redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

ASoC: arizona: fix range of OPCLK_REF

Browse source 
The code was able to generate illegal OPCLK_REF values because the
reference frequency tables listed all values of SYSCLK instead of
valid values for OPCLK_REF clock. The maximum OPCLK_REF clock is
49.152MHz or 45.1584MHz.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald 2015-11-03 14:24:12 +00:00 committed by Mark Brown
parent 6ff33f3902
commit 341604ad83
1 changed files with 5 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
sound/soc/codecs/arizona.c
View file

@ -979,24 +979,18 @@ void arizona_init_dvfs(struct arizona_priv *priv)
}
EXPORT_SYMBOL_GPL(arizona_init_dvfs);
static unsigned int arizona_sysclk_48k_rates[] = {
static unsigned int arizona_opclk_ref_48k_rates[] = {
6144000,
12288000,
24576000,
49152000,
73728000,
98304000,
147456000,
};
static unsigned int arizona_sysclk_44k1_rates[] = {
static unsigned int arizona_opclk_ref_44k1_rates[] = {
5644800,
11289600,
22579200,
45158400,
67737600,
90316800,
135475200,
};
static int arizona_set_opclk(struct snd_soc_codec *codec, unsigned int clk,
@ -1021,11 +1015,11 @@ static int arizona_set_opclk(struct snd_soc_codec *codec, unsigned int clk,
}
if (refclk % 8000)
rates = arizona_sysclk_44k1_rates;
rates = arizona_opclk_ref_44k1_rates;
else
rates = arizona_sysclk_48k_rates;
rates = arizona_opclk_ref_48k_rates;
for (ref = 0; ref < ARRAY_SIZE(arizona_sysclk_48k_rates) &&
for (ref = 0; ref < ARRAY_SIZE(arizona_opclk_ref_48k_rates) &&
rates[ref] <= refclk; ref++) {
div = 1;
while (rates[ref] / div >= freq && div < 32) {