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![Alexandru Ardelean](/assets/img/avatar_default.png)
This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
261 lines
6.4 KiB
C
261 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ADC driver for Basin Cove PMIC
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*
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* Copyright (C) 2012 Intel Corporation
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* Author: Bin Yang <bin.yang@intel.com>
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*
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* Rewritten for upstream by:
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* Vincent Pelletier <plr.vincent@gmail.com>
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* Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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*/
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#include <linux/bitops.h>
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#include <linux/completion.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/intel_soc_pmic.h>
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#include <linux/mfd/intel_soc_pmic_mrfld.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/iio/driver.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/machine.h>
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#include <asm/unaligned.h>
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#define BCOVE_GPADCREQ 0xDC
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#define BCOVE_GPADCREQ_BUSY BIT(0)
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#define BCOVE_GPADCREQ_IRQEN BIT(1)
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#define BCOVE_ADCIRQ_ALL ( \
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BCOVE_ADCIRQ_BATTEMP | \
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BCOVE_ADCIRQ_SYSTEMP | \
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BCOVE_ADCIRQ_BATTID | \
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BCOVE_ADCIRQ_VIBATT | \
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BCOVE_ADCIRQ_CCTICK)
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#define BCOVE_ADC_TIMEOUT msecs_to_jiffies(1000)
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static const u8 mrfld_adc_requests[] = {
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BCOVE_ADCIRQ_VIBATT,
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BCOVE_ADCIRQ_BATTID,
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BCOVE_ADCIRQ_VIBATT,
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BCOVE_ADCIRQ_SYSTEMP,
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BCOVE_ADCIRQ_BATTEMP,
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BCOVE_ADCIRQ_BATTEMP,
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BCOVE_ADCIRQ_SYSTEMP,
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BCOVE_ADCIRQ_SYSTEMP,
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BCOVE_ADCIRQ_SYSTEMP,
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};
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struct mrfld_adc {
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struct regmap *regmap;
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struct completion completion;
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/* Lock to protect the IPC transfers */
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struct mutex lock;
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};
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static irqreturn_t mrfld_adc_thread_isr(int irq, void *data)
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{
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struct iio_dev *indio_dev = data;
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struct mrfld_adc *adc = iio_priv(indio_dev);
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complete(&adc->completion);
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return IRQ_HANDLED;
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}
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static int mrfld_adc_single_conv(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan,
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int *result)
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{
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struct mrfld_adc *adc = iio_priv(indio_dev);
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struct regmap *regmap = adc->regmap;
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unsigned int req;
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long timeout;
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__be16 value;
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int ret;
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reinit_completion(&adc->completion);
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regmap_update_bits(regmap, BCOVE_MADCIRQ, BCOVE_ADCIRQ_ALL, 0);
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regmap_update_bits(regmap, BCOVE_MIRQLVL1, BCOVE_LVL1_ADC, 0);
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ret = regmap_read_poll_timeout(regmap, BCOVE_GPADCREQ, req,
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!(req & BCOVE_GPADCREQ_BUSY),
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2000, 1000000);
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if (ret)
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goto done;
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req = mrfld_adc_requests[chan->channel];
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ret = regmap_write(regmap, BCOVE_GPADCREQ, BCOVE_GPADCREQ_IRQEN | req);
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if (ret)
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goto done;
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timeout = wait_for_completion_interruptible_timeout(&adc->completion,
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BCOVE_ADC_TIMEOUT);
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if (timeout < 0) {
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ret = timeout;
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goto done;
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}
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if (timeout == 0) {
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ret = -ETIMEDOUT;
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goto done;
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}
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ret = regmap_bulk_read(regmap, chan->address, &value, sizeof(value));
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if (ret)
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goto done;
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*result = be16_to_cpu(value);
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ret = IIO_VAL_INT;
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done:
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regmap_update_bits(regmap, BCOVE_MIRQLVL1, BCOVE_LVL1_ADC, 0xff);
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regmap_update_bits(regmap, BCOVE_MADCIRQ, BCOVE_ADCIRQ_ALL, 0xff);
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return ret;
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}
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static int mrfld_adc_read_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan,
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int *val, int *val2, long mask)
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{
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struct mrfld_adc *adc = iio_priv(indio_dev);
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int ret;
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switch (mask) {
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case IIO_CHAN_INFO_RAW:
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mutex_lock(&adc->lock);
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ret = mrfld_adc_single_conv(indio_dev, chan, val);
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mutex_unlock(&adc->lock);
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return ret;
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default:
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return -EINVAL;
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}
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}
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static const struct iio_info mrfld_adc_iio_info = {
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.read_raw = &mrfld_adc_read_raw,
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};
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#define BCOVE_ADC_CHANNEL(_type, _channel, _datasheet_name, _address) \
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{ \
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.indexed = 1, \
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.type = _type, \
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.channel = _channel, \
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.address = _address, \
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.datasheet_name = _datasheet_name, \
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
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}
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static const struct iio_chan_spec mrfld_adc_channels[] = {
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BCOVE_ADC_CHANNEL(IIO_VOLTAGE, 0, "CH0", 0xE9),
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BCOVE_ADC_CHANNEL(IIO_RESISTANCE, 1, "CH1", 0xEB),
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BCOVE_ADC_CHANNEL(IIO_CURRENT, 2, "CH2", 0xED),
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BCOVE_ADC_CHANNEL(IIO_TEMP, 3, "CH3", 0xCC),
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BCOVE_ADC_CHANNEL(IIO_TEMP, 4, "CH4", 0xC8),
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BCOVE_ADC_CHANNEL(IIO_TEMP, 5, "CH5", 0xCA),
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BCOVE_ADC_CHANNEL(IIO_TEMP, 6, "CH6", 0xC2),
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BCOVE_ADC_CHANNEL(IIO_TEMP, 7, "CH7", 0xC4),
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BCOVE_ADC_CHANNEL(IIO_TEMP, 8, "CH8", 0xC6),
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};
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static struct iio_map iio_maps[] = {
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IIO_MAP("CH0", "bcove-battery", "VBATRSLT"),
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IIO_MAP("CH1", "bcove-battery", "BATTID"),
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IIO_MAP("CH2", "bcove-battery", "IBATRSLT"),
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IIO_MAP("CH3", "bcove-temp", "PMICTEMP"),
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IIO_MAP("CH4", "bcove-temp", "BATTEMP0"),
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IIO_MAP("CH5", "bcove-temp", "BATTEMP1"),
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IIO_MAP("CH6", "bcove-temp", "SYSTEMP0"),
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IIO_MAP("CH7", "bcove-temp", "SYSTEMP1"),
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IIO_MAP("CH8", "bcove-temp", "SYSTEMP2"),
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{}
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};
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static int mrfld_adc_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent);
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struct iio_dev *indio_dev;
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struct mrfld_adc *adc;
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int irq;
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int ret;
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indio_dev = devm_iio_device_alloc(dev, sizeof(struct mrfld_adc));
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if (!indio_dev)
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return -ENOMEM;
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adc = iio_priv(indio_dev);
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mutex_init(&adc->lock);
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init_completion(&adc->completion);
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adc->regmap = pmic->regmap;
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irq = platform_get_irq(pdev, 0);
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if (irq < 0)
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return irq;
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ret = devm_request_threaded_irq(dev, irq, NULL, mrfld_adc_thread_isr,
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IRQF_ONESHOT | IRQF_SHARED, pdev->name,
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indio_dev);
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if (ret)
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return ret;
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platform_set_drvdata(pdev, indio_dev);
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indio_dev->name = pdev->name;
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indio_dev->channels = mrfld_adc_channels;
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indio_dev->num_channels = ARRAY_SIZE(mrfld_adc_channels);
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indio_dev->info = &mrfld_adc_iio_info;
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indio_dev->modes = INDIO_DIRECT_MODE;
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ret = iio_map_array_register(indio_dev, iio_maps);
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if (ret)
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return ret;
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ret = devm_iio_device_register(dev, indio_dev);
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if (ret < 0)
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goto err_array_unregister;
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return 0;
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err_array_unregister:
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iio_map_array_unregister(indio_dev);
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return ret;
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}
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static int mrfld_adc_remove(struct platform_device *pdev)
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{
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struct iio_dev *indio_dev = platform_get_drvdata(pdev);
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iio_map_array_unregister(indio_dev);
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return 0;
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}
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static const struct platform_device_id mrfld_adc_id_table[] = {
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{ .name = "mrfld_bcove_adc" },
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{}
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};
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MODULE_DEVICE_TABLE(platform, mrfld_adc_id_table);
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static struct platform_driver mrfld_adc_driver = {
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.driver = {
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.name = "mrfld_bcove_adc",
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},
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.probe = mrfld_adc_probe,
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.remove = mrfld_adc_remove,
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.id_table = mrfld_adc_id_table,
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};
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module_platform_driver(mrfld_adc_driver);
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MODULE_AUTHOR("Bin Yang <bin.yang@intel.com>");
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MODULE_AUTHOR("Vincent Pelletier <plr.vincent@gmail.com>");
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MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
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MODULE_DESCRIPTION("ADC driver for Basin Cove PMIC");
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MODULE_LICENSE("GPL v2");
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