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Diffstat (limited to 'drivers/iio/adc')
-rw-r--r--drivers/iio/adc/Kconfig3
-rw-r--r--drivers/iio/adc/ad7476.c26
-rw-r--r--drivers/iio/adc/axp20x_adc.c168
-rw-r--r--drivers/iio/adc/ep93xx_adc.c4
-rw-r--r--drivers/iio/adc/ti-adc161s626.c16
5 files changed, 185 insertions, 32 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 72bc2b71765a..914b6f849a29 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -144,10 +144,9 @@ config ASPEED_ADC
config AT91_ADC
tristate "Atmel AT91 ADC"
depends on ARCH_AT91
- depends on INPUT
+ depends on INPUT && SYSFS
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
- select SYSFS
help
Say yes here to build support for Atmel AT91 ADC.
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index b7706bf10ffe..fbaae47746a8 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -1,9 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
- * AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
+ * Analog Devices AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
+ * TI ADC081S/ADC101S/ADC121S 8/10/12-bit SPI ADC driver
*
* Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
*/
#include <linux/device.h>
@@ -56,6 +56,9 @@ enum ad7476_supported_device_ids {
ID_AD7468,
ID_AD7495,
ID_AD7940,
+ ID_ADC081S,
+ ID_ADC101S,
+ ID_ADC121S,
};
static irqreturn_t ad7476_trigger_handler(int irq, void *p)
@@ -147,6 +150,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
}, \
}
+#define ADC081S_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
+ BIT(IIO_CHAN_INFO_RAW))
#define AD7476_CHAN(bits) _AD7476_CHAN((bits), 13 - (bits), \
BIT(IIO_CHAN_INFO_RAW))
#define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
@@ -192,6 +197,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
.channel[0] = AD7940_CHAN(14),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
+ [ID_ADC081S] = {
+ .channel[0] = ADC081S_CHAN(8),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
+ [ID_ADC101S] = {
+ .channel[0] = ADC081S_CHAN(10),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
+ [ID_ADC121S] = {
+ .channel[0] = ADC081S_CHAN(12),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
};
static const struct iio_info ad7476_info = {
@@ -294,6 +311,9 @@ static const struct spi_device_id ad7476_id[] = {
{"ad7910", ID_AD7467},
{"ad7920", ID_AD7466},
{"ad7940", ID_AD7940},
+ {"adc081s", ID_ADC081S},
+ {"adc101s", ID_ADC101S},
+ {"adc121s", ID_ADC121S},
{}
};
MODULE_DEVICE_TABLE(spi, ad7476_id);
diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index a30a97245e91..5be789269353 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -35,8 +35,13 @@
#define AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(x) (((x) & BIT(0)) << 1)
#define AXP20X_ADC_RATE_MASK GENMASK(7, 6)
+#define AXP813_V_I_ADC_RATE_MASK GENMASK(5, 4)
+#define AXP813_ADC_RATE_MASK (AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK)
#define AXP20X_ADC_RATE_HZ(x) ((ilog2((x) / 25) << 6) & AXP20X_ADC_RATE_MASK)
#define AXP22X_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK)
+#define AXP813_TS_GPIO0_ADC_RATE_HZ(x) AXP20X_ADC_RATE_HZ(x)
+#define AXP813_V_I_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 4) & AXP813_V_I_ADC_RATE_MASK)
+#define AXP813_ADC_RATE_HZ(x) (AXP20X_ADC_RATE_HZ(x) | AXP813_V_I_ADC_RATE_HZ(x))
#define AXP20X_ADC_CHANNEL(_channel, _name, _type, _reg) \
{ \
@@ -95,6 +100,12 @@ enum axp22x_adc_channel_i {
AXP22X_BATT_DISCHRG_I,
};
+enum axp813_adc_channel_v {
+ AXP813_TS_IN = 0,
+ AXP813_GPIO0_V,
+ AXP813_BATT_V,
+};
+
static struct iio_map axp20x_maps[] = {
{
.consumer_dev_name = "axp20x-usb-power-supply",
@@ -197,6 +208,25 @@ static const struct iio_chan_spec axp22x_adc_channels[] = {
AXP20X_BATT_DISCHRG_I_H),
};
+static const struct iio_chan_spec axp813_adc_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .address = AXP22X_PMIC_TEMP_H,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .datasheet_name = "pmic_temp",
+ },
+ AXP20X_ADC_CHANNEL(AXP813_GPIO0_V, "gpio0_v", IIO_VOLTAGE,
+ AXP288_GP_ADC_H),
+ AXP20X_ADC_CHANNEL(AXP813_BATT_V, "batt_v", IIO_VOLTAGE,
+ AXP20X_BATT_V_H),
+ AXP20X_ADC_CHANNEL(AXP22X_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT,
+ AXP20X_BATT_CHRG_I_H),
+ AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
+ AXP20X_BATT_DISCHRG_I_H),
+};
+
static int axp20x_adc_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val)
{
@@ -243,6 +273,18 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
}
+static int axp813_adc_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val)
+{
+ struct axp20x_adc_iio *info = iio_priv(indio_dev);
+
+ *val = axp20x_read_variable_width(info->regmap, chan->address, 12);
+ if (*val < 0)
+ return *val;
+
+ return IIO_VAL_INT;
+}
+
static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
{
switch (channel) {
@@ -273,6 +315,24 @@ static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
}
}
+static int axp813_adc_scale_voltage(int channel, int *val, int *val2)
+{
+ switch (channel) {
+ case AXP813_GPIO0_V:
+ *val = 0;
+ *val2 = 800000;
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ case AXP813_BATT_V:
+ *val = 1;
+ *val2 = 100000;
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_adc_scale_current(int channel, int *val, int *val2)
{
switch (channel) {
@@ -342,6 +402,26 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val,
}
}
+static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val,
+ int *val2)
+{
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ return axp813_adc_scale_voltage(chan->channel, val, val2);
+
+ case IIO_CURRENT:
+ *val = 1;
+ return IIO_VAL_INT;
+
+ case IIO_TEMP:
+ *val = 100;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
int *val)
{
@@ -365,7 +445,7 @@ static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
return -EINVAL;
}
- *val = !!(*val) * 700000;
+ *val = *val ? 700000 : 0;
return IIO_VAL_INT;
}
@@ -425,6 +505,26 @@ static int axp22x_read_raw(struct iio_dev *indio_dev,
}
}
+static int axp813_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val,
+ int *val2, long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_OFFSET:
+ *val = -2667;
+ return IIO_VAL_INT;
+
+ case IIO_CHAN_INFO_SCALE:
+ return axp813_adc_scale(chan, val, val2);
+
+ case IIO_CHAN_INFO_RAW:
+ return axp813_adc_raw(indio_dev, chan, val);
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int val, int val2,
long mask)
@@ -442,15 +542,17 @@ static int axp20x_write_raw(struct iio_dev *indio_dev,
if (val != 0 && val != 700000)
return -EINVAL;
+ val = val ? 1 : 0;
+
switch (chan->channel) {
case AXP20X_GPIO0_V:
reg = AXP20X_GPIO10_IN_RANGE_GPIO0;
- regval = AXP20X_GPIO10_IN_RANGE_GPIO0_VAL(!!val);
+ regval = AXP20X_GPIO10_IN_RANGE_GPIO0_VAL(val);
break;
case AXP20X_GPIO1_V:
reg = AXP20X_GPIO10_IN_RANGE_GPIO1;
- regval = AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(!!val);
+ regval = AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(val);
break;
default:
@@ -470,14 +572,29 @@ static const struct iio_info axp22x_adc_iio_info = {
.read_raw = axp22x_read_raw,
};
-static int axp20x_adc_rate(int rate)
+static const struct iio_info axp813_adc_iio_info = {
+ .read_raw = axp813_read_raw,
+};
+
+static int axp20x_adc_rate(struct axp20x_adc_iio *info, int rate)
+{
+ return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,
+ AXP20X_ADC_RATE_MASK,
+ AXP20X_ADC_RATE_HZ(rate));
+}
+
+static int axp22x_adc_rate(struct axp20x_adc_iio *info, int rate)
{
- return AXP20X_ADC_RATE_HZ(rate);
+ return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,
+ AXP20X_ADC_RATE_MASK,
+ AXP22X_ADC_RATE_HZ(rate));
}
-static int axp22x_adc_rate(int rate)
+static int axp813_adc_rate(struct axp20x_adc_iio *info, int rate)
{
- return AXP22X_ADC_RATE_HZ(rate);
+ return regmap_update_bits(info->regmap, AXP813_ADC_RATE,
+ AXP813_ADC_RATE_MASK,
+ AXP813_ADC_RATE_HZ(rate));
}
struct axp_data {
@@ -485,7 +602,8 @@ struct axp_data {
int num_channels;
struct iio_chan_spec const *channels;
unsigned long adc_en1_mask;
- int (*adc_rate)(int rate);
+ int (*adc_rate)(struct axp20x_adc_iio *info,
+ int rate);
bool adc_en2;
struct iio_map *maps;
};
@@ -510,9 +628,28 @@ static const struct axp_data axp22x_data = {
.maps = axp22x_maps,
};
+static const struct axp_data axp813_data = {
+ .iio_info = &axp813_adc_iio_info,
+ .num_channels = ARRAY_SIZE(axp813_adc_channels),
+ .channels = axp813_adc_channels,
+ .adc_en1_mask = AXP22X_ADC_EN1_MASK,
+ .adc_rate = axp813_adc_rate,
+ .adc_en2 = false,
+ .maps = axp22x_maps,
+};
+
+static const struct of_device_id axp20x_adc_of_match[] = {
+ { .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
+ { .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
+ { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, axp20x_adc_of_match);
+
static const struct platform_device_id axp20x_adc_id_match[] = {
{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
+ { .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(platform, axp20x_adc_id_match);
@@ -538,7 +675,16 @@ static int axp20x_probe(struct platform_device *pdev)
indio_dev->dev.of_node = pdev->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
- info->data = (struct axp_data *)platform_get_device_id(pdev)->driver_data;
+ if (!pdev->dev.of_node) {
+ const struct platform_device_id *id;
+
+ id = platform_get_device_id(pdev);
+ info->data = (struct axp_data *)id->driver_data;
+ } else {
+ struct device *dev = &pdev->dev;
+
+ info->data = (struct axp_data *)of_device_get_match_data(dev);
+ }
indio_dev->name = platform_get_device_id(pdev)->name;
indio_dev->info = info->data->iio_info;
@@ -554,8 +700,7 @@ static int axp20x_probe(struct platform_device *pdev)
AXP20X_ADC_EN2_MASK, AXP20X_ADC_EN2_MASK);
/* Configure ADCs rate */
- regmap_update_bits(info->regmap, AXP20X_ADC_RATE, AXP20X_ADC_RATE_MASK,
- info->data->adc_rate(100));
+ info->data->adc_rate(info, 100);
ret = iio_map_array_register(indio_dev, info->data->maps);
if (ret < 0) {
@@ -602,6 +747,7 @@ static int axp20x_remove(struct platform_device *pdev)
static struct platform_driver axp20x_adc_driver = {
.driver = {
.name = "axp20x-adc",
+ .of_match_table = of_match_ptr(axp20x_adc_of_match),
},
.id_table = axp20x_adc_id_match,
.probe = axp20x_probe,
diff --git a/drivers/iio/adc/ep93xx_adc.c b/drivers/iio/adc/ep93xx_adc.c
index 81c901507ad2..5036c392cb20 100644
--- a/drivers/iio/adc/ep93xx_adc.c
+++ b/drivers/iio/adc/ep93xx_adc.c
@@ -167,10 +167,6 @@ static int ep93xx_adc_probe(struct platform_device *pdev)
priv = iio_priv(iiodev);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Cannot obtain memory resource\n");
- return -ENXIO;
- }
priv->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(priv->base)) {
dev_err(&pdev->dev, "Cannot map memory resource\n");
diff --git a/drivers/iio/adc/ti-adc161s626.c b/drivers/iio/adc/ti-adc161s626.c
index 10fa7677ac4b..3bbc9b9ddbfe 100644
--- a/drivers/iio/adc/ti-adc161s626.c
+++ b/drivers/iio/adc/ti-adc161s626.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* ti-adc161s626.c - Texas Instruments ADC161S626 1-channel differential ADC
*
@@ -5,17 +6,8 @@
* adc141s626 - 14-bit ADC
* adc161s626 - 16-bit ADC
*
- * Copyright (C) 2016 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
+ * Copyright (C) 2016-2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
@@ -275,6 +267,6 @@ static struct spi_driver ti_adc_driver = {
};
module_spi_driver(ti_adc_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("Texas Instruments ADC1x1S 1-channel differential ADC");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-24 20:38:32 +0300