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106 lines
2.4 KiB
106 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2000 Takashi Iwai <[email protected]> |
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* |
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* Routines for control of EMU10K1 WaveTable synth |
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*/ |
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#include "emu10k1_synth_local.h" |
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#include <linux/init.h> |
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#include <linux/module.h> |
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MODULE_AUTHOR("Takashi Iwai"); |
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MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth"); |
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MODULE_LICENSE("GPL"); |
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/* |
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* create a new hardware dependent device for Emu10k1 |
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*/ |
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static int snd_emu10k1_synth_probe(struct device *_dev) |
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{ |
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struct snd_seq_device *dev = to_seq_dev(_dev); |
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struct snd_emux *emux; |
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struct snd_emu10k1 *hw; |
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struct snd_emu10k1_synth_arg *arg; |
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unsigned long flags; |
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arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); |
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if (arg == NULL) |
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return -EINVAL; |
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if (arg->seq_ports <= 0) |
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return 0; /* nothing */ |
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if (arg->max_voices < 1) |
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arg->max_voices = 1; |
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else if (arg->max_voices > 64) |
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arg->max_voices = 64; |
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if (snd_emux_new(&emux) < 0) |
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return -ENOMEM; |
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snd_emu10k1_ops_setup(emux); |
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hw = arg->hwptr; |
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emux->hw = hw; |
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emux->max_voices = arg->max_voices; |
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emux->num_ports = arg->seq_ports; |
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emux->pitch_shift = -501; |
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emux->memhdr = hw->memhdr; |
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/* maximum two ports */ |
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emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; |
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/* audigy has two external midis */ |
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emux->midi_devidx = hw->audigy ? 2 : 1; |
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emux->linear_panning = 0; |
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emux->hwdep_idx = 2; /* FIXED */ |
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if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) { |
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snd_emux_free(emux); |
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return -ENOMEM; |
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} |
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spin_lock_irqsave(&hw->voice_lock, flags); |
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hw->synth = emux; |
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hw->get_synth_voice = snd_emu10k1_synth_get_voice; |
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spin_unlock_irqrestore(&hw->voice_lock, flags); |
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dev->driver_data = emux; |
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return 0; |
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} |
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static int snd_emu10k1_synth_remove(struct device *_dev) |
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{ |
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struct snd_seq_device *dev = to_seq_dev(_dev); |
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struct snd_emux *emux; |
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struct snd_emu10k1 *hw; |
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unsigned long flags; |
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if (dev->driver_data == NULL) |
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return 0; /* not registered actually */ |
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emux = dev->driver_data; |
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hw = emux->hw; |
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spin_lock_irqsave(&hw->voice_lock, flags); |
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hw->synth = NULL; |
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hw->get_synth_voice = NULL; |
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spin_unlock_irqrestore(&hw->voice_lock, flags); |
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snd_emux_free(emux); |
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return 0; |
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} |
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/* |
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* INIT part |
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*/ |
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static struct snd_seq_driver emu10k1_synth_driver = { |
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.driver = { |
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.name = KBUILD_MODNAME, |
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.probe = snd_emu10k1_synth_probe, |
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.remove = snd_emu10k1_synth_remove, |
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}, |
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.id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, |
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.argsize = sizeof(struct snd_emu10k1_synth_arg), |
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}; |
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module_snd_seq_driver(emu10k1_synth_driver);
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