From patchwork Thu Oct 24 08:01:00 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Denis Carikli X-Patchwork-Id: 285811 Return-Path: X-Original-To: incoming-imx@patchwork.ozlabs.org Delivered-To: patchwork-incoming-imx@bilbo.ozlabs.org Received: from casper.infradead.org (unknown [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 8022F2C00C6 for ; Thu, 24 Oct 2013 19:02:30 +1100 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VZFrm-0005Un-H4; Thu, 24 Oct 2013 08:02:02 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VZFrg-0000Ul-A2; Thu, 24 Oct 2013 08:01:56 +0000 Received: from smtp4-g21.free.fr ([2a01:e0c:1:1599::13]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VZFrR-0000SD-Do for linux-arm-kernel@lists.infradead.org; Thu, 24 Oct 2013 08:01:43 +0000 Received: from denis-N73SV.local.eukrea.com (unknown [88.170.243.169]) by smtp4-g21.free.fr (Postfix) with ESMTP id 9F66A4C80C0; Thu, 24 Oct 2013 10:01:13 +0200 (CEST) From: Denis Carikli To: Sascha Hauer Subject: [PATCHv6][ 2/7] video: imxfb: Also add pwmr for the device tree. Date: Thu, 24 Oct 2013 10:01:00 +0200 Message-Id: <1382601665-6830-2-git-send-email-denis@eukrea.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1382601665-6830-1-git-send-email-denis@eukrea.com> References: <1382601665-6830-1-git-send-email-denis@eukrea.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131024_040142_096532_7B0C9D99 X-CRM114-Status: GOOD ( 10.63 ) X-Spam-Score: -1.2 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.7 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Mark Rutland , devicetree@vger.kernel.org, linux-fbdev@vger.kernel.org, Pawel Moll , Stephen Warren , Ian Campbell , Rob Herring , Denis Carikli , Tomi Valkeinen , =?UTF-8?q?Eric=20B=C3=A9nard?= , Shawn Guo , Jean-Christophe Plagniol-Villard , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org pwmr has to be set to get the imxfb backlight work, though pwmr was only configurable trough the platform data. Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Stephen Warren Cc: Ian Campbell Cc: devicetree@vger.kernel.org Cc: Jean-Christophe Plagniol-Villard Cc: Tomi Valkeinen Cc: linux-fbdev@vger.kernel.org Cc: Sascha Hauer Cc: linux-arm-kernel@lists.infradead.org Cc: Eric Bénard Signed-off-by: Denis Carikli Acked-by: Jean-Christophe PLAGNIOL-VILLARD --- .../devicetree/bindings/video/fsl,imx-fb.txt | 3 +++ drivers/video/imxfb.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/video/fsl,imx-fb.txt b/Documentation/devicetree/bindings/video/fsl,imx-fb.txt index 46da08d..ac457ae 100644 --- a/Documentation/devicetree/bindings/video/fsl,imx-fb.txt +++ b/Documentation/devicetree/bindings/video/fsl,imx-fb.txt @@ -17,6 +17,9 @@ Required nodes: Optional properties: - fsl,dmacr: DMA Control Register value. This is optional. By default, the register is not modified as recommended by the datasheet. +- fsl,pwmr: LCDC PWM Contrast Control Register value. That property is + optional, but defining it is necessary to get the backlight working. If that + property is ommited, the register is zeroed. - fsl,lscr1: LCDC Sharp Configuration Register value. Example: diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c index 4bf3837..f09372d 100644 --- a/drivers/video/imxfb.c +++ b/drivers/video/imxfb.c @@ -833,6 +833,8 @@ static int imxfb_init_fbinfo(struct platform_device *pdev) of_property_read_u32(np, "fsl,dmacr", &fbi->dmacr); + of_property_read_u32(np, "fsl,pwmr", &fbi->pwmr); + /* These two function pointers could be used by some specific * platforms. */ fbi->lcd_power = NULL;