Since we removed support for calling an init() callback from
the platform data, introduce a function which initializes
the chip by performing a hard reset, using the reset gpio
defined in the device properties.
Signed-off-by: Oreste Salerno <oreste.salerno@xxxxxxxxxx>
---
drivers/input/touchscreen/cyttsp_core.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c
index 92b459d..19499a6 100644
--- a/drivers/input/touchscreen/cyttsp_core.c
+++ b/drivers/input/touchscreen/cyttsp_core.c
@@ -240,6 +240,14 @@ static int cyttsp_set_sysinfo_regs(struct cyttsp *ts)
return retval;
}
+static void cyttsp_hard_reset(struct cyttsp *ts)
+{
+ gpiod_set_value_cansleep(ts->reset_gpio, 1);
+ msleep(CY_DELAY_DFLT);
+ gpiod_set_value_cansleep(ts->reset_gpio, 0);
+ msleep(CY_DELAY_DFLT);
+}
+
static int cyttsp_soft_reset(struct cyttsp *ts)
{
unsigned long timeout;
@@ -668,6 +676,8 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
disable_irq(ts->irq);
+ cyttsp_hard_reset(ts);
+
error = cyttsp_power_on(ts);
if (error)
return ERR_PTR(error);
--
1.9.1
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