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* [V2, 0/2] media: i2c: add support for DW9768 VCM driver
@ 2019-09-05  7:21 dongchun.zhu
  2019-09-05  7:21 ` [V2, 1/2] media: i2c: dw9768: Add DT support and MAINTAINERS entry dongchun.zhu
  2019-09-05  7:21 ` [V2, 2/2] media: i2c: Add DW9768 VCM driver dongchun.zhu
  0 siblings, 2 replies; 20+ messages in thread
From: dongchun.zhu @ 2019-09-05  7:21 UTC (permalink / raw)
  To: mchehab, andriy.shevchenko, robh+dt, mark.rutland, sakari.ailus,
	drinkcat, tfiga, matthias.bgg, bingbu.cao
  Cc: srv_heupstream, linux-mediatek, linux-arm-kernel, sj.huang,
	linux-media, devicetree, sam.hung, shengnan.wang, dongchun.zhu

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 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

-- 
2.9.2


^ permalink raw reply	[flat|nested] 20+ messages in thread

end of thread, other threads:[~2020-01-20  8:35 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-05  7:21 [V2, 0/2] media: i2c: add support for DW9768 VCM driver dongchun.zhu
2019-09-05  7:21 ` [V2, 1/2] media: i2c: dw9768: Add DT support and MAINTAINERS entry dongchun.zhu
2019-09-05 10:14   ` Andy Shevchenko
2019-09-05 10:48     ` Sakari Ailus
2019-09-05 11:35       ` Andy Shevchenko
2019-09-05 11:49         ` Javier Martinez Canillas
2019-09-05 12:00           ` Sakari Ailus
2019-09-05 12:24             ` Andy Shevchenko
2019-09-17 20:47               ` Rob Herring
2019-09-05  7:21 ` [V2, 2/2] media: i2c: Add DW9768 VCM driver dongchun.zhu
2019-09-05  8:21   ` Sakari Ailus
2019-09-05 10:19     ` Andy Shevchenko
2019-09-05 10:40       ` Sakari Ailus
2019-09-05 10:57         ` Javier Martinez Canillas
2019-09-05 11:36           ` Andy Shevchenko
2019-09-05  8:28   ` Tomasz Figa
2019-09-05 10:26   ` Andy Shevchenko
     [not found]     ` <e8b59857e39744a6acfe5d862f3ac8d5@mtkmbs05n2.mediatek.inc>
2020-01-20  8:34       ` Dongchun Zhu
2019-09-07 22:12   ` kbuild test robot
2019-10-09  4:40   ` Tomasz Figa

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