The struct nhlt_format's fmt_config is a flexible array, it must not be
used as normal array.
When moving to the next nhlt_fmt_cfg we need to take into account the data
behind the ->config.caps (indicated by ->config.size).
The logic of the code also changed: it is no longer saves the _last_
fmt_cfg for all found rates.
At the same time prepare the code for converting the fmt_config to a u8
flexible array to prevent further abuse.
Fixes: bc2bd45b1f7f3 ("ASoC: Intel: Skylake: Parse nhlt and register clock device")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
sound/soc/intel/skylake/skl-nhlt.c | 37 ++++++++++++++++++++----------
1 file changed, 25 insertions(+), 12 deletions(-)
diff --git a/sound/soc/intel/skylake/skl-nhlt.c b/sound/soc/intel/skylake/skl-nhlt.c
index 366f7bd9bc02..deb7b820325e 100644
--- a/sound/soc/intel/skylake/skl-nhlt.c
+++ b/sound/soc/intel/skylake/skl-nhlt.c
@@ -111,11 +111,12 @@ static void skl_get_ssp_clks(struct skl_dev *skl, struct skl_ssp_clk *ssp_clks,
if (fmt->fmt_count == 0)
return;
+ fmt_cfg = (struct nhlt_fmt_cfg *)fmt->fmt_config;
for (i = 0; i < fmt->fmt_count; i++) {
+ struct nhlt_fmt_cfg *saved_fmt_cfg = fmt_cfg;
bool present = false;
- fmt_cfg = &fmt->fmt_config[i];
- wav_fmt = &fmt_cfg->fmt_ext;
+ wav_fmt = &saved_fmt_cfg->fmt_ext;
channels = wav_fmt->fmt.channels;
bps = wav_fmt->fmt.bits_per_sample;
@@ -133,12 +134,18 @@ static void skl_get_ssp_clks(struct skl_dev *skl, struct skl_ssp_clk *ssp_clks,
* derive the rate.
*/
for (j = i; j < fmt->fmt_count; j++) {
- fmt_cfg = &fmt->fmt_config[j];
- wav_fmt = &fmt_cfg->fmt_ext;
+ struct nhlt_fmt_cfg *tmp_fmt_cfg = fmt_cfg;
+
+ wav_fmt = &tmp_fmt_cfg->fmt_ext;
if ((fs == wav_fmt->fmt.samples_per_sec) &&
- (bps == wav_fmt->fmt.bits_per_sample))
+ (bps == wav_fmt->fmt.bits_per_sample)) {
channels = max_t(u16, channels,
wav_fmt->fmt.channels);
+ saved_fmt_cfg = tmp_fmt_cfg;
+ }
+ /* Move to the next nhlt_fmt_cfg */
+ tmp_fmt_cfg = (struct nhlt_fmt_cfg *)(tmp_fmt_cfg->config.caps +
+ tmp_fmt_cfg->config.size);
}
rate = channels * bps * fs;
@@ -154,8 +161,11 @@ static void skl_get_ssp_clks(struct skl_dev *skl, struct skl_ssp_clk *ssp_clks,
/* Fill rate and parent for sclk/sclkfs */
if (!present) {
+ struct nhlt_fmt_cfg *first_fmt_cfg;
+
+ first_fmt_cfg = (struct nhlt_fmt_cfg *)fmt->fmt_config;
i2s_config_ext = (struct skl_i2s_config_blob_ext *)
- fmt->fmt_config[0].config.caps;
+ first_fmt_cfg->config.caps;
/* MCLK Divider Source Select */
if (is_legacy_blob(i2s_config_ext->hdr.sig)) {
@@ -169,6 +179,9 @@ static void skl_get_ssp_clks(struct skl_dev *skl, struct skl_ssp_clk *ssp_clks,
parent = skl_get_parent_clk(clk_src);
+ /* Move to the next nhlt_fmt_cfg */
+ fmt_cfg = (struct nhlt_fmt_cfg *)(fmt_cfg->config.caps +
+ fmt_cfg->config.size);
/*
* Do not copy the config data if there is no parent
* clock available for this clock source select
@@ -177,9 +190,9 @@ static void skl_get_ssp_clks(struct skl_dev *skl, struct skl_ssp_clk *ssp_clks,
continue;
sclk[id].rate_cfg[rate_index].rate = rate;
- sclk[id].rate_cfg[rate_index].config = fmt_cfg;
+ sclk[id].rate_cfg[rate_index].config = saved_fmt_cfg;
sclkfs[id].rate_cfg[rate_index].rate = rate;
- sclkfs[id].rate_cfg[rate_index].config = fmt_cfg;
+ sclkfs[id].rate_cfg[rate_index].config = saved_fmt_cfg;
sclk[id].parent_name = parent->name;
sclkfs[id].parent_name = parent->name;
@@ -193,13 +206,13 @@ static void skl_get_mclk(struct skl_dev *skl, struct skl_ssp_clk *mclk,
{
struct skl_i2s_config_blob_ext *i2s_config_ext;
struct skl_i2s_config_blob_legacy *i2s_config;
- struct nhlt_specific_cfg *fmt_cfg;
+ struct nhlt_fmt_cfg *fmt_cfg;
struct skl_clk_parent_src *parent;
u32 clkdiv, div_ratio;
u8 clk_src;
- fmt_cfg = &fmt->fmt_config[0].config;
- i2s_config_ext = (struct skl_i2s_config_blob_ext *)fmt_cfg->caps;
+ fmt_cfg = (struct nhlt_fmt_cfg *)fmt->fmt_config;
+ i2s_config_ext = (struct skl_i2s_config_blob_ext *)fmt_cfg->config.caps;
/* MCLK Divider Source Select and divider */
if (is_legacy_blob(i2s_config_ext->hdr.sig)) {
@@ -228,7 +241,7 @@ static void skl_get_mclk(struct skl_dev *skl, struct skl_ssp_clk *mclk,
return;
mclk[id].rate_cfg[0].rate = parent->rate/div_ratio;
- mclk[id].rate_cfg[0].config = &fmt->fmt_config[0];
+ mclk[id].rate_cfg[0].config = fmt_cfg;
mclk[id].parent_name = parent->name;
}
--
2.37.0
