Add raw time and date APIs to libx52

The raw time and date APIs bypass the timezone calculation and update
the internal data structures with the requested time in hh:mm and date
in dd/mm/yy formats.

This is unlikely to be used often, but it is useful during testing.

lib/libx52/Makefile.am

@@ -5,7 +5,7 @@ lib_LTLIBRARIES = libx52.la
 # Core libx52 library
 # This library handles the USB communication between the host and the X52
 libx52_la_SOURCES = x52_control.c x52_core.c x52_date_time.c x52_mfd_led.c
-libx52_la_LDFLAGS = -version-info 2:1:1 -lusb-1.0
+libx52_la_LDFLAGS = -version-info 3:0:2 -lusb-1.0
 
 # Header files that need to be copied
 x52includedir = $(includedir)/x52pro

lib/libx52/libx52.h

@@ -285,6 +285,36 @@ int libx52_set_clock_format(libx52_device *x52,
                             libx52_clock_id clock,
                             libx52_clock_format format);
 
+/**
+ * @brief Set the hour and minute on clock 1
+ *
+ * This is a raw API which can be used for manual control if the user
+ * so desires, however, it will not update the timezone or the date
+ * values.
+ *
+ * @param[in]   x52     Pointer to the device
+ * @param[in]   hour    Hour to display
+ * @param[in]   minute  Minute to display
+ *
+ * @returns 0 on success, \c -EINVAL if \p x52 is not valid
+ */
+int libx52_set_time(libx52_device *x52, uint8_t hour, uint8_t minute);
+
+/**
+ * @brief Set the date
+ *
+ * This is a raw API which can be used for manual control if the user
+ * so desires, however, it will not update the timezone or the time values.
+ *
+ * @param[in]   x52     Pointer to the device
+ * @param[in]   dd      Day to display
+ * @param[in]   mm      Month to display
+ * @param[in]   yy      Year to display
+ *
+ * @returns 0 on success, \c -EINVAL if \p x52 is not valid
+ */
+int libx52_set_date(libx52_device *x52, uint8_t dd, uint8_t mm, uint8_t yy);
+
 /**
  * @brief Set the date format for the MFD date display
  *

lib/libx52/x52_date_time.c

@@ -57,10 +57,7 @@ int libx52_set_clock(libx52_device *x52, time_t time, int local)
         x52->date_month != local_date_month ||
         x52->date_year != local_date_year) {
 
-        x52->date_day = local_date_day;
-        x52->date_month = local_date_month;
-        x52->date_year = local_date_year;
-        set_bit(&x52->update_mask, X52_BIT_MFD_DATE);
+        libx52_set_date(x52, local_date_day, local_date_month, local_date_year);
         update_required = 1;
     }
 
@@ -68,9 +65,7 @@ int libx52_set_clock(libx52_device *x52, time_t time, int local)
     if (x52->time_hour != local_time_hour ||
         x52->time_minute != local_time_minute) {
 
-        x52->time_hour = local_time_hour;
-        x52->time_minute = local_time_minute;
-        set_bit(&x52->update_mask, X52_BIT_MFD_TIME);
+        libx52_set_time(x52, local_time_hour, local_time_minute);
         update_required = 1;
     }
 
@@ -86,6 +81,33 @@ int libx52_set_clock(libx52_device *x52, time_t time, int local)
     return (update_required ? 0 : -EAGAIN);
 }
 
+int libx52_set_time(libx52_device *x52, uint8_t hour, uint8_t minute)
+{
+    if (!x52) {
+        return -EINVAL;
+    }
+
+    x52->time_hour = hour;
+    x52->time_minute = minute;
+    set_bit(&x52->update_mask, X52_BIT_MFD_TIME);
+
+    return 0;
+}
+
+int libx52_set_date(libx52_device *x52, uint8_t dd, uint8_t mm, uint8_t yy)
+{
+    if (!x52) {
+        return -EINVAL;
+    }
+
+    x52->date_day = dd;
+    x52->date_month = mm;
+    x52->date_year = yy;
+    set_bit(&x52->update_mask, X52_BIT_MFD_DATE);
+
+    return 0;
+}
+
 int libx52_set_clock_timezone(libx52_device *x52, libx52_clock_id clock, int offset)
 {
     if (!x52) {