From 8a5afd29dc16a9e687f63195cb635ecd611482d0 Mon Sep 17 00:00:00 2001 From: James Courtier-Dutton Date: Thu, 20 Oct 2005 22:57:51 +0200 Subject: [ALSA] snd-ca0106: Add midi support. Modules: PCI drivers,CA0106 driver Author: Tilman Kranz Signed-off-by: James Courtier-Dutton --- sound/pci/ca0106/ca0106_main.c | 111 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) (limited to 'sound/pci/ca0106/ca0106_main.c') diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c index f6920ef5b4e..aaaef9e66af 100644 --- a/sound/pci/ca0106/ca0106_main.c +++ b/sound/pci/ca0106/ca0106_main.c @@ -338,6 +338,18 @@ static void snd_ca0106_intr_enable(ca0106_t *emu, unsigned int intrenb) spin_unlock_irqrestore(&emu->emu_lock, flags); } +static void snd_ca0106_intr_disable(ca0106_t *emu, unsigned int intrenb) +{ + unsigned long flags; + unsigned int enable; + + spin_lock_irqsave(&emu->emu_lock, flags); + enable = inl(emu->port + INTE) & ~intrenb; + outl(enable, emu->port + INTE); + spin_unlock_irqrestore(&emu->emu_lock, flags); +} + + static void snd_ca0106_pcm_free_substream(snd_pcm_runtime_t *runtime) { kfree(runtime->private_data); @@ -1040,6 +1052,15 @@ static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id, snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76); spin_lock(&chip->emu_lock); + + if (chip->midi.dev_id && + (status & (chip->midi.ipr_tx|chip->midi.ipr_rx))) { + if (chip->midi.interrupt) + chip->midi.interrupt(&chip->midi, status); + else + chip->midi.interrupt_disable(&chip->midi, chip->midi.tx_enable | chip->midi.rx_enable); + } + // acknowledge the interrupt if necessary outl(status, chip->port+IPR); @@ -1309,6 +1330,82 @@ static int __devinit snd_ca0106_create(snd_card_t *card, return 0; } + +void ca0106_midi_interrupt_enable(ca_midi_t *midi, int intr){ + snd_ca0106_intr_enable((ca0106_t *)(midi->dev_id), intr); +} + +void ca0106_midi_interrupt_disable(ca_midi_t *midi, int intr){ + snd_ca0106_intr_disable((ca0106_t *)(midi->dev_id), intr); +} + +unsigned char ca0106_midi_read(ca_midi_t *midi, int idx){ + return (unsigned char)snd_ca0106_ptr_read((ca0106_t *)(midi->dev_id), midi->port + idx, 0); +} + +void ca0106_midi_write(ca_midi_t *midi, int data, int idx){ + snd_ca0106_ptr_write((ca0106_t *)(midi->dev_id), midi->port + idx, 0, data); +} + +snd_card_t *ca0106_dev_id_card(void *dev_id){ + return ((ca0106_t *)dev_id)->card; +} + +int ca0106_dev_id_port(void *dev_id){ + return ((ca0106_t *)dev_id)->port; +} + +static int __devinit snd_ca0106_midi(ca0106_t *chip, unsigned int channel) +{ + ca_midi_t *midi; + char *name; + int err; + + if(channel==CA0106_MIDI_CHAN_B) { + name = "CA0106 MPU-401 (UART) B"; + midi = &chip->midi2; + midi->tx_enable = INTE_MIDI_TX_B; + midi->rx_enable = INTE_MIDI_RX_B; + midi->ipr_tx = IPR_MIDI_TX_B; + midi->ipr_rx = IPR_MIDI_RX_B; + midi->port = MIDI_UART_B_DATA; + } else { + name = "CA0106 MPU-401 (UART)"; + midi = &chip->midi; + midi->tx_enable = INTE_MIDI_TX_A; + midi->rx_enable = INTE_MIDI_TX_B; + midi->ipr_tx = IPR_MIDI_TX_A; + midi->ipr_rx = IPR_MIDI_RX_A; + midi->port = MIDI_UART_A_DATA; + } + + midi->reset = CA0106_MPU401_RESET; + midi->enter_uart = CA0106_MPU401_ENTER_UART; + midi->ack = CA0106_MPU401_ACK; + + midi->input_avail = CA0106_MIDI_INPUT_AVAIL; + midi->output_ready = CA0106_MIDI_OUTPUT_READY; + + midi->channel = channel; + + midi->interrupt_enable = ca0106_midi_interrupt_enable; + midi->interrupt_disable = ca0106_midi_interrupt_disable; + + midi->read = ca0106_midi_read; + midi->write = ca0106_midi_write; + + midi->get_dev_id_card = ca0106_dev_id_card; + midi->get_dev_id_port = ca0106_dev_id_port; + + midi->dev_id = chip; + + if ((err = ca_midi_init(chip, midi, 0, name)) < 0) + return err; + + return 0; +} + + static int __devinit snd_ca0106_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { @@ -1360,6 +1457,20 @@ static int __devinit snd_ca0106_probe(struct pci_dev *pci, return err; } +#ifdef CONFIG_SND_DEBUG_DETECT + printk("ca0106: probe for MIDI channel A ..."); +#endif + if ((err = snd_ca0106_midi(chip,CA0106_MIDI_CHAN_A)) < 0) { + snd_card_free(card); +#ifdef CONFIG_SND_DEBUG_DETECT + printk(" failed, err=0x%x\n",err); +#endif + return err; + } +#ifdef CONFIG_SND_DEBUG_DETECT + printk(" done.\n"); +#endif + snd_ca0106_proc_init(chip); if ((err = snd_card_register(card)) < 0) { -- cgit v1.2.3-18-g5258