| Message ID | 20220802112545.2118632-4-Shyam-sundar.S-k@amd.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | platform/x86/amd/pmf: Introduce AMD PMF Driver | expand |
Hi, On 8/2/22 13:25, Shyam Sundar S K wrote: > 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. > > Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Thanks, patch looks good to me: Reviewed-by: Hans de Goede <hdegoede@redhat.com> Regards, Hans > --- > drivers/platform/x86/amd/pmf/Makefile | 2 +- > drivers/platform/x86/amd/pmf/acpi.c | 10 ++ > drivers/platform/x86/amd/pmf/core.c | 26 +++++ > drivers/platform/x86/amd/pmf/pmf.h | 64 +++++++++++ > drivers/platform/x86/amd/pmf/sps.c | 149 ++++++++++++++++++++++++++ > 5 files changed, 250 insertions(+), 1 deletion(-) > create mode 100644 drivers/platform/x86/amd/pmf/sps.c > > diff --git a/drivers/platform/x86/amd/pmf/Makefile b/drivers/platform/x86/amd/pmf/Makefile > index 2617eba773ce..557521a80427 100644 > --- a/drivers/platform/x86/amd/pmf/Makefile > +++ b/drivers/platform/x86/amd/pmf/Makefile > @@ -5,4 +5,4 @@ > # > > obj-$(CONFIG_AMD_PMF) += amd-pmf.o > -amd-pmf-objs := core.o acpi.o > +amd-pmf-objs := core.o acpi.o sps.o > diff --git a/drivers/platform/x86/amd/pmf/acpi.c b/drivers/platform/x86/amd/pmf/acpi.c > index 5269d48b1f5f..717ee81a5f73 100644 > --- a/drivers/platform/x86/amd/pmf/acpi.c > +++ b/drivers/platform/x86/amd/pmf/acpi.c > @@ -95,6 +95,16 @@ int is_apmf_func_supported(struct amd_pmf_dev *pdev, unsigned long index) > return !!(pdev->supported_func & BIT(index - 1)); > } > > +int apmf_get_static_slider_granular(struct amd_pmf_dev *pdev, > + struct apmf_static_slider_granular_output *data) > +{ > + if (!is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) > + return -EINVAL; > + > + return apmf_if_call_store_buffer(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR, > + data, sizeof(*data)); > +} > + > static int apmf_if_verify_interface(struct amd_pmf_dev *pdev) > { > struct apmf_verify_interface output; > diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c > index c5002b7bb904..a70ab6c9608a 100644 > --- a/drivers/platform/x86/amd/pmf/core.c > +++ b/drivers/platform/x86/amd/pmf/core.c > @@ -12,6 +12,7 @@ > #include <linux/module.h> > #include <linux/pci.h> > #include <linux/platform_device.h> > +#include <linux/power_supply.h> > #include "pmf.h" > > /* PMF-SMU communication registers */ > @@ -45,6 +46,14 @@ > #define DELAY_MIN_US 2000 > #define DELAY_MAX_US 3000 > > +int amd_pmf_get_power_source(void) > +{ > + if (power_supply_is_system_supplied() > 0) > + return POWER_SOURCE_AC; > + else > + return POWER_SOURCE_DC; > +} > + > static inline u32 amd_pmf_reg_read(struct amd_pmf_dev *dev, int reg_offset) > { > return ioread32(dev->regbase + reg_offset); > @@ -138,6 +147,21 @@ static const struct pci_device_id pmf_pci_ids[] = { > { } > }; > > +static void amd_pmf_init_features(struct amd_pmf_dev *dev) > +{ > + /* Enable Static Slider */ > + if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) { > + amd_pmf_init_sps(dev); > + dev_dbg(dev->dev, "SPS enabled and Platform Profiles registered\n"); > + } > +} > + > +static void amd_pmf_deinit_features(struct amd_pmf_dev *dev) > +{ > + if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) > + amd_pmf_deinit_sps(dev); > +} > + > static const struct acpi_device_id amd_pmf_acpi_ids[] = { > {"AMDI0102", 0}, > { } > @@ -206,6 +230,7 @@ static int amd_pmf_probe(struct platform_device *pdev) > > apmf_acpi_init(dev); > platform_set_drvdata(pdev, dev); > + amd_pmf_init_features(dev); > > mutex_init(&dev->lock); > dev_info(dev->dev, "registered PMF device successfully\n"); > @@ -218,6 +243,7 @@ static int amd_pmf_remove(struct platform_device *pdev) > struct amd_pmf_dev *dev = platform_get_drvdata(pdev); > > mutex_destroy(&dev->lock); > + amd_pmf_deinit_features(dev); > kfree(dev->buf); > return 0; > } > diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h > index bdadbff168ee..5c867dac7d44 100644 > --- a/drivers/platform/x86/amd/pmf/pmf.h > +++ b/drivers/platform/x86/amd/pmf/pmf.h > @@ -12,10 +12,12 @@ > #define PMF_H > > #include <linux/acpi.h> > +#include <linux/platform_profile.h> > > /* APMF Functions */ > #define APMF_FUNC_VERIFY_INTERFACE 0 > #define APMF_FUNC_GET_SYS_PARAMS 1 > +#define APMF_FUNC_STATIC_SLIDER_GRANULAR 9 > > /* Message Definitions */ > #define SET_SPL 0x03 /* SPL: Sustained Power Limit */ > @@ -36,6 +38,8 @@ > #define GET_STT_LIMIT_APU 0x20 > #define GET_STT_LIMIT_HS2 0x21 > > +#define ARG_NONE 0 > + > /* AMD PMF BIOS interfaces */ > struct apmf_verify_interface { > u16 size; > @@ -51,6 +55,30 @@ struct apmf_system_params { > u8 command_code; > } __packed; > > +enum amd_stt_skin_temp { > + STT_TEMP_APU, > + STT_TEMP_HS2, > + STT_TEMP_COUNT, > +}; > + > +enum amd_slider_op { > + SLIDER_OP_GET, > + SLIDER_OP_SET, > +}; > + > +enum power_source { > + POWER_SOURCE_AC, > + POWER_SOURCE_DC, > + POWER_SOURCE_MAX, > +}; > + > +enum power_modes { > + POWER_MODE_PERFORMANCE, > + POWER_MODE_BALANCED_POWER, > + POWER_MODE_POWER_SAVER, > + POWER_MODE_MAX, > +}; > + > struct amd_pmf_dev { > void __iomem *regbase; > void __iomem *smu_virt_addr; > @@ -60,10 +88,46 @@ struct amd_pmf_dev { > struct device *dev; > struct mutex lock; /* protects the PMF interface */ > u32 supported_func; > + enum platform_profile_option current_profile; > + struct platform_profile_handler pprof; > +}; > + > +struct apmf_sps_prop_granular { > + u32 fppt; > + u32 sppt; > + u32 sppt_apu_only; > + u32 spl; > + u32 stt_min; > + u8 stt_skin_temp[STT_TEMP_COUNT]; > + u32 fan_id; > +} __packed; > + > +/* Static Slider */ > +struct apmf_static_slider_granular_output { > + u16 size; > + struct apmf_sps_prop_granular prop[POWER_SOURCE_MAX * POWER_MODE_MAX]; > +} __packed; > + > +struct amd_pmf_static_slider_granular { > + u16 size; > + struct apmf_sps_prop_granular prop[POWER_SOURCE_MAX][POWER_MODE_MAX]; > }; > > /* Core Layer */ > int apmf_acpi_init(struct amd_pmf_dev *pmf_dev); > +int is_apmf_func_supported(struct amd_pmf_dev *pdev, unsigned long index); > int amd_pmf_send_cmd(struct amd_pmf_dev *dev, u8 message, bool get, u32 arg, u32 *data); > +int amd_pmf_get_power_source(void); > + > +/* SPS Layer */ > +u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf); > +void amd_pmf_update_slider(struct amd_pmf_dev *dev, bool op, int idx, > + struct amd_pmf_static_slider_granular *table); > +int amd_pmf_init_sps(struct amd_pmf_dev *dev); > +void amd_pmf_deinit_sps(struct amd_pmf_dev *dev); > +int apmf_get_static_slider_granular(struct amd_pmf_dev *pdev, > + struct apmf_static_slider_granular_output *output); > +void amd_pmf_load_defaults_sps(struct amd_pmf_dev *dev); > + > > #endif /* PMF_H */ > diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c > new file mode 100644 > index 000000000000..ef4df3fd774b > --- /dev/null > +++ b/drivers/platform/x86/amd/pmf/sps.c > @@ -0,0 +1,149 @@ > +// 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> > + */ > + > +#include "pmf.h" > + > +static int amd_pmf_profile_get(struct platform_profile_handler *pprof, > + enum platform_profile_option *profile); > +static int amd_pmf_profile_set(struct platform_profile_handler *pprof, > + enum platform_profile_option profile); > +static struct amd_pmf_static_slider_granular config_store; > + > +void amd_pmf_load_defaults_sps(struct amd_pmf_dev *dev) > +{ > + struct apmf_static_slider_granular_output output; > + int i, j, idx = 0; > + > + memset(&config_store, 0, sizeof(config_store)); > + apmf_get_static_slider_granular(dev, &output); > + > + 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++; > + } > + } > +} > + > +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(); > + > + 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]); > + } > +} > + > +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); > + > + *profile = pmf->current_profile; > + return 0; > +} > + > +u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf) > +{ > + u8 mode; > + > + 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; > + } > + > + return mode; > +} > + > +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; > + > + pmf->current_profile = profile; > + mode = amd_pmf_get_pprof_modes(pmf); > + amd_pmf_update_slider(pmf, SLIDER_OP_SET, mode, NULL); > + return 0; > +} > + > +int amd_pmf_init_sps(struct amd_pmf_dev *dev) > +{ > + int err = 0; > + > + dev->pprof.profile_get = amd_pmf_profile_get; > + dev->pprof.profile_set = amd_pmf_profile_set; > + > + /* 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); > + > + /* 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); > + return -EEXIST; > + } > + > + dev->current_profile = PLATFORM_PROFILE_BALANCED; > + amd_pmf_load_defaults_sps(dev); > + > + return err; > +} > + > +void amd_pmf_deinit_sps(struct amd_pmf_dev *dev) > +{ > + platform_profile_remove(); > +}
diff --git a/drivers/platform/x86/amd/pmf/Makefile b/drivers/platform/x86/amd/pmf/Makefile index 2617eba773ce..557521a80427 100644 --- a/drivers/platform/x86/amd/pmf/Makefile +++ b/drivers/platform/x86/amd/pmf/Makefile @@ -5,4 +5,4 @@ # obj-$(CONFIG_AMD_PMF) += amd-pmf.o -amd-pmf-objs := core.o acpi.o +amd-pmf-objs := core.o acpi.o sps.o diff --git a/drivers/platform/x86/amd/pmf/acpi.c b/drivers/platform/x86/amd/pmf/acpi.c index 5269d48b1f5f..717ee81a5f73 100644 --- a/drivers/platform/x86/amd/pmf/acpi.c +++ b/drivers/platform/x86/amd/pmf/acpi.c @@ -95,6 +95,16 @@ int is_apmf_func_supported(struct amd_pmf_dev *pdev, unsigned long index) return !!(pdev->supported_func & BIT(index - 1)); } +int apmf_get_static_slider_granular(struct amd_pmf_dev *pdev, + struct apmf_static_slider_granular_output *data) +{ + if (!is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) + return -EINVAL; + + return apmf_if_call_store_buffer(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR, + data, sizeof(*data)); +} + static int apmf_if_verify_interface(struct amd_pmf_dev *pdev) { struct apmf_verify_interface output; diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c index c5002b7bb904..a70ab6c9608a 100644 --- a/drivers/platform/x86/amd/pmf/core.c +++ b/drivers/platform/x86/amd/pmf/core.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/pci.h> #include <linux/platform_device.h> +#include <linux/power_supply.h> #include "pmf.h" /* PMF-SMU communication registers */ @@ -45,6 +46,14 @@ #define DELAY_MIN_US 2000 #define DELAY_MAX_US 3000 +int amd_pmf_get_power_source(void) +{ + if (power_supply_is_system_supplied() > 0) + return POWER_SOURCE_AC; + else + return POWER_SOURCE_DC; +} + static inline u32 amd_pmf_reg_read(struct amd_pmf_dev *dev, int reg_offset) { return ioread32(dev->regbase + reg_offset); @@ -138,6 +147,21 @@ static const struct pci_device_id pmf_pci_ids[] = { { } }; +static void amd_pmf_init_features(struct amd_pmf_dev *dev) +{ + /* Enable Static Slider */ + if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) { + amd_pmf_init_sps(dev); + dev_dbg(dev->dev, "SPS enabled and Platform Profiles registered\n"); + } +} + +static void amd_pmf_deinit_features(struct amd_pmf_dev *dev) +{ + if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) + amd_pmf_deinit_sps(dev); +} + static const struct acpi_device_id amd_pmf_acpi_ids[] = { {"AMDI0102", 0}, { } @@ -206,6 +230,7 @@ static int amd_pmf_probe(struct platform_device *pdev) apmf_acpi_init(dev); platform_set_drvdata(pdev, dev); + amd_pmf_init_features(dev); mutex_init(&dev->lock); dev_info(dev->dev, "registered PMF device successfully\n"); @@ -218,6 +243,7 @@ static int amd_pmf_remove(struct platform_device *pdev) struct amd_pmf_dev *dev = platform_get_drvdata(pdev); mutex_destroy(&dev->lock); + amd_pmf_deinit_features(dev); kfree(dev->buf); return 0; } diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h index bdadbff168ee..5c867dac7d44 100644 --- a/drivers/platform/x86/amd/pmf/pmf.h +++ b/drivers/platform/x86/amd/pmf/pmf.h @@ -12,10 +12,12 @@ #define PMF_H #include <linux/acpi.h> +#include <linux/platform_profile.h> /* APMF Functions */ #define APMF_FUNC_VERIFY_INTERFACE 0 #define APMF_FUNC_GET_SYS_PARAMS 1 +#define APMF_FUNC_STATIC_SLIDER_GRANULAR 9 /* Message Definitions */ #define SET_SPL 0x03 /* SPL: Sustained Power Limit */ @@ -36,6 +38,8 @@ #define GET_STT_LIMIT_APU 0x20 #define GET_STT_LIMIT_HS2 0x21 +#define ARG_NONE 0 + /* AMD PMF BIOS interfaces */ struct apmf_verify_interface { u16 size; @@ -51,6 +55,30 @@ struct apmf_system_params { u8 command_code; } __packed; +enum amd_stt_skin_temp { + STT_TEMP_APU, + STT_TEMP_HS2, + STT_TEMP_COUNT, +}; + +enum amd_slider_op { + SLIDER_OP_GET, + SLIDER_OP_SET, +}; + +enum power_source { + POWER_SOURCE_AC, + POWER_SOURCE_DC, + POWER_SOURCE_MAX, +}; + +enum power_modes { + POWER_MODE_PERFORMANCE, + POWER_MODE_BALANCED_POWER, + POWER_MODE_POWER_SAVER, + POWER_MODE_MAX, +}; + struct amd_pmf_dev { void __iomem *regbase; void __iomem *smu_virt_addr; @@ -60,10 +88,46 @@ struct amd_pmf_dev { struct device *dev; struct mutex lock; /* protects the PMF interface */ u32 supported_func; + enum platform_profile_option current_profile; + struct platform_profile_handler pprof; +}; + +struct apmf_sps_prop_granular { + u32 fppt; + u32 sppt; + u32 sppt_apu_only; + u32 spl; + u32 stt_min; + u8 stt_skin_temp[STT_TEMP_COUNT]; + u32 fan_id; +} __packed; + +/* Static Slider */ +struct apmf_static_slider_granular_output { + u16 size; + struct apmf_sps_prop_granular prop[POWER_SOURCE_MAX * POWER_MODE_MAX]; +} __packed; + +struct amd_pmf_static_slider_granular { + u16 size; + struct apmf_sps_prop_granular prop[POWER_SOURCE_MAX][POWER_MODE_MAX]; }; /* Core Layer */ int apmf_acpi_init(struct amd_pmf_dev *pmf_dev); +int is_apmf_func_supported(struct amd_pmf_dev *pdev, unsigned long index); int amd_pmf_send_cmd(struct amd_pmf_dev *dev, u8 message, bool get, u32 arg, u32 *data); +int amd_pmf_get_power_source(void); + +/* SPS Layer */ +u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf); +void amd_pmf_update_slider(struct amd_pmf_dev *dev, bool op, int idx, + struct amd_pmf_static_slider_granular *table); +int amd_pmf_init_sps(struct amd_pmf_dev *dev); +void amd_pmf_deinit_sps(struct amd_pmf_dev *dev); +int apmf_get_static_slider_granular(struct amd_pmf_dev *pdev, + struct apmf_static_slider_granular_output *output); +void amd_pmf_load_defaults_sps(struct amd_pmf_dev *dev); + #endif /* PMF_H */ diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c new file mode 100644 index 000000000000..ef4df3fd774b --- /dev/null +++ b/drivers/platform/x86/amd/pmf/sps.c @@ -0,0 +1,149 @@ +// 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> + */ + +#include "pmf.h" + +static int amd_pmf_profile_get(struct platform_profile_handler *pprof, + enum platform_profile_option *profile); +static int amd_pmf_profile_set(struct platform_profile_handler *pprof, + enum platform_profile_option profile); +static struct amd_pmf_static_slider_granular config_store; + +void amd_pmf_load_defaults_sps(struct amd_pmf_dev *dev) +{ + struct apmf_static_slider_granular_output output; + int i, j, idx = 0; + + memset(&config_store, 0, sizeof(config_store)); + apmf_get_static_slider_granular(dev, &output); + + 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++; + } + } +} + +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(); + + 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]); + } +} + +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); + + *profile = pmf->current_profile; + return 0; +} + +u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf) +{ + u8 mode; + + 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; + } + + return mode; +} + +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; + + pmf->current_profile = profile; + mode = amd_pmf_get_pprof_modes(pmf); + amd_pmf_update_slider(pmf, SLIDER_OP_SET, mode, NULL); + return 0; +} + +int amd_pmf_init_sps(struct amd_pmf_dev *dev) +{ + int err = 0; + + dev->pprof.profile_get = amd_pmf_profile_get; + dev->pprof.profile_set = amd_pmf_profile_set; + + /* 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); + + /* 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); + return -EEXIST; + } + + dev->current_profile = PLATFORM_PROFILE_BALANCED; + amd_pmf_load_defaults_sps(dev); + + return err; +} + +void amd_pmf_deinit_sps(struct amd_pmf_dev *dev) +{ + platform_profile_remove(); +}
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. Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> --- drivers/platform/x86/amd/pmf/Makefile | 2 +- drivers/platform/x86/amd/pmf/acpi.c | 10 ++ drivers/platform/x86/amd/pmf/core.c | 26 +++++ drivers/platform/x86/amd/pmf/pmf.h | 64 +++++++++++ drivers/platform/x86/amd/pmf/sps.c | 149 ++++++++++++++++++++++++++ 5 files changed, 250 insertions(+), 1 deletion(-) create mode 100644 drivers/platform/x86/amd/pmf/sps.c