aboutsummaryrefslogtreecommitdiffstats
path: root/include/sound
diff options
context:
space:
mode:
authorDimitris Papastamos <dp@opensource.wolfsonmicro.com>2011-01-13 07:20:36 -0500
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-01-13 09:17:32 -0500
commit066d16c3e8194677a9aaeb06a45e4014387d16f1 (patch)
treefbdd51ab4478d56fdba8d3c30a381c248a5a3718 /include/sound
parent3e8e2cc45c9d6b5c1265838a8cff701815321dbc (diff)
ASoC: soc-cache: Add support for default readable()/volatile() functions
For common scenarios, device drivers can provide a table of all the registers that are at least either readable/writable/volatile. The idea is that if a register lookup fails, all of its read/write/vol members will be zero and will be treated as default. This also reduces the size of the register access array. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index d609232da82a..b8acf99ac89d 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -276,6 +276,10 @@ int snd_soc_cache_write(struct snd_soc_codec *codec,
276 unsigned int reg, unsigned int value); 276 unsigned int reg, unsigned int value);
277int snd_soc_cache_read(struct snd_soc_codec *codec, 277int snd_soc_cache_read(struct snd_soc_codec *codec,
278 unsigned int reg, unsigned int *value); 278 unsigned int reg, unsigned int *value);
279int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
280 unsigned int reg);
281int snd_soc_default_readable_register(struct snd_soc_codec *codec,
282 unsigned int reg);
279 283
280/* Utility functions to get clock rates from various things */ 284/* Utility functions to get clock rates from various things */
281int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots); 285int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
@@ -367,6 +371,22 @@ int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
367 struct snd_ctl_elem_value *ucontrol); 371 struct snd_ctl_elem_value *ucontrol);
368 372
369/** 373/**
374 * struct snd_soc_reg_access - Describes whether a given register is
375 * readable, writable or volatile.
376 *
377 * @reg: the register number
378 * @read: whether this register is readable
379 * @write: whether this register is writable
380 * @vol: whether this register is volatile
381 */
382struct snd_soc_reg_access {
383 u16 reg;
384 u16 read;
385 u16 write;
386 u16 vol;
387};
388
389/**
370 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection 390 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
371 * 391 *
372 * @pin: name of the pin to update 392 * @pin: name of the pin to update
@@ -515,6 +535,8 @@ struct snd_soc_codec_driver {
515 short reg_cache_step; 535 short reg_cache_step;
516 short reg_word_size; 536 short reg_word_size;
517 const void *reg_cache_default; 537 const void *reg_cache_default;
538 short reg_access_size;
539 const struct snd_soc_reg_access *reg_access_default;
518 enum snd_soc_compress_type compress_type; 540 enum snd_soc_compress_type compress_type;
519 541
520 /* codec bias level */ 542 /* codec bias level */