forked from Minki/linux
609c4c12af
This fixes a NULL pointer deference when loading the cx88_dvb module for a Hauppauge HVR4000. The bugzilla bug report is here: https://bugzilla.kernel.org/show_bug.cgi?id=56271 The cause is that the wm8775 is optional, so even though the board info says there is one, it doesn't have to be there. Checking whether the module was actually loaded is much safer. Note that this driver is quite buggy when it comes to unloading and reloading modules. Unloading cx8800 and reloading it again will still cause a crash, most likely because either the i2c bus isn't unloaded at the right time and/or the v4l2_device_unregister isn't called at the right time. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Sebastian Frei <sebastian@familie-frei.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
978 lines
24 KiB
C
978 lines
24 KiB
C
/*
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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) 2007 Trent Piepho <xyzzy@speakeasy.org>
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* (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
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* (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
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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@perex.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 <linux/vmalloc.h>
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#include <linux/dma-mapping.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <asm/delay.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 <sound/tlv.h>
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#include <media/wm8775.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...) do { \
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if (debug + 1 > level) \
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printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg);\
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} while(0)
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#define dprintk_core(level, fmt, arg...) do { \
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if (debug + 1 > level) \
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printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg);\
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} while(0)
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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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struct cx88_audio_buffer {
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unsigned int bpl;
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struct btcx_riscmem risc;
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struct videobuf_dmabuf dma;
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};
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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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/* audio controls */
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int irq;
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struct snd_card *card;
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spinlock_t reg_lock;
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atomic_t count;
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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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struct cx88_audio_buffer *buf;
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struct snd_pcm_substream *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 const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
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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@infradead.org>");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(CX88_VERSION);
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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;
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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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static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
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{
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struct cx88_audio_buffer *buf = chip->buf;
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struct cx88_core *core=chip->core;
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const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
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/* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
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cx_clear(MO_AUD_DMACNTRL, 0x11);
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/* setup fifo + format - out channel */
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cx88_sram_channel_setup(chip->core, audio_ch, 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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atomic_set(&chip->count, 0);
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dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
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"byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
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chip->num_periods, buf->bpl * chip->num_periods);
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/* Enables corresponding bits at AUD_INT_STAT */
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cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
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AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
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/* Clean any pending interrupt bits already set */
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cx_write(MO_AUD_INTSTAT, ~0);
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/* enable audio irqs */
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cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
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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, audio_ch);
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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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static 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, PCI_INT_AUDINT);
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cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
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AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
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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 50
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/*
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* BOARD Specific: IRQ dma bits
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*/
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static const 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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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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return;
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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, ARRAY_SIZE(cx88_aud_irqs),
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status, mask);
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/* risc op code error */
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if (status & AUD_INT_OPC_ERR) {
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printk(KERN_WARNING "%s/1: 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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if (status & AUD_INT_DN_SYNC) {
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dprintk(1, "Downstream sync error\n");
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cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
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return;
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}
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/* risc1 downstream */
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if (status & AUD_INT_DN_RISCI1) {
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atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
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snd_pcm_period_elapsed(chip->substream);
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}
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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)
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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) &
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(core->pci_irqmask | PCI_INT_AUDINT);
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if (0 == status)
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goto out;
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dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
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loop, MAX_IRQ_LOOP, status);
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handled = 1;
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cx_write(MO_PCI_INTSTAT, status);
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if (status & core->pci_irqmask)
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cx88_core_irq(core, status);
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if (status & PCI_INT_AUDINT)
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cx8801_aud_irq(chip);
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}
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if (MAX_IRQ_LOOP == loop) {
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printk(KERN_ERR
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"%s/1: IRQ loop detected, disabling interrupts\n",
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core->name);
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cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
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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_unmap(&chip->pci->dev, 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_risc = NULL;
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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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#define DEFAULT_FIFO_SIZE 4096
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static const struct snd_pcm_hardware 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 = 2,
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.channels_max = 2,
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/* Analog audio output will be full of clicks and pops if there
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are not exactly four lines in the SRAM FIFO buffer. */
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.period_bytes_min = DEFAULT_FIFO_SIZE/4,
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.period_bytes_max = DEFAULT_FIFO_SIZE/4,
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.periods_min = 1,
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.periods_max = 1024,
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.buffer_bytes_max = (1024*1024),
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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(struct snd_pcm_substream *substream)
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{
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snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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int err;
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if (!chip) {
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printk(KERN_ERR "BUG: cx88 can't find device struct."
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" Can't proceed with open\n");
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return -ENODEV;
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}
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err = snd_pcm_hw_constraint_pow2(runtime, 0, 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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runtime->hw = snd_cx88_digital_hw;
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if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
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unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
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bpl &= ~7; /* must be multiple of 8 */
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runtime->hw.period_bytes_min = bpl;
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runtime->hw.period_bytes_max = bpl;
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}
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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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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(struct snd_pcm_substream *substream)
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{
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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(struct snd_pcm_substream * substream,
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struct snd_pcm_hw_params * 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 videobuf_dmabuf *dma;
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struct cx88_audio_buffer *buf;
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int ret;
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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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BUG_ON(chip->num_periods & (chip->num_periods-1));
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buf = kzalloc(sizeof(*buf), GFP_KERNEL);
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if (NULL == buf)
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return -ENOMEM;
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buf->bpl = chip->period_size;
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dma = &buf->dma;
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videobuf_dma_init(dma);
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ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
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(PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
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if (ret < 0)
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goto error;
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ret = videobuf_dma_map(&chip->pci->dev, dma);
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if (ret < 0)
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goto error;
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ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
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chip->period_size, chip->num_periods, 1);
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if (ret < 0)
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goto error;
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/* Loop back to start of program */
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buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
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buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
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chip->buf = buf;
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chip->dma_risc = dma;
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substream->runtime->dma_area = chip->dma_risc->vaddr;
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substream->runtime->dma_bytes = chip->dma_size;
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substream->runtime->dma_addr = 0;
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return 0;
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error:
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kfree(buf);
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return ret;
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}
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/*
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* hw free callback
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*/
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static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
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{
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snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
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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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return 0;
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}
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/*
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* prepare callback
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*/
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static int snd_cx88_prepare(struct snd_pcm_substream *substream)
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{
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return 0;
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}
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/*
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* trigger callback
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*/
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static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
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{
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snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
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int err;
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/* Local interrupts are already disabled by ALSA */
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spin_lock(&chip->reg_lock);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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err=_cx88_start_audio_dma(chip);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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err=_cx88_stop_audio_dma(chip);
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break;
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default:
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err=-EINVAL;
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break;
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}
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spin_unlock(&chip->reg_lock);
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|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* pointer callback
|
|
*/
|
|
static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
u16 count;
|
|
|
|
count = atomic_read(&chip->count);
|
|
|
|
// dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
|
|
// count, new, count & (runtime->periods-1),
|
|
// runtime->period_size * (count & (runtime->periods-1)));
|
|
return runtime->period_size * (count & (runtime->periods-1));
|
|
}
|
|
|
|
/*
|
|
* page callback (needed for mmap)
|
|
*/
|
|
static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
|
|
unsigned long offset)
|
|
{
|
|
void *pageptr = substream->runtime->dma_area + offset;
|
|
return vmalloc_to_page(pageptr);
|
|
}
|
|
|
|
/*
|
|
* operators
|
|
*/
|
|
static struct snd_pcm_ops 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,
|
|
.page = snd_cx88_page,
|
|
};
|
|
|
|
/*
|
|
* create a PCM device
|
|
*/
|
|
static int snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
|
|
{
|
|
int err;
|
|
struct snd_pcm *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_volume_info(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *info)
|
|
{
|
|
info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
info->count = 2;
|
|
info->value.integer.min = 0;
|
|
info->value.integer.max = 0x3f;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core=chip->core;
|
|
int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
|
|
bal = cx_read(AUD_BAL_CTL);
|
|
|
|
value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
|
|
vol -= (bal & 0x3f);
|
|
value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core = chip->core;
|
|
int left = value->value.integer.value[0];
|
|
int right = value->value.integer.value[1];
|
|
int v, b;
|
|
|
|
/* Pass volume & balance onto any WM8775 */
|
|
if (left >= right) {
|
|
v = left << 10;
|
|
b = left ? (0x8000 * right) / left : 0x8000;
|
|
} else {
|
|
v = right << 10;
|
|
b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
|
|
}
|
|
wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
|
|
wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
|
|
}
|
|
|
|
/* OK - TODO: test it */
|
|
static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core=chip->core;
|
|
int left, right, v, b;
|
|
int changed = 0;
|
|
u32 old;
|
|
|
|
if (core->sd_wm8775)
|
|
snd_cx88_wm8775_volume_put(kcontrol, value);
|
|
|
|
left = value->value.integer.value[0] & 0x3f;
|
|
right = value->value.integer.value[1] & 0x3f;
|
|
b = right - left;
|
|
if (b < 0) {
|
|
v = 0x3f - left;
|
|
b = (-b) | 0x40;
|
|
} else {
|
|
v = 0x3f - right;
|
|
}
|
|
/* Do we really know this will always be called with IRQs on? */
|
|
spin_lock_irq(&chip->reg_lock);
|
|
old = cx_read(AUD_VOL_CTL);
|
|
if (v != (old & 0x3f)) {
|
|
cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
|
|
changed = 1;
|
|
}
|
|
if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
|
|
cx_write(AUD_BAL_CTL, b);
|
|
changed = 1;
|
|
}
|
|
spin_unlock_irq(&chip->reg_lock);
|
|
|
|
return changed;
|
|
}
|
|
|
|
static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
|
|
|
|
static const struct snd_kcontrol_new snd_cx88_volume = {
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
|
|
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
|
|
.name = "Analog-TV Volume",
|
|
.info = snd_cx88_volume_info,
|
|
.get = snd_cx88_volume_get,
|
|
.put = snd_cx88_volume_put,
|
|
.tlv.p = snd_cx88_db_scale,
|
|
};
|
|
|
|
static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core = chip->core;
|
|
u32 bit = kcontrol->private_value;
|
|
|
|
value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core = chip->core;
|
|
u32 bit = kcontrol->private_value;
|
|
int ret = 0;
|
|
u32 vol;
|
|
|
|
spin_lock_irq(&chip->reg_lock);
|
|
vol = cx_read(AUD_VOL_CTL);
|
|
if (value->value.integer.value[0] != !(vol & bit)) {
|
|
vol ^= bit;
|
|
cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
|
|
/* Pass mute onto any WM8775 */
|
|
if (core->sd_wm8775 && ((1<<6) == bit))
|
|
wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
|
|
ret = 1;
|
|
}
|
|
spin_unlock_irq(&chip->reg_lock);
|
|
return ret;
|
|
}
|
|
|
|
static const struct snd_kcontrol_new snd_cx88_dac_switch = {
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Audio-Out Switch",
|
|
.info = snd_ctl_boolean_mono_info,
|
|
.get = snd_cx88_switch_get,
|
|
.put = snd_cx88_switch_put,
|
|
.private_value = (1<<8),
|
|
};
|
|
|
|
static const struct snd_kcontrol_new snd_cx88_source_switch = {
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Analog-TV Switch",
|
|
.info = snd_ctl_boolean_mono_info,
|
|
.get = snd_cx88_switch_get,
|
|
.put = snd_cx88_switch_put,
|
|
.private_value = (1<<6),
|
|
};
|
|
|
|
static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core = chip->core;
|
|
s32 val;
|
|
|
|
val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
|
|
value->value.integer.value[0] = val ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
|
|
struct cx88_core *core = chip->core;
|
|
struct v4l2_control client_ctl;
|
|
|
|
memset(&client_ctl, 0, sizeof(client_ctl));
|
|
client_ctl.value = 0 != value->value.integer.value[0];
|
|
client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
|
|
call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_kcontrol_new snd_cx88_alc_switch = {
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Line-In ALC Switch",
|
|
.info = snd_ctl_boolean_mono_info,
|
|
.get = snd_cx88_alc_get,
|
|
.put = snd_cx88_alc_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
|
|
*/
|
|
|
|
static const 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)
|
|
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(struct snd_card * card)
|
|
{
|
|
snd_cx88_card_t *chip = card->private_data;
|
|
|
|
snd_cx88_free(chip);
|
|
}
|
|
|
|
|
|
/*
|
|
* Alsa Constructor - Component probe
|
|
*/
|
|
|
|
static int devno;
|
|
static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
|
|
snd_cx88_card_t **rchip,
|
|
struct cx88_core **core_ptr)
|
|
{
|
|
snd_cx88_card_t *chip;
|
|
struct cx88_core *core;
|
|
int err;
|
|
unsigned char pci_lat;
|
|
|
|
*rchip = NULL;
|
|
|
|
err = pci_enable_device(pci);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
pci_set_master(pci);
|
|
|
|
chip = card->private_data;
|
|
|
|
core = cx88_core_get(pci);
|
|
if (NULL == core) {
|
|
err = -EINVAL;
|
|
return err;
|
|
}
|
|
|
|
if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
|
|
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);
|
|
|
|
chip->core = core;
|
|
|
|
/* get irq */
|
|
err = request_irq(chip->pci->irq, cx8801_irq,
|
|
IRQF_SHARED | IRQF_DISABLED, 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_LATENCY_TIMER, &pci_lat);
|
|
|
|
dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
|
|
"latency: %d, mmio: 0x%llx\n", core->name, devno,
|
|
pci_name(pci), pci->revision, pci->irq,
|
|
pci_lat, (unsigned long long)pci_resource_start(pci,0));
|
|
|
|
chip->irq = pci->irq;
|
|
synchronize_irq(chip->irq);
|
|
|
|
snd_card_set_dev(card, &pci->dev);
|
|
|
|
*rchip = chip;
|
|
*core_ptr = core;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cx88_audio_initdev(struct pci_dev *pci,
|
|
const struct pci_device_id *pci_id)
|
|
{
|
|
struct snd_card *card;
|
|
snd_cx88_card_t *chip;
|
|
struct cx88_core *core = NULL;
|
|
int err;
|
|
|
|
if (devno >= SNDRV_CARDS)
|
|
return (-ENODEV);
|
|
|
|
if (!enable[devno]) {
|
|
++devno;
|
|
return (-ENOENT);
|
|
}
|
|
|
|
err = snd_card_create(index[devno], id[devno], THIS_MODULE,
|
|
sizeof(snd_cx88_card_t), &card);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
card->private_free = snd_cx88_dev_free;
|
|
|
|
err = snd_cx88_create(card, pci, &chip, &core);
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
err = snd_cx88_pcm(chip, 0, "CX88 Digital");
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
|
|
if (err < 0)
|
|
goto error;
|
|
err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
|
|
if (err < 0)
|
|
goto error;
|
|
err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
/* If there's a wm8775 then add a Line-In ALC switch */
|
|
if (core->sd_wm8775)
|
|
snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
|
|
|
|
strcpy (card->driver, "CX88x");
|
|
sprintf(card->shortname, "Conexant CX%x", pci->device);
|
|
sprintf(card->longname, "%s at %#llx",
|
|
card->shortname,(unsigned long long)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)
|
|
goto error;
|
|
pci_set_drvdata(pci,card);
|
|
|
|
devno++;
|
|
return 0;
|
|
|
|
error:
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
/*
|
|
* ALSA destructor
|
|
*/
|
|
static void 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,
|
|
};
|
|
|
|
/****************************************************************************
|
|
LINUX MODULE INIT
|
|
****************************************************************************/
|
|
|
|
/*
|
|
* module init
|
|
*/
|
|
static int __init cx88_audio_init(void)
|
|
{
|
|
printk(KERN_INFO "cx2388x alsa driver version %s loaded\n",
|
|
CX88_VERSION);
|
|
return pci_register_driver(&cx88_audio_pci_driver);
|
|
}
|
|
|
|
/*
|
|
* module remove
|
|
*/
|
|
static void __exit cx88_audio_fini(void)
|
|
{
|
|
pci_unregister_driver(&cx88_audio_pci_driver);
|
|
}
|
|
|
|
module_init(cx88_audio_init);
|
|
module_exit(cx88_audio_fini);
|