-----Original Message----- From: U-Boot u-boot-bounces@lists.denx.de On Behalf Of Biwen Li Sent: Sunday, April 12, 2020 2:24 PM To: Jagdish Gediya jagdish.gediya@nxp.com; Priyanka Jain priyanka.jain@nxp.com; hs@denx.de; jagan@amarulasolutions.com; aford173@gmail.com; Alison Wang alison.wang@nxp.com; jh80.chung@samsung.com; Pramod Kumar pramod.kumar_1@nxp.com; Rajesh Bhagat rajesh.bhagat@nxp.com; Ruchika Gupta ruchika.gupta@nxp.com; olteanv@gmail.com Cc: Xiaobo Xie xiaobo.xie@nxp.com; Jiafei Pan jiafei.pan@nxp.com; u- boot@lists.denx.de; Z.q. Hou zhiqiang.hou@nxp.com; Biwen Li biwen.li@nxp.com Subject: [PATCH 01/27] rtc: ds1337: Add driver model support
From: Biwen Li biwen.li@nxp.com
Add support of driver model of ds1337
Signed-off-by: Biwen Li biwen.li@nxp.com
drivers/rtc/ds1337.c | 127 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+)
diff --git a/drivers/rtc/ds1337.c b/drivers/rtc/ds1337.c index 9b31048e97..e12d368675 100644 --- a/drivers/rtc/ds1337.c +++ b/drivers/rtc/ds1337.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ /*
- (C) Copyright 2001-2008
- Copyright 2020 NXP
- Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- Keith Outwater, keith_outwater@mvis.com`
*/ @@ -12,6 +13,7 @@
#include <common.h> #include <command.h> +#include <dm.h> #include <rtc.h> #include <i2c.h>
@@ -60,6 +62,7 @@ #define RTC_STAT_BIT_OSF 0x80 /* Oscillator stop flag */
+#if !CONFIG_IS_ENABLED(DM_RTC) static uchar rtc_read (uchar reg); static void rtc_write (uchar reg, uchar val);
@@ -188,3 +191,127 @@ static void rtc_write (uchar reg, uchar val) { i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val); } +#else +static uchar rtc_read (struct udevice *dev, uchar reg) {
- return (dm_i2c_reg_read (dev, reg));
+}
+static void rtc_write (struct udevice *dev, uchar reg, uchar val) {
- dm_i2c_reg_write (dev, reg, val);
+}
+static int ds1337_rtc_get (struct udevice *dev, struct rtc_time *tmp) {
- int rel = 0;
- uchar sec, min, hour, mday, wday, mon_cent, year, control, status;
- control = rtc_read (dev, RTC_CTL_REG_ADDR);
- status = rtc_read (dev, RTC_STAT_REG_ADDR);
- sec = rtc_read (dev, RTC_SEC_REG_ADDR);
- min = rtc_read (dev, RTC_MIN_REG_ADDR);
- hour = rtc_read (dev, RTC_HR_REG_ADDR);
- wday = rtc_read (dev, RTC_DAY_REG_ADDR);
- mday = rtc_read (dev, RTC_DATE_REG_ADDR);
- mon_cent = rtc_read (dev, RTC_MON_REG_ADDR);
- year = rtc_read (dev, RTC_YR_REG_ADDR);
- /* No century bit, assume year 2000 */ #ifdef CONFIG_RTC_DS1388
- mon_cent |= 0x80;
+#endif
- debug("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x
"
"hr: %02x min: %02x sec: %02x control: %02x status: %02x\n",year, mon_cent, mday, wday, hour, min, sec, control, status);- if (status & RTC_STAT_BIT_OSF) {
printf ("### Warning: RTC oscillator has stopped\n");/* clear the OSF flag */rtc_write (dev, RTC_STAT_REG_ADDR,rtc_read (dev, RTC_STAT_REG_ADDR) &~RTC_STAT_BIT_OSF);
rel = -1;- }
- tmp->tm_sec = bcd2bin (sec & 0x7F);
- tmp->tm_min = bcd2bin (min & 0x7F);
- tmp->tm_hour = bcd2bin (hour & 0x3F);
- tmp->tm_mday = bcd2bin (mday & 0x3F);
- tmp->tm_mon = bcd2bin (mon_cent & 0x1F);
- tmp->tm_year = bcd2bin (year) + ((mon_cent & 0x80) ? 2000 : 1900);
- tmp->tm_wday = bcd2bin ((wday - 1) & 0x07);
- tmp->tm_yday = 0;
- tmp->tm_isdst= 0;
- debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME:
%2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp-tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);- return rel;
+}
+static int ds1337_rtc_set (struct udevice *dev, const struct rtc_time +*tmp) {
- uchar century;
- debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME:
%2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp-tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);- rtc_write (dev, RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100));
- century = (tmp->tm_year >= 2000) ? 0x80 : 0;
- rtc_write (dev, RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon) |
century);
- rtc_write (dev, RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday + 1));
- rtc_write (dev, RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday));
- rtc_write (dev, RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour));
- rtc_write (dev, RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min));
- rtc_write (dev, RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));
- return 0;
+}
+#ifdef CONFIG_RTC_DS1337_NOOSC
- #define RTC_DS1337_RESET_VAL \
- (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2) #else
#define +RTC_DS1337_RESET_VAL (RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2) #endif static +int ds1337_rtc_reset (struct udevice *dev) { #ifdef CONFIG_RTC_DS1337
- rtc_write (dev, RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL); #elif
defined +CONFIG_RTC_DS1388
- rtc_write(dev, RTC_CTL_REG_ADDR, 0x0); /* hw default */ #endif
#ifdef +CONFIG_RTC_DS1339_TCR_VAL
- rtc_write (dev, RTC_TC_REG_ADDR, CONFIG_RTC_DS1339_TCR_VAL);
#endif +#ifdef CONFIG_RTC_DS1388_TCR_VAL
- rtc_write(dev, RTC_TC_REG_ADDR, CONFIG_RTC_DS1388_TCR_VAL);
#endif
- return 0;
+}
+static const struct rtc_ops ds1337_rtc_ops = {
- .get = ds1337_rtc_get,
- .set = ds1337_rtc_set,
- .reset = ds1337_rtc_reset,
+};
+static const struct udevice_id ds1337_rtc_ids[] = {
- { .compatible = "ds1337" },
- { .compatible = "ds1338" },
- { .compatible = "ds1338" },
- { }
+};
+U_BOOT_DRIVER(rtc_ds1337) = {
- .name = "rtc-ds1337",
- .id = UCLASS_RTC,
- .of_match = ds1337_rtc_ids,
- .ops = &ds1337_rtc_ops,
+};
+#endif
2.17.1
Reviewed-by: Priyanka Jain priyanka.jain@nxp.com