linux-kernel - [PATCH v4 7/8] iio: accel: kxcjk-1013: use available_scan

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Date:	Tue,  4 Aug 2015 17:04:15 +0300
From:	Irina Tirdea <irina.tirdea@...el.com>
To:	Wolfram Sang <wsa@...-dreams.de>,
	Jonathan Cameron <jic23@...nel.org>, linux-iio@...r.kernel.org,
	linux-i2c@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Srinivas Pandruvada <srinivas.pandruvada@...el.com>,
	Peter Meerwald <pmeerw@...erw.net>,
	Adriana Reus <adriana.reus@...el.com>,
	Irina Tirdea <irina.tirdea@...el.com>
Subject: [PATCH v4 7/8] iio: accel: kxcjk-1013: use available_scan_masks

From: Adriana Reus <adriana.reus@...el.com>

Use available_scan_masks to allow the iio core to select
the data to send to userspace depending on which axes are
enabled, instead of doing this in the driver's interrupt
handler.

Signed-off-by: Adriana Reus <adriana.reus@...el.com>
Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
Acked-by: Jonathan Cameron <jic23@...nel.org>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
---
 drivers/iio/accel/kxcjk-1013.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
index 0d9bd35..d4b80e7 100644
--- a/drivers/iio/accel/kxcjk-1013.c
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -115,6 +115,7 @@ enum kxcjk1013_axis {
 	AXIS_X,
 	AXIS_Y,
 	AXIS_Z,
+	AXIS_MAX,
 };
 
 enum kxcjk1013_mode {
@@ -956,6 +957,8 @@ static const struct iio_info kxcjk1013_info = {
 	.driver_module		= THIS_MODULE,
 };
 
+static const unsigned long kxcjk1013_scan_masks[] = {0x7, 0};
+
 static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
@@ -965,8 +968,7 @@ static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
 
 	mutex_lock(&data->mutex);
 
-	for_each_set_bit(bit, indio_dev->active_scan_mask,
-			 indio_dev->masklength) {
+	for (bit = 0; bit < AXIS_MAX; bit++) {
 		ret = kxcjk1013_get_acc_reg(data, bit);
 		if (ret < 0) {
 			mutex_unlock(&data->mutex);
@@ -1236,6 +1238,7 @@ static int kxcjk1013_probe(struct i2c_client *client,
 	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = kxcjk1013_channels;
 	indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
+	indio_dev->available_scan_masks = kxcjk1013_scan_masks;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &kxcjk1013_info;
-- 
1.9.1

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