diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2019-02-14 10:37:39 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-02-14 13:05:31 +0000 |
| commit | defc67c6e3638020cc6189d056e0bc187b297068 (patch) | |
| tree | 859575b5b35c9e527f855ed5232716ec1dd98ac7 | |
| parent | 5944170f497c8d8c93704c40d18e794351673a11 (diff) | |
| download | linux-defc67c6e3638020cc6189d056e0bc187b297068.tar.bz2 | |
ASoC: samsung: i2s: Get rid of a static spinlock
This patch makes the spinlock serializing access to the primary/secondary
PCM a per I2S controller lock, rather than a global one. There is no need
to have a global lock across multiple I2S controllers in the SoC.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/samsung/i2s.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index 8f0af4b0f25a..692a752b194c 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -88,9 +88,6 @@ struct i2s_dai { struct samsung_i2s_priv *priv; }; -/* Lock for cross i/f checks */ -static DEFINE_SPINLOCK(lock); - struct samsung_i2s_priv { struct platform_device *pdev; struct platform_device *pdev_sec; @@ -101,6 +98,9 @@ struct samsung_i2s_priv { /* Spinlock protecting access to the device's registers */ spinlock_t lock; + /* Lock for cross i/f checks */ + spinlock_t pcm_lock; + /* CPU DAIs and their corresponding drivers */ struct i2s_dai *dai; struct snd_soc_dai_driver *dai_drv; @@ -832,7 +832,7 @@ static int i2s_startup(struct snd_pcm_substream *substream, pm_runtime_get_sync(dai->dev); - spin_lock_irqsave(&lock, flags); + spin_lock_irqsave(&priv->pcm_lock, flags); i2s->mode |= DAI_OPENED; @@ -844,7 +844,7 @@ static int i2s_startup(struct snd_pcm_substream *substream, if (!any_active(i2s) && (priv->quirks & QUIRK_NEED_RSTCLR)) writel(CON_RSTCLR, i2s->priv->addr + I2SCON); - spin_unlock_irqrestore(&lock, flags); + spin_unlock_irqrestore(&priv->pcm_lock, flags); return 0; } @@ -852,11 +852,12 @@ static int i2s_startup(struct snd_pcm_substream *substream, static void i2s_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { + struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai); struct i2s_dai *i2s = to_info(dai); struct i2s_dai *other = get_other_dai(i2s); unsigned long flags; - spin_lock_irqsave(&lock, flags); + spin_lock_irqsave(&priv->pcm_lock, flags); i2s->mode &= ~DAI_OPENED; i2s->mode &= ~DAI_MANAGER; @@ -868,7 +869,7 @@ static void i2s_shutdown(struct snd_pcm_substream *substream, i2s->rfs = 0; i2s->bfs = 0; - spin_unlock_irqrestore(&lock, flags); + spin_unlock_irqrestore(&priv->pcm_lock, flags); pm_runtime_put(dai->dev); } @@ -1406,6 +1407,7 @@ static int samsung_i2s_probe(struct platform_device *pdev) pri_dai = &priv->dai[SAMSUNG_I2S_ID_PRIMARY - 1]; spin_lock_init(&priv->lock); + spin_lock_init(&priv->pcm_lock); if (!np) { if (i2s_pdata == NULL) { |