From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 C0678C282C4 for ; Wed, 13 Feb 2019 02:49:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F2D421934 for ; Wed, 13 Feb 2019 02:49:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550026192; bh=MFeAnHiJ4r6YGufQ8LsUH1G9t/JAmsxD/hPI1z5JOmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xtjogxt+U5yrWDLAN3ymcfyOyXAqRx3h3hkbT0SdssEQlBBKJqMhlrV/MGzb4eoYv 7+/ETLIH+PQW+oDSd9LQua9P4w1kW3ze2kPcebVQA4Ej66Q6jMfgEyxGev5LD7PXW2 XHLCYHY9rTI/0qrfFQbrjyUKprneFRy9nEFJhrv4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389805AbfBMCtp (ORCPT ); Tue, 12 Feb 2019 21:49:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:43688 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388875AbfBMCkC (ORCPT ); Tue, 12 Feb 2019 21:40:02 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 96057222C7; Wed, 13 Feb 2019 02:40:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550025602; bh=MFeAnHiJ4r6YGufQ8LsUH1G9t/JAmsxD/hPI1z5JOmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bWIk4yvoRHtBG/lKToUxdT3ysJrAcN4TEaHJpHbUQz7NHLEY/tCRbr2THrEqS2WE9 fjY/PIAAVtYKHxlcb98bNMyqusflDInKasmhiILPp1e9xwKbMVZ6EGiPBAa8DoieZT Luu/x8ihi0ZgvJQ/NVa/Naqn7TD/WGPu1nVnjejE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jonathan Marek , Lee Jones , Sasha Levin Subject: [PATCH AUTOSEL 4.14 08/34] mfd: qcom_rpm: write fw_version to CTRL_REG Date: Tue, 12 Feb 2019 21:39:26 -0500 Message-Id: <20190213023952.21311-8-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190213023952.21311-1-sashal@kernel.org> References: <20190213023952.21311-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonathan Marek [ Upstream commit 504e4175829c44328773b96ad9c538e4783a8d22 ] This is required as part of the initialization sequence on certain SoCs. If these registers are not initialized, the hardware can be unresponsive. This fixes the driver on apq8060 (HP TouchPad device). Signed-off-by: Jonathan Marek Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/qcom_rpm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c index 52fafea06067..8d420c37b2a6 100644 --- a/drivers/mfd/qcom_rpm.c +++ b/drivers/mfd/qcom_rpm.c @@ -638,6 +638,10 @@ static int qcom_rpm_probe(struct platform_device *pdev) return -EFAULT; } + writel(fw_version[0], RPM_CTRL_REG(rpm, 0)); + writel(fw_version[1], RPM_CTRL_REG(rpm, 1)); + writel(fw_version[2], RPM_CTRL_REG(rpm, 2)); + dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0], fw_version[1], fw_version[2]); -- 2.19.1