In theory, this patch should work:
--- a/sound/pci/oxygen/xonar_pcm179x.c +++ b/sound/pci/oxygen/xonar_pcm179x.c @@ -419,6 +419,7 @@
data->generic.output_enable_bit = GPIO_ST_OUTPUT_ENABLE; data->dacs = chip->model.dac_channels_mixer / 2; + data->h6 = chip->model.dac_channels_mixer > 2; data->hp_gain_offset = 2*-18;
pcm1796_init(chip); @@ -1140,8 +1141,18 @@ break; case 0x85f4: chip->model = model_xonar_st; - /* TODO: daughterboard support */ - chip->model.shortname = "Xonar STX II"; + oxygen_clear_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_DB_MASK); + switch (oxygen_read16(chip, OXYGEN_GPIO_DATA) & GPIO_DB_MASK) { + default: + chip->model.shortname = "Xonar STX II"; + break; + case GPIO_DB_H6: + chip->model.shortname = "Xonar STX II+H6"; + chip->model.dac_channels_pcm = 8; + chip->model.dac_channels_mixer = 8; + chip->model.dac_mclks = OXYGEN_MCLKS(256, 128, 128); + break; + } chip->model.init = xonar_stx_init; chip->model.resume = xonar_stx_resume; chip->model.set_dac_params = set_pcm1796_params;