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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-25 10:50:51 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-25 10:50:51 +0200
commitbf402c08ebc286f613501f4d2dc00304aed47ceb (patch)
tree2f08c3c627f8e658d8893ceaa5365f1ecdb13fb4 /drivers/iio
parent817de6b85914a3dda72b971c074d4d342965fba0 (diff)
parent447ccb4e0834a9f9f0dd5643e421c7f1a1649e6a (diff)
downloadlinux-bf402c08ebc286f613501f4d2dc00304aed47ceb.tar.gz
Merge tag 'iio-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes: Second set of IIO new device support, features and cleanup for the 5.2 cycle. New device suport * ad7606 - Support the AD7616 16 channel, 12bit ADC. * fxas21002c - New driver for this gyroscope with I2C and SPI support. * lsm6dsx - Support the lsm6dsr, new device information structure and dt bindings. * srf04 - Addition device IDs for mb1000, mb1010, mb1020, mb1030 and mb1040 + support of different required trigger pulse lengths. * st-accel - Support the ls2de12, new device info and dt bindings. * ti-ads8344 - New driver for this 8 channel, 16 bit SPI ADC. Binding conversions to yaml - we have started doing these in general for IIO. * avia-hx711 * bmp085 Cleanups and minor fixes / additions * ad5758 - Fixup for some changes between preproduction parts and final part. * ad7606 - Refactor handling of oversampling to make it easy to vary between supported devices. * ad9832 - Organise includes. - Clock framework to handle clocks. * ad9834 - Drop unnecessary parenthesis. * bmc150 - Use __func__ rather than hardcoding. * dummy_evgen. - Fix a memleak on error in probe. * kxcjk1013 - Add KXCJ91008 ACPI ID as seen in the wild. - Use __func__ rather than hardcoding. * imx7d - Local dev variable to simplify code a bit. - dev_err replaces pr_err to give more info. - devm_platform_ioremap_resource for small reduction in boilerplate. - Simplify probe and remove by sharing suspend / resume logic. - Devm for iio_device_register as remove only contains the unregister. * lsm6dsx - Remove a variable that was never read. - Open code values where they are effectively described by what is assigned to them rather than using uninformative defines. * max31856 - Avoid an unintialized ret variable in a path that can't actually occur but is hard for a static checker to know. * max9611 - White space * mpu3050 - Reduce a sleep worst case by switching from msleep to usleep_range. * qcom-spmi-adc5 - Add MODULE_DEVICE_TABLE to assist autoloading of this as a module. * stm32-dfsdm - Fix missing dependencies. * stm32-timer trigger - Fix a build issue when disabled. * ti-ads7950 - Fix mising dependency on CONFIG_GPIOLIB. * tag 'iio-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (42 commits) iio: adc: qcom-spmi-adc5: Fix of-based module autoloading iio: dummy_evgen: fix possible memleak in evgen init iio:accel:Switch hardcoded function name with a reference to __func__ making the code more maintainable iio: adc: stm32-dfsdm: fix triggered buffer build dependency iio: adc: stm32-dfsdm: fix unmet direct dependencies detected iio: trigger: stm32-timer: fix build issue when disabled iio: imx7d_adc: Use devm_iio_device_register() iio: imx7d_adc: Simplify imx7d_adc_remove() with imx7d_adc_suspend() iio: imx7d_adc: Simplify imx7d_adc_probe() with imx7d_adc_resume() drivers/iio/gyro/mpu3050-core.c: This patch fix the following checkpatch warning. iio: dac: ad5758: Modifications for new revision iio: imu: st_lsm6dsx: inline per-sensor data iio: adc: Add driver for the TI ADS8344 A/DC chips dt-bindings: iio: adc: Add bindings for TI ADS8344 A/DC chips MAINTAINERS: add entry for fxas21002c gyro driver iio: gyro: fxas21002c: add spi driver iio: gyro: fxas21002c: add i2c driver iio: gyro: add core driver for fxas21002c iio: gyro: add DT bindings to fxas21002c Kconfig: change configuration of srf04 ultrasonic iio sensor ...
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/accel/Kconfig2
-rw-r--r--drivers/iio/accel/bmc150-accel-core.c2
-rw-r--r--drivers/iio/accel/kxcjk-1013.c3
-rw-r--r--drivers/iio/accel/st_accel.h2
-rw-r--r--drivers/iio/accel/st_accel_core.c76
-rw-r--r--drivers/iio/accel/st_accel_i2c.c5
-rw-r--r--drivers/iio/adc/Kconfig16
-rw-r--r--drivers/iio/adc/Makefile1
-rw-r--r--drivers/iio/adc/ad7606.c120
-rw-r--r--drivers/iio/adc/ad7606.h25
-rw-r--r--drivers/iio/adc/ad7606_spi.c2
-rw-r--r--drivers/iio/adc/imx7d_adc.c175
-rw-r--r--drivers/iio/adc/qcom-spmi-adc5.c1
-rw-r--r--drivers/iio/adc/ti-ads8344.c204
-rw-r--r--drivers/iio/dac/ad5758.c55
-rw-r--r--drivers/iio/dummy/iio_dummy_evgen.c5
-rw-r--r--drivers/iio/gyro/Kconfig22
-rw-r--r--drivers/iio/gyro/Makefile3
-rw-r--r--drivers/iio/gyro/fxas21002c.h150
-rw-r--r--drivers/iio/gyro/fxas21002c_core.c1004
-rw-r--r--drivers/iio/gyro/fxas21002c_i2c.c69
-rw-r--r--drivers/iio/gyro/fxas21002c_spi.c70
-rw-r--r--drivers/iio/gyro/mpu3050-core.c2
-rw-r--r--drivers/iio/imu/st_lsm6dsx/Kconfig2
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h2
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c12
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c117
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c5
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c5
-rw-r--r--drivers/iio/proximity/Kconfig11
-rw-r--r--drivers/iio/proximity/srf04.c38
-rw-r--r--drivers/iio/temperature/max31856.c3
32 files changed, 1983 insertions, 226 deletions
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 4a1f133538ba..62a970a20219 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -223,7 +223,7 @@ config IIO_ST_ACCEL_3AXIS
Say yes here to build support for STMicroelectronics accelerometers:
LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12, H3LIS331DL,
- LNG2DM, LIS3DE
+ LNG2DM, LIS3DE, LIS2DE12
This driver can also be built as a module. If so, these modules
will be created:
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index b4e2d9b04e1d..44d7c49fe2a1 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -394,7 +394,7 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
if (ret < 0) {
dev_err(dev,
- "Failed: bmc150_accel_set_power_state for %d\n", on);
+ "Failed: %s for %d\n", __func__, on);
if (on)
pm_runtime_put_noidle(dev);
diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
index a5c9d3d8613f..2922a2e88a1b 100644
--- a/drivers/iio/accel/kxcjk-1013.c
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -451,7 +451,7 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
}
if (ret < 0) {
dev_err(&data->client->dev,
- "Failed: kxcjk1013_set_power_state for %d\n", on);
+ "Failed: %s for %d\n", __func__, on);
if (on)
pm_runtime_put_noidle(&data->client->dev);
return ret;
@@ -1491,6 +1491,7 @@ static const struct acpi_device_id kx_acpi_match[] = {
{"KXCJ1013", KXCJK1013},
{"KXCJ1008", KXCJ91008},
{"KXCJ9000", KXCJ91008},
+ {"KIOX0008", KXCJ91008},
{"KIOX0009", KXTJ21009},
{"KIOX000A", KXCJ91008},
{"KIOX010A", KXCJ91008}, /* KXCJ91008 inside the display of a 2-in-1 */
diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index fd53258656ca..9d25955af58e 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -34,6 +34,7 @@ enum st_accel_type {
LIS3LV02DL,
LIS2DW12,
LIS3DHH,
+ LIS2DE12,
ST_ACCEL_MAX,
};
@@ -57,6 +58,7 @@ enum st_accel_type {
#define LIS2DW12_ACCEL_DEV_NAME "lis2dw12"
#define LIS3DHH_ACCEL_DEV_NAME "lis3dhh"
#define LIS3DE_ACCEL_DEV_NAME "lis3de"
+#define LIS2DE12_ACCEL_DEV_NAME "lis2de12"
/**
* struct st_sensors_platform_data - default accel platform data
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index 9930edf423bf..5ff04d9755d5 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -831,6 +831,82 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
.multi_read_bit = false,
.bootime = 2,
},
+ {
+ .wai = 0x33,
+ .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+ .sensors_supported = {
+ [0] = LIS2DE12_ACCEL_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
+ .odr = {
+ .addr = 0x20,
+ .mask = 0xf0,
+ .odr_avl = {
+ { .hz = 1, .value = 0x01, },
+ { .hz = 10, .value = 0x02, },
+ { .hz = 25, .value = 0x03, },
+ { .hz = 50, .value = 0x04, },
+ { .hz = 100, .value = 0x05, },
+ { .hz = 200, .value = 0x06, },
+ { .hz = 400, .value = 0x07, },
+ { .hz = 1620, .value = 0x08, },
+ { .hz = 5376, .value = 0x09, },
+ },
+ },
+ .pw = {
+ .addr = 0x20,
+ .mask = 0xf0,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .enable_axis = {
+ .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+ .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+ },
+ .fs = {
+ .addr = 0x23,
+ .mask = 0x30,
+ .fs_avl = {
+ [0] = {
+ .num = ST_ACCEL_FS_AVL_2G,
+ .value = 0x00,
+ .gain = IIO_G_TO_M_S_2(15600),
+ },
+ [1] = {
+ .num = ST_ACCEL_FS_AVL_4G,
+ .value = 0x01,
+ .gain = IIO_G_TO_M_S_2(31200),
+ },
+ [2] = {
+ .num = ST_ACCEL_FS_AVL_8G,
+ .value = 0x02,
+ .gain = IIO_G_TO_M_S_2(62500),
+ },
+ [3] = {
+ .num = ST_ACCEL_FS_AVL_16G,
+ .value = 0x03,
+ .gain = IIO_G_TO_M_S_2(187500),
+ },
+ },
+ },
+ .drdy_irq = {
+ .int1 = {
+ .addr = 0x22,
+ .mask = 0x10,
+ },
+ .addr_ihl = 0x25,
+ .mask_ihl = 0x02,
+ .stat_drdy = {
+ .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .mask = 0x07,
+ },
+ },
+ .sim = {
+ .addr = 0x23,
+ .value = BIT(0),
+ },
+ .multi_read_bit = true,
+ .bootime = 2,
+ },
};
static int st_accel_read_raw(struct iio_dev *indio_dev,
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index de8ae4327094..4e54477ccf24 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -102,6 +102,10 @@ static const struct of_device_id st_accel_of_match[] = {
.compatible = "st,lis3de",
.data = LIS3DE_ACCEL_DEV_NAME,
},
+ {
+ .compatible = "st,lis2de12",
+ .data = LIS2DE12_ACCEL_DEV_NAME,
+ },
{},
};
MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -140,6 +144,7 @@ static const struct i2c_device_id st_accel_id_table[] = {
{ LIS3LV02DL_ACCEL_DEV_NAME },
{ LIS2DW12_ACCEL_DEV_NAME },
{ LIS3DE_ACCEL_DEV_NAME },
+ { LIS2DE12_ACCEL_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 846c7ace4b96..2036eca546fd 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -553,7 +553,7 @@ config MAX1363
To compile this driver as a module, choose M here: the module will be
called max1363.
-config MAX9611
+config MAX9611
tristate "Maxim max9611/max9612 ADC driver"
depends on I2C
help
@@ -821,7 +821,9 @@ config STM32_DFSDM_ADC
depends on (ARCH_STM32 && OF) || COMPILE_TEST
select STM32_DFSDM_CORE
select REGMAP_MMIO
+ select IIO_BUFFER
select IIO_BUFFER_HW_CONSUMER
+ select IIO_TRIGGERED_BUFFER
help
Select this option to support ADCSigma delta modulator for
STMicroelectronics STM32 digital filter for sigma delta converter.
@@ -968,7 +970,7 @@ config TI_ADS1015
config TI_ADS7950
tristate "Texas Instruments ADS7950 ADC driver"
- depends on SPI
+ depends on SPI && GPIOLIB
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
@@ -979,6 +981,16 @@ config TI_ADS7950
To compile this driver as a module, choose M here: the
module will be called ti-ads7950.
+config TI_ADS8344
+ tristate "Texas Instruments ADS8344"
+ depends on SPI && OF
+ help
+ If you say yes here you get support for Texas Instruments ADS8344
+ ADC chips
+
+ This driver can also be built as a module. If so, the module will be
+ called ti-ads8344.
+
config TI_ADS8688
tristate "Texas Instruments ADS8688"
depends on SPI && OF
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index 085a7512f8df..ef9cc485fb67 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -88,6 +88,7 @@ obj-$(CONFIG_TI_ADC128S052) += ti-adc128s052.o
obj-$(CONFIG_TI_ADC161S626) += ti-adc161s626.o
obj-$(CONFIG_TI_ADS1015) += ti-ads1015.o
obj-$(CONFIG_TI_ADS7950) += ti-ads7950.o
+obj-$(CONFIG_TI_ADS8344) += ti-ads8344.o
obj-$(CONFIG_TI_ADS8688) += ti-ads8688.o
obj-$(CONFIG_TI_ADS124S08) += ti-ads124s08.o
obj-$(CONFIG_TI_AM335X_ADC) += ti_am335x_adc.o
diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
index ebb8de03bbce..24c70c3cefb4 100644
--- a/drivers/iio/adc/ad7606.c
+++ b/drivers/iio/adc/ad7606.c
@@ -31,7 +31,7 @@
* Scales are computed as 5000/32768 and 10000/32768 respectively,
* so that when applied to the raw values they provide mV values
*/
-static const unsigned int scale_avail[2] = {
+static const unsigned int ad7606_scale_avail[2] = {
152588, 305176
};
@@ -39,6 +39,10 @@ static const unsigned int ad7606_oversampling_avail[7] = {
1, 2, 4, 8, 16, 32, 64,
};
+static const unsigned int ad7616_oversampling_avail[8] = {
+ 1, 2, 4, 8, 16, 32, 64, 128,
+};
+
static int ad7606_reset(struct ad7606_state *st)
{
if (st->gpio_reset) {
@@ -154,7 +158,7 @@ static int ad7606_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
*val = 0;
- *val2 = scale_avail[st->range];
+ *val2 = st->scale_avail[st->range];
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
*val = st->oversampling;
@@ -163,21 +167,31 @@ static int ad7606_read_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
-static ssize_t in_voltage_scale_available_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+static ssize_t ad7606_show_avail(char *buf, const unsigned int *vals,
+ unsigned int n, bool micros)
{
- int i, len = 0;
-
- for (i = 0; i < ARRAY_SIZE(scale_avail); i++)
- len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ",
- scale_avail[i]);
+ size_t len = 0;
+ int i;
+ for (i = 0; i < n; i++) {
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ micros ? "0.%06u " : "%u ", vals[i]);
+ }
buf[len - 1] = '\n';
return len;
}
+static ssize_t in_voltage_scale_available_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct ad7606_state *st = iio_priv(indio_dev);
+
+ return ad7606_show_avail(buf, st->scale_avail, st->num_scales, true);
+}
+
static IIO_DEVICE_ATTR_RO(in_voltage_scale_available, 0);
static int ad7606_write_raw(struct iio_dev *indio_dev,
@@ -193,7 +207,7 @@ static int ad7606_write_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_SCALE:
mutex_lock(&st->lock);
- i = find_closest(val2, scale_avail, ARRAY_SIZE(scale_avail));
+ i = find_closest(val2, st->scale_avail, st->num_scales);
gpiod_set_value(st->gpio_range, i);
st->range = i;
mutex_unlock(&st->lock);
@@ -202,15 +216,20 @@ static int ad7606_write_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
if (val2)
return -EINVAL;
- i = find_closest(val, ad7606_oversampling_avail,
- ARRAY_SIZE(ad7606_oversampling_avail));
+ i = find_closest(val, st->oversampling_avail,
+ st->num_os_ratios);
values[0] = i;
mutex_lock(&st->lock);
gpiod_set_array_value(ARRAY_SIZE(values), st->gpio_os->desc,
st->gpio_os->info, values);
- st->oversampling = ad7606_oversampling_avail[i];
+
+ /* AD7616 requires a reset to update value */
+ if (st->chip_info->os_req_reset)
+ ad7606_reset(st);
+
+ st->oversampling = st->oversampling_avail[i];
mutex_unlock(&st->lock);
return 0;
@@ -219,11 +238,23 @@ static int ad7606_write_raw(struct iio_dev *indio_dev,
}
}
-static IIO_CONST_ATTR(oversampling_ratio_available, "1 2 4 8 16 32 64");
+static ssize_t ad7606_oversampling_ratio_avail(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct ad7606_state *st = iio_priv(indio_dev);
+
+ return ad7606_show_avail(buf, st->oversampling_avail,
+ st->num_os_ratios, false);
+}
+
+static IIO_DEVICE_ATTR(oversampling_ratio_available, 0444,
+ ad7606_oversampling_ratio_avail, NULL, 0);
static struct attribute *ad7606_attributes_os_and_range[] = {
&iio_dev_attr_in_voltage_scale_available.dev_attr.attr,
- &iio_const_attr_oversampling_ratio_available.dev_attr.attr,
+ &iio_dev_attr_oversampling_ratio_available.dev_attr.attr,
NULL,
};
@@ -232,7 +263,7 @@ static const struct attribute_group ad7606_attribute_group_os_and_range = {
};
static struct attribute *ad7606_attributes_os[] = {
- &iio_const_attr_oversampling_ratio_available.dev_attr.attr,
+ &iio_dev_attr_oversampling_ratio_available.dev_attr.attr,
NULL,
};
@@ -292,6 +323,36 @@ static const struct iio_chan_spec ad7606_channels[] = {
AD7606_CHANNEL(7),
};
+/*
+ * The current assumption that this driver makes for AD7616, is that it's
+ * working in Hardware Mode with Serial, Burst and Sequencer modes activated.
+ * To activate them, following pins must be pulled high:
+ * -SER/PAR
+ * -SEQEN
+ * And following pins must be pulled low:
+ * -WR/BURST
+ * -DB4/SER1W
+ */
+static const struct iio_chan_spec ad7616_channels[] = {
+ IIO_CHAN_SOFT_TIMESTAMP(16),
+ AD7606_CHANNEL(0),
+ AD7606_CHANNEL(1),
+ AD7606_CHANNEL(2),
+ AD7606_CHANNEL(3),
+ AD7606_CHANNEL(4),
+ AD7606_CHANNEL(5),
+ AD7606_CHANNEL(6),
+ AD7606_CHANNEL(7),
+ AD7606_CHANNEL(8),
+ AD7606_CHANNEL(9),
+ AD7606_CHANNEL(10),
+ AD7606_CHANNEL(11),
+ AD7606_CHANNEL(12),
+ AD7606_CHANNEL(13),
+ AD7606_CHANNEL(14),
+ AD7606_CHANNEL(15),
+};
+
static const struct ad7606_chip_info ad7606_chip_info_tbl[] = {
/* More devices added in future */
[ID_AD7605_4] = {
@@ -301,17 +362,27 @@ static const struct ad7606_chip_info ad7606_chip_info_tbl[] = {
[ID_AD7606_8] = {
.channels = ad7606_channels,
.num_channels = 9,
- .has_oversampling = true,
+ .oversampling_avail = ad7606_oversampling_avail,
+ .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606_6] = {
.channels = ad7606_channels,
.num_channels = 7,
- .has_oversampling = true,
+ .oversampling_avail = ad7606_oversampling_avail,
+ .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606_4] = {
.channels = ad7606_channels,
.num_channels = 5,
- .has_oversampling = true,
+ .oversampling_avail = ad7606_oversampling_avail,
+ .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
+ },
+ [ID_AD7616] = {
+ .channels = ad7616_channels,
+ .num_channels = 17,
+ .oversampling_avail = ad7616_oversampling_avail,
+ .oversampling_num = ARRAY_SIZE(ad7616_oversampling_avail),
+ .os_req_reset = true,
},
};
@@ -343,7 +414,7 @@ static int ad7606_request_gpios(struct ad7606_state *st)
if (IS_ERR(st->gpio_frstdata))
return PTR_ERR(st->gpio_frstdata);
- if (!st->chip_info->has_oversampling)
+ if (!st->chip_info->oversampling_num)
return 0;
st->gpio_os = devm_gpiod_get_array_optional(dev,
@@ -467,6 +538,8 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
/* tied to logic low, analog input range is +/- 5V */
st->range = 0;
st->oversampling = 1;
+ st->scale_avail = ad7606_scale_avail;
+ st->num_scales = ARRAY_SIZE(ad7606_scale_avail);
st->reg = devm_regulator_get(dev, "avcc");
if (IS_ERR(st->reg))
@@ -484,6 +557,11 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
st->chip_info = &ad7606_chip_info_tbl[id];
+ if (st->chip_info->oversampling_num) {
+ st->oversampling_avail = st->chip_info->oversampling_avail;
+ st->num_os_ratios = st->chip_info->oversampling_num;
+ }
+
ret = ad7606_request_gpios(st);
if (ret)
return ret;
diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h
index 5d12410f68e1..f9ef52131e74 100644
--- a/drivers/iio/adc/ad7606.h
+++ b/drivers/iio/adc/ad7606.h
@@ -12,12 +12,17 @@
* struct ad7606_chip_info - chip specific information
* @channels: channel specification
* @num_channels: number of channels
- * @has_oversampling: whether the device has oversampling support
+ * @oversampling_avail pointer to the array which stores the available
+ * oversampling ratios.
+ * @oversampling_num number of elements stored in oversampling_avail array
+ * @os_req_reset some devices require a reset to update oversampling
*/
struct ad7606_chip_info {
const struct iio_chan_spec *channels;
unsigned int num_channels;
- bool has_oversampling;
+ const unsigned int *oversampling_avail;
+ unsigned int oversampling_num;
+ bool os_req_reset;
};
/**
@@ -29,6 +34,11 @@ struct ad7606_chip_info {
* @range voltage range selection, selects which scale to apply
* @oversampling oversampling selection
* @base_address address from where to read data in parallel operation
+ * @scale_avail pointer to the array which stores the available scales
+ * @num_scales number of elements stored in the scale_avail array
+ * @oversampling_avail pointer to the array which stores the available
+ * oversampling ratios.
+ * @num_os_ratios number of elements stored in oversampling_avail array
* @lock protect sensor state from concurrent accesses to GPIOs
* @gpio_convst GPIO descriptor for conversion start signal (CONVST)
* @gpio_reset GPIO descriptor for device hard-reset
@@ -50,6 +60,10 @@ struct ad7606_state {
unsigned int range;
unsigned int oversampling;
void __iomem *base_address;
+ const unsigned int *scale_avail;
+ unsigned int num_scales;
+ const unsigned int *oversampling_avail;
+ unsigned int num_os_ratios;
struct mutex lock; /* protect sensor state */
struct gpio_desc *gpio_convst;
@@ -64,9 +78,9 @@ struct ad7606_state {
/*
* DMA (thus cache coherency maintenance) requires the
* transfer buffers to live in their own cache lines.
- * 8 * 16-bit samples + 64-bit timestamp
+ * 16 * 16-bit samples + 64-bit timestamp
*/
- unsigned short data[12] ____cacheline_aligned;
+ unsigned short data[20] ____cacheline_aligned;
};
/**
@@ -86,7 +100,8 @@ enum ad7606_supported_device_ids {
ID_AD7605_4,
ID_AD7606_8,
ID_AD7606_6,
- ID_AD7606_4
+ ID_AD7606_4,
+ ID_AD7616,
};
#ifdef CONFIG_PM_SLEEP
diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c
index 4fd0ec36a086..b7faef69a58f 100644
--- a/drivers/iio/adc/ad7606_spi.c
+++ b/drivers/iio/adc/ad7606_spi.c
@@ -53,6 +53,7 @@ static const struct spi_device_id ad7606_id_table[] = {
{ "ad7606-4", ID_AD7606_4 },
{ "ad7606-6", ID_AD7606_6 },
{ "ad7606-8", ID_AD7606_8 },
+ { "ad7616", ID_AD7616 },
{}
};
MODULE_DEVICE_TABLE(spi, ad7606_id_table);
@@ -62,6 +63,7 @@ static const struct of_device_id ad7606_of_match[] = {
{ .compatible = "adi,ad7606-4" },
{ .compatible = "adi,ad7606-6" },
{ .compatible = "adi,ad7606-8" },
+ { .compatible = "adi,ad7616" },
{ },
};
MODULE_DEVICE_TABLE(of, ad7606_of_match);
diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c
index ad6764fb2a23..958a34dd88ac 100644
--- a/drivers/iio/adc/imx7d_adc.c
+++ b/drivers/iio/adc/imx7d_adc.c
@@ -388,8 +388,9 @@ static irqreturn_t imx7d_adc_isr(int irq, void *dev_id)
* timeout flags.
*/
if (status & IMX7D_REG_ADC_INT_STATUS_CHANNEL_CONV_TIME_OUT) {
- pr_err("%s: ADC got conversion time out interrupt: 0x%08x\n",
- dev_name(info->dev), status);
+ dev_err(info->dev,
+ "ADC got conversion time out interrupt: 0x%08x\n",
+ status);
status &= ~IMX7D_REG_ADC_INT_STATUS_CHANNEL_CONV_TIME_OUT;
writel(status, info->regs + IMX7D_REG_ADC_INT_STATUS);
}
@@ -433,167 +434,139 @@ static void imx7d_adc_power_down(struct imx7d_adc *info)
writel(adc_cfg, info->regs + IMX7D_REG_ADC_ADC_CFG);
}
+static int imx7d_adc_enable(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct imx7d_adc *info = iio_priv(indio_dev);
+ int ret;
+
+ ret = regulator_enable(info->vref);
+ if (ret) {
+ dev_err(info->dev,
+ "Can't enable adc reference top voltage, err = %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(info->clk);
+ if (ret) {
+ dev_err(info->dev,
+ "Could not prepare or enable clock.\n");
+ regulator_disable(info->vref);
+ return ret;
+ }
+
+ imx7d_adc_hw_init(info);
+
+ return 0;
+}
+
+static int imx7d_adc_disable(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct imx7d_adc *info = iio_priv(indio_dev);
+
+ imx7d_adc_power_down(info);
+
+ clk_disable_unprepare(info->clk);
+ regulator_disable(info->vref);
+
+ return 0;
+}
+
+static void __imx7d_adc_disable(void *data)
+{
+ imx7d_adc_disable(data);
+}
+
static int imx7d_adc_probe(struct platform_device *pdev)
{
struct imx7d_adc *info;
struct iio_dev *indio_dev;
- struct resource *mem;
+ struct device *dev = &pdev->dev;
int irq;
int ret;
- indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info));
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*info));
if (!indio_dev) {
dev_err(&pdev->dev, "Failed allocating iio device\n");
return -ENOMEM;
}
info = iio_priv(indio_dev);
- info->dev = &pdev->dev;
+ info->dev = dev;
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- info->regs = devm_ioremap_resource(&pdev->dev, mem);
+ info->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(info->regs)) {
ret = PTR_ERR(info->regs);
- dev_err(&pdev->dev,
- "Failed to remap adc memory, err = %d\n", ret);
+ dev_err(dev, "Failed to remap adc memory, err = %d\n", ret);
return ret;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
- dev_err(&pdev->dev, "No irq resource?\n");
+ dev_err(dev, "No irq resource?\n");
return irq;
}
- info->clk = devm_clk_get(&pdev->dev, "adc");
+ info->clk = devm_clk_get(dev, "adc");
if (IS_ERR(info->clk)) {
ret = PTR_ERR(info->clk);
- dev_err(&pdev->dev, "Failed getting clock, err = %d\n", ret);
+ dev_err(dev, "Failed getting clock, err = %d\n", ret);
return ret;
}
- info->vref = devm_regulator_get(&pdev->dev, "vref");
+ info->vref = devm_regulator_get(dev, "vref");
if (IS_ERR(info->vref)) {
ret = PTR_ERR(info->vref);
- dev_err(&pdev->dev,
+ dev_err(dev,
"Failed getting reference voltage, err = %d\n", ret);
return ret;
}
- ret = regulator_enable(info->vref);
- if (ret) {
- dev_err(&pdev->dev,
- "Can't enable adc reference top voltage, err = %d\n",
- ret);
- return ret;
- }
-
platform_set_drvdata(pdev, indio_dev);
init_completion(&info->completion);
- indio_dev->name = dev_name(&pdev->dev);
- indio_dev->dev.parent = &pdev->dev;
+ indio_dev->name = dev_name(dev);
+ indio_dev->dev.parent = dev;
indio_dev->info = &imx7d_adc_iio_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = imx7d_adc_iio_channels;
indio_dev->num_channels = ARRAY_SIZE(imx7d_adc_iio_channels);
- ret = clk_prepare_enable(info->clk);
- if (ret) {
- dev_err(&pdev->dev,
- "Could not prepare or enable the clock.\n");
- goto error_adc_clk_enable;
- }
-
- ret = devm_request_irq(info->dev, irq,
- imx7d_adc_isr, 0,
- dev_name(&pdev->dev), info);
+ ret = devm_request_irq(dev, irq,
+ imx7d_adc_isr, 0,
+ dev_name(dev), info);
if (ret < 0) {
- dev_err(&pdev->dev, "Failed requesting irq, irq = %d\n", irq);
- goto error_iio_device_register;
+ dev_err(dev, "Failed requesting irq, irq = %d\n", irq);
+ return ret;
}
imx7d_adc_feature_config(info);
- imx7d_adc_hw_init(info);
-
- ret = iio_device_register(indio_dev);
- if (ret) {
- imx7d_adc_power_down(info);
- dev_err(&pdev->dev, "Couldn't register the device.\n");
- goto error_iio_device_register;
- }
-
- return 0;
-
-error_iio_device_register:
- clk_disable_unprepare(info->clk);
-error_adc_clk_enable:
- regulator_disable(info->vref);
-
- return ret;
-}
-
-static int imx7d_adc_remove(struct platform_device *pdev)
-{
- struct iio_dev *indio_dev = platform_get_drvdata(pdev);
- struct imx7d_adc *info = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
-
- imx7d_adc_power_down(info);
-
- clk_disable_unprepare(info->clk);
- regulator_disable(info->vref);
-
- return 0;
-}
-
-static int __maybe_unused imx7d_adc_suspend(struct device *dev)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct imx7d_adc *info = iio_priv(indio_dev);
-
- imx7d_adc_power_down(info);
-
- clk_disable_unprepare(info->clk);
- regulator_disable(info->vref);
-
- return 0;
-}
-static int __maybe_unused imx7d_adc_resume(struct device *dev)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct imx7d_adc *info = iio_priv(indio_dev);
- int ret;
+ ret = imx7d_adc_enable(&indio_dev->dev);
+ if (ret)
+ return ret;
- ret = regulator_enable(info->vref);
- if (ret) {
- dev_err(info->dev,
- "Can't enable adc reference top voltage, err = %d\n",
- ret);
+ ret = devm_add_action_or_reset(dev, __imx7d_adc_disable,
+ &indio_dev->dev);
+ if (ret)
return ret;
- }
- ret = clk_prepare_enable(info->clk);
+ ret = devm_iio_device_register(dev, indio_dev);
if (ret) {
- dev_err(info->dev,
- "Could not prepare or enable clock.\n");
- regulator_disable(info->vref);
+ dev_err(&pdev->dev, "Couldn't register the device.\n");
return ret;
}
- imx7d_adc_hw_init(info);
-
return 0;
}
-static SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_suspend, imx7d_adc_resume);
+static SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_disable, imx7d_adc_enable);
static struct platform_driver imx7d_adc_driver = {
.probe = imx7d_adc_probe,
- .remove = imx7d_adc_remove,
.driver = {
.name = "imx7d_adc",
.of_match_table = imx7d_adc_match,
diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c
index 6a866cc187f7..21fdcde77883 100644
--- a/drivers/iio/adc/qcom-spmi-adc5.c
+++ b/drivers/iio/adc/qcom-spmi-adc5.c
@@ -664,6 +664,7 @@ static const struct of_device_id adc5_match_table[] = {
},
{ }
};
+MODULE_DEVICE_TABLE(of, adc5_match_table);
static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
{
diff --git a/drivers/iio/adc/ti-ads8344.c b/drivers/iio/adc/ti-ads8344.c
new file mode 100644
index 000000000000..9a460807d46d
--- /dev/null
+++ b/drivers/iio/adc/ti-ads8344.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * ADS8344 16-bit 8-Channel ADC driver
+ *
+ * Author: Gregory CLEMENT <gregory.clement@bootlin.com>
+ *
+ * Datasheet: http://www.ti.com/lit/ds/symlink/ads8344.pdf
+ */
+
+#include <linux/delay.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#define ADS8344_START BIT(7)
+#define ADS8344_SINGLE_END BIT(2)
+#define ADS8344_CHANNEL(channel) ((channel) << 4)
+#define ADS8344_CLOCK_INTERNAL 0x2 /* PD1 = 1 and PD0 = 0 */
+
+struct ads8344 {
+ struct spi_device *spi;
+ struct regulator *reg;
+ /*
+ * Lock protecting access to adc->tx_buff and rx_buff,
+ * especially from concurrent read on sysfs file.
+ */
+ struct mutex lock;
+
+ u8 tx_buf ____cacheline_aligned;
+ u16 rx_buf;
+};
+
+#define ADS8344_VOLTAGE_CHANNEL(chan, si) \
+ { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = chan, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ }
+
+#define ADS8344_VOLTAGE_CHANNEL_DIFF(chan1, chan2, si) \
+ { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = (chan1), \
+ .channel2 = (chan2), \
+ .differential = 1, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ }
+
+static const struct iio_chan_spec ads8344_channels[] = {
+ ADS8344_VOLTAGE_CHANNEL(0, 0),
+ ADS8344_VOLTAGE_CHANNEL(1, 4),
+ ADS8344_VOLTAGE_CHANNEL(2, 1),
+ ADS8344_VOLTAGE_CHANNEL(3, 5),
+ ADS8344_VOLTAGE_CHANNEL(4, 2),
+ ADS8344_VOLTAGE_CHANNEL(5, 6),
+ ADS8344_VOLTAGE_CHANNEL(6, 3),
+ ADS8344_VOLTAGE_CHANNEL(7, 7),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(0, 1, 8),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(2, 3, 9),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(4, 5, 10),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(6, 7, 11),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(1, 0, 12),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(3, 2, 13),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(5, 4, 14),
+ ADS8344_VOLTAGE_CHANNEL_DIFF(7, 6, 15),
+};
+
+static int ads8344_adc_conversion(struct ads8344 *adc, int channel,
+ bool differential)
+{
+ struct spi_device *spi = adc->spi;
+ int ret;
+
+ adc->tx_buf = ADS8344_START;
+ if (!differential)
+ adc->tx_buf |= ADS8344_SINGLE_END;
+ adc->tx_buf |= ADS8344_CHANNEL(channel);
+ adc->tx_buf |= ADS8344_CLOCK_INTERNAL;
+
+ ret = spi_write(spi, &adc->tx_buf, 1);
+ if (ret)
+ return ret;
+
+ udelay(9);
+
+ ret = spi_read(spi, &adc->rx_buf, 2);
+ if (ret)
+ return ret;
+
+ return adc->rx_buf;
+}
+
+static int ads8344_read_raw(struct iio_dev *iio,
+ struct iio_chan_spec const *channel, int *value,
+ int *shift, long mask)
+{
+ struct ads8344 *adc = iio_priv(iio);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ mutex_lock(&adc->lock);
+ *value = ads8344_adc_conversion(adc, channel->scan_index,
+ channel->differential);
+ mutex_unlock(&adc->lock);
+ if (*value < 0)
+ return *value;
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SCALE:
+ *value = regulator_get_voltage(adc->reg);
+ if (*value < 0)
+ return *value;
+
+ /* convert regulator output voltage to mV */
+ *value /= 1000;
+ *shift = 16;
+
+ return IIO_VAL_FRACTIONAL_LOG2;
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct iio_info ads8344_info = {
+ .read_raw = ads8344_read_raw,
+};
+
+static int ads8344_probe(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev;
+ struct ads8344 *adc;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ adc = iio_priv(indio_dev);
+ adc->spi = spi;
+ mutex_init(&adc->lock);
+
+ indio_dev->name = dev_name(&spi->dev);
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
+ indio_dev->info = &ads8344_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = ads8344_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ads8344_channels);
+
+ adc->reg = devm_regulator_get(&spi->dev, "vref");
+ if (IS_ERR(adc->reg))
+ return PTR_ERR(adc->reg);
+
+ ret = regulator_enable(adc->reg);
+ if (ret)
+ return ret;
+
+ spi_set_drvdata(spi, indio_dev);
+
+ ret = iio_device_register(indio_dev);
+ if (ret) {
+ regulator_disable(adc->reg);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ads8344_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct ads8344 *adc = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ regulator_disable(adc->reg);
+
+ return 0;
+}
+
+static const struct of_device_id ads8344_of_match[] = {
+ { .compatible = "ti,ads8344", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, ads8344_of_match);
+
+static struct spi_driver ads8344_driver = {
+ .driver = {
+ .name = "ads8344",
+ .of_match_table = ads8344_of_match,
+ },
+ .probe = ads8344_probe,
+ .remove = ads8344_remove,
+};
+module_spi_driver(ads8344_driver);
+
+MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@bootlin.com>");
+MODULE_DESCRIPTION("ADS8344 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/dac/ad5758.c b/drivers/iio/dac/ad5758.c
index 2bdf1b0aee06..a513c70faefa 100644
--- a/drivers/iio/dac/ad5758.c
+++ b/drivers/iio/dac/ad5758.c
@@ -72,8 +72,6 @@
#define AD5758_DCDC_CONFIG1_DCDC_VPROG_MODE(x) (((x) & 0x1F) << 0)
#define AD5758_DCDC_CONFIG1_DCDC_MODE_MSK GENMASK(6, 5)
#define AD5758_DCDC_CONFIG1_DCDC_MODE_MODE(x) (((x) & 0x3) << 5)
-#define AD5758_DCDC_CONFIG1_PROT_SW_EN_MSK BIT(7)
-#define AD5758_DCDC_CONFIG1_PROT_SW_EN_MODE(x) (((x) & 0x1) << 7)
/* AD5758_DCDC_CONFIG2 */
#define AD5758_DCDC_CONFIG2_ILIMIT_MSK GENMASK(3, 1)
@@ -84,6 +82,10 @@
/* AD5758_DIGITAL_DIAG_RESULTS */
#define AD5758_CAL_MEM_UNREFRESHED_MSK BIT(15)
+/* AD5758_ADC_CONFIG */
+#define AD5758_ADC_CONFIG_PPC_BUF_EN(x) (((x) & 0x1) << 11)
+#define AD5758_ADC_CONFIG_PPC_BUF_MSK BIT(11)
+
#define AD5758_WR_FLAG_MSK(x) (0x80 | ((x) & 0x1F))
#define AD5758_FULL_SCALE_MICRO 65535000000ULL
@@ -315,6 +317,18 @@ static int ad5758_set_dc_dc_conv_mode(struct ad5758_state *st,
{
int ret;
+ /*
+ * The ENABLE_PPC_BUFFERS bit must be set prior to enabling PPC current
+ * mode.
+ */
+ if (mode == AD5758_DCDC_MODE_PPC_CURRENT) {
+ ret = ad5758_spi_write_mask(st, AD5758_ADC_CONFIG,
+ AD5758_ADC_CONFIG_PPC_BUF_MSK,
+ AD5758_ADC_CONFIG_PPC_BUF_EN(1));
+ if (ret < 0)
+ return ret;
+ }
+
ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG1,
AD5758_DCDC_CONFIG1_DCDC_MODE_MSK,
AD5758_DCDC_CONFIG1_DCDC_MODE_MODE(mode));
@@ -444,23 +458,6 @@ static int ad5758_set_out_range(struct ad5758_state *st, int range)
AD5758_CAL_MEM_UNREFRESHED_MSK);
}
-static int ad5758_fault_prot_switch_en(struct ad5758_state *st, bool enable)
-{
- int ret;
-
- ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG1,
- AD5758_DCDC_CONFIG1_PROT_SW_EN_MSK,
- AD5758_DCDC_CONFIG1_PROT_SW_EN_MODE(enable));
- if (ret < 0)
- return ret;
- /*
- * Poll the BUSY_3WI bit in the DCDC_CONFIG2 register until it is 0.
- * This allows the 3-wire interface communication to complete.
- */
- return ad5758_wait_for_task_complete(st, AD5758_DCDC_CONFIG2,
- AD5758_DCDC_CONFIG2_BUSY_3WI_MSK);
-}
-
static int ad5758_internal_buffers_en(struct ad5758_state *st, bool enable)
{
int ret;
@@ -585,8 +582,8 @@ static ssize_t ad5758_write_powerdown(struct iio_dev *indio_dev,
{
struct ad5758_state *st = iio_priv(indio_dev);
bool pwr_down;
- unsigned int dcdc_config1_mode, dc_dc_mode, dac_config_mode, val;
- unsigned long int dcdc_config1_msk, dac_config_msk;
+ unsigned int dc_dc_mode, dac_config_mode, val;
+ unsigned long int dac_config_msk;
int ret;
ret = kstrtobool(buf, &pwr_down);
@@ -602,17 +599,6 @@ static ssize_t ad5758_write_powerdown(struct iio_dev *indio_dev,
val = 1;
}
- dcdc_config1_mode = AD5758_DCDC_CONFIG1_DCDC_MODE_MODE(dc_dc_mode) |
- AD5758_DCDC_CONFIG1_PROT_SW_EN_MODE(val);
- dcdc_config1_msk = AD5758_DCDC_CONFIG1_DCDC_MODE_MSK |
- AD5758_DCDC_CONFIG1_PROT_SW_EN_MSK;
-
- ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG1,
- dcdc_config1_msk,
- dcdc_config1_mode);
- if (ret < 0)
- goto err_unlock;
-
dac_config_mode = AD5758_DAC_CONFIG_OUT_EN_MODE(val) |
AD5758_DAC_CONFIG_INT_EN_MODE(val);
dac_config_msk = AD5758_DAC_CONFIG_OUT_EN_MSK |
@@ -841,11 +827,6 @@ static int ad5758_init(struct ad5758_state *st)
return ret;
}
- /* Enable the VIOUT fault protection switch (FPS is closed) */
- ret = ad5758_fault_prot_switch_en(st, 1);
- if (ret < 0)
- return ret;
-
/* Power up the DAC and internal (INT) amplifiers */
ret = ad5758_internal_buffers_en(st, 1);
if (ret < 0)
diff --git a/drivers/iio/dummy/iio_dummy_evgen.c b/drivers/iio/dummy/iio_dummy_evgen.c
index efd0005f59b4..c6033e341963 100644
--- a/drivers/iio/dummy/iio_dummy_evgen.c
+++ b/drivers/iio/dummy/iio_dummy_evgen.c
@@ -196,7 +196,10 @@ static __init int iio_dummy_evgen_init(void)
return ret;
device_initialize(&iio_evgen_dev);
dev_set_name(&iio_evgen_dev, "iio_evgen");
- return device_add(&iio_evgen_dev);
+ ret = device_add(&iio_evgen_dev);
+ if (ret)
+ put_device(&iio_evgen_dev);
+ return ret;
}
module_init(iio_dummy_evgen_init);
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index 3126cf05e6b9..61c00cee037d 100644
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -73,6 +73,28 @@ config BMG160_SPI
tristate
select REGMAP_SPI
+config FXAS21002C
+ tristate "NXP FXAS21002C Gyro Sensor"
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ select FXAS21002C_I2C if (I2C)
+ select FXAS21002C_SPI if (SPI)
+ depends on (I2C || SPI_MASTER)
+ help
+ Say yes here to build support for NXP FXAS21002C Tri-axis Gyro
+ Sensor driver connected via I2C or SPI.
+
+ This driver can also be built as a module. If so, the module
+ will be called fxas21002c_i2c or fxas21002c_spi.
+
+config FXAS21002C_I2C
+ tristate
+ select REGMAP_I2C
+
+config FXAS21002C_SPI
+ tristate
+ select REGMAP_SPI
+
config HID_SENSOR_GYRO_3D
depends on HID_SENSOR_HUB
select IIO_BUFFER
diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile
index 295ec780c4eb..45cbd5dc644e 100644
--- a/drivers/iio/gyro/Makefile
+++ b/drivers/iio/gyro/Makefile
@@ -12,6 +12,9 @@ obj-$(CONFIG_ADXRS450) += adxrs450.o
obj-$(CONFIG_BMG160) += bmg160_core.o
obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o
obj-$(CONFIG_BMG160_SPI) += bmg160_spi.o
+obj-$(CONFIG_FXAS21002C) += fxas21002c_core.o
+obj-$(CONFIG_FXAS21002C_I2C) += fxas21002c_i2c.o
+obj-$(CONFIG_FXAS21002C_SPI) += fxas21002c_spi.o
obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
diff --git a/drivers/iio/gyro/fxas21002c.h b/drivers/iio/gyro/fxas21002c.h
new file mode 100644
index 000000000000..566d92de2676
--- /dev/null
+++ b/drivers/iio/gyro/fxas21002c.h
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Driver for NXP FXAS21002C Gyroscope - Header
+ *
+ * Copyright (C) 2019 Linaro Ltd.
+ */
+
+#ifndef FXAS21002C_H_
+#define FXAS21002C_H_
+
+#include <linux/regmap.h>
+
+#define FXAS21002C_REG_STATUS 0x00
+#define FXAS21002C_REG_OUT_X_MSB 0x01
+#define FXAS21002C_REG_OUT_X_LSB 0x02
+#define FXAS21002C_REG_OUT_Y_MSB 0x03
+#define FXAS21002C_REG_OUT_Y_LSB 0x04
+#define FXAS21002C_REG_OUT_Z_MSB 0x05
+#define FXAS21002C_REG_OUT_Z_LSB 0x06
+#define FXAS21002C_REG_DR_STATUS 0x07
+#define FXAS21002C_REG_F_STATUS 0x08
+#define FXAS21002C_REG_F_SETUP 0x09
+#define FXAS21002C_REG_F_EVENT 0x0A
+#define FXAS21002C_REG_INT_SRC_FLAG 0x0B
+#define FXAS21002C_REG_WHO_AM_I 0x0C
+#define FXAS21002C_REG_CTRL0 0x0D
+#define FXAS21002C_REG_RT_CFG 0x0E
+#define FXAS21002C_REG_RT_SRC 0x0F
+#define FXAS21002C_REG_RT_THS 0x10
+#define FXAS21002C_REG_RT_COUNT 0x11
+#define FXAS21002C_REG_TEMP 0x12
+#define FXAS21002C_REG_CTRL1 0x13
+#define FXAS21002C_REG_CTRL2 0x14
+#define FXAS21002C_REG_CTRL3 0x15
+
+enum fxas21002c_fields {
+ F_DR_STATUS,
+ F_OUT_X_MSB,
+ F_OUT_X_LSB,
+ F_OUT_Y_MSB,
+ F_OUT_Y_LSB,
+ F_OUT_Z_MSB,
+ F_OUT_Z_LSB,
+ /* DR_STATUS */
+ F_ZYX_OW, F_Z_OW, F_Y_OW, F_X_OW, F_ZYX_DR, F_Z_DR, F_Y_DR, F_X_DR,
+ /* F_STATUS */
+ F_OVF, F_WMKF, F_CNT,
+ /* F_SETUP */
+ F_MODE, F_WMRK,
+ /* F_EVENT */
+ F_EVENT, FE_TIME,
+ /* INT_SOURCE_FLAG */
+ F_BOOTEND, F_SRC_FIFO, F_SRC_RT, F_SRC_DRDY,
+ /* WHO_AM_I */
+ F_WHO_AM_I,
+ /* CTRL_REG0 */
+ F_BW, F_SPIW, F_SEL, F_HPF_EN, F_FS,
+ /* RT_CFG */
+ F_ELE, F_ZTEFE, F_YTEFE, F_XTEFE,
+ /* RT_SRC */
+ F_EA, F_ZRT, F_ZRT_POL, F_YRT, F_YRT_POL, F_XRT, F_XRT_POL,
+ /* RT_THS */
+ F_DBCNTM, F_THS,
+ /* RT_COUNT */
+ F_RT_COUNT,
+ /* TEMP */
+ F_TEMP,
+ /* CTRL_REG1 */
+ F_RST, F_ST, F_DR, F_ACTIVE, F_READY,
+ /* CTRL_REG2 */
+ F_INT_CFG_FIFO, F_INT_EN_FIFO, F_INT_CFG_RT, F_INT_EN_RT,
+ F_INT_CFG_DRDY, F_INT_EN_DRDY, F_IPOL, F_PP_OD,
+ /* CTRL_REG3 */
+ F_WRAPTOONE, F_EXTCTRLEN, F_FS_DOUBLE,
+ /* MAX FIELDS */
+ F_MAX_FIELDS,
+};
+
+static const struct reg_field fxas21002c_reg_fields[] = {
+ [F_DR_STATUS] = REG_FIELD(FXAS21002C_REG_STATUS, 0, 7),
+ [F_OUT_X_MSB] = REG_FIELD(FXAS21002C_REG_OUT_X_MSB, 0, 7),
+ [F_OUT_X_LSB] = REG_FIELD(FXAS21002C_REG_OUT_X_LSB, 0, 7),
+ [F_OUT_Y_MSB] = REG_FIELD(FXAS21002C_REG_OUT_Y_MSB, 0, 7),
+ [F_OUT_Y_LSB] = REG_FIELD(FXAS21002C_REG_OUT_Y_LSB, 0, 7),
+ [F_OUT_Z_MSB] = REG_FIELD(FXAS21002C_REG_OUT_Z_MSB, 0, 7),
+ [F_OUT_Z_LSB] = REG_FIELD(FXAS21002C_REG_OUT_Z_LSB, 0, 7),
+ [F_ZYX_OW] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 7, 7),
+ [F_Z_OW] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 6, 6),
+ [F_Y_OW] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 5, 5),
+ [F_X_OW] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 4, 4),
+ [F_ZYX_DR] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 3, 3),
+ [F_Z_DR] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 2, 2),
+ [F_Y_DR] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 1, 1),
+ [F_X_DR] = REG_FIELD(FXAS21002C_REG_DR_STATUS, 0, 0),
+ [F_OVF] = REG_FIELD(FXAS21002C_REG_F_STATUS, 7, 7),
+ [F_WMKF] = REG_FIELD(FXAS21002C_REG_F_STATUS, 6, 6),
+ [F_CNT] = REG_FIELD(FXAS21002C_REG_F_STATUS, 0, 5),
+ [F_MODE] = REG_FIELD(FXAS21002C_REG_F_SETUP, 6, 7),
+ [F_WMRK] = REG_FIELD(FXAS21002C_REG_F_SETUP, 0, 5),
+ [F_EVENT] = REG_FIELD(FXAS21002C_REG_F_EVENT, 5, 5),
+ [FE_TIME] = REG_FIELD(FXAS21002C_REG_F_EVENT, 0, 4),
+ [F_BOOTEND] = REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 3, 3),
+ [F_SRC_FIFO] = REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 2, 2),
+ [F_SRC_RT] = REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 1, 1),
+ [F_SRC_DRDY] = REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 0, 0),
+ [F_WHO_AM_I] = REG_FIELD(FXAS21002C_REG_WHO_AM_I, 0, 7),
+ [F_BW] = REG_FIELD(FXAS21002C_REG_CTRL0, 6, 7),
+ [F_SPIW] = REG_FIELD(FXAS21002C_REG_CTRL0, 5, 5),
+ [F_SEL] = REG_FIELD(FXAS21002C_REG_CTRL0, 3, 4),
+ [F_HPF_EN] = REG_FIELD(FXAS21002C_REG_CTRL0, 2, 2),
+ [F_FS] = REG_FIELD(FXAS21002C_REG_CTRL0, 0, 1),
+ [F_ELE] = REG_FIELD(FXAS21002C_REG_RT_CFG, 3, 3),
+ [F_ZTEFE] = REG_FIELD(FXAS21002C_REG_RT_CFG, 2, 2),
+ [F_YTEFE] = REG_FIELD(FXAS21002C_REG_RT_CFG, 1, 1),
+ [F_XTEFE] = REG_FIELD(FXAS21002C_REG_RT_CFG, 0, 0),
+ [F_EA] = REG_FIELD(FXAS21002C_REG_RT_SRC, 6, 6),
+ [F_ZRT] = REG_FIELD(FXAS21002C_REG_RT_SRC, 5, 5),
+ [F_ZRT_POL] = REG_FIELD(FXAS21002C_REG_RT_SRC, 4, 4),
+ [F_YRT] = REG_FIELD(FXAS21002C_REG_RT_SRC, 3, 3),
+ [F_YRT_POL] = REG_FIELD(FXAS21002C_REG_RT_SRC, 2, 2),
+ [F_XRT] = REG_FIELD(FXAS21002C_REG_RT_SRC, 1, 1),
+ [F_XRT_POL] = REG_FIELD(FXAS21002C_REG_RT_SRC, 0, 0),
+ [F_DBCNTM] = REG_FIELD(FXAS21002C_REG_RT_THS, 7, 7),
+ [F_THS] = REG_FIELD(FXAS21002C_REG_RT_SRC, 0, 6),
+ [F_RT_COUNT] = REG_FIELD(FXAS21002C_REG_RT_COUNT, 0, 7),
+ [F_TEMP] = REG_FIELD(FXAS21002C_REG_TEMP, 0, 7),
+ [F_RST] = REG_FIELD(FXAS21002C_REG_CTRL1, 6, 6),
+ [F_ST] = REG_FIELD(FXAS21002C_REG_CTRL1, 5, 5),
+ [F_DR] = REG_FIELD(FXAS21002C_REG_CTRL1, 2, 4),
+ [F_ACTIVE] = REG_FIELD(FXAS21002C_REG_CTRL1, 1, 1),
+ [F_READY] = REG_FIELD(FXAS21002C_REG_CTRL1, 0, 0),
+ [F_INT_CFG_FIFO] = REG_FIELD(FXAS21002C_REG_CTRL2, 7, 7),
+ [F_INT_EN_FIFO] = REG_FIELD(FXAS21002C_REG_CTRL2, 6, 6),
+ [F_INT_CFG_RT] = REG_FIELD(FXAS21002C_REG_CTRL2, 5, 5),
+ [F_INT_EN_RT] = REG_FIELD(FXAS21002C_REG_CTRL2, 4, 4),
+ [F_INT_CFG_DRDY] = REG_FIELD(FXAS21002C_REG_CTRL2, 3, 3),
+ [F_INT_EN_DRDY] = REG_FIELD(FXAS21002C_REG_CTRL2, 2, 2),
+ [F_IPOL] = REG_FIELD(FXAS21002C_REG_CTRL2, 1, 1),
+ [F_PP_OD] = REG_FIELD(FXAS21002C_REG_CTRL2, 0, 0),
+ [F_WRAPTOONE] = REG_FIELD(FXAS21002C_REG_CTRL3, 3, 3),
+ [F_EXTCTRLEN] = REG_FIELD(FXAS21002C_REG_CTRL3, 2, 2),
+ [F_FS_DOUBLE] = REG_FIELD(FXAS21002C_REG_CTRL3, 0, 0),
+};
+
+extern const struct dev_pm_ops fxas21002c_pm_ops;
+
+int fxas21002c_core_probe(struct device *dev, struct regmap *regmap, int irq,
+ const char *name);
+void fxas21002c_core_remove(struct device *dev);
+#endif
diff --git a/drivers/iio/gyro/fxas21002c_core.c b/drivers/iio/gyro/fxas21002c_core.c
new file mode 100644
index 000000000000..89d2bb2282ea
--- /dev/null
+++ b/drivers/iio/gyro/fxas21002c_core.c
@@ -0,0 +1,1004 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for NXP FXAS21002C Gyroscope - Core
+ *
+ * Copyright (C) 2019 Linaro Ltd.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/iio/events.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>
+
+#include "fxas21002c.h"
+
+#define FXAS21002C_CHIP_ID_1 0xD6
+#define FXAS21002C_CHIP_ID_2 0xD7
+
+enum fxas21002c_mode_state {
+ FXAS21002C_MODE_STANDBY,
+ FXAS21002C_MODE_READY,
+ FXAS21002C_MODE_ACTIVE,
+};
+
+#define FXAS21002C_STANDBY_ACTIVE_TIME_MS 62
+#define FXAS21002C_READY_ACTIVE_TIME_MS 7
+
+#define FXAS21002C_ODR_LIST_MAX 10
+
+#define FXAS21002C_SCALE_FRACTIONAL 32
+#define FXAS21002C_RANGE_LIMIT_DOUBLE 2000
+
+#define FXAS21002C_AXIS_TO_REG(axis) (FXAS21002C_REG_OUT_X_MSB + ((axis) * 2))
+
+static const int fxas21002c_odr_values[] = {
+ 800, 400, 200, 100, 50, 25, 12, 12
+};
+
+/*
+ * These values are taken from the low-pass filter cutoff frequency calculated
+ * ODR * 0.lpf_values. So, for ODR = 800Hz with a lpf value = 0.32
+ * => LPF cutoff frequency = 800 * 0.32 = 256 Hz
+ */
+static const int fxas21002c_lpf_values[] = {
+ 32, 16, 8
+};
+
+/*
+ * These values are taken from the high-pass filter cutoff frequency calculated
+ * ODR * 0.0hpf_values. So, for ODR = 800Hz with a hpf value = 0.018750
+ * => HPF cutoff frequency = 800 * 0.018750 = 15 Hz
+ */
+static const int fxas21002c_hpf_values[] = {
+ 18750, 9625, 4875, 2475
+};
+
+static const int fxas21002c_range_values[] = {
+ 4000, 2000, 1000, 500, 250
+};
+
+struct fxas21002c_data {
+ u8 chip_id;
+ enum fxas21002c_mode_state mode;
+ enum fxas21002c_mode_state prev_mode;
+
+ struct mutex lock; /* serialize data access */
+ struct regmap *regmap;
+ struct regmap_field *regmap_fields[F_MAX_FIELDS];
+ struct iio_trigger *dready_trig;
+ s64 timestamp;
+ int irq;
+
+ struct regulator *vdd;
+ struct regulator *vddio;
+
+ /*
+ * DMA (thus cache coherency maintenance) requires the
+ * transfer buffers to live in their own cache lines.
+ */
+ s16 buffer[8] ____cacheline_aligned;
+};
+
+enum fxas21002c_channel_index {
+ CHANNEL_SCAN_INDEX_X,
+ CHANNEL_SCAN_INDEX_Y,
+ CHANNEL_SCAN_INDEX_Z,
+ CHANNEL_SCAN_MAX,
+};
+
+static int fxas21002c_odr_hz_from_value(struct fxas21002c_data *data, u8 value)
+{
+ int odr_value_max = ARRAY_SIZE(fxas21002c_odr_values) - 1;
+
+ value = min_t(u8, value, odr_value_max);
+
+ return fxas21002c_odr_values[value];
+}
+
+static int fxas21002c_odr_value_from_hz(struct fxas21002c_data *data,
+ unsigned int hz)
+{
+ int odr_table_size = ARRAY_SIZE(fxas21002c_odr_values);
+ int i;
+
+ for (i = 0; i < odr_table_size; i++)
+ if (fxas21002c_odr_values[i] == hz)
+ return i;
+
+ return -EINVAL;
+}
+
+static int fxas21002c_lpf_bw_from_value(struct fxas21002c_data *data, u8 value)
+{
+ int lpf_value_max = ARRAY_SIZE(fxas21002c_lpf_values) - 1;
+
+ value = min_t(u8, value, lpf_value_max);
+
+ return fxas21002c_lpf_values[value];
+}
+
+static int fxas21002c_lpf_value_from_bw(struct fxas21002c_data *data,
+ unsigned int hz)
+{
+ int lpf_table_size = ARRAY_SIZE(fxas21002c_lpf_values);
+ int i;
+
+ for (i = 0; i < lpf_table_size; i++)
+ if (fxas21002c_lpf_values[i] == hz)
+ return i;
+
+ return -EINVAL;
+}
+
+static int fxas21002c_hpf_sel_from_value(struct fxas21002c_data *data, u8 value)
+{
+ int hpf_value_max = ARRAY_SIZE(fxas21002c_hpf_values) - 1;
+
+ value = min_t(u8, value, hpf_value_max);
+
+ return fxas21002c_hpf_values[value];
+}
+
+static int fxas21002c_hpf_value_from_sel(struct fxas21002c_data *data,
+ unsigned int hz)
+{
+ int hpf_table_size = ARRAY_SIZE(fxas21002c_hpf_values);
+ int i;
+
+ for (i = 0; i < hpf_table_size; i++)
+ if (fxas21002c_hpf_values[i] == hz)
+ return i;
+
+ return -EINVAL;
+}
+
+static int fxas21002c_range_fs_from_value(struct fxas21002c_data *data,
+ u8 value)
+{
+ int range_value_max = ARRAY_SIZE(fxas21002c_range_values) - 1;
+ unsigned int fs_double;
+ int ret;
+
+ /* We need to check if FS_DOUBLE is enabled to offset the value */
+ ret = regmap_field_read(data->regmap_fields[F_FS_DOUBLE], &fs_double);
+ if (ret < 0)
+ return ret;
+
+ if (!fs_double)
+ value += 1;
+
+ value = min_t(u8, value, range_value_max);
+
+ return fxas21002c_range_values[value];
+}
+
+static int fxas21002c_range_value_from_fs(struct fxas21002c_data *data,
+ unsigned int range)
+{
+ int range_table_size = ARRAY_SIZE(fxas21002c_range_values);
+ bool found = false;
+ int fs_double = 0;
+ int ret;
+ int i;
+
+ for (i = 0; i < range_table_size; i++)
+ if (fxas21002c_range_values[i] == range) {
+ found = true;
+ break;
+ }
+
+ if (!found)
+ return -EINVAL;
+
+ if (range > FXAS21002C_RANGE_LIMIT_DOUBLE)
+ fs_double = 1;
+
+ ret = regmap_field_write(data->regmap_fields[F_FS_DOUBLE], fs_double);
+ if (ret < 0)
+ return ret;
+
+ return i;
+}
+
+static int fxas21002c_mode_get(struct fxas21002c_data *data)
+{
+ unsigned int active;
+ unsigned int ready;
+ int ret;
+
+ ret = regmap_field_read(data->regmap_fields[F_ACTIVE], &active);
+ if (ret < 0)
+ return ret;
+ if (active)
+ return FXAS21002C_MODE_ACTIVE;
+
+ ret = regmap_field_read(data->regmap_fields[F_READY], &ready);
+ if (ret < 0)
+ return ret;
+ if (ready)
+ return FXAS21002C_MODE_READY;
+
+ return FXAS21002C_MODE_STANDBY;
+}
+
+static int fxas21002c_mode_set(struct fxas21002c_data *data,
+ enum fxas21002c_mode_state mode)
+{
+ int ret;
+
+ if (mode == data->mode)
+ return 0;
+
+ if (mode == FXAS21002C_MODE_READY)
+ ret = regmap_field_write(data->regmap_fields[F_READY], 1);
+ else
+ ret = regmap_field_write(data->regmap_fields[F_READY], 0);
+ if (ret < 0)
+ return ret;
+
+ if (mode == FXAS21002C_MODE_ACTIVE)
+ ret = regmap_field_write(data->regmap_fields[F_ACTIVE], 1);
+ else
+ ret = regmap_field_write(data->regmap_fields[F_ACTIVE], 0);
+ if (ret < 0)
+ return ret;
+
+ /* if going to active wait the setup times */
+ if (mode == FXAS21002C_MODE_ACTIVE &&
+ data->mode == FXAS21002C_MODE_STANDBY)
+ msleep_interruptible(FXAS21002C_STANDBY_ACTIVE_TIME_MS);
+
+ if (data->mode == FXAS21002C_MODE_READY)
+ msleep_interruptible(FXAS21002C_READY_ACTIVE_TIME_MS);
+
+ data->prev_mode = data->mode;
+ data->mode = mode;
+
+ return ret;
+}
+
+static int fxas21002c_write(struct fxas21002c_data *data,
+ enum fxas21002c_fields field, int bits)
+{
+ int actual_mode;
+ int ret;
+
+ mutex_lock(&data->lock);
+
+ actual_mode = fxas21002c_mode_get(data);
+ if (actual_mode < 0) {
+ ret = actual_mode;
+ goto out_unlock;
+ }
+
+ ret = fxas21002c_mode_set(data, FXAS21002C_MODE_READY);
+ if (ret < 0)
+ goto out_unlock;
+
+ ret = regmap_field_write(data->regmap_fields[field], bits);
+ if (ret < 0)
+ goto out_unlock;
+
+ ret = fxas21002c_mode_set(data, data->prev_mode);
+
+out_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_pm_get(struct fxas21002c_data *data)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ int ret;
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
+ pm_runtime_put_noidle(dev);
+
+ return ret;
+}
+
+static int fxas21002c_pm_put(struct fxas21002c_data *data)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+
+ pm_runtime_mark_last_busy(dev);
+
+ return pm_runtime_put_autosuspend(dev);
+}
+
+static int fxas21002c_temp_get(struct fxas21002c_data *data, int *val)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ unsigned int temp;
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = fxas21002c_pm_get(data);
+ if (ret < 0)
+ goto data_unlock;
+
+ ret = regmap_field_read(data->regmap_fields[F_TEMP], &temp);
+ if (ret < 0) {
+ dev_err(dev, "failed to read temp: %d\n", ret);
+ goto data_unlock;
+ }
+
+ *val = sign_extend32(temp, 7);
+
+ ret = fxas21002c_pm_put(data);
+ if (ret < 0)
+ goto data_unlock;
+
+ ret = IIO_VAL_INT;
+
+data_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_axis_get(struct fxas21002c_data *data,
+ int index, int *val)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ __be16 axis_be;
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = fxas21002c_pm_get(data);
+ if (ret < 0)
+ goto data_unlock;
+
+ ret = regmap_bulk_read(data->regmap, FXAS21002C_AXIS_TO_REG(index),
+ &axis_be, sizeof(axis_be));
+ if (ret < 0) {
+ dev_err(dev, "failed to read axis: %d: %d\n", index, ret);
+ goto data_unlock;
+ }
+
+ *val = sign_extend32(be16_to_cpu(axis_be), 15);
+
+ ret = fxas21002c_pm_put(data);
+ if (ret < 0)
+ goto data_unlock;
+
+ ret = IIO_VAL_INT;
+
+data_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_odr_get(struct fxas21002c_data *data, int *odr)
+{
+ unsigned int odr_bits;
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_field_read(data->regmap_fields[F_DR], &odr_bits);
+ if (ret < 0)
+ goto data_unlock;
+
+ *odr = fxas21002c_odr_hz_from_value(data, odr_bits);
+
+ ret = IIO_VAL_INT;
+
+data_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_odr_set(struct fxas21002c_data *data, int odr)
+{
+ int odr_bits;
+
+ odr_bits = fxas21002c_odr_value_from_hz(data, odr);
+ if (odr_bits < 0)
+ return odr_bits;
+
+ return fxas21002c_write(data, F_DR, odr_bits);
+}
+
+static int fxas21002c_lpf_get(struct fxas21002c_data *data, int *val2)
+{
+ unsigned int bw_bits;
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_field_read(data->regmap_fields[F_BW], &bw_bits);
+ if (ret < 0)
+ goto data_unlock;
+
+ *val2 = fxas21002c_lpf_bw_from_value(data, bw_bits) * 10000;
+
+ ret = IIO_VAL_INT_PLUS_MICRO;
+
+data_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_lpf_set(struct fxas21002c_data *data, int bw)
+{
+ int bw_bits;
+ int odr;
+ int ret;
+
+ bw_bits = fxas21002c_lpf_value_from_bw(data, bw);
+ if (bw_bits < 0)
+ return bw_bits;
+
+ /*
+ * From table 33 of the device spec, for ODR = 25Hz and 12.5 value 0.08
+ * is not allowed and for ODR = 12.5 value 0.16 is also not allowed
+ */
+ ret = fxas21002c_odr_get(data, &odr);
+ if (ret < 0)
+ return -EINVAL;
+
+ if ((odr == 25 && bw_bits > 0x01) || (odr == 12 && bw_bits > 0))
+ return -EINVAL;
+
+ return fxas21002c_write(data, F_BW, bw_bits);
+}
+
+static int fxas21002c_hpf_get(struct fxas21002c_data *data, int *val2)
+{
+ unsigned int sel_bits;
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_field_read(data->regmap_fields[F_SEL], &sel_bits);
+ if (ret < 0)
+ goto data_unlock;
+
+ *val2 = fxas21002c_hpf_sel_from_value(data, sel_bits);
+
+ ret = IIO_VAL_INT_PLUS_MICRO;
+
+data_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_hpf_set(struct fxas21002c_data *data, int sel)
+{
+ int sel_bits;
+
+ sel_bits = fxas21002c_hpf_value_from_sel(data, sel);
+ if (sel_bits < 0)
+ return sel_bits;
+
+ return fxas21002c_write(data, F_SEL, sel_bits);
+}
+
+static int fxas21002c_scale_get(struct fxas21002c_data *data, int *val)
+{
+ int fs_bits;
+ int scale;
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_field_read(data->regmap_fields[F_FS], &fs_bits);
+ if (ret < 0)
+ goto data_unlock;
+
+ scale = fxas21002c_range_fs_from_value(data, fs_bits);
+ if (scale < 0) {
+ ret = scale;
+ goto data_unlock;
+ }
+
+ *val = scale;
+
+data_unlock:
+ mutex_unlock(&data->lock);
+
+ return ret;
+}
+
+static int fxas21002c_scale_set(struct fxas21002c_data *data, int range)
+{
+ int fs_bits;
+
+ fs_bits = fxas21002c_range_value_from_fs(data, range);
+ if (fs_bits < 0)
+ return fs_bits;
+
+ return fxas21002c_write(data, F_FS, fs_bits);
+}
+
+static int fxas21002c_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val,
+ int *val2, long mask)
+{
+ struct fxas21002c_data *data = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ switch (chan->type) {
+ case IIO_TEMP:
+ return fxas21002c_temp_get(data, val);
+ case IIO_ANGL_VEL:
+ return fxas21002c_axis_get(data, chan->scan_index, val);
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_ANGL_VEL:
+ *val2 = FXAS21002C_SCALE_FRACTIONAL;
+ ret = fxas21002c_scale_get(data, val);
+ if (ret < 0)
+ return ret;
+
+ return IIO_VAL_FRACTIONAL;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ *val = 0;
+ return fxas21002c_lpf_get(data, val2);
+ case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+ *val = 0;
+ return fxas21002c_hpf_get(data, val2);
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ *val2 = 0;
+ return fxas21002c_odr_get(data, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int fxas21002c_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int val,
+ int val2, long mask)
+{
+ struct fxas21002c_data *data = iio_priv(indio_dev);
+ int range;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ if (val2)
+ return -EINVAL;
+
+ return fxas21002c_odr_set(data, val);
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ if (val)
+ return -EINVAL;
+
+ val2 = val2 / 10000;
+ return fxas21002c_lpf_set(data, val2);
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_ANGL_VEL:
+ range = (((val * 1000 + val2 / 1000) *
+ FXAS21002C_SCALE_FRACTIONAL) / 1000);
+ return fxas21002c_scale_set(data, range);
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+ return fxas21002c_hpf_set(data, val2);
+ default:
+ return -EINVAL;
+ }
+}
+
+static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("12.5 25 50 100 200 400 800");
+
+static IIO_CONST_ATTR(in_anglvel_filter_low_pass_3db_frequency_available,
+ "0.32 0.16 0.08");
+
+static IIO_CONST_ATTR(in_anglvel_filter_high_pass_3db_frequency_available,
+ "0.018750 0.009625 0.004875 0.002475");
+
+static IIO_CONST_ATTR(in_anglvel_scale_available,
+ "125.0 62.5 31.25 15.625 7.8125");
+
+static struct attribute *fxas21002c_attributes[] = {
+ &iio_const_attr_sampling_frequency_available.dev_attr.attr,
+ &iio_const_attr_in_anglvel_filter_low_pass_3db_frequency_available.dev_attr.attr,
+ &iio_const_attr_in_anglvel_filter_high_pass_3db_frequency_available.dev_attr.attr,
+ &iio_const_attr_in_anglvel_scale_available.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group fxas21002c_attrs_group = {
+ .attrs = fxas21002c_attributes,
+};
+
+#define FXAS21002C_CHANNEL(_axis) { \
+ .type = IIO_ANGL_VEL, \
+ .modified = 1, \
+ .channel2 = IIO_MOD_##_axis, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) | \
+ BIT(IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY) | \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .scan_index = CHANNEL_SCAN_INDEX_##_axis, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 16, \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+static const struct iio_chan_spec fxas21002c_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .scan_index = -1,
+ },
+ FXAS21002C_CHANNEL(X),
+ FXAS21002C_CHANNEL(Y),
+ FXAS21002C_CHANNEL(Z),
+};
+
+static const struct iio_info fxas21002c_info = {
+ .attrs = &fxas21002c_attrs_group,
+ .read_raw = &fxas21002c_read_raw,
+ .write_raw = &fxas21002c_write_raw,
+};
+
+static irqreturn_t fxas21002c_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct fxas21002c_data *data = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = regmap_bulk_read(data->regmap, FXAS21002C_REG_OUT_X_MSB,
+ data->buffer, CHANNEL_SCAN_MAX * sizeof(s16));
+ if (ret < 0)
+ goto out_unlock;
+
+ iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+ data->timestamp);
+
+out_unlock:
+ mutex_unlock(&data->lock);
+
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
+static int fxas21002c_chip_init(struct fxas21002c_data *data)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ unsigned int chip_id;
+ int ret;
+
+ ret = regmap_field_read(data->regmap_fields[F_WHO_AM_I], &chip_id);
+ if (ret < 0)
+ return ret;
+
+ if (chip_id != FXAS21002C_CHIP_ID_1 &&
+ chip_id != FXAS21002C_CHIP_ID_2) {
+ dev_err(dev, "chip id 0x%02x is not supported\n", chip_id);
+ return -EINVAL;
+ }
+
+ data->chip_id = chip_id;
+
+ ret = fxas21002c_mode_set(data, FXAS21002C_MODE_STANDBY);
+ if (ret < 0)
+ return ret;
+
+ /* Set ODR to 200HZ as default */
+ ret = fxas21002c_odr_set(data, 200);
+ if (ret < 0)
+ dev_err(dev, "failed to set ODR: %d\n", ret);
+
+ return ret;
+}
+
+static int fxas21002c_data_rdy_trigger_set_state(struct iio_trigger *trig,
+ bool state)
+{
+ struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+ struct fxas21002c_data *data = iio_priv(indio_dev);
+
+ return regmap_field_write(data->regmap_fields[F_INT_EN_DRDY], state);
+}
+
+static const struct iio_trigger_ops fxas21002c_trigger_ops = {
+ .set_trigger_state = &fxas21002c_data_rdy_trigger_set_state,
+};
+
+static irqreturn_t fxas21002c_data_rdy_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct fxas21002c_data *data = iio_priv(indio_dev);
+
+ data->timestamp = iio_get_time_ns(indio_dev);
+
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t fxas21002c_data_rdy_thread(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct fxas21002c_data *data = iio_priv(indio_dev);
+ unsigned int data_ready;
+ int ret;
+
+ ret = regmap_field_read(data->regmap_fields[F_SRC_DRDY], &data_ready);
+ if (ret < 0)
+ return IRQ_NONE;
+
+ if (!data_ready)
+ return IRQ_NONE;
+
+ iio_trigger_poll_chained(data->dready_trig);
+
+ return IRQ_HANDLED;
+}
+
+static int fxas21002c_trigger_probe(struct fxas21002c_data *data)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct device_node *np = indio_dev->dev.of_node;
+ unsigned long irq_trig;
+ bool irq_open_drain;
+ int irq1;
+ int ret;
+
+ if (!data->irq)
+ return 0;
+
+ irq1 = of_irq_get_byname(np, "INT1");
+
+ if (irq1 == data->irq) {
+ dev_info(dev, "using interrupt line INT1\n");
+ ret = regmap_field_write(data->regmap_fields[F_INT_CFG_DRDY],
+ 1);
+ if (ret < 0)
+ return ret;
+ }
+
+ dev_info(dev, "using interrupt line INT2\n");
+
+ irq_open_drain = of_property_read_bool(np, "drive-open-drain");
+
+ data->dready_trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
+ indio_dev->name,
+ indio_dev->id);
+ if (!data->dready_trig)
+ return -ENOMEM;
+
+ irq_trig = irqd_get_trigger_type(irq_get_irq_data(data->irq));
+
+ if (irq_trig == IRQF_TRIGGER_RISING) {
+ ret = regmap_field_write(data->regmap_fields[F_IPOL], 1);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (irq_open_drain)
+ irq_trig |= IRQF_SHARED;
+
+ ret = devm_request_threaded_irq(dev, data->irq,
+ fxas21002c_data_rdy_handler,
+ fxas21002c_data_rdy_thread,
+ irq_trig, "fxas21002c_data_ready",
+ indio_dev);
+ if (ret < 0)
+ return ret;
+
+ data->dready_trig->dev.parent = dev;
+ data->dready_trig->ops = &fxas21002c_trigger_ops;
+ iio_trigger_set_drvdata(data->dready_trig, indio_dev);
+
+ return devm_iio_trigger_register(dev, data->dready_trig);
+}
+
+static int fxas21002c_power_enable(struct fxas21002c_data *data)
+{
+ int ret;
+
+ ret = regulator_enable(data->vdd);
+ if (ret < 0)
+ return ret;
+
+ ret = regulator_enable(data->vddio);
+ if (ret < 0) {
+ regulator_disable(data->vdd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void fxas21002c_power_disable(struct fxas21002c_data *data)
+{
+ regulator_disable(data->vdd);
+ regulator_disable(data->vddio);
+}
+
+static void fxas21002c_power_disable_action(void *_data)
+{
+ struct fxas21002c_data *data = _data;
+
+ fxas21002c_power_disable(data);
+}
+
+static int fxas21002c_regulators_get(struct fxas21002c_data *data)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+
+ data->vdd = devm_regulator_get(dev->parent, "vdd");
+ if (IS_ERR(data->vdd))
+ return PTR_ERR(data->vdd);
+
+ data->vddio = devm_regulator_get(dev->parent, "vddio");
+
+ return PTR_ERR_OR_ZERO(data->vddio);
+}
+
+int fxas21002c_core_probe(struct device *dev, struct regmap *regmap, int irq,
+ const char *name)
+{
+ struct fxas21002c_data *data;
+ struct iio_dev *indio_dev;
+ struct regmap_field *f;
+ int i;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(indio_dev);
+ dev_set_drvdata(dev, indio_dev);
+ data->irq = irq;
+ data->regmap = regmap;
+
+ for (i = 0; i < F_MAX_FIELDS; i++) {
+ f = devm_regmap_field_alloc(dev, data->regmap,
+ fxas21002c_reg_fields[i]);
+ if (IS_ERR(f))
+ return PTR_ERR(f);
+
+ data->regmap_fields[i] = f;
+ }
+
+ mutex_init(&data->lock);
+
+ ret = fxas21002c_regulators_get(data);
+ if (ret < 0)
+ return ret;
+
+ ret = fxas21002c_power_enable(data);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_add_action_or_reset(dev, fxas21002c_power_disable_action,
+ data);
+ if (ret < 0)
+ return ret;
+
+ ret = fxas21002c_chip_init(data);
+ if (ret < 0)
+ return ret;
+
+ indio_dev->dev.parent = dev;
+ indio_dev->channels = fxas21002c_channels;
+ indio_dev->num_channels = ARRAY_SIZE(fxas21002c_channels);
+ indio_dev->name = name;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->info = &fxas21002c_info;
+
+ ret = fxas21002c_trigger_probe(data);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+ fxas21002c_trigger_handler, NULL);
+ if (ret < 0)
+ return ret;
+
+ ret = pm_runtime_set_active(dev);
+ if (ret)
+ return ret;
+
+ pm_runtime_enable(dev);
+ pm_runtime_set_autosuspend_delay(dev, 2000);
+ pm_runtime_use_autosuspend(dev);
+
+ ret = iio_device_register(indio_dev);
+ if (ret < 0)
+ goto pm_disable;
+
+ return 0;
+
+pm_disable:
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(fxas21002c_core_probe);
+
+void fxas21002c_core_remove(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+ iio_device_unregister(indio_dev);
+
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
+}
+EXPORT_SYMBOL_GPL(fxas21002c_core_remove);
+
+static int __maybe_unused fxas21002c_suspend(struct device *dev)
+{
+ struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
+
+ fxas21002c_mode_set(data, FXAS21002C_MODE_STANDBY);
+ fxas21002c_power_disable(data);
+
+ return 0;
+}
+
+static int __maybe_unused fxas21002c_resume(struct device *dev)
+{
+ struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
+ int ret;
+
+ ret = fxas21002c_power_enable(data);
+ if (ret < 0)
+ return ret;
+
+ return fxas21002c_mode_set(data, data->prev_mode);
+}
+
+static int __maybe_unused fxas21002c_runtime_suspend(struct device *dev)
+{
+ struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
+
+ return fxas21002c_mode_set(data, FXAS21002C_MODE_READY);
+}
+
+static int __maybe_unused fxas21002c_runtime_resume(struct device *dev)
+{
+ struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
+
+ return fxas21002c_mode_set(data, FXAS21002C_MODE_ACTIVE);
+}
+
+const struct dev_pm_ops fxas21002c_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(fxas21002c_suspend, fxas21002c_resume)
+ SET_RUNTIME_PM_OPS(fxas21002c_runtime_suspend,
+ fxas21002c_runtime_resume, NULL)
+};
+EXPORT_SYMBOL_GPL(fxas21002c_pm_ops);
+
+MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("FXAS21002C Gyro driver");
diff --git a/drivers/iio/gyro/fxas21002c_i2c.c b/drivers/iio/gyro/fxas21002c_i2c.c
new file mode 100644
index 000000000000..a7807fd97483
--- /dev/null
+++ b/drivers/iio/gyro/fxas21002c_i2c.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for NXP FXAS21002C Gyroscope - I2C
+ *
+ * Copyright (C) 2018 Linaro Ltd.
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "fxas21002c.h"
+
+static const struct regmap_config fxas21002c_regmap_i2c_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = FXAS21002C_REG_CTRL3,
+};
+
+static int fxas21002c_i2c_probe(struct i2c_client *i2c)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(i2c, &fxas21002c_regmap_i2c_conf);
+ if (IS_ERR(regmap)) {
+ dev_err(&i2c->dev, "Failed to register i2c regmap: %ld\n",
+ PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ return fxas21002c_core_probe(&i2c->dev, regmap, i2c->irq, i2c->name);
+}
+
+static int fxas21002c_i2c_remove(struct i2c_client *i2c)
+{
+ fxas21002c_core_remove(&i2c->dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id fxas21002c_i2c_id[] = {
+ { "fxas21002c", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, fxas21002c_i2c_id);
+
+static const struct of_device_id fxas21002c_i2c_of_match[] = {
+ { .compatible = "nxp,fxas21002c", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, fxas21002c_i2c_of_match);
+
+static struct i2c_driver fxas21002c_i2c_driver = {
+ .driver = {
+ .name = "fxas21002c_i2c",
+ .pm = &fxas21002c_pm_ops,
+ .of_match_table = fxas21002c_i2c_of_match,
+ },
+ .probe_new = fxas21002c_i2c_probe,
+ .remove = fxas21002c_i2c_remove,
+ .id_table = fxas21002c_i2c_id,
+};
+module_i2c_driver(fxas21002c_i2c_driver);
+
+MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("FXAS21002C I2C Gyro driver");
diff --git a/drivers/iio/gyro/fxas21002c_spi.c b/drivers/iio/gyro/fxas21002c_spi.c
new file mode 100644
index 000000000000..77ceebef4e34
--- /dev/null
+++ b/drivers/iio/gyro/fxas21002c_spi.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for NXP Fxas21002c Gyroscope - SPI
+ *
+ * Copyright (C) 2019 Linaro Ltd.
+ */
+
+#include <linux/err.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "fxas21002c.h"
+
+static const struct regmap_config fxas21002c_regmap_spi_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = FXAS21002C_REG_CTRL3,
+};
+
+static int fxas21002c_spi_probe(struct spi_device *spi)
+{
+ const struct spi_device_id *id = spi_get_device_id(spi);
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spi(spi, &fxas21002c_regmap_spi_conf);
+ if (IS_ERR(regmap)) {
+ dev_err(&spi->dev, "Failed to register spi regmap: %ld\n",
+ PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ return fxas21002c_core_probe(&spi->dev, regmap, spi->irq, id->name);
+}
+
+static int fxas21002c_spi_remove(struct spi_device *spi)
+{
+ fxas21002c_core_remove(&spi->dev);
+
+ return 0;
+}
+
+static const struct spi_device_id fxas21002c_spi_id[] = {
+ { "fxas21002c", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, fxas21002c_spi_id);
+
+static const struct of_device_id fxas21002c_spi_of_match[] = {
+ { .compatible = "nxp,fxas21002c", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, fxas21002c_spi_of_match);
+
+static struct spi_driver fxas21002c_spi_driver = {
+ .driver = {
+ .name = "fxas21002c_spi",
+ .pm = &fxas21002c_pm_ops,
+ .of_match_table = fxas21002c_spi_of_match,
+ },
+ .probe = fxas21002c_spi_probe,
+ .remove = fxas21002c_spi_remove,
+ .id_table = fxas21002c_spi_id,
+};
+module_spi_driver(fxas21002c_spi_driver);
+
+MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("FXAS21002C SPI Gyro driver");
diff --git a/drivers/iio/gyro/mpu3050-core.c b/drivers/iio/gyro/mpu3050-core.c
index 85b7ac49c8d9..0a406163d775 100644
--- a/drivers/iio/gyro/mpu3050-core.c
+++ b/drivers/iio/gyro/mpu3050-core.c
@@ -865,7 +865,7 @@ static int mpu3050_power_up(struct mpu3050 *mpu3050)
dev_err(mpu3050->dev, "error setting power mode\n");
return ret;
}
- msleep(10);
+ usleep_range(10000, 20000);
return 0;
}
diff --git a/drivers/iio/imu/st_lsm6dsx/Kconfig b/drivers/iio/imu/st_lsm6dsx/Kconfig
index 8dcf5137b8da..9e592973a8a6 100644
--- a/drivers/iio/imu/st_lsm6dsx/Kconfig
+++ b/drivers/iio/imu/st_lsm6dsx/Kconfig
@@ -9,7 +9,7 @@ config IIO_ST_LSM6DSX
help
Say yes here to build support for STMicroelectronics LSM6DSx imu
sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,
- ism330dlc, lsm6dso, lsm6dsox, asm330lhh
+ ism330dlc, lsm6dso, lsm6dsox, asm330lhh, lsm6dsr
To compile this driver as a module, choose M here: the module
will be called st_lsm6dsx.
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 0a0c56c1701d..004a8a1a0027 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -22,6 +22,7 @@
#define ST_LSM6DSO_DEV_NAME "lsm6dso"
#define ST_ASM330LHH_DEV_NAME "asm330lhh"
#define ST_LSM6DSOX_DEV_NAME "lsm6dsox"
+#define ST_LSM6DSR_DEV_NAME "lsm6dsr"
enum st_lsm6dsx_hw_id {
ST_LSM6DS3_ID,
@@ -32,6 +33,7 @@ enum st_lsm6dsx_hw_id {
ST_LSM6DSO_ID,
ST_ASM330LHH_ID,
ST_LSM6DSOX_ID,
+ ST_LSM6DSR_ID,
ST_LSM6DSX_MAX_ID,
};
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index 2da8c5ff699a..793598ee960a 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -13,9 +13,9 @@
* (e.g. Gx, Gy, Gz, Ax, Ay, Az), then data are repeated depending on the
* value of the decimation factor and ODR set for each FIFO data set.
*
- * LSM6DSO/LSM6DSOX/ASM330LHH: The FIFO buffer can be configured to store data
- * from gyroscope and accelerometer. Each sample is queued with a tag (1B)
- * indicating data source (gyroscope, accelerometer, hw timer).
+ * LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR: The FIFO buffer can be configured to
+ * store data from gyroscope and accelerometer. Each sample is queued with
+ * a tag (1B) indicating data source (gyroscope, accelerometer, hw timer).
*
* FIFO supported modes:
* - BYPASS: FIFO disabled
@@ -506,7 +506,7 @@ st_lsm6dsx_push_tagged_data(struct st_lsm6dsx_hw *hw, u8 tag,
}
/**
- * st_lsm6dsx_read_tagged_fifo() - LSM6DSO/LSM6DSOX/ASM330LHH read FIFO routine
+ * st_lsm6dsx_read_tagged_fifo() - tagged hw FIFO read routine
* @hw: Pointer to instance of struct st_lsm6dsx_hw.
*
* Read samples from the hw FIFO and push them to IIO buffers.
@@ -517,7 +517,6 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw)
{
u16 pattern_len = hw->sip * ST_LSM6DSX_TAGGED_SAMPLE_SIZE;
u16 fifo_len, fifo_diff_mask;
- struct st_lsm6dsx_sensor *acc_sensor, *gyro_sensor;
u8 iio_buff[ST_LSM6DSX_IIO_BUFF_SIZE], tag;
bool reset_ts = false;
int i, err, read_len;
@@ -539,9 +538,6 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw)
if (!fifo_len)
return 0;
- acc_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
- gyro_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_GYRO]);
-
for (read_len = 0; read_len < fifo_len; read_len += pattern_len) {
err = st_lsm6dsx_read_block(hw,
ST_LSM6DSX_REG_FIFO_OUT_TAG_ADDR,
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index c167ae2c21ab..cf82c9049945 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -23,7 +23,7 @@
* - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
* - FIFO size: 4KB
*
- * - LSM6DSO/LSM6DSOX/ASM330LHH
+ * - LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR
* - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416
* - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
* - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
@@ -62,37 +62,19 @@
#define ST_LSM6DSX_REG_INT2_ON_INT1_ADDR 0x13
#define ST_LSM6DSX_REG_INT2_ON_INT1_MASK BIT(5)
-#define ST_LSM6DSX_REG_ACC_ODR_ADDR 0x10
-#define ST_LSM6DSX_REG_ACC_ODR_MASK GENMASK(7, 4)
-#define ST_LSM6DSX_REG_ACC_FS_ADDR 0x10
-#define ST_LSM6DSX_REG_ACC_FS_MASK GENMASK(3, 2)
#define ST_LSM6DSX_REG_ACC_OUT_X_L_ADDR 0x28
#define ST_LSM6DSX_REG_ACC_OUT_Y_L_ADDR 0x2a
#define ST_LSM6DSX_REG_ACC_OUT_Z_L_ADDR 0x2c
-#define ST_LSM6DSX_REG_GYRO_ODR_ADDR 0x11
-#define ST_LSM6DSX_REG_GYRO_ODR_MASK GENMASK(7, 4)
-#define ST_LSM6DSX_REG_GYRO_FS_ADDR 0x11
-#define ST_LSM6DSX_REG_GYRO_FS_MASK GENMASK(3, 2)
#define ST_LSM6DSX_REG_GYRO_OUT_X_L_ADDR 0x22
#define ST_LSM6DSX_REG_GYRO_OUT_Y_L_ADDR 0x24
#define ST_LSM6DSX_REG_GYRO_OUT_Z_L_ADDR 0x26
-#define ST_LSM6DSX_ACC_FS_2G_GAIN IIO_G_TO_M_S_2(61)
-#define ST_LSM6DSX_ACC_FS_4G_GAIN IIO_G_TO_M_S_2(122)
-#define ST_LSM6DSX_ACC_FS_8G_GAIN IIO_G_TO_M_S_2(244)
-#define ST_LSM6DSX_ACC_FS_16G_GAIN IIO_G_TO_M_S_2(488)
-
-#define ST_LSM6DSX_GYRO_FS_245_GAIN IIO_DEGREE_TO_RAD(8750)
-#define ST_LSM6DSX_GYRO_FS_500_GAIN IIO_DEGREE_TO_RAD(17500)
-#define ST_LSM6DSX_GYRO_FS_1000_GAIN IIO_DEGREE_TO_RAD(35000)
-#define ST_LSM6DSX_GYRO_FS_2000_GAIN IIO_DEGREE_TO_RAD(70000)
-
static const struct st_lsm6dsx_odr_table_entry st_lsm6dsx_odr_table[] = {
[ST_LSM6DSX_ID_ACC] = {
.reg = {
- .addr = ST_LSM6DSX_REG_ACC_ODR_ADDR,
- .mask = ST_LSM6DSX_REG_ACC_ODR_MASK,
+ .addr = 0x10,
+ .mask = GENMASK(7, 4),
},
.odr_avl[0] = { 13, 0x01 },
.odr_avl[1] = { 26, 0x02 },
@@ -103,8 +85,8 @@ static const struct st_lsm6dsx_odr_table_entry st_lsm6dsx_odr_table[] = {
},
[ST_LSM6DSX_ID_GYRO] = {
.reg = {
- .addr = ST_LSM6DSX_REG_GYRO_ODR_ADDR,
- .mask = ST_LSM6DSX_REG_GYRO_ODR_MASK,
+ .addr = 0x11,
+ .mask = GENMASK(7, 4),
},
.odr_avl[0] = { 13, 0x01 },
.odr_avl[1] = { 26, 0x02 },
@@ -118,23 +100,23 @@ static const struct st_lsm6dsx_odr_table_entry st_lsm6dsx_odr_table[] = {
static const struct st_lsm6dsx_fs_table_entry st_lsm6dsx_fs_table[] = {
[ST_LSM6DSX_ID_ACC] = {
.reg = {
- .addr = ST_LSM6DSX_REG_ACC_FS_ADDR,
- .mask = ST_LSM6DSX_REG_ACC_FS_MASK,
+ .addr = 0x10,
+ .mask = GENMASK(3, 2),
},
- .fs_avl[0] = { ST_LSM6DSX_ACC_FS_2G_GAIN, 0x0 },
- .fs_avl[1] = { ST_LSM6DSX_ACC_FS_4G_GAIN, 0x2 },
- .fs_avl[2] = { ST_LSM6DSX_ACC_FS_8G_GAIN, 0x3 },
- .fs_avl[3] = { ST_LSM6DSX_ACC_FS_16G_GAIN, 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
},
[ST_LSM6DSX_ID_GYRO] = {
.reg = {
- .addr = ST_LSM6DSX_REG_GYRO_FS_ADDR,
- .mask = ST_LSM6DSX_REG_GYRO_FS_MASK,
+ .addr = 0x11,
+ .mask = GENMASK(3, 2),
},
- .fs_avl[0] = { ST_LSM6DSX_GYRO_FS_245_GAIN, 0x0 },
- .fs_avl[1] = { ST_LSM6DSX_GYRO_FS_500_GAIN, 0x1 },
- .fs_avl[2] = { ST_LSM6DSX_GYRO_FS_1000_GAIN, 0x2 },
- .fs_avl[3] = { ST_LSM6DSX_GYRO_FS_2000_GAIN, 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
}
};
@@ -387,6 +369,71 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
},
},
},
+ {
+ .wai = 0x6b,
+ .max_fifo_size = 512,
+ .id = {
+ [0] = ST_LSM6DSR_ID,
+ },
+ .batch = {
+ [ST_LSM6DSX_ID_ACC] = {
+ .addr = 0x09,
+ .mask = GENMASK(3, 0),
+ },
+ [ST_LSM6DSX_ID_GYRO] = {
+ .addr = 0x09,
+ .mask = GENMASK(7, 4),
+ },
+ },
+ .fifo_ops = {
+ .read_fifo = st_lsm6dsx_read_tagged_fifo,
+ .fifo_th = {
+ .addr = 0x07,
+ .mask = GENMASK(8, 0),
+ },
+ .fifo_diff = {
+ .addr = 0x3a,
+ .mask = GENMASK(8, 0),
+ },
+ .th_wl = 1,
+ },
+ .ts_settings = {
+ .timer_en = {
+ .addr = 0x19,
+ .mask = BIT(5),
+ },
+ .decimator = {
+ .addr = 0x0a,
+ .mask = GENMASK(7, 6),
+ },
+ },
+ .shub_settings = {
+ .page_mux = {
+ .addr = 0x01,
+ .mask = BIT(6),
+ },
+ .master_en = {
+ .addr = 0x14,
+ .mask = BIT(2),
+ },
+ .pullup_en = {
+ .addr = 0x14,
+ .mask = BIT(3),
+ },
+ .aux_sens = {
+ .addr = 0x14,
+ .mask = GENMASK(1, 0),
+ },
+ .wr_once = {
+ .addr = 0x14,
+ .mask = BIT(6),
+ },
+ .shub_out = 0x02,
+ .slv0_addr = 0x15,
+ .dw_slv0_addr = 0x21,
+ .batch_en = BIT(3),
+ }
+ },
};
static const struct iio_chan_spec st_lsm6dsx_acc_channels[] = {
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
index 0bfc66d2d772..f54370196098 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
@@ -73,6 +73,10 @@ static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
.compatible = "st,lsm6dsox",
.data = (void *)ST_LSM6DSOX_ID,
},
+ {
+ .compatible = "st,lsm6dsr",
+ .data = (void *)ST_LSM6DSR_ID,
+ },
{},
};
MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
@@ -86,6 +90,7 @@ static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = {
{ ST_LSM6DSO_DEV_NAME, ST_LSM6DSO_ID },
{ ST_ASM330LHH_DEV_NAME, ST_ASM330LHH_ID },
{ ST_LSM6DSOX_DEV_NAME, ST_LSM6DSOX_ID },
+ { ST_LSM6DSR_DEV_NAME, ST_LSM6DSR_ID },
{},
};
MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
index 9f46d4ce9fc1..4a4abb2935da 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
@@ -73,6 +73,10 @@ static const struct of_device_id st_lsm6dsx_spi_of_match[] = {
.compatible = "st,lsm6dsox",
.data = (void *)ST_LSM6DSOX_ID,
},
+ {
+ .compatible = "st,lsm6dsr",
+ .data = (void *)ST_LSM6DSR_ID,
+ },
{},
};
MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
@@ -86,6 +90,7 @@ static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
{ ST_LSM6DSO_DEV_NAME, ST_LSM6DSO_ID },
{ ST_ASM330LHH_DEV_NAME, ST_ASM330LHH_ID },
{ ST_LSM6DSOX_DEV_NAME, ST_LSM6DSOX_ID },
+ { ST_LSM6DSR_DEV_NAME, ST_LSM6DSR_ID },
{},
};
MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig
index 12a3d3d40a91..e9f254ae3892 100644
--- a/drivers/iio/proximity/Kconfig
+++ b/drivers/iio/proximity/Kconfig
@@ -68,12 +68,19 @@ config RFD77402
module will be called rfd77402.
config SRF04
- tristate "Devantech SRF04 ultrasonic ranger sensor"
+ tristate "GPIO bitbanged ultrasonic ranger sensor (SRF04, MB1000)"
depends on GPIOLIB
help
- Say Y here to build a driver for Devantech SRF04 ultrasonic
+ Say Y here to build a driver for GPIO bitbanged ultrasonic
ranger sensor. This driver can be used to measure the distance
of objects. It is using two GPIOs.
+ Actually Supported types are:
+ - Devantech SRF04
+ - Maxbotix mb1000
+ - Maxbotix mb1010
+ - Maxbotix mb1020
+ - Maxbotix mb1030
+ - Maxbotix mb1040
To compile this driver as a module, choose M here: the
module will be called srf04.
diff --git a/drivers/iio/proximity/srf04.c b/drivers/iio/proximity/srf04.c
index 09c7b9c095b0..1bad4018d1aa 100644
--- a/drivers/iio/proximity/srf04.c
+++ b/drivers/iio/proximity/srf04.c
@@ -23,7 +23,7 @@
* trig: --+ +------------------------------------------------------
* ^ ^
* |<->|
- * udelay(10)
+ * udelay(trigger_pulse_us)
*
* ultra +-+ +-+ +-+
* sonic | | | | | |
@@ -48,6 +48,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/sched.h>
@@ -56,6 +57,10 @@
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
+struct srf04_cfg {
+ unsigned long trigger_pulse_us;
+};
+
struct srf04_data {
struct device *dev;
struct gpio_desc *gpiod_trig;
@@ -66,6 +71,15 @@ struct srf04_data {
ktime_t ts_falling;
struct completion rising;
struct completion falling;
+ const struct srf04_cfg *cfg;
+};
+
+static const struct srf04_cfg srf04_cfg = {
+ .trigger_pulse_us = 10,
+};
+
+static const struct srf04_cfg mb_lv_cfg = {
+ .trigger_pulse_us = 20,
};
static irqreturn_t srf04_handle_irq(int irq, void *dev_id)
@@ -102,7 +116,7 @@ static int srf04_read(struct srf04_data *data)
reinit_completion(&data->falling);
gpiod_set_value(data->gpiod_trig, 1);
- udelay(10);
+ udelay(data->cfg->trigger_pulse_us);
gpiod_set_value(data->gpiod_trig, 0);
/* it cannot take more than 20 ms */
@@ -215,6 +229,18 @@ static const struct iio_chan_spec srf04_chan_spec[] = {
},
};
+static const struct of_device_id of_srf04_match[] = {
+ { .compatible = "devantech,srf04", .data = &srf04_cfg},
+ { .compatible = "maxbotix,mb1000", .data = &mb_lv_cfg},
+ { .compatible = "maxbotix,mb1010", .data = &mb_lv_cfg},
+ { .compatible = "maxbotix,mb1020", .data = &mb_lv_cfg},
+ { .compatible = "maxbotix,mb1030", .data = &mb_lv_cfg},
+ { .compatible = "maxbotix,mb1040", .data = &mb_lv_cfg},
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, of_srf04_match);
+
static int srf04_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -230,6 +256,7 @@ static int srf04_probe(struct platform_device *pdev)
data = iio_priv(indio_dev);
data->dev = dev;
+ data->cfg = of_match_device(of_srf04_match, dev)->data;
mutex_init(&data->lock);
init_completion(&data->rising);
@@ -280,13 +307,6 @@ static int srf04_probe(struct platform_device *pdev)
return devm_iio_device_register(dev, indio_dev);
}
-static const struct of_device_id of_srf04_match[] = {
- { .compatible = "devantech,srf04", },
- {},
-};
-
-MODULE_DEVICE_TABLE(of, of_srf04_match);
-
static struct platform_driver srf04_driver = {
.probe = srf04_probe,
.driver = {
diff --git a/drivers/iio/temperature/max31856.c b/drivers/iio/temperature/max31856.c
index 6b67d6b95cf9..f184ba5601d9 100644
--- a/drivers/iio/temperature/max31856.c
+++ b/drivers/iio/temperature/max31856.c
@@ -210,6 +210,9 @@ static int max31856_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT_PLUS_MICRO;
}
break;
+ default:
+ ret = -EINVAL;
+ break;
}
return ret;