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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-07-29 11:42:25 +0100
committerJaroslav Kysela <perex@perex.cz>2008-07-29 21:32:15 +0200
commit58cd33c0f375578cfda25a52ed280caa888b6254 (patch)
treec670df251546d8affa258e0720d94d0a6aabcd4f /include/sound
parent8a33de9e51673dbdadb552d888a4544aefe0c31d (diff)
downloadop-kernel-dev-58cd33c0f375578cfda25a52ed280caa888b6254.zip
op-kernel-dev-58cd33c0f375578cfda25a52ed280caa888b6254.tar.gz
ALSA: ASoC: Allow codecs to override register display
Some codecs have unusual features in their register maps such as very large registers representing arrays of coefficients. Support these codecs in the register cache sysfs file by allowing them to provide a function register_display() overriding the default output for register contents. Also ensure that we don't overflow PAGE_SIZE while writing out the register dump. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 1890d87..2ce530e 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -410,6 +410,8 @@ struct snd_soc_codec {
void *control_data; /* codec control (i2c/3wire) data */
unsigned int (*read)(struct snd_soc_codec *, unsigned int);
int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
+ int (*display_register)(struct snd_soc_codec *, char *,
+ size_t, unsigned int);
hw_write_t hw_write;
hw_read_t hw_read;
void *reg_cache;
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