This patch caches the current SYNCCLK settings in the arizona_fll struct and uses these to simplify the code which determines which source should be used for the REFCLK and SYNCCLK inputs.
Signed-off-by: Charles Keepax ckeepax@opensource.wolfsonmicro.com --- sound/soc/codecs/arizona.c | 101 ++++++++++++++++++++++---------------------- sound/soc/codecs/arizona.h | 2 + 2 files changed, 52 insertions(+), 51 deletions(-)
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index c14e755..03076ef 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -1078,15 +1078,39 @@ int arizona_set_fll(struct arizona_fll *fll, int source, unsigned int Fref, unsigned int Fout) { struct arizona *arizona = fll->arizona; - struct arizona_fll_cfg cfg, sync; + struct arizona_fll_cfg ref, sync; unsigned int reg; - int syncsrc; bool ena; int ret;
if (fll->fref == Fref && fll->fout == Fout) return 0;
+ if (fll->ref_src < 0 || fll->ref_src == source) { + if (Fout) { + ret = arizona_calc_fll(fll, &ref, Fref, Fout); + if (ret != 0) + return ret; + } + + fll->sync_src = -1; + fll->ref_src = source; + fll->ref_freq = Fref; + } else { + if (Fout) { + ret = arizona_calc_fll(fll, &ref, fll->ref_freq, Fout); + if (ret != 0) + return ret; + + ret = arizona_calc_fll(fll, &sync, Fref, Fout); + if (ret != 0) + return ret; + } + + fll->sync_src = source; + fll->sync_freq = Fref; + } + ret = regmap_read(arizona->regmap, fll->base + 1, ®); if (ret != 0) { arizona_fll_err(fll, "Failed to read current state: %d\n", @@ -1096,24 +1120,32 @@ int arizona_set_fll(struct arizona_fll *fll, int source, ena = reg & ARIZONA_FLL1_ENA;
if (Fout) { - syncsrc = fll->ref_src; + regmap_update_bits(arizona->regmap, fll->base + 5, + ARIZONA_FLL1_OUTDIV_MASK, + ref.outdiv << ARIZONA_FLL1_OUTDIV_SHIFT);
- if (source == syncsrc) - syncsrc = -1; + arizona_apply_fll(arizona, fll->base, &ref, fll->ref_src); + if (fll->sync_src >= 0) + arizona_apply_fll(arizona, fll->base + 0x10, &sync, + fll->sync_src);
- if (syncsrc >= 0) { - ret = arizona_calc_fll(fll, &sync, Fref, Fout); - if (ret != 0) - return ret; + if (!ena) + pm_runtime_get(arizona->dev);
- ret = arizona_calc_fll(fll, &cfg, fll->ref_freq, Fout); - if (ret != 0) - return ret; - } else { - ret = arizona_calc_fll(fll, &cfg, Fref, Fout); - if (ret != 0) - return ret; - } + /* Clear any pending completions */ + try_wait_for_completion(&fll->ok); + + regmap_update_bits(arizona->regmap, fll->base + 1, + ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA); + if (fll->sync_src >= 0) + regmap_update_bits(arizona->regmap, fll->base + 0x11, + ARIZONA_FLL1_SYNC_ENA, + ARIZONA_FLL1_SYNC_ENA); + + ret = wait_for_completion_timeout(&fll->ok, + msecs_to_jiffies(250)); + if (ret == 0) + arizona_fll_warn(fll, "Timed out waiting for lock\n"); } else { regmap_update_bits(arizona->regmap, fll->base + 1, ARIZONA_FLL1_ENA, 0); @@ -1122,42 +1154,8 @@ int arizona_set_fll(struct arizona_fll *fll, int source,
if (ena) pm_runtime_put_autosuspend(arizona->dev); - - fll->fref = Fref; - fll->fout = Fout; - - return 0; }
- regmap_update_bits(arizona->regmap, fll->base + 5, - ARIZONA_FLL1_OUTDIV_MASK, - cfg.outdiv << ARIZONA_FLL1_OUTDIV_SHIFT); - - if (syncsrc >= 0) { - arizona_apply_fll(arizona, fll->base, &cfg, syncsrc); - arizona_apply_fll(arizona, fll->base + 0x10, &sync, source); - } else { - arizona_apply_fll(arizona, fll->base, &cfg, source); - } - - if (!ena) - pm_runtime_get(arizona->dev); - - /* Clear any pending completions */ - try_wait_for_completion(&fll->ok); - - regmap_update_bits(arizona->regmap, fll->base + 1, - ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA); - if (syncsrc >= 0) - regmap_update_bits(arizona->regmap, fll->base + 0x11, - ARIZONA_FLL1_SYNC_ENA, - ARIZONA_FLL1_SYNC_ENA); - - ret = wait_for_completion_timeout(&fll->ok, - msecs_to_jiffies(250)); - if (ret == 0) - arizona_fll_warn(fll, "Timed out waiting for lock\n"); - fll->fref = Fref; fll->fout = Fout;
@@ -1176,6 +1174,7 @@ int arizona_init_fll(struct arizona *arizona, int id, int base, int lock_irq, fll->id = id; fll->base = base; fll->arizona = arizona; + fll->sync_src = -1;
/* Configure default refclk to 32kHz if we have one */ regmap_read(arizona->regmap, ARIZONA_CLOCK_32K_1, &val); diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h index 124f9f0..37766b5 100644 --- a/sound/soc/codecs/arizona.h +++ b/sound/soc/codecs/arizona.h @@ -201,6 +201,8 @@ struct arizona_fll { unsigned int fref; unsigned int fout;
+ int sync_src; + unsigned int sync_freq; int ref_src; unsigned int ref_freq;