+++ /dev/null
-/*
- * gptimers.c - Blackfin General Purpose Timer core API
- *
- * 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 GPLv2.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/io.h>
-
-#include <asm/blackfin.h>
-#include <asm/gptimers.h>
-
-#ifdef DEBUG
-# define tassert(expr)
-#else
-# define tassert(expr) \
- if (!(expr)) \
- printk(KERN_DEBUG "%s:%s:%i: Assertion failed: " #expr "\n", __FILE__, __func__, __LINE__);
-#endif
-
-#ifndef CONFIG_BF60x
-# define BFIN_TIMER_NUM_GROUP (BFIN_TIMER_OCTET(MAX_BLACKFIN_GPTIMERS - 1) + 1)
-#else
-# define BFIN_TIMER_NUM_GROUP 1
-#endif
-
-static struct bfin_gptimer_regs * const timer_regs[MAX_BLACKFIN_GPTIMERS] =
-{
- (void *)TIMER0_CONFIG,
- (void *)TIMER1_CONFIG,
- (void *)TIMER2_CONFIG,
-#if (MAX_BLACKFIN_GPTIMERS > 3)
- (void *)TIMER3_CONFIG,
- (void *)TIMER4_CONFIG,
- (void *)TIMER5_CONFIG,
- (void *)TIMER6_CONFIG,
- (void *)TIMER7_CONFIG,
-# if (MAX_BLACKFIN_GPTIMERS > 8)
- (void *)TIMER8_CONFIG,
- (void *)TIMER9_CONFIG,
- (void *)TIMER10_CONFIG,
-# if (MAX_BLACKFIN_GPTIMERS > 11)
- (void *)TIMER11_CONFIG,
-# endif
-# endif
-#endif
-};
-
-static struct bfin_gptimer_group_regs * const group_regs[BFIN_TIMER_NUM_GROUP] =
-{
- (void *)TIMER0_GROUP_REG,
-#if (MAX_BLACKFIN_GPTIMERS > 8)
- (void *)TIMER8_GROUP_REG,
-#endif
-};
-
-static uint32_t const trun_mask[MAX_BLACKFIN_GPTIMERS] =
-{
- TIMER_STATUS_TRUN0,
- TIMER_STATUS_TRUN1,
- TIMER_STATUS_TRUN2,
-#if (MAX_BLACKFIN_GPTIMERS > 3)
- TIMER_STATUS_TRUN3,
- TIMER_STATUS_TRUN4,
- TIMER_STATUS_TRUN5,
- TIMER_STATUS_TRUN6,
- TIMER_STATUS_TRUN7,
-# if (MAX_BLACKFIN_GPTIMERS > 8)
- TIMER_STATUS_TRUN8,
- TIMER_STATUS_TRUN9,
- TIMER_STATUS_TRUN10,
-# if (MAX_BLACKFIN_GPTIMERS > 11)
- TIMER_STATUS_TRUN11,
-# endif
-# endif
-#endif
-};
-
-static uint32_t const tovf_mask[MAX_BLACKFIN_GPTIMERS] =
-{
- TIMER_STATUS_TOVF0,
- TIMER_STATUS_TOVF1,
- TIMER_STATUS_TOVF2,
-#if (MAX_BLACKFIN_GPTIMERS > 3)
- TIMER_STATUS_TOVF3,
- TIMER_STATUS_TOVF4,
- TIMER_STATUS_TOVF5,
- TIMER_STATUS_TOVF6,
- TIMER_STATUS_TOVF7,
-# if (MAX_BLACKFIN_GPTIMERS > 8)
- TIMER_STATUS_TOVF8,
- TIMER_STATUS_TOVF9,
- TIMER_STATUS_TOVF10,
-# if (MAX_BLACKFIN_GPTIMERS > 11)
- TIMER_STATUS_TOVF11,
-# endif
-# endif
-#endif
-};
-
-static uint32_t const timil_mask[MAX_BLACKFIN_GPTIMERS] =
-{
- TIMER_STATUS_TIMIL0,
- TIMER_STATUS_TIMIL1,
- TIMER_STATUS_TIMIL2,
-#if (MAX_BLACKFIN_GPTIMERS > 3)
- TIMER_STATUS_TIMIL3,
- TIMER_STATUS_TIMIL4,
- TIMER_STATUS_TIMIL5,
- TIMER_STATUS_TIMIL6,
- TIMER_STATUS_TIMIL7,
-# if (MAX_BLACKFIN_GPTIMERS > 8)
- TIMER_STATUS_TIMIL8,
- TIMER_STATUS_TIMIL9,
- TIMER_STATUS_TIMIL10,
-# if (MAX_BLACKFIN_GPTIMERS > 11)
- TIMER_STATUS_TIMIL11,
-# endif
-# endif
-#endif
-};
-
-void set_gptimer_pwidth(unsigned int timer_id, uint32_t value)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&timer_regs[timer_id]->width, value);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_pwidth);
-
-uint32_t get_gptimer_pwidth(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return bfin_read(&timer_regs[timer_id]->width);
-}
-EXPORT_SYMBOL(get_gptimer_pwidth);
-
-void set_gptimer_period(unsigned int timer_id, uint32_t period)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&timer_regs[timer_id]->period, period);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_period);
-
-uint32_t get_gptimer_period(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return bfin_read(&timer_regs[timer_id]->period);
-}
-EXPORT_SYMBOL(get_gptimer_period);
-
-uint32_t get_gptimer_count(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return bfin_read(&timer_regs[timer_id]->counter);
-}
-EXPORT_SYMBOL(get_gptimer_count);
-
-#ifdef CONFIG_BF60x
-void set_gptimer_delay(unsigned int timer_id, uint32_t delay)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&timer_regs[timer_id]->delay, delay);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_delay);
-
-uint32_t get_gptimer_delay(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return bfin_read(&timer_regs[timer_id]->delay);
-}
-EXPORT_SYMBOL(get_gptimer_delay);
-#endif
-
-#ifdef CONFIG_BF60x
-int get_gptimer_intr(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return !!(bfin_read(&group_regs[BFIN_TIMER_OCTET(timer_id)]->data_ilat) & timil_mask[timer_id]);
-}
-EXPORT_SYMBOL(get_gptimer_intr);
-
-void clear_gptimer_intr(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&group_regs[BFIN_TIMER_OCTET(timer_id)]->data_ilat, timil_mask[timer_id]);
-}
-EXPORT_SYMBOL(clear_gptimer_intr);
-
-int get_gptimer_over(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return !!(bfin_read(&group_regs[BFIN_TIMER_OCTET(timer_id)]->stat_ilat) & tovf_mask[timer_id]);
-}
-EXPORT_SYMBOL(get_gptimer_over);
-
-void clear_gptimer_over(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&group_regs[BFIN_TIMER_OCTET(timer_id)]->stat_ilat, tovf_mask[timer_id]);
-}
-EXPORT_SYMBOL(clear_gptimer_over);
-
-int get_gptimer_run(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return !!(bfin_read(&group_regs[BFIN_TIMER_OCTET(timer_id)]->run) & trun_mask[timer_id]);
-}
-EXPORT_SYMBOL(get_gptimer_run);
-
-uint32_t get_gptimer_status(unsigned int group)
-{
- tassert(group < BFIN_TIMER_NUM_GROUP);
- return bfin_read(&group_regs[group]->data_ilat);
-}
-EXPORT_SYMBOL(get_gptimer_status);
-
-void set_gptimer_status(unsigned int group, uint32_t value)
-{
- tassert(group < BFIN_TIMER_NUM_GROUP);
- bfin_write(&group_regs[group]->data_ilat, value);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_status);
-#else
-uint32_t get_gptimer_status(unsigned int group)
-{
- tassert(group < BFIN_TIMER_NUM_GROUP);
- return bfin_read(&group_regs[group]->status);
-}
-EXPORT_SYMBOL(get_gptimer_status);
-
-void set_gptimer_status(unsigned int group, uint32_t value)
-{
- tassert(group < BFIN_TIMER_NUM_GROUP);
- bfin_write(&group_regs[group]->status, value);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_status);
-
-static uint32_t read_gptimer_status(unsigned int timer_id)
-{
- return bfin_read(&group_regs[BFIN_TIMER_OCTET(timer_id)]->status);
-}
-
-int get_gptimer_intr(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return !!(read_gptimer_status(timer_id) & timil_mask[timer_id]);
-}
-EXPORT_SYMBOL(get_gptimer_intr);
-
-void clear_gptimer_intr(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&group_regs[BFIN_TIMER_OCTET(timer_id)]->status, timil_mask[timer_id]);
-}
-EXPORT_SYMBOL(clear_gptimer_intr);
-
-int get_gptimer_over(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return !!(read_gptimer_status(timer_id) & tovf_mask[timer_id]);
-}
-EXPORT_SYMBOL(get_gptimer_over);
-
-void clear_gptimer_over(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&group_regs[BFIN_TIMER_OCTET(timer_id)]->status, tovf_mask[timer_id]);
-}
-EXPORT_SYMBOL(clear_gptimer_over);
-
-int get_gptimer_run(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return !!(read_gptimer_status(timer_id) & trun_mask[timer_id]);
-}
-EXPORT_SYMBOL(get_gptimer_run);
-#endif
-
-void set_gptimer_config(unsigned int timer_id, uint16_t config)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write(&timer_regs[timer_id]->config, config);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_config);
-
-uint16_t get_gptimer_config(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- return bfin_read(&timer_regs[timer_id]->config);
-}
-EXPORT_SYMBOL(get_gptimer_config);
-
-void enable_gptimers(uint16_t mask)
-{
- int i;
-#ifdef CONFIG_BF60x
- uint16_t imask;
- imask = bfin_read16(TIMER_DATA_IMSK);
- imask &= ~mask;
- bfin_write16(TIMER_DATA_IMSK, imask);
-#endif
- tassert((mask & ~BLACKFIN_GPTIMER_IDMASK) == 0);
- for (i = 0; i < BFIN_TIMER_NUM_GROUP; ++i) {
- bfin_write(&group_regs[i]->enable, mask & 0xFF);
- mask >>= 8;
- }
- SSYNC();
-}
-EXPORT_SYMBOL(enable_gptimers);
-
-static void _disable_gptimers(uint16_t mask)
-{
- int i;
- uint16_t m = mask;
- tassert((mask & ~BLACKFIN_GPTIMER_IDMASK) == 0);
- for (i = 0; i < BFIN_TIMER_NUM_GROUP; ++i) {
- bfin_write(&group_regs[i]->disable, m & 0xFF);
- m >>= 8;
- }
-}
-
-void disable_gptimers(uint16_t mask)
-{
-#ifndef CONFIG_BF60x
- int i;
- _disable_gptimers(mask);
- for (i = 0; i < MAX_BLACKFIN_GPTIMERS; ++i)
- if (mask & (1 << i))
- bfin_write(&group_regs[BFIN_TIMER_OCTET(i)]->status, trun_mask[i]);
- SSYNC();
-#else
- _disable_gptimers(mask);
-#endif
-}
-EXPORT_SYMBOL(disable_gptimers);
-
-void disable_gptimers_sync(uint16_t mask)
-{
- _disable_gptimers(mask);
- SSYNC();
-}
-EXPORT_SYMBOL(disable_gptimers_sync);
-
-void set_gptimer_pulse_hi(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write_or(&timer_regs[timer_id]->config, TIMER_PULSE_HI);
- SSYNC();
-}
-EXPORT_SYMBOL(set_gptimer_pulse_hi);
-
-void clear_gptimer_pulse_hi(unsigned int timer_id)
-{
- tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
- bfin_write_and(&timer_regs[timer_id]->config, ~TIMER_PULSE_HI);
- SSYNC();
-}
-EXPORT_SYMBOL(clear_gptimer_pulse_hi);
-
-uint16_t get_enabled_gptimers(void)
-{
- int i;
- uint16_t result = 0;
- for (i = 0; i < BFIN_TIMER_NUM_GROUP; ++i)
- result |= (bfin_read(&group_regs[i]->enable) << (i << 3));
- return result;
-}
-EXPORT_SYMBOL(get_enabled_gptimers);
-
-MODULE_AUTHOR("Axel Weiss (awe@aglaia-gmbh.de)");
-MODULE_DESCRIPTION("Blackfin General Purpose Timers API");
-MODULE_LICENSE("GPL");
git.samba.org / sfrench / cifs-2.6.git / blobdiff