patch "iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR" added to staging-testing

[<gregkh@xxxxxxxxxxxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR

to my staging git tree which can be found at
    git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-testing branch.

The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)

The patch will be merged to the staging-next branch sometime soon,
after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.


>From 421a26f3d7a7c3ca43f3a9dc0f3cb0f562d5bd95 Mon Sep 17 00:00:00 2001
From: Oliver Lang <Oliver.Lang@xxxxxxxxxxxxxxxxxxx>
Date: Thu, 10 Jun 2021 15:46:17 +0200
Subject: iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR

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@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Tested-by: Nikita Travkin <nikita@xxxxxxx> # ltr559
Link: https://lore.kernel.org/r/20210610134619.2101372-3-mkl@xxxxxxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
---
 drivers/iio/light/ltr501.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 0ed3392a33cf..79898b72fe73 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -1208,7 +1208,7 @@ static struct ltr501_chip_info ltr501_chip_info_tbl[] = {
 		.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 = &ltr501_info,
-- 
2.32.0