ALSA: Remove deprecated AU1X00 AC97 driver
The AU1X00 AC97 ALSA driver was deprecated in commit 7137c6bcb7 ("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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lars-Peter Clausen
Takashi Iwai
parent
c9e9daccc7
commit
efd931d6c7
3 changed files with 0 additions and 748 deletions
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@ -23,17 +23,5 @@ config SND_SGI_HAL2
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help
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help
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Sound support for the SGI Indy and Indigo2 Workstation.
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Sound support for the SGI Indy and Indigo2 Workstation.
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config SND_AU1X00
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tristate "Au1x00 AC97 Port Driver (DEPRECATED)"
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depends on MIPS_ALCHEMY
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select SND_PCM
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select SND_AC97_CODEC
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help
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ALSA Sound driver for the Au1x00's AC97 port.
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Newer drivers for ASoC are available, please do not use
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this driver as it will be removed in the future.
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endif # SND_MIPS
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endif # SND_MIPS
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@ -2,11 +2,9 @@
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# Makefile for ALSA
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# Makefile for ALSA
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#
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#
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snd-au1x00-objs := au1x00.o
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snd-sgi-o2-objs := sgio2audio.o ad1843.o
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snd-sgi-o2-objs := sgio2audio.o ad1843.o
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snd-sgi-hal2-objs := hal2.o
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snd-sgi-hal2-objs := hal2.o
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# Toplevel Module Dependency
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# Toplevel Module Dependency
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obj-$(CONFIG_SND_AU1X00) += snd-au1x00.o
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obj-$(CONFIG_SND_SGI_O2) += snd-sgi-o2.o
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obj-$(CONFIG_SND_SGI_O2) += snd-sgi-o2.o
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obj-$(CONFIG_SND_SGI_HAL2) += snd-sgi-hal2.o
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obj-$(CONFIG_SND_SGI_HAL2) += snd-sgi-hal2.o
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@ -1,734 +0,0 @@
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/*
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* BRIEF MODULE DESCRIPTION
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* Driver for AMD Au1000 MIPS Processor, AC'97 Sound Port
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*
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* Copyright 2004 Cooper Street Innovations Inc.
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* Author: Charles Eidsness <charles@cooper-street.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* History:
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*
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* 2004-09-09 Charles Eidsness -- Original verion -- based on
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* sa11xx-uda1341.c ALSA driver and the
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* au1000.c OSS driver.
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* 2004-09-09 Matt Porter -- Added support for ALSA 1.0.6
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*
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*/
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/ac97_codec.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <asm/mach-au1x00/au1000_dma.h>
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MODULE_AUTHOR("Charles Eidsness <charles@cooper-street.com>");
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MODULE_DESCRIPTION("Au1000 AC'97 ALSA Driver");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{AMD,Au1000 AC'97}}");
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#define PLAYBACK 0
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#define CAPTURE 1
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#define AC97_SLOT_3 0x01
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#define AC97_SLOT_4 0x02
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#define AC97_SLOT_6 0x08
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#define AC97_CMD_IRQ 31
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#define READ 0
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#define WRITE 1
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#define READ_WAIT 2
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#define RW_DONE 3
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struct au1000_period
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{
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u32 start;
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u32 relative_end; /*realtive to start of buffer*/
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struct au1000_period * next;
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};
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/*Au1000 AC97 Port Control Reisters*/
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struct au1000_ac97_reg {
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u32 volatile config;
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u32 volatile status;
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u32 volatile data;
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u32 volatile cmd;
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u32 volatile cntrl;
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};
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struct audio_stream {
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struct snd_pcm_substream *substream;
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int dma;
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spinlock_t dma_lock;
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struct au1000_period * buffer;
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unsigned int period_size;
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unsigned int periods;
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};
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struct snd_au1000 {
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struct snd_card *card;
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struct au1000_ac97_reg volatile *ac97_ioport;
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struct resource *ac97_res_port;
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spinlock_t ac97_lock;
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struct snd_ac97 *ac97;
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struct snd_pcm *pcm;
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struct audio_stream *stream[2]; /* playback & capture */
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int dmaid[2]; /* tx(0)/rx(1) DMA ids */
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};
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/*--------------------------- Local Functions --------------------------------*/
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static void
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au1000_set_ac97_xmit_slots(struct snd_au1000 *au1000, long xmit_slots)
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{
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u32 volatile ac97_config;
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spin_lock(&au1000->ac97_lock);
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ac97_config = au1000->ac97_ioport->config;
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ac97_config = ac97_config & ~AC97C_XMIT_SLOTS_MASK;
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ac97_config |= (xmit_slots << AC97C_XMIT_SLOTS_BIT);
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au1000->ac97_ioport->config = ac97_config;
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spin_unlock(&au1000->ac97_lock);
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}
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static void
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au1000_set_ac97_recv_slots(struct snd_au1000 *au1000, long recv_slots)
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{
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u32 volatile ac97_config;
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spin_lock(&au1000->ac97_lock);
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ac97_config = au1000->ac97_ioport->config;
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ac97_config = ac97_config & ~AC97C_RECV_SLOTS_MASK;
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ac97_config |= (recv_slots << AC97C_RECV_SLOTS_BIT);
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au1000->ac97_ioport->config = ac97_config;
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spin_unlock(&au1000->ac97_lock);
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}
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static void
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au1000_release_dma_link(struct audio_stream *stream)
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{
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struct au1000_period * pointer;
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struct au1000_period * pointer_next;
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stream->period_size = 0;
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stream->periods = 0;
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pointer = stream->buffer;
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if (! pointer)
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return;
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do {
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pointer_next = pointer->next;
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kfree(pointer);
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pointer = pointer_next;
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} while (pointer != stream->buffer);
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stream->buffer = NULL;
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}
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static int
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au1000_setup_dma_link(struct audio_stream *stream, unsigned int period_bytes,
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unsigned int periods)
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{
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struct snd_pcm_substream *substream = stream->substream;
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct au1000_period *pointer;
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unsigned long dma_start;
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int i;
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dma_start = virt_to_phys(runtime->dma_area);
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if (stream->period_size == period_bytes &&
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stream->periods == periods)
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return 0; /* not changed */
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au1000_release_dma_link(stream);
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stream->period_size = period_bytes;
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stream->periods = periods;
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stream->buffer = kmalloc(sizeof(struct au1000_period), GFP_KERNEL);
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if (! stream->buffer)
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return -ENOMEM;
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pointer = stream->buffer;
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for (i = 0; i < periods; i++) {
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pointer->start = (u32)(dma_start + (i * period_bytes));
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pointer->relative_end = (u32) (((i+1) * period_bytes) - 0x1);
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if (i < periods - 1) {
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pointer->next = kmalloc(sizeof(struct au1000_period), GFP_KERNEL);
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if (! pointer->next) {
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au1000_release_dma_link(stream);
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return -ENOMEM;
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}
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pointer = pointer->next;
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}
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}
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pointer->next = stream->buffer;
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return 0;
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}
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static void
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au1000_dma_stop(struct audio_stream *stream)
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{
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if (snd_BUG_ON(!stream->buffer))
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return;
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disable_dma(stream->dma);
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}
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static void
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au1000_dma_start(struct audio_stream *stream)
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{
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if (snd_BUG_ON(!stream->buffer))
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return;
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init_dma(stream->dma);
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if (get_dma_active_buffer(stream->dma) == 0) {
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clear_dma_done0(stream->dma);
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set_dma_addr0(stream->dma, stream->buffer->start);
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set_dma_count0(stream->dma, stream->period_size >> 1);
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set_dma_addr1(stream->dma, stream->buffer->next->start);
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set_dma_count1(stream->dma, stream->period_size >> 1);
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} else {
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clear_dma_done1(stream->dma);
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set_dma_addr1(stream->dma, stream->buffer->start);
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set_dma_count1(stream->dma, stream->period_size >> 1);
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set_dma_addr0(stream->dma, stream->buffer->next->start);
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set_dma_count0(stream->dma, stream->period_size >> 1);
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}
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enable_dma_buffers(stream->dma);
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start_dma(stream->dma);
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}
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static irqreturn_t
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au1000_dma_interrupt(int irq, void *dev_id)
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{
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struct audio_stream *stream = (struct audio_stream *) dev_id;
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struct snd_pcm_substream *substream = stream->substream;
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spin_lock(&stream->dma_lock);
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switch (get_dma_buffer_done(stream->dma)) {
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case DMA_D0:
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stream->buffer = stream->buffer->next;
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clear_dma_done0(stream->dma);
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set_dma_addr0(stream->dma, stream->buffer->next->start);
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set_dma_count0(stream->dma, stream->period_size >> 1);
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enable_dma_buffer0(stream->dma);
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break;
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case DMA_D1:
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stream->buffer = stream->buffer->next;
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clear_dma_done1(stream->dma);
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set_dma_addr1(stream->dma, stream->buffer->next->start);
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set_dma_count1(stream->dma, stream->period_size >> 1);
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enable_dma_buffer1(stream->dma);
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break;
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case (DMA_D0 | DMA_D1):
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printk(KERN_ERR "DMA %d missed interrupt.\n",stream->dma);
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au1000_dma_stop(stream);
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au1000_dma_start(stream);
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break;
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case (~DMA_D0 & ~DMA_D1):
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printk(KERN_ERR "DMA %d empty irq.\n",stream->dma);
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}
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spin_unlock(&stream->dma_lock);
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snd_pcm_period_elapsed(substream);
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return IRQ_HANDLED;
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}
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/*-------------------------- PCM Audio Streams -------------------------------*/
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static unsigned int rates[] = {8000, 11025, 16000, 22050};
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static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
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.count = ARRAY_SIZE(rates),
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.list = rates,
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.mask = 0,
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};
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static struct snd_pcm_hardware snd_au1000_hw =
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{
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.info = (SNDRV_PCM_INFO_INTERLEAVED | \
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SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050),
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.rate_min = 8000,
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.rate_max = 22050,
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = 128*1024,
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.period_bytes_min = 32,
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.period_bytes_max = 16*1024,
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.periods_min = 8,
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.periods_max = 255,
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.fifo_size = 16,
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};
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static int
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snd_au1000_playback_open(struct snd_pcm_substream *substream)
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{
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struct snd_au1000 *au1000 = substream->pcm->private_data;
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au1000->stream[PLAYBACK]->substream = substream;
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au1000->stream[PLAYBACK]->buffer = NULL;
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substream->private_data = au1000->stream[PLAYBACK];
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substream->runtime->hw = snd_au1000_hw;
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return (snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0);
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}
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static int
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snd_au1000_capture_open(struct snd_pcm_substream *substream)
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{
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struct snd_au1000 *au1000 = substream->pcm->private_data;
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au1000->stream[CAPTURE]->substream = substream;
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au1000->stream[CAPTURE]->buffer = NULL;
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substream->private_data = au1000->stream[CAPTURE];
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substream->runtime->hw = snd_au1000_hw;
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return (snd_pcm_hw_constraint_list(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0);
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}
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static int
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snd_au1000_playback_close(struct snd_pcm_substream *substream)
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{
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struct snd_au1000 *au1000 = substream->pcm->private_data;
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au1000->stream[PLAYBACK]->substream = NULL;
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return 0;
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}
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static int
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snd_au1000_capture_close(struct snd_pcm_substream *substream)
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{
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struct snd_au1000 *au1000 = substream->pcm->private_data;
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au1000->stream[CAPTURE]->substream = NULL;
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return 0;
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}
|
|
||||||
|
|
||||||
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);
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue