From: Dongchun Zhu <dongchun.zhu@mediatek.com> To: <linus.walleij@linaro.org>, <bgolaszewski@baylibre.com>, <mchehab@kernel.org>, <andriy.shevchenko@linux.intel.com>, <robh+dt@kernel.org>, <mark.rutland@arm.com>, <sakari.ailus@linux.intel.com>, <drinkcat@chromium.org>, <tfiga@chromium.org>, <matthias.bgg@gmail.com>, <bingbu.cao@intel.com> Cc: <srv_heupstream@mediatek.com>, <linux-mediatek@lists.infradead.org>, <linux-arm-kernel@lists.infradead.org>, <sj.huang@mediatek.com>, <linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>, <louis.kuo@mediatek.com>, <shengnan.wang@mediatek.com>, <dongchun.zhu@mediatek.com> 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> (raw) 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 -- 2.9.2
next reply index Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-02 16:17 Dongchun Zhu [this message] 2020-05-02 16:17 ` [V5, 1/2] media: dt-bindings: media: i2c: Document DW9768 bindings Dongchun Zhu 2020-05-05 19:15 ` Rob Herring 2020-05-02 16:17 ` [V5, 2/2] media: i2c: dw9768: Add DW9768 VCM driver Dongchun Zhu 2020-05-06 15:13 ` Sakari Ailus 2020-05-07 12:45 ` Dongchun Zhu 2020-05-07 13:12 ` Sakari Ailus 2020-05-07 13:46 ` Tomasz Figa 2020-05-07 14:00 ` Sakari Ailus 2020-05-08 3:27 ` Dongchun Zhu 2020-05-08 3:08 ` Dongchun Zhu 2020-05-08 21:13 ` Sakari Ailus 2020-05-09 2:23 ` Dongchun Zhu 2020-05-11 18:20 ` Tomasz Figa 2020-05-12 3:33 ` Dongchun Zhu 2020-05-12 8:58 ` Sakari Ailus 2020-05-12 11:32 ` Dongchun Zhu
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