ALSA: hda - add hda_intel_trace.h

This patch creates hda_intel_trace.h to add some pm trace functions
used in hda_intel.c

Signed-off-by: Libin Yang <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/hda/Makefile

···
 
 # for trace-points
 CFLAGS_hda_controller.o := -I$(src)
+CFLAGS_hda_intel.o := -I$(src)
 
 snd-hda-codec-generic-objs :=	hda_generic.o
 snd-hda-codec-realtek-objs :=	patch_realtek.o

sound/pci/hda/hda_intel.c

···
 #include "hda_controller.h"
 #include "hda_intel.h"
 
+#define CREATE_TRACE_POINTS
+#include "hda_intel_trace.h"
+
 /* position fix mode */
 enum {
 	POS_FIX_AUTO,
···
 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
 		&& hda->need_i915_power)
 		hda_display_power(hda, false);
+
+	trace_azx_suspend(chip);
 	return 0;
 }
 
···
 	hda_intel_init_chip(chip, true);
 
 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+
+	trace_azx_resume(chip);
 	return 0;
 }
 #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
···
 		&& hda->need_i915_power)
 		hda_display_power(hda, false);
 
+	trace_azx_runtime_suspend(chip);
 	return 0;
 }
 
···
 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
 			~STATESTS_INT_MASK);
 
+	trace_azx_runtime_resume(chip);
 	return 0;
 }
 

sound/pci/hda/hda_intel_trace.h

···
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hda_intel
+#define TRACE_INCLUDE_FILE hda_intel_trace
+
+#if !defined(_TRACE_HDA_INTEL_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_HDA_INTEL_H
+
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(hda_pm,
+	TP_PROTO(struct azx *chip),
+
+	TP_ARGS(chip),
+
+	TP_STRUCT__entry(
+		__field(int, dev_index)
+	),
+
+	TP_fast_assign(
+		__entry->dev_index = (chip)->dev_index;
+	),
+
+	TP_printk("card index: %d", __entry->dev_index)
+);
+
+DEFINE_EVENT(hda_pm, azx_suspend,
+	TP_PROTO(struct azx *chip),
+	TP_ARGS(chip)
+);
+
+DEFINE_EVENT(hda_pm, azx_resume,
+	TP_PROTO(struct azx *chip),
+	TP_ARGS(chip)
+);
+
+#ifdef CONFIG_PM
+DEFINE_EVENT(hda_pm, azx_runtime_suspend,
+	TP_PROTO(struct azx *chip),
+	TP_ARGS(chip)
+);
+
+DEFINE_EVENT(hda_pm, azx_runtime_resume,
+	TP_PROTO(struct azx *chip),
+	TP_ARGS(chip)
+);
+#endif
+
+#endif /* _TRACE_HDA_INTEL_H */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#include <trace/define_trace.h>