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Bruno Prémontfabdbf22012-07-30 21:38:28 +02001/***************************************************************************
2 * Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> *
3 * *
4 * Based on Logitech G13 driver (v0.4) *
5 * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
6 * *
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. *
10 * *
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. *
15 * *
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 ***************************************************************************/
19
20#include <linux/hid.h>
21#include <linux/hid-debug.h>
22#include <linux/input.h>
23#include "hid-ids.h"
24#include "usbhid/usbhid.h"
25#include <linux/usb.h>
26
27#include <linux/fb.h>
28#include <linux/vmalloc.h>
29#include <linux/backlight.h>
30#include <linux/lcd.h>
31
32#include <linux/leds.h>
33
34#include <linux/seq_file.h>
35#include <linux/debugfs.h>
36
37#include <linux/completion.h>
38#include <linux/uaccess.h>
39#include <linux/module.h>
Bruno Prémontae08e322012-08-19 19:32:54 +020040#include <media/rc-core.h>
Bruno Prémontfabdbf22012-07-30 21:38:28 +020041
42#include "hid-picolcd.h"
43
44
45int picolcd_raw_cir(struct picolcd_data *data,
46 struct hid_report *report, u8 *raw_data, int size)
47{
Bruno Prémontae08e322012-08-19 19:32:54 +020048 unsigned long flags;
49 int i, w, sz;
50 DEFINE_IR_RAW_EVENT(rawir);
51
52 /* ignore if rc_dev is NULL or status is shunned */
53 spin_lock_irqsave(&data->lock, flags);
Dan Carpenter02d9be12012-09-07 09:47:41 +030054 if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) {
Bruno Prémontae08e322012-08-19 19:32:54 +020055 spin_unlock_irqrestore(&data->lock, flags);
56 return 1;
57 }
58 spin_unlock_irqrestore(&data->lock, flags);
59
60 /* PicoLCD USB packets contain 16-bit intervals in network order,
61 * with value negated for pulse. Intervals are in microseconds.
62 *
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)
65 *
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
69 */
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);
80 }
81 ir_raw_event_handle(data->rc_dev);
82
Bruno Prémontfabdbf22012-07-30 21:38:28 +020083 return 1;
84}
85
Bruno Prémontae08e322012-08-19 19:32:54 +020086static int picolcd_cir_open(struct rc_dev *dev)
87{
88 struct picolcd_data *data = dev->priv;
89 unsigned long flags;
90
91 spin_lock_irqsave(&data->lock, flags);
92 data->status &= ~PICOLCD_CIR_SHUN;
93 spin_unlock_irqrestore(&data->lock, flags);
94 return 0;
95}
96
97static void picolcd_cir_close(struct rc_dev *dev)
98{
99 struct picolcd_data *data = dev->priv;
100 unsigned long flags;
101
102 spin_lock_irqsave(&data->lock, flags);
103 data->status |= PICOLCD_CIR_SHUN;
104 spin_unlock_irqrestore(&data->lock, flags);
105}
106
Bruno Prémontfabdbf22012-07-30 21:38:28 +0200107/* initialize CIR input device */
108int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)
109{
Bruno Prémontae08e322012-08-19 19:32:54 +0200110 struct rc_dev *rdev;
111 int ret = 0;
112
113 rdev = rc_allocate_device();
114 if (!rdev)
115 return -ENOMEM;
116
117 rdev->priv = data;
118 rdev->driver_type = RC_DRIVER_IR_RAW;
David Härdemanc28eb662012-10-31 04:22:08 -0300119 rdev->allowed_protos = RC_BIT_ALL;
Bruno Prémontae08e322012-08-19 19:32:54 +0200120 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);
133
134 ret = rc_register_device(rdev);
135 if (ret)
136 goto err;
137 data->rc_dev = rdev;
Bruno Prémontfabdbf22012-07-30 21:38:28 +0200138 return 0;
Bruno Prémontae08e322012-08-19 19:32:54 +0200139
140err:
141 rc_free_device(rdev);
142 return ret;
Bruno Prémontfabdbf22012-07-30 21:38:28 +0200143}
144
145void picolcd_exit_cir(struct picolcd_data *data)
146{
Bruno Prémontae08e322012-08-19 19:32:54 +0200147 struct rc_dev *rdev = data->rc_dev;
148
149 data->rc_dev = NULL;
150 rc_unregister_device(rdev);
Bruno Prémontfabdbf22012-07-30 21:38:28 +0200151}
152