mediatek/mt8183: Add RTC support

This patch implements RTC initialization.
1. initialization dcxo
2. rtc clock using dcxo 32k
3. export RTC_32K1V8_0 to SOC, export RTC_32K1V8_1 to WLAN
4. rtc register initialization
5. refactor the driver common part

BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui

Change-Id: Icccb9360a507fcbfd865b107cd3630e71c810d55
Signed-off-by: Ran Bi <ran.bi@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/31046
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 4 insertions, 70 deletions

diff --git a/src/soc/mediatek/mt8173/include/soc/rtc.h b/src/soc/mediatek/mt8173/include/soc/rtc.h
index dd3546a13c..fe5cbac277 100644
--- a/src/soc/mediatek/mt8173/include/soc/rtc.h
+++ b/src/soc/mediatek/mt8173/include/soc/rtc.h
@@ -16,28 +16,10 @@
 #ifndef SOC_MEDIATEK_MT8173_RTC_H
 #define SOC_MEDIATEK_MT8173_RTC_H
 
+#include <soc/rtc_common.h>
 #include <stdint.h>
 #include "mt6391.h"
 
-/*
- * Default values for RTC initialization
- * Year (YEA)        : 1970 ~ 2037
- * Month (MTH)       : 1 ~ 12
- * Day of Month (DOM): 1 ~ 31
- */
-
-enum {
-	RTC_DEFAULT_YEA = 2010,
-	RTC_DEFAULT_MTH = 1,
-	RTC_DEFAULT_DOM = 1,
-	RTC_DEFAULT_DOW = 5
-};
-
-enum {
-	RTC_2SEC_REBOOT_ENABLE  = 1,
-	RTC_2SEC_MODE   = 2
-};
-
 /* RTC registers */
 enum {
 	RTC_BBPU = 0xE000,
@@ -89,16 +71,6 @@ enum {
 };
 
 enum {
-	RTC_OSC32CON_UNLOCK1 = 0x1A57,
-	RTC_OSC32CON_UNLOCK2 = 0x2B68
-};
-
-enum {
-	RTC_PROT_UNLOCK1 = 0x586A,
-	RTC_PROT_UNLOCK2 = 0x9136
-};
-
-enum {
 	RTC_BBPU_PWREN	= 1U << 0,
 	RTC_BBPU_BBPU	= 1U << 2,
 	RTC_BBPU_AUTO	= 1U << 3,
@@ -110,34 +82,11 @@ enum {
 };
 
 enum {
-	RTC_BBPU_KEY	= 0x43 << 8
-};
-
-enum {
-	RTC_IRQ_STA_AL	= 1U << 0,
-	RTC_IRQ_STA_TC	= 1U << 1,
-	RTC_IRQ_STA_LP	= 1U << 3
-};
-
-enum {
-	RTC_IRQ_EN_AL		= 1U << 0,
-	RTC_IRQ_EN_TC		= 1U << 1,
-	RTC_IRQ_EN_ONESHOT	= 1U << 2,
-	RTC_IRQ_EN_LP		= 1U << 3,
-	RTC_IRQ_EN_ONESHOT_AL	= RTC_IRQ_EN_ONESHOT | RTC_IRQ_EN_AL
-};
-
-enum {
 	RTC_OSC32CON_AMPEN	= 1U << 8,
 	RTC_OSC32CON_LNBUFEN	= 1U << 11
 };
 
 enum {
-	RTC_POWERKEY1_KEY	= 0xa357,
-	RTC_POWERKEY2_KEY	= 0x67d2
-};
-
-enum {
 	RTC_CON_LPEN		= 1U << 2,
 	RTC_CON_LPRST		= 1U << 3,
 	RTC_CON_CDBO		= 1U << 4,
@@ -161,24 +110,9 @@ enum {
 	RTC_CALI_BBPU_2SEC_STAT		= 1U << 11
 };
 
-enum {
-	RTC_SPAR0_32K_LESS	= 1U << 6
-};
-
-enum {
-	RTC_MIN_YEAR	= 1968,
-	RTC_BASE_YEAR	= 1900,
-	RTC_MIN_YEAR_OFFSET = RTC_MIN_YEAR - RTC_BASE_YEAR,
-
-	RTC_NUM_YEARS	= 128
-};
-
-enum {
-	RTC_STATE_REBOOT	= 0,
-	RTC_STATE_RECOVER	= 1,
-	RTC_STATE_INIT		= 2
-};
-
+/* external API */
+void rtc_osc_init(void);
+int rtc_init(u8 recover);
 void rtc_boot(void);
 
 #endif /* SOC_MEDIATEK_MT8173_RTC_H */