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[0/2] media: add support for DW9768 VCM driver

Message ID 20190708100641.2702-1-dongchun.zhu@mediatek.com (mailing list archive)
Headers

Message

Dongchun Zhu July 8, 2019, 10:06 a.m. UTC 
  From: Dongchun Zhu <dongchun.zhu@mediatek.com>

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 support :
 - set DW9768 to standby mode once suspend and turn it back to active if resume
 - set the position via V4L2_CID_FOCUS_ABSOLUTE ctrl

Dongchun Zhu (2):
  media: i2c: dw9768: Add DT support and MAINTAINERS entry
  media: i2c: dw9768: 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                         | 458 +++++++++++++++++++++
 5 files changed, 486 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/dongwoon,dw9768.txt
 create mode 100644 drivers/media/i2c/dw9768.c