ASoC: arizona: Add defines for FLL configuration constants

Improve readability by adding defines for some of the constants
associated with FLL configuration.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index d908046..3d4408d 100644 (file)
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -53,6 +53,12 @@
 #define ARIZONA_AIF_RX_ENABLES                  0x1A
 #define ARIZONA_AIF_FORCE_WRITE                 0x1B
 
+#define ARIZONA_FLL_MAX_FREF   13500000
+#define ARIZONA_FLL_MIN_FVCO   90000000
+#define ARIZONA_FLL_MAX_REFDIV 8
+#define ARIZONA_FLL_MIN_OUTDIV 2
+#define ARIZONA_FLL_MAX_OUTDIV 7
+
 #define arizona_fll_err(_fll, fmt, ...) \
        dev_err(_fll->arizona->dev, "FLL%d: " fmt, _fll->id, ##__VA_ARGS__)
 #define arizona_fll_warn(_fll, fmt, ...) \
@@ -1390,11 +1396,11 @@ static int arizona_calc_fll(struct arizona_fll *fll,
        /* Fref must be <=13.5MHz */
        div = 1;
        cfg->refdiv = 0;
-       while ((Fref / div) > 13500000) {
+       while ((Fref / div) > ARIZONA_FLL_MAX_FREF) {
                div *= 2;
                cfg->refdiv++;
 
-               if (div > 8) {
+               if (div > ARIZONA_FLL_MAX_REFDIV) {
                        arizona_fll_err(fll,
                                        "Can't scale %dMHz in to <=13.5MHz\n",
                                        Fref);
@@ -1406,10 +1412,10 @@ static int arizona_calc_fll(struct arizona_fll *fll,
        Fref /= div;
 
        /* Fvco should be over the targt; don't check the upper bound */
-       div = 2;
-       while (Fout * div < 90000000 * fll->vco_mult) {
+       div = ARIZONA_FLL_MIN_OUTDIV;
+       while (Fout * div < ARIZONA_FLL_MIN_FVCO * fll->vco_mult) {
                div++;
-               if (div > 7) {
+               if (div > ARIZONA_FLL_MAX_OUTDIV) {
                        arizona_fll_err(fll, "No FLL_OUTDIV for Fout=%uHz\n",
                                        Fout);
                        return -EINVAL;