?? korg1212.c
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#endif down(&korg1212->open_mutex); if (--(korg1212->opencnt)) { up(&korg1212->open_mutex); return 0; } if (korg1212->cardState == K1212_STATE_SETUP) { rc = snd_korg1212_Send1212Command(korg1212, K1212_DB_SelectPlayMode, K1212_MODE_StopPlay, 0, 0, 0);#if K1212_DEBUG_LEVEL > 0 if (rc) K1212_DEBUG_PRINTK("K1212_DEBUG: CloseCard - RC = %d [%s]\n", rc, stateName[korg1212->cardState]);#endif if (rc != K1212_CMDRET_Success) { up(&korg1212->open_mutex); return 0; } } else if (korg1212->cardState > K1212_STATE_SETUP) { snd_korg1212_SendStopAndWait(korg1212); } if (korg1212->cardState > K1212_STATE_READY) { snd_korg1212_TurnOnIdleMonitor(korg1212); snd_korg1212_setCardState(korg1212, K1212_STATE_READY); } up(&korg1212->open_mutex); return 0;}/* spinlock already held */static int snd_korg1212_SetupForPlay(korg1212_t * korg1212){#if K1212_DEBUG_LEVEL > 0 K1212_DEBUG_PRINTK("K1212_DEBUG: SetupForPlay [%s] %d\n", stateName[korg1212->cardState], korg1212->setcnt);#endif if (korg1212->setcnt++) return 0; snd_korg1212_setCardState(korg1212, K1212_STATE_SETUP); rc = snd_korg1212_Send1212Command(korg1212, K1212_DB_SelectPlayMode, K1212_MODE_SetupPlay, 0, 0, 0);#if K1212_DEBUG_LEVEL > 0 if (rc) K1212_DEBUG_PRINTK("K1212_DEBUG: SetupForPlay - RC = %d [%s]\n", rc, stateName[korg1212->cardState]);#endif if (rc != K1212_CMDRET_Success) { return 1; } return 0;}/* spinlock already held */static int snd_korg1212_TriggerPlay(korg1212_t * korg1212){#if K1212_DEBUG_LEVEL > 0 K1212_DEBUG_PRINTK("K1212_DEBUG: TriggerPlay [%s] %d\n", stateName[korg1212->cardState], korg1212->playcnt);#endif if (korg1212->playcnt++) return 0; snd_korg1212_setCardState(korg1212, K1212_STATE_PLAYING); rc = snd_korg1212_Send1212Command(korg1212, K1212_DB_TriggerPlay, 0, 0, 0, 0);#if K1212_DEBUG_LEVEL > 0 if (rc) K1212_DEBUG_PRINTK("K1212_DEBUG: TriggerPlay - RC = %d [%s]\n", rc, stateName[korg1212->cardState]);#endif if (rc != K1212_CMDRET_Success) { return 1; } return 0;}/* spinlock already held */static int snd_korg1212_StopPlay(korg1212_t * korg1212){#if K1212_DEBUG_LEVEL > 0 K1212_DEBUG_PRINTK("K1212_DEBUG: StopPlay [%s] %d\n", stateName[korg1212->cardState], korg1212->playcnt);#endif if (--(korg1212->playcnt)) return 0; korg1212->setcnt = 0; if (korg1212->cardState != K1212_STATE_ERRORSTOP) snd_korg1212_SendStop(korg1212); snd_korg1212_setCardState(korg1212, K1212_STATE_OPEN); return 0;}static void snd_korg1212_EnableCardInterrupts(korg1212_t * korg1212){ writel(PCI_INT_ENABLE_BIT | PCI_DOORBELL_INT_ENABLE_BIT | LOCAL_INT_ENABLE_BIT | LOCAL_DOORBELL_INT_ENABLE_BIT | LOCAL_DMA1_INT_ENABLE_BIT, korg1212->statusRegPtr);}#if 0 /* not used */static int snd_korg1212_SetMonitorMode(korg1212_t *korg1212, MonitorModeSelector mode){#if K1212_DEBUG_LEVEL > 0 K1212_DEBUG_PRINTK("K1212_DEBUG: SetMonitorMode [%s]\n", stateName[korg1212->cardState]);#endif switch (mode) { case K1212_MONMODE_Off: if (korg1212->cardState != K1212_STATE_MONITOR) { return 0; } else { snd_korg1212_SendStopAndWait(korg1212); snd_korg1212_setCardState(korg1212, K1212_STATE_OPEN); } break; case K1212_MONMODE_On: if (korg1212->cardState != K1212_STATE_OPEN) { return 0; } else { snd_korg1212_setCardState(korg1212, K1212_STATE_MONITOR); rc = snd_korg1212_Send1212Command(korg1212, K1212_DB_SelectPlayMode, K1212_MODE_MonitorOn, 0, 0, 0); if (rc != K1212_CMDRET_Success) { return 0; } } break; default: return 0; } return 1;}#endif /* not used */static inline int snd_korg1212_use_is_exclusive(korg1212_t *korg1212){ int ret = 1; if ((korg1212->playback_pid != korg1212->capture_pid) && (korg1212->playback_pid >= 0) && (korg1212->capture_pid >= 0)) { ret = 0; } return ret;}static int snd_korg1212_SetRate(korg1212_t *korg1212, int rate){ static ClockSourceIndex s44[] = { K1212_CLKIDX_AdatAt44_1K, K1212_CLKIDX_WordAt44_1K, K1212_CLKIDX_LocalAt44_1K }; static ClockSourceIndex s48[] = { K1212_CLKIDX_AdatAt48K, K1212_CLKIDX_WordAt48K, K1212_CLKIDX_LocalAt48K }; int parm; if (!snd_korg1212_use_is_exclusive (korg1212)) { return -EBUSY; } switch(rate) { case 44100: parm = s44[korg1212->clkSource]; break; case 48000: parm = s48[korg1212->clkSource]; break; default: return -EINVAL; } korg1212->clkSrcRate = parm; korg1212->clkRate = rate; udelay(INTERCOMMAND_DELAY); rc = snd_korg1212_Send1212Command(korg1212, K1212_DB_SetClockSourceRate, ClockSourceSelector[korg1212->clkSrcRate], 0, 0, 0);#if K1212_DEBUG_LEVEL > 0 if (rc) K1212_DEBUG_PRINTK("K1212_DEBUG: Set Clock Source Selector - RC = %d [%s]\n", rc, stateName[korg1212->cardState]);#endif return 0;}static int snd_korg1212_SetClockSource(korg1212_t *korg1212, int source){ if (source<0 || source >2) return -EINVAL; korg1212->clkSource = source; snd_korg1212_SetRate(korg1212, korg1212->clkRate); return 0;}static void snd_korg1212_DisableCardInterrupts(korg1212_t *korg1212){ writel(0, korg1212->statusRegPtr);}static int snd_korg1212_WriteADCSensitivity(korg1212_t *korg1212){ SensBits sensVals; int bitPosition; int channel; int clkIs48K; int monModeSet; u16 controlValue; // this keeps the current value to be written to // the card's eeprom control register. u16 count; unsigned long flags;#if K1212_DEBUG_LEVEL > 0 K1212_DEBUG_PRINTK("K1212_DEBUG: WriteADCSensivity [%s]\n", stateName[korg1212->cardState]);#endif // ---------------------------------------------------------------------------- // initialize things. The local init bit is always set when writing to the // card's control register. // ---------------------------------------------------------------------------- controlValue = 0; SetBitInWord(&controlValue, SET_SENS_LOCALINIT_BITPOS); // init the control value // ---------------------------------------------------------------------------- // make sure the card is not in monitor mode when we do this update. // ---------------------------------------------------------------------------- if (korg1212->cardState == K1212_STATE_MONITOR || korg1212->idleMonitorOn) { monModeSet = 1; snd_korg1212_SendStopAndWait(korg1212); } else monModeSet = 0; spin_lock_irqsave(&korg1212->lock, flags); // ---------------------------------------------------------------------------- // we are about to send new values to the card, so clear the new values queued // flag. Also, clear out mailbox 3, so we don't lockup. // ---------------------------------------------------------------------------- writel(0, korg1212->mailbox3Ptr); udelay(LOADSHIFT_DELAY); // ---------------------------------------------------------------------------- // determine whether we are running a 48K or 44.1K clock. This info is used // later when setting the SPDIF FF after the volume has been shifted in. // ---------------------------------------------------------------------------- switch (korg1212->clkSrcRate) { case K1212_CLKIDX_AdatAt44_1K: case K1212_CLKIDX_WordAt44_1K: case K1212_CLKIDX_LocalAt44_1K: clkIs48K = 0; break; case K1212_CLKIDX_WordAt48K: case K1212_CLKIDX_AdatAt48K: case K1212_CLKIDX_LocalAt48K: default: clkIs48K = 1; break; } // ---------------------------------------------------------------------------- // start the update. Setup the bit structure and then shift the bits. // ---------------------------------------------------------------------------- sensVals.l.v.leftChanId = SET_SENS_LEFTCHANID; sensVals.r.v.rightChanId = SET_SENS_RIGHTCHANID; sensVals.l.v.leftChanVal = korg1212->leftADCInSens; sensVals.r.v.rightChanVal = korg1212->rightADCInSens; // ---------------------------------------------------------------------------- // now start shifting the bits in. Start with the left channel then the right. // ---------------------------------------------------------------------------- for (channel = 0; channel < 2; channel++) { // ---------------------------------------------------------------------------- // Bring the load/shift line low, then wait - the spec says >150ns from load/ // shift low to the first rising edge of the clock. // ---------------------------------------------------------------------------- ClearBitInWord(&controlValue, SET_SENS_LOADSHIFT_BITPOS); ClearBitInWord(&controlValue, SET_SENS_DATA_BITPOS); writew(controlValue, korg1212->sensRegPtr); // load/shift goes low udelay(LOADSHIFT_DELAY); for (bitPosition = 15; bitPosition >= 0; bitPosition--) { // for all the bits if (channel == 0) { if (sensVals.l.leftSensBits & (0x0001 << bitPosition)) { SetBitInWord(&controlValue, SET_SENS_DATA_BITPOS); // data bit set high } else { ClearBitInWord(&controlValue, SET_SENS_DATA_BITPOS); // data bit set low } } else { if (sensVals.r.rightSensBits & (0x0001 << bitPosition)) { SetBitInWord(&controlValue, SET_SENS_DATA_BITPOS); // data bit set high } else { ClearBitInWord(&controlValue, SET_SENS_DATA_BITPOS); // data bit set low } } ClearBitInWord(&controlValue, SET_SENS_CLOCK_BITPOS); writew(controlValue, korg1212->sensRegPtr); // clock goes low udelay(SENSCLKPULSE_WIDTH); SetBitInWord(&controlValue, SET_SENS_CLOCK_BITPOS); writew(controlValue, korg1212->sensRegPtr); // clock goes high udelay(SENSCLKPULSE_WIDTH); } // ---------------------------------------------------------------------------- // finish up SPDIF for left. Bring the load/shift line high, then write a one // bit if the clock rate is 48K otherwise write 0. // ---------------------------------------------------------------------------- ClearBitInWord(&controlValue, SET_SENS_DATA_BITPOS); ClearBitInWord(&controlValue, SET_SENS_CLOCK_BITPOS); SetBitInWord(&controlValue, SET_SENS_LOADSHIFT_BITPOS); writew(controlValue, korg1212->sensRegPtr); // load shift goes high - clk low udelay(SENSCLKPULSE_WIDTH); if (clkIs48K) SetBitInWord(&controlValue, SET_SENS_DATA_BITPOS); writew(controlValue, korg1212->sensRegPtr); // set/clear data bit udelay(ONE_RTC_TICK); SetBitInWord(&controlValue, SET_SENS_CLOCK_BITPOS); writew(controlValue, korg1212->sensRegPtr); // clock goes high udelay(SENSCLKPULSE_WIDTH); ClearBitInWord(&controlValue, SET_SENS_CLOCK_BITPOS); writew(controlValue, korg1212->sensRegPtr); // clock goes low udelay(SENSCLKPULSE_WIDTH); } // ---------------------------------------------------------------------------- // The update is complete. Set a timeout. This is the inter-update delay. // Also, if the card was in monitor mode, restore it. // ---------------------------------------------------------------------------- for (count = 0; count < 10; count++) udelay(SENSCLKPULSE_WIDTH);?? 快捷鍵說明
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