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tmp105: QOM'ify 

Introduce TYPE_ constant and cast macro.
Move the state struct to the new header to allow for future embedding.

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Andreas Färber 2013-01-16 01:57:58 +01:00 committed by Anthony Liguori
parent 6e9989034b
commit 2aad80eeb7
2 changed files with 39 additions and 24 deletions
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36
hw/tmp105.c
View File

@ -22,20 +22,6 @@
#include "i2c.h" #include "i2c.h"
#include "tmp105.h" #include "tmp105.h"
typedef struct {
I2CSlave i2c;
uint8_t len;
uint8_t buf[2];
qemu_irq pin;
uint8_t pointer;
uint8_t config;
int16_t temperature;
int16_t limit[2];
int faults;
uint8_t alarm;
} TMP105State;
static void tmp105_interrupt_update(TMP105State *s) static void tmp105_interrupt_update(TMP105State *s)
{ {
qemu_set_irq(s->pin, s->alarm ^ ((~s->config >> 2) & 1)); /* POL */ qemu_set_irq(s->pin, s->alarm ^ ((~s->config >> 2) & 1)); /* POL */
@ -68,7 +54,7 @@ static void tmp105_alarm_update(TMP105State *s)
/* Units are 0.001 centigrades relative to 0 C. */ /* Units are 0.001 centigrades relative to 0 C. */
void tmp105_set(I2CSlave *i2c, int temp) void tmp105_set(I2CSlave *i2c, int temp)
{ {
TMP105State *s = (TMP105State *) i2c; TMP105State *s = TMP105(i2c);
if (temp >= 128000 || temp < -128000) { if (temp >= 128000 || temp < -128000) {
fprintf(stderr, "%s: values is out of range (%i.%03i C)\n", fprintf(stderr, "%s: values is out of range (%i.%03i C)\n",
@ -141,17 +127,18 @@ static void tmp105_write(TMP105State *s)
static int tmp105_rx(I2CSlave *i2c) static int tmp105_rx(I2CSlave *i2c)
{ {
TMP105State *s = (TMP105State *) i2c; TMP105State *s = TMP105(i2c);
if (s->len < 2) if (s->len < 2) {
return s->buf[s->len ++]; return s->buf[s->len ++];
else } else {
return 0xff; return 0xff;
}
} }
static int tmp105_tx(I2CSlave *i2c, uint8_t data) static int tmp105_tx(I2CSlave *i2c, uint8_t data)
{ {
TMP105State *s = (TMP105State *) i2c; TMP105State *s = TMP105(i2c);
if (s->len == 0) { if (s->len == 0) {
s->pointer = data; s->pointer = data;
@ -169,10 +156,11 @@ static int tmp105_tx(I2CSlave *i2c, uint8_t data)
static void tmp105_event(I2CSlave *i2c, enum i2c_event event) static void tmp105_event(I2CSlave *i2c, enum i2c_event event)
{ {
TMP105State *s = (TMP105State *) i2c; TMP105State *s = TMP105(i2c);
if (event == I2C_START_RECV) if (event == I2C_START_RECV) {
tmp105_read(s); tmp105_read(s);
}
s->len = 0; s->len = 0;
} }
@ -208,7 +196,7 @@ static const VMStateDescription vmstate_tmp105 = {
static void tmp105_reset(I2CSlave *i2c) static void tmp105_reset(I2CSlave *i2c)
{ {
TMP105State *s = (TMP105State *) i2c; TMP105State *s = TMP105(i2c);
s->temperature = 0; s->temperature = 0;
s->pointer = 0; s->pointer = 0;
@ -221,7 +209,7 @@ static void tmp105_reset(I2CSlave *i2c)
static int tmp105_init(I2CSlave *i2c) static int tmp105_init(I2CSlave *i2c)
{ {
TMP105State *s = FROM_I2C_SLAVE(TMP105State, i2c); TMP105State *s = TMP105(i2c);
qdev_init_gpio_out(&i2c->qdev, &s->pin, 1); qdev_init_gpio_out(&i2c->qdev, &s->pin, 1);
@ -243,7 +231,7 @@ static void tmp105_class_init(ObjectClass *klass, void *data)
} }
static const TypeInfo tmp105_info = { static const TypeInfo tmp105_info = {
.name = "tmp105", .name = TYPE_TMP105,
.parent = TYPE_I2C_SLAVE, .parent = TYPE_I2C_SLAVE,
.instance_size = sizeof(TMP105State), .instance_size = sizeof(TMP105State),
.class_init = tmp105_class_init, .class_init = tmp105_class_init,

27
hw/tmp105.h
View File

@ -17,6 +17,33 @@
#include "i2c.h" #include "i2c.h"
#include "tmp105_regs.h" #include "tmp105_regs.h"
#define TYPE_TMP105 "tmp105"
#define TMP105(obj) OBJECT_CHECK(TMP105State, (obj), TYPE_TMP105)
/**
* TMP105State:
* @config: Bits 5 and 6 (value 32 and 64) determine the precision of the
* temperature. See Table 8 in the data sheet.
*
* @see_also: http://www.ti.com/lit/gpn/tmp105
*/
typedef struct TMP105State {
/*< private >*/
I2CSlave i2c;
/*< public >*/
uint8_t len;
uint8_t buf[2];
qemu_irq pin;
uint8_t pointer;
uint8_t config;
int16_t temperature;
int16_t limit[2];
int faults;
uint8_t alarm;
} TMP105State;
/** /**
* tmp105_set: * tmp105_set:
* @i2c: dispatcher to TMP105 hardware model * @i2c: dispatcher to TMP105 hardware model