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18#include <linux/clk-provider.h>
19#include <linux/slab.h>
20#include <linux/of.h>
21#include <linux/of_address.h>
22#include <linux/clk/ti.h>
23#include "clock.h"
24
25#undef pr_fmt
26#define pr_fmt(fmt) "%s: " fmt, __func__
27
28static const struct clk_ops ti_interface_clk_ops = {
29 .init = &omap2_init_clk_clkdm,
30 .enable = &omap2_dflt_clk_enable,
31 .disable = &omap2_dflt_clk_disable,
32 .is_enabled = &omap2_dflt_clk_is_enabled,
33};
34
35static struct clk *_register_interface(struct device *dev, const char *name,
36 const char *parent_name,
37 struct clk_omap_reg *reg, u8 bit_idx,
38 const struct clk_hw_omap_ops *ops)
39{
40 struct clk_init_data init = { NULL };
41 struct clk_hw_omap *clk_hw;
42 struct clk *clk;
43
44 clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
45 if (!clk_hw)
46 return ERR_PTR(-ENOMEM);
47
48 clk_hw->hw.init = &init;
49 clk_hw->ops = ops;
50 memcpy(&clk_hw->enable_reg, reg, sizeof(*reg));
51 clk_hw->enable_bit = bit_idx;
52
53 init.name = name;
54 init.ops = &ti_interface_clk_ops;
55 init.flags = 0;
56
57 init.num_parents = 1;
58 init.parent_names = &parent_name;
59
60 clk = ti_clk_register(NULL, &clk_hw->hw, name);
61
62 if (IS_ERR(clk))
63 kfree(clk_hw);
64 else
65 omap2_init_clk_hw_omap_clocks(&clk_hw->hw);
66
67 return clk;
68}
69
70static void __init _of_ti_interface_clk_setup(struct device_node *node,
71 const struct clk_hw_omap_ops *ops)
72{
73 struct clk *clk;
74 const char *parent_name;
75 struct clk_omap_reg reg;
76 u8 enable_bit = 0;
77 u32 val;
78
79 if (ti_clk_get_reg_addr(node, 0, ®))
80 return;
81
82 if (!of_property_read_u32(node, "ti,bit-shift", &val))
83 enable_bit = val;
84
85 parent_name = of_clk_get_parent_name(node, 0);
86 if (!parent_name) {
87 pr_err("%s must have a parent\n", node->name);
88 return;
89 }
90
91 clk = _register_interface(NULL, node->name, parent_name, ®,
92 enable_bit, ops);
93
94 if (!IS_ERR(clk))
95 of_clk_add_provider(node, of_clk_src_simple_get, clk);
96}
97
98static void __init of_ti_interface_clk_setup(struct device_node *node)
99{
100 _of_ti_interface_clk_setup(node, &clkhwops_iclk_wait);
101}
102CLK_OF_DECLARE(ti_interface_clk, "ti,omap3-interface-clock",
103 of_ti_interface_clk_setup);
104
105static void __init of_ti_no_wait_interface_clk_setup(struct device_node *node)
106{
107 _of_ti_interface_clk_setup(node, &clkhwops_iclk);
108}
109CLK_OF_DECLARE(ti_no_wait_interface_clk, "ti,omap3-no-wait-interface-clock",
110 of_ti_no_wait_interface_clk_setup);
111
112#ifdef CONFIG_ARCH_OMAP3
113static void __init of_ti_hsotgusb_interface_clk_setup(struct device_node *node)
114{
115 _of_ti_interface_clk_setup(node,
116 &clkhwops_omap3430es2_iclk_hsotgusb_wait);
117}
118CLK_OF_DECLARE(ti_hsotgusb_interface_clk, "ti,omap3-hsotgusb-interface-clock",
119 of_ti_hsotgusb_interface_clk_setup);
120
121static void __init of_ti_dss_interface_clk_setup(struct device_node *node)
122{
123 _of_ti_interface_clk_setup(node,
124 &clkhwops_omap3430es2_iclk_dss_usbhost_wait);
125}
126CLK_OF_DECLARE(ti_dss_interface_clk, "ti,omap3-dss-interface-clock",
127 of_ti_dss_interface_clk_setup);
128
129static void __init of_ti_ssi_interface_clk_setup(struct device_node *node)
130{
131 _of_ti_interface_clk_setup(node, &clkhwops_omap3430es2_iclk_ssi_wait);
132}
133CLK_OF_DECLARE(ti_ssi_interface_clk, "ti,omap3-ssi-interface-clock",
134 of_ti_ssi_interface_clk_setup);
135
136static void __init of_ti_am35xx_interface_clk_setup(struct device_node *node)
137{
138 _of_ti_interface_clk_setup(node, &clkhwops_am35xx_ipss_wait);
139}
140CLK_OF_DECLARE(ti_am35xx_interface_clk, "ti,am35xx-interface-clock",
141 of_ti_am35xx_interface_clk_setup);
142#endif
143
144#ifdef CONFIG_SOC_OMAP2430
145static void __init of_ti_omap2430_interface_clk_setup(struct device_node *node)
146{
147 _of_ti_interface_clk_setup(node, &clkhwops_omap2430_i2chs_wait);
148}
149CLK_OF_DECLARE(ti_omap2430_interface_clk, "ti,omap2430-interface-clock",
150 of_ti_omap2430_interface_clk_setup);
151#endif
152
