From patchwork Tue Jun 30 06:22:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongchun Zhu X-Patchwork-Id: 11633223 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 E0F15138C for ; Tue, 30 Jun 2020 06:22:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4D5620775 for ; Tue, 30 Jun 2020 06:22:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="Q64iXN0K" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730040AbgF3GWm (ORCPT ); Tue, 30 Jun 2020 02:22:42 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:53950 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1729901AbgF3GWl (ORCPT ); Tue, 30 Jun 2020 02:22:41 -0400 X-UUID: 58c55bafefdb433484826967884d46ed-20200630 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=nR6OzzIisReA8shV0BgR3bsU+tUWbUvrl963V50edjM=; b=Q64iXN0KDB+49ds74oVzmvWAlkcdaUMxtxYJNw438CBRQEmUJod+Dg57rXYp3lgjCZ9CdPS0fccuOAXnNi7+A7q88VoaCbeHkNpcdY95AwCz7r6m4UDtzYZyAAustrCuw1RUoF1GWSuVoR1WfMHuWT/H+BJV4559Vk33CXjE5DY=; X-UUID: 58c55bafefdb433484826967884d46ed-20200630 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 898209961; Tue, 30 Jun 2020 14:22:35 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 30 Jun 2020 14:22:32 +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; Tue, 30 Jun 2020 14:22:33 +0800 From: Dongchun Zhu To: , , , , , , , , , , CC: , , , , , , , , Subject: [PATCH V9 0/2] media: i2c: Add support for DW9768 VCM Date: Tue, 30 Jun 2020 14:22:09 +0800 Message-ID: <20200630062211.22988-1-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 and V4L2 sub-device driver for Dongwoon's DW9768, which is a 10-bit DAC with 100mA output current sink capability. The driver is designed for linear control of voice coil motor(VCM). It creates a V4L2 sub-device and provides control 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: v8: https://lore.kernel.org/linux-media/20200616125531.31671-1-dongchun.zhu@mediatek.com/ v7: https://lore.kernel.org/linux-media/20200605105412.18813-1-dongchun.zhu@mediatek.com/ v6: https://lore.kernel.org/linux-media/20200518132731.20855-1-dongchun.zhu@mediatek.com/ v5: https://lore.kernel.org/linux-media/20200502161727.30463-1-dongchun.zhu@mediatek.com/ 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/ Mainly changes of v9 are addressing comments from Tomasz. Compared to v8: - Refine dw9768_cal_move_delay() to return the value in a standard unit - Refine err_power_off error handler section in probe() - Use pm_runtime_status_suspended() in remove() 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 | 100 ++++ MAINTAINERS | 8 + drivers/media/i2c/Kconfig | 12 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/dw9768.c | 554 +++++++++++++++++++++ 5 files changed, 675 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/dongwoon,dw9768.yaml create mode 100644 drivers/media/i2c/dw9768.c