V4L/DVB (3293): Added digital support for cx88 (cx88-alsa)
- This module is co-authored by Ricardo Cerqueira <v4l@cerqueira.org>. - Added digital audio support for cx88-based boards that have function 01 enabled. These boards can be identified by having PCI id 1471:8801 or 1471:8811. - Increased DMA buffer from 512 to 4096 seems to fix audio distortion. - Existing audio DMA uses conflict with cx88-alsa. Should be disabled when cx88-alsa module is compiled. Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
This commit is contained in:
Mauro Carvalho Chehab
parent
0de71224d1
commit
b7f355d23c
4 changed files with 872 additions and 6 deletions
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@ -29,6 +29,21 @@ config VIDEO_CX88_DVB
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You must also select one or more DVB/ATSC demodulators.
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If you are unsure which you need, choose all of them.
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config VIDEO_CX88_ALSA
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tristate "ALSA DMA audio support"
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depends on VIDEO_CX88 && SND
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select SND_PCM_OSS
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---help---
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This is a video4linux driver for direct (DMA) audio on
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Conexant 2388x based TV cards.
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It only works with boards with function 01 enabled.
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To check if your board supports, use lspci -n.
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If supported, you should see 1471:8801 or 1471:8811
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PCI device.
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To compile this driver as a module, choose M here: the
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module will be called cx88-alsa.
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config VIDEO_CX88_DVB_ALL_FRONTENDS
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bool "Build all supported frontends for cx2388x based TV cards"
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default y
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848
drivers/media/video/cx88/cx88-alsa.c
Normal file
848
drivers/media/video/cx88/cx88-alsa.c
Normal file
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@ -0,0 +1,848 @@
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/*
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*
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* Support for audio capture
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* PCI function #1 of the cx2388x.
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*
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* (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
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* (c) 2005 Mauro Carvalho Chehab <mchehab@brturbo.com.br>
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* Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
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* Based on dummy.c by Jaroslav Kysela <perex@suse.cz>
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#include <asm/delay.h>
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#include <sound/driver.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/control.h>
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#include <sound/initval.h>
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#include "cx88.h"
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#include "cx88-reg.h"
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#define dprintk(level,fmt, arg...) if (debug >= level) \
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printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
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#define dprintk_core(level,fmt, arg...) if (debug >= level) \
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printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
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/****************************************************************************
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Data type declarations - Can be moded to a header file later
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****************************************************************************/
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/* These can be replaced after done */
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#define MIXER_ADDR_LAST MAX_CX88_INPUT
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struct cx88_audio_dev {
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struct cx88_core *core;
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struct cx88_dmaqueue q;
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/* pci i/o */
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struct pci_dev *pci;
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unsigned char pci_rev,pci_lat;
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/* audio controls */
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int irq;
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snd_card_t *card;
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spinlock_t reg_lock;
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unsigned int dma_size;
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unsigned int period_size;
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unsigned int num_periods;
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struct videobuf_dmabuf dma_risc;
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int mixer_volume[MIXER_ADDR_LAST+1][2];
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int capture_source[MIXER_ADDR_LAST+1][2];
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long int read_count;
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long int read_offset;
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struct cx88_buffer *buf;
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long opened;
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snd_pcm_substream_t *substream;
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};
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typedef struct cx88_audio_dev snd_cx88_card_t;
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/****************************************************************************
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Module global static vars
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****************************************************************************/
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
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static snd_card_t *snd_cx88_cards[SNDRV_CARDS];
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
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/****************************************************************************
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Module macros
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****************************************************************************/
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MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
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MODULE_AUTHOR("Ricardo Cerqueira");
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MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@brturbo.com.br>");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
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"{{Conexant,23882},"
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"{{Conexant,23883}");
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static unsigned int debug = 0;
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module_param(debug,int,0644);
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MODULE_PARM_DESC(debug,"enable debug messages");
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/****************************************************************************
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Module specific funtions
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****************************************************************************/
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/*
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* BOARD Specific: Sets audio DMA
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*/
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int _cx88_start_audio_dma(snd_cx88_card_t *chip)
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{
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struct cx88_buffer *buf = chip->buf;
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struct cx88_core *core=chip->core;
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struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
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dprintk(1, "Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x\n",buf->bpl, chip->num_periods, audio_ch->fifo_size / buf->bpl, audio_ch->fifo_start);
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/* setup fifo + format - out channel */
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cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25],
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buf->bpl, buf->risc.dma);
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/* sets bpl size */
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cx_write(MO_AUDD_LNGTH, buf->bpl);
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/* reset counter */
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cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET);
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dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02));
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/* enable irqs */
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cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02);
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/* Enables corresponding bits at AUD_INT_STAT */
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cx_write(MO_AUD_INTMSK,
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(1<<16)|
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(1<<12)|
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(1<<4)|
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(1<<0)
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);
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/* start dma */
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cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
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cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
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if (debug)
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cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
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return 0;
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}
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/*
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* BOARD Specific: Resets audio DMA
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*/
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int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
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{
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struct cx88_core *core=chip->core;
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dprintk(1, "Stopping audio DMA\n");
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/* stop dma */
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cx_clear(MO_AUD_DMACNTRL, 0x11);
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/* disable irqs */
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cx_clear(MO_PCI_INTMSK, 0x02);
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cx_clear(MO_AUD_INTMSK,
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(1<<16)|
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(1<<12)|
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(1<<4)|
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(1<<0)
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);
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if (debug)
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cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
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return 0;
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}
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#define MAX_IRQ_LOOP 10
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/*
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* BOARD Specific: IRQ dma bits
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*/
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static char *cx88_aud_irqs[32] = {
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"dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
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NULL, /* reserved */
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"dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
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NULL, /* reserved */
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"dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
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NULL, /* reserved */
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"dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
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NULL, /* reserved */
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"opc_err", "par_err", "rip_err", /* 16-18 */
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"pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
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};
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/*
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* BOARD Specific: Threats IRQ audio specific calls
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*/
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static void cx8801_aud_irq(snd_cx88_card_t *chip)
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{
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struct cx88_core *core = chip->core;
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u32 status, mask;
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u32 count;
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status = cx_read(MO_AUD_INTSTAT);
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mask = cx_read(MO_AUD_INTMSK);
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if (0 == (status & mask)) {
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spin_unlock(&chip->reg_lock);
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return;
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}
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cx_write(MO_AUD_INTSTAT, status);
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if (debug > 1 || (status & mask & ~0xff))
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cx88_print_irqbits(core->name, "irq aud",
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cx88_aud_irqs, status, mask);
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/* risc op code error */
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if (status & (1 << 16)) {
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printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name);
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cx_clear(MO_AUD_DMACNTRL, 0x11);
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cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
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}
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/* risc1 downstream */
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if (status & 0x01) {
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spin_lock(&chip->reg_lock);
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count = cx_read(MO_AUDD_GPCNT);
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spin_unlock(&chip->reg_lock);
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if (chip->read_count == 0)
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chip->read_count += chip->dma_size;
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}
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if (chip->read_count >= chip->period_size) {
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dprintk(2, "Elapsing period\n");
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snd_pcm_period_elapsed(chip->substream);
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}
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dprintk(3,"Leaving audio IRQ handler...\n");
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/* FIXME: Any other status should deserve a special handling? */
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}
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/*
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* BOARD Specific: Handles IRQ calls
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*/
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static irqreturn_t cx8801_irq(int irq, void *dev_id, struct pt_regs *regs)
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{
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snd_cx88_card_t *chip = dev_id;
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struct cx88_core *core = chip->core;
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u32 status;
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int loop, handled = 0;
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for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
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status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02);
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if (0 == status)
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goto out;
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dprintk( 3, "cx8801_irq\n" );
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dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
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dprintk( 3, " status: %d\n", status );
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handled = 1;
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cx_write(MO_PCI_INTSTAT, status);
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if (status & 0x02)
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{
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dprintk( 2, " ALSA IRQ handling\n" );
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cx8801_aud_irq(chip);
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}
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};
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if (MAX_IRQ_LOOP == loop) {
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dprintk( 0, "clearing mask\n" );
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dprintk(1,"%s/0: irq loop -- clearing mask\n",
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core->name);
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cx_clear(MO_PCI_INTMSK,0x02);
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}
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out:
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return IRQ_RETVAL(handled);
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}
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static int dsp_buffer_free(snd_cx88_card_t *chip)
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{
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BUG_ON(!chip->dma_size);
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dprintk(2,"Freeing buffer\n");
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videobuf_dma_pci_unmap(chip->pci, &chip->dma_risc);
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videobuf_dma_free(&chip->dma_risc);
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btcx_riscmem_free(chip->pci,&chip->buf->risc);
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kfree(chip->buf);
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chip->dma_size = 0;
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return 0;
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}
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/****************************************************************************
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ALSA PCM Interface
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****************************************************************************/
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/*
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* Digital hardware definition
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*/
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static snd_pcm_hardware_t snd_cx88_digital_hw = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = (2*2048),
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.period_bytes_min = 256,
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.period_bytes_max = 2048,
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.periods_min = 2,
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.periods_max = 16,
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};
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/*
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* audio pcm capture runtime free
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*/
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static void snd_card_cx88_runtime_free(snd_pcm_runtime_t *runtime)
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{
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}
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/*
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* audio pcm capture open callback
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*/
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static int snd_cx88_pcm_open(snd_pcm_substream_t *substream)
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{
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snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
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snd_pcm_runtime_t *runtime = substream->runtime;
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int err;
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if (test_and_set_bit(0, &chip->opened))
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return -EBUSY;
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err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
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if (err < 0)
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goto _error;
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chip->substream = substream;
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chip->read_count = 0;
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chip->read_offset = 0;
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runtime->private_free = snd_card_cx88_runtime_free;
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runtime->hw = snd_cx88_digital_hw;
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return 0;
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_error:
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dprintk(1,"Error opening PCM!\n");
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clear_bit(0, &chip->opened);
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smp_mb__after_clear_bit();
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return err;
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}
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/*
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* audio close callback
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*/
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static int snd_cx88_close(snd_pcm_substream_t *substream)
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{
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snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
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clear_bit(0, &chip->opened);
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smp_mb__after_clear_bit();
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return 0;
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}
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/*
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* hw_params callback
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*/
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static int snd_cx88_hw_params(snd_pcm_substream_t * substream,
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snd_pcm_hw_params_t * hw_params)
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{
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snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
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struct cx88_buffer *buf;
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if (substream->runtime->dma_area) {
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dsp_buffer_free(chip);
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substream->runtime->dma_area = NULL;
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}
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chip->period_size = params_period_bytes(hw_params);
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chip->num_periods = params_periods(hw_params);
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chip->dma_size = chip->period_size * params_periods(hw_params);
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BUG_ON(!chip->dma_size);
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dprintk(1,"Setting buffer\n");
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buf = kmalloc(sizeof(*buf),GFP_KERNEL);
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if (NULL == buf)
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return -ENOMEM;
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memset(buf,0,sizeof(*buf));
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buf->vb.memory = V4L2_MEMORY_MMAP;
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buf->vb.width = chip->period_size;
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buf->vb.height = chip->num_periods;
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buf->vb.size = chip->dma_size;
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buf->vb.field = V4L2_FIELD_NONE;
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videobuf_dma_init(&buf->vb.dma);
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videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
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(PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
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videobuf_dma_pci_map(chip->pci,&buf->vb.dma);
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cx88_risc_databuffer(chip->pci, &buf->risc,
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buf->vb.dma.sglist,
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buf->vb.width, buf->vb.height);
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buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
|
||||
buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
|
||||
|
||||
buf->vb.state = STATE_PREPARED;
|
||||
|
||||
buf->bpl = chip->period_size;
|
||||
chip->buf = buf;
|
||||
chip->dma_risc = buf->vb.dma;
|
||||
|
||||
dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages);
|
||||
substream->runtime->dma_area = chip->dma_risc.vmalloc;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* hw free callback
|
||||
*/
|
||||
static int snd_cx88_hw_free(snd_pcm_substream_t * substream)
|
||||
{
|
||||
|
||||
snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
if (substream->runtime->dma_area) {
|
||||
dsp_buffer_free(chip);
|
||||
substream->runtime->dma_area = NULL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* prepare callback
|
||||
*/
|
||||
static int snd_cx88_prepare(snd_pcm_substream_t *substream)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* trigger callback
|
||||
*/
|
||||
static int snd_cx88_card_trigger(snd_pcm_substream_t *substream, int cmd)
|
||||
{
|
||||
snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
|
||||
int err;
|
||||
|
||||
spin_lock(&chip->reg_lock);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
err=_cx88_start_audio_dma(chip);
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
err=_cx88_stop_audio_dma(chip);
|
||||
break;
|
||||
default:
|
||||
err=-EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
spin_unlock(&chip->reg_lock);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* pointer callback
|
||||
*/
|
||||
static snd_pcm_uframes_t snd_cx88_pointer(snd_pcm_substream_t *substream)
|
||||
{
|
||||
snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
|
||||
snd_pcm_runtime_t *runtime = substream->runtime;
|
||||
|
||||
if (chip->read_count) {
|
||||
chip->read_count -= snd_pcm_lib_period_bytes(substream);
|
||||
chip->read_offset += snd_pcm_lib_period_bytes(substream);
|
||||
if (chip->read_offset == chip->dma_size)
|
||||
chip->read_offset = 0;
|
||||
}
|
||||
|
||||
dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count);
|
||||
return bytes_to_frames(runtime, chip->read_offset);
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* operators
|
||||
*/
|
||||
static snd_pcm_ops_t snd_cx88_pcm_ops = {
|
||||
.open = snd_cx88_pcm_open,
|
||||
.close = snd_cx88_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = snd_cx88_hw_params,
|
||||
.hw_free = snd_cx88_hw_free,
|
||||
.prepare = snd_cx88_prepare,
|
||||
.trigger = snd_cx88_card_trigger,
|
||||
.pointer = snd_cx88_pointer,
|
||||
};
|
||||
|
||||
/*
|
||||
* create a PCM device
|
||||
*/
|
||||
static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
|
||||
{
|
||||
int err;
|
||||
snd_pcm_t *pcm;
|
||||
|
||||
err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
|
||||
if (err < 0)
|
||||
return err;
|
||||
pcm->private_data = chip;
|
||||
strcpy(pcm->name, name);
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
CONTROL INTERFACE
|
||||
****************************************************************************/
|
||||
static int snd_cx88_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
|
||||
{
|
||||
info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
||||
info->count = 1;
|
||||
info->value.integer.min = 0;
|
||||
info->value.integer.max = 0x3f;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* OK - TODO: test it */
|
||||
static int snd_cx88_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
|
||||
{
|
||||
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
||||
struct cx88_core *core=chip->core;
|
||||
|
||||
value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* OK - TODO: test it */
|
||||
static int snd_cx88_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
|
||||
{
|
||||
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
||||
struct cx88_core *core=chip->core;
|
||||
int v;
|
||||
u32 old_control;
|
||||
|
||||
spin_lock_irq(&chip->reg_lock);
|
||||
old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
|
||||
v = 0x3f - (value->value.integer.value[0] & 0x3f);
|
||||
cx_andor(AUD_VOL_CTL, 0x3f, v);
|
||||
spin_unlock_irq(&chip->reg_lock);
|
||||
|
||||
return v != old_control;
|
||||
}
|
||||
|
||||
static snd_kcontrol_new_t snd_cx88_capture_volume = {
|
||||
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
||||
.name = "Capture Volume",
|
||||
.info = snd_cx88_capture_volume_info,
|
||||
.get = snd_cx88_capture_volume_get,
|
||||
.put = snd_cx88_capture_volume_put,
|
||||
};
|
||||
|
||||
|
||||
/****************************************************************************
|
||||
Basic Flow for Sound Devices
|
||||
****************************************************************************/
|
||||
|
||||
/*
|
||||
* PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
|
||||
* Only boards with eeprom and byte 1 at eeprom=1 have it
|
||||
*/
|
||||
|
||||
struct pci_device_id cx88_audio_pci_tbl[] = {
|
||||
{0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
|
||||
{0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
|
||||
{0, }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
|
||||
|
||||
/*
|
||||
* Chip-specific destructor
|
||||
*/
|
||||
|
||||
static int snd_cx88_free(snd_cx88_card_t *chip)
|
||||
{
|
||||
|
||||
if (chip->irq >= 0){
|
||||
synchronize_irq(chip->irq);
|
||||
free_irq(chip->irq, chip);
|
||||
}
|
||||
|
||||
cx88_core_put(chip->core,chip->pci);
|
||||
|
||||
pci_disable_device(chip->pci);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Component Destructor
|
||||
*/
|
||||
static void snd_cx88_dev_free(snd_card_t * card)
|
||||
{
|
||||
snd_cx88_card_t *chip = card->private_data;
|
||||
|
||||
snd_cx88_free(chip);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Alsa Constructor - Component probe
|
||||
*/
|
||||
|
||||
static int devno=0;
|
||||
static int __devinit snd_cx88_create(snd_card_t *card, struct pci_dev *pci,
|
||||
snd_cx88_card_t **rchip)
|
||||
{
|
||||
snd_cx88_card_t *chip;
|
||||
struct cx88_core *core;
|
||||
int err;
|
||||
|
||||
*rchip = NULL;
|
||||
|
||||
err = pci_enable_device(pci);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
pci_set_master(pci);
|
||||
|
||||
chip = (snd_cx88_card_t *) card->private_data;
|
||||
|
||||
core = cx88_core_get(pci);
|
||||
|
||||
if (!pci_dma_supported(pci,0xffffffff)) {
|
||||
dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
|
||||
err = -EIO;
|
||||
cx88_core_put(core,pci);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
/* pci init */
|
||||
chip->card = card;
|
||||
chip->pci = pci;
|
||||
chip->irq = -1;
|
||||
spin_lock_init(&chip->reg_lock);
|
||||
|
||||
cx88_reset(core);
|
||||
if (NULL == core) {
|
||||
err = -EINVAL;
|
||||
kfree (chip);
|
||||
return err;
|
||||
}
|
||||
chip->core = core;
|
||||
|
||||
/* get irq */
|
||||
err = request_irq(chip->pci->irq, cx8801_irq,
|
||||
SA_SHIRQ | SA_INTERRUPT, chip->core->name, chip);
|
||||
if (err < 0) {
|
||||
dprintk(0, "%s: can't get IRQ %d\n",
|
||||
chip->core->name, chip->pci->irq);
|
||||
return err;
|
||||
}
|
||||
|
||||
/* print pci info */
|
||||
pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev);
|
||||
pci_read_config_byte(pci, PCI_LATENCY_TIMER, &chip->pci_lat);
|
||||
|
||||
dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
|
||||
"latency: %d, mmio: 0x%lx\n", core->name, devno,
|
||||
pci_name(pci), chip->pci_rev, pci->irq,
|
||||
chip->pci_lat,pci_resource_start(pci,0));
|
||||
|
||||
chip->irq = pci->irq;
|
||||
synchronize_irq(chip->irq);
|
||||
|
||||
snd_card_set_dev(card, &pci->dev);
|
||||
|
||||
*rchip = chip;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devinit cx88_audio_initdev(struct pci_dev *pci,
|
||||
const struct pci_device_id *pci_id)
|
||||
{
|
||||
snd_card_t *card;
|
||||
snd_cx88_card_t *chip;
|
||||
int err;
|
||||
|
||||
if (devno >= SNDRV_CARDS)
|
||||
return (-ENODEV);
|
||||
|
||||
if (!enable[devno]) {
|
||||
++devno;
|
||||
return (-ENOENT);
|
||||
}
|
||||
|
||||
card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
|
||||
if (!card)
|
||||
return (-ENOMEM);
|
||||
|
||||
card->private_free = snd_cx88_dev_free;
|
||||
|
||||
err = snd_cx88_create(card, pci, &chip);
|
||||
if (err < 0)
|
||||
return (err);
|
||||
|
||||
err = snd_cx88_pcm(chip, 0, "CX88 Digital");
|
||||
|
||||
if (err < 0) {
|
||||
snd_card_free(card);
|
||||
return (err);
|
||||
}
|
||||
|
||||
err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
|
||||
if (err < 0) {
|
||||
snd_card_free(card);
|
||||
return (err);
|
||||
}
|
||||
|
||||
strcpy (card->driver, "CX88x");
|
||||
sprintf(card->shortname, "Conexant CX%x", pci->device);
|
||||
sprintf(card->longname, "%s at %#lx",
|
||||
card->shortname, pci_resource_start(pci, 0));
|
||||
strcpy (card->mixername, "CX88");
|
||||
|
||||
dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
|
||||
card->driver,devno);
|
||||
|
||||
err = snd_card_register(card);
|
||||
if (err < 0) {
|
||||
snd_card_free(card);
|
||||
return (err);
|
||||
}
|
||||
snd_cx88_cards[devno] = card;
|
||||
|
||||
pci_set_drvdata(pci,card);
|
||||
|
||||
devno++;
|
||||
return 0;
|
||||
}
|
||||
/*
|
||||
* ALSA destructor
|
||||
*/
|
||||
static void __devexit cx88_audio_finidev(struct pci_dev *pci)
|
||||
{
|
||||
struct cx88_audio_dev *card = pci_get_drvdata(pci);
|
||||
|
||||
snd_card_free((void *)card);
|
||||
|
||||
pci_set_drvdata(pci, NULL);
|
||||
|
||||
devno--;
|
||||
}
|
||||
|
||||
/*
|
||||
* PCI driver definition
|
||||
*/
|
||||
|
||||
static struct pci_driver cx88_audio_pci_driver = {
|
||||
.name = "cx88_audio",
|
||||
.id_table = cx88_audio_pci_tbl,
|
||||
.probe = cx88_audio_initdev,
|
||||
.remove = cx88_audio_finidev,
|
||||
SND_PCI_PM_CALLBACKS
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
LINUX MODULE INIT
|
||||
****************************************************************************/
|
||||
|
||||
/*
|
||||
* module init
|
||||
*/
|
||||
static int cx88_audio_init(void)
|
||||
{
|
||||
printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
|
||||
(CX88_VERSION_CODE >> 16) & 0xff,
|
||||
(CX88_VERSION_CODE >> 8) & 0xff,
|
||||
CX88_VERSION_CODE & 0xff);
|
||||
#ifdef SNAPSHOT
|
||||
printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
|
||||
SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
|
||||
#endif
|
||||
return pci_register_driver(&cx88_audio_pci_driver);
|
||||
}
|
||||
|
||||
/*
|
||||
* module remove
|
||||
*/
|
||||
static void cx88_audio_fini(void)
|
||||
{
|
||||
|
||||
pci_unregister_driver(&cx88_audio_pci_driver);
|
||||
}
|
||||
|
||||
module_init(cx88_audio_init);
|
||||
module_exit(cx88_audio_fini);
|
||||
|
||||
/* ----------------------------------------------------------- */
|
||||
/*
|
||||
* Local variables:
|
||||
* c-basic-offset: 8
|
||||
* End:
|
||||
*/
|
||||
|
|
@ -238,9 +238,9 @@ cx88_free_buffer(struct pci_dev *pci, struct cx88_buffer *buf)
|
|||
* channel 22 (u video) - 2.0k
|
||||
* channel 23 (v video) - 2.0k
|
||||
* channel 24 (vbi) - 4.0k
|
||||
* channels 25+26 (audio) - 0.5k
|
||||
* channels 25+26 (audio) - 4.0k
|
||||
* channel 28 (mpeg) - 4.0k
|
||||
* TOTAL = 25.5k
|
||||
* TOTAL = 29.0k
|
||||
*
|
||||
* Every channel has 160 bytes control data (64 bytes instruction
|
||||
* queue and 6 CDT entries), which is close to 2k total.
|
||||
|
|
@ -306,7 +306,7 @@ struct sram_channel cx88_sram_channels[] = {
|
|||
.ctrl_start = 0x180680,
|
||||
.cdt = 0x180680 + 64,
|
||||
.fifo_start = 0x185400,
|
||||
.fifo_size = 0x000200,
|
||||
.fifo_size = 0x001000,
|
||||
.ptr1_reg = MO_DMA25_PTR1,
|
||||
.ptr2_reg = MO_DMA25_PTR2,
|
||||
.cnt1_reg = MO_DMA25_CNT1,
|
||||
|
|
@ -318,7 +318,7 @@ struct sram_channel cx88_sram_channels[] = {
|
|||
.ctrl_start = 0x180720,
|
||||
.cdt = 0x180680 + 64, /* same as audio IN */
|
||||
.fifo_start = 0x185400, /* same as audio IN */
|
||||
.fifo_size = 0x000200, /* same as audio IN */
|
||||
.fifo_size = 0x001000, /* same as audio IN */
|
||||
.ptr1_reg = MO_DMA26_PTR1,
|
||||
.ptr2_reg = MO_DMA26_PTR2,
|
||||
.cnt1_reg = MO_DMA26_CNT1,
|
||||
|
|
@ -329,7 +329,7 @@ struct sram_channel cx88_sram_channels[] = {
|
|||
.cmds_start = 0x180200,
|
||||
.ctrl_start = 0x1807C0,
|
||||
.cdt = 0x1807C0 + 64,
|
||||
.fifo_start = 0x185600,
|
||||
.fifo_start = 0x186400,
|
||||
.fifo_size = 0x001000,
|
||||
.ptr1_reg = MO_DMA28_PTR1,
|
||||
.ptr2_reg = MO_DMA28_PTR2,
|
||||
|
|
@ -795,7 +795,6 @@ int cx88_start_audio_dma(struct cx88_core *core)
|
|||
|
||||
/* start dma */
|
||||
cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -132,10 +132,14 @@ static void set_audio_finish(struct cx88_core *core, u32 ctl)
|
|||
{
|
||||
u32 volume;
|
||||
|
||||
#ifndef USING_CX88_ALSA
|
||||
/* restart dma; This avoids buzz in NICAM and is good in others */
|
||||
cx88_stop_audio_dma(core);
|
||||
#endif
|
||||
cx_write(AUD_RATE_THRES_DMD, 0x000000C0);
|
||||
#ifndef USING_CX88_ALSA
|
||||
cx88_start_audio_dma(core);
|
||||
#endif
|
||||
|
||||
if (cx88_boards[core->board].blackbird) {
|
||||
/* sets sound input from external adc */
|
||||
|
|
|
|||
Loading…
Reference in a new issue