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ASoC: rockchip: i2s-tdm: try normal clear before switch master mode

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As mind by sugar, sometimes the master device will exit unexpectly, stop
the sclk before the slave device to do stop trigger, for example the bt
module, which not act as a codec driver, is replaced by a dummy codec.

This patch adds a normal clear for i2s tdm before force switch to
master.

Fixes: c003b7fd8a ("ASoC: rockchip: i2s-tdm: Fix FIFO Clear failed on SLAVE mode sometimes")

Change-Id: Ia3ae2d9b008b07addcfcec38d4e970c376dae1e7
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2023-06-01 15:43:52 +08:00
committed by Tao Huang
parent b221622157
commit 7aaa4bb7a2
1 changed files with 6 additions and 0 deletions
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6
sound/soc/rockchip/rockchip_i2s_tdm.c
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@@ -397,6 +397,12 @@ static int rockchip_i2s_tdm_clear(struct rk_i2s_tdm_dev *i2s_tdm,
return -EINVAL;
}
regmap_update_bits(i2s_tdm->regmap, I2S_CLR, clr, clr);
ret = regmap_read_poll_timeout_atomic(i2s_tdm->regmap, I2S_CLR, val,
!(val & clr), 10, 100);
if (ret == 0)
return 0;
/*
* Workaround for FIFO clear on SLAVE mode:
*