mirror of https://gitee.com/openkylin/linux.git
OMAP3: PM: Add milliseconds interface to suspend wakeup timer
Millisecond resolution is possible and there are use cases for it (automatic testing). Seconds-based interface is preserved for compatibility. Signed-off-by: Ari Kauppi <Ext-Ari.Kauppi@nokia.com> Reviewed-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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@ -548,6 +548,9 @@ static int option_set(void *data, u64 val)
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{
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u32 *option = data;
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if (option == &wakeup_timer_milliseconds && val >= 1000)
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return -EINVAL;
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*option = val;
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if (option == &enable_off_mode)
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@ -43,6 +43,7 @@ extern int omap3_pm_get_suspend_state(struct powerdomain *pwrdm);
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extern int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state);
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extern u32 wakeup_timer_seconds;
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extern u32 wakeup_timer_milliseconds;
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extern struct omap_dm_timer *gptimer_wakeup;
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#ifdef CONFIG_PM_DEBUG
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@ -58,6 +58,7 @@
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u32 enable_off_mode;
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u32 sleep_while_idle;
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u32 wakeup_timer_seconds;
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u32 wakeup_timer_milliseconds;
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struct power_state {
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struct powerdomain *pwrdm;
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@ -555,20 +556,21 @@ static void omap3_pm_idle(void)
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#ifdef CONFIG_SUSPEND
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static suspend_state_t suspend_state;
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static void omap2_pm_wakeup_on_timer(u32 seconds)
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static void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds)
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{
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u32 tick_rate, cycles;
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if (!seconds)
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if (!seconds && !milliseconds)
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return;
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tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer_wakeup));
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cycles = tick_rate * seconds;
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cycles = tick_rate * seconds + tick_rate * milliseconds / 1000;
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omap_dm_timer_stop(gptimer_wakeup);
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omap_dm_timer_set_load_start(gptimer_wakeup, 0, 0xffffffff - cycles);
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pr_info("PM: Resume timer in %d secs (%d ticks at %d ticks/sec.)\n",
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seconds, cycles, tick_rate);
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pr_info("PM: Resume timer in %u.%03u secs"
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" (%d ticks at %d ticks/sec.)\n",
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seconds, milliseconds, cycles, tick_rate);
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}
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static int omap3_pm_prepare(void)
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@ -582,8 +584,9 @@ static int omap3_pm_suspend(void)
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struct power_state *pwrst;
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int state, ret = 0;
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if (wakeup_timer_seconds)
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omap2_pm_wakeup_on_timer(wakeup_timer_seconds);
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if (wakeup_timer_seconds || wakeup_timer_milliseconds)
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omap2_pm_wakeup_on_timer(wakeup_timer_seconds,
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wakeup_timer_milliseconds);
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/* Read current next_pwrsts */
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list_for_each_entry(pwrst, &pwrst_list, node)
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