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authorDana Conrad <dconrad@fastmail.com>2021-08-01 21:58:33 -0500
committerAidan MacDonald <amachronic@protonmail.com>2021-08-07 14:21:47 +0000
commit56b0dde5451ddedfd85c82391536e310cd05e1a8 (patch)
tree19d988f8cad0976abd086ee306ecbc840a1d477d /firmware/target
parent16b009825608164b17dabd877c78123a667b4981 (diff)
downloadrockbox-56b0dde5451ddedfd85c82391536e310cd05e1a8.tar.gz
rockbox-56b0dde5451ddedfd85c82391536e310cd05e1a8.zip
Higher bitdepth software volume scaling
Operates between 0 and -74 dB (mute) without issue Change-Id: I497e002bd8db43833a09ebbc29212fbb6cc8ebfd
Diffstat (limited to 'firmware/target')
-rw-r--r--firmware/target/mips/ingenic_x1000/pcm-x1000.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/firmware/target/mips/ingenic_x1000/pcm-x1000.c b/firmware/target/mips/ingenic_x1000/pcm-x1000.c
index a3da3411f2..ce2fbb17a9 100644
--- a/firmware/target/mips/ingenic_x1000/pcm-x1000.c
+++ b/firmware/target/mips/ingenic_x1000/pcm-x1000.c
@@ -66,10 +66,17 @@ void pcm_play_dma_init(void)
/* Let the target initialize its hardware and setup the AIC */
audiohw_init();
+#if (PCM_NATIVE_BITDEPTH > 16)
+ /* Program audio format (stereo, 24 bit samples) */
+ jz_writef(AIC_CCR, PACK16(0), CHANNEL_V(STEREO),
+ OSS_V(24BIT), ISS_V(24BIT), M2S(0));
+ jz_writef(AIC_I2SCR, SWLH(0));
+#else
/* Program audio format (stereo, packed 16 bit samples) */
jz_writef(AIC_CCR, PACK16(1), CHANNEL_V(STEREO),
OSS_V(16BIT), ISS_V(16BIT), M2S(0));
jz_writef(AIC_I2SCR, SWLH(0));
+#endif
/* Set DMA settings */
jz_writef(AIC_CFG, TFTH(16), RFTH(16));