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ASoC: samsung: i2s: Don't use register read to determine slave/master mode
We can simplify the code by caching the CPU DAI master/slave information rather than reading previously set register bit. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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1 changed files with 11 additions and 16 deletions
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@ -88,12 +88,6 @@ struct samsung_i2s_priv {
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struct platform_device *pdev;
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struct platform_device *pdev_sec;
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/* Memory mapped SFR region */
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void __iomem *addr;
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/* Spinlock protecting access to the device's registers */
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spinlock_t lock;
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/* Lock for cross interface checks */
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spinlock_t pcm_lock;
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@ -122,6 +116,15 @@ struct samsung_i2s_priv {
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/* The clock provider's data */
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struct clk *clk_table[3];
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struct clk_onecell_data clk_data;
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/* Spinlock protecting member fields below */
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spinlock_t lock;
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/* Memory mapped SFR region */
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void __iomem *addr;
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/* A flag indicating the I2S slave mode operation */
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bool slave_mode;
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};
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/* Returns true if this is the 'overlay' stereo DAI */
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@ -130,15 +133,6 @@ static inline bool is_secondary(struct i2s_dai *i2s)
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return i2s->drv->id == SAMSUNG_I2S_ID_SECONDARY;
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}
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/* If operating in SoC-Slave mode */
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static inline bool is_slave(struct i2s_dai *i2s)
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{
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struct samsung_i2s_priv *priv = i2s->priv;
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u32 mod = readl(priv->addr + I2SMOD);
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return (mod & (1 << priv->variant_regs->mss_off)) ? true : false;
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}
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/* If this interface of the controller is transmitting data */
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static inline bool tx_active(struct i2s_dai *i2s)
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{
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@ -715,6 +709,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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mod &= ~(sdf_mask | lrp_rlow | mod_slave);
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mod |= tmp;
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writel(mod, priv->addr + I2SMOD);
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priv->slave_mode = (mod & mod_slave);
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spin_unlock_irqrestore(&priv->lock, flags);
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pm_runtime_put(dai->dev);
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@ -917,7 +912,7 @@ static int config_setup(struct i2s_dai *i2s)
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set_rfs(i2s, rfs);
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/* Don't bother with PSR in Slave mode */
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if (is_slave(i2s))
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if (priv->slave_mode)
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return 0;
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if (!(priv->quirks & QUIRK_NO_MUXPSR)) {
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