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Date: Tue, 18 Jun 2019 11:06:34 +0200
From: Fabien Lahoudere <fabien.lahoudere@...labora.com>
To: unlisted-recipients:; (no To-header on input)
Cc: kernel@...labora.com,
Fabien Lahoudere <fabien.lahoudere@...labora.com>,
Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/8] iio: common: cros_ec_sensors: move registration to core
In order to simplify derivated drivers from cros_ec_sensors_core,
a new core function is created to registered IIO stricture.
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@...labora.com>
---
.../common/cros_ec_sensors/cros_ec_sensors.c | 9 +-
.../cros_ec_sensors/cros_ec_sensors_core.c | 97 ++++++++++++-------
drivers/iio/light/cros_ec_light_prox.c | 7 +-
drivers/iio/pressure/cros_ec_baro.c | 7 +-
.../linux/iio/common/cros_ec_sensors_core.h | 16 ++-
5 files changed, 72 insertions(+), 64 deletions(-)
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
index 897dc83a3355..c4bee9265246 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
@@ -14,7 +14,7 @@
#include <linux/iio/iio.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
+
#include <linux/kernel.h>
#include <linux/mfd/cros_ec.h>
#include <linux/mfd/cros_ec_commands.h>
@@ -233,12 +233,7 @@ static int cros_ec_sensors_probe(struct platform_device *pdev)
else
state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
- ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
- cros_ec_sensors_capture, NULL);
- if (ret)
- return ret;
-
- return devm_iio_device_register(dev, indio_dev);
+ return cros_ec_sensors_core_register(pdev, indio_dev);
}
static const struct platform_device_id cros_ec_sensors_ids[] = {
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index e5181e007dd7..3880849c5cca 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -12,6 +12,7 @@
#include <linux/iio/iio.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
#include <linux/kernel.h>
#include <linux/mfd/cros_ec.h>
#include <linux/mfd/cros_ec_commands.h>
@@ -95,6 +96,67 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
}
EXPORT_SYMBOL_GPL(cros_ec_sensors_core_init);
+/**
+ * cros_ec_sensors_capture() - the trigger handler function
+ * @irq: the interrupt number.
+ * @p: a pointer to the poll function.
+ *
+ * On a trigger event occurring, if the pollfunc is attached then this
+ * handler is called as a threaded interrupt (and hence may sleep). It
+ * is responsible for grabbing data from the device and pushing it into
+ * the associated buffer.
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t cros_ec_sensors_capture(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&st->cmd_lock);
+
+ /* Clear capture data. */
+ memset(st->samples, 0, indio_dev->scan_bytes);
+
+ /* Read data based on which channels are enabled in scan mask. */
+ ret = st->read_ec_sensors_data(indio_dev,
+ *indio_dev->active_scan_mask,
+ (s16 *)st->samples);
+ if (ret < 0)
+ goto done;
+
+ iio_push_to_buffers_with_timestamp(indio_dev, st->samples,
+ iio_get_time_ns(indio_dev));
+
+done:
+ /*
+ * Tell the core we are done with this trigger and ready for the
+ * next one.
+ */
+ iio_trigger_notify_done(indio_dev->trig);
+
+ mutex_unlock(&st->cmd_lock);
+
+ return IRQ_HANDLED;
+}
+
+int cros_ec_sensors_core_register(struct platform_device *pdev,
+ struct iio_dev *indio_dev)
+{
+ int ret;
+ struct device *dev = &pdev->dev;
+
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+ cros_ec_sensors_capture, NULL);
+ if (ret)
+ return ret;
+
+ return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_GPL(cros_ec_sensors_core_register);
+
int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *state,
u16 opt_length)
{
@@ -380,41 +442,6 @@ int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev,
}
EXPORT_SYMBOL_GPL(cros_ec_sensors_read_cmd);
-irqreturn_t cros_ec_sensors_capture(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
- int ret;
-
- mutex_lock(&st->cmd_lock);
-
- /* Clear capture data. */
- memset(st->samples, 0, indio_dev->scan_bytes);
-
- /* Read data based on which channels are enabled in scan mask. */
- ret = st->read_ec_sensors_data(indio_dev,
- *(indio_dev->active_scan_mask),
- (s16 *)st->samples);
- if (ret < 0)
- goto done;
-
- iio_push_to_buffers_with_timestamp(indio_dev, st->samples,
- iio_get_time_ns(indio_dev));
-
-done:
- /*
- * Tell the core we are done with this trigger and ready for the
- * next one.
- */
- iio_trigger_notify_done(indio_dev->trig);
-
- mutex_unlock(&st->cmd_lock);
-
- return IRQ_HANDLED;
-}
-EXPORT_SYMBOL_GPL(cros_ec_sensors_capture);
-
int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
index 32ea5afd495f..682dc19c2bf3 100644
--- a/drivers/iio/light/cros_ec_light_prox.c
+++ b/drivers/iio/light/cros_ec_light_prox.c
@@ -215,12 +215,7 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev)
state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
- ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
- cros_ec_sensors_capture, NULL);
- if (ret)
- return ret;
-
- return devm_iio_device_register(dev, indio_dev);
+ return cros_ec_sensors_core_register(pdev, indio_dev);
}
static const struct platform_device_id cros_ec_light_prox_ids[] = {
diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
index 8718036d74d2..9d3745bc2fba 100644
--- a/drivers/iio/pressure/cros_ec_baro.c
+++ b/drivers/iio/pressure/cros_ec_baro.c
@@ -152,12 +152,7 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
- ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
- cros_ec_sensors_capture, NULL);
- if (ret)
- return ret;
-
- return devm_iio_device_register(dev, indio_dev);
+ return cros_ec_sensors_core_register(pdev, indio_dev);
}
static const struct platform_device_id cros_ec_baro_ids[] = {
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index 485c649b421f..60f40d253f4a 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -116,18 +116,14 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
bool physical_device);
/**
- * cros_ec_sensors_capture() - the trigger handler function
- * @irq: the interrupt number.
- * @p: a pointer to the poll function.
- *
- * On a trigger event occurring, if the pollfunc is attached then this
- * handler is called as a threaded interrupt (and hence may sleep). It
- * is responsible for grabbing data from the device and pushing it into
- * the associated buffer.
+ * cros_ec_sensors_core_register() - registration of the core structure
+ * @pdev: platform device created for the sensors
+ * @indio_dev: iio device structure of the device
*
- * Return: IRQ_HANDLED
+ * Return: 0 on success, -errno on failure.
*/
-irqreturn_t cros_ec_sensors_capture(int irq, void *p);
+int cros_ec_sensors_core_register(struct platform_device *pdev,
+ struct iio_dev *indio_dev);
/**
* cros_ec_core_channel_init() - initialize channel
--
2.20.1
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