The lirc kernel api sneaked its way in along with the lirc drivers; it
was terrible, but now the last step can be done to banish it forever.
All future drivers should use the rc-core api.
Signed-off-by: Sean Young <sean@xxxxxxxx>
---
Documentation/media/kapi/rc-core.rst | 5 --
drivers/media/rc/ir-lirc-codec.c | 42 +---------
drivers/media/rc/lirc_dev.c | 145 ++++++++++++-----------------------
drivers/media/rc/rc-core-priv.h | 3 +
drivers/media/rc/rc-main.c | 1 -
include/media/lirc_dev.h | 50 ------------
include/media/rc-core.h | 8 +-
7 files changed, 60 insertions(+), 194 deletions(-)
delete mode 100644 include/media/lirc_dev.h
diff --git a/Documentation/media/kapi/rc-core.rst b/Documentation/media/kapi/rc-core.rst
index a45895886257..41c2256dbf6a 100644
--- a/Documentation/media/kapi/rc-core.rst
+++ b/Documentation/media/kapi/rc-core.rst
@@ -7,8 +7,3 @@ Remote Controller core
.. kernel-doc:: include/media/rc-core.h
.. kernel-doc:: include/media/rc-map.h
-
-LIRC
-~~~~
-
-.. kernel-doc:: include/media/lirc_dev.h
diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index b6e20ddcd915..fb5df6c8208f 100644
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -12,10 +12,10 @@
* GNU General Public License for more details.
*/
+#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <media/lirc.h>
-#include <media/lirc_dev.h>
#include <media/rc-core.h>
#include "rc-core-priv.h"
@@ -90,8 +90,8 @@ void ir_lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev)
static int ir_lirc_open(struct inode *inode, struct file *file)
{
- struct lirc_dev *d = container_of(inode->i_cdev, struct lirc_dev, cdev);
- struct rc_dev *dev = d->rdev;
+ struct rc_dev *dev = container_of(inode->i_cdev, struct rc_dev,
+ lirc_cdev);
int retval;
retval = rc_open(dev);
@@ -511,7 +511,7 @@ static ssize_t ir_lirc_read(struct file *file, char __user *buffer,
return copied;
}
-static const struct file_operations lirc_fops = {
+const struct file_operations lirc_fops = {
.owner = THIS_MODULE,
.write = ir_lirc_transmit_ir,
.unlocked_ioctl = ir_lirc_ioctl,
@@ -524,37 +524,3 @@ static const struct file_operations lirc_fops = {
.release = ir_lirc_close,
.llseek = no_llseek,
};
-
-int ir_lirc_register(struct rc_dev *dev)
-{
- struct lirc_dev *ldev;
- int rc = -ENOMEM;
-
- ldev = lirc_allocate_device();
- if (!ldev)
- return rc;
-
- ldev->fops = &lirc_fops;
- ldev->dev.parent = &dev->dev;
- ldev->rdev = dev;
- ldev->owner = THIS_MODULE;
-
- rc = lirc_register_device(ldev);
- if (rc < 0)
- goto out;
-
- dev->send_mode = LIRC_MODE_PULSE;
-
- dev->lirc_dev = ldev;
- return 0;
-
-out:
- lirc_free_device(ldev);
- return rc;
-}
-
-void ir_lirc_unregister(struct rc_dev *dev)
-{
- lirc_unregister_device(dev->lirc_dev);
- dev->lirc_dev = NULL;
-}
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index 4ac74fd86fd4..155a4de249a0 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -18,24 +18,19 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
-#include <linux/sched/signal.h>
-#include <linux/ioctl.h>
-#include <linux/poll.h>
#include <linux/mutex.h>
#include <linux/device.h>
-#include <linux/cdev.h>
#include <linux/idr.h>
+#include <linux/poll.h>
#include "rc-core-priv.h"
#include <media/lirc.h>
-#include <media/lirc_dev.h>
#define LOGHEAD "lirc_dev (%s[%d]): "
static dev_t lirc_base_dev;
/* Used to keep track of allocated lirc devices */
-#define LIRC_MAX_DEVICES 256
static DEFINE_IDA(lirc_ida);
/* Only used for sysfs but defined to void otherwise */
@@ -43,124 +38,80 @@ static struct class *lirc_class;
static void lirc_release_device(struct device *ld)
{
- struct lirc_dev *d = container_of(ld, struct lirc_dev, dev);
- struct rc_dev *rcdev = d->rdev;
+ struct rc_dev *rcdev = container_of(ld, struct rc_dev, lirc_dev);
if (rcdev->driver_type == RC_DRIVER_IR_RAW)
kfifo_free(&rcdev->rawir);
- kfree(d);
- module_put(THIS_MODULE);
- put_device(d->dev.parent);
-}
-
-struct lirc_dev *
-lirc_allocate_device(void)
-{
- struct lirc_dev *d;
-
- d = kzalloc(sizeof(*d), GFP_KERNEL);
- if (d) {
- device_initialize(&d->dev);
- d->dev.class = lirc_class;
- d->dev.release = lirc_release_device;
- __module_get(THIS_MODULE);
- }
-
- return d;
-}
-EXPORT_SYMBOL(lirc_allocate_device);
-
-void lirc_free_device(struct lirc_dev *d)
-{
- if (!d)
- return;
-
- put_device(&d->dev);
+ put_device(&rcdev->dev);
}
-EXPORT_SYMBOL(lirc_free_device);
-int lirc_register_device(struct lirc_dev *d)
+int ir_lirc_register(struct rc_dev *dev)
{
- struct rc_dev *rcdev = d->rdev;
- int minor;
- int err;
+ int err, minor;
- if (!d) {
- pr_err("driver pointer must be not NULL!\n");
- return -EBADRQC;
- }
+ device_initialize(&dev->lirc_dev);
+ dev->lirc_dev.class = lirc_class;
+ dev->lirc_dev.release = lirc_release_device;
+ dev->send_mode = LIRC_MODE_PULSE;
- if (!d->dev.parent) {
- pr_err("dev parent pointer not filled in!\n");
- return -EINVAL;
+ if (dev->driver_type == RC_DRIVER_IR_RAW) {
+ if (kfifo_alloc(&dev->rawir, MAX_IR_EVENT_SIZE, GFP_KERNEL))
+ return -ENOMEM;
}
- if (!d->fops) {
- pr_err("fops pointer not filled in!\n");
- return -EINVAL;
- }
+ init_waitqueue_head(&dev->wait_poll);
- if (rcdev->driver_type == RC_DRIVER_IR_RAW) {
- if (kfifo_alloc(&rcdev->rawir, MAX_IR_EVENT_SIZE, GFP_KERNEL))
- return -ENOMEM;
+ minor = ida_simple_get(&lirc_ida, 0, RC_DEV_MAX, GFP_KERNEL);
+ if (minor < 0) {
+ err = minor;
+ goto out_kfifo;
}
- init_waitqueue_head(&rcdev->wait_poll);
-
- minor = ida_simple_get(&lirc_ida, 0, LIRC_MAX_DEVICES, GFP_KERNEL);
- if (minor < 0)
- return minor;
+ dev->lirc_dev.parent = &dev->dev;
+ dev->lirc_dev.devt = MKDEV(MAJOR(lirc_base_dev), minor);
+ dev_set_name(&dev->lirc_dev, "lirc%d", minor);
- d->minor = minor;
- d->dev.devt = MKDEV(MAJOR(lirc_base_dev), d->minor);
- dev_set_name(&d->dev, "lirc%d", d->minor);
+ cdev_init(&dev->lirc_cdev, &lirc_fops);
- cdev_init(&d->cdev, d->fops);
- d->cdev.owner = d->owner;
+ err = cdev_device_add(&dev->lirc_cdev, &dev->lirc_dev);
+ if (err)
+ goto out_ida;
- err = cdev_device_add(&d->cdev, &d->dev);
- if (err) {
- ida_simple_remove(&lirc_ida, minor);
- return err;
- }
+ get_device(&dev->dev);
- get_device(d->dev.parent);
-
- dev_info(&d->dev, "lirc_dev: driver %s registered at minor = %d\n",
- rcdev->driver_name, d->minor);
+ dev_info(&dev->dev, "lirc_dev: driver %s registered at minor = %d",
+ dev->driver_name, minor);
return 0;
+
+out_ida:
+ ida_simple_remove(&lirc_ida, minor);
+out_kfifo:
+ if (dev->driver_type == RC_DRIVER_IR_RAW)
+ kfifo_free(&dev->rawir);
+ return err;
}
-EXPORT_SYMBOL(lirc_register_device);
-void lirc_unregister_device(struct lirc_dev *d)
+void ir_lirc_unregister(struct rc_dev *dev)
{
- struct rc_dev *rcdev;
-
- if (!d)
- return;
-
- rcdev = d->rdev;
-
- dev_dbg(&d->dev, "lirc_dev: driver %s unregistered from minor = %d\n",
- rcdev->driver_name, d->minor);
+ dev_dbg(&dev->dev, "lirc_dev: driver %s unregistered from minor = %d\n",
+ dev->driver_name, MINOR(dev->lirc_dev.devt));
- mutex_lock(&rcdev->lock);
+ mutex_lock(&dev->lock);
- if (rcdev->lirc_open) {
- dev_dbg(&d->dev, LOGHEAD "releasing opened driver\n",
- rcdev->driver_name, d->minor);
- wake_up_poll(&rcdev->wait_poll, POLLHUP);
+ if (dev->lirc_open) {
+ dev_dbg(&dev->dev, LOGHEAD "releasing opened driver\n",
+ dev->driver_name, MINOR(dev->lirc_dev.devt));
+ wake_up_poll(&dev->wait_poll, POLLHUP);
}
- mutex_unlock(&rcdev->lock);
+ mutex_unlock(&dev->lock);
- cdev_device_del(&d->cdev, &d->dev);
- ida_simple_remove(&lirc_ida, d->minor);
- put_device(&d->dev);
+ cdev_device_del(&dev->lirc_cdev, &dev->lirc_dev);
+ ida_simple_remove(&lirc_ida, MINOR(dev->lirc_dev.devt));
+ put_device(&dev->lirc_dev);
}
-EXPORT_SYMBOL(lirc_unregister_device);
int __init lirc_dev_init(void)
{
@@ -172,7 +123,7 @@ int __init lirc_dev_init(void)
return PTR_ERR(lirc_class);
}
- retval = alloc_chrdev_region(&lirc_base_dev, 0, LIRC_MAX_DEVICES,
+ retval = alloc_chrdev_region(&lirc_base_dev, 0, RC_DEV_MAX,
"BaseRemoteCtl");
if (retval) {
class_destroy(lirc_class);
@@ -189,5 +140,5 @@ int __init lirc_dev_init(void)
void __exit lirc_dev_exit(void)
{
class_destroy(lirc_class);
- unregister_chrdev_region(lirc_base_dev, LIRC_MAX_DEVICES);
+ unregister_chrdev_region(lirc_base_dev, RC_DEV_MAX);
}
diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
index 21e515d34f64..10fce47c255d 100644
--- a/drivers/media/rc/rc-core-priv.h
+++ b/drivers/media/rc/rc-core-priv.h
@@ -16,6 +16,7 @@
#ifndef _RC_CORE_PRIV
#define _RC_CORE_PRIV
+#define RC_DEV_MAX 256
/* Define the max number of pulse/space transitions to buffer */
#define MAX_IR_EVENT_SIZE 512
@@ -286,6 +287,8 @@ void lirc_dev_exit(void);
void ir_lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev);
int ir_lirc_register(struct rc_dev *dev);
void ir_lirc_unregister(struct rc_dev *dev);
+
+extern const struct file_operations lirc_fops;
#else
static inline int lirc_dev_init(void) { return 0; }
static inline void lirc_dev_exit(void) {}
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 247f19efc852..1103930a3a0a 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -29,7 +29,6 @@
/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
#define IR_TAB_MIN_SIZE 256
#define IR_TAB_MAX_SIZE 8192
-#define RC_DEV_MAX 256
static const struct {
const char *name;
diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h
deleted file mode 100644
index d12e1d1c3d67..000000000000
--- a/include/media/lirc_dev.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * LIRC base driver
- *
- * by Artur Lipowski <alipowski@xxxxxxxxxx>
- * This code is licensed under GNU GPL
- *
- */
-
-#ifndef _LINUX_LIRC_DEV_H
-#define _LINUX_LIRC_DEV_H
-
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/ioctl.h>
-#include <linux/poll.h>
-#include <linux/kfifo.h>
-#include <media/lirc.h>
-#include <linux/device.h>
-#include <linux/cdev.h>
-
-/**
- * struct lirc_dev - represents a LIRC device
- *
- * @minor: the minor device (/dev/lircX) number for the device
- * @rdev: &struct rc_dev associated with the device
- * @fops: &struct file_operations for the device
- * @owner: the module owning this struct
- * @dev: &struct device assigned to the device
- * @cdev: &struct cdev assigned to the device
- */
-struct lirc_dev {
- unsigned int minor;
-
- struct rc_dev *rdev;
- const struct file_operations *fops;
- struct module *owner;
-
- struct device dev;
- struct cdev cdev;
-};
-
-struct lirc_dev *lirc_allocate_device(void);
-
-void lirc_free_device(struct lirc_dev *d);
-
-int lirc_register_device(struct lirc_dev *d);
-
-void lirc_unregister_device(struct lirc_dev *d);
-
-#endif
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index f0ee1ba01a47..e3db561a9bd7 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -17,10 +17,10 @@
#define _RC_CORE
#include <linux/spinlock.h>
+#include <linux/cdev.h>
#include <linux/kfifo.h>
#include <linux/time.h>
#include <linux/timer.h>
-#include <media/lirc_dev.h>
#include <media/rc-map.h>
extern int rc_core_debug;
@@ -116,7 +116,8 @@ enum rc_filter_type {
* @max_timeout: maximum timeout supported by device
* @rx_resolution : resolution (in ns) of input sampler
* @tx_resolution: resolution (in ns) of output sampler
- * @lirc_dev: lirc char device
+ * @lirc_dev: lirc device
+ * @lirc_cdev: lirc char cdev
* @lirc_open: count of the number of times the device has been opened
* @carrier_low: when setting the carrier range, first the low end must be
* set with an ioctl and then the high end with another ioctl
@@ -191,7 +192,8 @@ struct rc_dev {
u32 rx_resolution;
u32 tx_resolution;
#ifdef CONFIG_LIRC
- struct lirc_dev *lirc_dev;
+ struct device lirc_dev;
+ struct cdev lirc_cdev;
int lirc_open;
int carrier_low;
ktime_t gap_start;
--
2.13.5
