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path: root/drivers/clk/clkdev.c
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Diffstat (limited to 'drivers/clk/clkdev.c')
-rw-r--r--drivers/clk/clkdev.c59
1 files changed, 27 insertions, 32 deletions
diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index 29a1ab7af4b8..043fd3633373 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -29,6 +29,20 @@ static DEFINE_MUTEX(clocks_mutex);
29 29
30#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK) 30#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
31 31
32static struct clk *__of_clk_get_by_clkspec(struct of_phandle_args *clkspec,
33 const char *dev_id, const char *con_id)
34{
35 struct clk *clk;
36
37 if (!clkspec)
38 return ERR_PTR(-EINVAL);
39
40 of_clk_lock();
41 clk = __of_clk_get_from_provider(clkspec, dev_id, con_id);
42 of_clk_unlock();
43 return clk;
44}
45
32/** 46/**
33 * of_clk_get_by_clkspec() - Lookup a clock form a clock provider 47 * of_clk_get_by_clkspec() - Lookup a clock form a clock provider
34 * @clkspec: pointer to a clock specifier data structure 48 * @clkspec: pointer to a clock specifier data structure
@@ -39,22 +53,11 @@ static DEFINE_MUTEX(clocks_mutex);
39 */ 53 */
40struct clk *of_clk_get_by_clkspec(struct of_phandle_args *clkspec) 54struct clk *of_clk_get_by_clkspec(struct of_phandle_args *clkspec)
41{ 55{
42 struct clk *clk; 56 return __of_clk_get_by_clkspec(clkspec, NULL, __func__);
43
44 if (!clkspec)
45 return ERR_PTR(-EINVAL);
46
47 of_clk_lock();
48 clk = __of_clk_get_from_provider(clkspec);
49
50 if (!IS_ERR(clk) && !__clk_get(clk))
51 clk = ERR_PTR(-ENOENT);
52
53 of_clk_unlock();
54 return clk;
55} 57}
56 58
57static struct clk *__of_clk_get(struct device_node *np, int index) 59static struct clk *__of_clk_get(struct device_node *np, int index,
60 const char *dev_id, const char *con_id)
58{ 61{
59 struct of_phandle_args clkspec; 62 struct of_phandle_args clkspec;
60 struct clk *clk; 63 struct clk *clk;
@@ -68,7 +71,7 @@ static struct clk *__of_clk_get(struct device_node *np, int index)
68 if (rc) 71 if (rc)
69 return ERR_PTR(rc); 72 return ERR_PTR(rc);
70 73
71 clk = of_clk_get_by_clkspec(&clkspec); 74 clk = __of_clk_get_by_clkspec(&clkspec, dev_id, con_id);
72 of_node_put(clkspec.np); 75 of_node_put(clkspec.np);
73 76
74 return clk; 77 return clk;
@@ -76,12 +79,7 @@ static struct clk *__of_clk_get(struct device_node *np, int index)
76 79
77struct clk *of_clk_get(struct device_node *np, int index) 80struct clk *of_clk_get(struct device_node *np, int index)
78{ 81{
79 struct clk *clk = __of_clk_get(np, index); 82 return __of_clk_get(np, index, np->full_name, NULL);
80
81 if (!IS_ERR(clk))
82 clk = __clk_create_clk(__clk_get_hw(clk), np->full_name, NULL);
83
84 return clk;
85} 83}
86EXPORT_SYMBOL(of_clk_get); 84EXPORT_SYMBOL(of_clk_get);
87 85
@@ -102,12 +100,10 @@ static struct clk *__of_clk_get_by_name(struct device_node *np,
102 */ 100 */
103 if (name) 101 if (name)
104 index = of_property_match_string(np, "clock-names", name); 102 index = of_property_match_string(np, "clock-names", name);
105 clk = __of_clk_get(np, index); 103 clk = __of_clk_get(np, index, dev_id, name);
106 if (!IS_ERR(clk)) { 104 if (!IS_ERR(clk)) {
107 clk = __clk_create_clk(__clk_get_hw(clk), dev_id, name);
108 break; 105 break;
109 } 106 } else if (name && index >= 0) {
110 else if (name && index >= 0) {
111 if (PTR_ERR(clk) != -EPROBE_DEFER) 107 if (PTR_ERR(clk) != -EPROBE_DEFER)
112 pr_err("ERROR: could not get clock %s:%s(%i)\n", 108 pr_err("ERROR: could not get clock %s:%s(%i)\n",
113 np->full_name, name ? name : "", index); 109 np->full_name, name ? name : "", index);
@@ -209,17 +205,16 @@ struct clk *clk_get_sys(const char *dev_id, const char *con_id)
209 if (!cl) 205 if (!cl)
210 goto out; 206 goto out;
211 207
212 if (!__clk_get(cl->clk)) { 208 clk = __clk_create_clk(__clk_get_hw(cl->clk), dev_id, con_id);
209 if (IS_ERR(clk))
210 goto out;
211
212 if (!__clk_get(clk)) {
213 __clk_free_clk(clk);
213 cl = NULL; 214 cl = NULL;
214 goto out; 215 goto out;
215 } 216 }
216 217
217#if defined(CONFIG_COMMON_CLK)
218 clk = __clk_create_clk(__clk_get_hw(cl->clk), dev_id, con_id);
219#else
220 clk = cl->clk;
221#endif
222
223out: 218out:
224 mutex_unlock(&clocks_mutex); 219 mutex_unlock(&clocks_mutex);
225 220