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 91E80C282C4 for ; Wed, 13 Feb 2019 02:44:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 59AC2214DA for ; Wed, 13 Feb 2019 02:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550025865; bh=MyCKU1NOBHfz9WgTtMeG8agMWU4wRJRx++RjpjGCkbA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=aB0yip5Ygo6QeEQaybBEQCgnqTumG6AxAJXUejfLoxpSBmuq6e/+SICsw9FiD59Mv d5aG1hr0uIzzEozHKUtgOZn2PFg5kNffJTunGWsdivqfKKJHbs3IDRd0w99dTXFaex zUgBNeXvHlYpZ7ExrTpSrRsbClJZwaIirzRUnYdI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389595AbfBMCoX (ORCPT ); Tue, 12 Feb 2019 21:44:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:45006 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389234AbfBMClT (ORCPT ); Tue, 12 Feb 2019 21:41:19 -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 573E22175B; Wed, 13 Feb 2019 02:41:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550025679; bh=MyCKU1NOBHfz9WgTtMeG8agMWU4wRJRx++RjpjGCkbA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RHTLdJZ1r5cbGwpNSloUrUmtWhvXS0SoqFaIQFXQWmMCiGblUz2BX3NIc3imM7eE/ WANdogDvktQ39qFva8cPQWIldRNHydJhQSkg+0DBeG4qDRUS30HKRzrKs/kzQECpN2 i6MqNpOltaDpz0IbDUgHPfchRglTEV5ptHcFLjYo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jonathan Marek , Lee Jones , Sasha Levin Subject: [PATCH AUTOSEL 4.4 05/16] mfd: qcom_rpm: write fw_version to CTRL_REG Date: Tue, 12 Feb 2019 21:41:01 -0500 Message-Id: <20190213024112.22038-5-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190213024112.22038-1-sashal@kernel.org> References: <20190213024112.22038-1-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 a867cc91657e..27486f278201 100644 --- a/drivers/mfd/qcom_rpm.c +++ b/drivers/mfd/qcom_rpm.c @@ -570,6 +570,10 @@ 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