From patchwork Fri Feb 12 12:04:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Guido_G=C3=BCnther?= X-Patchwork-Id: 12085117 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UPPERCASE_50_75,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8B97C433DB for ; Fri, 12 Feb 2021 12:06:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D2DE64E05 for ; Fri, 12 Feb 2021 12:06:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230296AbhBLMGB (ORCPT ); Fri, 12 Feb 2021 07:06:01 -0500 Received: from honk.sigxcpu.org ([24.134.29.49]:47074 "EHLO honk.sigxcpu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231167AbhBLMFd (ORCPT ); Fri, 12 Feb 2021 07:05:33 -0500 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id DB3B1FB05; Fri, 12 Feb 2021 13:04:42 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at honk.sigxcpu.org Received: from honk.sigxcpu.org ([127.0.0.1]) by localhost (honk.sigxcpu.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0-yAo9O8Nnju; Fri, 12 Feb 2021 13:04:39 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id C7B634188C; Fri, 12 Feb 2021 13:04:33 +0100 (CET) From: =?utf-8?q?Guido_G=C3=BCnther?= To: Heikki Krogerus , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH v2 4/4] usb: typec: tps6598x: Add trace event for data status Date: Fri, 12 Feb 2021 13:04:33 +0100 Message-Id: X-Mailer: git-send-email 2.30.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This is useful to debug DP negotiation and pin assignment even when the firmware does all the work. Signed-off-by: Guido Günther --- drivers/usb/typec/tps6598x.c | 12 ++++++- drivers/usb/typec/tps6598x.h | 36 ++++++++++++++++++++ drivers/usb/typec/tps6598x_trace.h | 54 ++++++++++++++++++++++++++++++ 3 files changed, 101 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 3e6ad3ba7fc8..a4ec8e56c2b9 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -36,6 +36,7 @@ #define TPS_REG_CTRL_CONF 0x29 #define TPS_REG_POWER_STATUS 0x3f #define TPS_REG_RX_IDENTITY_SOP 0x48 +#define TPS_REG_DATA_STATUS 0x5f /* TPS_REG_SYSTEM_CONF bits */ #define TPS_SYSCONF_PORTINFO(c) ((c) & 7) @@ -408,7 +409,7 @@ static irqreturn_t tps6598x_interrupt(int irq, void *data) struct tps6598x *tps = data; u64 event1; u64 event2; - u32 status; + u32 status, data_status; u16 pwr_status; int ret; @@ -438,6 +439,15 @@ static irqreturn_t tps6598x_interrupt(int irq, void *data) trace_tps6598x_power_status(pwr_status); } + if ((event1 | event2) & TPS_REG_INT_DATA_STATUS_UPDATE) { + ret = tps6598x_read32(tps, TPS_REG_DATA_STATUS, &data_status); + if (ret < 0) { + dev_err(tps->dev, "failed to read data status: %d\n", ret); + goto err_clear_ints; + } + trace_tps6598x_data_status(data_status); + } + /* Handle plug insert or removal */ if ((event1 | event2) & TPS_REG_INT_PLUG_EVENT) { if (status & TPS_STATUS_PLUG_PRESENT) { diff --git a/drivers/usb/typec/tps6598x.h b/drivers/usb/typec/tps6598x.h index 3f6503377678..1afc22ab4dbb 100644 --- a/drivers/usb/typec/tps6598x.h +++ b/drivers/usb/typec/tps6598x.h @@ -146,4 +146,40 @@ #define TPS_POWER_STATUS_BC12_STATUS_CDP 2 #define TPS_POWER_STATUS_BC12_STATUS_DCP 3 +/* TPS_REG_DATA_STATUS bits */ +#define TPS_DATA_STATUS_DATA_CONNECTION BIT(0) +#define TPS_DATA_STATUS_UPSIDE_DOWN BIT(1) +#define TPS_DATA_STATUS_ACTIVE_CABLE BIT(2) +#define TPS_DATA_STATUS_USB2_CONNECTION BIT(4) +#define TPS_DATA_STATUS_USB3_CONNECTION BIT(5) +#define TPS_DATA_STATUS_USB3_GEN2 BIT(6) +#define TPS_DATA_STATUS_USB_DATA_ROLE BIT(7) +#define TPS_DATA_STATUS_DP_CONNECTION BIT(8) +#define TPS_DATA_STATUS_DP_SINK BIT(9) +#define TPS_DATA_STATUS_TBT_CONNECTION BIT(16) +#define TPS_DATA_STATUS_TBT_TYPE BIT(17) +#define TPS_DATA_STATUS_OPTICAL_CABLE BIT(18) +#define TPS_DATA_STATUS_ACTIVE_LINK_TRAIN BIT(20) +#define TPS_DATA_STATUS_FORCE_LSX BIT(23) +#define TPS_DATA_STATUS_POWER_MISMATCH BIT(24) + +#define TPS_DATA_STATUS_DP_PIN_ASSIGNMENT_MASK GENMASK(11, 10) +#define TPS_DATA_STATUS_DP_PIN_ASSIGNMENT(x) \ + FIELD_GET(TPS_DATA_STATUS_DP_PIN_ASSIGNMENT_MASK, (x)) +#define TPS_DATA_STATUS_TBT_CABLE_SPEED_MASK GENMASK(27, 25) +#define TPS_DATA_STATUS_TBT_CABLE_SPEED FIELD_GET(TPS_DATA_STATUS_TBT_CABLE_SPEED_MASK, (x)) +#define TPS_DATA_STATUS_TBT_CABLE_GEN_MASK GENMASK(29, 28) +#define TPS_DATA_STATUS_TBT_CABLE_GEN FIELD_GET(TPS_DATA_STATUS_TBT_CABLE_GEN_MASK, (x)) + +/* Map data status to DP spec assignments */ +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT(x) \ + ((TPS_DATA_STATUS_DP_PIN_ASSIGNMENT(x) << 1) | \ + FIELD_GET(TPS_DATA_STATUS_USB3_CONNECTION, (x))) +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_E 0 +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_F BIT(0) +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_C BIT(1) +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_D (BIT(1) | BIT(0)) +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_A BIT(2) +#define TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_B (BIT(2) | BIT(1)) + #endif /* __TPS6598X_H__ */ diff --git a/drivers/usb/typec/tps6598x_trace.h b/drivers/usb/typec/tps6598x_trace.h index 78a5a6ca337b..38bfb2f04e46 100644 --- a/drivers/usb/typec/tps6598x_trace.h +++ b/drivers/usb/typec/tps6598x_trace.h @@ -152,6 +152,41 @@ { TPS_POWER_STATUS_BC12_STATUS_CDP, "cdp" }, \ { TPS_POWER_STATUS_BC12_STATUS_SDP, "sdp" }) +#define TPS_DATA_STATUS_FLAGS_MASK (GENMASK(31, 0) ^ (TPS_DATA_STATUS_DP_PIN_ASSIGNMENT_MASK | \ + TPS_DATA_STATUS_TBT_CABLE_SPEED_MASK | \ + TPS_DATA_STATUS_TBT_CABLE_GEN_MASK)) + +#define show_data_status_flags(data_status) \ + __print_flags(data_status & TPS_DATA_STATUS_FLAGS_MASK, "|", \ + { TPS_DATA_STATUS_DATA_CONNECTION, "DATA_CONNECTION" }, \ + { TPS_DATA_STATUS_UPSIDE_DOWN, "DATA_UPSIDE_DOWN" }, \ + { TPS_DATA_STATUS_ACTIVE_CABLE, "ACTIVE_CABLE" }, \ + { TPS_DATA_STATUS_USB2_CONNECTION, "USB2_CONNECTION" }, \ + { TPS_DATA_STATUS_USB3_CONNECTION, "USB3_CONNECTION" }, \ + { TPS_DATA_STATUS_USB3_GEN2, "USB3_GEN2" }, \ + { TPS_DATA_STATUS_USB_DATA_ROLE, "USB_DATA_ROLE" }, \ + { TPS_DATA_STATUS_DP_CONNECTION, "DP_CONNECTION" }, \ + { TPS_DATA_STATUS_DP_SINK, "DP_SINK" }, \ + { TPS_DATA_STATUS_TBT_CONNECTION, "TBT_CONNECTION" }, \ + { TPS_DATA_STATUS_TBT_TYPE, "TBT_TYPE" }, \ + { TPS_DATA_STATUS_OPTICAL_CABLE, "OPTICAL_CABLE" }, \ + { TPS_DATA_STATUS_ACTIVE_LINK_TRAIN, "ACTIVE_LINK_TRAIN" }, \ + { TPS_DATA_STATUS_FORCE_LSX, "FORCE_LSX" }, \ + { TPS_DATA_STATUS_POWER_MISMATCH, "POWER_MISMATCH" }) + +#define show_data_status_dp_pin_assignment(data_status) \ + __print_symbolic(TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT(data_status), \ + { TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_E, "E" }, \ + { TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_F, "F" }, \ + { TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_C, "C" }, \ + { TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_D, "D" }, \ + { TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_A, "A" }, \ + { TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_B, "B" }) + +#define maybe_show_data_status_dp_pin_assignment(data_status) \ + (data_status & TPS_DATA_STATUS_DP_CONNECTION ? \ + show_data_status_dp_pin_assignment(data_status) : "") + TRACE_EVENT(tps6598x_irq, TP_PROTO(u64 event1, u64 event2), @@ -219,6 +254,25 @@ TRACE_EVENT(tps6598x_power_status, ) ); +TRACE_EVENT(tps6598x_data_status, + TP_PROTO(u32 data_status), + TP_ARGS(data_status), + + TP_STRUCT__entry( + __field(u32, data_status) + ), + + TP_fast_assign( + __entry->data_status = data_status; + ), + + TP_printk("%s%s%s", + show_data_status_flags(__entry->data_status), + __entry->data_status & TPS_DATA_STATUS_DP_CONNECTION ? ", DP pinout " : "", + maybe_show_data_status_dp_pin_assignment(__entry->data_status) + ) +); + #endif /* _TPS6598X_TRACE_H_ */ /* This part must be outside protection */