// SPDX-License-Identifier: GPL-2.0-or-later /* * Freescale Vybrid vf610 ADC driver * * Copyright 2013 Freescale Semiconductor, Inc. */ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/property.h> #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/io.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/regulator/consumer.h> #include <linux/err.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> #include <linux/iio/sysfs.h> #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> /* This will be the driver name the kernel reports */ #define DRIVER_NAME … /* Vybrid/IMX ADC registers */ #define VF610_REG_ADC_HC0 … #define VF610_REG_ADC_HC1 … #define VF610_REG_ADC_HS … #define VF610_REG_ADC_R0 … #define VF610_REG_ADC_R1 … #define VF610_REG_ADC_CFG … #define VF610_REG_ADC_GC … #define VF610_REG_ADC_GS … #define VF610_REG_ADC_CV … #define VF610_REG_ADC_OFS … #define VF610_REG_ADC_CAL … #define VF610_REG_ADC_PCTL … /* Configuration register field define */ #define VF610_ADC_MODE_BIT8 … #define VF610_ADC_MODE_BIT10 … #define VF610_ADC_MODE_BIT12 … #define VF610_ADC_MODE_MASK … #define VF610_ADC_BUSCLK2_SEL … #define VF610_ADC_ALTCLK_SEL … #define VF610_ADC_ADACK_SEL … #define VF610_ADC_ADCCLK_MASK … #define VF610_ADC_CLK_DIV2 … #define VF610_ADC_CLK_DIV4 … #define VF610_ADC_CLK_DIV8 … #define VF610_ADC_CLK_MASK … #define VF610_ADC_ADLSMP_LONG … #define VF610_ADC_ADSTS_SHORT … #define VF610_ADC_ADSTS_NORMAL … #define VF610_ADC_ADSTS_LONG … #define VF610_ADC_ADSTS_MASK … #define VF610_ADC_ADLPC_EN … #define VF610_ADC_ADHSC_EN … #define VF610_ADC_REFSEL_VALT … #define VF610_ADC_REFSEL_VBG … #define VF610_ADC_ADTRG_HARD … #define VF610_ADC_AVGS_8 … #define VF610_ADC_AVGS_16 … #define VF610_ADC_AVGS_32 … #define VF610_ADC_AVGS_MASK … #define VF610_ADC_OVWREN … /* General control register field define */ #define VF610_ADC_ADACKEN … #define VF610_ADC_DMAEN … #define VF610_ADC_ACREN … #define VF610_ADC_ACFGT … #define VF610_ADC_ACFE … #define VF610_ADC_AVGEN … #define VF610_ADC_ADCON … #define VF610_ADC_CAL … /* Other field define */ #define VF610_ADC_ADCHC(x) … #define VF610_ADC_AIEN … #define VF610_ADC_CONV_DISABLE … #define VF610_ADC_HS_COCO0 … #define VF610_ADC_CALF … #define VF610_ADC_TIMEOUT … #define DEFAULT_SAMPLE_TIME … /* V at 25°C of 696 mV */ #define VF610_VTEMP25_3V0 … /* V at 25°C of 699 mV */ #define VF610_VTEMP25_3V3 … /* Typical sensor slope coefficient at all temperatures */ #define VF610_TEMP_SLOPE_COEFF … enum clk_sel { … }; enum vol_ref { … }; enum average_sel { … }; enum conversion_mode_sel { … }; enum lst_adder_sel { … }; struct vf610_adc_feature { … }; struct vf610_adc { … }; static const u32 vf610_hw_avgs[] = …; static const u32 vf610_lst_adder[] = …; static inline void vf610_adc_calculate_rates(struct vf610_adc *info) { … } static inline void vf610_adc_cfg_init(struct vf610_adc *info) { … } static void vf610_adc_cfg_post_set(struct vf610_adc *info) { … } static void vf610_adc_calibration(struct vf610_adc *info) { … } static void vf610_adc_cfg_set(struct vf610_adc *info) { … } static void vf610_adc_sample_set(struct vf610_adc *info) { … } static void vf610_adc_hw_init(struct vf610_adc *info) { … } static int vf610_set_conversion_mode(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, unsigned int mode) { … } static int vf610_get_conversion_mode(struct iio_dev *indio_dev, const struct iio_chan_spec *chan) { … } static const char * const vf610_conv_modes[] = …; static const struct iio_enum vf610_conversion_mode = …; static const struct iio_chan_spec_ext_info vf610_ext_info[] = …; #define VF610_ADC_CHAN(_idx, _chan_type) … #define VF610_ADC_TEMPERATURE_CHAN(_idx, _chan_type) … static const struct iio_chan_spec vf610_adc_iio_channels[] = …; static int vf610_adc_read_data(struct vf610_adc *info) { … } static irqreturn_t vf610_adc_isr(int irq, void *dev_id) { … } static ssize_t vf610_show_samp_freq_avail(struct device *dev, struct device_attribute *attr, char *buf) { … } static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(vf610_show_samp_freq_avail); static struct attribute *vf610_attributes[] = …; static const struct attribute_group vf610_attribute_group = …; static int vf610_read_sample(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val) { … } static int vf610_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int vf610_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int vf610_adc_buffer_postenable(struct iio_dev *indio_dev) { … } static int vf610_adc_buffer_predisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = …; static int vf610_adc_reg_access(struct iio_dev *indio_dev, unsigned reg, unsigned writeval, unsigned *readval) { … } static const struct iio_info vf610_adc_iio_info = …; static const struct of_device_id vf610_adc_match[] = …; MODULE_DEVICE_TABLE(of, vf610_adc_match); static int vf610_adc_probe(struct platform_device *pdev) { … } static void vf610_adc_remove(struct platform_device *pdev) { … } static int vf610_adc_suspend(struct device *dev) { … } static int vf610_adc_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(vf610_adc_pm_ops, vf610_adc_suspend, vf610_adc_resume); static struct platform_driver vf610_adc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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