forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1007 lines
23 KiB
1007 lines
23 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Support for audio capture |
|
* PCI function #1 of the cx2388x. |
|
* |
|
* (c) 2007 Trent Piepho <[email protected]> |
|
* (c) 2005,2006 Ricardo Cerqueira <[email protected]> |
|
* (c) 2005 Mauro Carvalho Chehab <[email protected]> |
|
* Based on a dummy cx88 module by Gerd Knorr <[email protected]> |
|
* Based on dummy.c by Jaroslav Kysela <[email protected]> |
|
*/ |
|
|
|
#include "cx88.h" |
|
#include "cx88-reg.h" |
|
|
|
#include <linux/module.h> |
|
#include <linux/init.h> |
|
#include <linux/delay.h> |
|
#include <linux/device.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/vmalloc.h> |
|
#include <linux/dma-mapping.h> |
|
#include <linux/pci.h> |
|
#include <linux/slab.h> |
|
|
|
#include <sound/core.h> |
|
#include <sound/pcm.h> |
|
#include <sound/pcm_params.h> |
|
#include <sound/control.h> |
|
#include <sound/initval.h> |
|
#include <sound/tlv.h> |
|
#include <media/i2c/wm8775.h> |
|
|
|
#define dprintk(level, fmt, arg...) do { \ |
|
if (debug + 1 > level) \ |
|
printk(KERN_DEBUG pr_fmt("%s: alsa: " fmt), \ |
|
chip->core->name, ##arg); \ |
|
} while (0) |
|
|
|
/* |
|
* Data type declarations - Can be moded to a header file later |
|
*/ |
|
|
|
struct cx88_audio_buffer { |
|
unsigned int bpl; |
|
struct cx88_riscmem risc; |
|
void *vaddr; |
|
struct scatterlist *sglist; |
|
int sglen; |
|
unsigned long nr_pages; |
|
}; |
|
|
|
struct cx88_audio_dev { |
|
struct cx88_core *core; |
|
struct cx88_dmaqueue q; |
|
|
|
/* pci i/o */ |
|
struct pci_dev *pci; |
|
|
|
/* audio controls */ |
|
int irq; |
|
|
|
struct snd_card *card; |
|
|
|
spinlock_t reg_lock; |
|
atomic_t count; |
|
|
|
unsigned int dma_size; |
|
unsigned int period_size; |
|
unsigned int num_periods; |
|
|
|
struct cx88_audio_buffer *buf; |
|
|
|
struct snd_pcm_substream *substream; |
|
}; |
|
|
|
/* |
|
* Module global static vars |
|
*/ |
|
|
|
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
|
static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
|
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
|
|
|
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 <[email protected]>"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_VERSION(CX88_VERSION); |
|
|
|
static unsigned int debug; |
|
module_param(debug, int, 0644); |
|
MODULE_PARM_DESC(debug, "enable debug messages"); |
|
|
|
/* |
|
* Module specific functions |
|
*/ |
|
|
|
/* |
|
* BOARD Specific: Sets audio DMA |
|
*/ |
|
|
|
static int _cx88_start_audio_dma(struct cx88_audio_dev *chip) |
|
{ |
|
struct cx88_audio_buffer *buf = chip->buf; |
|
struct cx88_core *core = chip->core; |
|
const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25]; |
|
|
|
/* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ |
|
cx_clear(MO_AUD_DMACNTRL, 0x11); |
|
|
|
/* setup fifo + format - out channel */ |
|
cx88_sram_channel_setup(chip->core, audio_ch, 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); |
|
atomic_set(&chip->count, 0); |
|
|
|
dprintk(1, |
|
"Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d byte buffer\n", |
|
buf->bpl, cx_read(audio_ch->cmds_start + 8) >> 1, |
|
chip->num_periods, buf->bpl * chip->num_periods); |
|
|
|
/* Enables corresponding bits at AUD_INT_STAT */ |
|
cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | |
|
AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); |
|
|
|
/* Clean any pending interrupt bits already set */ |
|
cx_write(MO_AUD_INTSTAT, ~0); |
|
|
|
/* enable audio irqs */ |
|
cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT); |
|
|
|
/* start dma */ |
|
|
|
/* Enables Risc Processor */ |
|
cx_set(MO_DEV_CNTRL2, (1 << 5)); |
|
/* audio downstream FIFO and RISC enable */ |
|
cx_set(MO_AUD_DMACNTRL, 0x11); |
|
|
|
if (debug) |
|
cx88_sram_channel_dump(chip->core, audio_ch); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* BOARD Specific: Resets audio DMA |
|
*/ |
|
static int _cx88_stop_audio_dma(struct cx88_audio_dev *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, PCI_INT_AUDINT); |
|
cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | |
|
AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); |
|
|
|
if (debug) |
|
cx88_sram_channel_dump(chip->core, |
|
&cx88_sram_channels[SRAM_CH25]); |
|
|
|
return 0; |
|
} |
|
|
|
#define MAX_IRQ_LOOP 50 |
|
|
|
/* |
|
* BOARD Specific: IRQ dma bits |
|
*/ |
|
static const 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(struct cx88_audio_dev *chip) |
|
{ |
|
struct cx88_core *core = chip->core; |
|
u32 status, mask; |
|
|
|
status = cx_read(MO_AUD_INTSTAT); |
|
mask = cx_read(MO_AUD_INTMSK); |
|
if (0 == (status & mask)) |
|
return; |
|
cx_write(MO_AUD_INTSTAT, status); |
|
if (debug > 1 || (status & mask & ~0xff)) |
|
cx88_print_irqbits("irq aud", |
|
cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs), |
|
status, mask); |
|
/* risc op code error */ |
|
if (status & AUD_INT_OPC_ERR) { |
|
pr_warn("Audio risc op code error\n"); |
|
cx_clear(MO_AUD_DMACNTRL, 0x11); |
|
cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]); |
|
} |
|
if (status & AUD_INT_DN_SYNC) { |
|
dprintk(1, "Downstream sync error\n"); |
|
cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET); |
|
return; |
|
} |
|
/* risc1 downstream */ |
|
if (status & AUD_INT_DN_RISCI1) { |
|
atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT)); |
|
snd_pcm_period_elapsed(chip->substream); |
|
} |
|
/* 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 cx88_audio_dev *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 | PCI_INT_AUDINT); |
|
if (status == 0) |
|
goto out; |
|
dprintk(3, "cx8801_irq loop %d/%d, status %x\n", |
|
loop, MAX_IRQ_LOOP, status); |
|
handled = 1; |
|
cx_write(MO_PCI_INTSTAT, status); |
|
|
|
if (status & core->pci_irqmask) |
|
cx88_core_irq(core, status); |
|
if (status & PCI_INT_AUDINT) |
|
cx8801_aud_irq(chip); |
|
} |
|
|
|
if (loop == MAX_IRQ_LOOP) { |
|
pr_err("IRQ loop detected, disabling interrupts\n"); |
|
cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT); |
|
} |
|
|
|
out: |
|
return IRQ_RETVAL(handled); |
|
} |
|
|
|
static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, |
|
unsigned long nr_pages) |
|
{ |
|
struct cx88_audio_buffer *buf = chip->buf; |
|
struct page *pg; |
|
int i; |
|
|
|
buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT); |
|
if (!buf->vaddr) { |
|
dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages); |
|
return -ENOMEM; |
|
} |
|
|
|
dprintk(1, "vmalloc is at addr %p, size=%lu\n", |
|
buf->vaddr, nr_pages << PAGE_SHIFT); |
|
|
|
memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); |
|
buf->nr_pages = nr_pages; |
|
|
|
buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); |
|
if (!buf->sglist) |
|
goto vzalloc_err; |
|
|
|
sg_init_table(buf->sglist, buf->nr_pages); |
|
for (i = 0; i < buf->nr_pages; i++) { |
|
pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE); |
|
if (!pg) |
|
goto vmalloc_to_page_err; |
|
sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0); |
|
} |
|
return 0; |
|
|
|
vmalloc_to_page_err: |
|
vfree(buf->sglist); |
|
buf->sglist = NULL; |
|
vzalloc_err: |
|
vfree(buf->vaddr); |
|
buf->vaddr = NULL; |
|
return -ENOMEM; |
|
} |
|
|
|
static int cx88_alsa_dma_map(struct cx88_audio_dev *dev) |
|
{ |
|
struct cx88_audio_buffer *buf = dev->buf; |
|
|
|
buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist, |
|
buf->nr_pages, DMA_FROM_DEVICE); |
|
|
|
if (buf->sglen == 0) { |
|
pr_warn("%s: cx88_alsa_map_sg failed\n", __func__); |
|
return -ENOMEM; |
|
} |
|
return 0; |
|
} |
|
|
|
static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev) |
|
{ |
|
struct cx88_audio_buffer *buf = dev->buf; |
|
|
|
if (!buf->sglen) |
|
return 0; |
|
|
|
dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->nr_pages, |
|
DMA_FROM_DEVICE); |
|
buf->sglen = 0; |
|
return 0; |
|
} |
|
|
|
static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf) |
|
{ |
|
vfree(buf->sglist); |
|
buf->sglist = NULL; |
|
vfree(buf->vaddr); |
|
buf->vaddr = NULL; |
|
return 0; |
|
} |
|
|
|
static int dsp_buffer_free(struct cx88_audio_dev *chip) |
|
{ |
|
struct cx88_riscmem *risc = &chip->buf->risc; |
|
|
|
WARN_ON(!chip->dma_size); |
|
|
|
dprintk(2, "Freeing buffer\n"); |
|
cx88_alsa_dma_unmap(chip); |
|
cx88_alsa_dma_free(chip->buf); |
|
if (risc->cpu) |
|
pci_free_consistent(chip->pci, risc->size, |
|
risc->cpu, risc->dma); |
|
kfree(chip->buf); |
|
|
|
chip->buf = NULL; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* ALSA PCM Interface |
|
*/ |
|
|
|
/* |
|
* Digital hardware definition |
|
*/ |
|
#define DEFAULT_FIFO_SIZE 4096 |
|
static const struct snd_pcm_hardware 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 = 2, |
|
.channels_max = 2, |
|
/* |
|
* Analog audio output will be full of clicks and pops if there |
|
* are not exactly four lines in the SRAM FIFO buffer. |
|
*/ |
|
.period_bytes_min = DEFAULT_FIFO_SIZE / 4, |
|
.period_bytes_max = DEFAULT_FIFO_SIZE / 4, |
|
.periods_min = 1, |
|
.periods_max = 1024, |
|
.buffer_bytes_max = (1024 * 1024), |
|
}; |
|
|
|
/* |
|
* audio pcm capture open callback |
|
*/ |
|
static int snd_cx88_pcm_open(struct snd_pcm_substream *substream) |
|
{ |
|
struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
int err; |
|
|
|
if (!chip) { |
|
pr_err("BUG: cx88 can't find device struct. Can't proceed with open\n"); |
|
return -ENODEV; |
|
} |
|
|
|
err = snd_pcm_hw_constraint_pow2(runtime, 0, |
|
SNDRV_PCM_HW_PARAM_PERIODS); |
|
if (err < 0) |
|
goto _error; |
|
|
|
chip->substream = substream; |
|
|
|
runtime->hw = snd_cx88_digital_hw; |
|
|
|
if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) { |
|
unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4; |
|
|
|
bpl &= ~7; /* must be multiple of 8 */ |
|
runtime->hw.period_bytes_min = bpl; |
|
runtime->hw.period_bytes_max = bpl; |
|
} |
|
|
|
return 0; |
|
_error: |
|
dprintk(1, "Error opening PCM!\n"); |
|
return err; |
|
} |
|
|
|
/* |
|
* audio close callback |
|
*/ |
|
static int snd_cx88_close(struct snd_pcm_substream *substream) |
|
{ |
|
return 0; |
|
} |
|
|
|
/* |
|
* hw_params callback |
|
*/ |
|
static int snd_cx88_hw_params(struct snd_pcm_substream *substream, |
|
struct snd_pcm_hw_params *hw_params) |
|
{ |
|
struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); |
|
|
|
struct cx88_audio_buffer *buf; |
|
int ret; |
|
|
|
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); |
|
|
|
WARN_ON(!chip->dma_size); |
|
WARN_ON(chip->num_periods & (chip->num_periods - 1)); |
|
|
|
buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
chip->buf = buf; |
|
buf->bpl = chip->period_size; |
|
|
|
ret = cx88_alsa_dma_init(chip, |
|
(PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); |
|
if (ret < 0) |
|
goto error; |
|
|
|
ret = cx88_alsa_dma_map(chip); |
|
if (ret < 0) |
|
goto error; |
|
|
|
ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist, |
|
chip->period_size, chip->num_periods, 1); |
|
if (ret < 0) |
|
goto error; |
|
|
|
/* Loop back to start of program */ |
|
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); |
|
buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
|
|
|
substream->runtime->dma_area = chip->buf->vaddr; |
|
substream->runtime->dma_bytes = chip->dma_size; |
|
substream->runtime->dma_addr = 0; |
|
return 0; |
|
|
|
error: |
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
/* |
|
* hw free callback |
|
*/ |
|
static int snd_cx88_hw_free(struct snd_pcm_substream *substream) |
|
{ |
|
struct cx88_audio_dev *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(struct snd_pcm_substream *substream) |
|
{ |
|
return 0; |
|
} |
|
|
|
/* |
|
* trigger callback |
|
*/ |
|
static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd) |
|
{ |
|
struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); |
|
int err; |
|
|
|
/* Local interrupts are already disabled by ALSA */ |
|
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(struct snd_pcm_substream *substream) |
|
{ |
|
struct cx88_audio_dev *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 const struct snd_pcm_ops snd_cx88_pcm_ops = { |
|
.open = snd_cx88_pcm_open, |
|
.close = snd_cx88_close, |
|
.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(struct cx88_audio_dev *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; |
|
strscpy(pcm->name, name, sizeof(pcm->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) |
|
{ |
|
struct cx88_audio_dev *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) |
|
{ |
|
struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); |
|
struct cx88_core *core = chip->core; |
|
u16 left = value->value.integer.value[0]; |
|
u16 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) |
|
{ |
|
struct cx88_audio_dev *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) |
|
{ |
|
struct cx88_audio_dev *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) |
|
{ |
|
struct cx88_audio_dev *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) |
|
{ |
|
struct cx88_audio_dev *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) |
|
{ |
|
struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); |
|
struct cx88_core *core = chip->core; |
|
|
|
wm8775_s_ctrl(core, V4L2_CID_AUDIO_LOUDNESS, |
|
value->value.integer.value[0] != 0); |
|
return 0; |
|
} |
|
|
|
static const 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(struct cx88_audio_dev *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) |
|
{ |
|
struct cx88_audio_dev *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, |
|
struct cx88_audio_dev **rchip, |
|
struct cx88_core **core_ptr) |
|
{ |
|
struct cx88_audio_dev *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 (!core) { |
|
err = -EINVAL; |
|
return err; |
|
} |
|
|
|
err = pci_set_dma_mask(pci, DMA_BIT_MASK(32)); |
|
if (err) { |
|
dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n", core->name); |
|
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, 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); |
|
|
|
*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; |
|
struct cx88_audio_dev *chip; |
|
struct cx88_core *core = NULL; |
|
int err; |
|
|
|
if (devno >= SNDRV_CARDS) |
|
return (-ENODEV); |
|
|
|
if (!enable[devno]) { |
|
++devno; |
|
return (-ENOENT); |
|
} |
|
|
|
err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE, |
|
sizeof(struct cx88_audio_dev), &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) { |
|
err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip)); |
|
if (err < 0) |
|
goto error; |
|
} |
|
|
|
strscpy(card->driver, "CX88x", sizeof(card->driver)); |
|
sprintf(card->shortname, "Conexant CX%x", pci->device); |
|
sprintf(card->longname, "%s at %#llx", |
|
card->shortname, |
|
(unsigned long long)pci_resource_start(pci, 0)); |
|
strscpy(card->mixername, "CX88", sizeof(card->mixername)); |
|
|
|
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 snd_card *card = pci_get_drvdata(pci); |
|
|
|
snd_card_free(card); |
|
|
|
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, |
|
}; |
|
|
|
module_pci_driver(cx88_audio_pci_driver);
|
|
|