Merge tag 'rtc-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Two new drivers and the new pcf2127 feature make the bulk of the
  additions. The rest are the usual fixes and new features.

  Subsystem:
   - add debug message when registration fails

  New drivers:
   - Amlogic Virtual Wake
   - Freescale FlexTimer Module alarm

  Drivers:
   - remove superfluous error messages
   - convert to i2c_new_dummy_device and devm_i2c_new_dummy_device
   - Remove dev_err() usage after platform_get_irq()
   - Set RTC range for: pcf2123, pcf8563, snvs.
   - pcf2127: tamper detection and watchdog support
   - pcf85363: fix regmap issue
   - sun6i: H6 support
   - remove w90x900/nuc900 driver"

* tag 'rtc-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (51 commits)
  rtc: meson: mark PM functions as __maybe_unused
  rtc: sc27xx: Remove clearing SPRD_RTC_POWEROFF_ALM_FLAG flag
  dt-bindings: rtc: ds1307: add rx8130 compatible
  rtc: sun6i: Allow using as wakeup source from suspend
  rtc: pcf8563: let the core handle range offsetting
  rtc: pcf8563: remove useless indirection
  rtc: pcf8563: convert to devm_rtc_allocate_device
  rtc: pcf8563: add Microcrystal RV8564 compatible
  rtc: pcf8563: add Epson RTC8564 compatible
  rtc: s35390a: convert to devm_i2c_new_dummy_device()
  rtc: max77686: convert to devm_i2c_new_dummy_device()
  rtc: pcf85363/pcf85263: fix regmap error in set_time
  rtc: snvs: switch to rtc_time64_to_tm/rtc_tm_to_time64
  rtc: snvs: set range
  rtc: snvs: fix possible race condition
  rtc: pcf2127: bugfix: watchdog build dependency
  rtc: pcf2127: add tamper detection support
  rtc: pcf2127: add watchdog feature support
  rtc: pcf2127: bugfix: read rtc disables watchdog
  rtc: pcf2127: cleanup register and bit defines
  ...

58 files changed, 1136 insertions, 722 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index a45175fd8cc4..1adf9f815652 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -373,6 +373,17 @@ config RTC_DRV_MAX77686
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-max77686.
 
+config RTC_DRV_MESON_VRTC
+	tristate "Amlogic Meson Virtual RTC"
+	depends on ARCH_MESON || COMPILE_TEST
+	default m if ARCH_MESON
+	help
+	  If you say yes here you will get support for the
+	  Virtual RTC of Amlogic SoCs.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-meson-vrtc.
+
 config RTC_DRV_RK808
 	tristate "Rockchip RK805/RK808/RK809/RK817/RK818 RTC"
 	depends on MFD_RK808
@@ -500,6 +511,7 @@ config RTC_DRV_M41T80_WDT
 	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
 config RTC_DRV_BD70528
 	tristate "ROHM BD70528 PMIC RTC"
+	depends on MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG)
 	help
 	  If you say Y here you will get support for the RTC
 	  on ROHM BD70528 Power Management IC.
@@ -874,9 +886,15 @@ config RTC_DRV_DS3232_HWMON
 config RTC_DRV_PCF2127
 	tristate "NXP PCF2127"
 	depends on RTC_I2C_AND_SPI
+	select WATCHDOG_CORE if WATCHDOG
 	help
 	  If you say yes here you get support for the NXP PCF2127/29 RTC
-	  chips.
+	  chips with integrated quartz crystal for industrial applications.
+	  Both chips also have watchdog timer and tamper switch detection
+	  features.
+
+	  PCF2127 has an additional feature of 512 bytes battery backed
+	  memory that's accessible using nvmem interface.
 
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-pcf2127.
@@ -1247,13 +1265,6 @@ config RTC_DRV_AB8500
 	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
 	  support. This chip contains a battery- and capacitor-backed RTC.
 
-config RTC_DRV_NUC900
-	tristate "NUC910/NUC920 RTC driver"
-	depends on ARCH_W90X900 || COMPILE_TEST
-	help
-	  If you say yes here you get support for the RTC subsystem of the
-	  NUC910/NUC920 used in embedded systems.
-
 config RTC_DRV_OPAL
 	tristate "IBM OPAL RTC driver"
 	depends on PPC_POWERNV
@@ -1323,6 +1334,21 @@ config RTC_DRV_IMXDI
 	   This driver can also be built as a module, if so, the module
 	   will be called "rtc-imxdi".
 
+config RTC_DRV_FSL_FTM_ALARM
+	tristate "Freescale FlexTimer alarm timer"
+	depends on ARCH_LAYERSCAPE || SOC_LS1021A
+	select FSL_RCPM
+	default y
+	help
+	   For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
+	   LS1088A, LS208xA, we can use FTM as the wakeup source.
+
+	   Say y here to enable FTM alarm support. The FTM alarm provides
+	   alarm functions for wakeup system from deep sleep.
+
+	   This driver can also be built as a module, if so, the module
+	   will be called "rtc-fsl-ftm-alarm".
+
 config RTC_DRV_MESON
 	tristate "Amlogic Meson RTC"
 	depends on (ARM && ARCH_MESON) || COMPILE_TEST
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 6b09c21dc1b6..4ac8f19fb631 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -73,6 +73,7 @@ obj-$(CONFIG_RTC_DRV_EFI)	+= rtc-efi.o
 obj-$(CONFIG_RTC_DRV_EM3027)	+= rtc-em3027.o
 obj-$(CONFIG_RTC_DRV_EP93XX)	+= rtc-ep93xx.o
 obj-$(CONFIG_RTC_DRV_FM3130)	+= rtc-fm3130.o
+obj-$(CONFIG_RTC_DRV_FSL_FTM_ALARM)	+= rtc-fsl-ftm-alarm.o
 obj-$(CONFIG_RTC_DRV_FTRTC010)	+= rtc-ftrtc010.o
 obj-$(CONFIG_RTC_DRV_GENERIC)	+= rtc-generic.o
 obj-$(CONFIG_RTC_DRV_GOLDFISH)	+= rtc-goldfish.o
@@ -102,6 +103,7 @@ obj-$(CONFIG_RTC_DRV_MAX8907)	+= rtc-max8907.o
 obj-$(CONFIG_RTC_DRV_MAX8925)	+= rtc-max8925.o
 obj-$(CONFIG_RTC_DRV_MAX8997)	+= rtc-max8997.o
 obj-$(CONFIG_RTC_DRV_MAX8998)	+= rtc-max8998.o
+obj-$(CONFIG_RTC_DRV_MESON_VRTC)+= rtc-meson-vrtc.o
 obj-$(CONFIG_RTC_DRV_MC13XXX)	+= rtc-mc13xxx.o
 obj-$(CONFIG_RTC_DRV_MCP795)	+= rtc-mcp795.o
 obj-$(CONFIG_RTC_DRV_MESON)	+= rtc-meson.o
@@ -113,7 +115,6 @@ obj-$(CONFIG_RTC_DRV_MT7622)	+= rtc-mt7622.o
 obj-$(CONFIG_RTC_DRV_MV)	+= rtc-mv.o
 obj-$(CONFIG_RTC_DRV_MXC)	+= rtc-mxc.o
 obj-$(CONFIG_RTC_DRV_MXC_V2)	+= rtc-mxc_v2.o
-obj-$(CONFIG_RTC_DRV_NUC900)	+= rtc-nuc900.o
 obj-$(CONFIG_RTC_DRV_OMAP)	+= rtc-omap.o
 obj-$(CONFIG_RTC_DRV_OPAL)	+= rtc-opal.o
 obj-$(CONFIG_RTC_DRV_PALMAS)	+= rtc-palmas.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 0f492b0940b3..9458e6d6686a 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -346,8 +346,10 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc)
 	struct rtc_wkalrm alrm;
 	int err;
 
-	if (!rtc->ops)
+	if (!rtc->ops) {
+		dev_dbg(&rtc->dev, "no ops set\n");
 		return -EINVAL;
+	}
 
 	rtc->owner = owner;
 	rtc_device_get_offset(rtc);
diff --git a/drivers/rtc/rtc-88pm80x.c b/drivers/rtc/rtc-88pm80x.c
index e4d5a19fd1c9..75779e8501a3 100644
--- a/drivers/rtc/rtc-88pm80x.c
+++ b/drivers/rtc/rtc-88pm80x.c
@@ -264,7 +264,6 @@ static int pm80x_rtc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	info->irq = platform_get_irq(pdev, 0);
 	if (info->irq < 0) {
-		dev_err(&pdev->dev, "No IRQ resource!\n");
 		ret = -EINVAL;
 		goto out;
 	}
@@ -296,10 +295,9 @@ static int pm80x_rtc_probe(struct platform_device *pdev)
 	info->rtc_dev->range_max = U32_MAX;
 
 	ret = rtc_register_device(info->rtc_dev);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
+	if (ret)
 		goto out_rtc;
-	}
+
 	/*
 	 * enable internal XO instead of internal 3.25MHz clock since it can
 	 * free running in PMIC power-down state.
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index 434285f495e0..4743b16a8d84 100644
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -328,10 +328,8 @@ static int pm860x_rtc_probe(struct platform_device *pdev)
 	if (!info)
 		return -ENOMEM;
 	info->irq = platform_get_irq(pdev, 0);
-	if (info->irq < 0) {
-		dev_err(&pdev->dev, "No IRQ resource!\n");
+	if (info->irq < 0)
 		return info->irq;
-	}
 
 	info->chip = chip;
 	info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c
index e4f6e0061ccf..d690985caa4c 100644
--- a/drivers/rtc/rtc-ab-eoz9.c
+++ b/drivers/rtc/rtc-ab-eoz9.c
@@ -390,35 +390,31 @@ static int abeoz9_probe(struct i2c_client *client,
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
 				     I2C_FUNC_SMBUS_BYTE_DATA |
-				     I2C_FUNC_SMBUS_I2C_BLOCK)) {
-		ret = -ENODEV;
-		goto err;
-	}
+				     I2C_FUNC_SMBUS_I2C_BLOCK))
+		return -ENODEV;
 
 	regmap = devm_regmap_init_i2c(client, &abeoz9_rtc_regmap_config);
 	if (IS_ERR(regmap)) {
 		ret = PTR_ERR(regmap);
 		dev_err(dev, "regmap allocation failed: %d\n", ret);
-		goto err;
+		return ret;
 	}
 
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
-	if (!data) {
-		ret = -ENOMEM;
-		goto err;
-	}
+	if (!data)
+		return -ENOMEM;
 
 	data->regmap = regmap;
 	dev_set_drvdata(dev, data);
 
 	ret = abeoz9_rtc_setup(dev, client->dev.of_node);
 	if (ret)
-		goto err;
+		return ret;
 
 	data->rtc = devm_rtc_allocate_device(dev);
 	ret = PTR_ERR_OR_ZERO(data->rtc);
 	if (ret)
-		goto err;
+		return ret;
 
 	data->rtc->ops = &rtc_ops;
 	data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
@@ -426,14 +422,10 @@ static int abeoz9_probe(struct i2c_client *client,
 
 	ret = rtc_register_device(data->rtc);
 	if (ret)
-		goto err;
+		return ret;
 
 	abeoz9_hwmon_register(dev, data);
 	return 0;
-
-err:
-	dev_err(dev, "unable to register RTC device (%d)\n", ret);
-	return ret;
 }
 
 #ifdef CONFIG_OF
diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c
index 2e5a8b15b222..29223931aba7 100644
--- a/drivers/rtc/rtc-ac100.c
+++ b/drivers/rtc/rtc-ac100.c
@@ -578,10 +578,8 @@ static int ac100_rtc_probe(struct platform_device *pdev)
 	chip->regmap = ac100->regmap;
 
 	chip->irq = platform_get_irq(pdev, 0);
-	if (chip->irq < 0) {
-		dev_err(&pdev->dev, "No IRQ resource\n");
+	if (chip->irq < 0)
 		return chip->irq;
-	}
 
 	chip->rtc = devm_rtc_allocate_device(&pdev->dev);
 	if (IS_ERR(chip->rtc))
@@ -612,15 +610,7 @@ static int ac100_rtc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = rtc_register_device(chip->rtc);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to register device\n");
-		return ret;
-	}
-
-	dev_info(&pdev->dev, "RTC enabled\n");
-
-	return 0;
+	return rtc_register_device(chip->rtc);
 }
 
 static int ac100_rtc_remove(struct platform_device *pdev)
diff --git a/drivers/rtc/rtc-armada38x.c b/drivers/rtc/rtc-armada38x.c
index 19d6980e90fb..9351bd52477e 100644
--- a/drivers/rtc/rtc-armada38x.c
+++ b/drivers/rtc/rtc-armada38x.c
@@ -502,7 +502,6 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct armada38x_rtc *rtc;
 	const struct of_device_id *match;
-	int ret;
 
 	match = of_match_device(armada38x_rtc_of_match_table, &pdev->dev);
 	if (!match)
@@ -530,11 +529,8 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev)
 		return PTR_ERR(rtc->regs_soc);
 
 	rtc->irq = platform_get_irq(pdev, 0);
-
-	if (rtc->irq < 0) {
-		dev_err(&pdev->dev, "no irq\n");
+	if (rtc->irq < 0)
 		return rtc->irq;
-	}
 
 	rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
 	if (IS_ERR(rtc->rtc_dev))
@@ -564,11 +560,7 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev)
 
 	rtc->rtc_dev->range_max = U32_MAX;
 
-	ret = rtc_register_device(rtc->rtc_dev);
-	if (ret)
-		dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
-
-	return ret;
+	return rtc_register_device(rtc->rtc_dev);
 }
 
 #ifdef CONFIG_PM_SLEEP
diff --git a/drivers/rtc/rtc-asm9260.c b/drivers/rtc/rtc-asm9260.c
index d45a44936308..10413d803caa 100644
--- a/drivers/rtc/rtc-asm9260.c
+++ b/drivers/rtc/rtc-asm9260.c
@@ -257,10 +257,8 @@ static int asm9260_rtc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, priv);
 
 	irq_alarm = platform_get_irq(pdev, 0);
-	if (irq_alarm < 0) {
-		dev_err(dev, "No alarm IRQ resource defined\n");
+	if (irq_alarm < 0)
 		return irq_alarm;
-	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	priv->iobase = devm_ioremap_resource(dev, res);
diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c
index af3eb676d7c3..e351d35b29a3 100644
--- a/drivers/rtc/rtc-aspeed.c
+++ b/drivers/rtc/rtc-aspeed.c
@@ -86,7 +86,6 @@ static int aspeed_rtc_probe(struct platform_device *pdev)
 {
 	struct aspeed_rtc *rtc;
 	struct resource *res;
-	int ret;
 
 	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
 	if (!rtc)
@@ -107,11 +106,7 @@ static int aspeed_rtc_probe(struct platform_device *pdev)
 	rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900;
 	rtc->rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */
 
-	ret = rtc_register_device(rtc->rtc_dev);
-	if (ret)
-		return ret;
-
-	return 0;
+	return rtc_register_device(rtc->rtc_dev);
 }
 
 static const struct of_device_id aspeed_rtc_match[] = {
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index 82a54e93ff04..d119c6e6353e 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -378,10 +378,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "no irq resource defined\n");
+	if (irq < 0)
 		return -ENXIO;
-	}
 
 	at91_rtc_regs = devm_ioremap(&pdev->dev, regs->start,
 				     resource_size(regs));
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 4daf3789b978..bb3ba7bfe6a5 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -342,10 +342,8 @@ static int at91_rtc_probe(struct platform_device *pdev)
 	struct of_phandle_args args;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get interrupt resource\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
 	if (!rtc)
diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c
index f9bdd555e1a2..7744333b0f40 100644
--- a/drivers/rtc/rtc-bd70528.c
+++ b/drivers/rtc/rtc-bd70528.c
@@ -416,11 +416,8 @@ static int bd70528_probe(struct platform_device *pdev)
 	bd_rtc->dev = &pdev->dev;
 
 	irq = platform_get_irq_byname(pdev, "bd70528-rtc-alm");
-
-	if (irq < 0) {
-		dev_err(&pdev->dev, "Failed to get irq\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	platform_set_drvdata(pdev, bd_rtc);
 
@@ -479,11 +476,7 @@ static int bd70528_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = rtc_register_device(rtc);
-	if (ret)
-		dev_err(&pdev->dev, "Registering RTC failed\n");
-
-	return ret;
+	return rtc_register_device(rtc);
 }
 
 static struct platform_driver bd70528_rtc = {
diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c
index 2f65943867f5..3e9800f9878a 100644
--- a/drivers/rtc/rtc-brcmstb-waketimer.c
+++ b/drivers/rtc/rtc-brcmstb-waketimer.c
@@ -255,10 +255,8 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev)
 	timer->rtc->range_max = U32_MAX;
 
 	ret = rtc_register_device(timer->rtc);
-	if (ret) {
-		dev_err(dev, "unable to register device\n");
+	if (ret)
 		goto err_notifier;
-	}
 
 	dev_info(dev, "registered, with irq %d\n", timer->irq);
 
diff --git a/drivers/rtc/rtc-cadence.c b/drivers/rtc/rtc-cadence.c
index 3b7d643c8a63..592aae23cbaf 100644
--- a/drivers/rtc/rtc-cadence.c
+++ b/drivers/rtc/rtc-cadence.c
@@ -289,12 +289,8 @@ static int cdns_rtc_probe(struct platform_device *pdev)
 	}
 
 	crtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
-	if (IS_ERR(crtc->rtc_dev)) {
-		ret = PTR_ERR(crtc->rtc_dev);
-		dev_err(&pdev->dev,
-			"Failed to allocate the RTC device, %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(crtc->rtc_dev))
+		return PTR_ERR(crtc->rtc_dev);
 
 	platform_set_drvdata(pdev, crtc);
 
@@ -343,11 +339,8 @@ static int cdns_rtc_probe(struct platform_device *pdev)
 	writel(CDNS_RTC_KRTCR_KRTC, crtc->regs + CDNS_RTC_KRTCR);
 
 	ret = rtc_register_device(crtc->rtc_dev);
-	if (ret) {
-		dev_err(&pdev->dev,
-			"Failed to register the RTC device, %d\n", ret);
+	if (ret)
 		goto err_disable_wakeup;
-	}
 
 	return 0;
 
diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index fcb71bf4d492..d8e0db2e7fc6 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -477,10 +477,8 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	davinci_rtc->irq = platform_get_irq(pdev, 0);
-	if (davinci_rtc->irq < 0) {
-		dev_err(dev, "no RTC irq\n");
+	if (davinci_rtc->irq < 0)
 		return davinci_rtc->irq;
-	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	davinci_rtc->base = devm_ioremap_resource(dev, res);
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index e04d6e862c42..4420fbf2f8fe 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -690,19 +690,16 @@ static int ds1305_probe(struct spi_device *spi)
 
 	/* register RTC ... from here on, ds1305->ctrl needs locking */
 	ds1305->rtc = devm_rtc_allocate_device(&spi->dev);
-	if (IS_ERR(ds1305->rtc)) {
+	if (IS_ERR(ds1305->rtc))
 		return PTR_ERR(ds1305->rtc);
-	}
 
 	ds1305->rtc->ops = &ds1305_ops;
 
 	ds1305_nvmem_cfg.priv = ds1305;
 	ds1305->rtc