mirror of https://gitee.com/openkylin/linux.git
1763 lines
45 KiB
C
1763 lines
45 KiB
C
/*
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* Driver for NeoMagic 256AV and 256ZX chipsets.
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* Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
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*
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* Based on nm256_audio.c OSS driver in linux kernel.
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* The original author of OSS nm256 driver wishes to remain anonymous,
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* so I just put my acknoledgment to him/her here.
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* The original author's web page is found at
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* http://www.uglx.org/sony.html
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <asm/io.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <sound/core.h>
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#include <sound/info.h>
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#include <sound/control.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#define CARD_NAME "NeoMagic 256AV/ZX"
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#define DRIVER_NAME "NM256"
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MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
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MODULE_DESCRIPTION("NeoMagic NM256AV/ZX");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV},"
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"{NeoMagic,NM256ZX}}");
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/*
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* some compile conditions.
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*/
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static int index = SNDRV_DEFAULT_IDX1; /* Index */
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static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
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static int playback_bufsize = 16;
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static int capture_bufsize = 16;
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static bool force_ac97; /* disabled as default */
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static int buffer_top; /* not specified */
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static bool use_cache; /* disabled */
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static bool vaio_hack; /* disabled */
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static bool reset_workaround;
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static bool reset_workaround_2;
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module_param(index, int, 0444);
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MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
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module_param(id, charp, 0444);
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MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
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module_param(playback_bufsize, int, 0444);
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MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard.");
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module_param(capture_bufsize, int, 0444);
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MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard.");
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module_param(force_ac97, bool, 0444);
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MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard.");
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module_param(buffer_top, int, 0444);
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MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard.");
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module_param(use_cache, bool, 0444);
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MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access.");
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module_param(vaio_hack, bool, 0444);
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MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks.");
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module_param(reset_workaround, bool, 0444);
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MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops.");
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module_param(reset_workaround_2, bool, 0444);
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MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops.");
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/* just for backward compatibility */
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static bool enable;
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module_param(enable, bool, 0444);
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/*
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* hw definitions
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*/
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/* The BIOS signature. */
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#define NM_SIGNATURE 0x4e4d0000
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/* Signature mask. */
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#define NM_SIG_MASK 0xffff0000
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/* Size of the second memory area. */
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#define NM_PORT2_SIZE 4096
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/* The base offset of the mixer in the second memory area. */
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#define NM_MIXER_OFFSET 0x600
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/* The maximum size of a coefficient entry. */
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#define NM_MAX_PLAYBACK_COEF_SIZE 0x5000
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#define NM_MAX_RECORD_COEF_SIZE 0x1260
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/* The interrupt register. */
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#define NM_INT_REG 0xa04
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/* And its bits. */
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#define NM_PLAYBACK_INT 0x40
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#define NM_RECORD_INT 0x100
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#define NM_MISC_INT_1 0x4000
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#define NM_MISC_INT_2 0x1
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#define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
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/* The AV's "mixer ready" status bit and location. */
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#define NM_MIXER_STATUS_OFFSET 0xa04
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#define NM_MIXER_READY_MASK 0x0800
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#define NM_MIXER_PRESENCE 0xa06
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#define NM_PRESENCE_MASK 0x0050
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#define NM_PRESENCE_VALUE 0x0040
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/*
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* For the ZX. It uses the same interrupt register, but it holds 32
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* bits instead of 16.
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*/
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#define NM2_PLAYBACK_INT 0x10000
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#define NM2_RECORD_INT 0x80000
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#define NM2_MISC_INT_1 0x8
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#define NM2_MISC_INT_2 0x2
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#define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X))
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/* The ZX's "mixer ready" status bit and location. */
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#define NM2_MIXER_STATUS_OFFSET 0xa06
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#define NM2_MIXER_READY_MASK 0x0800
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/* The playback registers start from here. */
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#define NM_PLAYBACK_REG_OFFSET 0x0
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/* The record registers start from here. */
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#define NM_RECORD_REG_OFFSET 0x200
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/* The rate register is located 2 bytes from the start of the register area. */
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#define NM_RATE_REG_OFFSET 2
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/* Mono/stereo flag, number of bits on playback, and rate mask. */
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#define NM_RATE_STEREO 1
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#define NM_RATE_BITS_16 2
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#define NM_RATE_MASK 0xf0
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/* Playback enable register. */
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#define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
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#define NM_PLAYBACK_ENABLE_FLAG 1
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#define NM_PLAYBACK_ONESHOT 2
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#define NM_PLAYBACK_FREERUN 4
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/* Mutes the audio output. */
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#define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
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#define NM_AUDIO_MUTE_LEFT 0x8000
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#define NM_AUDIO_MUTE_RIGHT 0x0080
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/* Recording enable register. */
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#define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
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#define NM_RECORD_ENABLE_FLAG 1
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#define NM_RECORD_FREERUN 2
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/* coefficient buffer pointer */
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#define NM_COEFF_START_OFFSET 0x1c
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#define NM_COEFF_END_OFFSET 0x20
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/* DMA buffer offsets */
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#define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
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#define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
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#define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
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#define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
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#define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
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#define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
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#define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
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#define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
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struct nm256_stream {
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struct nm256 *chip;
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struct snd_pcm_substream *substream;
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int running;
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int suspended;
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u32 buf; /* offset from chip->buffer */
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int bufsize; /* buffer size in bytes */
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void __iomem *bufptr; /* mapped pointer */
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unsigned long bufptr_addr; /* physical address of the mapped pointer */
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int dma_size; /* buffer size of the substream in bytes */
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int period_size; /* period size in bytes */
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int periods; /* # of periods */
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int shift; /* bit shifts */
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int cur_period; /* current period # */
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};
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struct nm256 {
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struct snd_card *card;
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void __iomem *cport; /* control port */
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struct resource *res_cport; /* its resource */
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unsigned long cport_addr; /* physical address */
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void __iomem *buffer; /* buffer */
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struct resource *res_buffer; /* its resource */
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unsigned long buffer_addr; /* buffer phyiscal address */
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u32 buffer_start; /* start offset from pci resource 0 */
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u32 buffer_end; /* end offset */
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u32 buffer_size; /* total buffer size */
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u32 all_coeff_buf; /* coefficient buffer */
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u32 coeff_buf[2]; /* coefficient buffer for each stream */
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unsigned int coeffs_current: 1; /* coeff. table is loaded? */
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unsigned int use_cache: 1; /* use one big coef. table */
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unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */
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unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */
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unsigned int in_resume: 1;
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int mixer_base; /* register offset of ac97 mixer */
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int mixer_status_offset; /* offset of mixer status reg. */
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int mixer_status_mask; /* bit mask to test the mixer status */
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int irq;
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int irq_acks;
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irq_handler_t interrupt;
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int badintrcount; /* counter to check bogus interrupts */
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struct mutex irq_mutex;
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struct nm256_stream streams[2];
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struct snd_ac97 *ac97;
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unsigned short *ac97_regs; /* register caches, only for valid regs */
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struct snd_pcm *pcm;
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struct pci_dev *pci;
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spinlock_t reg_lock;
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};
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/*
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* include coefficient table
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*/
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#include "nm256_coef.c"
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/*
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* PCI ids
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*/
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static DEFINE_PCI_DEVICE_TABLE(snd_nm256_ids) = {
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{PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO), 0},
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{PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO), 0},
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{PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO), 0},
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{0,},
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};
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MODULE_DEVICE_TABLE(pci, snd_nm256_ids);
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/*
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* lowlvel stuffs
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*/
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static inline u8
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snd_nm256_readb(struct nm256 *chip, int offset)
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{
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return readb(chip->cport + offset);
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}
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static inline u16
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snd_nm256_readw(struct nm256 *chip, int offset)
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{
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return readw(chip->cport + offset);
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}
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static inline u32
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snd_nm256_readl(struct nm256 *chip, int offset)
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{
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return readl(chip->cport + offset);
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}
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static inline void
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snd_nm256_writeb(struct nm256 *chip, int offset, u8 val)
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{
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writeb(val, chip->cport + offset);
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}
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static inline void
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snd_nm256_writew(struct nm256 *chip, int offset, u16 val)
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{
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writew(val, chip->cport + offset);
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}
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static inline void
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snd_nm256_writel(struct nm256 *chip, int offset, u32 val)
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{
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writel(val, chip->cport + offset);
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}
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static inline void
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snd_nm256_write_buffer(struct nm256 *chip, void *src, int offset, int size)
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{
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offset -= chip->buffer_start;
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#ifdef CONFIG_SND_DEBUG
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if (offset < 0 || offset >= chip->buffer_size) {
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snd_printk(KERN_ERR "write_buffer invalid offset = %d size = %d\n",
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offset, size);
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return;
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}
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#endif
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memcpy_toio(chip->buffer + offset, src, size);
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}
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/*
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* coefficient handlers -- what a magic!
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*/
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static u16
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snd_nm256_get_start_offset(int which)
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{
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u16 offset = 0;
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while (which-- > 0)
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offset += coefficient_sizes[which];
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return offset;
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}
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static void
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snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which)
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{
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u32 coeff_buf = chip->coeff_buf[stream];
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u16 offset = snd_nm256_get_start_offset(which);
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u16 size = coefficient_sizes[which];
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snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size);
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snd_nm256_writel(chip, port, coeff_buf);
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/* ??? Record seems to behave differently than playback. */
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if (stream == SNDRV_PCM_STREAM_PLAYBACK)
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size--;
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snd_nm256_writel(chip, port + 4, coeff_buf + size);
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}
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static void
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snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number)
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{
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/* The enable register for the specified engine. */
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u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ?
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NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG);
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u32 addr = NM_COEFF_START_OFFSET;
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addr += (stream == SNDRV_PCM_STREAM_CAPTURE ?
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NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET);
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if (snd_nm256_readb(chip, poffset) & 1) {
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snd_printd("NM256: Engine was enabled while loading coefficients!\n");
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return;
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}
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/* The recording engine uses coefficient values 8-15. */
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number &= 7;
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if (stream == SNDRV_PCM_STREAM_CAPTURE)
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number += 8;
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if (! chip->use_cache) {
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snd_nm256_load_one_coefficient(chip, stream, addr, number);
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return;
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}
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if (! chip->coeffs_current) {
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snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf,
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NM_TOTAL_COEFF_COUNT * 4);
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chip->coeffs_current = 1;
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} else {
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u32 base = chip->all_coeff_buf;
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u32 offset = snd_nm256_get_start_offset(number);
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u32 end_offset = offset + coefficient_sizes[number];
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snd_nm256_writel(chip, addr, base + offset);
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if (stream == SNDRV_PCM_STREAM_PLAYBACK)
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end_offset--;
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snd_nm256_writel(chip, addr + 4, base + end_offset);
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}
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}
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/* The actual rates supported by the card. */
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static unsigned int samplerates[8] = {
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8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
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};
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static struct snd_pcm_hw_constraint_list constraints_rates = {
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.count = ARRAY_SIZE(samplerates),
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.list = samplerates,
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.mask = 0,
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};
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/*
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* return the index of the target rate
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*/
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static int
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snd_nm256_fixed_rate(unsigned int rate)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
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if (rate == samplerates[i])
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return i;
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}
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snd_BUG();
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return 0;
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}
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/*
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* set sample rate and format
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*/
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static void
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snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s,
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struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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int rate_index = snd_nm256_fixed_rate(runtime->rate);
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unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK;
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s->shift = 0;
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if (snd_pcm_format_width(runtime->format) == 16) {
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ratebits |= NM_RATE_BITS_16;
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s->shift++;
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}
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if (runtime->channels > 1) {
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ratebits |= NM_RATE_STEREO;
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s->shift++;
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}
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runtime->rate = samplerates[rate_index];
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switch (substream->stream) {
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case SNDRV_PCM_STREAM_PLAYBACK:
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snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */
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snd_nm256_writeb(chip,
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NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET,
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ratebits);
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break;
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case SNDRV_PCM_STREAM_CAPTURE:
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snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */
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snd_nm256_writeb(chip,
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NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET,
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ratebits);
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break;
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}
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}
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/* acquire interrupt */
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static int snd_nm256_acquire_irq(struct nm256 *chip)
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{
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mutex_lock(&chip->irq_mutex);
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if (chip->irq < 0) {
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if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED,
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KBUILD_MODNAME, chip)) {
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snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->pci->irq);
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mutex_unlock(&chip->irq_mutex);
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return -EBUSY;
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}
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chip->irq = chip->pci->irq;
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}
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chip->irq_acks++;
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mutex_unlock(&chip->irq_mutex);
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return 0;
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}
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/* release interrupt */
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static void snd_nm256_release_irq(struct nm256 *chip)
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{
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mutex_lock(&chip->irq_mutex);
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if (chip->irq_acks > 0)
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chip->irq_acks--;
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if (chip->irq_acks == 0 && chip->irq >= 0) {
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free_irq(chip->irq, chip);
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chip->irq = -1;
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}
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mutex_unlock(&chip->irq_mutex);
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}
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/*
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* start / stop
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*/
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/* update the watermark (current period) */
|
|
static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg)
|
|
{
|
|
s->cur_period++;
|
|
s->cur_period %= s->periods;
|
|
snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size);
|
|
}
|
|
|
|
#define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK)
|
|
#define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK)
|
|
|
|
static void
|
|
snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
/* program buffer pointers */
|
|
snd_nm256_writel(chip, NM_PBUFFER_START, s->buf);
|
|
snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift));
|
|
snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf);
|
|
snd_nm256_playback_mark(chip, s);
|
|
|
|
/* Enable playback engine and interrupts. */
|
|
snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG,
|
|
NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN);
|
|
/* Enable both channels. */
|
|
snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
|
|
}
|
|
|
|
static void
|
|
snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
/* program buffer pointers */
|
|
snd_nm256_writel(chip, NM_RBUFFER_START, s->buf);
|
|
snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size);
|
|
snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf);
|
|
snd_nm256_capture_mark(chip, s);
|
|
|
|
/* Enable playback engine and interrupts. */
|
|
snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG,
|
|
NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN);
|
|
}
|
|
|
|
/* Stop the play engine. */
|
|
static void
|
|
snd_nm256_playback_stop(struct nm256 *chip)
|
|
{
|
|
/* Shut off sound from both channels. */
|
|
snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
|
|
NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT);
|
|
/* Disable play engine. */
|
|
snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0);
|
|
}
|
|
|
|
static void
|
|
snd_nm256_capture_stop(struct nm256 *chip)
|
|
{
|
|
/* Disable recording engine. */
|
|
snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0);
|
|
}
|
|
|
|
static int
|
|
snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
struct nm256_stream *s = substream->runtime->private_data;
|
|
int err = 0;
|
|
|
|
if (snd_BUG_ON(!s))
|
|
return -ENXIO;
|
|
|
|
spin_lock(&chip->reg_lock);
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
s->suspended = 0;
|
|
/* fallthru */
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
if (! s->running) {
|
|
snd_nm256_playback_start(chip, s, substream);
|
|
s->running = 1;
|
|
}
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
s->suspended = 1;
|
|
/* fallthru */
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
if (s->running) {
|
|
snd_nm256_playback_stop(chip);
|
|
s->running = 0;
|
|
}
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
spin_unlock(&chip->reg_lock);
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
struct nm256_stream *s = substream->runtime->private_data;
|
|
int err = 0;
|
|
|
|
if (snd_BUG_ON(!s))
|
|
return -ENXIO;
|
|
|
|
spin_lock(&chip->reg_lock);
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
if (! s->running) {
|
|
snd_nm256_capture_start(chip, s, substream);
|
|
s->running = 1;
|
|
}
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
if (s->running) {
|
|
snd_nm256_capture_stop(chip);
|
|
s->running = 0;
|
|
}
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
spin_unlock(&chip->reg_lock);
|
|
return err;
|
|
}
|
|
|
|
|
|
/*
|
|
* prepare playback/capture channel
|
|
*/
|
|
static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct nm256_stream *s = runtime->private_data;
|
|
|
|
if (snd_BUG_ON(!s))
|
|
return -ENXIO;
|
|
s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
|
|
s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
|
|
s->periods = substream->runtime->periods;
|
|
s->cur_period = 0;
|
|
|
|
spin_lock_irq(&chip->reg_lock);
|
|
s->running = 0;
|
|
snd_nm256_set_format(chip, s, substream);
|
|
spin_unlock_irq(&chip->reg_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* get the current pointer
|
|
*/
|
|
static snd_pcm_uframes_t
|
|
snd_nm256_playback_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
struct nm256_stream *s = substream->runtime->private_data;
|
|
unsigned long curp;
|
|
|
|
if (snd_BUG_ON(!s))
|
|
return 0;
|
|
curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
|
|
curp %= s->dma_size;
|
|
return bytes_to_frames(substream->runtime, curp);
|
|
}
|
|
|
|
static snd_pcm_uframes_t
|
|
snd_nm256_capture_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
struct nm256_stream *s = substream->runtime->private_data;
|
|
unsigned long curp;
|
|
|
|
if (snd_BUG_ON(!s))
|
|
return 0;
|
|
curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
|
|
curp %= s->dma_size;
|
|
return bytes_to_frames(substream->runtime, curp);
|
|
}
|
|
|
|
/* Remapped I/O space can be accessible as pointer on i386 */
|
|
/* This might be changed in the future */
|
|
#ifndef __i386__
|
|
/*
|
|
* silence / copy for playback
|
|
*/
|
|
static int
|
|
snd_nm256_playback_silence(struct snd_pcm_substream *substream,
|
|
int channel, /* not used (interleaved data) */
|
|
snd_pcm_uframes_t pos,
|
|
snd_pcm_uframes_t count)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct nm256_stream *s = runtime->private_data;
|
|
count = frames_to_bytes(runtime, count);
|
|
pos = frames_to_bytes(runtime, pos);
|
|
memset_io(s->bufptr + pos, 0, count);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
snd_nm256_playback_copy(struct snd_pcm_substream *substream,
|
|
int channel, /* not used (interleaved data) */
|
|
snd_pcm_uframes_t pos,
|
|
void __user *src,
|
|
snd_pcm_uframes_t count)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct nm256_stream *s = runtime->private_data;
|
|
count = frames_to_bytes(runtime, count);
|
|
pos = frames_to_bytes(runtime, pos);
|
|
if (copy_from_user_toio(s->bufptr + pos, src, count))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* copy to user
|
|
*/
|
|
static int
|
|
snd_nm256_capture_copy(struct snd_pcm_substream *substream,
|
|
int channel, /* not used (interleaved data) */
|
|
snd_pcm_uframes_t pos,
|
|
void __user *dst,
|
|
snd_pcm_uframes_t count)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct nm256_stream *s = runtime->private_data;
|
|
count = frames_to_bytes(runtime, count);
|
|
pos = frames_to_bytes(runtime, pos);
|
|
if (copy_to_user_fromio(dst, s->bufptr + pos, count))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
#endif /* !__i386__ */
|
|
|
|
|
|
/*
|
|
* update playback/capture watermarks
|
|
*/
|
|
|
|
/* spinlock held! */
|
|
static void
|
|
snd_nm256_playback_update(struct nm256 *chip)
|
|
{
|
|
struct nm256_stream *s;
|
|
|
|
s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
|
if (s->running && s->substream) {
|
|
spin_unlock(&chip->reg_lock);
|
|
snd_pcm_period_elapsed(s->substream);
|
|
spin_lock(&chip->reg_lock);
|
|
snd_nm256_playback_mark(chip, s);
|
|
}
|
|
}
|
|
|
|
/* spinlock held! */
|
|
static void
|
|
snd_nm256_capture_update(struct nm256 *chip)
|
|
{
|
|
struct nm256_stream *s;
|
|
|
|
s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE];
|
|
if (s->running && s->substream) {
|
|
spin_unlock(&chip->reg_lock);
|
|
snd_pcm_period_elapsed(s->substream);
|
|
spin_lock(&chip->reg_lock);
|
|
snd_nm256_capture_mark(chip, s);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* hardware info
|
|
*/
|
|
static struct snd_pcm_hardware snd_nm256_playback =
|
|
{
|
|
.info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
/*SNDRV_PCM_INFO_PAUSE |*/
|
|
SNDRV_PCM_INFO_RESUME,
|
|
.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
|
|
.rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
|
|
.rate_min = 8000,
|
|
.rate_max = 48000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
.buffer_bytes_max = 128 * 1024,
|
|
.period_bytes_min = 256,
|
|
.period_bytes_max = 128 * 1024,
|
|
};
|
|
|
|
static struct snd_pcm_hardware snd_nm256_capture =
|
|
{
|
|
.info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
/*SNDRV_PCM_INFO_PAUSE |*/
|
|
SNDRV_PCM_INFO_RESUME,
|
|
.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
|
|
.rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
|
|
.rate_min = 8000,
|
|
.rate_max = 48000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
.buffer_bytes_max = 128 * 1024,
|
|
.period_bytes_min = 256,
|
|
.period_bytes_max = 128 * 1024,
|
|
};
|
|
|
|
|
|
/* set dma transfer size */
|
|
static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *hw_params)
|
|
{
|
|
/* area and addr are already set and unchanged */
|
|
substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* open
|
|
*/
|
|
static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s,
|
|
struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hardware *hw_ptr)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
|
|
s->running = 0;
|
|
runtime->hw = *hw_ptr;
|
|
runtime->hw.buffer_bytes_max = s->bufsize;
|
|
runtime->hw.period_bytes_max = s->bufsize / 2;
|
|
runtime->dma_area = (void __force *) s->bufptr;
|
|
runtime->dma_addr = s->bufptr_addr;
|
|
runtime->dma_bytes = s->bufsize;
|
|
runtime->private_data = s;
|
|
s->substream = substream;
|
|
|
|
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
|
|
&constraints_rates);
|
|
}
|
|
|
|
static int
|
|
snd_nm256_playback_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
|
|
if (snd_nm256_acquire_irq(chip) < 0)
|
|
return -EBUSY;
|
|
snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK],
|
|
substream, &snd_nm256_playback);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
snd_nm256_capture_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
|
|
if (snd_nm256_acquire_irq(chip) < 0)
|
|
return -EBUSY;
|
|
snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE],
|
|
substream, &snd_nm256_capture);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* close - we don't have to do special..
|
|
*/
|
|
static int
|
|
snd_nm256_playback_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
|
|
snd_nm256_release_irq(chip);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
snd_nm256_capture_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct nm256 *chip = snd_pcm_substream_chip(substream);
|
|
|
|
snd_nm256_release_irq(chip);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* create a pcm instance
|
|
*/
|
|
static struct snd_pcm_ops snd_nm256_playback_ops = {
|
|
.open = snd_nm256_playback_open,
|
|
.close = snd_nm256_playback_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_nm256_pcm_hw_params,
|
|
.prepare = snd_nm256_pcm_prepare,
|
|
.trigger = snd_nm256_playback_trigger,
|
|
.pointer = snd_nm256_playback_pointer,
|
|
#ifndef __i386__
|
|
.copy = snd_nm256_playback_copy,
|
|
.silence = snd_nm256_playback_silence,
|
|
#endif
|
|
.mmap = snd_pcm_lib_mmap_iomem,
|
|
};
|
|
|
|
static struct snd_pcm_ops snd_nm256_capture_ops = {
|
|
.open = snd_nm256_capture_open,
|
|
.close = snd_nm256_capture_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_nm256_pcm_hw_params,
|
|
.prepare = snd_nm256_pcm_prepare,
|
|
.trigger = snd_nm256_capture_trigger,
|
|
.pointer = snd_nm256_capture_pointer,
|
|
#ifndef __i386__
|
|
.copy = snd_nm256_capture_copy,
|
|
#endif
|
|
.mmap = snd_pcm_lib_mmap_iomem,
|
|
};
|
|
|
|
static int
|
|
snd_nm256_pcm(struct nm256 *chip, int device)
|
|
{
|
|
struct snd_pcm *pcm;
|
|
int i, err;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
struct nm256_stream *s = &chip->streams[i];
|
|
s->bufptr = chip->buffer + (s->buf - chip->buffer_start);
|
|
s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start);
|
|
}
|
|
|
|
err = snd_pcm_new(chip->card, chip->card->driver, device,
|
|
1, 1, &pcm);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops);
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops);
|
|
|
|
pcm->private_data = chip;
|
|
pcm->info_flags = 0;
|
|
chip->pcm = pcm;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Initialize the hardware.
|
|
*/
|
|
static void
|
|
snd_nm256_init_chip(struct nm256 *chip)
|
|
{
|
|
/* Reset everything. */
|
|
snd_nm256_writeb(chip, 0x0, 0x11);
|
|
snd_nm256_writew(chip, 0x214, 0);
|
|
/* stop sounds.. */
|
|
//snd_nm256_playback_stop(chip);
|
|
//snd_nm256_capture_stop(chip);
|
|
}
|
|
|
|
|
|
static irqreturn_t
|
|
snd_nm256_intr_check(struct nm256 *chip)
|
|
{
|
|
if (chip->badintrcount++ > 1000) {
|
|
/*
|
|
* I'm not sure if the best thing is to stop the card from
|
|
* playing or just release the interrupt (after all, we're in
|
|
* a bad situation, so doing fancy stuff may not be such a good
|
|
* idea).
|
|
*
|
|
* I worry about the card engine continuing to play noise
|
|
* over and over, however--that could become a very
|
|
* obnoxious problem. And we know that when this usually
|
|
* happens things are fairly safe, it just means the user's
|
|
* inserted a PCMCIA card and someone's spamming us with IRQ 9s.
|
|
*/
|
|
if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
|
|
snd_nm256_playback_stop(chip);
|
|
if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
|
|
snd_nm256_capture_stop(chip);
|
|
chip->badintrcount = 0;
|
|
return IRQ_HANDLED;
|
|
}
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/*
|
|
* Handle a potential interrupt for the device referred to by DEV_ID.
|
|
*
|
|
* I don't like the cut-n-paste job here either between the two routines,
|
|
* but there are sufficient differences between the two interrupt handlers
|
|
* that parameterizing it isn't all that great either. (Could use a macro,
|
|
* I suppose...yucky bleah.)
|
|
*/
|
|
|
|
static irqreturn_t
|
|
snd_nm256_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct nm256 *chip = dev_id;
|
|
u16 status;
|
|
u8 cbyte;
|
|
|
|
status = snd_nm256_readw(chip, NM_INT_REG);
|
|
|
|
/* Not ours. */
|
|
if (status == 0)
|
|
return snd_nm256_intr_check(chip);
|
|
|
|
chip->badintrcount = 0;
|
|
|
|
/* Rather boring; check for individual interrupts and process them. */
|
|
|
|
spin_lock(&chip->reg_lock);
|
|
if (status & NM_PLAYBACK_INT) {
|
|
status &= ~NM_PLAYBACK_INT;
|
|
NM_ACK_INT(chip, NM_PLAYBACK_INT);
|
|
snd_nm256_playback_update(chip);
|
|
}
|
|
|
|
if (status & NM_RECORD_INT) {
|
|
status &= ~NM_RECORD_INT;
|
|
NM_ACK_INT(chip, NM_RECORD_INT);
|
|
snd_nm256_capture_update(chip);
|
|
}
|
|
|
|
if (status & NM_MISC_INT_1) {
|
|
status &= ~NM_MISC_INT_1;
|
|
NM_ACK_INT(chip, NM_MISC_INT_1);
|
|
snd_printd("NM256: Got misc interrupt #1\n");
|
|
snd_nm256_writew(chip, NM_INT_REG, 0x8000);
|
|
cbyte = snd_nm256_readb(chip, 0x400);
|
|
snd_nm256_writeb(chip, 0x400, cbyte | 2);
|
|
}
|
|
|
|
if (status & NM_MISC_INT_2) {
|
|
status &= ~NM_MISC_INT_2;
|
|
NM_ACK_INT(chip, NM_MISC_INT_2);
|
|
snd_printd("NM256: Got misc interrupt #2\n");
|
|
cbyte = snd_nm256_readb(chip, 0x400);
|
|
snd_nm256_writeb(chip, 0x400, cbyte & ~2);
|
|
}
|
|
|
|
/* Unknown interrupt. */
|
|
if (status) {
|
|
snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
|
|
status);
|
|
/* Pray. */
|
|
NM_ACK_INT(chip, status);
|
|
}
|
|
|
|
spin_unlock(&chip->reg_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* Handle a potential interrupt for the device referred to by DEV_ID.
|
|
* This handler is for the 256ZX, and is very similar to the non-ZX
|
|
* routine.
|
|
*/
|
|
|
|
static irqreturn_t
|
|
snd_nm256_interrupt_zx(int irq, void *dev_id)
|
|
{
|
|
struct nm256 *chip = dev_id;
|
|
u32 status;
|
|
u8 cbyte;
|
|
|
|
status = snd_nm256_readl(chip, NM_INT_REG);
|
|
|
|
/* Not ours. */
|
|
if (status == 0)
|
|
return snd_nm256_intr_check(chip);
|
|
|
|
chip->badintrcount = 0;
|
|
|
|
/* Rather boring; check for individual interrupts and process them. */
|
|
|
|
spin_lock(&chip->reg_lock);
|
|
if (status & NM2_PLAYBACK_INT) {
|
|
status &= ~NM2_PLAYBACK_INT;
|
|
NM2_ACK_INT(chip, NM2_PLAYBACK_INT);
|
|
snd_nm256_playback_update(chip);
|
|
}
|
|
|
|
if (status & NM2_RECORD_INT) {
|
|
status &= ~NM2_RECORD_INT;
|
|
NM2_ACK_INT(chip, NM2_RECORD_INT);
|
|
snd_nm256_capture_update(chip);
|
|
}
|
|
|
|
if (status & NM2_MISC_INT_1) {
|
|
status &= ~NM2_MISC_INT_1;
|
|
NM2_ACK_INT(chip, NM2_MISC_INT_1);
|
|
snd_printd("NM256: Got misc interrupt #1\n");
|
|
cbyte = snd_nm256_readb(chip, 0x400);
|
|
snd_nm256_writeb(chip, 0x400, cbyte | 2);
|
|
}
|
|
|
|
if (status & NM2_MISC_INT_2) {
|
|
status &= ~NM2_MISC_INT_2;
|
|
NM2_ACK_INT(chip, NM2_MISC_INT_2);
|
|
snd_printd("NM256: Got misc interrupt #2\n");
|
|
cbyte = snd_nm256_readb(chip, 0x400);
|
|
snd_nm256_writeb(chip, 0x400, cbyte & ~2);
|
|
}
|
|
|
|
/* Unknown interrupt. */
|
|
if (status) {
|
|
snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
|
|
status);
|
|
/* Pray. */
|
|
NM2_ACK_INT(chip, status);
|
|
}
|
|
|
|
spin_unlock(&chip->reg_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* AC97 interface
|
|
*/
|
|
|
|
/*
|
|
* Waits for the mixer to become ready to be written; returns a zero value
|
|
* if it timed out.
|
|
*/
|
|
static int
|
|
snd_nm256_ac97_ready(struct nm256 *chip)
|
|
{
|
|
int timeout = 10;
|
|
u32 testaddr;
|
|
u16 testb;
|
|
|
|
testaddr = chip->mixer_status_offset;
|
|
testb = chip->mixer_status_mask;
|
|
|
|
/*
|
|
* Loop around waiting for the mixer to become ready.
|
|
*/
|
|
while (timeout-- > 0) {
|
|
if ((snd_nm256_readw(chip, testaddr) & testb) == 0)
|
|
return 1;
|
|
udelay(100);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initial register values to be written to the AC97 mixer.
|
|
* While most of these are identical to the reset values, we do this
|
|
* so that we have most of the register contents cached--this avoids
|
|
* reading from the mixer directly (which seems to be problematic,
|
|
* probably due to ignorance).
|
|
*/
|
|
|
|
struct initialValues {
|
|
unsigned short reg;
|
|
unsigned short value;
|
|
};
|
|
|
|
static struct initialValues nm256_ac97_init_val[] =
|
|
{
|
|
{ AC97_MASTER, 0x8000 },
|
|
{ AC97_HEADPHONE, 0x8000 },
|
|
{ AC97_MASTER_MONO, 0x8000 },
|
|
{ AC97_PC_BEEP, 0x8000 },
|
|
{ AC97_PHONE, 0x8008 },
|
|
{ AC97_MIC, 0x8000 },
|
|
{ AC97_LINE, 0x8808 },
|
|
{ AC97_CD, 0x8808 },
|
|
{ AC97_VIDEO, 0x8808 },
|
|
{ AC97_AUX, 0x8808 },
|
|
{ AC97_PCM, 0x8808 },
|
|
{ AC97_REC_SEL, 0x0000 },
|
|
{ AC97_REC_GAIN, 0x0B0B },
|
|
{ AC97_GENERAL_PURPOSE, 0x0000 },
|
|
{ AC97_3D_CONTROL, 0x8000 },
|
|
{ AC97_VENDOR_ID1, 0x8384 },
|
|
{ AC97_VENDOR_ID2, 0x7609 },
|
|
};
|
|
|
|
static int nm256_ac97_idx(unsigned short reg)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++)
|
|
if (nm256_ac97_init_val[i].reg == reg)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* some nm256 easily crash when reading from mixer registers
|
|
* thus we're treating it as a write-only mixer and cache the
|
|
* written values
|
|
*/
|
|
static unsigned short
|
|
snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
|
|
{
|
|
struct nm256 *chip = ac97->private_data;
|
|
int idx = nm256_ac97_idx(reg);
|
|
|
|
if (idx < 0)
|
|
return 0;
|
|
return chip->ac97_regs[idx];
|
|
}
|
|
|
|
/*
|
|
*/
|
|
static void
|
|
snd_nm256_ac97_write(struct snd_ac97 *ac97,
|
|
unsigned short reg, unsigned short val)
|
|
{
|
|
struct nm256 *chip = ac97->private_data;
|
|
int tries = 2;
|
|
int idx = nm256_ac97_idx(reg);
|
|
u32 base;
|
|
|
|
if (idx < 0)
|
|
return;
|
|
|
|
base = chip->mixer_base;
|
|
|
|
snd_nm256_ac97_ready(chip);
|
|
|
|
/* Wait for the write to take, too. */
|
|
while (tries-- > 0) {
|
|
snd_nm256_writew(chip, base + reg, val);
|
|
msleep(1); /* a little delay here seems better.. */
|
|
if (snd_nm256_ac97_ready(chip)) {
|
|
/* successful write: set cache */
|
|
chip->ac97_regs[idx] = val;
|
|
return;
|
|
}
|
|
}
|
|
snd_printd("nm256: ac97 codec not ready..\n");
|
|
}
|
|
|
|
/* static resolution table */
|
|
static struct snd_ac97_res_table nm256_res_table[] = {
|
|
{ AC97_MASTER, 0x1f1f },
|
|
{ AC97_HEADPHONE, 0x1f1f },
|
|
{ AC97_MASTER_MONO, 0x001f },
|
|
{ AC97_PC_BEEP, 0x001f },
|
|
{ AC97_PHONE, 0x001f },
|
|
{ AC97_MIC, 0x001f },
|
|
{ AC97_LINE, 0x1f1f },
|
|
{ AC97_CD, 0x1f1f },
|
|
{ AC97_VIDEO, 0x1f1f },
|
|
{ AC97_AUX, 0x1f1f },
|
|
{ AC97_PCM, 0x1f1f },
|
|
{ AC97_REC_GAIN, 0x0f0f },
|
|
{ } /* terminator */
|
|
};
|
|
|
|
/* initialize the ac97 into a known state */
|
|
static void
|
|
snd_nm256_ac97_reset(struct snd_ac97 *ac97)
|
|
{
|
|
struct nm256 *chip = ac97->private_data;
|
|
|
|
/* Reset the mixer. 'Tis magic! */
|
|
snd_nm256_writeb(chip, 0x6c0, 1);
|
|
if (! chip->reset_workaround) {
|
|
/* Dell latitude LS will lock up by this */
|
|
snd_nm256_writeb(chip, 0x6cc, 0x87);
|
|
}
|
|
if (! chip->reset_workaround_2) {
|
|
/* Dell latitude CSx will lock up by this */
|
|
snd_nm256_writeb(chip, 0x6cc, 0x80);
|
|
snd_nm256_writeb(chip, 0x6cc, 0x0);
|
|
}
|
|
if (! chip->in_resume) {
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) {
|
|
/* preload the cache, so as to avoid even a single
|
|
* read of the mixer regs
|
|
*/
|
|
snd_nm256_ac97_write(ac97, nm256_ac97_init_val[i].reg,
|
|
nm256_ac97_init_val[i].value);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* create an ac97 mixer interface */
|
|
static int
|
|
snd_nm256_mixer(struct nm256 *chip)
|
|
{
|
|
struct snd_ac97_bus *pbus;
|
|
struct snd_ac97_template ac97;
|
|
int err;
|
|
static struct snd_ac97_bus_ops ops = {
|
|
.reset = snd_nm256_ac97_reset,
|
|
.write = snd_nm256_ac97_write,
|
|
.read = snd_nm256_ac97_read,
|
|
};
|
|
|
|
chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val),
|
|
sizeof(short), GFP_KERNEL);
|
|
if (! chip->ac97_regs)
|
|
return -ENOMEM;
|
|
|
|
if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
|
|
return err;
|
|
|
|
memset(&ac97, 0, sizeof(ac97));
|
|
ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */
|
|
ac97.private_data = chip;
|
|
ac97.res_table = nm256_res_table;
|
|
pbus->no_vra = 1;
|
|
err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
|
|
if (err < 0)
|
|
return err;
|
|
if (! (chip->ac97->id & (0xf0000000))) {
|
|
/* looks like an invalid id */
|
|
sprintf(chip->card->mixername, "%s AC97", chip->card->driver);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* See if the signature left by the NM256 BIOS is intact; if so, we use
|
|
* the associated address as the end of our audio buffer in the video
|
|
* RAM.
|
|
*/
|
|
|
|
static int
|
|
snd_nm256_peek_for_sig(struct nm256 *chip)
|
|
{
|
|
/* The signature is located 1K below the end of video RAM. */
|
|
void __iomem *temp;
|
|
/* Default buffer end is 5120 bytes below the top of RAM. */
|
|
unsigned long pointer_found = chip->buffer_end - 0x1400;
|
|
u32 sig;
|
|
|
|
temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16);
|
|
if (temp == NULL) {
|
|
snd_printk(KERN_ERR "Unable to scan for card signature in video RAM\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
sig = readl(temp);
|
|
if ((sig & NM_SIG_MASK) == NM_SIGNATURE) {
|
|
u32 pointer = readl(temp + 4);
|
|
|
|
/*
|
|
* If it's obviously invalid, don't use it
|
|
*/
|
|
if (pointer == 0xffffffff ||
|
|
pointer < chip->buffer_size ||
|
|
pointer > chip->buffer_end) {
|
|
snd_printk(KERN_ERR "invalid signature found: 0x%x\n", pointer);
|
|
iounmap(temp);
|
|
return -ENODEV;
|
|
} else {
|
|
pointer_found = pointer;
|
|
printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n",
|
|
pointer);
|
|
}
|
|
}
|
|
|
|
iounmap(temp);
|
|
chip->buffer_end = pointer_found;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
/*
|
|
* APM event handler, so the card is properly reinitialized after a power
|
|
* event.
|
|
*/
|
|
static int nm256_suspend(struct device *dev)
|
|
{
|
|
struct pci_dev *pci = to_pci_dev(dev);
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
struct nm256 *chip = card->private_data;
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
|
|
snd_pcm_suspend_all(chip->pcm);
|
|
snd_ac97_suspend(chip->ac97);
|
|
chip->coeffs_current = 0;
|
|
pci_disable_device(pci);
|
|
pci_save_state(pci);
|
|
pci_set_power_state(pci, PCI_D3hot);
|
|
return 0;
|
|
}
|
|
|
|
static int nm256_resume(struct device *dev)
|
|
{
|
|
struct pci_dev *pci = to_pci_dev(dev);
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
struct nm256 *chip = card->private_data;
|
|
int i;
|
|
|
|
/* Perform a full reset on the hardware */
|
|
chip->in_resume = 1;
|
|
|
|
pci_set_power_state(pci, PCI_D0);
|
|
pci_restore_state(pci);
|
|
if (pci_enable_device(pci) < 0) {
|
|
printk(KERN_ERR "nm256: pci_enable_device failed, "
|
|
"disabling device\n");
|
|
snd_card_disconnect(card);
|
|
return -EIO;
|
|
}
|
|
pci_set_master(pci);
|
|
|
|
snd_nm256_init_chip(chip);
|
|
|
|
/* restore ac97 */
|
|
snd_ac97_resume(chip->ac97);
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
struct nm256_stream *s = &chip->streams[i];
|
|
if (s->substream && s->suspended) {
|
|
spin_lock_irq(&chip->reg_lock);
|
|
snd_nm256_set_format(chip, s, s->substream);
|
|
spin_unlock_irq(&chip->reg_lock);
|
|
}
|
|
}
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
chip->in_resume = 0;
|
|
return 0;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(nm256_pm, nm256_suspend, nm256_resume);
|
|
#define NM256_PM_OPS &nm256_pm
|
|
#else
|
|
#define NM256_PM_OPS NULL
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static int snd_nm256_free(struct nm256 *chip)
|
|
{
|
|
if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
|
|
snd_nm256_playback_stop(chip);
|
|
if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
|
|
snd_nm256_capture_stop(chip);
|
|
|
|
if (chip->irq >= 0)
|
|
free_irq(chip->irq, chip);
|
|
|
|
if (chip->cport)
|
|
iounmap(chip->cport);
|
|
if (chip->buffer)
|
|
iounmap(chip->buffer);
|
|
release_and_free_resource(chip->res_cport);
|
|
release_and_free_resource(chip->res_buffer);
|
|
|
|
pci_disable_device(chip->pci);
|
|
kfree(chip->ac97_regs);
|
|
kfree(chip);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_nm256_dev_free(struct snd_device *device)
|
|
{
|
|
struct nm256 *chip = device->device_data;
|
|
return snd_nm256_free(chip);
|
|
}
|
|
|
|
static int
|
|
snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
|
|
struct nm256 **chip_ret)
|
|
{
|
|
struct nm256 *chip;
|
|
int err, pval;
|
|
static struct snd_device_ops ops = {
|
|
.dev_free = snd_nm256_dev_free,
|
|
};
|
|
u32 addr;
|
|
|
|
*chip_ret = NULL;
|
|
|
|
if ((err = pci_enable_device(pci)) < 0)
|
|
return err;
|
|
|
|
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
|
|
if (chip == NULL) {
|
|
pci_disable_device(pci);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
chip->card = card;
|
|
chip->pci = pci;
|
|
chip->use_cache = use_cache;
|
|
spin_lock_init(&chip->reg_lock);
|
|
chip->irq = -1;
|
|
mutex_init(&chip->irq_mutex);
|
|
|
|
/* store buffer sizes in bytes */
|
|
chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024;
|
|
chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024;
|
|
|
|
/*
|
|
* The NM256 has two memory ports. The first port is nothing
|
|
* more than a chunk of video RAM, which is used as the I/O ring
|
|
* buffer. The second port has the actual juicy stuff (like the
|
|
* mixer and the playback engine control registers).
|
|
*/
|
|
|
|
chip->buffer_addr = pci_resource_start(pci, 0);
|
|
chip->cport_addr = pci_resource_start(pci, 1);
|
|
|
|
/* Init the memory port info. */
|
|
/* remap control port (#2) */
|
|
chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
|
|
card->driver);
|
|
if (chip->res_cport == NULL) {
|
|
snd_printk(KERN_ERR "memory region 0x%lx (size 0x%x) busy\n",
|
|
chip->cport_addr, NM_PORT2_SIZE);
|
|
err = -EBUSY;
|
|
goto __error;
|
|
}
|
|
chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE);
|
|
if (chip->cport == NULL) {
|
|
snd_printk(KERN_ERR "unable to map control port %lx\n", chip->cport_addr);
|
|
err = -ENOMEM;
|
|
goto __error;
|
|
}
|
|
|
|
if (!strcmp(card->driver, "NM256AV")) {
|
|
/* Ok, try to see if this is a non-AC97 version of the hardware. */
|
|
pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE);
|
|
if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
|
|
if (! force_ac97) {
|
|
printk(KERN_ERR "nm256: no ac97 is found!\n");
|
|
printk(KERN_ERR " force the driver to load by "
|
|
"passing in the module parameter\n");
|
|
printk(KERN_ERR " force_ac97=1\n");
|
|
printk(KERN_ERR " or try sb16, opl3sa2, or "
|
|
"cs423x drivers instead.\n");
|
|
err = -ENXIO;
|
|
goto __error;
|
|
}
|
|
}
|
|
chip->buffer_end = 2560 * 1024;
|
|
chip->interrupt = snd_nm256_interrupt;
|
|
chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
|
|
chip->mixer_status_mask = NM_MIXER_READY_MASK;
|
|
} else {
|
|
/* Not sure if there is any relevant detect for the ZX or not. */
|
|
if (snd_nm256_readb(chip, 0xa0b) != 0)
|
|
chip->buffer_end = 6144 * 1024;
|
|
else
|
|
chip->buffer_end = 4096 * 1024;
|
|
|
|
chip->interrupt = snd_nm256_interrupt_zx;
|
|
chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
|
|
chip->mixer_status_mask = NM2_MIXER_READY_MASK;
|
|
}
|
|
|
|
chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize +
|
|
chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
|
|
if (chip->use_cache)
|
|
chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4;
|
|
else
|
|
chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE;
|
|
|
|
if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end)
|
|
chip->buffer_end = buffer_top;
|
|
else {
|
|
/* get buffer end pointer from signature */
|
|
if ((err = snd_nm256_peek_for_sig(chip)) < 0)
|
|
goto __error;
|
|
}
|
|
|
|
chip->buffer_start = chip->buffer_end - chip->buffer_size;
|
|
chip->buffer_addr += chip->buffer_start;
|
|
|
|
printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n",
|
|
chip->buffer_start, chip->buffer_end);
|
|
|
|
chip->res_buffer = request_mem_region(chip->buffer_addr,
|
|
chip->buffer_size,
|
|
card->driver);
|
|
if (chip->res_buffer == NULL) {
|
|
snd_printk(KERN_ERR "nm256: buffer 0x%lx (size 0x%x) busy\n",
|
|
chip->buffer_addr, chip->buffer_size);
|
|
err = -EBUSY;
|
|
goto __error;
|
|
}
|
|
chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size);
|
|
if (chip->buffer == NULL) {
|
|
err = -ENOMEM;
|
|
snd_printk(KERN_ERR "unable to map ring buffer at %lx\n", chip->buffer_addr);
|
|
goto __error;
|
|
}
|
|
|
|
/* set offsets */
|
|
addr = chip->buffer_start;
|
|
chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr;
|
|
addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize;
|
|
chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr;
|
|
addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
|
|
if (chip->use_cache) {
|
|
chip->all_coeff_buf = addr;
|
|
} else {
|
|
chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr;
|
|
addr += NM_MAX_PLAYBACK_COEF_SIZE;
|
|
chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr;
|
|
}
|
|
|
|
/* Fixed setting. */
|
|
chip->mixer_base = NM_MIXER_OFFSET;
|
|
|
|
chip->coeffs_current = 0;
|
|
|
|
snd_nm256_init_chip(chip);
|
|
|
|
// pci_set_master(pci); /* needed? */
|
|
|
|
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
|
|
goto __error;
|
|
|
|
snd_card_set_dev(card, &pci->dev);
|
|
|
|
*chip_ret = chip;
|
|
return 0;
|
|
|
|
__error:
|
|
snd_nm256_free(chip);
|
|
return err;
|
|
}
|
|
|
|
|
|
enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 };
|
|
|
|
static struct snd_pci_quirk nm256_quirks[] = {
|
|
/* HP omnibook 4150 has cs4232 codec internally */
|
|
SND_PCI_QUIRK(0x103c, 0x0007, "HP omnibook 4150", NM_BLACKLISTED),
|
|
/* Reset workarounds to avoid lock-ups */
|
|
SND_PCI_QUIRK(0x104d, 0x8041, "Sony PCG-F305", NM_RESET_WORKAROUND),
|
|
SND_PCI_QUIRK(0x1028, 0x0080, "Dell Latitude LS", NM_RESET_WORKAROUND),
|
|
SND_PCI_QUIRK(0x1028, 0x0091, "Dell Latitude CSx", NM_RESET_WORKAROUND_2),
|
|
{ } /* terminator */
|
|
};
|
|
|
|
|
|
static int snd_nm256_probe(struct pci_dev *pci,
|
|
const struct pci_device_id *pci_id)
|
|
{
|
|
struct snd_card *card;
|
|
struct nm256 *chip;
|
|
int err;
|
|
const struct snd_pci_quirk *q;
|
|
|
|
q = snd_pci_quirk_lookup(pci, nm256_quirks);
|
|
if (q) {
|
|
snd_printdd(KERN_INFO "nm256: Enabled quirk for %s.\n", q->name);
|
|
switch (q->value) {
|
|
case NM_BLACKLISTED:
|
|
printk(KERN_INFO "nm256: The device is blacklisted. "
|
|
"Loading stopped\n");
|
|
return -ENODEV;
|
|
case NM_RESET_WORKAROUND_2:
|
|
reset_workaround_2 = 1;
|
|
/* Fall-through */
|
|
case NM_RESET_WORKAROUND:
|
|
reset_workaround = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
err = snd_card_create(index, id, THIS_MODULE, 0, &card);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
switch (pci->device) {
|
|
case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
|
|
strcpy(card->driver, "NM256AV");
|
|
break;
|
|
case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO:
|
|
strcpy(card->driver, "NM256ZX");
|
|
break;
|
|
case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO:
|
|
strcpy(card->driver, "NM256XL+");
|
|
break;
|
|
default:
|
|
snd_printk(KERN_ERR "invalid device id 0x%x\n", pci->device);
|
|
snd_card_free(card);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (vaio_hack)
|
|
buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */
|
|
|
|
if (playback_bufsize < 4)
|
|
playback_bufsize = 4;
|
|
if (playback_bufsize > 128)
|
|
playback_bufsize = 128;
|
|
if (capture_bufsize < 4)
|
|
capture_bufsize = 4;
|
|
if (capture_bufsize > 128)
|
|
capture_bufsize = 128;
|
|
if ((err = snd_nm256_create(card, pci, &chip)) < 0) {
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
card->private_data = chip;
|
|
|
|
if (reset_workaround) {
|
|
snd_printdd(KERN_INFO "nm256: reset_workaround activated\n");
|
|
chip->reset_workaround = 1;
|
|
}
|
|
|
|
if (reset_workaround_2) {
|
|
snd_printdd(KERN_INFO "nm256: reset_workaround_2 activated\n");
|
|
chip->reset_workaround_2 = 1;
|
|
}
|
|
|
|
if ((err = snd_nm256_pcm(chip, 0)) < 0 ||
|
|
(err = snd_nm256_mixer(chip)) < 0) {
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
sprintf(card->shortname, "NeoMagic %s", card->driver);
|
|
sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
|
|
card->shortname,
|
|
chip->buffer_addr, chip->cport_addr, chip->irq);
|
|
|
|
if ((err = snd_card_register(card)) < 0) {
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
pci_set_drvdata(pci, card);
|
|
return 0;
|
|
}
|
|
|
|
static void snd_nm256_remove(struct pci_dev *pci)
|
|
{
|
|
snd_card_free(pci_get_drvdata(pci));
|
|
pci_set_drvdata(pci, NULL);
|
|
}
|
|
|
|
|
|
static struct pci_driver nm256_driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.id_table = snd_nm256_ids,
|
|
.probe = snd_nm256_probe,
|
|
.remove = snd_nm256_remove,
|
|
.driver = {
|
|
.pm = NM256_PM_OPS,
|
|
},
|
|
};
|
|
|
|
module_pci_driver(nm256_driver);
|