linux-imx

// SPDX-License-Identifier: GPL-2.0

// rc-main.c - Remote Controller core module

//

// Copyright (C) 2009-2010 by Mauro Carvalho Chehab

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <media/rc-core.h>

#include <linux/bsearch.h>

#include <linux/spinlock.h>

#include <linux/delay.h>

#include <linux/input.h>

#include <linux/leds.h>

#include <linux/slab.h>

#include <linux/idr.h>

#include <linux/device.h>

#include <linux/module.h>

#include "rc-core-priv.h"

​

/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */

#define IR_TAB_MIN_SIZE 256

#define IR_TAB_MAX_SIZE 8192

​

static const struct {

    const char *name;

    unsigned int repeat_period;

    unsigned int scancode_bits;

} protocols[] = {

    [RC_PROTO_UNKNOWN] = { .name = "unknown", .repeat_period = 125 },

    [RC_PROTO_OTHER] = { .name = "other", .repeat_period = 125 },

    [RC_PROTO_RC5] = { .name = "rc-5",

        .scancode_bits = 0x1f7f, .repeat_period = 114 },

    [RC_PROTO_RC5X_20] = { .name = "rc-5x-20",

        .scancode_bits = 0x1f7f3f, .repeat_period = 114 },

    [RC_PROTO_RC5_SZ] = { .name = "rc-5-sz",

        .scancode_bits = 0x2fff, .repeat_period = 114 },

    [RC_PROTO_JVC] = { .name = "jvc",

        .scancode_bits = 0xffff, .repeat_period = 125 },

    [RC_PROTO_SONY12] = { .name = "sony-12",

        .scancode_bits = 0x1f007f, .repeat_period = 100 },

    [RC_PROTO_SONY15] = { .name = "sony-15",

        .scancode_bits = 0xff007f, .repeat_period = 100 },

    [RC_PROTO_SONY20] = { .name = "sony-20",

        .scancode_bits = 0x1fff7f, .repeat_period = 100 },

    [RC_PROTO_NEC] = { .name = "nec",

        .scancode_bits = 0xffff, .repeat_period = 110 },

    [RC_PROTO_NECX] = { .name = "nec-x",

        .scancode_bits = 0xffffff, .repeat_period = 110 },

    [RC_PROTO_NEC32] = { .name = "nec-32",

        .scancode_bits = 0xffffffff, .repeat_period = 110 },

    [RC_PROTO_SANYO] = { .name = "sanyo",

        .scancode_bits = 0x1fffff, .repeat_period = 125 },

    [RC_PROTO_MCIR2_KBD] = { .name = "mcir2-kbd",

        .scancode_bits = 0xffffff, .repeat_period = 100 },

    [RC_PROTO_MCIR2_MSE] = { .name = "mcir2-mse",

        .scancode_bits = 0x1fffff, .repeat_period = 100 },

    [RC_PROTO_RC6_0] = { .name = "rc-6-0",

        .scancode_bits = 0xffff, .repeat_period = 114 },

    [RC_PROTO_RC6_6A_20] = { .name = "rc-6-6a-20",

        .scancode_bits = 0xfffff, .repeat_period = 114 },

    [RC_PROTO_RC6_6A_24] = { .name = "rc-6-6a-24",

        .scancode_bits = 0xffffff, .repeat_period = 114 },

    [RC_PROTO_RC6_6A_32] = { .name = "rc-6-6a-32",

        .scancode_bits = 0xffffffff, .repeat_period = 114 },

    [RC_PROTO_RC6_MCE] = { .name = "rc-6-mce",

        .scancode_bits = 0xffff7fff, .repeat_period = 114 },

    [RC_PROTO_SHARP] = { .name = "sharp",

        .scancode_bits = 0x1fff, .repeat_period = 125 },

    [RC_PROTO_XMP] = { .name = "xmp", .repeat_period = 125 },

    [RC_PROTO_CEC] = { .name = "cec", .repeat_period = 0 },

    [RC_PROTO_IMON] = { .name = "imon",

        .scancode_bits = 0x7fffffff, .repeat_period = 114 },

    [RC_PROTO_RCMM12] = { .name = "rc-mm-12",

        .scancode_bits = 0x00000fff, .repeat_period = 114 },

    [RC_PROTO_RCMM24] = { .name = "rc-mm-24",

        .scancode_bits = 0x00ffffff, .repeat_period = 114 },

    [RC_PROTO_RCMM32] = { .name = "rc-mm-32",

        .scancode_bits = 0xffffffff, .repeat_period = 114 },

};

​

/* Used to keep track of known keymaps */

static LIST_HEAD(rc_map_list);

static DEFINE_SPINLOCK(rc_map_lock);

static struct led_trigger *led_feedback;

​

/* Used to keep track of rc devices */

static DEFINE_IDA(rc_ida);

​

static struct rc_map_list *seek_rc_map(const char *name)

{

    struct rc_map_list *map = NULL;

​