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->spdif_input_bits_ctl) {
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->spdif_input_bits_ctl->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 snd_iprintf(buffer, "\nAC97\n");
146 for (i = 0; i < 0x80; i += 0x10) {
147 snd_iprintf(buffer, "%02x:", i);
148 for (j = 0; j < 0x10; j += 2)
149 snd_iprintf(buffer, " %04x",
150 oxygen_read_ac97(chip, 0, i + j));
151 snd_iprintf(buffer, "\n");
153 mutex_unlock(&chip->mutex);
156 static void __devinit oxygen_proc_init(struct oxygen *chip)
158 struct snd_info_entry *entry;
160 if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
161 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
164 #define oxygen_proc_init(chip)
167 static void __devinit oxygen_init(struct oxygen *chip)
171 chip->dac_routing = 1;
172 for (i = 0; i < 8; ++i)
173 chip->dac_volume[i] = 0xff;
174 chip->spdif_playback_enable = 1;
175 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
176 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
177 chip->spdif_pcm_bits = chip->spdif_bits;
179 if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
184 if (chip->revision == 1)
185 oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC);
187 oxygen_set_bits8(chip, OXYGEN_FUNCTION,
188 OXYGEN_FUNCTION_RESET_CODEC |
189 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
190 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a);
191 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a);
192 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a);
193 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
194 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
195 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
196 oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0xe100);
197 oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
198 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
199 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);
201 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
202 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
204 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00);
205 oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG,
206 OXYGEN_AC97_OUT_MAGIC3);
207 oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG,
208 OXYGEN_AC97_IN_MAGIC3);
209 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
211 oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300);
212 oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043);
213 oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f);
214 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
215 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
216 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
217 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
218 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
219 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
220 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
221 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
222 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
223 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
224 oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001);
225 /* power down unused ADCs and DACs */
226 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
227 AC97_PD_PR0 | AC97_PD_PR1);
228 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
229 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
232 static void oxygen_card_free(struct snd_card *card)
234 struct oxygen *chip = card->private_data;
236 spin_lock_irq(&chip->reg_lock);
237 chip->interrupt_mask = 0;
238 chip->pcm_running = 0;
239 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
240 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
241 spin_unlock_irq(&chip->reg_lock);
242 if (chip->irq >= 0) {
243 free_irq(chip->irq, chip);
244 synchronize_irq(chip->irq);
246 flush_scheduled_work();
247 chip->model->cleanup(chip);
248 mutex_destroy(&chip->mutex);
249 pci_release_regions(chip->pci);
250 pci_disable_device(chip->pci);
253 int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
254 const struct oxygen_model *model)
256 struct snd_card *card;
260 card = snd_card_new(index, id, model->owner, sizeof *chip);
264 chip = card->private_data;
269 spin_lock_init(&chip->reg_lock);
270 mutex_init(&chip->mutex);
271 INIT_WORK(&chip->spdif_input_bits_work,
272 oxygen_spdif_input_bits_changed);
274 err = pci_enable_device(pci);
278 err = pci_request_regions(pci, model->chip);
280 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
284 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
285 pci_resource_len(pci, 0) < 0x100) {
286 snd_printk(KERN_ERR "invalid PCI I/O range\n");
288 goto err_pci_regions;
290 chip->addr = pci_resource_start(pci, 0);
293 snd_card_set_dev(card, &pci->dev);
294 card->private_free = oxygen_card_free;
299 err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
302 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
305 chip->irq = pci->irq;
307 strcpy(card->driver, model->chip);
308 strcpy(card->shortname, model->shortname);
309 sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
310 model->longname, chip->revision, chip->addr, chip->irq);
311 strcpy(card->mixername, model->chip);
312 snd_component_add(card, model->chip);
314 err = oxygen_pcm_init(chip);
318 err = oxygen_mixer_init(chip);
322 if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) {
323 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
324 chip->addr + OXYGEN_MPU401,
325 MPU401_INFO_INTEGRATED, 0, 0,
331 oxygen_proc_init(chip);
333 spin_lock_irq(&chip->reg_lock);
334 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
335 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
336 spin_unlock_irq(&chip->reg_lock);
338 err = snd_card_register(card);
342 pci_set_drvdata(pci, card);
346 pci_release_regions(pci);
348 pci_disable_device(pci);
353 EXPORT_SYMBOL(oxygen_pci_probe);
355 void __devexit oxygen_pci_remove(struct pci_dev *pci)
357 snd_card_free(pci_get_drvdata(pci));
358 pci_set_drvdata(pci, NULL);
360 EXPORT_SYMBOL(oxygen_pci_remove);