Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

file 336 lines (299 sloc) 9.576 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336
/*
* Intel PXA27X Keypad Controller emulation.
*
* Copyright (c) 2007 MontaVista Software, Inc
* Written by Armin Kuster <akuster@kama-aina.net>
* or <Akuster@mvista.com>
*
* This code is licensed under the GPLv2.
*/

#include "hw.h"
#include "pxa.h"
#include "console.h"

/*
* Keypad
*/
#define KPC 0x00 /* Keypad Interface Control register */
#define KPDK 0x08 /* Keypad Interface Direct Key register */
#define KPREC 0x10 /* Keypad Interface Rotary Encoder register */
#define KPMK 0x18 /* Keypad Interface Matrix Key register */
#define KPAS 0x20 /* Keypad Interface Automatic Scan register */
#define KPASMKP0 0x28 /* Keypad Interface Automatic Scan Multiple
Key Presser register 0 */
#define KPASMKP1 0x30 /* Keypad Interface Automatic Scan Multiple
Key Presser register 1 */
#define KPASMKP2 0x38 /* Keypad Interface Automatic Scan Multiple
Key Presser register 2 */
#define KPASMKP3 0x40 /* Keypad Interface Automatic Scan Multiple
Key Presser register 3 */
#define KPKDI 0x48 /* Keypad Interface Key Debounce Interval
register */

/* Keypad defines */
#define KPC_AS (0x1 << 30) /* Automatic Scan bit */
#define KPC_ASACT (0x1 << 29) /* Automatic Scan on Activity */
#define KPC_MI (0x1 << 22) /* Matrix interrupt bit */
#define KPC_IMKP (0x1 << 21) /* Ignore Multiple Key Press */
#define KPC_MS7 (0x1 << 20) /* Matrix scan line 7 */
#define KPC_MS6 (0x1 << 19) /* Matrix scan line 6 */
#define KPC_MS5 (0x1 << 18) /* Matrix scan line 5 */
#define KPC_MS4 (0x1 << 17) /* Matrix scan line 4 */
#define KPC_MS3 (0x1 << 16) /* Matrix scan line 3 */
#define KPC_MS2 (0x1 << 15) /* Matrix scan line 2 */
#define KPC_MS1 (0x1 << 14) /* Matrix scan line 1 */
#define KPC_MS0 (0x1 << 13) /* Matrix scan line 0 */
#define KPC_ME (0x1 << 12) /* Matrix Keypad Enable */
#define KPC_MIE (0x1 << 11) /* Matrix Interrupt Enable */
#define KPC_DK_DEB_SEL (0x1 << 9) /* Direct Keypad Debounce Select */
#define KPC_DI (0x1 << 5) /* Direct key interrupt bit */
#define KPC_RE_ZERO_DEB (0x1 << 4) /* Rotary Encoder Zero Debounce */
#define KPC_REE1 (0x1 << 3) /* Rotary Encoder1 Enable */
#define KPC_REE0 (0x1 << 2) /* Rotary Encoder0 Enable */
#define KPC_DE (0x1 << 1) /* Direct Keypad Enable */
#define KPC_DIE (0x1 << 0) /* Direct Keypad interrupt Enable */

#define KPDK_DKP (0x1 << 31)
#define KPDK_DK7 (0x1 << 7)
#define KPDK_DK6 (0x1 << 6)
#define KPDK_DK5 (0x1 << 5)
#define KPDK_DK4 (0x1 << 4)
#define KPDK_DK3 (0x1 << 3)
#define KPDK_DK2 (0x1 << 2)
#define KPDK_DK1 (0x1 << 1)
#define KPDK_DK0 (0x1 << 0)

#define KPREC_OF1 (0x1 << 31)
#define KPREC_UF1 (0x1 << 30)
#define KPREC_OF0 (0x1 << 15)
#define KPREC_UF0 (0x1 << 14)

#define KPMK_MKP (0x1 << 31)
#define KPAS_SO (0x1 << 31)
#define KPASMKPx_SO (0x1 << 31)


#define KPASMKPx_MKC(row, col) (1 << (row + 16 * (col % 2)))

#define PXAKBD_MAXROW 8
#define PXAKBD_MAXCOL 8

struct PXA2xxKeyPadState {
    qemu_irq irq;
    struct keymap *map;

    uint32_t kpc;
    uint32_t kpdk;
    uint32_t kprec;
    uint32_t kpmk;
    uint32_t kpas;
    uint32_t kpasmkp0;
    uint32_t kpasmkp1;
    uint32_t kpasmkp2;
    uint32_t kpasmkp3;
    uint32_t kpkdi;
};

static void pxa27x_keyboard_event (PXA2xxKeyPadState *kp, int keycode)
{
    int row, col,rel;

    if(!(kp->kpc & KPC_ME)) /* skip if not enabled */
        return;

    if(kp->kpc & KPC_AS || kp->kpc & KPC_ASACT) {
        if(kp->kpc & KPC_AS)
            kp->kpc &= ~(KPC_AS);

        rel = (keycode & 0x80) ? 1 : 0; /* key release from qemu */
        keycode &= ~(0x80); /* strip qemu key release bit */
        row = kp->map[keycode].row;
        col = kp->map[keycode].column;
        if(row == -1 || col == -1)
            return;
        switch (col) {
        case 0:
        case 1:
            if(rel)
                kp->kpasmkp0 = ~(0xffffffff);
            else
                kp->kpasmkp0 |= KPASMKPx_MKC(row,col);
            break;
        case 2:
        case 3:
            if(rel)
                kp->kpasmkp1 = ~(0xffffffff);
            else
                kp->kpasmkp1 |= KPASMKPx_MKC(row,col);
            break;
        case 4:
        case 5:
            if(rel)
                kp->kpasmkp2 = ~(0xffffffff);
            else
                kp->kpasmkp2 |= KPASMKPx_MKC(row,col);
            break;
        case 6:
        case 7:
            if(rel)
                kp->kpasmkp3 = ~(0xffffffff);
            else
                kp->kpasmkp3 |= KPASMKPx_MKC(row,col);
            break;
        } /* switch */
        goto out;
    }
    return;

out:
    if(kp->kpc & KPC_MIE) {
        kp->kpc |= KPC_MI;
        qemu_irq_raise(kp->irq);
    }
    return;
}

static uint32_t pxa2xx_keypad_read(void *opaque, target_phys_addr_t offset)
{
    PXA2xxKeyPadState *s = (PXA2xxKeyPadState *) opaque;
    uint32_t tmp;

    switch (offset) {
    case KPC:
        tmp = s->kpc;
        if(tmp & KPC_MI)
            s->kpc &= ~(KPC_MI);
        if(tmp & KPC_DI)
            s->kpc &= ~(KPC_DI);
        qemu_irq_lower(s->irq);
        return tmp;
        break;
    case KPDK:
        return s->kpdk;
        break;
    case KPREC:
        tmp = s->kprec;
        if(tmp & KPREC_OF1)
            s->kprec &= ~(KPREC_OF1);
        if(tmp & KPREC_UF1)
            s->kprec &= ~(KPREC_UF1);
        if(tmp & KPREC_OF0)
            s->kprec &= ~(KPREC_OF0);
        if(tmp & KPREC_UF0)
            s->kprec &= ~(KPREC_UF0);
        return tmp;
        break;
    case KPMK:
        tmp = s->kpmk;
        if(tmp & KPMK_MKP)
            s->kpmk &= ~(KPMK_MKP);
        return tmp;
        break;
    case KPAS:
        return s->kpas;
        break;
    case KPASMKP0:
        return s->kpasmkp0;
        break;
    case KPASMKP1:
        return s->kpasmkp1;
        break;
    case KPASMKP2:
        return s->kpasmkp2;
        break;
    case KPASMKP3:
        return s->kpasmkp3;
        break;
    case KPKDI:
        return s->kpkdi;
        break;
    default:
        hw_error("%s: Bad offset " REG_FMT "\n", __FUNCTION__, offset);
    }

    return 0;
}

static void pxa2xx_keypad_write(void *opaque,
                target_phys_addr_t offset, uint32_t value)
{
    PXA2xxKeyPadState *s = (PXA2xxKeyPadState *) opaque;

    switch (offset) {
    case KPC:
        s->kpc = value;
        break;
    case KPDK:
        s->kpdk = value;
        break;
    case KPREC:
        s->kprec = value;
        break;
    case KPMK:
        s->kpmk = value;
        break;
    case KPAS:
        s->kpas = value;
        break;
    case KPASMKP0:
        s->kpasmkp0 = value;
        break;
    case KPASMKP1:
        s->kpasmkp1 = value;
        break;
    case KPASMKP2:
        s->kpasmkp2 = value;
        break;
    case KPASMKP3:
        s->kpasmkp3 = value;
        break;
    case KPKDI:
        s->kpkdi = value;
        break;

    default:
        hw_error("%s: Bad offset " REG_FMT "\n", __FUNCTION__, offset);
    }
}

static CPUReadMemoryFunc * const pxa2xx_keypad_readfn[] = {
    pxa2xx_keypad_read,
    pxa2xx_keypad_read,
    pxa2xx_keypad_read
};

static CPUWriteMemoryFunc * const pxa2xx_keypad_writefn[] = {
    pxa2xx_keypad_write,
    pxa2xx_keypad_write,
    pxa2xx_keypad_write
};

static void pxa2xx_keypad_save(QEMUFile *f, void *opaque)
{
    PXA2xxKeyPadState *s = (PXA2xxKeyPadState *) opaque;

    qemu_put_be32s(f, &s->kpc);
    qemu_put_be32s(f, &s->kpdk);
    qemu_put_be32s(f, &s->kprec);
    qemu_put_be32s(f, &s->kpmk);
    qemu_put_be32s(f, &s->kpas);
    qemu_put_be32s(f, &s->kpasmkp0);
    qemu_put_be32s(f, &s->kpasmkp1);
    qemu_put_be32s(f, &s->kpasmkp2);
    qemu_put_be32s(f, &s->kpasmkp3);
    qemu_put_be32s(f, &s->kpkdi);

}

static int pxa2xx_keypad_load(QEMUFile *f, void *opaque, int version_id)
{
    PXA2xxKeyPadState *s = (PXA2xxKeyPadState *) opaque;

    qemu_get_be32s(f, &s->kpc);
    qemu_get_be32s(f, &s->kpdk);
    qemu_get_be32s(f, &s->kprec);
    qemu_get_be32s(f, &s->kpmk);
    qemu_get_be32s(f, &s->kpas);
    qemu_get_be32s(f, &s->kpasmkp0);
    qemu_get_be32s(f, &s->kpasmkp1);
    qemu_get_be32s(f, &s->kpasmkp2);
    qemu_get_be32s(f, &s->kpasmkp3);
    qemu_get_be32s(f, &s->kpkdi);

    return 0;
}

PXA2xxKeyPadState *pxa27x_keypad_init(target_phys_addr_t base,
        qemu_irq irq)
{
    int iomemtype;
    PXA2xxKeyPadState *s;

    s = (PXA2xxKeyPadState *) qemu_mallocz(sizeof(PXA2xxKeyPadState));
    s->irq = irq;

    iomemtype = cpu_register_io_memory(pxa2xx_keypad_readfn,
                    pxa2xx_keypad_writefn, s, DEVICE_NATIVE_ENDIAN);
    cpu_register_physical_memory(base, 0x00100000, iomemtype);

    register_savevm(NULL, "pxa2xx_keypad", 0, 0,
                    pxa2xx_keypad_save, pxa2xx_keypad_load, s);

    return s;
}

void pxa27x_register_keypad(PXA2xxKeyPadState *kp, struct keymap *map,
        int size)
{
    if(!map || size < 0x80) {
        fprintf(stderr, "%s - No PXA keypad map defined\n", __FUNCTION__);
        exit(-1);
    }

    kp->map = map;
    qemu_add_kbd_event_handler((QEMUPutKBDEvent *) pxa27x_keyboard_event, kp);
}
Something went wrong with that request. Please try again.