Chip detection may fail if the chip is in some odd state
for example after system restart. Chip doesn't have
HW reset line.
Signed-off-by: Samu Onkalo <samu.p.onkalo@xxxxxxxxx>
---
drivers/leds/leds-lp5521.c | 12 +++++-------
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 963c014..33facd0 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -245,13 +245,6 @@ static int lp5521_configure(struct i2c_client *client,
lp5521_init_engine(chip, attr_group);
- lp5521_write(client, LP5521_REG_RESET, 0xff);
-
- usleep_range(10000, 20000); /*
- * Exact value is not available. 10 - 20ms
- * appears to be enough for reset.
- */
-
/* Set all PWMs to direct control mode */
ret = lp5521_write(client, LP5521_REG_OP_MODE, 0x3F);
@@ -716,6 +709,11 @@ static int lp5521_probe(struct i2c_client *client,
usleep_range(1000, 2000); /* 500us abs min. */
}
+ lp5521_write(client, LP5521_REG_RESET, 0xff);
+ usleep_range(10000, 20000); /*
+ * Exact value is not available. 10 - 20ms
+ * appears to be enough for reset.
+ */
ret = lp5521_detect(client);
if (ret) {
--
1.6.0.4
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