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Diffstat (limited to 'arch/arm/plat-mxc/tzic.c')
| -rw-r--r-- | arch/arm/plat-mxc/tzic.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c deleted file mode 100644 index f257fccdc39..00000000000 --- a/arch/arm/plat-mxc/tzic.c +++ /dev/null @@ -1,160 +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 <asm/mach/irq.h> - -#include <mach/hardware.h> -#include <mach/common.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_HIPND0 0x0D80 /* 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 */ - -#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 - -static unsigned int *wakeup_intr[4]; - -static __init void tzic_init_gc(unsigned int irq_start) -{ - struct irq_chip_generic *gc; - struct irq_chip_type *ct; - int idx = irq_start >> 5; - - gc = irq_alloc_generic_chip("tzic", 1, irq_start, tzic_base, - handle_level_irq); - gc->private = tzic_set_irq_fiq; - gc->wake_enabled = IRQ_MSK(32); - wakeup_intr[idx] = &gc->wake_active; - - 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->regs.disable = TZIC_ENCLEAR0(idx); - ct->regs.enable = TZIC_ENSET0(idx); - - irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0); -} - -/* - * 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) -{ - 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 */ - - for (i = 0; i < TZIC_NUM_IRQS; i += 32) - tzic_init_gc(i); - -#ifdef CONFIG_FIQ - /* Initialize FIQ */ - init_FIQ(); -#endif - - pr_info("TrustZone Interrupt Controller (TZIC) initialized\n"); -} - -/** - * tzic_enable_wake() - enable wakeup interrupt - * - * @param is_idle 1 if called in idle loop (ENSET0 register); - * 0 to be used when called from low power entry - * @return 0 if successful; non-zero otherwise - */ -int tzic_enable_wake(int is_idle) -{ - unsigned int i, v; - - __raw_writel(1, tzic_base + TZIC_DSMINT); - if (unlikely(__raw_readl(tzic_base + TZIC_DSMINT) == 0)) - return -EAGAIN; - - for (i = 0; i < 4; i++) { - v = is_idle ? __raw_readl(tzic_base + TZIC_ENSET0(i)) : - *wakeup_intr[i]; - __raw_writel(v, tzic_base + TZIC_WAKEUP0(i)); - } - - return 0; -} |