2 * C-Media CMI8788 driver - main driver module
4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
7 * This driver is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License, version 2.
10 * This driver is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this driver; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <sound/driver.h>
21 #include <linux/delay.h>
22 #include <linux/interrupt.h>
23 #include <linux/mutex.h>
24 #include <linux/pci.h>
25 #include <sound/ac97_codec.h>
26 #include <sound/asoundef.h>
27 #include <sound/core.h>
28 #include <sound/info.h>
29 #include <sound/mpu401.h>
30 #include <sound/pcm.h>
33 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
34 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
35 MODULE_LICENSE("GPL");
38 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
40 struct oxygen *chip = dev_id;
41 unsigned int status, clear, elapsed_streams, i;
43 status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
47 spin_lock(&chip->reg_lock);
49 clear = status & (OXYGEN_CHANNEL_A |
52 OXYGEN_CHANNEL_SPDIF |
53 OXYGEN_CHANNEL_MULTICH |
55 OXYGEN_INT_SPDIF_IN_CHANGE |
58 if (clear & OXYGEN_INT_SPDIF_IN_CHANGE)
59 chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_CHANGE;
60 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
61 chip->interrupt_mask & ~clear);
62 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
63 chip->interrupt_mask);
66 elapsed_streams = status & chip->pcm_running;
68 spin_unlock(&chip->reg_lock);
70 for (i = 0; i < PCM_COUNT; ++i)
71 if ((elapsed_streams & (1 << i)) && chip->streams[i])
72 snd_pcm_period_elapsed(chip->streams[i]);
74 if (status & OXYGEN_INT_SPDIF_IN_CHANGE) {
75 spin_lock(&chip->reg_lock);
76 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
77 if (i & OXYGEN_SPDIF_IN_CHANGE) {
78 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
79 schedule_work(&chip->spdif_input_bits_work);
81 spin_unlock(&chip->reg_lock);
84 if (status & OXYGEN_INT_GPIO)
87 if ((status & OXYGEN_INT_MIDI) && chip->midi)
88 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
93 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
95 struct oxygen *chip = container_of(work, struct oxygen,
96 spdif_input_bits_work);
98 spin_lock_irq(&chip->reg_lock);
99 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_IN_INVERT);
100 spin_unlock_irq(&chip->reg_lock);
102 if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
103 & OXYGEN_SPDIF_IN_VALID)) {
104 spin_lock_irq(&chip->reg_lock);
105 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL,
106 OXYGEN_SPDIF_IN_INVERT);
107 spin_unlock_irq(&chip->reg_lock);
109 if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
110 & OXYGEN_SPDIF_IN_VALID)) {
111 spin_lock_irq(&chip->reg_lock);
112 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
113 OXYGEN_SPDIF_IN_INVERT);
114 spin_unlock_irq(&chip->reg_lock);
118 if (chip->spdif_input_bits_ctl) {
119 spin_lock_irq(&chip->reg_lock);
120 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
121 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
122 chip->interrupt_mask);
123 spin_unlock_irq(&chip->reg_lock);
125 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
126 &chip->spdif_input_bits_ctl->id);
130 #ifdef CONFIG_PROC_FS
131 static void oxygen_proc_read(struct snd_info_entry *entry,
132 struct snd_info_buffer *buffer)
134 struct oxygen *chip = entry->private_data;
137 snd_iprintf(buffer, "CMI8788\n\n");
138 for (i = 0; i < 0x100; i += 0x10) {
139 snd_iprintf(buffer, "%02x:", i);
140 for (j = 0; j < 0x10; ++j)
141 snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
142 snd_iprintf(buffer, "\n");
144 if (mutex_lock_interruptible(&chip->mutex) < 0)
146 snd_iprintf(buffer, "\nAC97\n");
147 for (i = 0; i < 0x80; i += 0x10) {
148 snd_iprintf(buffer, "%02x:", i);
149 for (j = 0; j < 0x10; j += 2)
150 snd_iprintf(buffer, " %04x",
151 oxygen_read_ac97(chip, 0, i + j));
152 snd_iprintf(buffer, "\n");
154 mutex_unlock(&chip->mutex);
157 static void __devinit oxygen_proc_init(struct oxygen *chip)
159 struct snd_info_entry *entry;
161 if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
162 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
165 #define oxygen_proc_init(chip)
168 static void __devinit oxygen_init(struct oxygen *chip)
172 chip->dac_routing = 1;
173 for (i = 0; i < 8; ++i)
174 chip->dac_volume[i] = 0xff;
175 chip->spdif_playback_enable = 1;
176 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
177 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
178 chip->spdif_pcm_bits = chip->spdif_bits;
180 if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
185 if (chip->revision == 1)
186 oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC);
188 oxygen_set_bits8(chip, OXYGEN_FUNCTION,
189 OXYGEN_FUNCTION_RESET_CODEC |
190 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
191 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a);
192 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a);
193 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a);
194 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
195 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
196 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
197 oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0x6c00);
198 oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
199 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
200 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);
202 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
203 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
205 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00);
206 oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG,
207 OXYGEN_AC97_OUT_MAGIC3);
208 oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG,
209 OXYGEN_AC97_IN_MAGIC3);
210 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
212 oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300);
213 oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043);
214 oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f);
215 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
216 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
217 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
218 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
219 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
220 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
221 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
222 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
223 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
224 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
225 oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001);
226 /* power down unused ADCs and DACs */
227 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
228 AC97_PD_PR0 | AC97_PD_PR1);
229 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
230 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
233 static void oxygen_card_free(struct snd_card *card)
235 struct oxygen *chip = card->private_data;
237 spin_lock_irq(&chip->reg_lock);
238 chip->interrupt_mask = 0;
239 chip->pcm_running = 0;
240 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
241 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
242 spin_unlock_irq(&chip->reg_lock);
243 if (chip->irq >= 0) {
244 free_irq(chip->irq, chip);
245 synchronize_irq(chip->irq);
247 flush_scheduled_work();
248 chip->model->cleanup(chip);
249 mutex_destroy(&chip->mutex);
250 pci_release_regions(chip->pci);
251 pci_disable_device(chip->pci);
254 int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
255 const struct oxygen_model *model)
257 struct snd_card *card;
261 card = snd_card_new(index, id, model->owner, sizeof *chip);
265 chip = card->private_data;
270 spin_lock_init(&chip->reg_lock);
271 mutex_init(&chip->mutex);
272 INIT_WORK(&chip->spdif_input_bits_work,
273 oxygen_spdif_input_bits_changed);
275 err = pci_enable_device(pci);
279 err = pci_request_regions(pci, model->chip);
281 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
285 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
286 pci_resource_len(pci, 0) < 0x100) {
287 snd_printk(KERN_ERR "invalid PCI I/O range\n");
289 goto err_pci_regions;
291 chip->addr = pci_resource_start(pci, 0);
294 snd_card_set_dev(card, &pci->dev);
295 card->private_free = oxygen_card_free;
300 err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
303 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
306 chip->irq = pci->irq;
308 strcpy(card->driver, model->chip);
309 strcpy(card->shortname, model->shortname);
310 sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
311 model->longname, chip->revision, chip->addr, chip->irq);
312 strcpy(card->mixername, model->chip);
313 snd_component_add(card, model->chip);
315 err = oxygen_pcm_init(chip);
319 err = oxygen_mixer_init(chip);
323 if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) {
324 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
325 chip->addr + OXYGEN_MPU401,
326 MPU401_INFO_INTEGRATED, 0, 0,
332 oxygen_proc_init(chip);
334 spin_lock_irq(&chip->reg_lock);
335 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
336 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
337 spin_unlock_irq(&chip->reg_lock);
339 err = snd_card_register(card);
343 pci_set_drvdata(pci, card);
347 pci_release_regions(pci);
349 pci_disable_device(pci);
354 EXPORT_SYMBOL(oxygen_pci_probe);
356 void __devexit oxygen_pci_remove(struct pci_dev *pci)
358 snd_card_free(pci_get_drvdata(pci));
359 pci_set_drvdata(pci, NULL);
361 EXPORT_SYMBOL(oxygen_pci_remove);