Revision bc24a225 hw/max7310.c
| b/hw/max7310.c | ||
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#include "hw.h" |
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#include "i2c.h" |
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struct max7310_s {
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typedef struct {
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i2c_slave i2c; |
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int i2c_command_byte; |
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int len; |
| ... | ... | |
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uint8_t command; |
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qemu_irq handler[8]; |
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qemu_irq *gpio_in; |
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}; |
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} MAX7310State;
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void max7310_reset(i2c_slave *i2c) |
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{
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struct max7310_s *s = (struct max7310_s *) i2c;
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MAX7310State *s = (MAX7310State *) i2c;
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s->level &= s->direction; |
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s->direction = 0xff; |
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s->polarity = 0xf0; |
| ... | ... | |
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static int max7310_rx(i2c_slave *i2c) |
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{
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struct max7310_s *s = (struct max7310_s *) i2c;
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MAX7310State *s = (MAX7310State *) i2c;
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switch (s->command) {
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case 0x00: /* Input port */ |
| ... | ... | |
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static int max7310_tx(i2c_slave *i2c, uint8_t data) |
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{
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struct max7310_s *s = (struct max7310_s *) i2c;
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MAX7310State *s = (MAX7310State *) i2c;
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uint8_t diff; |
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int line; |
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|
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static void max7310_event(i2c_slave *i2c, enum i2c_event event) |
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{
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struct max7310_s *s = (struct max7310_s *) i2c;
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MAX7310State *s = (MAX7310State *) i2c;
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s->len = 0; |
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switch (event) {
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| ... | ... | |
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static void max7310_save(QEMUFile *f, void *opaque) |
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{
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struct max7310_s *s = (struct max7310_s *) opaque;
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MAX7310State *s = (MAX7310State *) opaque;
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qemu_put_be32(f, s->i2c_command_byte); |
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qemu_put_be32(f, s->len); |
| ... | ... | |
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static int max7310_load(QEMUFile *f, void *opaque, int version_id) |
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{
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struct max7310_s *s = (struct max7310_s *) opaque;
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MAX7310State *s = (MAX7310State *) opaque;
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s->i2c_command_byte = qemu_get_be32(f); |
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s->len = qemu_get_be32(f); |
| ... | ... | |
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static void max7310_gpio_set(void *opaque, int line, int level) |
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{
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struct max7310_s *s = (struct max7310_s *) opaque;
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MAX7310State *s = (MAX7310State *) opaque;
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if (line >= ARRAY_SIZE(s->handler) || line < 0) |
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hw_error("bad GPIO line");
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/* MAX7310 is SMBus-compatible (can be used with only SMBus protocols), |
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* but also accepts sequences that are not SMBus so return an I2C device. */ |
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struct i2c_slave *max7310_init(i2c_bus *bus)
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i2c_slave *max7310_init(i2c_bus *bus) |
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{
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struct max7310_s *s = (struct max7310_s *)
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i2c_slave_init(bus, 0, sizeof(struct max7310_s));
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MAX7310State *s = (MAX7310State *)
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i2c_slave_init(bus, 0, sizeof(MAX7310State));
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s->i2c.event = max7310_event; |
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s->i2c.recv = max7310_rx; |
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s->i2c.send = max7310_tx; |
| ... | ... | |
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qemu_irq *max7310_gpio_in_get(i2c_slave *i2c) |
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{
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struct max7310_s *s = (struct max7310_s *) i2c;
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MAX7310State *s = (MAX7310State *) i2c;
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return s->gpio_in; |
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} |
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void max7310_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler) |
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{
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struct max7310_s *s = (struct max7310_s *) i2c;
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MAX7310State *s = (MAX7310State *) i2c;
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if (line >= ARRAY_SIZE(s->handler) || line < 0) |
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hw_error("bad GPIO line");
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