// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2022 MediaTek Inc. * Copyright (C) 2022 Collabora Ltd. * AngeloGioacchino Del Regno <[email protected]> */ #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/cpu.h> #include <linux/cpuidle.h> #include <linux/debugfs.h> #include <linux/device.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/nvmem-consumer.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/pm_domain.h> #include <linux/pm_opp.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/reset.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/thermal.h> /* svs bank mode support */ #define SVSB_MODE_ALL_DISABLE … #define SVSB_MODE_INIT01 … #define SVSB_MODE_INIT02 … #define SVSB_MODE_MON … /* svs bank volt flags */ #define SVSB_INIT01_PD_REQ … #define SVSB_INIT01_VOLT_IGNORE … #define SVSB_INIT01_VOLT_INC_ONLY … #define SVSB_MON_VOLT_IGNORE … #define SVSB_REMOVE_DVTFIXED_VOLT … /* svs bank register fields and common configuration */ #define SVSB_PTPCONFIG_DETMAX … #define SVSB_DET_MAX … #define SVSB_DET_WINDOW … /* DESCHAR */ #define SVSB_DESCHAR_FLD_MDES … #define SVSB_DESCHAR_FLD_BDES … /* TEMPCHAR */ #define SVSB_TEMPCHAR_FLD_DVT_FIXED … #define SVSB_TEMPCHAR_FLD_MTDES … #define SVSB_TEMPCHAR_FLD_VCO … /* DETCHAR */ #define SVSB_DETCHAR_FLD_DCMDET … #define SVSB_DETCHAR_FLD_DCBDET … /* SVSEN (PTPEN) */ #define SVSB_PTPEN_INIT01 … #define SVSB_PTPEN_MON … #define SVSB_PTPEN_INIT02 … #define SVSB_PTPEN_OFF … /* FREQPCTS */ #define SVSB_FREQPCTS_FLD_PCT0_4 … #define SVSB_FREQPCTS_FLD_PCT1_5 … #define SVSB_FREQPCTS_FLD_PCT2_6 … #define SVSB_FREQPCTS_FLD_PCT3_7 … /* INTSTS */ #define SVSB_INTSTS_VAL_CLEAN … #define SVSB_INTSTS_F0_COMPLETE … #define SVSB_INTSTS_FLD_MONVOP … #define SVSB_RUNCONFIG_DEFAULT … /* LIMITVALS */ #define SVSB_LIMITVALS_FLD_DTLO … #define SVSB_LIMITVALS_FLD_DTHI … #define SVSB_LIMITVALS_FLD_VMIN … #define SVSB_LIMITVALS_FLD_VMAX … #define SVSB_VAL_DTHI … #define SVSB_VAL_DTLO … /* INTEN */ #define SVSB_INTEN_F0EN … #define SVSB_INTEN_DACK0UPEN … #define SVSB_INTEN_DC0EN … #define SVSB_INTEN_DC1EN … #define SVSB_INTEN_DACK0LOEN … #define SVSB_INTEN_INITPROD_OVF_EN … #define SVSB_INTEN_INITSUM_OVF_EN … #define SVSB_INTEN_MONVOPEN … #define SVSB_INTEN_INIT0x … /* TSCALCS */ #define SVSB_TSCALCS_FLD_MTS … #define SVSB_TSCALCS_FLD_BTS … /* INIT2VALS */ #define SVSB_INIT2VALS_FLD_DCVOFFSETIN … #define SVSB_INIT2VALS_FLD_AGEVOFFSETIN … /* VOPS */ #define SVSB_VOPS_FLD_VOP0_4 … #define SVSB_VOPS_FLD_VOP1_5 … #define SVSB_VOPS_FLD_VOP2_6 … #define SVSB_VOPS_FLD_VOP3_7 … /* SVS Thermal Coefficients */ #define SVSB_TS_COEFF_MT8195 … #define SVSB_TS_COEFF_MT8186 … /* Algo helpers */ #define FUSE_DATA_NOT_VALID … /* svs bank related setting */ #define BITS8 … #define MAX_OPP_ENTRIES … #define REG_BYTES … #define SVSB_DC_SIGNED_BIT … #define SVSB_DET_CLK_EN … #define SVSB_TEMP_LOWER_BOUND … #define SVSB_TEMP_UPPER_BOUND … static DEFINE_SPINLOCK(svs_lock); #ifdef CONFIG_DEBUG_FS #define debug_fops_ro(name) … #define debug_fops_rw(name) … #define svs_dentry_data(name) … #endif /** * enum svsb_sw_id - SVS Bank Software ID * @SVSB_SWID_CPU_LITTLE: CPU little cluster Bank * @SVSB_SWID_CPU_BIG: CPU big cluster Bank * @SVSB_SWID_CCI: Cache Coherent Interconnect Bank * @SVSB_SWID_GPU: GPU Bank * @SVSB_SWID_MAX: Total number of Banks */ enum svsb_sw_id { … }; /** * enum svsb_type - SVS Bank 2-line: Type and Role * @SVSB_TYPE_NONE: One-line type Bank - Global role * @SVSB_TYPE_LOW: Two-line type Bank - Low bank role * @SVSB_TYPE_HIGH: Two-line type Bank - High bank role * @SVSB_TYPE_MAX: Total number of bank types */ enum svsb_type { … }; /** * enum svsb_phase - svs bank phase enumeration * @SVSB_PHASE_ERROR: svs bank encounters unexpected condition * @SVSB_PHASE_INIT01: svs bank basic init for data calibration * @SVSB_PHASE_INIT02: svs bank can provide voltages to opp table * @SVSB_PHASE_MON: svs bank can provide voltages with thermal effect * @SVSB_PHASE_MAX: total number of svs bank phase (debug purpose) * * Each svs bank has its own independent phase and we enable each svs bank by * running their phase orderly. However, when svs bank encounters unexpected * condition, it will fire an irq (PHASE_ERROR) to inform svs software. * * svs bank general phase-enabled order: * SVSB_PHASE_INIT01 -> SVSB_PHASE_INIT02 -> SVSB_PHASE_MON */ enum svsb_phase { … }; enum svs_reg_index { … }; static const u32 svs_regs_v2[] = …; static const char * const svs_swid_names[SVSB_SWID_MAX] = …; static const char * const svs_type_names[SVSB_TYPE_MAX] = …; enum svs_fusemap_dev { … }; enum svs_fusemap_glb { … }; struct svs_fusemap { … }; /** * struct svs_platform - svs platform control * @base: svs platform register base * @dev: svs platform device * @main_clk: main clock for svs bank * @banks: svs banks that svs platform supports * @rst: svs platform reset control * @efuse_max: total number of svs efuse * @tefuse_max: total number of thermal efuse * @regs: svs platform registers map * @efuse: svs efuse data received from NVMEM framework * @tefuse: thermal efuse data received from NVMEM framework * @ts_coeff: thermal sensors coefficient * @bank_max: total number of svs banks */ struct svs_platform { … }; struct svs_platform_data { … }; /** * struct svs_bank_pdata - SVS Bank immutable config parameters * @dev_fuse_map: Bank fuse map data * @buck_name: Regulator name * @tzone_name: Thermal zone name * @age_config: Bank age configuration * @ctl0: TS-x selection * @dc_config: Bank dc configuration * @int_st: Bank interrupt identification * @turn_freq_base: Reference frequency for 2-line turn point * @tzone_htemp: Thermal zone high temperature threshold * @tzone_ltemp: Thermal zone low temperature threshold * @volt_step: Bank voltage step * @volt_base: Bank voltage base * @tzone_htemp_voffset: Thermal zone high temperature voltage offset * @tzone_ltemp_voffset: Thermal zone low temperature voltage offset * @chk_shift: Bank chicken shift * @cpu_id: CPU core ID for SVS CPU bank use only * @opp_count: Bank opp count * @vboot: Voltage request for bank init01 only * @vco: Bank VCO value * @sw_id: Bank software identification * @type: SVS Bank Type (1 or 2-line) and Role (high/low) * @set_freq_pct: function pointer to set bank frequency percent table * @get_volts: function pointer to get bank voltages */ struct svs_bank_pdata { … }; /** * struct svs_bank - svs bank representation * @pdata: SVS Bank immutable config parameters * @dev: bank device * @opp_dev: device for opp table/buck control * @init_completion: the timeout completion for bank init * @buck: regulator used by opp_dev * @tzd: thermal zone device for getting temperature * @lock: mutex lock to protect voltage update process * @name: bank name * @phase: bank current phase * @volt_od: bank voltage overdrive * @reg_data: bank register data in different phase for debug purpose * @pm_runtime_enabled_count: bank pm runtime enabled count * @mode_support: bank mode support * @freq_base: reference frequency for bank init * @opp_dfreq: default opp frequency table * @opp_dvolt: default opp voltage table * @freq_pct: frequency percent table for bank init * @volt: bank voltage table * @volt_flags: bank voltage flags * @vmax: bank voltage maximum * @vmin: bank voltage minimum * @age_voffset_in: bank age voltage offset * @dc_voffset_in: bank dc voltage offset * @dvt_fixed: bank dvt fixed value * @core_sel: bank selection * @temp: bank temperature * @bts: svs efuse data * @mts: svs efuse data * @bdes: svs efuse data * @mdes: svs efuse data * @mtdes: svs efuse data * @dcbdet: svs efuse data * @dcmdet: svs efuse data * @turn_pt: 2-line turn point tells which opp_volt calculated by high/low bank * @vbin_turn_pt: voltage bin turn point helps know which svsb_volt should be overridden * * Svs bank will generate suitable voltages by below general math equation * and provide these voltages to opp voltage table. * * opp_volt[i] = (volt[i] * volt_step) + volt_base; */ struct svs_bank { … }; static u32 percent(u32 numerator, u32 denominator) { … } static u32 svs_readl_relaxed(struct svs_platform *svsp, enum svs_reg_index rg_i) { … } static void svs_writel_relaxed(struct svs_platform *svsp, u32 val, enum svs_reg_index rg_i) { … } static void svs_switch_bank(struct svs_platform *svsp, struct svs_bank *svsb) { … } static u32 svs_bank_volt_to_opp_volt(u32 svsb_volt, u32 svsb_volt_step, u32 svsb_volt_base) { … } static u32 svs_opp_volt_to_bank_volt(u32 opp_u_volt, u32 svsb_volt_step, u32 svsb_volt_base) { … } static int svs_sync_bank_volts_from_opp(struct svs_bank *svsb) { … } static int svs_adjust_pm_opp_volts(struct svs_bank *svsb) { … } static void svs_bank_disable_and_restore_default_volts(struct svs_platform *svsp, struct svs_bank *svsb) { … } #ifdef CONFIG_DEBUG_FS static int svs_dump_debug_show(struct seq_file *m, void *p) { … } debug_fops_ro(…); static int svs_enable_debug_show(struct seq_file *m, void *v) { … } static ssize_t svs_enable_debug_write(struct file *filp, const char __user *buffer, size_t count, loff_t *pos) { … } debug_fops_rw(…); static int svs_status_debug_show(struct seq_file *m, void *v) { … } debug_fops_ro(…); static int svs_create_debug_cmds(struct svs_platform *svsp) { … } #endif /* CONFIG_DEBUG_FS */ static u32 interpolate(u32 f0, u32 f1, u32 v0, u32 v1, u32 fx) { … } static void svs_get_bank_volts_v3(struct svs_platform *svsp, struct svs_bank *svsb) { … } static void svs_set_bank_freq_pct_v3(struct svs_platform *svsp, struct svs_bank *svsb) { … } static void svs_get_bank_volts_v2(struct svs_platform *svsp, struct svs_bank *svsb) { … } static void svs_set_bank_freq_pct_v2(struct svs_platform *svsp, struct svs_bank *svsb) { … } static void svs_set_bank_phase(struct svs_platform *svsp, unsigned int bank_idx, enum svsb_phase target_phase) { … } static inline void svs_save_bank_register_data(struct svs_platform *svsp, unsigned short bank_idx, enum svsb_phase phase) { … } static inline void svs_error_isr_handler(struct svs_platform *svsp, unsigned short bank_idx) { … } static inline void svs_init01_isr_handler(struct svs_platform *svsp, unsigned short bank_idx) { … } static inline void svs_init02_isr_handler(struct svs_platform *svsp, unsigned short bank_idx) { … } static inline void svs_mon_mode_isr_handler(struct svs_platform *svsp, unsigned short bank_idx) { … } static irqreturn_t svs_isr(int irq, void *data) { … } static bool svs_mode_available(struct svs_platform *svsp, u8 mode) { … } static int svs_init01(struct svs_platform *svsp) { … } static int svs_init02(struct svs_platform *svsp) { … } static void svs_mon_mode(struct svs_platform *svsp) { … } static int svs_start(struct svs_platform *svsp) { … } static int svs_suspend(struct device *dev) { … } static int svs_resume(struct device *dev) { … } static int svs_bank_resource_setup(struct svs_platform *svsp) { … } static int svs_get_efuse_data(struct svs_platform *svsp, const char *nvmem_cell_name, u32 **svsp_efuse, size_t *svsp_efuse_max) { … } static u32 svs_get_fuse_val(u32 *fuse_array, const struct svs_fusemap *fmap, u8 nbits) { … } static bool svs_is_available(struct svs_platform *svsp) { … } static bool svs_common_parse_efuse(struct svs_platform *svsp, const struct svs_platform_data *pdata) { … } static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp, const struct svs_platform_data *pdata) { … } static struct device *svs_get_subsys_device(struct svs_platform *svsp, const char *node_name) { … } static struct device *svs_add_device_link(struct svs_platform *svsp, const char *node_name) { … } static int svs_mt8192_platform_probe(struct svs_platform *svsp) { … } static int svs_mt8183_platform_probe(struct svs_platform *svsp) { … } static struct svs_bank svs_mt8195_banks[] = …; static struct svs_bank svs_mt8192_banks[] = …; static struct svs_bank svs_mt8188_banks[] = …; static struct svs_bank svs_mt8186_banks[] = …; static struct svs_bank svs_mt8183_banks[] = …; static const struct svs_platform_data svs_mt8195_platform_data = …; static const struct svs_platform_data svs_mt8192_platform_data = …; static const struct svs_platform_data svs_mt8188_platform_data = …; static const struct svs_platform_data svs_mt8186_platform_data = …; static const struct svs_platform_data svs_mt8183_platform_data = …; static const struct of_device_id svs_of_match[] = …; MODULE_DEVICE_TABLE(of, svs_of_match); static int svs_probe(struct platform_device *pdev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(svs_pm_ops, svs_suspend, svs_resume); static struct platform_driver svs_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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