From 0519f7e5ab6d17f90257caffad85862187bffed6 Mon Sep 17 00:00:00 2001
From: Andrew Ryabinin <ryabinin.a.a@gmail.com>
Date: Sun, 12 May 2013 23:23:45 +0400
Subject: Add DAC's oversampling filter roll-off selection to sound settings.

Change-Id: I1258ba50dd9308f49d97965562f3a423c9bfb785
---
 firmware/export/audiohw.h          | 16 ++++++++++++++++
 firmware/export/audiohw_settings.h |  3 +++
 firmware/export/sound.h            |  4 ++++
 firmware/sound.c                   | 10 ++++++++++
 4 files changed, 33 insertions(+)

(limited to 'firmware')

diff --git a/firmware/export/audiohw.h b/firmware/export/audiohw.h
index d1579b5b93..1cabf6f782 100644
--- a/firmware/export/audiohw.h
+++ b/firmware/export/audiohw.h
@@ -40,6 +40,7 @@
 #define MONO_VOL_CAP          (1 << 10)
 #define LIN_GAIN_CAP          (1 << 11)
 #define MIC_GAIN_CAP          (1 << 12)
+#define FILTER_ROLL_OFF_CAP   (1 << 13)
 
 /* Used by every driver to export its min/max/default values for its audio
    settings. */
@@ -269,6 +270,11 @@ enum AUDIOHW_EQ_SETTINGS
 #define AUDIOHW_HAVE_MIC_GAIN
 #endif
 #endif /* HAVE_RECORDING */
+
+#if (AUDIOHW_CAPS & FILTER_ROLL_OFF_CAP)
+#define AUDIOHW_HAVE_FILTER_ROLL_OFF
+#endif
+
 #endif /* AUDIOHW_CAPS */
 
 #ifdef HAVE_SW_TONE_CONTROLS
@@ -454,6 +460,16 @@ void audiohw_set_eq_band_width(unsigned int band, int val);
 void audiohw_set_depth_3d(int val);
 #endif
 
+#ifdef AUDIOHW_HAVE_FILTER_ROLL_OFF
+/**
+ * Set DAC's oversampling filter roll-off.
+ * @param val 0 - sharp roll-off, 1 - slow roll-off.
+ * NOTE: AUDIOHW_CAPS need to contain
+ *          FILTER_ROLL_OFF_CAP
+ */
+void audiohw_set_filter_roll_off(int val);
+#endif
+
 
 void audiohw_set_frequency(int fsel);
 
diff --git a/firmware/export/audiohw_settings.h b/firmware/export/audiohw_settings.h
index f934c96302..675ec59a7b 100644
--- a/firmware/export/audiohw_settings.h
+++ b/firmware/export/audiohw_settings.h
@@ -110,6 +110,9 @@ AUDIOHW_SETTINGS(
 #if defined(AUDIOHW_HAVE_DEPTH_3D)
     AUDIOHW_SETTING_ENT(DEPTH_3D,           sound_set_depth_3d)
 #endif
+#if defined(AUDIOHW_HAVE_FILTER_ROLL_OFF)
+    AUDIOHW_SETTING_ENT(FILTER_ROLL_OFF,    sound_set_filter_roll_off)
+#endif
 /* Hardware EQ tone controls */
 #if defined(AUDIOHW_HAVE_EQ)
     AUDIOHW_SETTING_ENT(EQ_BAND1_GAIN,      sound_set_hw_eq_band1_gain)
diff --git a/firmware/export/sound.h b/firmware/export/sound.h
index fa76c67b1f..501c6a48a1 100644
--- a/firmware/export/sound.h
+++ b/firmware/export/sound.h
@@ -51,6 +51,10 @@ void sound_set_treble_cutoff(int value);
 void sound_set_depth_3d(int value);
 #endif
 
+#if defined(AUDIOHW_HAVE_FILTER_ROLL_OFF)
+void sound_set_filter_roll_off(int value);
+#endif
+
 #ifdef AUDIOHW_HAVE_EQ
 /*
  * band = SOUND_EQ_BANDb
diff --git a/firmware/sound.c b/firmware/sound.c
index 336fe90c25..a19cc15c41 100644
--- a/firmware/sound.c
+++ b/firmware/sound.c
@@ -314,6 +314,16 @@ void sound_set_depth_3d(int value)
 }
 #endif /* AUDIOHW_HAVE_DEPTH_3D */
 
+#if defined(AUDIOHW_HAVE_FILTER_ROLL_OFF)
+void sound_set_filter_roll_off(int value)
+{
+    if (!audio_is_initialized)
+        return;
+
+    audiohw_set_filter_roll_off(value);
+}
+#endif
+
 #if defined(AUDIOHW_HAVE_EQ)
 int sound_enum_hw_eq_band_setting(unsigned int band,
                                   unsigned int band_setting)
-- 
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