9 files changed, 69 insertions, 90 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 071a99674347..c9ae02a522b8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -789,6 +789,7 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:      Maintained
 T:      git git://git.pengutronix.de/git/imx/linux-2.6.git
 F:      arch/arm/mach-mx*/
+F:      arch/arm/mach-imx/
 F:      arch/arm/plat-mxc/
 
 ARM/FREESCALE IMX51
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 5f7f9c2a34ae..c44aa974e79c 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -10,11 +10,6 @@ config HAVE_IMX_MMDC
 config HAVE_IMX_SRC
         bool
 
-#
-# ARCH_MX31 and ARCH_MX35 are left for compatibility
-# Some usages assume that having one of them implies not having (e.g.) ARCH_MX2.
-# To easily distinguish good and reviewed from unreviewed usages new (and IMHO
-# more sensible) names are used: SOC_IMX31 and SOC_IMX35
 config ARCH_MX1
         bool
 
@@ -27,12 +22,6 @@ config ARCH_MX25
 config MACH_MX27
         bool
 
-config ARCH_MX31
-        bool
-
-config ARCH_MX35
-        bool
-
 config SOC_IMX1
         bool
         select ARCH_MX1
@@ -72,7 +61,6 @@ config SOC_IMX31
         select CPU_V6
         select IMX_HAVE_PLATFORM_MXC_RNGA
         select ARCH_MXC_AUDMUX_V2
-        select ARCH_MX31
         select MXC_AVIC
         select SMP_ON_UP if SMP
 
@@ -82,7 +70,6 @@ config SOC_IMX35
         select ARCH_MXC_IOMUX_V3
         select ARCH_MXC_AUDMUX_V2
         select HAVE_EPIT
-        select ARCH_MX35
         select MXC_AVIC
         select SMP_ON_UP if SMP
 
diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c
index 9f0e82ec3398..31807d2a8b7b 100644
--- a/arch/arm/mach-imx/mm-imx3.c
+++ b/arch/arm/mach-imx/mm-imx3.c
@@ -33,29 +33,32 @@
 static void imx3_idle(void)
 {
         unsigned long reg = 0;
-        __asm__ __volatile__(
-                /* disable I and D cache */
-                "mrc p15, 0, %0, c1, c0, 0\n"
-                "bic %0, %0, #0x00001000\n"
-                "bic %0, %0, #0x00000004\n"
-                "mcr p15, 0, %0, c1, c0, 0\n"
-                /* invalidate I cache */
-                "mov %0, #0\n"
-                "mcr p15, 0, %0, c7, c5, 0\n"
-                /* clear and invalidate D cache */
-                "mov %0, #0\n"
-                "mcr p15, 0, %0, c7, c14, 0\n"
-                /* WFI */
-                "mov %0, #0\n"
-                "mcr p15, 0, %0, c7, c0, 4\n"
-                "nop\n" "nop\n" "nop\n" "nop\n"
-                "nop\n" "nop\n" "nop\n"
-                /* enable I and D cache */
-                "mrc p15, 0, %0, c1, c0, 0\n"
-                "orr %0, %0, #0x00001000\n"
-                "orr %0, %0, #0x00000004\n"
-                "mcr p15, 0, %0, c1, c0, 0\n"
-                : "=r" (reg));
+
+        if (!need_resched())
+                __asm__ __volatile__(
+                        /* disable I and D cache */
+                        "mrc p15, 0, %0, c1, c0, 0\n"
+                        "bic %0, %0, #0x00001000\n"
+                        "bic %0, %0, #0x00000004\n"
+                        "mcr p15, 0, %0, c1, c0, 0\n"
+                        /* invalidate I cache */
+                        "mov %0, #0\n"
+                        "mcr p15, 0, %0, c7, c5, 0\n"
+                        /* clear and invalidate D cache */
+                        "mov %0, #0\n"
+                        "mcr p15, 0, %0, c7, c14, 0\n"
+                        /* WFI */
+                        "mov %0, #0\n"
+                        "mcr p15, 0, %0, c7, c0, 4\n"
+                        "nop\n" "nop\n" "nop\n" "nop\n"
+                        "nop\n" "nop\n" "nop\n"
+                        /* enable I and D cache */
+                        "mrc p15, 0, %0, c1, c0, 0\n"
+                        "orr %0, %0, #0x00001000\n"
+                        "orr %0, %0, #0x00000004\n"
+                        "mcr p15, 0, %0, c1, c0, 0\n"
+                        : "=r" (reg));
+        local_irq_enable();
 }
 
 static void __iomem *imx3_ioremap(unsigned long phys_addr, size_t size,
@@ -108,6 +111,7 @@ void imx3_init_l2x0(void)
         l2x0_init(l2x0_base, 0x00030024, 0x00000000);
 }
 
+#ifdef CONFIG_SOC_IMX31
 static struct map_desc mx31_io_desc[] __initdata = {
         imx_map_entry(MX31, X_MEMC, MT_DEVICE),
         imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
@@ -126,33 +130,11 @@ void __init mx31_map_io(void)
         iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
 }
 
-static struct map_desc mx35_io_desc[] __initdata = {
-        imx_map_entry(MX35, X_MEMC, MT_DEVICE),
-        imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
-        imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
-        imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
-        imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
-};
-
-void __init mx35_map_io(void)
-{
-        iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
-}
-
 void __init imx31_init_early(void)
 {
         mxc_set_cpu_type(MXC_CPU_MX31);
         mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
-        imx_idle = imx3_idle;
-        imx_ioremap = imx3_ioremap;
-}
-
-void __init imx35_init_early(void)
-{
-        mxc_set_cpu_type(MXC_CPU_MX35);
-        mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
-        mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
-        imx_idle = imx3_idle;
+        pm_idle = imx3_idle;
         imx_ioremap = imx3_ioremap;
 }
 
@@ -161,11 +143,6 @@ void __init mx31_init_irq(void)
         mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
 }
 
-void __init mx35_init_irq(void)
-{
-        mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
-}
-
 static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
         .per_2_per_addr = 1677,
 };
@@ -199,6 +176,35 @@ void __init imx31_soc_init(void)
 
         imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
 }
+#endif /* ifdef CONFIG_SOC_IMX31 */
+
+#ifdef CONFIG_SOC_IMX35
+static struct map_desc mx35_io_desc[] __initdata = {
+        imx_map_entry(MX35, X_MEMC, MT_DEVICE),
+        imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
+        imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
+        imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
+        imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
+};
+
+void __init mx35_map_io(void)
+{
+        iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
+}
+
+void __init imx35_init_early(void)
+{
+        mxc_set_cpu_type(MXC_CPU_MX35);
+        mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
+        mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
+        pm_idle = imx3_idle;
+        imx_ioremap = imx3_ioremap;
+}
+
+void __init mx35_init_irq(void)
+{
+        mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
+}
 
 static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
         .ap_2_ap_addr = 642,
@@ -254,3 +260,4 @@ void __init imx35_soc_init(void)
 
         imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
 }
+#endif /* ifdef CONFIG_SOC_IMX35 */
diff --git a/arch/arm/mach-mx5/cpu.c b/arch/arm/mach-mx5/cpu.c
index 5c5328257dca..5e2e7a843860 100644
--- a/arch/arm/mach-mx5/cpu.c
+++ b/arch/arm/mach-mx5/cpu.c
@@ -16,7 +16,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <mach/hardware.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 static int mx5_cpu_rev = -1;
 
@@ -67,7 +67,8 @@ static int __init mx51_neon_fixup(void)
         if (!cpu_is_mx51())
                 return 0;
 
-        if (mx51_revision() < IMX_CHIP_REVISION_3_0 && (elf_hwcap & HWCAP_NEON)) {
+        if (mx51_revision() < IMX_CHIP_REVISION_3_0 &&
+                        (elf_hwcap & HWCAP_NEON)) {
                 elf_hwcap &= ~HWCAP_NEON;
                 pr_info("Turning off NEON support, detected broken NEON implementation\n");
         }
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c
index 26eacc9d0d90..df4a508f240a 100644
--- a/arch/arm/mach-mx5/mm.c
+++ b/arch/arm/mach-mx5/mm.c
@@ -23,7 +23,9 @@
 
 static void imx5_idle(void)
 {
-        mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF);
+        if (!need_resched())
+                mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF);
+        local_irq_enable();
 }
 
 /*
@@ -89,7 +91,7 @@ void __init imx51_init_early(void)
         mxc_set_cpu_type(MXC_CPU_MX51);
         mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
         mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR));
-        imx_idle = imx5_idle;
+        pm_idle = imx5_idle;
 }
 
 void __init imx53_init_early(void)
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 7a5b6afc0982..c75f254abd85 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -85,7 +85,6 @@ enum mxc_cpu_pwr_mode {
 };
 
 extern void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode);
-extern void (*imx_idle)(void);
 extern void imx_print_silicon_rev(const char *cpu, int srev);
 
 void avic_handle_irq(struct pt_regs *);
diff --git a/arch/arm/plat-mxc/include/mach/mxc.h b/arch/arm/plat-mxc/include/mach/mxc.h
index 00a78193c681..a4d36d601d55 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -50,20 +50,6 @@
 #define IMX_CHIP_REVISION_3_3           0x33
 #define IMX_CHIP_REVISION_UNKNOWN       0xff
 
-#define IMX_CHIP_REVISION_1_0_STRING            "1.0"
-#define IMX_CHIP_REVISION_1_1_STRING            "1.1"
-#define IMX_CHIP_REVISION_1_2_STRING            "1.2"
-#define IMX_CHIP_REVISION_1_3_STRING            "1.3"
-#define IMX_CHIP_REVISION_2_0_STRING            "2.0"
-#define IMX_CHIP_REVISION_2_1_STRING            "2.1"
-#define IMX_CHIP_REVISION_2_2_STRING            "2.2"
-#define IMX_CHIP_REVISION_2_3_STRING            "2.3"
-#define IMX_CHIP_REVISION_3_0_STRING            "3.0"
-#define IMX_CHIP_REVISION_3_1_STRING            "3.1"
-#define IMX_CHIP_REVISION_3_2_STRING            "3.2"
-#define IMX_CHIP_REVISION_3_3_STRING            "3.3"
-#define IMX_CHIP_REVISION_UNKNOWN_STRING        "unknown"
-
 #ifndef __ASSEMBLY__
 extern unsigned int __mxc_cpu_type;
 #endif
diff --git a/arch/arm/plat-mxc/include/mach/system.h b/arch/arm/plat-mxc/include/mach/system.h
index cf88b3593fba..b9895d250167 100644
--- a/arch/arm/plat-mxc/include/mach/system.h
+++ b/arch/arm/plat-mxc/include/mach/system.h
@@ -17,14 +17,9 @@
 #ifndef __ASM_ARCH_MXC_SYSTEM_H__
 #define __ASM_ARCH_MXC_SYSTEM_H__
 
-extern void (*imx_idle)(void);
-
 static inline void arch_idle(void)
 {
-        if (imx_idle != NULL)
-                (imx_idle)();
-        else
-                cpu_do_idle();
+        cpu_do_idle();
 }
 
 void arch_reset(char mode, const char *cmd);
diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c
index 9dad8dcc2ea9..d65fb31a55ca 100644
--- a/arch/arm/plat-mxc/system.c
+++ b/arch/arm/plat-mxc/system.c
@@ -21,6 +21,7 @@
 #include <linux/io.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 
 #include <mach/hardware.h>
 #include <mach/common.h>
@@ -28,8 +29,8 @@
 #include <asm/system.h>
 #include <asm/mach-types.h>
 
-void (*imx_idle)(void) = NULL;
 void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int) = NULL;
+EXPORT_SYMBOL_GPL(imx_ioremap);
 
 static void __iomem *wdog_base;