361 lines
10 KiB
C
361 lines
10 KiB
C
/*
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* C-Media CMI8788 driver - main driver module
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*
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* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
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*
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2.
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*
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* This driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this driver; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/mutex.h>
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#include <linux/pci.h>
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#include <sound/ac97_codec.h>
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#include <sound/asoundef.h>
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#include <sound/core.h>
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#include <sound/info.h>
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#include <sound/mpu401.h>
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#include <sound/pcm.h>
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#include "oxygen.h"
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MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
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MODULE_DESCRIPTION("C-Media CMI8788 helper library");
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MODULE_LICENSE("GPL");
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static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
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{
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struct oxygen *chip = dev_id;
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unsigned int status, clear, elapsed_streams, i;
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status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
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if (!status)
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return IRQ_NONE;
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spin_lock(&chip->reg_lock);
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clear = status & (OXYGEN_CHANNEL_A |
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OXYGEN_CHANNEL_B |
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OXYGEN_CHANNEL_C |
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OXYGEN_CHANNEL_SPDIF |
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OXYGEN_CHANNEL_MULTICH |
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OXYGEN_CHANNEL_AC97 |
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OXYGEN_INT_SPDIF_IN_CHANGE |
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OXYGEN_INT_GPIO);
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if (clear) {
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if (clear & OXYGEN_INT_SPDIF_IN_CHANGE)
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chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_CHANGE;
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oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
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chip->interrupt_mask & ~clear);
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oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
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chip->interrupt_mask);
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}
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elapsed_streams = status & chip->pcm_running;
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spin_unlock(&chip->reg_lock);
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for (i = 0; i < PCM_COUNT; ++i)
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if ((elapsed_streams & (1 << i)) && chip->streams[i])
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snd_pcm_period_elapsed(chip->streams[i]);
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if (status & OXYGEN_INT_SPDIF_IN_CHANGE) {
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spin_lock(&chip->reg_lock);
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i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
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if (i & OXYGEN_SPDIF_IN_CHANGE) {
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oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
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schedule_work(&chip->spdif_input_bits_work);
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}
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spin_unlock(&chip->reg_lock);
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}
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if (status & OXYGEN_INT_GPIO)
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;
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if ((status & OXYGEN_INT_MIDI) && chip->midi)
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snd_mpu401_uart_interrupt(0, chip->midi->private_data);
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return IRQ_HANDLED;
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}
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static void oxygen_spdif_input_bits_changed(struct work_struct *work)
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{
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struct oxygen *chip = container_of(work, struct oxygen,
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spdif_input_bits_work);
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spin_lock_irq(&chip->reg_lock);
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oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_IN_INVERT);
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spin_unlock_irq(&chip->reg_lock);
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msleep(1);
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if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
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& OXYGEN_SPDIF_IN_VALID)) {
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spin_lock_irq(&chip->reg_lock);
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oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL,
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OXYGEN_SPDIF_IN_INVERT);
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spin_unlock_irq(&chip->reg_lock);
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msleep(1);
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if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
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& OXYGEN_SPDIF_IN_VALID)) {
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spin_lock_irq(&chip->reg_lock);
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oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
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OXYGEN_SPDIF_IN_INVERT);
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spin_unlock_irq(&chip->reg_lock);
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}
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}
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if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
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spin_lock_irq(&chip->reg_lock);
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chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
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oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
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chip->interrupt_mask);
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spin_unlock_irq(&chip->reg_lock);
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snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
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&chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
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}
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}
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#ifdef CONFIG_PROC_FS
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static void oxygen_proc_read(struct snd_info_entry *entry,
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struct snd_info_buffer *buffer)
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{
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struct oxygen *chip = entry->private_data;
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int i, j;
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snd_iprintf(buffer, "CMI8788\n\n");
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for (i = 0; i < 0x100; i += 0x10) {
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snd_iprintf(buffer, "%02x:", i);
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for (j = 0; j < 0x10; ++j)
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snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
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snd_iprintf(buffer, "\n");
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}
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if (mutex_lock_interruptible(&chip->mutex) < 0)
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return;
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snd_iprintf(buffer, "\nAC97\n");
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for (i = 0; i < 0x80; i += 0x10) {
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snd_iprintf(buffer, "%02x:", i);
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for (j = 0; j < 0x10; j += 2)
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snd_iprintf(buffer, " %04x",
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oxygen_read_ac97(chip, 0, i + j));
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snd_iprintf(buffer, "\n");
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}
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mutex_unlock(&chip->mutex);
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}
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static void __devinit oxygen_proc_init(struct oxygen *chip)
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{
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struct snd_info_entry *entry;
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if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
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snd_info_set_text_ops(entry, chip, oxygen_proc_read);
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}
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#else
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#define oxygen_proc_init(chip)
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#endif
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static void __devinit oxygen_init(struct oxygen *chip)
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{
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unsigned int i;
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chip->dac_routing = 1;
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for (i = 0; i < 8; ++i)
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chip->dac_volume[i] = 0xff;
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chip->spdif_playback_enable = 1;
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chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
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(IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
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chip->spdif_pcm_bits = chip->spdif_bits;
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if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
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chip->revision = 2;
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else
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chip->revision = 1;
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if (chip->revision == 1)
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oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC);
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oxygen_set_bits8(chip, OXYGEN_FUNCTION,
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OXYGEN_FUNCTION_RESET_CODEC |
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OXYGEN_FUNCTION_ENABLE_SPI_4_5);
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oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a);
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oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a);
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oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a);
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oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
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oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
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oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
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oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0xe100);
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oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
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oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
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oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);
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oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
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oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
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oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00);
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oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG,
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OXYGEN_AC97_OUT_MAGIC3);
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oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG,
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OXYGEN_AC97_IN_MAGIC3);
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oxygen_write_ac97(chip, 0, AC97_RESET, 0);
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msleep(1);
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oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300);
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oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043);
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oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f);
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oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
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oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
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oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
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oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
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oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
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oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
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oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
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oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
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oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
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oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
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oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001);
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/* power down unused ADCs and DACs */
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oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
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AC97_PD_PR0 | AC97_PD_PR1);
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oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
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AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
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}
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static void oxygen_card_free(struct snd_card *card)
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{
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struct oxygen *chip = card->private_data;
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spin_lock_irq(&chip->reg_lock);
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chip->interrupt_mask = 0;
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chip->pcm_running = 0;
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oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
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oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
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spin_unlock_irq(&chip->reg_lock);
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if (chip->irq >= 0) {
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free_irq(chip->irq, chip);
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synchronize_irq(chip->irq);
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}
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flush_scheduled_work();
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chip->model->cleanup(chip);
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mutex_destroy(&chip->mutex);
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pci_release_regions(chip->pci);
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pci_disable_device(chip->pci);
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}
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int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
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const struct oxygen_model *model)
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{
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struct snd_card *card;
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struct oxygen *chip;
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int err;
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card = snd_card_new(index, id, model->owner, sizeof *chip);
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if (!card)
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return -ENOMEM;
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chip = card->private_data;
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chip->card = card;
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chip->pci = pci;
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chip->irq = -1;
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chip->model = model;
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spin_lock_init(&chip->reg_lock);
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mutex_init(&chip->mutex);
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INIT_WORK(&chip->spdif_input_bits_work,
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oxygen_spdif_input_bits_changed);
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err = pci_enable_device(pci);
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if (err < 0)
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goto err_card;
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err = pci_request_regions(pci, model->chip);
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if (err < 0) {
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snd_printk(KERN_ERR "cannot reserve PCI resources\n");
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goto err_pci_enable;
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}
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if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
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pci_resource_len(pci, 0) < 0x100) {
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snd_printk(KERN_ERR "invalid PCI I/O range\n");
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err = -ENXIO;
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goto err_pci_regions;
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}
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chip->addr = pci_resource_start(pci, 0);
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pci_set_master(pci);
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snd_card_set_dev(card, &pci->dev);
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card->private_free = oxygen_card_free;
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oxygen_init(chip);
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model->init(chip);
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err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
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model->chip, chip);
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if (err < 0) {
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snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
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goto err_card;
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}
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chip->irq = pci->irq;
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strcpy(card->driver, model->chip);
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strcpy(card->shortname, model->shortname);
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sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
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model->longname, chip->revision, chip->addr, chip->irq);
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strcpy(card->mixername, model->chip);
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snd_component_add(card, model->chip);
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err = oxygen_pcm_init(chip);
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if (err < 0)
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goto err_card;
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err = oxygen_mixer_init(chip);
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if (err < 0)
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goto err_card;
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if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) {
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err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
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chip->addr + OXYGEN_MPU401,
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MPU401_INFO_INTEGRATED, 0, 0,
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&chip->midi);
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if (err < 0)
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goto err_card;
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}
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oxygen_proc_init(chip);
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spin_lock_irq(&chip->reg_lock);
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chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
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oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
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spin_unlock_irq(&chip->reg_lock);
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err = snd_card_register(card);
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if (err < 0)
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goto err_card;
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pci_set_drvdata(pci, card);
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return 0;
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err_pci_regions:
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pci_release_regions(pci);
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err_pci_enable:
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pci_disable_device(pci);
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err_card:
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snd_card_free(card);
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return err;
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}
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EXPORT_SYMBOL(oxygen_pci_probe);
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void __devexit oxygen_pci_remove(struct pci_dev *pci)
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{
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snd_card_free(pci_get_drvdata(pci));
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pci_set_drvdata(pci, NULL);
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}
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EXPORT_SYMBOL(oxygen_pci_remove);
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