[PATCH 4/4] clk: hisi: add stub clock register function

[Leo Yan]

Add stub clock register function, so can easily enable stub clock for
platforms.

Signed-off-by: Leo Yan <leo....@linaro.org>
---
 drivers/clk/hisilicon/clk.c | 29 +++++++++++++++++++++++++++++
 drivers/clk/hisilicon/clk.h | 12 ++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c
index 1e4c5c6..74ce813 100644
--- a/drivers/clk/hisilicon/clk.c
+++ b/drivers/clk/hisilicon/clk.c
@@ -244,3 +244,32 @@ void __init hisi_clk_register_gate_sep(struct 
hisi_gate_clock *clks,
                data->clk_data.clks[clks[i].id] = clk;
        }
 }
+
+void __init hisi_clk_register_stub(struct hisi_stub_clock *clks, int nums,
+                                  struct hisi_clock_data *data,
+                                  struct device_node *np)
+{
+       struct clk *clk;
+       int i;
+
+       for (i = 0; i < nums; i++) {
+               clk = hisi_register_stub_clk(np,
+                                            clks[i].id,
+                                            clks[i].name,
+                                            clks[i].parent_name,
+                                            clks[i].flags,
+                                            &hisi_clk_lock);
+               if (IS_ERR(clk)) {
+                       pr_err("%s: failed to register clock %s\n",
+                              __func__, clks[i].name);
+                       continue;
+               }
+
+               if (clks[i].alias)
+                       clk_register_clkdev(clk, clks[i].name, NULL);
+
+               data->clk_data.clks[clks[i].id] = clk;
+       }
+
+       return;
+}
diff --git a/drivers/clk/hisilicon/clk.h b/drivers/clk/hisilicon/clk.h
index e99184a..89ce9ad 100644
--- a/drivers/clk/hisilicon/clk.h
+++ b/drivers/clk/hisilicon/clk.h
@@ -90,6 +90,14 @@ struct hisi_gate_clock {
        const char              *alias;
 };
 
+struct hisi_stub_clock {
+       unsigned int            id;
+       char                    *name;
+       const char              *parent_name;
+       unsigned long           flags;
+       const char              *alias;
+};
+
 struct clk *hisi_register_clkgate_sep(struct device *, const char *,
                                const char *, unsigned long,
                                void __iomem *, u8,
@@ -113,4 +121,8 @@ void __init hisi_clk_register_gate(struct hisi_gate_clock *,
                                        int, struct hisi_clock_data *);
 void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *,
                                        int, struct hisi_clock_data *);
+void __init hisi_clk_register_stub(struct hisi_stub_clock *clks, int nums,
+                                  struct hisi_clock_data *data,
+                                  struct device_node *np);
+
 #endif /* __HISI_CLK_H */
-- 
1.9.1

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