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-rw-r--r--drivers/iio/Kconfig2
-rw-r--r--drivers/iio/Makefile2
-rw-r--r--drivers/iio/accel/bma180.c7
-rw-r--r--drivers/iio/accel/hid-sensor-accel-3d.c12
-rw-r--r--drivers/iio/adc/ad7266.c21
-rw-r--r--drivers/iio/adc/max1363.c8
-rw-r--r--drivers/iio/adc/mcp3422.c9
-rw-r--r--drivers/iio/adc/ti_am335x_adc.c68
-rw-r--r--drivers/iio/adc/twl6030-gpadc.c2
-rw-r--r--drivers/iio/adc/viperboard_adc.c20
-rw-r--r--drivers/iio/dac/ad5064.c7
-rw-r--r--drivers/iio/dac/ad5360.c7
-rw-r--r--drivers/iio/dac/ad5380.c7
-rw-r--r--drivers/iio/dac/ad5421.c26
-rw-r--r--drivers/iio/dac/ad5446.c9
-rw-r--r--drivers/iio/dac/ad5449.c7
-rw-r--r--drivers/iio/dac/ad5504.c46
-rw-r--r--drivers/iio/dac/ad5624r_spi.c7
-rw-r--r--drivers/iio/dac/ad5686.c11
-rw-r--r--drivers/iio/dac/ad5755.c21
-rw-r--r--drivers/iio/dac/ad5764.c7
-rw-r--r--drivers/iio/dac/ad5791.c55
-rw-r--r--drivers/iio/dac/max517.c1
-rw-r--r--drivers/iio/dac/mcp4725.c1
-rw-r--r--drivers/iio/gyro/adis16130.c9
-rw-r--r--drivers/iio/gyro/adxrs450.c14
-rw-r--r--drivers/iio/gyro/hid-sensor-gyro-3d.c11
-rw-r--r--drivers/iio/humidity/Kconfig15
-rw-r--r--drivers/iio/humidity/Makefile5
-rw-r--r--drivers/iio/humidity/dht11.c294
-rw-r--r--drivers/iio/industrialio-buffer.c33
-rw-r--r--drivers/iio/industrialio-core.c102
-rw-r--r--drivers/iio/industrialio-event.c160
-rw-r--r--drivers/iio/industrialio-trigger.c40
-rw-r--r--drivers/iio/kfifo_buf.c23
-rw-r--r--drivers/iio/light/Kconfig11
-rw-r--r--drivers/iio/light/Makefile1
-rw-r--r--drivers/iio/light/adjd_s311.c7
-rw-r--r--drivers/iio/light/apds9300.c8
-rw-r--r--drivers/iio/light/cm32181.c379
-rw-r--r--drivers/iio/light/cm36651.c35
-rw-r--r--drivers/iio/light/gp2ap020a00f.c8
-rw-r--r--drivers/iio/light/hid-sensor-als.c11
-rw-r--r--drivers/iio/light/tcs3472.c7
-rw-r--r--drivers/iio/light/tsl2563.c12
-rw-r--r--drivers/iio/light/vcnl4000.c11
-rw-r--r--drivers/iio/magnetometer/hid-sensor-magn-3d.c12
-rw-r--r--drivers/iio/magnetometer/mag3110.c6
-rw-r--r--drivers/iio/orientation/Kconfig19
-rw-r--r--drivers/iio/orientation/Makefile6
-rw-r--r--drivers/iio/orientation/hid-sensor-incl-3d.c428
-rw-r--r--drivers/iio/pressure/Kconfig12
-rw-r--r--drivers/iio/pressure/Makefile1
-rw-r--r--drivers/iio/pressure/mpl3115.c329
54 files changed, 2017 insertions, 355 deletions
diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
index 90cf0cda50c..5dd0e120a50 100644
--- a/drivers/iio/Kconfig
+++ b/drivers/iio/Kconfig
@@ -65,9 +65,11 @@ source "drivers/iio/common/Kconfig"
source "drivers/iio/dac/Kconfig"
source "drivers/iio/frequency/Kconfig"
source "drivers/iio/gyro/Kconfig"
+source "drivers/iio/humidity/Kconfig"
source "drivers/iio/imu/Kconfig"
source "drivers/iio/light/Kconfig"
source "drivers/iio/magnetometer/Kconfig"
+source "drivers/iio/orientation/Kconfig"
if IIO_TRIGGER
source "drivers/iio/trigger/Kconfig"
endif #IIO_TRIGGER
diff --git a/drivers/iio/Makefile b/drivers/iio/Makefile
index bcf7e9e3b05..887d39090d7 100644
--- a/drivers/iio/Makefile
+++ b/drivers/iio/Makefile
@@ -18,9 +18,11 @@ obj-y += common/
obj-y += dac/
obj-y += gyro/
obj-y += frequency/
+obj-y += humidity/
obj-y += imu/
obj-y += light/
obj-y += magnetometer/
+obj-y += orientation/
obj-y += pressure/
obj-y += temperature/
obj-y += trigger/
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index 28b39283bcc..3bec9220df0 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -455,7 +455,12 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.scan_index = (_index), \
- .scan_type = IIO_ST('s', 14, 16, 2), \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 14, \
+ .storagebits = 16, \
+ .shift = 2, \
+ }, \
.ext_info = bma180_ext_info, \
}
diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c b/drivers/iio/accel/hid-sensor-accel-3d.c
index 1cae4e920c9..3dcdbad6545 100644
--- a/drivers/iio/accel/hid-sensor-accel-3d.c
+++ b/drivers/iio/accel/hid-sensor-accel-3d.c
@@ -262,6 +262,18 @@ static int accel_3d_parse_report(struct platform_device *pdev,
st->accel[1].index, st->accel[1].report_id,
st->accel[2].index, st->accel[2].report_id);
+ /* Set Sensitivity field ids, when there is no individual modifier */
+ if (st->common_attributes.sensitivity.index < 0) {
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+ HID_USAGE_SENSOR_DATA_ACCELERATION,
+ &st->common_attributes.sensitivity);
+ dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+ st->common_attributes.sensitivity.index,
+ st->common_attributes.sensitivity.report_id);
+ }
+
return ret;
}
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index 58e945594c7..70f78c3062a 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -43,19 +43,22 @@ struct ad7266_state {
* The buffer needs to be large enough to hold two samples (4 bytes) and
* the naturally aligned timestamp (8 bytes).
*/
- uint8_t data[ALIGN(4, sizeof(s64)) + sizeof(s64)] ____cacheline_aligned;
+ struct {
+ __be16 sample[2];
+ s64 timestamp;
+ } data ____cacheline_aligned;
};
static int ad7266_wakeup(struct ad7266_state *st)
{
/* Any read with >= 2 bytes will wake the device */
- return spi_read(st->spi, st->data, 2);
+ return spi_read(st->spi, &st->data.sample[0], 2);
}
static int ad7266_powerdown(struct ad7266_state *st)
{
/* Any read with < 2 bytes will powerdown the device */
- return spi_read(st->spi, st->data, 1);
+ return spi_read(st->spi, &st->data.sample[0], 1);
}
static int ad7266_preenable(struct iio_dev *indio_dev)
@@ -84,9 +87,9 @@ static irqreturn_t ad7266_trigger_handler(int irq, void *p)
struct ad7266_state *st = iio_priv(indio_dev);
int ret;
- ret = spi_read(st->spi, st->data, 4);
+ ret = spi_read(st->spi, st->data.sample, 4);
if (ret == 0) {
- iio_push_to_buffers_with_timestamp(indio_dev, st->data,
+ iio_push_to_buffers_with_timestamp(indio_dev, &st->data,
pf->timestamp);
}
@@ -137,7 +140,7 @@ static int ad7266_read_single(struct ad7266_state *st, int *val,
ad7266_select_input(st, address);
ret = spi_sync(st->spi, &st->single_msg);
- *val = be16_to_cpu(st->data[address % 2]);
+ *val = be16_to_cpu(st->data.sample[address % 2]);
return ret;
}
@@ -442,15 +445,15 @@ static int ad7266_probe(struct spi_device *spi)
ad7266_init_channels(indio_dev);
/* wakeup */
- st->single_xfer[0].rx_buf = &st->data;
+ st->single_xfer[0].rx_buf = &st->data.sample[0];
st->single_xfer[0].len = 2;
st->single_xfer[0].cs_change = 1;
/* conversion */
- st->single_xfer[1].rx_buf = &st->data;
+ st->single_xfer[1].rx_buf = st->data.sample;
st->single_xfer[1].len = 4;
st->single_xfer[1].cs_change = 1;
/* powerdown */
- st->single_xfer[2].tx_buf = &st->data;
+ st->single_xfer[2].tx_buf = &st->data.sample[0];
st->single_xfer[2].len = 1;
spi_message_init(&st->single_msg);
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 6118dced02b..e283f2f2ee2 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -1039,10 +1039,10 @@ static const struct iio_info max1238_info = {
};
static const struct iio_info max1363_info = {
- .read_event_value_new = &max1363_read_thresh,
- .write_event_value_new = &max1363_write_thresh,
- .read_event_config_new = &max1363_read_event_config,
- .write_event_config_new = &max1363_write_event_config,
+ .read_event_value = &max1363_read_thresh,
+ .write_event_value = &max1363_write_thresh,
+ .read_event_config = &max1363_read_event_config,
+ .write_event_config = &max1363_write_event_config,
.read_raw = &max1363_read_raw,
.update_scan_mode = &max1363_update_scan_mode,
.driver_module = THIS_MODULE,
diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
index c8c1baaec6c..47dcb34ff44 100644
--- a/drivers/iio/adc/mcp3422.c
+++ b/drivers/iio/adc/mcp3422.c
@@ -362,7 +362,7 @@ static int mcp3422_probe(struct i2c_client *client,
| MCP3422_SAMPLE_RATE_VALUE(MCP3422_SRATE_240));
mcp3422_update_config(adc, config);
- err = iio_device_register(indio_dev);
+ err = devm_iio_device_register(&client->dev, indio_dev);
if (err < 0)
return err;
@@ -371,12 +371,6 @@ static int mcp3422_probe(struct i2c_client *client,
return 0;
}
-static int mcp3422_remove(struct i2c_client *client)
-{
- iio_device_unregister(i2c_get_clientdata(client));
- return 0;
-}
-
static const struct i2c_device_id mcp3422_id[] = {
{ "mcp3422", 2 },
{ "mcp3423", 3 },
@@ -400,7 +394,6 @@ static struct i2c_driver mcp3422_driver = {
.of_match_table = of_match_ptr(mcp3422_of_match),
},
.probe = mcp3422_probe,
- .remove = mcp3422_remove,
.id_table = mcp3422_id,
};
module_i2c_driver(mcp3422_driver);
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index d4d748214e4..31e786e3999 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -60,6 +60,24 @@ static u32 get_adc_step_mask(struct tiadc_device *adc_dev)
return step_en;
}
+static u32 get_adc_chan_step_mask(struct tiadc_device *adc_dev,
+ struct iio_chan_spec const *chan)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(adc_dev->channel_step); i++) {
+ if (chan->channel == adc_dev->channel_line[i]) {
+ u32 step;
+
+ step = adc_dev->channel_step[i];
+ /* +1 for the charger */
+ return 1 << (step + 1);
+ }
+ }
+ WARN_ON(1);
+ return 0;
+}
+
static u32 get_adc_step_bit(struct tiadc_device *adc_dev, int chan)
{
return 1 << adc_dev->channel_step[chan];
@@ -181,7 +199,7 @@ static int tiadc_buffer_postenable(struct iio_dev *indio_dev)
enb |= (get_adc_step_bit(adc_dev, bit) << 1);
adc_dev->buffer_en_ch_steps = enb;
- am335x_tsc_se_set(adc_dev->mfd_tscadc, enb);
+ am335x_tsc_se_set_cache(adc_dev->mfd_tscadc, enb);
tiadc_writel(adc_dev, REG_IRQSTATUS, IRQENB_FIFO1THRES
| IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW);
@@ -199,6 +217,7 @@ static int tiadc_buffer_predisable(struct iio_dev *indio_dev)
tiadc_writel(adc_dev, REG_IRQCLR, (IRQENB_FIFO1THRES |
IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW));
am335x_tsc_se_clr(adc_dev->mfd_tscadc, adc_dev->buffer_en_ch_steps);
+ adc_dev->buffer_en_ch_steps = 0;
/* Flush FIFO of leftover data in the time it takes to disable adc */
fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
@@ -328,34 +347,43 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
unsigned int fifo1count, read, stepid;
bool found = false;
u32 step_en;
- unsigned long timeout = jiffies + usecs_to_jiffies
- (IDLE_TIMEOUT * adc_dev->channels);
+ unsigned long timeout;
if (iio_buffer_enabled(indio_dev))
return -EBUSY;
- step_en = get_adc_step_mask(adc_dev);
- am335x_tsc_se_set(adc_dev->mfd_tscadc, step_en);
+ step_en = get_adc_chan_step_mask(adc_dev, chan);
+ if (!step_en)
+ return -EINVAL;
+
+ fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
+ while (fifo1count--)
+ tiadc_readl(adc_dev, REG_FIFO1);
+
+ am335x_tsc_se_set_once(adc_dev->mfd_tscadc, step_en);
- /* Wait for ADC sequencer to complete sampling */
- while (tiadc_readl(adc_dev, REG_ADCFSM) & SEQ_STATUS) {
- if (time_after(jiffies, timeout))
+ timeout = jiffies + usecs_to_jiffies
+ (IDLE_TIMEOUT * adc_dev->channels);
+ /* Wait for Fifo threshold interrupt */
+ while (1) {
+ fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
+ if (fifo1count)
+ break;
+
+ if (time_after(jiffies, timeout)) {
+ am335x_tsc_se_adc_done(adc_dev->mfd_tscadc);
return -EAGAIN;
}
+ }
map_val = chan->channel + TOTAL_CHANNELS;
/*
- * When the sub-system is first enabled,
- * the sequencer will always start with the
- * lowest step (1) and continue until step (16).
- * For ex: If we have enabled 4 ADC channels and
- * currently use only 1 out of them, the
- * sequencer still configures all the 4 steps,
- * leading to 3 unwanted data.
- * Hence we need to flush out this data.
+ * We check the complete FIFO. We programmed just one entry but in case
+ * something went wrong we left empty handed (-EAGAIN previously) and
+ * then the value apeared somehow in the FIFO we would have two entries.
+ * Therefore we read every item and keep only the latest version of the
+ * requested channel.
*/
-
- fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
for (i = 0; i < fifo1count; i++) {
read = tiadc_readl(adc_dev, REG_FIFO1);
stepid = read & FIFOREAD_CHNLID_MASK;
@@ -367,6 +395,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
*val = (u16) read;
}
}
+ am335x_tsc_se_adc_done(adc_dev->mfd_tscadc);
if (found == false)
return -EBUSY;
@@ -494,7 +523,8 @@ static int tiadc_resume(struct device *dev)
tiadc_writel(adc_dev, REG_CTRL, restore);
tiadc_step_config(indio_dev);
-
+ am335x_tsc_se_set_cache(adc_dev->mfd_tscadc,
+ adc_dev->buffer_en_ch_steps);
return 0;
}
diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index 53e1c645cee..53a24ebb92c 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -969,7 +969,7 @@ static int twl6030_gpadc_suspend(struct device *pdev)
ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, TWL6030_GPADCR,
TWL6030_REG_TOGGLE1);
if (ret)
- dev_err(pdev, "error reseting GPADC (%d)!\n", ret);
+ dev_err(pdev, "error resetting GPADC (%d)!\n", ret);
return 0;
};
diff --git a/drivers/iio/adc/viperboard_adc.c b/drivers/iio/adc/viperboard_adc.c
index 09727a71e9f..d0add8f9416 100644
--- a/drivers/iio/adc/viperboard_adc.c
+++ b/drivers/iio/adc/viperboard_adc.c
@@ -42,12 +42,6 @@ struct vprbrd_adc {
.indexed = 1, \
.channel = _index, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
- .scan_index = _index, \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 8, \
- .storagebits = 8, \
- }, \
}
static struct iio_chan_spec const vprbrd_adc_iio_channels[] = {
@@ -73,7 +67,7 @@ static int vprbrd_iio_read_raw(struct iio_dev *iio_dev,
mutex_lock(&vb->lock);
admsg->cmd = VPRBRD_ADC_CMD_GET;
- admsg->chan = chan->scan_index;
+ admsg->chan = chan->channel;
admsg->val = 0x00;
ret = usb_control_msg(vb->usb_dev,
@@ -139,7 +133,7 @@ static int vprbrd_adc_probe(struct platform_device *pdev)
indio_dev->channels = vprbrd_adc_iio_channels;
indio_dev->num_channels = ARRAY_SIZE(vprbrd_adc_iio_channels);
- ret = iio_device_register(indio_dev);
+ ret = devm_iio_device_register(&pdev->dev, indio_dev);
if (ret) {
dev_err(&pdev->dev, "could not register iio (adc)");
return ret;
@@ -150,22 +144,12 @@ static int vprbrd_adc_probe(struct platform_device *pdev)
return 0;
}
-static int vprbrd_adc_remove(struct platform_device *pdev)
-{
- struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-
- iio_device_unregister(indio_dev);
-
- return 0;
-}
-
static struct platform_driver vprbrd_adc_driver = {
.driver = {
.name = "viperboard-adc",
.owner = THIS_MODULE,
},
.probe = vprbrd_adc_probe,
- .remove = vprbrd_adc_remove,
};
module_platform_driver(vprbrd_adc_driver);
diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c
index cb9c6366032..f03b92fd380 100644
--- a/drivers/iio/dac/ad5064.c
+++ b/drivers/iio/dac/ad5064.c
@@ -299,7 +299,12 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
BIT(IIO_CHAN_INFO_SCALE), \
.address = addr, \
- .scan_type = IIO_ST('u', (bits), 16, 20 - (bits)), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .shift = 20 - bits, \
+ }, \
.ext_info = ad5064_ext_info, \
}
diff --git a/drivers/iio/dac/ad5360.c b/drivers/iio/dac/ad5360.c
index b968af50db0..64634d7f578 100644
--- a/drivers/iio/dac/ad5360.c
+++ b/drivers/iio/dac/ad5360.c
@@ -107,7 +107,12 @@ enum ad5360_type {
BIT(IIO_CHAN_INFO_OFFSET) | \
BIT(IIO_CHAN_INFO_CALIBSCALE) | \
BIT(IIO_CHAN_INFO_CALIBBIAS), \
- .scan_type = IIO_ST('u', (bits), 16, 16 - (bits)) \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .shift = 16 - (bits), \
+ }, \
}
static const struct ad5360_chip_info ad5360_chip_info_tbl[] = {
diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c
index a59ff0e7b88..9de4c4d3828 100644
--- a/drivers/iio/dac/ad5380.c
+++ b/drivers/iio/dac/ad5380.c
@@ -261,7 +261,12 @@ static struct iio_chan_spec_ext_info ad5380_ext_info[] = {
BIT(IIO_CHAN_INFO_CALIBSCALE) | \
BIT(IIO_CHAN_INFO_CALIBBIAS), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
- .scan_type = IIO_ST('u', (_bits), 16, 14 - (_bits)), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = 16, \
+ .shift = 14 - (_bits), \
+ }, \
.ext_info = ad5380_ext_info, \
}
diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
index 3eeaa82075f..787ef1d859c 100644
--- a/drivers/iio/dac/ad5421.c
+++ b/drivers/iio/dac/ad5421.c
@@ -75,7 +75,7 @@ struct ad5421_state {
* transfer buffers to live in their own cache lines.
*/
union {
- u32 d32;
+ __be32 d32;
u8 d8[4];
} data[2] ____cacheline_aligned;
};
@@ -114,7 +114,11 @@ static const struct iio_chan_spec ad5421_channels[] = {
BIT(IIO_CHAN_INFO_CALIBBIAS),
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
- .scan_type = IIO_ST('u', 16, 16, 0),
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ },
.event_spec = ad5421_current_event,
.num_event_specs = ARRAY_SIZE(ad5421_current_event),
},
@@ -458,9 +462,9 @@ static int ad5421_read_event_value(struct iio_dev *indio_dev,
static const struct iio_info ad5421_info = {
.read_raw = ad5421_read_raw,
.write_raw = ad5421_write_raw,
- .read_event_config_new = ad5421_read_event_config,
- .write_event_config_new = ad5421_write_event_config,
- .read_event_value_new = ad5421_read_event_value,
+ .read_event_config = ad5421_read_event_config,
+ .write_event_config = ad5421_write_event_config,
+ .read_event_value = ad5421_read_event_value,
.driver_module = THIS_MODULE,
};
@@ -514,16 +518,7 @@ static int ad5421_probe(struct spi_device *spi)
return ret;
}
- return iio_device_register(indio_dev);
-}
-
-static int ad5421_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
- iio_device_unregister(indio_dev);
-
- return 0;
+ return devm_iio_device_register(&spi->dev, indio_dev);
}
static struct spi_driver ad5421_driver = {
@@ -532,7 +527,6 @@ static struct spi_driver ad5421_driver = {
.owner = THIS_MODULE,
},
.probe = ad5421_probe,
- .remove = ad5421_remove,
};
module_spi_driver(ad5421_driver);
diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c
index 1263b0e5ad8..46bb62a5c1d 100644
--- a/drivers/iio/dac/ad5446.c
+++ b/drivers/iio/dac/ad5446.c
@@ -139,14 +139,19 @@ static const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = {
{ },
};
-#define _AD5446_CHANNEL(bits, storage, shift, ext) { \
+#define _AD5446_CHANNEL(bits, storage, _shift, ext) { \
.type = IIO_VOLTAGE, \
.indexed = 1, \
.output = 1, \
.channel = 0, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
- .scan_type = IIO_ST('u', (bits), (storage), (shift)), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = (storage), \
+ .shift = (_shift), \
+ }, \
.ext_info = (ext), \
}
diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c
index 82e208f6cde..64d7256cbb6 100644
--- a/drivers/iio/dac/ad5449.c
+++ b/drivers/iio/dac/ad5449.c
@@ -204,7 +204,12 @@ static const struct iio_info ad5449_info = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
BIT(IIO_CHAN_INFO_SCALE), \
.address = (chan), \
- .scan_type = IIO_ST('u', (bits), 16, 12 - (bits)), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .shift = 12 - (bits), \
+ }, \
}
#define DECLARE_AD5449_CHANNELS(name, bits) \
diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
index c0957a918e1..1e6449346b5 100644
--- a/drivers/iio/dac/ad5504.c
+++ b/drivers/iio/dac/ad5504.c
@@ -47,14 +47,16 @@
* @vref_mv: actual reference voltage used
* @pwr_down_mask power down mask
* @pwr_down_mode current power down mode
+ * @data: transfer buffer
*/
-
struct ad5504_state {
struct spi_device *spi;
struct regulator *reg;
unsigned short vref_mv;
unsigned pwr_down_mask;
unsigned pwr_down_mode;
+
+ __be16 data[2] ____cacheline_aligned;
};
/**
@@ -66,31 +68,29 @@ enum ad5504_supported_device_ids {
ID_AD5501,
};
-static int ad5504_spi_write(struct spi_device *spi, u8 addr, u16 val)
+static int ad5504_spi_write(struct ad5504_state *st, u8 addr, u16 val)
{
- u16 tmp = cpu_to_be16(AD5504_CMD_WRITE |
- AD5504_ADDR(addr) |
+ st->data[0] = cpu_to_be16(AD5504_CMD_WRITE | AD5504_ADDR(addr) |
(val & AD5504_RES_MASK));
- return spi_write(spi, (u8 *)&tmp, 2);
+ return spi_write(st->spi, &st->data[0], 2);
}
-static int ad5504_spi_read(struct spi_device *spi, u8 addr)
+static int ad5504_spi_read(struct ad5504_state *st, u8 addr)
{
- u16 tmp = cpu_to_be16(AD5504_CMD_READ | AD5504_ADDR(addr));
- u16 val;
int ret;
- struct spi_transfer t = {
- .tx_buf = &tmp,
- .rx_buf = &val,
- .len = 2,
- };
- ret = spi_sync_transfer(spi, &t, 1);
-
+ struct spi_transfer t = {
+ .tx_buf = &st->data[0],
+ .rx_buf = &st->data[1],
+ .len = 2,
+ };
+
+ st->data[0] = cpu_to_be16(AD5504_CMD_READ | AD5504_ADDR(addr));
+ ret = spi_sync_transfer(st->spi, &t, 1);
if (ret < 0)
return ret;
- return be16_to_cpu(val) & AD5504_RES_MASK;
+ return be16_to_cpu(st->data[1]) & AD5504_RES_MASK;
}
static int ad5504_read_raw(struct iio_dev *indio_dev,
@@ -104,7 +104,7 @@ static int ad5504_read_raw(struct iio_dev *indio_dev,
switch (m) {
case IIO_CHAN_INFO_RAW:
- ret = ad5504_spi_read(st->spi, chan->address);
+ ret = ad5504_spi_read(st, chan->address);
if (ret < 0)
return ret;
@@ -133,7 +133,7 @@ static int ad5504_write_raw(struct iio_dev *indio_dev,
if (val >= (1 << chan->scan_type.realbits) || val < 0)
return -EINVAL;
- return ad5504_spi_write(st->spi, chan->address, val);
+ return ad5504_spi_write(st, chan->address, val);
default:
ret = -EINVAL;
}
@@ -197,12 +197,12 @@ static ssize_t ad5504_write_dac_powerdown(struct iio_dev *indio_dev,
else
st->pwr_down_mask &= ~(1 << chan->channel);
- ret = ad5504_spi_write(st->spi, AD5504_ADDR_CTRL,
+ ret = ad5504_spi_write(st, AD5504_ADDR_CTRL,
AD5504_DAC_PWRDWN_MODE(st->pwr_down_mode) |
AD5504_DAC_PWR(st->pwr_down_mask));
/* writes to the CTRL register must be followed by a NOOP */
- ad5504_spi_write(st->spi, AD5504_ADDR_NOOP, 0);
+ ad5504_spi_write(st, AD5504_ADDR_NOOP, 0);
return ret ? ret : len;
}
@@ -261,7 +261,11 @@ static const struct iio_chan_spec_ext_info ad5504_ext_info[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.address = AD5504_ADDR_DAC(_chan), \
- .scan_type = IIO_ST('u', 12, 16, 0), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 12, \
+ .storagebits = 16, \
+ }, \
.ext_info = ad5504_ext_info, \
}
diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c
index 774dd968145..e8199cce2ae 100644
--- a/drivers/iio/dac/ad5624r_spi.c
+++ b/drivers/iio/dac/ad5624r_spi.c
@@ -176,7 +176,12 @@ static const struct iio_chan_spec_ext_info ad5624r_ext_info[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.address = (_chan), \
- .scan_type = IIO_ST('u', (_bits), 16, 16 - (_bits)), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = 16, \
+ .shift = 16 - (_bits), \
+ }, \
.ext_info = ad5624r_ext_info, \
}
diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index 30e506e37dd..17aca4d9bd0 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -78,7 +78,7 @@ struct ad5686_state {
*/
union {
- u32 d32;
+ __be32 d32;
u8 d8[4];
} data[3] ____cacheline_aligned;
};
@@ -267,7 +267,7 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
{ },
};
-#define AD5868_CHANNEL(chan, bits, shift) { \
+#define AD5868_CHANNEL(chan, bits, _shift) { \
.type = IIO_VOLTAGE, \
.indexed = 1, \
.output = 1, \
@@ -275,7 +275,12 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),\
.address = AD5686_ADDR_DAC(chan), \
- .scan_type = IIO_ST('u', bits, 16, shift), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .shift = (_shift), \
+ }, \
.ext_info = ad5686_ext_info, \
}
diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c
index 9a78d5abb2f..a7c851f62d7 100644
--- a/drivers/iio/dac/ad5755.c
+++ b/drivers/iio/dac/ad5755.c
@@ -97,7 +97,7 @@ struct ad5755_state {
*/
union {
- u32 d32;
+ __be32 d32;
u8 d8[4];
} data[2] ____cacheline_aligned;
};
@@ -392,7 +392,12 @@ static const struct iio_chan_spec_ext_info ad5755_ext_info[] = {
BIT(IIO_CHAN_INFO_OFFSET) | \
BIT(IIO_CHAN_INFO_CALIBSCALE) | \
BIT(IIO_CHAN_INFO_CALIBBIAS), \
- .scan_type = IIO_ST('u', (_bits), 16, 16 - (_bits)), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = 16, \
+ .shift = 16 - (_bits), \
+ }, \
.ext_info = ad5755_ext_info, \
}
@@ -589,16 +594,7 @@ static int ad5755_probe(struct spi_device *spi)
if (ret)
return ret;
- return iio_device_register(indio_dev);
-}
-
-static int ad5755_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
- iio_device_unregister(indio_dev);
-
- return 0;
+ return devm_iio_device_register(&spi->dev, indio_dev);
}
static const struct spi_device_id ad5755_id[] = {
@@ -617,7 +613,6 @@ static struct spi_driver ad5755_driver = {
.owner = THIS_MODULE,
},
.probe = ad5755_probe,
- .remove = ad5755_remove,
.id_table = ad5755_id,
};
module_spi_driver(ad5755_driver);
diff --git a/drivers/iio/dac/ad5764.c b/drivers/iio/dac/ad5764.c
index a8ff5b2ed13..d0d38165339 100644
--- a/drivers/iio/dac/ad5764.c
+++ b/drivers/iio/dac/ad5764.c
@@ -83,7 +83,12 @@ enum ad5764_type {
BIT(IIO_CHAN_INFO_CALIBSCALE) | \
BIT(IIO_CHAN_INFO_CALIBBIAS), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET), \
- .scan_type = IIO_ST('u', (_bits), 16, 16 - (_bits)) \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = 16, \
+ .shift = 16 - (_bits), \
+ }, \
}
#define DECLARE_AD5764_CHANNELS(_name, _bits) \
diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c
index d64acbd8948..ae49afe2b38 100644
--- a/drivers/iio/dac/ad5791.c
+++ b/drivers/iio/dac/ad5791.c
@@ -91,6 +91,11 @@ struct ad5791_state {
unsigned ctrl;
unsigned pwr_down_mode;
bool pwr_down;
+
+ union {
+ __be32 d32;
+ u8 d8[4];
+ } data[3] ____cacheline_aligned;
};
/**
@@ -104,48 +109,39 @@ enum ad5791_supported_device_ids {
ID_AD5791,
};
-static int ad5791_spi_write(struct spi_device *spi, u8 addr, u32 val)
+static int ad5791_spi_write(struct ad5791_state *st, u8 addr, u32 val)
{
- union {
- u32 d32;
- u8 d8[4];
- } data;
-
- data.d32 = cpu_to_be32(AD5791_CMD_WRITE |
+ st->data[0].d32 = cpu_to_be32(AD5791_CMD_WRITE |
AD5791_ADDR(addr) |
(val & AD5791_DAC_MASK));
- return spi_write(spi, &data.d8[1], 3);
+ return spi_write(st->spi, &st->data[0].d8[1], 3);
}
-static int ad5791_spi_read(struct spi_device *spi, u8 addr, u32 *val)
+static int ad5791_spi_read(struct ad5791_state *st, u8 addr, u32 *val)
{
- union {
- u32 d32;
- u8 d8[4];
- } data[3];
int ret;
struct spi_transfer xfers[] = {
{
- .tx_buf = &data[0].d8[1],
+ .tx_buf = &st->data[0].d8[1],
.bits_per_word = 8,
.len = 3,
.cs_change = 1,
}, {
- .tx_buf = &data[1].d8[1],
- .rx_buf = &data[2].d8[1],
+ .tx_buf = &st->data[1].d8[1],
+ .rx_buf = &st->data[2].d8[1],
.bits_per_word = 8,
.len = 3,
},
};
- data[0].d32 = cpu_to_be32(AD5791_CMD_READ |
+ st->data[0].d32 = cpu_to_be32(AD5791_CMD_READ |
AD5791_ADDR(addr));
- data[1].d32 = cpu_to_be32(AD5791_ADDR(AD5791_ADDR_NOOP));
+ st->data[1].d32 = cpu_to_be32(AD5791_ADDR(AD5791_ADDR_NOOP));
- ret = spi_sync_transfer(spi, xfers, ARRAY_SIZE(xfers));
+ ret = spi_sync_transfer(st->spi, xfers, ARRAY_SIZE(xfers));
- *val = be32_to_cpu(data[2].d32);
+ *val = be32_to_cpu(st->data[2].d32);
return ret;
}
@@ -210,7 +206,7 @@ static ssize_t ad5791_write_dac_powerdown(struct iio_dev *indio_dev,
}
st->pwr_down = pwr_down;
- ret = ad5791_spi_write(st->spi, AD5791_ADDR_CTRL, st->ctrl);
+ ret = ad5791_spi_write(st, AD5791_ADDR_CTRL, st->ctrl);
return ret ? ret : len;
}
@@ -263,7 +259,7 @@ static int ad5791_read_raw(struct iio_dev *indio_dev,
switch (m) {
case IIO_CHAN_INFO_RAW:
- ret = ad5791_spi_read(st->spi, chan->address, val);
+ ret = ad5791_spi_read(st, chan->address, val);
if (ret)
return ret;
*val &= AD5791_DAC_MASK;
@@ -297,7 +293,7 @@ static const struct iio_chan_spec_ext_info ad5791_ext_info[] = {
{ },
};
-#define AD5791_CHAN(bits, shift) { \
+#define AD5791_CHAN(bits, _shift) { \
.type = IIO_VOLTAGE, \
.output = 1, \
.indexed = 1, \
@@ -306,7 +302,12 @@ static const struct iio_chan_spec_ext_info ad5791_ext_info[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
BIT(IIO_CHAN_INFO_OFFSET), \
- .scan_type = IIO_ST('u', bits, 24, shift), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 24, \
+ .shift = (_shift), \
+ }, \
.ext_info = ad5791_ext_info, \
}
@@ -330,7 +331,7 @@ static int ad5791_write_raw(struct iio_dev *indio_dev,
val &= AD5791_RES_MASK(chan->scan_type.realbits);
val <<= chan->scan_type.shift;
- return ad5791_spi_write(st->spi, chan->address, val);
+ return ad5791_spi_write(st, chan->address, val);
default:
return -EINVAL;
@@ -393,7 +394,7 @@ static int ad5791_probe(struct spi_device *spi)
dev_warn(&spi->dev, "reference voltage unspecified\n");
}
- ret = ad5791_spi_write(spi, AD5791_ADDR_SW_CTRL, AD5791_SWCTRL_RESET);
+ ret = ad5791_spi_write(st, AD5791_ADDR_SW_CTRL, AD5791_SWCTRL_RESET);
if (ret)
goto error_disable_reg_neg;
@@ -405,7 +406,7 @@ static int ad5791_probe(struct spi_device *spi)
| ((pdata && pdata->use_rbuf_gain2) ? 0 : AD5791_CTRL_RBUF) |
AD5791_CTRL_BIN2SC;
- ret = ad5791_spi_write(spi, AD5791_ADDR_CTRL, st->ctrl |
+ ret = ad5791_spi_write(st, AD5791_ADDR_CTRL, st->ctrl |
AD5791_CTRL_OPGND | AD5791_CTRL_DACTRI);
if (ret)
goto error_disable_reg_neg;
diff --git a/drivers/iio/dac/max517.c b/drivers/iio/dac/max517.c
index 6e190353795..de76e6a34c1 100644
--- a/drivers/iio/dac/max517.c
+++ b/drivers/iio/dac/max517.c
@@ -146,7 +146,6 @@ static const struct iio_info max517_info = {
.channel = (chan), \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
BIT(IIO_CHAN_INFO_SCALE), \
- .scan_type = IIO_ST('u', 8, 8, 0), \
}
static const struct iio_chan_spec max517_channels[] = {
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
index 9f57ae84ab8..7d9f5c31d2f 100644
--- a/drivers/iio/dac/mcp4725.c
+++ b/drivers/iio/dac/mcp4725.c
@@ -209,7 +209,6 @@ static const struct iio_chan_spec mcp4725_channel = {
.channel = 0,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
- .scan_type = IIO_ST('u', 12, 16, 0),
.ext_info = mcp4725_ext_info,
};
diff --git a/drivers/iio/gyro/adis16130.c b/drivers/iio/gyro/adis16130.c
index 445c2aecfad..8d08c7ed1ea 100644
--- a/drivers/iio/gyro/adis16130.c
+++ b/drivers/iio/gyro/adis16130.c
@@ -161,13 +161,7 @@ static int adis16130_probe(struct spi_device *spi)
indio_dev->info = &adis16130_info;
indio_dev->modes = INDIO_DIRECT_MODE;
- return iio_device_register(indio_dev);
-}
-
-static int adis16130_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
- return 0;
+ return devm_iio_device_register(&spi->dev, indio_dev);
}
static struct spi_driver adis16130_driver = {
@@ -176,7 +170,6 @@ static struct spi_driver adis16130_driver = {
.owner = THIS_MODULE,
},
.probe = adis16130_probe,
- .remove = adis16130_remove,
};
module_spi_driver(adis16130_driver);
diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c
index 1e546ba7ba4..eb0e08ec9e2 100644
--- a/drivers/iio/gyro/adxrs450.c
+++ b/drivers/iio/gyro/adxrs450.c
@@ -434,23 +434,14 @@ static int adxrs450_probe(struct spi_device *spi)
indio_dev->num_channels = ARRAY_SIZE(adxrs450_channels);
indio_dev->name = spi->dev.driver->name;
- ret = iio_device_register(indio_dev);
+ ret = devm_iio_device_register(&spi->dev, indio_dev);
if (ret)
return ret;
/* Get the device into a sane initial state */
ret = adxrs450_initial_setup(indio_dev);
if (ret)
- goto error_initial;
- return 0;
-error_initial:
- iio_device_unregister(indio_dev);
- return ret;
-}
-
-static int adxrs450_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
+ return ret;
return 0;
}
@@ -468,7 +459,6 @@ static struct spi_driver adxrs450_driver = {
.owner = THIS_MODULE,
},
.probe = adxrs450_probe,
- .remove = adxrs450_remove,
.id_table = adxrs450_id,
};
module_spi_driver(adxrs450_driver);
diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c
index e54f0f4959d..59d6bc3e04d 100644
--- a/drivers/iio/gyro/hid-sensor-gyro-3d.c
+++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c
@@ -262,6 +262,17 @@ static int gyro_3d_parse_report(struct platform_device *pdev,
st->gyro[1].index, st->gyro[1].report_id,
st->gyro[2].index, st->gyro[2].report_id);
+ /* Set Sensitivity field ids, when there is no individual modifier */
+ if (st->common_attributes.sensitivity.index < 0) {
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+ HID_USAGE_SENSOR_DATA_ANGL_VELOCITY,
+ &st->common_attributes.sensitivity);
+ dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+ st->common_attributes.sensitivity.index,
+ st->common_attributes.sensitivity.report_id);
+ }
return ret;
}
diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig
new file mode 100644
index 00000000000..463c4d9da79
--- /dev/null
+++ b/drivers/iio/humidity/Kconfig
@@ -0,0 +1,15 @@
+#
+# humidity sensor drivers
+#
+menu "Humidity sensors"
+
+config DHT11
+ tristate "DHT11 (and compatible sensors) driver"
+ depends on GPIOLIB
+ help
+ This driver supports reading data via a single interrupt
+ generating GPIO line. Currently tested are DHT11 and DHT22.
+ Other sensors should work as well as long as they speak the
+ same protocol.
+
+endmenu
diff --git a/drivers/iio/humidity/Makefile b/drivers/iio/humidity/Makefile
new file mode 100644
index 00000000000..d5d36c0c95f
--- /dev/null
+++ b/drivers/iio/humidity/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for IIO humidity sensor drivers
+#
+
+obj-$(CONFIG_DHT11) += dht11.o
diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c
new file mode 100644
index 00000000000..d8771f546bf
--- /dev/null
+++ b/drivers/iio/humidity/dht11.c
@@ -0,0 +1,294 @@
+/*
+ * DHT11/DHT22 bit banging GPIO driver
+ *
+ * Copyright (c) Harald Geyer <harald@ccbib.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/sysfs.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/wait.h>
+#include <linux/bitops.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+
+#include <linux/iio/iio.h>
+
+#define DRIVER_NAME "dht11"
+
+#define DHT11_DATA_VALID_TIME 2000000000 /* 2s in ns */
+
+#define DHT11_EDGES_PREAMBLE 4
+#define DHT11_BITS_PER_READ 40
+#define DHT11_EDGES_PER_READ (2*DHT11_BITS_PER_READ + DHT11_EDGES_PREAMBLE + 1)
+
+/* Data transmission timing (nano seconds) */
+#define DHT11_START_TRANSMISSION 18 /* ms */
+#define DHT11_SENSOR_RESPONSE 80000
+#define DHT11_START_BIT 50000
+#define DHT11_DATA_BIT_LOW 27000
+#define DHT11_DATA_BIT_HIGH 70000
+
+struct dht11 {
+ struct device *dev;
+
+ int gpio;
+ int irq;
+
+ struct completion completion;
+
+ s64 timestamp;
+ int temperature;
+ int humidity;
+
+ /* num_edges: -1 means "no transmission in progress" */
+ int num_edges;
+ struct {s64 ts; int value; } edges[DHT11_EDGES_PER_READ];
+};
+
+static unsigned char dht11_decode_byte(int *timing, int threshold)
+{
+ unsigned char ret = 0;
+ int i;
+
+ for (i = 0; i < 8; ++i) {
+ ret <<= 1;
+ if (timing[i] >= threshold)
+ ++ret;
+ }
+
+ return ret;
+}
+
+static int dht11_decode(struct dht11 *dht11, int offset)
+{
+ int i, t, timing[DHT11_BITS_PER_READ], threshold,
+ timeres = DHT11_SENSOR_RESPONSE;
+ unsigned char temp_int, temp_dec, hum_int, hum_dec, checksum;
+
+ /* Calculate timestamp resolution */
+ for (i = 0; i < dht11->num_edges; ++i) {
+ t = dht11->edges[i].ts - dht11->edges[i-1].ts;
+ if (t > 0 && t < timeres)
+ timeres = t;
+ }
+ if (2*timeres > DHT11_DATA_BIT_HIGH) {
+ pr_err("dht11: timeresolution %d too bad for decoding\n",
+ timeres);
+ return -EIO;
+ }
+ threshold = DHT11_DATA_BIT_HIGH / timeres;
+ if (DHT11_DATA_BIT_LOW/timeres + 1 >= threshold)
+ pr_err("dht11: WARNING: decoding ambiguous\n");
+
+ /* scale down with timeres and check validity */
+ for (i = 0; i < DHT11_BITS_PER_READ; ++i) {
+ t = dht11->edges[offset + 2*i + 2].ts -
+ dht11->edges[offset + 2*i + 1].ts;
+ if (!dht11->edges[offset + 2*i + 1].value)
+ return -EIO; /* lost synchronisation */
+ timing[i] = t / timeres;
+ }
+
+ hum_int = dht11_decode_byte(timing, threshold);
+ hum_dec = dht11_decode_byte(&timing[8], threshold);
+ temp_int = dht11_decode_byte(&timing[16], threshold);
+ temp_dec = dht11_decode_byte(&timing[24], threshold);
+ checksum = dht11_decode_byte(&timing[32], threshold);
+
+ if (((hum_int + hum_dec + temp_int + temp_dec) & 0xff) != checksum)
+ return -EIO;
+
+ dht11->timestamp = iio_get_time_ns();
+ if (hum_int < 20) { /* DHT22 */
+ dht11->temperature = (((temp_int & 0x7f) << 8) + temp_dec) *
+ ((temp_int & 0x80) ? -100 : 100);
+ dht11->humidity = ((hum_int << 8) + hum_dec) * 100;
+ } else if (temp_dec == 0 && hum_dec == 0) { /* DHT11 */
+ dht11->temperature = temp_int * 1000;
+ dht11->humidity = hum_int * 1000;
+ } else {
+ dev_err(dht11->dev,
+ "Don't know how to decode data: %d %d %d %d\n",
+ hum_int, hum_dec, temp_int, temp_dec);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int dht11_read_raw(struct iio_dev *iio_dev,
+ const struct iio_chan_spec *chan,
+ int *val, int *val2, long m)
+{
+ struct dht11 *dht11 = iio_priv(iio_dev);
+ int ret;
+
+ if (dht11->timestamp + DHT11_DATA_VALID_TIME < iio_get_time_ns()) {
+ reinit_completion(&dht11->completion);
+
+ dht11->num_edges = 0;
+ ret = gpio_direction_output(dht11->gpio, 0);
+ if (ret)
+ goto err;
+ msleep(DHT11_START_TRANSMISSION);
+ ret = gpio_direction_input(dht11->gpio);
+ if (ret)
+ goto err;
+
+ ret = wait_for_completion_killable_timeout(&dht11->completion,
+ HZ);
+ if (ret == 0 && dht11->num_edges < DHT11_EDGES_PER_READ - 1) {
+ dev_err(&iio_dev->dev,
+ "Only %d signal edges detected\n",
+ dht11->num_edges);
+ ret = -ETIMEDOUT;
+ }
+ if (ret < 0)
+ goto err;
+
+ ret = dht11_decode(dht11,
+ dht11->num_edges == DHT11_EDGES_PER_READ ?
+ DHT11_EDGES_PREAMBLE :
+ DHT11_EDGES_PREAMBLE - 2);
+ if (ret)
+ goto err;
+ }
+
+ ret = IIO_VAL_INT;
+ if (chan->type == IIO_TEMP)
+ *val = dht11->temperature;
+ else if (chan->type == IIO_HUMIDITYRELATIVE)
+ *val = dht11->humidity;
+ else
+ ret = -EINVAL;
+err:
+ dht11->num_edges = -1;
+ return ret;
+}
+
+static const struct iio_info dht11_iio_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = dht11_read_raw,
+};
+
+/*
+ * IRQ handler called on GPIO edges
+*/
+static irqreturn_t dht11_handle_irq(int irq, void *data)
+{
+ struct iio_dev *iio = data;
+ struct dht11 *dht11 = iio_priv(iio);
+
+ /* TODO: Consider making the handler safe for IRQ sharing */
+ if (dht11->num_edges < DHT11_EDGES_PER_READ && dht11->num_edges >= 0) {
+ dht11->edges[dht11->num_edges].ts = iio_get_time_ns();
+ dht11->edges[dht11->num_edges++].value =
+ gpio_get_value(dht11->gpio);
+
+ if (dht11->num_edges >= DHT11_EDGES_PER_READ)
+ complete(&dht11->completion);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static const struct iio_chan_spec dht11_chan_spec[] = {
+ { .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), },
+ { .type = IIO_HUMIDITYRELATIVE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), }
+};
+
+static const struct of_device_id dht11_dt_ids[] = {
+ { .compatible = "dht11", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, dht11_dt_ids);
+
+static int dht11_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
+ struct dht11 *dht11;
+ struct iio_dev *iio;
+ int ret;
+
+ iio = devm_iio_device_alloc(dev, sizeof(*dht11));
+ if (!iio) {
+ dev_err(dev, "Failed to allocate IIO device\n");
+ return -ENOMEM;
+ }
+
+ dht11 = iio_priv(iio);
+ dht11->dev = dev;
+
+ dht11->gpio = ret = of_get_gpio(node, 0);
+ if (ret < 0)
+ return ret;
+ ret = devm_gpio_request_one(dev, dht11->gpio, GPIOF_IN, pdev->name);
+ if (ret)
+ return ret;
+
+ dht11->irq = gpio_to_irq(dht11->gpio);
+ if (dht11->irq < 0) {
+ dev_err(dev, "GPIO %d has no interrupt\n", dht11->gpio);
+ return -EINVAL;
+ }
+ ret = devm_request_irq(dev, dht11->irq, dht11_handle_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ pdev->name, iio);
+ if (ret)
+ return ret;
+
+ dht11->timestamp = iio_get_time_ns() - DHT11_DATA_VALID_TIME - 1;
+ dht11->num_edges = -1;
+
+ platform_set_drvdata(pdev, iio);
+
+ init_completion(&dht11->completion);
+ iio->name = pdev->name;
+ iio->dev.parent = &pdev->dev;
+ iio->info = &dht11_iio_info;
+ iio->modes = INDIO_DIRECT_MODE;
+ iio->channels = dht11_chan_spec;
+ iio->num_channels = ARRAY_SIZE(dht11_chan_spec);
+
+ return devm_iio_device_register(dev, iio);
+}
+
+static struct platform_driver dht11_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = dht11_dt_ids,
+ },
+ .probe = dht11_probe,
+};
+
+module_platform_driver(dht11_driver);
+
+MODULE_AUTHOR("Harald Geyer <harald@ccbib.org>");
+MODULE_DESCRIPTION("DHT11 humidity/temperature sensor driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 7f9152c3c4d..c67d83bdc8f 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -37,6 +37,14 @@ static bool iio_buffer_is_active(struct iio_buffer *buf)
return !list_empty(&buf->buffer_list);
}
+static bool iio_buffer_data_available(struct iio_buffer *buf)
+{
+ if (buf->access->data_available)
+ return buf->access->data_available(buf);
+
+ return buf->stufftoread;
+}
+
/**
* iio_buffer_read_first_n_outer() - chrdev read for buffer access
*
@@ -48,13 +56,34 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,
{
struct iio_dev *indio_dev = filp->private_data;
struct iio_buffer *rb = indio_dev->buffer;
+ int ret;
if (!indio_dev->info)
return -ENODEV;
if (!rb || !rb->access->read_first_n)
return -EINVAL;
- return rb->access->read_first_n(rb, n, buf);
+
+ do {
+ if (!iio_buffer_data_available(rb)) {
+ if (filp->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ ret = wait_event_interruptible(rb->pollq,
+ iio_buffer_data_available(rb) ||
+ indio_dev->info == NULL);
+ if (ret)
+ return ret;
+ if (indio_dev->info == NULL)
+ return -ENODEV;
+ }
+
+ ret = rb->access->read_first_n(rb, n, buf);
+ if (ret == 0 && (filp->f_flags & O_NONBLOCK))
+ ret = -EAGAIN;
+ } while (ret == 0);
+
+ return ret;
}
/**
@@ -70,7 +99,7 @@ unsigned int iio_buffer_poll(struct file *filp,
return -ENODEV;
poll_wait(filp, &rb->pollq, wait);
- if (rb->stufftoread)
+ if (iio_buffer_data_available(rb))
return POLLIN | POLLRDNORM;
/* need a way of knowing if there may be enough data... */
return 0;
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 18f72e3d0ed..acc911a836c 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -69,6 +69,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_ALTVOLTAGE] = "altvoltage",
[IIO_CCT] = "cct",
[IIO_PRESSURE] = "pressure",
+ [IIO_HUMIDITYRELATIVE] = "humidityrelative",
};
static const char * const iio_modifier_names[] = {
@@ -107,6 +108,11 @@ static const char * const iio_chan_info_postfix[] = {
[IIO_CHAN_INFO_INT_TIME] = "integration_time",
};
+/**
+ * iio_find_channel_from_si() - get channel from its scan index
+ * @indio_dev: device
+ * @si: scan index to match
+ */
const struct iio_chan_spec
*iio_find_channel_from_si(struct iio_dev *indio_dev, int si)
{
@@ -922,6 +928,10 @@ struct device_type iio_device_type = {
.release = iio_dev_release,
};
+/**
+ * iio_device_alloc() - allocate an iio_dev from a driver
+ * @sizeof_priv: Space to allocate for private structure.
+ **/
struct iio_dev *iio_device_alloc(int sizeof_priv)
{
struct iio_dev *dev;
@@ -962,6 +972,10 @@ struct iio_dev *iio_device_alloc(int sizeof_priv)
}
EXPORT_SYMBOL(iio_device_alloc);
+/**
+ * iio_device_free() - free an iio_dev from a driver
+ * @dev: the iio_dev associated with the device
+ **/
void iio_device_free(struct iio_dev *dev)
{
if (dev)
@@ -984,6 +998,20 @@ static int devm_iio_device_match(struct device *dev, void *res, void *data)
return *r == data;
}
+/**
+ * devm_iio_device_alloc - Resource-managed iio_device_alloc()
+ * @dev: Device to allocate iio_dev for
+ * @sizeof_priv: Space to allocate for private structure.
+ *
+ * Managed iio_device_alloc. iio_dev allocated with this function is
+ * automatically freed on driver detach.
+ *
+ * If an iio_dev allocated with this function needs to be freed separately,
+ * devm_iio_device_free() must be used.
+ *
+ * RETURNS:
+ * Pointer to allocated iio_dev on success, NULL on failure.
+ */
struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv)
{
struct iio_dev **ptr, *iio_dev;
@@ -1006,6 +1034,13 @@ struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv)
}
EXPORT_SYMBOL_GPL(devm_iio_device_alloc);
+/**
+ * devm_iio_device_free - Resource-managed iio_device_free()
+ * @dev: Device this iio_dev belongs to
+ * @iio_dev: the iio_dev associated with the device
+ *
+ * Free iio_dev allocated with devm_iio_device_alloc().
+ */
void devm_iio_device_free(struct device *dev, struct iio_dev *iio_dev)
{
int rc;
@@ -1080,6 +1115,10 @@ static const struct file_operations iio_buffer_fileops = {
static const struct iio_buffer_setup_ops noop_ring_setup_ops;
+/**
+ * iio_device_register() - register a device with the IIO subsystem
+ * @indio_dev: Device structure filled by the device driver
+ **/
int iio_device_register(struct iio_dev *indio_dev)
{
int ret;
@@ -1141,6 +1180,10 @@ error_ret:
}
EXPORT_SYMBOL(iio_device_register);
+/**
+ * iio_device_unregister() - unregister a device from the IIO subsystem
+ * @indio_dev: Device structure representing the device.
+ **/
void iio_device_unregister(struct iio_dev *indio_dev)
{
mutex_lock(&indio_dev->info_exist_lock);
@@ -1161,6 +1204,65 @@ void iio_device_unregister(struct iio_dev *indio_dev)
mutex_unlock(&indio_dev->info_exist_lock);
}
EXPORT_SYMBOL(iio_device_unregister);
+
+static void devm_iio_device_unreg(struct device *dev, void *res)
+{
+ iio_device_unregister(*(struct iio_dev **)res);
+}
+
+/**
+ * devm_iio_device_register - Resource-managed iio_device_register()
+ * @dev: Device to allocate iio_dev for
+ * @indio_dev: Device structure filled by the device driver
+ *
+ * Managed iio_device_register. The IIO device registered with this
+ * function is automatically unregistered on driver detach. This function
+ * calls iio_device_register() internally. Refer to that function for more
+ * information.
+ *
+ * If an iio_dev registered with this function needs to be unregistered
+ * separately, devm_iio_device_unregister() must be used.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev)
+{
+ struct iio_dev **ptr;
+ int ret;
+
+ ptr = devres_alloc(devm_iio_device_unreg, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ *ptr = indio_dev;
+ ret = iio_device_register(indio_dev);
+ if (!ret)
+ devres_add(dev, ptr);
+ else
+ devres_free(ptr);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(devm_iio_device_register);
+
+/**
+ * devm_iio_device_unregister - Resource-managed iio_device_unregister()
+ * @dev: Device this iio_dev belongs to
+ * @indio_dev: the iio_dev associated with the device
+ *
+ * Unregister iio_dev registered with devm_iio_device_register().
+ */
+void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev)
+{
+ int rc;
+
+ rc = devres_release(dev, devm_iio_device_unreg,
+ devm_iio_device_match, indio_dev);
+ WARN_ON(rc);
+}
+EXPORT_SYMBOL_GPL(devm_iio_device_unregister);
+
subsys_initcall(iio_init);
module_exit(iio_exit);
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index c10eab64bc0..c9c1419fe6e 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -42,6 +42,12 @@ struct iio_event_interface {
struct attribute_group group;
};
+/**
+ * iio_push_event() - try to add event to the list for userspace reading
+ * @indio_dev: IIO device structure
+ * @ev_code: What event
+ * @timestamp: When the event occurred
+ **/
int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp)
{
struct iio_event_interface *ev_int = indio_dev->event_interface;
@@ -236,13 +242,9 @@ static ssize_t iio_ev_state_store(struct device *dev,
if (ret < 0)
return ret;
- if (indio_dev->info->write_event_config)
- ret = indio_dev->info->write_event_config(indio_dev,
- this_attr->address, val);
- else
- ret = indio_dev->info->write_event_config_new(indio_dev,
- this_attr->c, iio_ev_attr_type(this_attr),
- iio_ev_attr_dir(this_attr), val);
+ ret = indio_dev->info->write_event_config(indio_dev,
+ this_attr->c, iio_ev_attr_type(this_attr),
+ iio_ev_attr_dir(this_attr), val);
return (ret < 0) ? ret : len;
}
@@ -255,13 +257,9 @@ static ssize_t iio_ev_state_show(struct device *dev,
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
int val;
- if (indio_dev->info->read_event_config)
- val = indio_dev->info->read_event_config(indio_dev,
- this_attr->address);
- else
- val = indio_dev->info->read_event_config_new(indio_dev,
- this_attr->c, iio_ev_attr_type(this_attr),
- iio_ev_attr_dir(this_attr));
+ val = indio_dev->info->read_event_config(indio_dev,
+ this_attr->c, iio_ev_attr_type(this_attr),
+ iio_ev_attr_dir(this_attr));
if (val < 0)
return val;
else
@@ -277,21 +275,13 @@ static ssize_t iio_ev_value_show(struct device *dev,
int val, val2;
int ret;
- if (indio_dev->info->read_event_value) {
- ret = indio_dev->info->read_event_value(indio_dev,
- this_attr->address, &val);
- if (ret < 0)
- return ret;
- return sprintf(buf, "%d\n", val);
- } else {
- ret = indio_dev->info->read_event_value_new(indio_dev,
- this_attr->c, iio_ev_attr_type(this_attr),
- iio_ev_attr_dir(this_attr), iio_ev_attr_info(this_attr),
- &val, &val2);
- if (ret < 0)
- return ret;
- return iio_format_value(buf, ret, val, val2);
- }
+ ret = indio_dev->info->read_event_value(indio_dev,
+ this_attr->c, iio_ev_attr_type(this_attr),
+ iio_ev_attr_dir(this_attr), iio_ev_attr_info(this_attr),
+ &val, &val2);
+ if (ret < 0)
+ return ret;
+ return iio_format_value(buf, ret, val, val2);
}
static ssize_t iio_ev_value_store(struct device *dev,
@@ -304,25 +294,16 @@ static ssize_t iio_ev_value_store(struct device *dev,
int val, val2;
int ret;
- if (!indio_dev->info->write_event_value &&
- !indio_dev->info->write_event_value_new)
+ if (!indio_dev->info->write_event_value)
return -EINVAL;
- if (indio_dev->info->write_event_value) {
- ret = kstrtoint(buf, 10, &val);
- if (ret)
- return ret;
- ret = indio_dev->info->write_event_value(indio_dev,
- this_attr->address, val);
- } else {
- ret = iio_str_to_fixpoint(buf, 100000, &val, &val2);
- if (ret)
- return ret;
- ret = indio_dev->info->write_event_value_new(indio_dev,
- this_attr->c, iio_ev_attr_type(this_attr),
- iio_ev_attr_dir(this_attr), iio_ev_attr_info(this_attr),
- val, val2);
- }
+ ret = iio_str_to_fixpoint(buf, 100000, &val, &val2);
+ if (ret)
+ return ret;
+ ret = indio_dev->info->write_event_value(indio_dev,
+ this_attr->c, iio_ev_attr_type(this_attr),
+ iio_ev_attr_dir(this_attr), iio_ev_attr_info(this_attr),
+ val, val2);
if (ret < 0)
return ret;
@@ -371,7 +352,7 @@ static int iio_device_add_event(struct iio_dev *indio_dev,
return attrcount;
}
-static int iio_device_add_event_sysfs_new(struct iio_dev *indio_dev,
+static int iio_device_add_event_sysfs(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan)
{
int ret = 0, i, attrcount = 0;
@@ -414,89 +395,6 @@ error_ret:
return ret;
}
-static int iio_device_add_event_sysfs_old(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan)
-{
- int ret = 0, i, attrcount = 0;
- u64 mask = 0;
- char *postfix;
- if (!chan->event_mask)
- return 0;
-
- for_each_set_bit(i, &chan->event_mask, sizeof(chan->event_mask)*8) {
- postfix = kasprintf(GFP_KERNEL, "%s_%s_en",
- iio_ev_type_text[i/IIO_EV_DIR_MAX],
- iio_ev_dir_text[i%IIO_EV_DIR_MAX]);
- if (postfix == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- if (chan->modified)
- mask = IIO_MOD_EVENT_CODE(chan->type, 0, chan->channel2,
- i/IIO_EV_DIR_MAX,
- i%IIO_EV_DIR_MAX);
- else if (chan->differential)
- mask = IIO_EVENT_CODE(chan->type,
- 0, 0,
- i%IIO_EV_DIR_MAX,
- i/IIO_EV_DIR_MAX,
- 0,
- chan->channel,
- chan->channel2);
- else
- mask = IIO_UNMOD_EVENT_CODE(chan->type,
- chan->channel,
- i/IIO_EV_DIR_MAX,
- i%IIO_EV_DIR_MAX);
-
- ret = __iio_add_chan_devattr(postfix,
- chan,
- &iio_ev_state_show,
- iio_ev_state_store,
- mask,
- 0,
- &indio_dev->dev,
- &indio_dev->event_interface->
- dev_attr_list);
- kfree(postfix);
- if (ret)
- goto error_ret;
- attrcount++;
- postfix = kasprintf(GFP_KERNEL, "%s_%s_value",
- iio_ev_type_text[i/IIO_EV_DIR_MAX],
- iio_ev_dir_text[i%IIO_EV_DIR_MAX]);
- if (postfix == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- ret = __iio_add_chan_devattr(postfix, chan,
- iio_ev_value_show,
- iio_ev_value_store,
- mask,
- 0,
- &indio_dev->dev,
- &indio_dev->event_interface->
- dev_attr_list);
- kfree(postfix);
- if (ret)
- goto error_ret;
- attrcount++;
- }
- ret = attrcount;
-error_ret:
- return ret;
-}
-
-
-static int iio_device_add_event_sysfs(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan)
-{
- if (chan->event_mask)
- return iio_device_add_event_sysfs_old(indio_dev, chan);
- else
- return iio_device_add_event_sysfs_new(indio_dev, chan);
-}
-
static inline int __iio_add_event_config_attrs(struct iio_dev *indio_dev)
{
int j, ret, attrcount = 0;
@@ -517,8 +415,6 @@ static bool iio_check_for_dynamic_events(struct iio_dev *indio_dev)
int j;
for (j = 0; j < indio_dev->num_channels; j++) {
- if (indio_dev->channels[j].event_mask != 0)
- return true;
if (indio_dev->channels[j].num_event_specs != 0)
return true;
}
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index bf5e70a32d3..766fab24b72 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -55,15 +55,7 @@ static struct attribute *iio_trig_dev_attrs[] = {
&dev_attr_name.attr,
NULL,
};
-
-static struct attribute_group iio_trig_attr_group = {
- .attrs = iio_trig_dev_attrs,
-};
-
-static const struct attribute_group *iio_trig_attr_groups[] = {
- &iio_trig_attr_group,
- NULL
-};
+ATTRIBUTE_GROUPS(iio_trig_dev);
int iio_trigger_register(struct iio_trigger *trig_info)
{
@@ -318,7 +310,7 @@ static ssize_t iio_trigger_read_current(struct device *dev,
* iio_trigger_write_current() - trigger consumer sysfs set current trigger
*
* For trigger consumers the current_trigger interface allows the trigger
- * used for this device to be specified at run time based on the triggers
+ * used for this device to be specified at run time based on the trigger's
* name.
**/
static ssize_t iio_trigger_write_current(struct device *dev,
@@ -356,7 +348,7 @@ static ssize_t iio_trigger_write_current(struct device *dev,
indio_dev->trig = trig;
- if (oldtrig && indio_dev->trig != oldtrig)
+ if (oldtrig)
iio_trigger_put(oldtrig);
if (indio_dev->trig)
iio_trigger_get(indio_dev->trig);
@@ -403,7 +395,7 @@ static void iio_trig_release(struct device *device)
static struct device_type iio_trig_type = {
.release = iio_trig_release,
- .groups = iio_trig_attr_groups,
+ .groups = iio_trig_dev_groups,
};
static void iio_trig_subirqmask(struct irq_data *d)
@@ -506,6 +498,23 @@ static int devm_iio_trigger_match(struct device *dev, void *res, void *data)
return *r == data;
}
+/**
+ * devm_iio_trigger_alloc - Resource-managed iio_trigger_alloc()
+ * @dev: Device to allocate iio_trigger for
+ * @fmt: trigger name format. If it includes format
+ * specifiers, the additional arguments following
+ * format are formatted and inserted in the resulting
+ * string replacing their respective specifiers.
+ *
+ * Managed iio_trigger_alloc. iio_trigger allocated with this function is
+ * automatically freed on driver detach.
+ *
+ * If an iio_trigger allocated with this function needs to be freed separately,
+ * devm_iio_trigger_free() must be used.
+ *
+ * RETURNS:
+ * Pointer to allocated iio_trigger on success, NULL on failure.
+ */
struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
const char *fmt, ...)
{
@@ -532,6 +541,13 @@ struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
}
EXPORT_SYMBOL_GPL(devm_iio_trigger_alloc);
+/**
+ * devm_iio_trigger_free - Resource-managed iio_trigger_free()
+ * @dev: Device this iio_dev belongs to
+ * @iio_trig: the iio_trigger associated with the device
+ *
+ * Free iio_trigger allocated with devm_iio_trigger_alloc().
+ */
void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig)
{
int rc;
diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c
index 95c6fc81c2c..7134e8ada09 100644
--- a/drivers/iio/kfifo_buf.c
+++ b/drivers/iio/kfifo_buf.c
@@ -42,7 +42,6 @@ static int iio_request_update_kfifo(struct iio_buffer *r)
} else {
kfifo_reset_out(&buf->kf);
}
- r->stufftoread = false;
mutex_unlock(&buf->user_lock);
return ret;
@@ -108,7 +107,7 @@ static int iio_store_to_kfifo(struct iio_buffer *r,
ret = kfifo_in(&kf->kf, data, 1);
if (ret != 1)
return -EBUSY;
- r->stufftoread = true;
+
wake_up_interruptible_poll(&r->pollq, POLLIN | POLLRDNORM);
return 0;
@@ -127,13 +126,6 @@ static int iio_read_first_n_kfifo(struct iio_buffer *r,
ret = -EINVAL;
else
ret = kfifo_to_user(&kf->kf, buf, n, &copied);
-
- if (kfifo_is_empty(&kf->kf))
- r->stufftoread = false;
- /* verify it is still empty to avoid race */
- if (!kfifo_is_empty(&kf->kf))
- r->stufftoread = true;
-
mutex_unlock(&kf->user_lock);
if (ret < 0)
return ret;
@@ -141,6 +133,18 @@ static int iio_read_first_n_kfifo(struct iio_buffer *r,
return copied;
}
+static bool iio_kfifo_buf_data_available(struct iio_buffer *r)
+{
+ struct iio_kfifo *kf = iio_to_kfifo(r);
+ bool empty;
+
+ mutex_lock(&kf->user_lock);
+ empty = kfifo_is_empty(&kf->kf);
+ mutex_unlock(&kf->user_lock);
+
+ return !empty;
+}
+
static void iio_kfifo_buffer_release(struct iio_buffer *buffer)
{
struct iio_kfifo *kf = iio_to_kfifo(buffer);
@@ -153,6 +157,7 @@ static void iio_kfifo_buffer_release(struct iio_buffer *buffer)
static const struct iio_buffer_access_funcs kfifo_access_funcs = {
.store_to = &iio_store_to_kfifo,
.read_first_n = &iio_read_first_n_kfifo,
+ .data_available = iio_kfifo_buf_data_available,
.request_update = &iio_request_update_kfifo,
.get_bytes_per_datum = &iio_get_bytes_per_datum_kfifo,
.set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index a022f27c669..d12b2a0dbfb 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -27,6 +27,17 @@ config APDS9300
To compile this driver as a module, choose M here: the
module will be called apds9300.
+config CM32181
+ depends on I2C
+ tristate "CM32181 driver"
+ help
+ Say Y here if you use cm32181.
+ This option enables ambient light sensor using
+ Capella cm32181 device driver.
+
+ To compile this driver as a module, choose M here:
+ the module will be called cm32181.
+
config CM36651
depends on I2C
tristate "CM36651 driver"
diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile
index daa327f39e0..60e35ac07ff 100644
--- a/drivers/iio/light/Makefile
+++ b/drivers/iio/light/Makefile
@@ -5,6 +5,7 @@
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_ADJD_S311) += adjd_s311.o
obj-$(CONFIG_APDS9300) += apds9300.o
+obj-$(CONFIG_CM32181) += cm32181.o
obj-$(CONFIG_CM36651) += cm36651.o
obj-$(CONFIG_GP2AP020A00F) += gp2ap020a00f.o
obj-$(CONFIG_HID_SENSOR_ALS) += hid-sensor-als.o
diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c
index 83d15c5baf6..f3068477b46 100644
--- a/drivers/iio/light/adjd_s311.c
+++ b/drivers/iio/light/adjd_s311.c
@@ -155,7 +155,12 @@ done:
BIT(IIO_CHAN_INFO_INT_TIME), \
.channel2 = (IIO_MOD_LIGHT_##_color), \
.scan_index = (_scan_idx), \
- .scan_type = IIO_ST('u', 10, 16, 0), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 10, \
+ .storagebits = 16, \
+ .endianness = IIO_CPU, \
+ }, \
}
static const struct iio_chan_spec adjd_s311_channels[] = {
diff --git a/drivers/iio/light/apds9300.c b/drivers/iio/light/apds9300.c
index 51097bbd59c..9ddde0ca9c3 100644
--- a/drivers/iio/light/apds9300.c
+++ b/drivers/iio/light/apds9300.c
@@ -344,10 +344,10 @@ static const struct iio_info apds9300_info_no_irq = {
static const struct iio_info apds9300_info = {
.driver_module = THIS_MODULE,
.read_raw = apds9300_read_raw,
- .read_event_value_new = apds9300_read_thresh,
- .write_event_value_new = apds9300_write_thresh,
- .read_event_config_new = apds9300_read_interrupt_config,
- .write_event_config_new = apds9300_write_interrupt_config,
+ .read_event_value = apds9300_read_thresh,
+ .write_event_value = apds9300_write_thresh,
+ .read_event_config = apds9300_read_interrupt_config,
+ .write_event_config = apds9300_write_interrupt_config,
};
static const struct iio_event_spec apds9300_event_spec[] = {
diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c
new file mode 100644
index 00000000000..f17b4e6183c
--- /dev/null
+++ b/drivers/iio/light/cm32181.c
@@ -0,0 +1,379 @@
+/*
+ * Copyright (C) 2013 Capella Microsystems Inc.
+ * Author: Kevin Tsai <ktsai@capellamicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2, as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/regulator/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
+#include <linux/init.h>
+
+/* Registers Address */
+#define CM32181_REG_ADDR_CMD 0x00
+#define CM32181_REG_ADDR_ALS 0x04
+#define CM32181_REG_ADDR_STATUS 0x06
+#define CM32181_REG_ADDR_ID 0x07
+
+/* Number of Configurable Registers */
+#define CM32181_CONF_REG_NUM 0x01
+
+/* CMD register */
+#define CM32181_CMD_ALS_ENABLE 0x00
+#define CM32181_CMD_ALS_DISABLE 0x01
+#define CM32181_CMD_ALS_INT_EN 0x02
+
+#define CM32181_CMD_ALS_IT_SHIFT 6
+#define CM32181_CMD_ALS_IT_MASK (0x0F << CM32181_CMD_ALS_IT_SHIFT)
+#define CM32181_CMD_ALS_IT_DEFAULT (0x00 << CM32181_CMD_ALS_IT_SHIFT)
+
+#define CM32181_CMD_ALS_SM_SHIFT 11
+#define CM32181_CMD_ALS_SM_MASK (0x03 << CM32181_CMD_ALS_SM_SHIFT)
+#define CM32181_CMD_ALS_SM_DEFAULT (0x01 << CM32181_CMD_ALS_SM_SHIFT)
+
+#define CM32181_MLUX_PER_BIT 5 /* ALS_SM=01 IT=800ms */
+#define CM32181_MLUX_PER_BIT_BASE_IT 800000 /* Based on IT=800ms */
+#define CM32181_CALIBSCALE_DEFAULT 1000
+#define CM32181_CALIBSCALE_RESOLUTION 1000
+#define MLUX_PER_LUX 1000
+
+static const u8 cm32181_reg[CM32181_CONF_REG_NUM] = {
+ CM32181_REG_ADDR_CMD,
+};
+
+static const int als_it_bits[] = {12, 8, 0, 1, 2, 3};
+static const int als_it_value[] = {25000, 50000, 100000, 200000, 400000,
+ 800000};
+
+struct cm32181_chip {
+ struct i2c_client *client;
+ struct mutex lock;
+ u16 conf_regs[CM32181_CONF_REG_NUM];
+ int calibscale;
+};
+
+/**
+ * cm32181_reg_init() - Initialize CM32181 registers
+ * @cm32181: pointer of struct cm32181.
+ *
+ * Initialize CM32181 ambient light sensor register to default values.
+ *
+ * Return: 0 for success; otherwise for error code.
+ */
+static int cm32181_reg_init(struct cm32181_chip *cm32181)
+{
+ struct i2c_client *client = cm32181->client;
+ int i;
+ s32 ret;
+
+ ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ID);
+ if (ret < 0)
+ return ret;
+
+ /* check device ID */
+ if ((ret & 0xFF) != 0x81)
+ return -ENODEV;
+
+ /* Default Values */
+ cm32181->conf_regs[CM32181_REG_ADDR_CMD] = CM32181_CMD_ALS_ENABLE |
+ CM32181_CMD_ALS_IT_DEFAULT | CM32181_CMD_ALS_SM_DEFAULT;
+ cm32181->calibscale = CM32181_CALIBSCALE_DEFAULT;
+
+ /* Initialize registers*/
+ for (i = 0; i < CM32181_CONF_REG_NUM; i++) {
+ ret = i2c_smbus_write_word_data(client, cm32181_reg[i],
+ cm32181->conf_regs[i]);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * cm32181_read_als_it() - Get sensor integration time (ms)
+ * @cm32181: pointer of struct cm32181
+ * @val: pointer of int to load the als_it value.
+ *
+ * Report the current integartion time by millisecond.
+ *
+ * Return: IIO_VAL_INT for success, otherwise -EINVAL.
+ */
+static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val)
+{
+ u16 als_it;
+ int i;
+
+ als_it = cm32181->conf_regs[CM32181_REG_ADDR_CMD];
+ als_it &= CM32181_CMD_ALS_IT_MASK;
+ als_it >>= CM32181_CMD_ALS_IT_SHIFT;
+ for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {
+ if (als_it == als_it_bits[i]) {
+ *val = als_it_value[i];
+ return IIO_VAL_INT;
+ }
+ }
+
+ return -EINVAL;
+}
+
+/**
+ * cm32181_write_als_it() - Write sensor integration time
+ * @cm32181: pointer of struct cm32181.
+ * @val: integration time by millisecond.
+ *
+ * Convert integration time (ms) to sensor value.
+ *
+ * Return: i2c_smbus_write_word_data command return value.
+ */
+static int cm32181_write_als_it(struct cm32181_chip *cm32181, int val)
+{
+ struct i2c_client *client = cm32181->client;
+ u16 als_it;
+ int ret, i, n;
+
+ n = ARRAY_SIZE(als_it_value);
+ for (i = 0; i < n; i++)
+ if (val <= als_it_value[i])
+ break;
+ if (i >= n)
+ i = n - 1;
+
+ als_it = als_it_bits[i];
+ als_it <<= CM32181_CMD_ALS_IT_SHIFT;
+
+ mutex_lock(&cm32181->lock);
+ cm32181->conf_regs[CM32181_REG_ADDR_CMD] &=
+ ~CM32181_CMD_ALS_IT_MASK;
+ cm32181->conf_regs[CM32181_REG_ADDR_CMD] |=
+ als_it;
+ ret = i2c_smbus_write_word_data(client, CM32181_REG_ADDR_CMD,
+ cm32181->conf_regs[CM32181_REG_ADDR_CMD]);
+ mutex_unlock(&cm32181->lock);
+
+ return ret;
+}
+
+/**
+ * cm32181_get_lux() - report current lux value
+ * @cm32181: pointer of struct cm32181.
+ *
+ * Convert sensor raw data to lux. It depends on integration
+ * time and claibscale variable.
+ *
+ * Return: Positive value is lux, otherwise is error code.
+ */
+static int cm32181_get_lux(struct cm32181_chip *cm32181)
+{
+ struct i2c_client *client = cm32181->client;
+ int ret;
+ int als_it;
+ unsigned long lux;
+
+ ret = cm32181_read_als_it(cm32181, &als_it);
+ if (ret < 0)
+ return -EINVAL;
+
+ lux = CM32181_MLUX_PER_BIT;
+ lux *= CM32181_MLUX_PER_BIT_BASE_IT;
+ lux /= als_it;
+
+ ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ALS);
+ if (ret < 0)
+ return ret;
+
+ lux *= ret;
+ lux *= cm32181->calibscale;
+ lux /= CM32181_CALIBSCALE_RESOLUTION;
+ lux /= MLUX_PER_LUX;
+
+ if (lux > 0xFFFF)
+ lux = 0xFFFF;
+
+ return lux;
+}
+
+static int cm32181_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct cm32181_chip *cm32181 = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_PROCESSED:
+ ret = cm32181_get_lux(cm32181);
+ if (ret < 0)
+ return ret;
+ *val = ret;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_CALIBSCALE:
+ *val = cm32181->calibscale;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_INT_TIME:
+ ret = cm32181_read_als_it(cm32181, val);
+ return ret;
+ }
+
+ return -EINVAL;
+}
+
+static int cm32181_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask)
+{
+ struct cm32181_chip *cm32181 = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBSCALE:
+ cm32181->calibscale = val;
+ return val;
+ case IIO_CHAN_INFO_INT_TIME:
+ ret = cm32181_write_als_it(cm32181, val);
+ return ret;
+ }
+
+ return -EINVAL;
+}
+
+/**
+ * cm32181_get_it_available() - Get available ALS IT value
+ * @dev: pointer of struct device.
+ * @attr: pointer of struct device_attribute.
+ * @buf: pointer of return string buffer.
+ *
+ * Display the available integration time values by millisecond.
+ *
+ * Return: string length.
+ */
+static ssize_t cm32181_get_it_available(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int i, n, len;
+
+ n = ARRAY_SIZE(als_it_value);
+ for (i = 0, len = 0; i < n; i++)
+ len += sprintf(buf + len, "%d ", als_it_value[i]);
+ return len + sprintf(buf + len, "\n");
+}
+
+static const struct iio_chan_spec cm32181_channels[] = {
+ {
+ .type = IIO_LIGHT,
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE) |
+ BIT(IIO_CHAN_INFO_INT_TIME),
+ }
+};
+
+static IIO_DEVICE_ATTR(in_illuminance_integration_time_available,
+ S_IRUGO, cm32181_get_it_available, NULL, 0);
+
+static struct attribute *cm32181_attributes[] = {
+ &iio_dev_attr_in_illuminance_integration_time_available.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group cm32181_attribute_group = {
+ .attrs = cm32181_attributes
+};
+
+static const struct iio_info cm32181_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = &cm32181_read_raw,
+ .write_raw = &cm32181_write_raw,
+ .attrs = &cm32181_attribute_group,
+};
+
+static int cm32181_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct cm32181_chip *cm32181;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm32181));
+ if (!indio_dev) {
+ dev_err(&client->dev, "devm_iio_device_alloc failed\n");
+ return -ENOMEM;
+ }
+
+ cm32181 = iio_priv(indio_dev);
+ i2c_set_clientdata(client, indio_dev);
+ cm32181->client = client;
+
+ mutex_init(&cm32181->lock);
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->channels = cm32181_channels;
+ indio_dev->num_channels = ARRAY_SIZE(cm32181_channels);
+ indio_dev->info = &cm32181_info;
+ indio_dev->name = id->name;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ ret = cm32181_reg_init(cm32181);
+ if (ret) {
+ dev_err(&client->dev,
+ "%s: register init failed\n",
+ __func__);
+ return ret;
+ }
+
+ ret = iio_device_register(indio_dev);
+ if (ret) {
+ dev_err(&client->dev,
+ "%s: regist device failed\n",
+ __func__);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int cm32181_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+
+ iio_device_unregister(indio_dev);
+ return 0;
+}
+
+static const struct i2c_device_id cm32181_id[] = {
+ { "cm32181", 0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, cm32181_id);
+
+static const struct of_device_id cm32181_of_match[] = {
+ { .compatible = "capella,cm32181" },
+ { }
+};
+
+static struct i2c_driver cm32181_driver = {
+ .driver = {
+ .name = "cm32181",
+ .of_match_table = of_match_ptr(cm32181_of_match),
+ .owner = THIS_MODULE,
+ },
+ .id_table = cm32181_id,
+ .probe = cm32181_probe,
+ .remove = cm32181_remove,
+};
+
+module_i2c_driver(cm32181_driver);
+
+MODULE_AUTHOR("Kevin Tsai <ktsai@capellamicro.com>");
+MODULE_DESCRIPTION("CM32181 ambient light sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
index 0922e39b0ea..0a142af83e2 100644
--- a/drivers/iio/light/cm36651.c
+++ b/drivers/iio/light/cm36651.c
@@ -488,7 +488,11 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
}
static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
- u64 event_code, int *val)
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info,
+ int *val, int *val2)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
@@ -498,7 +502,11 @@ static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
}
static int cm36651_write_prox_thresh(struct iio_dev *indio_dev,
- u64 event_code, int val)
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info,
+ int val, int val2)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
struct i2c_client *client = cm36651->client;
@@ -520,7 +528,10 @@ static int cm36651_write_prox_thresh(struct iio_dev *indio_dev,
}
static int cm36651_write_prox_event_config(struct iio_dev *indio_dev,
- u64 event_code, int state)
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ int state)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
int cmd, ret = -EINVAL;
@@ -536,7 +547,9 @@ static int cm36651_write_prox_event_config(struct iio_dev *indio_dev,
}
static int cm36651_read_prox_event_config(struct iio_dev *indio_dev,
- u64 event_code)
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir)
{
struct cm36651_data *cm36651 = iio_priv(indio_dev);
int event_en;
@@ -559,12 +572,22 @@ static int cm36651_read_prox_event_config(struct iio_dev *indio_dev,
.channel2 = IIO_MOD_LIGHT_##_color, \
} \
+static const struct iio_event_spec cm36651_event_spec[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE) |
+ BIT(IIO_EV_INFO_ENABLE),
+ }
+};
+
static const struct iio_chan_spec cm36651_channels[] = {
{
.type = IIO_PROXIMITY,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_INT_TIME),
- .event_mask = IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER)
+ .event_spec = cm36651_event_spec,
+ .num_event_specs = ARRAY_SIZE(cm36651_event_spec),
},
CM36651_LIGHT_CHANNEL(RED, CM36651_LIGHT_CHANNEL_IDX_RED),
CM36651_LIGHT_CHANNEL(GREEN, CM36651_LIGHT_CHANNEL_IDX_GREEN),
@@ -693,7 +716,7 @@ static const struct of_device_id cm36651_of_match[] = {
static struct i2c_driver cm36651_driver = {
.driver = {
.name = "cm36651",
- .of_match_table = of_match_ptr(cm36651_of_match),
+ .of_match_table = cm36651_of_match,
.owner = THIS_MODULE,
},
.probe = cm36651_probe,
diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
index dc79835be30..5ea4a03c7e7 100644
--- a/drivers/iio/light/gp2ap020a00f.c
+++ b/drivers/iio/light/gp2ap020a00f.c
@@ -1388,10 +1388,10 @@ static const struct iio_chan_spec gp2ap020a00f_channels[] = {
static const struct iio_info gp2ap020a00f_info = {
.read_raw = &gp2ap020a00f_read_raw,
- .read_event_value_new = &gp2ap020a00f_read_event_val,
- .read_event_config_new = &gp2ap020a00f_read_event_config,
- .write_event_value_new = &gp2ap020a00f_write_event_val,
- .write_event_config_new = &gp2ap020a00f_write_event_config,
+ .read_event_value = &gp2ap020a00f_read_event_val,
+ .read_event_config = &gp2ap020a00f_read_event_config,
+ .write_event_value = &gp2ap020a00f_write_event_val,
+ .write_event_config = &gp2ap020a00f_write_event_config,
.driver_module = THIS_MODULE,
};
diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index 8e8b9d72285..621541fb10a 100644
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -229,6 +229,17 @@ static int als_parse_report(struct platform_device *pdev,
dev_dbg(&pdev->dev, "als %x:%x\n", st->als_illum.index,
st->als_illum.report_id);
+ /* Set Sensitivity field ids, when there is no individual modifier */
+ if (st->common_attributes.sensitivity.index < 0) {
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+ HID_USAGE_SENSOR_DATA_LIGHT,
+ &st->common_attributes.sensitivity);
+ dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+ st->common_attributes.sensitivity.index,
+ st->common_attributes.sensitivity.report_id);
+ }
return ret;
}
diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
index 45df2204614..887fecf1f9b 100644
--- a/drivers/iio/light/tcs3472.c
+++ b/drivers/iio/light/tcs3472.c
@@ -67,7 +67,12 @@ struct tcs3472_data {
.channel2 = IIO_MOD_LIGHT_##_color, \
.address = _addr, \
.scan_index = _si, \
- .scan_type = IIO_ST('u', 16, 16, 0), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 16, \
+ .storagebits = 16, \
+ .endianness = IIO_CPU, \
+ }, \
}
static const int tcs3472_agains[] = { 1, 4, 16, 60 };
diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
index 5e5d9dea22c..3d8110157f2 100644
--- a/drivers/iio/light/tsl2563.c
+++ b/drivers/iio/light/tsl2563.c
@@ -702,10 +702,10 @@ static const struct iio_info tsl2563_info = {
.driver_module = THIS_MODULE,
.read_raw = &tsl2563_read_raw,
.write_raw = &tsl2563_write_raw,
- .read_event_value_new = &tsl2563_read_thresh,
- .write_event_value_new = &tsl2563_write_thresh,
- .read_event_config_new = &tsl2563_read_interrupt_config,
- .write_event_config_new = &tsl2563_write_interrupt_config,
+ .read_event_value = &tsl2563_read_thresh,
+ .write_event_value = &tsl2563_write_thresh,
+ .read_event_config = &tsl2563_read_interrupt_config,
+ .write_event_config = &tsl2563_write_interrupt_config,
};
static int tsl2563_probe(struct i2c_client *client,
@@ -714,6 +714,7 @@ static int tsl2563_probe(struct i2c_client *client,
struct iio_dev *indio_dev;
struct tsl2563_chip *chip;
struct tsl2563_platform_data *pdata = client->dev.platform_data;
+ struct device_node *np = client->dev.of_node;
int err = 0;
u8 id = 0;
@@ -750,6 +751,9 @@ static int tsl2563_probe(struct i2c_client *client,
if (pdata)
chip->cover_comp_gain = pdata->cover_comp_gain;
+ else if (np)
+ of_property_read_u32(np, "amstaos,cover-comp-gain",
+ &chip->cover_comp_gain);
else
chip->cover_comp_gain = 1;
diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index ecb3341ef9c..d948c4778ba 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -56,7 +56,7 @@ static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
u8 rdy_mask, u8 data_reg, int *val)
{
int tries = 20;
- u16 buf;
+ __be16 buf;
int ret;
ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
@@ -179,13 +179,7 @@ static int vcnl4000_probe(struct i2c_client *client,
indio_dev->name = VCNL4000_DRV_NAME;
indio_dev->modes = INDIO_DIRECT_MODE;
- return iio_device_register(indio_dev);
-}
-
-static int vcnl4000_remove(struct i2c_client *client)
-{
- iio_device_unregister(i2c_get_clientdata(client));
- return 0;
+ return devm_iio_device_register(&client->dev, indio_dev);
}
static struct i2c_driver vcnl4000_driver = {
@@ -194,7 +188,6 @@ static struct i2c_driver vcnl4000_driver = {
.owner = THIS_MODULE,
},
.probe = vcnl4000_probe,
- .remove = vcnl4000_remove,
.id_table = vcnl4000_id,
};
diff --git a/drivers/iio/magnetometer/hid-sensor-magn-3d.c b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
index b26e1028a0a..6d162b7e7af 100644
--- a/drivers/iio/magnetometer/hid-sensor-magn-3d.c
+++ b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
@@ -263,6 +263,18 @@ static int magn_3d_parse_report(struct platform_device *pdev,
st->magn[1].index, st->magn[1].report_id,
st->magn[2].index, st->magn[2].report_id);
+ /* Set Sensitivity field ids, when there is no individual modifier */
+ if (st->common_attributes.sensitivity.index < 0) {
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+ HID_USAGE_SENSOR_DATA_ORIENTATION,
+ &st->common_attributes.sensitivity);
+ dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+ st->common_attributes.sensitivity.index,
+ st->common_attributes.sensitivity.report_id);
+ }
+
return ret;
}
diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c
index becf5449696..4b65b6d3bdb 100644
--- a/drivers/iio/magnetometer/mag3110.c
+++ b/drivers/iio/magnetometer/mag3110.c
@@ -266,7 +266,11 @@ static const struct iio_chan_spec mag3110_channels[] = {
.type = IIO_TEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
.scan_index = 3,
- .scan_type = IIO_ST('s', 8, 8, 0),
+ .scan_type = {
+ .sign = 's',
+ .realbits = 8,
+ .storagebits = 8,
+ },
},
IIO_CHAN_SOFT_TIMESTAMP(4),
};
diff --git a/drivers/iio/orientation/Kconfig b/drivers/iio/orientation/Kconfig
new file mode 100644
index 00000000000..58c62c837e1
--- /dev/null
+++ b/drivers/iio/orientation/Kconfig
@@ -0,0 +1,19 @@
+#
+# Inclinometer sensors
+#
+# When adding new entries keep the list in alphabetical order
+
+menu "Inclinometer sensors"
+
+config HID_SENSOR_INCLINOMETER_3D
+ depends on HID_SENSOR_HUB
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ select HID_SENSOR_IIO_COMMON
+ select HID_SENSOR_IIO_TRIGGER
+ tristate "HID Inclinometer 3D"
+ help
+ Say yes here to build support for the HID SENSOR
+ Inclinometer 3D.
+
+endmenu
diff --git a/drivers/iio/orientation/Makefile b/drivers/iio/orientation/Makefile
new file mode 100644
index 00000000000..2c97572ee91
--- /dev/null
+++ b/drivers/iio/orientation/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for industrial I/O Inclinometer sensor drivers
+#
+
+# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_HID_SENSOR_INCLINOMETER_3D) += hid-sensor-incl-3d.o
diff --git a/drivers/iio/orientation/hid-sensor-incl-3d.c b/drivers/iio/orientation/hid-sensor-incl-3d.c
new file mode 100644
index 00000000000..070feab08fa
--- /dev/null
+++ b/drivers/iio/orientation/hid-sensor-incl-3d.c
@@ -0,0 +1,428 @@
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2013, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/hid-sensor-hub.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include "../common/hid-sensors/hid-sensor-trigger.h"
+
+enum incl_3d_channel {
+ CHANNEL_SCAN_INDEX_X,
+ CHANNEL_SCAN_INDEX_Y,
+ CHANNEL_SCAN_INDEX_Z,
+ INCLI_3D_CHANNEL_MAX,
+};
+
+struct incl_3d_state {
+ struct hid_sensor_hub_callbacks callbacks;
+ struct hid_sensor_common common_attributes;
+ struct hid_sensor_hub_attribute_info incl[INCLI_3D_CHANNEL_MAX];
+ u32 incl_val[INCLI_3D_CHANNEL_MAX];
+};
+
+static const u32 incl_3d_addresses[INCLI_3D_CHANNEL_MAX] = {
+ HID_USAGE_SENSOR_ORIENT_TILT_X,
+ HID_USAGE_SENSOR_ORIENT_TILT_Y,
+ HID_USAGE_SENSOR_ORIENT_TILT_Z
+};
+
+/* Channel definitions */
+static const struct iio_chan_spec incl_3d_channels[] = {
+ {
+ .type = IIO_INCLI,
+ .modified = 1,
+ .channel2 = IIO_MOD_X,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+ BIT(IIO_CHAN_INFO_HYSTERESIS),
+ .scan_index = CHANNEL_SCAN_INDEX_X,
+ }, {
+ .type = IIO_INCLI,
+ .modified = 1,
+ .channel2 = IIO_MOD_Y,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+ BIT(IIO_CHAN_INFO_HYSTERESIS),
+ .scan_index = CHANNEL_SCAN_INDEX_Y,
+ }, {
+ .type = IIO_INCLI,
+ .modified = 1,
+ .channel2 = IIO_MOD_Z,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+ BIT(IIO_CHAN_INFO_HYSTERESIS),
+ .scan_index = CHANNEL_SCAN_INDEX_Z,
+ }
+};
+
+/* Adjust channel real bits based on report descriptor */
+static void incl_3d_adjust_channel_bit_mask(struct iio_chan_spec *chan,
+ int size)
+{
+ chan->scan_type.sign = 's';
+ /* Real storage bits will change based on the report desc. */
+ chan->scan_type.realbits = size * 8;
+ /* Maximum size of a sample to capture is u32 */
+ chan->scan_type.storagebits = sizeof(u32) * 8;
+}
+
+/* Channel read_raw handler */
+static int incl_3d_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2,
+ long mask)
+{
+ struct incl_3d_state *incl_state = iio_priv(indio_dev);
+ int report_id = -1;
+ u32 address;
+ int ret_type;
+
+ *val = 0;
+ *val2 = 0;
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ report_id =
+ incl_state->incl[chan->scan_index].report_id;
+ address = incl_3d_addresses[chan->scan_index];
+ if (report_id >= 0)
+ *val = sensor_hub_input_attr_get_raw_value(
+ incl_state->common_attributes.hsdev,
+ HID_USAGE_SENSOR_INCLINOMETER_3D, address,
+ report_id);
+ else {
+ return -EINVAL;
+ }
+ ret_type = IIO_VAL_INT;
+ break;
+ case IIO_CHAN_INFO_SCALE:
+ *val = incl_state->incl[CHANNEL_SCAN_INDEX_X].units;
+ ret_type = IIO_VAL_INT;
+ break;
+ case IIO_CHAN_INFO_OFFSET:
+ *val = hid_sensor_convert_exponent(
+ incl_state->incl[CHANNEL_SCAN_INDEX_X].unit_expo);
+ ret_type = IIO_VAL_INT;
+ break;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ ret_type = hid_sensor_read_samp_freq_value(
+ &incl_state->common_attributes, val, val2);
+ break;
+ case IIO_CHAN_INFO_HYSTERESIS:
+ ret_type = hid_sensor_read_raw_hyst_value(
+ &incl_state->common_attributes, val, val2);
+ break;
+ default:
+ ret_type = -EINVAL;
+ break;
+ }
+
+ return ret_type;
+}
+
+/* Channel write_raw handler */
+static int incl_3d_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val,
+ int val2,
+ long mask)
+{
+ struct incl_3d_state *incl_state = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ ret = hid_sensor_write_samp_freq_value(
+ &incl_state->common_attributes, val, val2);
+ break;
+ case IIO_CHAN_INFO_HYSTERESIS:
+ ret = hid_sensor_write_raw_hyst_value(
+ &incl_state->common_attributes, val, val2);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct iio_info incl_3d_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = &incl_3d_read_raw,
+ .write_raw = &incl_3d_write_raw,
+};
+
+/* Function to push data to buffer */
+static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
+{
+ dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
+ iio_push_to_buffers(indio_dev, (u8 *)data);
+}
+
+/* Callback handler to send event after all samples are received and captured */
+static int incl_3d_proc_event(struct hid_sensor_hub_device *hsdev,
+ unsigned usage_id,
+ void *priv)
+{
+ struct iio_dev *indio_dev = platform_get_drvdata(priv);
+ struct incl_3d_state *incl_state = iio_priv(indio_dev);
+
+ dev_dbg(&indio_dev->dev, "incl_3d_proc_event [%d]\n",
+ incl_state->common_attributes.data_ready);
+ if (incl_state->common_attributes.data_ready)
+ hid_sensor_push_data(indio_dev,
+ (u8 *)incl_state->incl_val,
+ sizeof(incl_state->incl_val));
+
+ return 0;
+}
+
+/* Capture samples in local storage */
+static int incl_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
+ unsigned usage_id,
+ size_t raw_len, char *raw_data,
+ void *priv)
+{
+ struct iio_dev *indio_dev = platform_get_drvdata(priv);
+ struct incl_3d_state *incl_state = iio_priv(indio_dev);
+ int ret = 0;
+
+ switch (usage_id) {
+ case HID_USAGE_SENSOR_ORIENT_TILT_X:
+ incl_state->incl_val[CHANNEL_SCAN_INDEX_X] = *(u32 *)raw_data;
+ break;
+ case HID_USAGE_SENSOR_ORIENT_TILT_Y:
+ incl_state->incl_val[CHANNEL_SCAN_INDEX_Y] = *(u32 *)raw_data;
+ break;
+ case HID_USAGE_SENSOR_ORIENT_TILT_Z:
+ incl_state->incl_val[CHANNEL_SCAN_INDEX_Z] = *(u32 *)raw_data;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+/* Parse report which is specific to an usage id*/
+static int incl_3d_parse_report(struct platform_device *pdev,
+ struct hid_sensor_hub_device *hsdev,
+ struct iio_chan_spec *channels,
+ unsigned usage_id,
+ struct incl_3d_state *st)
+{
+ int ret;
+
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_INPUT_REPORT,
+ usage_id,
+ HID_USAGE_SENSOR_ORIENT_TILT_X,
+ &st->incl[CHANNEL_SCAN_INDEX_X]);
+ if (ret)
+ return ret;
+ incl_3d_adjust_channel_bit_mask(&channels[CHANNEL_SCAN_INDEX_X],
+ st->incl[CHANNEL_SCAN_INDEX_X].size);
+
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_INPUT_REPORT,
+ usage_id,
+ HID_USAGE_SENSOR_ORIENT_TILT_Y,
+ &st->incl[CHANNEL_SCAN_INDEX_Y]);
+ if (ret)
+ return ret;
+ incl_3d_adjust_channel_bit_mask(&channels[CHANNEL_SCAN_INDEX_Y],
+ st->incl[CHANNEL_SCAN_INDEX_Y].size);
+
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_INPUT_REPORT,
+ usage_id,
+ HID_USAGE_SENSOR_ORIENT_TILT_Z,
+ &st->incl[CHANNEL_SCAN_INDEX_Z]);
+ if (ret)
+ return ret;
+ incl_3d_adjust_channel_bit_mask(&channels[CHANNEL_SCAN_INDEX_Z],
+ st->incl[CHANNEL_SCAN_INDEX_Z].size);
+
+ dev_dbg(&pdev->dev, "incl_3d %x:%x, %x:%x, %x:%x\n",
+ st->incl[0].index,
+ st->incl[0].report_id,
+ st->incl[1].index, st->incl[1].report_id,
+ st->incl[2].index, st->incl[2].report_id);
+
+ /* Set Sensitivity field ids, when there is no individual modifier */
+ if (st->common_attributes.sensitivity.index < 0) {
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+ HID_USAGE_SENSOR_DATA_ORIENTATION,
+ &st->common_attributes.sensitivity);
+ dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+ st->common_attributes.sensitivity.index,
+ st->common_attributes.sensitivity.report_id);
+ }
+ return ret;
+}
+
+/* Function to initialize the processing for usage id */
+static int hid_incl_3d_probe(struct platform_device *pdev)
+{
+ int ret;
+ static char *name = "incli_3d";
+ struct iio_dev *indio_dev;
+ struct incl_3d_state *incl_state;
+ struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+ struct iio_chan_spec *channels;
+
+ indio_dev = devm_iio_device_alloc(&pdev->dev,
+ sizeof(struct incl_3d_state));
+ if (indio_dev == NULL)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, indio_dev);
+
+ incl_state = iio_priv(indio_dev);
+ incl_state->common_attributes.hsdev = hsdev;
+ incl_state->common_attributes.pdev = pdev;
+
+ ret = hid_sensor_parse_common_attributes(hsdev,
+ HID_USAGE_SENSOR_INCLINOMETER_3D,
+ &incl_state->common_attributes);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to setup common attributes\n");
+ return ret;
+ }
+
+ channels = kmemdup(incl_3d_channels, sizeof(incl_3d_channels),
+ GFP_KERNEL);
+ if (!channels) {
+ dev_err(&pdev->dev, "failed to duplicate channels\n");
+ return -ENOMEM;
+ }
+
+ ret = incl_3d_parse_report(pdev, hsdev, channels,
+ HID_USAGE_SENSOR_INCLINOMETER_3D, incl_state);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to setup attributes\n");
+ goto error_free_dev_mem;
+ }
+
+ indio_dev->channels = channels;
+ indio_dev->num_channels = ARRAY_SIZE(incl_3d_channels);
+ indio_dev->dev.parent = &pdev->dev;
+ indio_dev->info = &incl_3d_info;
+ indio_dev->name = name;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+ NULL, NULL);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
+ goto error_free_dev_mem;
+ }
+ incl_state->common_attributes.data_ready = false;
+ ret = hid_sensor_setup_trigger(indio_dev, name,
+ &incl_state->common_attributes);
+ if (ret) {
+ dev_err(&pdev->dev, "trigger setup failed\n");
+ goto error_unreg_buffer_funcs;
+ }
+
+ ret = iio_device_register(indio_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "device register failed\n");
+ goto error_remove_trigger;
+ }
+
+ incl_state->callbacks.send_event = incl_3d_proc_event;
+ incl_state->callbacks.capture_sample = incl_3d_capture_sample;
+ incl_state->callbacks.pdev = pdev;
+ ret = sensor_hub_register_callback(hsdev,
+ HID_USAGE_SENSOR_INCLINOMETER_3D,
+ &incl_state->callbacks);
+ if (ret) {
+ dev_err(&pdev->dev, "callback reg failed\n");
+ goto error_iio_unreg;
+ }
+
+ return 0;
+
+error_iio_unreg:
+ iio_device_unregister(indio_dev);
+error_remove_trigger:
+ hid_sensor_remove_trigger(&incl_state->common_attributes);
+error_unreg_buffer_funcs:
+ iio_triggered_buffer_cleanup(indio_dev);
+error_free_dev_mem:
+ kfree(indio_dev->channels);
+ return ret;
+}
+
+/* Function to deinitialize the processing for usage id */
+static int hid_incl_3d_remove(struct platform_device *pdev)
+{
+ struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+ struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+ struct incl_3d_state *incl_state = iio_priv(indio_dev);
+
+ sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_INCLINOMETER_3D);
+ iio_device_unregister(indio_dev);
+ hid_sensor_remove_trigger(&incl_state->common_attributes);
+ iio_triggered_buffer_cleanup(indio_dev);
+ kfree(indio_dev->channels);
+
+ return 0;
+}
+
+static struct platform_device_id hid_incl_3d_ids[] = {
+ {
+ /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
+ .name = "HID-SENSOR-200086",
+ },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, hid_incl_3d_ids);
+
+static struct platform_driver hid_incl_3d_platform_driver = {
+ .id_table = hid_incl_3d_ids,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = hid_incl_3d_probe,
+ .remove = hid_incl_3d_remove,
+};
+module_platform_driver(hid_incl_3d_platform_driver);
+
+MODULE_DESCRIPTION("HID Sensor Inclinometer 3D");
+MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index 4f2e0f9bad8..a8b9cae5c17 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -5,6 +5,18 @@
menu "Pressure sensors"
+config MPL3115
+ tristate "Freescale MPL3115A2 pressure sensor driver"
+ depends on I2C
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ help
+ Say yes here to build support for the Freescale MPL3115A2
+ pressure sensor / altimeter.
+
+ To compile this driver as a module, choose M here: the module
+ will be called mpl3115.
+
config IIO_ST_PRESS
tristate "STMicroelectronics pressure sensor Driver"
depends on (I2C || SPI_MASTER) && SYSFS
diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
index be71464c275..42bb9fcf543 100644
--- a/drivers/iio/pressure/Makefile
+++ b/drivers/iio/pressure/Makefile
@@ -3,6 +3,7 @@
#
# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_MPL3115) += mpl3115.o
obj-$(CONFIG_IIO_ST_PRESS) += st_pressure.o
st_pressure-y := st_pressure_core.o
st_pressure-$(CONFIG_IIO_BUFFER) += st_pressure_buffer.o
diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
new file mode 100644
index 00000000000..ac8c8ab723e
--- /dev/null
+++ b/drivers/iio/pressure/mpl3115.c
@@ -0,0 +1,329 @@
+/*
+ * mpl3115.c - Support for Freescale MPL3115A2 pressure/temperature sensor
+ *
+ * Copyright (c) 2013 Peter Meerwald <pmeerw@pmeerw.net>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * (7-bit I2C slave address 0x60)
+ *
+ * TODO: FIFO buffer, altimeter mode, oversampling, continuous mode,
+ * interrupts, user offset correction, raw mode
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/delay.h>
+
+#define MPL3115_STATUS 0x00
+#define MPL3115_OUT_PRESS 0x01 /* MSB first, 20 bit */
+#define MPL3115_OUT_TEMP 0x04 /* MSB first, 12 bit */
+#define MPL3115_WHO_AM_I 0x0c
+#define MPL3115_CTRL_REG1 0x26
+
+#define MPL3115_DEVICE_ID 0xc4
+
+#define MPL3115_STATUS_PRESS_RDY BIT(2)
+#define MPL3115_STATUS_TEMP_RDY BIT(1)
+
+#define MPL3115_CTRL_RESET BIT(2) /* software reset */
+#define MPL3115_CTRL_OST BIT(1) /* initiate measurement */
+#define MPL3115_CTRL_ACTIVE BIT(0) /* continuous measurement */
+#define MPL3115_CTRL_OS_258MS (BIT(5) | BIT(4)) /* 64x oversampling */
+
+struct mpl3115_data {
+ struct i2c_client *client;
+ struct mutex lock;
+ u8 ctrl_reg1;
+};
+
+static int mpl3115_request(struct mpl3115_data *data)
+{
+ int ret, tries = 15;
+
+ /* trigger measurement */
+ ret = i2c_smbus_write_byte_data(data->client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1 | MPL3115_CTRL_OST);
+ if (ret < 0)
+ return ret;
+
+ while (tries-- > 0) {
+ ret = i2c_smbus_read_byte_data(data->client, MPL3115_CTRL_REG1);
+ if (ret < 0)
+ return ret;
+ /* wait for data ready, i.e. OST cleared */
+ if (!(ret & MPL3115_CTRL_OST))
+ break;
+ msleep(20);
+ }
+
+ if (tries < 0) {
+ dev_err(&data->client->dev, "data not ready\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int mpl3115_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct mpl3115_data *data = iio_priv(indio_dev);
+ s32 tmp = 0;
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ if (iio_buffer_enabled(indio_dev))
+ return -EBUSY;
+
+ switch (chan->type) {
+ case IIO_PRESSURE: /* in 0.25 pascal / LSB */
+ mutex_lock(&data->lock);
+ ret = mpl3115_request(data);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ return ret;
+ }
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_PRESS, 3, (u8 *) &tmp);
+ mutex_unlock(&data->lock);
+ if (ret < 0)
+ return ret;
+ *val = sign_extend32(be32_to_cpu(tmp) >> 12, 23);
+ return IIO_VAL_INT;
+ case IIO_TEMP: /* in 0.0625 celsius / LSB */
+ mutex_lock(&data->lock);
+ ret = mpl3115_request(data);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ return ret;
+ }
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_TEMP, 2, (u8 *) &tmp);
+ mutex_unlock(&data->lock);
+ if (ret < 0)
+ return ret;
+ *val = sign_extend32(be32_to_cpu(tmp) >> 20, 15);
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_PRESSURE:
+ *val = 0;
+ *val2 = 250; /* want kilopascal */
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_TEMP:
+ *val = 0;
+ *val2 = 62500;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+ }
+ return -EINVAL;
+}
+
+static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct mpl3115_data *data = iio_priv(indio_dev);
+ u8 buffer[16]; /* 32-bit channel + 16-bit channel + padding + ts */
+ int ret, pos = 0;
+
+ mutex_lock(&data->lock);
+ ret = mpl3115_request(data);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ goto done;
+ }
+
+ memset(buffer, 0, sizeof(buffer));
+ if (test_bit(0, indio_dev->active_scan_mask)) {
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_PRESS, 3, &buffer[pos]);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ goto done;
+ }
+ pos += 4;
+ }
+
+ if (test_bit(1, indio_dev->active_scan_mask)) {
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_TEMP, 2, &buffer[pos]);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ goto done;
+ }
+ }
+ mutex_unlock(&data->lock);
+
+ iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+ iio_get_time_ns());
+
+done:
+ iio_trigger_notify_done(indio_dev->trig);
+ return IRQ_HANDLED;
+}
+
+static const struct iio_chan_spec mpl3115_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 20,
+ .storagebits = 32,
+ .shift = 12,
+ .endianness = IIO_BE,
+ }
+ },
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 12,
+ .storagebits = 16,
+ .shift = 4,
+ .endianness = IIO_BE,
+ }
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(2),
+};
+
+static const struct iio_info mpl3115_info = {
+ .read_raw = &mpl3115_read_raw,
+ .driver_module = THIS_MODULE,
+};
+
+static int mpl3115_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct mpl3115_data *data;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, MPL3115_WHO_AM_I);
+ if (ret < 0)
+ return ret;
+ if (ret != MPL3115_DEVICE_ID)
+ return -ENODEV;
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(indio_dev);
+ data->client = client;
+ mutex_init(&data->lock);
+
+ i2c_set_clientdata(client, indio_dev);
+ indio_dev->info = &mpl3115_info;
+ indio_dev->name = id->name;
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = mpl3115_channels;
+ indio_dev->num_channels = ARRAY_SIZE(mpl3115_channels);
+
+ /* software reset, I2C transfer is aborted (fails) */
+ i2c_smbus_write_byte_data(client, MPL3115_CTRL_REG1,
+ MPL3115_CTRL_RESET);
+ msleep(50);
+
+ data->ctrl_reg1 = MPL3115_CTRL_OS_258MS;
+ ret = i2c_smbus_write_byte_data(client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1);
+ if (ret < 0)
+ return ret;
+
+ ret = iio_triggered_buffer_setup(indio_dev, NULL,
+ mpl3115_trigger_handler, NULL);
+ if (ret < 0)
+ return ret;
+
+ ret = iio_device_register(indio_dev);
+ if (ret < 0)
+ goto buffer_cleanup;
+ return 0;
+
+buffer_cleanup:
+ iio_triggered_buffer_cleanup(indio_dev);
+ return ret;
+}
+
+static int mpl3115_standby(struct mpl3115_data *data)
+{
+ return i2c_smbus_write_byte_data(data->client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1 & ~MPL3115_CTRL_ACTIVE);
+}
+
+static int mpl3115_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+
+ iio_device_unregister(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
+ mpl3115_standby(iio_priv(indio_dev));
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mpl3115_suspend(struct device *dev)
+{
+ return mpl3115_standby(iio_priv(i2c_get_clientdata(
+ to_i2c_client(dev))));
+}
+
+static int mpl3115_resume(struct device *dev)
+{
+ struct mpl3115_data *data = iio_priv(i2c_get_clientdata(
+ to_i2c_client(dev)));
+
+ return i2c_smbus_write_byte_data(data->client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1);
+}
+
+static SIMPLE_DEV_PM_OPS(mpl3115_pm_ops, mpl3115_suspend, mpl3115_resume);
+#define MPL3115_PM_OPS (&mpl3115_pm_ops)
+#else
+#define MPL3115_PM_OPS NULL
+#endif
+
+static const struct i2c_device_id mpl3115_id[] = {
+ { "mpl3115", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, mpl3115_id);
+
+static struct i2c_driver mpl3115_driver = {
+ .driver = {
+ .name = "mpl3115",
+ .pm = MPL3115_PM_OPS,
+ },
+ .probe = mpl3115_probe,
+ .remove = mpl3115_remove,
+ .id_table = mpl3115_id,
+};
+module_i2c_driver(mpl3115_driver);
+
+MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
+MODULE_DESCRIPTION("Freescale MPL3115 pressure/temperature driver");
+MODULE_LICENSE("GPL");