- 根目录:
- arch
- blackfin
- include
- asm
- gptimers.h
/*
* gptimers.h - Blackfin General Purpose Timer structs/defines/prototypes
*
* Copyright (c) 2005-2008 Analog Devices Inc.
* Copyright (C) 2005 John DeHority
* Copyright (C) 2006 Hella Aglaia GmbH (awe@aglaia-gmbh.de)
*
* Licensed under the GPL-2.
*/
#ifndef _BLACKFIN_TIMERS_H_
#define _BLACKFIN_TIMERS_H_
#include <linux/types.h>
#include <asm/blackfin.h>
/*
* BF51x/BF52x/BF537: 8 timers:
*/
#if defined(CONFIG_BF51x) || defined(CONFIG_BF52x) || defined(BF537_FAMILY)
# define MAX_BLACKFIN_GPTIMERS 8
# define TIMER0_GROUP_REG TIMER_ENABLE
#endif
/*
* BF54x: 11 timers (BF542: 8 timers):
*/
#if defined(CONFIG_BF54x)
# ifdef CONFIG_BF542
# define MAX_BLACKFIN_GPTIMERS 8
# else
# define MAX_BLACKFIN_GPTIMERS 11
# define TIMER8_GROUP_REG TIMER_ENABLE1
# define TIMER_GROUP2 1
# endif
# define TIMER0_GROUP_REG TIMER_ENABLE0
#endif
/*
* BF561: 12 timers:
*/
#if defined(CONFIG_BF561)
# define MAX_BLACKFIN_GPTIMERS 12
# define TIMER0_GROUP_REG TMRS8_ENABLE
# define TIMER8_GROUP_REG TMRS4_ENABLE
# define TIMER_GROUP2 1
#endif
/*
* All others: 3 timers:
*/
#define TIMER_GROUP1 0
#if !defined(MAX_BLACKFIN_GPTIMERS)
# define MAX_BLACKFIN_GPTIMERS 3
# define TIMER0_GROUP_REG TIMER_ENABLE
#endif
#define BLACKFIN_GPTIMER_IDMASK ((1UL << MAX_BLACKFIN_GPTIMERS) - 1)
#define BFIN_TIMER_OCTET(x) ((x) >> 3)
/* used in masks for timer_enable() and timer_disable() */
#define TIMER0bit 0x0001 /* 0001b */
#define TIMER1bit 0x0002 /* 0010b */
#define TIMER2bit 0x0004 /* 0100b */
#define TIMER3bit 0x0008
#define TIMER4bit 0x0010
#define TIMER5bit 0x0020
#define TIMER6bit 0x0040
#define TIMER7bit 0x0080
#define TIMER8bit 0x0100
#define TIMER9bit 0x0200
#define TIMER10bit 0x0400
#define TIMER11bit 0x0800
#define TIMER0_id 0
#define TIMER1_id 1
#define TIMER2_id 2
#define TIMER3_id 3
#define TIMER4_id 4
#define TIMER5_id 5
#define TIMER6_id 6
#define TIMER7_id 7
#define TIMER8_id 8
#define TIMER9_id 9
#define TIMER10_id 10
#define TIMER11_id 11
/* associated timers for ppi framesync: */
#if defined(CONFIG_BF561)
# define FS0_1_TIMER_ID TIMER8_id
# define FS0_2_TIMER_ID TIMER9_id
# define FS1_1_TIMER_ID TIMER10_id
# define FS1_2_TIMER_ID TIMER11_id
# define FS0_1_TIMER_BIT TIMER8bit
# define FS0_2_TIMER_BIT TIMER9bit
# define FS1_1_TIMER_BIT TIMER10bit
# define FS1_2_TIMER_BIT TIMER11bit
# undef FS1_TIMER_ID
# undef FS2_TIMER_ID
# undef FS1_TIMER_BIT
# undef FS2_TIMER_BIT
#else
# define FS1_TIMER_ID TIMER0_id
# define FS2_TIMER_ID TIMER1_id
# define FS1_TIMER_BIT TIMER0bit
# define FS2_TIMER_BIT TIMER1bit
#endif
/*
* Timer Configuration Register Bits
*/
#define TIMER_ERR 0xC000
#define TIMER_ERR_OVFL 0x4000
#define TIMER_ERR_PROG_PER 0x8000
#define TIMER_ERR_PROG_PW 0xC000
#define TIMER_EMU_RUN 0x0200
#define TIMER_TOGGLE_HI 0x0100
#define TIMER_CLK_SEL 0x0080
#define TIMER_OUT_DIS 0x0040
#define TIMER_TIN_SEL 0x0020
#define TIMER_IRQ_ENA 0x0010
#define TIMER_PERIOD_CNT 0x0008
#define TIMER_PULSE_HI 0x0004
#define TIMER_MODE 0x0003
#define TIMER_MODE_PWM 0x0001
#define TIMER_MODE_WDTH 0x0002
#define TIMER_MODE_EXT_CLK 0x0003
/*
* Timer Status Register Bits
*/
#define TIMER_STATUS_TIMIL0 0x0001
#define TIMER_STATUS_TIMIL1 0x0002
#define TIMER_STATUS_TIMIL2 0x0004
#define TIMER_STATUS_TIMIL3 0x00000008
#define TIMER_STATUS_TIMIL4 0x00010000
#define TIMER_STATUS_TIMIL5 0x00020000
#define TIMER_STATUS_TIMIL6 0x00040000
#define TIMER_STATUS_TIMIL7 0x00080000
#define TIMER_STATUS_TIMIL8 0x0001
#define TIMER_STATUS_TIMIL9 0x0002
#define TIMER_STATUS_TIMIL10 0x0004
#define TIMER_STATUS_TIMIL11 0x0008
#define TIMER_STATUS_TOVF0 0x0010 /* timer 0 overflow error */
#define TIMER_STATUS_TOVF1 0x0020
#define TIMER_STATUS_TOVF2 0x0040
#define TIMER_STATUS_TOVF3 0x00000080
#define TIMER_STATUS_TOVF4 0x00100000
#define TIMER_STATUS_TOVF5 0x00200000
#define TIMER_STATUS_TOVF6 0x00400000
#define TIMER_STATUS_TOVF7 0x00800000
#define TIMER_STATUS_TOVF8 0x0010
#define TIMER_STATUS_TOVF9 0x0020
#define TIMER_STATUS_TOVF10 0x0040
#define TIMER_STATUS_TOVF11 0x0080
/*
* Timer Slave Enable Status : write 1 to clear
*/
#define TIMER_STATUS_TRUN0 0x1000
#define TIMER_STATUS_TRUN1 0x2000
#define TIMER_STATUS_TRUN2 0x4000
#define TIMER_STATUS_TRUN3 0x00008000
#define TIMER_STATUS_TRUN4 0x10000000
#define TIMER_STATUS_TRUN5 0x20000000
#define TIMER_STATUS_TRUN6 0x40000000
#define TIMER_STATUS_TRUN7 0x80000000
#define TIMER_STATUS_TRUN 0xF000F000
#define TIMER_STATUS_TRUN8 0x1000
#define TIMER_STATUS_TRUN9 0x2000
#define TIMER_STATUS_TRUN10 0x4000
#define TIMER_STATUS_TRUN11 0x8000
/* The actual gptimer API */
void set_gptimer_pwidth(unsigned int timer_id, uint32_t width);
uint32_t get_gptimer_pwidth(unsigned int timer_id);
void set_gptimer_period(unsigned int timer_id, uint32_t period);
uint32_t get_gptimer_period(unsigned int timer_id);
uint32_t get_gptimer_count(unsigned int timer_id);
int get_gptimer_intr(unsigned int timer_id);
void clear_gptimer_intr(unsigned int timer_id);
int get_gptimer_over(unsigned int timer_id);
void clear_gptimer_over(unsigned int timer_id);
void set_gptimer_config(unsigned int timer_id, uint16_t config);
uint16_t get_gptimer_config(unsigned int timer_id);
int get_gptimer_run(unsigned int timer_id);
void set_gptimer_pulse_hi(unsigned int timer_id);
void clear_gptimer_pulse_hi(unsigned int timer_id);
void enable_gptimers(uint16_t mask);
void disable_gptimers(uint16_t mask);
void disable_gptimers_sync(uint16_t mask);
uint16_t get_enabled_gptimers(void);
uint32_t get_gptimer_status(unsigned int group);
void set_gptimer_status(unsigned int group, uint32_t value);
static inline void enable_gptimer(unsigned int timer_id)
{
enable_gptimers(1 << timer_id);
}
static inline void disable_gptimer(unsigned int timer_id)
{
disable_gptimers(1 << timer_id);
}
/*
* All Blackfin system MMRs are padded to 32bits even if the register
* itself is only 16bits. So use a helper macro to streamline this.
*/
#define __BFP(m) u16 m; u16 __pad_##m
/*
* bfin timer registers layout
*/
struct bfin_gptimer_regs {
__BFP(config);
u32 counter;
u32 period;
u32 width;
};
/*
* bfin group timer registers layout
*/
struct bfin_gptimer_group_regs {
__BFP(enable);
__BFP(disable);
u32 status;
};
#undef __BFP
#endif