From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/iio/dac/ad5380.c | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/kernel/drivers/iio/dac/ad5380.c b/kernel/drivers/iio/dac/ad5380.c
index 617c9f7..37ef653 100644
--- a/kernel/drivers/iio/dac/ad5380.c
+++ b/kernel/drivers/iio/dac/ad5380.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Analog devices AD5380, AD5381, AD5382, AD5383, AD5390, AD5391, AD5392
* multi-channel Digital to Analog Converters driver
*
* Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
*/
#include <linux/device.h>
@@ -52,6 +51,7 @@
* @vref_reg: vref supply regulator
* @vref: actual reference voltage used in uA
* @pwr_down: whether the chip is currently in power down mode
+ * @lock: lock to protect the data buffer during regmap ops
*/
struct ad5380_state {
@@ -60,6 +60,7 @@
struct regulator *vref_reg;
int vref;
bool pwr_down;
+ struct mutex lock;
};
enum ad5380_type {
@@ -99,7 +100,7 @@
if (ret)
return ret;
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
if (pwr_down)
ret = regmap_write(st->regmap, AD5380_REG_SF_PWR_DOWN, 0);
@@ -108,7 +109,7 @@
st->pwr_down = pwr_down;
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret ? ret : len;
}
@@ -239,7 +240,7 @@
.write_raw = ad5380_write_raw,
};
-static struct iio_chan_spec_ext_info ad5380_ext_info[] = {
+static const struct iio_chan_spec_ext_info ad5380_ext_info[] = {
{
.name = "powerdown",
.read = ad5380_read_dac_powerdown,
@@ -385,12 +386,13 @@
st->chip_info = &ad5380_chip_info_tbl[type];
st->regmap = regmap;
- indio_dev->dev.parent = dev;
indio_dev->name = name;
indio_dev->info = &ad5380_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->num_channels = st->chip_info->num_channels;
+ mutex_init(&st->lock);
+
ret = ad5380_alloc_channels(indio_dev);
if (ret) {
dev_err(dev, "Failed to allocate channel spec: %d\n", ret);
--
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