1
0
2017-02-01 13:53:54 -08:00

59 lines
1.5 KiB
Scala

// See LICENSE for license details.
package sifive.blocks.devices.pwm
import Chisel._
import config._
import diplomacy.LazyModule
import rocketchip.{TopNetwork,TopNetworkModule}
import uncore.tilelink2.TLFragmenter
import sifive.blocks.devices.gpio._
class PWMPortIO(c: PWMBundleConfig)(implicit p: Parameters) extends Bundle {
val port = Vec(c.ncmp, Bool()).asOutput
override def cloneType: this.type = new PWMPortIO(c).asInstanceOf[this.type]
}
class PWMPinsIO(c: PWMBundleConfig)(implicit p: Parameters) extends Bundle {
val pwm = Vec(c.ncmp, new GPIOPin)
}
class PWMGPIOPort(c: PWMBundleConfig)(implicit p: Parameters) extends Module {
val io = new Bundle {
val pwm = new PWMPortIO(c).flip()
val pins = new PWMPinsIO(c)
}
GPIOOutputPinCtrl(io.pins.pwm, io.pwm.port.asUInt)
}
trait PeripheryPWM {
this: TopNetwork { val pwmConfigs: Seq[PWMConfig] } =>
val pwm = (pwmConfigs.zipWithIndex) map { case (c, i) =>
val pwm = LazyModule(new TLPWM(c))
pwm.node := TLFragmenter(peripheryBusConfig.beatBytes, cacheBlockBytes)(peripheryBus.node)
intBus.intnode := pwm.intnode
pwm
}
}
trait PeripheryPWMBundle {
this: {
val p: Parameters
val pwmConfigs: Seq[PWMConfig]
} =>
val pwm_bc = pwmConfigs.map(_.bc).reduce(_.union(_))
val pwms = Vec(pwmConfigs.size, new PWMPortIO(pwm_bc)(p))
}
trait PeripheryPWMModule {
this: TopNetworkModule {
val outer: PeripheryPWM
val io: PeripheryPWMBundle
} =>
(io.pwms.zipWithIndex zip outer.pwm) foreach { case ((io, i), device) =>
io.port := device.module.io.gpio
}
}