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/industrialio-core.c | 438 ++++++++++++++++++++++++++++++------------------------
1 files changed, 246 insertions(+), 192 deletions(-)
diff --git a/kernel/drivers/iio/industrialio-core.c b/kernel/drivers/iio/industrialio-core.c
index 49d4b4f..fc377e5 100644
--- a/kernel/drivers/iio/industrialio-core.c
+++ b/kernel/drivers/iio/industrialio-core.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/* The industrial I/O core
*
* Copyright (c) 2008 Jonathan Cameron
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
*
* Based on elements of hwmon and input subsystems.
*/
@@ -19,6 +16,7 @@
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/poll.h>
+#include <linux/property.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/cdev.h>
@@ -27,6 +25,7 @@
#include <linux/debugfs.h>
#include <linux/mutex.h>
#include <linux/iio/iio.h>
+#include <linux/iio/iio-opaque.h>
#include "iio_core.h"
#include "iio_core_trigger.h"
#include <linux/iio/sysfs.h>
@@ -87,6 +86,17 @@
[IIO_GRAVITY] = "gravity",
[IIO_POSITIONRELATIVE] = "positionrelative",
[IIO_PHASE] = "phase",
+ [IIO_MASSCONCENTRATION] = "massconcentration",
+#ifdef CONFIG_NO_GKI
+ [IIO_SIGN_MOTION] = "signmotion",
+ [IIO_STEP_DETECTOR] = "stepdetector",
+ [IIO_STEP_COUNTER] = "stepcounter",
+ [IIO_TILT] = "tilt",
+ [IIO_TAP] = "tap",
+ [IIO_TAP_TAP] = "taptap",
+ [IIO_WRIST_TILT_GESTURE] = "wristtiltgesture",
+ [IIO_GESTURE] = "gesture",
+#endif
};
static const char * const iio_modifier_names[] = {
@@ -127,6 +137,13 @@
[IIO_MOD_Q] = "q",
[IIO_MOD_CO2] = "co2",
[IIO_MOD_VOC] = "voc",
+ [IIO_MOD_PM1] = "pm1",
+ [IIO_MOD_PM2P5] = "pm2p5",
+ [IIO_MOD_PM4] = "pm4",
+ [IIO_MOD_PM10] = "pm10",
+ [IIO_MOD_ETHANOL] = "ethanol",
+ [IIO_MOD_H2] = "h2",
+ [IIO_MOD_O2] = "o2",
};
/* relies on pairs of these shared then separate */
@@ -158,7 +175,22 @@
[IIO_CHAN_INFO_DEBOUNCE_TIME] = "debounce_time",
[IIO_CHAN_INFO_CALIBEMISSIVITY] = "calibemissivity",
[IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio",
+ [IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type",
+ [IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient",
};
+
+#if defined(CONFIG_DEBUG_FS)
+/*
+ * There's also a CONFIG_DEBUG_FS guard in include/linux/iio/iio.h for
+ * iio_get_debugfs_dentry() to make it inline if CONFIG_DEBUG_FS is undefined
+ */
+struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
+{
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+ return iio_dev_opaque->debugfs_dentry;
+}
+EXPORT_SYMBOL_GPL(iio_get_debugfs_dentry);
+#endif
/**
* iio_find_channel_from_si() - get channel from its scan index
@@ -185,10 +217,16 @@
}
EXPORT_SYMBOL(iio_read_const_attr);
-static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
+/**
+ * iio_device_set_clock() - Set current timestamping clock for the device
+ * @indio_dev: IIO device structure containing the device
+ * @clock_id: timestamping clock posix identifier to set.
+ */
+int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
{
int ret;
- const struct iio_event_interface *ev_int = indio_dev->event_interface;
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+ const struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
ret = mutex_lock_interruptible(&indio_dev->mlock);
if (ret)
@@ -203,6 +241,7 @@
return 0;
}
+EXPORT_SYMBOL(iio_device_set_clock);
/**
* iio_get_time_ns() - utility function to get a time stamp for events etc
@@ -225,9 +264,9 @@
ktime_get_coarse_ts64(&tp);
return timespec64_to_ns(&tp);
case CLOCK_BOOTTIME:
- return ktime_get_boot_ns();
+ return ktime_get_boottime_ns();
case CLOCK_TAI:
- return ktime_get_tai_ns();
+ return ktime_get_clocktai_ns();
default:
BUG();
}
@@ -297,28 +336,37 @@
size_t count, loff_t *ppos)
{
struct iio_dev *indio_dev = file->private_data;
- char buf[20];
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
unsigned val = 0;
- ssize_t len;
int ret;
+ if (*ppos > 0)
+ return simple_read_from_buffer(userbuf, count, ppos,
+ iio_dev_opaque->read_buf,
+ iio_dev_opaque->read_buf_len);
+
ret = indio_dev->info->debugfs_reg_access(indio_dev,
- indio_dev->cached_reg_addr,
+ iio_dev_opaque->cached_reg_addr,
0, &val);
if (ret) {
dev_err(indio_dev->dev.parent, "%s: read failed\n", __func__);
return ret;
}
- len = snprintf(buf, sizeof(buf), "0x%X\n", val);
+ iio_dev_opaque->read_buf_len = snprintf(iio_dev_opaque->read_buf,
+ sizeof(iio_dev_opaque->read_buf),
+ "0x%X\n", val);
- return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+ return simple_read_from_buffer(userbuf, count, ppos,
+ iio_dev_opaque->read_buf,
+ iio_dev_opaque->read_buf_len);
}
static ssize_t iio_debugfs_write_reg(struct file *file,
const char __user *userbuf, size_t count, loff_t *ppos)
{
struct iio_dev *indio_dev = file->private_data;
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
unsigned reg, val;
char buf[80];
int ret;
@@ -333,10 +381,10 @@
switch (ret) {
case 1:
- indio_dev->cached_reg_addr = reg;
+ iio_dev_opaque->cached_reg_addr = reg;
break;
case 2:
- indio_dev->cached_reg_addr = reg;
+ iio_dev_opaque->cached_reg_addr = reg;
ret = indio_dev->info->debugfs_reg_access(indio_dev, reg,
val, NULL);
if (ret) {
@@ -360,42 +408,33 @@
static void iio_device_unregister_debugfs(struct iio_dev *indio_dev)
{
- debugfs_remove_recursive(indio_dev->debugfs_dentry);
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+ debugfs_remove_recursive(iio_dev_opaque->debugfs_dentry);
}
-static int iio_device_register_debugfs(struct iio_dev *indio_dev)
+static void iio_device_register_debugfs(struct iio_dev *indio_dev)
{
- struct dentry *d;
+ struct iio_dev_opaque *iio_dev_opaque;
if (indio_dev->info->debugfs_reg_access == NULL)
- return 0;
+ return;
if (!iio_debugfs_dentry)
- return 0;
+ return;
- indio_dev->debugfs_dentry =
+ iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+ iio_dev_opaque->debugfs_dentry =
debugfs_create_dir(dev_name(&indio_dev->dev),
iio_debugfs_dentry);
- if (indio_dev->debugfs_dentry == NULL) {
- dev_warn(indio_dev->dev.parent,
- "Failed to create debugfs directory\n");
- return -EFAULT;
- }
- d = debugfs_create_file("direct_reg_access", 0644,
- indio_dev->debugfs_dentry,
- indio_dev, &iio_debugfs_reg_fops);
- if (!d) {
- iio_device_unregister_debugfs(indio_dev);
- return -ENOMEM;
- }
-
- return 0;
+ debugfs_create_file("direct_reg_access", 0644,
+ iio_dev_opaque->debugfs_dentry, indio_dev,
+ &iio_debugfs_reg_fops);
}
#else
-static int iio_device_register_debugfs(struct iio_dev *indio_dev)
+static void iio_device_register_debugfs(struct iio_dev *indio_dev)
{
- return 0;
}
static void iio_device_unregister_debugfs(struct iio_dev *indio_dev)
@@ -525,8 +564,8 @@
EXPORT_SYMBOL_GPL(iio_show_mount_matrix);
/**
- * of_iio_read_mount_matrix() - retrieve iio device mounting matrix from
- * device-tree "mount-matrix" property
+ * iio_read_mount_matrix() - retrieve iio device mounting matrix from
+ * device "mount-matrix" property
* @dev: device the mounting matrix property is assigned to
* @propname: device specific mounting matrix property name
* @matrix: where to store retrieved matrix
@@ -536,40 +575,29 @@
*
* Return: 0 if success, or a negative error code on failure.
*/
-#ifdef CONFIG_OF
-int of_iio_read_mount_matrix(const struct device *dev,
- const char *propname,
- struct iio_mount_matrix *matrix)
+int iio_read_mount_matrix(struct device *dev, const char *propname,
+ struct iio_mount_matrix *matrix)
{
- if (dev->of_node) {
- int err = of_property_read_string_array(dev->of_node,
- propname, matrix->rotation,
- ARRAY_SIZE(iio_mount_idmatrix.rotation));
+ size_t len = ARRAY_SIZE(iio_mount_idmatrix.rotation);
+ int err;
- if (err == ARRAY_SIZE(iio_mount_idmatrix.rotation))
- return 0;
+ err = device_property_read_string_array(dev, propname,
+ matrix->rotation, len);
+ if (err == len)
+ return 0;
- if (err >= 0)
- /* Invalid number of matrix entries. */
- return -EINVAL;
+ if (err >= 0)
+ /* Invalid number of matrix entries. */
+ return -EINVAL;
- if (err != -EINVAL)
- /* Invalid matrix declaration format. */
- return err;
- }
+ if (err != -EINVAL)
+ /* Invalid matrix declaration format. */
+ return err;
/* Matrix was not declared at all: fallback to identity. */
return iio_setup_mount_idmatrix(dev, matrix);
}
-#else
-int of_iio_read_mount_matrix(const struct device *dev,
- const char *propname,
- struct iio_mount_matrix *matrix)
-{
- return iio_setup_mount_idmatrix(dev, matrix);
-}
-#endif
-EXPORT_SYMBOL(of_iio_read_mount_matrix);
+EXPORT_SYMBOL(iio_read_mount_matrix);
static ssize_t __iio_format_value(char *buf, size_t len, unsigned int type,
int size, const int *vals)
@@ -580,44 +608,46 @@
switch (type) {
case IIO_VAL_INT:
- return snprintf(buf, len, "%d", vals[0]);
+ return scnprintf(buf, len, "%d", vals[0]);
case IIO_VAL_INT_PLUS_MICRO_DB:
scale_db = true;
- /* fall through */
+ fallthrough;
case IIO_VAL_INT_PLUS_MICRO:
if (vals[1] < 0)
- return snprintf(buf, len, "-%d.%06u%s", abs(vals[0]),
+ return scnprintf(buf, len, "-%d.%06u%s", abs(vals[0]),
-vals[1], scale_db ? " dB" : "");
else
- return snprintf(buf, len, "%d.%06u%s", vals[0], vals[1],
+ return scnprintf(buf, len, "%d.%06u%s", vals[0], vals[1],
scale_db ? " dB" : "");
case IIO_VAL_INT_PLUS_NANO:
if (vals[1] < 0)
- return snprintf(buf, len, "-%d.%09u", abs(vals[0]),
+ return scnprintf(buf, len, "-%d.%09u", abs(vals[0]),
-vals[1]);
else
- return snprintf(buf, len, "%d.%09u", vals[0], vals[1]);
+ return scnprintf(buf, len, "%d.%09u", vals[0], vals[1]);
case IIO_VAL_FRACTIONAL:
tmp = div_s64((s64)vals[0] * 1000000000LL, vals[1]);
tmp1 = vals[1];
tmp0 = (int)div_s64_rem(tmp, 1000000000, &tmp1);
- return snprintf(buf, len, "%d.%09u", tmp0, abs(tmp1));
+ return scnprintf(buf, len, "%d.%09u", tmp0, abs(tmp1));
case IIO_VAL_FRACTIONAL_LOG2:
tmp = shift_right((s64)vals[0] * 1000000000LL, vals[1]);
tmp0 = (int)div_s64_rem(tmp, 1000000000LL, &tmp1);
- return snprintf(buf, len, "%d.%09u", tmp0, abs(tmp1));
+ return scnprintf(buf, len, "%d.%09u", tmp0, abs(tmp1));
case IIO_VAL_INT_MULTIPLE:
{
int i;
int l = 0;
for (i = 0; i < size; ++i) {
- l += snprintf(&buf[l], len - l, "%d ", vals[i]);
+ l += scnprintf(&buf[l], len - l, "%d ", vals[i]);
if (l >= len)
break;
}
return l;
}
+ case IIO_VAL_CHAR:
+ return scnprintf(buf, len, "%c", (char)vals[0]);
default:
return 0;
}
@@ -688,10 +718,10 @@
if (len >= PAGE_SIZE)
return -EFBIG;
if (i < length - 1)
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
" ");
else
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"\n");
if (len >= PAGE_SIZE)
return -EFBIG;
@@ -704,10 +734,10 @@
if (len >= PAGE_SIZE)
return -EFBIG;
if (i < length / 2 - 1)
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
" ");
else
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"\n");
if (len >= PAGE_SIZE)
return -EFBIG;
@@ -731,10 +761,10 @@
if (len >= PAGE_SIZE)
return -EFBIG;
if (i < 2)
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
" ");
else
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"]\n");
if (len >= PAGE_SIZE)
return -EFBIG;
@@ -747,10 +777,10 @@
if (len >= PAGE_SIZE)
return -EFBIG;
if (i < 2)
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
" ");
else
- len += snprintf(buf + len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"]\n");
if (len >= PAGE_SIZE)
return -EFBIG;
@@ -788,17 +818,18 @@
}
/**
- * iio_str_to_fixpoint() - Parse a fixed-point number from a string
+ * __iio_str_to_fixpoint() - Parse a fixed-point number from a string
* @str: The string to parse
* @fract_mult: Multiplier for the first decimal place, should be a power of 10
* @integer: The integer part of the number
* @fract: The fractional part of the number
+ * @scale_db: True if this should parse as dB
*
* Returns 0 on success, or a negative error code if the string could not be
* parsed.
*/
-int iio_str_to_fixpoint(const char *str, int fract_mult,
- int *integer, int *fract)
+static int __iio_str_to_fixpoint(const char *str, int fract_mult,
+ int *integer, int *fract, bool scale_db)
{
int i = 0, f = 0;
bool integer_part = true, negative = false;
@@ -829,6 +860,14 @@
break;
else
return -EINVAL;
+ } else if (!strncmp(str, " dB", sizeof(" dB") - 1) && scale_db) {
+ /* Ignore the dB suffix */
+ str += sizeof(" dB") - 1;
+ continue;
+ } else if (!strncmp(str, "dB", sizeof("dB") - 1) && scale_db) {
+ /* Ignore the dB suffix */
+ str += sizeof("dB") - 1;
+ continue;
} else if (*str == '.' && integer_part) {
integer_part = false;
} else {
@@ -849,6 +888,22 @@
return 0;
}
+
+/**
+ * iio_str_to_fixpoint() - Parse a fixed-point number from a string
+ * @str: The string to parse
+ * @fract_mult: Multiplier for the first decimal place, should be a power of 10
+ * @integer: The integer part of the number
+ * @fract: The fractional part of the number
+ *
+ * Returns 0 on success, or a negative error code if the string could not be
+ * parsed.
+ */
+int iio_str_to_fixpoint(const char *str, int fract_mult,
+ int *integer, int *fract)
+{
+ return __iio_str_to_fixpoint(str, fract_mult, integer, fract, false);
+}
EXPORT_SYMBOL_GPL(iio_str_to_fixpoint);
static ssize_t iio_write_channel_info(struct device *dev,
@@ -859,7 +914,9 @@
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
int ret, fract_mult = 100000;
- int integer, fract;
+ int integer, fract = 0;
+ bool is_char = false;
+ bool scale_db = false;
/* Assumes decimal - precision based on number of digits */
if (!indio_dev->info->write_raw)
@@ -871,19 +928,34 @@
case IIO_VAL_INT:
fract_mult = 0;
break;
+ case IIO_VAL_INT_PLUS_MICRO_DB:
+ scale_db = true;
+ fallthrough;
case IIO_VAL_INT_PLUS_MICRO:
fract_mult = 100000;
break;
case IIO_VAL_INT_PLUS_NANO:
fract_mult = 100000000;
break;
+ case IIO_VAL_CHAR:
+ is_char = true;
+ break;
default:
return -EINVAL;
}
- ret = iio_str_to_fixpoint(buf, fract_mult, &integer, &fract);
- if (ret)
- return ret;
+ if (is_char) {
+ char ch;
+
+ if (sscanf(buf, "%c", &ch) != 1)
+ return -EINVAL;
+ integer = ch;
+ } else {
+ ret = __iio_str_to_fixpoint(buf, fract_mult, &integer, &fract,
+ scale_db);
+ if (ret)
+ return ret;
+ }
ret = indio_dev->info->write_raw(indio_dev, this_attr->c,
integer, fract, this_attr->address);
@@ -1080,6 +1152,7 @@
enum iio_shared_by shared_by,
const long *infomask)
{
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
int i, ret, attrcount = 0;
for_each_set_bit(i, infomask, sizeof(*infomask)*8) {
@@ -1092,7 +1165,7 @@
i,
shared_by,
&indio_dev->dev,
- &indio_dev->channel_attr_list);
+ &iio_dev_opaque->channel_attr_list);
if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE))
continue;
else if (ret < 0)
@@ -1108,10 +1181,13 @@
enum iio_shared_by shared_by,
const long *infomask)
{
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
int i, ret, attrcount = 0;
char *avail_postfix;
for_each_set_bit(i, infomask, sizeof(*infomask) * 8) {
+ if (i >= ARRAY_SIZE(iio_chan_info_postfix))
+ return -EINVAL;
avail_postfix = kasprintf(GFP_KERNEL,
"%s_available",
iio_chan_info_postfix[i]);
@@ -1125,7 +1201,7 @@
i,
shared_by,
&indio_dev->dev,
- &indio_dev->channel_attr_list);
+ &iio_dev_opaque->channel_attr_list);
kfree(avail_postfix);
if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE))
continue;
@@ -1140,6 +1216,7 @@
static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan)
{
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
int ret, attrcount = 0;
const struct iio_chan_spec_ext_info *ext_info;
@@ -1215,7 +1292,7 @@
i,
ext_info->shared,
&indio_dev->dev,
- &indio_dev->channel_attr_list);
+ &iio_dev_opaque->channel_attr_list);
i++;
if (ret == -EBUSY && ext_info->shared)
continue;
@@ -1257,6 +1334,16 @@
}
static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
+
+static ssize_t iio_show_dev_label(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ return snprintf(buf, PAGE_SIZE, "%s\n", indio_dev->label);
+}
+
+static DEVICE_ATTR(label, S_IRUGO, iio_show_dev_label, NULL);
static ssize_t iio_show_timestamp_clock(struct device *dev,
struct device_attribute *attr,
@@ -1340,6 +1427,7 @@
static int iio_device_register_sysfs(struct iio_dev *indio_dev)
{
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
int i, ret = 0, attrcount, attrn, attrcount_orig = 0;
struct iio_dev_attr *p;
struct attribute **attr, *clk = NULL;
@@ -1369,58 +1457,66 @@
attrcount += ret;
}
- if (indio_dev->event_interface)
+ if (iio_dev_opaque->event_interface)
clk = &dev_attr_current_timestamp_clock.attr;
if (indio_dev->name)
attrcount++;
+ if (indio_dev->label)
+ attrcount++;
if (clk)
attrcount++;
- indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1,
- sizeof(indio_dev->chan_attr_group.attrs[0]),
- GFP_KERNEL);
- if (indio_dev->chan_attr_group.attrs == NULL) {
+ iio_dev_opaque->chan_attr_group.attrs =
+ kcalloc(attrcount + 1,
+ sizeof(iio_dev_opaque->chan_attr_group.attrs[0]),
+ GFP_KERNEL);
+ if (iio_dev_opaque->chan_attr_group.attrs == NULL) {
ret = -ENOMEM;
goto error_clear_attrs;
}
/* Copy across original attributes */
if (indio_dev->info->attrs)
- memcpy(indio_dev->chan_attr_group.attrs,
+ memcpy(iio_dev_opaque->chan_attr_group.attrs,
indio_dev->info->attrs->attrs,
- sizeof(indio_dev->chan_attr_group.attrs[0])
+ sizeof(iio_dev_opaque->chan_attr_group.attrs[0])
*attrcount_orig);
attrn = attrcount_orig;
/* Add all elements from the list. */
- list_for_each_entry(p, &indio_dev->channel_attr_list, l)
- indio_dev->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
+ list_for_each_entry(p, &iio_dev_opaque->channel_attr_list, l)
+ iio_dev_opaque->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
if (indio_dev->name)
- indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
+ iio_dev_opaque->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
+ if (indio_dev->label)
+ iio_dev_opaque->chan_attr_group.attrs[attrn++] = &dev_attr_label.attr;
if (clk)
- indio_dev->chan_attr_group.attrs[attrn++] = clk;
+ iio_dev_opaque->chan_attr_group.attrs[attrn++] = clk;
indio_dev->groups[indio_dev->groupcounter++] =
- &indio_dev->chan_attr_group;
+ &iio_dev_opaque->chan_attr_group;
return 0;
error_clear_attrs:
- iio_free_chan_devattr_list(&indio_dev->channel_attr_list);
+ iio_free_chan_devattr_list(&iio_dev_opaque->channel_attr_list);
return ret;
}
static void iio_device_unregister_sysfs(struct iio_dev *indio_dev)
{
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
- iio_free_chan_devattr_list(&indio_dev->channel_attr_list);
- kfree(indio_dev->chan_attr_group.attrs);
- indio_dev->chan_attr_group.attrs = NULL;
+ iio_free_chan_devattr_list(&iio_dev_opaque->channel_attr_list);
+ kfree(iio_dev_opaque->chan_attr_group.attrs);
+ iio_dev_opaque->chan_attr_group.attrs = NULL;
}
static void iio_dev_release(struct device *device)
{
struct iio_dev *indio_dev = dev_to_iio_dev(device);
+ struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
if (indio_dev->modes & INDIO_ALL_TRIGGERED_MODES)
iio_device_unregister_trigger_consumer(indio_dev);
iio_device_unregister_eventset(indio_dev);
@@ -1429,7 +1525,7 @@
iio_buffer_put(indio_dev->buffer);
ida_simple_remove(&iio_ida, indio_dev->id);
- kfree(indio_dev);
+ kfree(iio_dev_opaque);
}
struct device_type iio_device_type = {
@@ -1439,43 +1535,48 @@
/**
* iio_device_alloc() - allocate an iio_dev from a driver
+ * @parent: Parent device.
* @sizeof_priv: Space to allocate for private structure.
**/
-struct iio_dev *iio_device_alloc(int sizeof_priv)
+struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv)
{
+ struct iio_dev_opaque *iio_dev_opaque;
struct iio_dev *dev;
size_t alloc_size;
- alloc_size = sizeof(struct iio_dev);
+ alloc_size = sizeof(struct iio_dev_opaque);
if (sizeof_priv) {
alloc_size = ALIGN(alloc_size, IIO_ALIGN);
alloc_size += sizeof_priv;
}
- /* ensure 32-byte alignment of whole construct ? */
- alloc_size += IIO_ALIGN - 1;
- dev = kzalloc(alloc_size, GFP_KERNEL);
+ iio_dev_opaque = kzalloc(alloc_size, GFP_KERNEL);
+ if (!iio_dev_opaque)
+ return NULL;
- if (dev) {
- dev->dev.groups = dev->groups;
- dev->dev.type = &iio_device_type;
- dev->dev.bus = &iio_bus_type;
- device_initialize(&dev->dev);
- dev_set_drvdata(&dev->dev, (void *)dev);
- mutex_init(&dev->mlock);
- mutex_init(&dev->info_exist_lock);
- INIT_LIST_HEAD(&dev->channel_attr_list);
+ dev = &iio_dev_opaque->indio_dev;
+ dev->priv = (char *)iio_dev_opaque +
+ ALIGN(sizeof(struct iio_dev_opaque), IIO_ALIGN);
- dev->id = ida_simple_get(&iio_ida, 0, 0, GFP_KERNEL);
- if (dev->id < 0) {
- /* cannot use a dev_err as the name isn't available */
- pr_err("failed to get device id\n");
- kfree(dev);
- return NULL;
- }
- dev_set_name(&dev->dev, "iio:device%d", dev->id);
- INIT_LIST_HEAD(&dev->buffer_list);
+ dev->dev.parent = parent;
+ dev->dev.groups = dev->groups;
+ dev->dev.type = &iio_device_type;
+ dev->dev.bus = &iio_bus_type;
+ device_initialize(&dev->dev);
+ dev_set_drvdata(&dev->dev, (void *)dev);
+ mutex_init(&dev->mlock);
+ mutex_init(&dev->info_exist_lock);
+ INIT_LIST_HEAD(&iio_dev_opaque->channel_attr_list);
+
+ dev->id = ida_simple_get(&iio_ida, 0, 0, GFP_KERNEL);
+ if (dev->id < 0) {
+ /* cannot use a dev_err as the name isn't available */
+ pr_err("failed to get device id\n");
+ kfree(iio_dev_opaque);
+ return NULL;
}
+ dev_set_name(&dev->dev, "iio:device%d", dev->id);
+ INIT_LIST_HEAD(&iio_dev_opaque->buffer_list);
return dev;
}
@@ -1497,32 +1598,18 @@
iio_device_free(*(struct iio_dev **)res);
}
-int devm_iio_device_match(struct device *dev, void *res, void *data)
-{
- struct iio_dev **r = res;
- if (!r || !*r) {
- WARN_ON(!r || !*r);
- return 0;
- }
- return *r == data;
-}
-EXPORT_SYMBOL_GPL(devm_iio_device_match);
-
/**
* devm_iio_device_alloc - Resource-managed iio_device_alloc()
- * @dev: Device to allocate iio_dev for
+ * @parent: Device to allocate iio_dev for, and parent for this IIO device
* @sizeof_priv: Space to allocate for private structure.
*
* Managed iio_device_alloc. iio_dev allocated with this function is
* automatically freed on driver detach.
*
- * If an iio_dev allocated with this function needs to be freed separately,
- * devm_iio_device_free() must be used.
- *
* RETURNS:
* Pointer to allocated iio_dev on success, NULL on failure.
*/
-struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv)
+struct iio_dev *devm_iio_device_alloc(struct device *parent, int sizeof_priv)
{
struct iio_dev **ptr, *iio_dev;
@@ -1531,10 +1618,10 @@
if (!ptr)
return NULL;
- iio_dev = iio_device_alloc(sizeof_priv);
+ iio_dev = iio_device_alloc(parent, sizeof_priv);
if (iio_dev) {
*ptr = iio_dev;
- devres_add(dev, ptr);
+ devres_add(parent, ptr);
} else {
devres_free(ptr);
}
@@ -1542,23 +1629,6 @@
return iio_dev;
}
EXPORT_SYMBOL_GPL(devm_iio_device_alloc);
-
-/**
- * devm_iio_device_free - Resource-managed iio_device_free()
- * @dev: Device this iio_dev belongs to
- * @iio_dev: the iio_dev associated with the device
- *
- * Free iio_dev allocated with devm_iio_device_alloc().
- */
-void devm_iio_device_free(struct device *dev, struct iio_dev *iio_dev)
-{
- int rc;
-
- rc = devres_release(dev, devm_iio_device_release,
- devm_iio_device_match, iio_dev);
- WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_iio_device_free);
/**
* iio_chrdev_open() - chrdev file open for buffer access and ioctls
@@ -1623,14 +1693,14 @@
}
static const struct file_operations iio_buffer_fileops = {
- .read = iio_buffer_read_first_n_outer_addr,
+ .read = iio_buffer_read_outer_addr,
.release = iio_chrdev_release,
.open = iio_chrdev_open,
.poll = iio_buffer_poll_addr,
.owner = THIS_MODULE,
.llseek = noop_llseek,
.unlocked_ioctl = iio_ioctl,
- .compat_ioctl = iio_ioctl,
+ .compat_ioctl = compat_ptr_ioctl,
};
static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
@@ -1662,10 +1732,16 @@
{
int ret;
+ if (!indio_dev->info)
+ return -EINVAL;
+
indio_dev->driver_module = this_mod;
/* If the calling driver did not initialize of_node, do it here */
if (!indio_dev->dev.of_node && indio_dev->dev.parent)
indio_dev->dev.of_node = indio_dev->dev.parent->of_node;
+
+ indio_dev->label = of_get_property(indio_dev->dev.of_node, "label",
+ NULL);
ret = iio_check_unique_scan_index(indio_dev);
if (ret < 0)
@@ -1674,12 +1750,7 @@
/* configure elements for the chrdev */
indio_dev->dev.devt = MKDEV(MAJOR(iio_devt), indio_dev->id);
- ret = iio_device_register_debugfs(indio_dev);
- if (ret) {
- dev_err(indio_dev->dev.parent,
- "Failed to register debugfs interfaces\n");
- return ret;
- }
+ iio_device_register_debugfs(indio_dev);
ret = iio_buffer_alloc_sysfs_and_mask(indio_dev);
if (ret) {
@@ -1779,23 +1850,6 @@
return ret;
}
EXPORT_SYMBOL_GPL(__devm_iio_device_register);
-
-/**
- * devm_iio_device_unregister - Resource-managed iio_device_unregister()
- * @dev: Device this iio_dev belongs to
- * @indio_dev: the iio_dev associated with the device
- *
- * Unregister iio_dev registered with devm_iio_device_register().
- */
-void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev)
-{
- int rc;
-
- rc = devres_release(dev, devm_iio_device_unreg,
- devm_iio_device_match, indio_dev);
- WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_iio_device_unregister);
/**
* iio_device_claim_direct_mode - Keep device in direct mode
--
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