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Subject[PATCH v3 10/11] ASoC: sun4i-i2s: Update global enable with bitmask
Date
From: Marcus Cooper <codekipper@gmail.com>

The default value of the config register is different on newer
SoCs and therefore enabling/disabling with a register write
will clear bits used to set the direction of the clock and frame
pins.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
---
sound/soc/sunxi/sun4i-i2s.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 475572e1c586..a6b464c8cc6c 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -529,8 +529,8 @@ static int sun4i_i2s_startup(struct snd_pcm_substream *substream,
struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);

/* Enable the whole hardware block */
- regmap_write(i2s->regmap, SUN4I_I2S_CTRL_REG,
- SUN4I_I2S_CTRL_GL_EN);
+ regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
+ SUN4I_I2S_CTRL_GL_EN, SUN4I_I2S_CTRL_GL_EN);

/* Enable the first output line */
regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
@@ -553,7 +553,8 @@ static void sun4i_i2s_shutdown(struct snd_pcm_substream *substream,
SUN4I_I2S_CTRL_SDO_EN_MASK, 0);

/* Disable the whole hardware block */
- regmap_write(i2s->regmap, SUN4I_I2S_CTRL_REG, 0);
+ regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
+ SUN4I_I2S_CTRL_GL_EN, 0);
}

static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
--
2.14.1
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