bus: mhi: host: Add tracing support

This change adds ftrace support for following functions which
helps in debugging the issues when there is Channel state & MHI
state change and also when we receive data and control events:
1. mhi_intvec_mhi_states
2. mhi_process_data_event_ring
3. mhi_process_ctrl_ev_ring
4. mhi_gen_tre
5. mhi_update_channel_state
6. mhi_tryset_pm_state
7. mhi_pm_st_worker

Change the implementation of the arrays which has enum to strings mapping
to make it consistent in both trace header file and other files.

Where ever the trace events are added, debug messages are removed.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20240206-ftrace_support-v11-1-3f71dc187544@quicinc.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/drivers/bus/mhi/host/internal.h b/drivers/bus/mhi/host/internal.h
index 4b6deea17bcd..091244cf17c6 100644
--- a/drivers/bus/mhi/host/internal.h
+++ b/drivers/bus/mhi/host/internal.h
@@ -42,6 +42,11 @@ enum mhi_ch_state_type {
 	MHI_CH_STATE_TYPE_MAX,
 };
 
+#define MHI_CH_STATE_TYPE_LIST				\
+	ch_state_type(RESET,		"RESET")	\
+	ch_state_type(STOP,		"STOP")		\
+	ch_state_type_end(START,	"START")
+
 extern const char * const mhi_ch_state_type_str[MHI_CH_STATE_TYPE_MAX];
 #define TO_CH_STATE_TYPE_STR(state) (((state) >= MHI_CH_STATE_TYPE_MAX) ? \
 				     "INVALID_STATE" : \
@@ -50,6 +55,18 @@ extern const char * const mhi_ch_state_type_str[MHI_CH_STATE_TYPE_MAX];
 #define MHI_INVALID_BRSTMODE(mode) (mode != MHI_DB_BRST_DISABLE && \
 				    mode != MHI_DB_BRST_ENABLE)
 
+#define MHI_EE_LIST						\
+	mhi_ee(PBL,			"PRIMARY BOOTLOADER")	\
+	mhi_ee(SBL,			"SECONDARY BOOTLOADER")	\
+	mhi_ee(AMSS,			"MISSION MODE")		\
+	mhi_ee(RDDM,			"RAMDUMP DOWNLOAD MODE")\
+	mhi_ee(WFW,			"WLAN FIRMWARE")	\
+	mhi_ee(PTHRU,			"PASS THROUGH")		\
+	mhi_ee(EDL,			"EMERGENCY DOWNLOAD")	\
+	mhi_ee(FP,			"FLASH PROGRAMMER")	\
+	mhi_ee(DISABLE_TRANSITION,	"DISABLE")		\
+	mhi_ee_end(NOT_SUPPORTED,	"NOT SUPPORTED")
+
 extern const char * const mhi_ee_str[MHI_EE_MAX];
 #define TO_MHI_EXEC_STR(ee) (((ee) >= MHI_EE_MAX) ? \
 			     "INVALID_EE" : mhi_ee_str[ee])
@@ -72,6 +89,15 @@ enum dev_st_transition {
 	DEV_ST_TRANSITION_MAX,
 };
 
+#define DEV_ST_TRANSITION_LIST					\
+	dev_st_trans(PBL,		"PBL")			\
+	dev_st_trans(READY,		"READY")		\
+	dev_st_trans(SBL,		"SBL")			\
+	dev_st_trans(MISSION_MODE,	"MISSION MODE")		\
+	dev_st_trans(FP,		"FLASH PROGRAMMER")	\
+	dev_st_trans(SYS_ERR,		"SYS ERROR")		\
+	dev_st_trans_end(DISABLE,	"DISABLE")
+
 extern const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX];
 #define TO_DEV_STATE_TRANS_STR(state) (((state) >= DEV_ST_TRANSITION_MAX) ? \
 				"INVALID_STATE" : dev_state_tran_str[state])
@@ -94,6 +120,21 @@ enum mhi_pm_state {
 	MHI_PM_STATE_MAX
 };
 
+#define MHI_PM_STATE_LIST							\
+	mhi_pm_state(DISABLE,			"DISABLE")			\
+	mhi_pm_state(POR,			"POWER ON RESET")		\
+	mhi_pm_state(M0,			"M0")				\
+	mhi_pm_state(M2,			"M2")				\
+	mhi_pm_state(M3_ENTER,			"M?->M3")			\
+	mhi_pm_state(M3,			"M3")				\
+	mhi_pm_state(M3_EXIT,			"M3->M0")			\
+	mhi_pm_state(FW_DL_ERR,			"Firmware Download Error")	\
+	mhi_pm_state(SYS_ERR_DETECT,		"SYS ERROR Detect")		\
+	mhi_pm_state(SYS_ERR_PROCESS,		"SYS ERROR Process")		\
+	mhi_pm_state(SYS_ERR_FAIL,		"SYS ERROR Failure")		\
+	mhi_pm_state(SHUTDOWN_PROCESS,		"SHUTDOWN Process")		\
+	mhi_pm_state_end(LD_ERR_FATAL_DETECT,	"Linkdown or Error Fatal Detect")
+
 #define MHI_PM_DISABLE					BIT(0)
 #define MHI_PM_POR					BIT(1)
 #define MHI_PM_M0					BIT(2)