Messages in this thread | | | From | Nick Dyer <> | Subject | [PATCH v2 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L | Date | Wed, 4 May 2016 18:07:10 +0100 |
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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 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
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