[PATCH] rtc: remove unused pcap driver

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

The platform was removed a few years ago, and the mfd driver
is also gone now, so it is impossible to build or use it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/rtc/Kconfig    |   7 --
 drivers/rtc/Makefile   |   1 -
 drivers/rtc/rtc-pcap.c | 179 -----------------------------------------
 3 files changed, 187 deletions(-)
 delete mode 100644 drivers/rtc/rtc-pcap.c

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 364afc73f8ab..01def8231873 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1763,13 +1763,6 @@ config RTC_DRV_STMP
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-stmp3xxx.
 
-config RTC_DRV_PCAP
-	tristate "PCAP RTC"
-	depends on EZX_PCAP
-	help
-	  If you say Y here you will get support for the RTC found on
-	  the PCAP2 ASIC used on some Motorola phones.
-
 config RTC_DRV_MC13XXX
 	depends on MFD_MC13XXX
 	tristate "Freescale MC13xxx RTC"
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 6cf7e066314e..0347645b021f 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -128,7 +128,6 @@ obj-$(CONFIG_RTC_DRV_OMAP)	+= rtc-omap.o
 obj-$(CONFIG_RTC_DRV_OPAL)	+= rtc-opal.o
 obj-$(CONFIG_RTC_DRV_OPTEE)	+= rtc-optee.o
 obj-$(CONFIG_RTC_DRV_PALMAS)	+= rtc-palmas.o
-obj-$(CONFIG_RTC_DRV_PCAP)	+= rtc-pcap.o
 obj-$(CONFIG_RTC_DRV_PCF2123)	+= rtc-pcf2123.o
 obj-$(CONFIG_RTC_DRV_PCF2127)	+= rtc-pcf2127.o
 obj-$(CONFIG_RTC_DRV_PCF85063)	+= rtc-pcf85063.o
diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c
deleted file mode 100644
index d6651611a0c6..000000000000
--- a/drivers/rtc/rtc-pcap.c
+++ /dev/null
@@ -1,179 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  pcap rtc code for Motorola EZX phones
- *
- *  Copyright (c) 2008 guiming zhuo <gmzhuo@gmail.com>
- *  Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com>
- *
- *  Based on Motorola's rtc.c Copyright (c) 2003-2005 Motorola
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/mfd/ezx-pcap.h>
-#include <linux/rtc.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-
-struct pcap_rtc {
-	struct pcap_chip *pcap;
-	struct rtc_device *rtc;
-};
-
-static irqreturn_t pcap_rtc_irq(int irq, void *_pcap_rtc)
-{
-	struct pcap_rtc *pcap_rtc = _pcap_rtc;
-	unsigned long rtc_events;
-
-	if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ))
-		rtc_events = RTC_IRQF | RTC_UF;
-	else if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA))
-		rtc_events = RTC_IRQF | RTC_AF;
-	else
-		rtc_events = 0;
-
-	rtc_update_irq(pcap_rtc->rtc, 1, rtc_events);
-	return IRQ_HANDLED;
-}
-
-static int pcap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
-	struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
-	struct rtc_time *tm = &alrm->time;
-	unsigned long secs;
-	u32 tod;	/* time of day, seconds since midnight */
-	u32 days;	/* days since 1/1/1970 */
-
-	ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_TODA, &tod);
-	secs = tod & PCAP_RTC_TOD_MASK;
-
-	ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_DAYA, &days);
-	secs += (days & PCAP_RTC_DAY_MASK) * SEC_PER_DAY;
-
-	rtc_time64_to_tm(secs, tm);
-
-	return 0;
-}
-
-static int pcap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
-	struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
-	unsigned long secs = rtc_tm_to_time64(&alrm->time);
-	u32 tod, days;
-
-	tod = secs % SEC_PER_DAY;
-	ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_TODA, tod);
-
-	days = secs / SEC_PER_DAY;
-	ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_DAYA, days);
-
-	return 0;
-}
-
-static int pcap_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
-	struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
-	unsigned long secs;
-	u32 tod, days;
-
-	ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_TOD, &tod);
-	secs = tod & PCAP_RTC_TOD_MASK;
-
-	ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_DAY, &days);
-	secs += (days & PCAP_RTC_DAY_MASK) * SEC_PER_DAY;
-
-	rtc_time64_to_tm(secs, tm);
-
-	return 0;
-}
-
-static int pcap_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
-	struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
-	unsigned long secs = rtc_tm_to_time64(tm);
-	u32 tod, days;
-
-	tod = secs % SEC_PER_DAY;
-	ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_TOD, tod);
-
-	days = secs / SEC_PER_DAY;
-	ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_DAY, days);
-
-	return 0;
-}
-
-static int pcap_rtc_irq_enable(struct device *dev, int pirq, unsigned int en)
-{
-	struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
-
-	if (en)
-		enable_irq(pcap_to_irq(pcap_rtc->pcap, pirq));
-	else
-		disable_irq(pcap_to_irq(pcap_rtc->pcap, pirq));
-
-	return 0;
-}
-
-static int pcap_rtc_alarm_irq_enable(struct device *dev, unsigned int en)
-{
-	return pcap_rtc_irq_enable(dev, PCAP_IRQ_TODA, en);
-}
-
-static const struct rtc_class_ops pcap_rtc_ops = {
-	.read_time = pcap_rtc_read_time,
-	.set_time = pcap_rtc_set_time,
-	.read_alarm = pcap_rtc_read_alarm,
-	.set_alarm = pcap_rtc_set_alarm,
-	.alarm_irq_enable = pcap_rtc_alarm_irq_enable,
-};
-
-static int __init pcap_rtc_probe(struct platform_device *pdev)
-{
-	struct pcap_rtc *pcap_rtc;
-	int timer_irq, alarm_irq;
-	int err = -ENOMEM;
-
-	pcap_rtc = devm_kzalloc(&pdev->dev, sizeof(struct pcap_rtc),
-				GFP_KERNEL);
-	if (!pcap_rtc)
-		return err;
-
-	pcap_rtc->pcap = dev_get_drvdata(pdev->dev.parent);
-
-	platform_set_drvdata(pdev, pcap_rtc);
-
-	pcap_rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
-	if (IS_ERR(pcap_rtc->rtc))
-		return PTR_ERR(pcap_rtc->rtc);
-
-	pcap_rtc->rtc->ops = &pcap_rtc_ops;
-	pcap_rtc->rtc->range_max = (1 << 14) * 86400ULL - 1;
-
-	timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ);
-	alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA);
-
-	err = devm_request_irq(&pdev->dev, timer_irq, pcap_rtc_irq, 0,
-				"RTC Timer", pcap_rtc);
-	if (err)
-		return err;
-
-	err = devm_request_irq(&pdev->dev, alarm_irq, pcap_rtc_irq, 0,
-				"RTC Alarm", pcap_rtc);
-	if (err)
-		return err;
-
-	return devm_rtc_register_device(pcap_rtc->rtc);
-}
-
-static struct platform_driver pcap_rtc_driver = {
-	.driver = {
-		.name  = "pcap-rtc",
-	},
-};
-
-module_platform_driver_probe(pcap_rtc_driver, pcap_rtc_probe);
-
-MODULE_DESCRIPTION("Motorola pcap rtc driver");
-MODULE_AUTHOR("guiming zhuo <gmzhuo@gmail.com>");
-MODULE_LICENSE("GPL");
-- 
2.39.5