OMAP2+: clockdomain: move header file from plat-omap to mach-omap2

The OMAP clockdomain code and data is all OMAP2+-specific.  This seems
unlikely to change any time soon.  Move plat-omap/include/plat/clockdomain.h
to mach-omap2/clockdomain.h.  The primary point of doing this is to remove
the temptation for unrelated upper-layer code to access clockdomain code
and data directly.

DSPBridge also uses the clockdomain headers for some reason, so,
modify it also. The DSPBridge code should not be including the
clockdomain headers; these should be removed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

13 files changed, 161 insertions, 12 deletions

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index cda2f1da2e1f..2a2f15213add 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -24,7 +24,7 @@
 #include <linux/bitops.h>
 
 #include <plat/clock.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/cpu.h>
 #include <plat/prcm.h>
 
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index e5605c21ad38..650bf685dd99 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -35,7 +35,7 @@
 
 #include <plat/clock.h>
 #include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/prcm.h>
 
 /* clkdm_list contains all registered struct clockdomains */
diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h
new file mode 100644
index 000000000000..372c64669868
--- /dev/null
+++ b/arch/arm/mach-omap2/clockdomain.h
@@ -0,0 +1,149 @@
+/*
+ * arch/arm/plat-omap/include/mach/clockdomain.h
+ *
+ * OMAP2/3 clockdomain framework functions
+ *
+ * Copyright (C) 2008 Texas Instruments, Inc.
+ * Copyright (C) 2008-2010 Nokia Corporation
+ *
+ * Paul Walmsley
+ *
+ * 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
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ARCH_ARM_MACH_OMAP2_CLOCKDOMAIN_H
+#define __ARCH_ARM_MACH_OMAP2_CLOCKDOMAIN_H
+
+#include <linux/init.h>
+
+#include <plat/powerdomain.h>
+#include <plat/clock.h>
+#include <plat/cpu.h>
+
+/* Clockdomain capability flags */
+#define CLKDM_CAN_FORCE_SLEEP			(1 << 0)
+#define CLKDM_CAN_FORCE_WAKEUP			(1 << 1)
+#define CLKDM_CAN_ENABLE_AUTO			(1 << 2)
+#define CLKDM_CAN_DISABLE_AUTO			(1 << 3)
+
+#define CLKDM_CAN_HWSUP		(CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO)
+#define CLKDM_CAN_SWSUP		(CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP)
+#define CLKDM_CAN_HWSUP_SWSUP	(CLKDM_CAN_SWSUP | CLKDM_CAN_HWSUP)
+
+/**
+ * struct clkdm_autodep - clkdm deps to add when entering/exiting hwsup mode
+ * @clkdm: clockdomain to add wkdep+sleepdep on - set name member only
+ * @omap_chip: OMAP chip types that this autodep is valid on
+ *
+ * A clockdomain that should have wkdeps and sleepdeps added when a
+ * clockdomain should stay active in hwsup mode; and conversely,
+ * removed when the clockdomain should be allowed to go inactive in
+ * hwsup mode.
+ *
+ * Autodeps are deprecated and should be removed after
+ * omap_hwmod-based fine-grained module idle control is added.
+ */
+struct clkdm_autodep {
+	union {
+		const char *name;
+		struct clockdomain *ptr;
+	} clkdm;
+	const struct omap_chip_id omap_chip;
+};
+
+/**
+ * struct clkdm_dep - encode dependencies between clockdomains
+ * @clkdm_name: clockdomain name
+ * @clkdm: pointer to the struct clockdomain of @clkdm_name
+ * @omap_chip: OMAP chip types that this dependency is valid on
+ * @wkdep_usecount: Number of wakeup dependencies causing this clkdm to wake
+ * @sleepdep_usecount: Number of sleep deps that could prevent clkdm from idle
+ *
+ * Statically defined.  @clkdm is resolved from @clkdm_name at runtime and
+ * should not be pre-initialized.
+ *
+ * XXX Should also include hardware (fixed) dependencies.
+ */
+struct clkdm_dep {
+	const char *clkdm_name;
+	struct clockdomain *clkdm;
+	atomic_t wkdep_usecount;
+	atomic_t sleepdep_usecount;
+	const struct omap_chip_id omap_chip;
+};
+
+/**
+ * struct clockdomain - OMAP clockdomain
+ * @name: clockdomain name
+ * @pwrdm: powerdomain containing this clockdomain
+ * @clktrctrl_reg: CLKSTCTRL reg for the given clock domain
+ * @clktrctrl_mask: CLKTRCTRL/AUTOSTATE field mask in CM_CLKSTCTRL reg
+ * @flags: Clockdomain capability flags
+ * @dep_bit: Bit shift of this clockdomain's PM_WKDEP/CM_SLEEPDEP bit
+ * @prcm_partition: (OMAP4 only) PRCM partition ID for this clkdm's registers
+ * @cm_inst: (OMAP4 only) CM instance register offset
+ * @clkdm_offs: (OMAP4 only) CM clockdomain register offset
+ * @wkdep_srcs: Clockdomains that can be told to wake this powerdomain up
+ * @sleepdep_srcs: Clockdomains that can be told to keep this clkdm from inact
+ * @omap_chip: OMAP chip types that this clockdomain is valid on
+ * @usecount: Usecount tracking
+ * @node: list_head to link all clockdomains together
+ *
+ * @prcm_partition should be a macro from mach-omap2/prcm44xx.h (OMAP4 only)
+ * @cm_inst should be a macro ending in _INST from the OMAP4 CM instance
+ *     definitions (OMAP4 only)
+ * @clkdm_offs should be a macro ending in _CDOFFS from the OMAP4 CM instance
+ *     definitions (OMAP4 only)
+ */
+struct clockdomain {
+	const char *name;
+	union {
+		const char *name;
+		struct powerdomain *ptr;
+	} pwrdm;
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+	const u16 clktrctrl_mask;
+#endif
+	const u8 flags;
+	const u8 dep_bit;
+	const u8 prcm_partition;
+	const s16 cm_inst;
+	const u16 clkdm_offs;
+	struct clkdm_dep *wkdep_srcs;
+	struct clkdm_dep *sleepdep_srcs;
+	const struct omap_chip_id omap_chip;
+	atomic_t usecount;
+	struct list_head node;
+};
+
+void clkdm_init(struct clockdomain **clkdms, struct clkdm_autodep *autodeps);
+struct clockdomain *clkdm_lookup(const char *name);
+
+int clkdm_for_each(int (*fn)(struct clockdomain *clkdm, void *user),
+			void *user);
+struct powerdomain *clkdm_get_pwrdm(struct clockdomain *clkdm);
+
+int clkdm_add_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
+int clkdm_del_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
+int clkdm_read_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
+int clkdm_clear_all_wkdeps(struct clockdomain *clkdm);
+int clkdm_add_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
+int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
+int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
+int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm);
+
+void omap2_clkdm_allow_idle(struct clockdomain *clkdm);
+void omap2_clkdm_deny_idle(struct clockdomain *clkdm);
+
+int omap2_clkdm_wakeup(struct clockdomain *clkdm);
+int omap2_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);
+
+extern void __init omap2_clockdomains_init(void);
+extern void __init omap44xx_clockdomains_init(void);
+
+#endif
diff --git a/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c b/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c
index 6e9ec49d637f..e4a7133ea3b3 100644
--- a/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c
+++ b/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c
@@ -35,7 +35,7 @@
 #include <linux/kernel.h>
 #include <linux/io.h>
 
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include "prm2xxx_3xxx.h"
 #include "cm2xxx_3xxx.h"
 #include "cm-regbits-24xx.h"
diff --git a/arch/arm/mach-omap2/clockdomains44xx_data.c b/arch/arm/mach-omap2/clockdomains44xx_data.c
index 2d3d1ef23814..51920fc7fc52 100644
--- a/arch/arm/mach-omap2/clockdomains44xx_data.c
+++ b/arch/arm/mach-omap2/clockdomains44xx_data.c
@@ -26,7 +26,7 @@
 #include <linux/kernel.h>
 #include <linux/io.h>
 
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include "cm1_44xx.h"
 #include "cm2_44xx.h"
 
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index 0fb619c52588..f518270b3e83 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -28,7 +28,7 @@
 #include <plat/prcm.h>
 #include <plat/irqs.h>
 #include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/serial.h>
 
 #include "pm.h"
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index ba766576e03e..545182d9faa6 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -41,7 +41,7 @@
 #include <plat/omap-pm.h>
 #include <plat/powerdomain.h>
 
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/omap_hwmod.h>
 #include <plat/multi.h>
 
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 1312ce2913a5..e1358ba51395 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -139,7 +139,7 @@
 
 #include <plat/common.h>
 #include <plat/cpu.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/powerdomain.h>
 #include <plat/clock.h>
 #include <plat/omap_hwmod.h>
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 1a4efb5e435a..3f989896a36c 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -30,7 +30,7 @@
 #include <plat/clock.h>
 #include <plat/board.h>
 #include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/dmtimer.h>
 
 #include "cm2xxx_3xxx.h"
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 6ec2ee12272a..24228e9dd496 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -19,7 +19,7 @@
 #include <plat/common.h>
 
 #include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 
 static struct omap_device_pm_latency *pm_lats;
 
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c
index bf0c36b239f9..f6aef7687b8a 100644
--- a/arch/arm/mach-omap2/pm24xx.c
+++ b/arch/arm/mach-omap2/pm24xx.c
@@ -51,7 +51,7 @@
 #include "control.h"
 
 #include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 
 #ifdef CONFIG_SUSPEND
 static suspend_state_t suspend_state = PM_SUSPEND_ON;
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 1ca6ef4c25b3..0fae3d6b76e8 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -31,7 +31,7 @@
 #include <linux/console.h>
 
 #include <plat/sram.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/powerdomain.h>
 #include <plat/serial.h>
 #include <plat/sdrc.h>
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index a76ad3f0ca65..7eb7ba49d6bf 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -27,7 +27,7 @@
 
 #include <plat/cpu.h>
 #include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "clockdomain.h"
 #include <plat/prcm.h>
 
 #include "pm.h"