Commit 2aad80ee authored by Andreas Färber's avatar Andreas Färber Committed by Anthony Liguori
Browse files

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: default avatarAndreas Färber <andreas.faerber@web.de>
Reviewed-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent 6e998903
......@@ -22,20 +22,6 @@
#include "i2c.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)
{
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. */
void tmp105_set(I2CSlave *i2c, int temp)
{
TMP105State *s = (TMP105State *) i2c;
TMP105State *s = TMP105(i2c);
if (temp >= 128000 || temp < -128000) {
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)
{
TMP105State *s = (TMP105State *) i2c;
TMP105State *s = TMP105(i2c);
if (s->len < 2)
if (s->len < 2) {
return s->buf[s->len ++];
else
} else {
return 0xff;
}
}
static int tmp105_tx(I2CSlave *i2c, uint8_t data)
{
TMP105State *s = (TMP105State *) i2c;
TMP105State *s = TMP105(i2c);
if (s->len == 0) {
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)
{
TMP105State *s = (TMP105State *) i2c;
TMP105State *s = TMP105(i2c);
if (event == I2C_START_RECV)
if (event == I2C_START_RECV) {
tmp105_read(s);
}
s->len = 0;
}
......@@ -208,7 +196,7 @@ static const VMStateDescription vmstate_tmp105 = {
static void tmp105_reset(I2CSlave *i2c)
{
TMP105State *s = (TMP105State *) i2c;
TMP105State *s = TMP105(i2c);
s->temperature = 0;
s->pointer = 0;
......@@ -221,7 +209,7 @@ static void tmp105_reset(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);
......@@ -243,7 +231,7 @@ static void tmp105_class_init(ObjectClass *klass, void *data)
}
static const TypeInfo tmp105_info = {
.name = "tmp105",
.name = TYPE_TMP105,
.parent = TYPE_I2C_SLAVE,
.instance_size = sizeof(TMP105State),
.class_init = tmp105_class_init,
......
......@@ -17,6 +17,33 @@
#include "i2c.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:
* @i2c: dispatcher to TMP105 hardware model
......
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