ARM: at91: remove useless at91_sysirq_mask_rtx

The irq fixup from at91_sysirq_mask_rtc and at91_sysirq_mask_rtt is now handled
by aic_common_rtc_irq_fixup and aic_common_rtt_irq_fixup. Remove those useless
functions.
Also remove the now unused mach/at91_rtt.h header.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

1 files changed, 0 insertions, 75 deletions

diff --git a/arch/arm/mach-at91/sysirq_mask.c b/arch/arm/mach-at91/sysirq_mask.c
deleted file mode 100644
index f8bc3511a8c8..000000000000
--- a/arch/arm/mach-at91/sysirq_mask.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * sysirq_mask.c - System-interrupt masking
- *
- * Copyright (C) 2013 Johan Hovold <jhovold@gmail.com>
- *
- * Functions to disable system interrupts from backup-powered peripherals.
- *
- * The RTC and RTT-peripherals are generally powered by backup power (VDDBU)
- * and are not reset on wake-up, user, watchdog or software reset. This means
- * that their interrupts may be enabled during early boot (e.g. after a user
- * reset).
- *
- * As the RTC and RTT share the system-interrupt line with the PIT, an
- * interrupt occurring before a handler has been installed would lead to the
- * system interrupt being disabled and prevent the system from booting.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/io.h>
-#include <mach/at91_rtt.h>
-
-#include "generic.h"
-
-#define AT91_RTC_IDR		0x24	/* Interrupt Disable Register */
-#define AT91_RTC_IMR		0x28	/* Interrupt Mask Register */
-#define AT91_RTC_IRQ_MASK	0x1f	/* Available IRQs mask */
-
-void __init at91_sysirq_mask_rtc(u32 rtc_base)
-{
-	void __iomem *base;
-
-	base = ioremap(rtc_base, 64);
-	if (!base)
-		return;
-
-	/*
-	 * sam9x5 SoCs have the following errata:
-	 * "RTC: Interrupt Mask Register cannot be used
-	 *  Interrupt Mask Register read always returns 0."
-	 *
-	 * Hence we're not relying on IMR values to disable
-	 * interrupts.
-	 */
-	writel_relaxed(AT91_RTC_IRQ_MASK, base + AT91_RTC_IDR);
-	(void)readl_relaxed(base + AT91_RTC_IMR);	/* flush */
-
-	iounmap(base);
-}
-
-void __init at91_sysirq_mask_rtt(u32 rtt_base)
-{
-	void __iomem *base;
-	void __iomem *reg;
-	u32 mode;
-
-	base = ioremap(rtt_base, 16);
-	if (!base)
-		return;
-
-	reg = base + AT91_RTT_MR;
-
-	mode = readl_relaxed(reg);
-	if (mode & (AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN)) {
-		pr_info("AT91: Disabling rtt irq\n");
-		mode &= ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);
-		writel_relaxed(mode, reg);
-		(void)readl_relaxed(reg);			/* flush */
-	}
-
-	iounmap(base);
-}