Release 4.8 drivers/iio/health/afe4404.c

Directory: drivers/iio/health
/*
 * AFE4404 Heart Rate Monitors and Low-Cost Pulse Oximeters
 *
 * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
 *      Andrew F. Davis <afd@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/device.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/sysfs.h>
#include <linux/regulator/consumer.h>

#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/trigger_consumer.h>

#include "afe440x.h"


#define AFE4404_DRIVER_NAME		"afe4404"

/* AFE4404 registers */

#define AFE4404_TIA_GAIN_SEP		0x20

#define AFE4404_TIA_GAIN		0x21

#define AFE4404_PROG_TG_STC		0x34

#define AFE4404_PROG_TG_ENDC		0x35

#define AFE4404_LED3LEDSTC		0x36

#define AFE4404_LED3LEDENDC		0x37

#define AFE4404_CLKDIV_PRF		0x39

#define AFE4404_OFFDAC			0x3a

#define AFE4404_DEC			0x3d

#define AFE4404_AVG_LED2_ALED2VAL	0x3f

#define AFE4404_AVG_LED1_ALED1VAL	0x40

/* AFE4404 CONTROL2 register fields */

#define AFE440X_CONTROL2_OSC_ENABLE	BIT(9)


enum afe4404_fields {
	/* Gains */
	

F_TIA_GAIN_SEP, F_TIA_CF_SEP,
	

F_TIA_GAIN, TIA_CF,

	/* LED Current */
	


F_ILED1, F_ILED2, F_ILED3,

	/* Offset DAC */
	



F_OFFDAC_AMB2, F_OFFDAC_LED1, F_OFFDAC_AMB1, F_OFFDAC_LED2,

	/* sentinel */
	
F_MAX_FIELDS
};


static const struct reg_field afe4404_reg_fields[] = {
	/* Gains */
	[F_TIA_GAIN_SEP]	= REG_FIELD(AFE4404_TIA_GAIN_SEP, 0, 2),
	[F_TIA_CF_SEP]		= REG_FIELD(AFE4404_TIA_GAIN_SEP, 3, 5),
	[F_TIA_GAIN]		= REG_FIELD(AFE4404_TIA_GAIN, 0, 2),
	[TIA_CF]		= REG_FIELD(AFE4404_TIA_GAIN, 3, 5),
	/* LED Current */
	[F_ILED1]		= REG_FIELD(AFE440X_LEDCNTRL, 0, 5),
	[F_ILED2]		= REG_FIELD(AFE440X_LEDCNTRL, 6, 11),
	[F_ILED3]		= REG_FIELD(AFE440X_LEDCNTRL, 12, 17),
	/* Offset DAC */
	[F_OFFDAC_AMB2]		= REG_FIELD(AFE4404_OFFDAC, 0, 4),
	[F_OFFDAC_LED1]		= REG_FIELD(AFE4404_OFFDAC, 5, 9),
	[F_OFFDAC_AMB1]		= REG_FIELD(AFE4404_OFFDAC, 10, 14),
	[F_OFFDAC_LED2]		= REG_FIELD(AFE4404_OFFDAC, 15, 19),
};

/**
 * struct afe4404_data - AFE4404 device instance data
 * @dev: Device structure
 * @regmap: Register map of the device
 * @fields: Register fields of the device
 * @regulator: Pointer to the regulator for the IC
 * @trig: IIO trigger for this device
 * @irq: ADC_RDY line interrupt number
 */

struct afe4404_data {
	
struct device *dev;
	
struct regmap *regmap;
	
struct regmap_field *fields[F_MAX_FIELDS];
	
struct regulator *regulator;
	
struct iio_trigger *trig;
	
int irq;
};


enum afe4404_chan_id {
	
LED2 = 1,
	
ALED2,
	
LED1,
	
ALED1,
	
LED2_ALED2,
	
LED1_ALED1,
};


static const unsigned int afe4404_channel_values[] = {
	[LED2] = AFE440X_LED2VAL,
	[ALED2] = AFE440X_ALED2VAL,
	[LED1] = AFE440X_LED1VAL,
	[ALED1] = AFE440X_ALED1VAL,
	[LED2_ALED2] = AFE440X_LED2_ALED2VAL,
	[LED1_ALED1] = AFE440X_LED1_ALED1VAL,
};


static const unsigned int afe4404_channel_leds[] = {
	[LED2] = F_ILED2,
	[ALED2] = F_ILED3,
	[LED1] = F_ILED1,
};


static const unsigned int afe4404_channel_offdacs[] = {
	[LED2] = F_OFFDAC_LED2,
	[ALED2] = F_OFFDAC_AMB2,
	[LED1] = F_OFFDAC_LED1,
	[ALED1] = F_OFFDAC_AMB1,
};


static const struct iio_chan_spec afe4404_channels[] = {
	/* ADC values */
	AFE440X_INTENSITY_CHAN(LED2, BIT(IIO_CHAN_INFO_OFFSET)),
	AFE440X_INTENSITY_CHAN(ALED2, BIT(IIO_CHAN_INFO_OFFSET)),
	AFE440X_INTENSITY_CHAN(LED1, BIT(IIO_CHAN_INFO_OFFSET)),
	AFE440X_INTENSITY_CHAN(ALED1, BIT(IIO_CHAN_INFO_OFFSET)),
	AFE440X_INTENSITY_CHAN(LED2_ALED2, 0),
	AFE440X_INTENSITY_CHAN(LED1_ALED1, 0),
	/* LED current */
	AFE440X_CURRENT_CHAN(LED2),
	AFE440X_CURRENT_CHAN(ALED2),
	AFE440X_CURRENT_CHAN(LED1),
};


static const struct afe440x_val_table afe4404_res_table[] = {
	{ .integer = 500000, .fract = 0 },
	{ .integer = 250000, .fract = 0 },
	{ .integer = 100000, .fract = 0 },
	{ .integer = 50000, .fract = 0 },
	{ .integer = 25000, .fract = 0 },
	{ .integer = 10000, .fract = 0 },
	{ .integer = 1000000, .fract = 0 },
	{ .integer = 2000000, .fract = 0 },
};
AFE440X_TABLE_ATTR(in_intensity_resistance_available, afe4404_res_table);


static const struct afe440x_val_table afe4404_cap_table[] = {
	{ .integer = 0, .fract = 5000 },
	{ .integer = 0, .fract = 2500 },
	{ .integer = 0, .fract = 10000 },
	{ .integer = 0, .fract = 7500 },
	{ .integer = 0, .fract = 20000 },
	{ .integer = 0, .fract = 17500 },
	{ .integer = 0, .fract = 25000 },
	{ .integer = 0, .fract = 22500 },
};
AFE440X_TABLE_ATTR(in_intensity_capacitance_available, afe4404_cap_table);



static ssize_t afe440x_show_register(struct device *dev,
				     struct device_attribute *attr,
				     char *buf)
{
	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
	struct afe4404_data *afe = iio_priv(indio_dev);
	struct afe440x_attr *afe440x_attr = to_afe440x_attr(attr);
	unsigned int reg_val;
	int vals[2];
	int ret;

	ret = regmap_field_read(afe->fields[afe440x_attr->field], &reg_val);
	if (ret)
		return ret;

	if (reg_val >= afe440x_attr->table_size)
		return -EINVAL;

	vals[0] = afe440x_attr->val_table[reg_val].integer;
	vals[1] = afe440x_attr->val_table[reg_val].fract;

	return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, vals);
}

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static ssize_t afe440x_store_register(struct device *dev,
				      struct device_attribute *attr,
				      const char *buf, size_t count)
{
	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
	struct afe4404_data *afe = iio_priv(indio_dev);
	struct afe440x_attr *afe440x_attr = to_afe440x_attr(attr);
	int val, integer, fract, ret;

	ret = iio_str_to_fixpoint(buf, 100000, &integer, &fract);
	if (ret)
		return ret;

	for (val = 0; val < afe440x_attr->table_size; val++)
		if (afe440x_attr->val_table[val].integer == integer &&
		    afe440x_attr->val_table[val].fract == fract)
			break;
	if (val == afe440x_attr->table_size)
		return -EINVAL;

	ret = regmap_field_write(afe->fields[afe440x_attr->field], val);
	if (ret)
		return ret;

	return count;
}

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static AFE440X_ATTR(in_intensity1_resistance, F_TIA_GAIN_SEP, afe4404_res_table);
static AFE440X_ATTR(in_intensity1_capacitance, F_TIA_CF_SEP, afe4404_cap_table);

static AFE440X_ATTR(in_intensity2_resistance, F_TIA_GAIN_SEP, afe4404_res_table);
static AFE440X_ATTR(in_intensity2_capacitance, F_TIA_CF_SEP, afe4404_cap_table);

static AFE440X_ATTR(in_intensity3_resistance, F_TIA_GAIN, afe4404_res_table);
static AFE440X_ATTR(in_intensity3_capacitance, TIA_CF, afe4404_cap_table);

static AFE440X_ATTR(in_intensity4_resistance, F_TIA_GAIN, afe4404_res_table);
static AFE440X_ATTR(in_intensity4_capacitance, TIA_CF, afe4404_cap_table);


static struct attribute *afe440x_attributes[] = {
	&dev_attr_in_intensity_resistance_available.attr,
	&dev_attr_in_intensity_capacitance_available.attr,
	&afe440x_attr_in_intensity1_resistance.dev_attr.attr,
	&afe440x_attr_in_intensity1_capacitance.dev_attr.attr,
	&afe440x_attr_in_intensity2_resistance.dev_attr.attr,
	&afe440x_attr_in_intensity2_capacitance.dev_attr.attr,
	&afe440x_attr_in_intensity3_resistance.dev_attr.attr,
	&afe440x_attr_in_intensity3_capacitance.dev_attr.attr,
	&afe440x_attr_in_intensity4_resistance.dev_attr.attr,
	&afe440x_attr_in_intensity4_capacitance.dev_attr.attr,
	NULL
};


static const struct attribute_group afe440x_attribute_group = {
	.attrs = afe440x_attributes
};



static int afe4404_read_raw(struct iio_dev *indio_dev,
			    struct iio_chan_spec const *chan,
			    int *val, int *val2, long mask)
{
	struct afe4404_data *afe = iio_priv(indio_dev);
	unsigned int value_reg = afe4404_channel_values[chan->address];
	unsigned int led_field = afe4404_channel_leds[chan->address];
	unsigned int offdac_field = afe4404_channel_offdacs[chan->address];
	int ret;

	switch (chan->type) {
	case IIO_INTENSITY:
		switch (mask) {
		case IIO_CHAN_INFO_RAW:
			ret = regmap_read(afe->regmap, value_reg, val);
			if (ret)
				return ret;
			return IIO_VAL_INT;
		case IIO_CHAN_INFO_OFFSET:
			ret = regmap_field_read(afe->fields[offdac_field], val);
			if (ret)
				return ret;
			return IIO_VAL_INT;
		}
		break;
	case IIO_CURRENT:
		switch (mask) {
		case IIO_CHAN_INFO_RAW:
			ret = regmap_field_read(afe->fields[led_field], val);
			if (ret)
				return ret;
			return IIO_VAL_INT;
		case IIO_CHAN_INFO_SCALE:
			*val = 0;
			*val2 = 800000;
			return IIO_VAL_INT_PLUS_MICRO;
		}
		break;
	default:
		break;
	}

	return -EINVAL;
}

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static int afe4404_write_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan,
			     int val, int val2, long mask)
{
	struct afe4404_data *afe = iio_priv(indio_dev);
	unsigned int led_field = afe4404_channel_leds[chan->address];
	unsigned int offdac_field = afe4404_channel_offdacs[chan->address];

	switch (chan->type) {
	case IIO_INTENSITY:
		switch (mask) {
		case IIO_CHAN_INFO_OFFSET:
			return regmap_field_write(afe->fields[offdac_field], val);
		}
		break;
	case IIO_CURRENT:
		switch (mask) {
		case IIO_CHAN_INFO_RAW:
			return regmap_field_write(afe->fields[led_field], val);
		}
		break;
	default:
		break;
	}

	return -EINVAL;
}

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static const struct iio_info afe4404_iio_info = {
	.attrs = &afe440x_attribute_group,
	.read_raw = afe4404_read_raw,
	.write_raw = afe4404_write_raw,
	.driver_module = THIS_MODULE,
};



static irqreturn_t afe4404_trigger_handler(int irq, void *private)
{
	struct iio_poll_func *pf = private;
	struct iio_dev *indio_dev = pf->indio_dev;
	struct afe4404_data *afe = iio_priv(indio_dev);
	int ret, bit, i = 0;
	s32 buffer[10];

	for_each_set_bit(bit, indio_dev->active_scan_mask,
			 indio_dev->masklength) {
		ret = regmap_read(afe->regmap, afe4404_channel_values[bit],
				  &buffer[i++]);
		if (ret)
			goto err;
	}

	iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp);
err:
	iio_trigger_notify_done(indio_dev->trig);

	return IRQ_HANDLED;
}

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static const struct iio_trigger_ops afe4404_trigger_ops = {
	.owner = THIS_MODULE,
};

/* Default timings from data-sheet */

#define AFE4404_TIMING_PAIRS			\
	{ AFE440X_PRPCOUNT,     39999   },      \
        { AFE440X_LED2LEDSTC,   0       },      \
        { AFE440X_LED2LEDENDC,  398     },      \
        { AFE440X_LED2STC,      80      },      \
        { AFE440X_LED2ENDC,     398     },      \
        { AFE440X_ADCRSTSTCT0,  5600    },      \
        { AFE440X_ADCRSTENDCT0, 5606    },      \
        { AFE440X_LED2CONVST,   5607    },      \
        { AFE440X_LED2CONVEND,  6066    },      \
        { AFE4404_LED3LEDSTC,   400     },      \
        { AFE4404_LED3LEDENDC,  798     },      \
        { AFE440X_ALED2STC,     480     },      \
        { AFE440X_ALED2ENDC,    798     },      \
        { AFE440X_ADCRSTSTCT1,  6068    },      \
        { AFE440X_ADCRSTENDCT1, 6074    },      \
        { AFE440X_ALED2CONVST,  6075    },      \
        { AFE440X_ALED2CONVEND, 6534    },      \
        { AFE440X_LED1LEDSTC,   800     },      \
        { AFE440X_LED1LEDENDC,  1198    },      \
        { AFE440X_LED1STC,      880     },      \
        { AFE440X_LED1ENDC,     1198    },      \
        { AFE440X_ADCRSTSTCT2,  6536    },      \
        { AFE440X_ADCRSTENDCT2, 6542    },      \
        { AFE440X_LED1CONVST,   6543    },      \
        { AFE440X_LED1CONVEND,  7003    },      \
        { AFE440X_ALED1STC,     1280    },      \
        { AFE440X_ALED1ENDC,    1598    },      \
        { AFE440X_ADCRSTSTCT3,  7005    },      \
        { AFE440X_ADCRSTENDCT3, 7011    },      \
        { AFE440X_ALED1CONVST,  7012    },      \
        { AFE440X_ALED1CONVEND, 7471    },      \
        { AFE440X_PDNCYCLESTC,  7671    },      \
        { AFE440X_PDNCYCLEENDC, 39199   }


static const struct reg_sequence afe4404_reg_sequences[] = {
	AFE4404_TIMING_PAIRS,
	{ AFE440X_CONTROL1, AFE440X_CONTROL1_TIMEREN },
	{ AFE4404_TIA_GAIN_SEP, AFE440X_TIAGAIN_ENSEPGAIN },
	{ AFE440X_CONTROL2, AFE440X_CONTROL2_OSC_ENABLE	},
};


static const struct regmap_range afe4404_yes_ranges[] = {
	regmap_reg_range(AFE440X_LED2VAL, AFE440X_LED1_ALED1VAL),
	regmap_reg_range(AFE4404_AVG_LED2_ALED2VAL, AFE4404_AVG_LED1_ALED1VAL),
};


static const struct regmap_access_table afe4404_volatile_table = {
	.yes_ranges = afe4404_yes_ranges,
	.n_yes_ranges = ARRAY_SIZE(afe4404_yes_ranges),
};


static const struct regmap_config afe4404_regmap_config = {
	.reg_bits = 8,
	.val_bits = 24,

	.max_register = AFE4404_AVG_LED1_ALED1VAL,
	.cache_type = REGCACHE_RBTREE,
	.volatile_table = &afe4404_volatile_table,
};


static const struct of_device_id afe4404_of_match[] = {
	{ .compatible = "ti,afe4404", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, afe4404_of_match);



static int __maybe_unused afe4404_suspend(struct device *dev)
{
	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
	struct afe4404_data *afe = iio_priv(indio_dev);
	int ret;

	ret = regmap_update_bits(afe->regmap, AFE440X_CONTROL2,
				 AFE440X_CONTROL2_PDN_AFE,
				 AFE440X_CONTROL2_PDN_AFE);
	if (ret)
		return ret;

	ret = regulator_disable(afe->regulator);
	if (ret) {
		dev_err(dev, "Unable to disable regulator\n");
		return ret;
	}

	return 0;
}

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Total 85 100.00% 2 100.00%



static int __maybe_unused afe4404_resume(struct device *dev)
{
	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
	struct afe4404_data *afe = iio_priv(indio_dev);
	int ret;

	ret = regulator_enable(afe->regulator);
	if (ret) {
		dev_err(dev, "Unable to enable regulator\n");
		return ret;
	}

	ret = regmap_update_bits(afe->regmap, AFE440X_CONTROL2,
				 AFE440X_CONTROL2_PDN_AFE, 0);
	if (ret)
		return ret;

	return 0;
}

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Total 85 100.00% 2 100.00%

static SIMPLE_DEV_PM_OPS(afe4404_pm_ops, afe4404_suspend, afe4404_resume);



static int afe4404_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	struct iio_dev *indio_dev;
	struct afe4404_data *afe;
	int i, ret;

	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*afe));
	if (!indio_dev)
		return -ENOMEM;

	afe = iio_priv(indio_dev);
	i2c_set_clientdata(client, indio_dev);

	afe->dev = &client->dev;
	afe->irq = client->irq;

	afe->regmap = devm_regmap_init_i2c(client, &afe4404_regmap_config);
	if (IS_ERR(afe->regmap)) {
		dev_err(afe->dev, "Unable to allocate register map\n");
		return PTR_ERR(afe->regmap);
	}

	for (i = 0; i < F_MAX_FIELDS; i++) {
		afe->fields[i] = devm_regmap_field_alloc(afe->dev, afe->regmap,
							 afe4404_reg_fields[i]);
		if (IS_ERR(afe->fields[i])) {
			dev_err(afe->dev, "Unable to allocate regmap fields\n");
			return PTR_ERR(afe->fields[i]);
		}
	}

	afe->regulator = devm_regulator_get(afe->dev, "tx_sup");
	if (IS_ERR(afe->regulator)) {
		dev_err(afe->dev, "Unable to get regulator\n");
		return PTR_ERR(afe->regulator);
	}
	ret = regulator_enable(afe->regulator);
	if (ret) {
		dev_err(afe->dev, "Unable to enable regulator\n");
		return ret;
	}

	ret = regmap_write(afe->regmap, AFE440X_CONTROL0,
			   AFE440X_CONTROL0_SW_RESET);
	if (ret) {
		dev_err(afe->dev, "Unable to reset device\n");
		goto disable_reg;
	}

	ret = regmap_multi_reg_write(afe->regmap, afe4404_reg_sequences,
				     ARRAY_SIZE(afe4404_reg_sequences));
	if (ret) {
		dev_err(afe->dev, "Unable to set register defaults\n");
		goto disable_reg;
	}

	indio_dev->modes = INDIO_DIRECT_MODE;
	indio_dev->dev.parent = afe->dev;
	indio_dev->channels = afe4404_channels;
	indio_dev->num_channels = ARRAY_SIZE(afe4404_channels);
	indio_dev->name = AFE4404_DRIVER_NAME;
	indio_dev->info = &afe4404_iio_info;

	if (afe->irq > 0) {
		afe->trig = devm_iio_trigger_alloc(afe->dev,
						   "%s-dev%d",
						   indio_dev->name,
						   indio_dev->id);
		if (!afe->trig) {
			dev_err(afe->dev, "Unable to allocate IIO trigger\n");
			ret = -ENOMEM;
			goto disable_reg;
		}

		iio_trigger_set_drvdata(afe->trig, indio_dev);

		afe->trig->ops = &afe4404_trigger_ops;
		afe->trig->dev.parent = afe->dev;

		ret = iio_trigger_register(afe->trig);
		if (ret) {
			dev_err(afe->dev, "Unable to register IIO trigger\n");
			goto disable_reg;
		}

		ret = devm_request_threaded_irq(afe->dev, afe->irq,
						iio_trigger_generic_data_rdy_poll,
						NULL, IRQF_ONESHOT,
						AFE4404_DRIVER_NAME,
						afe->trig);
		if (ret) {
			dev_err(afe->dev, "Unable to request IRQ\n");
			goto disable_reg;
		}
	}

	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
					 afe4404_trigger_handler, NULL);
	if (ret) {
		dev_err(afe->dev, "Unable to setup buffer\n");
		goto unregister_trigger;
	}

	ret = iio_device_register(indio_dev);
	if (ret) {
		dev_err(afe->dev, "Unable to register IIO device\n");
		goto unregister_triggered_buffer;
	}

	return 0;

unregister_triggered_buffer:
	iio_triggered_buffer_cleanup(indio_dev);
unregister_trigger:
	if (afe->irq > 0)
		iio_trigger_unregister(afe->trig);
disable_reg:
	regulator_disable(afe->regulator);

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
andrew f. davis andrew f. davis 630 100.00% 2 100.00%
Total 630 100.00% 2 100.00%



static int afe4404_remove(struct i2c_client *client)
{
	struct iio_dev *indio_dev = i2c_get_clientdata(client);
	struct afe4404_data *afe = iio_priv(indio_dev);
	int ret;

	iio_device_unregister(indio_dev);

	iio_triggered_buffer_cleanup(indio_dev);

	if (afe->irq > 0)
		iio_trigger_unregister(afe->trig);

	ret = regulator_disable(afe->regulator);
	if (ret) {
		dev_err(afe->dev, "Unable to disable regulator\n");
		return ret;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
andrew f. davis andrew f. davis 89 100.00% 1 100.00%
Total 89 100.00% 1 100.00%


static const struct i2c_device_id afe4404_ids[] = {
	{ "afe4404", 0 },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, afe4404_ids);


static struct i2c_driver afe4404_i2c_driver = {
	.driver = {
		.name = AFE4404_DRIVER_NAME,
		.of_match_table = afe4404_of_match,
		.pm = &afe4404_pm_ops,
        },
	.probe = afe4404_probe,
	.remove = afe4404_remove,
	.id_table = afe4404_ids,
};

module_i2c_driver(afe4404_i2c_driver);

MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TI AFE4404 Heart Rate Monitor and Pulse Oximeter AFE");
MODULE_LICENSE("GPL v2");
Overall Contributors
Person Tokens Prop Commits CommitProp
andrew f. davis andrew f. davis 2837 99.93% 8 88.89%
arnd bergmann arnd bergmann 2 0.07% 1 11.11%
Total 2839 100.00% 9 100.00%
  Directory: drivers/iio/health

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
andrew f. davis	andrew f. davis	139	100.00%	3	100.00%
	Total	139	100.00%	3	100.00%
cregit-Linux how code gets into the kernel

Release 4.8 drivers/iio/health/afe4404.c

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