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media: lirc: remove LIRCCODE and LIRC_GET_LENGTH

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LIRCCODE is a lirc mode where a driver produces driver-dependent
codes for receive and transmit. No driver uses this any more. The
LIRC_GET_LENGTH ioctl was used for this mode only.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young 2017-06-08 05:10:41 -04:00 committed by Mauro Carvalho Chehab
parent 794348e883
commit 4e3cd001fd
10 changed files with 9 additions and 87 deletions
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5
Documentation/media/lirc.h.rst.exceptions
View File

@ -28,6 +28,10 @@ ignore define LIRC_CAN_SEND_MASK
ignore define LIRC_CAN_REC_MASK
ignore define LIRC_CAN_SET_REC_DUTY_CYCLE
# Obsolete ioctls
ignore ioctl LIRC_GET_LENGTH
# Undocumented macros
ignore define PULSE_BIT
@ -40,3 +44,4 @@ ignore define LIRC_VALUE_MASK
ignore define LIRC_MODE2_MASK
ignore define LIRC_MODE_RAW
ignore define LIRC_MODE_LIRCCODE

15
Documentation/media/uapi/rc/lirc-dev-intro.rst
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@ -72,21 +72,6 @@ on the following table.
this packet will be sent, with the number of microseconds with
no IR.
.. _lirc-mode-lirccode:
``LIRC_MODE_LIRCCODE``
This mode can be used for IR receive and send.
The IR signal is decoded internally by the receiver, or encoded by the
transmitter. The LIRC interface represents the scancode as byte string,
which might not be a u32, it can be any length. The value is entirely
driver dependent. This mode is used by some older lirc drivers.
The length of each code depends on the driver, which can be retrieved
with :ref:`lirc_get_length`. This length is used both
for transmitting and receiving IR.
.. _lirc-mode-pulse:
``LIRC_MODE_PULSE``

1
Documentation/media/uapi/rc/lirc-func.rst
View File

@ -18,7 +18,6 @@ LIRC Function Reference
lirc-set-send-duty-cycle
lirc-get-timeout
lirc-set-rec-timeout
lirc-get-length
lirc-set-rec-carrier
lirc-set-rec-carrier-range
lirc-set-send-carrier

7
Documentation/media/uapi/rc/lirc-get-features.rst
View File

@ -62,8 +62,7 @@ LIRC features
``LIRC_CAN_REC_LIRCCODE``
The driver is capable of receiving using
:ref:`LIRC_MODE_LIRCCODE <lirc-mode-LIRCCODE>`.
Unused. Kept just to avoid breaking uAPI.
.. _LIRC-CAN-SET-SEND-CARRIER:
@ -170,9 +169,7 @@ LIRC features
``LIRC_CAN_SEND_LIRCCODE``
The driver supports sending (also called as IR blasting or IR TX) using
:ref:`LIRC_MODE_LIRCCODE <lirc-mode-LIRCCODE>`.
Unused. Kept just to avoid breaking uAPI.
Return Value
============

44
Documentation/media/uapi/rc/lirc-get-length.rst
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@ -1,44 +0,0 @@
.. -*- coding: utf-8; mode: rst -*-
.. _lirc_get_length:
*********************
ioctl LIRC_GET_LENGTH
*********************
Name
====
LIRC_GET_LENGTH - Retrieves the code length in bits.
Synopsis
========
.. c:function:: int ioctl( int fd, LIRC_GET_LENGTH, __u32 *length )
:name: LIRC_GET_LENGTH
Arguments
=========
``fd``
File descriptor returned by open().
``length``
length, in bits
Description
===========
Retrieves the code length in bits (only for
:ref:`LIRC_MODE_LIRCCODE <lirc-mode-lirccode>`).
Reads on the device must be done in blocks matching the bit count.
The bit could should be rounded up so that it matches full bytes.
Return Value
============
On success 0 is returned, on error -1 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.

4
Documentation/media/uapi/rc/lirc-get-rec-mode.rst
View File

@ -34,9 +34,7 @@ Description
===========
Get/set supported receive modes. Only :ref:`LIRC_MODE_MODE2 <lirc-mode-mode2>`
and :ref:`LIRC_MODE_LIRCCODE <lirc-mode-lirccode>` are supported for IR
receive. Use :ref:`lirc_get_features` to find out which modes the driver
supports.
is supported for IR receive.
Return Value
============

3
Documentation/media/uapi/rc/lirc-get-send-mode.rst
View File

@ -36,8 +36,7 @@ Description
Get/set current transmit mode.
Only :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>` and
:ref:`LIRC_MODE_LIRCCODE <lirc-mode-lirccode>` is supported by for IR send,
Only :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>` is supported by for IR send,
depending on the driver. Use :ref:`lirc_get_features` to find out which
modes the driver supports.

1
drivers/media/rc/ir-lirc-codec.c
View File

@ -388,7 +388,6 @@ static int ir_lirc_register(struct rc_dev *dev)
ldev->features = features;
ldev->data = &dev->raw->lirc;
ldev->buf = NULL;
ldev->code_length = sizeof(struct ir_raw_event) * 8;
ldev->chunk_size = sizeof(int);
ldev->buffer_size = LIRCBUF_SIZE;
ldev->fops = &lirc_fops;

12
drivers/media/rc/lirc_dev.c
View File

@ -137,12 +137,6 @@ int lirc_register_device(struct lirc_dev *d)
return -EINVAL;
}
if (d->code_length < 1 || d->code_length > (BUFLEN * 8)) {
dev_err(&d->dev, "code length must be less than %d bits\n",
BUFLEN * 8);
return -EBADRQC;
}
if (!d->buf && !(d->fops && d->fops->read &&
d->fops->poll && d->fops->unlocked_ioctl)) {
dev_err(&d->dev, "undefined read, poll, ioctl\n");
@ -152,9 +146,6 @@ int lirc_register_device(struct lirc_dev *d)
/* some safety check 8-) */
d->name[sizeof(d->name) - 1] = '\0';
if (d->features == 0)
d->features = LIRC_CAN_REC_LIRCCODE;
if (LIRC_CAN_REC(d->features)) {
err = lirc_allocate_buffer(d);
if (err)
@ -343,9 +334,6 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
* for now, lirc_serial doesn't support mode changing either
*/
break;
case LIRC_GET_LENGTH:
result = put_user(d->code_length, (__u32 __user *)arg);
break;
default:
result = -ENOTTY;
}

4
include/media/lirc_dev.h
View File

@ -9,8 +9,6 @@
#ifndef _LINUX_LIRC_DEV_H
#define _LINUX_LIRC_DEV_H
#define BUFLEN 16
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
@ -117,7 +115,6 @@ static inline unsigned int lirc_buffer_write(struct lirc_buffer *buf,
*
* @name: used for logging
* @minor: the minor device (/dev/lircX) number for the device
* @code_length: length of a remote control key code expressed in bits
* @features: lirc compatible hardware features, like LIRC_MODE_RAW,
* LIRC_CAN\_\*, as defined at include/media/lirc.h.
* @buffer_size: Number of FIFO buffers with @chunk_size size.
@ -142,7 +139,6 @@ static inline unsigned int lirc_buffer_write(struct lirc_buffer *buf,
struct lirc_dev {
char name[40];
unsigned int minor;
__u32 code_length;
__u32 features;
unsigned int buffer_size; /* in chunks holding one code each */