Input: drv260x - sleep between polling GO bit

[ Upstream commit efef661dfa6bf8cbafe4cd6a97433fcef0118967 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
index 8a9ebfc04a2d95985363bbedf4fe9d868e4da06d..85371fa1a03ed67243550bab09c4e44e68a65331 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,