | ||
| config_store.prop[i][j].stt_skin_temp[STT_TEMP_HS2] = | ||
| output.prop[idx].stt_skin_temp[STT_TEMP_HS2]; | ||
| config_store.prop[i][j].fan_id = output.prop[idx].fan_id; | ||
| idx++; | ||
| } | ||
| } | ||
| } | ||
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| void amd_pmf_update_slider(struct amd_pmf_dev *dev, bool op, int idx, | ||
| struct amd_pmf_static_slider_granular *table) | ||
| { | ||
| int src = amd_pmf_get_power_source(); | ||
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| if (op == SLIDER_OP_SET) { | ||
| amd_pmf_send_cmd(dev, SET_SPL, false, config_store.prop[src][idx].spl, NULL); | ||
| amd_pmf_send_cmd(dev, SET_FPPT, false, config_store.prop[src][idx].fppt, NULL); | ||
| amd_pmf_send_cmd(dev, SET_SPPT, false, config_store.prop[src][idx].sppt, NULL); | ||
| amd_pmf_send_cmd(dev, SET_SPPT_APU_ONLY, false, | ||
| config_store.prop[src][idx].sppt_apu_only, NULL); | ||
| amd_pmf_send_cmd(dev, SET_STT_MIN_LIMIT, false, | ||
| config_store.prop[src][idx].stt_min, NULL); | ||
| amd_pmf_send_cmd(dev, SET_STT_LIMIT_APU, false, | ||
| config_store.prop[src][idx].stt_skin_temp[STT_TEMP_APU], NULL); | ||
| amd_pmf_send_cmd(dev, SET_STT_LIMIT_HS2, false, | ||
| config_store.prop[src][idx].stt_skin_temp[STT_TEMP_HS2], NULL); | ||
| } else if (op == SLIDER_OP_GET) { | ||
| amd_pmf_send_cmd(dev, GET_SPL, true, ARG_NONE, &table->prop[src][idx].spl); | ||
| amd_pmf_send_cmd(dev, GET_FPPT, true, ARG_NONE, &table->prop[src][idx].fppt); | ||
| amd_pmf_send_cmd(dev, GET_SPPT, true, ARG_NONE, &table->prop[src][idx].sppt); | ||
| amd_pmf_send_cmd(dev, GET_SPPT_APU_ONLY, true, ARG_NONE, | ||
| &table->prop[src][idx].sppt_apu_only); | ||
| amd_pmf_send_cmd(dev, GET_STT_MIN_LIMIT, true, ARG_NONE, | ||
| &table->prop[src][idx].stt_min); | ||
| amd_pmf_send_cmd(dev, GET_STT_LIMIT_APU, true, ARG_NONE, | ||
| (u32 *)&table->prop[src][idx].stt_skin_temp[STT_TEMP_APU]); | ||
| amd_pmf_send_cmd(dev, GET_STT_LIMIT_HS2, true, ARG_NONE, | ||
| (u32 *)&table->prop[src][idx].stt_skin_temp[STT_TEMP_HS2]); | ||
| } | ||
| } | ||
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| static int amd_pmf_profile_get(struct platform_profile_handler *pprof, | ||
| enum platform_profile_option *profile) | ||
| { | ||
| struct amd_pmf_dev *pmf = container_of(pprof, struct amd_pmf_dev, pprof); | ||
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| *profile = pmf->current_profile; | ||
| return 0; | ||
| } | ||
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| u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf) | ||
| { | ||
| u8 mode; | ||
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| switch (pmf->current_profile) { | ||
| case PLATFORM_PROFILE_PERFORMANCE: | ||
| mode = POWER_MODE_PERFORMANCE; | ||
| break; | ||
| case PLATFORM_PROFILE_BALANCED: | ||
| mode = POWER_MODE_BALANCED_POWER; | ||
| break; | ||
| case PLATFORM_PROFILE_LOW_POWER: | ||
| mode = POWER_MODE_POWER_SAVER; | ||
| break; | ||
| default: | ||
| dev_err(pmf->dev, "Unknown Platform Profile.\n"); | ||
| break; | ||
| } | ||
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| return mode; | ||
| } | ||
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| static int amd_pmf_profile_set(struct platform_profile_handler *pprof, | ||
| enum platform_profile_option profile) | ||
| { | ||
| struct amd_pmf_dev *pmf = container_of(pprof, struct amd_pmf_dev, pprof); | ||
| u8 mode; | ||
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| pmf->current_profile = profile; | ||
| mode = amd_pmf_get_pprof_modes(pmf); | ||
| amd_pmf_update_slider(pmf, SLIDER_OP_SET, mode, NULL); | ||
| return 0; | ||
| } | ||
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| int amd_pmf_init_sps(struct amd_pmf_dev *dev) | ||
| { | ||
| int err; | ||
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| dev->current_profile = PLATFORM_PROFILE_BALANCED; | ||
| amd_pmf_load_defaults_sps(dev); | ||
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| dev->pprof.profile_get = amd_pmf_profile_get; | ||
| dev->pprof.profile_set = amd_pmf_profile_set; | ||
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| /* Setup supported modes */ | ||
| set_bit(PLATFORM_PROFILE_LOW_POWER, dev->pprof.choices); | ||
| set_bit(PLATFORM_PROFILE_BALANCED, dev->pprof.choices); | ||
| set_bit(PLATFORM_PROFILE_PERFORMANCE, dev->pprof.choices); | ||
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| /* Create platform_profile structure and register */ | ||
| err = platform_profile_register(&dev->pprof); | ||
| if (err) | ||
| dev_err(dev->dev, "Failed to register SPS support, this is most likely an SBIOS bug: %d\n", | ||
| err); | ||
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| return err; | ||
| } | ||
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| void amd_pmf_deinit_sps(struct amd_pmf_dev *dev) | ||
| { | ||
| platform_profile_remove(); | ||
| } |