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fabdbf2f BP |
1 | /*************************************************************************** |
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" | |
fabdbf2f BP |
24 | |
25 | #include <linux/fb.h> | |
26 | #include <linux/vmalloc.h> | |
27 | #include <linux/backlight.h> | |
28 | #include <linux/lcd.h> | |
29 | ||
30 | #include <linux/leds.h> | |
31 | ||
32 | #include <linux/seq_file.h> | |
33 | #include <linux/debugfs.h> | |
34 | ||
35 | #include <linux/completion.h> | |
36 | #include <linux/uaccess.h> | |
37 | #include <linux/module.h> | |
ae08e324 | 38 | #include <media/rc-core.h> |
fabdbf2f BP |
39 | |
40 | #include "hid-picolcd.h" | |
41 | ||
42 | ||
43 | int picolcd_raw_cir(struct picolcd_data *data, | |
44 | struct hid_report *report, u8 *raw_data, int size) | |
45 | { | |
ae08e324 BP |
46 | unsigned long flags; |
47 | int i, w, sz; | |
48 | DEFINE_IR_RAW_EVENT(rawir); | |
49 | ||
50 | /* ignore if rc_dev is NULL or status is shunned */ | |
51 | spin_lock_irqsave(&data->lock, flags); | |
02d9be1a | 52 | if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) { |
ae08e324 BP |
53 | spin_unlock_irqrestore(&data->lock, flags); |
54 | return 1; | |
55 | } | |
56 | spin_unlock_irqrestore(&data->lock, flags); | |
57 | ||
58 | /* PicoLCD USB packets contain 16-bit intervals in network order, | |
59 | * with value negated for pulse. Intervals are in microseconds. | |
60 | * | |
61 | * Note: some userspace LIRC code for PicoLCD says negated values | |
62 | * for space - is it a matter of IR chip? (pulse for my TSOP2236) | |
63 | * | |
64 | * In addition, the first interval seems to be around 15000 + base | |
65 | * interval for non-first report of IR data - thus the quirk below | |
66 | * to get RC_CODE to understand Sony and JVC remotes I have at hand | |
67 | */ | |
68 | sz = size > 0 ? min((int)raw_data[0], size-1) : 0; | |
69 | for (i = 0; i+1 < sz; i += 2) { | |
70 | init_ir_raw_event(&rawir); | |
71 | w = (raw_data[i] << 8) | (raw_data[i+1]); | |
72 | rawir.pulse = !!(w & 0x8000); | |
73 | rawir.duration = US_TO_NS(rawir.pulse ? (65536 - w) : w); | |
74 | /* Quirk!! - see above */ | |
75 | if (i == 0 && rawir.duration > 15000000) | |
76 | rawir.duration -= 15000000; | |
77 | ir_raw_event_store(data->rc_dev, &rawir); | |
78 | } | |
79 | ir_raw_event_handle(data->rc_dev); | |
80 | ||
fabdbf2f BP |
81 | return 1; |
82 | } | |
83 | ||
ae08e324 BP |
84 | static int picolcd_cir_open(struct rc_dev *dev) |
85 | { | |
86 | struct picolcd_data *data = dev->priv; | |
87 | unsigned long flags; | |
88 | ||
89 | spin_lock_irqsave(&data->lock, flags); | |
90 | data->status &= ~PICOLCD_CIR_SHUN; | |
91 | spin_unlock_irqrestore(&data->lock, flags); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | static void picolcd_cir_close(struct rc_dev *dev) | |
96 | { | |
97 | struct picolcd_data *data = dev->priv; | |
98 | unsigned long flags; | |
99 | ||
100 | spin_lock_irqsave(&data->lock, flags); | |
101 | data->status |= PICOLCD_CIR_SHUN; | |
102 | spin_unlock_irqrestore(&data->lock, flags); | |
103 | } | |
104 | ||
fabdbf2f BP |
105 | /* initialize CIR input device */ |
106 | int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report) | |
107 | { | |
ae08e324 BP |
108 | struct rc_dev *rdev; |
109 | int ret = 0; | |
110 | ||
111 | rdev = rc_allocate_device(); | |
112 | if (!rdev) | |
113 | return -ENOMEM; | |
114 | ||
115 | rdev->priv = data; | |
116 | rdev->driver_type = RC_DRIVER_IR_RAW; | |
c5540fbb | 117 | rdev->allowed_protocols = RC_BIT_ALL; |
ae08e324 BP |
118 | rdev->open = picolcd_cir_open; |
119 | rdev->close = picolcd_cir_close; | |
120 | rdev->input_name = data->hdev->name; | |
121 | rdev->input_phys = data->hdev->phys; | |
122 | rdev->input_id.bustype = data->hdev->bus; | |
123 | rdev->input_id.vendor = data->hdev->vendor; | |
124 | rdev->input_id.product = data->hdev->product; | |
125 | rdev->input_id.version = data->hdev->version; | |
126 | rdev->dev.parent = &data->hdev->dev; | |
127 | rdev->driver_name = PICOLCD_NAME; | |
128 | rdev->map_name = RC_MAP_RC6_MCE; | |
129 | rdev->timeout = MS_TO_NS(100); | |
130 | rdev->rx_resolution = US_TO_NS(1); | |
131 | ||
132 | ret = rc_register_device(rdev); | |
133 | if (ret) | |
134 | goto err; | |
135 | data->rc_dev = rdev; | |
fabdbf2f | 136 | return 0; |
ae08e324 BP |
137 | |
138 | err: | |
139 | rc_free_device(rdev); | |
140 | return ret; | |
fabdbf2f BP |
141 | } |
142 | ||
143 | void picolcd_exit_cir(struct picolcd_data *data) | |
144 | { | |
ae08e324 BP |
145 | struct rc_dev *rdev = data->rc_dev; |
146 | ||
147 | data->rc_dev = NULL; | |
4b8a8262 | 148 | rc_unregister_device(rdev); |
fabdbf2f BP |
149 | } |
150 |