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[12/19] clk: meson: add regmap helpers for parm

Message ID 20180131180945.18025-13-jbrunet@baylibre.com
State Superseded
Headers show
Series clk: meson: use regmap in clock controllers | expand

Commit Message

Jerome Brunet Jan. 31, 2018, 6:09 p.m. UTC 
Meson clock drivers are using struct parm to describe each field of the
clock provider. Providing helpers to access these field with regmap helps
keep drivers readable

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

---
 drivers/clk/meson/clkc.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

-- 
2.14.3
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Patch

diff --git a/drivers/clk/meson/clkc.h b/drivers/clk/meson/clkc.h
index aa2dfa0ff89f..8edc25297422 100644
--- 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;