ARM: OMAP2/3: clockdomain/PRM/CM: move the low-level clockdomain functions into PRM/CM
Move the low-level SoC-specific clockdomain control functions into
cm*.c and prm*.c. For example, OMAP2xxx low-level clockdomain
functions go into cm2xxx.c. Then remove the unnecessary
clockdomain*xxx*.c files.
The objective is to centralize low-level CM and PRM register accesses
into the cm*.[ch] and prm*.[ch] files, and then to export an OMAP
SoC-independent API to higher-level OMAP power management code.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Russ Dill <Russ.Dill@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
diff --git a/arch/arm/mach-omap2/cminst44xx.c b/arch/arm/mach-omap2/cminst44xx.c
index 1894015..7f9a464 100644
--- a/arch/arm/mach-omap2/cminst44xx.c
+++ b/arch/arm/mach-omap2/cminst44xx.c
@@ -2,8 +2,9 @@
* OMAP4 CM instance functions
*
* Copyright (C) 2009 Nokia Corporation
- * Copyright (C) 2011 Texas Instruments, Inc.
+ * Copyright (C) 2008-2011 Texas Instruments, Inc.
* Paul Walmsley
+ * Rajendra Nayak <rnayak@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
@@ -22,6 +23,7 @@
#include "iomap.h"
#include "common.h"
+#include "clockdomain.h"
#include "cm.h"
#include "cm1_44xx.h"
#include "cm2_44xx.h"
@@ -343,3 +345,141 @@
v &= ~OMAP4430_MODULEMODE_MASK;
omap4_cminst_write_inst_reg(v, part, inst, clkctrl_offs);
}
+
+/*
+ * Clockdomain low-level functions
+ */
+
+static int omap4_clkdm_add_wkup_sleep_dep(struct clockdomain *clkdm1,
+ struct clockdomain *clkdm2)
+{
+ omap4_cminst_set_inst_reg_bits((1 << clkdm2->dep_bit),
+ clkdm1->prcm_partition,
+ clkdm1->cm_inst, clkdm1->clkdm_offs +
+ OMAP4_CM_STATICDEP);
+ return 0;
+}
+
+static int omap4_clkdm_del_wkup_sleep_dep(struct clockdomain *clkdm1,
+ struct clockdomain *clkdm2)
+{
+ omap4_cminst_clear_inst_reg_bits((1 << clkdm2->dep_bit),
+ clkdm1->prcm_partition,
+ clkdm1->cm_inst, clkdm1->clkdm_offs +
+ OMAP4_CM_STATICDEP);
+ return 0;
+}
+
+static int omap4_clkdm_read_wkup_sleep_dep(struct clockdomain *clkdm1,
+ struct clockdomain *clkdm2)
+{
+ return omap4_cminst_read_inst_reg_bits(clkdm1->prcm_partition,
+ clkdm1->cm_inst,
+ clkdm1->clkdm_offs +
+ OMAP4_CM_STATICDEP,
+ (1 << clkdm2->dep_bit));
+}
+
+static int omap4_clkdm_clear_all_wkup_sleep_deps(struct clockdomain *clkdm)
+{
+ struct clkdm_dep *cd;
+ u32 mask = 0;
+
+ if (!clkdm->prcm_partition)
+ return 0;
+
+ for (cd = clkdm->wkdep_srcs; cd && cd->clkdm_name; cd++) {
+ if (!cd->clkdm)
+ continue; /* only happens if data is erroneous */
+
+ mask |= 1 << cd->clkdm->dep_bit;
+ atomic_set(&cd->wkdep_usecount, 0);
+ }
+
+ omap4_cminst_clear_inst_reg_bits(mask, clkdm->prcm_partition,
+ clkdm->cm_inst, clkdm->clkdm_offs +
+ OMAP4_CM_STATICDEP);
+ return 0;
+}
+
+static int omap4_clkdm_sleep(struct clockdomain *clkdm)
+{
+ omap4_cminst_clkdm_enable_hwsup(clkdm->prcm_partition,
+ clkdm->cm_inst, clkdm->clkdm_offs);
+ return 0;
+}
+
+static int omap4_clkdm_wakeup(struct clockdomain *clkdm)
+{
+ omap4_cminst_clkdm_force_wakeup(clkdm->prcm_partition,
+ clkdm->cm_inst, clkdm->clkdm_offs);
+ return 0;
+}
+
+static void omap4_clkdm_allow_idle(struct clockdomain *clkdm)
+{
+ omap4_cminst_clkdm_enable_hwsup(clkdm->prcm_partition,
+ clkdm->cm_inst, clkdm->clkdm_offs);
+}
+
+static void omap4_clkdm_deny_idle(struct clockdomain *clkdm)
+{
+ if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
+ omap4_clkdm_wakeup(clkdm);
+ else
+ omap4_cminst_clkdm_disable_hwsup(clkdm->prcm_partition,
+ clkdm->cm_inst,
+ clkdm->clkdm_offs);
+}
+
+static int omap4_clkdm_clk_enable(struct clockdomain *clkdm)
+{
+ if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
+ return omap4_clkdm_wakeup(clkdm);
+
+ return 0;
+}
+
+static int omap4_clkdm_clk_disable(struct clockdomain *clkdm)
+{
+ bool hwsup = false;
+
+ if (!clkdm->prcm_partition)
+ return 0;
+
+ /*
+ * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
+ * more details on the unpleasant problem this is working
+ * around
+ */
+ if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING &&
+ !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) {
+ omap4_clkdm_allow_idle(clkdm);
+ return 0;
+ }
+
+ hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition,
+ clkdm->cm_inst, clkdm->clkdm_offs);
+
+ if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP))
+ omap4_clkdm_sleep(clkdm);
+
+ return 0;
+}
+
+struct clkdm_ops omap4_clkdm_operations = {
+ .clkdm_add_wkdep = omap4_clkdm_add_wkup_sleep_dep,
+ .clkdm_del_wkdep = omap4_clkdm_del_wkup_sleep_dep,
+ .clkdm_read_wkdep = omap4_clkdm_read_wkup_sleep_dep,
+ .clkdm_clear_all_wkdeps = omap4_clkdm_clear_all_wkup_sleep_deps,
+ .clkdm_add_sleepdep = omap4_clkdm_add_wkup_sleep_dep,
+ .clkdm_del_sleepdep = omap4_clkdm_del_wkup_sleep_dep,
+ .clkdm_read_sleepdep = omap4_clkdm_read_wkup_sleep_dep,
+ .clkdm_clear_all_sleepdeps = omap4_clkdm_clear_all_wkup_sleep_deps,
+ .clkdm_sleep = omap4_clkdm_sleep,
+ .clkdm_wakeup = omap4_clkdm_wakeup,
+ .clkdm_allow_idle = omap4_clkdm_allow_idle,
+ .clkdm_deny_idle = omap4_clkdm_deny_idle,
+ .clkdm_clk_enable = omap4_clkdm_clk_enable,
+ .clkdm_clk_disable = omap4_clkdm_clk_disable,
+};