rtc: remove rtc-at32ap700x

Since PLATFORM_AT32AP is an AVR32 platform which was removed, the
rtc driver rtc-at32ap700x is useless.
This patch remove it.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

3 files changed, 0 insertions, 295 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index b71cc7b5fbc9..8ab5f0a5d323 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1402,13 +1402,6 @@ config RTC_DRV_PL031
           To compile this driver as a module, choose M here: the
           module will be called rtc-pl031.
 
-config RTC_DRV_AT32AP700X
-        tristate "AT32AP700X series RTC"
-        depends on PLATFORM_AT32AP || COMPILE_TEST
-        help
-          Driver for the internal RTC (Realtime Clock) on Atmel AVR32
-          AT32AP700x family processors.
-
 config RTC_DRV_AT91RM9200
         tristate "AT91RM9200 or some AT91SAM9 RTC"
         depends on ARCH_AT91 || COMPILE_TEST
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 6dfbbe9cd8a2..4fbf87e45a7c 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -33,7 +33,6 @@ obj-$(CONFIG_RTC_DRV_AC100)	+= rtc-ac100.o
 obj-$(CONFIG_RTC_DRV_ARMADA38X) += rtc-armada38x.o
 obj-$(CONFIG_RTC_DRV_AS3722)    += rtc-as3722.o
 obj-$(CONFIG_RTC_DRV_ASM9260)   += rtc-asm9260.o
-obj-$(CONFIG_RTC_DRV_AT32AP700X)+= rtc-at32ap700x.o
 obj-$(CONFIG_RTC_DRV_AT91RM9200)+= rtc-at91rm9200.o
 obj-$(CONFIG_RTC_DRV_AT91SAM9)  += rtc-at91sam9.o
 obj-$(CONFIG_RTC_DRV_AU1XXX)    += rtc-au1xxx.o
diff --git a/drivers/rtc/rtc-at32ap700x.c b/drivers/rtc/rtc-at32ap700x.c
deleted file mode 100644
index de8bf56a41e7..000000000000
--- a/drivers/rtc/rtc-at32ap700x.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * An RTC driver for the AVR32 AT32AP700x processor series.
- *
- * Copyright (C) 2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/rtc.h>
-#include <linux/io.h>
-
-/*
- * This is a bare-bones RTC. It runs during most system sleep states, but has
- * no battery backup and gets reset during system restart.  It must be
- * initialized from an external clock (network, I2C, etc) before it can be of
- * much use.
- *
- * The alarm functionality is limited by the hardware, not supporting
- * periodic interrupts.
- */
-
-#define RTC_CTRL                0x00
-#define RTC_CTRL_EN                0
-#define RTC_CTRL_PCLR              1
-#define RTC_CTRL_TOPEN             2
-#define RTC_CTRL_PSEL              8
-
-#define RTC_VAL                 0x04
-
-#define RTC_TOP                 0x08
-
-#define RTC_IER                 0x10
-#define RTC_IER_TOPI               0
-
-#define RTC_IDR                 0x14
-#define RTC_IDR_TOPI               0
-
-#define RTC_IMR                 0x18
-#define RTC_IMR_TOPI               0
-
-#define RTC_ISR                 0x1c
-#define RTC_ISR_TOPI               0
-
-#define RTC_ICR                 0x20
-#define RTC_ICR_TOPI               0
-
-#define RTC_BIT(name)           (1 << RTC_##name)
-#define RTC_BF(name, value)     ((value) << RTC_##name)
-
-#define rtc_readl(dev, reg)                             \
-        __raw_readl((dev)->regs + RTC_##reg)
-#define rtc_writel(dev, reg, value)                     \
-        __raw_writel((value), (dev)->regs + RTC_##reg)
-
-struct rtc_at32ap700x {
-        struct rtc_device       *rtc;
-        void __iomem            *regs;
-        unsigned long           alarm_time;
-        unsigned long           irq;
-        /* Protect against concurrent register access. */
-        spinlock_t              lock;
-};
-
-static int at32_rtc_readtime(struct device *dev, struct rtc_time *tm)
-{
-        struct rtc_at32ap700x *rtc = dev_get_drvdata(dev);
-        unsigned long now;
-
-        now = rtc_readl(rtc, VAL);
-        rtc_time_to_tm(now, tm);
-
-        return 0;
-}
-
-static int at32_rtc_settime(struct device *dev, struct rtc_time *tm)
-{
-        struct rtc_at32ap700x *rtc = dev_get_drvdata(dev);
-        unsigned long now;
-        int ret;
-
-        ret = rtc_tm_to_time(tm, &now);
-        if (ret == 0)
-                rtc_writel(rtc, VAL, now);
-
-        return ret;
-}
-
-static int at32_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
-        struct rtc_at32ap700x *rtc = dev_get_drvdata(dev);
-
-        spin_lock_irq(&rtc->lock);
-        rtc_time_to_tm(rtc->alarm_time, &alrm->time);
-        alrm->enabled = rtc_readl(rtc, IMR) & RTC_BIT(IMR_TOPI) ? 1 : 0;
-        alrm->pending = rtc_readl(rtc, ISR) & RTC_BIT(ISR_TOPI) ? 1 : 0;
-        spin_unlock_irq(&rtc->lock);
-
-        return 0;
-}
-
-static int at32_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
-        struct rtc_at32ap700x *rtc = dev_get_drvdata(dev);
-        unsigned long rtc_unix_time;
-        unsigned long alarm_unix_time;
-        int ret;
-
-        rtc_unix_time = rtc_readl(rtc, VAL);
-
-        ret = rtc_tm_to_time(&alrm->time, &alarm_unix_time);
-        if (ret)
-                return ret;
-
-        if (alarm_unix_time < rtc_unix_time)
-                return -EINVAL;
-
-        spin_lock_irq(&rtc->lock);
-        rtc->alarm_time = alarm_unix_time;
-        rtc_writel(rtc, TOP, rtc->alarm_time);
-        if (alrm->enabled)
-                rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL)
-                                | RTC_BIT(CTRL_TOPEN));
-        else
-                rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL)
-                                & ~RTC_BIT(CTRL_TOPEN));
-        spin_unlock_irq(&rtc->lock);
-
-        return ret;
-}
-
-static int at32_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
-{
-        struct rtc_at32ap700x *rtc = dev_get_drvdata(dev);
-        int ret = 0;
-
-        spin_lock_irq(&rtc->lock);
-
-        if (enabled) {
-                if (rtc_readl(rtc, VAL) > rtc->alarm_time) {
-                        ret = -EINVAL;
-                        goto out;
-                }
-                rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL)
-                                | RTC_BIT(CTRL_TOPEN));
-                rtc_writel(rtc, ICR, RTC_BIT(ICR_TOPI));
-                rtc_writel(rtc, IER, RTC_BIT(IER_TOPI));
-        } else {
-                rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL)
-                                & ~RTC_BIT(CTRL_TOPEN));
-                rtc_writel(rtc, IDR, RTC_BIT(IDR_TOPI));
-                rtc_writel(rtc, ICR, RTC_BIT(ICR_TOPI));
-        }
-out:
-        spin_unlock_irq(&rtc->lock);
-
-        return ret;
-}
-
-static irqreturn_t at32_rtc_interrupt(int irq, void *dev_id)
-{
-        struct rtc_at32ap700x *rtc = (struct rtc_at32ap700x *)dev_id;
-        unsigned long isr = rtc_readl(rtc, ISR);
-        unsigned long events = 0;
-        int ret = IRQ_NONE;
-
-        spin_lock(&rtc->lock);
-
-        if (isr & RTC_BIT(ISR_TOPI)) {
-                rtc_writel(rtc, ICR, RTC_BIT(ICR_TOPI));
-                rtc_writel(rtc, IDR, RTC_BIT(IDR_TOPI));
-                rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL)
-                                & ~RTC_BIT(CTRL_TOPEN));
-                rtc_writel(rtc, VAL, rtc->alarm_time);
-                events = RTC_AF | RTC_IRQF;
-                rtc_update_irq(rtc->rtc, 1, events);
-                ret = IRQ_HANDLED;
-        }
-
-        spin_unlock(&rtc->lock);
-
-        return ret;
-}
-
-static const struct rtc_class_ops at32_rtc_ops = {
-        .read_time      = at32_rtc_readtime,
-        .set_time       = at32_rtc_settime,
-        .read_alarm     = at32_rtc_readalarm,
-        .set_alarm      = at32_rtc_setalarm,
-        .alarm_irq_enable = at32_rtc_alarm_irq_enable,
-};
-
-static int __init at32_rtc_probe(struct platform_device *pdev)
-{
-        struct resource *regs;
-        struct rtc_at32ap700x *rtc;
-        int irq;
-        int ret;
-
-        rtc = devm_kzalloc(&pdev->dev, sizeof(struct rtc_at32ap700x),
-                           GFP_KERNEL);
-        if (!rtc)
-                return -ENOMEM;
-
-        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!regs) {
-                dev_dbg(&pdev->dev, "no mmio resource defined\n");
-                return -ENXIO;
-        }
-
-        irq = platform_get_irq(pdev, 0);
-        if (irq <= 0) {
-                dev_dbg(&pdev->dev, "could not get irq\n");
-                return -ENXIO;
-        }
-
-        rtc->irq = irq;
-        rtc->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
-        if (!rtc->regs) {
-                dev_dbg(&pdev->dev, "could not map I/O memory\n");
-                return -ENOMEM;
-        }
-        spin_lock_init(&rtc->lock);
-
-        /*
-         * Maybe init RTC: count from zero at 1 Hz, disable wrap irq.
-         *
-         * Do not reset VAL register, as it can hold an old time
-         * from last JTAG reset.
-         */
-        if (!(rtc_readl(rtc, CTRL) & RTC_BIT(CTRL_EN))) {
-                rtc_writel(rtc, CTRL, RTC_BIT(CTRL_PCLR));
-                rtc_writel(rtc, IDR, RTC_BIT(IDR_TOPI));
-                rtc_writel(rtc, CTRL, RTC_BF(CTRL_PSEL, 0xe)
-                                | RTC_BIT(CTRL_EN));
-        }
-
-        ret = devm_request_irq(&pdev->dev, irq, at32_rtc_interrupt, IRQF_SHARED,
-                                "rtc", rtc);
-        if (ret) {
-                dev_dbg(&pdev->dev, "could not request irq %d\n", irq);
-                return ret;
-        }
-
-        platform_set_drvdata(pdev, rtc);
-
-        rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
-                                &at32_rtc_ops, THIS_MODULE);
-        if (IS_ERR(rtc->rtc)) {
-                dev_dbg(&pdev->dev, "could not register rtc device\n");
-                return PTR_ERR(rtc->rtc);
-        }
-
-        device_init_wakeup(&pdev->dev, 1);
-
-        dev_info(&pdev->dev, "Atmel RTC for AT32AP700x at %08lx irq %ld\n",
-                        (unsigned long)rtc->regs, rtc->irq);
-
-        return 0;
-}
-
-static int __exit at32_rtc_remove(struct platform_device *pdev)
-{
-        device_init_wakeup(&pdev->dev, 0);
-
-        return 0;
-}
-
-MODULE_ALIAS("platform:at32ap700x_rtc");
-
-static struct platform_driver at32_rtc_driver = {
-        .remove         = __exit_p(at32_rtc_remove),
-        .driver         = {
-                .name   = "at32ap700x_rtc",
-        },
-};
-
-module_platform_driver_probe(at32_rtc_driver, at32_rtc_probe);
-
-MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
-MODULE_DESCRIPTION("Real time clock for AVR32 AT32AP700x");
-MODULE_LICENSE("GPL");