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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>4 *5 * Routines for control of EMU10K1 WaveTable synth6 */7 8#include "emu10k1_synth_local.h"9#include <linux/init.h>10#include <linux/module.h>11 12MODULE_AUTHOR("Takashi Iwai");13MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");14MODULE_LICENSE("GPL");15 16/*17 * create a new hardware dependent device for Emu10k118 */19static int snd_emu10k1_synth_probe(struct device *_dev)20{21 struct snd_seq_device *dev = to_seq_dev(_dev);22 struct snd_emux *emux;23 struct snd_emu10k1 *hw;24 struct snd_emu10k1_synth_arg *arg;25 26 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);27 if (arg == NULL)28 return -EINVAL;29 30 if (arg->seq_ports <= 0)31 return 0; /* nothing */32 if (arg->max_voices < 1)33 arg->max_voices = 1;34 else if (arg->max_voices > 64)35 arg->max_voices = 64;36 37 if (snd_emux_new(&emux) < 0)38 return -ENOMEM;39 40 snd_emu10k1_ops_setup(emux);41 hw = arg->hwptr;42 emux->hw = hw;43 emux->max_voices = arg->max_voices;44 emux->num_ports = arg->seq_ports;45 emux->memhdr = hw->memhdr;46 /* maximum two ports */47 emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2;48 /* audigy has two external midis */49 emux->midi_devidx = hw->audigy ? 2 : 1;50 emux->linear_panning = 0;51 emux->hwdep_idx = 2; /* FIXED */52 53 if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {54 snd_emux_free(emux);55 return -ENOMEM;56 }57 58 spin_lock_irq(&hw->voice_lock);59 hw->synth = emux;60 hw->get_synth_voice = snd_emu10k1_synth_get_voice;61 spin_unlock_irq(&hw->voice_lock);62 63 dev->driver_data = emux;64 65 return 0;66}67 68static int snd_emu10k1_synth_remove(struct device *_dev)69{70 struct snd_seq_device *dev = to_seq_dev(_dev);71 struct snd_emux *emux;72 struct snd_emu10k1 *hw;73 74 if (dev->driver_data == NULL)75 return 0; /* not registered actually */76 77 emux = dev->driver_data;78 79 hw = emux->hw;80 spin_lock_irq(&hw->voice_lock);81 hw->synth = NULL;82 hw->get_synth_voice = NULL;83 spin_unlock_irq(&hw->voice_lock);84 85 snd_emux_free(emux);86 return 0;87}88 89/*90 * INIT part91 */92 93static struct snd_seq_driver emu10k1_synth_driver = {94 .driver = {95 .name = KBUILD_MODNAME,96 .probe = snd_emu10k1_synth_probe,97 .remove = snd_emu10k1_synth_remove,98 },99 .id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,100 .argsize = sizeof(struct snd_emu10k1_synth_arg),101};102 103module_snd_seq_driver(emu10k1_synth_driver);104