From patchwork Thu Sep 5 07:21:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongchun Zhu X-Patchwork-Id: 11132299 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F3DA81709 for ; Thu, 5 Sep 2019 07:22:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 D1B892341C for ; Thu, 5 Sep 2019 07:22:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="MrUSoVt3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1B892341C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org 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=lYbcDREHsoL3u1eWMCWcYVBRIQY3k1W3PV6LxHyfxlE=; b=MrUSoVt3vHMnrS WEECcYi6gVReBDNbENR2M+SbVFyGIRL8VXIff8GTPk/fb87KtKjhkJGAjcWb/OJe+W9Ovww8elrlk NFI45SMlhjICO3EvPsJZoa2a5shIWNq3+E1/m8aORjbIDLLmeVWbeX1iSMLeuz+b9D2I+D1FvGUg0 QUO509vtE3wfklbIAtC68RDaC6JK91YpER7cDVAOPUdTZ5BaihMThIzE1aX5+nwsVfNVl283Vust6 p6GpLl7K/Cc67KzSW8paYapEKs0Rp8VIpaaDxGBJ6DVZmhloSeqzziiCvEr+5cNMhMBRw0gNj73Xo 9J7HTxvPstM2YxN+1iXQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i5m5m-0001ra-BZ; Thu, 05 Sep 2019 07:22:06 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i5m5i-0001pG-63; Thu, 05 Sep 2019 07:22:03 +0000 X-UUID: fb99889b985e4c598737398ac79eb3d4-20190904 X-UUID: fb99889b985e4c598737398ac79eb3d4-20190904 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1271784923; Wed, 04 Sep 2019 23:21:50 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 5 Sep 2019 00:21:48 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 5 Sep 2019 15:21:47 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 5 Sep 2019 15:21:46 +0800 From: To: , , , , , , , , Subject: [V2, 0/2] media: i2c: add support for DW9768 VCM driver Date: Thu, 5 Sep 2019 15:21:40 +0800 Message-ID: <20190905072142.14606-1-dongchun.zhu@mediatek.com> X-Mailer: git-send-email 2.9.2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190905_002202_230768_6704779E X-CRM114-Status: UNSURE ( 8.02 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, shengnan.wang@mediatek.com, sj.huang@mediatek.com, linux-mediatek@lists.infradead.org, dongchun.zhu@mediatek.com, sam.hung@mediatek.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org From: Dongchun Zhu Hello, Add a v4l2 sub-device driver for Dongwoon's DW9768 lens voice coil. This is a voice coil module using the i2c bus to control the focus position. The DW9768 can control the position with 10 bits value and consists of two 8 bit registers show as below. register 0x04(DW9768_REG_POSITION): +---+---+---+---+---+---+---+---+ |D07|D06|D05|D04|D03|D02|D01|D00| +---+---+---+---+---+---+---+---+ register 0x03: +---+---+---+---+---+---+---+---+ |---|---|---|---|---|---|D09|D08| +---+---+---+---+---+---+---+---+ This driver supports: - set DW9768 to standby mode once suspend and turn it back to active if resume - set the position via V4L2_CID_FOCUS_ABSOLUTE ctrl Mainly changes of v2 are addressing the comments from Tomasz, Bingbu, Andy, including, - Use i2c_smbus_write_byte_data/i2c_smbus_write_block_data to write I2C register - Adopt the runtime PM suspend/resume callbacks to powering off/on - Check the PM runtime status before powering off in dw9768_remove function - Add one more regulator vin for the I2C interface - Remove or refine redundant log print - Fix other reviewed issues in v1 Dongchun Zhu (2): media: i2c: dw9768: Add DT support and MAINTAINERS entry media: i2c: Add DW9768 VCM driver .../bindings/media/i2c/dongwoon,dw9768.txt | 9 + MAINTAINERS | 8 + drivers/media/i2c/Kconfig | 10 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/dw9768.c | 349 +++++++++++++++++++++ 5 files changed, 377 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/dongwoon,dw9768.txt create mode 100644 drivers/media/i2c/dw9768.c