^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) * Copyright (c) 2000 Justin Cormack
^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) * Newton keyboard driver for Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /*
^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) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define DRIVER_DESC "Newton keyboard driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define NKBD_KEY 0x7f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define NKBD_PRESS 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static unsigned char nkbd_keycode[128] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct nkbd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned char keycode[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct input_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct serio *serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) char phys[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static irqreturn_t nkbd_interrupt(struct serio *serio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) unsigned char data, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct nkbd *nkbd = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* invalid scan codes are probably the init sequence, so we ignore them */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (nkbd->keycode[data & NKBD_KEY]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) input_sync(nkbd->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) else if (data == 0xe7) /* end of init sequence */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int nkbd_connect(struct serio *serio, struct serio_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct nkbd *nkbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (!nkbd || !input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) nkbd->serio = serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) nkbd->dev = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) input_dev->name = "Newton Keyboard";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) input_dev->phys = nkbd->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) input_dev->id.bustype = BUS_RS232;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) input_dev->id.vendor = SERIO_NEWTON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) input_dev->id.product = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) input_dev->id.version = 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) input_dev->dev.parent = &serio->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) input_dev->keycode = nkbd->keycode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) input_dev->keycodesize = sizeof(unsigned char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) for (i = 0; i < 128; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) set_bit(nkbd->keycode[i], input_dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) clear_bit(0, input_dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) serio_set_drvdata(serio, nkbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) err = serio_open(serio, drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) err = input_register_device(nkbd->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) goto fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) fail3: serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) fail2: serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) fail1: input_free_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) kfree(nkbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static void nkbd_disconnect(struct serio *serio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct nkbd *nkbd = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) input_unregister_device(nkbd->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) kfree(nkbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static const struct serio_device_id nkbd_serio_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .type = SERIO_RS232,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .proto = SERIO_NEWTON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .id = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .extra = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) { 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static struct serio_driver nkbd_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .name = "newtonkbd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .description = DRIVER_DESC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .id_table = nkbd_serio_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .interrupt = nkbd_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .connect = nkbd_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .disconnect = nkbd_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) module_serio_driver(nkbd_drv);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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