linux-kernel - [PATCH v7 14/14] USB: typec: tps6598x: Add status trace for tps25750

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Message-Id: <20230927175348.18041-15-alkuor@gmail.com>
Date:   Wed, 27 Sep 2023 13:53:48 -0400
From:   Abdel Alkuor <alkuor@...il.com>
To:     heikki.krogerus@...ux.intel.com, krzysztof.kozlowski+dt@...aro.org,
        bryan.odonoghue@...aro.org
Cc:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, ryan.eleceng@...il.com,
        robh+dt@...nel.org, conor+dt@...nel.org,
        devicetree@...r.kernel.org, Abdel Alkuor <abdelalkuor@...tab.com>
Subject: [PATCH v7 14/14] USB: typec: tps6598x: Add status trace for tps25750

From: Abdel Alkuor <abdelalkuor@...tab.com>

tps25750 status register is a subset of tps6598x status register, hence
a trace for tps25750 status register is added.

Signed-off-by: Abdel Alkuor <abdelalkuor@...tab.com>
---
Changes in v7:
  - Add driver name to commit subject
Changes in v6:
 - Add trace status to tipd data factory
Changes in v5:
  - Incorporating tps25750 into tps6598x driver

 drivers/usb/typec/tipd/core.c  | 12 +++++++----
 drivers/usb/typec/tipd/trace.h | 37 ++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index c9c30de6e77a..59a4ba797a2c 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -109,6 +109,7 @@ struct tipd_data {
 	irq_handler_t irq_handler;
 	int (*register_port)(struct tps6598x *tps, struct fwnode_handle *node);
 	void (*trace_power_status)(u16 status);
+	void (*trace_status)(u32 status);
 };
 
 struct tps6598x {
@@ -468,7 +469,9 @@ static bool tps6598x_read_status(struct tps6598x *tps, u32 *status)
 		dev_err(tps->dev, "%s: failed to read status\n", __func__);
 		return false;
 	}
-	trace_tps6598x_status(*status);
+
+	if (tps->cb.trace_status)
+		tps->cb.trace_status(*status);
 
 	return true;
 }
@@ -1173,18 +1176,21 @@ static const struct tipd_data cd321x_data = {
 	.irq_handler = cd321x_interrupt,
 	.register_port = tps6598x_register_port,
 	.trace_power_status = trace_tps6598x_power_status,
+	.trace_status = trace_tps6598x_status,
 };
 
 static const struct tipd_data tps6598x_data = {
 	.irq_handler = tps6598x_interrupt,
 	.register_port = tps6598x_register_port,
 	.trace_power_status = trace_tps6598x_power_status,
+	.trace_status = trace_tps6598x_status,
 };
 
 static const struct tipd_data tps25750_data = {
 	.irq_handler = tps25750_interrupt,
 	.register_port = tps25750_register_port,
 	.trace_power_status = trace_tps25750_power_status,
+	.trace_status = trace_tps25750_status,
 };
 
 static int tps6598x_probe(struct i2c_client *client)
@@ -1261,10 +1267,8 @@ static int tps6598x_probe(struct i2c_client *client)
 	if (ret)
 		goto err_reset_controller;
 
-	ret = tps6598x_read32(tps, TPS_REG_STATUS, &status);
-	if (ret < 0)
+	if (!tps6598x_read_status(tps, &status))
 		goto err_clear_mask;
-	trace_tps6598x_status(status);
 
 	/*
 	 * This fwnode has a "compatible" property, but is never populated as a
diff --git a/drivers/usb/typec/tipd/trace.h b/drivers/usb/typec/tipd/trace.h
index 739b0a2a867d..0669cca12ea1 100644
--- a/drivers/usb/typec/tipd/trace.h
+++ b/drivers/usb/typec/tipd/trace.h
@@ -91,6 +91,14 @@
 						      TPS_STATUS_USB_HOST_PRESENT_MASK | \
 						      TPS_STATUS_LEGACY_MASK))
 
+#define TPS25750_STATUS_FLAGS_MASK (GENMASK(31, 0) ^ (TPS_STATUS_CONN_STATE_MASK | \
+						      GENMASK(19, 7) | \
+						      TPS_STATUS_VBUS_STATUS_MASK | \
+						      TPS_STATUS_USB_HOST_PRESENT_MASK | \
+						      TPS_STATUS_LEGACY_MASK | \
+						      BIT(26) | \
+						      GENMASK(31, 28)))
+
 #define show_status_conn_state(status) \
 	__print_symbolic(TPS_STATUS_CONN_STATE((status)), \
 		{ TPS_STATUS_CONN_STATE_CONN_WITH_R_A,	"conn-Ra"  }, \
@@ -148,6 +156,14 @@
 		      { TPS_STATUS_HIGH_VOLAGE_WARNING,	"HIGH_VOLAGE_WARNING" }, \
 		      { TPS_STATUS_HIGH_LOW_VOLTAGE_WARNING, "HIGH_LOW_VOLTAGE_WARNING" })
 
+#define show_tps25750_status_flags(flags) \
+	__print_flags((flags & TPS25750_STATUS_FLAGS_MASK), "|", \
+		      { TPS_STATUS_PLUG_PRESENT,	"PLUG_PRESENT" }, \
+		      { TPS_STATUS_PLUG_UPSIDE_DOWN,	"UPSIDE_DOWN" }, \
+		      { TPS_STATUS_PORTROLE,		"PORTROLE" }, \
+		      { TPS_STATUS_DATAROLE,		"DATAROLE" }, \
+		      { TPS_STATUS_BIST,		"BIST" })
+
 #define show_power_status_source_sink(power_status) \
 	__print_symbolic(TPS_POWER_STATUS_SOURCESINK(power_status), \
 		{ 1, "sink" }, \
@@ -292,6 +308,27 @@ TRACE_EVENT(tps6598x_status,
 		    )
 );
 
+TRACE_EVENT(tps25750_status,
+	    TP_PROTO(u32 status),
+	    TP_ARGS(status),
+
+	    TP_STRUCT__entry(
+			     __field(u32, status)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->status = status;
+			   ),
+
+	    TP_printk("conn: %s, vbus: %s, usb-host: %s, legacy: %s, flags: %s",
+		      show_status_conn_state(__entry->status),
+		      show_status_vbus_status(__entry->status),
+		      show_status_usb_host_present(__entry->status),
+		      show_status_legacy(__entry->status),
+		      show_tps25750_status_flags(__entry->status)
+		    )
+);
+
 TRACE_EVENT(tps6598x_power_status,
 	    TP_PROTO(u16 power_status),
 	    TP_ARGS(power_status),
-- 
2.34.1