From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/include/linux/iio/iio.h | 85 +++++++++++++++++++-----------------------
1 files changed, 39 insertions(+), 46 deletions(-)
diff --git a/kernel/include/linux/iio/iio.h b/kernel/include/linux/iio/iio.h
index 136ce51..f015fa1 100644
--- a/kernel/include/linux/iio/iio.h
+++ b/kernel/include/linux/iio/iio.h
@@ -1,11 +1,8 @@
+/* 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.
*/
#ifndef _INDUSTRIAL_IO_H_
#define _INDUSTRIAL_IO_H_
@@ -130,8 +127,8 @@
ssize_t iio_show_mount_matrix(struct iio_dev *indio_dev, uintptr_t priv,
const struct iio_chan_spec *chan, char *buf);
-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);
typedef const struct iio_mount_matrix *
(iio_get_mount_matrix_t)(const struct iio_dev *indio_dev,
@@ -491,11 +488,9 @@
* @currentmode: [DRIVER] current operating mode
* @dev: [DRIVER] device structure, should be assigned a parent
* and owner
- * @event_interface: [INTERN] event chrdevs associated with interrupt lines
* @buffer: [DRIVER] any buffer present
- * @buffer_list: [INTERN] list of all buffers currently attached
* @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux
- * @mlock: [DRIVER] lock used to prevent simultaneous device state
+ * @mlock: [INTERN] lock used to prevent simultaneous device state
* changes
* @available_scan_masks: [DRIVER] optional array of allowed bitmasks
* @masklength: [INTERN] the length of the mask established from
@@ -509,10 +504,8 @@
* @pollfunc_event: [DRIVER] function run on events trigger being received
* @channels: [DRIVER] channel specification structure table
* @num_channels: [DRIVER] number of channels specified in @channels.
- * @channel_attr_list: [INTERN] keep track of automatically created channel
- * attributes
- * @chan_attr_group: [INTERN] group for all attrs in base directory
* @name: [DRIVER] name of the device.
+ * @label: [DRIVER] unique name to identify which device this is
* @info: [DRIVER] callbacks and constant info from driver
* @clock_id: [INTERN] timestamping clock posix identifier
* @info_exist_lock: [INTERN] lock to prevent use during removal
@@ -522,8 +515,8 @@
* @groups: [INTERN] attribute groups
* @groupcounter: [INTERN] index of next attribute group
* @flags: [INTERN] file ops related flags including busy flag.
- * @debugfs_dentry: [INTERN] device specific debugfs dentry.
- * @cached_reg_addr: [INTERN] cached register address for debugfs reads.
+ * @priv: [DRIVER] reference to driver's private information
+ * **MUST** be accessed **ONLY** via iio_priv() helper
*/
struct iio_dev {
int id;
@@ -533,10 +526,7 @@
int currentmode;
struct device dev;
- struct iio_event_interface *event_interface;
-
struct iio_buffer *buffer;
- struct list_head buffer_list;
int scan_bytes;
struct mutex mlock;
@@ -553,9 +543,8 @@
struct iio_chan_spec const *channels;
int num_channels;
- struct list_head channel_attr_list;
- struct attribute_group chan_attr_group;
const char *name;
+ const char *label;
const struct iio_info *info;
clockid_t clock_id;
struct mutex info_exist_lock;
@@ -566,10 +555,7 @@
int groupcounter;
unsigned long flags;
-#if defined(CONFIG_DEBUG_FS)
- struct dentry *debugfs_dentry;
- unsigned cached_reg_addr;
-#endif
+ void *priv;
};
const struct iio_chan_spec
@@ -592,9 +578,6 @@
* calls iio_device_register() internally. Refer to that function for more
* information.
*
- * If an iio_dev registered with this function needs to be unregistered
- * separately, devm_iio_device_unregister() must be used.
- *
* RETURNS:
* 0 on success, negative error number on failure.
*/
@@ -602,7 +585,6 @@
__devm_iio_device_register((dev), (indio_dev), THIS_MODULE)
int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev,
struct module *this_mod);
-void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev);
int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp);
int iio_device_claim_direct_mode(struct iio_dev *indio_dev);
void iio_device_release_direct_mode(struct iio_dev *indio_dev);
@@ -628,6 +610,8 @@
return indio_dev->clock_id;
}
+int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id);
+
/**
* dev_to_iio_dev() - Get IIO device struct from a device struct
* @dev: The device embedded in the IIO device
@@ -650,6 +634,26 @@
return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL;
}
+/**
+ * iio_device_set_parent() - assign parent device to the IIO device object
+ * @indio_dev: IIO device structure
+ * @parent: reference to parent device object
+ *
+ * This utility must be called between IIO device allocation
+ * (via devm_iio_device_alloc()) & IIO device registration
+ * (via iio_device_register() and devm_iio_device_register())).
+ * By default, the device allocation will also assign a parent device to
+ * the IIO device object. In cases where devm_iio_device_alloc() is used,
+ * sometimes the parent device must be different than the device used to
+ * manage the allocation.
+ * In that case, this helper should be used to change the parent, hence the
+ * requirement to call this between allocation & registration.
+ **/
+static inline void iio_device_set_parent(struct iio_dev *indio_dev,
+ struct device *parent)
+{
+ indio_dev->dev.parent = parent;
+}
/**
* iio_device_set_drvdata() - Set device driver data
@@ -670,34 +674,26 @@
*
* Returns the data previously set with iio_device_set_drvdata()
*/
-static inline void *iio_device_get_drvdata(struct iio_dev *indio_dev)
+static inline void *iio_device_get_drvdata(const struct iio_dev *indio_dev)
{
return dev_get_drvdata(&indio_dev->dev);
}
/* Can we make this smaller? */
#define IIO_ALIGN L1_CACHE_BYTES
-struct iio_dev *iio_device_alloc(int sizeof_priv);
+struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv);
+/* The information at the returned address is guaranteed to be cacheline aligned */
static inline void *iio_priv(const struct iio_dev *indio_dev)
{
- return (char *)indio_dev + ALIGN(sizeof(struct iio_dev), IIO_ALIGN);
-}
-
-static inline struct iio_dev *iio_priv_to_dev(void *priv)
-{
- return (struct iio_dev *)((char *)priv -
- ALIGN(sizeof(struct iio_dev), IIO_ALIGN));
+ return indio_dev->priv;
}
void iio_device_free(struct iio_dev *indio_dev);
-int devm_iio_device_match(struct device *dev, void *res, void *data);
-struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv);
-void devm_iio_device_free(struct device *dev, struct iio_dev *indio_dev);
+struct iio_dev *devm_iio_device_alloc(struct device *parent, int sizeof_priv);
+__printf(2, 3)
struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
- const char *fmt, ...);
-void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig);
-
+ const char *fmt, ...);
/**
* iio_buffer_enabled() - helper function to test if the buffer is enabled
* @indio_dev: IIO device structure for device
@@ -714,10 +710,7 @@
* @indio_dev: IIO device structure for device
**/
#if defined(CONFIG_DEBUG_FS)
-static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
-{
- return indio_dev->debugfs_dentry;
-}
+struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev);
#else
static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
{
--
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