From patchwork Fri Nov 10 11:26:52 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 10052881 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C203960365 for ; Fri, 10 Nov 2017 11:28:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A49E42B271 for ; Fri, 10 Nov 2017 11:28:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 97EB82B2A6; Fri, 10 Nov 2017 11:28:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2FCC32B271 for ; Fri, 10 Nov 2017 11:28:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=bTu3NnOfdCnf30zLahWnpcou1pGIUKiRp+aDlCV8dtM=; b=ffqdXjvnunYrKC yxksbDFy+MTvkYGKLt4x0s9EAu+fiI+OYmaqCHkJJT7yAP+940jUCmrAvuuyzTkmjB/nIHiu8HQ8c Iks+jgIxAkOctwEXDGS40/vt+gga2MVMEiIzni3w8cb6wnrsOWQIOYGWBT2/HOWucewSZrT2+uCVE L+/wsmhsb0UGlAKaYeYUIW7L2WsQu1W64bprnM5ahuSQdj4BvTgEFieZiTc5DqkngCgxgCXpI9aWs rNcwoHYmWlFmq3w48JYcJQejh72JIK/+csdNE+vnu59WWhxkZiKhIq81kvUWH58hmhFNNDH55VVde HjLEXfpKMFTHogw3zXFw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1eD7Tz-0007wa-53; Fri, 10 Nov 2017 11:28:23 +0000 Received: from fllnx209.ext.ti.com ([198.47.19.16]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1eD7Tv-0007u6-Eq for linux-arm-kernel@lists.infradead.org; Fri, 10 Nov 2017 11:28:21 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by fllnx209.ext.ti.com (8.15.1/8.15.1) with ESMTP id vAABRH5T018831; Fri, 10 Nov 2017 05:27:17 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1510313237; bh=TYLqhIrI74JkoGm6QszcllABLTr3uewjfAVjzcHSkqs=; h=From:To:CC:Subject:Date; b=guaGu2fxeS/D0CS+S5uabd0BzyzAwgudFW1pfQR52YjelJa8Zf2u5EjcoQPf1xyTR GDcZnAqSvzgXIHxZ7GMyH84qRfdT28p7LMhmMyaRDwZ9+Ip6StnuNnMpnE8Ja0g28l xglfiCC8ElAUn3vRoFwd8UdWgErKAXta8DeH31uw= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id vAABRCJM016828; Fri, 10 Nov 2017 05:27:12 -0600 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.845.34; Fri, 10 Nov 2017 05:27:11 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.845.34 via Frontend Transport; Fri, 10 Nov 2017 05:27:11 -0600 Received: from ula0393675.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id vAABR92V011031; Fri, 10 Nov 2017 05:27:09 -0600 From: Keerthy To: Subject: [PATCH] ARM: AM33xx: PRM: Remove am33xx_pwrdm_read_prev_pwrst function Date: Fri, 10 Nov 2017 16:56:52 +0530 Message-ID: <1510313212-29660-1-git-send-email-j-keerthy@ti.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171110_032819_591090_E380B3D9 X-CRM114-Status: UNSURE ( 7.45 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: rnayak@codeaurora.org, j-keerthy@ti.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Referring TRM Am335X series: http://www.ti.com/lit/ug/spruh73p/spruh73p.pdf The LastPowerStateEntered bitfield is present only for PM_CEFUSE domain. This is not present in any of the other power domains. Hence remove the generic am33xx_pwrdm_read_prev_pwrst hook which wrongly reads the reserved bit fields for all the other power domains. Reading the reserved bits leads to wrongly interpreting the low power transitions for various power domains that do not have the LastPowerStateEntered field. The pm debug counters values are wrong currently as we are incrementing them based on the reserved bits. Signed-off-by: Keerthy --- arch/arm/mach-omap2/prm33xx.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/arch/arm/mach-omap2/prm33xx.c b/arch/arm/mach-omap2/prm33xx.c index bc5df8d..dfca8d9 100644 --- a/arch/arm/mach-omap2/prm33xx.c +++ b/arch/arm/mach-omap2/prm33xx.c @@ -176,17 +176,6 @@ static int am33xx_pwrdm_read_pwrst(struct powerdomain *pwrdm) return v; } -static int am33xx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm) -{ - u32 v; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs); - v &= AM33XX_LASTPOWERSTATEENTERED_MASK; - v >>= AM33XX_LASTPOWERSTATEENTERED_SHIFT; - - return v; -} - static int am33xx_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm) { am33xx_prm_rmw_reg_bits(AM33XX_LOWPOWERSTATECHANGE_MASK, @@ -386,7 +375,6 @@ struct pwrdm_ops am33xx_pwrdm_operations = { .pwrdm_set_next_pwrst = am33xx_pwrdm_set_next_pwrst, .pwrdm_read_next_pwrst = am33xx_pwrdm_read_next_pwrst, .pwrdm_read_pwrst = am33xx_pwrdm_read_pwrst, - .pwrdm_read_prev_pwrst = am33xx_pwrdm_read_prev_pwrst, .pwrdm_set_logic_retst = am33xx_pwrdm_set_logic_retst, .pwrdm_read_logic_pwrst = am33xx_pwrdm_read_logic_pwrst, .pwrdm_read_logic_retst = am33xx_pwrdm_read_logic_retst,