Add support of driver model of pcf8563
Signed-off-by: Biwen Li <biwen...@nxp.com>
---
Changes in v6:
- none
Changes in v5:
- none
Changes in v4:
- update commit messages
- update copyright
Changes in v3:
- update commit messages
Changes in v2:
- none
drivers/rtc/pcf8563.c | 108 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 108 insertions(+)
diff --git a/drivers/rtc/pcf8563.c b/drivers/rtc/pcf8563.c
index a839d6cc98..d99e0b70a6 100644
--- a/drivers/rtc/pcf8563.c
+++ b/drivers/rtc/pcf8563.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001
+ * (C) Copyright 2019 NXP
* Wolfgang Denk, DENX Software Engineering, w...@denx.de.
*/
@@ -12,9 +13,11 @@
#include <common.h>
#include <command.h>
+#include <dm.h>
#include <rtc.h>
#include <i2c.h>
+#if !CONFIG_IS_ENABLED(DM_RTC)
static uchar rtc_read (uchar reg);
static void rtc_write (uchar reg, uchar val);
@@ -115,3 +118,108 @@ static void rtc_write (uchar reg, uchar val)
{
i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
}
+#else
+static int pcf8563_rtc_get(struct udevice *dev, struct rtc_time *tmp)
+{
+ int rel = 0;
+ uchar sec, min, hour, mday, wday, mon_cent, year;
+
+ sec = dm_i2c_reg_read(dev, 0x02);
+ min = dm_i2c_reg_read(dev, 0x03);
+ hour = dm_i2c_reg_read(dev, 0x04);
+ mday = dm_i2c_reg_read(dev, 0x05);
+ wday = dm_i2c_reg_read(dev, 0x06);
+ mon_cent = dm_i2c_reg_read(dev, 0x07);
+ year = dm_i2c_reg_read(dev, 0x08);
+
+ debug ("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+ "hr: %02x min: %02x sec: %02x\n",
+ year, mon_cent, mday, wday,
+ hour, min, sec);
+ debug ("Alarms: wday: %02x day: %02x hour: %02x min: %02x\n",
+ dm_i2c_reg_read(dev, 0x0C),
+ dm_i2c_reg_read(dev, 0x0B),
+ dm_i2c_reg_read(dev, 0x0A),
+ dm_i2c_reg_read(dev, 0x09));
+
+ if (sec & 0x80) {
+ puts ("### Warning: RTC Low Voltage - date/time not
reliable\n");
+ 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) ? 1900 : 2000);
+ tmp->tm_wday = bcd2bin (wday & 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 pcf8563_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);
+
+ dm_i2c_reg_write(dev, 0x08, bin2bcd(tmp->tm_year % 100));
+
+ century = (tmp->tm_year >= 2000) ? 0 : 0x80;
+ dm_i2c_reg_write(dev, 0x07, bin2bcd(tmp->tm_mon) | century);
+
+ dm_i2c_reg_write(dev, 0x06, bin2bcd(tmp->tm_wday));
+ dm_i2c_reg_write(dev, 0x05, bin2bcd(tmp->tm_mday));
+ dm_i2c_reg_write(dev, 0x04, bin2bcd(tmp->tm_hour));
+ dm_i2c_reg_write(dev, 0x03, bin2bcd(tmp->tm_min));
+ dm_i2c_reg_write(dev, 0x02, bin2bcd(tmp->tm_sec));
+
+ return 0;
+}
+
+static int pcf8563_rtc_reset(struct udevice *dev)
+{
+ /* clear all control & status registers */
+ dm_i2c_reg_write(dev, 0x00, 0x00);
+ dm_i2c_reg_write(dev, 0x01, 0x00);
+ dm_i2c_reg_write(dev, 0x0D, 0x00);
+
+ /* clear Voltage Low bit */
+ dm_i2c_reg_write(dev, 0x02, dm_i2c_reg_read (dev, 0x02) & 0x7F);
+
+ /* reset all alarms */
+ dm_i2c_reg_write(dev, 0x09, 0x00);
+ dm_i2c_reg_write(dev, 0x0A, 0x00);
+ dm_i2c_reg_write(dev, 0x0B, 0x00);
+ dm_i2c_reg_write(dev, 0x0C, 0x00);
+
+ return 0;
+}
+
+static const struct rtc_ops pcf8563_rtc_ops = {
+ .get = pcf8563_rtc_get,
+ .set = pcf8563_rtc_set,
+ .reset = pcf8563_rtc_reset,
+};
+
+static const struct udevice_id pcf8563_rtc_ids[] = {
+ { .compatible = "nxp,pcf8563" },
+ { }
+};
+
+U_BOOT_DRIVER(rtc_pcf8563) = {
+ .name = "rtc-pcf8563",
+ .id = UCLASS_RTC,
+ .of_match = pcf8563_rtc_ids,
+ .ops = &pcf8563_rtc_ops,
+};
+#endif
--
2.17.1
