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authorRafaël Carré <rafael.carre@gmail.com>2010-05-22 00:28:03 +0000
committerRafaël Carré <rafael.carre@gmail.com>2010-05-22 00:28:03 +0000
commit172fc967b07f59e4928db9ca331f2f7a3a383c04 (patch)
treec87f3d76efae7b84f0061336ed555d1e5a1f38c8 /firmware
parent2e004fd4047a03e0e57bdb02a67a85a729a3caaa (diff)
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as3525v2: RTC alarm
A specific poweroff function needs to be used for wake-up to work Disable RTC in bootloaders for consistency with other Sansas git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26243 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware')
-rw-r--r--firmware/drivers/rtc/rtc_as3514.c107
-rw-r--r--firmware/export/as3514.h4
-rw-r--r--firmware/export/config/sansaclipplus.h5
-rw-r--r--firmware/export/config/sansaclipv2.h5
-rw-r--r--firmware/export/config/sansafuzev2.h6
-rw-r--r--firmware/target/arm/as3525/power-as3525.c8
6 files changed, 131 insertions, 4 deletions
diff --git a/firmware/drivers/rtc/rtc_as3514.c b/firmware/drivers/rtc/rtc_as3514.c
index 8597d138fb..fe2921b433 100644
--- a/firmware/drivers/rtc/rtc_as3514.c
+++ b/firmware/drivers/rtc/rtc_as3514.c
@@ -51,6 +51,112 @@ static inline bool is_leapyear(int year)
return false;
}
+#ifdef HAVE_RTC_ALARM /* as3543 */
+static int wakeup_h;
+static int wakeup_m;
+static bool alarm_enabled = false;
+
+void rtc_set_alarm(int h, int m)
+{
+ wakeup_h = h;
+ wakeup_m = m;
+}
+
+void rtc_get_alarm(int *h, int *m)
+{
+ *h = wakeup_h;
+ *m = wakeup_m;
+}
+
+void rtc_alarm_poweroff(void)
+{
+ if(!alarm_enabled)
+ return;
+
+ struct tm tm;
+ rtc_read_datetime(&tm);
+ int hours = wakeup_h - tm.tm_hour;
+ int mins = wakeup_m - tm.tm_min;
+ if(mins < 0)
+ {
+ mins += 60;
+ hours -= 1;
+ }
+ if(hours < 0)
+ hours += 24;
+
+ uint32_t seconds = hours*3600 + mins*60;
+ if(seconds == 0)
+ seconds = 24*3600;
+
+ seconds -= tm.tm_sec;
+
+ disable_irq();
+
+ ascodec_write_pmu(0x1a, 4, 0x0); // In_Cntr : disable hearbeat source
+
+ ascodec_write(AS3543_WAKEUP, seconds);
+ seconds >>= 8;
+ ascodec_write(AS3543_WAKEUP, seconds);
+ seconds >>= 8;
+ seconds |= 1<<7; /* enable bit */
+ ascodec_write(AS3543_WAKEUP, seconds);
+
+ /* write our watermark : desired time of wake up */
+ ascodec_write(AS3543_WAKEUP, wakeup_h);
+ ascodec_write(AS3543_WAKEUP, wakeup_m);
+
+ ascodec_write(AS3514_SYSTEM, (1<<3) | (1<<0)); // enable hearbeat watchdog
+
+ while(1);
+}
+
+bool rtc_enable_alarm(bool enable)
+{
+ return alarm_enabled = enable;
+}
+
+bool rtc_check_alarm_started(bool release_alarm)
+{
+ (void) release_alarm;
+
+ /* was it an alarm that triggered power on ? */
+ bool alarm_start = false;
+
+ /* 3 first reads give the 23 bits counter and enable bit */
+ ascodec_read(AS3543_WAKEUP); /* bits 7:0 */
+ ascodec_read(AS3543_WAKEUP); /* bits 15:8 */
+ if(ascodec_read(AS3543_WAKEUP) & (1<<7)) /* enable bit */
+ {
+ alarm_enabled = true;
+
+ /* subsequent reads give the 16 bytes static SRAM */
+ wakeup_h = ascodec_read(AS3543_WAKEUP);
+ wakeup_m = ascodec_read(AS3543_WAKEUP);
+
+ struct tm tm;
+ rtc_read_datetime(&tm);
+
+ /* do we wake up at the programmed time, or for another reason ? */
+ if(wakeup_h == tm.tm_hour && wakeup_m == tm.tm_min)
+ alarm_start = true;
+ }
+
+ /* disable alarm */
+ ascodec_write(AS3543_WAKEUP, 0); /* bits 7:0 */
+ ascodec_write(AS3543_WAKEUP, 0); /* bits 15:8 */
+ ascodec_write(AS3543_WAKEUP, 0); /* bits 22:16 + enable bit */
+
+ return alarm_start;
+}
+
+bool rtc_check_alarm_flag(void)
+{
+ /* We don't need to do anything special if it has already fired */
+ return false;
+}
+#endif /* HAVE_RTC_ALARM */
+
void rtc_init(void)
{
}
@@ -168,4 +274,3 @@ int rtc_write_datetime(const struct tm *tm)
}
return 1;
}
-
diff --git a/firmware/export/as3514.h b/firmware/export/as3514.h
index e9eda62ee3..31253724a7 100644
--- a/firmware/export/as3514.h
+++ b/firmware/export/as3514.h
@@ -96,6 +96,10 @@ extern void audiohw_set_lineout_vol(int vol_l, int vol_r);
#define AS3514_SUPERVISOR 0x24
#endif
+#ifdef HAVE_AS3543
+#define AS3543_WAKEUP 0x22
+#endif
+
/* AS3543 has 2 IRQ_ENRD registers at 0x23 and 0x24, but we don't use them
* We call the real IRQ_ENRD2 register, IRQ_ENRD0, to stay compatible with
* as3514, because the bits we use are the same
diff --git a/firmware/export/config/sansaclipplus.h b/firmware/export/config/sansaclipplus.h
index ab4408afe5..9382b22cbd 100644
--- a/firmware/export/config/sansaclipplus.h
+++ b/firmware/export/config/sansaclipplus.h
@@ -101,9 +101,12 @@
#define HAVE_AS3514
#define HAVE_AS3543
-/* define this if you have a real-time clock */
#ifndef BOOTLOADER
+/* define this if you have a real-time clock */
#define CONFIG_RTC RTC_AS3514
+
+/* Define if the device can wake from an RTC alarm */
+#define HAVE_RTC_ALARM
#endif
/* Define this if you have a software controlled poweroff */
diff --git a/firmware/export/config/sansaclipv2.h b/firmware/export/config/sansaclipv2.h
index 262ed36167..3ae09b7003 100644
--- a/firmware/export/config/sansaclipv2.h
+++ b/firmware/export/config/sansaclipv2.h
@@ -97,9 +97,12 @@
#define HAVE_AS3514
#define HAVE_AS3543
-/* define this if you have a real-time clock */
#ifndef BOOTLOADER
+/* define this if you have a real-time clock */
#define CONFIG_RTC RTC_AS3514
+
+/* Define if the device can wake from an RTC alarm */
+#define HAVE_RTC_ALARM
#endif
/* Define this if you have a software controlled poweroff */
diff --git a/firmware/export/config/sansafuzev2.h b/firmware/export/config/sansafuzev2.h
index a21eb34f94..8b13217dce 100644
--- a/firmware/export/config/sansafuzev2.h
+++ b/firmware/export/config/sansafuzev2.h
@@ -61,10 +61,14 @@
/* define this if you can invert the colours on your LCD */
//#define HAVE_LCD_INVERT
-
+#ifndef BOOTLOADER
/* define this if you have a real-time clock */
#define CONFIG_RTC RTC_AS3514
+/* Define if the device can wake from an RTC alarm */
+#define HAVE_RTC_ALARM
+#endif
+
/* There is no hardware tone control */
#define HAVE_SW_TONE_CONTROLS
diff --git a/firmware/target/arm/as3525/power-as3525.c b/firmware/target/arm/as3525/power-as3525.c
index 7b93dd1cd1..21ce98bd75 100644
--- a/firmware/target/arm/as3525/power-as3525.c
+++ b/firmware/target/arm/as3525/power-as3525.c
@@ -26,6 +26,14 @@
void power_off(void)
{
+#ifdef HAVE_RTC_ALARM
+ /* as3543 RTC wake-up needs a specific power down */
+
+ extern void rtc_alarm_poweroff(void); /* in drivers/rtc/rtc_as3514.c */
+
+ rtc_alarm_poweroff(); /* will return if wake-up isn't enabled */
+#endif /* HAVE_RTC_ALARM */
+
/* clear bit 0 of system register */
ascodec_write(AS3514_SYSTEM, ascodec_read(AS3514_SYSTEM) & ~1);