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>

1 files changed, 88 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/cm2xxx.c b/arch/arm/mach-omap2/cm2xxx.c
index 051349370711..64165013daf9 100644
--- a/arch/arm/mach-omap2/cm2xxx.c
+++ b/arch/arm/mach-omap2/cm2xxx.c
@@ -2,8 +2,9 @@
  * OMAP2xxx CM module functions
  *
  * Copyright (C) 2009 Nokia Corporation
- * Copyright (C) 2012 Texas Instruments, Inc.
+ * Copyright (C) 2008-2010, 2012 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
@@ -20,9 +21,11 @@
 #include "soc.h"
 #include "iomap.h"
 #include "common.h"
+#include "prm2xxx.h"
 #include "cm.h"
 #include "cm2xxx.h"
 #include "cm-regbits-24xx.h"
+#include "clockdomain.h"
 
 /* CM_AUTOIDLE_PLL.AUTO_* bit values for DPLLs */
 #define DPLL_AUTOIDLE_DISABLE                           0x0
@@ -166,3 +169,87 @@ int omap2xxx_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
 
         return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY;
 }
+
+/* Clockdomain low-level functions */
+
+static void omap2xxx_clkdm_allow_idle(struct clockdomain *clkdm)
+{
+        if (atomic_read(&clkdm->usecount) > 0)
+                _clkdm_add_autodeps(clkdm);
+
+        omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                       clkdm->clktrctrl_mask);
+}
+
+static void omap2xxx_clkdm_deny_idle(struct clockdomain *clkdm)
+{
+        omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                        clkdm->clktrctrl_mask);
+
+        if (atomic_read(&clkdm->usecount) > 0)
+                _clkdm_del_autodeps(clkdm);
+}
+
+static int omap2xxx_clkdm_clk_enable(struct clockdomain *clkdm)
+{
+        bool hwsup = false;
+
+        if (!clkdm->clktrctrl_mask)
+                return 0;
+
+        hwsup = omap2xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                              clkdm->clktrctrl_mask);
+
+        if (hwsup) {
+                /* Disable HW transitions when we are changing deps */
+                omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                                clkdm->clktrctrl_mask);
+                _clkdm_add_autodeps(clkdm);
+                omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                               clkdm->clktrctrl_mask);
+        } else {
+                if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
+                        omap2xxx_clkdm_wakeup(clkdm);
+        }
+
+        return 0;
+}
+
+static int omap2xxx_clkdm_clk_disable(struct clockdomain *clkdm)
+{
+        bool hwsup = false;
+
+        if (!clkdm->clktrctrl_mask)
+                return 0;
+
+        hwsup = omap2xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                              clkdm->clktrctrl_mask);
+
+        if (hwsup) {
+                /* Disable HW transitions when we are changing deps */
+                omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                                clkdm->clktrctrl_mask);
+                _clkdm_del_autodeps(clkdm);
+                omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+                                               clkdm->clktrctrl_mask);
+        } else {
+                if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)
+                        omap2xxx_clkdm_sleep(clkdm);
+        }
+
+        return 0;
+}
+
+struct clkdm_ops omap2_clkdm_operations = {
+        .clkdm_add_wkdep        = omap2_clkdm_add_wkdep,
+        .clkdm_del_wkdep        = omap2_clkdm_del_wkdep,
+        .clkdm_read_wkdep       = omap2_clkdm_read_wkdep,
+        .clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps,
+        .clkdm_sleep            = omap2xxx_clkdm_sleep,
+        .clkdm_wakeup           = omap2xxx_clkdm_wakeup,
+        .clkdm_allow_idle       = omap2xxx_clkdm_allow_idle,
+        .clkdm_deny_idle        = omap2xxx_clkdm_deny_idle,
+        .clkdm_clk_enable       = omap2xxx_clkdm_clk_enable,
+        .clkdm_clk_disable      = omap2xxx_clkdm_clk_disable,
+};
+