2 * OMAP2 and OMAP3 clockdomain control
4 * Copyright (C) 2008-2010 Texas Instruments, Inc.
5 * Copyright (C) 2008-2010 Nokia Corporation
7 * Derived from mach-omap2/clockdomain.c written by Paul Walmsley
8 * Rajendra Nayak <rnayak@ti.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/types.h>
16 #include <plat/prcm.h>
18 #include "prm2xxx_3xxx.h"
20 #include "cm2xxx_3xxx.h"
21 #include "cm-regbits-24xx.h"
22 #include "cm-regbits-34xx.h"
23 #include "prm-regbits-24xx.h"
24 #include "clockdomain.h"
26 static int omap2_clkdm_add_wkdep(struct clockdomain *clkdm1,
27 struct clockdomain *clkdm2)
29 omap2_prm_set_mod_reg_bits((1 << clkdm2->dep_bit),
30 clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP);
34 static int omap2_clkdm_del_wkdep(struct clockdomain *clkdm1,
35 struct clockdomain *clkdm2)
37 omap2_prm_clear_mod_reg_bits((1 << clkdm2->dep_bit),
38 clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP);
42 static int omap2_clkdm_read_wkdep(struct clockdomain *clkdm1,
43 struct clockdomain *clkdm2)
45 return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs,
46 PM_WKDEP, (1 << clkdm2->dep_bit));
49 static int omap2_clkdm_clear_all_wkdeps(struct clockdomain *clkdm)
54 for (cd = clkdm->wkdep_srcs; cd && cd->clkdm_name; cd++) {
55 if (!omap_chip_is(cd->omap_chip))
58 continue; /* only happens if data is erroneous */
60 /* PRM accesses are slow, so minimize them */
61 mask |= 1 << cd->clkdm->dep_bit;
62 atomic_set(&cd->wkdep_usecount, 0);
65 omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs,
70 static int omap3_clkdm_add_sleepdep(struct clockdomain *clkdm1,
71 struct clockdomain *clkdm2)
73 omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit),
74 clkdm1->pwrdm.ptr->prcm_offs,
75 OMAP3430_CM_SLEEPDEP);
79 static int omap3_clkdm_del_sleepdep(struct clockdomain *clkdm1,
80 struct clockdomain *clkdm2)
82 omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit),
83 clkdm1->pwrdm.ptr->prcm_offs,
84 OMAP3430_CM_SLEEPDEP);
88 static int omap3_clkdm_read_sleepdep(struct clockdomain *clkdm1,
89 struct clockdomain *clkdm2)
91 return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs,
92 OMAP3430_CM_SLEEPDEP, (1 << clkdm2->dep_bit));
95 static int omap3_clkdm_clear_all_sleepdeps(struct clockdomain *clkdm)
100 for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) {
101 if (!omap_chip_is(cd->omap_chip))
104 continue; /* only happens if data is erroneous */
106 /* PRM accesses are slow, so minimize them */
107 mask |= 1 << cd->clkdm->dep_bit;
108 atomic_set(&cd->sleepdep_usecount, 0);
110 omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs,
111 OMAP3430_CM_SLEEPDEP);
115 static int omap2_clkdm_sleep(struct clockdomain *clkdm)
117 omap2_cm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK,
118 clkdm->pwrdm.ptr->prcm_offs,
123 static int omap2_clkdm_wakeup(struct clockdomain *clkdm)
125 omap2_cm_clear_mod_reg_bits(OMAP24XX_FORCESTATE_MASK,
126 clkdm->pwrdm.ptr->prcm_offs,
131 static int omap3_clkdm_sleep(struct clockdomain *clkdm)
133 omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs,
134 clkdm->clktrctrl_mask);
138 static int omap3_clkdm_wakeup(struct clockdomain *clkdm)
140 omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs,
141 clkdm->clktrctrl_mask);
145 struct clkdm_ops omap2_clkdm_operations = {
146 .clkdm_add_wkdep = omap2_clkdm_add_wkdep,
147 .clkdm_del_wkdep = omap2_clkdm_del_wkdep,
148 .clkdm_read_wkdep = omap2_clkdm_read_wkdep,
149 .clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps,
150 .clkdm_sleep = omap2_clkdm_sleep,
151 .clkdm_wakeup = omap2_clkdm_wakeup,
154 struct clkdm_ops omap3_clkdm_operations = {
155 .clkdm_add_wkdep = omap2_clkdm_add_wkdep,
156 .clkdm_del_wkdep = omap2_clkdm_del_wkdep,
157 .clkdm_read_wkdep = omap2_clkdm_read_wkdep,
158 .clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps,
159 .clkdm_add_sleepdep = omap3_clkdm_add_sleepdep,
160 .clkdm_del_sleepdep = omap3_clkdm_del_sleepdep,
161 .clkdm_read_sleepdep = omap3_clkdm_read_sleepdep,
162 .clkdm_clear_all_sleepdeps = omap3_clkdm_clear_all_sleepdeps,
163 .clkdm_sleep = omap3_clkdm_sleep,
164 .clkdm_wakeup = omap3_clkdm_wakeup,