| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> |
| 4 | * |
| 5 | * Routines for control of EMU10K1 WaveTable synth |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #include "emu10k1_synth_local.h" |
| 9 | #include <linux/init.h> |
| 10 | #include <linux/module.h> |
| 11 | |
| 12 | MODULE_AUTHOR("Takashi Iwai"); |
| 13 | MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth"); |
| 14 | MODULE_LICENSE("GPL"); |
| 15 | |
| 16 | /* |
| 17 | * create a new hardware dependent device for Emu10k1 |
| 18 | */ |
| 19 | static 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 | unsigned long flags; |
| 26 | |
| 27 | arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); |
| 28 | if (arg == NULL) |
| 29 | return -EINVAL; |
| 30 | |
| 31 | if (arg->seq_ports <= 0) |
| 32 | return 0; /* nothing */ |
| 33 | if (arg->max_voices < 1) |
| 34 | arg->max_voices = 1; |
| 35 | else if (arg->max_voices > 64) |
| 36 | arg->max_voices = 64; |
| 37 | |
| 38 | if (snd_emux_new(&emux) < 0) |
| 39 | return -ENOMEM; |
| 40 | |
| 41 | snd_emu10k1_ops_setup(emux); |
| 42 | hw = arg->hwptr; |
| 43 | emux->hw = hw; |
| 44 | emux->max_voices = arg->max_voices; |
| 45 | emux->num_ports = arg->seq_ports; |
| 46 | emux->pitch_shift = -501; |
| 47 | emux->memhdr = hw->memhdr; |
| 48 | /* maximum two ports */ |
| 49 | emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; |
| 50 | /* audigy has two external midis */ |
| 51 | emux->midi_devidx = hw->audigy ? 2 : 1; |
| 52 | emux->linear_panning = 0; |
| 53 | emux->hwdep_idx = 2; /* FIXED */ |
| 54 | |
| 55 | if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) { |
| 56 | snd_emux_free(emux); |
| 57 | return -ENOMEM; |
| 58 | } |
| 59 | |
| 60 | spin_lock_irqsave(&hw->voice_lock, flags); |
| 61 | hw->synth = emux; |
| 62 | hw->get_synth_voice = snd_emu10k1_synth_get_voice; |
| 63 | spin_unlock_irqrestore(&hw->voice_lock, flags); |
| 64 | |
| 65 | dev->driver_data = emux; |
| 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | static int snd_emu10k1_synth_remove(struct device *_dev) |
| 71 | { |
| 72 | struct snd_seq_device *dev = to_seq_dev(_dev); |
| 73 | struct snd_emux *emux; |
| 74 | struct snd_emu10k1 *hw; |
| 75 | unsigned long flags; |
| 76 | |
| 77 | if (dev->driver_data == NULL) |
| 78 | return 0; /* not registered actually */ |
| 79 | |
| 80 | emux = dev->driver_data; |
| 81 | |
| 82 | hw = emux->hw; |
| 83 | spin_lock_irqsave(&hw->voice_lock, flags); |
| 84 | hw->synth = NULL; |
| 85 | hw->get_synth_voice = NULL; |
| 86 | spin_unlock_irqrestore(&hw->voice_lock, flags); |
| 87 | |
| 88 | snd_emux_free(emux); |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * INIT part |
| 94 | */ |
| 95 | |
| 96 | static struct snd_seq_driver emu10k1_synth_driver = { |
| 97 | .driver = { |
| 98 | .name = KBUILD_MODNAME, |
| 99 | .probe = snd_emu10k1_synth_probe, |
| 100 | .remove = snd_emu10k1_synth_remove, |
| 101 | }, |
| 102 | .id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, |
| 103 | .argsize = sizeof(struct snd_emu10k1_synth_arg), |
| 104 | }; |
| 105 | |
| 106 | module_snd_seq_driver(emu10k1_synth_driver); |