diff options
Diffstat (limited to 'sound/pci/emu10k1/emu10k1x.c')
| -rw-r--r-- | sound/pci/emu10k1/emu10k1x.c | 1635 |
1 files changed, 1635 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c new file mode 100644 index 00000000..47a651cb --- /dev/null +++ b/sound/pci/emu10k1/emu10k1x.c @@ -0,0 +1,1635 @@ +/* + * Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com> + * Driver EMU10K1X chips + * + * Parts of this code were adapted from audigyls.c driver which is + * Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk> + * + * BUGS: + * -- + * + * TODO: + * + * Chips (SB0200 model): + * - EMU10K1X-DBQ + * - STAC 9708T + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/pcm.h> +#include <sound/ac97_codec.h> +#include <sound/info.h> +#include <sound/rawmidi.h> + +MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>"); +MODULE_DESCRIPTION("EMU10K1X"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}"); + +// module parameters (see "Module Parameters") +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable the EMU10K1X soundcard."); + + +// some definitions were borrowed from emu10k1 driver as they seem to be the same +/************************************************************************************************/ +/* PCI function 0 registers, address = <val> + PCIBASE0 */ +/************************************************************************************************/ + +#define PTR 0x00 /* Indexed register set pointer register */ + /* NOTE: The CHANNELNUM and ADDRESS words can */ + /* be modified independently of each other. */ + +#define DATA 0x04 /* Indexed register set data register */ + +#define IPR 0x08 /* Global interrupt pending register */ + /* Clear pending interrupts by writing a 1 to */ + /* the relevant bits and zero to the other bits */ +#define IPR_MIDITRANSBUFEMPTY 0x00000001 /* MIDI UART transmit buffer empty */ +#define IPR_MIDIRECVBUFEMPTY 0x00000002 /* MIDI UART receive buffer empty */ +#define IPR_CH_0_LOOP 0x00000800 /* Channel 0 loop */ +#define IPR_CH_0_HALF_LOOP 0x00000100 /* Channel 0 half loop */ +#define IPR_CAP_0_LOOP 0x00080000 /* Channel capture loop */ +#define IPR_CAP_0_HALF_LOOP 0x00010000 /* Channel capture half loop */ + +#define INTE 0x0c /* Interrupt enable register */ +#define INTE_MIDITXENABLE 0x00000001 /* Enable MIDI transmit-buffer-empty interrupts */ +#define INTE_MIDIRXENABLE 0x00000002 /* Enable MIDI receive-buffer-empty interrupts */ +#define INTE_CH_0_LOOP 0x00000800 /* Channel 0 loop */ +#define INTE_CH_0_HALF_LOOP 0x00000100 /* Channel 0 half loop */ +#define INTE_CAP_0_LOOP 0x00080000 /* Channel capture loop */ +#define INTE_CAP_0_HALF_LOOP 0x00010000 /* Channel capture half loop */ + +#define HCFG 0x14 /* Hardware config register */ + +#define HCFG_LOCKSOUNDCACHE 0x00000008 /* 1 = Cancel bustmaster accesses to soundcache */ + /* NOTE: This should generally never be used. */ +#define HCFG_AUDIOENABLE 0x00000001 /* 0 = CODECs transmit zero-valued samples */ + /* Should be set to 1 when the EMU10K1 is */ + /* completely initialized. */ +#define GPIO 0x18 /* Defaults: 00001080-Analog, 00001000-SPDIF. */ + + +#define AC97DATA 0x1c /* AC97 register set data register (16 bit) */ + +#define AC97ADDRESS 0x1e /* AC97 register set address register (8 bit) */ + +/********************************************************************************************************/ +/* Emu10k1x pointer-offset register set, accessed through the PTR and DATA registers */ +/********************************************************************************************************/ +#define PLAYBACK_LIST_ADDR 0x00 /* Base DMA address of a list of pointers to each period/size */ + /* One list entry: 4 bytes for DMA address, + * 4 bytes for period_size << 16. + * One list entry is 8 bytes long. + * One list entry for each period in the buffer. + */ +#define PLAYBACK_LIST_SIZE 0x01 /* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000 */ +#define PLAYBACK_LIST_PTR 0x02 /* Pointer to the current period being played */ +#define PLAYBACK_DMA_ADDR 0x04 /* Playback DMA address */ +#define PLAYBACK_PERIOD_SIZE 0x05 /* Playback period size */ +#define PLAYBACK_POINTER 0x06 /* Playback period pointer. Sample currently in DAC */ +#define PLAYBACK_UNKNOWN1 0x07 +#define PLAYBACK_UNKNOWN2 0x08 + +/* Only one capture channel supported */ +#define CAPTURE_DMA_ADDR 0x10 /* Capture DMA address */ +#define CAPTURE_BUFFER_SIZE 0x11 /* Capture buffer size */ +#define CAPTURE_POINTER 0x12 /* Capture buffer pointer. Sample currently in ADC */ +#define CAPTURE_UNKNOWN 0x13 + +/* From 0x20 - 0x3f, last samples played on each channel */ + +#define TRIGGER_CHANNEL 0x40 /* Trigger channel playback */ +#define TRIGGER_CHANNEL_0 0x00000001 /* Trigger channel 0 */ +#define TRIGGER_CHANNEL_1 0x00000002 /* Trigger channel 1 */ +#define TRIGGER_CHANNEL_2 0x00000004 /* Trigger channel 2 */ +#define TRIGGER_CAPTURE 0x00000100 /* Trigger capture channel */ + +#define ROUTING 0x41 /* Setup sound routing ? */ +#define ROUTING_FRONT_LEFT 0x00000001 +#define ROUTING_FRONT_RIGHT 0x00000002 +#define ROUTING_REAR_LEFT 0x00000004 +#define ROUTING_REAR_RIGHT 0x00000008 +#define ROUTING_CENTER_LFE 0x00010000 + +#define SPCS0 0x42 /* SPDIF output Channel Status 0 register */ + +#define SPCS1 0x43 /* SPDIF output Channel Status 1 register */ + +#define SPCS2 0x44 /* SPDIF output Channel Status 2 register */ + +#define SPCS_CLKACCYMASK 0x30000000 /* Clock accuracy */ +#define SPCS_CLKACCY_1000PPM 0x00000000 /* 1000 parts per million */ +#define SPCS_CLKACCY_50PPM 0x10000000 /* 50 parts per million */ +#define SPCS_CLKACCY_VARIABLE 0x20000000 /* Variable accuracy */ +#define SPCS_SAMPLERATEMASK 0x0f000000 /* Sample rate */ +#define SPCS_SAMPLERATE_44 0x00000000 /* 44.1kHz sample rate */ +#define SPCS_SAMPLERATE_48 0x02000000 /* 48kHz sample rate */ +#define SPCS_SAMPLERATE_32 0x03000000 /* 32kHz sample rate */ +#define SPCS_CHANNELNUMMASK 0x00f00000 /* Channel number */ +#define SPCS_CHANNELNUM_UNSPEC 0x00000000 /* Unspecified channel number */ +#define SPCS_CHANNELNUM_LEFT 0x00100000 /* Left channel */ +#define SPCS_CHANNELNUM_RIGHT 0x00200000 /* Right channel */ +#define SPCS_SOURCENUMMASK 0x000f0000 /* Source number */ +#define SPCS_SOURCENUM_UNSPEC 0x00000000 /* Unspecified source number */ +#define SPCS_GENERATIONSTATUS 0x00008000 /* Originality flag (see IEC-958 spec) */ +#define SPCS_CATEGORYCODEMASK 0x00007f00 /* Category code (see IEC-958 spec) */ +#define SPCS_MODEMASK 0x000000c0 /* Mode (see IEC-958 spec) */ +#define SPCS_EMPHASISMASK 0x00000038 /* Emphasis */ +#define SPCS_EMPHASIS_NONE 0x00000000 /* No emphasis */ +#define SPCS_EMPHASIS_50_15 0x00000008 /* 50/15 usec 2 channel */ +#define SPCS_COPYRIGHT 0x00000004 /* Copyright asserted flag -- do not modify */ +#define SPCS_NOTAUDIODATA 0x00000002 /* 0 = Digital audio, 1 = not audio */ +#define SPCS_PROFESSIONAL 0x00000001 /* 0 = Consumer (IEC-958), 1 = pro (AES3-1992) */ + +#define SPDIF_SELECT 0x45 /* Enables SPDIF or Analogue outputs 0-Analogue, 0x700-SPDIF */ + +/* This is the MPU port on the card */ +#define MUDATA 0x47 +#define MUCMD 0x48 +#define MUSTAT MUCMD + +/* From 0x50 - 0x5f, last samples captured */ + +/** + * The hardware has 3 channels for playback and 1 for capture. + * - channel 0 is the front channel + * - channel 1 is the rear channel + * - channel 2 is the center/lfe channel + * Volume is controlled by the AC97 for the front and rear channels by + * the PCM Playback Volume, Sigmatel Surround Playback Volume and + * Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects + * the front/rear channel mixing in the REAR OUT jack. When using the + * 4-Speaker Stereo, both front and rear channels will be mixed in the + * REAR OUT. + * The center/lfe channel has no volume control and cannot be muted during + * playback. + */ + +struct emu10k1x_voice { + struct emu10k1x *emu; + int number; + int use; + + struct emu10k1x_pcm *epcm; +}; + +struct emu10k1x_pcm { + struct emu10k1x *emu; + struct snd_pcm_substream *substream; + struct emu10k1x_voice *voice; + unsigned short running; +}; + +struct emu10k1x_midi { + struct emu10k1x *emu; + struct snd_rawmidi *rmidi; + struct snd_rawmidi_substream *substream_input; + struct snd_rawmidi_substream *substream_output; + unsigned int midi_mode; + spinlock_t input_lock; + spinlock_t output_lock; + spinlock_t open_lock; + int tx_enable, rx_enable; + int port; + int ipr_tx, ipr_rx; + void (*interrupt)(struct emu10k1x *emu, unsigned int status); +}; + +// definition of the chip-specific record +struct emu10k1x { + struct snd_card *card; + struct pci_dev *pci; + + unsigned long port; + struct resource *res_port; + int irq; + + unsigned char revision; /* chip revision */ + unsigned int serial; /* serial number */ + unsigned short model; /* subsystem id */ + + spinlock_t emu_lock; + spinlock_t voice_lock; + + struct snd_ac97 *ac97; + struct snd_pcm *pcm; + + struct emu10k1x_voice voices[3]; + struct emu10k1x_voice capture_voice; + u32 spdif_bits[3]; // SPDIF out setup + + struct snd_dma_buffer dma_buffer; + + struct emu10k1x_midi midi; +}; + +/* hardware definition */ +static struct snd_pcm_hardware snd_emu10k1x_playback_hw = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (32*1024), + .period_bytes_min = 64, + .period_bytes_max = (16*1024), + .periods_min = 2, + .periods_max = 8, + .fifo_size = 0, +}; + +static struct snd_pcm_hardware snd_emu10k1x_capture_hw = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (32*1024), + .period_bytes_min = 64, + .period_bytes_max = (16*1024), + .periods_min = 2, + .periods_max = 2, + .fifo_size = 0, +}; + +static unsigned int snd_emu10k1x_ptr_read(struct emu10k1x * emu, + unsigned int reg, + unsigned int chn) +{ + unsigned long flags; + unsigned int regptr, val; + + regptr = (reg << 16) | chn; + + spin_lock_irqsave(&emu->emu_lock, flags); + outl(regptr, emu->port + PTR); + val = inl(emu->port + DATA); + spin_unlock_irqrestore(&emu->emu_lock, flags); + return val; +} + +static void snd_emu10k1x_ptr_write(struct emu10k1x *emu, + unsigned int reg, + unsigned int chn, + unsigned int data) +{ + unsigned int regptr; + unsigned long flags; + + regptr = (reg << 16) | chn; + + spin_lock_irqsave(&emu->emu_lock, flags); + outl(regptr, emu->port + PTR); + outl(data, emu->port + DATA); + spin_unlock_irqrestore(&emu->emu_lock, flags); +} + +static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb) +{ + unsigned long flags; + unsigned int intr_enable; + + spin_lock_irqsave(&emu->emu_lock, flags); + intr_enable = inl(emu->port + INTE) | intrenb; + outl(intr_enable, emu->port + INTE); + spin_unlock_irqrestore(&emu->emu_lock, flags); +} + +static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb) +{ + unsigned long flags; + unsigned int intr_enable; + + spin_lock_irqsave(&emu->emu_lock, flags); + intr_enable = inl(emu->port + INTE) & ~intrenb; + outl(intr_enable, emu->port + INTE); + spin_unlock_irqrestore(&emu->emu_lock, flags); +} + +static void snd_emu10k1x_gpio_write(struct emu10k1x *emu, unsigned int value) +{ + unsigned long flags; + + spin_lock_irqsave(&emu->emu_lock, flags); + outl(value, emu->port + GPIO); + spin_unlock_irqrestore(&emu->emu_lock, flags); +} + +static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime) +{ + kfree(runtime->private_data); +} + +static void snd_emu10k1x_pcm_interrupt(struct emu10k1x *emu, struct emu10k1x_voice *voice) +{ + struct emu10k1x_pcm *epcm; + + if ((epcm = voice->epcm) == NULL) + return; + if (epcm->substream == NULL) + return; +#if 0 + snd_printk(KERN_INFO "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n", + epcm->substream->ops->pointer(epcm->substream), + snd_pcm_lib_period_bytes(epcm->substream), + snd_pcm_lib_buffer_bytes(epcm->substream)); +#endif + snd_pcm_period_elapsed(epcm->substream); +} + +/* open callback */ +static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream) +{ + struct emu10k1x *chip = snd_pcm_substream_chip(substream); + struct emu10k1x_pcm *epcm; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) { + return err; + } + if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0) + return err; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + epcm->emu = chip; + epcm->substream = substream; + + runtime->private_data = epcm; + runtime->private_free = snd_emu10k1x_pcm_free_substream; + + runtime->hw = snd_emu10k1x_playback_hw; + + return 0; +} + +/* close callback */ +static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream) +{ + return 0; +} + +/* hw_params callback */ +static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + + if (! epcm->voice) { + epcm->voice = &epcm->emu->voices[substream->pcm->device]; + epcm->voice->use = 1; + epcm->voice->epcm = epcm; + } + + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +/* hw_free callback */ +static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm; + + if (runtime->private_data == NULL) + return 0; + + epcm = runtime->private_data; + + if (epcm->voice) { + epcm->voice->use = 0; + epcm->voice->epcm = NULL; + epcm->voice = NULL; + } + + return snd_pcm_lib_free_pages(substream); +} + +/* prepare callback */ +static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct emu10k1x *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + int voice = epcm->voice->number; + u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice); + u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size); + int i; + + for(i = 0; i < runtime->periods; i++) { + *table_base++=runtime->dma_addr+(i*period_size_bytes); + *table_base++=period_size_bytes<<16; + } + + snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice); + snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19); + snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0); + snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0); + snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0); + snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0); + snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr); + + snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16); + + return 0; +} + +/* trigger callback */ +static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct emu10k1x *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + int channel = epcm->voice->number; + int result = 0; + +// snd_printk(KERN_INFO "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n", (int)emu, cmd, (int)substream->ops->pointer(substream)); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + if(runtime->periods == 2) + snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel); + else + snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel); + epcm->running = 1; + snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel)); + break; + case SNDRV_PCM_TRIGGER_STOP: + epcm->running = 0; + snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel); + snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel)); + break; + default: + result = -EINVAL; + break; + } + return result; +} + +/* pointer callback */ +static snd_pcm_uframes_t +snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct emu10k1x *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + int channel = epcm->voice->number; + snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0; + + if (!epcm->running) + return 0; + + ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel); + ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel); + ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel); + + if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size)) + return 0; + + if (ptr3 != ptr4) + ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel); + ptr2 = bytes_to_frames(runtime, ptr1); + ptr2 += (ptr4 >> 3) * runtime->period_size; + ptr = ptr2; + + if (ptr >= runtime->buffer_size) + ptr -= runtime->buffer_size; + + return ptr; +} + +/* operators */ +static struct snd_pcm_ops snd_emu10k1x_playback_ops = { + .open = snd_emu10k1x_playback_open, + .close = snd_emu10k1x_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_emu10k1x_pcm_hw_params, + .hw_free = snd_emu10k1x_pcm_hw_free, + .prepare = snd_emu10k1x_pcm_prepare, + .trigger = snd_emu10k1x_pcm_trigger, + .pointer = snd_emu10k1x_pcm_pointer, +}; + +/* open_capture callback */ +static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream) +{ + struct emu10k1x *chip = snd_pcm_substream_chip(substream); + struct emu10k1x_pcm *epcm; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + return err; + if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0) + return err; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + + epcm->emu = chip; + epcm->substream = substream; + + runtime->private_data = epcm; + runtime->private_free = snd_emu10k1x_pcm_free_substream; + + runtime->hw = snd_emu10k1x_capture_hw; + + return 0; +} + +/* close callback */ +static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream) +{ + return 0; +} + +/* hw_params callback */ +static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + + if (! epcm->voice) { + if (epcm->emu->capture_voice.use) + return -EBUSY; + epcm->voice = &epcm->emu->capture_voice; + epcm->voice->epcm = epcm; + epcm->voice->use = 1; + } + + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +/* hw_free callback */ +static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + struct emu10k1x_pcm *epcm; + + if (runtime->private_data == NULL) + return 0; + epcm = runtime->private_data; + + if (epcm->voice) { + epcm->voice->use = 0; + epcm->voice->epcm = NULL; + epcm->voice = NULL; + } + + return snd_pcm_lib_free_pages(substream); +} + +/* prepare capture callback */ +static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream) +{ + struct emu10k1x *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr); + snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes + snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0); + snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0); + + return 0; +} + +/* trigger_capture callback */ +static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream, + int cmd) +{ + struct emu10k1x *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + int result = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP | + INTE_CAP_0_HALF_LOOP); + snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE); + epcm->running = 1; + break; + case SNDRV_PCM_TRIGGER_STOP: + epcm->running = 0; + snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP | + INTE_CAP_0_HALF_LOOP); + snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE)); + break; + default: + result = -EINVAL; + break; + } + return result; +} + +/* pointer_capture callback */ +static snd_pcm_uframes_t +snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream) +{ + struct emu10k1x *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct emu10k1x_pcm *epcm = runtime->private_data; + snd_pcm_uframes_t ptr; + + if (!epcm->running) + return 0; + + ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0)); + if (ptr >= runtime->buffer_size) + ptr -= runtime->buffer_size; + + return ptr; +} + +static struct snd_pcm_ops snd_emu10k1x_capture_ops = { + .open = snd_emu10k1x_pcm_open_capture, + .close = snd_emu10k1x_pcm_close_capture, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_emu10k1x_pcm_hw_params_capture, + .hw_free = snd_emu10k1x_pcm_hw_free_capture, + .prepare = snd_emu10k1x_pcm_prepare_capture, + .trigger = snd_emu10k1x_pcm_trigger_capture, + .pointer = snd_emu10k1x_pcm_pointer_capture, +}; + +static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97, + unsigned short reg) +{ + struct emu10k1x *emu = ac97->private_data; + unsigned long flags; + unsigned short val; + + spin_lock_irqsave(&emu->emu_lock, flags); + outb(reg, emu->port + AC97ADDRESS); + val = inw(emu->port + AC97DATA); + spin_unlock_irqrestore(&emu->emu_lock, flags); + return val; +} + +static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97, + unsigned short reg, unsigned short val) +{ + struct emu10k1x *emu = ac97->private_data; + unsigned long flags; + + spin_lock_irqsave(&emu->emu_lock, flags); + outb(reg, emu->port + AC97ADDRESS); + outw(val, emu->port + AC97DATA); + spin_unlock_irqrestore(&emu->emu_lock, flags); +} + +static int snd_emu10k1x_ac97(struct emu10k1x *chip) +{ + struct snd_ac97_bus *pbus; + struct snd_ac97_template ac97; + int err; + static struct snd_ac97_bus_ops ops = { + .write = snd_emu10k1x_ac97_write, + .read = snd_emu10k1x_ac97_read, + }; + + if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) + return err; + pbus->no_vra = 1; /* we don't need VRA */ + + memset(&ac97, 0, sizeof(ac97)); + ac97.private_data = chip; + ac97.scaps = AC97_SCAP_NO_SPDIF; + return snd_ac97_mixer(pbus, &ac97, &chip->ac97); +} + +static int snd_emu10k1x_free(struct emu10k1x *chip) +{ + snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0); + // disable interrupts + outl(0, chip->port + INTE); + // disable audio + outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG); + + /* release the irq */ + if (chip->irq >= 0) + free_irq(chip->irq, chip); + + // release the i/o port + release_and_free_resource(chip->res_port); + + // release the DMA + if (chip->dma_buffer.area) { + snd_dma_free_pages(&chip->dma_buffer); + } + + pci_disable_device(chip->pci); + + // release the data + kfree(chip); + return 0; +} + +static int snd_emu10k1x_dev_free(struct snd_device *device) +{ + struct emu10k1x *chip = device->device_data; + return snd_emu10k1x_free(chip); +} + +static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id) +{ + unsigned int status; + + struct emu10k1x *chip = dev_id; + struct emu10k1x_voice *pvoice = chip->voices; + int i; + int mask; + + status = inl(chip->port + IPR); + + if (! status) + return IRQ_NONE; + + // capture interrupt + if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) { + struct emu10k1x_voice *cap_voice = &chip->capture_voice; + if (cap_voice->use) + snd_emu10k1x_pcm_interrupt(chip, cap_voice); + else + snd_emu10k1x_intr_disable(chip, + INTE_CAP_0_LOOP | + INTE_CAP_0_HALF_LOOP); + } + + mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP; + for (i = 0; i < 3; i++) { + if (status & mask) { + if (pvoice->use) + snd_emu10k1x_pcm_interrupt(chip, pvoice); + else + snd_emu10k1x_intr_disable(chip, mask); + } + pvoice++; + mask <<= 1; + } + + if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) { + if (chip->midi.interrupt) + chip->midi.interrupt(chip, status); + else + snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE); + } + + // acknowledge the interrupt if necessary + outl(status, chip->port + IPR); + + // snd_printk(KERN_INFO "interrupt %08x\n", status); + return IRQ_HANDLED; +} + +static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm) +{ + struct snd_pcm *pcm; + int err; + int capture = 0; + + if (rpcm) + *rpcm = NULL; + if (device == 0) + capture = 1; + + if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0) + return err; + + pcm->private_data = emu; + + switch(device) { + case 0: + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops); + break; + case 1: + case 2: + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops); + break; + } + + pcm->info_flags = 0; + switch(device) { + case 0: + strcpy(pcm->name, "EMU10K1X Front"); + break; + case 1: + strcpy(pcm->name, "EMU10K1X Rear"); + break; + case 2: + strcpy(pcm->name, "EMU10K1X Center/LFE"); + break; + } + emu->pcm = pcm; + + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, + snd_dma_pci_data(emu->pci), + 32*1024, 32*1024); + + if (rpcm) + *rpcm = pcm; + + return 0; +} + +static int __devinit snd_emu10k1x_create(struct snd_card *card, + struct pci_dev *pci, + struct emu10k1x **rchip) +{ + struct emu10k1x *chip; + int err; + int ch; + static struct snd_device_ops ops = { + .dev_free = snd_emu10k1x_dev_free, + }; + + *rchip = NULL; + + if ((err = pci_enable_device(pci)) < 0) + return err; + if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 || + pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) { + snd_printk(KERN_ERR "error to set 28bit mask DMA\n"); + pci_disable_device(pci); + return -ENXIO; + } + + chip = kzalloc(sizeof(*chip), GFP_KERNEL); + if (chip == NULL) { + pci_disable_device(pci); + return -ENOMEM; + } + + chip->card = card; + chip->pci = pci; + chip->irq = -1; + + spin_lock_init(&chip->emu_lock); + spin_lock_init(&chip->voice_lock); + + chip->port = pci_resource_start(pci, 0); + if ((chip->res_port = request_region(chip->port, 8, + "EMU10K1X")) == NULL) { + snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port); + snd_emu10k1x_free(chip); + return -EBUSY; + } + + if (request_irq(pci->irq, snd_emu10k1x_interrupt, + IRQF_SHARED, KBUILD_MODNAME, chip)) { + snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq); + snd_emu10k1x_free(chip); + return -EBUSY; + } + chip->irq = pci->irq; + + if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci), + 4 * 1024, &chip->dma_buffer) < 0) { + snd_emu10k1x_free(chip); + return -ENOMEM; + } + + pci_set_master(pci); + /* read revision & serial */ + chip->revision = pci->revision; + pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial); + pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model); + snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model, + chip->revision, chip->serial); + + outl(0, chip->port + INTE); + + for(ch = 0; ch < 3; ch++) { + chip->voices[ch].emu = chip; + chip->voices[ch].number = ch; + } + + /* + * Init to 0x02109204 : + * Clock accuracy = 0 (1000ppm) + * Sample Rate = 2 (48kHz) + * Audio Channel = 1 (Left of 2) + * Source Number = 0 (Unspecified) + * Generation Status = 1 (Original for Cat Code 12) + * Cat Code = 12 (Digital Signal Mixer) + * Mode = 0 (Mode 0) + * Emphasis = 0 (None) + * CP = 1 (Copyright unasserted) + * AN = 0 (Audio data) + * P = 0 (Consumer) + */ + snd_emu10k1x_ptr_write(chip, SPCS0, 0, + chip->spdif_bits[0] = + SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 | + SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC | + SPCS_GENERATIONSTATUS | 0x00001200 | + 0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT); + snd_emu10k1x_ptr_write(chip, SPCS1, 0, + chip->spdif_bits[1] = + SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 | + SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC | + SPCS_GENERATIONSTATUS | 0x00001200 | + 0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT); + snd_emu10k1x_ptr_write(chip, SPCS2, 0, + chip->spdif_bits[2] = + SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 | + SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC | + SPCS_GENERATIONSTATUS | 0x00001200 | + 0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT); + + snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF + snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing + snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode + + outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG); + + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, + chip, &ops)) < 0) { + snd_emu10k1x_free(chip); + return err; + } + *rchip = chip; + return 0; +} + +static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct emu10k1x *emu = entry->private_data; + unsigned long value,value1,value2; + unsigned long flags; + int i; + + snd_iprintf(buffer, "Registers:\n\n"); + for(i = 0; i < 0x20; i+=4) { + spin_lock_irqsave(&emu->emu_lock, flags); + value = inl(emu->port + i); + spin_unlock_irqrestore(&emu->emu_lock, flags); + snd_iprintf(buffer, "Register %02X: %08lX\n", i, value); + } + snd_iprintf(buffer, "\nRegisters\n\n"); + for(i = 0; i <= 0x48; i++) { + value = snd_emu10k1x_ptr_read(emu, i, 0); + if(i < 0x10 || (i >= 0x20 && i < 0x40)) { + value1 = snd_emu10k1x_ptr_read(emu, i, 1); + value2 = snd_emu10k1x_ptr_read(emu, i, 2); + snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2); + } else { + snd_iprintf(buffer, "%02X: %08lX\n", i, value); + } + } +} + +static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct emu10k1x *emu = entry->private_data; + char line[64]; + unsigned int reg, channel_id , val; + + while (!snd_info_get_line(buffer, line, sizeof(line))) { + if (sscanf(line, "%x %x %x", ®, &channel_id, &val) != 3) + continue; + + if (reg < 0x49 && val <= 0xffffffff && channel_id <= 2) + snd_emu10k1x_ptr_write(emu, reg, channel_id, val); + } +} + +static int __devinit snd_emu10k1x_proc_init(struct emu10k1x * emu) +{ + struct snd_info_entry *entry; + + if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) { + snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read); + entry->c.text.write = snd_emu10k1x_proc_reg_write; + entry->mode |= S_IWUSR; + entry->private_data = emu; + } + + return 0; +} + +#define snd_emu10k1x_shared_spdif_info snd_ctl_boolean_mono_info + +static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct emu10k1x *emu = snd_kcontrol_chip(kcontrol); + + ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1; + + return 0; +} + +static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct emu10k1x *emu = snd_kcontrol_chip(kcontrol); + unsigned int val; + int change = 0; + + val = ucontrol->value.integer.value[0] ; + + if (val) { + // enable spdif output + snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000); + snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700); + snd_emu10k1x_gpio_write(emu, 0x1000); + } else { + // disable spdif output + snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700); + snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F); + snd_emu10k1x_gpio_write(emu, 0x1080); + } + return change; +} + +static struct snd_kcontrol_new snd_emu10k1x_shared_spdif __devinitdata = +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Analog/Digital Output Jack", + .info = snd_emu10k1x_shared_spdif_info, + .get = snd_emu10k1x_shared_spdif_get, + .put = snd_emu10k1x_shared_spdif_put +}; + +static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; + uinfo->count = 1; + return 0; +} + +static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct emu10k1x *emu = snd_kcontrol_chip(kcontrol); + unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); + + ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff; + ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff; + ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff; + ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff; + return 0; +} + +static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.iec958.status[0] = 0xff; + ucontrol->value.iec958.status[1] = 0xff; + ucontrol->value.iec958.status[2] = 0xff; + ucontrol->value.iec958.status[3] = 0xff; + return 0; +} + +static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct emu10k1x *emu = snd_kcontrol_chip(kcontrol); + unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); + int change; + unsigned int val; + + val = (ucontrol->value.iec958.status[0] << 0) | + (ucontrol->value.iec958.status[1] << 8) | + (ucontrol->value.iec958.status[2] << 16) | + (ucontrol->value.iec958.status[3] << 24); + change = val != emu->spdif_bits[idx]; + if (change) { + snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val); + emu->spdif_bits[idx] = val; + } + return change; +} + +static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control = +{ + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK), + .count = 3, + .info = snd_emu10k1x_spdif_info, + .get = snd_emu10k1x_spdif_get_mask +}; + +static struct snd_kcontrol_new snd_emu10k1x_spdif_control = +{ + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT), + .count = 3, + .info = snd_emu10k1x_spdif_info, + .get = snd_emu10k1x_spdif_get, + .put = snd_emu10k1x_spdif_put +}; + +static int __devinit snd_emu10k1x_mixer(struct emu10k1x *emu) +{ + int err; + struct snd_kcontrol *kctl; + struct snd_card *card = emu->card; + + if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL) + return -ENOMEM; + if ((err = snd_ctl_add(card, kctl))) + return err; + if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL) + return -ENOMEM; + if ((err = snd_ctl_add(card, kctl))) + return err; + if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL) + return -ENOMEM; + if ((err = snd_ctl_add(card, kctl))) + return err; + + return 0; +} + +#define EMU10K1X_MIDI_MODE_INPUT (1<<0) +#define EMU10K1X_MIDI_MODE_OUTPUT (1<<1) + +static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx) +{ + return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0); +} + +static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx) +{ + snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data); +} + +#define mpu401_write_data(emu, mpu, data) mpu401_write(emu, mpu, data, 0) +#define mpu401_write_cmd(emu, mpu, data) mpu401_write(emu, mpu, data, 1) +#define mpu401_read_data(emu, mpu) mpu401_read(emu, mpu, 0) +#define mpu401_read_stat(emu, mpu) mpu401_read(emu, mpu, 1) + +#define mpu401_input_avail(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x80)) +#define mpu401_output_ready(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x40)) + +#define MPU401_RESET 0xff +#define MPU401_ENTER_UART 0x3f +#define MPU401_ACK 0xfe + +static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu) +{ + int timeout = 100000; + for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--) + mpu401_read_data(emu, mpu); +#ifdef CONFIG_SND_DEBUG + if (timeout <= 0) + snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu)); +#endif +} + +/* + + */ + +static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu, + struct emu10k1x_midi *midi, unsigned int status) +{ + unsigned char byte; + + if (midi->rmidi == NULL) { + snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable); + return; + } + + spin_lock(&midi->input_lock); + if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) { + if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) { + mpu401_clear_rx(emu, midi); + } else { + byte = mpu401_read_data(emu, midi); + if (midi->substream_input) + snd_rawmidi_receive(midi->substream_input, &byte, 1); + } + } + spin_unlock(&midi->input_lock); + + spin_lock(&midi->output_lock); + if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) { + if (midi->substream_output && + snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) { + mpu401_write_data(emu, midi, byte); + } else { + snd_emu10k1x_intr_disable(emu, midi->tx_enable); + } + } + spin_unlock(&midi->output_lock); +} + +static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status) +{ + do_emu10k1x_midi_interrupt(emu, &emu->midi, status); +} + +static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu, + struct emu10k1x_midi *midi, unsigned char cmd, int ack) +{ + unsigned long flags; + int timeout, ok; + + spin_lock_irqsave(&midi->input_lock, flags); + mpu401_write_data(emu, midi, 0x00); + /* mpu401_clear_rx(emu, midi); */ + + mpu401_write_cmd(emu, midi, cmd); + if (ack) { + ok = 0; + timeout = 10000; + while (!ok && timeout-- > 0) { + if (mpu401_input_avail(emu, midi)) { + if (mpu401_read_data(emu, midi) == MPU401_ACK) + ok = 1; + } + } + if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK) + ok = 1; + } else { + ok = 1; + } + spin_unlock_irqrestore(&midi->input_lock, flags); + if (!ok) { + snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n", + cmd, emu->port, + mpu401_read_stat(emu, midi), + mpu401_read_data(emu, midi)); + return 1; + } + return 0; +} + +static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream) +{ + struct emu10k1x *emu; + struct emu10k1x_midi *midi = substream->rmidi->private_data; + unsigned long flags; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT; + midi->substream_input = substream; + if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1)) + goto error_out; + if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1)) + goto error_out; + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return 0; + +error_out: + return -EIO; +} + +static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream) +{ + struct emu10k1x *emu; + struct emu10k1x_midi *midi = substream->rmidi->private_data; + unsigned long flags; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT; + midi->substream_output = substream; + if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1)) + goto error_out; + if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1)) + goto error_out; + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return 0; + +error_out: + return -EIO; +} + +static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream) +{ + struct emu10k1x *emu; + struct emu10k1x_midi *midi = substream->rmidi->private_data; + unsigned long flags; + int err = 0; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + snd_emu10k1x_intr_disable(emu, midi->rx_enable); + midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT; + midi->substream_input = NULL; + if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0); + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return err; +} + +static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream) +{ + struct emu10k1x *emu; + struct emu10k1x_midi *midi = substream->rmidi->private_data; + unsigned long flags; + int err = 0; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + snd_emu10k1x_intr_disable(emu, midi->tx_enable); + midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT; + midi->substream_output = NULL; + if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0); + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return err; +} + +static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) +{ + struct emu10k1x *emu; + struct emu10k1x_midi *midi = substream->rmidi->private_data; + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return; + + if (up) + snd_emu10k1x_intr_enable(emu, midi->rx_enable); + else + snd_emu10k1x_intr_disable(emu, midi->rx_enable); +} + +static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) +{ + struct emu10k1x *emu; + struct emu10k1x_midi *midi = substream->rmidi->private_data; + unsigned long flags; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return; + + if (up) { + int max = 4; + unsigned char byte; + + /* try to send some amount of bytes here before interrupts */ + spin_lock_irqsave(&midi->output_lock, flags); + while (max > 0) { + if (mpu401_output_ready(emu, midi)) { + if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) || + snd_rawmidi_transmit(substream, &byte, 1) != 1) { + /* no more data */ + spin_unlock_irqrestore(&midi->output_lock, flags); + return; + } + mpu401_write_data(emu, midi, byte); + max--; + } else { + break; + } + } + spin_unlock_irqrestore(&midi->output_lock, flags); + snd_emu10k1x_intr_enable(emu, midi->tx_enable); + } else { + snd_emu10k1x_intr_disable(emu, midi->tx_enable); + } +} + +/* + + */ + +static struct snd_rawmidi_ops snd_emu10k1x_midi_output = +{ + .open = snd_emu10k1x_midi_output_open, + .close = snd_emu10k1x_midi_output_close, + .trigger = snd_emu10k1x_midi_output_trigger, +}; + +static struct snd_rawmidi_ops snd_emu10k1x_midi_input = +{ + .open = snd_emu10k1x_midi_input_open, + .close = snd_emu10k1x_midi_input_close, + .trigger = snd_emu10k1x_midi_input_trigger, +}; + +static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi) +{ + struct emu10k1x_midi *midi = rmidi->private_data; + midi->interrupt = NULL; + midi->rmidi = NULL; +} + +static int __devinit emu10k1x_midi_init(struct emu10k1x *emu, + struct emu10k1x_midi *midi, int device, char *name) +{ + struct snd_rawmidi *rmidi; + int err; + + if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0) + return err; + midi->emu = emu; + spin_lock_init(&midi->open_lock); + spin_lock_init(&midi->input_lock); + spin_lock_init(&midi->output_lock); + strcpy(rmidi->name, name); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input); + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | + SNDRV_RAWMIDI_INFO_INPUT | + SNDRV_RAWMIDI_INFO_DUPLEX; + rmidi->private_data = midi; + rmidi->private_free = snd_emu10k1x_midi_free; + midi->rmidi = rmidi; + return 0; +} + +static int __devinit snd_emu10k1x_midi(struct emu10k1x *emu) +{ + struct emu10k1x_midi *midi = &emu->midi; + int err; + + if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0) + return err; + + midi->tx_enable = INTE_MIDITXENABLE; + midi->rx_enable = INTE_MIDIRXENABLE; + midi->port = MUDATA; + midi->ipr_tx = IPR_MIDITRANSBUFEMPTY; + midi->ipr_rx = IPR_MIDIRECVBUFEMPTY; + midi->interrupt = snd_emu10k1x_midi_interrupt; + return 0; +} + +static int __devinit snd_emu10k1x_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + struct snd_card *card; + struct emu10k1x *chip; + int err; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card); + if (err < 0) + return err; + + if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) { + snd_card_free(card); + return err; + } + + if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) { + snd_card_free(card); + return err; + } + if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) { + snd_card_free(card); + return err; + } + if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) { + snd_card_free(card); + return err; + } + + if ((err = snd_emu10k1x_ac97(chip)) < 0) { + snd_card_free(card); + return err; + } + + if ((err = snd_emu10k1x_mixer(chip)) < 0) { + snd_card_free(card); + return err; + } + + if ((err = snd_emu10k1x_midi(chip)) < 0) { + snd_card_free(card); + return err; + } + + snd_emu10k1x_proc_init(chip); + + strcpy(card->driver, "EMU10K1X"); + strcpy(card->shortname, "Dell Sound Blaster Live!"); + sprintf(card->longname, "%s at 0x%lx irq %i", + card->shortname, chip->port, chip->irq); + + snd_card_set_dev(card, &pci->dev); + + if ((err = snd_card_register(card)) < 0) { + snd_card_free(card); + return err; + } + + pci_set_drvdata(pci, card); + dev++; + return 0; +} + +static void __devexit snd_emu10k1x_remove(struct pci_dev *pci) +{ + snd_card_free(pci_get_drvdata(pci)); + pci_set_drvdata(pci, NULL); +} + +// PCI IDs +static DEFINE_PCI_DEVICE_TABLE(snd_emu10k1x_ids) = { + { PCI_VDEVICE(CREATIVE, 0x0006), 0 }, /* Dell OEM version (EMU10K1) */ + { 0, } +}; +MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids); + +// pci_driver definition +static struct pci_driver driver = { + .name = KBUILD_MODNAME, + .id_table = snd_emu10k1x_ids, + .probe = snd_emu10k1x_probe, + .remove = __devexit_p(snd_emu10k1x_remove), +}; + +// initialization of the module +static int __init alsa_card_emu10k1x_init(void) +{ + return pci_register_driver(&driver); +} + +// clean up the module +static void __exit alsa_card_emu10k1x_exit(void) +{ + pci_unregister_driver(&driver); +} + +module_init(alsa_card_emu10k1x_init) +module_exit(alsa_card_emu10k1x_exit) |