clk: meson: add regmap helpers for parm

Meson clock drivers are using struct parm to describe each field of the
clock provider. Providing helpers to access these fields with regmap
helps to keep drivers readable

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

diff --git a/drivers/clk/meson/clkc.h b/drivers/clk/meson/clkc.h
index aa2dfa0ff89f362492b3767f2afd2c0075ad44a2..8edc2529742225f9111854ffddd5d4efb6b03d66 100644 (file)
--- a/drivers/clk/meson/clkc.h
+++ b/drivers/clk/meson/clkc.h
@@ -38,6 +38,22 @@ struct parm {
        u8      width;
 };
 
+static inline unsigned int meson_parm_read(struct regmap *map, struct parm *p)
+{
+       unsigned int val;
+
+       regmap_read(map, p->reg_off, &val);
+       return PARM_GET(p->width, p->shift, val);
+}
+
+static inline void meson_parm_write(struct regmap *map, struct parm *p,
+                                   unsigned int val)
+{
+       regmap_update_bits(map, p->reg_off, SETPMASK(p->width, p->shift),
+                          val << p->shift);
+}
+
+
 struct pll_rate_table {
        unsigned long   rate;
        u16             m;