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ASoC: arizona: Tidy up SYNCCLK selection and cache values 

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>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Charles Keepax 2013-02-20 17:28:35 +00:00 committed by Mark Brown
parent 19b34bdc6d
commit 9e359c645f
2 changed files with 52 additions and 51 deletions
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101
sound/soc/codecs/arizona.c
View File

@ -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, &reg);
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);

2
sound/soc/codecs/arizona.h
View File

@ -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;