// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2022 Richtek Technology Corp. * * ChiYuan Huang <[email protected]> */ #include <linux/bitops.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/sysfs.h> #include <linux/types.h> #include <linux/util_macros.h> #include <linux/iio/buffer.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #define RTQ6056_REG_CONFIG … #define RTQ6056_REG_SHUNTVOLT … #define RTQ6056_REG_BUSVOLT … #define RTQ6056_REG_POWER … #define RTQ6056_REG_CURRENT … #define RTQ6056_REG_CALIBRATION … #define RTQ6056_REG_MASKENABLE … #define RTQ6056_REG_ALERTLIMIT … #define RTQ6056_REG_MANUFACTID … #define RTQ6056_REG_DIEID … #define RTQ6056_VENDOR_ID … #define RTQ6056_DEFAULT_CONFIG … #define RTQ6056_CONT_ALLON … #define RTQ6059_DEFAULT_CONFIG … #define RTQ6059_VBUS_LSB_OFFSET … #define RTQ6059_AVG_BASE … enum { … }; /* * The enum is to present the 0x00 CONFIG RG bitfield for the 16bit RG value * field value order from LSB to MSB * RTQ6053/6 is OPMODE->VSHUNTCT->VBUSCT->AVG->RESET * RTQ6059 is OPMODE->SADC->BADC->PGA->RESET */ enum { … }; struct rtq6056_priv; struct richtek_dev_data { … }; struct rtq6056_priv { … }; static const struct reg_field rtq6056_reg_fields[F_MAX_FIELDS] = …; static const struct reg_field rtq6059_reg_fields[F_MAX_FIELDS] = …; static const struct iio_chan_spec rtq6056_channels[RTQ6056_MAX_CHANNEL + 1] = …; /* * Difference between RTQ6056 and RTQ6059 * - Fixed sampling conversion time * - Average sample numbers * - Channel scale * - calibration coefficient */ static const struct iio_chan_spec rtq6059_channels[RTQ6056_MAX_CHANNEL + 1] = …; static int rtq6056_adc_read_channel(struct rtq6056_priv *priv, struct iio_chan_spec const *ch, int *val) { … } static int rtq6056_adc_read_scale(struct iio_chan_spec const *ch, int *val, int *val2) { … } static int rtq6059_adc_read_scale(struct iio_chan_spec const *ch, int *val, int *val2) { … } /* * Sample frequency for channel VSHUNT and VBUS. The indices correspond * with the bit value expected by the chip. And it can be found at * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf */ static const int rtq6056_samp_freq_list[] = …; static int rtq6056_adc_set_samp_freq(struct rtq6056_priv *priv, struct iio_chan_spec const *ch, int val) { … } /* * Available averaging rate for rtq6056. The indices correspond with the bit * value expected by the chip. And it can be found at * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf */ static const int rtq6056_avg_sample_list[] = …; static const int rtq6059_avg_sample_list[] = …; static int rtq6056_adc_set_average(struct rtq6056_priv *priv, int val) { … } static int rtq6059_adc_set_average(struct rtq6056_priv *priv, int val) { … } static int rtq6056_adc_get_sample_freq(struct rtq6056_priv *priv, struct iio_chan_spec const *ch, int *val) { … } static int rtq6056_adc_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int rtq6056_adc_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, const int **vals, int *type, int *length, long mask) { … } static int rtq6056_adc_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static const char *rtq6056_channel_labels[RTQ6056_MAX_CHANNEL] = …; static int rtq6056_adc_read_label(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, char *label) { … } static int rtq6056_set_shunt_resistor(struct rtq6056_priv *priv, int resistor_uohm) { … } static ssize_t shunt_resistor_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t shunt_resistor_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static IIO_DEVICE_ATTR_RW(shunt_resistor, 0); static struct attribute *rtq6056_attributes[] = …; static const struct attribute_group rtq6056_attribute_group = …; static const struct iio_info rtq6056_info = …; static irqreturn_t rtq6056_buffer_trigger_handler(int irq, void *p) { … } static void rtq6056_enter_shutdown_state(void *dev) { … } static bool rtq6056_is_readable_reg(struct device *dev, unsigned int reg) { … } static bool rtq6056_is_writeable_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config rtq6056_regmap_config = …; static int rtq6056_probe(struct i2c_client *i2c) { … } static int rtq6056_runtime_suspend(struct device *dev) { … } static int rtq6056_runtime_resume(struct device *dev) { … } static DEFINE_RUNTIME_DEV_PM_OPS(rtq6056_pm_ops, rtq6056_runtime_suspend, rtq6056_runtime_resume, NULL); static const struct richtek_dev_data rtq6056_devdata = …; static const struct richtek_dev_data rtq6059_devdata = …; static const struct of_device_id rtq6056_device_match[] = …; MODULE_DEVICE_TABLE(of, rtq6056_device_match); static struct i2c_driver rtq6056_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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