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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 13:31:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 13:31:29 -0700
commite0dccbdf5ac7ccb9da5612100dedba302f3ebcfe (patch)
tree0bdabbf13844ae18da61bc060348850a8038f0ba /drivers/staging/iio/impedance-analyzer/ad5933.c
parentcf482a49af564a3044de3178ea28f10ad5921b38 (diff)
parente2a5be107f52cefb9010ccae6f569c3ddaa954cc (diff)
Merge tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / IIO driver updates from Greg KH: "Here is the big staging and iio driver update for 5.2-rc1. Lots of tiny fixes all over the staging and IIO driver trees here, along with some new IIO drivers. The "counter" subsystem was added in here as well, as it is needed by the IIO drivers and subsystem. Also we ended up deleting two drivers, making this pull request remove a few hundred thousand lines of code, always a nice thing to see. Both of the drivers removed have been replaced with "real" drivers in their various subsystem directories, and they will be coming to you from those locations during this merge window. There are some core vt/selection changes in here, that was due to some cleanups needed for the speakup fixes. Those have all been acked by the various subsystem maintainers (i.e. me), so those are ok. We also added a few new drivers, for some odd hardware, giving new developers plenty to work on with basic coding style cleanups to come in the near future. Other than that, nothing unusual here. All of these have been in linux-next for a while with no reported issues, other than an odd gcc warning for one of the new drivers that should be fixed up soon" [ I fixed up the warning myself - Linus ] * tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (663 commits) staging: kpc2000: kpc_spi: Fix build error for {read,write}q Staging: rtl8192e: Remove extra space before break statement Staging: rtl8192u: ieee80211: Fix if-else indentation warning Staging: rtl8192u: ieee80211: Fix indentation errors by removing extra spaces staging: most: cdev: fix chrdev_region leak in mod_exit staging: wlan-ng: Fix improper SPDX comment style staging: rtl8192u: ieee80211: Resolve ERROR reported by checkpatch staging: vc04_services: bcm2835-camera: Compress two lines into one line staging: rtl8723bs: core: Use !x in place of NULL comparison. staging: rtl8723bs: core: Prefer using the BIT Macro. staging: fieldbus: anybus-s: fix wait_for_completion_timeout return handling staging: kpc2000: fix up build problems with readq() staging: rtlwifi: move remaining phydm .h files staging: rtlwifi: strip down phydm .h files staging: rtlwifi: delete the staging driver staging: fieldbus: anybus-s: rename bus id field to avoid confusion staging: fieldbus: anybus-s: keep device bus id in bus endianness Staging: sm750fb: Change *array into *const array staging: rtl8192u: ieee80211: Fix spelling mistake staging: rtl8192u: ieee80211: Replace bit shifting with BIT macro ...
Diffstat (limited to 'drivers/staging/iio/impedance-analyzer/ad5933.c')
-rw-r--r--drivers/staging/iio/impedance-analyzer/ad5933.c58
1 files changed, 30 insertions, 28 deletions
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index 3134295f014f..af0bcf95ee8a 100644
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -1,27 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* AD5933 AD5934 Impedance Converter, Network Analyzer
*
* Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
*/
-#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/sysfs.h>
+#include <linux/err.h>
#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/regulator/consumer.h>
+#include <linux/sysfs.h>
#include <linux/types.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
/* AD5933/AD5934 Registers */
#define AD5933_REG_CONTROL_HB 0x80 /* R/W, 1 byte */
@@ -284,7 +283,7 @@ static ssize_t ad5933_show_frequency(struct device *dev,
freqreg = be32_to_cpu(dat.d32) & 0xFFFFFF;
freqreg = (u64)freqreg * (u64)(st->mclk_hz / 4);
- do_div(freqreg, 1 << 27);
+ do_div(freqreg, BIT(27));
return sprintf(buf, "%d\n", (int)freqreg);
}
@@ -316,12 +315,12 @@ static ssize_t ad5933_store_frequency(struct device *dev,
return ret ? ret : len;
}
-static IIO_DEVICE_ATTR(out_voltage0_freq_start, 0644,
+static IIO_DEVICE_ATTR(out_altvoltage0_frequency_start, 0644,
ad5933_show_frequency,
ad5933_store_frequency,
AD5933_REG_FREQ_START);
-static IIO_DEVICE_ATTR(out_voltage0_freq_increment, 0644,
+static IIO_DEVICE_ATTR(out_altvoltage0_frequency_increment, 0644,
ad5933_show_frequency,
ad5933_store_frequency,
AD5933_REG_FREQ_INC);
@@ -420,7 +419,7 @@ static ssize_t ad5933_store(struct device *dev,
if (val > 1022)
val = (val >> 2) | (3 << 9);
else if (val > 511)
- val = (val >> 1) | (1 << 9);
+ val = (val >> 1) | BIT(9);
dat = cpu_to_be16(val);
ret = ad5933_i2c_write(st->client,
@@ -444,12 +443,12 @@ static ssize_t ad5933_store(struct device *dev,
return ret ? ret : len;
}
-static IIO_DEVICE_ATTR(out_voltage0_scale, 0644,
+static IIO_DEVICE_ATTR(out_altvoltage0_raw, 0644,
ad5933_show,
ad5933_store,
AD5933_OUT_RANGE);
-static IIO_DEVICE_ATTR(out_voltage0_scale_available, 0444,
+static IIO_DEVICE_ATTR(out_altvoltage0_scale_available, 0444,
ad5933_show,
NULL,
AD5933_OUT_RANGE_AVAIL);
@@ -464,28 +463,29 @@ static IIO_DEVICE_ATTR(in_voltage0_scale_available, 0444,
NULL,
AD5933_IN_PGA_GAIN_AVAIL);
-static IIO_DEVICE_ATTR(out_voltage0_freq_points, 0644,
+static IIO_DEVICE_ATTR(out_altvoltage0_frequency_points, 0644,
ad5933_show,
ad5933_store,
AD5933_FREQ_POINTS);
-static IIO_DEVICE_ATTR(out_voltage0_settling_cycles, 0644,
+static IIO_DEVICE_ATTR(out_altvoltage0_settling_cycles, 0644,
ad5933_show,
ad5933_store,
AD5933_OUT_SETTLING_CYCLES);
-/* note:
+/*
+ * note:
* ideally we would handle the scale attributes via the iio_info
* (read|write)_raw methods, however this part is a untypical since we
* don't create dedicated sysfs channel attributes for out0 and in0.
*/
static struct attribute *ad5933_attributes[] = {
- &iio_dev_attr_out_voltage0_scale.dev_attr.attr,
- &iio_dev_attr_out_voltage0_scale_available.dev_attr.attr,
- &iio_dev_attr_out_voltage0_freq_start.dev_attr.attr,
- &iio_dev_attr_out_voltage0_freq_increment.dev_attr.attr,
- &iio_dev_attr_out_voltage0_freq_points.dev_attr.attr,
- &iio_dev_attr_out_voltage0_settling_cycles.dev_attr.attr,
+ &iio_dev_attr_out_altvoltage0_raw.dev_attr.attr,
+ &iio_dev_attr_out_altvoltage0_scale_available.dev_attr.attr,
+ &iio_dev_attr_out_altvoltage0_frequency_start.dev_attr.attr,
+ &iio_dev_attr_out_altvoltage0_frequency_increment.dev_attr.attr,
+ &iio_dev_attr_out_altvoltage0_frequency_points.dev_attr.attr,
+ &iio_dev_attr_out_altvoltage0_settling_cycles.dev_attr.attr,
&iio_dev_attr_in_voltage0_scale.dev_attr.attr,
&iio_dev_attr_in_voltage0_scale_available.dev_attr.attr,
NULL
@@ -572,7 +572,8 @@ static int ad5933_ring_postenable(struct iio_dev *indio_dev)
{
struct ad5933_state *st = iio_priv(indio_dev);
- /* AD5933_CTRL_INIT_START_FREQ:
+ /*
+ * AD5933_CTRL_INIT_START_FREQ:
* High Q complex circuits require a long time to reach steady state.
* To facilitate the measurement of such impedances, this mode allows
* the user full control of the settling time requirement before
@@ -663,7 +664,8 @@ static void ad5933_work(struct work_struct *work)
}
if (status & AD5933_STAT_SWEEP_DONE) {
- /* last sample received - power down do
+ /*
+ * last sample received - power down do
* nothing until the ring enable is toggled
*/
ad5933_cmd(st, AD5933_CTRL_POWER_DOWN);