// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2020 MaxLinear, Inc. * * This driver is a hardware monitoring driver for PVT controller * (MR75203) which is used to configure & control Moortec embedded * analog IP to enable multiple embedded temperature sensor(TS), * voltage monitor(VM) & process detector(PD) modules. */ #include <linux/bits.h> #include <linux/clk.h> #include <linux/debugfs.h> #include <linux/hwmon.h> #include <linux/kstrtox.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/mutex.h> #include <linux/platform_device.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/reset.h> #include <linux/slab.h> #include <linux/units.h> /* PVT Common register */ #define PVT_IP_CONFIG … #define TS_NUM_MSK … #define TS_NUM_SFT … #define PD_NUM_MSK … #define PD_NUM_SFT … #define VM_NUM_MSK … #define VM_NUM_SFT … #define CH_NUM_MSK … #define CH_NUM_SFT … #define VM_NUM_MAX … /* Macro Common Register */ #define CLK_SYNTH … #define CLK_SYNTH_LO_SFT … #define CLK_SYNTH_HI_SFT … #define CLK_SYNTH_HOLD_SFT … #define CLK_SYNTH_EN … #define CLK_SYS_CYCLES_MAX … #define CLK_SYS_CYCLES_MIN … #define SDIF_DISABLE … #define SDIF_STAT … #define SDIF_BUSY … #define SDIF_LOCK … #define SDIF_W … #define SDIF_PROG … #define SDIF_WRN_W … #define SDIF_WRN_R … #define SDIF_ADDR_SFT … #define SDIF_HALT … #define SDIF_CTRL … #define SDIF_SMPL_CTRL … /* TS & PD Individual Macro Register */ #define COM_REG_SIZE … #define SDIF_DONE(n) … #define SDIF_SMPL_DONE … #define SDIF_DATA(n) … #define SAMPLE_DATA_MSK … #define HILO_RESET(n) … /* VM Individual Macro Register */ #define VM_COM_REG_SIZE … #define VM_SDIF_DONE(vm) … #define VM_SDIF_DATA(vm, ch) … /* SDA Slave Register */ #define IP_CTRL … #define IP_RST_REL … #define IP_RUN_CONT … #define IP_AUTO … #define IP_VM_MODE … #define IP_CFG … #define CFG0_MODE_2 … #define CFG0_PARALLEL_OUT … #define CFG0_12_BIT … #define CFG1_VOL_MEAS_MODE … #define CFG1_PARALLEL_OUT … #define CFG1_14_BIT … #define IP_DATA … #define IP_POLL … #define VM_CH_INIT … #define VM_CH_REQ … #define IP_TMR … #define POWER_DELAY_CYCLE_256 … #define POWER_DELAY_CYCLE_64 … #define PVT_POLL_DELAY_US … #define PVT_POLL_TIMEOUT_US … #define PVT_CONV_BITS … #define PVT_N_CONST … #define PVT_R_CONST … #define PVT_TEMP_MIN_mC … #define PVT_TEMP_MAX_mC … /* Temperature coefficients for series 5 */ #define PVT_SERIES5_H_CONST … #define PVT_SERIES5_G_CONST … #define PVT_SERIES5_J_CONST … #define PVT_SERIES5_CAL5_CONST … /* Temperature coefficients for series 6 */ #define PVT_SERIES6_H_CONST … #define PVT_SERIES6_G_CONST … #define PVT_SERIES6_J_CONST … #define PVT_SERIES6_CAL5_CONST … #define TEMPERATURE_SENSOR_SERIES_5 … #define TEMPERATURE_SENSOR_SERIES_6 … #define PRE_SCALER_X1 … #define PRE_SCALER_X2 … /** * struct voltage_device - VM single input parameters. * @vm_map: Map channel number to VM index. * @ch_map: Map channel number to channel index. * @pre_scaler: Pre scaler value (1 or 2) used to normalize the voltage output * result. * * The structure provides mapping between channel-number (0..N-1) to VM-index * (0..num_vm-1) and channel-index (0..ch_num-1) where N = num_vm * ch_num. * It also provides normalization factor for the VM equation. */ struct voltage_device { … }; /** * struct voltage_channels - VM channel count. * @total: Total number of channels in all VMs. * @max: Maximum number of channels among all VMs. * * The structure provides channel count information across all VMs. */ struct voltage_channels { … }; struct temp_coeff { … }; struct pvt_device { … }; static ssize_t pvt_ts_coeff_j_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static ssize_t pvt_ts_coeff_j_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations pvt_ts_coeff_j_fops = …; static void devm_pvt_ts_dbgfs_remove(void *data) { … } static int pvt_ts_dbgfs_create(struct pvt_device *pvt, struct device *dev) { … } static umode_t pvt_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static long pvt_calc_temp(struct pvt_device *pvt, u32 nbs) { … } static int pvt_read_temp(struct device *dev, u32 attr, int channel, long *val) { … } static int pvt_read_in(struct device *dev, u32 attr, int channel, long *val) { … } static int pvt_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { … } static struct hwmon_channel_info pvt_temp = …; static struct hwmon_channel_info pvt_in = …; static const struct hwmon_ops pvt_hwmon_ops = …; static struct hwmon_chip_info pvt_chip_info = …; static int pvt_init(struct pvt_device *pvt) { … } static struct regmap_config pvt_regmap_config = …; static int pvt_get_regmap(struct platform_device *pdev, char *reg_name, struct pvt_device *pvt) { … } static void pvt_reset_control_assert(void *data) { … } static int pvt_reset_control_deassert(struct device *dev, struct pvt_device *pvt) { … } static int pvt_get_active_channel(struct device *dev, struct pvt_device *pvt, u32 vm_num, u32 ch_num, u8 *vm_idx) { … } static int pvt_get_pre_scaler(struct device *dev, struct pvt_device *pvt) { … } static int pvt_set_temp_coeff(struct device *dev, struct pvt_device *pvt) { … } static int mr75203_probe(struct platform_device *pdev) { … } static const struct of_device_id moortec_pvt_of_match[] = …; MODULE_DEVICE_TABLE(of, moortec_pvt_of_match); static struct platform_driver moortec_pvt_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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