rtc: remove unused pcap driver

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>
Link: https://patch.msgid.link/20260527193927.3523952-1-arnd@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 364afc73f8abd2ade7e7570ba59c0f1aa0bbe78e..01def82318731cc8b74d7c30f5171683352c5a3e 100644 (file)
--- 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 6cf7e066314e13c18c1ae0e284edbb16c1bd37e4..0347645b021f8f7c05786eecb2e07acc979573dc 100644 (file)
--- 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 (file)
index d665161..0000000
--- 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");