From 31c6e53a4da5fe626b99e1ebf777d751994e3281 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Thu, 25 Jan 2024 10:31:17 +0000 Subject: ASoC: cs42l43: Use fls to calculate the pre-divider for the PLL Use fls to calculate the pre-divider and input frequency for the PLL, this is marginally faster than the previous loop. Suggested-by: Andy Shevchenko Signed-off-by: Charles Keepax Link: https://msgid.link/r/20240125103117.2622095-7-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown --- sound/soc/codecs/cs42l43.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'sound/soc/codecs/cs42l43.c') diff --git a/sound/soc/codecs/cs42l43.c b/sound/soc/codecs/cs42l43.c index 23e9557494af..2c402086924d 100644 --- a/sound/soc/codecs/cs42l43.c +++ b/sound/soc/codecs/cs42l43.c @@ -1338,10 +1338,9 @@ static int cs42l43_enable_pll(struct cs42l43_codec *priv) dev_dbg(priv->dev, "Enabling PLL at %uHz\n", freq); - while (freq > cs42l43_pll_configs[ARRAY_SIZE(cs42l43_pll_configs) - 1].freq) { - div++; - freq /= 2; - } + div = fls(freq) - + fls(cs42l43_pll_configs[ARRAY_SIZE(cs42l43_pll_configs) - 1].freq); + freq >>= div; if (div <= CS42L43_PLL_REFCLK_DIV_MASK) { int i; -- cgit v1.2.3