diff options
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/rme9652/hdsp.c | 85 |
1 files changed, 79 insertions, 6 deletions
diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index 6540037a11e..4b20f848dba 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -275,6 +275,11 @@ MODULE_SUPPORTED_DEVICE("{{RME Hammerfall-DSP}," #define HDSP_Frequency128KHz (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency0) #define HDSP_Frequency176_4KHz (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency1) #define HDSP_Frequency192KHz (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency1|HDSP_Frequency0) +/* RME says n = 104857600000000, but in the windows MADI driver, I see: + return 104857600000000 / rate; // 100 MHz + return 110100480000000 / rate; // 105 MHz +*/ +#define DDS_NUMERATOR 104857600000000ULL; /* = 2^20 * 10^8 */ #define hdsp_encode_latency(x) (((x)<<1) & HDSP_LatencyMask) #define hdsp_decode_latency(x) (((x) & HDSP_LatencyMask)>>1) @@ -1001,11 +1006,7 @@ static void hdsp_set_dds_value(struct hdsp *hdsp, int rate) else if (rate >= 56000) rate /= 2; - /* RME says n = 104857600000000, but in the windows MADI driver, I see: -// return 104857600000000 / rate; // 100 MHz - return 110100480000000 / rate; // 105 MHz - */ - n = 104857600000000ULL; /* = 2^20 * 10^8 */ + n = DDS_NUMERATOR; div64_32(&n, rate, &r); /* n should be less than 2^32 for being written to FREQ register */ snd_assert((n >> 32) == 0); @@ -3085,11 +3086,83 @@ static int snd_hdsp_get_adat_sync_check(struct snd_kcontrol *kcontrol, struct sn return 0; } +#define HDSP_DDS_OFFSET(xname, xindex) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .index = xindex, \ + .info = snd_hdsp_info_dds_offset, \ + .get = snd_hdsp_get_dds_offset, \ + .put = snd_hdsp_put_dds_offset \ +} + +static int hdsp_dds_offset(struct hdsp *hdsp) +{ + u64 n; + u32 r; + unsigned int dds_value = hdsp->dds_value; + int system_sample_rate = hdsp->system_sample_rate; + + n = DDS_NUMERATOR; + /* + * dds_value = n / rate + * rate = n / dds_value + */ + div64_32(&n, dds_value, &r); + if (system_sample_rate >= 112000) + n *= 4; + else if (system_sample_rate >= 56000) + n *= 2; + return ((int)n) - system_sample_rate; +} + +static int hdsp_set_dds_offset(struct hdsp *hdsp, int offset_hz) +{ + int rate = hdsp->system_sample_rate + offset_hz; + hdsp_set_dds_value(hdsp, rate); + return 0; +} + +static int snd_hdsp_info_dds_offset(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = -5000; + uinfo->value.integer.max = 5000; + return 0; +} + +static int snd_hdsp_get_dds_offset(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct hdsp *hdsp = snd_kcontrol_chip(kcontrol); + + ucontrol->value.enumerated.item[0] = hdsp_dds_offset(hdsp); + return 0; +} + +static int snd_hdsp_put_dds_offset(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct hdsp *hdsp = snd_kcontrol_chip(kcontrol); + int change; + int val; + + if (!snd_hdsp_use_is_exclusive(hdsp)) + return -EBUSY; + val = ucontrol->value.enumerated.item[0]; + spin_lock_irq(&hdsp->lock); + if (val != hdsp_dds_offset(hdsp)) + change = (hdsp_set_dds_offset(hdsp, val) == 0) ? 1 : 0; + else + change = 0; + spin_unlock_irq(&hdsp->lock); + return change; +} + static struct snd_kcontrol_new snd_hdsp_9632_controls[] = { HDSP_DA_GAIN("DA Gain", 0), HDSP_AD_GAIN("AD Gain", 0), HDSP_PHONE_GAIN("Phones Gain", 0), -HDSP_XLR_BREAKOUT_CABLE("XLR Breakout Cable", 0) +HDSP_XLR_BREAKOUT_CABLE("XLR Breakout Cable", 0), +HDSP_DDS_OFFSET("DDS Sample Rate Offset", 0) }; static struct snd_kcontrol_new snd_hdsp_controls[] = { |