1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 4 * 5 * Routines for control of EMU10K1 WaveTable synth 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 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 68 static 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 part 91 */ 92 93 static 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 }; 102 103 module_snd_seq_driver(emu10k1_synth_driver); 104