[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/input/keyboard/lkkbd.c b/src/kernel/linux/v4.14/drivers/input/keyboard/lkkbd.c
new file mode 100644
index 0000000..471d538
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/input/keyboard/lkkbd.c
@@ -0,0 +1,733 @@
+/*
+ * Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
+ */
+
+/*
+ * LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik
+ */
+
+/*
+ * DEC LK201 and LK401 keyboard driver for Linux (primary for DECstations
+ * and VAXstations, but can also be used on any standard RS232 with an
+ * adaptor).
+ *
+ * DISCLAIMER: This works for _me_. If you break anything by using the
+ * information given below, I will _not_ be liable!
+ *
+ * RJ10 pinout: To DE9: Or DB25:
+ * 1 - RxD <----> Pin 3 (TxD) <-> Pin 2 (TxD)
+ * 2 - GND <----> Pin 5 (GND) <-> Pin 7 (GND)
+ * 4 - TxD <----> Pin 2 (RxD) <-> Pin 3 (RxD)
+ * 3 - +12V (from HDD drive connector), DON'T connect to DE9 or DB25!!!
+ *
+ * Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For
+ * RJ10, it's like this:
+ *
+ * __=__ Hold the plug in front of you, cable downwards,
+ * /___/| nose is hidden behind the plug. Now, pin 1 is at
+ * |1234|| the left side, pin 4 at the right and 2 and 3 are
+ * |IIII|| in between, of course:)
+ * | ||
+ * |____|/
+ * || So the adaptor consists of three connected cables
+ * || for data transmission (RxD and TxD) and signal ground.
+ * Additionally, you have to get +12V from somewhere.
+ * Most easily, you'll get that from a floppy or HDD power connector.
+ * It's the yellow cable there (black is ground and red is +5V).
+ *
+ * The keyboard and all the commands it understands are documented in
+ * "VCB02 Video Subsystem - Technical Manual", EK-104AA-TM-001. This
+ * document is LK201 specific, but LK401 is mostly compatible. It comes
+ * up in LK201 mode and doesn't report any of the additional keys it
+ * has. These need to be switched on with the LK_CMD_ENABLE_LK401
+ * command. You'll find this document (scanned .pdf file) on MANX,
+ * a search engine specific to DEC documentation. Try
+ * http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/workqueue.h>
+
+#define DRIVER_DESC "LK keyboard driver"
+
+MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Known parameters:
+ * bell_volume
+ * keyclick_volume
+ * ctrlclick_volume
+ *
+ * Please notice that there's not yet an API to set these at runtime.
+ */
+static int bell_volume = 100; /* % */
+module_param(bell_volume, int, 0);
+MODULE_PARM_DESC(bell_volume, "Bell volume (in %). default is 100%");
+
+static int keyclick_volume = 100; /* % */
+module_param(keyclick_volume, int, 0);
+MODULE_PARM_DESC(keyclick_volume, "Keyclick volume (in %), default is 100%");
+
+static int ctrlclick_volume = 100; /* % */
+module_param(ctrlclick_volume, int, 0);
+MODULE_PARM_DESC(ctrlclick_volume, "Ctrlclick volume (in %), default is 100%");
+
+static int lk201_compose_is_alt;
+module_param(lk201_compose_is_alt, int, 0);
+MODULE_PARM_DESC(lk201_compose_is_alt,
+ "If set non-zero, LK201' Compose key will act as an Alt key");
+
+
+
+#undef LKKBD_DEBUG
+#ifdef LKKBD_DEBUG
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...) do {} while (0)
+#endif
+
+/* LED control */
+#define LK_LED_WAIT 0x81
+#define LK_LED_COMPOSE 0x82
+#define LK_LED_SHIFTLOCK 0x84
+#define LK_LED_SCROLLLOCK 0x88
+#define LK_CMD_LED_ON 0x13
+#define LK_CMD_LED_OFF 0x11
+
+/* Mode control */
+#define LK_MODE_DOWN 0x80
+#define LK_MODE_AUTODOWN 0x82
+#define LK_MODE_UPDOWN 0x86
+#define LK_CMD_SET_MODE(mode, div) ((mode) | ((div) << 3))
+
+/* Misc commands */
+#define LK_CMD_ENABLE_KEYCLICK 0x1b
+#define LK_CMD_DISABLE_KEYCLICK 0x99
+#define LK_CMD_DISABLE_BELL 0xa1
+#define LK_CMD_SOUND_BELL 0xa7
+#define LK_CMD_ENABLE_BELL 0x23
+#define LK_CMD_DISABLE_CTRCLICK 0xb9
+#define LK_CMD_ENABLE_CTRCLICK 0xbb
+#define LK_CMD_SET_DEFAULTS 0xd3
+#define LK_CMD_POWERCYCLE_RESET 0xfd
+#define LK_CMD_ENABLE_LK401 0xe9
+#define LK_CMD_REQUEST_ID 0xab
+
+/* Misc responses from keyboard */
+#define LK_STUCK_KEY 0x3d
+#define LK_SELFTEST_FAILED 0x3e
+#define LK_ALL_KEYS_UP 0xb3
+#define LK_METRONOME 0xb4
+#define LK_OUTPUT_ERROR 0xb5
+#define LK_INPUT_ERROR 0xb6
+#define LK_KBD_LOCKED 0xb7
+#define LK_KBD_TEST_MODE_ACK 0xb8
+#define LK_PREFIX_KEY_DOWN 0xb9
+#define LK_MODE_CHANGE_ACK 0xba
+#define LK_RESPONSE_RESERVED 0xbb
+
+#define LK_NUM_KEYCODES 256
+#define LK_NUM_IGNORE_BYTES 6
+
+static unsigned short lkkbd_keycode[LK_NUM_KEYCODES] = {
+ [0x56] = KEY_F1,
+ [0x57] = KEY_F2,
+ [0x58] = KEY_F3,
+ [0x59] = KEY_F4,
+ [0x5a] = KEY_F5,
+ [0x64] = KEY_F6,
+ [0x65] = KEY_F7,
+ [0x66] = KEY_F8,
+ [0x67] = KEY_F9,
+ [0x68] = KEY_F10,
+ [0x71] = KEY_F11,
+ [0x72] = KEY_F12,
+ [0x73] = KEY_F13,
+ [0x74] = KEY_F14,
+ [0x7c] = KEY_F15,
+ [0x7d] = KEY_F16,
+ [0x80] = KEY_F17,
+ [0x81] = KEY_F18,
+ [0x82] = KEY_F19,
+ [0x83] = KEY_F20,
+ [0x8a] = KEY_FIND,
+ [0x8b] = KEY_INSERT,
+ [0x8c] = KEY_DELETE,
+ [0x8d] = KEY_SELECT,
+ [0x8e] = KEY_PAGEUP,
+ [0x8f] = KEY_PAGEDOWN,
+ [0x92] = KEY_KP0,
+ [0x94] = KEY_KPDOT,
+ [0x95] = KEY_KPENTER,
+ [0x96] = KEY_KP1,
+ [0x97] = KEY_KP2,
+ [0x98] = KEY_KP3,
+ [0x99] = KEY_KP4,
+ [0x9a] = KEY_KP5,
+ [0x9b] = KEY_KP6,
+ [0x9c] = KEY_KPCOMMA,
+ [0x9d] = KEY_KP7,
+ [0x9e] = KEY_KP8,
+ [0x9f] = KEY_KP9,
+ [0xa0] = KEY_KPMINUS,
+ [0xa1] = KEY_PROG1,
+ [0xa2] = KEY_PROG2,
+ [0xa3] = KEY_PROG3,
+ [0xa4] = KEY_PROG4,
+ [0xa7] = KEY_LEFT,
+ [0xa8] = KEY_RIGHT,
+ [0xa9] = KEY_DOWN,
+ [0xaa] = KEY_UP,
+ [0xab] = KEY_RIGHTSHIFT,
+ [0xac] = KEY_LEFTALT,
+ [0xad] = KEY_COMPOSE, /* Right Compose, that is. */
+ [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */
+ [0xaf] = KEY_LEFTCTRL,
+ [0xb0] = KEY_CAPSLOCK,
+ [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */
+ [0xb2] = KEY_RIGHTALT,
+ [0xbc] = KEY_BACKSPACE,
+ [0xbd] = KEY_ENTER,
+ [0xbe] = KEY_TAB,
+ [0xbf] = KEY_ESC,
+ [0xc0] = KEY_1,
+ [0xc1] = KEY_Q,
+ [0xc2] = KEY_A,
+ [0xc3] = KEY_Z,
+ [0xc5] = KEY_2,
+ [0xc6] = KEY_W,
+ [0xc7] = KEY_S,
+ [0xc8] = KEY_X,
+ [0xc9] = KEY_102ND,
+ [0xcb] = KEY_3,
+ [0xcc] = KEY_E,
+ [0xcd] = KEY_D,
+ [0xce] = KEY_C,
+ [0xd0] = KEY_4,
+ [0xd1] = KEY_R,
+ [0xd2] = KEY_F,
+ [0xd3] = KEY_V,
+ [0xd4] = KEY_SPACE,
+ [0xd6] = KEY_5,
+ [0xd7] = KEY_T,
+ [0xd8] = KEY_G,
+ [0xd9] = KEY_B,
+ [0xdb] = KEY_6,
+ [0xdc] = KEY_Y,
+ [0xdd] = KEY_H,
+ [0xde] = KEY_N,
+ [0xe0] = KEY_7,
+ [0xe1] = KEY_U,
+ [0xe2] = KEY_J,
+ [0xe3] = KEY_M,
+ [0xe5] = KEY_8,
+ [0xe6] = KEY_I,
+ [0xe7] = KEY_K,
+ [0xe8] = KEY_COMMA,
+ [0xea] = KEY_9,
+ [0xeb] = KEY_O,
+ [0xec] = KEY_L,
+ [0xed] = KEY_DOT,
+ [0xef] = KEY_0,
+ [0xf0] = KEY_P,
+ [0xf2] = KEY_SEMICOLON,
+ [0xf3] = KEY_SLASH,
+ [0xf5] = KEY_EQUAL,
+ [0xf6] = KEY_RIGHTBRACE,
+ [0xf7] = KEY_BACKSLASH,
+ [0xf9] = KEY_MINUS,
+ [0xfa] = KEY_LEFTBRACE,
+ [0xfb] = KEY_APOSTROPHE,
+};
+
+#define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \
+ if (test_bit(LED, (LK)->dev->led)) \
+ VAR_ON |= BITS; \
+ else \
+ VAR_OFF |= BITS; \
+ } while (0)
+
+/*
+ * Per-keyboard data
+ */
+struct lkkbd {
+ unsigned short keycode[LK_NUM_KEYCODES];
+ int ignore_bytes;
+ unsigned char id[LK_NUM_IGNORE_BYTES];
+ struct input_dev *dev;
+ struct serio *serio;
+ struct work_struct tq;
+ char name[64];
+ char phys[32];
+ char type;
+ int bell_volume;
+ int keyclick_volume;
+ int ctrlclick_volume;
+};
+
+#ifdef LKKBD_DEBUG
+/*
+ * Responses from the keyboard and mapping back to their names.
+ */
+static struct {
+ unsigned char value;
+ unsigned char *name;
+} lk_response[] = {
+#define RESPONSE(x) { .value = (x), .name = #x, }
+ RESPONSE(LK_STUCK_KEY),
+ RESPONSE(LK_SELFTEST_FAILED),
+ RESPONSE(LK_ALL_KEYS_UP),
+ RESPONSE(LK_METRONOME),
+ RESPONSE(LK_OUTPUT_ERROR),
+ RESPONSE(LK_INPUT_ERROR),
+ RESPONSE(LK_KBD_LOCKED),
+ RESPONSE(LK_KBD_TEST_MODE_ACK),
+ RESPONSE(LK_PREFIX_KEY_DOWN),
+ RESPONSE(LK_MODE_CHANGE_ACK),
+ RESPONSE(LK_RESPONSE_RESERVED),
+#undef RESPONSE
+};
+
+static unsigned char *response_name(unsigned char value)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(lk_response); i++)
+ if (lk_response[i].value == value)
+ return lk_response[i].name;
+
+ return "<unknown>";
+}
+#endif /* LKKBD_DEBUG */
+
+/*
+ * Calculate volume parameter byte for a given volume.
+ */
+static unsigned char volume_to_hw(int volume_percent)
+{
+ unsigned char ret = 0;
+
+ if (volume_percent < 0)
+ volume_percent = 0;
+ if (volume_percent > 100)
+ volume_percent = 100;
+
+ if (volume_percent >= 0)
+ ret = 7;
+ if (volume_percent >= 13) /* 12.5 */
+ ret = 6;
+ if (volume_percent >= 25)
+ ret = 5;
+ if (volume_percent >= 38) /* 37.5 */
+ ret = 4;
+ if (volume_percent >= 50)
+ ret = 3;
+ if (volume_percent >= 63) /* 62.5 */
+ ret = 2; /* This is the default volume */
+ if (volume_percent >= 75)
+ ret = 1;
+ if (volume_percent >= 88) /* 87.5 */
+ ret = 0;
+
+ ret |= 0x80;
+
+ return ret;
+}
+
+static void lkkbd_detection_done(struct lkkbd *lk)
+{
+ int i;
+
+ /*
+ * Reset setting for Compose key. Let Compose be KEY_COMPOSE.
+ */
+ lk->keycode[0xb1] = KEY_COMPOSE;
+
+ /*
+ * Print keyboard name and modify Compose=Alt on user's request.
+ */
+ switch (lk->id[4]) {
+ case 1:
+ strlcpy(lk->name, "DEC LK201 keyboard", sizeof(lk->name));
+
+ if (lk201_compose_is_alt)
+ lk->keycode[0xb1] = KEY_LEFTALT;
+ break;
+
+ case 2:
+ strlcpy(lk->name, "DEC LK401 keyboard", sizeof(lk->name));
+ break;
+
+ default:
+ strlcpy(lk->name, "Unknown DEC keyboard", sizeof(lk->name));
+ printk(KERN_ERR
+ "lkkbd: keyboard on %s is unknown, please report to "
+ "Jan-Benedict Glaw <jbglaw@lug-owl.de>\n", lk->phys);
+ printk(KERN_ERR "lkkbd: keyboard ID'ed as:");
+ for (i = 0; i < LK_NUM_IGNORE_BYTES; i++)
+ printk(" 0x%02x", lk->id[i]);
+ printk("\n");
+ break;
+ }
+
+ printk(KERN_INFO "lkkbd: keyboard on %s identified as: %s\n",
+ lk->phys, lk->name);
+
+ /*
+ * Report errors during keyboard boot-up.
+ */
+ switch (lk->id[2]) {
+ case 0x00:
+ /* All okay */
+ break;
+
+ case LK_STUCK_KEY:
+ printk(KERN_ERR "lkkbd: Stuck key on keyboard at %s\n",
+ lk->phys);
+ break;
+
+ case LK_SELFTEST_FAILED:
+ printk(KERN_ERR
+ "lkkbd: Selftest failed on keyboard at %s, "
+ "keyboard may not work properly\n", lk->phys);
+ break;
+
+ default:
+ printk(KERN_ERR
+ "lkkbd: Unknown error %02x on keyboard at %s\n",
+ lk->id[2], lk->phys);
+ break;
+ }
+
+ /*
+ * Try to hint user if there's a stuck key.
+ */
+ if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0)
+ printk(KERN_ERR
+ "Scancode of stuck key is 0x%02x, keycode is 0x%04x\n",
+ lk->id[3], lk->keycode[lk->id[3]]);
+}
+
+/*
+ * lkkbd_interrupt() is called by the low level driver when a character
+ * is received.
+ */
+static irqreturn_t lkkbd_interrupt(struct serio *serio,
+ unsigned char data, unsigned int flags)
+{
+ struct lkkbd *lk = serio_get_drvdata(serio);
+ struct input_dev *input_dev = lk->dev;
+ unsigned int keycode;
+ int i;
+
+ DBG(KERN_INFO "Got byte 0x%02x\n", data);
+
+ if (lk->ignore_bytes > 0) {
+ DBG(KERN_INFO "Ignoring a byte on %s\n", lk->name);
+ lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
+
+ if (lk->ignore_bytes == 0)
+ lkkbd_detection_done(lk);
+
+ return IRQ_HANDLED;
+ }
+
+ switch (data) {
+ case LK_ALL_KEYS_UP:
+ for (i = 0; i < ARRAY_SIZE(lkkbd_keycode); i++)
+ input_report_key(input_dev, lk->keycode[i], 0);
+ input_sync(input_dev);
+ break;
+
+ case 0x01:
+ DBG(KERN_INFO "Got 0x01, scheduling re-initialization\n");
+ lk->ignore_bytes = LK_NUM_IGNORE_BYTES;
+ lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
+ schedule_work(&lk->tq);
+ break;
+
+ case LK_METRONOME:
+ case LK_OUTPUT_ERROR:
+ case LK_INPUT_ERROR:
+ case LK_KBD_LOCKED:
+ case LK_KBD_TEST_MODE_ACK:
+ case LK_PREFIX_KEY_DOWN:
+ case LK_MODE_CHANGE_ACK:
+ case LK_RESPONSE_RESERVED:
+ DBG(KERN_INFO "Got %s and don't know how to handle...\n",
+ response_name(data));
+ break;
+
+ default:
+ keycode = lk->keycode[data];
+ if (keycode != KEY_RESERVED) {
+ input_report_key(input_dev, keycode,
+ !test_bit(keycode, input_dev->key));
+ input_sync(input_dev);
+ } else {
+ printk(KERN_WARNING
+ "%s: Unknown key with scancode 0x%02x on %s.\n",
+ __FILE__, data, lk->name);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void lkkbd_toggle_leds(struct lkkbd *lk)
+{
+ struct serio *serio = lk->serio;
+ unsigned char leds_on = 0;
+ unsigned char leds_off = 0;
+
+ CHECK_LED(lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK);
+ CHECK_LED(lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE);
+ CHECK_LED(lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK);
+ CHECK_LED(lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT);
+ if (leds_on != 0) {
+ serio_write(serio, LK_CMD_LED_ON);
+ serio_write(serio, leds_on);
+ }
+ if (leds_off != 0) {
+ serio_write(serio, LK_CMD_LED_OFF);
+ serio_write(serio, leds_off);
+ }
+}
+
+static void lkkbd_toggle_keyclick(struct lkkbd *lk, bool on)
+{
+ struct serio *serio = lk->serio;
+
+ if (on) {
+ DBG("%s: Activating key clicks\n", __func__);
+ serio_write(serio, LK_CMD_ENABLE_KEYCLICK);
+ serio_write(serio, volume_to_hw(lk->keyclick_volume));
+ serio_write(serio, LK_CMD_ENABLE_CTRCLICK);
+ serio_write(serio, volume_to_hw(lk->ctrlclick_volume));
+ } else {
+ DBG("%s: Deactivating key clicks\n", __func__);
+ serio_write(serio, LK_CMD_DISABLE_KEYCLICK);
+ serio_write(serio, LK_CMD_DISABLE_CTRCLICK);
+ }
+
+}
+
+/*
+ * lkkbd_event() handles events from the input module.
+ */
+static int lkkbd_event(struct input_dev *dev,
+ unsigned int type, unsigned int code, int value)
+{
+ struct lkkbd *lk = input_get_drvdata(dev);
+
+ switch (type) {
+ case EV_LED:
+ lkkbd_toggle_leds(lk);
+ return 0;
+
+ case EV_SND:
+ switch (code) {
+ case SND_CLICK:
+ lkkbd_toggle_keyclick(lk, value);
+ return 0;
+
+ case SND_BELL:
+ if (value != 0)
+ serio_write(lk->serio, LK_CMD_SOUND_BELL);
+
+ return 0;
+ }
+
+ break;
+
+ default:
+ printk(KERN_ERR "%s(): Got unknown type %d, code %d, value %d\n",
+ __func__, type, code, value);
+ }
+
+ return -1;
+}
+
+/*
+ * lkkbd_reinit() sets leds and beeps to a state the computer remembers they
+ * were in.
+ */
+static void lkkbd_reinit(struct work_struct *work)
+{
+ struct lkkbd *lk = container_of(work, struct lkkbd, tq);
+ int division;
+
+ /* Ask for ID */
+ serio_write(lk->serio, LK_CMD_REQUEST_ID);
+
+ /* Reset parameters */
+ serio_write(lk->serio, LK_CMD_SET_DEFAULTS);
+
+ /* Set LEDs */
+ lkkbd_toggle_leds(lk);
+
+ /*
+ * Try to activate extended LK401 mode. This command will
+ * only work with a LK401 keyboard and grants access to
+ * LAlt, RAlt, RCompose and RShift.
+ */
+ serio_write(lk->serio, LK_CMD_ENABLE_LK401);
+
+ /* Set all keys to UPDOWN mode */
+ for (division = 1; division <= 14; division++)
+ serio_write(lk->serio,
+ LK_CMD_SET_MODE(LK_MODE_UPDOWN, division));
+
+ /* Enable bell and set volume */
+ serio_write(lk->serio, LK_CMD_ENABLE_BELL);
+ serio_write(lk->serio, volume_to_hw(lk->bell_volume));
+
+ /* Enable/disable keyclick (and possibly set volume) */
+ lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd));
+
+ /* Sound the bell if needed */
+ if (test_bit(SND_BELL, lk->dev->snd))
+ serio_write(lk->serio, LK_CMD_SOUND_BELL);
+}
+
+/*
+ * lkkbd_connect() probes for a LK keyboard and fills the necessary structures.
+ */
+static int lkkbd_connect(struct serio *serio, struct serio_driver *drv)
+{
+ struct lkkbd *lk;
+ struct input_dev *input_dev;
+ int i;
+ int err;
+
+ lk = kzalloc(sizeof(struct lkkbd), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!lk || !input_dev) {
+ err = -ENOMEM;
+ goto fail1;
+ }
+
+ lk->serio = serio;
+ lk->dev = input_dev;
+ INIT_WORK(&lk->tq, lkkbd_reinit);
+ lk->bell_volume = bell_volume;
+ lk->keyclick_volume = keyclick_volume;
+ lk->ctrlclick_volume = ctrlclick_volume;
+ memcpy(lk->keycode, lkkbd_keycode, sizeof(lk->keycode));
+
+ strlcpy(lk->name, "DEC LK keyboard", sizeof(lk->name));
+ snprintf(lk->phys, sizeof(lk->phys), "%s/input0", serio->phys);
+
+ input_dev->name = lk->name;
+ input_dev->phys = lk->phys;
+ input_dev->id.bustype = BUS_RS232;
+ input_dev->id.vendor = SERIO_LKKBD;
+ input_dev->id.product = 0;
+ input_dev->id.version = 0x0100;
+ input_dev->dev.parent = &serio->dev;
+ input_dev->event = lkkbd_event;
+
+ input_set_drvdata(input_dev, lk);
+
+ __set_bit(EV_KEY, input_dev->evbit);
+ __set_bit(EV_LED, input_dev->evbit);
+ __set_bit(EV_SND, input_dev->evbit);
+ __set_bit(EV_REP, input_dev->evbit);
+ __set_bit(LED_CAPSL, input_dev->ledbit);
+ __set_bit(LED_SLEEP, input_dev->ledbit);
+ __set_bit(LED_COMPOSE, input_dev->ledbit);
+ __set_bit(LED_SCROLLL, input_dev->ledbit);
+ __set_bit(SND_BELL, input_dev->sndbit);
+ __set_bit(SND_CLICK, input_dev->sndbit);
+
+ input_dev->keycode = lk->keycode;
+ input_dev->keycodesize = sizeof(lk->keycode[0]);
+ input_dev->keycodemax = ARRAY_SIZE(lk->keycode);
+
+ for (i = 0; i < LK_NUM_KEYCODES; i++)
+ __set_bit(lk->keycode[i], input_dev->keybit);
+ __clear_bit(KEY_RESERVED, input_dev->keybit);
+
+ serio_set_drvdata(serio, lk);
+
+ err = serio_open(serio, drv);
+ if (err)
+ goto fail2;
+
+ err = input_register_device(lk->dev);
+ if (err)
+ goto fail3;
+
+ serio_write(lk->serio, LK_CMD_POWERCYCLE_RESET);
+
+ return 0;
+
+ fail3: serio_close(serio);
+ fail2: serio_set_drvdata(serio, NULL);
+ fail1: input_free_device(input_dev);
+ kfree(lk);
+ return err;
+}
+
+/*
+ * lkkbd_disconnect() unregisters and closes behind us.
+ */
+static void lkkbd_disconnect(struct serio *serio)
+{
+ struct lkkbd *lk = serio_get_drvdata(serio);
+
+ input_get_device(lk->dev);
+ input_unregister_device(lk->dev);
+ serio_close(serio);
+ serio_set_drvdata(serio, NULL);
+ input_put_device(lk->dev);
+ kfree(lk);
+}
+
+static const struct serio_device_id lkkbd_serio_ids[] = {
+ {
+ .type = SERIO_RS232,
+ .proto = SERIO_LKKBD,
+ .id = SERIO_ANY,
+ .extra = SERIO_ANY,
+ },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids);
+
+static struct serio_driver lkkbd_drv = {
+ .driver = {
+ .name = "lkkbd",
+ },
+ .description = DRIVER_DESC,
+ .id_table = lkkbd_serio_ids,
+ .connect = lkkbd_connect,
+ .disconnect = lkkbd_disconnect,
+ .interrupt = lkkbd_interrupt,
+};
+
+module_serio_driver(lkkbd_drv);