summaryrefslogtreecommitdiffstats
path: root/sound/soc/sunxi
diff options
context:
space:
mode:
authorClément Péron <peron.clem@gmail.com>2020-10-30 15:46:37 +0100
committerMark Brown <broonie@kernel.org>2020-10-30 17:58:52 +0000
commit9c2d255f0e63f8e54bd8345f9c59c4060cf4bbd4 (patch)
treed3d707c9f28707b61b0d561899250abf08b602f0 /sound/soc/sunxi
parent73adf87b7a5882408b0a17da59e69df4be12a968 (diff)
downloadlinux-9c2d255f0e63f8e54bd8345f9c59c4060cf4bbd4.tar.gz
linux-9c2d255f0e63f8e54bd8345f9c59c4060cf4bbd4.tar.bz2
linux-9c2d255f0e63f8e54bd8345f9c59c4060cf4bbd4.zip
ASoC: sun4i-i2s: Change get_sr() and get_wss() to be more explicit
We are actually using a complex formula to just return a bunch of simple values. Also this formula is wrong for sun4i when calling get_wss() the function return 4 instead of 3. Replace this with a simpler switch case. Also drop the i2s params which is unused and return a simple int as returning an error code could be out of range for an s8 and there is no optim to return a s8 here. Fixes: 619c15f7fac9 ("ASoC: sun4i-i2s: Change SR and WSS computation") Reviewed-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Clément Péron <peron.clem@gmail.com> Link: https://lore.kernel.org/r/20201030144648.397824-5-peron.clem@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sunxi')
-rw-r--r--sound/soc/sunxi/sun4i-i2s.c69
1 files changed, 44 insertions, 25 deletions
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 24b3137afbc2..6ee9c2995b4f 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -175,8 +175,8 @@ struct sun4i_i2s_quirks {
unsigned int num_mclk_dividers;
unsigned long (*get_bclk_parent_rate)(const struct sun4i_i2s *);
- s8 (*get_sr)(const struct sun4i_i2s *, int);
- s8 (*get_wss)(const struct sun4i_i2s *, int);
+ int (*get_sr)(unsigned int width);
+ int (*get_wss)(unsigned int width);
/*
* In the set_chan_cfg() function pointer:
@@ -387,37 +387,56 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
return 0;
}
-static s8 sun4i_i2s_get_sr(const struct sun4i_i2s *i2s, int width)
+static int sun4i_i2s_get_sr(unsigned int width)
{
- if (width < 16 || width > 24)
- return -EINVAL;
-
- if (width % 4)
- return -EINVAL;
+ switch (width) {
+ case 16:
+ return 0;
+ case 20:
+ return 1;
+ case 24:
+ return 2;
+ }
- return (width - 16) / 4;
+ return -EINVAL;
}
-static s8 sun4i_i2s_get_wss(const struct sun4i_i2s *i2s, int width)
+static int sun4i_i2s_get_wss(unsigned int width)
{
- if (width < 16 || width > 32)
- return -EINVAL;
-
- if (width % 4)
- return -EINVAL;
+ switch (width) {
+ case 16:
+ return 0;
+ case 20:
+ return 1;
+ case 24:
+ return 2;
+ case 32:
+ return 3;
+ }
- return (width - 16) / 4;
+ return -EINVAL;
}
-static s8 sun8i_i2s_get_sr_wss(const struct sun4i_i2s *i2s, int width)
+static int sun8i_i2s_get_sr_wss(unsigned int width)
{
- if (width % 4)
- return -EINVAL;
-
- if (width < 8 || width > 32)
- return -EINVAL;
+ switch (width) {
+ case 8:
+ return 1;
+ case 12:
+ return 2;
+ case 16:
+ return 3;
+ case 20:
+ return 4;
+ case 24:
+ return 5;
+ case 28:
+ return 6;
+ case 32:
+ return 7;
+ }
- return (width - 8) / 4 + 1;
+ return -EINVAL;
}
static int sun4i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
@@ -582,11 +601,11 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
}
i2s->playback_dma_data.addr_width = width;
- sr = i2s->variant->get_sr(i2s, word_size);
+ sr = i2s->variant->get_sr(word_size);
if (sr < 0)
return -EINVAL;
- wss = i2s->variant->get_wss(i2s, slot_width);
+ wss = i2s->variant->get_wss(slot_width);
if (wss < 0)
return -EINVAL;