[PATCH v4 3/5] clk: rockchip: add helper to register auxiliary GRFs

[Daniele Briguglio]

Add rockchip_clk_add_grf() as a helper to register an auxiliary GRF
into the clock provider's aux_grf_table. This encapsulates the
struct rockchip_aux_grf allocation and hashtable insertion, so SoC
clock drivers do not need to open-code it.

Suggested-by: Heiko Stuebner <heiko@xxxxxxxxx>
Signed-off-by: Daniele Briguglio <hello@xxxxxxxxxxxx>
---
 drivers/clk/rockchip/clk.c | 18 ++++++++++++++++++
 drivers/clk/rockchip/clk.h |  3 +++
 2 files changed, 21 insertions(+)

diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index 911e6b610618..ee8c79b938d3 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -429,6 +429,24 @@ void rockchip_clk_of_add_provider(struct device_node *np,
 }
 EXPORT_SYMBOL_GPL(rockchip_clk_of_add_provider);
 
+int rockchip_clk_add_grf(struct rockchip_clk_provider *ctx,
+			 struct regmap *grf,
+			 enum rockchip_grf_type type)
+{
+	struct rockchip_aux_grf *aux_grf;
+
+	aux_grf = kzalloc_obj(*aux_grf);
+	if (!aux_grf)
+		return -ENOMEM;
+
+	aux_grf->grf = grf;
+	aux_grf->type = type;
+	hash_add(ctx->aux_grf_table, &aux_grf->node, type);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rockchip_clk_add_grf);
+
 void rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
 				struct rockchip_pll_clock *list,
 				unsigned int nr_pll, int grf_lock_offset)
diff --git a/drivers/clk/rockchip/clk.h b/drivers/clk/rockchip/clk.h
index cf0f5f11c34b..9e3503e2ffc2 100644
--- a/drivers/clk/rockchip/clk.h
+++ b/drivers/clk/rockchip/clk.h
@@ -1329,6 +1329,9 @@ struct rockchip_clk_provider *rockchip_clk_init_early(struct device_node *np,
 void rockchip_clk_finalize(struct rockchip_clk_provider *ctx);
 void rockchip_clk_of_add_provider(struct device_node *np,
 				struct rockchip_clk_provider *ctx);
+int rockchip_clk_add_grf(struct rockchip_clk_provider *ctx,
+			 struct regmap *grf,
+			 enum rockchip_grf_type type);
 unsigned long rockchip_clk_find_max_clk_id(struct rockchip_clk_branch *list,
 					   unsigned int nr_clk);
 void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,

-- 
2.53.0