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ASoC: wm8993: Refactor set_pll code to avoid GCC warnings 

Refactor set_pll code to avoid the following warnings:

sound/soc/codecs/wm8983.c:873:40: warning: 'pll_div.k' may be used uninitialized in this function [-Wuninitialized]
sound/soc/codecs/wm8983.c:870:9: warning: 'pll_div.n' may be used uninitialized in this function [-Wuninitialized]
sound/soc/codecs/wm8983.c:869:23: warning: 'pll_div.div2' may be used uninitialized in this function [-Wuninitialized]

Do the same as in commit 86ce6c9a (ASoC: WM8804: Refactor set_pll code to avoid
GCC warnings).

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Fabio Estevam 2012-12-12 01:24:40 -02:00 committed by Mark Brown
parent a49f0d1ea3
commit 6757d8cc0c
1 changed files with 22 additions and 19 deletions
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41
sound/soc/codecs/wm8983.c
View File

@ -851,30 +851,33 @@ static int wm8983_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, WM8983_POWER_MANAGEMENT_1,
WM8983_PLLEN_MASK, 0);
return 0;
} else {
ret = pll_factors(&pll_div, freq_out * 4 * 2, freq_in);
if (ret)
return ret;
/* disable the PLL before re-programming it */
snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
WM8983_PLLEN_MASK, 0);
/* set PLLN and PRESCALE */
snd_soc_write(codec, WM8983_PLL_N,
(pll_div.div2 << WM8983_PLL_PRESCALE_SHIFT)
| pll_div.n);
/* set PLLK */
snd_soc_write(codec, WM8983_PLL_K_3, pll_div.k & 0x1ff);
snd_soc_write(codec, WM8983_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8983_PLL_K_1, (pll_div.k >> 18));
/* enable the PLL */
snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
WM8983_PLLEN_MASK, WM8983_PLLEN);
}
/* disable the PLL before re-programming it */
snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
WM8983_PLLEN_MASK, 0);
if (!freq_in || !freq_out)
return 0;
/* set PLLN and PRESCALE */
snd_soc_write(codec, WM8983_PLL_N,
(pll_div.div2 << WM8983_PLL_PRESCALE_SHIFT)
| pll_div.n);
/* set PLLK */
snd_soc_write(codec, WM8983_PLL_K_3, pll_div.k & 0x1ff);
snd_soc_write(codec, WM8983_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8983_PLL_K_1, (pll_div.k >> 18));
/* enable the PLL */
snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
WM8983_PLLEN_MASK, WM8983_PLLEN);
return 0;
}