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-rw-r--r--hw/pxa2xx_keypad.c344
1 files changed, 344 insertions, 0 deletions
diff --git a/hw/pxa2xx_keypad.c b/hw/pxa2xx_keypad.c
new file mode 100644
index 0000000000..3bd988a21b
--- /dev/null
+++ b/hw/pxa2xx_keypad.c
@@ -0,0 +1,344 @@
+/*
+ * 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 pxa2xx_keypad_s{
+ target_phys_addr_t base;
+ 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 (struct pxa2xx_keypad_s *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)
+{
+ struct pxa2xx_keypad_s *s = (struct pxa2xx_keypad_s *) opaque;
+ uint32_t tmp;
+ offset -= s->base;
+
+ 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:
+ cpu_abort(cpu_single_env, "%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)
+{
+ struct pxa2xx_keypad_s *s = (struct pxa2xx_keypad_s *) opaque;
+ offset -= s->base;
+
+ 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:
+ cpu_abort(cpu_single_env, "%s: Bad offset " REG_FMT "\n",
+ __FUNCTION__, offset);
+ }
+}
+
+static CPUReadMemoryFunc *pxa2xx_keypad_readfn[] = {
+ pxa2xx_keypad_read,
+ pxa2xx_keypad_read,
+ pxa2xx_keypad_read
+};
+
+static CPUWriteMemoryFunc *pxa2xx_keypad_writefn[] = {
+ pxa2xx_keypad_write,
+ pxa2xx_keypad_write,
+ pxa2xx_keypad_write
+};
+
+static void pxa2xx_keypad_save(QEMUFile *f, void *opaque)
+{
+ struct pxa2xx_keypad_s *s = (struct pxa2xx_keypad_s *) 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)
+{
+ struct pxa2xx_keypad_s *s = (struct pxa2xx_keypad_s *) 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;
+}
+
+struct pxa2xx_keypad_s *pxa27x_keypad_init(target_phys_addr_t base,
+ qemu_irq irq)
+{
+ int iomemtype;
+ struct pxa2xx_keypad_s *s;
+
+ s = (struct pxa2xx_keypad_s *) qemu_mallocz(sizeof(struct pxa2xx_keypad_s));
+ s->base = base;
+ s->irq = irq;
+
+ iomemtype = cpu_register_io_memory(0, pxa2xx_keypad_readfn,
+ pxa2xx_keypad_writefn, s);
+ cpu_register_physical_memory(base, 0x00100000, iomemtype);////check size
+
+ register_savevm("pxa2xx_keypad", 0, 0,
+ pxa2xx_keypad_save, pxa2xx_keypad_load, s);
+
+ return s;
+}
+
+void pxa27x_register_keypad(struct pxa2xx_keypad_s *kp, struct keymap *map,
+ int size)
+{
+ kp->map = (struct keymap *) qemu_mallocz(sizeof(struct keymap) * size);
+
+ if(!map || size < 80) {
+ 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);
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-11 13:47:20 +0000