ALSA: dummy driver - add model parameter
This is a cleanup for the dummy driver. The model kernel module parameter is introduced to select the soundcard emulation. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela
parent
6123637faf
commit
d5e1ca05f7
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@ -45,109 +45,23 @@ MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
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#define MAX_PCM_SUBSTREAMS 128
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#define MAX_MIDI_DEVICES 2
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#if 0 /* emu10k1 emulation */
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#define MAX_BUFFER_SIZE (128 * 1024)
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static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime)
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{
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int err;
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err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
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if (err < 0)
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return err;
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err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX);
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if (err < 0)
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return err;
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return 0;
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}
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#define add_playback_constraints emu10k1_playback_constraints
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#endif
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#if 0 /* RME9652 emulation */
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#define MAX_BUFFER_SIZE (26 * 64 * 1024)
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE
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#define USE_CHANNELS_MIN 26
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#define USE_CHANNELS_MAX 26
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#define USE_PERIODS_MIN 2
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#define USE_PERIODS_MAX 2
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#endif
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#if 0 /* ICE1712 emulation */
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#define MAX_BUFFER_SIZE (256 * 1024)
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S32_LE
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#define USE_CHANNELS_MIN 10
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#define USE_CHANNELS_MAX 10
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#define USE_PERIODS_MIN 1
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#define USE_PERIODS_MAX 1024
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#endif
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#if 0 /* UDA1341 emulation */
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#define MAX_BUFFER_SIZE (16380)
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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#define USE_CHANNELS_MIN 2
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#define USE_CHANNELS_MAX 2
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#define USE_PERIODS_MIN 2
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#define USE_PERIODS_MAX 255
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#endif
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#if 0 /* simple AC97 bridge (intel8x0) with 48kHz AC97 only codec */
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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#define USE_CHANNELS_MIN 2
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#define USE_CHANNELS_MAX 2
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#define USE_RATE SNDRV_PCM_RATE_48000
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#define USE_RATE_MIN 48000
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#define USE_RATE_MAX 48000
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#endif
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#if 0 /* CA0106 */
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#define USE_FORMATS SNDRV_PCM_FMTBIT_S16_LE
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#define USE_CHANNELS_MIN 2
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#define USE_CHANNELS_MAX 2
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#define USE_RATE (SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000)
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#define USE_RATE_MIN 48000
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#define USE_RATE_MAX 192000
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#define MAX_BUFFER_SIZE ((65536-64)*8)
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#define MAX_PERIOD_SIZE (65536-64)
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#define USE_PERIODS_MIN 2
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#define USE_PERIODS_MAX 8
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#endif
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/* defaults */
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#ifndef MAX_BUFFER_SIZE
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#define MAX_BUFFER_SIZE (64*1024)
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#endif
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#ifndef MAX_PERIOD_SIZE
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#define MIN_PERIOD_SIZE 64
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#define MAX_PERIOD_SIZE MAX_BUFFER_SIZE
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#endif
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#ifndef USE_FORMATS
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#define USE_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
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#endif
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#ifndef USE_RATE
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#define USE_RATE SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000
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#define USE_RATE_MIN 5500
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#define USE_RATE_MAX 48000
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#endif
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#ifndef USE_CHANNELS_MIN
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#define USE_CHANNELS_MIN 1
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#endif
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#ifndef USE_CHANNELS_MAX
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#define USE_CHANNELS_MAX 2
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#endif
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#ifndef USE_PERIODS_MIN
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#define USE_PERIODS_MIN 1
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#endif
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#ifndef USE_PERIODS_MAX
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#define USE_PERIODS_MAX 1024
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#endif
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#ifndef add_playback_constraints
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#define add_playback_constraints(x) 0
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#endif
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#ifndef add_capture_constraints
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#define add_capture_constraints(x) 0
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#endif
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
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static char *model[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = NULL};
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static int pcm_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
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static int pcm_substreams[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8};
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//static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
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@ -162,6 +76,8 @@ module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
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module_param_array(model, charp, NULL, 0444);
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MODULE_PARM_DESC(model, "Soundcard model.");
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module_param_array(pcm_devs, int, NULL, 0444);
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MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
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module_param_array(pcm_substreams, int, NULL, 0444);
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@ -193,15 +109,120 @@ struct dummy_timer_ops {
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snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *);
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};
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struct dummy_model {
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const char *name;
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int (*playback_constraints)(struct snd_pcm_runtime *runtime);
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int (*capture_constraints)(struct snd_pcm_runtime *runtime);
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u64 formats;
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size_t buffer_bytes_max;
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size_t period_bytes_min;
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size_t period_bytes_max;
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unsigned int periods_min;
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unsigned int periods_max;
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unsigned int rates;
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unsigned int rate_min;
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unsigned int rate_max;
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unsigned int channels_min;
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unsigned int channels_max;
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};
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struct snd_dummy {
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struct snd_card *card;
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struct dummy_model *model;
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struct snd_pcm *pcm;
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struct snd_pcm_hardware pcm_hw;
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spinlock_t mixer_lock;
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int mixer_volume[MIXER_ADDR_LAST+1][2];
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int capture_source[MIXER_ADDR_LAST+1][2];
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const struct dummy_timer_ops *timer_ops;
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};
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/*
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* card models
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*/
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static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime)
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{
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int err;
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err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
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if (err < 0)
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return err;
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err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX);
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if (err < 0)
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return err;
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return 0;
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}
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struct dummy_model model_emu10k1 = {
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.name = "emu10k1",
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.playback_constraints = emu10k1_playback_constraints,
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.buffer_bytes_max = 128 * 1024,
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};
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struct dummy_model model_rme9652 = {
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.name = "rme9652",
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.buffer_bytes_max = 26 * 64 * 1024,
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.formats = SNDRV_PCM_FMTBIT_S32_LE,
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.channels_min = 26,
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.channels_max = 26,
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.periods_min = 2,
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.periods_max = 2,
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};
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struct dummy_model model_ice1712 = {
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.name = "ice1712",
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.buffer_bytes_max = 256 * 1024,
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.formats = SNDRV_PCM_FMTBIT_S32_LE,
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.channels_min = 10,
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.channels_max = 10,
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.periods_min = 1,
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.periods_max = 1024,
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};
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struct dummy_model model_uda1341 = {
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.name = "uda1341",
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.buffer_bytes_max = 16380,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.channels_min = 2,
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.channels_max = 2,
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.periods_min = 2,
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.periods_max = 255,
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};
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struct dummy_model model_ac97 = {
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.name = "ac97",
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.channels_min = 2,
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.channels_max = 2,
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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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};
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struct dummy_model model_ca0106 = {
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.name = "ca0106",
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.buffer_bytes_max = ((65536-64)*8),
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.period_bytes_max = (65536-64),
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.periods_min = 2,
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.periods_max = 8,
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_192000,
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.rate_min = 48000,
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.rate_max = 192000,
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};
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struct dummy_model *dummy_models[] = {
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&model_emu10k1,
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&model_rme9652,
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&model_ice1712,
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&model_uda1341,
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&model_ac97,
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&model_ca0106,
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NULL
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};
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/*
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* system timer interface
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*/
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@ -509,7 +530,7 @@ static struct snd_pcm_hardware dummy_pcm_hardware = {
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.channels_min = USE_CHANNELS_MIN,
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.channels_max = USE_CHANNELS_MAX,
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.buffer_bytes_max = MAX_BUFFER_SIZE,
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.period_bytes_min = 64,
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.period_bytes_min = MIN_PERIOD_SIZE,
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.period_bytes_max = MAX_PERIOD_SIZE,
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.periods_min = USE_PERIODS_MIN,
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.periods_max = USE_PERIODS_MAX,
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@ -538,6 +559,7 @@ static int dummy_pcm_hw_free(struct snd_pcm_substream *substream)
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static int dummy_pcm_open(struct snd_pcm_substream *substream)
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{
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struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
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struct dummy_model *model = dummy->model;
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struct snd_pcm_runtime *runtime = substream->runtime;
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int err;
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@ -551,7 +573,7 @@ static int dummy_pcm_open(struct snd_pcm_substream *substream)
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if (err < 0)
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return err;
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runtime->hw = dummy_pcm_hardware;
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runtime->hw = dummy->pcm_hw;
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if (substream->pcm->device & 1) {
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runtime->hw.info &= ~SNDRV_PCM_INFO_INTERLEAVED;
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runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
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@ -560,10 +582,16 @@ static int dummy_pcm_open(struct snd_pcm_substream *substream)
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runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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err = add_playback_constraints(substream->runtime);
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else
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err = add_capture_constraints(substream->runtime);
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if (model == NULL)
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return 0;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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if (model->playback_constraints)
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err = model->playback_constraints(substream->runtime);
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} else {
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if (model->capture_constraints)
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err = model->capture_constraints(substream->runtime);
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}
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if (err < 0) {
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dummy->timer_ops->free(substream);
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return err;
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@ -823,17 +851,19 @@ static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
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/*
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* proc interface
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*/
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static void print_formats(struct snd_info_buffer *buffer)
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static void print_formats(struct snd_dummy *dummy,
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struct snd_info_buffer *buffer)
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{
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int i;
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for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) {
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if (dummy_pcm_hardware.formats & (1ULL << i))
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if (dummy->pcm_hw.formats & (1ULL << i))
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snd_iprintf(buffer, " %s", snd_pcm_format_name(i));
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}
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}
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static void print_rates(struct snd_info_buffer *buffer)
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static void print_rates(struct snd_dummy *dummy,
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struct snd_info_buffer *buffer)
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{
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static int rates[] = {
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5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
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@ -841,19 +871,19 @@ static void print_rates(struct snd_info_buffer *buffer)
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};
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int i;
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if (dummy_pcm_hardware.rates & SNDRV_PCM_RATE_CONTINUOUS)
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if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS)
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snd_iprintf(buffer, " continuous");
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if (dummy_pcm_hardware.rates & SNDRV_PCM_RATE_KNOT)
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if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT)
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snd_iprintf(buffer, " knot");
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for (i = 0; i < ARRAY_SIZE(rates); i++)
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if (dummy_pcm_hardware.rates & (1 << i))
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if (dummy->pcm_hw.rates & (1 << i))
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snd_iprintf(buffer, " %d", rates[i]);
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}
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#define get_dummy_int_ptr(ofs) \
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(unsigned int *)((char *)&dummy_pcm_hardware + (ofs))
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#define get_dummy_ll_ptr(ofs) \
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(unsigned long long *)((char *)&dummy_pcm_hardware + (ofs))
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#define get_dummy_int_ptr(dummy, ofs) \
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(unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs))
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#define get_dummy_ll_ptr(dummy, ofs) \
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(unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs))
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struct dummy_hw_field {
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const char *name;
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@ -884,20 +914,21 @@ static struct dummy_hw_field fields[] = {
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static void dummy_proc_read(struct snd_info_entry *entry,
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struct snd_info_buffer *buffer)
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{
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struct snd_dummy *dummy = entry->private_data;
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int i;
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for (i = 0; i < ARRAY_SIZE(fields); i++) {
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snd_iprintf(buffer, "%s ", fields[i].name);
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if (fields[i].size == sizeof(int))
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snd_iprintf(buffer, fields[i].format,
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*get_dummy_int_ptr(fields[i].offset));
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*get_dummy_int_ptr(dummy, fields[i].offset));
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else
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snd_iprintf(buffer, fields[i].format,
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*get_dummy_ll_ptr(fields[i].offset));
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*get_dummy_ll_ptr(dummy, fields[i].offset));
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if (!strcmp(fields[i].name, "formats"))
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print_formats(buffer);
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print_formats(dummy, buffer);
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else if (!strcmp(fields[i].name, "rates"))
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print_rates(buffer);
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print_rates(dummy, buffer);
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snd_iprintf(buffer, "\n");
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}
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}
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@ -905,6 +936,7 @@ static void dummy_proc_read(struct snd_info_entry *entry,
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static void dummy_proc_write(struct snd_info_entry *entry,
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struct snd_info_buffer *buffer)
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{
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struct snd_dummy *dummy = entry->private_data;
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char line[64];
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while (!snd_info_get_line(buffer, line, sizeof(line))) {
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@ -924,9 +956,9 @@ static void dummy_proc_write(struct snd_info_entry *entry,
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if (strict_strtoull(item, 0, &val))
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continue;
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if (fields[i].size == sizeof(int))
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*get_dummy_int_ptr(fields[i].offset) = val;
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*get_dummy_int_ptr(dummy, fields[i].offset) = val;
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else
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*get_dummy_ll_ptr(fields[i].offset) = val;
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*get_dummy_ll_ptr(dummy, fields[i].offset) = val;
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}
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}
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@ -938,6 +970,7 @@ static void __devinit dummy_proc_init(struct snd_dummy *chip)
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snd_info_set_text_ops(entry, chip, dummy_proc_read);
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entry->c.text.write = dummy_proc_write;
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entry->mode |= S_IWUSR;
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entry->private_data = chip;
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}
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}
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#else
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@ -948,6 +981,7 @@ static int __devinit snd_dummy_probe(struct platform_device *devptr)
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{
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struct snd_card *card;
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struct snd_dummy *dummy;
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struct dummy_model *m = NULL, **mdl;
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int idx, err;
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int dev = devptr->id;
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@ -957,6 +991,15 @@ static int __devinit snd_dummy_probe(struct platform_device *devptr)
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return err;
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dummy = card->private_data;
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dummy->card = card;
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for (mdl = dummy_models; *mdl && model[dev]; mdl++) {
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if (strcmp(model[dev], (*mdl)->name) == 0) {
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printk(KERN_INFO
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"snd-dummy: Using model '%s' for card %i\n",
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(*mdl)->name, card->number);
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m = dummy->model = *mdl;
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break;
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}
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}
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for (idx = 0; idx < MAX_PCM_DEVICES && idx < pcm_devs[dev]; idx++) {
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if (pcm_substreams[dev] < 1)
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pcm_substreams[dev] = 1;
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@ -966,6 +1009,33 @@ static int __devinit snd_dummy_probe(struct platform_device *devptr)
|
|||
if (err < 0)
|
||||
goto __nodev;
|
||||
}
|
||||
|
||||
dummy->pcm_hw = dummy_pcm_hardware;
|
||||
if (m) {
|
||||
if (m->formats)
|
||||
dummy->pcm_hw.formats = m->formats;
|
||||
if (m->buffer_bytes_max)
|
||||
dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max;
|
||||
if (m->period_bytes_min)
|
||||
dummy->pcm_hw.period_bytes_min = m->period_bytes_min;
|
||||
if (m->period_bytes_max)
|
||||
dummy->pcm_hw.period_bytes_max = m->period_bytes_max;
|
||||
if (m->periods_min)
|
||||
dummy->pcm_hw.periods_min = m->periods_min;
|
||||
if (m->periods_max)
|
||||
dummy->pcm_hw.periods_max = m->periods_max;
|
||||
if (m->rates)
|
||||
dummy->pcm_hw.rates = m->rates;
|
||||
if (m->rate_min)
|
||||
dummy->pcm_hw.rate_min = m->rate_min;
|
||||
if (m->rate_max)
|
||||
dummy->pcm_hw.rate_max = m->rate_max;
|
||||
if (m->channels_min)
|
||||
dummy->pcm_hw.channels_min = m->channels_min;
|
||||
if (m->channels_max)
|
||||
dummy->pcm_hw.channels_max = m->channels_max;
|
||||
}
|
||||
|
||||
err = snd_card_dummy_new_mixer(dummy);
|
||||
if (err < 0)
|
||||
goto __nodev;
|
||||
|
|
|
|||
Reference in New Issue