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 17eb84ab4c0b7813dcfe394023d16cc218c18953..fe3fbde989be281a8f85cdb09976a8193b6aceb7 100644 (file)
--- a/drivers/input/misc/drv260x.c
+++ b/drivers/input/misc/drv260x.c
@@ -443,6 +443,7 @@ 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,