Adding devicetree overlords...
On Wed, Apr 20, 2016 at 08:54:43AM +0200, Dirk Behme wrote:
> From: Knut Wohlrab <Knut.Wohlrab@xxxxxxxxxxxx>
>
> Add device tree support for idle and finger scanning frequency.
>
> Signed-off-by: Knut Wohlrab <Knut.Wohlrab@xxxxxxxxxxxx>
> Signed-off-by: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
> Signed-off-by: Dirk Behme <dirk.behme@xxxxxxxxxxxx>
> ---
> .../devicetree/bindings/input/touchscreen/zforce_ts.txt | 4 ++++
> drivers/input/touchscreen/zforce_ts.c | 15 ++++++++++++++-
> include/linux/platform_data/zforce_ts.h | 2 ++
> 3 files changed, 20 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/zforce_ts.txt b/Documentation/devicetree/bindings/input/touchscreen/zforce_ts.txt
> index e3c27c4..09ead84 100644
> --- a/Documentation/devicetree/bindings/input/touchscreen/zforce_ts.txt
> +++ b/Documentation/devicetree/bindings/input/touchscreen/zforce_ts.txt
> @@ -11,6 +11,8 @@ Required properties:
> Optional properties:
> - irq-gpios : interrupt gpio the chip is connected to
> - vdd-supply: Regulator controlling the controller supply
> +- scan-freq-idle: idle scanning frequency in Hz (0 - 65535 Hz; default 10 Hz)
> +- scan-freq-finger: touch scanning frequeny in Hz (0 - 65535 Hz; default 50 Hz)
Should we cal it scan-freq-active instead?
>
> Example:
>
> @@ -28,6 +30,8 @@ Example:
>
> x-size = <800>;
> y-size = <600>;
> + scan-freq-idle = <50>;
> + scan-freq-finger = <250>;
> };
>
> /* ... */
> diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
> index ddfc120..51fe2de 100644
> --- a/drivers/input/touchscreen/zforce_ts.c
> +++ b/drivers/input/touchscreen/zforce_ts.c
> @@ -87,6 +87,9 @@
>
> #define SETCONFIG_DUALTOUCH (1 << 0)
>
> +#define SCAN_FREQ_DEFAULT_IDLE 10
> +#define SCAN_FREQ_DEFAULT_FINGER 50
> +
> struct zforce_point {
> int coord_x;
> int coord_y;
> @@ -304,7 +307,9 @@ static int zforce_start(struct zforce_ts *ts)
> goto error;
> }
>
> - ret = zforce_scan_frequency(ts, 10, 50, 50);
> + ret = zforce_scan_frequency(ts, pdata->scan_freq_idle,
> + pdata->scan_freq_finger,
> + pdata->scan_freq_finger);
> if (ret) {
> dev_err(&client->dev, "Unable to set scan frequency, %d\n",
> ret);
> @@ -839,6 +844,14 @@ static struct zforce_ts_platdata *zforce_parse_dt(struct device *dev)
> return ERR_PTR(-EINVAL);
> }
>
> + if (of_property_read_u16(np, "scan-freq-idle",
> + &pdata->scan_freq_idle))
> + pdata->scan_freq_idle = SCAN_FREQ_DEFAULT_IDLE;
> +
> + if (of_property_read_u16(np, "scan-freq-finger",
> + &pdata->scan_freq_finger))
> + pdata->scan_freq_finger = SCAN_FREQ_DEFAULT_FINGER;
> +
> return pdata;
> }
>
> diff --git a/include/linux/platform_data/zforce_ts.h b/include/linux/platform_data/zforce_ts.h
> index 7bdece8..90a1181 100644
> --- a/include/linux/platform_data/zforce_ts.h
> +++ b/include/linux/platform_data/zforce_ts.h
> @@ -18,6 +18,8 @@
> struct zforce_ts_platdata {
> unsigned int x_max;
> unsigned int y_max;
> + u16 scan_freq_idle;
> + u16 scan_freq_finger;
> };
>
> #endif /* _LINUX_INPUT_ZFORCE_TS_H */
> --
> 2.8.0
>
--
Dmitry
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