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author | Leo Chen <leochen@broadcom.com> | 2009-08-07 20:09:49 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-08-15 16:01:48 +0100 |
commit | 7ba09020287fa6c181707490ea7143abb3db55b1 (patch) | |
tree | 99871a5130ab850950236067b84034f768ef5401 /arch/arm/mach-bcmring/include | |
parent | cf2ddacb567e85f40241f67b240fa445db7a424d (diff) | |
download | linux-3.10-7ba09020287fa6c181707490ea7143abb3db55b1.tar.gz linux-3.10-7ba09020287fa6c181707490ea7143abb3db55b1.tar.bz2 linux-3.10-7ba09020287fa6c181707490ea7143abb3db55b1.zip |
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>
Diffstat (limited to 'arch/arm/mach-bcmring/include')
-rw-r--r-- | arch/arm/mach-bcmring/include/csp/tmrHw.h | 263 | ||||
-rw-r--r-- | arch/arm/mach-bcmring/include/mach/csp/tmrHw_reg.h | 82 |
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 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 */ |