[Qemu-devel] [PATCH v2 4/5] tmp105: Add debug output

[Andreas Färber]

From: Andreas Färber <andreas.faer...@web.de>

Signed-off-by: Andreas Färber <andreas.faer...@web.de>
---
 hw/tmp105.c |   27 +++++++++++++++++++++++++--
 1 Datei geändert, 25 Zeilen hinzugefügt(+), 2 Zeilen entfernt(-)

diff --git a/hw/tmp105.c b/hw/tmp105.c
index 3ad2d2f..5dafa37 100644
--- a/hw/tmp105.c
+++ b/hw/tmp105.c
@@ -23,6 +23,18 @@
 #include "tmp105.h"
 #include "qapi/visitor.h"
 
+#undef DEBUG_TMP105
+
+static inline void GCC_FMT_ATTR(1, 2) DPRINTF(const char *fmt, ...)
+{
+#ifdef DEBUG_TMP105
+    va_list ap;
+    va_start(ap, fmt);
+    vfprintf(stderr, fmt, ap);
+    va_end(ap);
+#endif
+}
+
 static void tmp105_interrupt_update(TMP105State *s)
 {
     qemu_set_irq(s->pin, s->alarm ^ ((~s->config >> 2) & 1));  /* POL */
@@ -115,10 +127,16 @@ static void tmp105_read(TMP105State *s)
         s->buf[s->len ++] = ((uint16_t) s->limit[1]) >> 0;
         break;
     }
+
+    DPRINTF("%s: %02" PRIx8 " %02" PRIx8 "%02" PRIx8 "\n",
+            __func__, s->pointer, s->buf[0], s->buf[1]);
 }
 
 static void tmp105_write(TMP105State *s)
 {
+    DPRINTF("%s: %02" PRIx8 " %02" PRIx8 "%02" PRIx8 "\n",
+            __func__, s->pointer, s->buf[0], s->buf[1]);
+
     switch (s->pointer & 3) {
     case TMP105_REG_TEMPERATURE:
         break;
@@ -144,18 +162,23 @@ static void tmp105_write(TMP105State *s)
 static int tmp105_rx(I2CSlave *i2c)
 {
     TMP105State *s = TMP105(i2c);
+    int ret;
 
     if (s->len < 2) {
-        return s->buf[s->len ++];
+        ret = s->buf[s->len++];
     } else {
-        return 0xff;
+        ret = 0xff;
     }
+    DPRINTF("%s: <- %02x\n", __func__, ret);
+    return ret;
 }
 
 static int tmp105_tx(I2CSlave *i2c, uint8_t data)
 {
     TMP105State *s = TMP105(i2c);
 
+    DPRINTF("%s: -> %02" PRIx8 "\n", __func__, data);
+
     if (s->len == 0) {
         s->pointer = data;
         s->len++;
-- 
1.7.10.4