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24c9d96d | 1 | // SPDX-License-Identifier: GPL-2.0-only |
fabdbf2f BP |
2 | /*************************************************************************** |
3 | * Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> * | |
4 | * * | |
5 | * Based on Logitech G13 driver (v0.4) * | |
6 | * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> * | |
7 | * * | |
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8 | ***************************************************************************/ |
9 | ||
10 | #include <linux/hid.h> | |
11 | #include <linux/hid-debug.h> | |
12 | #include <linux/input.h> | |
13 | #include "hid-ids.h" | |
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14 | |
15 | #include <linux/fb.h> | |
16 | #include <linux/vmalloc.h> | |
17 | #include <linux/backlight.h> | |
18 | #include <linux/lcd.h> | |
19 | ||
20 | #include <linux/leds.h> | |
21 | ||
22 | #include <linux/seq_file.h> | |
23 | #include <linux/debugfs.h> | |
24 | ||
25 | #include <linux/completion.h> | |
26 | #include <linux/uaccess.h> | |
27 | #include <linux/module.h> | |
ae08e324 | 28 | #include <media/rc-core.h> |
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29 | |
30 | #include "hid-picolcd.h" | |
31 | ||
32 | ||
33 | int picolcd_raw_cir(struct picolcd_data *data, | |
34 | struct hid_report *report, u8 *raw_data, int size) | |
35 | { | |
ae08e324 BP |
36 | unsigned long flags; |
37 | int i, w, sz; | |
183e19f5 | 38 | struct ir_raw_event rawir = {}; |
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39 | |
40 | /* ignore if rc_dev is NULL or status is shunned */ | |
41 | spin_lock_irqsave(&data->lock, flags); | |
02d9be1a | 42 | if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) { |
ae08e324 BP |
43 | spin_unlock_irqrestore(&data->lock, flags); |
44 | return 1; | |
45 | } | |
46 | spin_unlock_irqrestore(&data->lock, flags); | |
47 | ||
48 | /* PicoLCD USB packets contain 16-bit intervals in network order, | |
49 | * with value negated for pulse. Intervals are in microseconds. | |
50 | * | |
51 | * Note: some userspace LIRC code for PicoLCD says negated values | |
52 | * for space - is it a matter of IR chip? (pulse for my TSOP2236) | |
53 | * | |
54 | * In addition, the first interval seems to be around 15000 + base | |
55 | * interval for non-first report of IR data - thus the quirk below | |
56 | * to get RC_CODE to understand Sony and JVC remotes I have at hand | |
57 | */ | |
58 | sz = size > 0 ? min((int)raw_data[0], size-1) : 0; | |
59 | for (i = 0; i+1 < sz; i += 2) { | |
ae08e324 BP |
60 | w = (raw_data[i] << 8) | (raw_data[i+1]); |
61 | rawir.pulse = !!(w & 0x8000); | |
528222d8 | 62 | rawir.duration = rawir.pulse ? (65536 - w) : w; |
ae08e324 | 63 | /* Quirk!! - see above */ |
528222d8 SY |
64 | if (i == 0 && rawir.duration > 15000) |
65 | rawir.duration -= 15000; | |
ae08e324 BP |
66 | ir_raw_event_store(data->rc_dev, &rawir); |
67 | } | |
68 | ir_raw_event_handle(data->rc_dev); | |
69 | ||
fabdbf2f BP |
70 | return 1; |
71 | } | |
72 | ||
ae08e324 BP |
73 | static int picolcd_cir_open(struct rc_dev *dev) |
74 | { | |
75 | struct picolcd_data *data = dev->priv; | |
76 | unsigned long flags; | |
77 | ||
78 | spin_lock_irqsave(&data->lock, flags); | |
79 | data->status &= ~PICOLCD_CIR_SHUN; | |
80 | spin_unlock_irqrestore(&data->lock, flags); | |
81 | return 0; | |
82 | } | |
83 | ||
84 | static void picolcd_cir_close(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 | } | |
93 | ||
fabdbf2f BP |
94 | /* initialize CIR input device */ |
95 | int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report) | |
96 | { | |
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97 | struct rc_dev *rdev; |
98 | int ret = 0; | |
99 | ||
0f7499fd | 100 | rdev = rc_allocate_device(RC_DRIVER_IR_RAW); |
ae08e324 BP |
101 | if (!rdev) |
102 | return -ENOMEM; | |
103 | ||
104 | rdev->priv = data; | |
6d741bfe | 105 | rdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; |
ae08e324 BP |
106 | rdev->open = picolcd_cir_open; |
107 | rdev->close = picolcd_cir_close; | |
518f4b26 | 108 | rdev->device_name = data->hdev->name; |
ae08e324 BP |
109 | rdev->input_phys = data->hdev->phys; |
110 | rdev->input_id.bustype = data->hdev->bus; | |
111 | rdev->input_id.vendor = data->hdev->vendor; | |
112 | rdev->input_id.product = data->hdev->product; | |
113 | rdev->input_id.version = data->hdev->version; | |
114 | rdev->dev.parent = &data->hdev->dev; | |
115 | rdev->driver_name = PICOLCD_NAME; | |
116 | rdev->map_name = RC_MAP_RC6_MCE; | |
528222d8 SY |
117 | rdev->timeout = MS_TO_US(100); |
118 | rdev->rx_resolution = 1; | |
ae08e324 BP |
119 | |
120 | ret = rc_register_device(rdev); | |
121 | if (ret) | |
122 | goto err; | |
123 | data->rc_dev = rdev; | |
fabdbf2f | 124 | return 0; |
ae08e324 BP |
125 | |
126 | err: | |
127 | rc_free_device(rdev); | |
128 | return ret; | |
fabdbf2f BP |
129 | } |
130 | ||
131 | void picolcd_exit_cir(struct picolcd_data *data) | |
132 | { | |
ae08e324 BP |
133 | struct rc_dev *rdev = data->rc_dev; |
134 | ||
135 | data->rc_dev = NULL; | |
4b8a8262 | 136 | rc_unregister_device(rdev); |
fabdbf2f BP |
137 | } |
138 |