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>

2 files changed, 345 insertions, 0 deletions

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 */