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Date: Wed, 6 Jul 2011 11:56:26 -0700
From: Bryan Freed <bfreed@...omium.org>
To: linux-kernel@...r.kernel.org
Cc: jic23@....ac.uk, gregkh@...e.de, rklein@...dia.com,
linux-iio@...r.kernel.org, Bryan Freed <bfreed@...omium.org>
Subject: [PATCH 3/3] staging:iio:light:isl29018: Convert some of the isl29018 driver to the new IIO_CHAN framework.
Remove the driver's get_sensor_data() interfaces and replace them with
IIO_CHAN channels. This converts 4 files to the new framework.
Driver ABI change: The intensity_infrared_raw file is now intensity_ir_raw.
Signed-off-by: Bryan Freed <bfreed@...omium.org>
---
drivers/staging/iio/light/isl29018.c | 159 +++++++++++++++-------------------
1 files changed, 69 insertions(+), 90 deletions(-)
diff --git a/drivers/staging/iio/light/isl29018.c b/drivers/staging/iio/light/isl29018.c
index cd88311..aac4e39 100644
--- a/drivers/staging/iio/light/isl29018.c
+++ b/drivers/staging/iio/light/isl29018.c
@@ -225,74 +225,7 @@ static int isl29018_read_proximity_ir(struct i2c_client *client, int scheme,
return 0;
}
-static ssize_t get_sensor_data(struct device *dev, char *buf, int mode)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct isl29018_chip *chip = indio_dev->dev_data;
- struct i2c_client *client = chip->client;
- int value = 0;
- int status;
-
- mutex_lock(&chip->lock);
- switch (mode) {
- case COMMMAND1_OPMODE_PROX_ONCE:
- status = isl29018_read_proximity_ir(client,
- chip->prox_scheme, &value);
- break;
-
- case COMMMAND1_OPMODE_ALS_ONCE:
- status = isl29018_read_lux(client, &value);
- break;
-
- case COMMMAND1_OPMODE_IR_ONCE:
- status = isl29018_read_ir(client, &value);
- break;
-
- default:
- dev_err(&client->dev, "Mode %d is not supported\n", mode);
- mutex_unlock(&chip->lock);
- return -EBUSY;
- }
- if (status < 0) {
- dev_err(&client->dev, "Error in Reading data");
- mutex_unlock(&chip->lock);
- return status;
- }
-
- mutex_unlock(&chip->lock);
-
- return sprintf(buf, "%d\n", value);
-}
-
/* Sysfs interface */
-/* lux_scale */
-static ssize_t show_lux_scale(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct isl29018_chip *chip = indio_dev->dev_data;
-
- return sprintf(buf, "%d\n", chip->lux_scale);
-}
-
-static ssize_t store_lux_scale(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct isl29018_chip *chip = indio_dev->dev_data;
- unsigned long lval;
-
- lval = simple_strtoul(buf, NULL, 10);
- if (lval == 0)
- return -EINVAL;
-
- mutex_lock(&chip->lock);
- chip->lux_scale = lval;
- mutex_unlock(&chip->lock);
-
- return count;
-}
-
/* range */
static ssize_t show_range(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -410,27 +343,78 @@ static ssize_t store_prox_infrared_supression(struct device *dev,
return count;
}
-/* Read lux */
-static ssize_t show_lux(struct device *dev,
- struct device_attribute *devattr, char *buf)
+/* Channel IO */
+static int isl29018_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val,
+ int val2,
+ long mask)
{
- return get_sensor_data(dev, buf, COMMMAND1_OPMODE_ALS_ONCE);
-}
+ struct isl29018_chip *chip = indio_dev->dev_data;
+ int ret = -EINVAL;
-/* Read ir */
-static ssize_t show_ir(struct device *dev,
- struct device_attribute *devattr, char *buf)
-{
- return get_sensor_data(dev, buf, COMMMAND1_OPMODE_IR_ONCE);
+ mutex_lock(&chip->lock);
+ if (mask == (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE) &&
+ chan->type == IIO_LIGHT) {
+ chip->lux_scale = val;
+ ret = 0;
+ }
+ mutex_unlock(&chip->lock);
+
+ return 0;
}
-/* Read nearest ir */
-static ssize_t show_proxim_ir(struct device *dev,
- struct device_attribute *devattr, char *buf)
+static int isl29018_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long mask)
{
- return get_sensor_data(dev, buf, COMMMAND1_OPMODE_PROX_ONCE);
+ int ret = -EINVAL;
+ struct isl29018_chip *chip = indio_dev->dev_data;
+ struct i2c_client *client = chip->client;
+
+ mutex_lock(&chip->lock);
+ switch (mask) {
+ case 0:
+ switch (chan->type) {
+ case IIO_LIGHT:
+ ret = isl29018_read_lux(client, val);
+ break;
+ case IIO_INTENSITY:
+ ret = isl29018_read_ir(client, val);
+ break;
+ case IIO_PROXIMITY:
+ ret = isl29018_read_proximity_ir(client,
+ chip->prox_scheme, val);
+ break;
+ default:
+ break;
+ }
+ if (!ret)
+ ret = IIO_VAL_INT;
+ break;
+ case (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE):
+ if (chan->type == IIO_LIGHT) {
+ *val = chip->lux_scale;
+ ret = IIO_VAL_INT;
+ }
+ break;
+ default:
+ break;
+ }
+ mutex_unlock(&chip->lock);
+ return ret;
}
+#define LIGHT_INFO_MASK (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE)
+static const struct iio_chan_spec isl29018_channels[] = {
+ IIO_CHAN(IIO_LIGHT, 0, 1, 1, NULL, 0, 0, LIGHT_INFO_MASK,
+ 0, 0, {}, 0),
+ IIO_CHAN(IIO_INTENSITY, 1, 0, 0, NULL, 0, 1, 0, 0, 0, {}, 0),
+ IIO_CHAN(IIO_PROXIMITY, 0, 0, 0, NULL, 0, 0, 0, 0, 0, {}, 0),
+};
+
static IIO_DEVICE_ATTR(range, S_IRUGO | S_IWUSR, show_range, store_range, 0);
static IIO_CONST_ATTR(range_available, "1000 4000 16000 64000");
static IIO_CONST_ATTR(adc_resolution_available, "4 8 12 16");
@@ -440,11 +424,6 @@ static IIO_DEVICE_ATTR(proximity_on_chip_ambient_infrared_supression,
S_IRUGO | S_IWUSR,
show_prox_infrared_supression,
store_prox_infrared_supression, 0);
-static IIO_DEVICE_ATTR(illuminance0_input, S_IRUGO, show_lux, NULL, 0);
-static IIO_DEVICE_ATTR(illuminance0_calibscale, S_IRUGO | S_IWUSR,
- show_lux_scale, store_lux_scale, 0);
-static IIO_DEVICE_ATTR(intensity_infrared_raw, S_IRUGO, show_ir, NULL, 0);
-static IIO_DEVICE_ATTR(proximity_raw, S_IRUGO, show_proxim_ir, NULL, 0);
#define ISL29018_DEV_ATTR(name) (&iio_dev_attr_##name.dev_attr.attr)
#define ISL29018_CONST_ATTR(name) (&iio_const_attr_##name.dev_attr.attr)
@@ -454,10 +433,6 @@ static struct attribute *isl29018_attributes[] = {
ISL29018_DEV_ATTR(adc_resolution),
ISL29018_CONST_ATTR(adc_resolution_available),
ISL29018_DEV_ATTR(proximity_on_chip_ambient_infrared_supression),
- ISL29018_DEV_ATTR(illuminance0_input),
- ISL29018_DEV_ATTR(illuminance0_calibscale),
- ISL29018_DEV_ATTR(intensity_infrared_raw),
- ISL29018_DEV_ATTR(proximity_raw),
NULL
};
@@ -490,6 +465,8 @@ static int isl29018_chip_init(struct i2c_client *client)
static const struct iio_info isl29108_info = {
.attrs = &isl29108_group,
.driver_module = THIS_MODULE,
+ .read_raw = &isl29018_read_raw,
+ .write_raw = &isl29018_write_raw,
};
static int __devinit isl29018_probe(struct i2c_client *client,
@@ -524,6 +501,8 @@ static int __devinit isl29018_probe(struct i2c_client *client,
goto exit_free;
}
chip->indio_dev->info = &isl29108_info;
+ chip->indio_dev->channels = isl29018_channels;
+ chip->indio_dev->num_channels = ARRAY_SIZE(isl29018_channels);
chip->indio_dev->name = id->name;
chip->indio_dev->dev.parent = &client->dev;
chip->indio_dev->dev_data = (void *)(chip);
--
1.7.3.1
--
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