summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorOleksandr Suvorov <oleksandr.suvorov@toradex.com>2020-08-06 16:41:31 +0300
committerOleksandr Suvorov <oleksandr.suvorov@toradex.com>2020-08-10 13:13:30 +0300
commit29191ec028148f41eab3f2ccb143bcede9e8224e (patch)
treeba43e03d3585c7545c48131a7faa074d7fd2fabb
parent6ba70eb580167611f8a5b061a9552eba25b34d6c (diff)
verdin-imx8m: udev: add symlink to adc raw data
Create symlinks for each supported by Verdin iMX8M Mini ADC channels, standardizing names as verdin-adcX, according to the Verdin signal names table. Related-to: ELB-2839 Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
-rw-r--r--recipes-core/udev/files/verdin-imx8mm/99-toradex.rules1
-rwxr-xr-xrecipes-core/udev/files/verdin-imx8mm/toradex-adc.sh21
2 files changed, 22 insertions, 0 deletions
diff --git a/recipes-core/udev/files/verdin-imx8mm/99-toradex.rules b/recipes-core/udev/files/verdin-imx8mm/99-toradex.rules
index 736d9d8..2885e16 100644
--- a/recipes-core/udev/files/verdin-imx8mm/99-toradex.rules
+++ b/recipes-core/udev/files/verdin-imx8mm/99-toradex.rules
@@ -10,3 +10,4 @@ ACTION=="add", SUBSYSTEM=="spidev", KERNELS=="30830000.ecspi", SYMLINK+="verdin-
KERNEL=="mmcblk[0-9]", ENV{DEVTYPE}=="disk", KERNELS=="30b40000.mmc", SYMLINK+="emmc"
KERNEL=="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", KERNELS=="30b40000.mmc", SYMLINK+="emmc-boot%n"
KERNEL=="mmcblk[0-9]p[0-9]", ENV{DEVTYPE}=="partition", KERNELS=="30b40000.mmc", SYMLINK+="emmc-part%n"
+SUBSYSTEM=="iio", KERNELS=="iio:device0", RUN+="/etc/udev/scripts/toradex-adc.sh"
diff --git a/recipes-core/udev/files/verdin-imx8mm/toradex-adc.sh b/recipes-core/udev/files/verdin-imx8mm/toradex-adc.sh
new file mode 100755
index 0000000..0f5f878
--- /dev/null
+++ b/recipes-core/udev/files/verdin-imx8mm/toradex-adc.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env sh
+#
+# Called from udev. Compatible to verdin-imx8mm.
+#
+# Create/remove symlinks to/from the files with raw adc data.
+
+# Map the ADC lines:
+# verdin-adc{1..4} -> MAX11607 ADC{0,1,2,3}
+
+if [ "$ACTION" = "add" ]; then
+ ln -s "/sys$DEVPATH/in_voltage0_raw" /dev/verdin-adc1
+ ln -s "/sys$DEVPATH/in_voltage1_raw" /dev/verdin-adc2
+ ln -s "/sys$DEVPATH/in_voltage2_raw" /dev/verdin-adc3
+ ln -s "/sys$DEVPATH/in_voltage3_raw" /dev/verdin-adc4
+elif [ "$ACTION" = "remove" ]; then
+ rm -f /dev/verdin-adc1
+ rm -f /dev/verdin-adc2
+ rm -f /dev/verdin-adc3
+ rm -f /dev/verdin-adc4
+fi
+