Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1411396

[PATCH v3 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L

Show all headers | View raw

This is a series of patches to add diagnostic data support to the Atmel
maXTouch driver. It's a rewrite of the previous implementation which output via
debugfs: it now uses a V4L2 device in a similar way to the sur40 driver.

There are significant performance advantages to putting this code into the
driver.  The algorithm for retrieving the data has been fairly consistent
across a range of chips, with the exception of the mXT1386 series (see patch).

We have a utility which can read the data and display it in a useful format:
    https://github.com/ndyer/heatmap/commits/heatmap-v4l

These patches are also available from
    https://github.com/ndyer/linux/commits/diagnostic-v4l

Changes in v3:
- Address V4L2 review comments from Hans Verkuil
- Run v4l-compliance and fix all issues - needs minor patch here:
  https://github.com/ndyer/v4l-utils/commit/cf50469773f

Changes in v2:
- Split pixfmt changes into separate commit and add DocBook
- Introduce VFL_TYPE_TOUCH_SENSOR and /dev/v4l-touch
- Remove "single node" support for now, it may be better to treat it as metadata later
- Explicitly set VFL_DIR_RX
- Fix Kconfig

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH v3 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
  [PATCH v3 2/8] [media] Add signed 16-bit pixel format Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
  [PATCH v3 4/8] Input: atmel_mxt_ts - output diagnostic debug via v4l2 device Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
    Re: [PATCH v3 4/8] Input: atmel_mxt_ts - output diagnostic debug via  v4l2 device Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-06-01 20:20 +0200
  [PATCH v3 7/8] Input: atmel_mxt_ts - add diagnostic data support for mXT1386 Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
    Re: [PATCH v3 7/8] Input: atmel_mxt_ts - add diagnostic data support  for mXT1386 Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-06-01 20:20 +0200
  [PATCH v3 1/8] Input: atmel_mxt_ts - add support for T37 diagnostic data Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
    Re: [PATCH v3 1/8] Input: atmel_mxt_ts - add support for T37  diagnostic data Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-06-01 20:20 +0200
  [PATCH v3 5/8] Input: atmel_mxt_ts - read touchscreen size Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
  [PATCH v3 3/8] [media] v4l2-core: Add VFL_TYPE_TOUCH_SENSOR Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
  [PATCH v3 6/8] Input: atmel_mxt_ts - handle diagnostic data orientation Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
  [PATCH v3 8/8] Input: atmel_mxt_ts - add support for reference data Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-01 18:50 +0200
  Re: [PATCH v3 0/8] Input: atmel_mxt_ts - output raw touch diagnostic  data via V4L Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-06-01 20:20 +0200
    Re: [PATCH v3 0/8] Input: atmel_mxt_ts - output raw touch diagnostic  data via V4L Nick Dyer <nick.dyer@itdev.co.uk> - 2016-06-02 17:20 +0200

csiph-web