rtc, rx8025: add DM support
add DM support for this RTC driver. Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Heiko Schocher
Tom Rini
parent
f91fb7242a
commit
0c4e81e0eb
@ -10,8 +10,9 @@
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#include <common.h>
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#include <command.h>
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#include <rtc.h>
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#include <dm.h>
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#include <i2c.h>
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#include <rtc.h>
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/*---------------------------------------------------------------------*/
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#undef DEBUG_RTC
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@ -27,6 +28,18 @@
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# define CONFIG_SYS_I2C_RTC_ADDR 0x32
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#endif
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#ifdef CONFIG_DM_RTC
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#define DEV_TYPE struct udevice
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#else
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/* Local udevice */
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struct ludevice {
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u8 chip;
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};
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#define DEV_TYPE struct ludevice
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#endif
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/*
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* RTC register addresses
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*/
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@ -68,21 +81,35 @@
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*/
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/* static uchar rtc_read (uchar reg); */
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#ifdef CONFIG_DM_RTC
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/*
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* on mpc85xx based board with DM and offset len 1
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* accessing rtc works fine. May we can drop this ?
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*/
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#define rtc_read(reg) buf[(reg) & 0xf]
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#else
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#define rtc_read(reg) buf[((reg) + 1) & 0xf]
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#endif
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static void rtc_write(uchar reg, uchar val);
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static int rtc_write(DEV_TYPE *dev, uchar reg, uchar val);
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/*
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* Get the current time from the RTC
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*/
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int rtc_get(struct rtc_time *tmp)
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static int rx8025_rtc_get(DEV_TYPE *dev, struct rtc_time *tmp)
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{
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int rel = 0;
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uchar sec, min, hour, mday, wday, mon, year, ctl2;
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uchar buf[16];
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if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 16))
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#ifdef CONFIG_DM_RTC
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if (dm_i2c_read(dev, 0, buf, sizeof(buf))) {
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#else
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if (i2c_read(dev->chip, 0, 0, buf, 16)) {
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#endif
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printf("Error reading from RTC\n");
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return -EIO;
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}
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sec = rtc_read(RTC_SEC_REG_ADDR);
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min = rtc_read(RTC_MIN_REG_ADDR);
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@ -138,7 +165,7 @@ int rtc_get(struct rtc_time *tmp)
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/*
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* Set the RTC
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*/
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int rtc_set(struct rtc_time *tmp)
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static int rx8025_rtc_set(DEV_TYPE *dev, const struct rtc_time *tmp)
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{
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DEBUGR("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
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@ -147,44 +174,133 @@ int rtc_set(struct rtc_time *tmp)
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if (tmp->tm_year < 1970 || tmp->tm_year > 2069)
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printf("WARNING: year should be between 1970 and 2069!\n");
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rtc_write(RTC_YR_REG_ADDR, bin2bcd(tmp->tm_year % 100));
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rtc_write(RTC_MON_REG_ADDR, bin2bcd(tmp->tm_mon));
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rtc_write(RTC_DAY_REG_ADDR, bin2bcd(tmp->tm_wday));
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rtc_write(RTC_DATE_REG_ADDR, bin2bcd(tmp->tm_mday));
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rtc_write(RTC_HR_REG_ADDR, bin2bcd(tmp->tm_hour));
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rtc_write(RTC_MIN_REG_ADDR, bin2bcd(tmp->tm_min));
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rtc_write(RTC_SEC_REG_ADDR, bin2bcd(tmp->tm_sec));
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if (rtc_write(dev, RTC_YR_REG_ADDR, bin2bcd(tmp->tm_year % 100)))
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return -EIO;
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rtc_write(RTC_CTL1_REG_ADDR, RTC_CTL1_BIT_2412);
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if (rtc_write(dev, RTC_MON_REG_ADDR, bin2bcd(tmp->tm_mon)))
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return -EIO;
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return 0;
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if (rtc_write(dev, RTC_DAY_REG_ADDR, bin2bcd(tmp->tm_wday)))
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return -EIO;
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if (rtc_write(dev, RTC_DATE_REG_ADDR, bin2bcd(tmp->tm_mday)))
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return -EIO;
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if (rtc_write(dev, RTC_HR_REG_ADDR, bin2bcd(tmp->tm_hour)))
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return -EIO;
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if (rtc_write(dev, RTC_MIN_REG_ADDR, bin2bcd(tmp->tm_min)))
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return -EIO;
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if (rtc_write(dev, RTC_SEC_REG_ADDR, bin2bcd(tmp->tm_sec)))
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return -EIO;
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return rtc_write(dev, RTC_CTL1_REG_ADDR, RTC_CTL1_BIT_2412);
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}
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/*
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* Reset the RTC
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*/
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void rtc_reset(void)
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static int rx8025_rtc_reset(DEV_TYPE *dev)
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{
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uchar buf[16];
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uchar ctl2;
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if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 16))
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#ifdef CONFIG_DM_RTC
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if (dm_i2c_read(dev, 0, buf, sizeof(buf))) {
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#else
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if (i2c_read(dev->chip, 0, 0, buf, 16)) {
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#endif
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printf("Error reading from RTC\n");
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return -EIO;
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}
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ctl2 = rtc_read(RTC_CTL2_REG_ADDR);
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ctl2 &= ~(RTC_CTL2_BIT_PON | RTC_CTL2_BIT_VDET);
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ctl2 |= RTC_CTL2_BIT_XST | RTC_CTL2_BIT_VDSL;
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rtc_write(RTC_CTL2_REG_ADDR, ctl2);
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return rtc_write(dev, RTC_CTL2_REG_ADDR, ctl2);
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}
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/*
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* Helper functions
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*/
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static void rtc_write(uchar reg, uchar val)
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static int rtc_write(DEV_TYPE *dev, uchar reg, uchar val)
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{
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uchar buf[2];
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buf[0] = reg << 4;
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buf[1] = val;
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if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 2) != 0)
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#ifdef CONFIG_DM_RTC
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if (dm_i2c_write(dev, 0, buf, 2)) {
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#else
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if (i2c_write(dev->chip, 0, 0, buf, 2) != 0) {
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#endif
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printf("Error writing to RTC\n");
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return -EIO;
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}
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return 0;
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}
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#ifdef CONFIG_DM_RTC
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static int rx8025_probe(struct udevice *dev)
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{
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uchar buf[16];
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int ret = 0;
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if (i2c_get_chip_offset_len(dev) != 1)
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ret = i2c_set_chip_offset_len(dev, 1);
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if (ret)
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return ret;
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return dm_i2c_read(dev, 0, buf, sizeof(buf));
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}
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static const struct rtc_ops rx8025_rtc_ops = {
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.get = rx8025_rtc_get,
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.set = rx8025_rtc_set,
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.reset = rx8025_rtc_reset,
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};
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static const struct udevice_id rx8025_rtc_ids[] = {
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{ .compatible = "epson,rx8025" },
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{ }
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};
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U_BOOT_DRIVER(rx8010sj_rtc) = {
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.name = "rx8025_rtc",
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.id = UCLASS_RTC,
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.probe = rx8025_probe,
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.of_match = rx8025_rtc_ids,
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.ops = &rx8025_rtc_ops,
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};
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#else
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int rtc_get(struct rtc_time *tm)
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{
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struct ludevice dev = {
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.chip = CONFIG_SYS_I2C_RTC_ADDR,
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};
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return rx8025_rtc_get(&dev, tm);
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}
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int rtc_set(struct rtc_time *tm)
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{
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struct ludevice dev = {
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.chip = CONFIG_SYS_I2C_RTC_ADDR,
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};
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return rx8025_rtc_set(&dev, tm);
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}
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void rtc_reset(void)
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{
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struct ludevice dev = {
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.chip = CONFIG_SYS_I2C_RTC_ADDR,
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};
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rx8025_rtc_reset(&dev);
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}
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#endif
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