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 79d7fa710a71453fed404b449e573f98ece6f2d3..54002d1a446b7f15039b51d036d3c2350a932bc6 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,