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-rw-r--r--arch/arm/mach-bcmring/csp/tmr/Makefile1
-rw-r--r--arch/arm/mach-bcmring/csp/tmr/tmrHw.c576
-rw-r--r--arch/arm/mach-bcmring/include/csp/tmrHw.h263
-rw-r--r--arch/arm/mach-bcmring/include/mach/csp/tmrHw_reg.h82
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 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;
+}
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 00000000000..f1236d00cb9
--- /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 00000000000..3080ac7239a
--- /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 */
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