Initial commit

meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init.bb

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+SUMMARY = "Initialize PWM sensors"
+DESCRIPTION = "Initialize PWM sensors"
+LICENSE = "CLOSED"
+PR = "r1"
+
+inherit systemd
+
+DEPENDS = "systemd"
+RDEPENDS:${PN} = "bash"
+
+S = "${WORKDIR}"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+SRC_URI += " \
+    file://pwm_init.service \
+    file://bin/pwm_init.sh \
+    "
+
+SYSTEMD_PACKAGES = "${PN}"
+SYSTEMD_AUTO_ENABLE = "enable"
+SYSTEMD_SERVICE:${PN} += "pwm_init.service"
+
+FILES:${PN} += "${bindir}/* ${systemd_system_unitdir}/*"
+
+do_install:append() {
+    install -d ${D}${libexecdir}/${PN}
+    install -m 0755 ${S}/bin/* ${D}${libexecdir}/${PN}/
+    install -d ${D}${systemd_system_unitdir}
+    install -m 0644 ${S}/*.service ${D}${systemd_system_unitdir}
+}

meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/bin/pwm_init.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# Set all fans to pwm mode.
+
+# Provide source directive to shellcheck.
+# shellcheck source=meta-fii/meta-kudo/recipes-kudo/kudo-fw-utility/kudo-fw/kudo-lib.sh
+source /usr/libexec/kudo-fw/kudo-lib.sh
+
+# Set all pwm_enable to 1
+find /sys/class/hwmon/hwmon*/ -name 'pwm*_enable' -exec bash -c 'echo "$1" && echo 1 > "$1" && cat "$1"' -- {} \;
+
+for i in {0..5}
+do
+    fan_pwm_rate_of_change=0x$(printf '%02x' $((8 + i)) | \
+            awk '{print $1}')
+    # Set Fan PWM Rate-of-Change Bits(bits 4:2) to 000b
+    # Register 08h to 0Dh
+    oriRegVal=$(i2cget -y -f "${I2C_FANCTRL[0]}" 0x"${I2C_FANCTRL[1]}" \
+        "${fan_pwm_rate_of_change}")
+    updateVal=$((oriRegVal & 0xe3))
+    updateVal=0x$(printf "%x" ${updateVal})
+    i2cset -y -f "${I2C_FANCTRL[0]}" 0x"${I2C_FANCTRL[1]}" \
+        "${fan_pwm_rate_of_change}" "${updateVal}"
+done

meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/pwm_init.service

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+[Unit]
+Description=Init PWM sensors
+Before=xyz.openbmc_project.fansensor.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/libexec/pwm-init/pwm_init.sh
+
+[Install]
+WantedBy=multi-user.target
+WantedBy=xyz.openbmc_project.fansensor.service