From patchwork Sat May 2 16:17:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongchun Zhu X-Patchwork-Id: 11523969 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 847E514B4 for ; Sat, 2 May 2020 16:18:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65C3C21974 for ; Sat, 2 May 2020 16:18:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="gteqzQ8Y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728363AbgEBQSd (ORCPT ); Sat, 2 May 2020 12:18:33 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:34943 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728235AbgEBQSd (ORCPT ); Sat, 2 May 2020 12:18:33 -0400 X-UUID: d4da2c91a54b4fbfac170d4fb213753e-20200503 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=EAAh30Bef+oW9eX3BIR+Eagl/ceAkjF9T1b8MCX4U/s=; b=gteqzQ8YkMYcJB1FRKXZfdwyUoGdEgzj11pVC45ifZLdzJyvW6/t5zeAT9Joyv4ezFWVa80Y22BlYEA6buj0tPQ6WO45gOkYeg/v+5uzFq8bOCD+AzucxHjWUTZkqqTxRDuBeCHLO3Hf4Zei7fJfD5gx6yHvCekZ7Qc9r6l9y2o=; X-UUID: d4da2c91a54b4fbfac170d4fb213753e-20200503 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 798395048; Sun, 03 May 2020 00:18:29 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 3 May 2020 00:18:23 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sun, 3 May 2020 00:18:24 +0800 From: Dongchun Zhu To: , , , , , , , , , , CC: , , , , , , , , Subject: [V5, 0/2] media: i2c: Add support for DW9768 VCM driver Date: Sun, 3 May 2020 00:17:25 +0800 Message-ID: <20200502161727.30463-1-dongchun.zhu@mediatek.com> X-Mailer: git-send-email 2.9.2 MIME-Version: 1.0 X-MTK: N Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hello, This series adds DT bindings in YAML and V4L2 sub-device driver for DW9768 lens voice coil motor, which is a 10-bit DAC with 100mA output current sink capability from Dongwoon. The driver is designed for linear control of voice coil motor, and controlled via IIC serial interface to set the desired focus. It controls the position with 10-bit DAC data D[9:0] and seperates two 8-bit registers to control the VCM position as belows. DAC_MSB: D[9:8](ADDR: 0x03): +---+---+---+---+---+---+---+---+ |---|---|---|---|---|---|D09|D08| +---+---+---+---+---+---+---+---+ DAC_LSB: D[7:0](ADDR: 0x04): +---+---+---+---+---+---+---+---+ |D07|D06|D05|D04|D03|D02|D01|D00| +---+---+---+---+---+---+---+---+ This driver supports: - set DW9768 to standby mode once suspend and turn it back to active if resume - set the desired focus via V4L2_CID_FOCUS_ABSOLUTE ctrl Previous versions of this patch-set can be found here: v4: https://lore.kernel.org/linux-media/20200330123634.363-1-dongchun.zhu@mediatek.com/ v3: https://lore.kernel.org/linux-media/20200228155958.20657-1-dongchun.zhu@mediatek.com/ v2: https://lore.kernel.org/linux-media/20190905072142.14606-1-dongchun.zhu@mediatek.com/ v1: https://lore.kernel.org/linux-media/20190708100641.2702-1-dongchun.zhu@mediatek.com/ Changes of v5 are addressing comments from Rob, Andy, Sakari, including: - Rebase onto 5.7-rc1 - Refine DT bindings in YAML - Remove the condition of IS_ENABLED(CONFIG_PM) as the driver depends on PM - Reverse the order of enabling RPM and registering the async subdev Please review. Thanks. Dongchun Zhu (2): media: dt-bindings: media: i2c: Document DW9768 bindings media: i2c: dw9768: Add DW9768 VCM driver .../bindings/media/i2c/dongwoon,dw9768.yaml | 60 +++ MAINTAINERS | 8 + drivers/media/i2c/Kconfig | 11 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/dw9768.c | 440 +++++++++++++++++++++ 5 files changed, 520 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/dongwoon,dw9768.yaml create mode 100644 drivers/media/i2c/dw9768.c