src/main/scala/devices/i2c/I2CPeriphery.scala

   1 // See LICENSE for license details.
   2 package sifive.blocks.devices.i2c
   3
   4 import Chisel._
   5 import diplomacy.LazyModule
   6 import rocketchip.{TopNetwork,TopNetworkModule}
   7 import uncore.tilelink2.TLFragmenter
   8
   9 trait PeripheryI2C {
  10   this: TopNetwork { val i2cConfigs: Seq[I2CConfig] } =>
  11   val i2cDevices = i2cConfigs.zipWithIndex.map { case (c, i) =>
  12     val i2c = LazyModule(new TLI2C(c))
  13     i2c.suggestName(s"i2c$i")
  14     i2c.node := TLFragmenter(peripheryBusConfig.beatBytes, cacheBlockBytes)(peripheryBus.node)
  15     intBus.intnode := i2c.intnode
  16     i2c
  17   }
  18 }
  19
  20 trait PeripheryI2CBundle {
  21   this: { val i2cConfigs: Seq[I2CConfig] } =>
  22   val i2cs = Vec(i2cConfigs.size, new I2CPort)
  23 }
  24
  25 trait PeripheryI2CModule {
  26   this: TopNetworkModule {
  27     val i2cConfigs: Seq[I2CConfig]
  28     val outer: PeripheryI2C
  29     val io: PeripheryI2CBundle
  30   } =>
  31   (io.i2cs zip outer.i2cDevices).foreach { case (io, device) =>
  32     io <> device.module.io.port
  33   }
  34 }