20 files changed, 113 insertions, 61 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1f254bd6c937..98922f7d2d12 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -955,7 +955,8 @@ config XSCALE_PMU
         default y
 
 config CPU_HAS_PMU
-        depends on CPU_V6 || CPU_V7 || XSCALE_PMU
+        depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
+                   (!ARCH_OMAP3 || OMAP3_EMU)
         default y
         bool
 
diff --git a/arch/arm/include/asm/mach/udc_pxa2xx.h b/arch/arm/include/asm/mach/udc_pxa2xx.h
index f3eabf1ecec3..833306ee9e7f 100644
--- a/arch/arm/include/asm/mach/udc_pxa2xx.h
+++ b/arch/arm/include/asm/mach/udc_pxa2xx.h
@@ -21,8 +21,8 @@ struct pxa2xx_udc_mach_info {
          * here.  Note that sometimes the signals go through inverters...
          */
         bool    gpio_vbus_inverted;
-        u16     gpio_vbus;                      /* high == vbus present */
+        int     gpio_vbus;                      /* high == vbus present */
         bool    gpio_pullup_inverted;
-        u16     gpio_pullup;                    /* high == pullup activated */
+        int     gpio_pullup;                    /* high == pullup activated */
 };
 
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index 6a89567ffc5b..7bed3daf83b8 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -91,7 +91,11 @@ extern void release_thread(struct task_struct *);
 
 unsigned long get_wchan(struct task_struct *p);
 
+#if __LINUX_ARM_ARCH__ == 6
+#define cpu_relax()                     smp_mb()
+#else
 #define cpu_relax()                     barrier()
+#endif
 
 /*
  * Create a new kernel thread
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index c45768614c8a..de12536d687f 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -201,7 +201,7 @@ armpmu_event_update(struct perf_event *event,
 {
         int shift = 64 - 32;
         s64 prev_raw_count, new_raw_count;
-        s64 delta;
+        u64 delta;
 
 again:
         prev_raw_count = atomic64_read(&hwc->prev_count);
diff --git a/arch/arm/mach-mx3/mach-mx31lilly.c b/arch/arm/mach-mx3/mach-mx31lilly.c
index d3d5877c750e..b2c7f512070f 100644
--- a/arch/arm/mach-mx3/mach-mx31lilly.c
+++ b/arch/arm/mach-mx3/mach-mx31lilly.c
@@ -115,6 +115,8 @@ static struct platform_device physmap_flash_device = {
 
 /* USB */
 
+#if defined(CONFIG_USB_ULPI)
+
 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 
@@ -244,10 +246,20 @@ static struct mxc_usbh_platform_data usbh2_pdata = {
         .flags  = MXC_EHCI_POWER_PINS_ENABLED,
 };
 
-static struct platform_device *devices[] __initdata = {
-        &smsc91x_device,
-        &physmap_flash_device,
-};
+static void lilly1131_usb_init(void)
+{
+        usbotg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+                                USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
+        usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+                                USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
+
+        mxc_register_device(&mxc_usbh1, &usbh1_pdata);
+        mxc_register_device(&mxc_usbh2, &usbh2_pdata);
+}
+
+#else
+static inline void lilly1131_usb_init(void) {}
+#endif /* CONFIG_USB_ULPI */
 
 /* SPI */
 
@@ -279,6 +291,11 @@ static struct spi_board_info mc13783_dev __initdata = {
         .platform_data  = &mc13783_pdata,
 };
 
+static struct platform_device *devices[] __initdata = {
+        &smsc91x_device,
+        &physmap_flash_device,
+};
+
 static int mx31lilly_baseboard;
 core_param(mx31lilly_baseboard, mx31lilly_baseboard, int, 0444);
 
@@ -321,13 +338,7 @@ static void __init mx31lilly_board_init(void)
         platform_add_devices(devices, ARRAY_SIZE(devices));
 
         /* USB */
-        usbotg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
-                                USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
-        usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
-                                USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
-
-        mxc_register_device(&mxc_usbh1, &usbh1_pdata);
-        mxc_register_device(&mxc_usbh2, &usbh2_pdata);
+        lilly1131_usb_init();
 }
 
 static void __init mx31lilly_timer_init(void)
diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c
index d60db87dde08..fa6a708b4099 100644
--- a/arch/arm/mach-pxa/mioa701.c
+++ b/arch/arm/mach-pxa/mioa701.c
@@ -697,7 +697,7 @@ static struct i2c_board_info __initdata mioa701_pi2c_devices[] = {
 };
 
 /* Board I2C devices. */
-static struct i2c_board_info __initdata mioa701_i2c_devices[] = {
+static struct i2c_board_info mioa701_i2c_devices[] = {
         {
                 I2C_BOARD_INFO("mt9m111", 0x5d),
         },
diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c
index f5d1ae3db3a4..d303c6929d32 100644
--- a/arch/arm/mach-pxa/z2.c
+++ b/arch/arm/mach-pxa/z2.c
@@ -3,8 +3,9 @@
  *
  *  Support for the Zipit Z2 Handheld device.
  *
- *  Author:     Ken McGuire
- *  Created:    Jan 25, 2009
+ *  Copyright (C) 2009-2010 Marek Vasut <marek.vasut@gmail.com>
+ *
+ *  Based on research and code by: Ken McGuire
  *  Based on mainstone.c as modified for the Zipit Z2.
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -157,21 +158,14 @@ static struct mtd_partition z2_flash_parts[] = {
         {
                 .name   = "U-Boot Bootloader",
                 .offset = 0x0,
-                .size   = 0x20000,
-        },
-        {
-                .name   = "Linux Kernel",
-                .offset = 0x20000,
-                .size   = 0x220000,
-        },
-        {
-                .name   = "Filesystem",
-                .offset = 0x240000,
-                .size   = 0x5b0000,
-        },
-        {
+                .size   = 0x40000,
+        }, {
                 .name   = "U-Boot Environment",
-                .offset = 0x7f0000,
+                .offset = 0x40000,
+                .size   = 0x60000,
+        }, {
+                .name   = "Flash",
+                .offset = 0x60000,
                 .size   = MTDPART_SIZ_FULL,
         },
 };
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index ee5e392430e8..b4575ae9648e 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -18,6 +18,7 @@ config REALVIEW_EB_ARM11MP
         bool "Support ARM11MPCore tile"
         depends on MACH_REALVIEW_EB
         select CPU_V6
+        select ARCH_HAS_BARRIERS if SMP
         help
           Enable support for the ARM11MPCore tile on the Realview platform.
 
@@ -35,6 +36,7 @@ config MACH_REALVIEW_PB11MP
         select CPU_V6
         select ARM_GIC
         select HAVE_PATA_PLATFORM
+        select ARCH_HAS_BARRIERS if SMP
         help
           Include support for the ARM(R) RealView MPCore Platform Baseboard.
           PB11MPCore is a platform with an on-board ARM11MPCore and has
diff --git a/arch/arm/mach-realview/include/mach/barriers.h b/arch/arm/mach-realview/include/mach/barriers.h
new file mode 100644
index 000000000000..0c5d749d7b5f
--- /dev/null
+++ b/arch/arm/mach-realview/include/mach/barriers.h
@@ -0,0 +1,8 @@
+/*
+ * Barriers redefined for RealView ARM11MPCore platforms with L220 cache
+ * controller to work around hardware errata causing the outer_sync()
+ * operation to deadlock the system.
+ */
+#define mb()            dsb()
+#define rmb()           dmb()
+#define wmb()           mb()
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 422ccd70d5f5..4425018fab82 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -32,6 +32,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/localtimer.h>
@@ -457,7 +458,7 @@ static void __init realview_eb_init(void)
 
 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-        .phys_io        = REALVIEW_EB_UART0_BASE,
+        .phys_io        = REALVIEW_EB_UART0_BASE & SECTION_MASK,
         .io_pg_offst    = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
         .boot_params    = PHYS_OFFSET + 0x00000100,
         .fixup          = realview_fixup,
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 96568ebfa2bb..099a1f125cf8 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -32,6 +32,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 
@@ -351,7 +352,7 @@ static void __init realview_pb1176_init(void)
 
 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-        .phys_io        = REALVIEW_PB1176_UART0_BASE,
+        .phys_io        = REALVIEW_PB1176_UART0_BASE & SECTION_MASK,
         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PB1176_UART0_BASE) >> 18) & 0xfffc,
         .boot_params    = PHYS_OFFSET + 0x00000100,
         .fixup          = realview_pb1176_fixup,
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 7fbefbbebaf0..0e07a5ccb75f 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -32,6 +32,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/localtimer.h>
@@ -373,7 +374,7 @@ static void __init realview_pb11mp_init(void)
 
 MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-        .phys_io        = REALVIEW_PB11MP_UART0_BASE,
+        .phys_io        = REALVIEW_PB11MP_UART0_BASE & SECTION_MASK,
         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PB11MP_UART0_BASE) >> 18) & 0xfffc,
         .boot_params    = PHYS_OFFSET + 0x00000100,
         .fixup          = realview_fixup,
diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index d3c113b3dfce..ac2f06f1ca50 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -31,6 +31,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 
 #include <asm/mach/arch.h>
@@ -323,7 +324,7 @@ static void __init realview_pba8_init(void)
 
 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-        .phys_io        = REALVIEW_PBA8_UART0_BASE,
+        .phys_io        = REALVIEW_PBA8_UART0_BASE & SECTION_MASK,
         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBA8_UART0_BASE) >> 18) & 0xfffc,
         .boot_params    = PHYS_OFFSET + 0x00000100,
         .fixup          = realview_fixup,
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index a235ba30996b..08fd683adc4c 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -31,6 +31,7 @@
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
 #include <asm/smp_twd.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 
@@ -409,7 +410,7 @@ static void __init realview_pbx_init(void)
 
 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-        .phys_io        = REALVIEW_PBX_UART0_BASE,
+        .phys_io        = REALVIEW_PBX_UART0_BASE & SECTION_MASK,
         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
         .boot_params    = PHYS_OFFSET + 0x00000100,
         .fixup          = realview_pbx_fixup,
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
index 9b11eedba65f..6353459bb567 100644
--- a/arch/arm/mach-vexpress/ct-ca9x4.c
+++ b/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -10,6 +10,7 @@
 #include <linux/amba/clcd.h>
 
 #include <asm/clkdev.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/gic.h>
@@ -236,7 +237,7 @@ static void ct_ca9x4_init(void)
 }
 
 MACHINE_START(VEXPRESS, "ARM-Versatile Express CA9x4")
-        .phys_io        = V2M_UART0,
+        .phys_io        = V2M_UART0 & SECTION_MASK,
         .io_pg_offst    = (__MMIO_P2V(V2M_UART0) >> 18) & 0xfffc,
         .boot_params    = PHYS_OFFSET + 0x00000100,
         .map_io         = ct_ca9x4_map_io,
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 346ae14824a5..101105e52610 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -735,6 +735,25 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
           Forget about fast user space cmpxchg support.
           It is just not possible.
 
+config DMA_CACHE_RWFO
+        bool "Enable read/write for ownership DMA cache maintenance"
+        depends on CPU_V6 && SMP
+        default y
+        help
+          The Snoop Control Unit on ARM11MPCore does not detect the
+          cache maintenance operations and the dma_{map,unmap}_area()
+          functions may leave stale cache entries on other CPUs. By
+          enabling this option, Read or Write For Ownership in the ARMv6
+          DMA cache maintenance functions is performed. These LDR/STR
+          instructions change the cache line state to shared or modified
+          so that the cache operation has the desired effect.
+
+          Note that the workaround is only valid on processors that do
+          not perform speculative loads into the D-cache. For such
+          processors, if cache maintenance operations are not broadcast
+          in hardware, other workarounds are needed (e.g. cache
+          maintenance broadcasting in software via FIQ).
+
 config OUTER_CACHE
         bool
 
@@ -794,6 +813,8 @@ config ARM_L1_CACHE_SHIFT
 
 config ARM_DMA_MEM_BUFFERABLE
         bool "Use non-cacheable memory for DMA" if CPU_V6 && !CPU_V7
+        depends on !(MACH_REALVIEW_PB1176 || REALVIEW_EB_ARM11MP || \
+                     MACH_REALVIEW_PB11MP)
         default y if CPU_V6 || CPU_V7
         help
           Historically, the kernel has used strongly ordered mappings to
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S
index e46ecd847138..86aa689ef1aa 100644
--- a/arch/arm/mm/cache-v6.S
+++ b/arch/arm/mm/cache-v6.S
@@ -211,8 +211,9 @@ v6_dma_inv_range:
         mcrne   p15, 0, r1, c7, c15, 1          @ clean & invalidate unified line
 #endif
 1:
-#ifdef CONFIG_SMP
-        str     r0, [r0]                        @ write for ownership
+#ifdef CONFIG_DMA_CACHE_RWFO
+        ldr     r2, [r0]                        @ read for ownership
+        str     r2, [r0]                        @ write for ownership
 #endif
 #ifdef HARVARD_CACHE
         mcr     p15, 0, r0, c7, c6, 1           @ invalidate D line
@@ -234,7 +235,7 @@ v6_dma_inv_range:
 v6_dma_clean_range:
         bic     r0, r0, #D_CACHE_LINE_SIZE - 1
 1:
-#ifdef CONFIG_SMP
+#ifdef CONFIG_DMA_CACHE_RWFO
         ldr     r2, [r0]                        @ read for ownership
 #endif
 #ifdef HARVARD_CACHE
@@ -257,7 +258,7 @@ v6_dma_clean_range:
 ENTRY(v6_dma_flush_range)
         bic     r0, r0, #D_CACHE_LINE_SIZE - 1
 1:
-#ifdef CONFIG_SMP
+#ifdef CONFIG_DMA_CACHE_RWFO
         ldr     r2, [r0]                        @ read for ownership
         str     r2, [r0]                        @ write for ownership
 #endif
@@ -283,9 +284,13 @@ ENTRY(v6_dma_map_area)
         add     r1, r1, r0
         teq     r2, #DMA_FROM_DEVICE
         beq     v6_dma_inv_range
+#ifndef CONFIG_DMA_CACHE_RWFO
+        b       v6_dma_clean_range
+#else
         teq     r2, #DMA_TO_DEVICE
         beq     v6_dma_clean_range
         b       v6_dma_flush_range
+#endif
 ENDPROC(v6_dma_map_area)
 
 /*
@@ -295,6 +300,11 @@ ENDPROC(v6_dma_map_area)
  *      - dir   - DMA direction
  */
 ENTRY(v6_dma_unmap_area)
+#ifndef CONFIG_DMA_CACHE_RWFO
+        add     r1, r1, r0
+        teq     r2, #DMA_TO_DEVICE
+        bne     v6_dma_inv_range
+#endif
         mov     pc, lr
 ENDPROC(v6_dma_unmap_area)
 
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 13fa536d82e6..9e7742f0a102 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -24,15 +24,6 @@
 #include <asm/tlbflush.h>
 #include <asm/sizes.h>
 
-/* Sanity check size */
-#if (CONSISTENT_DMA_SIZE % SZ_2M)
-#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
-#endif
-
-#define CONSISTENT_OFFSET(x)    (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
-#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
-#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
-
 static u64 get_coherent_dma_mask(struct device *dev)
 {
         u64 mask = ISA_DMA_THRESHOLD;
@@ -123,6 +114,15 @@ static void __dma_free_buffer(struct page *page, size_t size)
 }
 
 #ifdef CONFIG_MMU
+/* Sanity check size */
+#if (CONSISTENT_DMA_SIZE % SZ_2M)
+#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
+#endif
+
+#define CONSISTENT_OFFSET(x)    (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
+#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
+#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
+
 /*
  * These are the page tables (2MB each) covering uncached, DMA consistent allocations
  */
diff --git a/arch/arm/plat-pxa/Makefile b/arch/arm/plat-pxa/Makefile
index 6187edfbcb77..a17cc0c6a6b0 100644
--- a/arch/arm/plat-pxa/Makefile
+++ b/arch/arm/plat-pxa/Makefile
@@ -2,8 +2,9 @@
 # Makefile for code common across different PXA processor families
 #
 
-obj-y   := dma.o pmu.o
+obj-y   := dma.o
 
+obj-$(CONFIG_ARCH_PXA)          += pmu.o
 obj-$(CONFIG_GENERIC_GPIO)      += gpio.o
 obj-$(CONFIG_PXA3xx)            += mfp.o
 obj-$(CONFIG_ARCH_MMP)          += mfp.o
diff --git a/drivers/power/z2_battery.c b/drivers/power/z2_battery.c
index 9cca465436e3..85064a9f649e 100644
--- a/drivers/power/z2_battery.c
+++ b/drivers/power/z2_battery.c
@@ -9,19 +9,13 @@
  *
  */
 
-#include <linux/init.h>
-#include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/i2c.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
 #include <linux/gpio.h>
+#include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
-#include <asm/irq.h>
-#include <asm/mach/irq.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
 #include <linux/z2_battery.h>
 
 #define Z2_DEFAULT_NAME "Z2"