Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

[linux.git] / sound / soc / codecs / arizona.c

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 33143fe1de0bdeaa0c6b04bc9bfd159b49bf658b..91785318b2834f325b2ebfb55476ce591b5e377b 100644 (file)
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1929,6 +1929,25 @@ static struct {
        { 1000000, 13500000, 0,  1 },
 };
 
+static const unsigned int pseudo_fref_max[ARIZONA_FLL_MAX_FRATIO] = {
+       13500000,
+        6144000,
+        6144000,
+        3072000,
+        3072000,
+        2822400,
+        2822400,
+        1536000,
+        1536000,
+        1536000,
+        1536000,
+        1536000,
+        1536000,
+        1536000,
+        1536000,
+         768000,
+};
+
 static struct {
        unsigned int min;
        unsigned int max;
@@ -2042,16 +2061,32 @@ static int arizona_calc_fratio(struct arizona_fll *fll,
        /* Adjust FRATIO/refdiv to avoid integer mode if possible */
        refdiv = cfg->refdiv;
 
+       arizona_fll_dbg(fll, "pseudo: initial ratio=%u fref=%u refdiv=%u\n",
+                       init_ratio, Fref, refdiv);
+
        while (div <= ARIZONA_FLL_MAX_REFDIV) {
                for (ratio = init_ratio; ratio <= ARIZONA_FLL_MAX_FRATIO;
                     ratio++) {
                        if ((ARIZONA_FLL_VCO_CORNER / 2) /
-                           (fll->vco_mult * ratio) < Fref)
+                           (fll->vco_mult * ratio) < Fref) {
+                               arizona_fll_dbg(fll, "pseudo: hit VCO corner\n");
                                break;
+                       }
+
+                       if (Fref > pseudo_fref_max[ratio - 1]) {
+                               arizona_fll_dbg(fll,
+                                       "pseudo: exceeded max fref(%u) for ratio=%u\n",
+                                       pseudo_fref_max[ratio - 1],
+                                       ratio);
+                               break;
+                       }
 
                        if (target % (ratio * Fref)) {
                                cfg->refdiv = refdiv;
                                cfg->fratio = ratio - 1;
+                               arizona_fll_dbg(fll,
+                                       "pseudo: found fref=%u refdiv=%d(%d) ratio=%d\n",
+                                       Fref, refdiv, div, ratio);
                                return ratio;
                        }
                }
@@ -2060,6 +2095,9 @@ static int arizona_calc_fratio(struct arizona_fll *fll,
                        if (target % (ratio * Fref)) {
                                cfg->refdiv = refdiv;
                                cfg->fratio = ratio - 1;
+                               arizona_fll_dbg(fll,
+                                       "pseudo: found fref=%u refdiv=%d(%d) ratio=%d\n",
+                                       Fref, refdiv, div, ratio);
                                return ratio;
                        }
                }
@@ -2068,6 +2106,9 @@ static int arizona_calc_fratio(struct arizona_fll *fll,
                Fref /= 2;
                refdiv++;
                init_ratio = arizona_find_fratio(Fref, NULL);
+               arizona_fll_dbg(fll,
+                               "pseudo: change fref=%u refdiv=%d(%d) ratio=%u\n",
+                               Fref, refdiv, div, init_ratio);
        }
 
        arizona_fll_warn(fll, "Falling back to integer mode operation\n");