1 /*
2 * OMAP3/OMAP4 Voltage Management Routines
3 *
4 * Author: Thara Gopinath <thara@ti.com>
5 *
6 * Copyright (C) 2007 Texas Instruments, Inc.
7 * Rajendra Nayak <rnayak@ti.com>
8 * Lesly A M <x0080970@ti.com>
9 *
10 * Copyright (C) 2008 Nokia Corporation
11 * Kalle Jokiniemi
12 *
13 * Copyright (C) 2010 Texas Instruments, Inc.
14 * Thara Gopinath <thara@ti.com>
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License version 2 as
18 * published by the Free Software Foundation.
19 */
20 #include <linux/kernel.h>
21 #include <linux/err.h>
22 #include <linux/init.h>
23
24 #include "common.h"
25 #include "soc.h"
26 #include "prm-regbits-44xx.h"
27 #include "prm44xx.h"
28 #include "prcm44xx.h"
29 #include "prminst44xx.h"
30 #include "voltage.h"
31 #include "omap_opp_data.h"
32 #include "vc.h"
33 #include "vp.h"
34
35 static const struct omap_vfsm_instance omap4_vdd_mpu_vfsm = {
36 .voltsetup_reg = OMAP4_PRM_VOLTSETUP_MPU_RET_SLEEP_OFFSET,
37 .voltsetup_off_reg = OMAP4_PRM_VOLTSETUP_MPU_OFF_OFFSET,
38 };
39
40 static const struct omap_vfsm_instance omap4_vdd_iva_vfsm = {
41 .voltsetup_reg = OMAP4_PRM_VOLTSETUP_IVA_RET_SLEEP_OFFSET,
42 .voltsetup_off_reg = OMAP4_PRM_VOLTSETUP_IVA_OFF_OFFSET,
43 };
44
45 static const struct omap_vfsm_instance omap4_vdd_core_vfsm = {
46 .voltsetup_reg = OMAP4_PRM_VOLTSETUP_CORE_RET_SLEEP_OFFSET,
47 .voltsetup_off_reg = OMAP4_PRM_VOLTSETUP_CORE_OFF_OFFSET,
48 };
49
50 static struct voltagedomain omap4_voltdm_mpu = {
51 .name = "mpu",
52 .scalable = true,
53 .read = omap4_prm_vcvp_read,
54 .write = omap4_prm_vcvp_write,
55 .rmw = omap4_prm_vcvp_rmw,
56 .vc = &omap4_vc_mpu,
57 .vfsm = &omap4_vdd_mpu_vfsm,
58 .vp = &omap4_vp_mpu,
59 };
60
61 static struct voltagedomain omap4_voltdm_iva = {
62 .name = "iva",
63 .scalable = true,
64 .read = omap4_prm_vcvp_read,
65 .write = omap4_prm_vcvp_write,
66 .rmw = omap4_prm_vcvp_rmw,
67 .vc = &omap4_vc_iva,
68 .vfsm = &omap4_vdd_iva_vfsm,
69 .vp = &omap4_vp_iva,
70 };
71
72 static struct voltagedomain omap4_voltdm_core = {
73 .name = "core",
74 .scalable = true,
75 .read = omap4_prm_vcvp_read,
76 .write = omap4_prm_vcvp_write,
77 .rmw = omap4_prm_vcvp_rmw,
78 .vc = &omap4_vc_core,
79 .vfsm = &omap4_vdd_core_vfsm,
80 .vp = &omap4_vp_core,
81 };
82
83 static struct voltagedomain omap4_voltdm_wkup = {
84 .name = "wakeup",
85 };
86
87 static struct voltagedomain *voltagedomains_omap4[] __initdata = {
88 &omap4_voltdm_mpu,
89 &omap4_voltdm_iva,
90 &omap4_voltdm_core,
91 &omap4_voltdm_wkup,
92 NULL,
93 };
94
95 static const char *const sys_clk_name __initconst = "sys_clkin_ck";
96
omap44xx_voltagedomains_init(void)97 void __init omap44xx_voltagedomains_init(void)
98 {
99 struct voltagedomain *voltdm;
100 int i;
101
102 /*
103 * XXX Will depend on the process, validation, and binning
104 * for the currently-running IC
105 */
106 #ifdef CONFIG_PM_OPP
107 if (cpu_is_omap443x()) {
108 omap4_voltdm_mpu.volt_data = omap443x_vdd_mpu_volt_data;
109 omap4_voltdm_iva.volt_data = omap443x_vdd_iva_volt_data;
110 omap4_voltdm_core.volt_data = omap443x_vdd_core_volt_data;
111 } else if (cpu_is_omap446x()) {
112 omap4_voltdm_mpu.volt_data = omap446x_vdd_mpu_volt_data;
113 omap4_voltdm_iva.volt_data = omap446x_vdd_iva_volt_data;
114 omap4_voltdm_core.volt_data = omap446x_vdd_core_volt_data;
115 }
116 #endif
117
118 omap4_voltdm_mpu.vp_param = &omap4_mpu_vp_data;
119 omap4_voltdm_iva.vp_param = &omap4_iva_vp_data;
120 omap4_voltdm_core.vp_param = &omap4_core_vp_data;
121
122 omap4_voltdm_mpu.vc_param = &omap4_mpu_vc_data;
123 omap4_voltdm_iva.vc_param = &omap4_iva_vc_data;
124 omap4_voltdm_core.vc_param = &omap4_core_vc_data;
125
126 for (i = 0; voltdm = voltagedomains_omap4[i], voltdm; i++)
127 voltdm->sys_clk.name = sys_clk_name;
128
129 voltdm_init(voltagedomains_omap4);
130 };
131