hid-picolcd_cir.c
4.72 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
/***************************************************************************
* Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> *
* *
* Based on Logitech G13 driver (v0.4) *
* Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, version 2 of the License. *
* *
* This driver is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this software. If not see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include <linux/hid.h>
#include <linux/hid-debug.h>
#include <linux/input.h>
#include "hid-ids.h"
#include <linux/fb.h>
#include <linux/vmalloc.h>
#include <linux/backlight.h>
#include <linux/lcd.h>
#include <linux/leds.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/completion.h>
#include <linux/uaccess.h>
#include <linux/module.h>
#include <media/rc-core.h>
#include "hid-picolcd.h"
int picolcd_raw_cir(struct picolcd_data *data,
struct hid_report *report, u8 *raw_data, int size)
{
unsigned long flags;
int i, w, sz;
DEFINE_IR_RAW_EVENT(rawir);
/* ignore if rc_dev is NULL or status is shunned */
spin_lock_irqsave(&data->lock, flags);
if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) {
spin_unlock_irqrestore(&data->lock, flags);
return 1;
}
spin_unlock_irqrestore(&data->lock, flags);
/* PicoLCD USB packets contain 16-bit intervals in network order,
* with value negated for pulse. Intervals are in microseconds.
*
* Note: some userspace LIRC code for PicoLCD says negated values
* for space - is it a matter of IR chip? (pulse for my TSOP2236)
*
* In addition, the first interval seems to be around 15000 + base
* interval for non-first report of IR data - thus the quirk below
* to get RC_CODE to understand Sony and JVC remotes I have at hand
*/
sz = size > 0 ? min((int)raw_data[0], size-1) : 0;
for (i = 0; i+1 < sz; i += 2) {
init_ir_raw_event(&rawir);
w = (raw_data[i] << 8) | (raw_data[i+1]);
rawir.pulse = !!(w & 0x8000);
rawir.duration = US_TO_NS(rawir.pulse ? (65536 - w) : w);
/* Quirk!! - see above */
if (i == 0 && rawir.duration > 15000000)
rawir.duration -= 15000000;
ir_raw_event_store(data->rc_dev, &rawir);
}
ir_raw_event_handle(data->rc_dev);
return 1;
}
static int picolcd_cir_open(struct rc_dev *dev)
{
struct picolcd_data *data = dev->priv;
unsigned long flags;
spin_lock_irqsave(&data->lock, flags);
data->status &= ~PICOLCD_CIR_SHUN;
spin_unlock_irqrestore(&data->lock, flags);
return 0;
}
static void picolcd_cir_close(struct rc_dev *dev)
{
struct picolcd_data *data = dev->priv;
unsigned long flags;
spin_lock_irqsave(&data->lock, flags);
data->status |= PICOLCD_CIR_SHUN;
spin_unlock_irqrestore(&data->lock, flags);
}
/* initialize CIR input device */
int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)
{
struct rc_dev *rdev;
int ret = 0;
rdev = rc_allocate_device();
if (!rdev)
return -ENOMEM;
rdev->priv = data;
rdev->driver_type = RC_DRIVER_IR_RAW;
rdev->allowed_protos = RC_BIT_ALL;
rdev->open = picolcd_cir_open;
rdev->close = picolcd_cir_close;
rdev->input_name = data->hdev->name;
rdev->input_phys = data->hdev->phys;
rdev->input_id.bustype = data->hdev->bus;
rdev->input_id.vendor = data->hdev->vendor;
rdev->input_id.product = data->hdev->product;
rdev->input_id.version = data->hdev->version;
rdev->dev.parent = &data->hdev->dev;
rdev->driver_name = PICOLCD_NAME;
rdev->map_name = RC_MAP_RC6_MCE;
rdev->timeout = MS_TO_NS(100);
rdev->rx_resolution = US_TO_NS(1);
ret = rc_register_device(rdev);
if (ret)
goto err;
data->rc_dev = rdev;
return 0;
err:
rc_free_device(rdev);
return ret;
}
void picolcd_exit_cir(struct picolcd_data *data)
{
struct rc_dev *rdev = data->rc_dev;
data->rc_dev = NULL;
if (rdev)
rc_unregister_device(rdev);
}