1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* OMAP interface clock support
*
* Copyright (C) 2013 Texas Instruments, Inc.
*
* Tero Kristo <t-kristo@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk-provider.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk/ti.h>
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
static const struct clk_ops ti_interface_clk_ops = {
.init = &omap2_init_clk_clkdm,
.enable = &omap2_dflt_clk_enable,
.disable = &omap2_dflt_clk_disable,
.is_enabled = &omap2_dflt_clk_is_enabled,
};
static void __init _of_ti_interface_clk_setup(struct device_node *node,
const struct clk_hw_omap_ops *ops)
{
struct clk *clk;
struct clk_init_data init = { NULL };
struct clk_hw_omap *clk_hw;
const char *parent_name;
u32 val;
clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
if (!clk_hw)
return;
clk_hw->hw.init = &init;
clk_hw->ops = ops;
clk_hw->flags = MEMMAP_ADDRESSING;
clk_hw->enable_reg = ti_clk_get_reg_addr(node, 0);
if (!clk_hw->enable_reg)
goto cleanup;
if (!of_property_read_u32(node, "ti,bit-shift", &val))
clk_hw->enable_bit = val;
init.name = node->name;
init.ops = &ti_interface_clk_ops;
init.flags = 0;
parent_name = of_clk_get_parent_name(node, 0);
if (!parent_name) {
pr_err("%s must have a parent\n", node->name);
goto cleanup;
}
init.num_parents = 1;
init.parent_names = &parent_name;
clk = clk_register(NULL, &clk_hw->hw);
if (!IS_ERR(clk)) {
of_clk_add_provider(node, of_clk_src_simple_get, clk);
omap2_init_clk_hw_omap_clocks(clk);
return;
}
cleanup:
kfree(clk_hw);
}
static void __init of_ti_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node, &clkhwops_iclk_wait);
}
CLK_OF_DECLARE(ti_interface_clk, "ti,omap3-interface-clock",
of_ti_interface_clk_setup);
static void __init of_ti_no_wait_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node, &clkhwops_iclk);
}
CLK_OF_DECLARE(ti_no_wait_interface_clk, "ti,omap3-no-wait-interface-clock",
of_ti_no_wait_interface_clk_setup);
#ifdef CONFIG_ARCH_OMAP3
static void __init of_ti_hsotgusb_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node,
&clkhwops_omap3430es2_iclk_hsotgusb_wait);
}
CLK_OF_DECLARE(ti_hsotgusb_interface_clk, "ti,omap3-hsotgusb-interface-clock",
of_ti_hsotgusb_interface_clk_setup);
static void __init of_ti_dss_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node,
&clkhwops_omap3430es2_iclk_dss_usbhost_wait);
}
CLK_OF_DECLARE(ti_dss_interface_clk, "ti,omap3-dss-interface-clock",
of_ti_dss_interface_clk_setup);
static void __init of_ti_ssi_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node, &clkhwops_omap3430es2_iclk_ssi_wait);
}
CLK_OF_DECLARE(ti_ssi_interface_clk, "ti,omap3-ssi-interface-clock",
of_ti_ssi_interface_clk_setup);
static void __init of_ti_am35xx_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node, &clkhwops_am35xx_ipss_wait);
}
CLK_OF_DECLARE(ti_am35xx_interface_clk, "ti,am35xx-interface-clock",
of_ti_am35xx_interface_clk_setup);
#endif
#ifdef CONFIG_SOC_OMAP2430
static void __init of_ti_omap2430_interface_clk_setup(struct device_node *node)
{
_of_ti_interface_clk_setup(node, &clkhwops_omap2430_i2chs_wait);
}
CLK_OF_DECLARE(ti_omap2430_interface_clk, "ti,omap2430-interface-clock",
of_ti_omap2430_interface_clk_setup);
#endif
|
