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* [V7, 0/2] media: i2c: Add support for DW9768 VCM driver
@ 2020-06-05 10:54 Dongchun Zhu
  2020-06-05 10:54 ` [V7, 1/2] media: dt-bindings: media: i2c: Document DW9768 bindings Dongchun Zhu
  2020-06-05 10:54 ` [V7, 2/2] media: i2c: dw9768: Add DW9768 VCM driver Dongchun Zhu
  0 siblings, 2 replies; 17+ messages in thread
From: Dongchun Zhu @ 2020-06-05 10:54 UTC (permalink / raw)
  To: linus.walleij, bgolaszewski, 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, louis.kuo, shengnan.wang, dongchun.zhu

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 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:
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 v7 are addressing comments from Rob, Sakari, Tomasz.
Compared to v6:
 - Refine DT bindings
 - Use i2c_smbus_read_byte_data() directly to replace of dw9768_read_smbus()
 - Calculate operation time based on the configured board-specific DT settings
 - Abstract async register error handling case
 - Fix other review comments in v6

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                          |  13 +
 drivers/media/i2c/Makefile                         |   1 +
 drivers/media/i2c/dw9768.c                         | 566 +++++++++++++++++++++
 5 files changed, 688 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/dongwoon,dw9768.yaml
 create mode 100644 drivers/media/i2c/dw9768.c

-- 
2.9.2

^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, back to index

Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-05 10:54 [V7, 0/2] media: i2c: Add support for DW9768 VCM driver Dongchun Zhu
2020-06-05 10:54 ` [V7, 1/2] media: dt-bindings: media: i2c: Document DW9768 bindings Dongchun Zhu
2020-06-09 19:47   ` Rob Herring
2020-06-05 10:54 ` [V7, 2/2] media: i2c: dw9768: Add DW9768 VCM driver Dongchun Zhu
2020-06-05 12:14   ` Sakari Ailus
2020-06-05 13:02     ` Tomasz Figa
2020-06-05 13:37       ` Sakari Ailus
2020-06-06  6:24     ` Dongchun Zhu
2020-06-05 12:46   ` Andy Shevchenko
2020-06-05 13:10     ` Tomasz Figa
2020-06-06  6:19     ` Dongchun Zhu
2020-06-08 13:27       ` Andy Shevchenko
2020-06-09  3:45         ` Dongchun Zhu
2020-06-09 11:14           ` Andy Shevchenko
2020-06-10 12:58             ` Sakari Ailus
2020-06-05 13:44   ` Tomasz Figa
2020-06-06  6:42     ` Dongchun Zhu

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