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Message-Id: <20210712060851.388322548@linuxfoundation.org>
Date: Mon, 12 Jul 2021 08:03:55 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Oliver Lang <Oliver.Lang@...senmetrawatt.com>,
Andy Shevchenko <andy.shevchenko@...il.com>,
Marc Kleine-Budde <mkl@...gutronix.de>, Stable@...r.kernel.org,
Jonathan Cameron <Jonathan.Cameron@...wei.com>,
Nikita Travkin <nikita@...n.ru>
Subject: [PATCH 5.10 075/593] iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR
From: Oliver Lang <Oliver.Lang@...senmetrawatt.com>
commit 421a26f3d7a7c3ca43f3a9dc0f3cb0f562d5bd95 upstream.
The ltr559 chip uses only the lowest bit of the ALS_CONTR register to
configure between active and stand-by mode. In the original driver
BIT(1) is used, which does a software reset instead.
This patch fixes the problem by using BIT(0) as als_mode_active for
the ltr559 chip.
Fixes: 8592a7eefa54 ("iio: ltr501: Add support for ltr559 chip")
Signed-off-by: Oliver Lang <Oliver.Lang@...senmetrawatt.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
Tested-by: Nikita Travkin <nikita@...n.ru> # ltr559
Link: https://lore.kernel.org/r/20210610134619.2101372-3-mkl@pengutronix.de
Cc: <Stable@...r.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/iio/light/ltr501.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -1208,7 +1208,7 @@ static struct ltr501_chip_info ltr501_ch
.als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl),
.ps_gain = ltr559_ps_gain_tbl,
.ps_gain_tbl_size = ARRAY_SIZE(ltr559_ps_gain_tbl),
- .als_mode_active = BIT(1),
+ .als_mode_active = BIT(0),
.als_gain_mask = BIT(2) | BIT(3) | BIT(4),
.als_gain_shift = 2,
.info = <r501_info,
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