From 00b8dd7dd71ef129176731d5fa24f5e298797599 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 10 Jan 2011 16:09:23 +0100 Subject: [PATCH] ALSA: virtuoso: use lower master clock with H6 daughterboard Because of the unshielded connector cable, it is important to use as low a master clock frequency as possible with the H6. For double rate modes (64-96 kHz), the MCLK rate is unconditionally lowered from 512x to 256x because the higher rate would not improve anything. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/pci/oxygen/xonar_pcm179x.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) diff --git a/sound/pci/oxygen/xonar_pcm179x.c b/sound/pci/oxygen/xonar_pcm179x.c index fce55fa5b0b0..2a50a55cbbb1 100644 --- a/sound/pci/oxygen/xonar_pcm179x.c +++ b/sound/pci/oxygen/xonar_pcm179x.c @@ -224,6 +224,7 @@ struct xonar_pcm179x { u8 pcm1796_regs[4][5]; unsigned int current_rate; bool os_128; + bool h6; bool hp_active; s8 hp_gain_offset; bool has_cs2000; @@ -384,6 +385,7 @@ static void xonar_hdav_init(struct oxygen *chip) data->pcm179x.generic.ext_power_int_reg = OXYGEN_GPI_INTERRUPT_MASK; data->pcm179x.generic.ext_power_bit = GPI_EXT_POWER; data->pcm179x.dacs = chip->model.dac_channels_mixer / 2; + data->pcm179x.h6 = chip->model.dac_channels_mixer > 2; pcm1796_init(chip); @@ -461,6 +463,7 @@ static void xonar_st_init(struct oxygen *chip) struct xonar_pcm179x *data = chip->model_data; data->generic.anti_pop_delay = 100; + data->h6 = chip->model.dac_channels_mixer > 2; data->has_cs2000 = 1; data->cs2000_regs[CS2000_FUN_CFG_1] = CS2000_REF_CLK_DIV_1; data->broken_i2c = true; @@ -554,11 +557,10 @@ static unsigned int mclk_from_rate(struct oxygen *chip, unsigned int rate) struct xonar_pcm179x *data = chip->model_data; if (rate <= 32000) - return OXYGEN_I2S_MCLK_512; - else if (rate <= 48000 && data->os_128) - return OXYGEN_I2S_MCLK_512; - else if (rate <= 96000) - return OXYGEN_I2S_MCLK_256; + return data->h6 ? OXYGEN_I2S_MCLK_256 : OXYGEN_I2S_MCLK_512; + else if (rate <= 48000) + return data->os_128 && !data->h6 + ? OXYGEN_I2S_MCLK_512 : OXYGEN_I2S_MCLK_256; else return OXYGEN_I2S_MCLK_128; } @@ -579,9 +581,9 @@ static void update_pcm1796_oversampling(struct oxygen *chip) unsigned int i; u8 reg; - if (data->current_rate <= 32000) + if (data->current_rate <= 32000 && !data->h6) reg = PCM1796_OS_128; - else if (data->current_rate <= 48000 && data->os_128) + else if (data->current_rate <= 48000 && data->os_128 && !data->h6) reg = PCM1796_OS_128; else if (data->current_rate <= 96000 || data->os_128) reg = PCM1796_OS_64; @@ -636,28 +638,31 @@ static void update_cs2000_rate(struct oxygen *chip, unsigned int rate) switch (rate) { case 32000: - rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_512; + if (data->h6) + rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_256; + else + rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_512; break; case 44100: - if (data->os_128) + if (data->os_128 && !data->h6) rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_512; else rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256; break; default: /* 48000 */ - if (data->os_128) + if (data->os_128 && !data->h6) rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_512; else rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256; break; case 64000: - rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_512; + rate_mclk = OXYGEN_RATE_32000 | OXYGEN_I2S_MCLK_256; break; case 88200: - rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_512; + rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_256; break; case 96000: - rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_512; + rate_mclk = OXYGEN_RATE_48000 | OXYGEN_I2S_MCLK_256; break; case 176400: rate_mclk = OXYGEN_RATE_44100 | OXYGEN_I2S_MCLK_512; -- 2.20.1