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
137
138
139
140
141
142
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016 Chen-Yu Tsai. All rights reserved.
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "ccu_common.h"
#include "ccu_gate.h"
#include "ccu_reset.h"
#include "ccu-sun9i-a80-usb.h"
static const struct clk_parent_data clk_parent_hosc[] = {
{ .fw_name = "hosc" },
};
static const struct clk_parent_data clk_parent_bus[] = {
{ .fw_name = "bus" },
};
static SUNXI_CCU_GATE_DATA(bus_hci0_clk, "bus-hci0", clk_parent_bus, 0x0, BIT(1), 0);
static SUNXI_CCU_GATE_DATA(usb_ohci0_clk, "usb-ohci0", clk_parent_hosc, 0x0, BIT(2), 0);
static SUNXI_CCU_GATE_DATA(bus_hci1_clk, "bus-hci1", clk_parent_bus, 0x0, BIT(3), 0);
static SUNXI_CCU_GATE_DATA(bus_hci2_clk, "bus-hci2", clk_parent_bus, 0x0, BIT(5), 0);
static SUNXI_CCU_GATE_DATA(usb_ohci2_clk, "usb-ohci2", clk_parent_hosc, 0x0, BIT(6), 0);
static SUNXI_CCU_GATE_DATA(usb0_phy_clk, "usb0-phy", clk_parent_hosc, 0x4, BIT(1), 0);
static SUNXI_CCU_GATE_DATA(usb1_hsic_clk, "usb1-hsic", clk_parent_hosc, 0x4, BIT(2), 0);
static SUNXI_CCU_GATE_DATA(usb1_phy_clk, "usb1-phy", clk_parent_hosc, 0x4, BIT(3), 0);
static SUNXI_CCU_GATE_DATA(usb2_hsic_clk, "usb2-hsic", clk_parent_hosc, 0x4, BIT(4), 0);
static SUNXI_CCU_GATE_DATA(usb2_phy_clk, "usb2-phy", clk_parent_hosc, 0x4, BIT(5), 0);
static SUNXI_CCU_GATE_DATA(usb_hsic_clk, "usb-hsic", clk_parent_hosc, 0x4, BIT(10), 0);
static struct ccu_common *sun9i_a80_usb_clks[] = {
&bus_hci0_clk.common,
&usb_ohci0_clk.common,
&bus_hci1_clk.common,
&bus_hci2_clk.common,
&usb_ohci2_clk.common,
&usb0_phy_clk.common,
&usb1_hsic_clk.common,
&usb1_phy_clk.common,
&usb2_hsic_clk.common,
&usb2_phy_clk.common,
&usb_hsic_clk.common,
};
static struct clk_hw_onecell_data sun9i_a80_usb_hw_clks = {
.hws = {
[CLK_BUS_HCI0] = &bus_hci0_clk.common.hw,
[CLK_USB_OHCI0] = &usb_ohci0_clk.common.hw,
[CLK_BUS_HCI1] = &bus_hci1_clk.common.hw,
[CLK_BUS_HCI2] = &bus_hci2_clk.common.hw,
[CLK_USB_OHCI2] = &usb_ohci2_clk.common.hw,
[CLK_USB0_PHY] = &usb0_phy_clk.common.hw,
[CLK_USB1_HSIC] = &usb1_hsic_clk.common.hw,
[CLK_USB1_PHY] = &usb1_phy_clk.common.hw,
[CLK_USB2_HSIC] = &usb2_hsic_clk.common.hw,
[CLK_USB2_PHY] = &usb2_phy_clk.common.hw,
[CLK_USB_HSIC] = &usb_hsic_clk.common.hw,
},
.num = CLK_NUMBER,
};
static struct ccu_reset_map sun9i_a80_usb_resets[] = {
[RST_USB0_HCI] = { 0x0, BIT(17) },
[RST_USB1_HCI] = { 0x0, BIT(18) },
[RST_USB2_HCI] = { 0x0, BIT(19) },
[RST_USB0_PHY] = { 0x4, BIT(17) },
[RST_USB1_HSIC] = { 0x4, BIT(18) },
[RST_USB1_PHY] = { 0x4, BIT(19) },
[RST_USB2_HSIC] = { 0x4, BIT(20) },
[RST_USB2_PHY] = { 0x4, BIT(21) },
};
static const struct sunxi_ccu_desc sun9i_a80_usb_clk_desc = {
.ccu_clks = sun9i_a80_usb_clks,
.num_ccu_clks = ARRAY_SIZE(sun9i_a80_usb_clks),
.hw_clks = &sun9i_a80_usb_hw_clks,
.resets = sun9i_a80_usb_resets,
.num_resets = ARRAY_SIZE(sun9i_a80_usb_resets),
};
static int sun9i_a80_usb_clk_probe(struct platform_device *pdev)
{
struct clk *bus_clk;
void __iomem *reg;
int ret;
reg = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(reg))
return PTR_ERR(reg);
bus_clk = devm_clk_get(&pdev->dev, "bus");
if (IS_ERR(bus_clk))
return dev_err_probe(&pdev->dev, PTR_ERR(bus_clk),
"Couldn't get bus clk\n");
/* The bus clock needs to be enabled for us to access the registers */
ret = clk_prepare_enable(bus_clk);
if (ret) {
dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
return ret;
}
ret = devm_sunxi_ccu_probe(&pdev->dev, reg, &sun9i_a80_usb_clk_desc);
if (ret)
goto err_disable_clk;
return 0;
err_disable_clk:
clk_disable_unprepare(bus_clk);
return ret;
}
static const struct of_device_id sun9i_a80_usb_clk_ids[] = {
{ .compatible = "allwinner,sun9i-a80-usb-clks" },
{ }
};
MODULE_DEVICE_TABLE(of, sun9i_a80_usb_clk_ids);
static struct platform_driver sun9i_a80_usb_clk_driver = {
.probe = sun9i_a80_usb_clk_probe,
.driver = {
.name = "sun9i-a80-usb-clks",
.of_match_table = sun9i_a80_usb_clk_ids,
},
};
module_platform_driver(sun9i_a80_usb_clk_driver);
MODULE_IMPORT_NS(SUNXI_CCU);
MODULE_LICENSE("GPL");
|
