ASoC: davinci-macsp: Optimize implicit BLCK sample-rate rule

There is no need to copy the list of all supported sample-rates.
Finding the supported endpoints within the current range is enough
(see snd_interval_list()).

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 18 insertions, 10 deletions

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index f8417072c66b..56da8ce1faf3 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -1023,27 +1023,35 @@ static int davinci_mcasp_hw_rule_rate(struct snd_pcm_hw_params *params,
                 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
         int sbits = params_width(params);
         int slots = rd->mcasp->tdm_slots;
-        unsigned int list[ARRAY_SIZE(davinci_mcasp_dai_rates)];
-        int i, count = 0;
+        struct snd_interval range;
+        int i;
+
+        snd_interval_any(&range);
+        range.empty = 1;
 
         for (i = 0; i < ARRAY_SIZE(davinci_mcasp_dai_rates); i++) {
-                if (ri->min <= davinci_mcasp_dai_rates[i] &&
-                    ri->max >= davinci_mcasp_dai_rates[i]) {
+                if (snd_interval_test(ri, davinci_mcasp_dai_rates[i])) {
                         uint bclk_freq = sbits*slots*
                                 davinci_mcasp_dai_rates[i];
                         int ppm;
 
                         davinci_mcasp_calc_clk_div(rd->mcasp, bclk_freq, &ppm);
-                        if (abs(ppm) < DAVINCI_MAX_RATE_ERROR_PPM)
-                                list[count++] = davinci_mcasp_dai_rates[i];
+                        if (abs(ppm) < DAVINCI_MAX_RATE_ERROR_PPM) {
+                                if (range.empty) {
+                                        range.min = davinci_mcasp_dai_rates[i];
+                                        range.empty = 0;
+                                }
+                                range.max = davinci_mcasp_dai_rates[i];
+                        }
                 }
         }
+
         dev_dbg(rd->mcasp->dev,
-                "%d frequencies (%d-%d) for %d sbits and %d tdm slots\n",
-                count, ri->min, ri->max, sbits, slots);
+                "Frequencies %d-%d -> %d-%d for %d sbits and %d tdm slots\n",
+                ri->min, ri->max, range.min, range.max, sbits, slots);
 
-        return snd_interval_list(hw_param_interval(params, rule->var),
-                                 count, list, 0);
+        return snd_interval_refine(hw_param_interval(params, rule->var),
+                                   &range);
 }
 
 static int davinci_mcasp_hw_rule_format(struct snd_pcm_hw_params *params,