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84 lines
1.7 KiB
Bash
84 lines
1.7 KiB
Bash
#!/bin/sh /etc/rc.common
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# Copyright (C) 2008 OpenWrt.org
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START=90
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CONFIGFS_DIR="/config/gpiommc"
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# add_device(name, DI_pin, DO_pin, CLK_pin, CS_pin, mode)
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add_device() {
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local dir="$CONFIGFS_DIR/$1"
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mkdir -p $dir
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[ $? -eq 0 ] || return 1
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echo $2 > $dir/gpio_data_in
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[ $? -eq 0 ] || return 1
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echo $3 > $dir/gpio_data_out
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[ $? -eq 0 ] || return 1
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echo $4 > $dir/gpio_clock
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[ $? -eq 0 ] || return 1
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echo $5 > $dir/gpio_chipselect
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[ $? -eq 0 ] || return 1
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echo $6 > $dir/spi_mode
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[ $? -eq 0 ] || return 1
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# XXX We have more config options available. Use defaults for now.
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echo 1 > $dir/register
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[ $? -eq 0 ] || return 1
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return 0
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}
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# remove_device(name)
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remove_device() {
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local dir="$CONFIGFS_DIR/$1"
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rmdir $dir
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}
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mount_configfs() {
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# FIXME: This should probably be done somewhere else.
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mount | grep configfs
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if [ $? -eq 0 ]; then
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# already mounted
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return 0
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fi
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mkdir -p /config
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[ $? -eq 0 ] || return 1
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mount configfs -t configfs /config
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[ $? -eq 0 ] || return 1
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return 0
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}
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start_service() {
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local section="$1"
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config_get "name" "$section" "name"
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config_get "DI_pin" "$section" "DI_pin"
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config_get "DO_pin" "$section" "DO_pin"
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config_get "CLK_pin" "$section" "CLK_pin"
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config_get "CS_pin" "$section" "CS_pin"
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config_get "mode" "$section" "mode"
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config_get_bool "enabled" "$section" "enabled" '1'
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[ "$enabled" -gt 0 ] && add_device "$name" $DI_pin $DO_pin $CLK_pin $CS_pin $mode &
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}
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stop_service() {
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local section="$1"
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config_get "name" "$section" "name"
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remove_device "$name"
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}
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start() {
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# Make sure configfs is mounted
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mount_configfs
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[ $? -eq 0 ] || return 1
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config_load "mmc_over_gpio"
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config_foreach start_service "mmc_over_gpio"
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}
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stop() {
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config_load "mmc_over_gpio"
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config_foreach stop_service "mmc_over_gpio"
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}
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