From patchwork Mon Oct 23 21:47:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 737505 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CFE0224D9 for ; Mon, 23 Oct 2023 21:53:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="DS5/I/t/" Received: from mail-lf1-x130.google.com (mail-lf1-x130.google.com [IPv6:2a00:1450:4864:20::130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B313CFD for ; Mon, 23 Oct 2023 14:53:31 -0700 (PDT) Received: by mail-lf1-x130.google.com with SMTP id 2adb3069b0e04-507bd644a96so5609970e87.3 for ; Mon, 23 Oct 2023 14:53:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1698098010; x=1698702810; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=X+rsmYD1T4XayxZO0d9Wh3lxs23SfSgBqhqU6v10yXI=; b=DS5/I/t/a1rn3H4PvD8WGA+Ot6k1fJ2kVgyL+MH5affyN5A9UrUaD2etC4KxhCxcmb IeNcXo47DTDb7WunfIukITK1ituOxtTHWyUFuB3BNqmP8VgVRUatIdEgKovyTx005s36 UYVnHmljV+Rc6J25ZLxxYSACDnU7lSB9D4iSOfr/S+J9ZvVZRl9hFABtThciloeawmge dx3BTNmzBvMT7zFPbYbHPiex0dcWy+jgR1SqZjNTAsC+156NLEBdEFgp/pMfI6LZf2bk 5y6YqphoDt7FXKcm8O3j7Np03kbxiDisJtsJyIH+iQ28OjQPaeC509EyAShDFYE9+UGR 3o2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698098010; x=1698702810; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=X+rsmYD1T4XayxZO0d9Wh3lxs23SfSgBqhqU6v10yXI=; b=laRhqJFnzxhRn2/prSn1nvk73IzjDAJcBq72qr3V+JFudPd7EQbMUjbjodGuqmz9AP huwXS4rioiSooh+N3FJp7CL0ljImK5wSxz1EKvW0OgS9+WZBekybqNfIszahyMMUYaaB hHHCTuwgFDYSoGp8R5ptEqIunQr2oA7aX0fksaNfnUKZ/uYgtzVpRVHil7ccMonH+h8T hdNucP3AfHhSYvtvJ4a7MrIyq5mlQnrLxmn3iYlA1G4ghs9/MQ1d7WXbQ+7UZFhIpofm NK/r2XGROUdf+1XPAbwVZIg07wkaH2a6xISFdXb7lN/jbIYd+0pi+s7n6awlphjoAbBA vWsQ== X-Gm-Message-State: AOJu0YyNlMEp+25tsAQeQWGfMEEBB/PY54ekHV69+o3WDzybbTHeghpp sSEE6dXeHtBEc+bs+a4sPhrfjg== X-Google-Smtp-Source: AGHT+IGXavENepsWbia0vw4b+3iZge7gks+4vDHuc1kxU3y//RzCXGuL+EX4pMSlLyMK5HG2fNi84Q== X-Received: by 2002:a19:4f4c:0:b0:4fb:bef0:948e with SMTP id a12-20020a194f4c000000b004fbbef0948emr7134468lfk.5.1698098009741; Mon, 23 Oct 2023 14:53:29 -0700 (PDT) Received: from eriador.lumag.spb.ru (85-76-147-63-nat.elisa-mobile.fi. [85.76.147.63]) by smtp.gmail.com with ESMTPSA id g3-20020a056512118300b005079dac9620sm1845143lfr.43.2023.10.23.14.53.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Oct 2023 14:53:29 -0700 (PDT) From: Dmitry Baryshkov To: Heikki Krogerus , Greg Kroah-Hartman , Andy Gross , Bjorn Andersson , Konrad Dybcio , Neil Armstrong Cc: Rob Herring , linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH 0/2] usb: typec: ucsi: add workaround for several Qualcomm platforms Date: Tue, 24 Oct 2023 00:47:25 +0300 Message-ID: <20231023215327.695720-1-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.42.0 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The UCSI firmware on Qualcomm SC8180X, SC8280XP and SM8350 are buggy. Submitting UCSI_GET_PDOS command for partners which do not actually support PD and do not have PDOs causes firmware to crash, preventing further UCSI activity. Firmware on newer platforms have fixed this issue. In order to still be able to use UCSI functionality on the mentioned platforms (e.g. to be able to handle USB role switching), apply a workaround that completely shortcuts UCSI_GET_PDOS command for the USB-C partner. This has been tested on sm8350 only, but should apply to other two platforms. Dmitry Baryshkov (2): usb: typec: ucsi: fix UCSI on buggy Qualcomm devices soc: qcom: pmic-glink: enable UCSI on older devices drivers/soc/qcom/pmic_glink.c | 7 +++++++ drivers/usb/typec/ucsi/ucsi.c | 3 +++ drivers/usb/typec/ucsi/ucsi.h | 3 +++ drivers/usb/typec/ucsi/ucsi_glink.c | 3 +++ 4 files changed, 16 insertions(+)