From 3c3b84fd87a604afecb159b7ecd614bfe88eb675 Mon Sep 17 00:00:00 2001 From: Robert Marko Date: Fri, 17 Sep 2021 12:27:44 +0200 Subject: [PATCH] kernel: 5.10: backport fix for lp55xx LED driver This backports the upstream commit: leds: lp55xx: Initialize enable GPIO direction to output Without it under kernel 5.10 on Asus MAP-AC2200 the LED driver will fail probing: [ 1.947521] lp5523x: probe of 0-0032 failed with error -22 After the backported fix: [ 1.873236] lp5523x 0-0032: lp5523 Programmable led chip found Signed-off-by: Robert Marko Tested-by: Szabolcs Hubai [ipq4029/gl-b1300] Tested-by: Nick Hainke [ipq4019/fritzbox-7530 ipq4019/fritzbox-4040 ipq4019/sxtsq-5ac] Tested-by: Stefan Lippers-Hollmann [ipq4019/map-ac2200] --- ...ialize-enable-GPIO-direction-to-outp.patch | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 target/linux/generic/backport-5.10/830-v5.14-leds-lp55xx-Initialize-enable-GPIO-direction-to-outp.patch diff --git a/target/linux/generic/backport-5.10/830-v5.14-leds-lp55xx-Initialize-enable-GPIO-direction-to-outp.patch b/target/linux/generic/backport-5.10/830-v5.14-leds-lp55xx-Initialize-enable-GPIO-direction-to-outp.patch new file mode 100644 index 0000000000..75b9947392 --- /dev/null +++ b/target/linux/generic/backport-5.10/830-v5.14-leds-lp55xx-Initialize-enable-GPIO-direction-to-outp.patch @@ -0,0 +1,28 @@ +From a5d3d1adc95f4ac5968b7a77ee95a3abbbb96f49 Mon Sep 17 00:00:00 2001 +From: Doug Zobel +Date: Mon, 10 May 2021 15:40:00 -0500 +Subject: [PATCH] leds: lp55xx: Initialize enable GPIO direction to output + +The "Convert to use GPIO descriptors" commit changed the +initialization of the enable GPIO from GPIOF_DIR_OUT to +GPIOD_ASIS. This breaks systems where the GPIO does not +default to output. Changing the enable initialization +to GPIOD_OUT_LOW. + +Signed-off-by: Doug Zobel +Signed-off-by: Pavel Machek +--- + drivers/leds/leds-lp55xx-common.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/leds/leds-lp55xx-common.c ++++ b/drivers/leds/leds-lp55xx-common.c +@@ -694,7 +694,7 @@ struct lp55xx_platform_data *lp55xx_of_p + of_property_read_u8(np, "clock-mode", &pdata->clock_mode); + + pdata->enable_gpiod = devm_gpiod_get_optional(dev, "enable", +- GPIOD_ASIS); ++ GPIOD_OUT_LOW); + if (IS_ERR(pdata->enable_gpiod)) + return ERR_CAST(pdata->enable_gpiod); + -- 2.30.2