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 i2c = i2cConfigs.zipWithIndex.map { case (c, i) =>
  12     val i2c = LazyModule(new TLI2C(c))
  13     i2c.node := TLFragmenter(peripheryBusConfig.beatBytes, cacheBlockBytes)(peripheryBus.node)
  14     intBus.intnode := i2c.intnode
  15     i2c
  16   }
  17 }
  18
  19 trait PeripheryI2CBundle {
  20   this: { val i2cConfigs: Seq[I2CConfig] } =>
  21   val i2cs = Vec(i2cConfigs.size, new I2CPort)
  22 }
  23
  24 trait PeripheryI2CModule {
  25   this: TopNetworkModule {
  26     val i2cConfigs: Seq[I2CConfig]
  27     val outer: PeripheryI2C
  28     val io: PeripheryI2CBundle
  29   } =>
  30   (io.i2cs zip outer.i2c).foreach { case (io, device) =>
  31     io <> device.module.io.port
  32   }
  33 }