Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| 3 | * Creative Labs, Inc. |
| 4 | * Routines for IRQ control of EMU10K1 chips |
| 5 | * |
| 6 | * BUGS: |
| 7 | * -- |
| 8 | * |
| 9 | * TODO: |
| 10 | * -- |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <sound/driver.h> |
| 29 | #include <linux/time.h> |
| 30 | #include <sound/core.h> |
| 31 | #include <sound/emu10k1.h> |
| 32 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 33 | irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | { |
Takashi Iwai | eb4698f | 2005-11-17 14:50:13 +0100 | [diff] [blame] | 35 | struct snd_emu10k1 *emu = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | unsigned int status, status2, orig_status, orig_status2; |
| 37 | int handled = 0; |
| 38 | |
| 39 | while ((status = inl(emu->port + IPR)) != 0) { |
James Courtier-Dutton | fb6a0d6 | 2006-07-23 13:59:44 +0100 | [diff] [blame] | 40 | //snd_printk(KERN_INFO "emu10k1 irq - status = 0x%x\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | orig_status = status; |
| 42 | handled = 1; |
James Courtier-Dutton | fb6a0d6 | 2006-07-23 13:59:44 +0100 | [diff] [blame] | 43 | if ((status & 0xffffffff) == 0xffffffff) { |
| 44 | snd_printk(KERN_INFO "snd-emu10k1: Suspected sound card removal\n"); |
| 45 | break; |
| 46 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | if (status & IPR_PCIERROR) { |
Takashi Iwai | 99b359b | 2005-10-20 18:26:44 +0200 | [diff] [blame] | 48 | snd_printk(KERN_ERR "interrupt: PCI error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE); |
| 50 | status &= ~IPR_PCIERROR; |
| 51 | } |
| 52 | if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) { |
| 53 | if (emu->hwvol_interrupt) |
| 54 | emu->hwvol_interrupt(emu, status); |
| 55 | else |
| 56 | snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE); |
| 57 | status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE); |
| 58 | } |
| 59 | if (status & IPR_CHANNELLOOP) { |
| 60 | int voice; |
| 61 | int voice_max = status & IPR_CHANNELNUMBERMASK; |
| 62 | u32 val; |
Takashi Iwai | eb4698f | 2005-11-17 14:50:13 +0100 | [diff] [blame] | 63 | struct snd_emu10k1_voice *pvoice = emu->voices; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | val = snd_emu10k1_ptr_read(emu, CLIPL, 0); |
| 66 | for (voice = 0; voice <= voice_max; voice++) { |
| 67 | if (voice == 0x20) |
| 68 | val = snd_emu10k1_ptr_read(emu, CLIPH, 0); |
| 69 | if (val & 1) { |
| 70 | if (pvoice->use && pvoice->interrupt != NULL) { |
| 71 | pvoice->interrupt(emu, pvoice); |
| 72 | snd_emu10k1_voice_intr_ack(emu, voice); |
| 73 | } else { |
| 74 | snd_emu10k1_voice_intr_disable(emu, voice); |
| 75 | } |
| 76 | } |
| 77 | val >>= 1; |
| 78 | pvoice++; |
| 79 | } |
| 80 | val = snd_emu10k1_ptr_read(emu, HLIPL, 0); |
| 81 | for (voice = 0; voice <= voice_max; voice++) { |
| 82 | if (voice == 0x20) |
| 83 | val = snd_emu10k1_ptr_read(emu, HLIPH, 0); |
| 84 | if (val & 1) { |
| 85 | if (pvoice->use && pvoice->interrupt != NULL) { |
| 86 | pvoice->interrupt(emu, pvoice); |
| 87 | snd_emu10k1_voice_half_loop_intr_ack(emu, voice); |
| 88 | } else { |
| 89 | snd_emu10k1_voice_half_loop_intr_disable(emu, voice); |
| 90 | } |
| 91 | } |
| 92 | val >>= 1; |
| 93 | pvoice++; |
| 94 | } |
| 95 | status &= ~IPR_CHANNELLOOP; |
| 96 | } |
| 97 | status &= ~IPR_CHANNELNUMBERMASK; |
| 98 | if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) { |
| 99 | if (emu->capture_interrupt) |
| 100 | emu->capture_interrupt(emu, status); |
| 101 | else |
| 102 | snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE); |
| 103 | status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL); |
| 104 | } |
| 105 | if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) { |
| 106 | if (emu->capture_mic_interrupt) |
| 107 | emu->capture_mic_interrupt(emu, status); |
| 108 | else |
| 109 | snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE); |
| 110 | status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL); |
| 111 | } |
| 112 | if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) { |
| 113 | if (emu->capture_efx_interrupt) |
| 114 | emu->capture_efx_interrupt(emu, status); |
| 115 | else |
| 116 | snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE); |
| 117 | status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL); |
| 118 | } |
| 119 | if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) { |
| 120 | if (emu->midi.interrupt) |
| 121 | emu->midi.interrupt(emu, status); |
| 122 | else |
| 123 | snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE); |
| 124 | status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY); |
| 125 | } |
| 126 | if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) { |
| 127 | if (emu->midi2.interrupt) |
| 128 | emu->midi2.interrupt(emu, status); |
| 129 | else |
| 130 | snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2); |
| 131 | status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2); |
| 132 | } |
| 133 | if (status & IPR_INTERVALTIMER) { |
| 134 | if (emu->timer) |
| 135 | snd_timer_interrupt(emu->timer, emu->timer->sticks); |
| 136 | else |
| 137 | snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB); |
| 138 | status &= ~IPR_INTERVALTIMER; |
| 139 | } |
| 140 | if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) { |
| 141 | if (emu->spdif_interrupt) |
| 142 | emu->spdif_interrupt(emu, status); |
| 143 | else |
| 144 | snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE); |
| 145 | status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE); |
| 146 | } |
| 147 | if (status & IPR_FXDSP) { |
| 148 | if (emu->dsp_interrupt) |
| 149 | emu->dsp_interrupt(emu); |
| 150 | else |
| 151 | snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE); |
| 152 | status &= ~IPR_FXDSP; |
| 153 | } |
James Courtier-Dutton | 6e4abc4 | 2005-03-26 19:35:29 +0100 | [diff] [blame] | 154 | if (status & IPR_P16V) { |
| 155 | while ((status2 = inl(emu->port + IPR2)) != 0) { |
| 156 | u32 mask = INTE2_PLAYBACK_CH_0_LOOP; /* Full Loop */ |
Takashi Iwai | eb4698f | 2005-11-17 14:50:13 +0100 | [diff] [blame] | 157 | struct snd_emu10k1_voice *pvoice = &(emu->p16v_voices[0]); |
| 158 | struct snd_emu10k1_voice *cvoice = &(emu->p16v_capture_voice); |
James Courtier-Dutton | 6e4abc4 | 2005-03-26 19:35:29 +0100 | [diff] [blame] | 159 | |
| 160 | //printk(KERN_INFO "status2=0x%x\n", status2); |
| 161 | orig_status2 = status2; |
| 162 | if(status2 & mask) { |
| 163 | if(pvoice->use) { |
| 164 | snd_pcm_period_elapsed(pvoice->epcm->substream); |
| 165 | } else { |
| 166 | snd_printk(KERN_ERR "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n", status2, mask, pvoice, pvoice->use); |
| 167 | } |
| 168 | } |
| 169 | if(status2 & 0x110000) { |
| 170 | //printk(KERN_INFO "capture int found\n"); |
| 171 | if(cvoice->use) { |
| 172 | //printk(KERN_INFO "capture period_elapsed\n"); |
| 173 | snd_pcm_period_elapsed(cvoice->epcm->substream); |
| 174 | } |
| 175 | } |
| 176 | outl(orig_status2, emu->port + IPR2); /* ack all */ |
| 177 | } |
| 178 | status &= ~IPR_P16V; |
| 179 | } |
| 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | if (status) { |
| 182 | unsigned int bits; |
James Courtier-Dutton | 6e4abc4 | 2005-03-26 19:35:29 +0100 | [diff] [blame] | 183 | snd_printk(KERN_ERR "emu10k1: unhandled interrupt: 0x%08x\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | //make sure any interrupts we don't handle are disabled: |
| 185 | bits = INTE_FXDSPENABLE | |
| 186 | INTE_PCIERRORENABLE | |
| 187 | INTE_VOLINCRENABLE | |
| 188 | INTE_VOLDECRENABLE | |
| 189 | INTE_MUTEENABLE | |
| 190 | INTE_MICBUFENABLE | |
| 191 | INTE_ADCBUFENABLE | |
| 192 | INTE_EFXBUFENABLE | |
| 193 | INTE_GPSPDIFENABLE | |
| 194 | INTE_CDSPDIFENABLE | |
| 195 | INTE_INTERVALTIMERENB | |
| 196 | INTE_MIDITXENABLE | |
| 197 | INTE_MIDIRXENABLE; |
| 198 | if (emu->audigy) |
| 199 | bits |= INTE_A_MIDITXENABLE2 | INTE_A_MIDIRXENABLE2; |
| 200 | snd_emu10k1_intr_disable(emu, bits); |
| 201 | } |
| 202 | outl(orig_status, emu->port + IPR); /* ack all */ |
| 203 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | return IRQ_RETVAL(handled); |
| 205 | } |