Add ACPI fixes plus a DT for qcom sd850 based Yoga C630

1 files changed, 128 insertions, 0 deletions

diff --git a/arm64-qcom-i2c-geni-Disable-DMA-processing-on-the-Lenovo-Yoga-C630.patch b/arm64-qcom-i2c-geni-Disable-DMA-processing-on-the-Lenovo-Yoga-C630.patch
new file mode 100644
index 000000000..a7f7c8f20
--- /dev/null
+++ b/arm64-qcom-i2c-geni-Disable-DMA-processing-on-the-Lenovo-Yoga-C630.patch
@@ -0,0 +1,128 @@
+From patchwork Thu Sep  5 19:24:12 2019
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+X-Patchwork-Submitter: Lee Jones <lee.jones@linaro.org>
+X-Patchwork-Id: 11133827
+Return-Path: <SRS0=OmJI=XA=vger.kernel.org=linux-arm-msm-owner@kernel.org>
+Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org
+ [172.30.200.123])
+	by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DDFD514ED
+	for <patchwork-linux-arm-msm@patchwork.kernel.org>;
+ Thu,  5 Sep 2019 19:24:19 +0000 (UTC)
+Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
+	by mail.kernel.org (Postfix) with ESMTP id D540020870
+	for <patchwork-linux-arm-msm@patchwork.kernel.org>;
+ Thu,  5 Sep 2019 19:24:19 +0000 (UTC)
+Authentication-Results: mail.kernel.org;
+	dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org
+ header.b="j/6kUy9p"
+Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
+        id S1727540AbfIETYS (ORCPT
+        <rfc822;patchwork-linux-arm-msm@patchwork.kernel.org>);
+        Thu, 5 Sep 2019 15:24:18 -0400
+Received: from mail-wr1-f49.google.com ([209.85.221.49]:36821 "EHLO
+        mail-wr1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
+        with ESMTP id S1726008AbfIETYS (ORCPT
+        <rfc822;linux-arm-msm@vger.kernel.org>);
+        Thu, 5 Sep 2019 15:24:18 -0400
+Received: by mail-wr1-f49.google.com with SMTP id y19so4081592wrd.3
+        for <linux-arm-msm@vger.kernel.org>;
+ Thu, 05 Sep 2019 12:24:16 -0700 (PDT)
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
+        d=linaro.org; s=google;
+        h=from:to:cc:subject:date:message-id;
+        bh=19vbMBbLeKgWt8VsEseKuJu+9+rmeS/Lh0ZhXOFWQYc=;
+        b=j/6kUy9psCaV+YLvz8j0kAZ3/WrmOU3xyh5rDOj0TwK0TnwjLtaLil9Q+C9KpFvvVG
+         h4R8p4cZFB0U4b/PAfc9Xt4p4xJNkAIpTzL4QRjM+nkXdDcYyiwUGkr9BRJnJmO0lyZB
+         zmylqwjRd1oOrTQ1tPvwqUV3OUR5u6WA+rDyhn+A516vskkns0bEICMG787HdDEwjigd
+         +3SR4L9u7swSDpNhqxtfPsn9UFP36sehUfgx32xUcjUhX3ls4RtX+6HCZU+rkeQuILt5
+         0qlmqliIuKXWkQe+ii/gtrK+ulFQ7lEl76YfDJyqXVo4Z357rIhVFAz+mooVn5qpscmU
+         E+xA==
+X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
+        d=1e100.net; s=20161025;
+        h=x-gm-message-state:from:to:cc:subject:date:message-id;
+        bh=19vbMBbLeKgWt8VsEseKuJu+9+rmeS/Lh0ZhXOFWQYc=;
+        b=QjFuCunKeBkoabY9fIsWTo3krapsS69k52eNtOIeLBaCd7M1lvCmItn41DcbJ5ykqT
+         RQ0rnlNq35x9QvKNumPai3fMZp9AWt3KpJpxbpEokltyLbkGUqRWaeYTrOtuV9P9nRmT
+         Yj72UBVzYj4d/G+FGq8EBesWjRyEFC51+RekvPlbRZ/h1fVW7/XAy5cO1ywnHrtNe8pQ
+         7gYQJ3Xh1Y09qkiO0i8iru5PSMTK3U+vPSLWVdFOeqMh+Beins6I9mbKf+UX+xa8ECK3
+         mEFjYxY57YVx+SpaKrmBwEmu9YXLgXqEif1OH1FHFiKZVQ4ABPp19D4+5JOXEV1tCwUS
+         B6Qw==
+X-Gm-Message-State: APjAAAUM7yEkrkGZ+mbleFtCMQGsXfLQSXt2Bd+K6leuP2oAs8Vj1j9k
+        4bsoJvF042q/z9+6bnLlGShjoA==
+X-Google-Smtp-Source: 
+ APXvYqyThx0kWliMdrjc7dedZ/+AhabFi7TIc04exnxhWAEkAOh7foRP8Cz8ZjjhxGJCvUyUPA4lFg==
+X-Received: by 2002:adf:ea0c:: with SMTP id q12mr4172788wrm.172.1567711455933;
+        Thu, 05 Sep 2019 12:24:15 -0700 (PDT)
+Received: from localhost.localdomain ([95.147.198.36])
+        by smtp.gmail.com with ESMTPSA id
+ q24sm7942378wmc.3.2019.09.05.12.24.14
+        (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
+        Thu, 05 Sep 2019 12:24:14 -0700 (PDT)
+From: Lee Jones <lee.jones@linaro.org>
+To: alokc@codeaurora.org, agross@kernel.org, robh+dt@kernel.org,
+        mark.rutland@arm.com, bjorn.andersson@linaro.org, vkoul@kernel.org,
+        wsa@the-dreams.de
+Cc: linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org,
+        devicetree@vger.kernel.org, Lee Jones <lee.jones@linaro.org>
+Subject: [RESEND v3 1/1] i2c: qcom-geni: Disable DMA processing on the Lenovo
+ Yoga C630
+Date: Thu,  5 Sep 2019 20:24:12 +0100
+Message-Id: <20190905192412.23116-1-lee.jones@linaro.org>
+X-Mailer: git-send-email 2.17.1
+Sender: linux-arm-msm-owner@vger.kernel.org
+Precedence: bulk
+List-ID: <linux-arm-msm.vger.kernel.org>
+X-Mailing-List: linux-arm-msm@vger.kernel.org
+
+We have a production-level laptop (Lenovo Yoga C630) which is exhibiting
+a rather horrific bug.  When I2C HID devices are being scanned for at
+boot-time the QCom Geni based I2C (Serial Engine) attempts to use DMA.
+When it does, the laptop reboots and the user never sees the OS.
+
+Attempts are being made to debug the reason for the spontaneous reboot.
+No luck so far, hence the requirement for this hot-fix.  This workaround
+will be removed once we have a viable fix.
+
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/i2c/busses/i2c-qcom-geni.c | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
+index a89bfce5388e..17abf60c94ae 100644
+--- a/drivers/i2c/busses/i2c-qcom-geni.c
++++ b/drivers/i2c/busses/i2c-qcom-geni.c
+@@ -355,11 +355,13 @@ static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg,
+ {
+ 	dma_addr_t rx_dma;
+ 	unsigned long time_left;
+-	void *dma_buf;
++	void *dma_buf = NULL;
+ 	struct geni_se *se = &gi2c->se;
+ 	size_t len = msg->len;
+ 
+-	dma_buf = i2c_get_dma_safe_msg_buf(msg, 32);
++	if (!of_machine_is_compatible("lenovo,yoga-c630"))
++		dma_buf = i2c_get_dma_safe_msg_buf(msg, 32);
++
+ 	if (dma_buf)
+ 		geni_se_select_mode(se, GENI_SE_DMA);
+ 	else
+@@ -394,11 +396,13 @@ static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg,
+ {
+ 	dma_addr_t tx_dma;
+ 	unsigned long time_left;
+-	void *dma_buf;
++	void *dma_buf = NULL;
+ 	struct geni_se *se = &gi2c->se;
+ 	size_t len = msg->len;
+ 
+-	dma_buf = i2c_get_dma_safe_msg_buf(msg, 32);
++	if (!of_machine_is_compatible("lenovo,yoga-c630"))
++		dma_buf = i2c_get_dma_safe_msg_buf(msg, 32);
++
+ 	if (dma_buf)
+ 		geni_se_select_mode(se, GENI_SE_DMA);
+ 	else