imx233/fuze+: implement rtc (time only, alarm still to implement)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31473 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Amaury Pouly
parent
162fdeaa97
commit
094e62a528
4 changed files with 247 additions and 6 deletions
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@ -540,6 +540,7 @@ target/arm/imx233/power-imx233.c
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target/arm/imx233/powermgmt-imx233.c
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target/arm/imx233/adc-imx233.c
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target/arm/imx233/lradc-imx233.c
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target/arm/imx233/rtc-imx233.c
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#ifndef BOOTLOADER
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target/arm/imx233/debug-imx233.c
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#endif
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@ -22,21 +22,155 @@
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#include "system.h"
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#include "rtc.h"
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#include "timefuncs.h"
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#include "rtc-imx233.h"
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#if defined(SANSA_FUZEPLUS)
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#define SECS_ADJUST 315532800 /* seconds between 1970-1-1 and 1980-1-1 */
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#else
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#define SECS_ADJUST 0
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#endif
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#define MINUTE_SECONDS 60
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#define HOUR_SECONDS 3600
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#define DAY_SECONDS 86400
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#define WEEK_SECONDS 604800
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#define YEAR_SECONDS 31536000
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#define LEAP_YEAR_SECONDS 31622400
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/* Days in each month */
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static unsigned int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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static inline bool is_leapyear(int year)
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{
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if( ((year%4)==0) && (((year%100)!=0) || ((year%400)==0)) )
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return true;
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else
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return false;
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}
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void rtc_init(void)
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{
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imx233_rtc_init();
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}
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int rtc_read_datetime(struct tm *tm)
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{
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(void) tm;
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return -1;
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uint32_t seconds = imx233_rtc_read_seconds() - SECS_ADJUST;
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#ifdef SANSA_FUZEPLUS
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/* The OF uses PERSISTENT2 register to keep the adjustment and only changes
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* SECONDS if necessary. */
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seconds += imx233_rtc_read_persistent(2);
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#else
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/* The Freescale recommended way of keeping time is the number of seconds
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* since 00:00 1/1/1980 */
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#endif
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/* Convert seconds since 00:00 1/1/xxxx (xxxx=year) */
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/* weekday */
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tm->tm_wday = ((seconds % WEEK_SECONDS) / DAY_SECONDS + 2) % 7;
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/* Year */
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int year = 1980;
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while(seconds >= LEAP_YEAR_SECONDS)
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{
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if(is_leapyear(year))
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seconds -= LEAP_YEAR_SECONDS;
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else
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seconds -= YEAR_SECONDS;
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year++;
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}
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if(is_leapyear(year))
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days_in_month[1] = 29;
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else
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{
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days_in_month[1] = 28;
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if(seconds>YEAR_SECONDS)
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{
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year++;
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seconds -= YEAR_SECONDS;
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}
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}
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tm->tm_year = year % 100 + 100;
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/* Month */
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for(int i = 0; i < 12; i++)
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{
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if(seconds < days_in_month[i] * DAY_SECONDS)
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{
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tm->tm_mon = i;
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break;
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}
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seconds -= days_in_month[i] * DAY_SECONDS;
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}
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/* Month Day */
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int mday = seconds / DAY_SECONDS;
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seconds -= mday * DAY_SECONDS;
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tm->tm_mday = mday + 1; /* 1 ... 31 */
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/* Hour */
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int hour = seconds / HOUR_SECONDS;
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seconds -= hour*HOUR_SECONDS;
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tm->tm_hour = hour;
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/* Minute */
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int min = seconds / MINUTE_SECONDS;
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seconds -= min*MINUTE_SECONDS;
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tm->tm_min = min;
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/* Second */
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tm->tm_sec = seconds;
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return 0;
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}
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int rtc_write_datetime(const struct tm *tm)
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{
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(void) tm;
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return -1;
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int i, year;
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unsigned int year_days = 0;
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unsigned int month_days = 0;
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unsigned int seconds = 0;
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year = 2000 + tm->tm_year - 100;
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if(is_leapyear(year))
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days_in_month[1] = 29;
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else
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days_in_month[1] = 28;
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/* Number of days in months gone by this year*/
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for(i = 0; i < tm->tm_mon; i++)
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month_days += days_in_month[i];
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/* Number of days in years gone by since 1-Jan-1980 */
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year_days = 365*(tm->tm_year-100+20) + (tm->tm_year-100-1)/4 + 6;
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/* Convert to seconds since 1-Jan-1980 */
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seconds = tm->tm_sec
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+ tm->tm_min*MINUTE_SECONDS
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+ tm->tm_hour*HOUR_SECONDS
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+ (tm->tm_mday-1)*DAY_SECONDS
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+ month_days*DAY_SECONDS
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+ year_days*DAY_SECONDS;
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seconds += SECS_ADJUST;
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#ifdef SANSA_FUZEPLUS
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/* The OF uses PERSISTENT2 register to keep the adjustment and only changes
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* SECONDS if necessary.
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* NOTE: the OF uses this mechanism to prevent roll back in time. Although
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* Rockbox will handle a negative PERSISTENT2 value, the OF will detect
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* it and won't return in time before SECONDS */
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imx233_rtc_write_persistent(2, seconds - imx233_rtc_read_seconds());
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#else
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/* The Freescale recommended way of keeping time is the number of seconds
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* since 00:00 1/1/1980 */
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imx233_rtc_write_seconds(seconds);
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#endif
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return 0;
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}
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void rtc_set_alarm(int h, int m)
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@ -30,6 +30,7 @@
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#include "power-imx233.h"
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#include "clkctrl-imx233.h"
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#include "powermgmt-imx233.h"
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#include "rtc-imx233.h"
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#include "string.h"
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static struct
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@ -313,10 +314,43 @@ bool dbg_hw_info_powermgmt(void)
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}
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}
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bool dbg_hw_info_rtc(void)
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{
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lcd_setfont(FONT_SYSFIXED);
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while(1)
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{
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int button = get_action(CONTEXT_STD, HZ / 10);
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switch(button)
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{
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case ACTION_STD_NEXT:
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case ACTION_STD_PREV:
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case ACTION_STD_OK:
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case ACTION_STD_MENU:
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lcd_setfont(FONT_UI);
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return true;
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case ACTION_STD_CANCEL:
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lcd_setfont(FONT_UI);
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return false;
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}
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lcd_clear_display();
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struct imx233_rtc_info_t info = imx233_rtc_get_info();
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lcd_putsf(0, 0, "seconds: %lu", info.seconds);
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for(int i = 0; i < 6; i++)
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lcd_putsf(0, i + 1, "persistent%d: 0x%lx", i, info.persistent[i]);
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lcd_update();
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yield();
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}
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}
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bool dbg_hw_info(void)
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{
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return dbg_hw_info_clkctrl() && dbg_hw_info_dma() && dbg_hw_info_adc() &&
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dbg_hw_info_power() && dbg_hw_info_powermgmt() && dbg_hw_target_info();
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dbg_hw_info_power() && dbg_hw_info_powermgmt() && dbg_hw_info_rtc() &&
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dbg_hw_target_info();
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}
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bool dbg_ports(void)
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@ -25,13 +25,85 @@
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#include "system.h"
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#include "cpu.h"
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#define HW_RTC_BASE 0x8005C000
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#define HW_RTC_BASE 0x8005c000
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#define HW_RTC_CTRL (*(volatile uint32_t *)(HW_RTC_BASE + 0x0))
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#define HW_RTC_CTRL__ALARM_IRQ_EN (1 << 0)
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#define HW_RTC_CTRL__ONEMSEC_IRQ_EN (1 << 1)
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#define HW_RTC_CTRL__ALARM_IRQ (1 << 2)
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#define HW_RTC_CTRL__ONEMSEC_IRQ (1 << 3)
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#define HW_RTC_CTRL__WATCHDOGEN (1 << 4)
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#define HW_RTC_CTRL__FORCE_UPDATE (1 << 5)
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#define HW_RTC_CTRL__SUPPRESS_COPY2ANALOG (1 << 6)
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#define HW_RTC_STAT (*(volatile uint32_t *)(HW_RTC_BASE + 0x10))
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#define HW_RTC_STAT__NEW_REGS_BP 8
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#define HW_RTC_STAT__NEW_REGS_BM 0xff00
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#define HW_RTC_STAT__STALE_REGS_BP 16
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#define HW_RTC_STAT__STALE_REGS_BM 0xff0000
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#define HW_RTC_STAT__XTAL32768_PRESENT (1 << 27)
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#define HW_RTC_STAT__XTAL32000_PRESENT (1 << 28)
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#define HW_RTC_STAT__WATCHDOG_PRESENT (1 << 29)
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#define HW_RTC_STAT__ALARM_PRESENT (1 << 30)
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#define HW_RTC_STAT__RTC_PRESENT (1 << 31)
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#define HW_RTC_MILLISECONDS (*(volatile uint32_t *)(HW_RTC_BASE + 0x20))
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#define HW_RTC_SECONDS (*(volatile uint32_t *)(HW_RTC_BASE + 0x30))
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#define HW_RTC_ALARM (*(volatile uint32_t *)(HW_RTC_BASE + 0x40))
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#define HW_RTC_WATCHDOG (*(volatile uint32_t *)(HW_RTC_BASE + 0x50))
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#define HW_RTC_PERSISTENTx(x) (*(volatile uint32_t *)(HW_RTC_BASE + 0x60 + (x) * 0x10))
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#define HW_RTC_PERSISTENT0 (*(volatile uint32_t *)(HW_RTC_BASE + 0x60))
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#define HW_RTC_PERSISTENT0__CLOCKSOURCE (1 << 0)
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#define HW_RTC_PERSISTENT0__ALARM_WAKE_EN (1 << 1)
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#define HW_RTC_PERSISTENT0__ALARM_EN (1 << 2)
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#define HW_RTC_PERSISTENT0__XTAL24MHZ_PWRUP (1 << 4)
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#define HW_RTC_PERSISTENT0__XTAL32KHZ_PWRUP (1 << 5)
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#define HW_RTC_PERSISTENT0__XTAL32_FREQ (1 << 6)
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#define HW_RTC_PERSISTENT0__ALARM_WAKE (1 << 7)
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#define HW_RTC_PERSISTENT0__AUTO_RESTART (1 << 17)
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#define HW_RTC_PERSISTENT0__SPARE_BP 18
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#define HW_RTC_PERSISTENT0__SPARE_BM (0x3fff << 18)
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#define HW_RTC_PERSISTENT0__SPARE__RELEASE_GND (1 << 19)
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#define HW_RTC_PERSISTENT1 (*(volatile uint32_t *)(HW_RTC_BASE + 0x70))
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#define HW_RTC_PERSISTENT2 (*(volatile uint32_t *)(HW_RTC_BASE + 0x80))
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#define HW_RTC_PERSISTENT3 (*(volatile uint32_t *)(HW_RTC_BASE + 0x90))
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#define HW_RTC_PERSISTENT4 (*(volatile uint32_t *)(HW_RTC_BASE + 0xa0))
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#define HW_RTC_PERSISTENT5 (*(volatile uint32_t *)(HW_RTC_BASE + 0xb0))
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struct imx233_rtc_info_t
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{
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uint32_t seconds;
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uint32_t persistent[6];
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};
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static inline void imx233_rtc_init(void)
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{
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__REG_CLR(HW_RTC_CTRL) = __BLOCK_CLKGATE;
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}
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static inline uint32_t imx233_rtc_read_seconds(void)
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{
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return HW_RTC_SECONDS;
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}
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static inline uint32_t imx233_rtc_read_persistent(int idx)
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{
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return HW_RTC_PERSISTENTx(idx);
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}
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void imx233_rtc_write_seconds(uint32_t seconds);
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void imx233_rtc_write_persistent(int idx, uint32_t val);
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struct imx233_rtc_info_t imx233_rtc_get_info(void);
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#endif /* RTC_IMX233_H */
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