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cc72da7d4d
Like the previous transition of suspend/resume, now move the power-save code to the standard runtime PM. As usual for runtime PM, it's a bit tricky, but this simplified codes a lot in the end. For keeping the usage compatibility, power_save module option still controls the whole power-saving behavior on all codecs. The value is translated to pm_runtime_*_autosuspend() and pm_runtime_allow() / pm_runtime_forbid() calls. snd_hda_power_up() and snd_hda_power_down() are translated to pm_runtime_get_sync() and pm_runtime_put_autosuspend(), respectively. Since we can do call pm_runtime_get_sync() more reliably, the sync version is used always and snd_hda_power_up_d3wait() is dropped. Another slight difference is that snd_hda_power_up()/down() don't call runtime_pm code during the suspend/resume transition phase. Calling them there isn't safe unlike our own code, resulted in unexpected behavior (endless wakeups). The hda_power_count tracepoint was removed, as it doesn't match well with the new code. Last but not least, we need to set ignore_children flag in the parent dev.power field so that the runtime PM of the controller chip won't get confused. The notification is still done in the bus pm_notify callback. We'll get rid of this hack in the later patch. Signed-off-by: Takashi Iwai <tiwai@suse.de>
119 lines
2.2 KiB
C
119 lines
2.2 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM hda
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#define TRACE_INCLUDE_FILE hda_trace
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#if !defined(_TRACE_HDA_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_HDA_H
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#include <linux/tracepoint.h>
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struct hda_bus;
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struct hda_codec;
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DECLARE_EVENT_CLASS(hda_cmd,
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TP_PROTO(struct hda_codec *codec, unsigned int val),
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TP_ARGS(codec, val),
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TP_STRUCT__entry(
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__field( unsigned int, card )
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__field( unsigned int, addr )
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__field( unsigned int, val )
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),
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TP_fast_assign(
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__entry->card = (codec)->bus->card->number;
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__entry->addr = (codec)->addr;
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__entry->val = (val);
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),
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TP_printk("[%d:%d] val=%x", __entry->card, __entry->addr, __entry->val)
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);
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DEFINE_EVENT(hda_cmd, hda_send_cmd,
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TP_PROTO(struct hda_codec *codec, unsigned int val),
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TP_ARGS(codec, val)
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);
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DEFINE_EVENT(hda_cmd, hda_get_response,
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TP_PROTO(struct hda_codec *codec, unsigned int val),
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TP_ARGS(codec, val)
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);
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TRACE_EVENT(hda_bus_reset,
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TP_PROTO(struct hda_bus *bus),
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TP_ARGS(bus),
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TP_STRUCT__entry(
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__field( unsigned int, card )
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),
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TP_fast_assign(
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__entry->card = (bus)->card->number;
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),
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TP_printk("[%d]", __entry->card)
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);
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#ifdef CONFIG_PM
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DECLARE_EVENT_CLASS(hda_power,
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TP_PROTO(struct hda_codec *codec),
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TP_ARGS(codec),
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TP_STRUCT__entry(
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__field( unsigned int, card )
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__field( unsigned int, addr )
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),
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TP_fast_assign(
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__entry->card = (codec)->bus->card->number;
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__entry->addr = (codec)->addr;
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),
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TP_printk("[%d:%d]", __entry->card, __entry->addr)
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);
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DEFINE_EVENT(hda_power, hda_power_down,
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TP_PROTO(struct hda_codec *codec),
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TP_ARGS(codec)
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);
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DEFINE_EVENT(hda_power, hda_power_up,
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TP_PROTO(struct hda_codec *codec),
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TP_ARGS(codec)
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);
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#endif /* CONFIG_PM */
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TRACE_EVENT(hda_unsol_event,
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TP_PROTO(struct hda_bus *bus, u32 res, u32 res_ex),
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TP_ARGS(bus, res, res_ex),
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TP_STRUCT__entry(
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__field( unsigned int, card )
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__field( u32, res )
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__field( u32, res_ex )
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),
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TP_fast_assign(
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__entry->card = (bus)->card->number;
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__entry->res = res;
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__entry->res_ex = res_ex;
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),
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TP_printk("[%d] res=%x, res_ex=%x", __entry->card,
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__entry->res, __entry->res_ex)
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);
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#endif /* _TRACE_HDA_H */
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/* This part must be outside protection */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#include <trace/define_trace.h>
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