/* * Copyright (c) by Jaroslav Kysela * Creative Labs, Inc. * Lee Revell * Routines for control of EMU10K1 chips - voice manager * * Rewrote voice allocator for multichannel support - rlrevell 12/2004 * * BUGS: * -- * * TODO: * -- * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include /* Previously the voice allocator started at 0 every time. The new voice * allocator uses a round robin scheme. The next free voice is tracked in * the card record and each allocation begins where the last left off. The * hardware requires stereo interleaved voices be aligned to an even/odd * boundary. For multichannel voice allocation we ensure than the block of * voices does not cross the 32 voice boundary. This simplifies the * multichannel support and ensures we can use a single write to the * (set|clear)_loop_stop registers. Otherwise (for example) the voices would * get out of sync when pausing/resuming a stream. * --rlrevell */ static int voice_alloc(struct snd_emu10k1 *emu, int type, int number, struct snd_emu10k1_voice **rvoice) { struct snd_emu10k1_voice *voice; int i, j, k, first_voice, last_voice, skip; *rvoice = NULL; first_voice = last_voice = 0; for (i = emu->next_free_voice, j = 0; j < NUM_G ; i += number, j += number) { /* dev_dbg(emu->card->dev, "i %d j %d next free %d!\n", i, j, emu->next_free_voice); */ i %= NUM_G; /* stereo voices must be even/odd */ if ((number == 2) && (i % 2)) { i++; continue; } skip = 0; for (k = 0; k < number; k++) { voice = &emu->voices[(i+k) % NUM_G]; if (voice->use) { skip = 1; break; } } if (!skip) { /* dev_dbg(emu->card->dev, "allocated voice %d\n", i); */ first_voice = i; last_voice = (i + number) % NUM_G; emu->next_free_voice = last_voice; break; } } if (first_voice == last_voice) return -ENOMEM; for (i = 0; i < number; i++) { voice = &emu->voices[(first_voice + i) % NUM_G]; /* dev_dbg(emu->card->dev, "voice alloc - %i, %i of %i\n", voice->number, idx-first_voice+1, number); */ voice->use = 1; switch (type) { case EMU10K1_PCM: voice->pcm = 1; break; case EMU10K1_SYNTH: voice->synth = 1; break; case EMU10K1_MIDI: voice->midi = 1; break; case EMU10K1_EFX: voice->efx = 1; break; } } *rvoice = &emu->voices[first_voice]; return 0; } int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int number, struct snd_emu10k1_voice **rvoice) { unsigned long flags; int result; if (snd_BUG_ON(!rvoice)) return -EINVAL; if (snd_BUG_ON(!number)) return -EINVAL; spin_lock_irqsave(&emu->voice_lock, flags); for (;;) { result = voice_alloc(emu, type, number, rvoice); if (result == 0 || type == EMU10K1_SYNTH || type == EMU10K1_MIDI) break; /* free a voice from synth */ if (emu->get_synth_voice) { result = emu->get_synth_voice(emu); if (result >= 0) { struct snd_emu10k1_voice *pvoice = &emu->voices[result]; pvoice->interrupt = NULL; pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = pvoice->efx = 0; pvoice->epcm = NULL; } } if (result < 0) break; } spin_unlock_irqrestore(&emu->voice_lock, flags); return result; } EXPORT_SYMBOL(snd_emu10k1_voice_alloc); int snd_emu10k1_voice_free(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice) { unsigned long flags; if (snd_BUG_ON(!pvoice)) return -EINVAL; spin_lock_irqsave(&emu->voice_lock, flags); pvoice->interrupt = NULL; pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = pvoice->efx = 0; pvoice->epcm = NULL; snd_emu10k1_voice_init(emu, pvoice->number); spin_unlock_irqrestore(&emu->voice_lock, flags); return 0; } EXPORT_SYMBOL(snd_emu10k1_voice_free); l.com>2017-01-13 11:54:08 +0000 committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-23 22:41:32 +0800 commitd6040764adcb5cb6de1489422411d701c158bb69 (patch) treeec8f34788bcdeaa9dc8f69c58af4c005d1e49021 /include/dt-bindings/pwm parent07825f0acd85dd8b7481d5ef0eb024b05364d892 (diff)
crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg
Make sure CRYPTO_ALG_DEAD bit is cleared before proceeding with the algorithm registration. This fixes qat-dh registration when driver is restarted Cc: <stable@vger.kernel.org> Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/dt-bindings/pwm')