diff options
| -rw-r--r-- | sound/soc/codecs/tas2552.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c index 8840f72f3c4a..10116169a239 100644 --- a/sound/soc/codecs/tas2552.c +++ b/sound/soc/codecs/tas2552.c @@ -192,7 +192,7 @@ static int tas2552_setup_pll(struct snd_soc_codec *codec, * pll_clk = (.5 * pll_clkin * J.D) / 2^p * Need to fill in J and D here based on incoming freq */ - unsigned int d; + unsigned int d, q, t; u8 j; u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK; u8 p = snd_soc_read(codec, TAS2552_PLL_CTRL_1); @@ -200,9 +200,12 @@ static int tas2552_setup_pll(struct snd_soc_codec *codec, p = (p >> 7); recalc: - j = (pll_clk * 2 * (1 << p)) / pll_clkin; - d = (pll_clk * 2 * (1 << p)) % pll_clkin; - d /= (pll_clkin / 10000); + t = (pll_clk * 2) << p; + j = t / pll_clkin; + d = t % pll_clkin; + t = pll_clkin / 10000; + q = d / (t + 1); + d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000; if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) { if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) { |