[PATCH v6 08/15] clk: starfive: Introduce idiv ops for inverted divider clocks

[Changhuang Liang]

Some StarFive clocks only advertise the divider and invert capabilities
(via JH71X0_CLK_INVERT, without ENABLE). Add the JH71X0_IDIV() macro
to declare such clocks, and jh71x0_clk_idiv_ops, which combines the
divider rate operations with get_phase/set_phase.

Signed-off-by: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>
---
 drivers/clk/starfive/clk-starfive-jh71x0.c | 13 ++++++++++++-
 drivers/clk/starfive/clk-starfive-jh71x0.h |  8 ++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/starfive/clk-starfive-jh71x0.c b/drivers/clk/starfive/clk-starfive-jh71x0.c
index c5ee82db3c92..224fcc3d08db 100644
--- a/drivers/clk/starfive/clk-starfive-jh71x0.c
+++ b/drivers/clk/starfive/clk-starfive-jh71x0.c
@@ -303,6 +303,15 @@ static const struct clk_ops jh71x0_clk_inv_ops = {
 	.debug_init = jh71x0_clk_debug_init,
 };
 
+static const struct clk_ops jh71x0_clk_idiv_ops = {
+	.get_phase = jh71x0_clk_get_phase,
+	.set_phase = jh71x0_clk_set_phase,
+	.recalc_rate = jh71x0_clk_recalc_rate,
+	.determine_rate = jh71x0_clk_determine_rate,
+	.set_rate = jh71x0_clk_set_rate,
+	.debug_init = jh71x0_clk_debug_init,
+};
+
 const struct clk_ops *starfive_jh71x0_clk_ops(u32 max)
 {
 	if (max & JH71X0_CLK_DIV_MASK) {
@@ -313,7 +322,9 @@ const struct clk_ops *starfive_jh71x0_clk_ops(u32 max)
 		}
 		if (max & JH71X0_CLK_ENABLE)
 			return &jh71x0_clk_gdiv_ops;
-		if (max == JH71X0_CLK_FRAC_MAX)
+		else if (max & JH71X0_CLK_INVERT)
+			return &jh71x0_clk_idiv_ops;
+		else if (max == JH71X0_CLK_FRAC_MAX)
 			return &jh71x0_clk_fdiv_ops;
 		return &jh71x0_clk_div_ops;
 	}
diff --git a/drivers/clk/starfive/clk-starfive-jh71x0.h b/drivers/clk/starfive/clk-starfive-jh71x0.h
index 2a1f0fb4cbb1..4cb3c2ef9525 100644
--- a/drivers/clk/starfive/clk-starfive-jh71x0.h
+++ b/drivers/clk/starfive/clk-starfive-jh71x0.h
@@ -104,6 +104,14 @@ struct jh71x0_clk_data {
 	.parents = { [0] = _parent },						\
 }
 
+#define JH71X0_IDIV(_idx, _name, _flags, _max, _parent)			\
+[_idx] = {									\
+	.name = _name,								\
+	.flags = _flags,							\
+	.max = JH71X0_CLK_INVERT | (_max),					\
+	.parents = { [0] = _parent },						\
+}
+
 struct jh71x0_clk {
 	struct clk_hw hw;
 	unsigned int idx;
-- 
2.25.1