pxa2xx_keypad: enhance emulation of KPAS, KPASMKP regs
Add emulation of KPAS register and proper emulation of KPASMKP regs, so now driver supports multipresses and properly works with Linux driver. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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@ -82,22 +82,39 @@
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struct PXA2xxKeyPadState {
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qemu_irq irq;
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struct keymap *map;
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int pressed_cnt;
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uint32_t kpc;
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uint32_t kpdk;
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uint32_t kprec;
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uint32_t kpmk;
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uint32_t kpas;
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uint32_t kpasmkp0;
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uint32_t kpasmkp1;
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uint32_t kpasmkp2;
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uint32_t kpasmkp3;
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uint32_t kpasmkp[4];
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uint32_t kpkdi;
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};
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static void pxa27x_keypad_find_pressed_key(PXA2xxKeyPadState *kp, int *row, int *col)
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{
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int i;
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for (i = 0; i < 4; i++)
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{
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*col = i * 2;
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for (*row = 0; *row < 8; (*row)++) {
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if (kp->kpasmkp[i] & (1 << *row))
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return;
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}
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*col = i * 2 + 1;
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for (*row = 0; *row < 8; (*row)++) {
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if (kp->kpasmkp[i] & (1 << (*row + 16)))
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return;
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}
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}
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}
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static void pxa27x_keyboard_event (PXA2xxKeyPadState *kp, int keycode)
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{
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int row, col,rel;
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int row, col, rel, assert_irq = 0;
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uint32_t val;
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if(!(kp->kpc & KPC_ME)) /* skip if not enabled */
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return;
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@ -108,46 +125,39 @@ static void pxa27x_keyboard_event (PXA2xxKeyPadState *kp, int keycode)
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rel = (keycode & 0x80) ? 1 : 0; /* key release from qemu */
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keycode &= ~(0x80); /* strip qemu key release bit */
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row = kp->map[keycode].row;
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col = kp->map[keycode].column;
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if(row == -1 || col == -1)
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return;
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switch (col) {
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case 0:
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case 1:
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if(rel)
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kp->kpasmkp0 = ~(0xffffffff);
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else
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kp->kpasmkp0 |= KPASMKPx_MKC(row,col);
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break;
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case 2:
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case 3:
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if(rel)
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kp->kpasmkp1 = ~(0xffffffff);
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else
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kp->kpasmkp1 |= KPASMKPx_MKC(row,col);
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break;
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case 4:
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case 5:
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if(rel)
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kp->kpasmkp2 = ~(0xffffffff);
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else
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kp->kpasmkp2 |= KPASMKPx_MKC(row,col);
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break;
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case 6:
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case 7:
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if(rel)
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kp->kpasmkp3 = ~(0xffffffff);
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else
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kp->kpasmkp3 |= KPASMKPx_MKC(row,col);
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break;
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} /* switch */
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val = KPASMKPx_MKC(row, col);
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if (rel) {
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if (kp->kpasmkp[col / 2] & val) {
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kp->kpasmkp[col / 2] &= ~val;
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kp->pressed_cnt--;
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assert_irq = 1;
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}
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} else {
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if (!(kp->kpasmkp[col / 2] & val)) {
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kp->kpasmkp[col / 2] |= val;
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kp->pressed_cnt++;
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assert_irq = 1;
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}
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}
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kp->kpas = ((kp->pressed_cnt & 0x1f) << 26) | (0xf << 4) | 0xf;
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if (kp->pressed_cnt == 1) {
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kp->kpas &= ~((0xf << 4) | 0xf);
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if (rel)
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pxa27x_keypad_find_pressed_key(kp, &row, &col);
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kp->kpas |= ((row & 0xf) << 4) | (col & 0xf);
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}
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goto out;
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}
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return;
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out:
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if(kp->kpc & KPC_MIE) {
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if (assert_irq && (kp->kpc & KPC_MIE)) {
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kp->kpc |= KPC_MI;
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qemu_irq_raise(kp->irq);
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}
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@ -194,16 +204,16 @@ static uint32_t pxa2xx_keypad_read(void *opaque, target_phys_addr_t offset)
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return s->kpas;
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break;
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case KPASMKP0:
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return s->kpasmkp0;
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return s->kpasmkp[0];
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break;
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case KPASMKP1:
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return s->kpasmkp1;
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return s->kpasmkp[1];
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break;
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case KPASMKP2:
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return s->kpasmkp2;
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return s->kpasmkp[2];
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break;
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case KPASMKP3:
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return s->kpasmkp3;
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return s->kpasmkp[3];
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break;
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case KPKDI:
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return s->kpkdi;
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@ -237,16 +247,16 @@ static void pxa2xx_keypad_write(void *opaque,
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s->kpas = value;
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break;
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case KPASMKP0:
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s->kpasmkp0 = value;
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s->kpasmkp[0] = value;
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break;
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case KPASMKP1:
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s->kpasmkp1 = value;
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s->kpasmkp[1] = value;
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break;
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case KPASMKP2:
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s->kpasmkp2 = value;
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s->kpasmkp[2] = value;
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break;
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case KPASMKP3:
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s->kpasmkp3 = value;
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s->kpasmkp[3] = value;
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break;
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case KPKDI:
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s->kpkdi = value;
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@ -278,10 +288,10 @@ static void pxa2xx_keypad_save(QEMUFile *f, void *opaque)
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qemu_put_be32s(f, &s->kprec);
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qemu_put_be32s(f, &s->kpmk);
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qemu_put_be32s(f, &s->kpas);
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qemu_put_be32s(f, &s->kpasmkp0);
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qemu_put_be32s(f, &s->kpasmkp1);
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qemu_put_be32s(f, &s->kpasmkp2);
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qemu_put_be32s(f, &s->kpasmkp3);
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qemu_put_be32s(f, &s->kpasmkp[0]);
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qemu_put_be32s(f, &s->kpasmkp[1]);
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qemu_put_be32s(f, &s->kpasmkp[2]);
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qemu_put_be32s(f, &s->kpasmkp[3]);
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qemu_put_be32s(f, &s->kpkdi);
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}
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@ -295,10 +305,10 @@ static int pxa2xx_keypad_load(QEMUFile *f, void *opaque, int version_id)
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qemu_get_be32s(f, &s->kprec);
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qemu_get_be32s(f, &s->kpmk);
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qemu_get_be32s(f, &s->kpas);
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qemu_get_be32s(f, &s->kpasmkp0);
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qemu_get_be32s(f, &s->kpasmkp1);
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qemu_get_be32s(f, &s->kpasmkp2);
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qemu_get_be32s(f, &s->kpasmkp3);
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qemu_get_be32s(f, &s->kpasmkp[0]);
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qemu_get_be32s(f, &s->kpasmkp[1]);
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qemu_get_be32s(f, &s->kpasmkp[2]);
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qemu_get_be32s(f, &s->kpasmkp[3]);
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qemu_get_be32s(f, &s->kpkdi);
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return 0;
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