1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * drivers/input/keyboard/jornada720_kbd.c |
4 | * |
5 | * HP Jornada 720 keyboard platform driver |
6 | * |
7 | * Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@Gmail.com> |
8 | * |
9 | * Copyright (C) 2006 jornada 720 kbd driver by |
10 | Filip Zyzniewsk <Filip.Zyzniewski@tefnet.plX |
11 | * based on (C) 2004 jornada 720 kbd driver by |
12 | Alex Lange <chicken@handhelds.org> |
13 | */ |
14 | #include <linux/device.h> |
15 | #include <linux/errno.h> |
16 | #include <linux/interrupt.h> |
17 | #include <linux/input.h> |
18 | #include <linux/kernel.h> |
19 | #include <linux/module.h> |
20 | #include <linux/platform_device.h> |
21 | #include <linux/slab.h> |
22 | |
23 | #include <mach/jornada720.h> |
24 | |
25 | MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>" ); |
26 | MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver" ); |
27 | MODULE_LICENSE("GPL v2" ); |
28 | |
29 | static unsigned short jornada_std_keymap[128] = { /* ROW */ |
30 | 0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, /* #1 */ |
31 | KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, /* -> */ |
32 | 0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, /* #2 */ |
33 | KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0, /* -> */ |
34 | 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, /* #3 */ |
35 | KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0, /* -> */ |
36 | 0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, /* #4 */ |
37 | KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0, /* -> */ |
38 | 0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, /* #5 */ |
39 | KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0, /* -> */ |
40 | 0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0, /* #6 */ |
41 | KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE, /* -> */ |
42 | 0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK, /* -> */ |
43 | KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0, /* -> */ |
44 | 0, 0, 0, KEY_POWER, /* -> */ |
45 | }; |
46 | |
47 | struct jornadakbd { |
48 | unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)]; |
49 | struct input_dev *input; |
50 | }; |
51 | |
52 | static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id) |
53 | { |
54 | struct platform_device *pdev = dev_id; |
55 | struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); |
56 | struct input_dev *input = jornadakbd->input; |
57 | u8 count, kbd_data, scan_code; |
58 | |
59 | /* startup ssp with spinlock */ |
60 | jornada_ssp_start(); |
61 | |
62 | if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) { |
63 | dev_dbg(&pdev->dev, |
64 | "GetKeycode command failed with ETIMEDOUT, flushed bus\n" ); |
65 | } else { |
66 | /* How many keycodes are waiting for us? */ |
67 | count = jornada_ssp_byte(TXDUMMY); |
68 | |
69 | /* Lets drag them out one at a time */ |
70 | while (count--) { |
71 | /* Exchange TxDummy for location (keymap[kbddata]) */ |
72 | kbd_data = jornada_ssp_byte(TXDUMMY); |
73 | scan_code = kbd_data & 0x7f; |
74 | |
75 | input_event(dev: input, EV_MSC, MSC_SCAN, value: scan_code); |
76 | input_report_key(dev: input, code: jornadakbd->keymap[scan_code], |
77 | value: !(kbd_data & 0x80)); |
78 | input_sync(dev: input); |
79 | } |
80 | } |
81 | |
82 | /* release spinlock and turn off ssp */ |
83 | jornada_ssp_end(); |
84 | |
85 | return IRQ_HANDLED; |
86 | }; |
87 | |
88 | static int jornada720_kbd_probe(struct platform_device *pdev) |
89 | { |
90 | struct jornadakbd *jornadakbd; |
91 | struct input_dev *input_dev; |
92 | int i, err, irq; |
93 | |
94 | irq = platform_get_irq(pdev, 0); |
95 | if (irq <= 0) |
96 | return irq < 0 ? irq : -EINVAL; |
97 | |
98 | jornadakbd = devm_kzalloc(dev: &pdev->dev, size: sizeof(*jornadakbd), GFP_KERNEL); |
99 | input_dev = devm_input_allocate_device(&pdev->dev); |
100 | if (!jornadakbd || !input_dev) |
101 | return -ENOMEM; |
102 | |
103 | platform_set_drvdata(pdev, data: jornadakbd); |
104 | |
105 | memcpy(jornadakbd->keymap, jornada_std_keymap, |
106 | sizeof(jornada_std_keymap)); |
107 | jornadakbd->input = input_dev; |
108 | |
109 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); |
110 | input_dev->name = "HP Jornada 720 keyboard" ; |
111 | input_dev->phys = "jornadakbd/input0" ; |
112 | input_dev->keycode = jornadakbd->keymap; |
113 | input_dev->keycodesize = sizeof(unsigned short); |
114 | input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap); |
115 | input_dev->id.bustype = BUS_HOST; |
116 | input_dev->dev.parent = &pdev->dev; |
117 | |
118 | for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++) |
119 | __set_bit(jornadakbd->keymap[i], input_dev->keybit); |
120 | __clear_bit(KEY_RESERVED, input_dev->keybit); |
121 | |
122 | input_set_capability(dev: input_dev, EV_MSC, MSC_SCAN); |
123 | |
124 | err = devm_request_irq(dev: &pdev->dev, irq, handler: jornada720_kbd_interrupt, |
125 | IRQF_TRIGGER_FALLING, devname: "jornadakbd" , dev_id: pdev); |
126 | if (err) { |
127 | dev_err(&pdev->dev, "unable to grab IRQ%d: %d\n" , irq, err); |
128 | return err; |
129 | } |
130 | |
131 | return input_register_device(jornadakbd->input); |
132 | }; |
133 | |
134 | /* work with hotplug and coldplug */ |
135 | MODULE_ALIAS("platform:jornada720_kbd" ); |
136 | |
137 | static struct platform_driver jornada720_kbd_driver = { |
138 | .driver = { |
139 | .name = "jornada720_kbd" , |
140 | }, |
141 | .probe = jornada720_kbd_probe, |
142 | }; |
143 | module_platform_driver(jornada720_kbd_driver); |
144 | |