mirror of https://gitee.com/openkylin/linux.git
[ALSA] snd-ca0106: Add midi support.
Modules: PCI drivers,CA0106 driver Author: Tilman Kranz <tilde@tk-sls.de> Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
This commit is contained in:
James Courtier-Dutton
Jaroslav Kysela
parent
b0b9811956
commit
8a5afd29dc
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@ -184,6 +184,7 @@ config SND_CA0106
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tristate "SB Audigy LS / Live 24bit"
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depends on SND
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select SND_AC97_CODEC
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select SND_RAWMIDI
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help
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Say Y here to include support for the Sound Blaster Audigy LS
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and Live 24bit.
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@ -1,3 +1,3 @@
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snd-ca0106-objs := ca0106_main.o ca0106_proc.o ca0106_mixer.o
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snd-ca0106-objs := ca0106_main.o ca0106_proc.o ca0106_mixer.o ca_midi.o
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obj-$(CONFIG_SND_CA0106) += snd-ca0106.o
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@ -399,10 +399,24 @@
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#define PLAYBACK_VOLUME2 0x6a /* Playback Analog volume per channel. Does not effect AC3 output */
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/* Similar to register 0x66, except that the destination is the I2S mixer instead of the SPDIF mixer. I.E. Outputs to the Analog outputs instead of SPDIF. */
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#define UNKNOWN6b 0x6b /* Unknown. Readonly. Default 00400000 00400000 00400000 00400000 */
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#define UART_A_DATA 0x6c /* Uart, used in setting sample rates, bits per sample etc. */
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#define UART_A_CMD 0x6d /* Uart, used in setting sample rates, bits per sample etc. */
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#define UART_B_DATA 0x6e /* Uart, Unknown. */
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#define UART_B_CMD 0x6f /* Uart, Unknown. */
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#define MIDI_UART_A_DATA 0x6c /* Midi Uart A Data */
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#define MIDI_UART_A_CMD 0x6d /* Midi Uart A Command/Status */
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#define MIDI_UART_B_DATA 0x6e /* Midi Uart B Data (currently unused) */
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#define MIDI_UART_B_CMD 0x6f /* Midi Uart B Command/Status (currently unused) */
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/* unique channel identifier for midi->channel */
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#define CA0106_MIDI_CHAN_A 0x1
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#define CA0106_MIDI_CHAN_B 0x2
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/* from mpu401 */
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#define CA0106_MIDI_INPUT_AVAIL 0x80
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#define CA0106_MIDI_OUTPUT_READY 0x40
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#define CA0106_MPU401_RESET 0xff
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#define CA0106_MPU401_ENTER_UART 0x3f
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#define CA0106_MPU401_ACK 0xfe
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#define SAMPLE_RATE_TRACKER_STATUS 0x70 /* Readonly. Default 00108000 00108000 00500000 00500000 */
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/* Estimated sample rate [19:0] Relative to 48kHz. 0x8000 = 1.0
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* Rate Locked [20]
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@ -538,6 +552,8 @@
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#define CONTROL_CENTER_LFE_CHANNEL 1
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#define CONTROL_UNKNOWN_CHANNEL 2
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#include "ca_midi.h"
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typedef struct snd_ca0106_channel ca0106_channel_t;
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typedef struct snd_ca0106 ca0106_t;
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typedef struct snd_ca0106_pcm ca0106_pcm_t;
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@ -592,6 +608,9 @@ struct snd_ca0106 {
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int capture_mic_line_in;
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struct snd_dma_buffer buffer;
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ca_midi_t midi;
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ca_midi_t midi2;
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};
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int __devinit snd_ca0106_mixer(ca0106_t *emu);
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@ -338,6 +338,18 @@ static void snd_ca0106_intr_enable(ca0106_t *emu, unsigned int intrenb)
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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static void snd_ca0106_intr_disable(ca0106_t *emu, unsigned int intrenb)
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{
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unsigned long flags;
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unsigned int enable;
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spin_lock_irqsave(&emu->emu_lock, flags);
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enable = inl(emu->port + INTE) & ~intrenb;
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outl(enable, emu->port + INTE);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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static void snd_ca0106_pcm_free_substream(snd_pcm_runtime_t *runtime)
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{
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kfree(runtime->private_data);
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@ -1040,6 +1052,15 @@ static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id,
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snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
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spin_lock(&chip->emu_lock);
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if (chip->midi.dev_id &&
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(status & (chip->midi.ipr_tx|chip->midi.ipr_rx))) {
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if (chip->midi.interrupt)
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chip->midi.interrupt(&chip->midi, status);
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else
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chip->midi.interrupt_disable(&chip->midi, chip->midi.tx_enable | chip->midi.rx_enable);
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}
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// acknowledge the interrupt if necessary
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outl(status, chip->port+IPR);
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@ -1309,6 +1330,82 @@ static int __devinit snd_ca0106_create(snd_card_t *card,
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return 0;
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}
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void ca0106_midi_interrupt_enable(ca_midi_t *midi, int intr){
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snd_ca0106_intr_enable((ca0106_t *)(midi->dev_id), intr);
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}
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void ca0106_midi_interrupt_disable(ca_midi_t *midi, int intr){
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snd_ca0106_intr_disable((ca0106_t *)(midi->dev_id), intr);
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}
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unsigned char ca0106_midi_read(ca_midi_t *midi, int idx){
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return (unsigned char)snd_ca0106_ptr_read((ca0106_t *)(midi->dev_id), midi->port + idx, 0);
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}
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void ca0106_midi_write(ca_midi_t *midi, int data, int idx){
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snd_ca0106_ptr_write((ca0106_t *)(midi->dev_id), midi->port + idx, 0, data);
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}
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snd_card_t *ca0106_dev_id_card(void *dev_id){
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return ((ca0106_t *)dev_id)->card;
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}
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int ca0106_dev_id_port(void *dev_id){
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return ((ca0106_t *)dev_id)->port;
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}
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static int __devinit snd_ca0106_midi(ca0106_t *chip, unsigned int channel)
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{
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ca_midi_t *midi;
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char *name;
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int err;
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if(channel==CA0106_MIDI_CHAN_B) {
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name = "CA0106 MPU-401 (UART) B";
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midi = &chip->midi2;
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midi->tx_enable = INTE_MIDI_TX_B;
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midi->rx_enable = INTE_MIDI_RX_B;
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midi->ipr_tx = IPR_MIDI_TX_B;
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midi->ipr_rx = IPR_MIDI_RX_B;
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midi->port = MIDI_UART_B_DATA;
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} else {
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name = "CA0106 MPU-401 (UART)";
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midi = &chip->midi;
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midi->tx_enable = INTE_MIDI_TX_A;
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midi->rx_enable = INTE_MIDI_TX_B;
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midi->ipr_tx = IPR_MIDI_TX_A;
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midi->ipr_rx = IPR_MIDI_RX_A;
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midi->port = MIDI_UART_A_DATA;
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}
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midi->reset = CA0106_MPU401_RESET;
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midi->enter_uart = CA0106_MPU401_ENTER_UART;
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midi->ack = CA0106_MPU401_ACK;
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midi->input_avail = CA0106_MIDI_INPUT_AVAIL;
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midi->output_ready = CA0106_MIDI_OUTPUT_READY;
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midi->channel = channel;
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midi->interrupt_enable = ca0106_midi_interrupt_enable;
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midi->interrupt_disable = ca0106_midi_interrupt_disable;
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midi->read = ca0106_midi_read;
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midi->write = ca0106_midi_write;
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midi->get_dev_id_card = ca0106_dev_id_card;
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midi->get_dev_id_port = ca0106_dev_id_port;
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midi->dev_id = chip;
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if ((err = ca_midi_init(chip, midi, 0, name)) < 0)
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return err;
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return 0;
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}
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static int __devinit snd_ca0106_probe(struct pci_dev *pci,
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const struct pci_device_id *pci_id)
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{
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@ -1360,6 +1457,20 @@ static int __devinit snd_ca0106_probe(struct pci_dev *pci,
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return err;
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}
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#ifdef CONFIG_SND_DEBUG_DETECT
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printk("ca0106: probe for MIDI channel A ...");
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#endif
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if ((err = snd_ca0106_midi(chip,CA0106_MIDI_CHAN_A)) < 0) {
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snd_card_free(card);
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#ifdef CONFIG_SND_DEBUG_DETECT
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printk(" failed, err=0x%x\n",err);
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#endif
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return err;
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}
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#ifdef CONFIG_SND_DEBUG_DETECT
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printk(" done.\n");
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#endif
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snd_ca0106_proc_init(chip);
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if ((err = snd_card_register(card)) < 0) {
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@ -0,0 +1,304 @@
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/*
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* Copyright 10/16/2005 Tilman Kranz <tilde@tk-sls.de>
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* Creative Audio MIDI, for the CA0106 Driver
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* Version: 0.0.1
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*
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* Changelog:
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* Implementation is based on mpu401 and emu10k1x and
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* tested with ca0106.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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*/
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#include <linux/spinlock.h>
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#include <sound/driver.h>
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#include <sound/core.h>
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#include <sound/rawmidi.h>
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#include "ca_midi.h"
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#define ca_midi_write_data(midi, data) midi->write(midi, data, 0)
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#define ca_midi_write_cmd(midi, data) midi->write(midi, data, 1)
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#define ca_midi_read_data(midi) midi->read(midi, 0)
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#define ca_midi_read_stat(midi) midi->read(midi, 1)
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#define ca_midi_input_avail(midi) (!(ca_midi_read_stat(midi) & midi->input_avail))
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#define ca_midi_output_ready(midi) (!(ca_midi_read_stat(midi) & midi->output_ready))
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static void ca_midi_clear_rx(ca_midi_t *midi)
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{
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int timeout = 100000;
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for (; timeout > 0 && ca_midi_input_avail(midi); timeout--)
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ca_midi_read_data(midi);
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#ifdef CONFIG_SND_DEBUG
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if (timeout <= 0)
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snd_printk(KERN_ERR "ca_midi_clear_rx: timeout (status = 0x%x)\n", ca_midi_read_stat(midi));
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#endif
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}
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void ca_midi_interrupt(ca_midi_t *midi, unsigned int status) {
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unsigned char byte;
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if (midi->rmidi == NULL) {
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midi->interrupt_disable(midi,midi->tx_enable | midi->rx_enable);
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return;
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}
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spin_lock(&midi->input_lock);
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if ((status & midi->ipr_rx) && ca_midi_input_avail(midi)) {
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if (!(midi->midi_mode & CA_MIDI_MODE_INPUT)) {
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ca_midi_clear_rx(midi);
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} else {
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byte = ca_midi_read_data(midi);
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if(midi->substream_input)
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snd_rawmidi_receive(midi->substream_input, &byte, 1);
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}
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}
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spin_unlock(&midi->input_lock);
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spin_lock(&midi->output_lock);
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if ((status & midi->ipr_tx) && ca_midi_output_ready(midi)) {
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if (midi->substream_output &&
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snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
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ca_midi_write_data(midi, byte);
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} else {
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midi->interrupt_disable(midi,midi->tx_enable);
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}
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}
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spin_unlock(&midi->output_lock);
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}
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static void ca_midi_cmd(ca_midi_t *midi, unsigned char cmd, int ack)
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{
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unsigned long flags;
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int timeout, ok;
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spin_lock_irqsave(&midi->input_lock, flags);
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ca_midi_write_data(midi, 0x00);
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/* ca_midi_clear_rx(midi); */
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ca_midi_write_cmd(midi, cmd);
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if (ack) {
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ok = 0;
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timeout = 10000;
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while (!ok && timeout-- > 0) {
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if (ca_midi_input_avail(midi)) {
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if (ca_midi_read_data(midi) == midi->ack)
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ok = 1;
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}
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}
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if (!ok && ca_midi_read_data(midi) == midi->ack)
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ok = 1;
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} else {
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ok = 1;
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}
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spin_unlock_irqrestore(&midi->input_lock, flags);
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if (!ok)
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snd_printk(KERN_ERR "ca_midi_cmd: 0x%x failed at 0x%x (status = 0x%x, data = 0x%x)!!!\n",
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cmd,
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midi->get_dev_id_port(midi->dev_id),
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ca_midi_read_stat(midi),
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ca_midi_read_data(midi));
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}
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static int ca_midi_input_open(snd_rawmidi_substream_t * substream)
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{
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ca_midi_t *midi = (ca_midi_t *)substream->rmidi->private_data;
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unsigned long flags;
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snd_assert(midi->dev_id, return -ENXIO);
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spin_lock_irqsave(&midi->open_lock, flags);
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midi->midi_mode |= CA_MIDI_MODE_INPUT;
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midi->substream_input = substream;
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if (!(midi->midi_mode & CA_MIDI_MODE_OUTPUT)) {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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ca_midi_cmd(midi, midi->reset, 1);
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ca_midi_cmd(midi, midi->enter_uart, 1);
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} else {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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}
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return 0;
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}
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static int ca_midi_output_open(snd_rawmidi_substream_t * substream)
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{
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ca_midi_t *midi = (ca_midi_t *)substream->rmidi->private_data;
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unsigned long flags;
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snd_assert(midi->dev_id, return -ENXIO);
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spin_lock_irqsave(&midi->open_lock, flags);
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midi->midi_mode |= CA_MIDI_MODE_OUTPUT;
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midi->substream_output = substream;
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if (!(midi->midi_mode & CA_MIDI_MODE_INPUT)) {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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ca_midi_cmd(midi, midi->reset, 1);
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ca_midi_cmd(midi, midi->enter_uart, 1);
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} else {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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}
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return 0;
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}
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static int ca_midi_input_close(snd_rawmidi_substream_t * substream)
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{
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ca_midi_t *midi = (ca_midi_t *)substream->rmidi->private_data;
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unsigned long flags;
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snd_assert(midi->dev_id, return -ENXIO);
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spin_lock_irqsave(&midi->open_lock, flags);
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midi->interrupt_disable(midi,midi->rx_enable);
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midi->midi_mode &= ~CA_MIDI_MODE_INPUT;
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midi->substream_input = NULL;
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if (!(midi->midi_mode & CA_MIDI_MODE_OUTPUT)) {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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ca_midi_cmd(midi, midi->reset, 0);
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} else {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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}
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return 0;
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}
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static int ca_midi_output_close(snd_rawmidi_substream_t * substream)
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{
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ca_midi_t *midi = (ca_midi_t *)substream->rmidi->private_data;
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unsigned long flags;
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snd_assert(midi->dev_id, return -ENXIO);
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spin_lock_irqsave(&midi->open_lock, flags);
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midi->interrupt_disable(midi,midi->tx_enable);
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midi->midi_mode &= ~CA_MIDI_MODE_OUTPUT;
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midi->substream_output = NULL;
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if (!(midi->midi_mode & CA_MIDI_MODE_INPUT)) {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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ca_midi_cmd(midi, midi->reset, 0);
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} else {
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spin_unlock_irqrestore(&midi->open_lock, flags);
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}
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return 0;
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}
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static void ca_midi_input_trigger(snd_rawmidi_substream_t * substream, int up)
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{
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ca_midi_t *midi = (ca_midi_t *)substream->rmidi->private_data;
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snd_assert(midi->dev_id, return);
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if (up) {
|
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midi->interrupt_enable(midi,midi->rx_enable);
|
||||
} else {
|
||||
midi->interrupt_disable(midi, midi->rx_enable);
|
||||
}
|
||||
}
|
||||
|
||||
static void ca_midi_output_trigger(snd_rawmidi_substream_t * substream, int up)
|
||||
{
|
||||
ca_midi_t *midi = (ca_midi_t *)substream->rmidi->private_data;
|
||||
unsigned long flags;
|
||||
|
||||
snd_assert(midi->dev_id, return);
|
||||
|
||||
if (up) {
|
||||
int max = 4;
|
||||
unsigned char byte;
|
||||
|
||||
spin_lock_irqsave(&midi->output_lock, flags);
|
||||
|
||||
/* try to send some amount of bytes here before interrupts */
|
||||
while (max > 0) {
|
||||
if (ca_midi_output_ready(midi)) {
|
||||
if (!(midi->midi_mode & CA_MIDI_MODE_OUTPUT) ||
|
||||
snd_rawmidi_transmit(substream, &byte, 1) != 1) {
|
||||
/* no more data */
|
||||
spin_unlock_irqrestore(&midi->output_lock, flags);
|
||||
return;
|
||||
}
|
||||
ca_midi_write_data(midi, byte);
|
||||
max--;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&midi->output_lock, flags);
|
||||
midi->interrupt_enable(midi,midi->tx_enable);
|
||||
|
||||
} else {
|
||||
midi->interrupt_disable(midi,midi->tx_enable);
|
||||
}
|
||||
}
|
||||
|
||||
static snd_rawmidi_ops_t ca_midi_output =
|
||||
{
|
||||
.open = ca_midi_output_open,
|
||||
.close = ca_midi_output_close,
|
||||
.trigger = ca_midi_output_trigger,
|
||||
};
|
||||
|
||||
static snd_rawmidi_ops_t ca_midi_input =
|
||||
{
|
||||
.open = ca_midi_input_open,
|
||||
.close = ca_midi_input_close,
|
||||
.trigger = ca_midi_input_trigger,
|
||||
};
|
||||
|
||||
void ca_midi_free(ca_midi_t *midi) {
|
||||
midi->interrupt = NULL;
|
||||
midi->interrupt_enable = NULL;
|
||||
midi->interrupt_disable = NULL;
|
||||
midi->read = NULL;
|
||||
midi->write = NULL;
|
||||
midi->get_dev_id_card = NULL;
|
||||
midi->get_dev_id_port = NULL;
|
||||
midi->rmidi = NULL;
|
||||
}
|
||||
|
||||
static void ca_rmidi_free(snd_rawmidi_t *rmidi)
|
||||
{
|
||||
ca_midi_free((ca_midi_t *)rmidi->private_data);
|
||||
}
|
||||
|
||||
int __devinit ca_midi_init(void *dev_id, ca_midi_t *midi, int device, char *name)
|
||||
{
|
||||
snd_rawmidi_t *rmidi;
|
||||
int err;
|
||||
|
||||
if ((err = snd_rawmidi_new(midi->get_dev_id_card(midi->dev_id), name, device, 1, 1, &rmidi)) < 0)
|
||||
return err;
|
||||
|
||||
midi->dev_id = dev_id;
|
||||
midi->interrupt = ca_midi_interrupt;
|
||||
|
||||
spin_lock_init(&midi->open_lock);
|
||||
spin_lock_init(&midi->input_lock);
|
||||
spin_lock_init(&midi->output_lock);
|
||||
|
||||
strcpy(rmidi->name, name);
|
||||
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &ca_midi_output);
|
||||
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &ca_midi_input);
|
||||
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
|
||||
SNDRV_RAWMIDI_INFO_INPUT |
|
||||
SNDRV_RAWMIDI_INFO_DUPLEX;
|
||||
rmidi->private_data = midi;
|
||||
rmidi->private_free = ca_rmidi_free;
|
||||
|
||||
midi->rmidi = rmidi;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,72 @@
|
|||
/*
|
||||
* Copyright 10/16/2005 Tilman Kranz <tilde@tk-sls.de>
|
||||
* Creative Audio MIDI, for the CA0106 Driver
|
||||
* Version: 0.0.1
|
||||
*
|
||||
* Changelog:
|
||||
* See ca_midi.c
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
*/
|
||||
|
||||
#include<linux/spinlock.h>
|
||||
#include<sound/rawmidi.h>
|
||||
#include<sound/mpu401.h>
|
||||
|
||||
#define CA_MIDI_MODE_INPUT MPU401_MODE_INPUT
|
||||
#define CA_MIDI_MODE_OUTPUT MPU401_MODE_OUTPUT
|
||||
|
||||
typedef struct ca_midi ca_midi_t;
|
||||
struct ca_midi {
|
||||
|
||||
snd_rawmidi_t *rmidi;
|
||||
snd_rawmidi_substream_t *substream_input;
|
||||
snd_rawmidi_substream_t *substream_output;
|
||||
|
||||
void *dev_id;
|
||||
|
||||
spinlock_t input_lock;
|
||||
spinlock_t output_lock;
|
||||
spinlock_t open_lock;
|
||||
|
||||
unsigned int channel;
|
||||
|
||||
unsigned int midi_mode;
|
||||
int port;
|
||||
int tx_enable, rx_enable;
|
||||
int ipr_tx, ipr_rx;
|
||||
|
||||
int input_avail, output_ready;
|
||||
int ack, reset, enter_uart;
|
||||
|
||||
void (*interrupt)(ca_midi_t *midi, unsigned int status);
|
||||
void (*interrupt_enable)(ca_midi_t *midi, int intr);
|
||||
void (*interrupt_disable)(ca_midi_t *midi, int intr);
|
||||
|
||||
unsigned char (*read)(ca_midi_t *midi, int idx);
|
||||
void (*write)(ca_midi_t *midi, int data, int idx);
|
||||
|
||||
/* get info from dev_id */
|
||||
snd_card_t *(*get_dev_id_card)(void *dev_id);
|
||||
int (*get_dev_id_port)(void *dev_id);
|
||||
};
|
||||
|
||||
void ca_midi_interrupt(ca_midi_t *midi, unsigned int status);
|
||||
|
||||
int __devinit ca_midi_init(void *card, ca_midi_t *midi, int device, char *name);
|
||||
|
||||
void ca_midi_free(ca_midi_t *midi);
|
||||
|
||||
Loading…
Reference in New Issue