// SPDX-License-Identifier: GPL-2.0-or-later /* * Freescale i.MX7D ADC driver * * Copyright (C) 2015 Freescale Semiconductor, Inc. */ #include <linux/clk.h> #include <linux/completion.h> #include <linux/err.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/platform_device.h> #include <linux/regulator/consumer.h> #include <linux/iio/iio.h> #include <linux/iio/driver.h> #include <linux/iio/sysfs.h> /* ADC register */ #define IMX7D_REG_ADC_CH_A_CFG1 … #define IMX7D_REG_ADC_CH_A_CFG2 … #define IMX7D_REG_ADC_CH_B_CFG1 … #define IMX7D_REG_ADC_CH_B_CFG2 … #define IMX7D_REG_ADC_CH_C_CFG1 … #define IMX7D_REG_ADC_CH_C_CFG2 … #define IMX7D_REG_ADC_CH_D_CFG1 … #define IMX7D_REG_ADC_CH_D_CFG2 … #define IMX7D_REG_ADC_CH_SW_CFG … #define IMX7D_REG_ADC_TIMER_UNIT … #define IMX7D_REG_ADC_DMA_FIFO … #define IMX7D_REG_ADC_FIFO_STATUS … #define IMX7D_REG_ADC_INT_SIG_EN … #define IMX7D_REG_ADC_INT_EN … #define IMX7D_REG_ADC_INT_STATUS … #define IMX7D_REG_ADC_CHA_B_CNV_RSLT … #define IMX7D_REG_ADC_CHC_D_CNV_RSLT … #define IMX7D_REG_ADC_CH_SW_CNV_RSLT … #define IMX7D_REG_ADC_DMA_FIFO_DAT … #define IMX7D_REG_ADC_ADC_CFG … #define IMX7D_REG_ADC_CHANNEL_CFG2_BASE … #define IMX7D_EACH_CHANNEL_REG_OFFSET … #define IMX7D_REG_ADC_CH_CFG1_CHANNEL_EN … #define IMX7D_REG_ADC_CH_CFG1_CHANNEL_SINGLE … #define IMX7D_REG_ADC_CH_CFG1_CHANNEL_AVG_EN … #define IMX7D_REG_ADC_CH_CFG1_CHANNEL_SEL(x) … #define IMX7D_REG_ADC_CH_CFG2_AVG_NUM_4 … #define IMX7D_REG_ADC_CH_CFG2_AVG_NUM_8 … #define IMX7D_REG_ADC_CH_CFG2_AVG_NUM_16 … #define IMX7D_REG_ADC_CH_CFG2_AVG_NUM_32 … #define IMX7D_REG_ADC_TIMER_UNIT_PRE_DIV_4 … #define IMX7D_REG_ADC_TIMER_UNIT_PRE_DIV_8 … #define IMX7D_REG_ADC_TIMER_UNIT_PRE_DIV_16 … #define IMX7D_REG_ADC_TIMER_UNIT_PRE_DIV_32 … #define IMX7D_REG_ADC_TIMER_UNIT_PRE_DIV_64 … #define IMX7D_REG_ADC_TIMER_UNIT_PRE_DIV_128 … #define IMX7D_REG_ADC_ADC_CFG_ADC_CLK_DOWN … #define IMX7D_REG_ADC_ADC_CFG_ADC_POWER_DOWN … #define IMX7D_REG_ADC_ADC_CFG_ADC_EN … #define IMX7D_REG_ADC_INT_CHA_COV_INT_EN … #define IMX7D_REG_ADC_INT_CHB_COV_INT_EN … #define IMX7D_REG_ADC_INT_CHC_COV_INT_EN … #define IMX7D_REG_ADC_INT_CHD_COV_INT_EN … #define IMX7D_REG_ADC_INT_CHANNEL_INT_EN … #define IMX7D_REG_ADC_INT_STATUS_CHANNEL_INT_STATUS … #define IMX7D_REG_ADC_INT_STATUS_CHANNEL_CONV_TIME_OUT … #define IMX7D_ADC_TIMEOUT … #define IMX7D_ADC_INPUT_CLK … enum imx7d_adc_clk_pre_div { … }; enum imx7d_adc_average_num { … }; struct imx7d_adc_feature { … }; struct imx7d_adc { … }; struct imx7d_adc_analogue_core_clk { … }; #define IMX7D_ADC_ANALOGUE_CLK_CONFIG(_pre_div, _reg_conf) … static const struct imx7d_adc_analogue_core_clk imx7d_adc_analogue_clk[] = …; #define IMX7D_ADC_CHAN(_idx) … static const struct iio_chan_spec imx7d_adc_iio_channels[] = …; static const u32 imx7d_adc_average_num[] = …; static void imx7d_adc_feature_config(struct imx7d_adc *info) { … } static void imx7d_adc_sample_rate_set(struct imx7d_adc *info) { … } static void imx7d_adc_hw_init(struct imx7d_adc *info) { … } static void imx7d_adc_channel_set(struct imx7d_adc *info) { … } static u32 imx7d_adc_get_sample_rate(struct imx7d_adc *info) { … } static int imx7d_adc_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int imx7d_adc_read_data(struct imx7d_adc *info) { … } static irqreturn_t imx7d_adc_isr(int irq, void *dev_id) { … } static int imx7d_adc_reg_access(struct iio_dev *indio_dev, unsigned reg, unsigned writeval, unsigned *readval) { … } static const struct iio_info imx7d_adc_iio_info = …; static const struct of_device_id imx7d_adc_match[] = …; MODULE_DEVICE_TABLE(of, imx7d_adc_match); static void imx7d_adc_power_down(struct imx7d_adc *info) { … } static int imx7d_adc_enable(struct device *dev) { … } static int imx7d_adc_disable(struct device *dev) { … } static void __imx7d_adc_disable(void *data) { … } static int imx7d_adc_probe(struct platform_device *pdev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_disable, imx7d_adc_enable); static struct platform_driver imx7d_adc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux