[v8 1/8] rtc: pcf8563: Add driver model support

[Biwen Li]

> Subject: [v8 1/8] rtc: pcf8563: Add driver model support
> 
> Add support of driver model of pcf8563
> 
> Signed-off-by: Biwen Li <biwen.li at nxp.com>
> ---
> Changes in v8:
> 	- none
> 
> Changes in v7:
> 	- none
> 
> 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 | 107
> ++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 107 insertions(+)
> 
> diff --git a/drivers/rtc/pcf8563.c b/drivers/rtc/pcf8563.c index
> a839d6cc98..44204e133e 100644
> --- a/drivers/rtc/pcf8563.c
> +++ b/drivers/rtc/pcf8563.c
> @@ -12,9 +12,11 @@
> 
>  #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 +117,108 @@ 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
Hi Priyanka, any commnets?