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
|
/*
* Copyright (C) 2006 Atmel Corporation
*
* 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.
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/arch/init.h>
#include <asm/arch/sm.h>
struct at32_sm system_manager;
static int __init at32_sm_init(void)
{
struct resource *regs;
struct at32_sm *sm = &system_manager;
int ret = -ENXIO;
regs = platform_get_resource(&at32_sm_device, IORESOURCE_MEM, 0);
if (!regs)
goto fail;
spin_lock_init(&sm->lock);
sm->pdev = &at32_sm_device;
ret = -ENOMEM;
sm->regs = ioremap(regs->start, regs->end - regs->start + 1);
if (!sm->regs)
goto fail;
return 0;
fail:
printk(KERN_ERR "Failed to initialize System Manager: %d\n", ret);
return ret;
}
void __init setup_platform(void)
{
at32_sm_init();
at32_clock_init();
at32_portmux_init();
}
static int __init pdc_probe(struct platform_device *pdev)
{
struct clk *pclk, *hclk;
pclk = clk_get(&pdev->dev, "pclk");
if (IS_ERR(pclk)) {
dev_err(&pdev->dev, "no pclk defined\n");
return PTR_ERR(pclk);
}
hclk = clk_get(&pdev->dev, "hclk");
if (IS_ERR(hclk)) {
dev_err(&pdev->dev, "no hclk defined\n");
clk_put(pclk);
return PTR_ERR(hclk);
}
clk_enable(pclk);
clk_enable(hclk);
dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
return 0;
}
static struct platform_driver pdc_driver = {
.probe = pdc_probe,
.driver = {
.name = "pdc",
},
};
static int __init pdc_init(void)
{
return platform_driver_register(&pdc_driver);
}
arch_initcall(pdc_init);
|
