| 1 | // SPDX-License-Identifier: GPL-2.0-or-later
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| 2 | /*
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| 3 | * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
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| 4 | *
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| 5 | * Routines for control of EMU10K1 WaveTable synth
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| 6 | */
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| 7 |
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| 8 | #include "emu10k1_synth_local.h"
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| 9 | #include <linux/init.h>
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| 10 | #include <linux/module.h>
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| 11 |
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| 12 | MODULE_AUTHOR("Takashi Iwai");
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| 13 | MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");
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| 14 | MODULE_LICENSE("GPL");
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| 15 |
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| 16 | #ifdef TARGET_OS2
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| 17 | #define KBUILD_MODNAME "emu10k1_synth"
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| 18 | #endif
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| 19 |
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| 20 | /*
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| 21 | * create a new hardware dependent device for Emu10k1
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| 22 | */
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| 23 | static int snd_emu10k1_synth_probe(struct device *_dev)
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| 24 | {
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| 25 | struct snd_seq_device *dev = to_seq_dev(_dev);
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| 26 | struct snd_emux *emux;
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| 27 | struct snd_emu10k1 *hw;
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| 28 | struct snd_emu10k1_synth_arg *arg;
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| 29 |
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| 30 | arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
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| 31 | if (arg == NULL)
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| 32 | return -EINVAL;
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| 33 |
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| 34 | if (arg->seq_ports <= 0)
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| 35 | return 0; /* nothing */
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| 36 | if (arg->max_voices < 1)
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| 37 | arg->max_voices = 1;
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| 38 | else if (arg->max_voices > 64)
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| 39 | arg->max_voices = 64;
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| 40 |
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| 41 | if (snd_emux_new(&emux) < 0)
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| 42 | return -ENOMEM;
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| 43 |
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| 44 | snd_emu10k1_ops_setup(emux);
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| 45 | hw = arg->hwptr;
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| 46 | emux->hw = hw;
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| 47 | emux->max_voices = arg->max_voices;
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| 48 | emux->num_ports = arg->seq_ports;
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| 49 | emux->memhdr = hw->memhdr;
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| 50 | /* maximum two ports */
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| 51 | emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2;
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| 52 | /* audigy has two external midis */
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| 53 | emux->midi_devidx = hw->audigy ? 2 : 1;
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| 54 | emux->linear_panning = 0;
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| 55 | emux->hwdep_idx = 2; /* FIXED */
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| 56 |
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| 57 | if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {
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| 58 | snd_emux_free(emux);
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| 59 | return -ENOMEM;
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| 60 | }
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| 61 |
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| 62 | spin_lock_irq(&hw->voice_lock);
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| 63 | hw->synth = emux;
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| 64 | hw->get_synth_voice = snd_emu10k1_synth_get_voice;
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| 65 | spin_unlock_irq(&hw->voice_lock);
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| 66 |
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| 67 | dev->driver_data = emux;
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| 68 |
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| 69 | return 0;
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| 70 | }
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| 71 |
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| 72 | static int snd_emu10k1_synth_remove(struct device *_dev)
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| 73 | {
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| 74 | struct snd_seq_device *dev = to_seq_dev(_dev);
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| 75 | struct snd_emux *emux;
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| 76 | struct snd_emu10k1 *hw;
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| 77 |
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| 78 | if (dev->driver_data == NULL)
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| 79 | return 0; /* not registered actually */
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| 80 |
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| 81 | emux = dev->driver_data;
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| 82 |
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| 83 | hw = emux->hw;
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| 84 | spin_lock_irq(&hw->voice_lock);
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| 85 | hw->synth = NULL;
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| 86 | hw->get_synth_voice = NULL;
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| 87 | spin_unlock_irq(&hw->voice_lock);
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| 88 |
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| 89 | snd_emux_free(emux);
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| 90 | return 0;
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| 91 | }
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| 92 |
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| 93 | /*
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| 94 | * INIT part
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| 95 | */
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| 96 |
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| 97 | static struct snd_seq_driver emu10k1_synth_driver = {
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| 98 | .driver = {
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| 99 | .name = KBUILD_MODNAME,
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| 100 | .probe = snd_emu10k1_synth_probe,
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| 101 | .remove = snd_emu10k1_synth_remove,
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| 102 | },
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| 103 | .id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
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| 104 | .argsize = sizeof(struct snd_emu10k1_synth_arg),
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| 105 | };
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| 106 |
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| 107 | module_snd_seq_driver(emu10k1_synth_driver);
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