CRAS: Add custom volume curve for stumpy/lumpy.

Add a volume curve for Stumpy and Lumpy that provides a wider range of
useful volumes.  This provides higher volume at lower slider levels.

BUG=chromium-os:25412
TEST=Boot stumpy/lumpy and watch "alsamixer -c0" volume slider relative
to the system volume.

Change-Id: Iaf1d41103ab6aad38c3dae256253c9a37356563f

3 files changed, 123 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 7da5c121..56e6e660 100644
--- a/Makefile
+++ b/Makefile
@@ -52,6 +52,20 @@ install:	$(DESTDIR)/etc/modprobe.d/alsa-$(BOARD).conf
 
 endif
 
+optional_cras_conf := $(wildcard $(ADHD_DIR)/cras-config/$(BOARD)/*)
+
+ifneq ($(strip $(optional_cras_conf)),)
+
+.PHONY: cras-config-files
+cras-config-files:
+	$(ECHO) "Installing cras config files"
+	$(INSTALL) --mode 755 -d $(DESTDIR)etc/cras/
+	$(INSTALL) --mode 644 -D "$(optional_cras_conf)" $(DESTDIR)etc/cras/
+
+install:	cras-config-files
+
+endif
+
 install:	$(DESTDIR)/etc/init/cras.conf				\
 		$(DESTDIR)/etc/asound.state				\
 		$(DESTDIR)/usr/bin/gavd					\
diff --git a/cras-config/lumpy/HDA Intel PCH b/cras-config/lumpy/HDA Intel PCH
new file mode 100644
index 00000000..cc173b29
--- /dev/null
+++ b/cras-config/lumpy/HDA Intel PCH
@@ -0,0 +1,108 @@
+[Default]
+  volume_curve = explicit
+  db_at_100 = 0
+  db_at_99 = -50
+  db_at_98 = -50
+  db_at_97 = -100
+  db_at_96 = -100
+  db_at_95 = -150
+  db_at_94 = -150
+  db_at_93 = -200
+  db_at_92 = -200
+  db_at_91 = -250
+  db_at_90 = -250
+  db_at_89 = -250
+  db_at_88 = -300
+  db_at_87 = -300
+  db_at_86 = -350
+  db_at_85 = -350
+  db_at_84 = -400
+  db_at_83 = -400
+  db_at_82 = -450
+  db_at_81 = -450
+  db_at_80 = -500
+  db_at_79 = -500
+  db_at_78 = -550
+  db_at_77 = -550
+  db_at_76 = -600
+  db_at_75 = -600
+  db_at_74 = -650
+  db_at_73 = -650
+  db_at_72 = -700
+  db_at_71 = -700
+  db_at_70 = -750
+  db_at_69 = -750
+  db_at_68 = -800
+  db_at_67 = -800
+  db_at_66 = -850
+  db_at_65 = -850
+  db_at_64 = -900
+  db_at_63 = -900
+  db_at_62 = -950
+  db_at_61 = -950
+  db_at_60 = -1000
+  db_at_59 = -1000
+  db_at_58 = -1050
+  db_at_57 = -1050
+  db_at_56 = -1100
+  db_at_55 = -1100
+  db_at_54 = -1150
+  db_at_53 = -1150
+  db_at_52 = -1200
+  db_at_51 = -1200
+  db_at_50 = -1250
+  db_at_49 = -1250
+  db_at_48 = -1300
+  db_at_47 = -1300
+  db_at_46 = -1350
+  db_at_45 = -1350
+  db_at_44 = -1400
+  db_at_43 = -1400
+  db_at_42 = -1450
+  db_at_41 = -1450
+  db_at_40 = -1500
+  db_at_39 = -1550
+  db_at_38 = -1600
+  db_at_37 = -1650
+  db_at_36 = -1700
+  db_at_35 = -1750
+  db_at_34 = -1800
+  db_at_33 = -1850
+  db_at_32 = -1900
+  db_at_31 = -1950
+  db_at_30 = -2000
+  db_at_29 = -2000
+  db_at_28 = -2100
+  db_at_27 = -2200
+  db_at_26 = -2300
+  db_at_25 = -2300
+  db_at_24 = -2400
+  db_at_23 = -2500
+  db_at_22 = -2600
+  db_at_21 = -2700
+  db_at_20 = -2800
+  db_at_19 = -2900
+  db_at_18 = -3000
+  db_at_17 = -3100
+  db_at_16 = -3200
+  db_at_15 = -3300
+  db_at_14 = -3400
+  db_at_13 = -3500
+  db_at_12 = -3600
+  db_at_11 = -3700
+  db_at_10 = -3800
+  db_at_9 = -3900
+  db_at_8 = -4000
+  db_at_7 = -4100
+  db_at_6 = -4200
+  db_at_5 = -4300
+  db_at_4 = -4400
+  db_at_3 = -4450
+  db_at_2 = -4700
+  db_at_1 = -4950
+  db_at_0 = -5200
+[Front Headphone Jack]
+  ; Headphones allowed full range, 0.5dB per step, 50dB total range.
+  volume_curve = simple_step
+  volume_step = 50
+  max_volume = 0
diff --git a/cras-config/stumpy b/cras-config/stumpy
new file mode 120000
index 00000000..2886fede
--- /dev/null
+++ b/cras-config/stumpy
@@ -0,0 +1 @@
+lumpy/
\ No newline at end of file