Hi, On Jun 6 2017 05:16, Daniel Drake wrote:
diff --git a/sound/soc/codecs/es8316.c b/sound/soc/codecs/es8316.c
new file mode 100644
index 000000000000..ced60a56b4cb
--- /dev/null
+++ b/sound/soc/codecs/es8316.c
...
+/*
+ * ES8316 controls
+ */
+static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, -9600, 50, 1);
+static const DECLARE_TLV_DB_SCALE(adc_vol_tlv, -9600, 50, 1);
+static const DECLARE_TLV_DB_SCALE(alc_max_gain_tlv, -650, 150, 0);
+static const DECLARE_TLV_DB_SCALE(alc_min_gain_tlv, -1200, 150, 0);
+static const DECLARE_TLV_DB_SCALE(alc_target_tlv, -1650, 150, 0);
+static const DECLARE_TLV_DB_SCALE(hpmixer_gain_tlv, -1200, 150, 0);
+
+static unsigned int adc_pga_gain_tlv[] = {
+ TLV_DB_RANGE_HEAD(12),
+ 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
+ 1, 1, TLV_DB_SCALE_ITEM(300, 0, 0),
+ 2, 2, TLV_DB_SCALE_ITEM(600, 0, 0),
+ 3, 3, TLV_DB_SCALE_ITEM(900, 0, 0),
+ 4, 4, TLV_DB_SCALE_ITEM(1200, 0, 0),
+ 5, 5, TLV_DB_SCALE_ITEM(1500, 0, 0),
+ 6, 6, TLV_DB_SCALE_ITEM(1800, 0, 0),
+ 7, 7, TLV_DB_SCALE_ITEM(2100, 0, 0),
+ 8, 8, TLV_DB_SCALE_ITEM(2400, 0, 0),
+};
+static unsigned int hpout_vol_tlv[] = {
+ TLV_DB_RANGE_HEAD(1),
+ 0, 3, TLV_DB_SCALE_ITEM(-4800, 1200, 0),
+};
To me, the array of 'adc_pga_gain_tlv' includes invalid members as 'SNDRV_CTL_TLVT_DB_RANGE'. In your code, the array represents below table:
Linear range: dB range: coeff: mute 0 <-> 0: 0 <-> 0: 0: 0 1 <-> 1: 300 <-> 300: 0: 0 2 <-> 2: 600 <-> 600: 0: 0 3 <-> 3: 900 <-> 900: 0: 0 4 <-> 4: 1200 <-> 1200: 0: 0 5 <-> 5: 1500 <-> 1500: 0: 0 6 <-> 6: 1800 <-> 1800: 0: 0 7 <-> 7: 2100 <-> 2100: 0: 0 8 <-> 8: 2400 <-> 2400: 0: 0Can I ask you to ensure that your hardware has jumps for current dB value against given linear value and investigate the reason that maximum value in this table has too large value (2,400) as dB representation.
If you don't have real hardware or don't find the detail in datasheet of ES8316, please inform it. Then, I leave the decision of merging to Mark Brown, a maintainer of ALSA SoC part.
Additionally, these macros are obsoleted. See memo in header[1]. It's better to macros in UAPI header[2] for newer codes. Furthermore, the usage of 'TLV_DB_RANGE_HEAD' is obsoleted with 'DECLARE_TLV_DB_RANGE'. It's better to use 'SNDRV_CTL_TLVD_DECLARE_DB_RANGE', instead. TLV data is exposed to userspace applications as is. It's better to use the same name of macro in UAPI header so that application developers can easily reach your codes.
[1] include/sound/tlv.h https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/include/sound/tlv.h#n52 [2] include/uapi/sound/tlv.h https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/tree/include/uapi/sound/tlv.h Regards Takashi Sakamoto _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
