Adds devicemodel support to the ISL1208 driver. This patch drops the non-dm API as no board was using it anyway. Also add it to Kconfig.
Signed-off-by: Klaus Goger klaus.goger@theobroma-systems.com Reviewed-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com Reviewed-by: Simon Glass sjg@chromium.org
---
Changes in v3: - Actually adding the changed files before submitting them. Sorry for that.
Changes in v2: - Reword of Kconfig help text
drivers/rtc/Kconfig | 12 +++++ drivers/rtc/isl1208.c | 141 ++++++++++++++++++++++++++++++-------------------- 2 files changed, 98 insertions(+), 55 deletions(-)
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 95ac031243..277dc3de73 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -30,6 +30,18 @@ config RTC_DS1307 Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and compatible Real Time Clock devices.
+config RTC_ISL1208 + bool "Enable ISL1208 driver" + depends on DM_RTC + help + The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and + calendar with automatic leap year correction, 2-byte battery backed SRAM, + automatic power switch-over, alarm function and 15 selectable frequency + outputs. + + This driver supports reading and writing the RTC/calendar and detects + total power failures. + config RTC_RX8010SJ bool "Enable RX8010SJ driver" depends on DM_RTC diff --git a/drivers/rtc/isl1208.c b/drivers/rtc/isl1208.c index 807e2e404e..fa1178a36e 100644 --- a/drivers/rtc/isl1208.c +++ b/drivers/rtc/isl1208.c @@ -14,6 +14,7 @@
#include <common.h> #include <command.h> +#include <dm.h> #include <rtc.h> #include <i2c.h>
@@ -51,45 +52,38 @@ #define RTC_STAT_BIT_BAT 0x02 /* BATTERY BIT */ #define RTC_STAT_BIT_RTCF 0x01 /* REAL TIME CLOCK FAIL BIT */
-static uchar rtc_read (uchar reg); -static void rtc_write (uchar reg, uchar val); - /* * Get the current time from the RTC */
-int rtc_get (struct rtc_time *tmp) +static int isl1208_rtc_get(struct udevice *dev, struct rtc_time *tmp) { - int rel = 0; - uchar sec, min, hour, mday, wday, mon, year, status; - - status = rtc_read (RTC_STAT_REG_ADDR); - sec = rtc_read (RTC_SEC_REG_ADDR); - min = rtc_read (RTC_MIN_REG_ADDR); - hour = rtc_read (RTC_HR_REG_ADDR); - wday = rtc_read (RTC_DAY_REG_ADDR); - mday = rtc_read (RTC_DATE_REG_ADDR); - mon = rtc_read (RTC_MON_REG_ADDR); - year = rtc_read (RTC_YR_REG_ADDR); - - DEBUGR ("Get RTC year: %02x mon: %02x mday: %02x wday: %02x " - "hr: %02x min: %02x sec: %02x status: %02x\n", - year, mon, mday, wday, hour, min, sec, status); - - if (status & RTC_STAT_BIT_RTCF) { + int ret; + uchar buf[8], val; + + ret = dm_i2c_read(dev, 0, buf, sizeof(buf)); + if (ret < 0) + return ret; + + if (buf[RTC_STAT_REG_ADDR] & RTC_STAT_BIT_RTCF) { printf ("### Warning: RTC oscillator has stopped\n"); - rtc_write(RTC_STAT_REG_ADDR, - rtc_read(RTC_STAT_REG_ADDR) &~ (RTC_STAT_BIT_BAT|RTC_STAT_BIT_RTCF)); - rel = -1; + ret = dm_i2c_read(dev, RTC_STAT_REG_ADDR, &val, sizeof(val)); + if (ret < 0) + return ret; + + val = val & ~(RTC_STAT_BIT_BAT | RTC_STAT_BIT_RTCF); + ret = dm_i2c_write(dev, RTC_STAT_REG_ADDR, &val, sizeof(val)); + if (ret < 0) + return ret; }
- 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 & 0x1F); - tmp->tm_year = bcd2bin (year)+2000; - tmp->tm_wday = bcd2bin (wday & 0x07); + tmp->tm_sec = bcd2bin(buf[RTC_SEC_REG_ADDR] & 0x7F); + tmp->tm_min = bcd2bin(buf[RTC_MIN_REG_ADDR] & 0x7F); + tmp->tm_hour = bcd2bin(buf[RTC_HR_REG_ADDR] & 0x3F); + tmp->tm_mday = bcd2bin(buf[RTC_DATE_REG_ADDR] & 0x3F); + tmp->tm_mon = bcd2bin(buf[RTC_MON_REG_ADDR] & 0x1F); + tmp->tm_year = bcd2bin(buf[RTC_YR_REG_ADDR]) + 2000; + tmp->tm_wday = bcd2bin(buf[RTC_DAY_REG_ADDR] & 0x07); tmp->tm_yday = 0; tmp->tm_isdst= 0;
@@ -97,51 +91,88 @@ int rtc_get (struct rtc_time *tmp) tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
- return rel; + return 0; }
/* * Set the RTC */ -int rtc_set (struct rtc_time *tmp) +static int isl1208_rtc_set(struct udevice *dev, const struct rtc_time *tmp) { + int ret; + uchar val, buf[7]; + DEBUGR ("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);
+ if (tmp->tm_year < 2000 || tmp->tm_year > 2099) + printf("WARNING: year should be between 2000 and 2099!\n"); + /* enable write */ - rtc_write(RTC_STAT_REG_ADDR, - rtc_read(RTC_STAT_REG_ADDR) | RTC_STAT_BIT_WRTC); + ret = dm_i2c_read(dev, RTC_STAT_REG_ADDR, &val, sizeof(val)); + if (ret < 0) + return ret; + + val = val | RTC_STAT_BIT_WRTC; + + ret = dm_i2c_write(dev, RTC_STAT_REG_ADDR, &val, sizeof(val)); + if (ret < 0) + return ret; + + buf[RTC_YR_REG_ADDR] = bin2bcd(tmp->tm_year % 100); + buf[RTC_MON_REG_ADDR] = bin2bcd(tmp->tm_mon); + buf[RTC_DAY_REG_ADDR] = bin2bcd(tmp->tm_wday); + buf[RTC_DATE_REG_ADDR] = bin2bcd(tmp->tm_mday); + buf[RTC_HR_REG_ADDR] = bin2bcd(tmp->tm_hour) | 0x80; /* 24h clock */ + buf[RTC_MIN_REG_ADDR] = bin2bcd(tmp->tm_min); + buf[RTC_SEC_REG_ADDR] = bin2bcd(tmp->tm_sec);
- rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100)); - rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon)); - rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday)); - rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday)); - rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour) | 0x80 ); /* 24h clock */ - rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min)); - rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec)); + ret = dm_i2c_write(dev, 0, buf, sizeof(buf)); + if (ret < 0) + return ret;
/* disable write */ - rtc_write(RTC_STAT_REG_ADDR, - rtc_read(RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_WRTC); + ret = dm_i2c_read(dev, RTC_STAT_REG_ADDR, &val, sizeof(val)); + if (ret < 0) + return ret; + + val = val & ~RTC_STAT_BIT_WRTC; + ret = dm_i2c_write(dev, RTC_STAT_REG_ADDR, &val, sizeof(val)); + if (ret < 0) + return ret;
return 0; }
-void rtc_reset (void) +static int isl1208_rtc_reset(struct udevice *dev) { + return 0; }
-/* - * Helper functions - */ - -static uchar rtc_read (uchar reg) +static int isl1208_probe(struct udevice *dev) { - return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg)); -} + i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS | + DM_I2C_CHIP_WR_ADDRESS);
-static void rtc_write (uchar reg, uchar val) -{ - i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val); + return 0; } + +static const struct rtc_ops isl1208_rtc_ops = { + .get = isl1208_rtc_get, + .set = isl1208_rtc_set, + .reset = isl1208_rtc_reset, +}; + +static const struct udevice_id isl1208_rtc_ids[] = { + { .compatible = "isil,isl1208" }, + { } +}; + +U_BOOT_DRIVER(rtc_isl1208) = { + .name = "rtc-isl1208", + .id = UCLASS_RTC, + .probe = isl1208_probe, + .of_match = isl1208_rtc_ids, + .ops = &isl1208_rtc_ops, +};