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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>
This commit is contained in:
Sylwester Nawrocki 2019-03-19 13:11:02 +01:00 committed by Mark Brown
parent bf31cbfbe2
commit f29eec793d
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GPG Key ID: 24D68B725D5487D0
1 changed files with 11 additions and 16 deletions
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27
sound/soc/samsung/i2s.c
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@ -88,12 +88,6 @@ struct samsung_i2s_priv {
struct platform_device *pdev;
struct platform_device *pdev_sec;
/* Memory mapped SFR region */
void __iomem *addr;
/* Spinlock protecting access to the device's registers */
spinlock_t lock;
/* Lock for cross interface checks */
spinlock_t pcm_lock;
@ -122,6 +116,15 @@ struct samsung_i2s_priv {
/* The clock provider's data */
struct clk *clk_table[3];
struct clk_onecell_data clk_data;
/* Spinlock protecting member fields below */
spinlock_t lock;
/* Memory mapped SFR region */
void __iomem *addr;
/* A flag indicating the I2S slave mode operation */
bool slave_mode;
};
/* Returns true if this is the 'overlay' stereo DAI */
@ -130,15 +133,6 @@ static inline bool is_secondary(struct i2s_dai *i2s)
return i2s->drv->id == SAMSUNG_I2S_ID_SECONDARY;
}
/* If operating in SoC-Slave mode */
static inline bool is_slave(struct i2s_dai *i2s)
{
struct samsung_i2s_priv *priv = i2s->priv;
u32 mod = readl(priv->addr + I2SMOD);
return (mod & (1 << priv->variant_regs->mss_off)) ? true : false;
}
/* If this interface of the controller is transmitting data */
static inline bool tx_active(struct i2s_dai *i2s)
{
@ -715,6 +709,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
mod &= ~(sdf_mask | lrp_rlow | mod_slave);
mod |= tmp;
writel(mod, priv->addr + I2SMOD);
priv->slave_mode = (mod & mod_slave);
spin_unlock_irqrestore(&priv->lock, flags);
pm_runtime_put(dai->dev);
@ -917,7 +912,7 @@ static int config_setup(struct i2s_dai *i2s)
set_rfs(i2s, rfs);
/* Don't bother with PSR in Slave mode */
if (is_slave(i2s))
if (priv->slave_mode)
return 0;
if (!(priv->quirks & QUIRK_NO_MUXPSR)) {