OMAP: clockdomain: Arch specific funcs for clkdm_clk_enable/disable

Define the following architecture specific funtions for omap2/3/4
.clkdm_clk_enable
.clkdm_clk_disable

Convert the platform-independent framework to call these functions.
Also rename the api's by removing the omap2_ preamble.
Hence call omap2_clkdm_k_enable as clkdm_clk_enable and
omap2_clkdm_clk_disable as clkdm_clk_disable.a

Remove unused functions (_enable/_disable_hwsup) and unsed
headers from clockdomain.c file.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/clock.c

@@ -264,7 +264,7 @@ void omap2_clk_disable(struct clk *clk)
 	clk->ops->disable(clk);
 
 	if (clk->clkdm)
-		omap2_clkdm_clk_disable(clk->clkdm, clk);
+		clkdm_clk_disable(clk->clkdm, clk);
 
 	if (clk->parent)
 		omap2_clk_disable(clk->parent);
@@ -304,7 +304,7 @@ int omap2_clk_enable(struct clk *clk)
 	}
 
 	if (clk->clkdm) {
-		ret = omap2_clkdm_clk_enable(clk->clkdm, clk);
+		ret = clkdm_clk_enable(clk->clkdm, clk);
 		if (ret) {
 			WARN(1, "clock: %s: could not enable clockdomain %s: "
 			     "%d\n", clk->name, clk->clkdm->name, ret);
@@ -322,7 +322,7 @@ int omap2_clk_enable(struct clk *clk)
 
 oce_err3:
 	if (clk->clkdm)
-		omap2_clkdm_clk_disable(clk->clkdm, clk);
+		clkdm_clk_disable(clk->clkdm, clk);
 oce_err2:
 	if (clk->parent)
 		omap2_clk_disable(clk->parent);

arch/arm/mach-omap2/clockdomain.c

@@ -26,17 +26,8 @@
 
 #include <linux/bitops.h>
 
-#include "prm2xxx_3xxx.h"
-#include "prm-regbits-24xx.h"
-#include "cm2xxx_3xxx.h"
-#include "cm-regbits-24xx.h"
-#include "cminst44xx.h"
-#include "prcm44xx.h"
-
 #include <plat/clock.h>
-#include "powerdomain.h"
 #include "clockdomain.h"
-#include <plat/prcm.h>
 
 /* clkdm_list contains all registered struct clockdomains */
 static LIST_HEAD(clkdm_list);
@@ -235,58 +226,6 @@ void _clkdm_del_autodeps(struct clockdomain *clkdm)
 	}
 }
 
-/**
- * _enable_hwsup - place a clockdomain into hardware-supervised idle
- * @clkdm: struct clockdomain *
- *
- * Place the clockdomain into hardware-supervised idle mode.  No return
- * value.
- *
- * XXX Should this return an error if the clockdomain does not support
- * hardware-supervised idle mode?
- */
-static void _enable_hwsup(struct clockdomain *clkdm)
-{
-	if (cpu_is_omap24xx())
-		omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
-					       clkdm->clktrctrl_mask);
-	else if (cpu_is_omap34xx())
-		omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
-					       clkdm->clktrctrl_mask);
-	else if (cpu_is_omap44xx())
-		return omap4_cminst_clkdm_enable_hwsup(clkdm->prcm_partition,
-						       clkdm->cm_inst,
-						       clkdm->clkdm_offs);
-	else
-		BUG();
-}
-
-/**
- * _disable_hwsup - place a clockdomain into software-supervised idle
- * @clkdm: struct clockdomain *
- *
- * Place the clockdomain @clkdm into software-supervised idle mode.
- * No return value.
- *
- * XXX Should this return an error if the clockdomain does not support
- * software-supervised idle mode?
- */
-static void _disable_hwsup(struct clockdomain *clkdm)
-{
-	if (cpu_is_omap24xx())
-		omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
-						clkdm->clktrctrl_mask);
-	else if (cpu_is_omap34xx())
-		omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
-						clkdm->clktrctrl_mask);
-	else if (cpu_is_omap44xx())
-		return omap4_cminst_clkdm_disable_hwsup(clkdm->prcm_partition,
-							clkdm->cm_inst,
-							clkdm->clkdm_offs);
-	else
-		BUG();
-}
-
 /**
  * _resolve_clkdm_deps() - resolve clkdm_names in @clkdm_deps to clkdms
  * @clkdm: clockdomain that we are resolving dependencies for
@@ -884,7 +823,7 @@ void clkdm_deny_idle(struct clockdomain *clkdm)
 /* Clockdomain-to-clock framework interface code */
 
 /**
- * omap2_clkdm_clk_enable - add an enabled downstream clock to this clkdm
+ * clkdm_clk_enable - add an enabled downstream clock to this clkdm
  * @clkdm: struct clockdomain *
  * @clk: struct clk * of the enabled downstream clock
  *
@@ -897,10 +836,8 @@ void clkdm_deny_idle(struct clockdomain *clkdm)
  * by on-chip processors.  Returns -EINVAL if passed null pointers;
  * returns 0 upon success or if the clockdomain is in hwsup idle mode.
  */
-int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
+int clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
 {
-	bool hwsup = false;
-
 	/*
 	 * XXX Rewrite this code to maintain a list of enabled
 	 * downstream clocks for debugging purposes?
@@ -909,6 +846,9 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
 	if (!clkdm || !clk)
 		return -EINVAL;
 
+	if (!arch_clkdm || !arch_clkdm->clkdm_clk_enable)
+		return -EINVAL;
+
 	if (atomic_inc_return(&clkdm->usecount) > 1)
 		return 0;
 
@@ -917,31 +857,7 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
 	pr_debug("clockdomain: clkdm %s: clk %s now enabled\n", clkdm->name,
 		 clk->name);
 
-	if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
-
-		if (!clkdm->clktrctrl_mask)
-			return 0;
-
-		hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
-						   clkdm->clktrctrl_mask);
-
-	} else if (cpu_is_omap44xx()) {
-
-		hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition,
-						       clkdm->cm_inst,
-						       clkdm->clkdm_offs);
-
-	}
-
-	if (hwsup) {
-		/* Disable HW transitions when we are changing deps */
-		_disable_hwsup(clkdm);
-		_clkdm_add_autodeps(clkdm);
-		_enable_hwsup(clkdm);
-	} else {
-		clkdm_wakeup(clkdm);
-	}
-
+	arch_clkdm->clkdm_clk_enable(clkdm);
 	pwrdm_wait_transition(clkdm->pwrdm.ptr);
 	pwrdm_clkdm_state_switch(clkdm);
 
@@ -949,7 +865,7 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
 }
 
 /**
- * omap2_clkdm_clk_disable - remove an enabled downstream clock from this clkdm
+ * clkdm_clk_disable - remove an enabled downstream clock from this clkdm
  * @clkdm: struct clockdomain *
  * @clk: struct clk * of the disabled downstream clock
  *
@@ -962,10 +878,8 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
  * is enabled; or returns 0 upon success or if the clockdomain is in
  * hwsup idle mode.
  */
-int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk)
+int clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk)
 {
-	bool hwsup = false;
-
 	/*
 	 * XXX Rewrite this code to maintain a list of enabled
 	 * downstream clocks for debugging purposes?
@@ -974,6 +888,9 @@ int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk)
 	if (!clkdm || !clk)
 		return -EINVAL;
 
+	if (!arch_clkdm || !arch_clkdm->clkdm_clk_disable)
+		return -EINVAL;
+
 #ifdef DEBUG
 	if (atomic_read(&clkdm->usecount) == 0) {
 		WARN_ON(1); /* underflow */
@@ -989,31 +906,7 @@ int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk)
 	pr_debug("clockdomain: clkdm %s: clk %s now disabled\n", clkdm->name,
 		 clk->name);
 
-	if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
-
-		if (!clkdm->clktrctrl_mask)
-			return 0;
-
-		hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
-						   clkdm->clktrctrl_mask);
-
-	} else if (cpu_is_omap44xx()) {
-
-		hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition,
-						       clkdm->cm_inst,
-						       clkdm->clkdm_offs);
-
-	}
-
-	if (hwsup) {
-		/* Disable HW transitions when we are changing deps */
-		_disable_hwsup(clkdm);
-		_clkdm_del_autodeps(clkdm);
-		_enable_hwsup(clkdm);
-	} else {
-		clkdm_sleep(clkdm);
-	}
-
+	arch_clkdm->clkdm_clk_disable(clkdm);
 	pwrdm_clkdm_state_switch(clkdm);
 
 	return 0;

arch/arm/mach-omap2/clockdomain.h

@@ -173,8 +173,8 @@ void clkdm_deny_idle(struct clockdomain *clkdm);
 int clkdm_wakeup(struct clockdomain *clkdm);
 int clkdm_sleep(struct clockdomain *clkdm);
 
-int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk);
-int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk);
+int clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk);
+int clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk);
 
 extern void __init omap2xxx_clockdomains_init(void);
 extern void __init omap3xxx_clockdomains_init(void);

arch/arm/mach-omap2/clockdomain2xxx_3xxx.c

@@ -146,6 +146,71 @@ static void omap2_clkdm_deny_idle(struct clockdomain *clkdm)
 		_clkdm_del_autodeps(clkdm);
 }
 
+static void _enable_hwsup(struct clockdomain *clkdm)
+{
+	if (cpu_is_omap24xx())
+		omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+					       clkdm->clktrctrl_mask);
+	else if (cpu_is_omap34xx())
+		omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+					       clkdm->clktrctrl_mask);
+}
+
+static void _disable_hwsup(struct clockdomain *clkdm)
+{
+	if (cpu_is_omap24xx())
+		omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+						clkdm->clktrctrl_mask);
+	else if (cpu_is_omap34xx())
+		omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+						clkdm->clktrctrl_mask);
+}
+
+
+static int omap2_clkdm_clk_enable(struct clockdomain *clkdm)
+{
+	bool hwsup = false;
+
+	if (!clkdm->clktrctrl_mask)
+		return 0;
+
+	hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+				clkdm->clktrctrl_mask);
+
+	if (hwsup) {
+		/* Disable HW transitions when we are changing deps */
+		_disable_hwsup(clkdm);
+		_clkdm_add_autodeps(clkdm);
+		_enable_hwsup(clkdm);
+	} else {
+		clkdm_wakeup(clkdm);
+	}
+
+	return 0;
+}
+
+static int omap2_clkdm_clk_disable(struct clockdomain *clkdm)
+{
+	bool hwsup = false;
+
+	if (!clkdm->clktrctrl_mask)
+		return 0;
+
+	hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
+				clkdm->clktrctrl_mask);
+
+	if (hwsup) {
+		/* Disable HW transitions when we are changing deps */
+		_disable_hwsup(clkdm);
+		_clkdm_del_autodeps(clkdm);
+		_enable_hwsup(clkdm);
+	} else {
+		clkdm_sleep(clkdm);
+	}
+
+	return 0;
+}
+
 static int omap3_clkdm_sleep(struct clockdomain *clkdm)
 {
 	omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs,
@@ -187,6 +252,8 @@ struct clkdm_ops omap2_clkdm_operations = {
 	.clkdm_wakeup		= omap2_clkdm_wakeup,
 	.clkdm_allow_idle	= omap2_clkdm_allow_idle,
 	.clkdm_deny_idle	= omap2_clkdm_deny_idle,
+	.clkdm_clk_enable	= omap2_clkdm_clk_enable,
+	.clkdm_clk_disable	= omap2_clkdm_clk_disable,
 };
 
 struct clkdm_ops omap3_clkdm_operations = {
@@ -202,4 +269,6 @@ struct clkdm_ops omap3_clkdm_operations = {
 	.clkdm_wakeup		= omap3_clkdm_wakeup,
 	.clkdm_allow_idle	= omap3_clkdm_allow_idle,
 	.clkdm_deny_idle	= omap3_clkdm_deny_idle,
+	.clkdm_clk_enable	= omap2_clkdm_clk_enable,
+	.clkdm_clk_disable	= omap2_clkdm_clk_disable,
 };

arch/arm/mach-omap2/clockdomain44xx.c

@@ -41,9 +41,37 @@ static void omap4_clkdm_deny_idle(struct clockdomain *clkdm)
 					clkdm->cm_inst, clkdm->clkdm_offs);
 }
 
+static int omap4_clkdm_clk_enable(struct clockdomain *clkdm)
+{
+	bool hwsup = false;
+
+	hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition,
+					clkdm->cm_inst, clkdm->clkdm_offs);
+
+	if (!hwsup)
+		clkdm_wakeup(clkdm);
+
+	return 0;
+}
+
+static int omap4_clkdm_clk_disable(struct clockdomain *clkdm)
+{
+	bool hwsup = false;
+
+	hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition,
+					clkdm->cm_inst, clkdm->clkdm_offs);
+
+	if (!hwsup)
+		clkdm_sleep(clkdm);
+
+	return 0;
+}
+
 struct clkdm_ops omap4_clkdm_operations = {
 	.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,
 };