MCLK maybe not precise as required because of PLL,
but which still can be used and no side effect. so,
using DIV_ROUND_CLOSEST instead div.
e.g.
set mclk to 11289600 Hz, but get 11289598 Hz.
Signed-off-by: Sugar Zhang <[email protected]>
---
sound/soc/rockchip/rockchip_i2s.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index c9d5c52..05fce2c 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -280,10 +280,10 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
if (i2s->is_master_mode) {
mclk_rate = clk_get_rate(i2s->mclk);
bclk_rate = i2s->bclk_ratio * params_rate(params);
- if (bclk_rate == 0 || mclk_rate % bclk_rate)
+ if (!bclk_rate)
return -EINVAL;
- div_bclk = mclk_rate / bclk_rate;
+ div_bclk = DIV_ROUND_CLOSEST(mclk_rate, bclk_rate);
div_lrck = bclk_rate / params_rate(params);
regmap_update_bits(i2s->regmap, I2S_CKR,
I2S_CKR_MDIV_MASK,
--
2.7.4