| /* |
| * AT and PS/2 keyboard driver |
| * |
| * Copyright (c) 1999-2002 Vojtech Pavlik |
| */ |
| |
| /* |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| */ |
| |
| /* |
| * This driver can handle standard AT keyboards and PS/2 keyboards in |
| * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb |
| * input-only controllers and AT keyboards connected over a one way RS232 |
| * converter. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/init.h> |
| #include <linux/input.h> |
| #include <linux/serio.h> |
| #include <linux/workqueue.h> |
| #include <linux/libps2.h> |
| #include <linux/mutex.h> |
| |
| #define DRIVER_DESC "AT and PS/2 keyboard driver" |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| |
| static int atkbd_set = 2; |
| module_param_named(set, atkbd_set, int, 0); |
| MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)"); |
| |
| #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__) |
| static int atkbd_reset; |
| #else |
| static int atkbd_reset = 1; |
| #endif |
| module_param_named(reset, atkbd_reset, bool, 0); |
| MODULE_PARM_DESC(reset, "Reset keyboard during initialization"); |
| |
| static int atkbd_softrepeat; |
| module_param_named(softrepeat, atkbd_softrepeat, bool, 0); |
| MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat"); |
| |
| static int atkbd_softraw = 1; |
| module_param_named(softraw, atkbd_softraw, bool, 0); |
| MODULE_PARM_DESC(softraw, "Use software generated rawmode"); |
| |
| static int atkbd_scroll = 0; |
| module_param_named(scroll, atkbd_scroll, bool, 0); |
| MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards"); |
| |
| static int atkbd_extra; |
| module_param_named(extra, atkbd_extra, bool, 0); |
| MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards"); |
| |
| __obsolete_setup("atkbd_set="); |
| __obsolete_setup("atkbd_reset"); |
| __obsolete_setup("atkbd_softrepeat="); |
| |
| /* |
| * Scancode to keycode tables. These are just the default setting, and |
| * are loadable via an userland utility. |
| */ |
| |
| static unsigned char atkbd_set2_keycode[512] = { |
| |
| #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES |
| |
| /* XXX: need a more general approach */ |
| |
| #include "hpps2atkbd.h" /* include the keyboard scancodes */ |
| |
| #else |
| 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, |
| 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, |
| 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, |
| 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, |
| 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, |
| 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, |
| 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, |
| 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, |
| |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, |
| 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, |
| 159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142, |
| 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, |
| 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, |
| 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, |
| |
| 0, 0, 0, 65, 99, |
| #endif |
| }; |
| |
| static unsigned char atkbd_set3_keycode[512] = { |
| |
| 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60, |
| 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62, |
| 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64, |
| 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66, |
| 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68, |
| 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70, |
| 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104, |
| 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183, |
| |
| 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0, |
| 0,139,150,163,165,115,152,150,166,140,160,154,113,114,167,168, |
| 148,149,147,140 |
| }; |
| |
| static unsigned char atkbd_unxlate_table[128] = { |
| 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, |
| 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, |
| 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, |
| 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, |
| 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, |
| 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, |
| 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, |
| 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 |
| }; |
| |
| #define ATKBD_CMD_SETLEDS 0x10ed |
| #define ATKBD_CMD_GSCANSET 0x11f0 |
| #define ATKBD_CMD_SSCANSET 0x10f0 |
| #define ATKBD_CMD_GETID 0x02f2 |
| #define ATKBD_CMD_SETREP 0x10f3 |
| #define ATKBD_CMD_ENABLE 0x00f4 |
| #define ATKBD_CMD_RESET_DIS 0x00f5 |
| #define ATKBD_CMD_SETALL_MBR 0x00fa |
| #define ATKBD_CMD_RESET_BAT 0x02ff |
| #define ATKBD_CMD_RESEND 0x00fe |
| #define ATKBD_CMD_EX_ENABLE 0x10ea |
| #define ATKBD_CMD_EX_SETLEDS 0x20eb |
| #define ATKBD_CMD_OK_GETID 0x02e8 |
| |
| #define ATKBD_RET_ACK 0xfa |
| #define ATKBD_RET_NAK 0xfe |
| #define ATKBD_RET_BAT 0xaa |
| #define ATKBD_RET_EMUL0 0xe0 |
| #define ATKBD_RET_EMUL1 0xe1 |
| #define ATKBD_RET_RELEASE 0xf0 |
| #define ATKBD_RET_HANGUEL 0xf1 |
| #define ATKBD_RET_HANJA 0xf2 |
| #define ATKBD_RET_ERR 0xff |
| |
| #define ATKBD_KEY_UNKNOWN 0 |
| #define ATKBD_KEY_NULL 255 |
| |
| #define ATKBD_SCR_1 254 |
| #define ATKBD_SCR_2 253 |
| #define ATKBD_SCR_4 252 |
| #define ATKBD_SCR_8 251 |
| #define ATKBD_SCR_CLICK 250 |
| #define ATKBD_SCR_LEFT 249 |
| #define ATKBD_SCR_RIGHT 248 |
| |
| #define ATKBD_SPECIAL 248 |
| |
| #define ATKBD_LED_EVENT_BIT 0 |
| #define ATKBD_REP_EVENT_BIT 1 |
| |
| static struct { |
| unsigned char keycode; |
| unsigned char set2; |
| } atkbd_scroll_keys[] = { |
| { ATKBD_SCR_1, 0xc5 }, |
| { ATKBD_SCR_2, 0x9d }, |
| { ATKBD_SCR_4, 0xa4 }, |
| { ATKBD_SCR_8, 0x9b }, |
| { ATKBD_SCR_CLICK, 0xe0 }, |
| { ATKBD_SCR_LEFT, 0xcb }, |
| { ATKBD_SCR_RIGHT, 0xd2 }, |
| }; |
| |
| /* |
| * The atkbd control structure |
| */ |
| |
| struct atkbd { |
| |
| struct ps2dev ps2dev; |
| struct input_dev *dev; |
| |
| /* Written only during init */ |
| char name[64]; |
| char phys[32]; |
| |
| unsigned short id; |
| unsigned char keycode[512]; |
| unsigned char set; |
| unsigned char translated; |
| unsigned char extra; |
| unsigned char write; |
| unsigned char softrepeat; |
| unsigned char softraw; |
| unsigned char scroll; |
| unsigned char enabled; |
| |
| /* Accessed only from interrupt */ |
| unsigned char emul; |
| unsigned char resend; |
| unsigned char release; |
| unsigned char bat_xl; |
| unsigned char err_xl; |
| unsigned int last; |
| unsigned long time; |
| |
| struct work_struct event_work; |
| struct mutex event_mutex; |
| unsigned long event_mask; |
| }; |
| |
| static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, |
| ssize_t (*handler)(struct atkbd *, char *)); |
| static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, |
| ssize_t (*handler)(struct atkbd *, const char *, size_t)); |
| #define ATKBD_DEFINE_ATTR(_name) \ |
| static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ |
| static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \ |
| static ssize_t atkbd_do_show_##_name(struct device *d, struct device_attribute *attr, char *b) \ |
| { \ |
| return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ |
| } \ |
| static ssize_t atkbd_do_set_##_name(struct device *d, struct device_attribute *attr, const char *b, size_t s) \ |
| { \ |
| return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \ |
| } \ |
| static struct device_attribute atkbd_attr_##_name = \ |
| __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name); |
| |
| ATKBD_DEFINE_ATTR(extra); |
| ATKBD_DEFINE_ATTR(scroll); |
| ATKBD_DEFINE_ATTR(set); |
| ATKBD_DEFINE_ATTR(softrepeat); |
| ATKBD_DEFINE_ATTR(softraw); |
| |
| |
| static void atkbd_report_key(struct input_dev *dev, struct pt_regs *regs, int code, int value) |
| { |
| input_regs(dev, regs); |
| if (value == 3) { |
| input_report_key(dev, code, 1); |
| input_sync(dev); |
| input_report_key(dev, code, 0); |
| } else |
| input_event(dev, EV_KEY, code, value); |
| input_sync(dev); |
| } |
| |
| /* |
| * atkbd_interrupt(). Here takes place processing of data received from |
| * the keyboard into events. |
| */ |
| |
| static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data, |
| unsigned int flags, struct pt_regs *regs) |
| { |
| struct atkbd *atkbd = serio_get_drvdata(serio); |
| unsigned int code = data; |
| int scroll = 0, hscroll = 0, click = -1; |
| int value; |
| |
| #ifdef ATKBD_DEBUG |
| printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags); |
| #endif |
| |
| #if !defined(__i386__) && !defined (__x86_64__) |
| if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) { |
| printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags); |
| serio_write(serio, ATKBD_CMD_RESEND); |
| atkbd->resend = 1; |
| goto out; |
| } |
| |
| if (!flags && data == ATKBD_RET_ACK) |
| atkbd->resend = 0; |
| #endif |
| |
| if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK)) |
| if (ps2_handle_ack(&atkbd->ps2dev, data)) |
| goto out; |
| |
| if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD)) |
| if (ps2_handle_response(&atkbd->ps2dev, data)) |
| goto out; |
| |
| if (!atkbd->enabled) |
| goto out; |
| |
| input_event(atkbd->dev, EV_MSC, MSC_RAW, code); |
| |
| if (atkbd->translated) { |
| |
| if (atkbd->emul || |
| (code != ATKBD_RET_EMUL0 && code != ATKBD_RET_EMUL1 && |
| code != ATKBD_RET_HANGUEL && code != ATKBD_RET_HANJA && |
| (code != ATKBD_RET_ERR || atkbd->err_xl) && |
| (code != ATKBD_RET_BAT || atkbd->bat_xl))) { |
| atkbd->release = code >> 7; |
| code &= 0x7f; |
| } |
| |
| if (!atkbd->emul) { |
| if ((code & 0x7f) == (ATKBD_RET_BAT & 0x7f)) |
| atkbd->bat_xl = !(data >> 7); |
| if ((code & 0x7f) == (ATKBD_RET_ERR & 0x7f)) |
| atkbd->err_xl = !(data >> 7); |
| } |
| } |
| |
| switch (code) { |
| case ATKBD_RET_BAT: |
| atkbd->enabled = 0; |
| serio_reconnect(atkbd->ps2dev.serio); |
| goto out; |
| case ATKBD_RET_EMUL0: |
| atkbd->emul = 1; |
| goto out; |
| case ATKBD_RET_EMUL1: |
| atkbd->emul = 2; |
| goto out; |
| case ATKBD_RET_RELEASE: |
| atkbd->release = 1; |
| goto out; |
| case ATKBD_RET_HANGUEL: |
| atkbd_report_key(atkbd->dev, regs, KEY_HANGUEL, 3); |
| goto out; |
| case ATKBD_RET_HANJA: |
| atkbd_report_key(atkbd->dev, regs, KEY_HANJA, 3); |
| goto out; |
| case ATKBD_RET_ERR: |
| printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys); |
| goto out; |
| } |
| |
| if (atkbd->set != 3) |
| code = (code & 0x7f) | ((code & 0x80) << 1); |
| if (atkbd->emul) { |
| if (--atkbd->emul) |
| goto out; |
| code |= (atkbd->set != 3) ? 0x80 : 0x100; |
| } |
| |
| if (atkbd->keycode[code] != ATKBD_KEY_NULL) |
| input_event(atkbd->dev, EV_MSC, MSC_SCAN, code); |
| |
| switch (atkbd->keycode[code]) { |
| case ATKBD_KEY_NULL: |
| break; |
| case ATKBD_KEY_UNKNOWN: |
| if (data == ATKBD_RET_ACK || data == ATKBD_RET_NAK) { |
| printk(KERN_WARNING "atkbd.c: Spurious %s on %s. Some program, " |
| "like XFree86, might be trying access hardware directly.\n", |
| data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys); |
| } else { |
| printk(KERN_WARNING "atkbd.c: Unknown key %s " |
| "(%s set %d, code %#x on %s).\n", |
| atkbd->release ? "released" : "pressed", |
| atkbd->translated ? "translated" : "raw", |
| atkbd->set, code, serio->phys); |
| printk(KERN_WARNING "atkbd.c: Use 'setkeycodes %s%02x <keycode>' " |
| "to make it known.\n", |
| code & 0x80 ? "e0" : "", code & 0x7f); |
| } |
| input_sync(atkbd->dev); |
| break; |
| case ATKBD_SCR_1: |
| scroll = 1 - atkbd->release * 2; |
| break; |
| case ATKBD_SCR_2: |
| scroll = 2 - atkbd->release * 4; |
| break; |
| case ATKBD_SCR_4: |
| scroll = 4 - atkbd->release * 8; |
| break; |
| case ATKBD_SCR_8: |
| scroll = 8 - atkbd->release * 16; |
| break; |
| case ATKBD_SCR_CLICK: |
| click = !atkbd->release; |
| break; |
| case ATKBD_SCR_LEFT: |
| hscroll = -1; |
| break; |
| case ATKBD_SCR_RIGHT: |
| hscroll = 1; |
| break; |
| default: |
| value = atkbd->release ? 0 : |
| (1 + (!atkbd->softrepeat && test_bit(atkbd->keycode[code], atkbd->dev->key))); |
| |
| switch (value) { /* Workaround Toshiba laptop multiple keypress */ |
| case 0: |
| atkbd->last = 0; |
| break; |
| case 1: |
| atkbd->last = code; |
| atkbd->time = jiffies + msecs_to_jiffies(atkbd->dev->rep[REP_DELAY]) / 2; |
| break; |
| case 2: |
| if (!time_after(jiffies, atkbd->time) && atkbd->last == code) |
| value = 1; |
| break; |
| } |
| |
| atkbd_report_key(atkbd->dev, regs, atkbd->keycode[code], value); |
| } |
| |
| if (atkbd->scroll) { |
| input_regs(atkbd->dev, regs); |
| if (click != -1) |
| input_report_key(atkbd->dev, BTN_MIDDLE, click); |
| input_report_rel(atkbd->dev, REL_WHEEL, scroll); |
| input_report_rel(atkbd->dev, REL_HWHEEL, hscroll); |
| input_sync(atkbd->dev); |
| } |
| |
| atkbd->release = 0; |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| /* |
| * atkbd_event_work() is used to complete processing of events that |
| * can not be processed by input_event() which is often called from |
| * interrupt context. |
| */ |
| |
| static void atkbd_event_work(void *data) |
| { |
| const short period[32] = |
| { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125, |
| 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 }; |
| const short delay[4] = |
| { 250, 500, 750, 1000 }; |
| |
| struct atkbd *atkbd = data; |
| struct input_dev *dev = atkbd->dev; |
| unsigned char param[2]; |
| int i, j; |
| |
| mutex_lock(&atkbd->event_mutex); |
| |
| if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask)) { |
| param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0) |
| | (test_bit(LED_NUML, dev->led) ? 2 : 0) |
| | (test_bit(LED_CAPSL, dev->led) ? 4 : 0); |
| ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS); |
| |
| if (atkbd->extra) { |
| param[0] = 0; |
| param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0) |
| | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0) |
| | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0) |
| | (test_bit(LED_MISC, dev->led) ? 0x10 : 0) |
| | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0); |
| ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS); |
| } |
| } |
| |
| if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask)) { |
| i = j = 0; |
| while (i < 31 && period[i] < dev->rep[REP_PERIOD]) |
| i++; |
| while (j < 3 && delay[j] < dev->rep[REP_DELAY]) |
| j++; |
| dev->rep[REP_PERIOD] = period[i]; |
| dev->rep[REP_DELAY] = delay[j]; |
| param[0] = i | (j << 5); |
| ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETREP); |
| } |
| |
| mutex_unlock(&atkbd->event_mutex); |
| } |
| |
| /* |
| * Event callback from the input module. Events that change the state of |
| * the hardware are processed here. If action can not be performed in |
| * interrupt context it is offloaded to atkbd_event_work. |
| */ |
| |
| static int atkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
| { |
| struct atkbd *atkbd = dev->private; |
| |
| if (!atkbd->write) |
| return -1; |
| |
| switch (type) { |
| |
| case EV_LED: |
| set_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask); |
| wmb(); |
| schedule_work(&atkbd->event_work); |
| return 0; |
| |
| case EV_REP: |
| |
| if (!atkbd->softrepeat) { |
| set_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask); |
| wmb(); |
| schedule_work(&atkbd->event_work); |
| } |
| |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| /* |
| * atkbd_enable() signals that interrupt handler is allowed to |
| * generate input events. |
| */ |
| |
| static inline void atkbd_enable(struct atkbd *atkbd) |
| { |
| serio_pause_rx(atkbd->ps2dev.serio); |
| atkbd->enabled = 1; |
| serio_continue_rx(atkbd->ps2dev.serio); |
| } |
| |
| /* |
| * atkbd_disable() tells input handler that all incoming data except |
| * for ACKs and command response should be dropped. |
| */ |
| |
| static inline void atkbd_disable(struct atkbd *atkbd) |
| { |
| serio_pause_rx(atkbd->ps2dev.serio); |
| atkbd->enabled = 0; |
| serio_continue_rx(atkbd->ps2dev.serio); |
| } |
| |
| /* |
| * atkbd_probe() probes for an AT keyboard on a serio port. |
| */ |
| |
| static int atkbd_probe(struct atkbd *atkbd) |
| { |
| struct ps2dev *ps2dev = &atkbd->ps2dev; |
| unsigned char param[2]; |
| |
| /* |
| * Some systems, where the bit-twiddling when testing the io-lines of the |
| * controller may confuse the keyboard need a full reset of the keyboard. On |
| * these systems the BIOS also usually doesn't do it for us. |
| */ |
| |
| if (atkbd_reset) |
| if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT)) |
| printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys); |
| |
| /* |
| * Then we check the keyboard ID. We should get 0xab83 under normal conditions. |
| * Some keyboards report different values, but the first byte is always 0xab or |
| * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this |
| * should make sure we don't try to set the LEDs on it. |
| */ |
| |
| param[0] = param[1] = 0xa5; /* initialize with invalid values */ |
| if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) { |
| |
| /* |
| * If the get ID command failed, we check if we can at least set the LEDs on |
| * the keyboard. This should work on every keyboard out there. It also turns |
| * the LEDs off, which we want anyway. |
| */ |
| param[0] = 0; |
| if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) |
| return -1; |
| atkbd->id = 0xabba; |
| return 0; |
| } |
| |
| if (param[0] != 0xab && param[0] != 0xac && /* Regular and NCD Sun keyboards */ |
| param[0] != 0x2b && param[0] != 0x5d && /* Trust keyboard, raw and translated */ |
| param[0] != 0x60 && param[0] != 0x47) /* NMB SGI keyboard, raw and translated */ |
| return -1; |
| |
| atkbd->id = (param[0] << 8) | param[1]; |
| |
| if (atkbd->id == 0xaca1 && atkbd->translated) { |
| printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n"); |
| printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * atkbd_select_set checks if a keyboard has a working Set 3 support, and |
| * sets it into that. Unfortunately there are keyboards that can be switched |
| * to Set 3, but don't work well in that (BTC Multimedia ...) |
| */ |
| |
| static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra) |
| { |
| struct ps2dev *ps2dev = &atkbd->ps2dev; |
| unsigned char param[2]; |
| |
| atkbd->extra = 0; |
| /* |
| * For known special keyboards we can go ahead and set the correct set. |
| * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and |
| * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards. |
| */ |
| |
| if (atkbd->translated) |
| return 2; |
| |
| if (atkbd->id == 0xaca1) { |
| param[0] = 3; |
| ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET); |
| return 3; |
| } |
| |
| if (allow_extra) { |
| param[0] = 0x71; |
| if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) { |
| atkbd->extra = 1; |
| return 2; |
| } |
| } |
| |
| if (target_set != 3) |
| return 2; |
| |
| if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) { |
| atkbd->id = param[0] << 8 | param[1]; |
| return 2; |
| } |
| |
| param[0] = 3; |
| if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) |
| return 2; |
| |
| param[0] = 0; |
| if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET)) |
| return 2; |
| |
| if (param[0] != 3) { |
| param[0] = 2; |
| if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) |
| return 2; |
| } |
| |
| ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR); |
| |
| return 3; |
| } |
| |
| static int atkbd_activate(struct atkbd *atkbd) |
| { |
| struct ps2dev *ps2dev = &atkbd->ps2dev; |
| unsigned char param[1]; |
| |
| /* |
| * Set the LEDs to a defined state. |
| */ |
| |
| param[0] = 0; |
| if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) |
| return -1; |
| |
| /* |
| * Set autorepeat to fastest possible. |
| */ |
| |
| param[0] = 0; |
| if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP)) |
| return -1; |
| |
| /* |
| * Enable the keyboard to receive keystrokes. |
| */ |
| |
| if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) { |
| printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n", |
| ps2dev->serio->phys); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a |
| * reboot. |
| */ |
| |
| static void atkbd_cleanup(struct serio *serio) |
| { |
| struct atkbd *atkbd = serio_get_drvdata(serio); |
| ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT); |
| } |
| |
| |
| /* |
| * atkbd_disconnect() closes and frees. |
| */ |
| |
| static void atkbd_disconnect(struct serio *serio) |
| { |
| struct atkbd *atkbd = serio_get_drvdata(serio); |
| |
| atkbd_disable(atkbd); |
| |
| /* make sure we don't have a command in flight */ |
| synchronize_sched(); /* Allow atkbd_interrupt()s to complete. */ |
| flush_scheduled_work(); |
| |
| device_remove_file(&serio->dev, &atkbd_attr_extra); |
| device_remove_file(&serio->dev, &atkbd_attr_scroll); |
| device_remove_file(&serio->dev, &atkbd_attr_set); |
| device_remove_file(&serio->dev, &atkbd_attr_softrepeat); |
| device_remove_file(&serio->dev, &atkbd_attr_softraw); |
| |
| input_unregister_device(atkbd->dev); |
| serio_close(serio); |
| serio_set_drvdata(serio, NULL); |
| kfree(atkbd); |
| } |
| |
| |
| /* |
| * atkbd_set_keycode_table() initializes keyboard's keycode table |
| * according to the selected scancode set |
| */ |
| |
| static void atkbd_set_keycode_table(struct atkbd *atkbd) |
| { |
| int i, j; |
| |
| memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); |
| |
| if (atkbd->translated) { |
| for (i = 0; i < 128; i++) { |
| atkbd->keycode[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]]; |
| atkbd->keycode[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80]; |
| if (atkbd->scroll) |
| for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) |
| if ((atkbd_unxlate_table[i] | 0x80) == atkbd_scroll_keys[j].set2) |
| atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; |
| } |
| } else if (atkbd->set == 3) { |
| memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); |
| } else { |
| memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); |
| |
| if (atkbd->scroll) |
| for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) |
| atkbd->keycode[atkbd_scroll_keys[i].set2] = atkbd_scroll_keys[i].keycode; |
| } |
| } |
| |
| /* |
| * atkbd_set_device_attrs() sets up keyboard's input device structure |
| */ |
| |
| static void atkbd_set_device_attrs(struct atkbd *atkbd) |
| { |
| struct input_dev *input_dev = atkbd->dev; |
| int i; |
| |
| if (atkbd->extra) |
| snprintf(atkbd->name, sizeof(atkbd->name), |
| "AT Set 2 Extra keyboard"); |
| else |
| snprintf(atkbd->name, sizeof(atkbd->name), |
| "AT %s Set %d keyboard", |
| atkbd->translated ? "Translated" : "Raw", atkbd->set); |
| |
| snprintf(atkbd->phys, sizeof(atkbd->phys), |
| "%s/input0", atkbd->ps2dev.serio->phys); |
| |
| input_dev->name = atkbd->name; |
| input_dev->phys = atkbd->phys; |
| input_dev->id.bustype = BUS_I8042; |
| input_dev->id.vendor = 0x0001; |
| input_dev->id.product = atkbd->translated ? 1 : atkbd->set; |
| input_dev->id.version = atkbd->id; |
| input_dev->event = atkbd_event; |
| input_dev->private = atkbd; |
| input_dev->cdev.dev = &atkbd->ps2dev.serio->dev; |
| |
| input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_MSC); |
| |
| if (atkbd->write) { |
| input_dev->evbit[0] |= BIT(EV_LED); |
| input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL); |
| } |
| |
| if (atkbd->extra) |
| input_dev->ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) | |
| BIT(LED_SLEEP) | BIT(LED_MUTE) | BIT(LED_MISC); |
| |
| if (!atkbd->softrepeat) { |
| input_dev->rep[REP_DELAY] = 250; |
| input_dev->rep[REP_PERIOD] = 33; |
| } |
| |
| input_dev->mscbit[0] = atkbd->softraw ? BIT(MSC_SCAN) : BIT(MSC_RAW) | BIT(MSC_SCAN); |
| |
| if (atkbd->scroll) { |
| input_dev->evbit[0] |= BIT(EV_REL); |
| input_dev->relbit[0] = BIT(REL_WHEEL) | BIT(REL_HWHEEL); |
| set_bit(BTN_MIDDLE, input_dev->keybit); |
| } |
| |
| input_dev->keycode = atkbd->keycode; |
| input_dev->keycodesize = sizeof(unsigned char); |
| input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); |
| |
| for (i = 0; i < 512; i++) |
| if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL) |
| set_bit(atkbd->keycode[i], input_dev->keybit); |
| } |
| |
| /* |
| * atkbd_connect() is called when the serio module finds an interface |
| * that isn't handled yet by an appropriate device driver. We check if |
| * there is an AT keyboard out there and if yes, we register ourselves |
| * to the input module. |
| */ |
| |
| static int atkbd_connect(struct serio *serio, struct serio_driver *drv) |
| { |
| struct atkbd *atkbd; |
| struct input_dev *dev; |
| int err = -ENOMEM; |
| |
| atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); |
| dev = input_allocate_device(); |
| if (!atkbd || !dev) |
| goto fail; |
| |
| atkbd->dev = dev; |
| ps2_init(&atkbd->ps2dev, serio); |
| INIT_WORK(&atkbd->event_work, atkbd_event_work, atkbd); |
| mutex_init(&atkbd->event_mutex); |
| |
| switch (serio->id.type) { |
| |
| case SERIO_8042_XL: |
| atkbd->translated = 1; |
| case SERIO_8042: |
| if (serio->write) |
| atkbd->write = 1; |
| break; |
| } |
| |
| atkbd->softraw = atkbd_softraw; |
| atkbd->softrepeat = atkbd_softrepeat; |
| atkbd->scroll = atkbd_scroll; |
| |
| if (atkbd->softrepeat) |
| atkbd->softraw = 1; |
| |
| serio_set_drvdata(serio, atkbd); |
| |
| err = serio_open(serio, drv); |
| if (err) |
| goto fail; |
| |
| if (atkbd->write) { |
| |
| if (atkbd_probe(atkbd)) { |
| serio_close(serio); |
| err = -ENODEV; |
| goto fail; |
| } |
| |
| atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); |
| atkbd_activate(atkbd); |
| |
| } else { |
| atkbd->set = 2; |
| atkbd->id = 0xab00; |
| } |
| |
| atkbd_set_keycode_table(atkbd); |
| atkbd_set_device_attrs(atkbd); |
| |
| device_create_file(&serio->dev, &atkbd_attr_extra); |
| device_create_file(&serio->dev, &atkbd_attr_scroll); |
| device_create_file(&serio->dev, &atkbd_attr_set); |
| device_create_file(&serio->dev, &atkbd_attr_softrepeat); |
| device_create_file(&serio->dev, &atkbd_attr_softraw); |
| |
| atkbd_enable(atkbd); |
| |
| input_register_device(atkbd->dev); |
| |
| return 0; |
| |
| fail: serio_set_drvdata(serio, NULL); |
| input_free_device(dev); |
| kfree(atkbd); |
| return err; |
| } |
| |
| /* |
| * atkbd_reconnect() tries to restore keyboard into a sane state and is |
| * most likely called on resume. |
| */ |
| |
| static int atkbd_reconnect(struct serio *serio) |
| { |
| struct atkbd *atkbd = serio_get_drvdata(serio); |
| struct serio_driver *drv = serio->drv; |
| unsigned char param[1]; |
| |
| if (!atkbd || !drv) { |
| printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n"); |
| return -1; |
| } |
| |
| atkbd_disable(atkbd); |
| |
| if (atkbd->write) { |
| param[0] = (test_bit(LED_SCROLLL, atkbd->dev->led) ? 1 : 0) |
| | (test_bit(LED_NUML, atkbd->dev->led) ? 2 : 0) |
| | (test_bit(LED_CAPSL, atkbd->dev->led) ? 4 : 0); |
| |
| if (atkbd_probe(atkbd)) |
| return -1; |
| if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) |
| return -1; |
| |
| atkbd_activate(atkbd); |
| |
| if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS)) |
| return -1; |
| } |
| |
| atkbd_enable(atkbd); |
| |
| return 0; |
| } |
| |
| static struct serio_device_id atkbd_serio_ids[] = { |
| { |
| .type = SERIO_8042, |
| .proto = SERIO_ANY, |
| .id = SERIO_ANY, |
| .extra = SERIO_ANY, |
| }, |
| { |
| .type = SERIO_8042_XL, |
| .proto = SERIO_ANY, |
| .id = SERIO_ANY, |
| .extra = SERIO_ANY, |
| }, |
| { |
| .type = SERIO_RS232, |
| .proto = SERIO_PS2SER, |
| .id = SERIO_ANY, |
| .extra = SERIO_ANY, |
| }, |
| { 0 } |
| }; |
| |
| MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); |
| |
| static struct serio_driver atkbd_drv = { |
| .driver = { |
| .name = "atkbd", |
| }, |
| .description = DRIVER_DESC, |
| .id_table = atkbd_serio_ids, |
| .interrupt = atkbd_interrupt, |
| .connect = atkbd_connect, |
| .reconnect = atkbd_reconnect, |
| .disconnect = atkbd_disconnect, |
| .cleanup = atkbd_cleanup, |
| }; |
| |
| static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, |
| ssize_t (*handler)(struct atkbd *, char *)) |
| { |
| struct serio *serio = to_serio_port(dev); |
| int retval; |
| |
| retval = serio_pin_driver(serio); |
| if (retval) |
| return retval; |
| |
| if (serio->drv != &atkbd_drv) { |
| retval = -ENODEV; |
| goto out; |
| } |
| |
| retval = handler((struct atkbd *)serio_get_drvdata(serio), buf); |
| |
| out: |
| serio_unpin_driver(serio); |
| return retval; |
| } |
| |
| static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, |
| ssize_t (*handler)(struct atkbd *, const char *, size_t)) |
| { |
| struct serio *serio = to_serio_port(dev); |
| struct atkbd *atkbd; |
| int retval; |
| |
| retval = serio_pin_driver(serio); |
| if (retval) |
| return retval; |
| |
| if (serio->drv != &atkbd_drv) { |
| retval = -ENODEV; |
| goto out; |
| } |
| |
| atkbd = serio_get_drvdata(serio); |
| atkbd_disable(atkbd); |
| retval = handler(atkbd, buf, count); |
| atkbd_enable(atkbd); |
| |
| out: |
| serio_unpin_driver(serio); |
| return retval; |
| } |
| |
| static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) |
| { |
| return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); |
| } |
| |
| static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) |
| { |
| struct input_dev *new_dev; |
| unsigned long value; |
| char *rest; |
| |
| if (!atkbd->write) |
| return -EIO; |
| |
| value = simple_strtoul(buf, &rest, 10); |
| if (*rest || value > 1) |
| return -EINVAL; |
| |
| if (atkbd->extra != value) { |
| /* |
| * Since device's properties will change we need to |
| * unregister old device. But allocate new one first |
| * to make sure we have it. |
| */ |
| if (!(new_dev = input_allocate_device())) |
| return -ENOMEM; |
| input_unregister_device(atkbd->dev); |
| atkbd->dev = new_dev; |
| atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); |
| atkbd_activate(atkbd); |
| atkbd_set_device_attrs(atkbd); |
| input_register_device(atkbd->dev); |
| } |
| return count; |
| } |
| |
| static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) |
| { |
| return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); |
| } |
| |
| static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) |
| { |
| struct input_dev *new_dev; |
| unsigned long value; |
| char *rest; |
| |
| value = simple_strtoul(buf, &rest, 10); |
| if (*rest || value > 1) |
| return -EINVAL; |
| |
| if (atkbd->scroll != value) { |
| if (!(new_dev = input_allocate_device())) |
| return -ENOMEM; |
| input_unregister_device(atkbd->dev); |
| atkbd->dev = new_dev; |
| atkbd->scroll = value; |
| atkbd_set_keycode_table(atkbd); |
| atkbd_set_device_attrs(atkbd); |
| input_register_device(atkbd->dev); |
| } |
| return count; |
| } |
| |
| static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) |
| { |
| return sprintf(buf, "%d\n", atkbd->set); |
| } |
| |
| static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) |
| { |
| struct input_dev *new_dev; |
| unsigned long value; |
| char *rest; |
| |
| if (!atkbd->write) |
| return -EIO; |
| |
| value = simple_strtoul(buf, &rest, 10); |
| if (*rest || (value != 2 && value != 3)) |
| return -EINVAL; |
| |
| if (atkbd->set != value) { |
| if (!(new_dev = input_allocate_device())) |
| return -ENOMEM; |
| input_unregister_device(atkbd->dev); |
| atkbd->dev = new_dev; |
| atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); |
| atkbd_activate(atkbd); |
| atkbd_set_keycode_table(atkbd); |
| atkbd_set_device_attrs(atkbd); |
| input_register_device(atkbd->dev); |
| } |
| return count; |
| } |
| |
| static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) |
| { |
| return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); |
| } |
| |
| static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) |
| { |
| struct input_dev *new_dev; |
| unsigned long value; |
| char *rest; |
| |
| if (!atkbd->write) |
| return -EIO; |
| |
| value = simple_strtoul(buf, &rest, 10); |
| if (*rest || value > 1) |
| return -EINVAL; |
| |
| if (atkbd->softrepeat != value) { |
| if (!(new_dev = input_allocate_device())) |
| return -ENOMEM; |
| input_unregister_device(atkbd->dev); |
| atkbd->dev = new_dev; |
| atkbd->softrepeat = value; |
| if (atkbd->softrepeat) |
| atkbd->softraw = 1; |
| atkbd_set_device_attrs(atkbd); |
| input_register_device(atkbd->dev); |
| } |
| return count; |
| } |
| |
| |
| static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) |
| { |
| return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); |
| } |
| |
| static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) |
| { |
| struct input_dev *new_dev; |
| unsigned long value; |
| char *rest; |
| |
| value = simple_strtoul(buf, &rest, 10); |
| if (*rest || value > 1) |
| return -EINVAL; |
| |
| if (atkbd->softraw != value) { |
| if (!(new_dev = input_allocate_device())) |
| return -ENOMEM; |
| input_unregister_device(atkbd->dev); |
| atkbd->dev = new_dev; |
| atkbd->softraw = value; |
| atkbd_set_device_attrs(atkbd); |
| input_register_device(atkbd->dev); |
| } |
| return count; |
| } |
| |
| |
| static int __init atkbd_init(void) |
| { |
| serio_register_driver(&atkbd_drv); |
| return 0; |
| } |
| |
| static void __exit atkbd_exit(void) |
| { |
| serio_unregister_driver(&atkbd_drv); |
| } |
| |
| module_init(atkbd_init); |
| module_exit(atkbd_exit); |