Merge branch 'topic/lt-3.2-imx6-ugly' into lt-3.2-imx6

* topic/lt-3.2-imx6-ugly: (129 commits)
  imx6q: add clock debugfs support
  imx6q-sabrelite: add iomux setup
  iomux: add and export mxc_iomux_set_gpr_register()
  imx6q: add iomux v3 support
  imx6q: add UART2 as debug UART (to be removed)
  SAUCE: fix the missing header of <linux/module.h>
  SAUCE: fix the removal of mxc_register_device()
  SAUCE: mx53_loco: fix gpio_to_irq() being non-constant
  SAUCE: fix building errors after rebased to v3.2
  LINARO: Add lt-mx5_defconfig
  ARM i.MX5: fix system_rev if not set by atag or DT
  ENGR00162701 mxc_vout: fix potential deadlock of fb_blank
  ENGR00162666 mxc_vout: v4l2 playback blocking issue
  ENGR00162665 ipuv3 fb: fix non-interleave format wrong color issue
  ENGR00162664 mxc_vout: modify pp bypass condition
  ENGR00162663 ipuv3 fb: add vertical flip support
  ENGR00162475 ipuv3 fb: fix camera preview failure
  ENGR00162360 mxc_vout: fix STREAMOFF and G_CROP issues
  ENGR00162358 ipuv3 fb: only check pos when fb is unblank
  ENGR00162354 ipuv3 device: correct kthread operation for split task
  ...

Conflicts:
	arch/arm/mach-imx/mach-imx6q.c
	arch/arm/plat-mxc/include/mach/mx6q.h
	arch/arm/plat-mxc/include/mach/mxc.h
	drivers/char/Kconfig
	drivers/char/Makefile
	drivers/mxc/Kconfig
	drivers/mxc/Makefile
	drivers/rtc/Kconfig

1 files changed, 162 insertions, 0 deletions

diff --git a/arch/arm/mach-mx5/suspend.S b/arch/arm/mach-mx5/suspend.S
new file mode 100644
index 00000000000..c7937ec94d9
--- /dev/null
+++ b/arch/arm/mach-mx5/suspend.S
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2008-2011 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/linkage.h>
+
+#define ARM_CTRL_DCACHE  1 << 2
+#define ARM_CTRL_ICACHE  1 << 12
+#define ARM_AUXCR_L2EN   1 << 1
+
+
+/*
+ *	cpu_do_suspend_workaround()
+ *
+ *	Suspend the processor (eg, wait for interrupt).
+ *
+ *	IRQs are already disabled.
+ */
+ENTRY(cpu_do_suspend_workaround)
+    stmfd   sp!, {r4,r5,r6,r7,r9,r10,r11}     @ Save registers
+
+   mov    r6, r0                       @save iomux address
+    /* Disable L1 caches */
+    mrc     p15, 0, r0, c1, c0, 0    @ R0 = system control reg
+    bic     r0, r0, #ARM_CTRL_ICACHE @ Disable ICache
+    bic     r0, r0, #ARM_CTRL_DCACHE @ Disable DCache
+    mcr     p15, 0, r0, c1, c0, 0    @ Update system control reg
+
+    mrc     p15, 1, r0, c0, c0, 1   @ Read CLIDR
+    ands    r3, r0, #0x7000000       @ Isolate level of coherency
+    mov     r3, r3, lsr #23         @ Cache level value (naturally aligned)
+    beq     FinishedClean
+    mov     r10, #0
+Loop1Clean:
+    add     r2, r10, r10, lsr #1    @ Work out cache level
+    mov     r1, r0, lsr r2          @ R0 bottom 3 bits = Cache Type for this level
+    and     r1, r1, #7              @ Get those 3 bits alone
+    cmp     r1, #2
+    blt     SkipClean                @ No cache or only instruction cache at this level
+    mcr     p15, 2, r10, c0, c0, 0  @ Write the Cache Size selection register
+    mov     r1, #0
+    .long   0xF57FF06F              @ ISB
+    mrc     p15, 1, r1, c0, c0, 0   @ Reads current Cache Size ID register
+    and     r2, r1, #7             @ Extract the line length field
+    add     r2, r2, #4              @ Add 4 for the line length offset (log2 16 bytes)
+    ldr     r4, =0x3FF
+    ands    r4, r4, r1, lsr #3      @ R4 is the max number on the way size (right aligned)
+    clz     r5, r4                  @ R5 is the bit position of the way size increment
+    ldr     r7, =0x00007FFF
+    ands    r7, r7, r1, lsr #13     @ R7 is the max number of the index size (right aligned)
+Loop2Clean:
+    mov     r9, r4                  @ R9 working copy of the max way size (right aligned)
+Loop3Clean:
+    orr     r11, r10, r9, lsl r5    @ Factor in the way number and cache number into R11
+    orr     r11, r11, r7, lsl r2    @ Factor in the index number
+    mcr     p15, 0, r11, c7, c14, 2 @ Clean and invalidate by set/way
+    subs    r9, r9, #1              @ Decrement the way number
+    bge     Loop3Clean
+    subs    r7, r7, #1              @ Decrement the index
+    bge     Loop2Clean
+SkipClean:
+    add     r10, r10, #2            @ Increment the cache number
+    cmp     r3, r10
+    bgt     Loop1Clean
+
+FinishedClean:
+
+    /* Disable L2 cache */
+    mrc     p15, 0, r0, c1, c0, 1   @ R0 = auxiliary control reg
+    bic     r0, r0, #ARM_AUXCR_L2EN @ Disable L2 cache
+    mcr     p15, 0, r0, c1, c0, 1   @ Update aux control reg
+
+#if 0
+	/*Set the DDR drive strength to low */
+	ldr        r10, [r6]
+	and       r10, r10, #0xF1        @ clear bits 2-1
+	str        r10, [r6]
+#endif
+
+    .long     0xe320f003              @ Opcode for WFI
+
+#if 0
+	/*Set the DDR drive strength to max */
+	orr       r10, r10, #0x06        @ set bits 2-1
+	str        r10, [r6]
+#endif
+
+	ldr     r11, =0x0000fFFF
+TestLoop:
+	subs    r11,r11, #1              @ Decrement the index
+	bge     TestLoop
+
+    mov     r0, #0
+    mcr     p15, 0, r0, c7, c5, 0   @ Invalidate inst cache
+
+    /* Invalidate data caches */
+    mrc     p15, 1, r0, c0, c0, 1   @ Read CLIDR
+    ands    r3, r0, #0x7000000      @ Isolate level of coherency
+    mov     r3, r3, lsr #23         @ Cache level value (naturally aligned)
+    beq     FinishedInvalidate
+    mov     r10, #0
+Loop1Invalidate:
+    add     r2, r10, r10, lsr #1    @ Work out cache level
+    mov     r1, r0, lsr r2          @ R0 bottom 3 bits = Cache Type for this level
+    and     r1, r1, #7              @ Get those 3 bits alone
+    cmp     r1, #2
+    blt     SkipInvalidate          @ No cache or only instruction cache at this level
+    mcr     p15, 2, r10, c0, c0, 0  @ Write the Cache Size selection register
+    mov     r1, #0
+    .long   0xF57FF06F              @ ISB
+    mrc     p15, 1, r1, c0, c0, 0   @ Reads current Cache Size ID register
+    and     r2, r1, #7              @ Extract the line length field
+    add     r2, r2, #4              @ Add 4 for the line length offset (log2 16 bytes)
+    ldr     r4, =0x3FF
+    ands    r4, r4, r1, lsr #3      @ R4 is the max number on the way size (right aligned)
+    clz     r5, r4                  @ R5 is the bit position of the way size increment
+    ldr     r7, =0x00007FFF
+    ands    r7, r7, r1, lsr #13     @ R7 is the max number of the index size (right aligned)
+Loop2Invalidate:
+    mov     r9, r4                  @ R9 working copy of the max way size (right aligned)
+Loop3Invalidate:
+    orr     r11, r10, r9, lsl r5    @ Factor in the way number and cache number into R11
+    orr     r11, r11, r7, lsl r2    @ Factor in the index number
+    mcr     p15, 0, r11, c7, c6, 2  @ Invalidate by set/way
+    subs    r9, r9, #1              @ Decrement the way number
+    bge     Loop3Invalidate
+    subs    r7, r7, #1              @ Decrement the index
+    bge     Loop2Invalidate
+SkipInvalidate:
+    add     r10, r10, #2            @ Increment the cache number
+    cmp     r3, r10
+    bgt     Loop1Invalidate
+
+FinishedInvalidate:
+
+    /* Enable L2 cache */
+    mrc     p15, 0, r0, c1, c0, 1   @ R0 = auxiliary control reg
+    orr     r0, r0, #ARM_AUXCR_L2EN @ Enable L2 cache
+    mcr     p15, 0, r0, c1, c0, 1   @ Update aux control reg
+
+    /* Enable L1 caches */
+    mrc     p15, 0, r0, c1, c0, 0    @ R0 = system control reg
+    orr     r0, r0, #ARM_CTRL_ICACHE @ Enable ICache
+    orr     r0, r0, #ARM_CTRL_DCACHE @ Enable DCache
+    mcr     p15, 0, r0, c1, c0, 0    @ Update system control reg
+
+    /* Restore registers */
+    ldmfd sp!, {r4,r5,r6,r7,r9,r10,r11}
+    mov		pc, lr
+
+	.type	cpu_do_suspend, #object
+ENTRY(cpu_do_suspend)
+	.word	cpu_do_suspend_workaround
+	.size	cpu_do_suspend_workaround, . - cpu_do_suspend_workaround