linux-kernel - [PATCH 08/14] iio: triggers: add private data to pollfuncs

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Date:   Fri, 22 Dec 2017 17:07:15 +0200
From:   Eugen Hristev <eugen.hristev@...rochip.com>
To:     <nicolas.ferre@...rochip.com>, <ludovic.desroches@...rochip.com>,
        <alexandre.belloni@...e-electrons.com>,
        <linux-iio@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jic23@...nel.org>, <linux-input@...r.kernel.org>,
        <dmitry.torokhov@...il.com>
CC:     Eugen Hristev <eugen.hristev@...rochip.com>
Subject: [PATCH 08/14] iio: triggers: add private data to pollfuncs

Add a private data pointer field to pollfunc struct.
This is useful in the trigger handler to get specific data
for the driver registering the pollfunc.

Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
---
 include/linux/iio/trigger_consumer.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/iio/trigger_consumer.h b/include/linux/iio/trigger_consumer.h
index 36e2a02..13be595 100644
--- a/include/linux/iio/trigger_consumer.h
+++ b/include/linux/iio/trigger_consumer.h
@@ -29,6 +29,7 @@ struct iio_trigger;
  * @timestamp:			some devices need a timestamp grabbed as soon
  *				as possible after the trigger - hence handler
  *				passes it via here.
+ * @p:				private data for the poll func owner.
  **/
 struct iio_poll_func {
 	struct iio_dev *indio_dev;
@@ -38,6 +39,7 @@ struct iio_poll_func {
 	char *name;
 	int irq;
 	s64 timestamp;
+	void *p;
 };
 
 
@@ -49,6 +51,13 @@ struct iio_poll_func
 		    const char *fmt,
 		    ...);
 void iio_dealloc_pollfunc(struct iio_poll_func *pf);
+
+static inline void
+iio_pollfunc_set_private_data(struct iio_poll_func *pf, void *p)
+{
+	pf->p = p;
+}
+
 irqreturn_t iio_pollfunc_store_time(int irq, void *p);
 
 void iio_trigger_notify_done(struct iio_trigger *trig);
-- 
2.7.4