src/main/scala/devices/gpio/GPIOPeriphery.scala

   1 // See LICENSE for license details.
   2 package sifive.blocks.devices.gpio
   3
   4 import Chisel._
   5 import config.Field
   6 import diplomacy.LazyModule
   7 import rocketchip.{
   8   HasTopLevelNetworks,
   9   HasTopLevelNetworksBundle,
  10   HasTopLevelNetworksModule
  11 }
  12 import uncore.tilelink2.TLFragmenter
  13
  14 case object PeripheryGPIOKey extends Field[Seq[GPIOParams]]
  15
  16 trait HasPeripheryGPIO extends HasTopLevelNetworks {
  17   val gpioParams = p(PeripheryGPIOKey)
  18   val gpio = gpioParams map {params =>
  19     val gpio = LazyModule(new TLGPIO(peripheryBusBytes, params))
  20     gpio.node := TLFragmenter(peripheryBusBytes, cacheBlockBytes)(peripheryBus.node)
  21     intBus.intnode := gpio.intnode
  22     gpio
  23   }
  24 }
  25
  26 trait HasPeripheryGPIOBundle extends HasTopLevelNetworksBundle {
  27   val outer: HasPeripheryGPIO
  28   val gpio = HeterogeneousBag(outer.gpioParams(map(new GPIOPortIO(_))))
  29 }
  30
  31 trait HasPeripheryGPIOModule extends HasTopLevelNetworksModule {
  32   val outer: HasPeripheryGPIO
  33   val io: HasPeripheryGPIOBundle
  34   (io.gpio zip outer.gpio) foreach { case (io, device) =>
  35     io.gpio <> device.module.io.port
  36   }
  37 }