diff options
Diffstat (limited to 'sound/soc/codecs/rl6231.c')
| -rw-r--r-- | sound/soc/codecs/rl6231.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/sound/soc/codecs/rl6231.c b/sound/soc/codecs/rl6231.c index 56650d6c2f53..96f3e906dfef 100644 --- a/sound/soc/codecs/rl6231.c +++ b/sound/soc/codecs/rl6231.c @@ -43,6 +43,19 @@ int rl6231_calc_dmic_clk(int rate) } EXPORT_SYMBOL_GPL(rl6231_calc_dmic_clk); +struct pll_calc_map { + unsigned int pll_in; + unsigned int pll_out; + int k; + int n; + int m; + bool m_bp; +}; + +static const struct pll_calc_map pll_preset_table[] = { + {19200000, 24576000, 3, 30, 3, false}, +}; + /** * rl6231_pll_calc - Calcualte PLL M/N/K code. * @freq_in: external clock provided to codec. @@ -57,7 +70,7 @@ int rl6231_pll_calc(const unsigned int freq_in, const unsigned int freq_out, struct rl6231_pll_code *pll_code) { int max_n = RL6231_PLL_N_MAX, max_m = RL6231_PLL_M_MAX; - int k, red, n_t, pll_out, in_t, out_t; + int i, k, red, n_t, pll_out, in_t, out_t; int n = 0, m = 0, m_t = 0; int red_t = abs(freq_out - freq_in); bool bypass = false; @@ -65,6 +78,18 @@ int rl6231_pll_calc(const unsigned int freq_in, if (RL6231_PLL_INP_MAX < freq_in || RL6231_PLL_INP_MIN > freq_in) return -EINVAL; + for (i = 0; i < ARRAY_SIZE(pll_preset_table); i++) { + if (freq_in == pll_preset_table[i].pll_in && + freq_out == pll_preset_table[i].pll_out) { + k = pll_preset_table[i].k; + m = pll_preset_table[i].m; + n = pll_preset_table[i].n; + bypass = pll_preset_table[i].m_bp; + pr_debug("Use preset PLL parameter table\n"); + goto code_find; + } + } + k = 100000000 / freq_out - 2; if (k > RL6231_PLL_K_MAX) k = RL6231_PLL_K_MAX; |