1 /***************************************************************************
2 * Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> *
4 * Based on Logitech G13 driver (v0.4) *
5 * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
7 * This program is free software: you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation, version 2 of the License. *
11 * This driver is distributed in the hope that it will be useful, but *
12 * WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14 * General Public License for more details. *
16 * You should have received a copy of the GNU General Public License *
17 * along with this software. If not see <http://www.gnu.org/licenses/>. *
18 ***************************************************************************/
20 #include <linux/hid.h>
21 #include <linux/hid-debug.h>
22 #include <linux/input.h>
24 #include "usbhid/usbhid.h"
25 #include <linux/usb.h>
28 #include <linux/vmalloc.h>
29 #include <linux/backlight.h>
30 #include <linux/lcd.h>
32 #include <linux/leds.h>
34 #include <linux/seq_file.h>
35 #include <linux/debugfs.h>
37 #include <linux/completion.h>
38 #include <linux/uaccess.h>
39 #include <linux/module.h>
40 #include <media/rc-core.h>
42 #include "hid-picolcd.h"
45 int picolcd_raw_cir(struct picolcd_data
*data
,
46 struct hid_report
*report
, u8
*raw_data
, int size
)
50 DEFINE_IR_RAW_EVENT(rawir
);
52 /* ignore if rc_dev is NULL or status is shunned */
53 spin_lock_irqsave(&data
->lock
, flags
);
54 if (!data
->rc_dev
|| (data
->status
& PICOLCD_CIR_SHUN
)) {
55 spin_unlock_irqrestore(&data
->lock
, flags
);
58 spin_unlock_irqrestore(&data
->lock
, flags
);
60 /* PicoLCD USB packets contain 16-bit intervals in network order,
61 * with value negated for pulse. Intervals are in microseconds.
63 * Note: some userspace LIRC code for PicoLCD says negated values
64 * for space - is it a matter of IR chip? (pulse for my TSOP2236)
66 * In addition, the first interval seems to be around 15000 + base
67 * interval for non-first report of IR data - thus the quirk below
68 * to get RC_CODE to understand Sony and JVC remotes I have at hand
70 sz
= size
> 0 ? min((int)raw_data
[0], size
-1) : 0;
71 for (i
= 0; i
+1 < sz
; i
+= 2) {
72 init_ir_raw_event(&rawir
);
73 w
= (raw_data
[i
] << 8) | (raw_data
[i
+1]);
74 rawir
.pulse
= !!(w
& 0x8000);
75 rawir
.duration
= US_TO_NS(rawir
.pulse
? (65536 - w
) : w
);
76 /* Quirk!! - see above */
77 if (i
== 0 && rawir
.duration
> 15000000)
78 rawir
.duration
-= 15000000;
79 ir_raw_event_store(data
->rc_dev
, &rawir
);
81 ir_raw_event_handle(data
->rc_dev
);
86 static int picolcd_cir_open(struct rc_dev
*dev
)
88 struct picolcd_data
*data
= dev
->priv
;
91 spin_lock_irqsave(&data
->lock
, flags
);
92 data
->status
&= ~PICOLCD_CIR_SHUN
;
93 spin_unlock_irqrestore(&data
->lock
, flags
);
97 static void picolcd_cir_close(struct rc_dev
*dev
)
99 struct picolcd_data
*data
= dev
->priv
;
102 spin_lock_irqsave(&data
->lock
, flags
);
103 data
->status
|= PICOLCD_CIR_SHUN
;
104 spin_unlock_irqrestore(&data
->lock
, flags
);
107 /* initialize CIR input device */
108 int picolcd_init_cir(struct picolcd_data
*data
, struct hid_report
*report
)
113 rdev
= rc_allocate_device();
118 rdev
->driver_type
= RC_DRIVER_IR_RAW
;
119 rdev
->allowed_protos
= RC_BIT_ALL
;
120 rdev
->open
= picolcd_cir_open
;
121 rdev
->close
= picolcd_cir_close
;
122 rdev
->input_name
= data
->hdev
->name
;
123 rdev
->input_phys
= data
->hdev
->phys
;
124 rdev
->input_id
.bustype
= data
->hdev
->bus
;
125 rdev
->input_id
.vendor
= data
->hdev
->vendor
;
126 rdev
->input_id
.product
= data
->hdev
->product
;
127 rdev
->input_id
.version
= data
->hdev
->version
;
128 rdev
->dev
.parent
= &data
->hdev
->dev
;
129 rdev
->driver_name
= PICOLCD_NAME
;
130 rdev
->map_name
= RC_MAP_RC6_MCE
;
131 rdev
->timeout
= MS_TO_NS(100);
132 rdev
->rx_resolution
= US_TO_NS(1);
134 ret
= rc_register_device(rdev
);
141 rc_free_device(rdev
);
145 void picolcd_exit_cir(struct picolcd_data
*data
)
147 struct rc_dev
*rdev
= data
->rc_dev
;
150 rc_unregister_device(rdev
);
This page took 0.034103 seconds and 5 git commands to generate.