diff options
Diffstat (limited to 'src/soc/mediatek/mt8173/rtc.c')
| -rw-r--r-- | src/soc/mediatek/mt8173/rtc.c | 197 |
1 files changed, 13 insertions, 184 deletions
diff --git a/src/soc/mediatek/mt8173/rtc.c b/src/soc/mediatek/mt8173/rtc.c index 153e9b4249..5b7d486d87 100644 --- a/src/soc/mediatek/mt8173/rtc.c +++ b/src/soc/mediatek/mt8173/rtc.c @@ -13,133 +13,13 @@ * GNU General Public License for more details. */ -#include <assert.h> -#include <bcd.h> -#include <console/console.h> -#include <delay.h> -#include <rtc.h> -#include <timer.h> - +#include <soc/rtc_common.h> +#include <soc/rtc.h> #include <soc/mt6391.h> #include <soc/pmic_wrap.h> -#include <soc/rtc.h> #define RTC_GPIO_USER_MASK ((1 << 13) - (1 << 8)) -/* ensure rtc write success */ -static inline int rtc_busy_wait(void) -{ - struct stopwatch sw; - u16 bbpu; - - stopwatch_init_usecs_expire(&sw, RTC_CBUSY_TIMEOUT_US); - - do { - pwrap_read(RTC_BBPU, &bbpu); - /* Time > 1sec, time out and set recovery mode enable.*/ - if (stopwatch_expired(&sw)) { - printk(BIOS_INFO, "[RTC] BBPU CBUSY time out !!\n"); - return 0; - } - } while (bbpu & RTC_BBPU_CBUSY); - - return 1; -} - -static int write_trigger(void) -{ - pwrap_write(RTC_WRTGR, 1); - return rtc_busy_wait(); -} - -/* unlock rtc write interface */ -static int writeif_unlock(void) -{ - pwrap_write(RTC_PROT, RTC_PROT_UNLOCK1); - if (!write_trigger()) - return 0; - pwrap_write(RTC_PROT, RTC_PROT_UNLOCK2); - if (!write_trigger()) - return 0; - - return 1; -} - -/* set rtc time */ -int rtc_set(const struct rtc_time *time) -{ - return -1; -} - -/* get rtc time */ -int rtc_get(struct rtc_time *time) -{ - u16 value; - - pwrap_read(RTC_TC_SEC, &value); - time->sec = value; - pwrap_read(RTC_TC_MIN, &value); - time->min = value; - pwrap_read(RTC_TC_HOU, &value); - time->hour = value; - pwrap_read(RTC_TC_DOM, &value); - time->mday = value; - pwrap_read(RTC_TC_MTH, &value); - time->mon = value; - pwrap_read(RTC_TC_YEA, &value); - time->year = (value + RTC_MIN_YEAR_OFFSET) % 100; - - return 0; -} - -/* set rtc xosc setting */ -static void rtc_xosc_write(u16 val) -{ - pwrap_write(RTC_OSC32CON, RTC_OSC32CON_UNLOCK1); - udelay(200); - pwrap_write(RTC_OSC32CON, RTC_OSC32CON_UNLOCK2); - udelay(200); - - pwrap_write(RTC_OSC32CON, val); - udelay(200); - pwrap_write_field(RTC_BBPU, RTC_BBPU_KEY | RTC_BBPU_RELOAD, 0, 0); - write_trigger(); -} - -/* initialize rtc related registers */ -static int rtc_reg_init(void) -{ - u16 irqsta; - - pwrap_write(RTC_IRQ_EN, 0); - pwrap_write(RTC_CII_EN, 0); - pwrap_write(RTC_AL_MASK, 0); - pwrap_write(RTC_AL_YEA, 1970 - RTC_MIN_YEAR); - pwrap_write(RTC_AL_MTH, 1); - pwrap_write(RTC_AL_DOM, 1); - pwrap_write(RTC_AL_DOW, 4); - pwrap_write(RTC_AL_HOU, 0); - pwrap_write(RTC_AL_MIN, 0); - pwrap_write(RTC_AL_SEC, 0); - - pwrap_write(RTC_DIFF, 0); - pwrap_write(RTC_CALI, 0); - if (!write_trigger()) - return 0; - - pwrap_read(RTC_IRQ_STA, &irqsta); /* read clear */ - - /* init time counters after resetting RTC_DIFF and RTC_CALI */ - pwrap_write(RTC_TC_YEA, RTC_DEFAULT_YEA - RTC_MIN_YEAR); - pwrap_write(RTC_TC_MTH, RTC_DEFAULT_MTH); - pwrap_write(RTC_TC_DOM, RTC_DEFAULT_DOM); - pwrap_write(RTC_TC_DOW, RTC_DEFAULT_DOW); - pwrap_write(RTC_TC_HOU, 0); - pwrap_write(RTC_TC_MIN, 0); - pwrap_write(RTC_TC_SEC, 0); - - return write_trigger(); -} /* initialize rtc related gpio */ static int rtc_gpio_init(void) @@ -155,11 +35,11 @@ static int rtc_gpio_init(void) con |= (RTC_CON_GPEN | RTC_CON_GOE); con &= ~(RTC_CON_F32KOB); pwrap_write(RTC_CON, con); - return write_trigger(); + return rtc_write_trigger(); } /* set xosc mode */ -static void rtc_osc_init(void) +void rtc_osc_init(void) { u16 con; @@ -176,26 +56,26 @@ static void rtc_osc_init(void) static int rtc_lpd_init(void) { pwrap_write_field(RTC_CON, RTC_CON_LPEN, RTC_CON_LPRST, 0); - if (!write_trigger()) + if (!rtc_write_trigger()) return 0; pwrap_write_field(RTC_CON, RTC_CON_LPRST, 0, 0); - if (!write_trigger()) + if (!rtc_write_trigger()) return 0; pwrap_write_field(RTC_CON, 0, RTC_CON_LPRST, 0); - if (!write_trigger()) + if (!rtc_write_trigger()) return 0; return 1; } /* rtc init check */ -static int rtc_init(u8 recover) +int rtc_init(u8 recover) { printk(BIOS_INFO, "[RTC] %s recovery: %d\n", __func__, recover); - if (!writeif_unlock()) + if (!rtc_writeif_unlock()) return 0; if (!rtc_gpio_init()) @@ -213,7 +93,7 @@ static int rtc_init(u8 recover) /* write powerkeys */ pwrap_write(RTC_POWERKEY1, RTC_POWERKEY1_KEY); pwrap_write(RTC_POWERKEY2, RTC_POWERKEY2_KEY); - if (!write_trigger()) + if (!rtc_write_trigger()) return 0; if (recover) @@ -238,8 +118,8 @@ static void rtc_bbpu_power_on(void) /* pull PWRBB high */ bbpu = RTC_BBPU_KEY | RTC_BBPU_AUTO | RTC_BBPU_BBPU | RTC_BBPU_PWREN; pwrap_write(RTC_BBPU, bbpu); - ret = write_trigger(); - printk(BIOS_INFO, "[RTC] %s write_trigger=%d\n", __func__, ret); + ret = rtc_write_trigger(); + printk(BIOS_INFO, "[RTC] %s rtc_write_trigger=%d\n", __func__, ret); /* enable DCXO to transform external 32KHz clock to 26MHz clock directly sent to SoC */ @@ -256,63 +136,12 @@ static void rtc_bbpu_power_on(void) pwrap_write_field(PMIC_RG_TOP_CKPDN2, 0x1, 0, 14); } -static u8 rtc_check_state(void) -{ - u16 con; - u16 pwrky1; - u16 pwrky2; - - pwrap_read(RTC_CON, &con); - pwrap_read(RTC_POWERKEY1, &pwrky1); - pwrap_read(RTC_POWERKEY2, &pwrky2); - - if (con & RTC_CON_LPSTA_RAW) - return RTC_STATE_INIT; - - if (!rtc_busy_wait()) - return RTC_STATE_RECOVER; - - if (!writeif_unlock()) - return RTC_STATE_RECOVER; - - if (pwrky1 != RTC_POWERKEY1_KEY || pwrky2 != RTC_POWERKEY2_KEY) - return RTC_STATE_INIT; - else - return RTC_STATE_REBOOT; -} - /* the rtc boot flow entry */ void rtc_boot(void) { - u16 bbpu; - u16 con; - u16 irqsta; - pwrap_write(PMIC_RG_TOP_CKPDN, 0); pwrap_write(PMIC_RG_TOP_CKPDN2, 0); - switch (rtc_check_state()) { - case RTC_STATE_REBOOT: - pwrap_write_field(RTC_BBPU, RTC_BBPU_KEY | RTC_BBPU_RELOAD, 0, - 0); - write_trigger(); - rtc_osc_init(); - break; - case RTC_STATE_RECOVER: - rtc_init(1); - break; - case RTC_STATE_INIT: - default: - if (!rtc_init(0)) - rtc_init(1); - break; - } - - pwrap_read(RTC_IRQ_STA, &irqsta); /* Read clear */ - pwrap_read(RTC_BBPU, &bbpu); - pwrap_read(RTC_CON, &con); - - printk(BIOS_INFO, "[RTC] irqsta = %x", irqsta); - printk(BIOS_INFO, " bbpu = %#x, con = %#x\n", bbpu, con); + rtc_boot_common(); rtc_bbpu_power_on(); } |