On Sun, Dec 11, 2016 at 1:06 AM, Guy Shapiro <guy.shapiro@xxxxxxxxxxxxx> wrote:
> Make the avarage-samples property a general touchscreen property
> rather than imx6ul device specific.
>
> Signed-off-by: Guy Shapiro <guy.shapiro@xxxxxxxxxxxxx>
> ---
> .../bindings/input/touchscreen/imx6ul_tsc.txt | 11 ++----
> .../bindings/input/touchscreen/touchscreen.txt | 3 ++
> drivers/input/touchscreen/imx6ul_tsc.c | 46 ++++++++++++++++------
> 3 files changed, 41 insertions(+), 19 deletions(-)
[...]
> + switch (average_samples) {
> + case 1:
> + tsc->average_enable = false;
> + tsc->average_select = 0; /* value unused; initialize anyway */
> + break;
> + case 4:
> + tsc->average_enable = true;
> + tsc->average_select = 0;
> + break;
> + case 8:
> + tsc->average_enable = true;
> + tsc->average_select = 1;
> + break;
> + case 16:
> + tsc->average_enable = true;
> + tsc->average_select = 2;
> + break;
> + case 32:
> + tsc->average_enable = true;
> + tsc->average_select = 3;
> + break;
This could be more efficiently written as
tsc->average_select = log2(average_samples) - 2;
Then enable if >=0.
Rob
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