blob: b224560fbd4acea89880fb34bbe351cc426e71b4 (
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* OMAP Adaptive Body-Bias structure and macro definitions
*
* Copyright (C) 2011 Texas Instruments, Inc.
* Mike Turquette <mturquette@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.
*/
#ifndef __ARCH_ARM_MACH_OMAP2_ABB_H
#define __ARCH_ARM_MACH_OMAP2_ABB_H
#include <linux/kernel.h>
#include "voltage.h"
/* NOMINAL_OPP bypasses the ABB ldo, FAST_OPP sets it to Forward Body-Bias */
#define OMAP_ABB_NOMINAL_OPP 0
#define OMAP_ABB_FAST_OPP 1
#define OMAP_ABB_NO_LDO (~0)
/* Time for the ABB ldo to settle after transition (in micro-seconds) */
#define ABB_TRANXDONE_TIMEOUT 50
/*
* struct omap_abb_ops - per-OMAP operations needed for ABB transition
*
* @check_tranxdone: return status of ldo transition from PRM_IRQSTATUS
* @clear_tranxdone: clear ABB transition status bit from PRM_IRQSTATUS
*/
struct omap_abb_ops {
u32 (*check_tranxdone)(u8 irq_id);
void (*clear_tranxdone)(u8 irq_id);
};
/*
* struct omap_abb_common - ABB data common to an OMAP family
*
* @opp_sel_mask: CTRL reg uses this to program next state of ldo
* @opp_change_mask: CTRL reg uses this to initiate ldo state change
* @sr2_wtcnt_value_mask: SETUP reg uses this to program ldo settling time
* @sr2en_mask: SETUP reg uses this to enable/disable ldo
* @active_fbb_sel_mask: SETUP reg uses this to enable/disable FBB operation
* @settling_time: number of micro-seconds it takes for ldo to transition
* @clock_cycles: settling_time is counted in multiples of clock cycles
* @ops: pointer to common ops for manipulating PRM_IRQSTATUS bits
*/
struct omap_abb_common {
u32 opp_sel_mask;
u32 opp_change_mask;
u32 sr2_wtcnt_value_mask;
u32 sr2en_mask;
u32 active_fbb_sel_mask;
unsigned long settling_time;
unsigned long clock_cycles;
const struct omap_abb_ops *ops;
};
/*
* struct omap_abb_instance - data for each instance of ABB ldo
*
* @setup_offs: PRM register offset for initial configuration of ABB ldo
* @ctrl_offs: PRM register offset for active programming of ABB ldo
* @prm_irq_id: IRQ handle used to resolve IRQSTATUS offset & masks
* @enabled: track whether ABB ldo is enabled or disabled
* @common: pointer to common data for all ABB ldo's
* @_opp_sel: internally track last programmed state of ABB ldo. DO NOT USE
*/
struct omap_abb_instance {
u8 setup_offs;
u8 ctrl_offs;
u8 prm_irq_id;
bool enabled;
const struct omap_abb_common *common;
u8 _opp_sel;
};
extern struct omap_abb_instance omap36xx_abb_mpu;
extern struct omap_abb_instance omap4_abb_mpu;
extern struct omap_abb_instance omap4_abb_iva;
extern struct omap_abb_instance omap5_abb_mpu;
extern struct omap_abb_instance omap5_abb_mm;
void omap_abb_init(struct voltagedomain *voltdm);
void omap_abb_enable(struct voltagedomain *voltdm);
void omap_abb_disble(struct voltagedomain *voltdm);
int omap_abb_set_opp(struct voltagedomain *voltdm, u8 opp_sel);
int omap_abb_pre_scale(struct voltagedomain *voltdm,
struct omap_volt_data *target_volt);
int omap_abb_post_scale(struct voltagedomain *voltdm,
struct omap_volt_data *target_volt);
#endif
|
