CPU support for TX49xx is getting removed, so remove rtc driver for it.

Signed-off-by: Thomas Bogendoerfer <tsbog...@alpha.franken.de>
---
 drivers/rtc/Kconfig      |   7 -
 drivers/rtc/Makefile     |   1 -
 drivers/rtc/rtc-tx4939.c | 303 ---------------------------------------
 3 files changed, 311 deletions(-)
 delete mode 100644 drivers/rtc/rtc-tx4939.c

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 6123f9f4fbc9..3b5510c9bffa 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1587,13 +1587,6 @@ config RTC_DRV_STARFIRE
          If you say Y here you will get support for the RTC found on
          Starfire systems.
 
-config RTC_DRV_TX4939
-       tristate "TX4939 SoC"
-       depends on SOC_TX4939 || COMPILE_TEST
-       help
-         Driver for the internal RTC (Realtime Clock) module found on
-         Toshiba TX4939 SoC.
-
 config RTC_DRV_MV
        tristate "Marvell SoC RTC"
        depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index bb8f319b09fb..a020adde4bbd 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -171,7 +171,6 @@ obj-$(CONFIG_RTC_DRV_TPS6586X)      += rtc-tps6586x.o
 obj-$(CONFIG_RTC_DRV_TPS65910) += rtc-tps65910.o
 obj-$(CONFIG_RTC_DRV_TPS80031) += rtc-tps80031.o
 obj-$(CONFIG_RTC_DRV_TWL4030)  += rtc-twl.o
-obj-$(CONFIG_RTC_DRV_TX4939)   += rtc-tx4939.o
 obj-$(CONFIG_RTC_DRV_V3020)    += rtc-v3020.o
 obj-$(CONFIG_RTC_DRV_VR41XX)   += rtc-vr41xx.o
 obj-$(CONFIG_RTC_DRV_VRTC)     += rtc-mrst.o
diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c
deleted file mode 100644
index c3309db5448d..000000000000
--- a/drivers/rtc/rtc-tx4939.c
+++ /dev/null
@@ -1,303 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * TX4939 internal RTC driver
- * Based on RBTX49xx patch from CELF patch archive.
- *
- * (C) Copyright TOSHIBA CORPORATION 2005-2007
- */
-#include <linux/rtc.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/gfp.h>
-
-#define TX4939_RTCCTL_ALME     0x00000080
-#define TX4939_RTCCTL_ALMD     0x00000040
-#define TX4939_RTCCTL_BUSY     0x00000020
-
-#define TX4939_RTCCTL_COMMAND  0x00000007
-#define TX4939_RTCCTL_COMMAND_NOP      0x00000000
-#define TX4939_RTCCTL_COMMAND_GETTIME  0x00000001
-#define TX4939_RTCCTL_COMMAND_SETTIME  0x00000002
-#define TX4939_RTCCTL_COMMAND_GETALARM 0x00000003
-#define TX4939_RTCCTL_COMMAND_SETALARM 0x00000004
-
-#define TX4939_RTCTBC_PM       0x00000080
-#define TX4939_RTCTBC_COMP     0x0000007f
-
-#define TX4939_RTC_REG_RAMSIZE 0x00000100
-#define TX4939_RTC_REG_RWBSIZE 0x00000006
-
-struct tx4939_rtc_reg {
-       __u32 ctl;
-       __u32 adr;
-       __u32 dat;
-       __u32 tbc;
-};
-
-struct tx4939rtc_plat_data {
-       struct rtc_device *rtc;
-       struct tx4939_rtc_reg __iomem *rtcreg;
-       spinlock_t lock;
-};
-
-static int tx4939_rtc_cmd(struct tx4939_rtc_reg __iomem *rtcreg, int cmd)
-{
-       int i = 0;
-
-       __raw_writel(cmd, &rtcreg->ctl);
-       /* This might take 30us (next 32.768KHz clock) */
-       while (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_BUSY) {
-               /* timeout on approx. 100us (@ GBUS200MHz) */
-               if (i++ > 200 * 100)
-                       return -EBUSY;
-               cpu_relax();
-       }
-       return 0;
-}
-
-static int tx4939_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
-       struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       unsigned long secs = rtc_tm_to_time64(tm);
-       int i, ret;
-       unsigned char buf[6];
-
-       buf[0] = 0;
-       buf[1] = 0;
-       buf[2] = secs;
-       buf[3] = secs >> 8;
-       buf[4] = secs >> 16;
-       buf[5] = secs >> 24;
-       spin_lock_irq(&pdata->lock);
-       __raw_writel(0, &rtcreg->adr);
-       for (i = 0; i < 6; i++)
-               __raw_writel(buf[i], &rtcreg->dat);
-       ret = tx4939_rtc_cmd(rtcreg,
-                            TX4939_RTCCTL_COMMAND_SETTIME |
-                            (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALME));
-       spin_unlock_irq(&pdata->lock);
-       return ret;
-}
-
-static int tx4939_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
-       struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       int i, ret;
-       unsigned long sec;
-       unsigned char buf[6];
-
-       spin_lock_irq(&pdata->lock);
-       ret = tx4939_rtc_cmd(rtcreg,
-                            TX4939_RTCCTL_COMMAND_GETTIME |
-                            (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALME));
-       if (ret) {
-               spin_unlock_irq(&pdata->lock);
-               return ret;
-       }
-       __raw_writel(2, &rtcreg->adr);
-       for (i = 2; i < 6; i++)
-               buf[i] = __raw_readl(&rtcreg->dat);
-       spin_unlock_irq(&pdata->lock);
-       sec = ((unsigned long)buf[5] << 24) | (buf[4] << 16) |
-               (buf[3] << 8) | buf[2];
-       rtc_time64_to_tm(sec, tm);
-       return 0;
-}
-
-static int tx4939_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
-       struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       int i, ret;
-       unsigned long sec;
-       unsigned char buf[6];
-
-       sec = rtc_tm_to_time64(&alrm->time);
-       buf[0] = 0;
-       buf[1] = 0;
-       buf[2] = sec;
-       buf[3] = sec >> 8;
-       buf[4] = sec >> 16;
-       buf[5] = sec >> 24;
-       spin_lock_irq(&pdata->lock);
-       __raw_writel(0, &rtcreg->adr);
-       for (i = 0; i < 6; i++)
-               __raw_writel(buf[i], &rtcreg->dat);
-       ret = tx4939_rtc_cmd(rtcreg, TX4939_RTCCTL_COMMAND_SETALARM |
-                            (alrm->enabled ? TX4939_RTCCTL_ALME : 0));
-       spin_unlock_irq(&pdata->lock);
-       return ret;
-}
-
-static int tx4939_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
-       struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       int i, ret;
-       unsigned long sec;
-       unsigned char buf[6];
-       u32 ctl;
-
-       spin_lock_irq(&pdata->lock);
-       ret = tx4939_rtc_cmd(rtcreg,
-                            TX4939_RTCCTL_COMMAND_GETALARM |
-                            (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALME));
-       if (ret) {
-               spin_unlock_irq(&pdata->lock);
-               return ret;
-       }
-       __raw_writel(2, &rtcreg->adr);
-       for (i = 2; i < 6; i++)
-               buf[i] = __raw_readl(&rtcreg->dat);
-       ctl = __raw_readl(&rtcreg->ctl);
-       alrm->enabled = (ctl & TX4939_RTCCTL_ALME) ? 1 : 0;
-       alrm->pending = (ctl & TX4939_RTCCTL_ALMD) ? 1 : 0;
-       spin_unlock_irq(&pdata->lock);
-       sec = ((unsigned long)buf[5] << 24) | (buf[4] << 16) |
-               (buf[3] << 8) | buf[2];
-       rtc_time64_to_tm(sec, &alrm->time);
-       return rtc_valid_tm(&alrm->time);
-}
-
-static int tx4939_rtc_alarm_irq_enable(struct device *dev, unsigned int 
enabled)
-{
-       struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
-
-       spin_lock_irq(&pdata->lock);
-       tx4939_rtc_cmd(pdata->rtcreg,
-                      TX4939_RTCCTL_COMMAND_NOP |
-                      (enabled ? TX4939_RTCCTL_ALME : 0));
-       spin_unlock_irq(&pdata->lock);
-       return 0;
-}
-
-static irqreturn_t tx4939_rtc_interrupt(int irq, void *dev_id)
-{
-       struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev_id);
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       unsigned long events = RTC_IRQF;
-
-       spin_lock(&pdata->lock);
-       if (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALMD) {
-               events |= RTC_AF;
-               tx4939_rtc_cmd(rtcreg, TX4939_RTCCTL_COMMAND_NOP);
-       }
-       spin_unlock(&pdata->lock);
-       rtc_update_irq(pdata->rtc, 1, events);
-
-       return IRQ_HANDLED;
-}
-
-static const struct rtc_class_ops tx4939_rtc_ops = {
-       .read_time              = tx4939_rtc_read_time,
-       .read_alarm             = tx4939_rtc_read_alarm,
-       .set_alarm              = tx4939_rtc_set_alarm,
-       .set_time               = tx4939_rtc_set_time,
-       .alarm_irq_enable       = tx4939_rtc_alarm_irq_enable,
-};
-
-static int tx4939_nvram_read(void *priv, unsigned int pos, void *val,
-                            size_t bytes)
-{
-       struct tx4939rtc_plat_data *pdata = priv;
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       u8 *buf = val;
-
-       spin_lock_irq(&pdata->lock);
-       for (; bytes; bytes--) {
-               __raw_writel(pos++, &rtcreg->adr);
-               *buf++ = __raw_readl(&rtcreg->dat);
-       }
-       spin_unlock_irq(&pdata->lock);
-       return 0;
-}
-
-static int tx4939_nvram_write(void *priv, unsigned int pos, void *val,
-                             size_t bytes)
-{
-       struct tx4939rtc_plat_data *pdata = priv;
-       struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
-       u8 *buf = val;
-
-       spin_lock_irq(&pdata->lock);
-       for (; bytes; bytes--) {
-               __raw_writel(pos++, &rtcreg->adr);
-               __raw_writel(*buf++, &rtcreg->dat);
-       }
-       spin_unlock_irq(&pdata->lock);
-       return 0;
-}
-
-static int __init tx4939_rtc_probe(struct platform_device *pdev)
-{
-       struct rtc_device *rtc;
-       struct tx4939rtc_plat_data *pdata;
-       int irq, ret;
-       struct nvmem_config nvmem_cfg = {
-               .name = "tx4939_nvram",
-               .size = TX4939_RTC_REG_RAMSIZE,
-               .reg_read = tx4939_nvram_read,
-               .reg_write = tx4939_nvram_write,
-       };
-
-       irq = platform_get_irq(pdev, 0);
-       if (irq < 0)
-               return -ENODEV;
-       pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
-       if (!pdata)
-               return -ENOMEM;
-       platform_set_drvdata(pdev, pdata);
-
-       pdata->rtcreg = devm_platform_ioremap_resource(pdev, 0);
-       if (IS_ERR(pdata->rtcreg))
-               return PTR_ERR(pdata->rtcreg);
-
-       spin_lock_init(&pdata->lock);
-       tx4939_rtc_cmd(pdata->rtcreg, TX4939_RTCCTL_COMMAND_NOP);
-       if (devm_request_irq(&pdev->dev, irq, tx4939_rtc_interrupt,
-                            0, pdev->name, &pdev->dev) < 0)
-               return -EBUSY;
-       rtc = devm_rtc_allocate_device(&pdev->dev);
-       if (IS_ERR(rtc))
-               return PTR_ERR(rtc);
-
-       rtc->ops = &tx4939_rtc_ops;
-       rtc->range_max = U32_MAX;
-
-       pdata->rtc = rtc;
-
-       nvmem_cfg.priv = pdata;
-       ret = devm_rtc_nvmem_register(rtc, &nvmem_cfg);
-       if (ret)
-               return ret;
-
-       return devm_rtc_register_device(rtc);
-}
-
-static int __exit tx4939_rtc_remove(struct platform_device *pdev)
-{
-       struct tx4939rtc_plat_data *pdata = platform_get_drvdata(pdev);
-
-       spin_lock_irq(&pdata->lock);
-       tx4939_rtc_cmd(pdata->rtcreg, TX4939_RTCCTL_COMMAND_NOP);
-       spin_unlock_irq(&pdata->lock);
-       return 0;
-}
-
-static struct platform_driver tx4939_rtc_driver = {
-       .remove         = __exit_p(tx4939_rtc_remove),
-       .driver         = {
-               .name   = "tx4939rtc",
-       },
-};
-
-module_platform_driver_probe(tx4939_rtc_driver, tx4939_rtc_probe);
-
-MODULE_AUTHOR("Atsushi Nemoto <an...@mba.ocn.ne.jp>");
-MODULE_DESCRIPTION("TX4939 internal RTC driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:tx4939rtc");
-- 
2.29.2

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