On Sun, Jan 10, 2016 at 06:36:09PM +0100, Oreste Salerno wrote:
> When using device trees, it's not possible to assign an init()
> function in the platform data.
> In case the init function has not been assigned, attempt to
> perform a hard reset of the chip, using reset gpio defined in the
> platform data / device tree.
Hmm, I do not see any users of cyttsp platform data in mainline, so
let's kill init/exit and just do GPIO toggle for everyone. We might need
to add regulator support as well, but that's when someone will need it.
Thanks.
>
> Signed-off-by: Oreste Salerno <oreste.salerno@xxxxxxxxxx>
> ---
> drivers/input/touchscreen/cyttsp_core.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c
> index 5dc6bf6..baf0fd5 100644
> --- a/drivers/input/touchscreen/cyttsp_core.c
> +++ b/drivers/input/touchscreen/cyttsp_core.c
> @@ -239,6 +239,16 @@ static int cyttsp_set_sysinfo_regs(struct cyttsp *ts)
> return retval;
> }
>
> +static void cyttsp_hard_reset(struct cyttsp *ts)
> +{
> + if (ts->pdata->reset_gpio) {
> + gpiod_set_value_cansleep(ts->pdata->reset_gpio, 1);
> + msleep(CY_DELAY_DFLT);
> + gpiod_set_value_cansleep(ts->pdata->reset_gpio, 0);
> + msleep(CY_DELAY_DFLT);
> + }
> +}
> +
> static int cyttsp_soft_reset(struct cyttsp *ts)
> {
> unsigned long timeout;
> @@ -685,6 +695,8 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
> error);
> goto err_free_mem;
> }
> + } else {
> + cyttsp_hard_reset(ts);
> }
>
> input_dev->name = pdata->name;
> --
> 1.9.1
>
--
Dmitry
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