Input: drv260x - sleep between polling GO bit

When doing the initial startup there's no need to poll without any
delay and spam the I2C bus.

Let's sleep 15ms between each attempt, which is the same time as used
in the vendor driver.

Fixes: 7132fe4f5687 ("Input: drv260x - add TI drv260x haptics driver")
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Link: https://lore.kernel.org/r/20230430-drv260x-improvements-v1-2-1fb28b4cc698@z3ntu.xyz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
index e95c4e775b5d6e8958bebbbd3a8be471cce24052..884d43eb4b61f42b0d048dd0b58d498f3539e4be 100644 (file)
--- a/drivers/input/misc/drv260x.c
+++ b/drivers/input/misc/drv260x.c
@@ -435,6 +435,7 @@ static int drv260x_init(struct drv260x_data *haptics)
        }
 
        do {
+               usleep_range(15000, 15500);
                error = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf);
                if (error) {
                        dev_err(&haptics->client->dev,