audiohw: avoid magic numbers for DAC power mode

Define proper symbolic constants for power mode. Also allow
targets to define the default power mode setting.

Change-Id: Ia07cf854dce47d0a6aa88e067471f1ff9fbc45fb

5 files changed, 12 insertions, 6 deletions

diff --git a/firmware/drivers/audio/ak4376.c b/firmware/drivers/audio/ak4376.c
index 8206bcf7e0..2e772ace84 100644
--- a/firmware/drivers/audio/ak4376.c
+++ b/firmware/drivers/audio/ak4376.c
@@ -242,11 +242,11 @@ void ak4376_set_freqmode(int fsel, int mult, int power_mode)
 
     /* Handle the DSMLP bit in the MODE_CTRL register */
     int mode_ctrl = 0x00;
-    if(power_mode || hw_freq_sampr[fsel] <= SAMPR_12)
+    if(power_mode == SOUND_LOW_POWER || hw_freq_sampr[fsel] <= SAMPR_12)
         mode_ctrl |= 0x40;
 
     /* Program the new settings */
     ak4376_write(AK4376_REG_CLOCK_MODE, clock_mode);
     ak4376_write(AK4376_REG_MODE_CTRL, mode_ctrl);
-    ak4376_write(AK4376_REG_PWR3, power_mode ? 0x11 : 0x01);
+    ak4376_write(AK4376_REG_PWR3, power_mode == SOUND_LOW_POWER ? 0x11 : 0x01);
 }
diff --git a/firmware/export/ak4376.h b/firmware/export/ak4376.h
index eab0bc24f3..0ae156bc37 100644
--- a/firmware/export/ak4376.h
+++ b/firmware/export/ak4376.h
@@ -144,8 +144,8 @@ extern void ak4376_set_filter_roll_off(int val);
  * and power-up / power-down sequences as a frequency switch, so both settings
  * are controlled by this function.
  *
- * high power mode -- use power_mode=0
- * low power mode  -- use power_mode=1
+ * high power mode -- use power_mode=SOUND_HIGH_POWER
+ * low power mode  -- use power_mode=SOUND_LOW_POWER
  */
 extern void ak4376_set_freqmode(int fsel, int mult, int power_mode);
 
diff --git a/firmware/export/audiohw.h b/firmware/export/audiohw.h
index a365b97828..3f8b48d750 100644
--- a/firmware/export/audiohw.h
+++ b/firmware/export/audiohw.h
@@ -605,6 +605,12 @@ void audiohw_set_filter_roll_off(int val);
 #endif
 
 #ifdef AUDIOHW_HAVE_POWER_MODE
+enum audiohw_power_mode
+{
+    SOUND_HIGH_POWER = 0,
+    SOUND_LOW_POWER,
+};
+
 /**
  * Set DAC's power saving mode.
  * @param enable 0 - highest performance, 1 - battery saving
diff --git a/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c b/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c
index 8528b803f7..f7dced8f54 100644
--- a/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c
+++ b/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c
@@ -28,7 +28,7 @@
 #include "logf.h"
 
 static int cur_fsel = HW_FREQ_48;
-static int cur_power_mode = 0;
+static int cur_power_mode = SOUND_HIGH_POWER;
 
 static void set_ak_freqmode(void)
 {
diff --git a/firmware/target/mips/ingenic_x1000/shanlingq1/audiohw-shanlingq1.c b/firmware/target/mips/ingenic_x1000/shanlingq1/audiohw-shanlingq1.c
index 7314f20412..3b49262f20 100644
--- a/firmware/target/mips/ingenic_x1000/shanlingq1/audiohw-shanlingq1.c
+++ b/firmware/target/mips/ingenic_x1000/shanlingq1/audiohw-shanlingq1.c
@@ -154,7 +154,7 @@ void audiohw_set_filter_roll_off(int value)
 void audiohw_set_power_mode(int mode)
 {
     enum es9218_amp_mode new_amp_mode;
-    if(mode == 0)
+    if(mode == SOUND_HIGH_POWER)
         new_amp_mode = ES9218_AMP_MODE_2VRMS;
     else
         new_amp_mode = ES9218_AMP_MODE_1VRMS;