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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [tc/] [lk201.c] - Blame information for rev 1765

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/*
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1999-2002 Harald Koerfgen <hkoerfg@web.de>
 * Copyright (C) 2001, 2002, 2003  Maciej W. Rozycki <macro@ds2.pg.gda.pl>
 */
 
#include <linux/config.h>
 
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kbd_ll.h>
#include <linux/kbd_kern.h>
#include <linux/vt_kern.h>
 
#include <asm/keyboard.h>
#include <asm/dec/tc.h>
#include <asm/dec/machtype.h>
 
#include "zs.h"
#include "lk201.h"
 
/*
 * Only handle DECstations that have an LK201 interface.
 * Maxine uses LK501 at the Access.Bus and various DECsystems
 * have no keyboard interface at all.
 */
#define LK_IFACE        (mips_machtype == MACH_DS23100    || \
                         mips_machtype == MACH_DS5000_200 || \
                         mips_machtype == MACH_DS5000_1XX || \
                         mips_machtype == MACH_DS5000_2X0)
/*
 * These use the Z8530 SCC.  Others use the DZ11.
 */
#define LK_IFACE_ZS     (mips_machtype == MACH_DS5000_1XX || \
                         mips_machtype == MACH_DS5000_2X0)
 
/* Simple translation table for the SysRq keys */
 
#ifdef CONFIG_MAGIC_SYSRQ
/*
 * Actually no translation at all, at least until we figure out
 * how to define SysRq for LK201 and friends. --macro
 */
unsigned char lk201_sysrq_xlate[128];
unsigned char *kbd_sysrq_xlate = lk201_sysrq_xlate;
 
unsigned char kbd_sysrq_key = -1;
#endif
 
#define KEYB_LINE       3
 
static int __init lk201_init(struct dec_serial *);
static void __init lk201_info(struct dec_serial *);
static void lk201_kbd_rx_char(unsigned char, unsigned char);
 
struct zs_hook lk201_kbdhook = {
        .init_channel   = lk201_init,
        .init_info      = lk201_info,
        .rx_char        = NULL,
        .poll_rx_char   = NULL,
        .poll_tx_char   = NULL,
        .cflags         = B4800 | CS8 | CSTOPB | CLOCAL
};
 
/*
 * This is used during keyboard initialisation
 */
static unsigned char lk201_reset_string[] = {
        LK_CMD_SET_DEFAULTS,
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 1),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 2),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 3),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 4),
        LK_CMD_MODE(LK_MODE_DOWN_UP, 5),
        LK_CMD_MODE(LK_MODE_DOWN_UP, 6),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 7),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 8),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 9),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 10),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 11),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 12),
        LK_CMD_MODE(LK_MODE_DOWN, 13),
        LK_CMD_MODE(LK_MODE_RPT_DOWN, 14),
        LK_CMD_DIS_KEYCLK,
        LK_CMD_ENB_BELL, LK_PARAM_VOLUME(4),
};
 
static struct dec_serial* lk201kbd_info;
 
static int lk201_send(struct dec_serial *info, unsigned char ch)
{
        if (info->hook->poll_tx_char(info, ch)) {
                printk(KERN_ERR "lk201: transmit timeout\n");
                return -EIO;
        }
        return 0;
}
 
static inline int lk201_get_id(struct dec_serial *info)
{
        return lk201_send(info, LK_CMD_REQ_ID);
}
 
static int lk201_reset(struct dec_serial *info)
{
        int i, r;
 
        for (i = 0; i < sizeof(lk201_reset_string); i++) {
                r = lk201_send(info, lk201_reset_string[i]);
                if (r < 0)
                        return r;
        }
        return 0;
}
 
static void lk201_report(unsigned char id[6])
{
        char *report = "lk201: keyboard attached, ";
 
        switch (id[2]) {
        case LK_STAT_PWRUP_OK:
                printk(KERN_INFO "%sself-test OK\n", report);
                break;
        case LK_STAT_PWRUP_KDOWN:
                /* The keyboard will resend the power-up ID
                   after all keys are released, so we don't
                   bother handling the error specially.  Still
                   there may be a short-circuit inside.
                 */
                printk(KERN_ERR "%skey down (stuck?), code: 0x%02x\n",
                       report, id[3]);
                break;
        case LK_STAT_PWRUP_ERROR:
                printk(KERN_ERR "%sself-test failure\n", report);
                break;
        default:
                printk(KERN_ERR "%sunknown error: 0x%02x\n",
                       report, id[2]);
        }
}
 
static void lk201_id(unsigned char id[6])
{
        /*
         * Report whether there is an LK201 or an LK401
         * The LK401 has ALT keys...
         */
        switch (id[4]) {
        case 1:
                printk(KERN_INFO "lk201: LK201 detected\n");
                break;
        case 2:
                printk(KERN_INFO "lk201: LK401 detected\n");
                break;
        case 3:
                printk(KERN_INFO "lk201: LK443 detected\n");
                break;
        case 4:
                printk(KERN_INFO "lk201: LK421 detected\n");
                break;
        default:
                printk(KERN_WARNING
                       "lk201: unknown keyboard detected, ID %d\n", id[4]);
                printk(KERN_WARNING "lk201: ... please report to "
                       "<linux-mips@linux-mips.org>\n");
        }
}
 
#define DEFAULT_KEYB_REP_DELAY  (250/5) /* [5ms] */
#define DEFAULT_KEYB_REP_RATE   30      /* [cps] */
 
static struct kbd_repeat kbdrate = {
        DEFAULT_KEYB_REP_DELAY,
        DEFAULT_KEYB_REP_RATE
};
 
static void parse_kbd_rate(struct kbd_repeat *r)
{
        if (r->delay <= 0)
                r->delay = kbdrate.delay;
        if (r->rate <= 0)
                r->rate = kbdrate.rate;
 
        if (r->delay < 5)
                r->delay = 5;
        if (r->delay > 630)
                r->delay = 630;
        if (r->rate < 12)
                r->rate = 12;
        if (r->rate > 127)
                r->rate = 127;
        if (r->rate == 125)
                r->rate = 124;
}
 
static int write_kbd_rate(struct kbd_repeat *rep)
{
        struct dec_serial* info = lk201kbd_info;
        int delay, rate;
        int i;
 
        delay = rep->delay / 5;
        rate = rep->rate;
        for (i = 0; i < 4; i++) {
                if (info->hook->poll_tx_char(info, LK_CMD_RPT_RATE(i)))
                        return 1;
                if (info->hook->poll_tx_char(info, LK_PARAM_DELAY(delay)))
                        return 1;
                if (info->hook->poll_tx_char(info, LK_PARAM_RATE(rate)))
                        return 1;
        }
        return 0;
}
 
static int lk201kbd_rate(struct kbd_repeat *rep)
{
        if (rep == NULL)
                return -EINVAL;
 
        parse_kbd_rate(rep);
 
        if (write_kbd_rate(rep)) {
                memcpy(rep, &kbdrate, sizeof(struct kbd_repeat));
                return -EIO;
        }
 
        memcpy(&kbdrate, rep, sizeof(struct kbd_repeat));
 
        return 0;
}
 
static void lk201kd_mksound(unsigned int hz, unsigned int ticks)
{
        struct dec_serial* info = lk201kbd_info;
 
        if (!ticks)
                return;
 
        /*
         * Can't set frequency and we "approximate"
         * duration by volume. ;-)
         */
        ticks /= HZ / 32;
        if (ticks > 7)
                ticks = 7;
        ticks = 7 - ticks;
 
        if (info->hook->poll_tx_char(info, LK_CMD_ENB_BELL))
                return;
        if (info->hook->poll_tx_char(info, LK_PARAM_VOLUME(ticks)))
                return;
        if (info->hook->poll_tx_char(info, LK_CMD_BELL))
                return;
}
 
void kbd_leds(unsigned char leds)
{
        struct dec_serial* info = lk201kbd_info;
        unsigned char l = 0;
 
        if (!info)              /* FIXME */
                return;
 
        /* FIXME -- Only Hold and Lock LEDs for now. --macro */
        if (leds & LED_SCR)
                l |= LK_LED_HOLD;
        if (leds & LED_CAP)
                l |= LK_LED_LOCK;
 
        if (info->hook->poll_tx_char(info, LK_CMD_LEDS_ON))
                return;
        if (info->hook->poll_tx_char(info, LK_PARAM_LED_MASK(l)))
                return;
        if (info->hook->poll_tx_char(info, LK_CMD_LEDS_OFF))
                return;
        if (info->hook->poll_tx_char(info, LK_PARAM_LED_MASK(~l)))
                return;
}
 
int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
{
        return -EINVAL;
}
 
int kbd_getkeycode(unsigned int scancode)
{
        return -EINVAL;
}
 
int kbd_translate(unsigned char scancode, unsigned char *keycode,
                  char raw_mode)
{
        *keycode = scancode;
        return 1;
}
 
char kbd_unexpected_up(unsigned char keycode)
{
        return 0x80;
}
 
static void lk201_kbd_rx_char(unsigned char ch, unsigned char stat)
{
        static unsigned char id[6];
        static int id_i;
 
        static int shift_state = 0;
        static int prev_scancode;
        unsigned char c = scancodeRemap[ch];
 
        if (stat && stat != TTY_OVERRUN) {
                printk(KERN_ERR "lk201: keyboard receive error: 0x%02x\n",
                       stat);
                return;
        }
 
        /* Assume this is a power-up ID. */
        if (ch == LK_STAT_PWRUP_ID && !id_i) {
                id[id_i++] = ch;
                return;
        }
 
        /* Handle the power-up sequence. */
        if (id_i) {
                id[id_i++] = ch;
                if (id_i == 4) {
                        /* OK, the power-up concluded. */
                        lk201_report(id);
                        if (id[2] == LK_STAT_PWRUP_OK)
                                lk201_get_id(lk201kbd_info);
                        else {
                                id_i = 0;
                                printk(KERN_ERR "lk201: keyboard power-up "
                                       "error, skipping initialization\n");
                        }
                } else if (id_i == 6) {
                        /* We got the ID; report it and start operation. */
                        id_i = 0;
                        lk201_id(id);
                        lk201_reset(lk201kbd_info);
                }
                return;
        }
 
        /* Everything else is a scancode/status response. */
        id_i = 0;
        switch (ch) {
        case LK_STAT_RESUME_ERR:
        case LK_STAT_ERROR:
        case LK_STAT_INHIBIT_ACK:
        case LK_STAT_TEST_ACK:
        case LK_STAT_MODE_KEYDOWN:
        case LK_STAT_MODE_ACK:
                break;
        case LK_KEY_LOCK:
                shift_state ^= LK_LOCK;
                handle_scancode(c, (shift_state & LK_LOCK) ? 1 : 0);
                break;
        case LK_KEY_SHIFT:
                shift_state ^= LK_SHIFT;
                handle_scancode(c, (shift_state & LK_SHIFT) ? 1 : 0);
                break;
        case LK_KEY_CTRL:
                shift_state ^= LK_CTRL;
                handle_scancode(c, (shift_state & LK_CTRL) ? 1 : 0);
                break;
        case LK_KEY_COMP:
                shift_state ^= LK_COMP;
                handle_scancode(c, (shift_state & LK_COMP) ? 1 : 0);
                break;
        case LK_KEY_RELEASE:
                if (shift_state & LK_SHIFT)
                        handle_scancode(scancodeRemap[LK_KEY_SHIFT], 0);
                if (shift_state & LK_CTRL)
                        handle_scancode(scancodeRemap[LK_KEY_CTRL], 0);
                if (shift_state & LK_COMP)
                        handle_scancode(scancodeRemap[LK_KEY_COMP], 0);
                if (shift_state & LK_LOCK)
                        handle_scancode(scancodeRemap[LK_KEY_LOCK], 0);
                shift_state = 0;
                break;
        case LK_KEY_REPEAT:
                handle_scancode(prev_scancode, 1);
                break;
        default:
                prev_scancode = c;
                handle_scancode(c, 1);
                break;
        }
        tasklet_schedule(&keyboard_tasklet);
}
 
static void __init lk201_info(struct dec_serial *info)
{
}
 
static int __init lk201_init(struct dec_serial *info)
{
        /* First install handlers. */
        lk201kbd_info = info;
        kbd_rate = lk201kbd_rate;
        kd_mksound = lk201kd_mksound;
 
        info->hook->rx_char = lk201_kbd_rx_char;
 
        /* Then just issue a reset -- the handlers will do the rest. */
        lk201_send(info, LK_CMD_POWER_UP);
 
        return 0;
}
 
void __init kbd_init_hw(void)
{
        extern int register_zs_hook(unsigned int, struct zs_hook *);
        extern int unregister_zs_hook(unsigned int);
 
        /* Maxine uses LK501 at the Access.Bus. */
        if (!LK_IFACE)
                return;
 
        printk(KERN_INFO "lk201: DECstation LK keyboard driver v0.05.\n");
 
        if (LK_IFACE_ZS) {
                /*
                 * kbd_init_hw() is being called before
                 * rs_init() so just register the kbd hook
                 * and let zs_init do the rest :-)
                 */
                if(!register_zs_hook(KEYB_LINE, &lk201_kbdhook))
                        unregister_zs_hook(KEYB_LINE);
        } else {
                /*
                 * TODO: modify dz.c to allow similar hooks
                 * for LK201 handling on DS2100, DS3100, and DS5000/200
                 */
                printk(KERN_ERR "lk201: support for DZ11 not yet ready.\n");
        }
}

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [tc/] [lk201.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`*`
3			`* This file is subject to the terms and conditions of the GNU General Public`
4			`* License. See the file "COPYING" in the main directory of this archive`
5			`* for more details.`
6			`*`
7			`* Copyright (C) 1999-2002 Harald Koerfgen <hkoerfg@web.de>`
8			`* Copyright (C) 2001, 2002, 2003 Maciej W. Rozycki <macro@ds2.pg.gda.pl>`
9			`*/`
10
11			`#include <linux/config.h>`
12
13			`#include <linux/errno.h>`
14			`#include <linux/sched.h>`
15			`#include <linux/tty.h>`
16			`#include <linux/kernel.h>`
17			`#include <linux/init.h>`
18			`#include <linux/delay.h>`
19			`#include <linux/kbd_ll.h>`
20			`#include <linux/kbd_kern.h>`
21			`#include <linux/vt_kern.h>`
22
23			`#include <asm/keyboard.h>`
24			`#include <asm/dec/tc.h>`
25			`#include <asm/dec/machtype.h>`
26
27			`#include "zs.h"`
28			`#include "lk201.h"`
29
30			`/*`
31			`* Only handle DECstations that have an LK201 interface.`
32			`* Maxine uses LK501 at the Access.Bus and various DECsystems`
33			`* have no keyboard interface at all.`
34			`*/`
35			`#define LK_IFACE (mips_machtype == MACH_DS23100 \|\| \`
36			`mips_machtype == MACH_DS5000_200 \|\| \`
37			`mips_machtype == MACH_DS5000_1XX \|\| \`
38			`mips_machtype == MACH_DS5000_2X0)`
39			`/*`
40			`* These use the Z8530 SCC. Others use the DZ11.`
41			`*/`
42			`#define LK_IFACE_ZS (mips_machtype == MACH_DS5000_1XX \|\| \`
43			`mips_machtype == MACH_DS5000_2X0)`
44
45			`/* Simple translation table for the SysRq keys */`
46
47			`#ifdef CONFIG_MAGIC_SYSRQ`
48			`/*`
49			`* Actually no translation at all, at least until we figure out`
50			`* how to define SysRq for LK201 and friends. --macro`
51			`*/`
52			`unsigned char lk201_sysrq_xlate[128];`
53			`unsigned char *kbd_sysrq_xlate = lk201_sysrq_xlate;`
54
55			`unsigned char kbd_sysrq_key = -1;`
56			`#endif`
57
58			`#define KEYB_LINE 3`
59
60			`static int __init lk201_init(struct dec_serial *);`
61			`static void __init lk201_info(struct dec_serial *);`
62			`static void lk201_kbd_rx_char(unsigned char, unsigned char);`
63
64			`struct zs_hook lk201_kbdhook = {`
65			`.init_channel = lk201_init,`
66			`.init_info = lk201_info,`
67			`.rx_char = NULL,`
68			`.poll_rx_char = NULL,`
69			`.poll_tx_char = NULL,`
70			`.cflags = B4800 \| CS8 \| CSTOPB \| CLOCAL`
71			`};`
72
73			`/*`
74			`* This is used during keyboard initialisation`
75			`*/`
76			`static unsigned char lk201_reset_string[] = {`
77			`LK_CMD_SET_DEFAULTS,`
78			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 1),`
79			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 2),`
80			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 3),`
81			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 4),`
82			`LK_CMD_MODE(LK_MODE_DOWN_UP, 5),`
83			`LK_CMD_MODE(LK_MODE_DOWN_UP, 6),`
84			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 7),`
85			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 8),`
86			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 9),`
87			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 10),`
88			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 11),`
89			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 12),`
90			`LK_CMD_MODE(LK_MODE_DOWN, 13),`
91			`LK_CMD_MODE(LK_MODE_RPT_DOWN, 14),`
92			`LK_CMD_DIS_KEYCLK,`
93			`LK_CMD_ENB_BELL, LK_PARAM_VOLUME(4),`
94			`};`
95
96			`static struct dec_serial* lk201kbd_info;`
97
98			`static int lk201_send(struct dec_serial *info, unsigned char ch)`
99			`{`
100			`if (info->hook->poll_tx_char(info, ch)) {`
101			`printk(KERN_ERR "lk201: transmit timeout\n");`
102			`return -EIO;`
103			`}`
104			`return 0;`
105			`}`
106
107			`static inline int lk201_get_id(struct dec_serial *info)`
108			`{`
109			`return lk201_send(info, LK_CMD_REQ_ID);`
110			`}`
111
112			`static int lk201_reset(struct dec_serial *info)`
113			`{`
114			`int i, r;`
115
116			`for (i = 0; i < sizeof(lk201_reset_string); i++) {`
117			`r = lk201_send(info, lk201_reset_string[i]);`
118			`if (r < 0)`
119			`return r;`
120			`}`
121			`return 0;`
122			`}`
123
124			`static void lk201_report(unsigned char id[6])`
125			`{`
126			`char *report = "lk201: keyboard attached, ";`
127
128			`switch (id[2]) {`
129			`case LK_STAT_PWRUP_OK:`
130			`printk(KERN_INFO "%sself-test OK\n", report);`
131			`break;`
132			`case LK_STAT_PWRUP_KDOWN:`
133			`/* The keyboard will resend the power-up ID`
134			`after all keys are released, so we don't`
135			`bother handling the error specially. Still`
136			`there may be a short-circuit inside.`
137			`*/`
138			`printk(KERN_ERR "%skey down (stuck?), code: 0x%02x\n",`
139			`report, id[3]);`
140			`break;`
141			`case LK_STAT_PWRUP_ERROR:`
142			`printk(KERN_ERR "%sself-test failure\n", report);`
143			`break;`
144			`default:`
145			`printk(KERN_ERR "%sunknown error: 0x%02x\n",`
146			`report, id[2]);`
147			`}`
148			`}`
149
150			`static void lk201_id(unsigned char id[6])`
151			`{`
152			`/*`
153			`* Report whether there is an LK201 or an LK401`
154			`* The LK401 has ALT keys...`
155			`*/`
156			`switch (id[4]) {`
157			`case 1:`
158			`printk(KERN_INFO "lk201: LK201 detected\n");`
159			`break;`
160			`case 2:`
161			`printk(KERN_INFO "lk201: LK401 detected\n");`
162			`break;`
163			`case 3:`
164			`printk(KERN_INFO "lk201: LK443 detected\n");`
165			`break;`
166			`case 4:`
167			`printk(KERN_INFO "lk201: LK421 detected\n");`
168			`break;`
169			`default:`
170			`printk(KERN_WARNING`
171			`"lk201: unknown keyboard detected, ID %d\n", id[4]);`
172			`printk(KERN_WARNING "lk201: ... please report to "`
173			`"<linux-mips@linux-mips.org>\n");`
174			`}`
175			`}`
176
177			`#define DEFAULT_KEYB_REP_DELAY (250/5) /* [5ms] */`
178			`#define DEFAULT_KEYB_REP_RATE 30 /* [cps] */`
179
180			`static struct kbd_repeat kbdrate = {`
181			`DEFAULT_KEYB_REP_DELAY,`
182			`DEFAULT_KEYB_REP_RATE`
183			`};`
184
185			`static void parse_kbd_rate(struct kbd_repeat *r)`
186			`{`
187			`if (r->delay <= 0)`
188			`r->delay = kbdrate.delay;`
189			`if (r->rate <= 0)`
190			`r->rate = kbdrate.rate;`
191
192			`if (r->delay < 5)`
193			`r->delay = 5;`
194			`if (r->delay > 630)`
195			`r->delay = 630;`
196			`if (r->rate < 12)`
197			`r->rate = 12;`
198			`if (r->rate > 127)`
199			`r->rate = 127;`
200			`if (r->rate == 125)`
201			`r->rate = 124;`
202			`}`
203
204			`static int write_kbd_rate(struct kbd_repeat *rep)`
205			`{`
206			`struct dec_serial* info = lk201kbd_info;`
207			`int delay, rate;`
208			`int i;`
209
210			`delay = rep->delay / 5;`
211			`rate = rep->rate;`
212			`for (i = 0; i < 4; i++) {`
213			`if (info->hook->poll_tx_char(info, LK_CMD_RPT_RATE(i)))`
214			`return 1;`
215			`if (info->hook->poll_tx_char(info, LK_PARAM_DELAY(delay)))`
216			`return 1;`
217			`if (info->hook->poll_tx_char(info, LK_PARAM_RATE(rate)))`
218			`return 1;`
219			`}`
220			`return 0;`
221			`}`
222
223			`static int lk201kbd_rate(struct kbd_repeat *rep)`
224			`{`
225			`if (rep == NULL)`
226			`return -EINVAL;`
227
228			`parse_kbd_rate(rep);`
229
230			`if (write_kbd_rate(rep)) {`
231			`memcpy(rep, &kbdrate, sizeof(struct kbd_repeat));`
232			`return -EIO;`
233			`}`
234
235			`memcpy(&kbdrate, rep, sizeof(struct kbd_repeat));`
236
237			`return 0;`
238			`}`
239
240			`static void lk201kd_mksound(unsigned int hz, unsigned int ticks)`
241			`{`
242			`struct dec_serial* info = lk201kbd_info;`
243
244			`if (!ticks)`
245			`return;`
246
247			`/*`
248			`* Can't set frequency and we "approximate"`
249			`* duration by volume. ;-)`
250			`*/`
251			`ticks /= HZ / 32;`
252			`if (ticks > 7)`
253			`ticks = 7;`
254			`ticks = 7 - ticks;`
255
256			`if (info->hook->poll_tx_char(info, LK_CMD_ENB_BELL))`
257			`return;`
258			`if (info->hook->poll_tx_char(info, LK_PARAM_VOLUME(ticks)))`
259			`return;`
260			`if (info->hook->poll_tx_char(info, LK_CMD_BELL))`
261			`return;`
262			`}`
263
264			`void kbd_leds(unsigned char leds)`
265			`{`
266			`struct dec_serial* info = lk201kbd_info;`
267			`unsigned char l = 0;`
268
269			`if (!info) /* FIXME */`
270			`return;`
271
272			`/* FIXME -- Only Hold and Lock LEDs for now. --macro */`
273			`if (leds & LED_SCR)`
274			`l \|= LK_LED_HOLD;`
275			`if (leds & LED_CAP)`
276			`l \|= LK_LED_LOCK;`
277
278			`if (info->hook->poll_tx_char(info, LK_CMD_LEDS_ON))`
279			`return;`
280			`if (info->hook->poll_tx_char(info, LK_PARAM_LED_MASK(l)))`
281			`return;`
282			`if (info->hook->poll_tx_char(info, LK_CMD_LEDS_OFF))`
283			`return;`
284			`if (info->hook->poll_tx_char(info, LK_PARAM_LED_MASK(~l)))`
285			`return;`
286			`}`
287
288			`int kbd_setkeycode(unsigned int scancode, unsigned int keycode)`
289			`{`
290			`return -EINVAL;`
291			`}`
292
293			`int kbd_getkeycode(unsigned int scancode)`
294			`{`
295			`return -EINVAL;`
296			`}`
297
298			`int kbd_translate(unsigned char scancode, unsigned char *keycode,`
299			`char raw_mode)`
300			`{`
301			`*keycode = scancode;`
302			`return 1;`
303			`}`
304
305			`char kbd_unexpected_up(unsigned char keycode)`
306			`{`
307			`return 0x80;`
308			`}`
309
310			`static void lk201_kbd_rx_char(unsigned char ch, unsigned char stat)`
311			`{`
312			`static unsigned char id[6];`
313			`static int id_i;`
314
315			`static int shift_state = 0;`
316			`static int prev_scancode;`
317			`unsigned char c = scancodeRemap[ch];`
318
319			`if (stat && stat != TTY_OVERRUN) {`
320			`printk(KERN_ERR "lk201: keyboard receive error: 0x%02x\n",`
321			`stat);`
322			`return;`
323			`}`
324
325			`/* Assume this is a power-up ID. */`
326			`if (ch == LK_STAT_PWRUP_ID && !id_i) {`
327			`id[id_i++] = ch;`
328			`return;`
329			`}`
330
331			`/* Handle the power-up sequence. */`
332			`if (id_i) {`
333			`id[id_i++] = ch;`
334			`if (id_i == 4) {`
335			`/* OK, the power-up concluded. */`
336			`lk201_report(id);`
337			`if (id[2] == LK_STAT_PWRUP_OK)`
338			`lk201_get_id(lk201kbd_info);`
339			`else {`
340			`id_i = 0;`
341			`printk(KERN_ERR "lk201: keyboard power-up "`
342			`"error, skipping initialization\n");`
343			`}`
344			`} else if (id_i == 6) {`
345			`/* We got the ID; report it and start operation. */`
346			`id_i = 0;`
347			`lk201_id(id);`
348			`lk201_reset(lk201kbd_info);`
349			`}`
350			`return;`
351			`}`
352
353			`/* Everything else is a scancode/status response. */`
354			`id_i = 0;`
355			`switch (ch) {`
356			`case LK_STAT_RESUME_ERR:`
357			`case LK_STAT_ERROR:`
358			`case LK_STAT_INHIBIT_ACK:`
359			`case LK_STAT_TEST_ACK:`
360			`case LK_STAT_MODE_KEYDOWN:`
361			`case LK_STAT_MODE_ACK:`
362			`break;`
363			`case LK_KEY_LOCK:`
364			`shift_state ^= LK_LOCK;`
365			`handle_scancode(c, (shift_state & LK_LOCK) ? 1 : 0);`
366			`break;`
367			`case LK_KEY_SHIFT:`
368			`shift_state ^= LK_SHIFT;`
369			`handle_scancode(c, (shift_state & LK_SHIFT) ? 1 : 0);`
370			`break;`
371			`case LK_KEY_CTRL:`
372			`shift_state ^= LK_CTRL;`
373			`handle_scancode(c, (shift_state & LK_CTRL) ? 1 : 0);`
374			`break;`
375			`case LK_KEY_COMP:`
376			`shift_state ^= LK_COMP;`
377			`handle_scancode(c, (shift_state & LK_COMP) ? 1 : 0);`
378			`break;`
379			`case LK_KEY_RELEASE:`
380			`if (shift_state & LK_SHIFT)`
381			`handle_scancode(scancodeRemap[LK_KEY_SHIFT], 0);`
382			`if (shift_state & LK_CTRL)`
383			`handle_scancode(scancodeRemap[LK_KEY_CTRL], 0);`
384			`if (shift_state & LK_COMP)`
385			`handle_scancode(scancodeRemap[LK_KEY_COMP], 0);`
386			`if (shift_state & LK_LOCK)`
387			`handle_scancode(scancodeRemap[LK_KEY_LOCK], 0);`
388			`shift_state = 0;`
389			`break;`
390			`case LK_KEY_REPEAT:`
391			`handle_scancode(prev_scancode, 1);`
392			`break;`
393			`default:`
394			`prev_scancode = c;`
395			`handle_scancode(c, 1);`
396			`break;`
397			`}`
398			`tasklet_schedule(&keyboard_tasklet);`
399			`}`
400
401			`static void __init lk201_info(struct dec_serial *info)`
402			`{`
403			`}`
404
405			`static int __init lk201_init(struct dec_serial *info)`
406			`{`
407			`/* First install handlers. */`
408			`lk201kbd_info = info;`
409			`kbd_rate = lk201kbd_rate;`
410			`kd_mksound = lk201kd_mksound;`
411
412			`info->hook->rx_char = lk201_kbd_rx_char;`
413
414			`/* Then just issue a reset -- the handlers will do the rest. */`
415			`lk201_send(info, LK_CMD_POWER_UP);`
416
417			`return 0;`
418			`}`
419
420			`void __init kbd_init_hw(void)`
421			`{`
422			`extern int register_zs_hook(unsigned int, struct zs_hook *);`
423			`extern int unregister_zs_hook(unsigned int);`
424
425			`/* Maxine uses LK501 at the Access.Bus. */`
426			`if (!LK_IFACE)`
427			`return;`
428
429			`printk(KERN_INFO "lk201: DECstation LK keyboard driver v0.05.\n");`
430
431			`if (LK_IFACE_ZS) {`
432			`/*`
433			`* kbd_init_hw() is being called before`
434			`* rs_init() so just register the kbd hook`
435			`* and let zs_init do the rest :-)`
436			`*/`
437			`if(!register_zs_hook(KEYB_LINE, &lk201_kbdhook))`
438			`unregister_zs_hook(KEYB_LINE);`
439			`} else {`
440			`/*`
441			`* TODO: modify dz.c to allow similar hooks`
442			`* for LK201 handling on DS2100, DS3100, and DS5000/200`
443			`*/`
444			`printk(KERN_ERR "lk201: support for DZ11 not yet ready.\n");`
445			`}`
446			`}`