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 51A55C282CA for ; Wed, 13 Feb 2019 02:56:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0DE7C20835 for ; Wed, 13 Feb 2019 02:56:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550026610; bh=MFeAnHiJ4r6YGufQ8LsUH1G9t/JAmsxD/hPI1z5JOmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ASZyaBJGnQKEIvncrEerKOMgb2cm6cmmEKir5HWP2IWjsUFJwiUHD9owkNhFpzBZ3 HlonMeKr03AGNl5Muh/tTlilYxx21xuGBDrV8Van31MFNQjndot4ZR8OcZwbYsoYtR Gi155dpA4OnYorLFPAUheFNLgPhdnezKuDFUpeNk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390129AbfBMC4s (ORCPT ); Tue, 12 Feb 2019 21:56:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:40824 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388256AbfBMChQ (ORCPT ); Tue, 12 Feb 2019 21:37:16 -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 7C2A8206B6; Wed, 13 Feb 2019 02:37:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550025436; bh=MFeAnHiJ4r6YGufQ8LsUH1G9t/JAmsxD/hPI1z5JOmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ldXki8z9P56zSIRzBPLzaY+JlAzbV/toEOimYtWzxRLi9R9Z8g2ELnNr0dzn/H6Y2 peLf6ZWHnQ8kiBLmH0J+mtMLtpywBy1Anr4c79sdZGuUr384fDlvUK6nUzela+0sXc FU6jQKhN1nmxFQB09eNfCEwW5XASmgsDste2mxDU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jonathan Marek , Lee Jones , Sasha Levin Subject: [PATCH AUTOSEL 4.19 12/83] mfd: qcom_rpm: write fw_version to CTRL_REG Date: Tue, 12 Feb 2019 21:35:50 -0500 Message-Id: <20190213023701.20286-12-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190213023701.20286-1-sashal@kernel.org> References: <20190213023701.20286-1-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