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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 810B8C10F27 for ; Mon, 9 Mar 2020 19:36:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 637062467C for ; Mon, 9 Mar 2020 19:36:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726892AbgCITf7 (ORCPT ); Mon, 9 Mar 2020 15:35:59 -0400 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:22379 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726510AbgCITfX (ORCPT ); Mon, 9 Mar 2020 15:35:23 -0400 Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-02.qualcomm.com with ESMTP; 09 Mar 2020 12:35:21 -0700 Received: from gurus-linux.qualcomm.com ([10.46.162.81]) by ironmsg01-sd.qualcomm.com with ESMTP; 09 Mar 2020 12:35:20 -0700 Received: by gurus-linux.qualcomm.com (Postfix, from userid 383780) id 86E3E4973; Mon, 9 Mar 2020 12:35:20 -0700 (PDT) From: Guru Das Srinagesh To: linux-pwm@vger.kernel.org Cc: Thierry Reding , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Subbaraman Narayanamurthy , linux-kernel@vger.kernel.org, Guru Das Srinagesh , Jani Nikula , Joonas Lahtinen , David Airlie , Daniel Vetter , Chris Wilson , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH v7 02/13] drm/i915: Use 64-bit division macros for period and duty cycle Date: Mon, 9 Mar 2020 12:35:05 -0700 Message-Id: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Because period and duty cycle are defined in the PWM framework structs as ints with units of nanoseconds, the maximum time duration that can be set is limited to ~2.147 seconds. Redefining them as u64 values will enable larger time durations to be set. As a first step, prepare drivers to handle the switch to u64 period and duty_cycle by replacing division operations involving pwm period and duty cycle with their 64-bit equivalents as appropriate. The actual switch to u64 period and duty_cycle follows as a separate patch. Where the dividend is 64-bit but the divisor is 32-bit, use *_ULL macros: - DIV_ROUND_UP_ULL - DIV_ROUND_CLOSEST_ULL - div_u64 Where the divisor is 64-bit (dividend may be 32-bit or 64-bit), use DIV64_* macros: - DIV64_U64_ROUND_CLOSEST - div64_u64 Cc: Jani Nikula Cc: Joonas Lahtinen Cc: David Airlie Cc: Daniel Vetter Cc: Chris Wilson Cc: "Ville Syrjälä" Cc: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Guru Das Srinagesh --- drivers/gpu/drm/i915/display/intel_panel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c index bc14e9c..843cac1 100644 --- a/drivers/gpu/drm/i915/display/intel_panel.c +++ b/drivers/gpu/drm/i915/display/intel_panel.c @@ -1868,7 +1868,7 @@ static int pwm_setup_backlight(struct intel_connector *connector, panel->backlight.min = 0; /* 0% */ panel->backlight.max = 100; /* 100% */ - panel->backlight.level = DIV_ROUND_UP( + panel->backlight.level = DIV_ROUND_UP_ULL( pwm_get_duty_cycle(panel->backlight.pwm) * 100, CRC_PMIC_PWM_PERIOD_NS); panel->backlight.enabled = panel->backlight.level != 0; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 6C30EC10F27 for ; Tue, 10 Mar 2020 08:20:08 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4B4932253D for ; Tue, 10 Mar 2020 08:20:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4B4932253D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 174166E83D; Tue, 10 Mar 2020 08:19:17 +0000 (UTC) X-Greylist: delayed 364 seconds by postgrey-1.36 at gabe; Mon, 09 Mar 2020 19:41:25 UTC Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6D14089718; Mon, 9 Mar 2020 19:41:25 +0000 (UTC) Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-01.qualcomm.com with ESMTP; 09 Mar 2020 12:35:21 -0700 Received: from gurus-linux.qualcomm.com ([10.46.162.81]) by ironmsg01-sd.qualcomm.com with ESMTP; 09 Mar 2020 12:35:20 -0700 Received: by gurus-linux.qualcomm.com (Postfix, from userid 383780) id 86E3E4973; Mon, 9 Mar 2020 12:35:20 -0700 (PDT) From: Guru Das Srinagesh To: linux-pwm@vger.kernel.org Subject: [PATCH v7 02/13] drm/i915: Use 64-bit division macros for period and duty cycle Date: Mon, 9 Mar 2020 12:35:05 -0700 Message-Id: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 10 Mar 2020 08:19:05 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Guru Das Srinagesh , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thierry Reding , dri-devel@lists.freedesktop.org, Subbaraman Narayanamurthy Content-Type: text/plain; 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09 Mar 2020 12:35:21 -0700 Received: from gurus-linux.qualcomm.com ([10.46.162.81]) by ironmsg01-sd.qualcomm.com with ESMTP; 09 Mar 2020 12:35:20 -0700 Received: by gurus-linux.qualcomm.com (Postfix, from userid 383780) id 86E3E4973; Mon, 9 Mar 2020 12:35:20 -0700 (PDT) From: Guru Das Srinagesh To: linux-pwm@vger.kernel.org Date: Mon, 9 Mar 2020 12:35:05 -0700 Message-Id: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 10 Mar 2020 06:25:20 +0000 Subject: [Intel-gfx] [PATCH v7 02/13] drm/i915: Use 64-bit division macros for period and duty cycle X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Guru Das Srinagesh , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Subbaraman Narayanamurthy Content-Type: text/plain; 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