blob: 58f812a723634366af42008fbe2fe207f3eb0fdc (
plain)
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
|
/*
* QE USB routines
*
* Copyright 2006 Freescale Semiconductor, Inc.
* Shlomi Gridish <gridish@freescale.com>
* Jerry Huang <Chang-Ming.Huang@freescale.com>
* Copyright (c) MontaVista Software, Inc. 2008.
* Anton Vorontsov <avorontsov@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/io.h>
#include <linux/fsl/immap_qe.h>
#include <linux/fsl/qe.h>
int qe_usb_clock_set(enum qe_clock clk, int rate)
{
struct qe_mux __iomem *mux = &qe_immr->qmx;
unsigned long flags;
u32 val;
switch (clk) {
case QE_CLK3:
val = QE_CMXGCR_USBCS_CLK3;
break;
case QE_CLK5:
val = QE_CMXGCR_USBCS_CLK5;
break;
case QE_CLK7:
val = QE_CMXGCR_USBCS_CLK7;
break;
case QE_CLK9:
val = QE_CMXGCR_USBCS_CLK9;
break;
case QE_CLK13:
val = QE_CMXGCR_USBCS_CLK13;
break;
case QE_CLK17:
val = QE_CMXGCR_USBCS_CLK17;
break;
case QE_CLK19:
val = QE_CMXGCR_USBCS_CLK19;
break;
case QE_CLK21:
val = QE_CMXGCR_USBCS_CLK21;
break;
case QE_BRG9:
val = QE_CMXGCR_USBCS_BRG9;
break;
case QE_BRG10:
val = QE_CMXGCR_USBCS_BRG10;
break;
default:
pr_err("%s: requested unknown clock %d\n", __func__, clk);
return -EINVAL;
}
if (qe_clock_is_brg(clk))
qe_setbrg(clk, rate, 1);
spin_lock_irqsave(&cmxgcr_lock, flags);
clrsetbits_be32(&mux->cmxgcr, QE_CMXGCR_USBCS, val);
spin_unlock_irqrestore(&cmxgcr_lock, flags);
return 0;
}
EXPORT_SYMBOL(qe_usb_clock_set);
|