From: Chris Zhong Date: Mon, 18 Jul 2016 14:34:34 +0000 (+0800) Subject: ASoC: rockchip: correct the spdif clk X-Git-Tag: v4.9.8~1572^2~7^2~4^4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=46dd2e28a90e48fbf1b7e253933fa3b7242e9b1b;p=platform%2Fkernel%2Flinux-rpi3.git ASoC: rockchip: correct the spdif clk The spdif mclk should be 128 times of sample rate, and there is a internal divider, the real rate of spdif mclk is mclk / (div + 1). Hence, the original driver always get the good frequency for 48000/96000/44100/192000. But for 32000, the mclk is incorrect, it should be 32000*128, but get 48000*128. Do not use the internal divider here, just set all mclk to 128 * sample rate directly. Signed-off-by: Chris Zhong Signed-off-by: Mark Brown --- diff --git a/sound/soc/rockchip/rockchip_spdif.c b/sound/soc/rockchip/rockchip_spdif.c index 100781e..4ca2657 100644 --- a/sound/soc/rockchip/rockchip_spdif.c +++ b/sound/soc/rockchip/rockchip_spdif.c @@ -101,21 +101,7 @@ static int rk_spdif_hw_params(struct snd_pcm_substream *substream, int ret; srate = params_rate(params); - switch (srate) { - case 32000: - case 48000: - case 96000: - mclk = 96000 * 128; /* 12288000 hz */ - break; - case 44100: - mclk = 44100 * 256; /* 11289600 hz */ - break; - case 192000: - mclk = 192000 * 128; /* 24576000 hz */ - break; - default: - return -EINVAL; - } + mclk = srate * 128; switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: @@ -139,7 +125,6 @@ static int rk_spdif_hw_params(struct snd_pcm_substream *substream, return ret; } - val |= SPDIF_CFGR_CLK_DIV(mclk/(srate * 256)); ret = regmap_update_bits(spdif->regmap, SPDIF_CFGR, SPDIF_CFGR_CLK_DIV_MASK | SPDIF_CFGR_HALFWORD_ENABLE | SDPIF_CFGR_VDW_MASK,