Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

15 files changed, 456 insertions, 152 deletions

diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c
index b6dfe4340d..65ae758f31 100644
--- a/drivers/bus/brcmstb_gisb.c
+++ b/drivers/bus/brcmstb_gisb.c
@@ -96,6 +96,20 @@ static const int gisb_offsets_bcm7400[] = {
 	[ARB_ERR_CAP_MASTER]	= 0x0d8,
 };
 
+static const int gisb_offsets_bcm74165[] = {
+	[ARB_TIMER]		= 0x008,
+	[ARB_BP_CAP_CLR]	= 0x044,
+	[ARB_BP_CAP_HI_ADDR]	= -1,
+	[ARB_BP_CAP_ADDR]	= 0x048,
+	[ARB_BP_CAP_STATUS]	= 0x058,
+	[ARB_BP_CAP_MASTER]	= 0x05c,
+	[ARB_ERR_CAP_CLR]	= 0x038,
+	[ARB_ERR_CAP_HI_ADDR]	= -1,
+	[ARB_ERR_CAP_ADDR]	= 0x020,
+	[ARB_ERR_CAP_STATUS]	= 0x030,
+	[ARB_ERR_CAP_MASTER]	= 0x034,
+};
+
 static const int gisb_offsets_bcm7435[] = {
 	[ARB_TIMER]		= 0x00c,
 	[ARB_BP_CAP_CLR]	= 0x014,
@@ -393,6 +407,7 @@ static const struct of_device_id brcmstb_gisb_arb_of_match[] = {
 	{ .compatible = "brcm,bcm7400-gisb-arb", .data = gisb_offsets_bcm7400 },
 	{ .compatible = "brcm,bcm7278-gisb-arb", .data = gisb_offsets_bcm7278 },
 	{ .compatible = "brcm,bcm7038-gisb-arb", .data = gisb_offsets_bcm7038 },
+	{ .compatible = "brcm,bcm74165-gisb-arb", .data = gisb_offsets_bcm74165 },
 	{ },
 };
 
diff --git a/drivers/bus/bt1-apb.c b/drivers/bus/bt1-apb.c
index e97c1d1c75..595fb22b73 100644
--- a/drivers/bus/bt1-apb.c
+++ b/drivers/bus/bt1-apb.c
@@ -22,7 +22,6 @@
 #include <linux/clk.h>
 #include <linux/reset.h>
 #include <linux/time64.h>
-#include <linux/clk.h>
 #include <linux/sysfs.h>
 
 #define APB_EHB_ISR			0x00
diff --git a/drivers/bus/mhi/common.h b/drivers/bus/mhi/common.h
index f794b9c804..dda340aaed 100644
--- a/drivers/bus/mhi/common.h
+++ b/drivers/bus/mhi/common.h
@@ -297,30 +297,30 @@ struct mhi_ring_element {
 	__le32 dword[2];
 };
 
+#define MHI_STATE_LIST				\
+	mhi_state(RESET,	"RESET")	\
+	mhi_state(READY,	"READY")	\
+	mhi_state(M0,		"M0")		\
+	mhi_state(M1,		"M1")		\
+	mhi_state(M2,		"M2")		\
+	mhi_state(M3,		"M3")		\
+	mhi_state(M3_FAST,	"M3_FAST")	\
+	mhi_state(BHI,		"BHI")		\
+	mhi_state_end(SYS_ERR,	"SYS ERROR")
+
+#undef mhi_state
+#undef mhi_state_end
+
+#define mhi_state(a, b)		case MHI_STATE_##a: return b;
+#define mhi_state_end(a, b)	case MHI_STATE_##a: return b;
+
 static inline const char *mhi_state_str(enum mhi_state state)
 {
 	switch (state) {
-	case MHI_STATE_RESET:
-		return "RESET";
-	case MHI_STATE_READY:
-		return "READY";
-	case MHI_STATE_M0:
-		return "M0";
-	case MHI_STATE_M1:
-		return "M1";
-	case MHI_STATE_M2:
-		return "M2";
-	case MHI_STATE_M3:
-		return "M3";
-	case MHI_STATE_M3_FAST:
-		return "M3 FAST";
-	case MHI_STATE_BHI:
-		return "BHI";
-	case MHI_STATE_SYS_ERR:
-		return "SYS ERROR";
+	MHI_STATE_LIST
 	default:
 		return "Unknown state";
 	}
-};
+}
 
 #endif /* _MHI_COMMON_H */
diff --git a/drivers/bus/mhi/ep/main.c b/drivers/bus/mhi/ep/main.c
index 65f1f6b9b5..f8f674adf1 100644
--- a/drivers/bus/mhi/ep/main.c
+++ b/drivers/bus/mhi/ep/main.c
@@ -1149,8 +1149,9 @@ int mhi_ep_power_up(struct mhi_ep_cntrl *mhi_cntrl)
 	mhi_ep_mmio_mask_interrupts(mhi_cntrl);
 	mhi_ep_mmio_init(mhi_cntrl);
 
-	mhi_cntrl->mhi_event = kzalloc(mhi_cntrl->event_rings * (sizeof(*mhi_cntrl->mhi_event)),
-					GFP_KERNEL);
+	mhi_cntrl->mhi_event = kcalloc(mhi_cntrl->event_rings,
+				       sizeof(*mhi_cntrl->mhi_event),
+				       GFP_KERNEL);
 	if (!mhi_cntrl->mhi_event)
 		return -ENOMEM;
 
diff --git a/drivers/bus/mhi/host/boot.c b/drivers/bus/mhi/host/boot.c
index edc0ec5a09..dedd29ca8d 100644
--- a/drivers/bus/mhi/host/boot.c
+++ b/drivers/bus/mhi/host/boot.c
@@ -395,7 +395,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
 	void *buf;
 	dma_addr_t dma_addr;
 	size_t size, fw_sz;
-	int i, ret;
+	int ret;
 
 	if (MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) {
 		dev_err(dev, "Device MHI is not in valid state\n");
@@ -408,15 +408,6 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
 	if (ret)
 		dev_err(dev, "Could not capture serial number via BHI\n");
 
-	for (i = 0; i < ARRAY_SIZE(mhi_cntrl->oem_pk_hash); i++) {
-		ret = mhi_read_reg(mhi_cntrl, mhi_cntrl->bhi, BHI_OEMPKHASH(i),
-				   &mhi_cntrl->oem_pk_hash[i]);
-		if (ret) {
-			dev_err(dev, "Could not capture OEM PK HASH via BHI\n");
-			break;
-		}
-	}
-
 	/* wait for ready on pass through or any other execution environment */
 	if (!MHI_FW_LOAD_CAPABLE(mhi_cntrl->ee))
 		goto fw_load_ready_state;
diff --git a/drivers/bus/mhi/host/init.c b/drivers/bus/mhi/host/init.c
index 8e5ec1a409..44f934981d 100644
--- a/drivers/bus/mhi/host/init.c
+++ b/drivers/bus/mhi/host/init.c
@@ -20,51 +20,49 @@
 #include <linux/wait.h>
 #include "internal.h"
 
+#define CREATE_TRACE_POINTS
+#include "trace.h"
+
 static DEFINE_IDA(mhi_controller_ida);
 
+#undef mhi_ee
+#undef mhi_ee_end
+
+#define mhi_ee(a, b)		[MHI_EE_##a] = b,
+#define mhi_ee_end(a, b)	[MHI_EE_##a] = b,
+
 const char * const mhi_ee_str[MHI_EE_MAX] = {
-	[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_NOT_SUPPORTED] = "NOT SUPPORTED",
+	MHI_EE_LIST
 };
 
+#undef dev_st_trans
+#undef dev_st_trans_end
+
+#define dev_st_trans(a, b)	[DEV_ST_TRANSITION_##a] = b,
+#define dev_st_trans_end(a, b)	[DEV_ST_TRANSITION_##a] = b,
+
 const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
-	[DEV_ST_TRANSITION_PBL] = "PBL",
-	[DEV_ST_TRANSITION_READY] = "READY",
-	[DEV_ST_TRANSITION_SBL] = "SBL",
-	[DEV_ST_TRANSITION_MISSION_MODE] = "MISSION MODE",
-	[DEV_ST_TRANSITION_FP] = "FLASH PROGRAMMER",
-	[DEV_ST_TRANSITION_SYS_ERR] = "SYS ERROR",
-	[DEV_ST_TRANSITION_DISABLE] = "DISABLE",
+	DEV_ST_TRANSITION_LIST
 };
 
+#undef ch_state_type
+#undef ch_state_type_end
+
+#define ch_state_type(a, b)	[MHI_CH_STATE_TYPE_##a] = b,
+#define ch_state_type_end(a, b)	[MHI_CH_STATE_TYPE_##a] = b,
+
 const char * const mhi_ch_state_type_str[MHI_CH_STATE_TYPE_MAX] = {
-	[MHI_CH_STATE_TYPE_RESET] = "RESET",
-	[MHI_CH_STATE_TYPE_STOP] = "STOP",
-	[MHI_CH_STATE_TYPE_START] = "START",
+	MHI_CH_STATE_TYPE_LIST
 };
 
+#undef mhi_pm_state
+#undef mhi_pm_state_end
+
+#define mhi_pm_state(a, b)	[MHI_PM_STATE_##a] = b,
+#define mhi_pm_state_end(a, b)	[MHI_PM_STATE_##a] = b,
+
 static const char * const mhi_pm_state_str[] = {
-	[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_LD_ERR_FATAL_DETECT] = "Linkdown or Error Fatal Detect",
+	MHI_PM_STATE_LIST
 };
 
 const char *to_mhi_pm_state_str(u32 state)
@@ -98,11 +96,19 @@ static ssize_t oem_pk_hash_show(struct device *dev,
 {
 	struct mhi_device *mhi_dev = to_mhi_device(dev);
 	struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;
-	int i, cnt = 0;
+	u32 hash_segment[MHI_MAX_OEM_PK_HASH_SEGMENTS];
+	int i, cnt = 0, ret;
 
-	for (i = 0; i < ARRAY_SIZE(mhi_cntrl->oem_pk_hash); i++)
-		cnt += sysfs_emit_at(buf, cnt, "OEMPKHASH[%d]: 0x%x\n",
-				i, mhi_cntrl->oem_pk_hash[i]);
+	for (i = 0; i < MHI_MAX_OEM_PK_HASH_SEGMENTS; i++) {
+		ret = mhi_read_reg(mhi_cntrl, mhi_cntrl->bhi, BHI_OEMPKHASH(i), &hash_segment[i]);
+		if (ret) {
+			dev_err(dev, "Could not capture OEM PK HASH\n");
+			return ret;
+		}
+	}
+
+	for (i = 0; i < MHI_MAX_OEM_PK_HASH_SEGMENTS; i++)
+		cnt += sysfs_emit_at(buf, cnt, "OEMPKHASH[%d]: 0x%x\n", i, hash_segment[i]);
 
 	return cnt;
 }
@@ -908,7 +914,6 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl,
 	struct mhi_chan *mhi_chan;
 	struct mhi_cmd *mhi_cmd;
 	struct mhi_device *mhi_dev;
-	u32 soc_info;
 	int ret, i;
 
 	if (!mhi_cntrl || !mhi_cntrl->cntrl_dev || !mhi_cntrl->regs ||
@@ -983,17 +988,6 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl,
 		mhi_cntrl->unmap_single = mhi_unmap_single_no_bb;
 	}
 
-	/* Read the MHI device info */
-	ret = mhi_read_reg(mhi_cntrl, mhi_cntrl->regs,
-			   SOC_HW_VERSION_OFFS, &soc_info);
-	if (ret)
-		goto err_destroy_wq;
-
-	mhi_cntrl->family_number = FIELD_GET(SOC_HW_VERSION_FAM_NUM_BMSK, soc_info);
-	mhi_cntrl->device_number = FIELD_GET(SOC_HW_VERSION_DEV_NUM_BMSK, soc_info);
-	mhi_cntrl->major_version = FIELD_GET(SOC_HW_VERSION_MAJOR_VER_BMSK, soc_info);
-	mhi_cntrl->minor_version = FIELD_GET(SOC_HW_VERSION_MINOR_VER_BMSK, soc_info);
-
 	mhi_cntrl->index = ida_alloc(&mhi_controller_ida, GFP_KERNEL);
 	if (mhi_cntrl->index < 0) {
 		ret = mhi_cntrl->index;
diff --git a/drivers/bus/mhi/host/internal.h b/drivers/bus/mhi/host/internal.h
index 4b6deea17b..5fe49311b8 100644
--- a/drivers/bus/mhi/host/internal.h
+++ b/drivers/bus/mhi/host/internal.h
@@ -15,12 +15,6 @@ extern struct bus_type mhi_bus_type;
 #define MHI_SOC_RESET_REQ_OFFSET			0xb0
 #define MHI_SOC_RESET_REQ				BIT(0)
 
-#define SOC_HW_VERSION_OFFS				0x224
-#define SOC_HW_VERSION_FAM_NUM_BMSK			GENMASK(31, 28)
-#define SOC_HW_VERSION_DEV_NUM_BMSK			GENMASK(27, 16)
-#define SOC_HW_VERSION_MAJOR_VER_BMSK			GENMASK(15, 8)
-#define SOC_HW_VERSION_MINOR_VER_BMSK			GENMASK(7, 0)
-
 struct mhi_ctxt {
 	struct mhi_event_ctxt *er_ctxt;
 	struct mhi_chan_ctxt *chan_ctxt;
@@ -42,6 +36,11 @@ 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 +49,18 @@ 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 +83,15 @@ 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 +114,21 @@ 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)
diff --git a/drivers/bus/mhi/host/main.c b/drivers/bus/mhi/host/main.c
index abb561db9a..15d657af9b 100644
--- a/drivers/bus/mhi/host/main.c
+++ b/drivers/bus/mhi/host/main.c
@@ -15,6 +15,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include "internal.h"
+#include "trace.h"
 
 int __must_check mhi_read_reg(struct mhi_controller *mhi_cntrl,
 			      void __iomem *base, u32 offset, u32 *out)
@@ -493,11 +494,8 @@ irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *priv)
 
 	state = mhi_get_mhi_state(mhi_cntrl);
 	ee = mhi_get_exec_env(mhi_cntrl);
-	dev_dbg(dev, "local ee: %s state: %s device ee: %s state: %s\n",
-		TO_MHI_EXEC_STR(mhi_cntrl->ee),
-		mhi_state_str(mhi_cntrl->dev_state),
-		TO_MHI_EXEC_STR(ee), mhi_state_str(state));
 
+	trace_mhi_intvec_states(mhi_cntrl, ee, state);
 	if (state == MHI_STATE_SYS_ERR) {
 		dev_dbg(dev, "System error detected\n");
 		pm_state = mhi_tryset_pm_state(mhi_cntrl,
@@ -838,6 +836,8 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller *mhi_cntrl,
 	while (dev_rp != local_rp) {
 		enum mhi_pkt_type type = MHI_TRE_GET_EV_TYPE(local_rp);
 
+		trace_mhi_ctrl_event(mhi_cntrl, local_rp);
+
 		switch (type) {
 		case MHI_PKT_TYPE_BW_REQ_EVENT:
 		{
@@ -1003,6 +1003,8 @@ int mhi_process_data_event_ring(struct mhi_controller *mhi_cntrl,
 	while (dev_rp != local_rp && event_quota > 0) {
 		enum mhi_pkt_type type = MHI_TRE_GET_EV_TYPE(local_rp);
 
+		trace_mhi_data_event(mhi_cntrl, local_rp);
+
 		chan = MHI_TRE_GET_EV_CHID(local_rp);
 
 		WARN_ON(chan >= mhi_cntrl->max_chan);
@@ -1243,6 +1245,7 @@ int mhi_gen_tre(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan,
 	mhi_tre->dword[0] = MHI_TRE_DATA_DWORD0(info->len);
 	mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(bei, eot, eob, chain);
 
+	trace_mhi_gen_tre(mhi_cntrl, mhi_chan, mhi_tre);
 	/* increment WP */
 	mhi_add_ring_element(mhi_cntrl, tre_ring);
 	mhi_add_ring_element(mhi_cntrl, buf_ring);
@@ -1337,9 +1340,7 @@ static int mhi_update_channel_state(struct mhi_controller *mhi_cntrl,
 	enum mhi_cmd_type cmd = MHI_CMD_NOP;
 	int ret;
 
-	dev_dbg(dev, "%d: Updating channel state to: %s\n", mhi_chan->chan,
-		TO_CH_STATE_TYPE_STR(to_state));
-
+	trace_mhi_channel_command_start(mhi_cntrl, mhi_chan, to_state, TPS("Updating"));
 	switch (to_state) {
 	case MHI_CH_STATE_TYPE_RESET:
 		write_lock_irq(&mhi_chan->lock);
@@ -1406,9 +1407,7 @@ static int mhi_update_channel_state(struct mhi_controller *mhi_cntrl,
 		write_unlock_irq(&mhi_chan->lock);
 	}
 
-	dev_dbg(dev, "%d: Channel state change to %s successful\n",
-		mhi_chan->chan, TO_CH_STATE_TYPE_STR(to_state));
-
+	trace_mhi_channel_command_end(mhi_cntrl, mhi_chan, to_state, TPS("Updated"));
 exit_channel_update:
 	mhi_cntrl->runtime_put(mhi_cntrl);
 	mhi_device_put(mhi_cntrl->mhi_dev);
diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index cd6cd14b3d..51639bfcfe 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -538,7 +538,7 @@ static struct mhi_event_config mhi_telit_fn980_hw_v1_events[] = {
 	MHI_EVENT_CONFIG_HW_DATA(2, 2048, 101)
 };
 
-static struct mhi_controller_config modem_telit_fn980_hw_v1_config = {
+static const struct mhi_controller_config modem_telit_fn980_hw_v1_config = {
 	.max_channels = 128,
 	.timeout_ms = 20000,
 	.num_channels = ARRAY_SIZE(mhi_telit_fn980_hw_v1_channels),
diff --git a/drivers/bus/mhi/host/pm.c b/drivers/bus/mhi/host/pm.c
index d0d033ce99..8b40d3f01a 100644
--- a/drivers/bus/mhi/host/pm.c
+++ b/drivers/bus/mhi/host/pm.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/wait.h>
 #include "internal.h"
+#include "trace.h"
 
 /*
  * Not all MHI state transitions are synchronous. Transitions like Linkdown,
@@ -131,6 +132,7 @@ enum mhi_pm_state __must_check mhi_tryset_pm_state(struct mhi_controller *mhi_cn
 	if (unlikely(!(dev_state_transitions[index].to_states & state)))
 		return cur_state;
 
+	trace_mhi_tryset_pm_state(mhi_cntrl, state);
 	mhi_cntrl->pm_state = state;
 	return mhi_cntrl->pm_state;
 }
@@ -772,7 +774,6 @@ void mhi_pm_st_worker(struct work_struct *work)
 	struct mhi_controller *mhi_cntrl = container_of(work,
 							struct mhi_controller,
 							st_worker);
-	struct device *dev = &mhi_cntrl->mhi_dev->dev;
 
 	spin_lock_irq(&mhi_cntrl->transition_lock);
 	list_splice_tail_init(&mhi_cntrl->transition_list, &head);
@@ -780,8 +781,8 @@ void mhi_pm_st_worker(struct work_struct *work)
 
 	list_for_each_entry_safe(itr, tmp, &head, node) {
 		list_del(&itr->node);
-		dev_dbg(dev, "Handling state transition: %s\n",
-			TO_DEV_STATE_TRANS_STR(itr->state));
+
+		trace_mhi_pm_st_transition(mhi_cntrl, itr->state);
 
 		switch (itr->state) {
 		case DEV_ST_TRANSITION_PBL:
diff --git a/drivers/bus/mhi/host/trace.h b/drivers/bus/mhi/host/trace.h
new file mode 100644
index 0000000000..368515dcb2
--- /dev/null
+++ b/drivers/bus/mhi/host/trace.h
@@ -0,0 +1,282 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM mhi_host
+
+#if !defined(_TRACE_EVENT_MHI_HOST_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_EVENT_MHI_HOST_H
+
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+#include "../common.h"
+#include "internal.h"
+
+#undef mhi_state
+#undef mhi_state_end
+
+#define mhi_state(a, b)		TRACE_DEFINE_ENUM(MHI_STATE_##a);
+#define mhi_state_end(a, b)	TRACE_DEFINE_ENUM(MHI_STATE_##a);
+
+MHI_STATE_LIST
+
+#undef mhi_state
+#undef mhi_state_end
+
+#define mhi_state(a, b)		{ MHI_STATE_##a, b },
+#define mhi_state_end(a, b)	{ MHI_STATE_##a, b }
+
+#undef mhi_pm_state
+#undef mhi_pm_state_end
+
+#define mhi_pm_state(a, b)		TRACE_DEFINE_ENUM(MHI_PM_STATE_##a);
+#define mhi_pm_state_end(a, b)		TRACE_DEFINE_ENUM(MHI_PM_STATE_##a);
+
+MHI_PM_STATE_LIST
+
+#undef mhi_pm_state
+#undef mhi_pm_state_end
+
+#define mhi_pm_state(a, b)		{ MHI_PM_STATE_##a, b },
+#define mhi_pm_state_end(a, b)		{ MHI_PM_STATE_##a, b }
+
+#undef mhi_ee
+#undef mhi_ee_end
+
+#define mhi_ee(a, b)			TRACE_DEFINE_ENUM(MHI_EE_##a);
+#define mhi_ee_end(a, b)		TRACE_DEFINE_ENUM(MHI_EE_##a);
+
+MHI_EE_LIST
+
+#undef mhi_ee
+#undef mhi_ee_end
+
+#define mhi_ee(a, b)			{ MHI_EE_##a, b },
+#define mhi_ee_end(a, b)		{ MHI_EE_##a, b }
+
+#undef ch_state_type
+#undef ch_state_type_end
+
+#define ch_state_type(a, b)		TRACE_DEFINE_ENUM(MHI_CH_STATE_TYPE_##a);
+#define ch_state_type_end(a, b)		TRACE_DEFINE_ENUM(MHI_CH_STATE_TYPE_##a);
+
+MHI_CH_STATE_TYPE_LIST
+
+#undef ch_state_type
+#undef ch_state_type_end
+
+#define ch_state_type(a, b)		{ MHI_CH_STATE_TYPE_##a, b },
+#define ch_state_type_end(a, b)		{ MHI_CH_STATE_TYPE_##a, b }
+
+#undef dev_st_trans
+#undef dev_st_trans_end
+
+#define dev_st_trans(a, b)		TRACE_DEFINE_ENUM(DEV_ST_TRANSITION_##a);
+#define dev_st_trans_end(a, b)		TRACE_DEFINE_ENUM(DEV_ST_TRANSITION_##a);
+
+DEV_ST_TRANSITION_LIST
+
+#undef dev_st_trans
+#undef dev_st_trans_end
+
+#define dev_st_trans(a, b)		{ DEV_ST_TRANSITION_##a, b },
+#define dev_st_trans_end(a, b)		{ DEV_ST_TRANSITION_##a, b }
+
+#define TPS(x)	tracepoint_string(x)
+
+TRACE_EVENT(mhi_gen_tre,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan,
+		 struct mhi_ring_element *mhi_tre),
+
+	TP_ARGS(mhi_cntrl, mhi_chan, mhi_tre),
+
+	TP_STRUCT__entry(
+		__string(name, mhi_cntrl->mhi_dev->name)
+		__field(int, ch_num)
+		__field(void *, wp)
+		__field(__le64, tre_ptr)
+		__field(__le32, dword0)
+		__field(__le32, dword1)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, mhi_cntrl->mhi_dev->name);
+		__entry->ch_num = mhi_chan->chan;
+		__entry->wp = mhi_tre;
+		__entry->tre_ptr = mhi_tre->ptr;
+		__entry->dword0 = mhi_tre->dword[0];
+		__entry->dword1 = mhi_tre->dword[1];
+	),
+
+	TP_printk("%s: Chan: %d TRE: 0x%p TRE buf: 0x%llx DWORD0: 0x%08x DWORD1: 0x%08x\n",
+		  __get_str(name), __entry->ch_num, __entry->wp, __entry->tre_ptr,
+		  __entry->dword0, __entry->dword1)
+);
+
+TRACE_EVENT(mhi_intvec_states,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, int dev_ee, int dev_state),
+
+	TP_ARGS(mhi_cntrl, dev_ee, dev_state),
+
+	TP_STRUCT__entry(
+		__string(name, mhi_cntrl->mhi_dev->name)
+		__field(int, local_ee)
+		__field(int, state)
+		__field(int, dev_ee)
+		__field(int, dev_state)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, mhi_cntrl->mhi_dev->name);
+		__entry->local_ee = mhi_cntrl->ee;
+		__entry->state = mhi_cntrl->dev_state;
+		__entry->dev_ee = dev_ee;
+		__entry->dev_state = dev_state;
+	),
+
+	TP_printk("%s: Local EE: %s State: %s Device EE: %s Dev State: %s\n",
+		  __get_str(name),
+		  __print_symbolic(__entry->local_ee, MHI_EE_LIST),
+		  __print_symbolic(__entry->state, MHI_STATE_LIST),
+		  __print_symbolic(__entry->dev_ee, MHI_EE_LIST),
+		  __print_symbolic(__entry->dev_state, MHI_STATE_LIST))
+);
+
+TRACE_EVENT(mhi_tryset_pm_state,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, int pm_state),
+
+	TP_ARGS(mhi_cntrl, pm_state),
+
+	TP_STRUCT__entry(
+		__string(name, mhi_cntrl->mhi_dev->name)
+		__field(int, pm_state)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, mhi_cntrl->mhi_dev->name);
+		if (pm_state)
+			pm_state = __fls(pm_state);
+		__entry->pm_state = pm_state;
+	),
+
+	TP_printk("%s: PM state: %s\n", __get_str(name),
+		  __print_symbolic(__entry->pm_state, MHI_PM_STATE_LIST))
+);
+
+DECLARE_EVENT_CLASS(mhi_process_event_ring,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_ring_element *rp),
+
+	TP_ARGS(mhi_cntrl, rp),
+
+	TP_STRUCT__entry(
+		__string(name, mhi_cntrl->mhi_dev->name)
+		__field(__le32, dword0)
+		__field(__le32, dword1)
+		__field(int, state)
+		__field(__le64, ptr)
+		__field(void *, rp)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, mhi_cntrl->mhi_dev->name);
+		__entry->rp = rp;
+		__entry->ptr = rp->ptr;
+		__entry->dword0 = rp->dword[0];
+		__entry->dword1 = rp->dword[1];
+		__entry->state = MHI_TRE_GET_EV_STATE(rp);
+	),
+
+	TP_printk("%s: TRE: 0x%p TRE buf: 0x%llx DWORD0: 0x%08x DWORD1: 0x%08x State: %s\n",
+		  __get_str(name), __entry->rp, __entry->ptr, __entry->dword0,
+		  __entry->dword1, __print_symbolic(__entry->state, MHI_STATE_LIST))
+);
+
+DEFINE_EVENT(mhi_process_event_ring, mhi_data_event,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_ring_element *rp),
+
+	TP_ARGS(mhi_cntrl, rp)
+);
+
+DEFINE_EVENT(mhi_process_event_ring, mhi_ctrl_event,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_ring_element *rp),
+
+	TP_ARGS(mhi_cntrl, rp)
+);
+
+DECLARE_EVENT_CLASS(mhi_update_channel_state,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan, int state,
+		 const char *reason),
+
+	TP_ARGS(mhi_cntrl, mhi_chan, state, reason),
+
+	TP_STRUCT__entry(
+		__string(name, mhi_cntrl->mhi_dev->name)
+		__field(int, ch_num)
+		__field(int, state)
+		__field(const char *, reason)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, mhi_cntrl->mhi_dev->name);
+		__entry->ch_num = mhi_chan->chan;
+		__entry->state = state;
+		__entry->reason = reason;
+	),
+
+	TP_printk("%s: chan%d: %s state to: %s\n",
+		  __get_str(name),  __entry->ch_num, __entry->reason,
+		  __print_symbolic(__entry->state, MHI_CH_STATE_TYPE_LIST))
+);
+
+DEFINE_EVENT(mhi_update_channel_state, mhi_channel_command_start,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan, int state,
+		 const char *reason),
+
+	TP_ARGS(mhi_cntrl, mhi_chan, state, reason)
+);
+
+DEFINE_EVENT(mhi_update_channel_state, mhi_channel_command_end,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan, int state,
+		 const char *reason),
+
+	TP_ARGS(mhi_cntrl, mhi_chan, state, reason)
+);
+
+TRACE_EVENT(mhi_pm_st_transition,
+
+	TP_PROTO(struct mhi_controller *mhi_cntrl, int state),
+
+	TP_ARGS(mhi_cntrl, state),
+
+	TP_STRUCT__entry(
+		__string(name, mhi_cntrl->mhi_dev->name)
+		__field(int, state)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, mhi_cntrl->mhi_dev->name);
+		__entry->state = state;
+	),
+
+	TP_printk("%s: Handling state transition: %s\n", __get_str(name),
+		  __print_symbolic(__entry->state, DEV_ST_TRANSITION_LIST))
+);
+
+#endif
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../../drivers/bus/mhi/host
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+#include <trace/define_trace.h>
diff --git a/drivers/bus/mips_cdmm.c b/drivers/bus/mips_cdmm.c
index 554e1992ed..8baf14bd5e 100644
--- a/drivers/bus/mips_cdmm.c
+++ b/drivers/bus/mips_cdmm.c
@@ -118,7 +118,7 @@ static struct attribute *mips_cdmm_dev_attrs[] = {
 };
 ATTRIBUTE_GROUPS(mips_cdmm_dev);
 
-struct bus_type mips_cdmm_bustype = {
+const struct bus_type mips_cdmm_bustype = {
 	.name		= "cdmm",
 	.dev_groups	= mips_cdmm_dev_groups,
 	.match		= mips_cdmm_match,
diff --git a/drivers/bus/sunxi-rsb.c b/drivers/bus/sunxi-rsb.c
index fd3e9d8234..1e29ba7661 100644
--- a/drivers/bus/sunxi-rsb.c
+++ b/drivers/bus/sunxi-rsb.c
@@ -128,7 +128,7 @@ struct sunxi_rsb {
 };
 
 /* bus / slave device related functions */
-static struct bus_type sunxi_rsb_bus;
+static const struct bus_type sunxi_rsb_bus;
 
 static int sunxi_rsb_device_match(struct device *dev, struct device_driver *drv)
 {
@@ -177,7 +177,7 @@ static int sunxi_rsb_device_modalias(const struct device *dev, struct kobj_ueven
 	return of_device_uevent_modalias(dev, env);
 }
 
-static struct bus_type sunxi_rsb_bus = {
+static const struct bus_type sunxi_rsb_bus = {
 	.name		= RSB_CTRL_NAME,
 	.match		= sunxi_rsb_device_match,
 	.probe		= sunxi_rsb_device_probe,
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 245e5e827d..41d33f39ef 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -2400,7 +2400,7 @@ static int sysc_child_add_clocks(struct sysc *ddata,
 	return 0;
 }
 
-static struct device_type sysc_device_type = {
+static const struct device_type sysc_device_type = {
 };
 
 static struct sysc *sysc_child_to_parent(struct device *dev)
diff --git a/drivers/bus/ts-nbus.c b/drivers/bus/ts-nbus.c
index 4fa932cb09..baf22a82c4 100644
--- a/drivers/bus/ts-nbus.c
+++ b/drivers/bus/ts-nbus.c
@@ -39,45 +39,39 @@ struct ts_nbus {
 /*
  * request all gpios required by the bus.
  */
-static int ts_nbus_init_pdata(struct platform_device *pdev, struct ts_nbus
-		*ts_nbus)
+static int ts_nbus_init_pdata(struct platform_device *pdev,
+			      struct ts_nbus *ts_nbus)
 {
 	ts_nbus->data = devm_gpiod_get_array(&pdev->dev, "ts,data",
 			GPIOD_OUT_HIGH);
-	if (IS_ERR(ts_nbus->data)) {
-		dev_err(&pdev->dev, "failed to retrieve ts,data-gpio from dts\n");
-		return PTR_ERR(ts_nbus->data);
-	}
+	if (IS_ERR(ts_nbus->data))
+		return dev_err_probe(&pdev->dev, PTR_ERR(ts_nbus->data),
+				     "failed to retrieve ts,data-gpio from dts\n");
 
 	ts_nbus->csn = devm_gpiod_get(&pdev->dev, "ts,csn", GPIOD_OUT_HIGH);
-	if (IS_ERR(ts_nbus->csn)) {
-		dev_err(&pdev->dev, "failed to retrieve ts,csn-gpio from dts\n");
-		return PTR_ERR(ts_nbus->csn);
-	}
+	if (IS_ERR(ts_nbus->csn))
+		return dev_err_probe(&pdev->dev, PTR_ERR(ts_nbus->csn),
+			      "failed to retrieve ts,csn-gpio from dts\n");
 
 	ts_nbus->txrx = devm_gpiod_get(&pdev->dev, "ts,txrx", GPIOD_OUT_HIGH);
-	if (IS_ERR(ts_nbus->txrx)) {
-		dev_err(&pdev->dev, "failed to retrieve ts,txrx-gpio from dts\n");
-		return PTR_ERR(ts_nbus->txrx);
-	}
+	if (IS_ERR(ts_nbus->txrx))
+		return dev_err_probe(&pdev->dev, PTR_ERR(ts_nbus->txrx),
+				     "failed to retrieve ts,txrx-gpio from dts\n");
 
 	ts_nbus->strobe = devm_gpiod_get(&pdev->dev, "ts,strobe", GPIOD_OUT_HIGH);
-	if (IS_ERR(ts_nbus->strobe)) {
-		dev_err(&pdev->dev, "failed to retrieve ts,strobe-gpio from dts\n");
-		return PTR_ERR(ts_nbus->strobe);
-	}
+	if (IS_ERR(ts_nbus->strobe))
+		return dev_err_probe(&pdev->dev, PTR_ERR(ts_nbus->strobe),
+				     "failed to retrieve ts,strobe-gpio from dts\n");
 
 	ts_nbus->ale = devm_gpiod_get(&pdev->dev, "ts,ale", GPIOD_OUT_HIGH);
-	if (IS_ERR(ts_nbus->ale)) {
-		dev_err(&pdev->dev, "failed to retrieve ts,ale-gpio from dts\n");
-		return PTR_ERR(ts_nbus->ale);
-	}
+	if (IS_ERR(ts_nbus->ale))
+		return dev_err_probe(&pdev->dev, PTR_ERR(ts_nbus->ale),
+				     "failed to retrieve ts,ale-gpio from dts\n");
 
 	ts_nbus->rdy = devm_gpiod_get(&pdev->dev, "ts,rdy", GPIOD_IN);
-	if (IS_ERR(ts_nbus->rdy)) {
-		dev_err(&pdev->dev, "failed to retrieve ts,rdy-gpio from dts\n");
-		return PTR_ERR(ts_nbus->rdy);
-	}
+	if (IS_ERR(ts_nbus->rdy))
+		return dev_err_probe(&pdev->dev, PTR_ERR(ts_nbus->rdy),
+				     "failed to retrieve ts,rdy-gpio from dts\n");
 
 	return 0;
 }
@@ -273,7 +267,7 @@ EXPORT_SYMBOL_GPL(ts_nbus_write);
 static int ts_nbus_probe(struct platform_device *pdev)
 {
 	struct pwm_device *pwm;
-	struct pwm_args pargs;
+	struct pwm_state state;
 	struct device *dev = &pdev->dev;
 	struct ts_nbus *ts_nbus;
 	int ret;
@@ -289,32 +283,24 @@ static int ts_nbus_probe(struct platform_device *pdev)
 		return ret;
 
 	pwm = devm_pwm_get(dev, NULL);
-	if (IS_ERR(pwm)) {
-		ret = PTR_ERR(pwm);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "unable to request PWM\n");
-		return ret;
-	}
+	if (IS_ERR(pwm))
+		return dev_err_probe(dev, PTR_ERR(pwm),
+				     "unable to request PWM\n");
 
-	pwm_get_args(pwm, &pargs);
-	if (!pargs.period) {
-		dev_err(&pdev->dev, "invalid PWM period\n");
-		return -EINVAL;
-	}
+	pwm_init_state(pwm, &state);
+	if (!state.period)
+		return dev_err_probe(dev, -EINVAL, "invalid PWM period\n");
 
-	/*
-	 * FIXME: pwm_apply_args() should be removed when switching to
-	 * the atomic PWM API.
-	 */
-	pwm_apply_args(pwm);
-	ret = pwm_config(pwm, pargs.period, pargs.period);
+	state.duty_cycle = state.period;
+	state.enabled = true;
+
+	ret = pwm_apply_state(pwm, &state);
 	if (ret < 0)
-		return ret;
+		return dev_err_probe(dev, ret, "failed to configure PWM\n");
 
 	/*
 	 * we can now start the FPGA and populate the peripherals.
 	 */
-	pwm_enable(pwm);
 	ts_nbus->pwm = pwm;
 
 	/*
@@ -324,7 +310,8 @@ static int ts_nbus_probe(struct platform_device *pdev)
 
 	ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
 	if (ret < 0)
-		return ret;
+		return dev_err_probe(dev, ret,
+				     "failed to populate platform devices on bus\n");
 
 	dev_info(dev, "initialized\n");