^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Stowaway keyboard driver for Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2006 Marek Vasut
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Based on Newton keyboard driver for Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * by Justin Cormack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define DRIVER_DESC "Stowaway keyboard driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define SKBD_KEY_MASK 0x7f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define SKBD_RELEASE 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static unsigned char skbd_keycode[128] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 0, 0, 0, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 0, 0, 0, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct skbd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) unsigned char keycode[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct input_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct serio *serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) char phys[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static irqreturn_t skbd_interrupt(struct serio *serio, unsigned char data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct skbd *skbd = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct input_dev *dev = skbd->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (skbd->keycode[data & SKBD_KEY_MASK]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) !(data & SKBD_RELEASE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static int skbd_connect(struct serio *serio, struct serio_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct skbd *skbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (!skbd || !input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) skbd->serio = serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) skbd->dev = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) input_dev->name = "Stowaway Keyboard";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) input_dev->phys = skbd->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) input_dev->id.bustype = BUS_RS232;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) input_dev->id.vendor = SERIO_STOWAWAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) input_dev->id.product = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) input_dev->id.version = 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) input_dev->dev.parent = &serio->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) input_dev->keycode = skbd->keycode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) input_dev->keycodesize = sizeof(unsigned char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) input_dev->keycodemax = ARRAY_SIZE(skbd_keycode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) set_bit(skbd_keycode[i], input_dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) clear_bit(0, input_dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) serio_set_drvdata(serio, skbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) err = serio_open(serio, drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) err = input_register_device(skbd->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) goto fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) fail3: serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) fail2: serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) fail1: input_free_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) kfree(skbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static void skbd_disconnect(struct serio *serio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct skbd *skbd = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) input_unregister_device(skbd->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) kfree(skbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static const struct serio_device_id skbd_serio_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .type = SERIO_RS232,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .proto = SERIO_STOWAWAY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .id = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .extra = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) { 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) MODULE_DEVICE_TABLE(serio, skbd_serio_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct serio_driver skbd_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .name = "stowaway",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .description = DRIVER_DESC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .id_table = skbd_serio_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .interrupt = skbd_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .connect = skbd_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .disconnect = skbd_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) module_serio_driver(skbd_drv);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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