From: Jonathan Cameron <jic23@cam.ac.uk>
To: linux-iio@vger.kernel.org
Cc: arnd@arndb.de, Jonathan Cameron <jic23@cam.ac.uk>
Subject: [PATCH 5/7] staging:iio: push the main buffer chrdev down to the top level.
Date: Mon, 25 Jul 2011 14:18:39 +0100 [thread overview]
Message-ID: <1311599921-15729-6-git-send-email-jic23@cam.ac.uk> (raw)
In-Reply-To: <1311599921-15729-1-git-send-email-jic23@cam.ac.uk>
Sorry all, this one is very invasive, though the driver changes are
just trivial interface fixes. Not all done yet.
V2 - bring the sca3000 with us.
V3 - fix ade7758 bugs in conversion.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
---
drivers/staging/iio/Documentation/generic_buffer.c | 12 +-
drivers/staging/iio/Documentation/iio_utils.h | 2 +-
drivers/staging/iio/accel/adis16201_core.c | 6 +-
drivers/staging/iio/accel/adis16203_core.c | 6 +-
drivers/staging/iio/accel/adis16204_core.c | 6 +-
drivers/staging/iio/accel/adis16209_core.c | 6 +-
drivers/staging/iio/accel/adis16240_core.c | 6 +-
drivers/staging/iio/accel/lis3l02dq_core.c | 6 +-
drivers/staging/iio/accel/sca3000_core.c | 6 +-
drivers/staging/iio/accel/sca3000_ring.c | 23 +--
drivers/staging/iio/adc/ad7298_core.c | 4 +-
drivers/staging/iio/adc/ad7476_core.c | 4 +-
drivers/staging/iio/adc/ad7606_core.c | 4 +-
drivers/staging/iio/adc/ad7793.c | 6 +-
drivers/staging/iio/adc/ad7887_core.c | 4 +-
drivers/staging/iio/adc/ad799x_core.c | 4 +-
drivers/staging/iio/adc/max1363_core.c | 6 +-
drivers/staging/iio/gyro/adis16260_core.c | 6 +-
drivers/staging/iio/iio.h | 2 +-
drivers/staging/iio/iio_core.h | 32 +++
drivers/staging/iio/imu/adis16400_core.c | 6 +-
drivers/staging/iio/industrialio-core.c | 65 +++++-
drivers/staging/iio/industrialio-ring.c | 239 ++++++--------------
drivers/staging/iio/kfifo_buf.c | 26 +--
drivers/staging/iio/meter/ade7758.h | 5 +-
drivers/staging/iio/meter/ade7758_core.c | 6 +-
drivers/staging/iio/meter/ade7758_ring.c | 4 +-
drivers/staging/iio/ring_generic.h | 24 +--
drivers/staging/iio/ring_sw.c | 25 +--
29 files changed, 244 insertions(+), 307 deletions(-)
diff --git a/drivers/staging/iio/Documentation/generic_buffer.c b/drivers/staging/iio/Documentation/generic_buffer.c
index f82894f..d580953 100644
--- a/drivers/staging/iio/Documentation/generic_buffer.c
+++ b/drivers/staging/iio/Documentation/generic_buffer.c
@@ -173,7 +173,7 @@ int main(int argc, char **argv)
return -1;
/* Find the device requested */
- dev_num = find_type_by_name(device_name, "device");
+ dev_num = find_type_by_name(device_name, "iio:device");
if (dev_num < 0) {
printf("Failed to find the %s\n", device_name);
ret = -ENODEV;
@@ -181,7 +181,7 @@ int main(int argc, char **argv)
}
printf("iio device number being used is %d\n", dev_num);
- asprintf(&dev_dir_name, "%sdevice%d", iio_dir, dev_num);
+ asprintf(&dev_dir_name, "%siio:device%d", iio_dir, dev_num);
if (trigger_name == NULL) {
/*
* Build the trigger name. If it is device associated it's
@@ -212,6 +212,7 @@ int main(int argc, char **argv)
ret = build_channel_array(dev_dir_name, &infoarray, &num_channels);
if (ret) {
printf("Problem reading scan element information\n");
+ printf("diag %s\n", dev_dir_name);
goto error_free_triggername;
}
@@ -220,7 +221,8 @@ int main(int argc, char **argv)
* As we know that the lis3l02dq has only one buffer this may
* be built rather than found.
*/
- ret = asprintf(&buf_dir_name, "%sdevice%d:buffer0", iio_dir, dev_num);
+ ret = asprintf(&buf_dir_name,
+ "%siio:device%d/buffer", iio_dir, dev_num);
if (ret < 0) {
ret = -ENOMEM;
goto error_free_triggername;
@@ -251,9 +253,7 @@ int main(int argc, char **argv)
goto error_free_buf_dir_name;
}
- ret = asprintf(&buffer_access,
- "/dev/device%d:buffer0",
- dev_num);
+ ret = asprintf(&buffer_access, "/dev/iio:device%d", dev_num);
if (ret < 0) {
ret = -ENOMEM;
goto error_free_data;
diff --git a/drivers/staging/iio/Documentation/iio_utils.h b/drivers/staging/iio/Documentation/iio_utils.h
index 150f440..75938b2 100644
--- a/drivers/staging/iio/Documentation/iio_utils.h
+++ b/drivers/staging/iio/Documentation/iio_utils.h
@@ -16,7 +16,7 @@
#define IIO_MAX_NAME_LENGTH 30
-#define FORMAT_SCAN_ELEMENTS_DIR "%s:buffer0/scan_elements"
+#define FORMAT_SCAN_ELEMENTS_DIR "%s/scan_elements"
#define FORMAT_TYPE_FILE "%s_type"
const char *iio_dir = "/sys/bus/iio/devices/";
diff --git a/drivers/staging/iio/accel/adis16201_core.c b/drivers/staging/iio/accel/adis16201_core.c
index 16b388b..07d2bc9 100644
--- a/drivers/staging/iio/accel/adis16201_core.c
+++ b/drivers/staging/iio/accel/adis16201_core.c
@@ -496,7 +496,7 @@ static int __devinit adis16201_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
adis16201_channels,
ARRAY_SIZE(adis16201_channels));
if (ret) {
@@ -519,7 +519,7 @@ static int __devinit adis16201_probe(struct spi_device *spi)
error_remove_trigger:
adis16201_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16201_unconfigure_ring(indio_dev);
error_free_dev:
@@ -536,7 +536,7 @@ static int adis16201_remove(struct spi_device *spi)
struct iio_dev *indio_dev = spi_get_drvdata(spi);
adis16201_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
iio_device_unregister(indio_dev);
adis16201_unconfigure_ring(indio_dev);
diff --git a/drivers/staging/iio/accel/adis16203_core.c b/drivers/staging/iio/accel/adis16203_core.c
index 034115a..2e03b48 100644
--- a/drivers/staging/iio/accel/adis16203_core.c
+++ b/drivers/staging/iio/accel/adis16203_core.c
@@ -446,7 +446,7 @@ static int __devinit adis16203_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
adis16203_channels,
ARRAY_SIZE(adis16203_channels));
if (ret) {
@@ -469,7 +469,7 @@ static int __devinit adis16203_probe(struct spi_device *spi)
error_remove_trigger:
adis16203_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16203_unconfigure_ring(indio_dev);
error_free_dev:
@@ -486,7 +486,7 @@ static int adis16203_remove(struct spi_device *spi)
struct iio_dev *indio_dev = spi_get_drvdata(spi);
adis16203_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
iio_device_unregister(indio_dev);
adis16203_unconfigure_ring(indio_dev);
diff --git a/drivers/staging/iio/accel/adis16204_core.c b/drivers/staging/iio/accel/adis16204_core.c
index c5a46fd..f7cd9d1 100644
--- a/drivers/staging/iio/accel/adis16204_core.c
+++ b/drivers/staging/iio/accel/adis16204_core.c
@@ -521,7 +521,7 @@ static int __devinit adis16204_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
adis16204_channels,
ARRAY_SIZE(adis16204_channels));
if (ret) {
@@ -544,7 +544,7 @@ static int __devinit adis16204_probe(struct spi_device *spi)
error_remove_trigger:
adis16204_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16204_unconfigure_ring(indio_dev);
error_free_dev:
@@ -561,7 +561,7 @@ static int adis16204_remove(struct spi_device *spi)
struct iio_dev *indio_dev = spi_get_drvdata(spi);
adis16204_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
iio_device_unregister(indio_dev);
adis16204_unconfigure_ring(indio_dev);
diff --git a/drivers/staging/iio/accel/adis16209_core.c b/drivers/staging/iio/accel/adis16209_core.c
index 70a7e29..8b8ba5a 100644
--- a/drivers/staging/iio/accel/adis16209_core.c
+++ b/drivers/staging/iio/accel/adis16209_core.c
@@ -494,7 +494,7 @@ static int __devinit adis16209_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
adis16209_channels,
ARRAY_SIZE(adis16209_channels));
if (ret) {
@@ -517,7 +517,7 @@ static int __devinit adis16209_probe(struct spi_device *spi)
error_remove_trigger:
adis16209_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16209_unconfigure_ring(indio_dev);
error_free_dev:
@@ -536,7 +536,7 @@ static int adis16209_remove(struct spi_device *spi)
flush_scheduled_work();
adis16209_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
iio_device_unregister(indio_dev);
adis16209_unconfigure_ring(indio_dev);
diff --git a/drivers/staging/iio/accel/adis16240_core.c b/drivers/staging/iio/accel/adis16240_core.c
index b9dd92d..a5c3ed7 100644
--- a/drivers/staging/iio/accel/adis16240_core.c
+++ b/drivers/staging/iio/accel/adis16240_core.c
@@ -547,7 +547,7 @@ static int __devinit adis16240_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
adis16240_channels,
ARRAY_SIZE(adis16240_channels));
if (ret) {
@@ -570,7 +570,7 @@ static int __devinit adis16240_probe(struct spi_device *spi)
error_remove_trigger:
adis16240_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16240_unconfigure_ring(indio_dev);
error_free_dev:
@@ -590,7 +590,7 @@ static int adis16240_remove(struct spi_device *spi)
flush_scheduled_work();
adis16240_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
iio_device_unregister(indio_dev);
adis16240_unconfigure_ring(indio_dev);
diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c
index 7f946aa..062632b 100644
--- a/drivers/staging/iio/accel/lis3l02dq_core.c
+++ b/drivers/staging/iio/accel/lis3l02dq_core.c
@@ -695,7 +695,7 @@ static int __devinit lis3l02dq_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
lis3l02dq_channels,
ARRAY_SIZE(lis3l02dq_channels));
if (ret) {
@@ -731,7 +731,7 @@ error_free_interrupt:
if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0)
free_irq(st->us->irq, indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
lis3l02dq_unconfigure_ring(indio_dev);
error_free_dev:
@@ -788,7 +788,7 @@ static int lis3l02dq_remove(struct spi_device *spi)
free_irq(st->us->irq, indio_dev);
lis3l02dq_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
lis3l02dq_unconfigure_ring(indio_dev);
iio_device_unregister(indio_dev);
diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
index 114b8cc..9d1e699 100644
--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -1156,7 +1156,7 @@ static int __devinit sca3000_probe(struct spi_device *spi)
if (ret < 0)
goto error_free_dev;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
sca3000_channels,
ARRAY_SIZE(sca3000_channels));
if (ret < 0)
@@ -1181,7 +1181,7 @@ error_free_irq:
if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0)
free_irq(spi->irq, indio_dev);
error_unregister_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unregister_dev:
error_free_dev:
if (regdone)
@@ -1222,7 +1222,7 @@ static int sca3000_remove(struct spi_device *spi)
return ret;
if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0)
free_irq(spi->irq, indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
sca3000_unconfigure_ring(indio_dev);
iio_device_unregister(indio_dev);
diff --git a/drivers/staging/iio/accel/sca3000_ring.c b/drivers/staging/iio/accel/sca3000_ring.c
index e7eb279..2ecf769 100644
--- a/drivers/staging/iio/accel/sca3000_ring.c
+++ b/drivers/staging/iio/accel/sca3000_ring.c
@@ -144,11 +144,6 @@ static int sca3000_ring_get_bytes_per_datum(struct iio_ring_buffer *r)
{
return 6;
}
-static void sca3000_ring_release(struct device *dev)
-{
- struct iio_ring_buffer *r = to_iio_ring_buffer(dev);
- kfree(iio_to_hw_ring_buf(r));
-}
static IIO_RING_ENABLE_ATTR;
static IIO_RING_BYTES_PER_DATUM_ATTR;
@@ -326,16 +321,7 @@ static struct attribute *sca3000_ring_attributes[] = {
static struct attribute_group sca3000_ring_attr = {
.attrs = sca3000_ring_attributes,
-};
-
-static const struct attribute_group *sca3000_ring_attr_groups[] = {
- &sca3000_ring_attr,
- NULL
-};
-
-static struct device_type sca3000_ring_type = {
- .release = sca3000_ring_release,
- .groups = sca3000_ring_attr_groups,
+ .name = "buffer",
};
static struct iio_ring_buffer *sca3000_rb_allocate(struct iio_dev *indio_dev)
@@ -350,18 +336,15 @@ static struct iio_ring_buffer *sca3000_rb_allocate(struct iio_dev *indio_dev)
ring->private = indio_dev;
buf = &ring->buf;
buf->stufftoread = 0;
+ buf->attrs = &sca3000_ring_attr;
iio_ring_buffer_init(buf, indio_dev);
- buf->dev.type = &sca3000_ring_type;
- buf->dev.parent = &indio_dev->dev;
- dev_set_drvdata(&buf->dev, (void *)buf);
return buf;
}
static inline void sca3000_rb_free(struct iio_ring_buffer *r)
{
- if (r)
- iio_put_ring_buffer(r);
+ kfree(iio_to_hw_ring_buf(r));
}
static const struct iio_ring_access_funcs sca3000_ring_access_funcs = {
diff --git a/drivers/staging/iio/adc/ad7298_core.c b/drivers/staging/iio/adc/ad7298_core.c
index 21d1931..d0bcdb1 100644
--- a/drivers/staging/iio/adc/ad7298_core.c
+++ b/drivers/staging/iio/adc/ad7298_core.c
@@ -222,7 +222,7 @@ static int __devinit ad7298_probe(struct spi_device *spi)
goto error_disable_reg;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
&ad7298_channels[1], /* skip temp0 */
ARRAY_SIZE(ad7298_channels) - 1);
if (ret)
@@ -252,7 +252,7 @@ static int __devexit ad7298_remove(struct spi_device *spi)
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad7298_state *st = iio_priv(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
ad7298_ring_cleanup(indio_dev);
iio_device_unregister(indio_dev);
if (!IS_ERR(st->reg)) {
diff --git a/drivers/staging/iio/adc/ad7476_core.c b/drivers/staging/iio/adc/ad7476_core.c
index f2fdd48..3ff2924 100644
--- a/drivers/staging/iio/adc/ad7476_core.c
+++ b/drivers/staging/iio/adc/ad7476_core.c
@@ -185,7 +185,7 @@ static int __devinit ad7476_probe(struct spi_device *spi)
if (ret)
goto error_disable_reg;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
st->chip_info->channel,
ARRAY_SIZE(st->chip_info->channel));
if (ret)
@@ -214,7 +214,7 @@ static int ad7476_remove(struct spi_device *spi)
/* copy needed as st will have been freed */
struct regulator *reg = st->reg;
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
ad7476_ring_cleanup(indio_dev);
iio_device_unregister(indio_dev);
if (!IS_ERR(reg)) {
diff --git a/drivers/staging/iio/adc/ad7606_core.c b/drivers/staging/iio/adc/ad7606_core.c
index dcdb180..f7840cf 100644
--- a/drivers/staging/iio/adc/ad7606_core.c
+++ b/drivers/staging/iio/adc/ad7606_core.c
@@ -505,7 +505,7 @@ struct iio_dev *ad7606_probe(struct device *dev, int irq,
goto error_free_irq;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
indio_dev->channels,
indio_dev->num_channels);
if (ret)
@@ -540,7 +540,7 @@ int ad7606_remove(struct iio_dev *indio_dev)
{
struct ad7606_state *st = iio_priv(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
ad7606_ring_cleanup(indio_dev);
free_irq(st->irq, indio_dev);
diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c
index 1bcb3eb..ed993e3 100644
--- a/drivers/staging/iio/adc/ad7793.c
+++ b/drivers/staging/iio/adc/ad7793.c
@@ -895,7 +895,7 @@ static int __devinit ad7793_probe(struct spi_device *spi)
if (ret)
goto error_unreg_ring;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
indio_dev->channels,
indio_dev->num_channels);
if (ret)
@@ -908,7 +908,7 @@ static int __devinit ad7793_probe(struct spi_device *spi)
return 0;
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_remove_trigger:
ad7793_remove_trigger(indio_dev);
error_unreg_ring:
@@ -933,7 +933,7 @@ static int ad7793_remove(struct spi_device *spi)
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad7793_state *st = iio_priv(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
ad7793_remove_trigger(indio_dev);
ad7793_ring_cleanup(indio_dev);
diff --git a/drivers/staging/iio/adc/ad7887_core.c b/drivers/staging/iio/adc/ad7887_core.c
index a7da9e6..99c8828 100644
--- a/drivers/staging/iio/adc/ad7887_core.c
+++ b/drivers/staging/iio/adc/ad7887_core.c
@@ -193,7 +193,7 @@ static int __devinit ad7887_probe(struct spi_device *spi)
goto error_disable_reg;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
indio_dev->channels,
indio_dev->num_channels);
if (ret)
@@ -221,7 +221,7 @@ static int ad7887_remove(struct spi_device *spi)
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad7887_state *st = iio_priv(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
ad7887_ring_cleanup(indio_dev);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);
diff --git a/drivers/staging/iio/adc/ad799x_core.c b/drivers/staging/iio/adc/ad799x_core.c
index 43d5bd6..33d7fb1 100644
--- a/drivers/staging/iio/adc/ad799x_core.c
+++ b/drivers/staging/iio/adc/ad799x_core.c
@@ -707,7 +707,7 @@ static int __devinit ad799x_probe(struct i2c_client *client,
goto error_cleanup_ring;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
indio_dev->channels,
indio_dev->num_channels);
if (ret)
@@ -751,7 +751,7 @@ static __devexit int ad799x_remove(struct i2c_client *client)
if (client->irq > 0)
free_irq(client->irq, indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
ad799x_ring_cleanup(indio_dev);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);
diff --git a/drivers/staging/iio/adc/max1363_core.c b/drivers/staging/iio/adc/max1363_core.c
index 799b9be..d4a200a 100644
--- a/drivers/staging/iio/adc/max1363_core.c
+++ b/drivers/staging/iio/adc/max1363_core.c
@@ -1314,7 +1314,7 @@ static int __devinit max1363_probe(struct i2c_client *client,
if (ret)
goto error_cleanup_ring;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
st->chip_info->channels,
st->chip_info->num_channels);
if (ret)
@@ -1335,7 +1335,7 @@ static int __devinit max1363_probe(struct i2c_client *client,
return 0;
error_uninit_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_cleanup_ring:
max1363_ring_cleanup(indio_dev);
error_free_available_scan_masks:
@@ -1361,7 +1361,7 @@ static int max1363_remove(struct i2c_client *client)
if (client->irq)
free_irq(st->client->irq, indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
max1363_ring_cleanup(indio_dev);
kfree(indio_dev->available_scan_masks);
if (!IS_ERR(reg)) {
diff --git a/drivers/staging/iio/gyro/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c
index b09b367..0938afd 100644
--- a/drivers/staging/iio/gyro/adis16260_core.c
+++ b/drivers/staging/iio/gyro/adis16260_core.c
@@ -624,7 +624,7 @@ static int __devinit adis16260_probe(struct spi_device *spi)
if (ret)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
indio_dev->channels,
ARRAY_SIZE(adis16260_channels_x));
if (ret) {
@@ -647,7 +647,7 @@ static int __devinit adis16260_probe(struct spi_device *spi)
error_remove_trigger:
adis16260_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16260_unconfigure_ring(indio_dev);
error_free_dev:
@@ -671,7 +671,7 @@ static int adis16260_remove(struct spi_device *spi)
flush_scheduled_work();
adis16260_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
iio_device_unregister(indio_dev);
adis16260_unconfigure_ring(indio_dev);
diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index 78f7972..74d427a 100644
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -245,7 +245,6 @@ struct iio_info {
};
-int iio_event_getfd(struct iio_dev *indio_dev);
/**
* struct iio_dev - industrial I/O device
* @id: [INTERN] used to identify device internally
@@ -288,6 +287,7 @@ struct iio_dev {
struct list_head channel_attr_list;
const char *name;
const struct iio_info *info;
+ struct cdev chrdev;
};
/**
diff --git a/drivers/staging/iio/iio_core.h b/drivers/staging/iio/iio_core.h
index 00e894d..a27fa05 100644
--- a/drivers/staging/iio/iio_core.h
+++ b/drivers/staging/iio/iio_core.h
@@ -10,6 +10,9 @@
* drivers.
*/
+#ifndef _IIO_CORE_H_
+#define _IIO_CORE_H_
+
/**
* iio_device_get_chrdev_minor() - get an unused minor number
**/
@@ -46,3 +49,32 @@ int __iio_add_chan_devattr(const char *postfix,
/* Event interface flags */
#define IIO_BUSY_BIT_POS 1
+
+#ifdef CONFIG_IIO_RING_BUFFER
+struct poll_table_struct;
+
+void iio_chrdev_ring_open(struct iio_dev *indio_dev);
+void iio_chrdev_ring_release(struct iio_dev *indio_dev);
+
+unsigned int iio_ring_poll(struct file *filp,
+ struct poll_table_struct *wait);
+ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf,
+ size_t n, loff_t *f_ps);
+
+
+#define iio_ring_poll_addr (&iio_ring_poll)
+#define iio_ring_read_first_n_outer_addr (&iio_ring_read_first_n_outer)
+
+#else
+
+static inline void iio_chrdev_ring_open(struct iio_dev *indio_dev)
+{}
+static inline void iio_chrdev_ring_release(struct iio_dev *indio_dev)
+{}
+
+#define iio_ring_poll_addr NULL
+#define iio_ring_read_first_n_outer_addr NULL
+
+#endif
+
+#endif
diff --git a/drivers/staging/iio/imu/adis16400_core.c b/drivers/staging/iio/imu/adis16400_core.c
index 371eb01..bc740b0 100644
--- a/drivers/staging/iio/imu/adis16400_core.c
+++ b/drivers/staging/iio/imu/adis16400_core.c
@@ -852,7 +852,7 @@ static int __devinit adis16400_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
st->variant->channels,
st->variant->num_channels);
if (ret) {
@@ -876,7 +876,7 @@ error_remove_trigger:
if (indio_dev->modes & INDIO_RING_TRIGGERED)
adis16400_remove_trigger(indio_dev);
error_uninitialize_ring:
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
error_unreg_ring_funcs:
adis16400_unconfigure_ring(indio_dev);
error_free_dev:
@@ -899,7 +899,7 @@ static int adis16400_remove(struct spi_device *spi)
goto err_ret;
adis16400_remove_trigger(indio_dev);
- iio_ring_buffer_unregister(indio_dev->ring);
+ iio_ring_buffer_unregister(indio_dev);
adis16400_unconfigure_ring(indio_dev);
iio_device_unregister(indio_dev);
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index d0470ed..af639fb 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -292,7 +292,7 @@ void iio_device_free_chrdev_minor(int val)
iio_free_ida_val(&iio_chrdev_ida, val);
}
-int iio_event_getfd(struct iio_dev *indio_dev)
+static int iio_event_getfd(struct iio_dev *indio_dev)
{
if (indio_dev->event_interfaces == NULL)
return -ENODEV;
@@ -1064,6 +1064,8 @@ static void iio_device_unregister_eventset(struct iio_dev *dev_info)
static void iio_dev_release(struct device *device)
{
struct iio_dev *dev_info = container_of(device, struct iio_dev, dev);
+ cdev_del(&dev_info->chrdev);
+ iio_device_free_chrdev_minor(MINOR(device->devt));
iio_put();
kfree(dev_info);
}
@@ -1108,6 +1110,56 @@ void iio_free_device(struct iio_dev *dev)
}
EXPORT_SYMBOL(iio_free_device);
+/**
+ * iio_chrdev_open() - chrdev file open for ring buffer access and ioctls
+ **/
+static int iio_chrdev_open(struct inode *inode, struct file *filp)
+{
+ struct iio_dev *dev_info = container_of(inode->i_cdev,
+ struct iio_dev, chrdev);
+ filp->private_data = dev_info;
+ iio_chrdev_ring_open(dev_info);
+ return 0;
+}
+
+/**
+ * iio_chrdev_release() - chrdev file close ring buffer access and ioctls
+ **/
+static int iio_chrdev_release(struct inode *inode, struct file *filp)
+{
+ iio_chrdev_ring_release(container_of(inode->i_cdev,
+ struct iio_dev, chrdev));
+ return 0;
+}
+
+/* Somewhat of a cross file organization violation - ioctls here are actually
+ * event related */
+static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ struct iio_dev *indio_dev = filp->private_data;
+ int __user *ip = (int __user *)arg;
+ int fd;
+
+ if (cmd == IIO_GET_EVENT_FD_IOCTL) {
+ fd = iio_event_getfd(indio_dev);
+ if (copy_to_user(ip, &fd, sizeof(fd)))
+ return -EFAULT;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static const struct file_operations iio_ring_fileops = {
+ .read = iio_ring_read_first_n_outer_addr,
+ .release = iio_chrdev_release,
+ .open = iio_chrdev_open,
+ .poll = iio_ring_poll_addr,
+ .owner = THIS_MODULE,
+ .llseek = noop_llseek,
+ .unlocked_ioctl = iio_ioctl,
+ .compat_ioctl = iio_ioctl,
+};
+
int iio_device_register(struct iio_dev *dev_info)
{
int ret;
@@ -1118,7 +1170,13 @@ int iio_device_register(struct iio_dev *dev_info)
dev_err(&dev_info->dev, "Failed to get id\n");
goto error_ret;
}
- dev_set_name(&dev_info->dev, "device%d", dev_info->id);
+ dev_set_name(&dev_info->dev, "iio:device%d", dev_info->id);
+ ret = iio_device_get_chrdev_minor();
+ if (ret < 0)
+ goto error_free_ida;
+
+ /* configure elements for the chrdev */
+ dev_info->dev.devt = MKDEV(MAJOR(iio_devt), ret);
ret = device_add(&dev_info->dev);
if (ret)
@@ -1138,6 +1196,9 @@ int iio_device_register(struct iio_dev *dev_info)
if (dev_info->modes & INDIO_RING_TRIGGERED)
iio_device_register_trigger_consumer(dev_info);
+ cdev_init(&dev_info->chrdev, &iio_ring_fileops);
+ dev_info->chrdev.owner = dev_info->info->driver_module;
+ ret = cdev_add(&dev_info->chrdev, dev_info->dev.devt, 1);
return 0;
error_free_sysfs:
diff --git a/drivers/staging/iio/industrialio-ring.c b/drivers/staging/iio/industrialio-ring.c
index cce02244..1607293 100644
--- a/drivers/staging/iio/industrialio-ring.c
+++ b/drivers/staging/iio/industrialio-ring.c
@@ -24,42 +24,6 @@
#include "iio_core.h"
#include "ring_generic.h"
-/**
- * iio_ring_open() - chrdev file open for ring buffer access
- *
- * This function relies on all ring buffer implementations having an
- * iio_ring_buffer as their first element.
- **/
-static int iio_ring_open(struct inode *inode, struct file *filp)
-{
- struct iio_ring_buffer *rb
- = container_of(inode->i_cdev,
- struct iio_ring_buffer, chrdev);
- filp->private_data = rb;
- if (rb->access->mark_in_use)
- rb->access->mark_in_use(rb);
-
- return 0;
-}
-
-/**
- * iio_ring_release() - chrdev file close ring buffer access
- *
- * This function relies on all ring buffer implementations having an
- * iio_ring_buffer as their first element.
- **/
-static int iio_ring_release(struct inode *inode, struct file *filp)
-{
- struct iio_ring_buffer *rb
- = container_of(inode->i_cdev,
- struct iio_ring_buffer, chrdev);
-
- clear_bit(IIO_BUSY_BIT_POS, &rb->flags);
- if (rb->access->unmark_in_use)
- rb->access->unmark_in_use(rb);
-
- return 0;
-}
/**
* iio_ring_read_first_n_outer() - chrdev read for ring buffer access
@@ -67,10 +31,11 @@ static int iio_ring_release(struct inode *inode, struct file *filp)
* This function relies on all ring buffer implementations having an
* iio_ring _bufer as their first element.
**/
-static ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf,
- size_t n, loff_t *f_ps)
+ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf,
+ size_t n, loff_t *f_ps)
{
- struct iio_ring_buffer *rb = filp->private_data;
+ struct iio_dev *indio_dev = filp->private_data;
+ struct iio_ring_buffer *rb = indio_dev->ring;
if (!rb->access->read_first_n)
return -EINVAL;
@@ -80,10 +45,11 @@ static ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf,
/**
* iio_ring_poll() - poll the ring to find out if it has data
*/
-static unsigned int iio_ring_poll(struct file *filp,
- struct poll_table_struct *wait)
+unsigned int iio_ring_poll(struct file *filp,
+ struct poll_table_struct *wait)
{
- struct iio_ring_buffer *rb = filp->private_data;
+ struct iio_dev *indio_dev = filp->private_data;
+ struct iio_ring_buffer *rb = indio_dev->ring;
poll_wait(filp, &rb->pollq, wait);
if (rb->stufftoread)
@@ -92,89 +58,21 @@ static unsigned int iio_ring_poll(struct file *filp,
return 0;
}
-/* Somewhat of a cross file organization violation - ioctls here are actually
- * event related */
-static long iio_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
-{
-
- struct iio_ring_buffer *rb = f->private_data;
- struct iio_dev *indio_dev = rb->indio_dev;
- int __user *ip = (int __user *)arg;
-
- if (cmd == IIO_GET_EVENT_FD_IOCTL) {
- int fd;
- fd = iio_event_getfd(indio_dev);
- if (copy_to_user(ip, &fd, sizeof(fd)))
- return -EFAULT;
- return 0;
- }
- return -EINVAL;
-}
-
-static const struct file_operations iio_ring_fileops = {
- .read = iio_ring_read_first_n_outer,
- .release = iio_ring_release,
- .open = iio_ring_open,
- .poll = iio_ring_poll,
- .owner = THIS_MODULE,
- .llseek = noop_llseek,
- .unlocked_ioctl = iio_ioctl,
- .compat_ioctl = iio_ioctl,
-};
-
-void iio_ring_access_release(struct device *dev)
+void iio_chrdev_ring_open(struct iio_dev *indio_dev)
{
- struct iio_ring_buffer *buf
- = container_of(dev, struct iio_ring_buffer, dev);
- cdev_del(&buf->chrdev);
- iio_device_free_chrdev_minor(MINOR(dev->devt));
+ struct iio_ring_buffer *rb = indio_dev->ring;
+ if (rb && rb->access->mark_in_use)
+ rb->access->mark_in_use(rb);
}
-EXPORT_SYMBOL(iio_ring_access_release);
-static inline int
-__iio_request_ring_buffer_chrdev(struct iio_ring_buffer *buf,
- struct module *owner,
- int id)
+void iio_chrdev_ring_release(struct iio_dev *indio_dev)
{
- int ret;
-
- buf->flags = 0;
- buf->dev.bus = &iio_bus_type;
- device_initialize(&buf->dev);
-
- ret = iio_device_get_chrdev_minor();
- if (ret < 0)
- goto error_device_put;
-
- buf->dev.devt = MKDEV(MAJOR(iio_devt), ret);
- dev_set_name(&buf->dev, "%s:buffer%d",
- dev_name(buf->dev.parent),
- id);
- ret = device_add(&buf->dev);
- if (ret < 0) {
- printk(KERN_ERR "failed to add the ring dev\n");
- goto error_device_put;
- }
- cdev_init(&buf->chrdev, &iio_ring_fileops);
- buf->chrdev.owner = owner;
- ret = cdev_add(&buf->chrdev, buf->dev.devt, 1);
- if (ret) {
- printk(KERN_ERR "failed to allocate ring chrdev\n");
- goto error_device_unregister;
- }
- return 0;
+ struct iio_ring_buffer *rb = indio_dev->ring;
-error_device_unregister:
- device_unregister(&buf->dev);
-error_device_put:
- put_device(&buf->dev);
-
- return ret;
-}
+ clear_bit(IIO_BUSY_BIT_POS, &rb->flags);
+ if (rb->access->unmark_in_use)
+ rb->access->unmark_in_use(rb);
-static void __iio_free_ring_buffer_chrdev(struct iio_ring_buffer *buf)
-{
- device_unregister(&buf->dev);
}
void iio_ring_buffer_init(struct iio_ring_buffer *ring,
@@ -209,9 +107,10 @@ static ssize_t iio_scan_el_show(struct device *dev,
char *buf)
{
int ret;
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
- ret = iio_scan_mask_query(ring, to_iio_dev_attr(attr)->address);
+ ret = iio_scan_mask_query(dev_info->ring,
+ to_iio_dev_attr(attr)->address);
if (ret < 0)
return ret;
return sprintf(buf, "%d\n", ret);
@@ -233,8 +132,8 @@ static ssize_t iio_scan_el_store(struct device *dev,
{
int ret = 0;
bool state;
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
- struct iio_dev *indio_dev = ring->indio_dev;
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
state = !(buf[0] == '0');
@@ -267,8 +166,8 @@ static ssize_t iio_scan_el_ts_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", ring->scan_timestamp);
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ return sprintf(buf, "%d\n", dev_info->ring->scan_timestamp);
}
static ssize_t iio_scan_el_ts_store(struct device *dev,
@@ -277,26 +176,27 @@ static ssize_t iio_scan_el_ts_store(struct device *dev,
size_t len)
{
int ret = 0;
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
- struct iio_dev *indio_dev = ring->indio_dev;
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
bool state;
+
state = !(buf[0] == '0');
mutex_lock(&indio_dev->mlock);
if (indio_dev->currentmode == INDIO_RING_TRIGGERED) {
ret = -EBUSY;
goto error_ret;
}
- ring->scan_timestamp = state;
+ indio_dev->ring->scan_timestamp = state;
error_ret:
mutex_unlock(&indio_dev->mlock);
return ret ? ret : len;
}
-static int iio_ring_add_channel_sysfs(struct iio_ring_buffer *ring,
+static int iio_ring_add_channel_sysfs(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan)
{
int ret;
+ struct iio_ring_buffer *ring = indio_dev->ring;
ret = __iio_add_chan_devattr("index", "scan_elements",
chan,
@@ -304,7 +204,7 @@ static int iio_ring_add_channel_sysfs(struct iio_ring_buffer *ring,
NULL,
0,
0,
- &ring->dev,
+ &indio_dev->dev,
&ring->scan_el_dev_attr_list);
if (ret)
goto error_ret;
@@ -315,7 +215,7 @@ static int iio_ring_add_channel_sysfs(struct iio_ring_buffer *ring,
NULL,
0,
0,
- &ring->dev,
+ &indio_dev->dev,
&ring->scan_el_dev_attr_list);
if (ret)
goto error_ret;
@@ -327,7 +227,7 @@ static int iio_ring_add_channel_sysfs(struct iio_ring_buffer *ring,
&iio_scan_el_store,
chan->scan_index,
0,
- &ring->dev,
+ &indio_dev->dev,
&ring->scan_el_dev_attr_list);
else
ret = __iio_add_chan_devattr("en", "scan_elements",
@@ -336,16 +236,16 @@ static int iio_ring_add_channel_sysfs(struct iio_ring_buffer *ring,
&iio_scan_el_ts_store,
chan->scan_index,
0,
- &ring->dev,
+ &indio_dev->dev,
&ring->scan_el_dev_attr_list);
error_ret:
return ret;
}
-static void iio_ring_remove_and_free_scan_dev_attr(struct iio_ring_buffer *ring,
+static void iio_ring_remove_and_free_scan_dev_attr(struct iio_dev *indio_dev,
struct iio_dev_attr *p)
{
- sysfs_remove_file_from_group(&ring->dev.kobj,
+ sysfs_remove_file_from_group(&indio_dev->dev.kobj,
&p->dev_attr.attr, "scan_elements");
kfree(p->dev_attr.attr.name);
kfree(p);
@@ -360,71 +260,79 @@ static struct attribute_group iio_scan_el_dummy_group = {
.attrs = iio_scan_el_dummy_attrs
};
-static void __iio_ring_attr_cleanup(struct iio_ring_buffer *ring)
+static void __iio_ring_attr_cleanup(struct iio_dev *indio_dev)
{
struct iio_dev_attr *p, *n;
+ struct iio_ring_buffer *ring = indio_dev->ring;
int anydynamic = !list_empty(&ring->scan_el_dev_attr_list);
list_for_each_entry_safe(p, n,
&ring->scan_el_dev_attr_list, l)
- iio_ring_remove_and_free_scan_dev_attr(ring, p);
+ iio_ring_remove_and_free_scan_dev_attr(indio_dev, p);
if (ring->scan_el_attrs)
- sysfs_remove_group(&ring->dev.kobj,
+ sysfs_remove_group(&indio_dev->dev.kobj,
ring->scan_el_attrs);
else if (anydynamic)
- sysfs_remove_group(&ring->dev.kobj,
+ sysfs_remove_group(&indio_dev->dev.kobj,
&iio_scan_el_dummy_group);
}
-int iio_ring_buffer_register_ex(struct iio_ring_buffer *ring, int id,
+int iio_ring_buffer_register_ex(struct iio_dev *indio_dev, int id,
const struct iio_chan_spec *channels,
int num_channels)
{
+ struct iio_ring_buffer *ring = indio_dev->ring;
int ret, i;
- ret = __iio_request_ring_buffer_chrdev(ring, ring->owner, id);
- if (ret)
- goto error_ret;
-
if (ring->scan_el_attrs) {
- ret = sysfs_create_group(&ring->dev.kobj,
+ ret = sysfs_create_group(&indio_dev->dev.kobj,
ring->scan_el_attrs);
if (ret) {
- dev_err(&ring->dev,
+ dev_err(&indio_dev->dev,
"Failed to add sysfs scan elements\n");
- goto error_free_ring_buffer_chrdev;
+ goto error_ret;
}
} else if (channels) {
- ret = sysfs_create_group(&ring->dev.kobj,
+ ret = sysfs_create_group(&indio_dev->dev.kobj,
&iio_scan_el_dummy_group);
if (ret)
- goto error_free_ring_buffer_chrdev;
+ goto error_ret;
+ }
+ if (ring->attrs) {
+ ret = sysfs_create_group(&indio_dev->dev.kobj,
+ ring->attrs);
+ if (ret)
+ goto error_cleanup_dynamic;
}
INIT_LIST_HEAD(&ring->scan_el_dev_attr_list);
if (channels) {
/* new magic */
for (i = 0; i < num_channels; i++) {
- ret = iio_ring_add_channel_sysfs(ring, &channels[i]);
+ ret = iio_ring_add_channel_sysfs(indio_dev,
+ &channels[i]);
if (ret < 0)
- goto error_cleanup_dynamic;
+ goto error_cleanup_group;
}
}
return 0;
+error_cleanup_group:
+ if (ring->attrs)
+ sysfs_remove_group(&indio_dev->dev.kobj, ring->attrs);
error_cleanup_dynamic:
- __iio_ring_attr_cleanup(ring);
-error_free_ring_buffer_chrdev:
- __iio_free_ring_buffer_chrdev(ring);
+ __iio_ring_attr_cleanup(indio_dev);
error_ret:
return ret;
}
EXPORT_SYMBOL(iio_ring_buffer_register_ex);
-void iio_ring_buffer_unregister(struct iio_ring_buffer *ring)
+void iio_ring_buffer_unregister(struct iio_dev *indio_dev)
{
- __iio_ring_attr_cleanup(ring);
- __iio_free_ring_buffer_chrdev(ring);
+ if (indio_dev->ring->attrs)
+ sysfs_remove_group(&indio_dev->dev.kobj,
+ indio_dev->ring->attrs);
+ __iio_ring_attr_cleanup(indio_dev);
}
EXPORT_SYMBOL(iio_ring_buffer_unregister);
@@ -432,7 +340,8 @@ ssize_t iio_read_ring_length(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
if (ring->access->get_length)
return sprintf(buf, "%d\n",
@@ -449,7 +358,8 @@ ssize_t iio_write_ring_length(struct device *dev,
{
int ret;
ulong val;
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
ret = strict_strtoul(buf, 10, &val);
if (ret)
@@ -473,7 +383,8 @@ ssize_t iio_read_ring_bytes_per_datum(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
if (ring->access->get_bytes_per_datum)
return sprintf(buf, "%d\n",
@@ -491,8 +402,8 @@ ssize_t iio_store_ring_enable(struct device *dev,
int ret;
bool requested_state, current_state;
int previous_mode;
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
- struct iio_dev *dev_info = ring->indio_dev;
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct iio_ring_buffer *ring = dev_info->ring;
mutex_lock(&dev_info->mlock);
previous_mode = dev_info->currentmode;
@@ -584,8 +495,8 @@ ssize_t iio_show_ring_enable(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct iio_ring_buffer *ring = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", !!(ring->indio_dev->currentmode
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ return sprintf(buf, "%d\n", !!(dev_info->currentmode
& INDIO_ALL_RING_MODES));
}
EXPORT_SYMBOL(iio_show_ring_enable);
diff --git a/drivers/staging/iio/kfifo_buf.c b/drivers/staging/iio/kfifo_buf.c
index 3c9516b..39b05855 100644
--- a/drivers/staging/iio/kfifo_buf.c
+++ b/drivers/staging/iio/kfifo_buf.c
@@ -87,24 +87,7 @@ static struct attribute *iio_kfifo_attributes[] = {
static struct attribute_group iio_kfifo_attribute_group = {
.attrs = iio_kfifo_attributes,
-};
-
-static const struct attribute_group *iio_kfifo_attribute_groups[] = {
- &iio_kfifo_attribute_group,
- NULL
-};
-
-static void iio_kfifo_release(struct device *dev)
-{
- struct iio_ring_buffer *r = to_iio_ring_buffer(dev);
- struct iio_kfifo *kf = iio_to_kfifo(r);
- kfifo_free(&kf->kf);
- kfree(kf);
-}
-
-static struct device_type iio_kfifo_type = {
- .release = iio_kfifo_release,
- .groups = iio_kfifo_attribute_groups,
+ .name = "buffer",
};
struct iio_ring_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev)
@@ -116,10 +99,8 @@ struct iio_ring_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev)
return NULL;
kf->update_needed = true;
iio_ring_buffer_init(&kf->ring, indio_dev);
+ kf->ring.attrs = &iio_kfifo_attribute_group;
__iio_init_kfifo(kf);
- kf->ring.dev.type = &iio_kfifo_type;
- kf->ring.dev.parent = &indio_dev->dev;
- dev_set_drvdata(&kf->ring.dev, (void *)&(kf->ring));
return &kf->ring;
}
@@ -159,8 +140,7 @@ static int iio_set_length_kfifo(struct iio_ring_buffer *r, int length)
void iio_kfifo_free(struct iio_ring_buffer *r)
{
- if (r)
- iio_put_ring_buffer(r);
+ kfree(iio_to_kfifo(r));
}
EXPORT_SYMBOL(iio_kfifo_free);
diff --git a/drivers/staging/iio/meter/ade7758.h b/drivers/staging/iio/meter/ade7758.h
index fd74e15..4d73e1a 100644
--- a/drivers/staging/iio/meter/ade7758.h
+++ b/drivers/staging/iio/meter/ade7758.h
@@ -150,8 +150,7 @@ ssize_t ade7758_read_data_from_ring(struct device *dev,
int ade7758_configure_ring(struct iio_dev *indio_dev);
void ade7758_unconfigure_ring(struct iio_dev *indio_dev);
-int ade7758_initialize_ring(struct iio_ring_buffer *ring);
-void ade7758_uninitialize_ring(struct iio_ring_buffer *ring);
+void ade7758_uninitialize_ring(struct iio_dev *indio_dev);
int ade7758_set_irq(struct device *dev, bool enable);
int ade7758_spi_write_reg_8(struct device *dev,
@@ -180,7 +179,7 @@ static inline int ade7758_initialize_ring(struct iio_ring_buffer *ring)
{
return 0;
}
-static inline void ade7758_uninitialize_ring(struct iio_ring_buffer *ring)
+static inline void ade7758_uninitialize_ring(struct iio_dev *indio_dev)
{
}
#endif /* CONFIG_IIO_RING_BUFFER */
diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c
index 299b954..ce2d156 100644
--- a/drivers/staging/iio/meter/ade7758_core.c
+++ b/drivers/staging/iio/meter/ade7758_core.c
@@ -779,7 +779,7 @@ static int __devinit ade7758_probe(struct spi_device *spi)
goto error_unreg_ring_funcs;
regdone = 1;
- ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+ ret = iio_ring_buffer_register_ex(indio_dev, 0,
&ade7758_channels[0],
ARRAY_SIZE(ade7758_channels));
if (ret) {
@@ -804,7 +804,7 @@ error_remove_trigger:
if (indio_dev->modes & INDIO_RING_TRIGGERED)
ade7758_remove_trigger(indio_dev);
error_uninitialize_ring:
- ade7758_uninitialize_ring(indio_dev->ring);
+ ade7758_uninitialize_ring(indio_dev);
error_unreg_ring_funcs:
ade7758_unconfigure_ring(indio_dev);
error_free_tx:
@@ -831,7 +831,7 @@ static int ade7758_remove(struct spi_device *spi)
goto err_ret;
ade7758_remove_trigger(indio_dev);
- ade7758_uninitialize_ring(indio_dev->ring);
+ ade7758_uninitialize_ring(indio_dev);
ade7758_unconfigure_ring(indio_dev);
kfree(st->tx);
kfree(st->rx);
diff --git a/drivers/staging/iio/meter/ade7758_ring.c b/drivers/staging/iio/meter/ade7758_ring.c
index 1e2a096..5e740e3 100644
--- a/drivers/staging/iio/meter/ade7758_ring.c
+++ b/drivers/staging/iio/meter/ade7758_ring.c
@@ -200,7 +200,7 @@ error_iio_sw_rb_free:
return ret;
}
-void ade7758_uninitialize_ring(struct iio_ring_buffer *ring)
+void ade7758_uninitialize_ring(struct iio_dev *indio_dev)
{
- iio_ring_buffer_unregister(ring);
+ iio_ring_buffer_unregister(indio_dev);
}
diff --git a/drivers/staging/iio/ring_generic.h b/drivers/staging/iio/ring_generic.h
index 81bbe39..db8d0d1 100644
--- a/drivers/staging/iio/ring_generic.h
+++ b/drivers/staging/iio/ring_generic.h
@@ -94,7 +94,6 @@ struct iio_ring_setup_ops {
* @flags: [INTERN] file ops related flags including busy flag.
**/
struct iio_ring_buffer {
- struct device dev;
struct iio_dev *indio_dev;
struct module *owner;
int length;
@@ -111,7 +110,7 @@ struct iio_ring_buffer {
wait_queue_head_t pollq;
bool stufftoread;
unsigned long flags;
- struct cdev chrdev;
+ const struct attribute_group *attrs;
};
/**
@@ -200,24 +199,15 @@ static inline int iio_scan_mask_set(struct iio_ring_buffer *ring, int bit)
return 0;
};
-/**
- * iio_put_ring_buffer() - notify done with buffer
- * @ring: the buffer we are done with.
- **/
-static inline void iio_put_ring_buffer(struct iio_ring_buffer *ring)
-{
- put_device(&ring->dev);
-};
-
#define to_iio_ring_buffer(d) \
container_of(d, struct iio_ring_buffer, dev)
/**
* iio_ring_buffer_register_ex() - register the buffer with IIO core
- * @ring: the buffer to be registered
+ * @indio_dev: device with the buffer to be registered
* @id: the id of the buffer (typically 0)
**/
-int iio_ring_buffer_register_ex(struct iio_ring_buffer *ring, int id,
+int iio_ring_buffer_register_ex(struct iio_dev *indio_dev, int id,
const struct iio_chan_spec *channels,
int num_channels);
@@ -225,9 +215,9 @@ void iio_ring_access_release(struct device *dev);
/**
* iio_ring_buffer_unregister() - unregister the buffer from IIO core
- * @ring: the buffer to be unregistered
+ * @indio_dev: the device with the buffer to be unregistered
**/
-void iio_ring_buffer_unregister(struct iio_ring_buffer *ring);
+void iio_ring_buffer_unregister(struct iio_dev *indio_dev);
/**
* iio_read_ring_length() - attr func to get number of datums in the buffer
@@ -274,7 +264,7 @@ int iio_sw_ring_preenable(struct iio_dev *indio_dev);
#else /* CONFIG_IIO_RING_BUFFER */
-static inline int iio_ring_buffer_register_ex(struct iio_ring_buffer *ring,
+static inline int iio_ring_buffer_register_ex(struct iio_dev *indio_dev,
int id,
struct iio_chan_spec *channels,
int num_channels)
@@ -282,7 +272,7 @@ static inline int iio_ring_buffer_register_ex(struct iio_ring_buffer *ring,
return 0;
}
-static inline void iio_ring_buffer_unregister(struct iio_ring_buffer *ring)
+static inline void iio_ring_buffer_unregister(struct iio_dev *indio_dev)
{};
#endif /* CONFIG_IIO_RING_BUFFER */
diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c
index feb84e2..1905e03 100644
--- a/drivers/staging/iio/ring_sw.c
+++ b/drivers/staging/iio/ring_sw.c
@@ -392,13 +392,6 @@ static int iio_mark_update_needed_sw_rb(struct iio_ring_buffer *r)
return 0;
}
-static void iio_sw_rb_release(struct device *dev)
-{
- struct iio_ring_buffer *r = to_iio_ring_buffer(dev);
- iio_ring_access_release(&r->dev);
- kfree(iio_to_sw_ring(r));
-}
-
static IIO_RING_ENABLE_ATTR;
static IIO_RING_BYTES_PER_DATUM_ATTR;
static IIO_RING_LENGTH_ATTR;
@@ -413,16 +406,7 @@ static struct attribute *iio_ring_attributes[] = {
static struct attribute_group iio_ring_attribute_group = {
.attrs = iio_ring_attributes,
-};
-
-static const struct attribute_group *iio_ring_attribute_groups[] = {
- &iio_ring_attribute_group,
- NULL
-};
-
-static struct device_type iio_sw_ring_type = {
- .release = iio_sw_rb_release,
- .groups = iio_ring_attribute_groups,
+ .name = "buffer",
};
struct iio_ring_buffer *iio_sw_rb_allocate(struct iio_dev *indio_dev)
@@ -437,9 +421,7 @@ struct iio_ring_buffer *iio_sw_rb_allocate(struct iio_dev *indio_dev)
buf = &ring->buf;
iio_ring_buffer_init(buf, indio_dev);
__iio_init_sw_ring_buffer(ring);
- buf->dev.type = &iio_sw_ring_type;
- buf->dev.parent = &indio_dev->dev;
- dev_set_drvdata(&buf->dev, (void *)buf);
+ buf->attrs = &iio_ring_attribute_group;
return buf;
}
@@ -447,8 +429,7 @@ EXPORT_SYMBOL(iio_sw_rb_allocate);
void iio_sw_rb_free(struct iio_ring_buffer *r)
{
- if (r)
- iio_put_ring_buffer(r);
+ kfree(iio_to_sw_ring(r));
}
EXPORT_SYMBOL(iio_sw_rb_free);
--
1.7.3.4
next prev parent reply other threads:[~2011-07-25 13:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-25 13:18 [PATCH 0/7 V2] blue part 5: IIO: Reduce to 1 the number of chrdevs per device Jonathan Cameron
2011-07-25 13:18 ` [PATCH 1/7] staging:iio:chrdev.h rationalization Jonathan Cameron
2011-07-25 13:18 ` [PATCH 2/7] staging:iio: remove specific chrdev for event reading. Get fd from ioctl on buffer Jonathan Cameron
2011-07-26 8:36 ` Hennerich, Michael
2011-07-26 8:48 ` Jonathan Cameron
2011-07-25 13:18 ` [PATCH 3/7] ioctl region for IIO Jonathan Cameron
2011-07-25 13:18 ` [PATCH 4/7] staging:iio: squash chrdev handler remains into users Jonathan Cameron
2011-07-25 13:18 ` Jonathan Cameron [this message]
2011-07-26 8:22 ` [PATCH 5/7] staging:iio: push the main buffer chrdev down to the top level Hennerich, Michael
2011-07-29 16:09 ` Jonathan Cameron
2011-07-25 13:18 ` [PATCH 6/7] staging:iio: remove now defunct header definitions and add some statics Jonathan Cameron
2011-07-25 13:18 ` [PATCH 7/7] staging:iio:Documentation sysfs-bus-iio update for chrdev merge Jonathan Cameron
2011-08-30 11:32 [PATCH 0/7] staging:iio: character device merge Jonathan Cameron
2011-08-30 11:32 ` [PATCH 5/7] staging:iio: push the main buffer chrdev down to the top level Jonathan Cameron
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