When we configure the PLL record the input and output frequency, then if we
get asked to configure the same values again just skip reprogramming the
hardware. This makes things a bit easier to use for machine drivers since
it means they don't need to keep track of if they've programmed the PLL
so much.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220603103530.3844527-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
struct nau8822_pll *pll_param = &nau8822->pll;
int ret, fs;
+ if (freq_in == pll_param->freq_in &&
+ freq_out == pll_param->freq_out)
+ return 0;
+
fs = freq_out / 256;
ret = nau8822_calc_pll(freq_in, fs, pll_param);
snd_soc_component_update_bits(component,
NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_PLL_EN_MASK, NAU8822_PLL_ON);
+ pll_param->freq_in = freq_in;
+ pll_param->freq_out = freq_out;
+
return 0;
}
int mclk_scaler;
int pll_frac;
int pll_int;
+ int freq_in;
+ int freq_out;
};
/* Codec Private Data */