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authorTakashi Iwai <tiwai@suse.de>2006-02-09 11:45:20 +0100
committerJaroslav Kysela <perex@suse.cz>2006-03-22 10:28:34 +0100
commit50dabc2d1139ba01362418874152aeeb591a4544 (patch)
tree8ade72febf95b39a69579db2ee7e7e066506990c /sound/pci
parentb2b8229dde970b95e407d90a140e8a8753e1f0f6 (diff)
[ALSA] ac97 - Add support of static resolution tables
Modules: AC97 Codec Added the support of static resolution table support for codecs that the driver cannot probe the volume resolution properly. The table pointer should be set in each codec patch. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/ac97/ac97_codec.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 6108cdc5efb..124c1bc4cb9 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -1030,6 +1030,18 @@ static void check_volume_resolution(struct snd_ac97 *ac97, int reg, unsigned cha
unsigned char max[3] = { 63, 31, 15 };
int i;
+ /* first look up the static resolution table */
+ if (ac97->res_table) {
+ const struct snd_ac97_res_table *tbl;
+ for (tbl = ac97->res_table; tbl->reg; tbl++) {
+ if (tbl->reg == reg) {
+ *lo_max = tbl->bits & 0xff;
+ *hi_max = (tbl->bits >> 8) & 0xff;
+ return;
+ }
+ }
+ }
+
*lo_max = *hi_max = 0;
for (i = 0 ; i < ARRAY_SIZE(cbit); i++) {
unsigned short val;