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>
diff --git a/drivers/media/video/cx88/Kconfig b/drivers/media/video/cx88/Kconfig
index ec6201a..76fcb4e 100644
--- a/drivers/media/video/cx88/Kconfig
+++ b/drivers/media/video/cx88/Kconfig
@@ -29,6 +29,21 @@
You must also select one or more DVB/ATSC demodulators.
If you are unsure which you need, choose all of them.
+config VIDEO_CX88_ALSA
+ tristate "ALSA DMA audio support"
+ depends on VIDEO_CX88 && SND
+ select SND_PCM_OSS
+ ---help---
+ This is a video4linux driver for direct (DMA) audio on
+ Conexant 2388x based TV cards.
+ It only works with boards with function 01 enabled.
+ To check if your board supports, use lspci -n.
+ If supported, you should see 1471:8801 or 1471:8811
+ PCI device.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cx88-alsa.
+
config VIDEO_CX88_DVB_ALL_FRONTENDS
bool "Build all supported frontends for cx2388x based TV cards"
default y
diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c
new file mode 100644
index 0000000..7695b52
--- /dev/null
+++ b/drivers/media/video/cx88/cx88-alsa.c
@@ -0,0 +1,848 @@
+/*
+ *
+ * Support for audio capture
+ * PCI function #1 of the cx2388x.
+ *
+ * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
+ * (c) 2005 Mauro Carvalho Chehab <mchehab@brturbo.com.br>
+ * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
+ * Based on dummy.c by Jaroslav Kysela <perex@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <asm/delay.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+
+#include "cx88.h"
+#include "cx88-reg.h"
+
+#define dprintk(level,fmt, arg...) if (debug >= level) \
+ printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
+
+#define dprintk_core(level,fmt, arg...) if (debug >= level) \
+ printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
+
+
+/****************************************************************************
+ Data type declarations - Can be moded to a header file later
+ ****************************************************************************/
+
+/* These can be replaced after done */
+#define MIXER_ADDR_LAST MAX_CX88_INPUT
+
+struct cx88_audio_dev {
+ struct cx88_core *core;
+ struct cx88_dmaqueue q;
+
+ /* pci i/o */
+ struct pci_dev *pci;
+ unsigned char pci_rev,pci_lat;
+
+ /* audio controls */
+ int irq;
+
+ snd_card_t *card;
+
+ spinlock_t reg_lock;
+
+ unsigned int dma_size;
+ unsigned int period_size;
+ unsigned int num_periods;
+
+ struct videobuf_dmabuf dma_risc;
+
+ int mixer_volume[MIXER_ADDR_LAST+1][2];
+ int capture_source[MIXER_ADDR_LAST+1][2];
+
+ long int read_count;
+ long int read_offset;
+
+ struct cx88_buffer *buf;
+
+ long opened;
+ snd_pcm_substream_t *substream;
+
+};
+typedef struct cx88_audio_dev snd_cx88_card_t;
+
+
+
+/****************************************************************************
+ Module global static vars
+ ****************************************************************************/
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
+static snd_card_t *snd_cx88_cards[SNDRV_CARDS];
+
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
+
+
+/****************************************************************************
+ Module macros
+ ****************************************************************************/
+
+MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
+MODULE_AUTHOR("Ricardo Cerqueira");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@brturbo.com.br>");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
+ "{{Conexant,23882},"
+ "{{Conexant,23883}");
+static unsigned int debug = 0;
+module_param(debug,int,0644);
+MODULE_PARM_DESC(debug,"enable debug messages");
+
+/****************************************************************************
+ Module specific funtions
+ ****************************************************************************/
+
+/*
+ * BOARD Specific: Sets audio DMA
+ */
+
+int _cx88_start_audio_dma(snd_cx88_card_t *chip)
+{
+ struct cx88_buffer *buf = chip->buf;
+ struct cx88_core *core=chip->core;
+ struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
+
+
+ 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);
+
+ /* setup fifo + format - out channel */
+ cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25],
+ buf->bpl, buf->risc.dma);
+
+ /* sets bpl size */
+ cx_write(MO_AUDD_LNGTH, buf->bpl);
+
+ /* reset counter */
+ cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET);
+
+ dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02));
+ /* enable irqs */
+ cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02);
+
+
+ /* Enables corresponding bits at AUD_INT_STAT */
+ cx_write(MO_AUD_INTMSK,
+ (1<<16)|
+ (1<<12)|
+ (1<<4)|
+ (1<<0)
+ );
+
+ /* start dma */
+ cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
+ cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
+
+ if (debug)
+ cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
+
+ return 0;
+}
+
+/*
+ * BOARD Specific: Resets audio DMA
+ */
+int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
+{
+ struct cx88_core *core=chip->core;
+ dprintk(1, "Stopping audio DMA\n");
+
+ /* stop dma */
+ cx_clear(MO_AUD_DMACNTRL, 0x11);
+
+ /* disable irqs */
+ cx_clear(MO_PCI_INTMSK, 0x02);
+ cx_clear(MO_AUD_INTMSK,
+ (1<<16)|
+ (1<<12)|
+ (1<<4)|
+ (1<<0)
+ );
+
+ if (debug)
+ cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
+
+ return 0;
+}
+
+#define MAX_IRQ_LOOP 10
+
+/*
+ * BOARD Specific: IRQ dma bits
+ */
+static char *cx88_aud_irqs[32] = {
+ "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
+ NULL, /* reserved */
+ "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
+ NULL, /* reserved */
+ "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
+ NULL, /* reserved */
+ "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
+ NULL, /* reserved */
+ "opc_err", "par_err", "rip_err", /* 16-18 */
+ "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
+};
+
+/*
+ * BOARD Specific: Threats IRQ audio specific calls
+ */
+static void cx8801_aud_irq(snd_cx88_card_t *chip)
+{
+ struct cx88_core *core = chip->core;
+ u32 status, mask;
+ u32 count;
+
+ status = cx_read(MO_AUD_INTSTAT);
+ mask = cx_read(MO_AUD_INTMSK);
+ if (0 == (status & mask)) {
+ spin_unlock(&chip->reg_lock);
+ return;
+ }
+ cx_write(MO_AUD_INTSTAT, status);
+ if (debug > 1 || (status & mask & ~0xff))
+ cx88_print_irqbits(core->name, "irq aud",
+ cx88_aud_irqs, status, mask);
+ /* risc op code error */
+ if (status & (1 << 16)) {
+ printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name);
+ cx_clear(MO_AUD_DMACNTRL, 0x11);
+ cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
+ }
+
+ /* risc1 downstream */
+ if (status & 0x01) {
+ spin_lock(&chip->reg_lock);
+ count = cx_read(MO_AUDD_GPCNT);
+ spin_unlock(&chip->reg_lock);
+ if (chip->read_count == 0)
+ chip->read_count += chip->dma_size;
+ }
+
+ if (chip->read_count >= chip->period_size) {
+ dprintk(2, "Elapsing period\n");
+ snd_pcm_period_elapsed(chip->substream);
+ }
+
+ dprintk(3,"Leaving audio IRQ handler...\n");
+
+ /* FIXME: Any other status should deserve a special handling? */
+}
+
+/*
+ * BOARD Specific: Handles IRQ calls
+ */
+static irqreturn_t cx8801_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ snd_cx88_card_t *chip = dev_id;
+ struct cx88_core *core = chip->core;
+ u32 status;
+ int loop, handled = 0;
+
+ for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
+ status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02);
+ if (0 == status)
+ goto out;
+ dprintk( 3, "cx8801_irq\n" );
+ dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
+ dprintk( 3, " status: %d\n", status );
+ handled = 1;
+ cx_write(MO_PCI_INTSTAT, status);
+
+ if (status & 0x02)
+ {
+ dprintk( 2, " ALSA IRQ handling\n" );
+ cx8801_aud_irq(chip);
+ }
+ };
+
+ if (MAX_IRQ_LOOP == loop) {
+ dprintk( 0, "clearing mask\n" );
+ dprintk(1,"%s/0: irq loop -- clearing mask\n",
+ core->name);
+ cx_clear(MO_PCI_INTMSK,0x02);
+ }
+
+ out:
+ return IRQ_RETVAL(handled);
+}
+
+
+static int dsp_buffer_free(snd_cx88_card_t *chip)
+{
+ BUG_ON(!chip->dma_size);
+
+ dprintk(2,"Freeing buffer\n");
+ videobuf_dma_pci_unmap(chip->pci, &chip->dma_risc);
+ videobuf_dma_free(&chip->dma_risc);
+ btcx_riscmem_free(chip->pci,&chip->buf->risc);
+ kfree(chip->buf);
+
+ chip->dma_size = 0;
+
+ return 0;
+}
+
+/****************************************************************************
+ ALSA PCM Interface
+ ****************************************************************************/
+
+/*
+ * Digital hardware definition
+ */
+static snd_pcm_hardware_t snd_cx88_digital_hw = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = (2*2048),
+ .period_bytes_min = 256,
+ .period_bytes_max = 2048,
+ .periods_min = 2,
+ .periods_max = 16,
+};
+
+/*
+ * audio pcm capture runtime free
+ */
+static void snd_card_cx88_runtime_free(snd_pcm_runtime_t *runtime)
+{
+}
+/*
+ * audio pcm capture open callback
+ */
+static int snd_cx88_pcm_open(snd_pcm_substream_t *substream)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ int err;
+
+ if (test_and_set_bit(0, &chip->opened))
+ return -EBUSY;
+
+ err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0)
+ goto _error;
+
+ chip->substream = substream;
+
+ chip->read_count = 0;
+ chip->read_offset = 0;
+
+ runtime->private_free = snd_card_cx88_runtime_free;
+ runtime->hw = snd_cx88_digital_hw;
+
+ return 0;
+_error:
+ dprintk(1,"Error opening PCM!\n");
+ clear_bit(0, &chip->opened);
+ smp_mb__after_clear_bit();
+ return err;
+}
+
+/*
+ * audio close callback
+ */
+static int snd_cx88_close(snd_pcm_substream_t *substream)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+
+ clear_bit(0, &chip->opened);
+ smp_mb__after_clear_bit();
+
+ return 0;
+}
+
+/*
+ * hw_params callback
+ */
+static int snd_cx88_hw_params(snd_pcm_substream_t * substream,
+ snd_pcm_hw_params_t * hw_params)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+ struct cx88_buffer *buf;
+
+ if (substream->runtime->dma_area) {
+ dsp_buffer_free(chip);
+ substream->runtime->dma_area = NULL;
+ }
+
+
+ chip->period_size = params_period_bytes(hw_params);
+ chip->num_periods = params_periods(hw_params);
+ chip->dma_size = chip->period_size * params_periods(hw_params);
+
+ BUG_ON(!chip->dma_size);
+
+ dprintk(1,"Setting buffer\n");
+
+ buf = kmalloc(sizeof(*buf),GFP_KERNEL);
+ if (NULL == buf)
+ return -ENOMEM;
+ memset(buf,0,sizeof(*buf));
+
+
+ buf->vb.memory = V4L2_MEMORY_MMAP;
+ buf->vb.width = chip->period_size;
+ buf->vb.height = chip->num_periods;
+ buf->vb.size = chip->dma_size;
+ buf->vb.field = V4L2_FIELD_NONE;
+
+ videobuf_dma_init(&buf->vb.dma);
+ videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
+ (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
+
+ videobuf_dma_pci_map(chip->pci,&buf->vb.dma);
+
+
+ cx88_risc_databuffer(chip->pci, &buf->risc,
+ buf->vb.dma.sglist,
+ buf->vb.width, buf->vb.height);
+
+ 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:
+ */
diff --git a/drivers/media/video/cx88/cx88-core.c b/drivers/media/video/cx88/cx88-core.c
index fc814d1..9975be1 100644
--- a/drivers/media/video/cx88/cx88-core.c
+++ b/drivers/media/video/cx88/cx88-core.c
@@ -238,9 +238,9 @@
* 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 @@
.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 @@
.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 @@
.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 @@
/* start dma */
cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */
-
return 0;
}
diff --git a/drivers/media/video/cx88/cx88-tvaudio.c b/drivers/media/video/cx88/cx88-tvaudio.c
index 00051a4..24118e4 100644
--- a/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/drivers/media/video/cx88/cx88-tvaudio.c
@@ -132,10 +132,14 @@
{
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 */