Merge branch 'linus' into tracing/hw-breakpoints

Conflicts:
	arch/x86/kernel/process_64.c

Semantic conflict fixed in:
	arch/x86/kvm/x86.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

11 files changed, 3773 insertions, 0 deletions

diff --git a/arch/arm/mach-bcmring/csp/Makefile b/arch/arm/mach-bcmring/csp/Makefile
new file mode 100644
index 00000000000..648c0377530
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/Makefile
@@ -0,0 +1,3 @@
+obj-y += dmac/
+obj-y += tmr/
+obj-y += chipc/
diff --git a/arch/arm/mach-bcmring/csp/chipc/Makefile b/arch/arm/mach-bcmring/csp/chipc/Makefile
new file mode 100644
index 00000000000..673952768ee
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/chipc/Makefile
@@ -0,0 +1 @@
+obj-y += chipcHw.o chipcHw_str.o chipcHw_reset.o chipcHw_init.o
diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw.c
new file mode 100644
index 00000000000..b3a61d860c6
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/chipc/chipcHw.c
@@ -0,0 +1,776 @@
+/*****************************************************************************
+* Copyright 2003 - 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/****************************************************************************/
+/**
+*  @file    chipcHw.c
+*
+*  @brief   Low level Various CHIP clock controlling routines
+*
+*  @note
+*
+*   These routines provide basic clock controlling functionality only.
+*/
+/****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <csp/errno.h>
+#include <csp/stdint.h>
+#include <csp/module.h>
+
+#include <mach/csp/chipcHw_def.h>
+#include <mach/csp/chipcHw_inline.h>
+
+#include <csp/reg.h>
+#include <csp/delay.h>
+
+/* ---- Private Constants and Types --------------------------------------- */
+
+/* VPM alignment algorithm uses this */
+#define MAX_PHASE_ADJUST_COUNT         0xFFFF	/* Max number of times allowed to adjust the phase */
+#define MAX_PHASE_ALIGN_ATTEMPTS       10	/* Max number of attempt to align the phase */
+
+/* Local definition of clock type */
+#define PLL_CLOCK                      1	/* PLL Clock */
+#define NON_PLL_CLOCK                  2	/* Divider clock */
+
+static int chipcHw_divide(int num, int denom)
+    __attribute__ ((section(".aramtext")));
+
+/****************************************************************************/
+/**
+*  @brief   Set clock fequency for miscellaneous configurable clocks
+*
+*  This function sets clock frequency
+*
+*  @return  Configured clock frequency in hertz
+*
+*/
+/****************************************************************************/
+chipcHw_freq chipcHw_getClockFrequency(chipcHw_CLOCK_e clock	/*  [ IN ] Configurable clock */
+    ) {
+	volatile uint32_t *pPLLReg = (uint32_t *) 0x0;
+	volatile uint32_t *pClockCtrl = (uint32_t *) 0x0;
+	volatile uint32_t *pDependentClock = (uint32_t *) 0x0;
+	uint32_t vcoFreqPll1Hz = 0;	/* Effective VCO frequency for PLL1 in Hz */
+	uint32_t vcoFreqPll2Hz = 0;	/* Effective VCO frequency for PLL2 in Hz */
+	uint32_t dependentClockType = 0;
+	uint32_t vcoHz = 0;
+
+	/* Get VCO frequencies */
+	if ((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_MASK) != chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER) {
+		uint64_t adjustFreq = 0;
+
+		vcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz *
+		    chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+		    ((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+		     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT);
+
+		/* Adjusted frequency due to chipcHw_REG_PLL_DIVIDER_NDIV_f_SS */
+		adjustFreq = (uint64_t) chipcHw_XTAL_FREQ_Hz *
+			(uint64_t) chipcHw_REG_PLL_DIVIDER_NDIV_f_SS *
+			chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, (chipcHw_REG_PLL_PREDIVIDER_P2 * (uint64_t) chipcHw_REG_PLL_DIVIDER_FRAC));
+		vcoFreqPll1Hz += (uint32_t) adjustFreq;
+	} else {
+		vcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz *
+		    chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+		    ((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+		     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT);
+	}
+	vcoFreqPll2Hz =
+	    chipcHw_XTAL_FREQ_Hz *
+		 chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+	    ((pChipcHw->PLLPreDivider2 & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+	     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT);
+
+	switch (clock) {
+	case chipcHw_CLOCK_DDR:
+		pPLLReg = &pChipcHw->DDRClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ARM:
+		pPLLReg = &pChipcHw->ARMClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ESW:
+		pPLLReg = &pChipcHw->ESWClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_VPM:
+		pPLLReg = &pChipcHw->VPMClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ESW125:
+		pPLLReg = &pChipcHw->ESW125Clock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_UART:
+		pPLLReg = &pChipcHw->UARTClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_SDIO0:
+		pPLLReg = &pChipcHw->SDIO0Clock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_SDIO1:
+		pPLLReg = &pChipcHw->SDIO1Clock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_SPI:
+		pPLLReg = &pChipcHw->SPIClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ETM:
+		pPLLReg = &pChipcHw->ETMClock;
+		vcoHz = vcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_USB:
+		pPLLReg = &pChipcHw->USBClock;
+		vcoHz = vcoFreqPll2Hz;
+		break;
+	case chipcHw_CLOCK_LCD:
+		pPLLReg = &pChipcHw->LCDClock;
+		vcoHz = vcoFreqPll2Hz;
+		break;
+	case chipcHw_CLOCK_APM:
+		pPLLReg = &pChipcHw->APMClock;
+		vcoHz = vcoFreqPll2Hz;
+		break;
+	case chipcHw_CLOCK_BUS:
+		pClockCtrl = &pChipcHw->ACLKClock;
+		pDependentClock = &pChipcHw->ARMClock;
+		vcoHz = vcoFreqPll1Hz;
+		dependentClockType = PLL_CLOCK;
+		break;
+	case chipcHw_CLOCK_OTP:
+		pClockCtrl = &pChipcHw->OTPClock;
+		break;
+	case chipcHw_CLOCK_I2C:
+		pClockCtrl = &pChipcHw->I2CClock;
+		break;
+	case chipcHw_CLOCK_I2S0:
+		pClockCtrl = &pChipcHw->I2S0Clock;
+		break;
+	case chipcHw_CLOCK_RTBUS:
+		pClockCtrl = &pChipcHw->RTBUSClock;
+		pDependentClock = &pChipcHw->ACLKClock;
+		dependentClockType = NON_PLL_CLOCK;
+		break;
+	case chipcHw_CLOCK_APM100:
+		pClockCtrl = &pChipcHw->APM100Clock;
+		pDependentClock = &pChipcHw->APMClock;
+		vcoHz = vcoFreqPll2Hz;
+		dependentClockType = PLL_CLOCK;
+		break;
+	case chipcHw_CLOCK_TSC:
+		pClockCtrl = &pChipcHw->TSCClock;
+		break;
+	case chipcHw_CLOCK_LED:
+		pClockCtrl = &pChipcHw->LEDClock;
+		break;
+	case chipcHw_CLOCK_I2S1:
+		pClockCtrl = &pChipcHw->I2S1Clock;
+		break;
+	}
+
+	if (pPLLReg) {
+		/* Obtain PLL clock frequency */
+		if (*pPLLReg & chipcHw_REG_PLL_CLOCK_BYPASS_SELECT) {
+			/* Return crystal clock frequency when bypassed */
+			return chipcHw_XTAL_FREQ_Hz;
+		} else if (clock == chipcHw_CLOCK_DDR) {
+			/* DDR frequency is configured in PLLDivider register */
+			return chipcHw_divide (vcoHz, (((pChipcHw->PLLDivider & 0xFF000000) >> 24) ? ((pChipcHw->PLLDivider & 0xFF000000) >> 24) : 256));
+		} else {
+			/* From chip revision number B0, LCD clock is internally divided by 2 */
+			if ((pPLLReg == &pChipcHw->LCDClock) && (chipcHw_getChipRevisionNumber() != chipcHw_REV_NUMBER_A0)) {
+				vcoHz >>= 1;
+			}
+			/* Obtain PLL clock frequency using VCO dividers */
+			return chipcHw_divide(vcoHz, ((*pPLLReg & chipcHw_REG_PLL_CLOCK_MDIV_MASK) ? (*pPLLReg & chipcHw_REG_PLL_CLOCK_MDIV_MASK) : 256));
+		}
+	} else if (pClockCtrl) {
+		/* Obtain divider clock frequency */
+		uint32_t div;
+		uint32_t freq = 0;
+
+		if (*pClockCtrl & chipcHw_REG_DIV_CLOCK_BYPASS_SELECT) {
+			/* Return crystal clock frequency when bypassed */
+			return chipcHw_XTAL_FREQ_Hz;
+		} else if (pDependentClock) {
+			/* Identify the dependent clock frequency */
+			switch (dependentClockType) {
+			case PLL_CLOCK:
+				if (*pDependentClock & chipcHw_REG_PLL_CLOCK_BYPASS_SELECT) {
+					/* Use crystal clock frequency when dependent PLL clock is bypassed */
+					freq = chipcHw_XTAL_FREQ_Hz;
+				} else {
+					/* Obtain PLL clock frequency using VCO dividers */
+					div = *pDependentClock & chipcHw_REG_PLL_CLOCK_MDIV_MASK;
+					freq = div ? chipcHw_divide(vcoHz, div) : 0;
+				}
+				break;
+			case NON_PLL_CLOCK:
+				if (pDependentClock == (uint32_t *) &pChipcHw->ACLKClock) {
+					freq = chipcHw_getClockFrequency (chipcHw_CLOCK_BUS);
+				} else {
+					if (*pDependentClock & chipcHw_REG_DIV_CLOCK_BYPASS_SELECT) {
+						/* Use crystal clock frequency when dependent divider clock is bypassed */
+						freq = chipcHw_XTAL_FREQ_Hz;
+					} else {
+						/* Obtain divider clock frequency using XTAL dividers */
+						div = *pDependentClock & chipcHw_REG_DIV_CLOCK_DIV_MASK;
+						freq = chipcHw_divide (chipcHw_XTAL_FREQ_Hz, (div ? div : 256));
+					}
+				}
+				break;
+			}
+		} else {
+			/* Dependent on crystal clock */
+			freq = chipcHw_XTAL_FREQ_Hz;
+		}
+
+		div = *pClockCtrl & chipcHw_REG_DIV_CLOCK_DIV_MASK;
+		return chipcHw_divide(freq, (div ? div : 256));
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Set clock fequency for miscellaneous configurable clocks
+*
+*  This function sets clock frequency
+*
+*  @return  Configured clock frequency in Hz
+*
+*/
+/****************************************************************************/
+chipcHw_freq chipcHw_setClockFrequency(chipcHw_CLOCK_e clock,	/*  [ IN ] Configurable clock */
+				       uint32_t freq	/*  [ IN ] Clock frequency in Hz */
+    ) {
+	volatile uint32_t *pPLLReg = (uint32_t *) 0x0;
+	volatile uint32_t *pClockCtrl = (uint32_t *) 0x0;
+	volatile uint32_t *pDependentClock = (uint32_t *) 0x0;
+	uint32_t vcoFreqPll1Hz = 0;	/* Effective VCO frequency for PLL1 in Hz */
+	uint32_t desVcoFreqPll1Hz = 0;	/* Desired VCO frequency for PLL1 in Hz */
+	uint32_t vcoFreqPll2Hz = 0;	/* Effective VCO frequency for PLL2 in Hz */
+	uint32_t dependentClockType = 0;
+	uint32_t vcoHz = 0;
+	uint32_t desVcoHz = 0;
+
+	/* Get VCO frequencies */
+	if ((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_MASK) != chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER) {
+		uint64_t adjustFreq = 0;
+
+		vcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz *
+		    chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+		    ((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+		     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT);
+
+		/* Adjusted frequency due to chipcHw_REG_PLL_DIVIDER_NDIV_f_SS */
+		adjustFreq = (uint64_t) chipcHw_XTAL_FREQ_Hz *
+			(uint64_t) chipcHw_REG_PLL_DIVIDER_NDIV_f_SS *
+			chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, (chipcHw_REG_PLL_PREDIVIDER_P2 * (uint64_t) chipcHw_REG_PLL_DIVIDER_FRAC));
+		vcoFreqPll1Hz += (uint32_t) adjustFreq;
+
+		/* Desired VCO frequency */
+		desVcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz *
+		    chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+		    (((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+		      chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) + 1);
+	} else {
+		vcoFreqPll1Hz = desVcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz *
+		    chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+		    ((pChipcHw->PLLPreDivider & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+		     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT);
+	}
+	vcoFreqPll2Hz = chipcHw_XTAL_FREQ_Hz * chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) *
+	    ((pChipcHw->PLLPreDivider2 & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >>
+	     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT);
+
+	switch (clock) {
+	case chipcHw_CLOCK_DDR:
+		/* Configure the DDR_ctrl:BUS ratio settings */
+		{
+			REG_LOCAL_IRQ_SAVE;
+			/* Dvide DDR_phy by two to obtain DDR_ctrl clock */
+			pChipcHw->DDRClock = (pChipcHw->DDRClock & ~chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_MASK) | ((((freq / 2) / chipcHw_getClockFrequency(chipcHw_CLOCK_BUS)) - 1)
+				<< chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_SHIFT);
+			REG_LOCAL_IRQ_RESTORE;
+		}
+		pPLLReg = &pChipcHw->DDRClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ARM:
+		pPLLReg = &pChipcHw->ARMClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ESW:
+		pPLLReg = &pChipcHw->ESWClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_VPM:
+		/* Configure the VPM:BUS ratio settings */
+		{
+			REG_LOCAL_IRQ_SAVE;
+			pChipcHw->VPMClock = (pChipcHw->VPMClock & ~chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_MASK) | ((chipcHw_divide (freq, chipcHw_getClockFrequency(chipcHw_CLOCK_BUS)) - 1)
+				<< chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_SHIFT);
+			REG_LOCAL_IRQ_RESTORE;
+		}
+		pPLLReg = &pChipcHw->VPMClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ESW125:
+		pPLLReg = &pChipcHw->ESW125Clock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_UART:
+		pPLLReg = &pChipcHw->UARTClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_SDIO0:
+		pPLLReg = &pChipcHw->SDIO0Clock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_SDIO1:
+		pPLLReg = &pChipcHw->SDIO1Clock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_SPI:
+		pPLLReg = &pChipcHw->SPIClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_ETM:
+		pPLLReg = &pChipcHw->ETMClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		break;
+	case chipcHw_CLOCK_USB:
+		pPLLReg = &pChipcHw->USBClock;
+		vcoHz = vcoFreqPll2Hz;
+		desVcoHz = vcoFreqPll2Hz;
+		break;
+	case chipcHw_CLOCK_LCD:
+		pPLLReg = &pChipcHw->LCDClock;
+		vcoHz = vcoFreqPll2Hz;
+		desVcoHz = vcoFreqPll2Hz;
+		break;
+	case chipcHw_CLOCK_APM:
+		pPLLReg = &pChipcHw->APMClock;
+		vcoHz = vcoFreqPll2Hz;
+		desVcoHz = vcoFreqPll2Hz;
+		break;
+	case chipcHw_CLOCK_BUS:
+		pClockCtrl = &pChipcHw->ACLKClock;
+		pDependentClock = &pChipcHw->ARMClock;
+		vcoHz = vcoFreqPll1Hz;
+		desVcoHz = desVcoFreqPll1Hz;
+		dependentClockType = PLL_CLOCK;
+		break;
+	case chipcHw_CLOCK_OTP:
+		pClockCtrl = &pChipcHw->OTPClock;
+		break;
+	case chipcHw_CLOCK_I2C:
+		pClockCtrl = &pChipcHw->I2CClock;
+		break;
+	case chipcHw_CLOCK_I2S0:
+		pClockCtrl = &pChipcHw->I2S0Clock;
+		break;
+	case chipcHw_CLOCK_RTBUS:
+		pClockCtrl = &pChipcHw->RTBUSClock;
+		pDependentClock = &pChipcHw->ACLKClock;
+		dependentClockType = NON_PLL_CLOCK;
+		break;
+	case chipcHw_CLOCK_APM100:
+		pClockCtrl = &pChipcHw->APM100Clock;
+		pDependentClock = &pChipcHw->APMClock;
+		vcoHz = vcoFreqPll2Hz;
+		desVcoHz = vcoFreqPll2Hz;
+		dependentClockType = PLL_CLOCK;
+		break;
+	case chipcHw_CLOCK_TSC:
+		pClockCtrl = &pChipcHw->TSCClock;
+		break;
+	case chipcHw_CLOCK_LED:
+		pClockCtrl = &pChipcHw->LEDClock;
+		break;
+	case chipcHw_CLOCK_I2S1:
+		pClockCtrl = &pChipcHw->I2S1Clock;
+		break;
+	}
+
+	if (pPLLReg) {
+		/* Select XTAL as bypass source */
+		reg32_modify_and(pPLLReg, ~chipcHw_REG_PLL_CLOCK_SOURCE_GPIO);
+		reg32_modify_or(pPLLReg, chipcHw_REG_PLL_CLOCK_BYPASS_SELECT);
+		/* For DDR settings use only the PLL divider clock */
+		if (pPLLReg == &pChipcHw->DDRClock) {
+			/* Set M1DIV for PLL1, which controls the DDR clock */
+			reg32_write(&pChipcHw->PLLDivider, (pChipcHw->PLLDivider & 0x00FFFFFF) | ((chipcHw_REG_PLL_DIVIDER_MDIV (desVcoHz, freq)) << 24));
+			/* Calculate expected frequency */
+			freq = chipcHw_divide(vcoHz, (((pChipcHw->PLLDivider & 0xFF000000) >> 24) ? ((pChipcHw->PLLDivider & 0xFF000000) >> 24) : 256));
+		} else {
+			/* From chip revision number B0, LCD clock is internally divided by 2 */
+			if ((pPLLReg == &pChipcHw->LCDClock) && (chipcHw_getChipRevisionNumber() != chipcHw_REV_NUMBER_A0)) {
+				desVcoHz >>= 1;
+				vcoHz >>= 1;
+			}
+			/* Set MDIV to change the frequency */
+			reg32_modify_and(pPLLReg, ~(chipcHw_REG_PLL_CLOCK_MDIV_MASK));
+			reg32_modify_or(pPLLReg, chipcHw_REG_PLL_DIVIDER_MDIV(desVcoHz, freq));
+			/* Calculate expected frequency */
+			freq = chipcHw_divide(vcoHz, ((*(pPLLReg) & chipcHw_REG_PLL_CLOCK_MDIV_MASK) ? (*(pPLLReg) & chipcHw_REG_PLL_CLOCK_MDIV_MASK) : 256));
+		}
+		/* Wait for for atleast 200ns as per the protocol to change frequency */
+		udelay(1);
+		/* Do not bypass */
+		reg32_modify_and(pPLLReg, ~chipcHw_REG_PLL_CLOCK_BYPASS_SELECT);
+		/* Return the configured frequency */
+		return freq;
+	} else if (pClockCtrl) {
+		uint32_t divider = 0;
+
+		/* Divider clock should not be bypassed  */
+		reg32_modify_and(pClockCtrl,
+				 ~chipcHw_REG_DIV_CLOCK_BYPASS_SELECT);
+
+		/* Identify the clock source */
+		if (pDependentClock) {
+			switch (dependentClockType) {
+			case PLL_CLOCK:
+				divider = chipcHw_divide(chipcHw_divide (desVcoHz, (*pDependentClock & chipcHw_REG_PLL_CLOCK_MDIV_MASK)), freq);
+				break;
+			case NON_PLL_CLOCK:
+				{
+					uint32_t sourceClock = 0;
+
+					if (pDependentClock == (uint32_t *) &pChipcHw->ACLKClock) {
+						sourceClock = chipcHw_getClockFrequency (chipcHw_CLOCK_BUS);
+					} else {
+						uint32_t div = *pDependentClock & chipcHw_REG_DIV_CLOCK_DIV_MASK;
+						sourceClock = chipcHw_divide (chipcHw_XTAL_FREQ_Hz, ((div) ? div : 256));
+					}
+					divider = chipcHw_divide(sourceClock, freq);
+				}
+				break;
+			}
+		} else {
+			divider = chipcHw_divide(chipcHw_XTAL_FREQ_Hz, freq);
+		}
+
+		if (divider) {
+			REG_LOCAL_IRQ_SAVE;
+			/* Set the divider to obtain the required frequency */
+			*pClockCtrl = (*pClockCtrl & (~chipcHw_REG_DIV_CLOCK_DIV_MASK)) | (((divider > 256) ? chipcHw_REG_DIV_CLOCK_DIV_256 : divider) & chipcHw_REG_DIV_CLOCK_DIV_MASK);
+			REG_LOCAL_IRQ_RESTORE;
+			return freq;
+		}
+	}
+
+	return 0;
+}
+
+EXPORT_SYMBOL(chipcHw_setClockFrequency);
+
+/****************************************************************************/
+/**
+*  @brief   Set VPM clock in sync with BUS clock for Chip Rev #A0
+*
+*  This function does the phase adjustment between VPM and BUS clock
+*
+*  @return >= 0 : On success (# of adjustment required)
+*            -1 : On failure
+*
+*/
+/****************************************************************************/
+static int vpmPhaseAlignA0(void)
+{
+	uint32_t phaseControl;
+	uint32_t phaseValue;
+	uint32_t prevPhaseComp;
+	int iter = 0;
+	int adjustCount = 0;
+	int count = 0;
+
+	for (iter = 0; (iter < MAX_PHASE_ALIGN_ATTEMPTS) && (adjustCount < MAX_PHASE_ADJUST_COUNT); iter++) {
+		phaseControl = (pChipcHw->VPMClock & chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK) >> chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT;
+		phaseValue = 0;
+		prevPhaseComp = 0;
+
+		/* Step 1: Look for falling PH_COMP transition */
+
+		/* Read the contents of VPM Clock resgister */
+		phaseValue = pChipcHw->VPMClock;
+		do {
+			/* Store previous value of phase comparator */
+			prevPhaseComp = phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP;
+			/* Change the value of PH_CTRL. */
+			reg32_write(&pChipcHw->VPMClock, (pChipcHw->VPMClock & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT));
+			/* Wait atleast 20 ns */
+			udelay(1);
+			/* Toggle the LOAD_CH after phase control is written. */
+			pChipcHw->VPMClock ^= chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+			/* Read the contents of  VPM Clock resgister. */
+			phaseValue = pChipcHw->VPMClock;
+
+			if ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0x0) {
+				phaseControl = (0x3F & (phaseControl - 1));
+			} else {
+				/* Increment to the Phase count value for next write, if Phase is not stable. */
+				phaseControl = (0x3F & (phaseControl + 1));
+			}
+			/* Count number of adjustment made */
+			adjustCount++;
+		} while (((prevPhaseComp == (phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP)) ||	/* Look for a transition */
+			  ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) != 0x0)) &&	/* Look for a falling edge */
+			 (adjustCount < MAX_PHASE_ADJUST_COUNT)	/* Do not exceed the limit while trying */
+		    );
+
+		if (adjustCount >= MAX_PHASE_ADJUST_COUNT) {
+			/* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */
+			return -1;
+		}
+
+		/* Step 2: Keep moving forward to make sure falling PH_COMP transition was valid */
+
+		for (count = 0; (count < 5) && ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0); count++) {
+			phaseControl = (0x3F & (phaseControl + 1));
+			reg32_write(&pChipcHw->VPMClock, (pChipcHw->VPMClock & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT));
+			/* Wait atleast 20 ns */
+			udelay(1);
+			/* Toggle the LOAD_CH after phase control is written. */
+			pChipcHw->VPMClock ^= chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+			phaseValue = pChipcHw->VPMClock;
+			/* Count number of adjustment made */
+			adjustCount++;
+		}
+
+		if (adjustCount >= MAX_PHASE_ADJUST_COUNT) {
+			/* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */
+			return -1;
+		}
+
+		if (count != 5) {
+			/* Detected false transition */
+			continue;
+		}
+
+		/* Step 3: Keep moving backward to make sure falling PH_COMP transition was stable */
+
+		for (count = 0; (count < 3) && ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0); count++) {
+			phaseControl = (0x3F & (phaseControl - 1));
+			reg32_write(&pChipcHw->VPMClock, (pChipcHw->VPMClock & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT));
+			/* Wait atleast 20 ns */
+			udelay(1);
+			/* Toggle the LOAD_CH after phase control is written. */
+			pChipcHw->VPMClock ^= chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+			phaseValue = pChipcHw->VPMClock;
+			/* Count number of adjustment made */
+			adjustCount++;
+		}
+
+		if (adjustCount >= MAX_PHASE_ADJUST_COUNT) {
+			/* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */
+			return -1;
+		}
+
+		if (count != 3) {
+			/* Detected noisy transition */
+			continue;
+		}
+
+		/* Step 4: Keep moving backward before the original transition took place. */
+
+		for (count = 0; (count < 5); count++) {
+			phaseControl = (0x3F & (phaseControl - 1));
+			reg32_write(&pChipcHw->VPMClock, (pChipcHw->VPMClock & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT));
+			/* Wait atleast 20 ns */
+			udelay(1);
+			/* Toggle the LOAD_CH after phase control is written. */
+			pChipcHw->VPMClock ^= chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+			phaseValue = pChipcHw->VPMClock;
+			/* Count number of adjustment made */
+			adjustCount++;
+		}
+
+		if (adjustCount >= MAX_PHASE_ADJUST_COUNT) {
+			/* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */
+			return -1;
+		}
+
+		if ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0) {
+			/* Detected false transition */
+			continue;
+		}
+
+		/* Step 5: Re discover the valid transition */
+
+		do {
+			/* Store previous value of phase comparator */
+			prevPhaseComp = phaseValue;
+			/* Change the value of PH_CTRL. */
+			reg32_write(&pChipcHw->VPMClock, (pChipcHw->VPMClock & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT));
+			/* Wait atleast 20 ns */
+			udelay(1);
+			/* Toggle the LOAD_CH after phase control is written. */
+			pChipcHw->VPMClock ^=
+			    chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+			/* Read the contents of  VPM Clock resgister. */
+			phaseValue = pChipcHw->VPMClock;
+
+			if ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0x0) {
+				phaseControl = (0x3F & (phaseControl - 1));
+			} else {
+				/* Increment to the Phase count value for next write, if Phase is not stable. */
+				phaseControl = (0x3F & (phaseControl + 1));
+			}
+
+			/* Count number of adjustment made */
+			adjustCount++;
+		} while (((prevPhaseComp == (phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP)) || ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) != 0x0)) && (adjustCount < MAX_PHASE_ADJUST_COUNT));
+
+		if (adjustCount >= MAX_PHASE_ADJUST_COUNT) {
+			/* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries  */
+			return -1;
+		} else {
+			/* Valid phase must have detected */
+			break;
+		}
+	}
+
+	/* For VPM Phase should be perfectly aligned. */
+	phaseControl = (((pChipcHw->VPMClock >> chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT) - 1) & 0x3F);
+	{
+		REG_LOCAL_IRQ_SAVE;
+
+		pChipcHw->VPMClock = (pChipcHw->VPMClock & ~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT);
+		/* Load new phase value */
+		pChipcHw->VPMClock ^= chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+
+		REG_LOCAL_IRQ_RESTORE;
+	}
+	/* Return the status */
+	return (int)adjustCount;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Set VPM clock in sync with BUS clock
+*
+*  This function does the phase adjustment between VPM and BUS clock
+*
+*  @return >= 0 : On success (# of adjustment required)
+*            -1 : On failure
+*
+*/
+/****************************************************************************/
+int chipcHw_vpmPhaseAlign(void)
+{
+
+	if (chipcHw_getChipRevisionNumber() == chipcHw_REV_NUMBER_A0) {
+		return vpmPhaseAlignA0();
+	} else {
+		uint32_t phaseControl = chipcHw_getVpmPhaseControl();
+		uint32_t phaseValue = 0;
+		int adjustCount = 0;
+
+		/* Disable VPM access */
+		pChipcHw->Spare1 &= ~chipcHw_REG_SPARE1_VPM_BUS_ACCESS_ENABLE;
+		/* Disable HW VPM phase alignment  */
+		chipcHw_vpmHwPhaseAlignDisable();
+		/* Enable SW VPM phase alignment  */
+		chipcHw_vpmSwPhaseAlignEnable();
+		/* Adjust VPM phase */
+		while (adjustCount < MAX_PHASE_ADJUST_COUNT) {
+			phaseValue = chipcHw_getVpmHwPhaseAlignStatus();
+
+			/* Adjust phase control value */
+			if (phaseValue > 0xF) {
+				/* Increment phase control value */
+				phaseControl++;
+			} else if (phaseValue < 0xF) {
+				/* Decrement phase control value */
+				phaseControl--;
+			} else {
+				/* Enable VPM access */
+				pChipcHw->Spare1 |= chipcHw_REG_SPARE1_VPM_BUS_ACCESS_ENABLE;
+				/* Return adjust count */
+				return adjustCount;
+			}
+			/* Change the value of PH_CTRL. */
+			reg32_write(&pChipcHw->VPMClock, (pChipcHw->VPMClock & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT));
+			/* Wait atleast 20 ns */
+			udelay(1);
+			/* Toggle the LOAD_CH after phase control is written. */
+			pChipcHw->VPMClock ^= chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE;
+			/* Count adjustment */
+			adjustCount++;
+		}
+	}
+
+	/* Disable VPM access */
+	pChipcHw->Spare1 &= ~chipcHw_REG_SPARE1_VPM_BUS_ACCESS_ENABLE;
+	return -1;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Local Divide function
+*
+*  This function does the divide
+*
+*  @return divide value
+*
+*/
+/****************************************************************************/
+static int chipcHw_divide(int num, int denom)
+{
+	int r;
+	int t = 1;
+
+	/* Shift denom and t up to the largest value to optimize algorithm */
+	/* t contains the units of each divide */
+	while ((denom & 0x40000000) == 0) {	/* fails if denom=0 */
+		denom = denom << 1;
+		t = t << 1;
+	}
+
+	/* Intialize the result */
+	r = 0;
+
+	do {
+		/* Determine if there exists a positive remainder */
+		if ((num - denom) >= 0) {
+			/* Accumlate t to the result and calculate a new remainder */
+			num = num - denom;
+			r = r + t;
+		}
+		/* Continue to shift denom and shift t down to 0 */
+		denom = denom >> 1;
+		t = t >> 1;
+	} while (t != 0);
+
+	return r;
+}
diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c
new file mode 100644
index 00000000000..367df75d4bb
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c
@@ -0,0 +1,293 @@
+/*****************************************************************************
+* Copyright 2003 - 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/****************************************************************************/
+/**
+*  @file    chipcHw_init.c
+*
+*  @brief   Low level CHIPC PLL configuration functions
+*
+*  @note
+*
+*   These routines provide basic PLL controlling functionality only.
+*/
+/****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <csp/errno.h>
+#include <csp/stdint.h>
+#include <csp/module.h>
+
+#include <mach/csp/chipcHw_def.h>
+#include <mach/csp/chipcHw_inline.h>
+
+#include <csp/reg.h>
+#include <csp/delay.h>
+/* ---- Private Constants and Types --------------------------------------- */
+
+/*
+    Calculation for NDIV_i to obtain VCO frequency
+    -----------------------------------------------
+
+	Freq_vco = Freq_ref * (P2 / P1) * (PLL_NDIV_i + PLL_NDIV_f)
+	for Freq_vco = VCO_FREQ_MHz
+		Freq_ref = chipcHw_XTAL_FREQ_Hz
+		PLL_P1 = PLL_P2 = 1
+		and
+		PLL_NDIV_f = 0
+
+	We get:
+		PLL_NDIV_i = Freq_vco / Freq_ref = VCO_FREQ_MHz / chipcHw_XTAL_FREQ_Hz
+
+    Calculation for PLL MDIV to obtain frequency Freq_x for channel x
+    -----------------------------------------------------------------
+		Freq_x = chipcHw_XTAL_FREQ_Hz * PLL_NDIV_i / PLL_MDIV_x = VCO_FREQ_MHz / PLL_MDIV_x
+
+		PLL_MDIV_x = VCO_FREQ_MHz / Freq_x
+*/
+
+/* ---- Private Variables ------------------------------------------------- */
+/****************************************************************************/
+/**
+*  @brief  Initializes the PLL2
+*
+*  This function initializes the PLL2
+*
+*/
+/****************************************************************************/
+void chipcHw_pll2Enable(uint32_t vcoFreqHz)
+{
+	uint32_t pllPreDivider2 = 0;
+
+	{
+		REG_LOCAL_IRQ_SAVE;
+		pChipcHw->PLLConfig2 =
+		    chipcHw_REG_PLL_CONFIG_D_RESET |
+		    chipcHw_REG_PLL_CONFIG_A_RESET;
+
+		pllPreDivider2 = chipcHw_REG_PLL_PREDIVIDER_POWER_DOWN |
+		    chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER |
+		    (chipcHw_REG_PLL_PREDIVIDER_NDIV_i(vcoFreqHz) <<
+		     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) |
+		    (chipcHw_REG_PLL_PREDIVIDER_P1 <<
+		     chipcHw_REG_PLL_PREDIVIDER_P1_SHIFT) |
+		    (chipcHw_REG_PLL_PREDIVIDER_P2 <<
+		     chipcHw_REG_PLL_PREDIVIDER_P2_SHIFT);
+
+		/* Enable CHIPC registers to control the PLL */
+		pChipcHw->PLLStatus |= chipcHw_REG_PLL_STATUS_CONTROL_ENABLE;
+
+		/* Set pre divider to get desired VCO frequency */
+		pChipcHw->PLLPreDivider2 = pllPreDivider2;
+		/* Set NDIV Frac */
+		pChipcHw->PLLDivider2 = chipcHw_REG_PLL_DIVIDER_NDIV_f;
+
+		/* This has to be removed once the default values are fixed for PLL2. */
+		pChipcHw->PLLControl12 = 0x38000700;
+		pChipcHw->PLLControl22 = 0x00000015;
+
+		/* Reset PLL2 */
+		if (vcoFreqHz > chipcHw_REG_PLL_CONFIG_VCO_SPLIT_FREQ) {
+			pChipcHw->PLLConfig2 = chipcHw_REG_PLL_CONFIG_D_RESET |
+			    chipcHw_REG_PLL_CONFIG_A_RESET |
+			    chipcHw_REG_PLL_CONFIG_VCO_1601_3200 |
+			    chipcHw_REG_PLL_CONFIG_POWER_DOWN;
+		} else {
+			pChipcHw->PLLConfig2 = chipcHw_REG_PLL_CONFIG_D_RESET |
+			    chipcHw_REG_PLL_CONFIG_A_RESET |
+			    chipcHw_REG_PLL_CONFIG_VCO_800_1600 |
+			    chipcHw_REG_PLL_CONFIG_POWER_DOWN;
+		}
+		REG_LOCAL_IRQ_RESTORE;
+	}
+
+	/* Insert certain amount of delay before deasserting ARESET. */
+	udelay(1);
+
+	{
+		REG_LOCAL_IRQ_SAVE;
+		/* Remove analog reset and Power on the PLL */
+		pChipcHw->PLLConfig2 &=
+		    ~(chipcHw_REG_PLL_CONFIG_A_RESET |
+		      chipcHw_REG_PLL_CONFIG_POWER_DOWN);
+
+		REG_LOCAL_IRQ_RESTORE;
+
+	}
+
+	/* Wait until PLL is locked */
+	while (!(pChipcHw->PLLStatus2 & chipcHw_REG_PLL_STATUS_LOCKED))
+		;
+
+	{
+		REG_LOCAL_IRQ_SAVE;
+		/* Remove digital reset */
+		pChipcHw->PLLConfig2 &= ~chipcHw_REG_PLL_CONFIG_D_RESET;
+
+		REG_LOCAL_IRQ_RESTORE;
+	}
+}
+
+EXPORT_SYMBOL(chipcHw_pll2Enable);
+
+/****************************************************************************/
+/**
+*  @brief  Initializes the PLL1
+*
+*  This function initializes the PLL1
+*
+*/
+/****************************************************************************/
+void chipcHw_pll1Enable(uint32_t vcoFreqHz, chipcHw_SPREAD_SPECTRUM_e ssSupport)
+{
+	uint32_t pllPreDivider = 0;
+
+	{
+		REG_LOCAL_IRQ_SAVE;
+
+		pChipcHw->PLLConfig =
+		    chipcHw_REG_PLL_CONFIG_D_RESET |
+		    chipcHw_REG_PLL_CONFIG_A_RESET;
+		/* Setting VCO frequency */
+		if (ssSupport == chipcHw_SPREAD_SPECTRUM_ALLOW) {
+			pllPreDivider =
+			    chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_MASH_1_8 |
+			    ((chipcHw_REG_PLL_PREDIVIDER_NDIV_i(vcoFreqHz) -
+			      1) << chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) |
+			    (chipcHw_REG_PLL_PREDIVIDER_P1 <<
+			     chipcHw_REG_PLL_PREDIVIDER_P1_SHIFT) |
+			    (chipcHw_REG_PLL_PREDIVIDER_P2 <<
+			     chipcHw_REG_PLL_PREDIVIDER_P2_SHIFT);
+		} else {
+			pllPreDivider = chipcHw_REG_PLL_PREDIVIDER_POWER_DOWN |
+			    chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER |
+			    (chipcHw_REG_PLL_PREDIVIDER_NDIV_i(vcoFreqHz) <<
+			     chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) |
+			    (chipcHw_REG_PLL_PREDIVIDER_P1 <<
+			     chipcHw_REG_PLL_PREDIVIDER_P1_SHIFT) |
+			    (chipcHw_REG_PLL_PREDIVIDER_P2 <<
+			     chipcHw_REG_PLL_PREDIVIDER_P2_SHIFT);
+		}
+
+		/* Enable CHIPC registers to control the PLL */
+		pChipcHw->PLLStatus |= chipcHw_REG_PLL_STATUS_CONTROL_ENABLE;
+
+		/* Set pre divider to get desired VCO frequency */
+		pChipcHw->PLLPreDivider = pllPreDivider;
+		/* Set NDIV Frac */
+		if (ssSupport == chipcHw_SPREAD_SPECTRUM_ALLOW) {
+			pChipcHw->PLLDivider = chipcHw_REG_PLL_DIVIDER_M1DIV |
+			    chipcHw_REG_PLL_DIVIDER_NDIV_f_SS;
+		} else {
+			pChipcHw->PLLDivider = chipcHw_REG_PLL_DIVIDER_M1DIV |
+			    chipcHw_REG_PLL_DIVIDER_NDIV_f;
+		}
+
+		/* Reset PLL1 */
+		if (vcoFreqHz > chipcHw_REG_PLL_CONFIG_VCO_SPLIT_FREQ) {
+			pChipcHw->PLLConfig = chipcHw_REG_PLL_CONFIG_D_RESET |
+			    chipcHw_REG_PLL_CONFIG_A_RESET |
+			    chipcHw_REG_PLL_CONFIG_VCO_1601_3200 |
+			    chipcHw_REG_PLL_CONFIG_POWER_DOWN;
+		} else {
+			pChipcHw->PLLConfig = chipcHw_REG_PLL_CONFIG_D_RESET |
+			    chipcHw_REG_PLL_CONFIG_A_RESET |
+			    chipcHw_REG_PLL_CONFIG_VCO_800_1600 |
+			    chipcHw_REG_PLL_CONFIG_POWER_DOWN;
+		}
+
+		REG_LOCAL_IRQ_RESTORE;
+
+		/* Insert certain amount of delay before deasserting ARESET. */
+		udelay(1);
+
+		{
+			REG_LOCAL_IRQ_SAVE;
+			/* Remove analog reset and Power on the PLL */
+			pChipcHw->PLLConfig &=
+			    ~(chipcHw_REG_PLL_CONFIG_A_RESET |
+			      chipcHw_REG_PLL_CONFIG_POWER_DOWN);
+			REG_LOCAL_IRQ_RESTORE;
+		}
+
+		/* Wait until PLL is locked */
+		while (!(pChipcHw->PLLStatus & chipcHw_REG_PLL_STATUS_LOCKED)
+		       || !(pChipcHw->
+			    PLLStatus2 & chipcHw_REG_PLL_STATUS_LOCKED))
+			;
+
+		/* Remove digital reset */
+		{
+			REG_LOCAL_IRQ_SAVE;
+			pChipcHw->PLLConfig &= ~chipcHw_REG_PLL_CONFIG_D_RESET;
+			REG_LOCAL_IRQ_RESTORE;
+		}
+	}
+}
+
+EXPORT_SYMBOL(chipcHw_pll1Enable);
+
+/****************************************************************************/
+/**
+*  @brief  Initializes the chipc module
+*
+*  This function initializes the PLLs and core system clocks
+*
+*/
+/****************************************************************************/
+
+void chipcHw_Init(chipcHw_INIT_PARAM_t *initParam	/*  [ IN ] Misc chip initialization parameter */
+    ) {
+#if !(defined(__KERNEL__) && !defined(STANDALONE))
+	delay_init();
+#endif
+
+	/* Do not program PLL, when warm reset */
+	if (!(chipcHw_getStickyBits() & chipcHw_REG_STICKY_CHIP_WARM_RESET)) {
+		chipcHw_pll1Enable(initParam->pllVcoFreqHz,
+				   initParam->ssSupport);
+		chipcHw_pll2Enable(initParam->pll2VcoFreqHz);
+	} else {
+		/* Clear sticky bits */
+		chipcHw_clearStickyBits(chipcHw_REG_STICKY_CHIP_WARM_RESET);
+	}
+	/* Clear sticky bits */
+	chipcHw_clearStickyBits(chipcHw_REG_STICKY_CHIP_SOFT_RESET);
+
+	/* Before configuring the ARM clock, atleast we need to make sure BUS clock maintains the proper ratio with ARM clock */
+	pChipcHw->ACLKClock =
+	    (pChipcHw->
+	     ACLKClock & ~chipcHw_REG_ACLKClock_CLK_DIV_MASK) | (initParam->
+								 armBusRatio &
+								 chipcHw_REG_ACLKClock_CLK_DIV_MASK);
+
+	/* Set various core component frequencies. The order in which this is done is important for some. */
+	/* The RTBUS (DDR PHY) is derived from the BUS, and the BUS from the ARM, and VPM needs to know BUS */
+	/* frequency to find its ratio with the BUS.  Hence we must set the ARM first, followed by the BUS,  */
+	/* then VPM and RTBUS. */
+
+	chipcHw_setClockFrequency(chipcHw_CLOCK_ARM,
+				  initParam->busClockFreqHz *
+				  initParam->armBusRatio);
+	chipcHw_setClockFrequency(chipcHw_CLOCK_BUS, initParam->busClockFreqHz);
+	chipcHw_setClockFrequency(chipcHw_CLOCK_VPM,
+				  initParam->busClockFreqHz *
+				  initParam->vpmBusRatio);
+	chipcHw_setClockFrequency(chipcHw_CLOCK_DDR,
+				  initParam->busClockFreqHz *
+				  initParam->ddrBusRatio);
+	chipcHw_setClockFrequency(chipcHw_CLOCK_RTBUS,
+				  initParam->busClockFreqHz / 2);
+}
diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c
new file mode 100644
index 00000000000..2671d8896bb
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c
@@ -0,0 +1,124 @@
+/*****************************************************************************
+* Copyright 2003 - 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+#include <csp/stdint.h>
+#include <mach/csp/chipcHw_def.h>
+#include <mach/csp/chipcHw_inline.h>
+#include <csp/intcHw.h>
+#include <csp/cache.h>
+
+/* ---- Private Constants and Types --------------------------------------- */
+/* ---- Private Variables ------------------------------------------------- */
+void chipcHw_reset_run_from_aram(void);
+
+typedef void (*RUNFUNC) (void);
+
+/****************************************************************************/
+/**
+*  @brief   warmReset
+*
+*  @note warmReset configures the clocks which are not reset back to the state
+*   required to execute on reset.  To do so we need to copy the code into internal
+*   memory to change the ARM clock while we are not executing from DDR.
+*/
+/****************************************************************************/
+void chipcHw_reset(uint32_t mask)
+{
+	int i = 0;
+	RUNFUNC runFunc = (RUNFUNC) (unsigned long)MM_ADDR_IO_ARAM;
+
+	/* Disable all interrupts */
+	intcHw_irq_disable(INTCHW_INTC0, 0xffffffff);
+	intcHw_irq_disable(INTCHW_INTC1, 0xffffffff);
+	intcHw_irq_disable(INTCHW_SINTC, 0xffffffff);
+
+	{
+		REG_LOCAL_IRQ_SAVE;
+		if (mask & chipcHw_REG_SOFT_RESET_CHIP_SOFT) {
+			chipcHw_softReset(chipcHw_REG_SOFT_RESET_CHIP_SOFT);
+		}
+		/* Bypass the PLL clocks before reboot */
+		pChipcHw->UARTClock |= chipcHw_REG_PLL_CLOCK_BYPASS_SELECT;
+		pChipcHw->SPIClock |= chipcHw_REG_PLL_CLOCK_BYPASS_SELECT;
+
+		/* Copy the chipcHw_warmReset_run_from_aram function into ARAM */
+		do {
+			((uint32_t *) MM_IO_BASE_ARAM)[i] =
+			    ((uint32_t *) &chipcHw_reset_run_from_aram)[i];
+			i++;
+		} while (((uint32_t *) MM_IO_BASE_ARAM)[i - 1] != 0xe1a0f00f);	/* 0xe1a0f00f == asm ("mov r15, r15"); */
+
+		CSP_CACHE_FLUSH_ALL;
+
+		/* run the function from ARAM */
+		runFunc();
+
+		/* Code will never get here, but include it to balance REG_LOCAL_IRQ_SAVE above */
+		REG_LOCAL_IRQ_RESTORE;
+	}
+}
+
+/* This function must run from internal memory */
+void chipcHw_reset_run_from_aram(void)
+{
+/* Make sure, pipeline is filled with instructions coming from ARAM */
+__asm (" nop                                                            \n\t"
+		" nop                                                            \n\t"
+#if defined(__KERNEL__) && !defined(STANDALONE)
+		" MRC      p15,#0x0,r0,c1,c0,#0                                  \n\t"
+		" BIC      r0,r0,#0xd                                            \n\t"
+		" MCR      p15,#0x0,r0,c1,c0,#0                                  \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+#endif
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+/* Bypass the ARM clock and switch to XTAL clock */
+		" MOV      r2,#0x80000000                                        \n\t"
+		" LDR      r3,[r2,#8]                                            \n\t"
+		" ORR      r3,r3,#0x20000                                        \n\t"
+		" STR      r3,[r2,#8]                                            \n\t"
+
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+		" nop                                                            \n\t"
+/* Issue reset */
+		" MOV      r3,#0x2                                               \n\t"
+		" STR      r3,[r2,#0x80]                                         \n\t"
+/* End here */
+		" MOV      pc,pc                                                 \n\t");
+/* 0xe1a0f00f ==  asm ("mov r15, r15"); */
+}
diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c
new file mode 100644
index 00000000000..54ad964fe94
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c
@@ -0,0 +1,64 @@
+/*****************************************************************************
+* Copyright 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+/****************************************************************************/
+/**
+*  @file    chipcHw_str.c
+*
+*  @brief   Contains strings which are useful to linux and csp
+*
+*  @note
+*/
+/****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <mach/csp/chipcHw_inline.h>
+
+/* ---- Private Constants and Types --------------------------------------- */
+
+static const char *gMuxStr[] = {
+	"GPIO",			/* 0 */
+	"KeyPad",		/* 1 */
+	"I2C-Host",		/* 2 */
+	"SPI",			/* 3 */
+	"Uart",			/* 4 */
+	"LED-Mtx-P",		/* 5 */
+	"LED-Mtx-S",		/* 6 */
+	"SDIO-0",		/* 7 */
+	"SDIO-1",		/* 8 */
+	"PCM",			/* 9 */
+	"I2S",			/* 10 */
+	"ETM",			/* 11 */
+	"Debug",		/* 12 */
+	"Misc",			/* 13 */
+	"0xE",			/* 14 */
+	"0xF",			/* 15 */
+};
+
+/****************************************************************************/
+/**
+*  @brief   Retrieves a string representation of the mux setting for a pin.
+*
+*  @return  Pointer to a character string.
+*/
+/****************************************************************************/
+
+const char *chipcHw_getGpioPinFunctionStr(int pin)
+{
+	if ((pin < 0) || (pin >= chipcHw_GPIO_COUNT)) {
+		return "";
+	}
+
+	return gMuxStr[chipcHw_getGpioPinFunction(pin)];
+}
diff --git a/arch/arm/mach-bcmring/csp/dmac/Makefile b/arch/arm/mach-bcmring/csp/dmac/Makefile
new file mode 100644
index 00000000000..fb1104fe56b
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/dmac/Makefile
@@ -0,0 +1 @@
+obj-y += dmacHw.o dmacHw_extra.o
\ No newline at end of file
diff --git a/arch/arm/mach-bcmring/csp/dmac/dmacHw.c b/arch/arm/mach-bcmring/csp/dmac/dmacHw.c
new file mode 100644
index 00000000000..7b9bac2d79a
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/dmac/dmacHw.c
@@ -0,0 +1,917 @@
+/*****************************************************************************
+* Copyright 2003 - 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/****************************************************************************/
+/**
+*  @file    dmacHw.c
+*
+*  @brief   Low level DMA controller driver routines
+*
+*  @note
+*
+*   These routines provide basic DMA functionality only.
+*/
+/****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+#include <csp/stdint.h>
+#include <csp/string.h>
+#include <stddef.h>
+
+#include <csp/dmacHw.h>
+#include <mach/csp/dmacHw_reg.h>
+#include <mach/csp/dmacHw_priv.h>
+#include <mach/csp/chipcHw_inline.h>
+
+/* ---- External Function Prototypes ------------------------------------- */
+
+/* Allocate DMA control blocks */
+dmacHw_CBLK_t dmacHw_gCblk[dmacHw_MAX_CHANNEL_COUNT];
+
+uint32_t dmaChannelCount_0 = dmacHw_MAX_CHANNEL_COUNT / 2;
+uint32_t dmaChannelCount_1 = dmacHw_MAX_CHANNEL_COUNT / 2;
+
+/****************************************************************************/
+/**
+*  @brief   Get maximum FIFO for a DMA channel
+*
+*  @return  Maximum allowable FIFO size
+*
+*
+*/
+/****************************************************************************/
+static uint32_t GetFifoSize(dmacHw_HANDLE_t handle	/*   [ IN ] DMA Channel handle */
+    ) {
+	uint32_t val = 0;
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	dmacHw_MISC_t *pMiscReg =
+	    (dmacHw_MISC_t *) dmacHw_REG_MISC_BASE(pCblk->module);
+
+	switch (pCblk->channel) {
+	case 0:
+		val = (pMiscReg->CompParm2.lo & 0x70000000) >> 28;
+		break;
+	case 1:
+		val = (pMiscReg->CompParm3.hi & 0x70000000) >> 28;
+		break;
+	case 2:
+		val = (pMiscReg->CompParm3.lo & 0x70000000) >> 28;
+		break;
+	case 3:
+		val = (pMiscReg->CompParm4.hi & 0x70000000) >> 28;
+		break;
+	case 4:
+		val = (pMiscReg->CompParm4.lo & 0x70000000) >> 28;
+		break;
+	case 5:
+		val = (pMiscReg->CompParm5.hi & 0x70000000) >> 28;
+		break;
+	case 6:
+		val = (pMiscReg->CompParm5.lo & 0x70000000) >> 28;
+		break;
+	case 7:
+		val = (pMiscReg->CompParm6.hi & 0x70000000) >> 28;
+		break;
+	}
+
+	if (val <= 0x4) {
+		return 8 << val;
+	} else {
+		dmacHw_ASSERT(0);
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Program channel register to initiate transfer
+*
+*  @return  void
+*
+*
+*  @note
+*     - Descriptor buffer MUST ALWAYS be flushed before calling this function
+*     - This function should also be called from ISR to program the channel with
+*       pending descriptors
+*/
+/****************************************************************************/
+void dmacHw_initiateTransfer(dmacHw_HANDLE_t handle,	/*   [ IN ] DMA Channel handle */
+			     dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+			     void *pDescriptor	/*   [ IN ] Descriptor buffer */
+    ) {
+	dmacHw_DESC_RING_t *pRing;
+	dmacHw_DESC_t *pProg;
+	dmacHw_CBLK_t *pCblk;
+
+	pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	pRing = dmacHw_GET_DESC_RING(pDescriptor);
+
+	if (CHANNEL_BUSY(pCblk->module, pCblk->channel)) {
+		/* Not safe yet to program the channel */
+		return;
+	}
+
+	if (pCblk->varDataStarted) {
+		if (pCblk->descUpdated) {
+			pCblk->descUpdated = 0;
+			pProg =
+			    (dmacHw_DESC_t *) ((uint32_t)
+					       dmacHw_REG_LLP(pCblk->module,
+							      pCblk->channel) +
+					       pRing->virt2PhyOffset);
+
+			/* Load descriptor if not loaded */
+			if (!(pProg->ctl.hi & dmacHw_REG_CTL_DONE)) {
+				dmacHw_SET_SAR(pCblk->module, pCblk->channel,
+					       pProg->sar);
+				dmacHw_SET_DAR(pCblk->module, pCblk->channel,
+					       pProg->dar);
+				dmacHw_REG_CTL_LO(pCblk->module,
+						  pCblk->channel) =
+				    pProg->ctl.lo;
+				dmacHw_REG_CTL_HI(pCblk->module,
+						  pCblk->channel) =
+				    pProg->ctl.hi;
+			} else if (pProg == (dmacHw_DESC_t *) pRing->pEnd->llp) {
+				/* Return as end descriptor is processed */
+				return;
+			} else {
+				dmacHw_ASSERT(0);
+			}
+		} else {
+			return;
+		}
+	} else {
+		if (pConfig->transferMode == dmacHw_TRANSFER_MODE_PERIODIC) {
+			/* Do not make a single chain, rather process one descriptor at a time */
+			pProg = pRing->pHead;
+			/* Point to the next descriptor for next iteration */
+			dmacHw_NEXT_DESC(pRing, pHead);
+		} else {
+			/* Return if no more pending descriptor */
+			if (pRing->pEnd == NULL) {
+				return;
+			}
+
+			pProg = pRing->pProg;
+			if (pConfig->transferMode ==
+			    dmacHw_TRANSFER_MODE_CONTINUOUS) {
+				/* Make sure a complete ring can be formed */
+				dmacHw_ASSERT((dmacHw_DESC_t *) pRing->pEnd->
+					      llp == pRing->pProg);
+				/* Make sure pProg pointing to the pHead */
+				dmacHw_ASSERT((dmacHw_DESC_t *) pRing->pProg ==
+					      pRing->pHead);
+				/* Make a complete ring */
+				do {
+					pRing->pProg->ctl.lo |=
+					    (dmacHw_REG_CTL_LLP_DST_EN |
+					     dmacHw_REG_CTL_LLP_SRC_EN);
+					pRing->pProg =
+					    (dmacHw_DESC_t *) pRing->pProg->llp;
+				} while (pRing->pProg != pRing->pHead);
+			} else {
+				/* Make a single long chain */
+				while (pRing->pProg != pRing->pEnd) {
+					pRing->pProg->ctl.lo |=
+					    (dmacHw_REG_CTL_LLP_DST_EN |
+					     dmacHw_REG_CTL_LLP_SRC_EN);
+					pRing->pProg =
+					    (dmacHw_DESC_t *) pRing->pProg->llp;
+				}
+			}
+		}
+
+		/* Program the channel registers */
+		dmacHw_SET_SAR(pCblk->module, pCblk->channel, pProg->sar);
+		dmacHw_SET_DAR(pCblk->module, pCblk->channel, pProg->dar);
+		dmacHw_SET_LLP(pCblk->module, pCblk->channel,
+			       (uint32_t) pProg - pRing->virt2PhyOffset);
+		dmacHw_REG_CTL_LO(pCblk->module, pCblk->channel) =
+		    pProg->ctl.lo;
+		dmacHw_REG_CTL_HI(pCblk->module, pCblk->channel) =
+		    pProg->ctl.hi;
+		if (pRing->pEnd) {
+			/* Remember the descriptor to use next */
+			pRing->pProg = (dmacHw_DESC_t *) pRing->pEnd->llp;
+		}
+		/* Indicate no more pending descriptor  */
+		pRing->pEnd = (dmacHw_DESC_t *) NULL;
+	}
+	/* Start DMA operation */
+	dmacHw_DMA_START(pCblk->module, pCblk->channel);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Initializes DMA
+*
+*  This function initializes DMA CSP driver
+*
+*  @note
+*     Must be called before using any DMA channel
+*/
+/****************************************************************************/
+void dmacHw_initDma(void)
+{
+
+	uint32_t i = 0;
+
+	dmaChannelCount_0 = dmacHw_GET_NUM_CHANNEL(0);
+	dmaChannelCount_1 = dmacHw_GET_NUM_CHANNEL(1);
+
+	/* Enable access to the DMA block */
+	chipcHw_busInterfaceClockEnable(chipcHw_REG_BUS_CLOCK_DMAC0);
+	chipcHw_busInterfaceClockEnable(chipcHw_REG_BUS_CLOCK_DMAC1);
+
+	if ((dmaChannelCount_0 + dmaChannelCount_1) > dmacHw_MAX_CHANNEL_COUNT) {
+		dmacHw_ASSERT(0);
+	}
+
+	memset((void *)dmacHw_gCblk, 0,
+	       sizeof(dmacHw_CBLK_t) * (dmaChannelCount_0 + dmaChannelCount_1));
+	for (i = 0; i < dmaChannelCount_0; i++) {
+		dmacHw_gCblk[i].module = 0;
+		dmacHw_gCblk[i].channel = i;
+	}
+	for (i = 0; i < dmaChannelCount_1; i++) {
+		dmacHw_gCblk[i + dmaChannelCount_0].module = 1;
+		dmacHw_gCblk[i + dmaChannelCount_0].channel = i;
+	}
+}
+
+/****************************************************************************/
+/**
+*  @brief   Exit function for  DMA
+*
+*  This function isolates DMA from the system
+*
+*/
+/****************************************************************************/
+void dmacHw_exitDma(void)
+{
+	/* Disable access to the DMA block */
+	chipcHw_busInterfaceClockDisable(chipcHw_REG_BUS_CLOCK_DMAC0);
+	chipcHw_busInterfaceClockDisable(chipcHw_REG_BUS_CLOCK_DMAC1);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Gets a handle to a DMA channel
+*
+*  This function returns a handle, representing a control block of a particular DMA channel
+*
+*  @return  -1       - On Failure
+*            handle  - On Success, representing a channel control block
+*
+*  @note
+*     None  Channel ID must be created using "dmacHw_MAKE_CHANNEL_ID" macro
+*/
+/****************************************************************************/
+dmacHw_HANDLE_t dmacHw_getChannelHandle(dmacHw_ID_t channelId	/* [ IN ] DMA Channel Id */
+    ) {
+	int idx;
+
+	switch ((channelId >> 8)) {
+	case 0:
+		dmacHw_ASSERT((channelId & 0xff) < dmaChannelCount_0);
+		idx = (channelId & 0xff);
+		break;
+	case 1:
+		dmacHw_ASSERT((channelId & 0xff) < dmaChannelCount_1);
+		idx = dmaChannelCount_0 + (channelId & 0xff);
+		break;
+	default:
+		dmacHw_ASSERT(0);
+		return (dmacHw_HANDLE_t) -1;
+	}
+
+	return dmacHw_CBLK_TO_HANDLE(&dmacHw_gCblk[idx]);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Initializes a DMA channel for use
+*
+*  This function initializes and resets a DMA channel for use
+*
+*  @return  -1     - On Failure
+*            0     - On Success
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+int dmacHw_initChannel(dmacHw_HANDLE_t handle	/*   [ IN ] DMA Channel handle */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	int module = pCblk->module;
+	int channel = pCblk->channel;
+
+	/* Reinitialize the control block */
+	memset((void *)pCblk, 0, sizeof(dmacHw_CBLK_t));
+	pCblk->module = module;
+	pCblk->channel = channel;
+
+	/* Enable DMA controller */
+	dmacHw_DMA_ENABLE(pCblk->module);
+	/* Reset DMA channel */
+	dmacHw_RESET_CONTROL_LO(pCblk->module, pCblk->channel);
+	dmacHw_RESET_CONTROL_HI(pCblk->module, pCblk->channel);
+	dmacHw_RESET_CONFIG_LO(pCblk->module, pCblk->channel);
+	dmacHw_RESET_CONFIG_HI(pCblk->module, pCblk->channel);
+
+	/* Clear all raw interrupt status */
+	dmacHw_TRAN_INT_CLEAR(pCblk->module, pCblk->channel);
+	dmacHw_BLOCK_INT_CLEAR(pCblk->module, pCblk->channel);
+	dmacHw_ERROR_INT_CLEAR(pCblk->module, pCblk->channel);
+
+	/* Mask event specific interrupts */
+	dmacHw_TRAN_INT_DISABLE(pCblk->module, pCblk->channel);
+	dmacHw_BLOCK_INT_DISABLE(pCblk->module, pCblk->channel);
+	dmacHw_STRAN_INT_DISABLE(pCblk->module, pCblk->channel);
+	dmacHw_DTRAN_INT_DISABLE(pCblk->module, pCblk->channel);
+	dmacHw_ERROR_INT_DISABLE(pCblk->module, pCblk->channel);
+
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief  Finds amount of memory required to form a descriptor ring
+*
+*
+*  @return   Number of bytes required to form a descriptor ring
+*
+*
+*/
+/****************************************************************************/
+uint32_t dmacHw_descriptorLen(uint32_t descCnt	/* [ IN ] Number of descriptor in the ring */
+    ) {
+	/* Need extra 4 byte to ensure 32 bit alignment  */
+	return (descCnt * sizeof(dmacHw_DESC_t)) + sizeof(dmacHw_DESC_RING_t) +
+		sizeof(uint32_t);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Initializes descriptor ring
+*
+*  This function will initializes the descriptor ring of a DMA channel
+*
+*
+*  @return   -1 - On failure
+*             0 - On success
+*  @note
+*     - "len" parameter should be obtained from "dmacHw_descriptorLen"
+*     - Descriptor buffer MUST be 32 bit aligned and uncached as it is
+*       accessed by ARM and DMA
+*/
+/****************************************************************************/
+int dmacHw_initDescriptor(void *pDescriptorVirt,	/*  [ IN ] Virtual address of uncahced buffer allocated to form descriptor ring */
+			  uint32_t descriptorPhyAddr,	/*  [ IN ] Physical address of pDescriptorVirt (descriptor buffer) */
+			  uint32_t len,	/*  [ IN ] Size of the pBuf */
+			  uint32_t num	/*  [ IN ] Number of descriptor in the ring */
+    ) {
+	uint32_t i;
+	dmacHw_DESC_RING_t *pRing;
+	dmacHw_DESC_t *pDesc;
+
+	/* Check the alignment of the descriptor */
+	if ((uint32_t) pDescriptorVirt & 0x00000003) {
+		dmacHw_ASSERT(0);
+		return -1;
+	}
+
+	/* Check if enough space has been allocated for descriptor ring */
+	if (len < dmacHw_descriptorLen(num)) {
+		return -1;
+	}
+
+	pRing = dmacHw_GET_DESC_RING(pDescriptorVirt);
+	pRing->pHead =
+	    (dmacHw_DESC_t *) ((uint32_t) pRing + sizeof(dmacHw_DESC_RING_t));
+	pRing->pFree = pRing->pTail = pRing->pEnd = pRing->pHead;
+	pRing->pProg = dmacHw_DESC_INIT;
+	/* Initialize link item chain, starting from the head */
+	pDesc = pRing->pHead;
+	/* Find the offset between virtual to physical address */
+	pRing->virt2PhyOffset = (uint32_t) pDescriptorVirt - descriptorPhyAddr;
+
+	/* Form the descriptor ring */
+	for (i = 0; i < num - 1; i++) {
+		/* Clear link list item */
+		memset((void *)pDesc, 0, sizeof(dmacHw_DESC_t));
+		/* Point to the next item in the physical address */
+		pDesc->llpPhy = (uint32_t) (pDesc + 1) - pRing->virt2PhyOffset;
+		/* Point to the next item in the virtual address */
+		pDesc->llp = (uint32_t) (pDesc + 1);
+		/* Mark descriptor is ready to use */
+		pDesc->ctl.hi = dmacHw_DESC_FREE;
+		/* Look into next link list item */
+		pDesc++;
+	}
+
+	/* Clear last link list item */
+	memset((void *)pDesc, 0, sizeof(dmacHw_DESC_t));
+	/* Last item pointing to the first item in the
+	   physical address to complete the ring */
+	pDesc->llpPhy = (uint32_t) pRing->pHead - pRing->virt2PhyOffset;
+	/* Last item pointing to the first item in the
+	   virtual address to complete the ring
+	 */
+	pDesc->llp = (uint32_t) pRing->pHead;
+	/* Mark descriptor is ready to use */
+	pDesc->ctl.hi = dmacHw_DESC_FREE;
+	/* Set the number of descriptors in the ring */
+	pRing->num = num;
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Configure DMA channel
+*
+*  @return  0  : On success
+*           -1 : On failure
+*/
+/****************************************************************************/
+int dmacHw_configChannel(dmacHw_HANDLE_t handle,	/*   [ IN ] DMA Channel handle */
+			 dmacHw_CONFIG_t *pConfig	/*   [ IN ] Configuration settings */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	uint32_t cfgHigh = 0;
+	int srcTrSize;
+	int dstTrSize;
+
+	pCblk->varDataStarted = 0;
+	pCblk->userData = NULL;
+
+	/* Configure
+	   - Burst transaction when enough data in available in FIFO
+	   - AHB Access protection 1
+	   - Source and destination peripheral ports
+	 */
+	cfgHigh =
+	    dmacHw_REG_CFG_HI_FIFO_ENOUGH | dmacHw_REG_CFG_HI_AHB_HPROT_1 |
+	    dmacHw_SRC_PERI_INTF(pConfig->
+				 srcPeripheralPort) |
+	    dmacHw_DST_PERI_INTF(pConfig->dstPeripheralPort);
+	/* Set priority */
+	dmacHw_SET_CHANNEL_PRIORITY(pCblk->module, pCblk->channel,
+				    pConfig->channelPriority);
+
+	if (pConfig->dstStatusRegisterAddress != 0) {
+		/* Destination status update enable */
+		cfgHigh |= dmacHw_REG_CFG_HI_UPDATE_DST_STAT;
+		/* Configure status registers */
+		dmacHw_SET_DSTATAR(pCblk->module, pCblk->channel,
+				   pConfig->dstStatusRegisterAddress);
+	}
+
+	if (pConfig->srcStatusRegisterAddress != 0) {
+		/* Source status update enable */
+		cfgHigh |= dmacHw_REG_CFG_HI_UPDATE_SRC_STAT;
+		/* Source status update enable */
+		dmacHw_SET_SSTATAR(pCblk->module, pCblk->channel,
+				   pConfig->srcStatusRegisterAddress);
+	}
+	/* Configure the config high register */
+	dmacHw_GET_CONFIG_HI(pCblk->module, pCblk->channel) = cfgHigh;
+
+	/* Clear all raw interrupt status */
+	dmacHw_TRAN_INT_CLEAR(pCblk->module, pCblk->channel);
+	dmacHw_BLOCK_INT_CLEAR(pCblk->module, pCblk->channel);
+	dmacHw_ERROR_INT_CLEAR(pCblk->module, pCblk->channel);
+
+	/* Configure block interrupt */
+	if (pConfig->blockTransferInterrupt == dmacHw_INTERRUPT_ENABLE) {
+		dmacHw_BLOCK_INT_ENABLE(pCblk->module, pCblk->channel);
+	} else {
+		dmacHw_BLOCK_INT_DISABLE(pCblk->module, pCblk->channel);
+	}
+	/* Configure complete transfer interrupt */
+	if (pConfig->completeTransferInterrupt == dmacHw_INTERRUPT_ENABLE) {
+		dmacHw_TRAN_INT_ENABLE(pCblk->module, pCblk->channel);
+	} else {
+		dmacHw_TRAN_INT_DISABLE(pCblk->module, pCblk->channel);
+	}
+	/* Configure error interrupt */
+	if (pConfig->errorInterrupt == dmacHw_INTERRUPT_ENABLE) {
+		dmacHw_ERROR_INT_ENABLE(pCblk->module, pCblk->channel);
+	} else {
+		dmacHw_ERROR_INT_DISABLE(pCblk->module, pCblk->channel);
+	}
+	/* Configure gather register */
+	if (pConfig->srcGatherWidth) {
+		srcTrSize =
+		    dmacHw_GetTrWidthInBytes(pConfig->srcMaxTransactionWidth);
+		if (!
+		    ((pConfig->srcGatherWidth % srcTrSize)
+		     && (pConfig->srcGatherJump % srcTrSize))) {
+			dmacHw_REG_SGR_LO(pCblk->module, pCblk->channel) =
+			    ((pConfig->srcGatherWidth /
+			      srcTrSize) << 20) | (pConfig->srcGatherJump /
+						   srcTrSize);
+		} else {
+			return -1;
+		}
+	}
+	/* Configure scatter register */
+	if (pConfig->dstScatterWidth) {
+		dstTrSize =
+		    dmacHw_GetTrWidthInBytes(pConfig->dstMaxTransactionWidth);
+		if (!
+		    ((pConfig->dstScatterWidth % dstTrSize)
+		     && (pConfig->dstScatterJump % dstTrSize))) {
+			dmacHw_REG_DSR_LO(pCblk->module, pCblk->channel) =
+			    ((pConfig->dstScatterWidth /
+			      dstTrSize) << 20) | (pConfig->dstScatterJump /
+						   dstTrSize);
+		} else {
+			return -1;
+		}
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Indicates whether DMA transfer is in progress or completed
+*
+*  @return   DMA transfer status
+*          dmacHw_TRANSFER_STATUS_BUSY:         DMA Transfer ongoing
+*          dmacHw_TRANSFER_STATUS_DONE:         DMA Transfer completed
+*          dmacHw_TRANSFER_STATUS_ERROR:        DMA Transfer error
+*
+*/
+/****************************************************************************/
+dmacHw_TRANSFER_STATUS_e dmacHw_transferCompleted(dmacHw_HANDLE_t handle	/*   [ IN ] DMA Channel handle */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	if (CHANNEL_BUSY(pCblk->module, pCblk->channel)) {
+		return dmacHw_TRANSFER_STATUS_BUSY;
+	} else if (dmacHw_REG_INT_RAW_ERROR(pCblk->module) &
+		   (0x00000001 << pCblk->channel)) {
+		return dmacHw_TRANSFER_STATUS_ERROR;
+	}
+
+	return dmacHw_TRANSFER_STATUS_DONE;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Set descriptors for known data length
+*
+*  When DMA has to work as a flow controller, this function prepares the
+*  descriptor chain to transfer data
+*
+*  from:
+*          - Memory to memory
+*          - Peripheral to memory
+*          - Memory to Peripheral
+*          - Peripheral to Peripheral
+*
+*  @return   -1 - On failure
+*             0 - On success
+*
+*/
+/****************************************************************************/
+int dmacHw_setDataDescriptor(dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+			     void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+			     void *pSrcAddr,	/*   [ IN ] Source (Peripheral/Memory) address */
+			     void *pDstAddr,	/*   [ IN ] Destination (Peripheral/Memory) address */
+			     size_t dataLen	/*   [ IN ] Data length in bytes */
+    ) {
+	dmacHw_TRANSACTION_WIDTH_e dstTrWidth;
+	dmacHw_TRANSACTION_WIDTH_e srcTrWidth;
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+	dmacHw_DESC_t *pStart;
+	dmacHw_DESC_t *pProg;
+	int srcTs = 0;
+	int blkTs = 0;
+	int oddSize = 0;
+	int descCount = 0;
+	int count = 0;
+	int dstTrSize = 0;
+	int srcTrSize = 0;
+	uint32_t maxBlockSize = dmacHw_MAX_BLOCKSIZE;
+
+	dstTrSize = dmacHw_GetTrWidthInBytes(pConfig->dstMaxTransactionWidth);
+	srcTrSize = dmacHw_GetTrWidthInBytes(pConfig->srcMaxTransactionWidth);
+
+	/* Skip Tx if buffer is NULL  or length is unknown */
+	if ((pSrcAddr == NULL) || (pDstAddr == NULL) || (dataLen == 0)) {
+		/* Do not initiate transfer */
+		return -1;
+	}
+
+	/* Ensure scatter and gather are transaction aligned */
+	if ((pConfig->srcGatherWidth % srcTrSize)
+	    || (pConfig->dstScatterWidth % dstTrSize)) {
+		return -2;
+	}
+
+	/*
+	   Background 1: DMAC can not perform DMA if source and destination addresses are
+	   not properly aligned with the channel's transaction width. So, for successful
+	   DMA transfer, transaction width must be set according to the alignment of the
+	   source and destination address.
+	 */
+
+	/* Adjust destination transaction width if destination address is not aligned properly */
+	dstTrWidth = pConfig->dstMaxTransactionWidth;
+	while (dmacHw_ADDRESS_MASK(dstTrSize) & (uint32_t) pDstAddr) {
+		dstTrWidth = dmacHw_GetNextTrWidth(dstTrWidth);
+		dstTrSize = dmacHw_GetTrWidthInBytes(dstTrWidth);
+	}
+
+	/* Adjust source transaction width if source address is not aligned properly */
+	srcTrWidth = pConfig->srcMaxTransactionWidth;
+	while (dmacHw_ADDRESS_MASK(srcTrSize) & (uint32_t) pSrcAddr) {
+		srcTrWidth = dmacHw_GetNextTrWidth(srcTrWidth);
+		srcTrSize = dmacHw_GetTrWidthInBytes(srcTrWidth);
+	}
+
+	/* Find the maximum transaction per descriptor */
+	if (pConfig->maxDataPerBlock
+	    && ((pConfig->maxDataPerBlock / srcTrSize) <
+		dmacHw_MAX_BLOCKSIZE)) {
+		maxBlockSize = pConfig->maxDataPerBlock / srcTrSize;
+	}
+
+	/* Find number of source transactions needed to complete the DMA transfer */
+	srcTs = dataLen / srcTrSize;
+	/* Find the odd number of bytes that need to be transferred as single byte transaction width */
+	if (srcTs && (dstTrSize > srcTrSize)) {
+		oddSize = dataLen % dstTrSize;
+		/* Adjust source transaction count due to "oddSize" */
+		srcTs = srcTs - (oddSize / srcTrSize);
+	} else {
+		oddSize = dataLen % srcTrSize;
+	}
+	/* Adjust "descCount" due to "oddSize" */
+	if (oddSize) {
+		descCount++;
+	}
+	/* Find the number of descriptor needed for total "srcTs" */
+	if (srcTs) {
+		descCount += ((srcTs - 1) / maxBlockSize) + 1;
+	}
+
+	/* Check the availability of "descCount" discriptors in the ring */
+	pProg = pRing->pHead;
+	for (count = 0; (descCount <= pRing->num) && (count < descCount);
+	     count++) {
+		if ((pProg->ctl.hi & dmacHw_DESC_FREE) == 0) {
+			/* Sufficient descriptors are not available */
+			return -3;
+		}
+		pProg = (dmacHw_DESC_t *) pProg->llp;
+	}
+
+	/* Remember the link list item to program the channel registers */
+	pStart = pProg = pRing->pHead;
+	/* Make a link list with "descCount(=count)" number of descriptors */
+	while (count) {
+		/* Reset channel control information */
+		pProg->ctl.lo = 0;
+		/* Enable source gather if configured */
+		if (pConfig->srcGatherWidth) {
+			pProg->ctl.lo |= dmacHw_REG_CTL_SG_ENABLE;
+		}
+		/* Enable destination scatter if configured */
+		if (pConfig->dstScatterWidth) {
+			pProg->ctl.lo |= dmacHw_REG_CTL_DS_ENABLE;
+		}
+		/* Set source and destination address */
+		pProg->sar = (uint32_t) pSrcAddr;
+		pProg->dar = (uint32_t) pDstAddr;
+		/* Use "devCtl" to mark that user memory need to be freed later if needed */
+		if (pProg == pRing->pHead) {
+			pProg->devCtl = dmacHw_FREE_USER_MEMORY;
+		} else {
+			pProg->devCtl = 0;
+		}
+
+		blkTs = srcTs;
+
+		/* Special treatmeant for last descriptor */
+		if (count == 1) {
+			/* Mark the last descriptor */
+			pProg->ctl.lo &=
+			    ~(dmacHw_REG_CTL_LLP_DST_EN |
+			      dmacHw_REG_CTL_LLP_SRC_EN);
+			/* Treatment for odd data bytes */
+			if (oddSize) {
+				/* Adjust for single byte transaction width */
+				switch (pConfig->transferType) {
+				case dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_MEM:
+					dstTrWidth =
+					    dmacHw_DST_TRANSACTION_WIDTH_8;
+					blkTs =
+					    (oddSize / srcTrSize) +
+					    ((oddSize % srcTrSize) ? 1 : 0);
+					break;
+				case dmacHw_TRANSFER_TYPE_MEM_TO_PERIPHERAL:
+					srcTrWidth =
+					    dmacHw_SRC_TRANSACTION_WIDTH_8;
+					blkTs = oddSize;
+					break;
+				case dmacHw_TRANSFER_TYPE_MEM_TO_MEM:
+					srcTrWidth =
+					    dmacHw_SRC_TRANSACTION_WIDTH_8;
+					dstTrWidth =
+					    dmacHw_DST_TRANSACTION_WIDTH_8;
+					blkTs = oddSize;
+					break;
+				case dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_PERIPHERAL:
+					/* Do not adjust the transaction width  */
+					break;
+				}
+			} else {
+				srcTs -= blkTs;
+			}
+		} else {
+			if (srcTs / maxBlockSize) {
+				blkTs = maxBlockSize;
+			}
+			/* Remaining source transactions for next iteration */
+			srcTs -= blkTs;
+		}
+		/* Must have a valid source transactions */
+		dmacHw_ASSERT(blkTs > 0);
+		/* Set control information */
+		if (pConfig->flowControler == dmacHw_FLOW_CONTROL_DMA) {
+			pProg->ctl.lo |= pConfig->transferType |
+			    pConfig->srcUpdate |
+			    pConfig->dstUpdate |
+			    srcTrWidth |
+			    dstTrWidth |
+			    pConfig->srcMaxBurstWidth |
+			    pConfig->dstMaxBurstWidth |
+			    pConfig->srcMasterInterface |
+			    pConfig->dstMasterInterface | dmacHw_REG_CTL_INT_EN;
+		} else {
+			uint32_t transferType = 0;
+			switch (pConfig->transferType) {
+			case dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_MEM:
+				transferType = dmacHw_REG_CTL_TTFC_PM_PERI;
+				break;
+			case dmacHw_TRANSFER_TYPE_MEM_TO_PERIPHERAL:
+				transferType = dmacHw_REG_CTL_TTFC_MP_PERI;
+				break;
+			default:
+				dmacHw_ASSERT(0);
+			}
+			pProg->ctl.lo |= transferType |
+			    pConfig->srcUpdate |
+			    pConfig->dstUpdate |
+			    srcTrWidth |
+			    dstTrWidth |
+			    pConfig->srcMaxBurstWidth |
+			    pConfig->dstMaxBurstWidth |
+			    pConfig->srcMasterInterface |
+			    pConfig->dstMasterInterface | dmacHw_REG_CTL_INT_EN;
+		}
+
+		/* Set block transaction size */
+		pProg->ctl.hi = blkTs & dmacHw_REG_CTL_BLOCK_TS_MASK;
+		/* Look for next descriptor */
+		if (count > 1) {
+			/* Point to the next descriptor */
+			pProg = (dmacHw_DESC_t *) pProg->llp;
+
+			/* Update source and destination address for next iteration */
+			switch (pConfig->transferType) {
+			case dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_MEM:
+				if (pConfig->dstScatterWidth) {
+					pDstAddr =
+					    (char *)pDstAddr +
+					    blkTs * srcTrSize +
+					    (((blkTs * srcTrSize) /
+					      pConfig->dstScatterWidth) *
+					     pConfig->dstScatterJump);
+				} else {
+					pDstAddr =
+					    (char *)pDstAddr +
+					    blkTs * srcTrSize;
+				}
+				break;
+			case dmacHw_TRANSFER_TYPE_MEM_TO_PERIPHERAL:
+				if (pConfig->srcGatherWidth) {
+					pSrcAddr =
+					    (char *)pDstAddr +
+					    blkTs * srcTrSize +
+					    (((blkTs * srcTrSize) /
+					      pConfig->srcGatherWidth) *
+					     pConfig->srcGatherJump);
+				} else {
+					pSrcAddr =
+					    (char *)pSrcAddr +
+					    blkTs * srcTrSize;
+				}
+				break;
+			case dmacHw_TRANSFER_TYPE_MEM_TO_MEM:
+				if (pConfig->dstScatterWidth) {
+					pDstAddr =
+					    (char *)pDstAddr +
+					    blkTs * srcTrSize +
+					    (((blkTs * srcTrSize) /
+					      pConfig->dstScatterWidth) *
+					     pConfig->dstScatterJump);
+				} else {
+					pDstAddr =
+					    (char *)pDstAddr +
+					    blkTs * srcTrSize;
+				}
+
+				if (pConfig->srcGatherWidth) {
+					pSrcAddr =
+					    (char *)pDstAddr +
+					    blkTs * srcTrSize +
+					    (((blkTs * srcTrSize) /
+					      pConfig->srcGatherWidth) *
+					     pConfig->srcGatherJump);
+				} else {
+					pSrcAddr =
+					    (char *)pSrcAddr +
+					    blkTs * srcTrSize;
+				}
+				break;
+			case dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_PERIPHERAL:
+				/* Do not adjust the address */
+				break;
+			default:
+				dmacHw_ASSERT(0);
+			}
+		} else {
+			/* At the end of transfer "srcTs" must be zero */
+			dmacHw_ASSERT(srcTs == 0);
+		}
+		count--;
+	}
+
+	/* Remember the descriptor to initialize the registers */
+	if (pRing->pProg == dmacHw_DESC_INIT) {
+		pRing->pProg = pStart;
+	}
+	/* Indicate that the descriptor is updated */
+	pRing->pEnd = pProg;
+	/* Head pointing to the next descriptor */
+	pRing->pHead = (dmacHw_DESC_t *) pProg->llp;
+	/* Update Tail pointer if destination is a peripheral,
+	   because no one is going to read from the pTail
+	 */
+	if (!dmacHw_DST_IS_MEMORY(pConfig->transferType)) {
+		pRing->pTail = pRing->pHead;
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Provides DMA controller attributes
+*
+*
+*  @return  DMA controller attributes
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+uint32_t dmacHw_getDmaControllerAttribute(dmacHw_HANDLE_t handle,	/*  [ IN ]  DMA Channel handle */
+					  dmacHw_CONTROLLER_ATTRIB_e attr	/*  [ IN ]  DMA Controler attribute of type  dmacHw_CONTROLLER_ATTRIB_e */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	switch (attr) {
+	case dmacHw_CONTROLLER_ATTRIB_CHANNEL_NUM:
+		return dmacHw_GET_NUM_CHANNEL(pCblk->module);
+	case dmacHw_CONTROLLER_ATTRIB_CHANNEL_MAX_BLOCK_SIZE:
+		return (1 <<
+			 (dmacHw_GET_MAX_BLOCK_SIZE
+			  (pCblk->module, pCblk->module) + 2)) - 8;
+	case dmacHw_CONTROLLER_ATTRIB_MASTER_INTF_NUM:
+		return dmacHw_GET_NUM_INTERFACE(pCblk->module);
+	case dmacHw_CONTROLLER_ATTRIB_CHANNEL_BUS_WIDTH:
+		return 32 << dmacHw_GET_CHANNEL_DATA_WIDTH(pCblk->module,
+							   pCblk->channel);
+	case dmacHw_CONTROLLER_ATTRIB_CHANNEL_FIFO_SIZE:
+		return GetFifoSize(handle);
+	}
+	dmacHw_ASSERT(0);
+	return 0;
+}
diff --git a/arch/arm/mach-bcmring/csp/dmac/dmacHw_extra.c b/arch/arm/mach-bcmring/csp/dmac/dmacHw_extra.c
new file mode 100644
index 00000000000..ff7b436d093
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/dmac/dmacHw_extra.c
@@ -0,0 +1,1017 @@
+/*****************************************************************************
+* Copyright 2003 - 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/****************************************************************************/
+/**
+*  @file    dmacHw_extra.c
+*
+*  @brief   Extra Low level DMA controller driver routines
+*
+*  @note
+*
+*   These routines provide basic DMA functionality only.
+*/
+/****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <csp/stdint.h>
+#include <stddef.h>
+
+#include <csp/dmacHw.h>
+#include <mach/csp/dmacHw_reg.h>
+#include <mach/csp/dmacHw_priv.h>
+
+extern dmacHw_CBLK_t dmacHw_gCblk[dmacHw_MAX_CHANNEL_COUNT];	/* Declared in dmacHw.c */
+
+/* ---- External Function Prototypes ------------------------------------- */
+
+/* ---- Internal Use Function Prototypes --------------------------------- */
+/****************************************************************************/
+/**
+*  @brief   Overwrites data length in the descriptor
+*
+*  This function overwrites data length in the descriptor
+*
+*
+*  @return   void
+*
+*  @note
+*          This is only used for PCM channel
+*/
+/****************************************************************************/
+void dmacHw_setDataLength(dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+			  void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+			  size_t dataLen	/*   [ IN ] Data length in bytes */
+    );
+
+/****************************************************************************/
+/**
+*  @brief   Helper function to display DMA registers
+*
+*  @return  void
+*
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+static void DisplayRegisterContents(int module,	/*   [ IN ] DMA Controller unit  (0-1) */
+				    int channel,	/*   [ IN ] DMA Channel          (0-7) / -1(all) */
+				    int (*fpPrint) (const char *, ...)	/*   [ IN ] Callback to the print function */
+    ) {
+	int chan;
+
+	(*fpPrint) ("Displaying register content \n\n");
+	(*fpPrint) ("Module %d: Interrupt raw transfer              0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_RAW_TRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt raw block                 0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_RAW_BLOCK(module)));
+	(*fpPrint) ("Module %d: Interrupt raw src transfer          0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_RAW_STRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt raw dst transfer          0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_RAW_DTRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt raw error                 0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_RAW_ERROR(module)));
+	(*fpPrint) ("--------------------------------------------------\n");
+	(*fpPrint) ("Module %d: Interrupt stat transfer             0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_STAT_TRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt stat block                0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_STAT_BLOCK(module)));
+	(*fpPrint) ("Module %d: Interrupt stat src transfer         0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_STAT_STRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt stat dst transfer         0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_STAT_DTRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt stat error                0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_STAT_ERROR(module)));
+	(*fpPrint) ("--------------------------------------------------\n");
+	(*fpPrint) ("Module %d: Interrupt mask transfer             0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_MASK_TRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt mask block                0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_MASK_BLOCK(module)));
+	(*fpPrint) ("Module %d: Interrupt mask src transfer         0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_MASK_STRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt mask dst transfer         0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_MASK_DTRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt mask error                0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_MASK_ERROR(module)));
+	(*fpPrint) ("--------------------------------------------------\n");
+	(*fpPrint) ("Module %d: Interrupt clear transfer            0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_CLEAR_TRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt clear block               0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_CLEAR_BLOCK(module)));
+	(*fpPrint) ("Module %d: Interrupt clear src transfer        0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_CLEAR_STRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt clear dst transfer        0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_CLEAR_DTRAN(module)));
+	(*fpPrint) ("Module %d: Interrupt clear error               0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_INT_CLEAR_ERROR(module)));
+	(*fpPrint) ("--------------------------------------------------\n");
+	(*fpPrint) ("Module %d: SW source req                       0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_SW_HS_SRC_REQ(module)));
+	(*fpPrint) ("Module %d: SW dest req                         0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_SW_HS_DST_REQ(module)));
+	(*fpPrint) ("Module %d: SW source signal                    0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_SW_HS_SRC_SGL_REQ(module)));
+	(*fpPrint) ("Module %d: SW dest signal                      0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_SW_HS_DST_SGL_REQ(module)));
+	(*fpPrint) ("Module %d: SW source last                      0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_SW_HS_SRC_LST_REQ(module)));
+	(*fpPrint) ("Module %d: SW dest last                        0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_SW_HS_DST_LST_REQ(module)));
+	(*fpPrint) ("--------------------------------------------------\n");
+	(*fpPrint) ("Module %d: misc config                         0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_MISC_CFG(module)));
+	(*fpPrint) ("Module %d: misc channel enable                 0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_MISC_CH_ENABLE(module)));
+	(*fpPrint) ("Module %d: misc ID                             0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_MISC_ID(module)));
+	(*fpPrint) ("Module %d: misc test                           0x%X\n",
+		    module, (uint32_t) (dmacHw_REG_MISC_TEST(module)));
+
+	if (channel == -1) {
+		for (chan = 0; chan < 8; chan++) {
+			(*fpPrint)
+			    ("--------------------------------------------------\n");
+			(*fpPrint)
+			    ("Module %d: Channel %d Source                   0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_SAR(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Destination              0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_DAR(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d LLP                      0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_LLP(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Control (LO)             0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_CTL_LO(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Control (HI)             0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_CTL_HI(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Source Stats             0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_SSTAT(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Dest Stats               0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_DSTAT(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Source Stats Addr        0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_SSTATAR(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Dest Stats Addr          0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_DSTATAR(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Config (LO)              0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_CFG_LO(module, chan)));
+			(*fpPrint)
+			    ("Module %d: Channel %d Config (HI)              0x%X\n",
+			     module, chan,
+			     (uint32_t) (dmacHw_REG_CFG_HI(module, chan)));
+		}
+	} else {
+		chan = channel;
+		(*fpPrint)
+		    ("--------------------------------------------------\n");
+		(*fpPrint)
+		    ("Module %d: Channel %d Source                   0x%X\n",
+		     module, chan, (uint32_t) (dmacHw_REG_SAR(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Destination              0x%X\n",
+		     module, chan, (uint32_t) (dmacHw_REG_DAR(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d LLP                      0x%X\n",
+		     module, chan, (uint32_t) (dmacHw_REG_LLP(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Control (LO)             0x%X\n",
+		     module, chan,
+		     (uint32_t) (dmacHw_REG_CTL_LO(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Control (HI)             0x%X\n",
+		     module, chan,
+		     (uint32_t) (dmacHw_REG_CTL_HI(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Source Stats             0x%X\n",
+		     module, chan, (uint32_t) (dmacHw_REG_SSTAT(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Dest Stats               0x%X\n",
+		     module, chan, (uint32_t) (dmacHw_REG_DSTAT(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Source Stats Addr        0x%X\n",
+		     module, chan,
+		     (uint32_t) (dmacHw_REG_SSTATAR(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Dest Stats Addr          0x%X\n",
+		     module, chan,
+		     (uint32_t) (dmacHw_REG_DSTATAR(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Config (LO)              0x%X\n",
+		     module, chan,
+		     (uint32_t) (dmacHw_REG_CFG_LO(module, chan)));
+		(*fpPrint)
+		    ("Module %d: Channel %d Config (HI)              0x%X\n",
+		     module, chan,
+		     (uint32_t) (dmacHw_REG_CFG_HI(module, chan)));
+	}
+}
+
+/****************************************************************************/
+/**
+*  @brief   Helper function to display descriptor ring
+*
+*  @return  void
+*
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+static void DisplayDescRing(void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+			    int (*fpPrint) (const char *, ...)	/*   [ IN ] Callback to the print function */
+    ) {
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+	dmacHw_DESC_t *pStart;
+
+	if (pRing->pHead == NULL) {
+		return;
+	}
+
+	pStart = pRing->pHead;
+
+	while ((dmacHw_DESC_t *) pStart->llp != pRing->pHead) {
+		if (pStart == pRing->pHead) {
+			(*fpPrint) ("Head\n");
+		}
+		if (pStart == pRing->pTail) {
+			(*fpPrint) ("Tail\n");
+		}
+		if (pStart == pRing->pProg) {
+			(*fpPrint) ("Prog\n");
+		}
+		if (pStart == pRing->pEnd) {
+			(*fpPrint) ("End\n");
+		}
+		if (pStart == pRing->pFree) {
+			(*fpPrint) ("Free\n");
+		}
+		(*fpPrint) ("0x%X:\n", (uint32_t) pStart);
+		(*fpPrint) ("sar    0x%0X\n", pStart->sar);
+		(*fpPrint) ("dar    0x%0X\n", pStart->dar);
+		(*fpPrint) ("llp    0x%0X\n", pStart->llp);
+		(*fpPrint) ("ctl.lo 0x%0X\n", pStart->ctl.lo);
+		(*fpPrint) ("ctl.hi 0x%0X\n", pStart->ctl.hi);
+		(*fpPrint) ("sstat  0x%0X\n", pStart->sstat);
+		(*fpPrint) ("dstat  0x%0X\n", pStart->dstat);
+		(*fpPrint) ("devCtl 0x%0X\n", pStart->devCtl);
+
+		pStart = (dmacHw_DESC_t *) pStart->llp;
+	}
+	if (pStart == pRing->pHead) {
+		(*fpPrint) ("Head\n");
+	}
+	if (pStart == pRing->pTail) {
+		(*fpPrint) ("Tail\n");
+	}
+	if (pStart == pRing->pProg) {
+		(*fpPrint) ("Prog\n");
+	}
+	if (pStart == pRing->pEnd) {
+		(*fpPrint) ("End\n");
+	}
+	if (pStart == pRing->pFree) {
+		(*fpPrint) ("Free\n");
+	}
+	(*fpPrint) ("0x%X:\n", (uint32_t) pStart);
+	(*fpPrint) ("sar    0x%0X\n", pStart->sar);
+	(*fpPrint) ("dar    0x%0X\n", pStart->dar);
+	(*fpPrint) ("llp    0x%0X\n", pStart->llp);
+	(*fpPrint) ("ctl.lo 0x%0X\n", pStart->ctl.lo);
+	(*fpPrint) ("ctl.hi 0x%0X\n", pStart->ctl.hi);
+	(*fpPrint) ("sstat  0x%0X\n", pStart->sstat);
+	(*fpPrint) ("dstat  0x%0X\n", pStart->dstat);
+	(*fpPrint) ("devCtl 0x%0X\n", pStart->devCtl);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Check if DMA channel is the flow controller
+*
+*  @return  1 : If DMA is a flow controler
+*           0 : Peripheral is the flow controller
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+static inline int DmaIsFlowController(void *pDescriptor	/*   [ IN ] Descriptor buffer */
+    ) {
+	uint32_t ttfc =
+	    (dmacHw_GET_DESC_RING(pDescriptor))->pTail->ctl.
+	    lo & dmacHw_REG_CTL_TTFC_MASK;
+
+	switch (ttfc) {
+	case dmacHw_REG_CTL_TTFC_MM_DMAC:
+	case dmacHw_REG_CTL_TTFC_MP_DMAC:
+	case dmacHw_REG_CTL_TTFC_PM_DMAC:
+	case dmacHw_REG_CTL_TTFC_PP_DMAC:
+		return 1;
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Overwrites data length in the descriptor
+*
+*  This function overwrites data length in the descriptor
+*
+*
+*  @return   void
+*
+*  @note
+*          This is only used for PCM channel
+*/
+/****************************************************************************/
+void dmacHw_setDataLength(dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+			  void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+			  size_t dataLen	/*   [ IN ] Data length in bytes */
+    ) {
+	dmacHw_DESC_t *pProg;
+	dmacHw_DESC_t *pHead;
+	int srcTs = 0;
+	int srcTrSize = 0;
+
+	pHead = (dmacHw_GET_DESC_RING(pDescriptor))->pHead;
+	pProg = pHead;
+
+	srcTrSize = dmacHw_GetTrWidthInBytes(pConfig->srcMaxTransactionWidth);
+	srcTs = dataLen / srcTrSize;
+	do {
+		pProg->ctl.hi = srcTs & dmacHw_REG_CTL_BLOCK_TS_MASK;
+		pProg = (dmacHw_DESC_t *) pProg->llp;
+	} while (pProg != pHead);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Clears the interrupt
+*
+*  This function clears the DMA channel specific interrupt
+*
+*
+*  @return   void
+*
+*  @note
+*     Must be called under the context of ISR
+*/
+/****************************************************************************/
+void dmacHw_clearInterrupt(dmacHw_HANDLE_t handle	/* [ IN ] DMA Channel handle */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	dmacHw_TRAN_INT_CLEAR(pCblk->module, pCblk->channel);
+	dmacHw_BLOCK_INT_CLEAR(pCblk->module, pCblk->channel);
+	dmacHw_ERROR_INT_CLEAR(pCblk->module, pCblk->channel);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Returns the cause of channel specific DMA interrupt
+*
+*  This function returns the cause of interrupt
+*
+*  @return  Interrupt status, each bit representing a specific type of interrupt
+*
+*  @note
+*     Should be called under the context of ISR
+*/
+/****************************************************************************/
+dmacHw_INTERRUPT_STATUS_e dmacHw_getInterruptStatus(dmacHw_HANDLE_t handle	/* [ IN ] DMA Channel handle */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	dmacHw_INTERRUPT_STATUS_e status = dmacHw_INTERRUPT_STATUS_NONE;
+
+	if (dmacHw_REG_INT_STAT_TRAN(pCblk->module) &
+	    ((0x00000001 << pCblk->channel))) {
+		status |= dmacHw_INTERRUPT_STATUS_TRANS;
+	}
+	if (dmacHw_REG_INT_STAT_BLOCK(pCblk->module) &
+	    ((0x00000001 << pCblk->channel))) {
+		status |= dmacHw_INTERRUPT_STATUS_BLOCK;
+	}
+	if (dmacHw_REG_INT_STAT_ERROR(pCblk->module) &
+	    ((0x00000001 << pCblk->channel))) {
+		status |= dmacHw_INTERRUPT_STATUS_ERROR;
+	}
+
+	return status;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Indentifies a DMA channel causing interrupt
+*
+*  This functions returns a channel causing interrupt of type dmacHw_INTERRUPT_STATUS_e
+*
+*  @return  NULL   : No channel causing DMA interrupt
+*           ! NULL : Handle to a channel causing DMA interrupt
+*  @note
+*     dmacHw_clearInterrupt() must be called with a valid handle after calling this function
+*/
+/****************************************************************************/
+dmacHw_HANDLE_t dmacHw_getInterruptSource(void)
+{
+	uint32_t i;
+
+	for (i = 0; i < dmaChannelCount_0 + dmaChannelCount_1; i++) {
+		if ((dmacHw_REG_INT_STAT_TRAN(dmacHw_gCblk[i].module) &
+		     ((0x00000001 << dmacHw_gCblk[i].channel)))
+		    || (dmacHw_REG_INT_STAT_BLOCK(dmacHw_gCblk[i].module) &
+			((0x00000001 << dmacHw_gCblk[i].channel)))
+		    || (dmacHw_REG_INT_STAT_ERROR(dmacHw_gCblk[i].module) &
+			((0x00000001 << dmacHw_gCblk[i].channel)))
+		    ) {
+			return dmacHw_CBLK_TO_HANDLE(&dmacHw_gCblk[i]);
+		}
+	}
+	return dmacHw_CBLK_TO_HANDLE(NULL);
+}
+
+/****************************************************************************/
+/**
+*  @brief  Estimates number of descriptor needed to perform certain DMA transfer
+*
+*
+*  @return  On failure : -1
+*           On success : Number of descriptor count
+*
+*
+*/
+/****************************************************************************/
+int dmacHw_calculateDescriptorCount(dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+				    void *pSrcAddr,	/*   [ IN ] Source (Peripheral/Memory) address */
+				    void *pDstAddr,	/*   [ IN ] Destination (Peripheral/Memory) address */
+				    size_t dataLen	/*   [ IN ] Data length in bytes */
+    ) {
+	int srcTs = 0;
+	int oddSize = 0;
+	int descCount = 0;
+	int dstTrSize = 0;
+	int srcTrSize = 0;
+	uint32_t maxBlockSize = dmacHw_MAX_BLOCKSIZE;
+	dmacHw_TRANSACTION_WIDTH_e dstTrWidth;
+	dmacHw_TRANSACTION_WIDTH_e srcTrWidth;
+
+	dstTrSize = dmacHw_GetTrWidthInBytes(pConfig->dstMaxTransactionWidth);
+	srcTrSize = dmacHw_GetTrWidthInBytes(pConfig->srcMaxTransactionWidth);
+
+	/* Skip Tx if buffer is NULL  or length is unknown */
+	if ((pSrcAddr == NULL) || (pDstAddr == NULL) || (dataLen == 0)) {
+		/* Do not initiate transfer */
+		return -1;
+	}
+
+	/* Ensure scatter and gather are transaction aligned */
+	if (pConfig->srcGatherWidth % srcTrSize
+	    || pConfig->dstScatterWidth % dstTrSize) {
+		return -1;
+	}
+
+	/*
+	   Background 1: DMAC can not perform DMA if source and destination addresses are
+	   not properly aligned with the channel's transaction width. So, for successful
+	   DMA transfer, transaction width must be set according to the alignment of the
+	   source and destination address.
+	 */
+
+	/* Adjust destination transaction width if destination address is not aligned properly */
+	dstTrWidth = pConfig->dstMaxTransactionWidth;
+	while (dmacHw_ADDRESS_MASK(dstTrSize) & (uint32_t) pDstAddr) {
+		dstTrWidth = dmacHw_GetNextTrWidth(dstTrWidth);
+		dstTrSize = dmacHw_GetTrWidthInBytes(dstTrWidth);
+	}
+
+	/* Adjust source transaction width if source address is not aligned properly */
+	srcTrWidth = pConfig->srcMaxTransactionWidth;
+	while (dmacHw_ADDRESS_MASK(srcTrSize) & (uint32_t) pSrcAddr) {
+		srcTrWidth = dmacHw_GetNextTrWidth(srcTrWidth);
+		srcTrSize = dmacHw_GetTrWidthInBytes(srcTrWidth);
+	}
+
+	/* Find the maximum transaction per descriptor */
+	if (pConfig->maxDataPerBlock
+	    && ((pConfig->maxDataPerBlock / srcTrSize) <
+		dmacHw_MAX_BLOCKSIZE)) {
+		maxBlockSize = pConfig->maxDataPerBlock / srcTrSize;
+	}
+
+	/* Find number of source transactions needed to complete the DMA transfer */
+	srcTs = dataLen / srcTrSize;
+	/* Find the odd number of bytes that need to be transferred as single byte transaction width */
+	if (srcTs && (dstTrSize > srcTrSize)) {
+		oddSize = dataLen % dstTrSize;
+		/* Adjust source transaction count due to "oddSize" */
+		srcTs = srcTs - (oddSize / srcTrSize);
+	} else {
+		oddSize = dataLen % srcTrSize;
+	}
+	/* Adjust "descCount" due to "oddSize" */
+	if (oddSize) {
+		descCount++;
+	}
+
+	/* Find the number of descriptor needed for total "srcTs" */
+	if (srcTs) {
+		descCount += ((srcTs - 1) / maxBlockSize) + 1;
+	}
+
+	return descCount;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Check the existance of pending descriptor
+*
+*  This function confirmes if there is any pending descriptor in the chain
+*  to program the channel
+*
+*  @return  1 : Channel need to be programmed with pending descriptor
+*           0 : No more pending descriptor to programe the channel
+*
+*  @note
+*     - This function should be called from ISR in case there are pending
+*       descriptor to program the channel.
+*
+*     Example:
+*
+*     dmac_isr ()
+*     {
+*         ...
+*         if (dmacHw_descriptorPending (handle))
+*         {
+*            dmacHw_initiateTransfer (handle);
+*         }
+*     }
+*
+*/
+/****************************************************************************/
+uint32_t dmacHw_descriptorPending(dmacHw_HANDLE_t handle,	/*   [ IN ] DMA Channel handle */
+				  void *pDescriptor	/*   [ IN ] Descriptor buffer */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+
+	/* Make sure channel is not busy */
+	if (!CHANNEL_BUSY(pCblk->module, pCblk->channel)) {
+		/* Check if pEnd is not processed */
+		if (pRing->pEnd) {
+			/* Something left for processing */
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Program channel register to stop transfer
+*
+*  Ensures the channel is not doing any transfer after calling this function
+*
+*  @return  void
+*
+*/
+/****************************************************************************/
+void dmacHw_stopTransfer(dmacHw_HANDLE_t handle	/*   [ IN ] DMA Channel handle */
+    ) {
+	dmacHw_CBLK_t *pCblk;
+
+	pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	/* Stop the channel */
+	dmacHw_DMA_STOP(pCblk->module, pCblk->channel);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Deallocates source or destination memory, allocated
+*
+*  This function can be called to deallocate data memory that was DMAed successfully
+*
+*  @return  On failure : -1
+*           On success : Number of buffer freed
+*
+*  @note
+*     This function will be called ONLY, when source OR destination address is pointing
+*     to dynamic memory
+*/
+/****************************************************************************/
+int dmacHw_freeMem(dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+		   void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+		   void (*fpFree) (void *)	/*   [ IN ] Function pointer to free data memory */
+    ) {
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+	uint32_t count = 0;
+
+	if (fpFree == NULL) {
+		return -1;
+	}
+
+	while ((pRing->pFree != pRing->pTail)
+	       && (pRing->pFree->ctl.lo & dmacHw_DESC_FREE)) {
+		if (pRing->pFree->devCtl == dmacHw_FREE_USER_MEMORY) {
+			/* Identify, which memory to free */
+			if (dmacHw_DST_IS_MEMORY(pConfig->transferType)) {
+				(*fpFree) ((void *)pRing->pFree->dar);
+			} else {
+				/* Destination was a peripheral */
+				(*fpFree) ((void *)pRing->pFree->sar);
+			}
+			/* Unmark user memory to indicate it is freed */
+			pRing->pFree->devCtl = ~dmacHw_FREE_USER_MEMORY;
+		}
+		dmacHw_NEXT_DESC(pRing, pFree);
+
+		count++;
+	}
+
+	return count;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Prepares descriptor ring, when source peripheral working as a flow controller
+*
+*  This function will update the discriptor ring by allocating buffers, when source peripheral
+*  has to work as a flow controller to transfer data from:
+*           - Peripheral to memory.
+*
+*  @return  On failure : -1
+*           On success : Number of descriptor updated
+*
+*
+*  @note
+*     Channel must be configured for peripheral to memory transfer
+*
+*/
+/****************************************************************************/
+int dmacHw_setVariableDataDescriptor(dmacHw_HANDLE_t handle,	/*   [ IN ] DMA Channel handle */
+				     dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+				     void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+				     uint32_t srcAddr,	/*   [ IN ] Source peripheral address */
+				     void *(*fpAlloc) (int len),	/*   [ IN ] Function pointer  that provides destination memory */
+				     int len,	/*   [ IN ] Number of bytes "fpAlloc" will allocate for destination */
+				     int num	/*   [ IN ] Number of descriptor to set */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+	dmacHw_DESC_t *pProg = NULL;
+	dmacHw_DESC_t *pLast = NULL;
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+	uint32_t dstAddr;
+	uint32_t controlParam;
+	int i;
+
+	dmacHw_ASSERT(pConfig->transferType ==
+		      dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_MEM);
+
+	if (num > pRing->num) {
+		return -1;
+	}
+
+	pLast = pRing->pEnd;	/* Last descriptor updated */
+	pProg = pRing->pHead;	/* First descriptor in the new list */
+
+	controlParam = pConfig->srcUpdate |
+	    pConfig->dstUpdate |
+	    pConfig->srcMaxTransactionWidth |
+	    pConfig->dstMaxTransactionWidth |
+	    pConfig->srcMasterInterface |
+	    pConfig->dstMasterInterface |
+	    pConfig->srcMaxBurstWidth |
+	    pConfig->dstMaxBurstWidth |
+	    dmacHw_REG_CTL_TTFC_PM_PERI |
+	    dmacHw_REG_CTL_LLP_DST_EN |
+	    dmacHw_REG_CTL_LLP_SRC_EN | dmacHw_REG_CTL_INT_EN;
+
+	for (i = 0; i < num; i++) {
+		/* Allocate Rx buffer only for idle descriptor */
+		if (((pRing->pHead->ctl.hi & dmacHw_DESC_FREE) == 0) ||
+		    ((dmacHw_DESC_t *) pRing->pHead->llp == pRing->pTail)
+		    ) {
+			/* Rx descriptor is not idle */
+			break;
+		}
+		/* Set source address */
+		pRing->pHead->sar = srcAddr;
+		if (fpAlloc) {
+			/* Allocate memory for buffer in descriptor */
+			dstAddr = (uint32_t) (*fpAlloc) (len);
+			/* Check the destination address */
+			if (dstAddr == 0) {
+				if (i == 0) {
+					/* Not a single descriptor is available */
+					return -1;
+				}
+				break;
+			}
+			/* Set destination address */
+			pRing->pHead->dar = dstAddr;
+		}
+		/* Set control information */
+		pRing->pHead->ctl.lo = controlParam;
+		/* Use "devCtl" to mark the memory that need to be freed later */
+		pRing->pHead->devCtl = dmacHw_FREE_USER_MEMORY;
+		/* Descriptor is now owned by the channel */
+		pRing->pHead->ctl.hi = 0;
+		/* Remember the descriptor last updated */
+		pRing->pEnd = pRing->pHead;
+		/* Update next descriptor */
+		dmacHw_NEXT_DESC(pRing, pHead);
+	}
+
+	/* Mark the end of the list */
+	pRing->pEnd->ctl.lo &=
+	    ~(dmacHw_REG_CTL_LLP_DST_EN | dmacHw_REG_CTL_LLP_SRC_EN);
+	/* Connect the list */
+	if (pLast != pProg) {
+		pLast->ctl.lo |=
+		    dmacHw_REG_CTL_LLP_DST_EN | dmacHw_REG_CTL_LLP_SRC_EN;
+	}
+	/* Mark the descriptors are updated */
+	pCblk->descUpdated = 1;
+	if (!pCblk->varDataStarted) {
+		/* LLP must be pointing to the first descriptor */
+		dmacHw_SET_LLP(pCblk->module, pCblk->channel,
+			       (uint32_t) pProg - pRing->virt2PhyOffset);
+		/* Channel, handling variable data started */
+		pCblk->varDataStarted = 1;
+	}
+
+	return i;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Read data DMAed to memory
+*
+*  This function will read data that has been DMAed to memory while transfering from:
+*          - Memory to memory
+*          - Peripheral to memory
+*
+*  @param    handle     -
+*  @param    ppBbuf     -
+*  @param    pLen       -
+*
+*  @return  0 - No more data is available to read
+*           1 - More data might be available to read
+*
+*/
+/****************************************************************************/
+int dmacHw_readTransferredData(dmacHw_HANDLE_t handle,	/*  [ IN ] DMA Channel handle */
+			       dmacHw_CONFIG_t *pConfig,	/*   [ IN ]  Configuration settings */
+			       void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+			       void **ppBbuf,	/*   [ OUT ] Data received */
+			       size_t *pLlen	/*   [ OUT ] Length of the data received */
+    ) {
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+
+	(void)handle;
+
+	if (pConfig->transferMode != dmacHw_TRANSFER_MODE_CONTINUOUS) {
+		if (((pRing->pTail->ctl.hi & dmacHw_DESC_FREE) == 0) ||
+		    (pRing->pTail == pRing->pHead)
+		    ) {
+			/* No receive data available */
+			*ppBbuf = (char *)NULL;
+			*pLlen = 0;
+
+			return 0;
+		}
+	}
+
+	/* Return read buffer and length */
+	*ppBbuf = (char *)pRing->pTail->dar;
+
+	/* Extract length of the received data */
+	if (DmaIsFlowController(pDescriptor)) {
+		uint32_t srcTrSize = 0;
+
+		switch (pRing->pTail->ctl.lo & dmacHw_REG_CTL_SRC_TR_WIDTH_MASK) {
+		case dmacHw_REG_CTL_SRC_TR_WIDTH_8:
+			srcTrSize = 1;
+			break;
+		case dmacHw_REG_CTL_SRC_TR_WIDTH_16:
+			srcTrSize = 2;
+			break;
+		case dmacHw_REG_CTL_SRC_TR_WIDTH_32:
+			srcTrSize = 4;
+			break;
+		case dmacHw_REG_CTL_SRC_TR_WIDTH_64:
+			srcTrSize = 8;
+			break;
+		default:
+			dmacHw_ASSERT(0);
+		}
+		/* Calculate length from the block size */
+		*pLlen =
+		    (pRing->pTail->ctl.hi & dmacHw_REG_CTL_BLOCK_TS_MASK) *
+		    srcTrSize;
+	} else {
+		/* Extract length from the source peripheral */
+		*pLlen = pRing->pTail->sstat;
+	}
+
+	/* Advance tail to next descriptor */
+	dmacHw_NEXT_DESC(pRing, pTail);
+
+	return 1;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Set descriptor carrying control information
+*
+*  This function will be used to send specific control information to the device
+*  using the DMA channel
+*
+*
+*  @return  -1 - On failure
+*            0 - On success
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+int dmacHw_setControlDescriptor(dmacHw_CONFIG_t *pConfig,	/*   [ IN ] Configuration settings */
+				void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+				uint32_t ctlAddress,	/*   [ IN ] Address of the device control register */
+				uint32_t control	/*   [ IN ] Device control information */
+    ) {
+	dmacHw_DESC_RING_t *pRing = dmacHw_GET_DESC_RING(pDescriptor);
+
+	if (ctlAddress == 0) {
+		return -1;
+	}
+
+	/* Check the availability of descriptors in the ring */
+	if ((pRing->pHead->ctl.hi & dmacHw_DESC_FREE) == 0) {
+		return -1;
+	}
+	/* Set control information */
+	pRing->pHead->devCtl = control;
+	/* Set source and destination address */
+	pRing->pHead->sar = (uint32_t) &pRing->pHead->devCtl;
+	pRing->pHead->dar = ctlAddress;
+	/* Set control parameters */
+	if (pConfig->flowControler == dmacHw_FLOW_CONTROL_DMA) {
+		pRing->pHead->ctl.lo = pConfig->transferType |
+		    dmacHw_SRC_ADDRESS_UPDATE_MODE_INC |
+		    dmacHw_DST_ADDRESS_UPDATE_MODE_INC |
+		    dmacHw_SRC_TRANSACTION_WIDTH_32 |
+		    pConfig->dstMaxTransactionWidth |
+		    dmacHw_SRC_BURST_WIDTH_0 |
+		    dmacHw_DST_BURST_WIDTH_0 |
+		    pConfig->srcMasterInterface |
+		    pConfig->dstMasterInterface | dmacHw_REG_CTL_INT_EN;
+	} else {
+		uint32_t transferType = 0;
+		switch (pConfig->transferType) {
+		case dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_MEM:
+			transferType = dmacHw_REG_CTL_TTFC_PM_PERI;
+			break;
+		case dmacHw_TRANSFER_TYPE_MEM_TO_PERIPHERAL:
+			transferType = dmacHw_REG_CTL_TTFC_MP_PERI;
+			break;
+		default:
+			dmacHw_ASSERT(0);
+		}
+		pRing->pHead->ctl.lo = transferType |
+		    dmacHw_SRC_ADDRESS_UPDATE_MODE_INC |
+		    dmacHw_DST_ADDRESS_UPDATE_MODE_INC |
+		    dmacHw_SRC_TRANSACTION_WIDTH_32 |
+		    pConfig->dstMaxTransactionWidth |
+		    dmacHw_SRC_BURST_WIDTH_0 |
+		    dmacHw_DST_BURST_WIDTH_0 |
+		    pConfig->srcMasterInterface |
+		    pConfig->dstMasterInterface |
+		    pConfig->flowControler | dmacHw_REG_CTL_INT_EN;
+	}
+
+	/* Set block transaction size to one 32 bit transaction */
+	pRing->pHead->ctl.hi = dmacHw_REG_CTL_BLOCK_TS_MASK & 1;
+
+	/* Remember the descriptor to initialize the registers */
+	if (pRing->pProg == dmacHw_DESC_INIT) {
+		pRing->pProg = pRing->pHead;
+	}
+	pRing->pEnd = pRing->pHead;
+
+	/* Advance the descriptor */
+	dmacHw_NEXT_DESC(pRing, pHead);
+
+	/* Update Tail pointer if destination is a peripheral */
+	if (!dmacHw_DST_IS_MEMORY(pConfig->transferType)) {
+		pRing->pTail = pRing->pHead;
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Sets channel specific user data
+*
+*  This function associates user data to a specif DMA channel
+*
+*/
+/****************************************************************************/
+void dmacHw_setChannelUserData(dmacHw_HANDLE_t handle,	/*  [ IN ] DMA Channel handle */
+			       void *userData	/*  [ IN ] User data */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	pCblk->userData = userData;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Gets channel specific user data
+*
+*  This function returns user data specific to a DMA channel
+*
+*  @return   user data
+*/
+/****************************************************************************/
+void *dmacHw_getChannelUserData(dmacHw_HANDLE_t handle	/*  [ IN ] DMA Channel handle */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	return pCblk->userData;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Resets descriptor control information
+*
+*  @return  void
+*/
+/****************************************************************************/
+void dmacHw_resetDescriptorControl(void *pDescriptor	/*   [ IN ] Descriptor buffer  */
+    ) {
+	int i;
+	dmacHw_DESC_RING_t *pRing;
+	dmacHw_DESC_t *pDesc;
+
+	pRing = dmacHw_GET_DESC_RING(pDescriptor);
+	pDesc = pRing->pHead;
+
+	for (i = 0; i < pRing->num; i++) {
+		/* Mark descriptor is ready to use */
+		pDesc->ctl.hi = dmacHw_DESC_FREE;
+		/* Look into next link list item */
+		pDesc++;
+	}
+	pRing->pFree = pRing->pTail = pRing->pEnd = pRing->pHead;
+	pRing->pProg = dmacHw_DESC_INIT;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Displays channel specific registers and other control parameters
+*
+*  @return  void
+*
+*
+*  @note
+*     None
+*/
+/****************************************************************************/
+void dmacHw_printDebugInfo(dmacHw_HANDLE_t handle,	/*  [ IN ] DMA Channel handle */
+			   void *pDescriptor,	/*   [ IN ] Descriptor buffer */
+			   int (*fpPrint) (const char *, ...)	/*  [ IN ] Print callback function */
+    ) {
+	dmacHw_CBLK_t *pCblk = dmacHw_HANDLE_TO_CBLK(handle);
+
+	DisplayRegisterContents(pCblk->module, pCblk->channel, fpPrint);
+	DisplayDescRing(pDescriptor, fpPrint);
+}
diff --git a/arch/arm/mach-bcmring/csp/tmr/Makefile b/arch/arm/mach-bcmring/csp/tmr/Makefile
new file mode 100644
index 00000000000..244a61ab769
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/tmr/Makefile
@@ -0,0 +1 @@
+obj-y += tmrHw.o
diff --git a/arch/arm/mach-bcmring/csp/tmr/tmrHw.c b/arch/arm/mach-bcmring/csp/tmr/tmrHw.c
new file mode 100644
index 00000000000..5c1c9a0e5ed
--- /dev/null
+++ b/arch/arm/mach-bcmring/csp/tmr/tmrHw.c
@@ -0,0 +1,576 @@
+/*****************************************************************************
+* Copyright 2003 - 2008 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/****************************************************************************/
+/**
+*  @file    tmrHw.c
+*
+*  @brief   Low level Timer driver routines
+*
+*  @note
+*
+*   These routines provide basic timer functionality only.
+*/
+/****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <csp/errno.h>
+#include <csp/stdint.h>
+
+#include <csp/tmrHw.h>
+#include <mach/csp/tmrHw_reg.h>
+
+#define tmrHw_ASSERT(a)                     if (!(a)) *(char *)0 = 0
+#define tmrHw_MILLISEC_PER_SEC              (1000)
+
+#define tmrHw_LOW_1_RESOLUTION_COUNT        (tmrHw_LOW_RESOLUTION_CLOCK / tmrHw_MILLISEC_PER_SEC)
+#define tmrHw_LOW_1_MAX_MILLISEC            (0xFFFFFFFF / tmrHw_LOW_1_RESOLUTION_COUNT)
+#define tmrHw_LOW_16_RESOLUTION_COUNT       (tmrHw_LOW_1_RESOLUTION_COUNT / 16)
+#define tmrHw_LOW_16_MAX_MILLISEC           (0xFFFFFFFF / tmrHw_LOW_16_RESOLUTION_COUNT)
+#define tmrHw_LOW_256_RESOLUTION_COUNT      (tmrHw_LOW_1_RESOLUTION_COUNT / 256)
+#define tmrHw_LOW_256_MAX_MILLISEC          (0xFFFFFFFF / tmrHw_LOW_256_RESOLUTION_COUNT)
+
+#define tmrHw_HIGH_1_RESOLUTION_COUNT       (tmrHw_HIGH_RESOLUTION_CLOCK / tmrHw_MILLISEC_PER_SEC)
+#define tmrHw_HIGH_1_MAX_MILLISEC           (0xFFFFFFFF / tmrHw_HIGH_1_RESOLUTION_COUNT)
+#define tmrHw_HIGH_16_RESOLUTION_COUNT      (tmrHw_HIGH_1_RESOLUTION_COUNT / 16)
+#define tmrHw_HIGH_16_MAX_MILLISEC          (0xFFFFFFFF / tmrHw_HIGH_16_RESOLUTION_COUNT)
+#define tmrHw_HIGH_256_RESOLUTION_COUNT     (tmrHw_HIGH_1_RESOLUTION_COUNT / 256)
+#define tmrHw_HIGH_256_MAX_MILLISEC         (0xFFFFFFFF / tmrHw_HIGH_256_RESOLUTION_COUNT)
+
+static void ResetTimer(tmrHw_ID_t timerId)
+    __attribute__ ((section(".aramtext")));
+static int tmrHw_divide(int num, int denom)
+    __attribute__ ((section(".aramtext")));
+
+/****************************************************************************/
+/**
+*  @brief   Get timer capability
+*
+*  This function returns various capabilities/attributes of a timer
+*
+*  @return  Capability
+*
+*/
+/****************************************************************************/
+uint32_t tmrHw_getTimerCapability(tmrHw_ID_t timerId,	/*  [ IN ] Timer Id */
+				  tmrHw_CAPABILITY_e capability	/*  [ IN ] Timer capability */
+) {
+	switch (capability) {
+	case tmrHw_CAPABILITY_CLOCK:
+		return (timerId <=
+			1) ? tmrHw_LOW_RESOLUTION_CLOCK :
+		    tmrHw_HIGH_RESOLUTION_CLOCK;
+	case tmrHw_CAPABILITY_RESOLUTION:
+		return 32;
+	default:
+		return 0;
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Resets a timer
+*
+*  This function initializes  timer
+*
+*  @return  void
+*
+*/
+/****************************************************************************/
+static void ResetTimer(tmrHw_ID_t timerId	/*  [ IN ] Timer Id */
+) {
+	/* Reset timer */
+	pTmrHw[timerId].LoadValue = 0;
+	pTmrHw[timerId].CurrentValue = 0xFFFFFFFF;
+	pTmrHw[timerId].Control = 0;
+	pTmrHw[timerId].BackgroundLoad = 0;
+	/* Always configure as a 32 bit timer */
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_32BIT;
+	/* Clear interrupt only if raw status interrupt is set */
+	if (pTmrHw[timerId].RawInterruptStatus) {
+		pTmrHw[timerId].InterruptClear = 0xFFFFFFFF;
+	}
+}
+
+/****************************************************************************/
+/**
+*  @brief   Sets counter value for an interval in ms
+*
+*  @return   On success: Effective counter value set
+*            On failure: 0
+*
+*/
+/****************************************************************************/
+static tmrHw_INTERVAL_t SetTimerPeriod(tmrHw_ID_t timerId,	/*  [ IN ] Timer Id */
+				       tmrHw_INTERVAL_t msec	/*  [ IN ] Interval in milli-second */
+) {
+	uint32_t scale = 0;
+	uint32_t count = 0;
+
+	if (timerId == 0 || timerId == 1) {
+		if (msec <= tmrHw_LOW_1_MAX_MILLISEC) {
+			pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_1;
+			scale = tmrHw_LOW_1_RESOLUTION_COUNT;
+		} else if (msec <= tmrHw_LOW_16_MAX_MILLISEC) {
+			pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_16;
+			scale = tmrHw_LOW_16_RESOLUTION_COUNT;
+		} else if (msec <= tmrHw_LOW_256_MAX_MILLISEC) {
+			pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_256;
+			scale = tmrHw_LOW_256_RESOLUTION_COUNT;
+		} else {
+			return 0;
+		}
+
+		count = msec * scale;
+		/* Set counter value */
+		pTmrHw[timerId].LoadValue = count;
+		pTmrHw[timerId].BackgroundLoad = count;
+
+	} else if (timerId == 2 || timerId == 3) {
+		if (msec <= tmrHw_HIGH_1_MAX_MILLISEC) {
+			pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_1;
+			scale = tmrHw_HIGH_1_RESOLUTION_COUNT;
+		} else if (msec <= tmrHw_HIGH_16_MAX_MILLISEC) {
+			pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_16;
+			scale = tmrHw_HIGH_16_RESOLUTION_COUNT;
+		} else if (msec <= tmrHw_HIGH_256_MAX_MILLISEC) {
+			pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_256;
+			scale = tmrHw_HIGH_256_RESOLUTION_COUNT;
+		} else {
+			return 0;
+		}
+
+		count = msec * scale;
+		/* Set counter value */
+		pTmrHw[timerId].LoadValue = count;
+		pTmrHw[timerId].BackgroundLoad = count;
+	}
+	return count / scale;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Configures a periodic timer in terms of timer interrupt rate
+*
+*  This function initializes a periodic timer to generate specific number of
+*  timer interrupt per second
+*
+*  @return   On success: Effective timer frequency
+*            On failure: 0
+*
+*/
+/****************************************************************************/
+tmrHw_RATE_t tmrHw_setPeriodicTimerRate(tmrHw_ID_t timerId,	/*  [ IN ] Timer Id */
+					tmrHw_RATE_t rate	/*  [ IN ] Number of timer interrupt per second */
+) {
+	uint32_t resolution = 0;
+	uint32_t count = 0;
+	ResetTimer(timerId);
+
+	/* Set timer mode periodic */
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_PERIODIC;
+	pTmrHw[timerId].Control &= ~tmrHw_CONTROL_ONESHOT;
+	/* Set timer in highest resolution */
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_1;
+
+	if (rate && (timerId == 0 || timerId == 1)) {
+		if (rate > tmrHw_LOW_RESOLUTION_CLOCK) {
+			return 0;
+		}
+		resolution = tmrHw_LOW_RESOLUTION_CLOCK;
+	} else if (rate && (timerId == 2 || timerId == 3)) {
+		if (rate > tmrHw_HIGH_RESOLUTION_CLOCK) {
+			return 0;
+		} else {
+			resolution = tmrHw_HIGH_RESOLUTION_CLOCK;
+		}
+	} else {
+		return 0;
+	}
+	/* Find the counter value */
+	count = resolution / rate;
+	/* Set counter value */
+	pTmrHw[timerId].LoadValue = count;
+	pTmrHw[timerId].BackgroundLoad = count;
+
+	return resolution / count;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Configures a periodic timer to generate timer interrupt after
+*           certain time interval
+*
+*  This function initializes a periodic timer to generate timer interrupt
+*  after every time interval in millisecond
+*
+*  @return   On success: Effective interval set in milli-second
+*            On failure: 0
+*
+*/
+/****************************************************************************/
+tmrHw_INTERVAL_t tmrHw_setPeriodicTimerInterval(tmrHw_ID_t timerId,	/*  [ IN ] Timer Id */
+						tmrHw_INTERVAL_t msec	/*  [ IN ] Interval in milli-second */
+) {
+	ResetTimer(timerId);
+
+	/* Set timer mode periodic */
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_PERIODIC;
+	pTmrHw[timerId].Control &= ~tmrHw_CONTROL_ONESHOT;
+
+	return SetTimerPeriod(timerId, msec);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Configures a periodic timer to generate timer interrupt just once
+*           after certain time interval
+*
+*  This function initializes a periodic timer to generate a single ticks after
+*  certain time interval in millisecond
+*
+*  @return   On success: Effective interval set in milli-second
+*            On failure: 0
+*
+*/
+/****************************************************************************/
+tmrHw_INTERVAL_t tmrHw_setOneshotTimerInterval(tmrHw_ID_t timerId,	/*  [ IN ] Timer Id */
+					       tmrHw_INTERVAL_t msec	/*  [ IN ] Interval in milli-second */
+) {
+	ResetTimer(timerId);
+
+	/* Set timer mode oneshot */
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_PERIODIC;
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_ONESHOT;
+
+	return SetTimerPeriod(timerId, msec);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Configures a timer to run as a free running timer
+*
+*  This function initializes a timer to run as a free running timer
+*
+*  @return   Timer resolution (count / sec)
+*
+*/
+/****************************************************************************/
+tmrHw_RATE_t tmrHw_setFreeRunningTimer(tmrHw_ID_t timerId,	/*  [ IN ] Timer Id */
+				       uint32_t divider	/*  [ IN ] Dividing the clock frequency */
+) {
+	uint32_t scale = 0;
+
+	ResetTimer(timerId);
+	/* Set timer as free running mode */
+	pTmrHw[timerId].Control &= ~tmrHw_CONTROL_PERIODIC;
+	pTmrHw[timerId].Control &= ~tmrHw_CONTROL_ONESHOT;
+
+	if (divider >= 64) {
+		pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_256;
+		scale = 256;
+	} else if (divider >= 8) {
+		pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_16;
+		scale = 16;
+	} else {
+		pTmrHw[timerId].Control |= tmrHw_CONTROL_PRESCALE_1;
+		scale = 1;
+	}
+
+	if (timerId == 0 || timerId == 1) {
+		return tmrHw_divide(tmrHw_LOW_RESOLUTION_CLOCK, scale);
+	} else if (timerId == 2 || timerId == 3) {
+		return tmrHw_divide(tmrHw_HIGH_RESOLUTION_CLOCK, scale);
+	}
+
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Starts a timer
+*
+*  This function starts a preconfigured timer
+*
+*  @return  -1     - On Failure
+*            0     - On Success
+*
+*/
+/****************************************************************************/
+int tmrHw_startTimer(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_TIMER_ENABLE;
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Stops a timer
+*
+*  This function stops a running timer
+*
+*  @return  -1     - On Failure
+*            0     - On Success
+*
+*/
+/****************************************************************************/
+int tmrHw_stopTimer(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	pTmrHw[timerId].Control &= ~tmrHw_CONTROL_TIMER_ENABLE;
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Gets current timer count
+*
+*  This function returns the current timer value
+*
+*  @return  Current downcounting timer value
+*
+*/
+/****************************************************************************/
+uint32_t tmrHw_GetCurrentCount(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	/* return 32 bit timer value */
+	switch (pTmrHw[timerId].Control & tmrHw_CONTROL_MODE_MASK) {
+	case tmrHw_CONTROL_FREE_RUNNING:
+		if (pTmrHw[timerId].CurrentValue) {
+			return tmrHw_MAX_COUNT - pTmrHw[timerId].CurrentValue;
+		}
+		break;
+	case tmrHw_CONTROL_PERIODIC:
+	case tmrHw_CONTROL_ONESHOT:
+		return pTmrHw[timerId].BackgroundLoad -
+		    pTmrHw[timerId].CurrentValue;
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Gets timer count rate
+*
+*  This function returns the number of counts per second
+*
+*  @return  Count rate
+*
+*/
+/****************************************************************************/
+tmrHw_RATE_t tmrHw_getCountRate(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	uint32_t divider = 0;
+
+	switch (pTmrHw[timerId].Control & tmrHw_CONTROL_PRESCALE_MASK) {
+	case tmrHw_CONTROL_PRESCALE_1:
+		divider = 1;
+		break;
+	case tmrHw_CONTROL_PRESCALE_16:
+		divider = 16;
+		break;
+	case tmrHw_CONTROL_PRESCALE_256:
+		divider = 256;
+		break;
+	default:
+		tmrHw_ASSERT(0);
+	}
+
+	if (timerId == 0 || timerId == 1) {
+		return tmrHw_divide(tmrHw_LOW_RESOLUTION_CLOCK, divider);
+	} else {
+		return tmrHw_divide(tmrHw_HIGH_RESOLUTION_CLOCK, divider);
+	}
+	return 0;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Enables timer interrupt
+*
+*  This function enables the timer interrupt
+*
+*  @return   N/A
+*
+*/
+/****************************************************************************/
+void tmrHw_enableInterrupt(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	pTmrHw[timerId].Control |= tmrHw_CONTROL_INTERRUPT_ENABLE;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Disables timer interrupt
+*
+*  This function disable the timer interrupt
+*
+*  @return   N/A
+*
+*/
+/****************************************************************************/
+void tmrHw_disableInterrupt(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	pTmrHw[timerId].Control &= ~tmrHw_CONTROL_INTERRUPT_ENABLE;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Clears the interrupt
+*
+*  This function clears the timer interrupt
+*
+*  @return   N/A
+*
+*  @note
+*     Must be called under the context of ISR
+*/
+/****************************************************************************/
+void tmrHw_clearInterrupt(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	pTmrHw[timerId].InterruptClear = 0x1;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Gets the interrupt status
+*
+*  This function returns timer interrupt status
+*
+*  @return   Interrupt status
+*/
+/****************************************************************************/
+tmrHw_INTERRUPT_STATUS_e tmrHw_getInterruptStatus(tmrHw_ID_t timerId	/*  [ IN ] Timer id */
+) {
+	if (pTmrHw[timerId].InterruptStatus) {
+		return tmrHw_INTERRUPT_STATUS_SET;
+	} else {
+		return tmrHw_INTERRUPT_STATUS_UNSET;
+	}
+}
+
+/****************************************************************************/
+/**
+*  @brief   Indentifies a timer causing interrupt
+*
+*  This functions returns a timer causing interrupt
+*
+*  @return  0xFFFFFFFF   : No timer causing an interrupt
+*           ! 0xFFFFFFFF : timer causing an interrupt
+*  @note
+*     tmrHw_clearIntrrupt() must be called with a valid timer id after calling this function
+*/
+/****************************************************************************/
+tmrHw_ID_t tmrHw_getInterruptSource(void	/*  void */
+) {
+	int i;
+
+	for (i = 0; i < tmrHw_TIMER_NUM_COUNT; i++) {
+		if (pTmrHw[i].InterruptStatus) {
+			return i;
+		}
+	}
+
+	return 0xFFFFFFFF;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Displays specific timer registers
+*
+*
+*  @return  void
+*
+*/
+/****************************************************************************/
+void tmrHw_printDebugInfo(tmrHw_ID_t timerId,	/*  [ IN ] Timer id */
+			  int (*fpPrint) (const char *, ...)	/*  [ IN ] Print callback function */
+) {
+	(*fpPrint) ("Displaying register contents \n\n");
+	(*fpPrint) ("Timer %d: Load value              0x%X\n", timerId,
+		    pTmrHw[timerId].LoadValue);
+	(*fpPrint) ("Timer %d: Background load value   0x%X\n", timerId,
+		    pTmrHw[timerId].BackgroundLoad);
+	(*fpPrint) ("Timer %d: Control                 0x%X\n", timerId,
+		    pTmrHw[timerId].Control);
+	(*fpPrint) ("Timer %d: Interrupt clear         0x%X\n", timerId,
+		    pTmrHw[timerId].InterruptClear);
+	(*fpPrint) ("Timer %d: Interrupt raw interrupt 0x%X\n", timerId,
+		    pTmrHw[timerId].RawInterruptStatus);
+	(*fpPrint) ("Timer %d: Interrupt status        0x%X\n", timerId,
+		    pTmrHw[timerId].InterruptStatus);
+}
+
+/****************************************************************************/
+/**
+*  @brief   Use a timer to perform a busy wait delay for a number of usecs.
+*
+*  @return   N/A
+*/
+/****************************************************************************/
+void tmrHw_udelay(tmrHw_ID_t timerId,	/*  [ IN ] Timer id */
+		  unsigned long usecs /*  [ IN ] usec to delay */
+) {
+	tmrHw_RATE_t usec_tick_rate;
+	tmrHw_COUNT_t start_time;
+	tmrHw_COUNT_t delta_time;
+
+	start_time = tmrHw_GetCurrentCount(timerId);
+	usec_tick_rate = tmrHw_divide(tmrHw_getCountRate(timerId), 1000000);
+	delta_time = usecs * usec_tick_rate;
+
+	/* Busy wait */
+	while (delta_time > (tmrHw_GetCurrentCount(timerId) - start_time))
+		;
+}
+
+/****************************************************************************/
+/**
+*  @brief   Local Divide function
+*
+*  This function does the divide
+*
+*  @return divide value
+*
+*/
+/****************************************************************************/
+static int tmrHw_divide(int num, int denom)
+{
+	int r;
+	int t = 1;
+
+	/* Shift denom and t up to the largest value to optimize algorithm */
+	/* t contains the units of each divide */
+	while ((denom & 0x40000000) == 0) {	/* fails if denom=0 */
+		denom = denom << 1;
+		t = t << 1;
+	}
+
+	/* Intialize the result */
+	r = 0;
+
+	do {
+		/* Determine if there exists a positive remainder */
+		if ((num - denom) >= 0) {
+			/* Accumlate t to the result and calculate a new remainder */
+			num = num - denom;
+			r = r + t;
+		}
+		/* Continue to shift denom and shift t down to 0 */
+		denom = denom >> 1;
+		t = t >> 1;
+	} while (t != 0);
+	return r;
+}