From: Lucjan Bryndza <lbryndza.oss@icloud.com>

The current implementation of timers does not work properly
even in basic functionality. A counter configured to report
an interrupt every 10ms reports the first interrupts after a
few seconds.  There are also no properly implemented count up an
count down modes. This commit fixes bugs with interrupt
reporting and implements the basic modes of the counter's
time-base block.

Update timer structures

Signed-off-by: Lucjan Bryndza <lbryndza.oss@icloud.com>
---
 include/hw/timer/stm32f2xx_timer.h | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/include/hw/timer/stm32f2xx_timer.h b/include/hw/timer/stm32f2xx_timer.h
index 8112878aa7..c83f7b0d6f 100644
--- a/include/hw/timer/stm32f2xx_timer.h
+++ b/include/hw/timer/stm32f2xx_timer.h
@@ -28,6 +28,7 @@
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
 #include "qom/object.h"
+#include "hw/ptimer.h"
 
 #define TIM_CR1      0x00
 #define TIM_CR2      0x04
@@ -79,12 +80,10 @@ struct STM32F2XXTimerState {
 
     /* <public> */
     MemoryRegion iomem;
-    QEMUTimer *timer;
+    ptimer_state *timer;
     qemu_irq irq;
-
-    int64_t tick_offset;
-    uint64_t hit_time;
     uint64_t freq_hz;
+    int count_mode;
 
     uint32_t tim_cr1;
     uint32_t tim_cr2;
-- 
2.38.5