From 6d49b06149a67450b8ff7ddc819426d13364a6ec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= Date: Tue, 8 Sep 2020 13:41:20 +0200 Subject: [PATCH 080/389] iio: core: Add option to force identity mount matrix This is just to make it simpler to create multi-boot image for pinephone. Signed-off-by: Ondrej Jirman --- drivers/iio/industrialio-core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 151ff3993354..dc02124a1bd0 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -33,6 +33,16 @@ #include #include +static int ignore_mount_matrix = 0; + +static int __init ignore_matrix(char *str) +{ + ignore_mount_matrix = 1; + return 1; +} + +__setup("ignore_mount_matrix", ignore_matrix); + /* IDA to assign each registered device a unique id */ static DEFINE_IDA(iio_ida); @@ -629,6 +639,7 @@ int iio_read_mount_matrix(struct device *dev, struct iio_mount_matrix *matrix) size_t len = ARRAY_SIZE(iio_mount_idmatrix.rotation); int err; + if (!ignore_mount_matrix) { err = device_property_read_string_array(dev, "mount-matrix", matrix->rotation, len); if (err == len) return 0; @@ -640,6 +651,7 @@ int iio_read_mount_matrix(struct device *dev, struct iio_mount_matrix *matrix) if (err != -EINVAL) /* Invalid matrix declaration format. */ return err; + } /* Matrix was not declared at all: fallback to identity. */ return iio_setup_mount_idmatrix(dev, matrix); -- 2.35.3