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Diffstat (limited to 'qemu/hw/gpio/max7310.c')
-rw-r--r--qemu/hw/gpio/max7310.c218
1 files changed, 0 insertions, 218 deletions
diff --git a/qemu/hw/gpio/max7310.c b/qemu/hw/gpio/max7310.c
deleted file mode 100644
index 1bd5eaf91..000000000
--- a/qemu/hw/gpio/max7310.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * MAX7310 8-port GPIO expansion chip.
- *
- * Copyright (c) 2006 Openedhand Ltd.
- * Written by Andrzej Zaborowski <balrog@zabor.org>
- *
- * This file is licensed under GNU GPL.
- */
-
-#include "qemu/osdep.h"
-#include "hw/i2c/i2c.h"
-
-#define TYPE_MAX7310 "max7310"
-#define MAX7310(obj) OBJECT_CHECK(MAX7310State, (obj), TYPE_MAX7310)
-
-typedef struct MAX7310State {
- I2CSlave parent_obj;
-
- int i2c_command_byte;
- int len;
-
- uint8_t level;
- uint8_t direction;
- uint8_t polarity;
- uint8_t status;
- uint8_t command;
- qemu_irq handler[8];
- qemu_irq *gpio_in;
-} MAX7310State;
-
-static void max7310_reset(DeviceState *dev)
-{
- MAX7310State *s = MAX7310(dev);
-
- s->level &= s->direction;
- s->direction = 0xff;
- s->polarity = 0xf0;
- s->status = 0x01;
- s->command = 0x00;
-}
-
-static int max7310_rx(I2CSlave *i2c)
-{
- MAX7310State *s = MAX7310(i2c);
-
- switch (s->command) {
- case 0x00: /* Input port */
- return s->level ^ s->polarity;
- break;
-
- case 0x01: /* Output port */
- return s->level & ~s->direction;
- break;
-
- case 0x02: /* Polarity inversion */
- return s->polarity;
-
- case 0x03: /* Configuration */
- return s->direction;
-
- case 0x04: /* Timeout */
- return s->status;
- break;
-
- case 0xff: /* Reserved */
- return 0xff;
-
- default:
-#ifdef VERBOSE
- printf("%s: unknown register %02x\n", __FUNCTION__, s->command);
-#endif
- break;
- }
- return 0xff;
-}
-
-static int max7310_tx(I2CSlave *i2c, uint8_t data)
-{
- MAX7310State *s = MAX7310(i2c);
- uint8_t diff;
- int line;
-
- if (s->len ++ > 1) {
-#ifdef VERBOSE
- printf("%s: message too long (%i bytes)\n", __FUNCTION__, s->len);
-#endif
- return 1;
- }
-
- if (s->i2c_command_byte) {
- s->command = data;
- s->i2c_command_byte = 0;
- return 0;
- }
-
- switch (s->command) {
- case 0x01: /* Output port */
- for (diff = (data ^ s->level) & ~s->direction; diff;
- diff &= ~(1 << line)) {
- line = ctz32(diff);
- if (s->handler[line])
- qemu_set_irq(s->handler[line], (data >> line) & 1);
- }
- s->level = (s->level & s->direction) | (data & ~s->direction);
- break;
-
- case 0x02: /* Polarity inversion */
- s->polarity = data;
- break;
-
- case 0x03: /* Configuration */
- s->level &= ~(s->direction ^ data);
- s->direction = data;
- break;
-
- case 0x04: /* Timeout */
- s->status = data;
- break;
-
- case 0x00: /* Input port - ignore writes */
- break;
- default:
-#ifdef VERBOSE
- printf("%s: unknown register %02x\n", __FUNCTION__, s->command);
-#endif
- return 1;
- }
-
- return 0;
-}
-
-static void max7310_event(I2CSlave *i2c, enum i2c_event event)
-{
- MAX7310State *s = MAX7310(i2c);
- s->len = 0;
-
- switch (event) {
- case I2C_START_SEND:
- s->i2c_command_byte = 1;
- break;
- case I2C_FINISH:
-#ifdef VERBOSE
- if (s->len == 1)
- printf("%s: message too short (%i bytes)\n", __FUNCTION__, s->len);
-#endif
- break;
- default:
- break;
- }
-}
-
-static const VMStateDescription vmstate_max7310 = {
- .name = "max7310",
- .version_id = 0,
- .minimum_version_id = 0,
- .fields = (VMStateField[]) {
- VMSTATE_INT32(i2c_command_byte, MAX7310State),
- VMSTATE_INT32(len, MAX7310State),
- VMSTATE_UINT8(level, MAX7310State),
- VMSTATE_UINT8(direction, MAX7310State),
- VMSTATE_UINT8(polarity, MAX7310State),
- VMSTATE_UINT8(status, MAX7310State),
- VMSTATE_UINT8(command, MAX7310State),
- VMSTATE_I2C_SLAVE(parent_obj, MAX7310State),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void max7310_gpio_set(void *opaque, int line, int level)
-{
- MAX7310State *s = (MAX7310State *) opaque;
- if (line >= ARRAY_SIZE(s->handler) || line < 0)
- hw_error("bad GPIO line");
-
- if (level)
- s->level |= s->direction & (1 << line);
- else
- s->level &= ~(s->direction & (1 << line));
-}
-
-/* MAX7310 is SMBus-compatible (can be used with only SMBus protocols),
- * but also accepts sequences that are not SMBus so return an I2C device. */
-static int max7310_init(I2CSlave *i2c)
-{
- MAX7310State *s = MAX7310(i2c);
-
- qdev_init_gpio_in(&i2c->qdev, max7310_gpio_set, 8);
- qdev_init_gpio_out(&i2c->qdev, s->handler, 8);
-
- return 0;
-}
-
-static void max7310_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
-
- k->init = max7310_init;
- k->event = max7310_event;
- k->recv = max7310_rx;
- k->send = max7310_tx;
- dc->reset = max7310_reset;
- dc->vmsd = &vmstate_max7310;
-}
-
-static const TypeInfo max7310_info = {
- .name = TYPE_MAX7310,
- .parent = TYPE_I2C_SLAVE,
- .instance_size = sizeof(MAX7310State),
- .class_init = max7310_class_init,
-};
-
-static void max7310_register_types(void)
-{
- type_register_static(&max7310_info);
-}
-
-type_init(max7310_register_types)