From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/iio/dac/ad5761.c | 20 +++++++++++---------
1 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/kernel/drivers/iio/dac/ad5761.c b/kernel/drivers/iio/dac/ad5761.c
index 05017c8..e37e095 100644
--- a/kernel/drivers/iio/dac/ad5761.c
+++ b/kernel/drivers/iio/dac/ad5761.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* AD5721, AD5721R, AD5761, AD5761R, Voltage Output Digital to Analog Converter
*
* Copyright 2016 Qtechnology A/S
- * 2016 Ricardo Ribalda <ricardo.ribalda@gmail.com>
- *
- * Licensed under the GPL-2.
+ * 2016 Ricardo Ribalda <ribalda@kernel.org>
*/
#include <linux/kernel.h>
#include <linux/module.h>
@@ -58,11 +57,13 @@
* @use_intref: true when the internal voltage reference is used
* @vref: actual voltage reference in mVolts
* @range: output range mode used
+ * @lock: lock to protect the data buffer during SPI ops
* @data: cache aligned spi buffer
*/
struct ad5761_state {
struct spi_device *spi;
struct regulator *vref_reg;
+ struct mutex lock;
bool use_intref;
int vref;
@@ -125,9 +126,9 @@
struct ad5761_state *st = iio_priv(indio_dev);
int ret;
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
ret = _ad5761_spi_write(st, addr, val);
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret;
}
@@ -164,9 +165,9 @@
struct ad5761_state *st = iio_priv(indio_dev);
int ret;
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
ret = _ad5761_spi_read(st, addr, val);
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret;
}
@@ -369,11 +370,12 @@
if (pdata)
voltage_range = pdata->voltage_range;
+ mutex_init(&st->lock);
+
ret = ad5761_spi_set_range(st, voltage_range);
if (ret)
goto disable_regulator_err;
- iio_dev->dev.parent = &spi->dev;
iio_dev->info = &ad5761_info;
iio_dev->modes = INDIO_DIRECT_MODE;
iio_dev->channels = &chip_info->channel;
@@ -424,6 +426,6 @@
};
module_spi_driver(ad5761_driver);
-MODULE_AUTHOR("Ricardo Ribalda <ricardo.ribalda@gmail.com>");
+MODULE_AUTHOR("Ricardo Ribalda <ribalda@kernel.org>");
MODULE_DESCRIPTION("Analog Devices AD5721, AD5721R, AD5761, AD5761R driver");
MODULE_LICENSE("GPL v2");
--
Gitblit v1.6.2