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
|
/*
* OMAP3-specific clock framework functions
*
* Copyright (C) 2007-2008 Texas Instruments, Inc.
* Copyright (C) 2007-2010 Nokia Corporation
*
* Paul Walmsley
* Jouni Högander
*
* Parts of this code are based on code written by
* Richard Woodruff, Tony Lindgren, Tuukka Tikkanen, Karthik Dasu,
* Russell King
*
* 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.
*/
#undef DEBUG
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <plat/clock.h>
#include "clock.h"
#include "clock34xx.h"
#include "cm2xxx_3xxx.h"
#include "cm-regbits-34xx.h"
/**
* omap3430es2_clk_ssi_find_idlest - return CM_IDLEST info for SSI
* @clk: struct clk * being enabled
* @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
* @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
* @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
*
* The OMAP3430ES2 SSI target CM_IDLEST bit is at a different shift
* from the CM_{I,F}CLKEN bit. Pass back the correct info via
* @idlest_reg and @idlest_bit. No return value.
*/
static void omap3430es2_clk_ssi_find_idlest(struct clk *clk,
void __iomem **idlest_reg,
u8 *idlest_bit,
u8 *idlest_val)
{
u32 r;
r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
*idlest_reg = (__force void __iomem *)r;
*idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT;
*idlest_val = OMAP34XX_CM_IDLEST_VAL;
}
const struct clkops clkops_omap3430es2_ssi_wait = {
.enable = omap2_dflt_clk_enable,
.disable = omap2_dflt_clk_disable,
.find_idlest = omap3430es2_clk_ssi_find_idlest,
.find_companion = omap2_clk_dflt_find_companion,
};
/**
* omap3430es2_clk_dss_usbhost_find_idlest - CM_IDLEST info for DSS, USBHOST
* @clk: struct clk * being enabled
* @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
* @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
* @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
*
* Some OMAP modules on OMAP3 ES2+ chips have both initiator and
* target IDLEST bits. For our purposes, we are concerned with the
* target IDLEST bits, which exist at a different bit position than
* the *CLKEN bit position for these modules (DSS and USBHOST) (The
* default find_idlest code assumes that they are at the same
* position.) No return value.
*/
static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk *clk,
void __iomem **idlest_reg,
u8 *idlest_bit,
u8 *idlest_val)
{
u32 r;
r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
*idlest_reg = (__force void __iomem *)r;
/* USBHOST_IDLE has same shift */
*idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT;
*idlest_val = OMAP34XX_CM_IDLEST_VAL;
}
const struct clkops clkops_omap3430es2_dss_usbhost_wait = {
.enable = omap2_dflt_clk_enable,
.disable = omap2_dflt_clk_disable,
.find_idlest = omap3430es2_clk_dss_usbhost_find_idlest,
.find_companion = omap2_clk_dflt_find_companion,
};
/**
* omap3430es2_clk_hsotgusb_find_idlest - return CM_IDLEST info for HSOTGUSB
* @clk: struct clk * being enabled
* @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
* @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
* @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
*
* The OMAP3430ES2 HSOTGUSB target CM_IDLEST bit is at a different
* shift from the CM_{I,F}CLKEN bit. Pass back the correct info via
* @idlest_reg and @idlest_bit. No return value.
*/
static void omap3430es2_clk_hsotgusb_find_idlest(struct clk *clk,
void __iomem **idlest_reg,
u8 *idlest_bit,
u8 *idlest_val)
{
u32 r;
r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
*idlest_reg = (__force void __iomem *)r;
*idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT;
*idlest_val = OMAP34XX_CM_IDLEST_VAL;
}
const struct clkops clkops_omap3430es2_hsotgusb_wait = {
.enable = omap2_dflt_clk_enable,
.disable = omap2_dflt_clk_disable,
.find_idlest = omap3430es2_clk_hsotgusb_find_idlest,
.find_companion = omap2_clk_dflt_find_companion,
};
|
