go-embedded/embd
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spi: got rid of shouldInitialize arg in spibus (redundant).

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This commit is contained in:
kunalpowar 2014-05-22 01:21:09 +05:30
parent f80e6f624d
commit 454eca42d0
4 changed files with 23 additions and 31 deletions
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2
host/bbb/bbb.go
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@ -180,7 +180,7 @@ func init() {
return embd.NewLEDDriver(ledMap, generic.NewLED) return embd.NewLEDDriver(ledMap, generic.NewLED)
}, },
SPIDriver: func() embd.SPIDriver { SPIDriver: func() embd.SPIDriver {
return embd.NewSPIDriver(spiDeviceMinor, generic.NewSPIBus, true, spiInitializer) return embd.NewSPIDriver(spiDeviceMinor, generic.NewSPIBus, spiInitializer)
}, },
} }
}) })

32
host/generic/spibus.go
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@ -54,24 +54,22 @@ type spiBus struct {
spiTransferData spiIOCTransfer spiTransferData spiIOCTransfer
initialized bool initialized bool
shouldInitialize bool initializer func() error
initializer func() error
} }
func spiIOCMessageN(n uint32) uint32 { func spiIOCMessageN(n uint32) uint32 {
return (spiIOCMessage0 + (n * spiIOCIncrementor)) return (spiIOCMessage0 + (n * spiIOCIncrementor))
} }
func NewSPIBus(spiDevMinor, mode, channel byte, speed, bpw, delay int, shouldInitialize bool, i func() error) embd.SPIBus { func NewSPIBus(spiDevMinor, mode, channel byte, speed, bpw, delay int, i func() error) embd.SPIBus {
return &spiBus{ return &spiBus{
spiDevMinor: spiDevMinor, spiDevMinor: spiDevMinor,
mode: mode, mode: mode,
channel: channel, channel: channel,
speed: speed, speed: speed,
bpw: bpw, bpw: bpw,
delayms: delay, delayms: delay,
shouldInitialize: shouldInitialize, initializer: i,
initializer: i,
} }
} }
@ -80,11 +78,10 @@ func (b *spiBus) init() error {
return nil return nil
} }
if b.shouldInitialize { if b.initializer != nil {
if err := b.initializer(); err != nil { if err := b.initializer(); err != nil {
return err return err
} }
b.shouldInitialize = false
} }
var err error var err error
@ -93,20 +90,17 @@ func (b *spiBus) init() error {
} }
glog.V(3).Infof("spi: sucessfully opened file /dev/spidev%v.%v", b.spiDevMinor, b.channel) glog.V(3).Infof("spi: sucessfully opened file /dev/spidev%v.%v", b.spiDevMinor, b.channel)
err = b.setMode() if err = b.setMode(); err != nil {
if err != nil {
return err return err
} }
b.spiTransferData = spiIOCTransfer{} b.spiTransferData = spiIOCTransfer{}
err = b.setSpeed() if err = b.setSpeed(); err != nil {
if err != nil {
return err return err
} }
err = b.setBPW() if err = b.setBPW(); err != nil {
if err != nil {
return err return err
} }

2
host/rpi/rpi.go
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@ -77,7 +77,7 @@ func init() {
return embd.NewLEDDriver(ledMap, generic.NewLED) return embd.NewLEDDriver(ledMap, generic.NewLED)
}, },
SPIDriver: func() embd.SPIDriver { SPIDriver: func() embd.SPIDriver {
return embd.NewSPIDriver(spiDeviceMinor, generic.NewSPIBus, false, nil) return embd.NewSPIDriver(spiDeviceMinor, generic.NewSPIBus, nil)
}, },
} }
}) })

18
spidriver.go
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@ -2,12 +2,11 @@ package embd
import "sync" import "sync"
type spiBusFactory func(byte, byte, byte, int, int, int, bool, func() error) SPIBus type spiBusFactory func(byte, byte, byte, int, int, int, func() error) SPIBus
type spiDriver struct { type spiDriver struct {
spiDevMinor byte spiDevMinor byte
shouldInitialize bool initializer func() error
initializer func() error
busMap map[byte]SPIBus busMap map[byte]SPIBus
busMapLock sync.Mutex busMapLock sync.Mutex
@ -15,12 +14,11 @@ type spiDriver struct {
sbf spiBusFactory sbf spiBusFactory
} }
func NewSPIDriver(spiDevMinor byte, sbf spiBusFactory, shouldInitialize bool, i func() error) SPIDriver { func NewSPIDriver(spiDevMinor byte, sbf spiBusFactory, i func() error) SPIDriver {
return &spiDriver{ return &spiDriver{
spiDevMinor: spiDevMinor, spiDevMinor: spiDevMinor,
sbf: sbf, sbf: sbf,
shouldInitialize: shouldInitialize, initializer: i,
initializer: i,
} }
} }
@ -28,7 +26,7 @@ func (s *spiDriver) Bus(mode, channel byte, speed, bpw, delay int) SPIBus {
s.busMapLock.Lock() s.busMapLock.Lock()
defer s.busMapLock.Unlock() defer s.busMapLock.Unlock()
b := s.sbf(s.spiDevMinor, mode, channel, speed, bpw, delay, s.shouldInitialize, s.initializer) b := s.sbf(s.spiDevMinor, mode, channel, speed, bpw, delay, s.initializer)
s.busMap = make(map[byte]SPIBus) s.busMap = make(map[byte]SPIBus)
s.busMap[channel] = b s.busMap[channel] = b
return b return b