[Qemu-devel] [PATCH 2/4] hw/ds1338.c: Minor fixes

[Antoine Mathys]

Minor fixes in the handling of the RTC registers.

Signed-off-by: Antoine Mathys <barsa...@gmail.com>
---
 hw/ds1338.c |   15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/hw/ds1338.c b/hw/ds1338.c
index 1274b22..1fb152e 100644
--- a/hw/ds1338.c
+++ b/hw/ds1338.c
@@ -62,9 +62,9 @@ static void capture_current_time(DS1338State *s)
     } else {
         s->nvram[2] = to_bcd(now.tm_hour);
     }
-    s->nvram[3] = to_bcd(now.tm_wday) + 1;
+    s->nvram[3] = to_bcd(now.tm_wday + 1);
     s->nvram[4] = to_bcd(now.tm_mday);
-    s->nvram[5] = to_bcd(now.tm_mon) + 1;
+    s->nvram[5] = to_bcd(now.tm_mon + 1);
     s->nvram[6] = to_bcd(now.tm_year - 100);
 }

@@ -119,7 +119,8 @@ static int ds1338_send(I2CSlave *i2c, uint8_t data)
         s->addr_byte = false;
         return 0;
     }
-    if (s->ptr < 8) {
+    if (s->ptr < 7) {
+        /* Time register. */
         struct tm now;
         qemu_get_timedate(&now, s->offset);
         switch(s->ptr) {
@@ -145,7 +146,7 @@ static int ds1338_send(I2CSlave *i2c, uint8_t data)
             }
             break;
         case 3:
-            now.tm_wday = from_bcd(data & 7) - 1;
+            now.tm_wday = from_bcd(data & 0x07) - 1;
             break;
         case 4:
             now.tm_mday = from_bcd(data & 0x3f);
@@ -156,11 +157,11 @@ static int ds1338_send(I2CSlave *i2c, uint8_t data)
         case 6:
             now.tm_year = from_bcd(data) + 100;
             break;
-        case 7:
-            /* Control register. Currently ignored.  */
-            break;
         }
         s->offset = qemu_timedate_diff(&now);
+    } else if (s->ptr == 7) {
+        /* Control register. Currently ignored.  */
+        s->nvram[s->ptr] = data;
     } else {
         s->nvram[s->ptr] = data;
     }
--
1.7.10.4