diff options
Diffstat (limited to 'hw/sensor/tmp105.c')
| -rw-r--r-- | hw/sensor/tmp105.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/hw/sensor/tmp105.c b/hw/sensor/tmp105.c index a8730d0b7f..ad97c9684c 100644 --- a/hw/sensor/tmp105.c +++ b/hw/sensor/tmp105.c @@ -29,16 +29,17 @@ 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 */ } static void tmp105_alarm_update(TMP105State *s) { - if ((s->config >> 0) & 1) { /* SD */ - if ((s->config >> 7) & 1) /* OS */ - s->config &= ~(1 << 7); /* OS */ - else + if ((s->config >> 0) & 1) { /* SD */ + if ((s->config >> 7) & 1) { /* OS */ + s->config &= ~(1 << 7); /* OS */ + } else { return; + } } if (s->config >> 1 & 1) { @@ -89,7 +90,8 @@ static void tmp105_get_temperature(Object *obj, Visitor *v, const char *name, visit_type_int(v, name, &value, errp); } -/* Units are 0.001 centigrades relative to 0 C. s->temperature is 8.8 +/* + * Units are 0.001 centigrades relative to 0 C. s->temperature is 8.8 * fixed point, so units are 1/256 centigrades. A simple ratio will do. */ static void tmp105_set_temperature(Object *obj, Visitor *v, const char *name, @@ -118,30 +120,30 @@ static void tmp105_read(TMP105State *s) { s->len = 0; - if ((s->config >> 1) & 1) { /* TM */ + if ((s->config >> 1) & 1) { /* TM */ s->alarm = 0; tmp105_interrupt_update(s); } switch (s->pointer & 3) { case TMP105_REG_TEMPERATURE: - s->buf[s->len ++] = (((uint16_t) s->temperature) >> 8); - s->buf[s->len ++] = (((uint16_t) s->temperature) >> 0) & - (0xf0 << ((~s->config >> 5) & 3)); /* R */ + s->buf[s->len++] = (((uint16_t) s->temperature) >> 8); + s->buf[s->len++] = (((uint16_t) s->temperature) >> 0) & + (0xf0 << ((~s->config >> 5) & 3)); /* R */ break; case TMP105_REG_CONFIG: - s->buf[s->len ++] = s->config; + s->buf[s->len++] = s->config; break; case TMP105_REG_T_LOW: - s->buf[s->len ++] = ((uint16_t) s->limit[0]) >> 8; - s->buf[s->len ++] = ((uint16_t) s->limit[0]) >> 0; + s->buf[s->len++] = ((uint16_t) s->limit[0]) >> 8; + s->buf[s->len++] = ((uint16_t) s->limit[0]) >> 0; break; case TMP105_REG_T_HIGH: - s->buf[s->len ++] = ((uint16_t) s->limit[1]) >> 8; - s->buf[s->len ++] = ((uint16_t) s->limit[1]) >> 0; + s->buf[s->len++] = ((uint16_t) s->limit[1]) >> 8; + s->buf[s->len++] = ((uint16_t) s->limit[1]) >> 0; break; } } @@ -153,18 +155,20 @@ static void tmp105_write(TMP105State *s) break; case TMP105_REG_CONFIG: - if (s->buf[0] & ~s->config & (1 << 0)) /* SD */ + if (s->buf[0] & ~s->config & (1 << 0)) { /* SD */ printf("%s: TMP105 shutdown\n", __func__); + } s->config = s->buf[0]; - s->faults = tmp105_faultq[(s->config >> 3) & 3]; /* F */ + s->faults = tmp105_faultq[(s->config >> 3) & 3]; /* F */ tmp105_alarm_update(s); break; case TMP105_REG_T_LOW: case TMP105_REG_T_HIGH: - if (s->len >= 3) + if (s->len >= 3) { s->limit[s->pointer & 1] = (int16_t) ((((uint16_t) s->buf[0]) << 8) | s->buf[1]); + } tmp105_alarm_update(s); break; } @@ -175,7 +179,7 @@ static uint8_t tmp105_rx(I2CSlave *i2c) TMP105State *s = TMP105(i2c); if (s->len < 2) { - return s->buf[s->len ++]; + return s->buf[s->len++]; } else { return 0xff; } @@ -215,7 +219,7 @@ static int tmp105_post_load(void *opaque, int version_id) { TMP105State *s = opaque; - s->faults = tmp105_faultq[(s->config >> 3) & 3]; /* F */ + s->faults = tmp105_faultq[(s->config >> 3) & 3]; /* F */ tmp105_interrupt_update(s); return 0; |