[PATCH] ASoC: fsl_spdif: fix sysclk_df type

From: Viorel Suman
Date: Mon Feb 18 2019 - 10:25:00 EST


According to RM SPDIF STC SYSCLK_DF field is 9-bit wide, values
being in 0..511 range. Use a proper type to handle sysclk_df.

Signed-off-by: Viorel Suman <viorel.suman@xxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
sound/soc/fsl/fsl_spdif.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index a26686e7281c..4842e6df9a2d 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -96,7 +96,7 @@ struct fsl_spdif_priv {
bool dpll_locked;
u32 txrate[SPDIF_TXRATE_MAX];
u8 txclk_df[SPDIF_TXRATE_MAX];
- u8 sysclk_df[SPDIF_TXRATE_MAX];
+ u16 sysclk_df[SPDIF_TXRATE_MAX];
u8 txclk_src[SPDIF_TXRATE_MAX];
u8 rxclk_src;
struct clk *txclk[SPDIF_TXRATE_MAX];
@@ -376,7 +376,8 @@ static int spdif_set_sample_rate(struct snd_pcm_substream *substream,
struct platform_device *pdev = spdif_priv->pdev;
unsigned long csfs = 0;
u32 stc, mask, rate;
- u8 clk, txclk_df, sysclk_df;
+ u16 sysclk_df;
+ u8 clk, txclk_df;
int ret;

switch (sample_rate) {
@@ -1109,8 +1110,9 @@ static u32 fsl_spdif_txclk_caldiv(struct fsl_spdif_priv *spdif_priv,
static const u32 rate[] = { 32000, 44100, 48000, 96000, 192000 };
bool is_sysclk = clk_is_match(clk, spdif_priv->sysclk);
u64 rate_ideal, rate_actual, sub;
- u32 sysclk_dfmin, sysclk_dfmax;
- u32 txclk_df, sysclk_df, arate;
+ u32 arate;
+ u16 sysclk_dfmin, sysclk_dfmax, sysclk_df;
+ u8 txclk_df;

/* The sysclk has an extra divisor [2, 512] */
sysclk_dfmin = is_sysclk ? 2 : 1;
--
2.20.1