diff options
Diffstat (limited to 'sound/drivers')
| -rw-r--r-- | sound/drivers/dummy.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c index 2ee6c8ebe25a..ccfbdfa75511 100644 --- a/sound/drivers/dummy.c +++ b/sound/drivers/dummy.c @@ -33,6 +33,7 @@ #include <sound/tlv.h> #include <sound/pcm.h> #include <sound/rawmidi.h> +#include <sound/info.h> #include <sound/initval.h> MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); @@ -686,6 +687,10 @@ static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device, return 0; } +/* + * mixer interface + */ + #define DUMMY_VOLUME(xname, xindex, addr) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ @@ -816,6 +821,131 @@ static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy) return 0; } +#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_PROC_FS) +/* + * proc interface + */ +static void print_formats(struct snd_info_buffer *buffer) +{ + int i; + + for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) { + if (dummy_pcm_hardware.formats & (1ULL << i)) + snd_iprintf(buffer, " %s", snd_pcm_format_name(i)); + } +} + +static void print_rates(struct snd_info_buffer *buffer) +{ + static int rates[] = { + 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, + 64000, 88200, 96000, 176400, 192000, + }; + int i; + + if (dummy_pcm_hardware.rates & SNDRV_PCM_RATE_CONTINUOUS) + snd_iprintf(buffer, " continuous"); + if (dummy_pcm_hardware.rates & SNDRV_PCM_RATE_KNOT) + snd_iprintf(buffer, " knot"); + for (i = 0; i < ARRAY_SIZE(rates); i++) + if (dummy_pcm_hardware.rates & (1 << i)) + snd_iprintf(buffer, " %d", rates[i]); +} + +#define get_dummy_int_ptr(ofs) \ + (unsigned int *)((char *)&dummy_pcm_hardware + (ofs)) +#define get_dummy_ll_ptr(ofs) \ + (unsigned long long *)((char *)&dummy_pcm_hardware + (ofs)) + +struct dummy_hw_field { + const char *name; + const char *format; + unsigned int offset; + unsigned int size; +}; +#define FIELD_ENTRY(item, fmt) { \ + .name = #item, \ + .format = fmt, \ + .offset = offsetof(struct snd_pcm_hardware, item), \ + .size = sizeof(dummy_pcm_hardware.item) } + +static struct dummy_hw_field fields[] = { + FIELD_ENTRY(formats, "%#llx"), + FIELD_ENTRY(rates, "%#x"), + FIELD_ENTRY(rate_min, "%d"), + FIELD_ENTRY(rate_max, "%d"), + FIELD_ENTRY(channels_min, "%d"), + FIELD_ENTRY(channels_max, "%d"), + FIELD_ENTRY(buffer_bytes_max, "%ld"), + FIELD_ENTRY(period_bytes_min, "%ld"), + FIELD_ENTRY(period_bytes_max, "%ld"), + FIELD_ENTRY(periods_min, "%d"), + FIELD_ENTRY(periods_max, "%d"), +}; + +static void dummy_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(fields); i++) { + snd_iprintf(buffer, "%s ", fields[i].name); + if (fields[i].size == sizeof(int)) + snd_iprintf(buffer, fields[i].format, + *get_dummy_int_ptr(fields[i].offset)); + else + snd_iprintf(buffer, fields[i].format, + *get_dummy_ll_ptr(fields[i].offset)); + if (!strcmp(fields[i].name, "formats")) + print_formats(buffer); + else if (!strcmp(fields[i].name, "rates")) + print_rates(buffer); + snd_iprintf(buffer, "\n"); + } +} + +static void dummy_proc_write(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + char line[64]; + + while (!snd_info_get_line(buffer, line, sizeof(line))) { + char item[20]; + const char *ptr; + unsigned long long val; + int i; + + ptr = snd_info_get_str(item, line, sizeof(item)); + for (i = 0; i < ARRAY_SIZE(fields); i++) { + if (!strcmp(item, fields[i].name)) + break; + } + if (i >= ARRAY_SIZE(fields)) + continue; + snd_info_get_str(item, ptr, sizeof(item)); + if (strict_strtoull(item, 0, &val)) + continue; + if (fields[i].size == sizeof(int)) + *get_dummy_int_ptr(fields[i].offset) = val; + else + *get_dummy_ll_ptr(fields[i].offset) = val; + } +} + +static void __devinit dummy_proc_init(struct snd_dummy *chip) +{ + struct snd_info_entry *entry; + + if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) { + snd_info_set_text_ops(entry, chip, dummy_proc_read); + entry->c.text.write = dummy_proc_write; + entry->mode |= S_IWUSR; + } +} +#else +#define dummy_proc_init(x) +#endif /* CONFIG_SND_DEBUG && CONFIG_PROC_FS */ + static int __devinit snd_dummy_probe(struct platform_device *devptr) { struct snd_card *card; @@ -845,6 +975,8 @@ static int __devinit snd_dummy_probe(struct platform_device *devptr) strcpy(card->shortname, "Dummy"); sprintf(card->longname, "Dummy %i", dev + 1); + dummy_proc_init(dummy); + snd_card_set_dev(card, &devptr->dev); err = snd_card_register(card); |