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-rw-r--r--drivers/iio/humidity/Kconfig3
-rw-r--r--drivers/iio/humidity/hdc100x.c22
-rw-r--r--drivers/iio/humidity/hts221.h11
-rw-r--r--drivers/iio/humidity/hts221_buffer.c43
-rw-r--r--drivers/iio/humidity/hts221_core.c144
-rw-r--r--drivers/iio/humidity/htu21.c8
6 files changed, 125 insertions, 106 deletions
diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig
index 14b9ce453d9d..2c0fc9a400b8 100644
--- a/drivers/iio/humidity/Kconfig
+++ b/drivers/iio/humidity/Kconfig
@@ -31,7 +31,8 @@ config HDC100X
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for the Texas Instruments
- HDC1000 and HDC1008 relative humidity and temperature sensors.
+ HDC1000, HDC1008, HDC1010, HDC1050, and HDC1080 relative
+ humidity and temperature sensors.
To compile this driver as a module, choose M here: the module
will be called hdc100x.
diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c
index aa17115f54c9..7851bd90ef64 100644
--- a/drivers/iio/humidity/hdc100x.c
+++ b/drivers/iio/humidity/hdc100x.c
@@ -13,6 +13,12 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
+ * Datasheets:
+ * http://www.ti.com/product/HDC1000/datasheet
+ * http://www.ti.com/product/HDC1008/datasheet
+ * http://www.ti.com/product/HDC1010/datasheet
+ * http://www.ti.com/product/HDC1050/datasheet
+ * http://www.ti.com/product/HDC1080/datasheet
*/
#include <linux/delay.h>
@@ -414,13 +420,29 @@ static int hdc100x_remove(struct i2c_client *client)
static const struct i2c_device_id hdc100x_id[] = {
{ "hdc100x", 0 },
+ { "hdc1000", 0 },
+ { "hdc1008", 0 },
+ { "hdc1010", 0 },
+ { "hdc1050", 0 },
+ { "hdc1080", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, hdc100x_id);
+static const struct of_device_id hdc100x_dt_ids[] = {
+ { .compatible = "ti,hdc1000" },
+ { .compatible = "ti,hdc1008" },
+ { .compatible = "ti,hdc1010" },
+ { .compatible = "ti,hdc1050" },
+ { .compatible = "ti,hdc1080" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, hdc100x_dt_ids);
+
static struct i2c_driver hdc100x_driver = {
.driver = {
.name = "hdc100x",
+ .of_match_table = of_match_ptr(hdc100x_dt_ids),
},
.probe = hdc100x_probe,
.remove = hdc100x_remove,
diff --git a/drivers/iio/humidity/hts221.h b/drivers/iio/humidity/hts221.h
index 94510266e0a5..51d021966222 100644
--- a/drivers/iio/humidity/hts221.h
+++ b/drivers/iio/humidity/hts221.h
@@ -30,12 +30,6 @@ struct hts221_transfer_function {
int (*write)(struct device *dev, u8 addr, int len, u8 *data);
};
-#define HTS221_AVG_DEPTH 8
-struct hts221_avg_avl {
- u16 avg;
- u8 val;
-};
-
enum hts221_sensor_type {
HTS221_SENSOR_H,
HTS221_SENSOR_T,
@@ -66,10 +60,9 @@ struct hts221_hw {
extern const struct dev_pm_ops hts221_pm_ops;
-int hts221_config_drdy(struct hts221_hw *hw, bool enable);
+int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask, u8 val);
int hts221_probe(struct iio_dev *iio_dev);
-int hts221_power_on(struct hts221_hw *hw);
-int hts221_power_off(struct hts221_hw *hw);
+int hts221_set_enable(struct hts221_hw *hw, bool enable);
int hts221_allocate_buffers(struct hts221_hw *hw);
int hts221_allocate_trigger(struct hts221_hw *hw);
diff --git a/drivers/iio/humidity/hts221_buffer.c b/drivers/iio/humidity/hts221_buffer.c
index 7d19a3da7ab7..9690dfe9a844 100644
--- a/drivers/iio/humidity/hts221_buffer.c
+++ b/drivers/iio/humidity/hts221_buffer.c
@@ -20,8 +20,16 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/buffer.h>
+#include <linux/platform_data/st_sensors_pdata.h>
+
#include "hts221.h"
+#define HTS221_REG_DRDY_HL_ADDR 0x22
+#define HTS221_REG_DRDY_HL_MASK BIT(7)
+#define HTS221_REG_DRDY_PP_OD_ADDR 0x22
+#define HTS221_REG_DRDY_PP_OD_MASK BIT(6)
+#define HTS221_REG_DRDY_EN_ADDR 0x22
+#define HTS221_REG_DRDY_EN_MASK BIT(2)
#define HTS221_REG_STATUS_ADDR 0x27
#define HTS221_RH_DRDY_MASK BIT(1)
#define HTS221_TEMP_DRDY_MASK BIT(0)
@@ -30,8 +38,12 @@ static int hts221_trig_set_state(struct iio_trigger *trig, bool state)
{
struct iio_dev *iio_dev = iio_trigger_get_drvdata(trig);
struct hts221_hw *hw = iio_priv(iio_dev);
+ int err;
+
+ err = hts221_write_with_mask(hw, HTS221_REG_DRDY_EN_ADDR,
+ HTS221_REG_DRDY_EN_MASK, state);
- return hts221_config_drdy(hw, state);
+ return err < 0 ? err : 0;
}
static const struct iio_trigger_ops hts221_trigger_ops = {
@@ -67,6 +79,9 @@ static irqreturn_t hts221_trigger_handler_thread(int irq, void *private)
int hts221_allocate_trigger(struct hts221_hw *hw)
{
struct iio_dev *iio_dev = iio_priv_to_dev(hw);
+ bool irq_active_low = false, open_drain = false;
+ struct device_node *np = hw->dev->of_node;
+ struct st_sensors_platform_data *pdata;
unsigned long irq_type;
int err;
@@ -76,6 +91,10 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
case IRQF_TRIGGER_HIGH:
case IRQF_TRIGGER_RISING:
break;
+ case IRQF_TRIGGER_LOW:
+ case IRQF_TRIGGER_FALLING:
+ irq_active_low = true;
+ break;
default:
dev_info(hw->dev,
"mode %lx unsupported, using IRQF_TRIGGER_RISING\n",
@@ -84,6 +103,24 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
break;
}
+ err = hts221_write_with_mask(hw, HTS221_REG_DRDY_HL_ADDR,
+ HTS221_REG_DRDY_HL_MASK, irq_active_low);
+ if (err < 0)
+ return err;
+
+ pdata = (struct st_sensors_platform_data *)hw->dev->platform_data;
+ if ((np && of_property_read_bool(np, "drive-open-drain")) ||
+ (pdata && pdata->open_drain)) {
+ irq_type |= IRQF_SHARED;
+ open_drain = true;
+ }
+
+ err = hts221_write_with_mask(hw, HTS221_REG_DRDY_PP_OD_ADDR,
+ HTS221_REG_DRDY_PP_OD_MASK,
+ open_drain);
+ if (err < 0)
+ return err;
+
err = devm_request_threaded_irq(hw->dev, hw->irq, NULL,
hts221_trigger_handler_thread,
irq_type | IRQF_ONESHOT,
@@ -109,12 +146,12 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
static int hts221_buffer_preenable(struct iio_dev *iio_dev)
{
- return hts221_power_on(iio_priv(iio_dev));
+ return hts221_set_enable(iio_priv(iio_dev), true);
}
static int hts221_buffer_postdisable(struct iio_dev *iio_dev)
{
- return hts221_power_off(iio_priv(iio_dev));
+ return hts221_set_enable(iio_priv(iio_dev), false);
}
static const struct iio_buffer_setup_ops hts221_buffer_ops = {
diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c
index a56da3999e00..32524a8dc66f 100644
--- a/drivers/iio/humidity/hts221_core.c
+++ b/drivers/iio/humidity/hts221_core.c
@@ -23,7 +23,6 @@
#define HTS221_REG_CNTRL1_ADDR 0x20
#define HTS221_REG_CNTRL2_ADDR 0x21
-#define HTS221_REG_CNTRL3_ADDR 0x22
#define HTS221_REG_AVG_ADDR 0x10
#define HTS221_REG_H_OUT_L 0x28
@@ -32,30 +31,9 @@
#define HTS221_HUMIDITY_AVG_MASK 0x07
#define HTS221_TEMP_AVG_MASK 0x38
-#define HTS221_ODR_MASK 0x87
+#define HTS221_ODR_MASK 0x03
#define HTS221_BDU_MASK BIT(2)
-
-#define HTS221_DRDY_MASK BIT(2)
-
-#define HTS221_ENABLE_SENSOR BIT(7)
-
-#define HTS221_HUMIDITY_AVG_4 0x00 /* 0.4 %RH */
-#define HTS221_HUMIDITY_AVG_8 0x01 /* 0.3 %RH */
-#define HTS221_HUMIDITY_AVG_16 0x02 /* 0.2 %RH */
-#define HTS221_HUMIDITY_AVG_32 0x03 /* 0.15 %RH */
-#define HTS221_HUMIDITY_AVG_64 0x04 /* 0.1 %RH */
-#define HTS221_HUMIDITY_AVG_128 0x05 /* 0.07 %RH */
-#define HTS221_HUMIDITY_AVG_256 0x06 /* 0.05 %RH */
-#define HTS221_HUMIDITY_AVG_512 0x07 /* 0.03 %RH */
-
-#define HTS221_TEMP_AVG_2 0x00 /* 0.08 degC */
-#define HTS221_TEMP_AVG_4 0x08 /* 0.05 degC */
-#define HTS221_TEMP_AVG_8 0x10 /* 0.04 degC */
-#define HTS221_TEMP_AVG_16 0x18 /* 0.03 degC */
-#define HTS221_TEMP_AVG_32 0x20 /* 0.02 degC */
-#define HTS221_TEMP_AVG_64 0x28 /* 0.015 degC */
-#define HTS221_TEMP_AVG_128 0x30 /* 0.01 degC */
-#define HTS221_TEMP_AVG_256 0x38 /* 0.007 degC */
+#define HTS221_ENABLE_MASK BIT(7)
/* calibration registers */
#define HTS221_REG_0RH_CAL_X_H 0x36
@@ -73,10 +51,11 @@ struct hts221_odr {
u8 val;
};
+#define HTS221_AVG_DEPTH 8
struct hts221_avg {
u8 addr;
u8 mask;
- struct hts221_avg_avl avg_avl[HTS221_AVG_DEPTH];
+ u16 avg_avl[HTS221_AVG_DEPTH];
};
static const struct hts221_odr hts221_odr_table[] = {
@@ -90,28 +69,28 @@ static const struct hts221_avg hts221_avg_list[] = {
.addr = HTS221_REG_AVG_ADDR,
.mask = HTS221_HUMIDITY_AVG_MASK,
.avg_avl = {
- { 4, HTS221_HUMIDITY_AVG_4 },
- { 8, HTS221_HUMIDITY_AVG_8 },
- { 16, HTS221_HUMIDITY_AVG_16 },
- { 32, HTS221_HUMIDITY_AVG_32 },
- { 64, HTS221_HUMIDITY_AVG_64 },
- { 128, HTS221_HUMIDITY_AVG_128 },
- { 256, HTS221_HUMIDITY_AVG_256 },
- { 512, HTS221_HUMIDITY_AVG_512 },
+ 4, /* 0.4 %RH */
+ 8, /* 0.3 %RH */
+ 16, /* 0.2 %RH */
+ 32, /* 0.15 %RH */
+ 64, /* 0.1 %RH */
+ 128, /* 0.07 %RH */
+ 256, /* 0.05 %RH */
+ 512, /* 0.03 %RH */
},
},
{
.addr = HTS221_REG_AVG_ADDR,
.mask = HTS221_TEMP_AVG_MASK,
.avg_avl = {
- { 2, HTS221_TEMP_AVG_2 },
- { 4, HTS221_TEMP_AVG_4 },
- { 8, HTS221_TEMP_AVG_8 },
- { 16, HTS221_TEMP_AVG_16 },
- { 32, HTS221_TEMP_AVG_32 },
- { 64, HTS221_TEMP_AVG_64 },
- { 128, HTS221_TEMP_AVG_128 },
- { 256, HTS221_TEMP_AVG_256 },
+ 2, /* 0.08 degC */
+ 4, /* 0.05 degC */
+ 8, /* 0.04 degC */
+ 16, /* 0.03 degC */
+ 32, /* 0.02 degC */
+ 64, /* 0.015 degC */
+ 128, /* 0.01 degC */
+ 256, /* 0.007 degC */
},
},
};
@@ -152,8 +131,7 @@ static const struct iio_chan_spec hts221_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(2),
};
-static int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask,
- u8 val)
+int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask, u8 val)
{
u8 data;
int err;
@@ -166,7 +144,7 @@ static int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask,
goto unlock;
}
- data = (data & ~mask) | (val & mask);
+ data = (data & ~mask) | ((val << __ffs(mask)) & mask);
err = hw->tf->write(hw->dev, addr, sizeof(data), &data);
if (err < 0)
@@ -199,21 +177,9 @@ static int hts221_check_whoami(struct hts221_hw *hw)
return 0;
}
-int hts221_config_drdy(struct hts221_hw *hw, bool enable)
-{
- u8 val = enable ? BIT(2) : 0;
- int err;
-
- err = hts221_write_with_mask(hw, HTS221_REG_CNTRL3_ADDR,
- HTS221_DRDY_MASK, val);
-
- return err < 0 ? err : 0;
-}
-
static int hts221_update_odr(struct hts221_hw *hw, u8 odr)
{
int i, err;
- u8 val;
for (i = 0; i < ARRAY_SIZE(hts221_odr_table); i++)
if (hts221_odr_table[i].hz == odr)
@@ -222,9 +188,8 @@ static int hts221_update_odr(struct hts221_hw *hw, u8 odr)
if (i == ARRAY_SIZE(hts221_odr_table))
return -EINVAL;
- val = HTS221_ENABLE_SENSOR | HTS221_BDU_MASK | hts221_odr_table[i].val;
err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_ODR_MASK, val);
+ HTS221_ODR_MASK, hts221_odr_table[i].val);
if (err < 0)
return err;
@@ -241,14 +206,13 @@ static int hts221_update_avg(struct hts221_hw *hw,
const struct hts221_avg *avg = &hts221_avg_list[type];
for (i = 0; i < HTS221_AVG_DEPTH; i++)
- if (avg->avg_avl[i].avg == val)
+ if (avg->avg_avl[i] == val)
break;
if (i == HTS221_AVG_DEPTH)
return -EINVAL;
- err = hts221_write_with_mask(hw, avg->addr, avg->mask,
- avg->avg_avl[i].val);
+ err = hts221_write_with_mask(hw, avg->addr, avg->mask, i);
if (err < 0)
return err;
@@ -283,7 +247,7 @@ hts221_sysfs_rh_oversampling_avail(struct device *dev,
for (i = 0; i < ARRAY_SIZE(avg->avg_avl); i++)
len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
- avg->avg_avl[i].avg);
+ avg->avg_avl[i]);
buf[len - 1] = '\n';
return len;
@@ -300,36 +264,22 @@ hts221_sysfs_temp_oversampling_avail(struct device *dev,
for (i = 0; i < ARRAY_SIZE(avg->avg_avl); i++)
len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
- avg->avg_avl[i].avg);
+ avg->avg_avl[i]);
buf[len - 1] = '\n';
return len;
}
-int hts221_power_on(struct hts221_hw *hw)
-{
- int err;
-
- err = hts221_update_odr(hw, hw->odr);
- if (err < 0)
- return err;
-
- hw->enabled = true;
-
- return 0;
-}
-
-int hts221_power_off(struct hts221_hw *hw)
+int hts221_set_enable(struct hts221_hw *hw, bool enable)
{
- __le16 data = 0;
int err;
- err = hw->tf->write(hw->dev, HTS221_REG_CNTRL1_ADDR, sizeof(data),
- (u8 *)&data);
+ err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ENABLE_MASK, enable);
if (err < 0)
return err;
- hw->enabled = false;
+ hw->enabled = enable;
return 0;
}
@@ -484,7 +434,7 @@ static int hts221_read_oneshot(struct hts221_hw *hw, u8 addr, int *val)
u8 data[HTS221_DATA_SIZE];
int err;
- err = hts221_power_on(hw);
+ err = hts221_set_enable(hw, true);
if (err < 0)
return err;
@@ -494,7 +444,7 @@ static int hts221_read_oneshot(struct hts221_hw *hw, u8 addr, int *val)
if (err < 0)
return err;
- hts221_power_off(hw);
+ hts221_set_enable(hw, false);
*val = (s16)get_unaligned_le16(data);
@@ -534,13 +484,13 @@ static int hts221_read_raw(struct iio_dev *iio_dev,
case IIO_HUMIDITYRELATIVE:
avg = &hts221_avg_list[HTS221_SENSOR_H];
idx = hw->sensors[HTS221_SENSOR_H].cur_avg_idx;
- *val = avg->avg_avl[idx].avg;
+ *val = avg->avg_avl[idx];
ret = IIO_VAL_INT;
break;
case IIO_TEMP:
avg = &hts221_avg_list[HTS221_SENSOR_T];
idx = hw->sensors[HTS221_SENSOR_T].cur_avg_idx;
- *val = avg->avg_avl[idx].avg;
+ *val = avg->avg_avl[idx];
ret = IIO_VAL_INT;
break;
default:
@@ -644,8 +594,6 @@ int hts221_probe(struct iio_dev *iio_dev)
if (err < 0)
return err;
- hw->odr = hts221_odr_table[0].hz;
-
iio_dev->modes = INDIO_DIRECT_MODE;
iio_dev->dev.parent = hw->dev;
iio_dev->available_scan_masks = hts221_scan_masks;
@@ -654,6 +602,16 @@ int hts221_probe(struct iio_dev *iio_dev)
iio_dev->name = HTS221_DEV_NAME;
iio_dev->info = &hts221_info;
+ /* enable Block Data Update */
+ err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
+ HTS221_BDU_MASK, 1);
+ if (err < 0)
+ return err;
+
+ err = hts221_update_odr(hw, hts221_odr_table[0].hz);
+ if (err < 0)
+ return err;
+
/* configure humidity sensor */
err = hts221_parse_rh_caldata(hw);
if (err < 0) {
@@ -661,7 +619,7 @@ int hts221_probe(struct iio_dev *iio_dev)
return err;
}
- data = hts221_avg_list[HTS221_SENSOR_H].avg_avl[3].avg;
+ data = hts221_avg_list[HTS221_SENSOR_H].avg_avl[3];
err = hts221_update_avg(hw, HTS221_SENSOR_H, data);
if (err < 0) {
dev_err(hw->dev, "failed to set rh oversampling ratio\n");
@@ -676,7 +634,7 @@ int hts221_probe(struct iio_dev *iio_dev)
return err;
}
- data = hts221_avg_list[HTS221_SENSOR_T].avg_avl[3].avg;
+ data = hts221_avg_list[HTS221_SENSOR_T].avg_avl[3];
err = hts221_update_avg(hw, HTS221_SENSOR_T, data);
if (err < 0) {
dev_err(hw->dev,
@@ -702,11 +660,10 @@ static int __maybe_unused hts221_suspend(struct device *dev)
{
struct iio_dev *iio_dev = dev_get_drvdata(dev);
struct hts221_hw *hw = iio_priv(iio_dev);
- __le16 data = 0;
int err;
- err = hw->tf->write(hw->dev, HTS221_REG_CNTRL1_ADDR, sizeof(data),
- (u8 *)&data);
+ err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ENABLE_MASK, false);
return err < 0 ? err : 0;
}
@@ -718,7 +675,8 @@ static int __maybe_unused hts221_resume(struct device *dev)
int err = 0;
if (hw->enabled)
- err = hts221_update_odr(hw, hw->odr);
+ err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ENABLE_MASK, true);
return err;
}
diff --git a/drivers/iio/humidity/htu21.c b/drivers/iio/humidity/htu21.c
index 0fbbd8c40894..2c4b9be85a05 100644
--- a/drivers/iio/humidity/htu21.c
+++ b/drivers/iio/humidity/htu21.c
@@ -238,11 +238,19 @@ static const struct i2c_device_id htu21_id[] = {
};
MODULE_DEVICE_TABLE(i2c, htu21_id);
+static const struct of_device_id htu21_of_match[] = {
+ { .compatible = "meas,htu21", },
+ { .compatible = "meas,ms8607-humidity", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, htu21_of_match);
+
static struct i2c_driver htu21_driver = {
.probe = htu21_probe,
.id_table = htu21_id,
.driver = {
.name = "htu21",
+ .of_match_table = of_match_ptr(htu21_of_match),
},
};
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-11 01:41:04 +0200