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Merge remote-tracking branch 'asoc/topic/wm8985' into asoc-next
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Mark Brown committed Feb 11, 2013
2 parents 555df91 + 5f3d25c commit 63ddcd7
Showing 1 changed file with 20 additions and 23 deletions.
43 changes: 20 additions & 23 deletions sound/soc/codecs/wm8985.c
Original file line number Diff line number Diff line change
Expand Up @@ -830,33 +830,30 @@ static int wm8985_set_pll(struct snd_soc_dai *dai, int pll_id,
struct pll_div pll_div;

codec = dai->codec;
if (freq_in && freq_out) {
if (!freq_in || !freq_out) {
/* disable the PLL */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, 0);
} else {
ret = pll_factors(&pll_div, freq_out * 4 * 2, freq_in);
if (ret)
return ret;
}

/* disable the PLL before reprogramming it */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, 0);

if (!freq_in || !freq_out)
return 0;

/* set PLLN and PRESCALE */
snd_soc_write(codec, WM8985_PLL_N,
(pll_div.div2 << WM8985_PLL_PRESCALE_SHIFT)
| pll_div.n);
/* set PLLK */
snd_soc_write(codec, WM8985_PLL_K_3, pll_div.k & 0x1ff);
snd_soc_write(codec, WM8985_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8985_PLL_K_1, (pll_div.k >> 18));
/* set the source of the clock to be the PLL */
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_CLKSEL_MASK, WM8985_CLKSEL);
/* enable the PLL */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, WM8985_PLLEN);
/* set PLLN and PRESCALE */
snd_soc_write(codec, WM8985_PLL_N,
(pll_div.div2 << WM8985_PLL_PRESCALE_SHIFT)
| pll_div.n);
/* set PLLK */
snd_soc_write(codec, WM8985_PLL_K_3, pll_div.k & 0x1ff);
snd_soc_write(codec, WM8985_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8985_PLL_K_1, (pll_div.k >> 18));
/* set the source of the clock to be the PLL */
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_CLKSEL_MASK, WM8985_CLKSEL);
/* enable the PLL */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, WM8985_PLLEN);
}
return 0;
}

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