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 <linux/delay.h>
21 #include <linux/interrupt.h>
22 #include <linux/mutex.h>
23 #include <linux/pci.h>
24 #include <sound/ac97_codec.h>
25 #include <sound/asoundef.h>
26 #include <sound/core.h>
27 #include <sound/info.h>
28 #include <sound/mpu401.h>
29 #include <sound/pcm.h>
32 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
33 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
34 MODULE_LICENSE("GPL");
37 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
39 struct oxygen *chip = dev_id;
40 unsigned int status, clear, elapsed_streams, i;
42 status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
46 spin_lock(&chip->reg_lock);
48 clear = status & (OXYGEN_CHANNEL_A |
51 OXYGEN_CHANNEL_SPDIF |
52 OXYGEN_CHANNEL_MULTICH |
54 OXYGEN_INT_SPDIF_IN_CHANGE |
57 if (clear & OXYGEN_INT_SPDIF_IN_CHANGE)
58 chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_CHANGE;
59 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
60 chip->interrupt_mask & ~clear);
61 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
62 chip->interrupt_mask);
65 elapsed_streams = status & chip->pcm_running;
67 spin_unlock(&chip->reg_lock);
69 for (i = 0; i < PCM_COUNT; ++i)
70 if ((elapsed_streams & (1 << i)) && chip->streams[i])
71 snd_pcm_period_elapsed(chip->streams[i]);
73 if (status & OXYGEN_INT_SPDIF_IN_CHANGE) {
74 spin_lock(&chip->reg_lock);
75 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
76 if (i & OXYGEN_SPDIF_IN_CHANGE) {
77 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
78 schedule_work(&chip->spdif_input_bits_work);
80 spin_unlock(&chip->reg_lock);
83 if (status & OXYGEN_INT_GPIO)
86 if ((status & OXYGEN_INT_MIDI) && chip->midi)
87 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
92 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
94 struct oxygen *chip = container_of(work, struct oxygen,
95 spdif_input_bits_work);
97 spin_lock_irq(&chip->reg_lock);
98 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_IN_INVERT);
99 spin_unlock_irq(&chip->reg_lock);
101 if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
102 & OXYGEN_SPDIF_IN_VALID)) {
103 spin_lock_irq(&chip->reg_lock);
104 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL,
105 OXYGEN_SPDIF_IN_INVERT);
106 spin_unlock_irq(&chip->reg_lock);
108 if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
109 & OXYGEN_SPDIF_IN_VALID)) {
110 spin_lock_irq(&chip->reg_lock);
111 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
112 OXYGEN_SPDIF_IN_INVERT);
113 spin_unlock_irq(&chip->reg_lock);
117 if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
118 spin_lock_irq(&chip->reg_lock);
119 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
120 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
121 chip->interrupt_mask);
122 spin_unlock_irq(&chip->reg_lock);
124 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
125 &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
129 #ifdef CONFIG_PROC_FS
130 static void oxygen_proc_read(struct snd_info_entry *entry,
131 struct snd_info_buffer *buffer)
133 struct oxygen *chip = entry->private_data;
136 snd_iprintf(buffer, "CMI8788\n\n");
137 for (i = 0; i < 0x100; i += 0x10) {
138 snd_iprintf(buffer, "%02x:", i);
139 for (j = 0; j < 0x10; ++j)
140 snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
141 snd_iprintf(buffer, "\n");
143 if (mutex_lock_interruptible(&chip->mutex) < 0)
145 if (chip->has_ac97_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");
155 if (chip->has_ac97_1) {
156 snd_iprintf(buffer, "\nAC97 2\n");
157 for (i = 0; i < 0x80; i += 0x10) {
158 snd_iprintf(buffer, "%02x:", i);
159 for (j = 0; j < 0x10; j += 2)
160 snd_iprintf(buffer, " %04x",
161 oxygen_read_ac97(chip, 1, i + j));
162 snd_iprintf(buffer, "\n");
165 mutex_unlock(&chip->mutex);
168 static void __devinit oxygen_proc_init(struct oxygen *chip)
170 struct snd_info_entry *entry;
172 if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
173 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
176 #define oxygen_proc_init(chip)
179 static void __devinit oxygen_init(struct oxygen *chip)
183 chip->dac_routing = 1;
184 for (i = 0; i < 8; ++i)
185 chip->dac_volume[i] = 0xff;
186 chip->spdif_playback_enable = 1;
187 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
188 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
189 chip->spdif_pcm_bits = chip->spdif_bits;
191 if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
196 if (chip->revision == 1)
197 oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC);
199 i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
200 chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
201 chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
203 oxygen_set_bits8(chip, OXYGEN_FUNCTION,
204 OXYGEN_FUNCTION_RESET_CODEC |
205 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
206 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a);
207 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a);
208 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a);
209 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
210 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
211 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
212 oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0xe100);
213 oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
214 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
215 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);
217 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
218 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
220 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00);
221 if (chip->has_ac97_0) {
222 oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG,
223 OXYGEN_AC97_OUT_MAGIC3);
224 oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG,
225 OXYGEN_AC97_IN_MAGIC3);
226 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
228 oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300);
229 oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043);
230 oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f);
231 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
232 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
233 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
234 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
235 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
236 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
237 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
238 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
239 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
240 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
241 oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001);
242 /* power down unused ADCs and DACs */
243 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
244 AC97_PD_PR0 | AC97_PD_PR1);
245 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
246 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
250 static void oxygen_card_free(struct snd_card *card)
252 struct oxygen *chip = card->private_data;
254 spin_lock_irq(&chip->reg_lock);
255 chip->interrupt_mask = 0;
256 chip->pcm_running = 0;
257 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
258 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
259 spin_unlock_irq(&chip->reg_lock);
260 if (chip->irq >= 0) {
261 free_irq(chip->irq, chip);
262 synchronize_irq(chip->irq);
264 flush_scheduled_work();
265 chip->model->cleanup(chip);
266 mutex_destroy(&chip->mutex);
267 pci_release_regions(chip->pci);
268 pci_disable_device(chip->pci);
271 int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
272 const struct oxygen_model *model)
274 struct snd_card *card;
278 card = snd_card_new(index, id, model->owner, sizeof *chip);
282 chip = card->private_data;
287 spin_lock_init(&chip->reg_lock);
288 mutex_init(&chip->mutex);
289 INIT_WORK(&chip->spdif_input_bits_work,
290 oxygen_spdif_input_bits_changed);
292 err = pci_enable_device(pci);
296 err = pci_request_regions(pci, model->chip);
298 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
302 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
303 pci_resource_len(pci, 0) < 0x100) {
304 snd_printk(KERN_ERR "invalid PCI I/O range\n");
306 goto err_pci_regions;
308 chip->addr = pci_resource_start(pci, 0);
311 snd_card_set_dev(card, &pci->dev);
312 card->private_free = oxygen_card_free;
317 err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
320 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
323 chip->irq = pci->irq;
325 strcpy(card->driver, model->chip);
326 strcpy(card->shortname, model->shortname);
327 sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
328 model->longname, chip->revision, chip->addr, chip->irq);
329 strcpy(card->mixername, model->chip);
330 snd_component_add(card, model->chip);
332 err = oxygen_pcm_init(chip);
336 err = oxygen_mixer_init(chip);
340 if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) {
341 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
342 chip->addr + OXYGEN_MPU401,
343 MPU401_INFO_INTEGRATED, 0, 0,
349 oxygen_proc_init(chip);
351 spin_lock_irq(&chip->reg_lock);
352 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
353 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
354 spin_unlock_irq(&chip->reg_lock);
356 err = snd_card_register(card);
360 pci_set_drvdata(pci, card);
364 pci_release_regions(pci);
366 pci_disable_device(pci);
371 EXPORT_SYMBOL(oxygen_pci_probe);
373 void __devexit oxygen_pci_remove(struct pci_dev *pci)
375 snd_card_free(pci_get_drvdata(pci));
376 pci_set_drvdata(pci, NULL);
378 EXPORT_SYMBOL(oxygen_pci_remove);