diff options
Diffstat (limited to 'include/clocksource/timer-ti-dm.h')
| -rw-r--r-- | include/clocksource/timer-ti-dm.h | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/include/clocksource/timer-ti-dm.h b/include/clocksource/timer-ti-dm.h index f6da8a132639..b0f80cfd2a26 100644 --- a/include/clocksource/timer-ti-dm.h +++ b/include/clocksource/timer-ti-dm.h @@ -247,148 +247,4 @@ int omap_dm_timers_active(void); #define OMAP_TIMER_TICK_INT_MASK_COUNT_REG \ (_OMAP_TIMER_TICK_INT_MASK_COUNT_OFFSET | (WP_TOWR << WPSHIFT)) -/* - * The below are inlined to optimize code size for system timers. Other code - * should not need these at all. - */ -#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2PLUS) -static inline u32 __omap_dm_timer_read(struct omap_dm_timer *timer, u32 reg, - int posted) -{ - if (posted) - while (readl_relaxed(timer->pend) & (reg >> WPSHIFT)) - cpu_relax(); - - return readl_relaxed(timer->func_base + (reg & 0xff)); -} - -static inline void __omap_dm_timer_write(struct omap_dm_timer *timer, - u32 reg, u32 val, int posted) -{ - if (posted) - while (readl_relaxed(timer->pend) & (reg >> WPSHIFT)) - cpu_relax(); - - writel_relaxed(val, timer->func_base + (reg & 0xff)); -} - -static inline void __omap_dm_timer_init_regs(struct omap_dm_timer *timer) -{ - u32 tidr; - - /* Assume v1 ip if bits [31:16] are zero */ - tidr = readl_relaxed(timer->io_base); - if (!(tidr >> 16)) { - timer->revision = 1; - timer->irq_stat = timer->io_base + OMAP_TIMER_V1_STAT_OFFSET; - timer->irq_ena = timer->io_base + OMAP_TIMER_V1_INT_EN_OFFSET; - timer->irq_dis = timer->io_base + OMAP_TIMER_V1_INT_EN_OFFSET; - timer->pend = timer->io_base + _OMAP_TIMER_WRITE_PEND_OFFSET; - timer->func_base = timer->io_base; - } else { - timer->revision = 2; - timer->irq_stat = timer->io_base + OMAP_TIMER_V2_IRQSTATUS; - timer->irq_ena = timer->io_base + OMAP_TIMER_V2_IRQENABLE_SET; - timer->irq_dis = timer->io_base + OMAP_TIMER_V2_IRQENABLE_CLR; - timer->pend = timer->io_base + - _OMAP_TIMER_WRITE_PEND_OFFSET + - OMAP_TIMER_V2_FUNC_OFFSET; - timer->func_base = timer->io_base + OMAP_TIMER_V2_FUNC_OFFSET; - } -} - -/* - * __omap_dm_timer_enable_posted - enables write posted mode - * @timer: pointer to timer instance handle - * - * Enables the write posted mode for the timer. When posted mode is enabled - * writes to certain timer registers are immediately acknowledged by the - * internal bus and hence prevents stalling the CPU waiting for the write to - * complete. Enabling this feature can improve performance for writing to the - * timer registers. - */ -static inline void __omap_dm_timer_enable_posted(struct omap_dm_timer *timer) -{ - if (timer->posted) - return; - - if (timer->errata & OMAP_TIMER_ERRATA_I103_I767) { - timer->posted = OMAP_TIMER_NONPOSTED; - __omap_dm_timer_write(timer, OMAP_TIMER_IF_CTRL_REG, 0, 0); - return; - } - - __omap_dm_timer_write(timer, OMAP_TIMER_IF_CTRL_REG, - OMAP_TIMER_CTRL_POSTED, 0); - timer->context.tsicr = OMAP_TIMER_CTRL_POSTED; - timer->posted = OMAP_TIMER_POSTED; -} - -/** - * __omap_dm_timer_override_errata - override errata flags for a timer - * @timer: pointer to timer handle - * @errata: errata flags to be ignored - * - * For a given timer, override a timer errata by clearing the flags - * specified by the errata argument. A specific erratum should only be - * overridden for a timer if the timer is used in such a way the erratum - * has no impact. - */ -static inline void __omap_dm_timer_override_errata(struct omap_dm_timer *timer, - u32 errata) -{ - timer->errata &= ~errata; -} - -static inline void __omap_dm_timer_stop(struct omap_dm_timer *timer, - int posted, unsigned long rate) -{ - u32 l; - - l = __omap_dm_timer_read(timer, OMAP_TIMER_CTRL_REG, posted); - if (l & OMAP_TIMER_CTRL_ST) { - l &= ~0x1; - __omap_dm_timer_write(timer, OMAP_TIMER_CTRL_REG, l, posted); -#ifdef CONFIG_ARCH_OMAP2PLUS - /* Readback to make sure write has completed */ - __omap_dm_timer_read(timer, OMAP_TIMER_CTRL_REG, posted); - /* - * Wait for functional clock period x 3.5 to make sure that - * timer is stopped - */ - udelay(3500000 / rate + 1); -#endif - } - - /* Ack possibly pending interrupt */ - writel_relaxed(OMAP_TIMER_INT_OVERFLOW, timer->irq_stat); -} - -static inline void __omap_dm_timer_load_start(struct omap_dm_timer *timer, - u32 ctrl, unsigned int load, - int posted) -{ - __omap_dm_timer_write(timer, OMAP_TIMER_COUNTER_REG, load, posted); - __omap_dm_timer_write(timer, OMAP_TIMER_CTRL_REG, ctrl, posted); -} - -static inline void __omap_dm_timer_int_enable(struct omap_dm_timer *timer, - unsigned int value) -{ - writel_relaxed(value, timer->irq_ena); - __omap_dm_timer_write(timer, OMAP_TIMER_WAKEUP_EN_REG, value, 0); -} - -static inline unsigned int -__omap_dm_timer_read_counter(struct omap_dm_timer *timer, int posted) -{ - return __omap_dm_timer_read(timer, OMAP_TIMER_COUNTER_REG, posted); -} - -static inline void __omap_dm_timer_write_status(struct omap_dm_timer *timer, - unsigned int value) -{ - writel_relaxed(value, timer->irq_stat); -} -#endif /* CONFIG_ARCH_OMAP1 || CONFIG_ARCH_OMAP2PLUS */ #endif /* __CLOCKSOURCE_DMTIMER_H */ |