You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.8 KiB
104 lines
2.8 KiB
#!/vendor/bin/sh
|
|
#
|
|
# edge_sense_init.sh [<power chip name>] [<power gpio number>]
|
|
#
|
|
# Initialize Edge Sense. If needed, power it up using the power controller chip
|
|
# specified by [<power chip name>] and power GPIO specified by
|
|
# [<power gpio number>].
|
|
#
|
|
# [<power chip name>] Name of chip (e.g., "pm8998") controlling Edge Sense
|
|
# power.
|
|
# [<power gpio number>] GPIO number controlling Edge Sens power (e.g., 2).
|
|
#
|
|
# [<power chip name>] and [<power gpio number>] default to values appropriate
|
|
# for the type and version of device.
|
|
#
|
|
# TODO: b/67205273
|
|
# The Edge Sense should only be powered up when it's in use.
|
|
# Ideally, this would be done in the Edge Sense SLPI driver, but it
|
|
# doesn't have direct access to the PM8998 GPIOs.
|
|
# As an alternative, the Elmyra Edge Sense sensor HAL driver could power
|
|
# up the Edge Sense or act as a GPIO proxy for the SLPI driver.
|
|
#
|
|
|
|
# Check for default values.
|
|
if [ "${#}" -eq 0 ]; then
|
|
use_defaults=1
|
|
else
|
|
use_defaults=0
|
|
fi
|
|
|
|
# Get the program name.
|
|
prog_name=$(basename ${0})
|
|
|
|
# Read the power chip name.
|
|
chip_name=${1}
|
|
|
|
# Read the power gpio number.
|
|
gpio_num=${2}
|
|
|
|
# Get the hardware platform and platform version.
|
|
hw_platform=`cat /sys/devices/soc0/hw_platform`
|
|
platform_version=`cat /sys/devices/soc0/platform_version`
|
|
|
|
# Set default values if using them.
|
|
if [ ${use_defaults} -ne 0 ]; then
|
|
chip_name=pm660@
|
|
gpio_num=3
|
|
fi
|
|
|
|
# Validate chip name and gpio number.
|
|
if [ -z ${chip_name} ]; then
|
|
log -t "${prog_name}" "Chip name not specified."
|
|
exit 1
|
|
fi
|
|
if [ -z ${gpio_num} ]; then
|
|
log -t "${prog_name}" "GPIO number not specified."
|
|
exit 1
|
|
fi
|
|
|
|
# Find the GPIO pin control device node for the power chip.
|
|
pinctrl=`find /sys/devices -name "*${chip_name}*pinctrl*"`
|
|
if [ -z ${pinctrl} ]; then
|
|
log -t "${prog_name}" "Power chip \"${chip_name}\" not found."
|
|
exit 1
|
|
fi
|
|
|
|
# Find the GPIO index within the chip GPIO interrupt name list. This will be
|
|
# the GPIO index offset from the chip GPIO index base.
|
|
found=0
|
|
gpio_name=gpio${gpio_num}
|
|
gpio_index_off=0
|
|
while IFS= read -d '' name; do
|
|
# Check for a match.
|
|
if [ "${name%${gpio_name}}" != "${name}" ]; then
|
|
found=1
|
|
break
|
|
fi
|
|
|
|
# Check next GPIO index.
|
|
gpio_index_off=$((${gpio_index_off} + 1))
|
|
done < ${pinctrl}/of_node/interrupt-names
|
|
if [ ${found} -eq 0 ]; then
|
|
log -t "${prog_name}" "GPIO ${gpio_num} on chip \"${chip_name}\" not found."
|
|
exit 1
|
|
fi
|
|
|
|
# Find the chip GPIO base index.
|
|
base_file=`find ${pinctrl} -name base`
|
|
gpio_index_base=`cat ${base_file}`
|
|
|
|
# Get the GPIO index.
|
|
gpio_index=$((${gpio_index_base} + ${gpio_index_off}))
|
|
|
|
# Export the GPIO.
|
|
echo ${gpio_index} > /sys/class/gpio/export
|
|
|
|
# Set the GPIO direction to out.
|
|
echo out > /sys/class/gpio/gpio${gpio_index}/direction
|
|
|
|
# Set the GPIO high.
|
|
echo 1 > /sys/class/gpio/gpio${gpio_index}/value
|
|
|
|
|