commit a7a4ac86b4754f44eb06221f3087debb4775d588
author Philipp Zabel <philipp.zabel@gmail.com> Thu Jan 10 14:37:42 2008 +0100
committer Jaroslav Kysela <perex@perex.cz> Thu Jan 31 17:29:50 2008 +0100
tree 63240035ca77fca21c4bb3b0db7566f53501053a
parent 0b4d221b8d56deefca4984d01b3a010107ae1f72

[ALSA] ASoC TLV support

Add TLV support to ASoC.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/soc/soc-dapm.c

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 16ebb60..7eb6c5c 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1018,8 +1018,9 @@
 	int reg = kcontrol->private_value & 0xff;
 	int shift = (kcontrol->private_value >> 8) & 0x0f;
 	int rshift = (kcontrol->private_value >> 12) & 0x0f;
-	int mask = (kcontrol->private_value >> 16) & 0xff;
+	int max = (kcontrol->private_value >> 16) & 0xff;
 	int invert = (kcontrol->private_value >> 24) & 0x01;
+	int mask = (1 << fls(max)) - 1;
 
 	/* return the saved value if we are powered down */
 	if (widget->id == snd_soc_dapm_pga && !widget->power) {
@@ -1034,10 +1035,10 @@
 			(snd_soc_read(widget->codec, reg) >> rshift) & mask;
 	if (invert) {
 		ucontrol->value.integer.value[0] =
-			mask - ucontrol->value.integer.value[0];
+			max - ucontrol->value.integer.value[0];
 		if (shift != rshift)
 			ucontrol->value.integer.value[1] =
-				mask - ucontrol->value.integer.value[1];
+				max - ucontrol->value.integer.value[1];
 	}
 
 	return 0;
@@ -1060,7 +1061,8 @@
 	int reg = kcontrol->private_value & 0xff;
 	int shift = (kcontrol->private_value >> 8) & 0x0f;
 	int rshift = (kcontrol->private_value >> 12) & 0x0f;
-	int mask = (kcontrol->private_value >> 16) & 0xff;
+	int max = (kcontrol->private_value >> 16) & 0xff;
+	int mask = (1 << fls(max)) - 1;
 	int invert = (kcontrol->private_value >> 24) & 0x01;
 	unsigned short val, val2, val_mask;
 	int ret;
@@ -1068,13 +1070,13 @@
 	val = (ucontrol->value.integer.value[0] & mask);
 
 	if (invert)
-		val = mask - val;
+		val = max - val;
 	val_mask = mask << shift;
 	val = val << shift;
 	if (shift != rshift) {
 		val2 = (ucontrol->value.integer.value[1] & mask);
 		if (invert)
-			val2 = mask - val2;
+			val2 = max - val2;
 		val_mask |= mask << rshift;
 		val |= val2 << rshift;
 	}