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hw/sensor/tmp105: Convert printf() to trace event, add tracing for read/write access

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printf() unconditionally prints to the console which disturbs `-serial stdio`.
Fix that by converting into a trace event. While at it, add some tracing for
read and write access.

Fixes: 7e7c5e4c1b "Nokia N800 machine support (ARM)."
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20241103143330.123596-5-shentey@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Bernhard Beschow 2024-11-05 10:10:00 +00:00 committed by Peter Maydell
parent fe06088b3c
commit 3647dca9fb
4 changed files with 14 additions and 1 deletions
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7
hw/sensor/tmp105.c
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@ -27,6 +27,7 @@
#include "qapi/visitor.h"
#include "qemu/module.h"
#include "hw/registerfields.h"
#include "trace.h"
FIELD(CONFIG, SHUTDOWN_MODE, 0, 1)
FIELD(CONFIG, THERMOSTAT_MODE, 1, 1)
@ -150,17 +151,21 @@ static void tmp105_read(TMP105State *s)
s->buf[s->len++] = ((uint16_t) s->limit[1]) >> 0;
break;
}
trace_tmp105_read(s->i2c.address, s->pointer);
}
static void tmp105_write(TMP105State *s)
{
trace_tmp105_write(s->i2c.address, s->pointer);
switch (s->pointer & 3) {
case TMP105_REG_TEMPERATURE:
break;
case TMP105_REG_CONFIG:
if (FIELD_EX8(s->buf[0] & ~s->config, CONFIG, SHUTDOWN_MODE)) {
printf("%s: TMP105 shutdown\n", __func__);
trace_tmp105_write_shutdown(s->i2c.address);
}
s->config = FIELD_DP8(s->buf[0], CONFIG, ONE_SHOT, 0);
s->faults = tmp105_faultq[FIELD_EX8(s->config, CONFIG, FAULT_QUEUE)];

6
hw/sensor/trace-events Normal file
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@ -0,0 +1,6 @@
# See docs/devel/tracing.rst for syntax documentation.
# tmp105.c
tmp105_read(uint8_t dev, uint8_t addr) "device: 0x%02x, addr: 0x%02x"
tmp105_write(uint8_t dev, uint8_t addr) "device: 0x%02x, addr 0x%02x"
tmp105_write_shutdown(uint8_t dev) "device: 0x%02x"

1
hw/sensor/trace.h Normal file
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@ -0,0 +1 @@
#include "trace/trace-hw_sensor.h"

1
meson.build
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@ -3484,6 +3484,7 @@ if have_system
'hw/s390x',
'hw/scsi',
'hw/sd',
'hw/sensor',
'hw/sh4',
'hw/sparc',
'hw/sparc64',