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authorShawn Guo <shawn.guo@linaro.org>2012-09-13 19:48:07 +0800
committerShawn Guo <shawn.guo@linaro.org>2012-10-15 10:02:19 +0800
commit3995eb82050a81e11217a0b88b2a5eddd53eb4d6 (patch)
treeb1c04b25317c9dade08d911e8077c8745df8a954 /arch/arm/plat-mxc/tzic.c
parente0557c0d1a3a9c38af6777d308f98da12c94e137 (diff)
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ARM: imx: merge plat-mxc into mach-imx
It's really unnecessary to have plat-mxc, and let's merge it into mach-imx. It's pretty much just a bunch of file renaming and Kconfig/Makefile merge. To make the change less invasive, we keep using Kconfig symbol CONFIG_ARCH_MXC for mach-imx sub-architecture. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/plat-mxc/tzic.c')
-rw-r--r--arch/arm/plat-mxc/tzic.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c
deleted file mode 100644
index 3ed1adbc09f8..000000000000
--- a/arch/arm/plat-mxc/tzic.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * Copyright (C)2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/errno.h>
-#include <linux/io.h>
-#include <linux/irqdomain.h>
-#include <linux/of.h>
-
-#include <asm/mach/irq.h>
-#include <asm/exception.h>
-
-#include <mach/hardware.h>
-#include <mach/common.h>
-#include <mach/irqs.h>
-
-#include "irq-common.h"
-
-/*
- *****************************************
- * TZIC Registers *
- *****************************************
- */
-
-#define TZIC_INTCNTL 0x0000 /* Control register */
-#define TZIC_INTTYPE 0x0004 /* Controller Type register */
-#define TZIC_IMPID 0x0008 /* Distributor Implementer Identification */
-#define TZIC_PRIOMASK 0x000C /* Priority Mask Reg */
-#define TZIC_SYNCCTRL 0x0010 /* Synchronizer Control register */
-#define TZIC_DSMINT 0x0014 /* DSM interrupt Holdoffregister */
-#define TZIC_INTSEC0(i) (0x0080 + ((i) << 2)) /* Interrupt Security Reg 0 */
-#define TZIC_ENSET0(i) (0x0100 + ((i) << 2)) /* Enable Set Reg 0 */
-#define TZIC_ENCLEAR0(i) (0x0180 + ((i) << 2)) /* Enable Clear Reg 0 */
-#define TZIC_SRCSET0 0x0200 /* Source Set Register 0 */
-#define TZIC_SRCCLAR0 0x0280 /* Source Clear Register 0 */
-#define TZIC_PRIORITY0 0x0400 /* Priority Register 0 */
-#define TZIC_PND0 0x0D00 /* Pending Register 0 */
-#define TZIC_HIPND(i) (0x0D80+ ((i) << 2)) /* High Priority Pending Register */
-#define TZIC_WAKEUP0(i) (0x0E00 + ((i) << 2)) /* Wakeup Config Register */
-#define TZIC_SWINT 0x0F00 /* Software Interrupt Rigger Register */
-#define TZIC_ID0 0x0FD0 /* Indentification Register 0 */
-
-void __iomem *tzic_base; /* Used as irq controller base in entry-macro.S */
-static struct irq_domain *domain;
-
-#define TZIC_NUM_IRQS 128
-
-#ifdef CONFIG_FIQ
-static int tzic_set_irq_fiq(unsigned int irq, unsigned int type)
-{
- unsigned int index, mask, value;
-
- index = irq >> 5;
- if (unlikely(index >= 4))
- return -EINVAL;
- mask = 1U << (irq & 0x1F);
-
- value = __raw_readl(tzic_base + TZIC_INTSEC0(index)) | mask;
- if (type)
- value &= ~mask;
- __raw_writel(value, tzic_base + TZIC_INTSEC0(index));
-
- return 0;
-}
-#else
-#define tzic_set_irq_fiq NULL
-#endif
-
-#ifdef CONFIG_PM
-static void tzic_irq_suspend(struct irq_data *d)
-{
- struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
- int idx = d->hwirq >> 5;
-
- __raw_writel(gc->wake_active, tzic_base + TZIC_WAKEUP0(idx));
-}
-
-static void tzic_irq_resume(struct irq_data *d)
-{
- int idx = d->hwirq >> 5;
-
- __raw_writel(__raw_readl(tzic_base + TZIC_ENSET0(idx)),
- tzic_base + TZIC_WAKEUP0(idx));
-}
-
-#else
-#define tzic_irq_suspend NULL
-#define tzic_irq_resume NULL
-#endif
-
-static struct mxc_extra_irq tzic_extra_irq = {
-#ifdef CONFIG_FIQ
- .set_irq_fiq = tzic_set_irq_fiq,
-#endif
-};
-
-static __init void tzic_init_gc(int idx, unsigned int irq_start)
-{
- struct irq_chip_generic *gc;
- struct irq_chip_type *ct;
-
- gc = irq_alloc_generic_chip("tzic", 1, irq_start, tzic_base,
- handle_level_irq);
- gc->private = &tzic_extra_irq;
- gc->wake_enabled = IRQ_MSK(32);
-
- ct = gc->chip_types;
- ct->chip.irq_mask = irq_gc_mask_disable_reg;
- ct->chip.irq_unmask = irq_gc_unmask_enable_reg;
- ct->chip.irq_set_wake = irq_gc_set_wake;
- ct->chip.irq_suspend = tzic_irq_suspend;
- ct->chip.irq_resume = tzic_irq_resume;
- ct->regs.disable = TZIC_ENCLEAR0(idx);
- ct->regs.enable = TZIC_ENSET0(idx);
-
- irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
-}
-
-asmlinkage void __exception_irq_entry tzic_handle_irq(struct pt_regs *regs)
-{
- u32 stat;
- int i, irqofs, handled;
-
- do {
- handled = 0;
-
- for (i = 0; i < 4; i++) {
- stat = __raw_readl(tzic_base + TZIC_HIPND(i)) &
- __raw_readl(tzic_base + TZIC_INTSEC0(i));
-
- while (stat) {
- handled = 1;
- irqofs = fls(stat) - 1;
- handle_IRQ(irq_find_mapping(domain,
- irqofs + i * 32), regs);
- stat &= ~(1 << irqofs);
- }
- }
- } while (handled);
-}
-
-/*
- * This function initializes the TZIC hardware and disables all the
- * interrupts. It registers the interrupt enable and disable functions
- * to the kernel for each interrupt source.
- */
-void __init tzic_init_irq(void __iomem *irqbase)
-{
- struct device_node *np;
- int irq_base;
- int i;
-
- tzic_base = irqbase;
- /* put the TZIC into the reset value with
- * all interrupts disabled
- */
- i = __raw_readl(tzic_base + TZIC_INTCNTL);
-
- __raw_writel(0x80010001, tzic_base + TZIC_INTCNTL);
- __raw_writel(0x1f, tzic_base + TZIC_PRIOMASK);
- __raw_writel(0x02, tzic_base + TZIC_SYNCCTRL);
-
- for (i = 0; i < 4; i++)
- __raw_writel(0xFFFFFFFF, tzic_base + TZIC_INTSEC0(i));
-
- /* disable all interrupts */
- for (i = 0; i < 4; i++)
- __raw_writel(0xFFFFFFFF, tzic_base + TZIC_ENCLEAR0(i));
-
- /* all IRQ no FIQ Warning :: No selection */
-
- irq_base = irq_alloc_descs(-1, 0, TZIC_NUM_IRQS, numa_node_id());
- WARN_ON(irq_base < 0);
-
- np = of_find_compatible_node(NULL, NULL, "fsl,tzic");
- domain = irq_domain_add_legacy(np, TZIC_NUM_IRQS, irq_base, 0,
- &irq_domain_simple_ops, NULL);
- WARN_ON(!domain);
-
- for (i = 0; i < 4; i++, irq_base += 32)
- tzic_init_gc(i, irq_base);
-
-#ifdef CONFIG_FIQ
- /* Initialize FIQ */
- init_FIQ(FIQ_START);
-#endif
-
- pr_info("TrustZone Interrupt Controller (TZIC) initialized\n");
-}
-
-/**
- * tzic_enable_wake() - enable wakeup interrupt
- *
- * @return 0 if successful; non-zero otherwise
- *
- * This function provides an interrupt synchronization point that is required
- * by tzic enabled platforms before entering imx specific low power modes (ie,
- * those low power modes beyond the WAIT_CLOCKED basic ARM WFI only mode).
- */
-int tzic_enable_wake(void)
-{
- unsigned int i;
-
- __raw_writel(1, tzic_base + TZIC_DSMINT);
- if (unlikely(__raw_readl(tzic_base + TZIC_DSMINT) == 0))
- return -EAGAIN;
-
- for (i = 0; i < 4; i++)
- __raw_writel(__raw_readl(tzic_base + TZIC_ENSET0(i)),
- tzic_base + TZIC_WAKEUP0(i));
-
- return 0;
-}
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