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Subject[PATCHv2 04/11] mxc: changes to common plat-mxc code to add support for i.MX5
Date
Changes separted to help in the review process

Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
---
arch/arm/plat-mxc/include/mach/common.h | 4 +++
arch/arm/plat-mxc/include/mach/debug-macro.S | 9 +++++++
arch/arm/plat-mxc/include/mach/entry-macro.S | 34 +++++++++++++++++++++++++-
arch/arm/plat-mxc/include/mach/hardware.h | 4 +++
arch/arm/plat-mxc/include/mach/irqs.h | 9 ++++++-
arch/arm/plat-mxc/include/mach/memory.h | 3 ++
arch/arm/plat-mxc/include/mach/mxc.h | 13 ++++++++++
arch/arm/plat-mxc/include/mach/timex.h | 2 +
arch/arm/plat-mxc/time.c | 6 ++--
9 files changed, 79 insertions(+), 5 deletions(-)

diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 286cb9b..5250a3f 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -20,8 +20,10 @@ extern void mx25_map_io(void);
extern void mx27_map_io(void);
extern void mx31_map_io(void);
extern void mx35_map_io(void);
+extern void mx51_map_io(void);
extern void mxc91231_map_io(void);
extern void mxc_init_irq(void __iomem *);
+extern void tzic_init_irq(void __iomem *);
extern void mx1_init_irq(void);
extern void mx21_init_irq(void);
extern void mx25_init_irq(void);
@@ -36,6 +38,8 @@ extern int mx25_clocks_init(unsigned long fref);
extern int mx27_clocks_init(unsigned long fref);
extern int mx31_clocks_init(unsigned long fref);
extern int mx35_clocks_init(void);
+extern int mx51_clocks_init(unsigned long ckil, unsigned long osc,
+ unsigned long ckih1, unsigned long ckih2);
extern int mxc91231_clocks_init(unsigned long fref);
extern int mxc_register_gpios(void);
extern int mxc_register_device(struct platform_device *pdev, void *data);
diff --git a/arch/arm/plat-mxc/include/mach/debug-macro.S b/arch/arm/plat-mxc/include/mach/debug-macro.S
index 15b2b14..9fe7300 100644
--- a/arch/arm/plat-mxc/include/mach/debug-macro.S
+++ b/arch/arm/plat-mxc/include/mach/debug-macro.S
@@ -44,6 +44,15 @@
#define UART_VADDR AIPS1_IO_ADDRESS(UART1_BASE_ADDR)
#endif

+#ifdef CONFIG_ARCH_MX5
+#ifdef UART_PADDR
+#error "CONFIG_DEBUG_LL is incompatible with multiple archs"
+#endif
+#include <mach/mx51.h>
+#define UART_PADDR UART1_BASE_ADDR
+#define UART_VADDR AIPS1_IO_ADDRESS(UART1_BASE_ADDR)
+#endif
+
#ifdef CONFIG_ARCH_MXC91231
#ifdef UART_PADDR
#error "CONFIG_DEBUG_LL is incompatible with multiple archs"
diff --git a/arch/arm/plat-mxc/include/mach/entry-macro.S b/arch/arm/plat-mxc/include/mach/entry-macro.S
index 7cf290e..aeb0869 100644
--- a/arch/arm/plat-mxc/include/mach/entry-macro.S
+++ b/arch/arm/plat-mxc/include/mach/entry-macro.S
@@ -1,6 +1,6 @@
/*
* Copyright (C) 2007 Lennert Buytenhek <buytenh@wantstofly.org>
- * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*/

/*
@@ -18,11 +18,16 @@
.endm

.macro get_irqnr_preamble, base, tmp
+#ifndef CONFIG_MXC_TZIC
ldr \base, =avic_base
ldr \base, [\base]
#ifdef CONFIG_MXC_IRQ_PRIOR
ldr r4, [\base, #AVIC_NIMASK]
#endif
+#elif defined CONFIG_MXC_TZIC
+ ldr \base, =tzic_base
+ ldr \base, [\base]
+#endif /* CONFIG_MXC_TZIC */
.endm

.macro arch_ret_to_user, tmp1, tmp2
@@ -32,6 +37,7 @@
@ and returns its number in irqnr
@ and returns if an interrupt occured in irqstat
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+#ifndef CONFIG_MXC_TZIC
@ Load offset & priority of the highest priority
@ interrupt pending from AVIC_NIVECSR
ldr \irqstat, [\base, #0x40]
@@ -45,6 +51,32 @@
strne \tmp, [\base, #AVIC_NIMASK]
streq r4, [\base, #AVIC_NIMASK]
#endif
+#elif defined CONFIG_MXC_TZIC
+ @ Load offset & priority of the highest priority
+ @ interrupt pending.
+ @ 0xD80 is HIPND0 register
+ mov \irqnr, #0
+ mov \irqstat, #0x0D80
+1000:
+ ldr \tmp, [\irqstat, \base]
+ cmp \tmp, #0
+ bne 1001f
+ addeq \irqnr, \irqnr, #32
+ addeq \irqstat, \irqstat, #4
+ cmp \irqnr, #128
+ blo 1000b
+ b 2001f
+1001: mov \irqstat, #1
+1002: tst \tmp, \irqstat
+ bne 2002f
+ movs \tmp, \tmp, lsr #1
+ addne \irqnr, \irqnr, #1
+ bne 1002b
+2001:
+ mov \irqnr, #0
+2002:
+ movs \irqnr, \irqnr
+#endif
.endm

@ irq priority table (not used)
diff --git a/arch/arm/plat-mxc/include/mach/hardware.h b/arch/arm/plat-mxc/include/mach/hardware.h
index 78db754..55ebe88 100644
--- a/arch/arm/plat-mxc/include/mach/hardware.h
+++ b/arch/arm/plat-mxc/include/mach/hardware.h
@@ -22,6 +22,10 @@

#include <asm/sizes.h>

+#ifdef CONFIG_ARCH_MX5
+#include <mach/mx51.h>
+#endif
+
#ifdef CONFIG_ARCH_MX3
#include <mach/mx3x.h>
#include <mach/mx31.h>
diff --git a/arch/arm/plat-mxc/include/mach/irqs.h b/arch/arm/plat-mxc/include/mach/irqs.h
index ead9d59..24c066e 100644
--- a/arch/arm/plat-mxc/include/mach/irqs.h
+++ b/arch/arm/plat-mxc/include/mach/irqs.h
@@ -12,9 +12,13 @@
#define __ASM_ARCH_MXC_IRQS_H__

/*
- * So far all i.MX SoCs have 64 internal interrupts
+ * SoCs with TZIC interrupt controller have 128 IRQs, those with AVIC have 64
*/
+#ifdef CONFIG_MXC_TZIC
+#define MXC_INTERNAL_IRQS 128
+#else
#define MXC_INTERNAL_IRQS 64
+#endif

#define MXC_GPIO_IRQ_START MXC_INTERNAL_IRQS

@@ -26,6 +30,8 @@
#define MXC_GPIO_IRQS (32 * 3)
#elif defined CONFIG_ARCH_MX25
#define MXC_GPIO_IRQS (32 * 4)
+#elif defined CONFIG_ARCH_MX5
+#define MXC_GPIO_IRQS (32 * 4)
#elif defined CONFIG_ARCH_MXC91231
#define MXC_GPIO_IRQS (32 * 4)
#endif
@@ -46,6 +52,7 @@
#else
#define MX3_IPU_IRQS 0
#endif
+/* REVISIT: Add IPU irqs on IMX51 */

#define NR_IRQS (MXC_IPU_IRQ_START + MX3_IPU_IRQS)

diff --git a/arch/arm/plat-mxc/include/mach/memory.h b/arch/arm/plat-mxc/include/mach/memory.h
index d3afafd..e46626e 100644
--- a/arch/arm/plat-mxc/include/mach/memory.h
+++ b/arch/arm/plat-mxc/include/mach/memory.h
@@ -27,6 +27,9 @@
#elif defined CONFIG_ARCH_MXC91231
#define PHYS_OFFSET UL(0x90000000)
#endif
+#ifdef CONFIG_ARCH_MX5
+#define PHYS_OFFSET UL(0x90000000)
+#endif

#if defined(CONFIG_MX1_VIDEO)
/*
diff --git a/arch/arm/plat-mxc/include/mach/mxc.h b/arch/arm/plat-mxc/include/mach/mxc.h
index 5199053..555e5f8 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -30,6 +30,7 @@
#define MXC_CPU_MX27 27
#define MXC_CPU_MX31 31
#define MXC_CPU_MX35 35
+#define MXC_CPU_MX51 51
#define MXC_CPU_MXC91231 91231

#ifndef __ASSEMBLY__
@@ -108,6 +109,18 @@ extern unsigned int __mxc_cpu_type;
# define cpu_is_mx35() (0)
#endif

+#ifdef CONFIG_ARCH_MX5
+# ifdef mxc_cpu_type
+# undef mxc_cpu_type
+# define mxc_cpu_type __mxc_cpu_type
+# else
+# define mxc_cpu_type MXC_CPU_MX51
+# endif
+# define cpu_is_mx51() (mxc_cpu_type == MXC_CPU_MX51)
+#else
+# define cpu_is_mx51() (0)
+#endif
+
#ifdef CONFIG_ARCH_MXC91231
# ifdef mxc_cpu_type
# undef mxc_cpu_type
diff --git a/arch/arm/plat-mxc/include/mach/timex.h b/arch/arm/plat-mxc/include/mach/timex.h
index 527a6c2..024416e 100644
--- a/arch/arm/plat-mxc/include/mach/timex.h
+++ b/arch/arm/plat-mxc/include/mach/timex.h
@@ -28,6 +28,8 @@
#define CLOCK_TICK_RATE 16625000
#elif defined CONFIG_ARCH_MX25
#define CLOCK_TICK_RATE 16000000
+#elif defined CONFIG_ARCH_MX5
+#define CLOCK_TICK_RATE 8000000
#elif defined CONFIG_ARCH_MXC91231
#define CLOCK_TICK_RATE 13000000
#endif
diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c
index 7d6499e..2ba8b29 100644
--- a/arch/arm/plat-mxc/time.c
+++ b/arch/arm/plat-mxc/time.c
@@ -32,7 +32,7 @@

/* defines common for all i.MX */
#define MXC_TCTL 0x00
-#define MXC_TCTL_TEN (1 << 0)
+#define MXC_TCTL_TEN (1 << 0) /* Enable module */
#define MXC_TPRER 0x04

/* MX1, MX21, MX27 */
@@ -48,7 +48,7 @@
#define MX2_TSTAT_COMP (1 << 0)

/* MX31, MX35, MX25, MXC91231 */
-#define MX3_TCTL_WAITEN (1 << 3)
+#define MX3_TCTL_WAITEN (1 << 3) /* Wait enable mode */
#define MX3_TCTL_CLK_IPG (1 << 6)
#define MX3_TCTL_FRR (1 << 9)
#define MX3_IR 0x0c
@@ -58,7 +58,7 @@
#define MX3_TCMP 0x10

#define timer_is_v1() (cpu_is_mx1() || cpu_is_mx27())
-#define timer_is_v2() (cpu_is_mx3() || cpu_is_mx25())
+#define timer_is_v2() (cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51())

static struct clock_event_device clockevent_mxc;
static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED;
--
1.6.3.3


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