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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>
This commit is contained in:
Alexandre Belloni 2015-01-12 19:42:13 +01:00 committed by Nicolas Ferre
parent c46317b774
commit 415c947435
12 changed files with 1 additions and 150 deletions
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2
arch/arm/mach-at91/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
obj-y := setup.o sysirq_mask.o
obj-y := setup.o
obj-$(CONFIG_SOC_AT91SAM9) += sam9_smc.o

2
arch/arm/mach-at91/at91sam9260.c
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@ -51,8 +51,6 @@ static void __init at91sam9260_map_io(void)
static void __init at91sam9260_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtt(AT91SAM9260_BASE_RTT);
}
AT91_SOC_START(at91sam9260)

2
arch/arm/mach-at91/at91sam9261.c
View File

@ -32,8 +32,6 @@ static void __init at91sam9261_map_io(void)
static void __init at91sam9261_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtt(AT91SAM9261_BASE_RTT);
}
AT91_SOC_START(at91sam9261)

3
arch/arm/mach-at91/at91sam9263.c
View File

@ -29,9 +29,6 @@ static void __init at91sam9263_map_io(void)
static void __init at91sam9263_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT0);
at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT1);
}
AT91_SOC_START(at91sam9263)

3
arch/arm/mach-at91/at91sam9g45.c
View File

@ -28,9 +28,6 @@ static void __init at91sam9g45_map_io(void)
static void __init at91sam9g45_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtc(AT91SAM9G45_BASE_RTC);
at91_sysirq_mask_rtt(AT91SAM9G45_BASE_RTT);
}
AT91_SOC_START(at91sam9g45)

6
arch/arm/mach-at91/at91sam9n12.c
View File

@ -21,12 +21,6 @@ static void __init at91sam9n12_map_io(void)
at91_init_sram(0, AT91SAM9N12_SRAM_BASE, AT91SAM9N12_SRAM_SIZE);
}
static void __init at91sam9n12_initialize(void)
{
at91_sysirq_mask_rtc(AT91SAM9N12_BASE_RTC);
}
AT91_SOC_START(at91sam9n12)
.map_io = at91sam9n12_map_io,
.init = at91sam9n12_initialize,
AT91_SOC_END

3
arch/arm/mach-at91/at91sam9rl.c
View File

@ -41,9 +41,6 @@ static void __init at91sam9rl_map_io(void)
static void __init at91sam9rl_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
}
AT91_SOC_START(at91sam9rl)

10
arch/arm/mach-at91/at91sam9x5.c
View File

@ -21,16 +21,6 @@ static void __init at91sam9x5_map_io(void)
at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
}
static void __init at91sam9x5_initialize(void)
{
at91_sysirq_mask_rtc(AT91SAM9X5_BASE_RTC);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
AT91_SOC_START(at91sam9x5)
.map_io = at91sam9x5_map_io,
.init = at91sam9x5_initialize,
AT91_SOC_END

4
arch/arm/mach-at91/generic.h
View File

@ -25,10 +25,6 @@ extern void __init at91rm9200_set_type(int type);
extern void __init at91rm9200_dt_initialize(void);
extern void __init at91_dt_initialize(void);
/* Interrupts */
extern void __init at91_sysirq_mask_rtc(u32 rtc_base);
extern void __init at91_sysirq_mask_rtt(u32 rtt_base);
/* Timer */
extern void at91rm9200_timer_init(void);

35
arch/arm/mach-at91/include/mach/at91_rtt.h
View File

@ -1,35 +0,0 @@
/*
* arch/arm/mach-at91/include/mach/at91_rtt.h
*
* Copyright (C) 2007 Andrew Victor
* Copyright (C) 2007 Atmel Corporation.
*
* Real-time Timer (RTT) - System peripherals regsters.
* Based on AT91SAM9261 datasheet revision D.
*
* 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.
*/
#ifndef AT91_RTT_H
#define AT91_RTT_H
#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
#define AT91_RTT_RTPRES (0xffff << 0) /* Real-time Timer Prescaler Value */
#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
#define AT91_RTT_RTTRST (1 << 18) /* Real Time Timer Restart */
#define AT91_RTT_AR 0x04 /* Real-time Alarm Register */
#define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */
#define AT91_RTT_VR 0x08 /* Real-time Value Register */
#define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */
#define AT91_RTT_SR 0x0c /* Real-time Status Register */
#define AT91_RTT_ALMS (1 << 0) /* Real-time Alarm Status */
#define AT91_RTT_RTTINC (1 << 1) /* Real-time Timer Increment */
#endif

6
arch/arm/mach-at91/sama5d3.c
View File

@ -30,12 +30,6 @@ static void __init sama5d3_map_io(void)
at91_init_sram(0, SAMA5D3_SRAM_BASE, SAMA5D3_SRAM_SIZE);
}
static void __init sama5d3_initialize(void)
{
at91_sysirq_mask_rtc(SAMA5D3_BASE_RTC);
}
AT91_SOC_START(sama5d3)
.map_io = sama5d3_map_io,
.init = sama5d3_initialize,
AT91_SOC_END

75
arch/arm/mach-at91/sysirq_mask.c
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@ -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);
}