diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/input/keyboard/atkbd.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/input/keyboard/atkbd.c')
-rw-r--r-- | drivers/input/keyboard/atkbd.c | 1148 |
1 files changed, 1148 insertions, 0 deletions
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c new file mode 100644 index 000000000000..f7304f0ce542 --- /dev/null +++ b/drivers/input/keyboard/atkbd.c @@ -0,0 +1,1148 @@ +/* + * 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> + +#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 = 1; +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 + +static struct { + unsigned char keycode; + unsigned char set2; +} atkbd_scroll_keys[] = { + { ATKBD_SCR_1, 0xc5 }, + { ATKBD_SCR_2, 0xa9 }, + { ATKBD_SCR_4, 0xb6 }, + { ATKBD_SCR_8, 0xa7 }, + { ATKBD_SCR_CLICK, 0xe0 }, + { ATKBD_SCR_LEFT, 0xcb }, + { ATKBD_SCR_RIGHT, 0xd2 }, +}; + +/* + * The atkbd control structure + */ + +struct atkbd { + + struct ps2dev ps2dev; + + /* Written only during init */ + char name[64]; + char phys[32]; + struct input_dev dev; + + 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 int last; + unsigned long time; +}; + +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, char *b) \ +{ \ + return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ +} \ +static ssize_t atkbd_do_set_##_name(struct device *d, 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 || + (code == ATKBD_RET_BAT && !atkbd->bat_xl))) { + atkbd->release = code >> 7; + code &= 0x7f; + } + + if (!atkbd->emul && + (code & 0x7f) == (ATKBD_RET_BAT & 0x7f)) + atkbd->bat_xl = !atkbd->release; + } + + switch (code) { + case ATKBD_RET_BAT: + atkbd->enabled = 0; + serio_rescan(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; +} + +/* + * Event callback from the input module. Events that change the state of + * the hardware are processed here. + */ + +static int atkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +{ + struct atkbd *atkbd = dev->private; + 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 }; + unsigned char param[2]; + int i, j; + + if (!atkbd->write) + return -1; + + switch (type) { + + case EV_LED: + + 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_schedule_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_schedule_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS); + } + + return 0; + + + case EV_REP: + + if (atkbd->softrepeat) return 0; + + i = j = 0; + while (i < 32 && period[i] < dev->rep[REP_PERIOD]) i++; + while (j < 4 && 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_schedule_command(&atkbd->ps2dev, param, ATKBD_CMD_SETREP); + + 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_kernel(); + 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_device_attrs() 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) +{ + int i; + + memset(&atkbd->dev, 0, sizeof(struct input_dev)); + + init_input_dev(&atkbd->dev); + + atkbd->dev.name = atkbd->name; + atkbd->dev.phys = atkbd->phys; + atkbd->dev.id.bustype = BUS_I8042; + atkbd->dev.id.vendor = 0x0001; + atkbd->dev.id.product = atkbd->translated ? 1 : atkbd->set; + atkbd->dev.id.version = atkbd->id; + atkbd->dev.event = atkbd_event; + atkbd->dev.private = atkbd; + atkbd->dev.dev = &atkbd->ps2dev.serio->dev; + + atkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_MSC); + + if (atkbd->write) { + atkbd->dev.evbit[0] |= BIT(EV_LED); + atkbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL); + } + + if (atkbd->extra) + atkbd->dev.ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) | + BIT(LED_SLEEP) | BIT(LED_MUTE) | BIT(LED_MISC); + + if (!atkbd->softrepeat) { + atkbd->dev.rep[REP_DELAY] = 250; + atkbd->dev.rep[REP_PERIOD] = 33; + } + + atkbd->dev.mscbit[0] = atkbd->softraw ? BIT(MSC_SCAN) : BIT(MSC_RAW) | BIT(MSC_SCAN); + + if (atkbd->scroll) { + atkbd->dev.evbit[0] |= BIT(EV_REL); + atkbd->dev.relbit[0] = BIT(REL_WHEEL) | BIT(REL_HWHEEL); + set_bit(BTN_MIDDLE, atkbd->dev.keybit); + } + + atkbd->dev.keycode = atkbd->keycode; + atkbd->dev.keycodesize = sizeof(unsigned char); + atkbd->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], atkbd->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; + int err; + + if (!(atkbd = kmalloc(sizeof(struct atkbd), GFP_KERNEL))) + return - ENOMEM; + + memset(atkbd, 0, sizeof(struct atkbd)); + + ps2_init(&atkbd->ps2dev, serio); + + 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->write) + atkbd->softrepeat = 1; + + if (atkbd->softrepeat) + atkbd->softraw = 1; + + serio_set_drvdata(serio, atkbd); + + err = serio_open(serio, drv); + if (err) { + serio_set_drvdata(serio, NULL); + kfree(atkbd); + return err; + } + + if (atkbd->write) { + + if (atkbd_probe(atkbd)) { + serio_close(serio); + serio_set_drvdata(serio, NULL); + kfree(atkbd); + return -ENODEV; + } + + atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); + atkbd_activate(atkbd); + + } else { + atkbd->set = 2; + atkbd->id = 0xab00; + } + + if (atkbd->extra) + sprintf(atkbd->name, "AT Set 2 Extra keyboard"); + else + sprintf(atkbd->name, "AT %s Set %d keyboard", + atkbd->translated ? "Translated" : "Raw", atkbd->set); + + sprintf(atkbd->phys, "%s/input0", serio->phys); + + atkbd_set_keycode_table(atkbd); + atkbd_set_device_attrs(atkbd); + + input_register_device(&atkbd->dev); + + 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); + + printk(KERN_INFO "input: %s on %s\n", atkbd->name, serio->phys); + + return 0; +} + +/* + * 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) +{ + 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) { + /* unregister device as it's properties will change */ + input_unregister_device(&atkbd->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) +{ + unsigned long value; + char *rest; + + value = simple_strtoul(buf, &rest, 10); + if (*rest || value > 1) + return -EINVAL; + + if (atkbd->scroll != value) { + /* unregister device as it's properties will change */ + input_unregister_device(&atkbd->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) +{ + 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) { + /* unregister device as it's properties will change */ + input_unregister_device(&atkbd->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) +{ + 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) { + /* unregister device as it's properties will change */ + input_unregister_device(&atkbd->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) +{ + unsigned long value; + char *rest; + + value = simple_strtoul(buf, &rest, 10); + if (*rest || value > 1) + return -EINVAL; + + if (atkbd->softraw != value) { + /* unregister device as it's properties will change */ + input_unregister_device(&atkbd->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); |