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/ad5360.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/kernel/drivers/iio/dac/ad5360.c b/kernel/drivers/iio/dac/ad5360.c
index 0209316..602dd2b 100644
--- a/kernel/drivers/iio/dac/ad5360.c
+++ b/kernel/drivers/iio/dac/ad5360.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Analog devices AD5360, AD5361, AD5362, AD5363, AD5370, AD5371, AD5373
* multi-channel Digital to Analog Converters driver
*
* Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
*/
#include <linux/device.h>
@@ -68,6 +67,7 @@
* @chip_info: chip model specific constants, available modes etc
* @vref_reg: vref supply regulators
* @ctrl: control register cache
+ * @lock: lock to protect the data buffer during SPI ops
* @data: spi transfer buffers
*/
@@ -76,6 +76,7 @@
const struct ad5360_chip_info *chip_info;
struct regulator_bulk_data vref_reg[3];
unsigned int ctrl;
+ struct mutex lock;
/*
* DMA (thus cache coherency maintenance) requires the
@@ -206,10 +207,11 @@
unsigned int addr, unsigned int val, unsigned int shift)
{
int ret;
+ struct ad5360_state *st = iio_priv(indio_dev);
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
ret = ad5360_write_unlocked(indio_dev, cmd, addr, val, shift);
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret;
}
@@ -230,7 +232,7 @@
},
};
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
st->data[0].d32 = cpu_to_be32(AD5360_CMD(AD5360_CMD_SPECIAL_FUNCTION) |
AD5360_ADDR(AD5360_REG_SF_READBACK) |
@@ -241,7 +243,7 @@
if (ret >= 0)
ret = be32_to_cpu(st->data[1].d32) & 0xffff;
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret;
}
@@ -262,7 +264,7 @@
struct ad5360_state *st = iio_priv(indio_dev);
unsigned int ret;
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
st->ctrl |= set;
st->ctrl &= ~clr;
@@ -270,7 +272,7 @@
ret = ad5360_write_unlocked(indio_dev, AD5360_CMD_SPECIAL_FUNCTION,
AD5360_REG_SF_CTRL, st->ctrl, 0);
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret;
}
@@ -474,12 +476,13 @@
st->chip_info = &ad5360_chip_info_tbl[type];
st->spi = spi;
- indio_dev->dev.parent = &spi->dev;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->info = &ad5360_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->num_channels = st->chip_info->num_channels;
+ mutex_init(&st->lock);
+
ret = ad5360_alloc_channels(indio_dev);
if (ret) {
dev_err(&spi->dev, "Failed to allocate channel spec: %d\n", ret);
--
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