| Message ID | 1454754349-28313-1-git-send-email-lars@metafoo.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sat, 06 Feb 2016 11:25:49 +0100, Lars-Peter Clausen wrote: > > The AU1X00 AC97 ALSA driver was deprecated in commit 7137c6bcb7ff ("ALSA: > deprecate MIPS AU1X00 AC97 driver") in favor of the newer and better ASoC > driver for the same hardware. This was almost 5 years ago and this driver > has not been in use in the mainline kernel since, it should be safe to > remove it at this point. > > Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Applied, thanks. Takashi > > diff --git a/sound/mips/Kconfig b/sound/mips/Kconfig > index 2153d31..4a47050 100644 > --- a/sound/mips/Kconfig > +++ b/sound/mips/Kconfig > @@ -23,17 +23,5 @@ config SND_SGI_HAL2 > help > Sound support for the SGI Indy and Indigo2 Workstation. > > - > -config SND_AU1X00 > - tristate "Au1x00 AC97 Port Driver (DEPRECATED)" > - depends on MIPS_ALCHEMY > - select SND_PCM > - select SND_AC97_CODEC > - help > - ALSA Sound driver for the Au1x00's AC97 port. > - > - Newer drivers for ASoC are available, please do not use > - this driver as it will be removed in the future. > - > endif # SND_MIPS > > diff --git a/sound/mips/Makefile b/sound/mips/Makefile > index 861ec0a..b977c44 100644 > --- a/sound/mips/Makefile > +++ b/sound/mips/Makefile > @@ -2,11 +2,9 @@ > # Makefile for ALSA > # > > -snd-au1x00-objs := au1x00.o > snd-sgi-o2-objs := sgio2audio.o ad1843.o > snd-sgi-hal2-objs := hal2.o > > # Toplevel Module Dependency > -obj-$(CONFIG_SND_AU1X00) += snd-au1x00.o > obj-$(CONFIG_SND_SGI_O2) += snd-sgi-o2.o > obj-$(CONFIG_SND_SGI_HAL2) += snd-sgi-hal2.o > diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c > deleted file mode 100644 > index 1e30e84..0000000 > --- a/sound/mips/au1x00.c > +++ /dev/null > @@ -1,734 +0,0 @@ > -/* > - * BRIEF MODULE DESCRIPTION > - * Driver for AMD Au1000 MIPS Processor, AC'97 Sound Port > - * > - * Copyright 2004 Cooper Street Innovations Inc. > - * Author: Charles Eidsness <charles@cooper-street.com> > - * > - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED > - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF > - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN > - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, > - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT > - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF > - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON > - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT > - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF > - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. > - * > - * 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., > - * 675 Mass Ave, Cambridge, MA 02139, USA. > - * > - * History: > - * > - * 2004-09-09 Charles Eidsness -- Original verion -- based on > - * sa11xx-uda1341.c ALSA driver and the > - * au1000.c OSS driver. > - * 2004-09-09 Matt Porter -- Added support for ALSA 1.0.6 > - * > - */ > - > -#include <linux/ioport.h> > -#include <linux/interrupt.h> > -#include <linux/init.h> > -#include <linux/platform_device.h> > -#include <linux/slab.h> > -#include <linux/module.h> > -#include <sound/core.h> > -#include <sound/initval.h> > -#include <sound/pcm.h> > -#include <sound/pcm_params.h> > -#include <sound/ac97_codec.h> > -#include <asm/mach-au1x00/au1000.h> > -#include <asm/mach-au1x00/au1000_dma.h> > - > -MODULE_AUTHOR("Charles Eidsness <charles@cooper-street.com>"); > -MODULE_DESCRIPTION("Au1000 AC'97 ALSA Driver"); > -MODULE_LICENSE("GPL"); > -MODULE_SUPPORTED_DEVICE("{{AMD,Au1000 AC'97}}"); > - > -#define PLAYBACK 0 > -#define CAPTURE 1 > -#define AC97_SLOT_3 0x01 > -#define AC97_SLOT_4 0x02 > -#define AC97_SLOT_6 0x08 > -#define AC97_CMD_IRQ 31 > -#define READ 0 > -#define WRITE 1 > -#define READ_WAIT 2 > -#define RW_DONE 3 > - > -struct au1000_period > -{ > - u32 start; > - u32 relative_end; /*realtive to start of buffer*/ > - struct au1000_period * next; > -}; > - > -/*Au1000 AC97 Port Control Reisters*/ > -struct au1000_ac97_reg { > - u32 volatile config; > - u32 volatile status; > - u32 volatile data; > - u32 volatile cmd; > - u32 volatile cntrl; > -}; > - > -struct audio_stream { > - struct snd_pcm_substream *substream; > - int dma; > - spinlock_t dma_lock; > - struct au1000_period * buffer; > - unsigned int period_size; > - unsigned int periods; > -}; > - > -struct snd_au1000 { > - struct snd_card *card; > - struct au1000_ac97_reg volatile *ac97_ioport; > - > - struct resource *ac97_res_port; > - spinlock_t ac97_lock; > - struct snd_ac97 *ac97; > - > - struct snd_pcm *pcm; > - struct audio_stream *stream[2]; /* playback & capture */ > - int dmaid[2]; /* tx(0)/rx(1) DMA ids */ > -}; > - > -/*--------------------------- Local Functions --------------------------------*/ > -static void > -au1000_set_ac97_xmit_slots(struct snd_au1000 *au1000, long xmit_slots) > -{ > - u32 volatile ac97_config; > - > - spin_lock(&au1000->ac97_lock); > - ac97_config = au1000->ac97_ioport->config; > - ac97_config = ac97_config & ~AC97C_XMIT_SLOTS_MASK; > - ac97_config |= (xmit_slots << AC97C_XMIT_SLOTS_BIT); > - au1000->ac97_ioport->config = ac97_config; > - spin_unlock(&au1000->ac97_lock); > -} > - > -static void > -au1000_set_ac97_recv_slots(struct snd_au1000 *au1000, long recv_slots) > -{ > - u32 volatile ac97_config; > - > - spin_lock(&au1000->ac97_lock); > - ac97_config = au1000->ac97_ioport->config; > - ac97_config = ac97_config & ~AC97C_RECV_SLOTS_MASK; > - ac97_config |= (recv_slots << AC97C_RECV_SLOTS_BIT); > - au1000->ac97_ioport->config = ac97_config; > - spin_unlock(&au1000->ac97_lock); > -} > - > - > -static void > -au1000_release_dma_link(struct audio_stream *stream) > -{ > - struct au1000_period * pointer; > - struct au1000_period * pointer_next; > - > - stream->period_size = 0; > - stream->periods = 0; > - pointer = stream->buffer; > - if (! pointer) > - return; > - do { > - pointer_next = pointer->next; > - kfree(pointer); > - pointer = pointer_next; > - } while (pointer != stream->buffer); > - stream->buffer = NULL; > -} > - > -static int > -au1000_setup_dma_link(struct audio_stream *stream, unsigned int period_bytes, > - unsigned int periods) > -{ > - struct snd_pcm_substream *substream = stream->substream; > - struct snd_pcm_runtime *runtime = substream->runtime; > - struct au1000_period *pointer; > - unsigned long dma_start; > - int i; > - > - dma_start = virt_to_phys(runtime->dma_area); > - > - if (stream->period_size == period_bytes && > - stream->periods == periods) > - return 0; /* not changed */ > - > - au1000_release_dma_link(stream); > - > - stream->period_size = period_bytes; > - stream->periods = periods; > - > - stream->buffer = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); > - if (! stream->buffer) > - return -ENOMEM; > - pointer = stream->buffer; > - for (i = 0; i < periods; i++) { > - pointer->start = (u32)(dma_start + (i * period_bytes)); > - pointer->relative_end = (u32) (((i+1) * period_bytes) - 0x1); > - if (i < periods - 1) { > - pointer->next = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); > - if (! pointer->next) { > - au1000_release_dma_link(stream); > - return -ENOMEM; > - } > - pointer = pointer->next; > - } > - } > - pointer->next = stream->buffer; > - return 0; > -} > - > -static void > -au1000_dma_stop(struct audio_stream *stream) > -{ > - if (snd_BUG_ON(!stream->buffer)) > - return; > - disable_dma(stream->dma); > -} > - > -static void > -au1000_dma_start(struct audio_stream *stream) > -{ > - if (snd_BUG_ON(!stream->buffer)) > - return; > - > - init_dma(stream->dma); > - if (get_dma_active_buffer(stream->dma) == 0) { > - clear_dma_done0(stream->dma); > - set_dma_addr0(stream->dma, stream->buffer->start); > - set_dma_count0(stream->dma, stream->period_size >> 1); > - set_dma_addr1(stream->dma, stream->buffer->next->start); > - set_dma_count1(stream->dma, stream->period_size >> 1); > - } else { > - clear_dma_done1(stream->dma); > - set_dma_addr1(stream->dma, stream->buffer->start); > - set_dma_count1(stream->dma, stream->period_size >> 1); > - set_dma_addr0(stream->dma, stream->buffer->next->start); > - set_dma_count0(stream->dma, stream->period_size >> 1); > - } > - enable_dma_buffers(stream->dma); > - start_dma(stream->dma); > -} > - > -static irqreturn_t > -au1000_dma_interrupt(int irq, void *dev_id) > -{ > - struct audio_stream *stream = (struct audio_stream *) dev_id; > - struct snd_pcm_substream *substream = stream->substream; > - > - spin_lock(&stream->dma_lock); > - switch (get_dma_buffer_done(stream->dma)) { > - case DMA_D0: > - stream->buffer = stream->buffer->next; > - clear_dma_done0(stream->dma); > - set_dma_addr0(stream->dma, stream->buffer->next->start); > - set_dma_count0(stream->dma, stream->period_size >> 1); > - enable_dma_buffer0(stream->dma); > - break; > - case DMA_D1: > - stream->buffer = stream->buffer->next; > - clear_dma_done1(stream->dma); > - set_dma_addr1(stream->dma, stream->buffer->next->start); > - set_dma_count1(stream->dma, stream->period_size >> 1); > - enable_dma_buffer1(stream->dma); > - break; > - case (DMA_D0 | DMA_D1): > - printk(KERN_ERR "DMA %d missed interrupt.\n",stream->dma); > - au1000_dma_stop(stream); > - au1000_dma_start(stream); > - break; > - case (~DMA_D0 & ~DMA_D1): > - printk(KERN_ERR "DMA %d empty irq.\n",stream->dma); > - } > - spin_unlock(&stream->dma_lock); > - snd_pcm_period_elapsed(substream); > - return IRQ_HANDLED; > -} > - > -/*-------------------------- PCM Audio Streams -------------------------------*/ > - > -static unsigned int rates[] = {8000, 11025, 16000, 22050}; > -static struct snd_pcm_hw_constraint_list hw_constraints_rates = { > - .count = ARRAY_SIZE(rates), > - .list = rates, > - .mask = 0, > -}; > - > -static struct snd_pcm_hardware snd_au1000_hw = > -{ > - .info = (SNDRV_PCM_INFO_INTERLEAVED | \ > - SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), > - .formats = SNDRV_PCM_FMTBIT_S16_LE, > - .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | > - SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050), > - .rate_min = 8000, > - .rate_max = 22050, > - .channels_min = 1, > - .channels_max = 2, > - .buffer_bytes_max = 128*1024, > - .period_bytes_min = 32, > - .period_bytes_max = 16*1024, > - .periods_min = 8, > - .periods_max = 255, > - .fifo_size = 16, > -}; > - > -static int > -snd_au1000_playback_open(struct snd_pcm_substream *substream) > -{ > - struct snd_au1000 *au1000 = substream->pcm->private_data; > - > - au1000->stream[PLAYBACK]->substream = substream; > - au1000->stream[PLAYBACK]->buffer = NULL; > - substream->private_data = au1000->stream[PLAYBACK]; > - substream->runtime->hw = snd_au1000_hw; > - return (snd_pcm_hw_constraint_list(substream->runtime, 0, > - SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); > -} > - > -static int > -snd_au1000_capture_open(struct snd_pcm_substream *substream) > -{ > - struct snd_au1000 *au1000 = substream->pcm->private_data; > - > - au1000->stream[CAPTURE]->substream = substream; > - au1000->stream[CAPTURE]->buffer = NULL; > - substream->private_data = au1000->stream[CAPTURE]; > - substream->runtime->hw = snd_au1000_hw; > - return (snd_pcm_hw_constraint_list(substream->runtime, 0, > - SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); > -} > - > -static int > -snd_au1000_playback_close(struct snd_pcm_substream *substream) > -{ > - struct snd_au1000 *au1000 = substream->pcm->private_data; > - > - au1000->stream[PLAYBACK]->substream = NULL; > - return 0; > -} > - > -static int > -snd_au1000_capture_close(struct snd_pcm_substream *substream) > -{ > - struct snd_au1000 *au1000 = substream->pcm->private_data; > - > - au1000->stream[CAPTURE]->substream = NULL; > - return 0; > -} > - > -static int > -snd_au1000_hw_params(struct snd_pcm_substream *substream, > - struct snd_pcm_hw_params *hw_params) > -{ > - struct audio_stream *stream = substream->private_data; > - int err; > - > - err = snd_pcm_lib_malloc_pages(substream, > - params_buffer_bytes(hw_params)); > - if (err < 0) > - return err; > - return au1000_setup_dma_link(stream, > - params_period_bytes(hw_params), > - params_periods(hw_params)); > -} > - > -static int > -snd_au1000_hw_free(struct snd_pcm_substream *substream) > -{ > - struct audio_stream *stream = substream->private_data; > - au1000_release_dma_link(stream); > - return snd_pcm_lib_free_pages(substream); > -} > - > -static int > -snd_au1000_playback_prepare(struct snd_pcm_substream *substream) > -{ > - struct snd_au1000 *au1000 = substream->pcm->private_data; > - struct snd_pcm_runtime *runtime = substream->runtime; > - > - if (runtime->channels == 1) > - au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_4); > - else > - au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); > - snd_ac97_set_rate(au1000->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate); > - return 0; > -} > - > -static int > -snd_au1000_capture_prepare(struct snd_pcm_substream *substream) > -{ > - struct snd_au1000 *au1000 = substream->pcm->private_data; > - struct snd_pcm_runtime *runtime = substream->runtime; > - > - if (runtime->channels == 1) > - au1000_set_ac97_recv_slots(au1000, AC97_SLOT_4); > - else > - au1000_set_ac97_recv_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); > - snd_ac97_set_rate(au1000->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate); > - return 0; > -} > - > -static int > -snd_au1000_trigger(struct snd_pcm_substream *substream, int cmd) > -{ > - struct audio_stream *stream = substream->private_data; > - int err = 0; > - > - spin_lock(&stream->dma_lock); > - switch (cmd) { > - case SNDRV_PCM_TRIGGER_START: > - au1000_dma_start(stream); > - break; > - case SNDRV_PCM_TRIGGER_STOP: > - au1000_dma_stop(stream); > - break; > - default: > - err = -EINVAL; > - break; > - } > - spin_unlock(&stream->dma_lock); > - return err; > -} > - > -static snd_pcm_uframes_t > -snd_au1000_pointer(struct snd_pcm_substream *substream) > -{ > - struct audio_stream *stream = substream->private_data; > - struct snd_pcm_runtime *runtime = substream->runtime; > - long location; > - > - spin_lock(&stream->dma_lock); > - location = get_dma_residue(stream->dma); > - spin_unlock(&stream->dma_lock); > - location = stream->buffer->relative_end - location; > - if (location == -1) > - location = 0; > - return bytes_to_frames(runtime,location); > -} > - > -static struct snd_pcm_ops snd_card_au1000_playback_ops = { > - .open = snd_au1000_playback_open, > - .close = snd_au1000_playback_close, > - .ioctl = snd_pcm_lib_ioctl, > - .hw_params = snd_au1000_hw_params, > - .hw_free = snd_au1000_hw_free, > - .prepare = snd_au1000_playback_prepare, > - .trigger = snd_au1000_trigger, > - .pointer = snd_au1000_pointer, > -}; > - > -static struct snd_pcm_ops snd_card_au1000_capture_ops = { > - .open = snd_au1000_capture_open, > - .close = snd_au1000_capture_close, > - .ioctl = snd_pcm_lib_ioctl, > - .hw_params = snd_au1000_hw_params, > - .hw_free = snd_au1000_hw_free, > - .prepare = snd_au1000_capture_prepare, > - .trigger = snd_au1000_trigger, > - .pointer = snd_au1000_pointer, > -}; > - > -static int > -snd_au1000_pcm_new(struct snd_au1000 *au1000) > -{ > - struct snd_pcm *pcm; > - int err; > - unsigned long flags; > - > - if ((err = snd_pcm_new(au1000->card, "AU1000 AC97 PCM", 0, 1, 1, &pcm)) < 0) > - return err; > - > - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, > - snd_dma_continuous_data(GFP_KERNEL), 128*1024, 128*1024); > - > - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, > - &snd_card_au1000_playback_ops); > - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, > - &snd_card_au1000_capture_ops); > - > - pcm->private_data = au1000; > - pcm->info_flags = 0; > - strcpy(pcm->name, "Au1000 AC97 PCM"); > - > - spin_lock_init(&au1000->stream[PLAYBACK]->dma_lock); > - spin_lock_init(&au1000->stream[CAPTURE]->dma_lock); > - > - flags = claim_dma_lock(); > - au1000->stream[PLAYBACK]->dma = request_au1000_dma(au1000->dmaid[0], > - "AC97 TX", au1000_dma_interrupt, 0, > - au1000->stream[PLAYBACK]); > - if (au1000->stream[PLAYBACK]->dma < 0) { > - release_dma_lock(flags); > - return -EBUSY; > - } > - au1000->stream[CAPTURE]->dma = request_au1000_dma(au1000->dmaid[1], > - "AC97 RX", au1000_dma_interrupt, 0, > - au1000->stream[CAPTURE]); > - if (au1000->stream[CAPTURE]->dma < 0){ > - release_dma_lock(flags); > - return -EBUSY; > - } > - /* enable DMA coherency in read/write DMA channels */ > - set_dma_mode(au1000->stream[PLAYBACK]->dma, > - get_dma_mode(au1000->stream[PLAYBACK]->dma) & ~DMA_NC); > - set_dma_mode(au1000->stream[CAPTURE]->dma, > - get_dma_mode(au1000->stream[CAPTURE]->dma) & ~DMA_NC); > - release_dma_lock(flags); > - au1000->pcm = pcm; > - return 0; > -} > - > - > -/*-------------------------- AC97 CODEC Control ------------------------------*/ > - > -static unsigned short > -snd_au1000_ac97_read(struct snd_ac97 *ac97, unsigned short reg) > -{ > - struct snd_au1000 *au1000 = ac97->private_data; > - u32 volatile cmd; > - u16 volatile data; > - int i; > - > - spin_lock(&au1000->ac97_lock); > -/* would rather use the interrupt than this polling but it works and I can't > -get the interrupt driven case to work efficiently */ > - for (i = 0; i < 0x5000; i++) > - if (!(au1000->ac97_ioport->status & AC97C_CP)) > - break; > - if (i == 0x5000) > - printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n"); > - > - cmd = (u32) reg & AC97C_INDEX_MASK; > - cmd |= AC97C_READ; > - au1000->ac97_ioport->cmd = cmd; > - > - /* now wait for the data */ > - for (i = 0; i < 0x5000; i++) > - if (!(au1000->ac97_ioport->status & AC97C_CP)) > - break; > - if (i == 0x5000) { > - printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n"); > - spin_unlock(&au1000->ac97_lock); > - return 0; > - } > - > - data = au1000->ac97_ioport->cmd & 0xffff; > - spin_unlock(&au1000->ac97_lock); > - > - return data; > - > -} > - > - > -static void > -snd_au1000_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) > -{ > - struct snd_au1000 *au1000 = ac97->private_data; > - u32 cmd; > - int i; > - > - spin_lock(&au1000->ac97_lock); > -/* would rather use the interrupt than this polling but it works and I can't > -get the interrupt driven case to work efficiently */ > - for (i = 0; i < 0x5000; i++) > - if (!(au1000->ac97_ioport->status & AC97C_CP)) > - break; > - if (i == 0x5000) > - printk(KERN_ERR "au1000 AC97: AC97 command write timeout\n"); > - > - cmd = (u32) reg & AC97C_INDEX_MASK; > - cmd &= ~AC97C_READ; > - cmd |= ((u32) val << AC97C_WD_BIT); > - au1000->ac97_ioport->cmd = cmd; > - spin_unlock(&au1000->ac97_lock); > -} > - > -/*------------------------------ Setup / Destroy ----------------------------*/ > - > -static void snd_au1000_free(struct snd_card *card) > -{ > - struct snd_au1000 *au1000 = card->private_data; > - > - if (au1000->stream[PLAYBACK]) { > - if (au1000->stream[PLAYBACK]->dma >= 0) > - free_au1000_dma(au1000->stream[PLAYBACK]->dma); > - kfree(au1000->stream[PLAYBACK]); > - } > - > - if (au1000->stream[CAPTURE]) { > - if (au1000->stream[CAPTURE]->dma >= 0) > - free_au1000_dma(au1000->stream[CAPTURE]->dma); > - kfree(au1000->stream[CAPTURE]); > - } > - > - if (au1000->ac97_res_port) { > - /* put internal AC97 block into reset */ > - if (au1000->ac97_ioport) { > - au1000->ac97_ioport->cntrl = AC97C_RS; > - iounmap(au1000->ac97_ioport); > - au1000->ac97_ioport = NULL; > - } > - release_and_free_resource(au1000->ac97_res_port); > - au1000->ac97_res_port = NULL; > - } > -} > - > -static struct snd_ac97_bus_ops ops = { > - .write = snd_au1000_ac97_write, > - .read = snd_au1000_ac97_read, > -}; > - > -static int au1000_ac97_probe(struct platform_device *pdev) > -{ > - int err; > - void __iomem *io; > - struct resource *r; > - struct snd_card *card; > - struct snd_au1000 *au1000; > - struct snd_ac97_bus *pbus; > - struct snd_ac97_template ac97; > - > - err = snd_card_new(&pdev->dev, -1, "AC97", THIS_MODULE, > - sizeof(struct snd_au1000), &card); > - if (err < 0) > - return err; > - > - au1000 = card->private_data; > - au1000->card = card; > - spin_lock_init(&au1000->ac97_lock); > - > - /* from here on let ALSA call the special freeing function */ > - card->private_free = snd_au1000_free; > - > - /* TX DMA ID */ > - r = platform_get_resource(pdev, IORESOURCE_DMA, 0); > - if (!r) { > - err = -ENODEV; > - snd_printk(KERN_INFO "no TX DMA platform resource!\n"); > - goto out; > - } > - au1000->dmaid[0] = r->start; > - > - /* RX DMA ID */ > - r = platform_get_resource(pdev, IORESOURCE_DMA, 1); > - if (!r) { > - err = -ENODEV; > - snd_printk(KERN_INFO "no RX DMA platform resource!\n"); > - goto out; > - } > - au1000->dmaid[1] = r->start; > - > - au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream), > - GFP_KERNEL); > - if (!au1000->stream[PLAYBACK]) { > - err = -ENOMEM; > - goto out; > - } > - au1000->stream[PLAYBACK]->dma = -1; > - > - au1000->stream[CAPTURE] = kmalloc(sizeof(struct audio_stream), > - GFP_KERNEL); > - if (!au1000->stream[CAPTURE]) { > - err = -ENOMEM; > - goto out; > - } > - au1000->stream[CAPTURE]->dma = -1; > - > - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); > - if (!r) { > - err = -ENODEV; > - goto out; > - } > - > - err = -EBUSY; > - au1000->ac97_res_port = request_mem_region(r->start, resource_size(r), > - pdev->name); > - if (!au1000->ac97_res_port) { > - snd_printk(KERN_ERR "ALSA AC97: can't grab AC97 port\n"); > - goto out; > - } > - > - io = ioremap(r->start, resource_size(r)); > - if (!io) > - goto out; > - > - au1000->ac97_ioport = (struct au1000_ac97_reg *)io; > - > - /* configure pins for AC'97 > - TODO: move to board_setup.c */ > - au_writel(au_readl(SYS_PINFUNC) & ~0x02, SYS_PINFUNC); > - > - /* Initialise Au1000's AC'97 Control Block */ > - au1000->ac97_ioport->cntrl = AC97C_RS | AC97C_CE; > - udelay(10); > - au1000->ac97_ioport->cntrl = AC97C_CE; > - udelay(10); > - > - /* Initialise External CODEC -- cold reset */ > - au1000->ac97_ioport->config = AC97C_RESET; > - udelay(10); > - au1000->ac97_ioport->config = 0x0; > - mdelay(5); > - > - /* Initialise AC97 middle-layer */ > - err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus); > - if (err < 0) > - goto out; > - > - memset(&ac97, 0, sizeof(ac97)); > - ac97.private_data = au1000; > - err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97); > - if (err < 0) > - goto out; > - > - err = snd_au1000_pcm_new(au1000); > - if (err < 0) > - goto out; > - > - strcpy(card->driver, "Au1000-AC97"); > - strcpy(card->shortname, "AMD Au1000-AC97"); > - sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver"); > - > - err = snd_card_register(card); > - if (err < 0) > - goto out; > - > - printk(KERN_INFO "ALSA AC97: Driver Initialized\n"); > - > - platform_set_drvdata(pdev, card); > - > - return 0; > - > - out: > - snd_card_free(card); > - return err; > -} > - > -static int au1000_ac97_remove(struct platform_device *pdev) > -{ > - return snd_card_free(platform_get_drvdata(pdev)); > -} > - > -struct platform_driver au1000_ac97c_driver = { > - .driver = { > - .name = "au1000-ac97c", > - .owner = THIS_MODULE, > - }, > - .probe = au1000_ac97_probe, > - .remove = au1000_ac97_remove, > -}; > - > -module_platform_driver(au1000_ac97c_driver); > -- > 2.1.4 > >
diff --git a/sound/mips/Kconfig b/sound/mips/Kconfig index 2153d31..4a47050 100644 --- a/sound/mips/Kconfig +++ b/sound/mips/Kconfig @@ -23,17 +23,5 @@ config SND_SGI_HAL2 help Sound support for the SGI Indy and Indigo2 Workstation. - -config SND_AU1X00 - tristate "Au1x00 AC97 Port Driver (DEPRECATED)" - depends on MIPS_ALCHEMY - select SND_PCM - select SND_AC97_CODEC - help - ALSA Sound driver for the Au1x00's AC97 port. - - Newer drivers for ASoC are available, please do not use - this driver as it will be removed in the future. - endif # SND_MIPS diff --git a/sound/mips/Makefile b/sound/mips/Makefile index 861ec0a..b977c44 100644 --- a/sound/mips/Makefile +++ b/sound/mips/Makefile @@ -2,11 +2,9 @@ # Makefile for ALSA # -snd-au1x00-objs := au1x00.o snd-sgi-o2-objs := sgio2audio.o ad1843.o snd-sgi-hal2-objs := hal2.o # Toplevel Module Dependency -obj-$(CONFIG_SND_AU1X00) += snd-au1x00.o obj-$(CONFIG_SND_SGI_O2) += snd-sgi-o2.o obj-$(CONFIG_SND_SGI_HAL2) += snd-sgi-hal2.o diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c deleted file mode 100644 index 1e30e84..0000000 --- a/sound/mips/au1x00.c +++ /dev/null @@ -1,734 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Driver for AMD Au1000 MIPS Processor, AC'97 Sound Port - * - * Copyright 2004 Cooper Street Innovations Inc. - * Author: Charles Eidsness <charles@cooper-street.com> - * - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - * History: - * - * 2004-09-09 Charles Eidsness -- Original verion -- based on - * sa11xx-uda1341.c ALSA driver and the - * au1000.c OSS driver. - * 2004-09-09 Matt Porter -- Added support for ALSA 1.0.6 - * - */ - -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <sound/core.h> -#include <sound/initval.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/ac97_codec.h> -#include <asm/mach-au1x00/au1000.h> -#include <asm/mach-au1x00/au1000_dma.h> - -MODULE_AUTHOR("Charles Eidsness <charles@cooper-street.com>"); -MODULE_DESCRIPTION("Au1000 AC'97 ALSA Driver"); -MODULE_LICENSE("GPL"); -MODULE_SUPPORTED_DEVICE("{{AMD,Au1000 AC'97}}"); - -#define PLAYBACK 0 -#define CAPTURE 1 -#define AC97_SLOT_3 0x01 -#define AC97_SLOT_4 0x02 -#define AC97_SLOT_6 0x08 -#define AC97_CMD_IRQ 31 -#define READ 0 -#define WRITE 1 -#define READ_WAIT 2 -#define RW_DONE 3 - -struct au1000_period -{ - u32 start; - u32 relative_end; /*realtive to start of buffer*/ - struct au1000_period * next; -}; - -/*Au1000 AC97 Port Control Reisters*/ -struct au1000_ac97_reg { - u32 volatile config; - u32 volatile status; - u32 volatile data; - u32 volatile cmd; - u32 volatile cntrl; -}; - -struct audio_stream { - struct snd_pcm_substream *substream; - int dma; - spinlock_t dma_lock; - struct au1000_period * buffer; - unsigned int period_size; - unsigned int periods; -}; - -struct snd_au1000 { - struct snd_card *card; - struct au1000_ac97_reg volatile *ac97_ioport; - - struct resource *ac97_res_port; - spinlock_t ac97_lock; - struct snd_ac97 *ac97; - - struct snd_pcm *pcm; - struct audio_stream *stream[2]; /* playback & capture */ - int dmaid[2]; /* tx(0)/rx(1) DMA ids */ -}; - -/*--------------------------- Local Functions --------------------------------*/ -static void -au1000_set_ac97_xmit_slots(struct snd_au1000 *au1000, long xmit_slots) -{ - u32 volatile ac97_config; - - spin_lock(&au1000->ac97_lock); - ac97_config = au1000->ac97_ioport->config; - ac97_config = ac97_config & ~AC97C_XMIT_SLOTS_MASK; - ac97_config |= (xmit_slots << AC97C_XMIT_SLOTS_BIT); - au1000->ac97_ioport->config = ac97_config; - spin_unlock(&au1000->ac97_lock); -} - -static void -au1000_set_ac97_recv_slots(struct snd_au1000 *au1000, long recv_slots) -{ - u32 volatile ac97_config; - - spin_lock(&au1000->ac97_lock); - ac97_config = au1000->ac97_ioport->config; - ac97_config = ac97_config & ~AC97C_RECV_SLOTS_MASK; - ac97_config |= (recv_slots << AC97C_RECV_SLOTS_BIT); - au1000->ac97_ioport->config = ac97_config; - spin_unlock(&au1000->ac97_lock); -} - - -static void -au1000_release_dma_link(struct audio_stream *stream) -{ - struct au1000_period * pointer; - struct au1000_period * pointer_next; - - stream->period_size = 0; - stream->periods = 0; - pointer = stream->buffer; - if (! pointer) - return; - do { - pointer_next = pointer->next; - kfree(pointer); - pointer = pointer_next; - } while (pointer != stream->buffer); - stream->buffer = NULL; -} - -static int -au1000_setup_dma_link(struct audio_stream *stream, unsigned int period_bytes, - unsigned int periods) -{ - struct snd_pcm_substream *substream = stream->substream; - struct snd_pcm_runtime *runtime = substream->runtime; - struct au1000_period *pointer; - unsigned long dma_start; - int i; - - dma_start = virt_to_phys(runtime->dma_area); - - if (stream->period_size == period_bytes && - stream->periods == periods) - return 0; /* not changed */ - - au1000_release_dma_link(stream); - - stream->period_size = period_bytes; - stream->periods = periods; - - stream->buffer = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); - if (! stream->buffer) - return -ENOMEM; - pointer = stream->buffer; - for (i = 0; i < periods; i++) { - pointer->start = (u32)(dma_start + (i * period_bytes)); - pointer->relative_end = (u32) (((i+1) * period_bytes) - 0x1); - if (i < periods - 1) { - pointer->next = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); - if (! pointer->next) { - au1000_release_dma_link(stream); - return -ENOMEM; - } - pointer = pointer->next; - } - } - pointer->next = stream->buffer; - return 0; -} - -static void -au1000_dma_stop(struct audio_stream *stream) -{ - if (snd_BUG_ON(!stream->buffer)) - return; - disable_dma(stream->dma); -} - -static void -au1000_dma_start(struct audio_stream *stream) -{ - if (snd_BUG_ON(!stream->buffer)) - return; - - init_dma(stream->dma); - if (get_dma_active_buffer(stream->dma) == 0) { - clear_dma_done0(stream->dma); - set_dma_addr0(stream->dma, stream->buffer->start); - set_dma_count0(stream->dma, stream->period_size >> 1); - set_dma_addr1(stream->dma, stream->buffer->next->start); - set_dma_count1(stream->dma, stream->period_size >> 1); - } else { - clear_dma_done1(stream->dma); - set_dma_addr1(stream->dma, stream->buffer->start); - set_dma_count1(stream->dma, stream->period_size >> 1); - set_dma_addr0(stream->dma, stream->buffer->next->start); - set_dma_count0(stream->dma, stream->period_size >> 1); - } - enable_dma_buffers(stream->dma); - start_dma(stream->dma); -} - -static irqreturn_t -au1000_dma_interrupt(int irq, void *dev_id) -{ - struct audio_stream *stream = (struct audio_stream *) dev_id; - struct snd_pcm_substream *substream = stream->substream; - - spin_lock(&stream->dma_lock); - switch (get_dma_buffer_done(stream->dma)) { - case DMA_D0: - stream->buffer = stream->buffer->next; - clear_dma_done0(stream->dma); - set_dma_addr0(stream->dma, stream->buffer->next->start); - set_dma_count0(stream->dma, stream->period_size >> 1); - enable_dma_buffer0(stream->dma); - break; - case DMA_D1: - stream->buffer = stream->buffer->next; - clear_dma_done1(stream->dma); - set_dma_addr1(stream->dma, stream->buffer->next->start); - set_dma_count1(stream->dma, stream->period_size >> 1); - enable_dma_buffer1(stream->dma); - break; - case (DMA_D0 | DMA_D1): - printk(KERN_ERR "DMA %d missed interrupt.\n",stream->dma); - au1000_dma_stop(stream); - au1000_dma_start(stream); - break; - case (~DMA_D0 & ~DMA_D1): - printk(KERN_ERR "DMA %d empty irq.\n",stream->dma); - } - spin_unlock(&stream->dma_lock); - snd_pcm_period_elapsed(substream); - return IRQ_HANDLED; -} - -/*-------------------------- PCM Audio Streams -------------------------------*/ - -static unsigned int rates[] = {8000, 11025, 16000, 22050}; -static struct snd_pcm_hw_constraint_list hw_constraints_rates = { - .count = ARRAY_SIZE(rates), - .list = rates, - .mask = 0, -}; - -static struct snd_pcm_hardware snd_au1000_hw = -{ - .info = (SNDRV_PCM_INFO_INTERLEAVED | \ - SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), - .formats = SNDRV_PCM_FMTBIT_S16_LE, - .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | - SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050), - .rate_min = 8000, - .rate_max = 22050, - .channels_min = 1, - .channels_max = 2, - .buffer_bytes_max = 128*1024, - .period_bytes_min = 32, - .period_bytes_max = 16*1024, - .periods_min = 8, - .periods_max = 255, - .fifo_size = 16, -}; - -static int -snd_au1000_playback_open(struct snd_pcm_substream *substream) -{ - struct snd_au1000 *au1000 = substream->pcm->private_data; - - au1000->stream[PLAYBACK]->substream = substream; - au1000->stream[PLAYBACK]->buffer = NULL; - substream->private_data = au1000->stream[PLAYBACK]; - substream->runtime->hw = snd_au1000_hw; - return (snd_pcm_hw_constraint_list(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); -} - -static int -snd_au1000_capture_open(struct snd_pcm_substream *substream) -{ - struct snd_au1000 *au1000 = substream->pcm->private_data; - - au1000->stream[CAPTURE]->substream = substream; - au1000->stream[CAPTURE]->buffer = NULL; - substream->private_data = au1000->stream[CAPTURE]; - substream->runtime->hw = snd_au1000_hw; - return (snd_pcm_hw_constraint_list(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); -} - -static int -snd_au1000_playback_close(struct snd_pcm_substream *substream) -{ - struct snd_au1000 *au1000 = substream->pcm->private_data; - - au1000->stream[PLAYBACK]->substream = NULL; - return 0; -} - -static int -snd_au1000_capture_close(struct snd_pcm_substream *substream) -{ - struct snd_au1000 *au1000 = substream->pcm->private_data; - - au1000->stream[CAPTURE]->substream = NULL; - return 0; -} - -static int -snd_au1000_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct audio_stream *stream = substream->private_data; - int err; - - err = snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); - if (err < 0) - return err; - return au1000_setup_dma_link(stream, - params_period_bytes(hw_params), - params_periods(hw_params)); -} - -static int -snd_au1000_hw_free(struct snd_pcm_substream *substream) -{ - struct audio_stream *stream = substream->private_data; - au1000_release_dma_link(stream); - return snd_pcm_lib_free_pages(substream); -} - -static int -snd_au1000_playback_prepare(struct snd_pcm_substream *substream) -{ - struct snd_au1000 *au1000 = substream->pcm->private_data; - struct snd_pcm_runtime *runtime = substream->runtime; - - if (runtime->channels == 1) - au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_4); - else - au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); - snd_ac97_set_rate(au1000->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate); - return 0; -} - -static int -snd_au1000_capture_prepare(struct snd_pcm_substream *substream) -{ - struct snd_au1000 *au1000 = substream->pcm->private_data; - struct snd_pcm_runtime *runtime = substream->runtime; - - if (runtime->channels == 1) - au1000_set_ac97_recv_slots(au1000, AC97_SLOT_4); - else - au1000_set_ac97_recv_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); - snd_ac97_set_rate(au1000->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate); - return 0; -} - -static int -snd_au1000_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct audio_stream *stream = substream->private_data; - int err = 0; - - spin_lock(&stream->dma_lock); - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - au1000_dma_start(stream); - break; - case SNDRV_PCM_TRIGGER_STOP: - au1000_dma_stop(stream); - break; - default: - err = -EINVAL; - break; - } - spin_unlock(&stream->dma_lock); - return err; -} - -static snd_pcm_uframes_t -snd_au1000_pointer(struct snd_pcm_substream *substream) -{ - struct audio_stream *stream = substream->private_data; - struct snd_pcm_runtime *runtime = substream->runtime; - long location; - - spin_lock(&stream->dma_lock); - location = get_dma_residue(stream->dma); - spin_unlock(&stream->dma_lock); - location = stream->buffer->relative_end - location; - if (location == -1) - location = 0; - return bytes_to_frames(runtime,location); -} - -static struct snd_pcm_ops snd_card_au1000_playback_ops = { - .open = snd_au1000_playback_open, - .close = snd_au1000_playback_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_au1000_hw_params, - .hw_free = snd_au1000_hw_free, - .prepare = snd_au1000_playback_prepare, - .trigger = snd_au1000_trigger, - .pointer = snd_au1000_pointer, -}; - -static struct snd_pcm_ops snd_card_au1000_capture_ops = { - .open = snd_au1000_capture_open, - .close = snd_au1000_capture_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_au1000_hw_params, - .hw_free = snd_au1000_hw_free, - .prepare = snd_au1000_capture_prepare, - .trigger = snd_au1000_trigger, - .pointer = snd_au1000_pointer, -}; - -static int -snd_au1000_pcm_new(struct snd_au1000 *au1000) -{ - struct snd_pcm *pcm; - int err; - unsigned long flags; - - if ((err = snd_pcm_new(au1000->card, "AU1000 AC97 PCM", 0, 1, 1, &pcm)) < 0) - return err; - - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data(GFP_KERNEL), 128*1024, 128*1024); - - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, - &snd_card_au1000_playback_ops); - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, - &snd_card_au1000_capture_ops); - - pcm->private_data = au1000; - pcm->info_flags = 0; - strcpy(pcm->name, "Au1000 AC97 PCM"); - - spin_lock_init(&au1000->stream[PLAYBACK]->dma_lock); - spin_lock_init(&au1000->stream[CAPTURE]->dma_lock); - - flags = claim_dma_lock(); - au1000->stream[PLAYBACK]->dma = request_au1000_dma(au1000->dmaid[0], - "AC97 TX", au1000_dma_interrupt, 0, - au1000->stream[PLAYBACK]); - if (au1000->stream[PLAYBACK]->dma < 0) { - release_dma_lock(flags); - return -EBUSY; - } - au1000->stream[CAPTURE]->dma = request_au1000_dma(au1000->dmaid[1], - "AC97 RX", au1000_dma_interrupt, 0, - au1000->stream[CAPTURE]); - if (au1000->stream[CAPTURE]->dma < 0){ - release_dma_lock(flags); - return -EBUSY; - } - /* enable DMA coherency in read/write DMA channels */ - set_dma_mode(au1000->stream[PLAYBACK]->dma, - get_dma_mode(au1000->stream[PLAYBACK]->dma) & ~DMA_NC); - set_dma_mode(au1000->stream[CAPTURE]->dma, - get_dma_mode(au1000->stream[CAPTURE]->dma) & ~DMA_NC); - release_dma_lock(flags); - au1000->pcm = pcm; - return 0; -} - - -/*-------------------------- AC97 CODEC Control ------------------------------*/ - -static unsigned short -snd_au1000_ac97_read(struct snd_ac97 *ac97, unsigned short reg) -{ - struct snd_au1000 *au1000 = ac97->private_data; - u32 volatile cmd; - u16 volatile data; - int i; - - spin_lock(&au1000->ac97_lock); -/* would rather use the interrupt than this polling but it works and I can't -get the interrupt driven case to work efficiently */ - for (i = 0; i < 0x5000; i++) - if (!(au1000->ac97_ioport->status & AC97C_CP)) - break; - if (i == 0x5000) - printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n"); - - cmd = (u32) reg & AC97C_INDEX_MASK; - cmd |= AC97C_READ; - au1000->ac97_ioport->cmd = cmd; - - /* now wait for the data */ - for (i = 0; i < 0x5000; i++) - if (!(au1000->ac97_ioport->status & AC97C_CP)) - break; - if (i == 0x5000) { - printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n"); - spin_unlock(&au1000->ac97_lock); - return 0; - } - - data = au1000->ac97_ioport->cmd & 0xffff; - spin_unlock(&au1000->ac97_lock); - - return data; - -} - - -static void -snd_au1000_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) -{ - struct snd_au1000 *au1000 = ac97->private_data; - u32 cmd; - int i; - - spin_lock(&au1000->ac97_lock); -/* would rather use the interrupt than this polling but it works and I can't -get the interrupt driven case to work efficiently */ - for (i = 0; i < 0x5000; i++) - if (!(au1000->ac97_ioport->status & AC97C_CP)) - break; - if (i == 0x5000) - printk(KERN_ERR "au1000 AC97: AC97 command write timeout\n"); - - cmd = (u32) reg & AC97C_INDEX_MASK; - cmd &= ~AC97C_READ; - cmd |= ((u32) val << AC97C_WD_BIT); - au1000->ac97_ioport->cmd = cmd; - spin_unlock(&au1000->ac97_lock); -} - -/*------------------------------ Setup / Destroy ----------------------------*/ - -static void snd_au1000_free(struct snd_card *card) -{ - struct snd_au1000 *au1000 = card->private_data; - - if (au1000->stream[PLAYBACK]) { - if (au1000->stream[PLAYBACK]->dma >= 0) - free_au1000_dma(au1000->stream[PLAYBACK]->dma); - kfree(au1000->stream[PLAYBACK]); - } - - if (au1000->stream[CAPTURE]) { - if (au1000->stream[CAPTURE]->dma >= 0) - free_au1000_dma(au1000->stream[CAPTURE]->dma); - kfree(au1000->stream[CAPTURE]); - } - - if (au1000->ac97_res_port) { - /* put internal AC97 block into reset */ - if (au1000->ac97_ioport) { - au1000->ac97_ioport->cntrl = AC97C_RS; - iounmap(au1000->ac97_ioport); - au1000->ac97_ioport = NULL; - } - release_and_free_resource(au1000->ac97_res_port); - au1000->ac97_res_port = NULL; - } -} - -static struct snd_ac97_bus_ops ops = { - .write = snd_au1000_ac97_write, - .read = snd_au1000_ac97_read, -}; - -static int au1000_ac97_probe(struct platform_device *pdev) -{ - int err; - void __iomem *io; - struct resource *r; - struct snd_card *card; - struct snd_au1000 *au1000; - struct snd_ac97_bus *pbus; - struct snd_ac97_template ac97; - - err = snd_card_new(&pdev->dev, -1, "AC97", THIS_MODULE, - sizeof(struct snd_au1000), &card); - if (err < 0) - return err; - - au1000 = card->private_data; - au1000->card = card; - spin_lock_init(&au1000->ac97_lock); - - /* from here on let ALSA call the special freeing function */ - card->private_free = snd_au1000_free; - - /* TX DMA ID */ - r = platform_get_resource(pdev, IORESOURCE_DMA, 0); - if (!r) { - err = -ENODEV; - snd_printk(KERN_INFO "no TX DMA platform resource!\n"); - goto out; - } - au1000->dmaid[0] = r->start; - - /* RX DMA ID */ - r = platform_get_resource(pdev, IORESOURCE_DMA, 1); - if (!r) { - err = -ENODEV; - snd_printk(KERN_INFO "no RX DMA platform resource!\n"); - goto out; - } - au1000->dmaid[1] = r->start; - - au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream), - GFP_KERNEL); - if (!au1000->stream[PLAYBACK]) { - err = -ENOMEM; - goto out; - } - au1000->stream[PLAYBACK]->dma = -1; - - au1000->stream[CAPTURE] = kmalloc(sizeof(struct audio_stream), - GFP_KERNEL); - if (!au1000->stream[CAPTURE]) { - err = -ENOMEM; - goto out; - } - au1000->stream[CAPTURE]->dma = -1; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) { - err = -ENODEV; - goto out; - } - - err = -EBUSY; - au1000->ac97_res_port = request_mem_region(r->start, resource_size(r), - pdev->name); - if (!au1000->ac97_res_port) { - snd_printk(KERN_ERR "ALSA AC97: can't grab AC97 port\n"); - goto out; - } - - io = ioremap(r->start, resource_size(r)); - if (!io) - goto out; - - au1000->ac97_ioport = (struct au1000_ac97_reg *)io; - - /* configure pins for AC'97 - TODO: move to board_setup.c */ - au_writel(au_readl(SYS_PINFUNC) & ~0x02, SYS_PINFUNC); - - /* Initialise Au1000's AC'97 Control Block */ - au1000->ac97_ioport->cntrl = AC97C_RS | AC97C_CE; - udelay(10); - au1000->ac97_ioport->cntrl = AC97C_CE; - udelay(10); - - /* Initialise External CODEC -- cold reset */ - au1000->ac97_ioport->config = AC97C_RESET; - udelay(10); - au1000->ac97_ioport->config = 0x0; - mdelay(5); - - /* Initialise AC97 middle-layer */ - err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus); - if (err < 0) - goto out; - - memset(&ac97, 0, sizeof(ac97)); - ac97.private_data = au1000; - err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97); - if (err < 0) - goto out; - - err = snd_au1000_pcm_new(au1000); - if (err < 0) - goto out; - - strcpy(card->driver, "Au1000-AC97"); - strcpy(card->shortname, "AMD Au1000-AC97"); - sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver"); - - err = snd_card_register(card); - if (err < 0) - goto out; - - printk(KERN_INFO "ALSA AC97: Driver Initialized\n"); - - platform_set_drvdata(pdev, card); - - return 0; - - out: - snd_card_free(card); - return err; -} - -static int au1000_ac97_remove(struct platform_device *pdev) -{ - return snd_card_free(platform_get_drvdata(pdev)); -} - -struct platform_driver au1000_ac97c_driver = { - .driver = { - .name = "au1000-ac97c", - .owner = THIS_MODULE, - }, - .probe = au1000_ac97_probe, - .remove = au1000_ac97_remove, -}; - -module_platform_driver(au1000_ac97c_driver);
The AU1X00 AC97 ALSA driver was deprecated in commit 7137c6bcb7ff ("ALSA: deprecate MIPS AU1X00 AC97 driver") in favor of the newer and better ASoC driver for the same hardware. This was almost 5 years ago and this driver has not been in use in the mainline kernel since, it should be safe to remove it at this point. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>