ARM: 5660/1: bcmring: add csp timer block header and source files

add csp timer block header and source files

Signed-off-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

4 files changed, 922 insertions, 0 deletions

diff --git a/arch/arm/mach-bcmring/csp/tmr/Makefile b/arch/arm/mach-bcmring/csp/tmr/Makefile
new file mode 100644
index 000000000000..244a61ab7697
--- /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 000000000000..5c1c9a0e5ed2
--- /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;
+}
diff --git a/arch/arm/mach-bcmring/include/csp/tmrHw.h b/arch/arm/mach-bcmring/include/csp/tmrHw.h
new file mode 100644
index 000000000000..f1236d00cb97
--- /dev/null
+++ b/arch/arm/mach-bcmring/include/csp/tmrHw.h
@@ -0,0 +1,263 @@
+/*****************************************************************************
+* Copyright 2004 - 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.h
+*
+*  @brief   API definitions for low level Timer driver
+*
+*/
+/****************************************************************************/
+#ifndef _TMRHW_H
+#define _TMRHW_H
+
+#include <csp/stdint.h>
+
+typedef uint32_t tmrHw_ID_t;    /* Timer ID */
+typedef uint32_t tmrHw_COUNT_t; /* Timer count */
+typedef uint32_t tmrHw_INTERVAL_t;      /* Timer interval */
+typedef uint32_t tmrHw_RATE_t;  /* Timer event (count/interrupt) rate */
+
+typedef enum {
+        tmrHw_INTERRUPT_STATUS_SET,     /* Interrupted  */
+        tmrHw_INTERRUPT_STATUS_UNSET    /* No Interrupt */
+} tmrHw_INTERRUPT_STATUS_e;
+
+typedef enum {
+        tmrHw_CAPABILITY_CLOCK, /* Clock speed in HHz */
+        tmrHw_CAPABILITY_RESOLUTION     /* Timer resolution in bits */
+} tmrHw_CAPABILITY_e;
+
+/****************************************************************************/
+/**
+*  @brief   Get timer capability
+*
+*  This function returns various capabilities/attributes of a timer
+*
+*  @return  Numeric capability
+*
+*/
+/****************************************************************************/
+uint32_t tmrHw_getTimerCapability(tmrHw_ID_t timerId,   /*  [ IN ] Timer Id */
+                                  tmrHw_CAPABILITY_e capability /*  [ IN ] Timer capability */
+);
+
+/****************************************************************************/
+/**
+*  @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 */
+);
+
+/****************************************************************************/
+/**
+*  @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 milisecond
+*
+*  @return   On success: Effective interval set in mili-second
+*            On failure: 0
+*
+*/
+/****************************************************************************/
+tmrHw_INTERVAL_t tmrHw_setPeriodicTimerInterval(tmrHw_ID_t timerId,     /*  [ IN ] Timer Id */
+                                                tmrHw_INTERVAL_t msec   /*  [ IN ] Interval in mili-second */
+);
+
+/****************************************************************************/
+/**
+*  @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 milisecond
+*
+*  @return   On success: Effective interval set in mili-second
+*            On failure: 0
+*
+*/
+/****************************************************************************/
+tmrHw_INTERVAL_t tmrHw_setOneshotTimerInterval(tmrHw_ID_t timerId,      /*  [ IN ] Timer Id */
+                                               tmrHw_INTERVAL_t msec    /*  [ IN ] Interval in mili-second */
+);
+
+/****************************************************************************/
+/**
+*  @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 */
+) __attribute__ ((section(".aramtext")));
+
+/****************************************************************************/
+/**
+*  @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 */
+) __attribute__ ((section(".aramtext")));
+
+/****************************************************************************/
+/**
+*  @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 */
+);
+
+/****************************************************************************/
+/**
+*  @brief   Gets current timer count
+*
+*  This function returns the current timer value
+*
+*  @return  Current downcounting timer value
+*
+*/
+/****************************************************************************/
+tmrHw_COUNT_t tmrHw_GetCurrentCount(tmrHw_ID_t timerId  /*  [ IN ] Timer id */
+) __attribute__ ((section(".aramtext")));
+
+/****************************************************************************/
+/**
+*  @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 */
+) __attribute__ ((section(".aramtext")));
+
+/****************************************************************************/
+/**
+*  @brief   Enables timer interrupt
+*
+*  This function enables the timer interrupt
+*
+*  @return   N/A
+*
+*/
+/****************************************************************************/
+void tmrHw_enableInterrupt(tmrHw_ID_t timerId   /*  [ IN ] Timer id */
+);
+
+/****************************************************************************/
+/**
+*  @brief   Disables timer interrupt
+*
+*  This function disable the timer interrupt
+*
+*  @return   N/A
+*/
+/****************************************************************************/
+void tmrHw_disableInterrupt(tmrHw_ID_t timerId  /*  [ IN ] Timer id */
+);
+
+/****************************************************************************/
+/**
+*  @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 */
+);
+
+/****************************************************************************/
+/**
+*  @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 */
+);
+
+/****************************************************************************/
+/**
+*  @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);
+
+/****************************************************************************/
+/**
+*  @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 */
+);
+
+/****************************************************************************/
+/**
+*  @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 */
+) __attribute__ ((section(".aramtext")));
+
+#endif /* _TMRHW_H */
diff --git a/arch/arm/mach-bcmring/include/mach/csp/tmrHw_reg.h b/arch/arm/mach-bcmring/include/mach/csp/tmrHw_reg.h
new file mode 100644
index 000000000000..3080ac7239a1
--- /dev/null
+++ b/arch/arm/mach-bcmring/include/mach/csp/tmrHw_reg.h
@@ -0,0 +1,82 @@
+/*****************************************************************************
+* Copyright 2004 - 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_reg.h
+*
+*  @brief   Definitions for low level Timer registers
+*
+*/
+/****************************************************************************/
+#ifndef _TMRHW_REG_H
+#define _TMRHW_REG_H
+
+#include <mach/csp/mm_io.h>
+#include <mach/csp/hw_cfg.h>
+/* Base address */
+#define tmrHw_MODULE_BASE_ADDR          MM_IO_BASE_TMR
+
+/*
+This platform has four different timers running at different clock speed
+
+Timer one   (Timer ID 0) runs at  25 MHz
+Timer two   (Timer ID 1) runs at  25 MHz
+Timer three (Timer ID 2) runs at 150 MHz
+Timer four  (Timer ID 3) runs at 150 MHz
+*/
+#define tmrHw_LOW_FREQUENCY_MHZ         25      /* Always 25MHz from XTAL */
+#define tmrHw_LOW_FREQUENCY_HZ          25000000
+
+#if defined(CFG_GLOBAL_CHIP) && (CFG_GLOBAL_CHIP == FPGA11107)
+#define tmrHw_HIGH_FREQUENCY_MHZ        150     /* Always 150MHz for FPGA */
+#define tmrHw_HIGH_FREQUENCY_HZ         150000000
+#else
+#define tmrHw_HIGH_FREQUENCY_HZ         HW_CFG_BUS_CLK_HZ
+#define tmrHw_HIGH_FREQUENCY_MHZ        (HW_CFG_BUS_CLK_HZ / 1000000)
+#endif
+
+#define tmrHw_LOW_RESOLUTION_CLOCK      tmrHw_LOW_FREQUENCY_HZ
+#define tmrHw_HIGH_RESOLUTION_CLOCK     tmrHw_HIGH_FREQUENCY_HZ
+#define tmrHw_MAX_COUNT                 (0xFFFFFFFF)    /* maximum number of count a timer can count */
+#define tmrHw_TIMER_NUM_COUNT           (4)     /* Number of timer module supported */
+
+typedef struct {
+        uint32_t LoadValue;     /* Load value for timer */
+        uint32_t CurrentValue;  /* Current value for timer */
+        uint32_t Control;       /* Control register */
+        uint32_t InterruptClear;        /* Interrupt clear register */
+        uint32_t RawInterruptStatus;    /* Raw interrupt status */
+        uint32_t InterruptStatus;       /* Masked interrupt status */
+        uint32_t BackgroundLoad;        /* Background load value */
+        uint32_t padding;       /* Padding register */
+} tmrHw_REG_t;
+
+/* Control bot masks */
+#define tmrHw_CONTROL_TIMER_ENABLE            0x00000080
+#define tmrHw_CONTROL_PERIODIC                0x00000040
+#define tmrHw_CONTROL_INTERRUPT_ENABLE        0x00000020
+#define tmrHw_CONTROL_PRESCALE_MASK           0x0000000C
+#define tmrHw_CONTROL_PRESCALE_1              0x00000000
+#define tmrHw_CONTROL_PRESCALE_16             0x00000004
+#define tmrHw_CONTROL_PRESCALE_256            0x00000008
+#define tmrHw_CONTROL_32BIT                   0x00000002
+#define tmrHw_CONTROL_ONESHOT                 0x00000001
+#define tmrHw_CONTROL_FREE_RUNNING            0x00000000
+
+#define tmrHw_CONTROL_MODE_MASK               (tmrHw_CONTROL_PERIODIC | tmrHw_CONTROL_ONESHOT)
+
+#define pTmrHw ((volatile tmrHw_REG_t *)tmrHw_MODULE_BASE_ADDR)
+
+#endif /* _TMRHW_REG_H */