Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 284 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-omap2/clock.h b/kernel/arch/arm/mach-omap2/clock.h
new file mode 100644
index 000000000..652ed0ab8
--- /dev/null
+++ b/kernel/arch/arm/mach-omap2/clock.h
@@ -0,0 +1,284 @@
+/*
+ *  linux/arch/arm/mach-omap2/clock.h
+ *
+ *  Copyright (C) 2005-2009 Texas Instruments, Inc.
+ *  Copyright (C) 2004-2011 Nokia Corporation
+ *
+ *  Contacts:
+ *  Richard Woodruff <r-woodruff2@ti.com>
+ *  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_CLOCK_H
+#define __ARCH_ARM_MACH_OMAP2_CLOCK_H
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/ti.h>
+
+struct omap_clk {
+	u16				cpu;
+	struct clk_lookup		lk;
+};
+
+#define CLK(dev, con, ck)		\
+	{				\
+		.lk = {			\
+			.dev_id = dev,	\
+			.con_id = con,	\
+			.clk = ck,	\
+		},			\
+	}
+
+struct clockdomain;
+
+#define DEFINE_STRUCT_CLK(_name, _parent_array_name, _clkops_name)	\
+	static struct clk_core _name##_core = {			\
+		.name = #_name,					\
+		.hw = &_name##_hw.hw,				\
+		.parent_names = _parent_array_name,		\
+		.num_parents = ARRAY_SIZE(_parent_array_name),	\
+		.ops = &_clkops_name,				\
+	};							\
+	static struct clk _name = {				\
+		.core = &_name##_core,				\
+	};
+
+#define DEFINE_STRUCT_CLK_FLAGS(_name, _parent_array_name,	\
+				_clkops_name, _flags)		\
+	static struct clk_core _name##_core = {			\
+		.name = #_name,					\
+		.hw = &_name##_hw.hw,				\
+		.parent_names = _parent_array_name,		\
+		.num_parents = ARRAY_SIZE(_parent_array_name),	\
+		.ops = &_clkops_name,				\
+		.flags = _flags,				\
+	};							\
+	static struct clk _name = {				\
+		.core = &_name##_core,				\
+	};
+
+#define DEFINE_STRUCT_CLK_HW_OMAP(_name, _clkdm_name)		\
+	static struct clk_hw_omap _name##_hw = {		\
+		.hw = {						\
+			.clk = &_name,				\
+		},						\
+		.clkdm_name = _clkdm_name,			\
+	};
+
+#define DEFINE_CLK_OMAP_MUX(_name, _clkdm_name, _clksel,	\
+			    _clksel_reg, _clksel_mask,		\
+			    _parent_names, _ops)		\
+	static struct clk _name;				\
+	static struct clk_hw_omap _name##_hw = {		\
+		.hw = {						\
+			.clk = &_name,				\
+		},						\
+		.clksel		= _clksel,			\
+		.clksel_reg	= _clksel_reg,			\
+		.clksel_mask	= _clksel_mask,			\
+		.clkdm_name	= _clkdm_name,			\
+	};							\
+	DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
+
+#define DEFINE_CLK_OMAP_MUX_GATE(_name, _clkdm_name, _clksel,	\
+				 _clksel_reg, _clksel_mask,	\
+				 _enable_reg, _enable_bit,	\
+				 _hwops, _parent_names, _ops)	\
+	static struct clk _name;				\
+	static struct clk_hw_omap _name##_hw = {		\
+		.hw = {						\
+			.clk = &_name,				\
+		},						\
+		.ops		= _hwops,			\
+		.enable_reg	= _enable_reg,			\
+		.enable_bit	= _enable_bit,			\
+		.clksel		= _clksel,			\
+		.clksel_reg	= _clksel_reg,			\
+		.clksel_mask	= _clksel_mask,			\
+		.clkdm_name	= _clkdm_name,			\
+	};							\
+	DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
+
+/* struct clksel_rate.flags possibilities */
+#define RATE_IN_242X		(1 << 0)
+#define RATE_IN_243X		(1 << 1)
+#define RATE_IN_3430ES1		(1 << 2)	/* 3430ES1 rates only */
+#define RATE_IN_3430ES2PLUS	(1 << 3)	/* 3430 ES >= 2 rates only */
+#define RATE_IN_36XX		(1 << 4)
+#define RATE_IN_4430		(1 << 5)
+#define RATE_IN_TI816X		(1 << 6)
+#define RATE_IN_4460		(1 << 7)
+#define RATE_IN_AM33XX		(1 << 8)
+#define RATE_IN_TI814X		(1 << 9)
+
+#define RATE_IN_24XX		(RATE_IN_242X | RATE_IN_243X)
+#define RATE_IN_34XX		(RATE_IN_3430ES1 | RATE_IN_3430ES2PLUS)
+#define RATE_IN_3XXX		(RATE_IN_34XX | RATE_IN_36XX)
+#define RATE_IN_44XX		(RATE_IN_4430 | RATE_IN_4460)
+
+/* RATE_IN_3430ES2PLUS_36XX includes 34xx/35xx with ES >=2, and all 36xx/37xx */
+#define RATE_IN_3430ES2PLUS_36XX	(RATE_IN_3430ES2PLUS | RATE_IN_36XX)
+
+
+/**
+ * struct clksel_rate - register bitfield values corresponding to clk divisors
+ * @val: register bitfield value (shifted to bit 0)
+ * @div: clock divisor corresponding to @val
+ * @flags: (see "struct clksel_rate.flags possibilities" above)
+ *
+ * @val should match the value of a read from struct clk.clksel_reg
+ * AND'ed with struct clk.clksel_mask, shifted right to bit 0.
+ *
+ * @div is the divisor that should be applied to the parent clock's rate
+ * to produce the current clock's rate.
+ */
+struct clksel_rate {
+	u32			val;
+	u8			div;
+	u16			flags;
+};
+
+/**
+ * struct clksel - available parent clocks, and a pointer to their divisors
+ * @parent: struct clk * to a possible parent clock
+ * @rates: available divisors for this parent clock
+ *
+ * A struct clksel is always associated with one or more struct clks
+ * and one or more struct clksel_rates.
+ */
+struct clksel {
+	struct clk		 *parent;
+	const struct clksel_rate *rates;
+};
+
+/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
+#define CORE_CLK_SRC_32K		0x0
+#define CORE_CLK_SRC_DPLL		0x1
+#define CORE_CLK_SRC_DPLL_X2		0x2
+
+/* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
+#define OMAP2XXX_EN_DPLL_LPBYPASS		0x1
+#define OMAP2XXX_EN_DPLL_FRBYPASS		0x2
+#define OMAP2XXX_EN_DPLL_LOCKED			0x3
+
+/* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
+#define OMAP3XXX_EN_DPLL_LPBYPASS		0x5
+#define OMAP3XXX_EN_DPLL_FRBYPASS		0x6
+#define OMAP3XXX_EN_DPLL_LOCKED			0x7
+
+/* OMAP4xxx CM_CLKMODE_DPLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
+#define OMAP4XXX_EN_DPLL_MNBYPASS		0x4
+#define OMAP4XXX_EN_DPLL_LPBYPASS		0x5
+#define OMAP4XXX_EN_DPLL_FRBYPASS		0x6
+#define OMAP4XXX_EN_DPLL_LOCKED			0x7
+
+u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk);
+void omap3_dpll_allow_idle(struct clk_hw_omap *clk);
+void omap3_dpll_deny_idle(struct clk_hw_omap *clk);
+void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk);
+void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk);
+
+void __init omap2_clk_disable_clkdm_control(void);
+
+/* clkt_clksel.c public functions */
+u32 omap2_clksel_round_rate_div(struct clk_hw_omap *clk,
+				unsigned long target_rate,
+				u32 *new_div);
+u8 omap2_clksel_find_parent_index(struct clk_hw *hw);
+unsigned long omap2_clksel_recalc(struct clk_hw *hw, unsigned long parent_rate);
+long omap2_clksel_round_rate(struct clk_hw *hw, unsigned long target_rate,
+				unsigned long *parent_rate);
+int omap2_clksel_set_rate(struct clk_hw *hw, unsigned long rate,
+				unsigned long parent_rate);
+int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val);
+
+/* clkt_iclk.c public functions */
+extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
+extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
+
+unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
+
+void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
+				   void __iomem **other_reg,
+				   u8 *other_bit);
+void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
+				void __iomem **idlest_reg,
+				u8 *idlest_bit, u8 *idlest_val);
+int omap2_clk_enable_autoidle_all(void);
+int omap2_clk_allow_idle(struct clk *clk);
+int omap2_clk_deny_idle(struct clk *clk);
+int omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name);
+void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
+			       const char *core_ck_name,
+			       const char *mpu_ck_name);
+
+u32 omap2_clk_readl(struct clk_hw_omap *clk, void __iomem *reg);
+void omap2_clk_writel(u32 val, struct clk_hw_omap *clk, void __iomem *reg);
+
+extern u16 cpu_mask;
+
+/*
+ * Clock features setup. Used instead of CPU type checks.
+ */
+struct ti_clk_features {
+	u32 flags;
+	long fint_min;
+	long fint_max;
+	long fint_band1_max;
+	long fint_band2_min;
+	u8 dpll_bypass_vals;
+	u8 cm_idlest_val;
+};
+
+#define TI_CLK_DPLL_HAS_FREQSEL		(1 << 0)
+#define TI_CLK_DPLL4_DENY_REPROGRAM	(1 << 1)
+
+extern struct ti_clk_features ti_clk_features;
+
+extern const struct clkops clkops_omap2_dflt_wait;
+extern const struct clkops clkops_omap2_dflt;
+
+extern struct clk_functions omap2_clk_functions;
+
+extern const struct clksel_rate gpt_32k_rates[];
+extern const struct clksel_rate gpt_sys_rates[];
+extern const struct clksel_rate gfx_l3_rates[];
+extern const struct clksel_rate dsp_ick_rates[];
+
+extern const struct clk_hw_omap_ops clkhwops_iclk_wait;
+extern const struct clk_hw_omap_ops clkhwops_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait;
+extern const struct clk_hw_omap_ops clkhwops_omap3430es2_hsotgusb_wait;
+extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait;
+extern const struct clk_hw_omap_ops clkhwops_apll54;
+extern const struct clk_hw_omap_ops clkhwops_apll96;
+
+/* clksel_rate blocks shared between OMAP44xx and AM33xx */
+extern const struct clksel_rate div_1_0_rates[];
+extern const struct clksel_rate div3_1to4_rates[];
+extern const struct clksel_rate div_1_1_rates[];
+extern const struct clksel_rate div_1_2_rates[];
+extern const struct clksel_rate div_1_3_rates[];
+extern const struct clksel_rate div_1_4_rates[];
+extern const struct clksel_rate div31_1to31_rates[];
+
+extern int omap2_clkops_enable_clkdm(struct clk_hw *hw);
+extern void omap2_clkops_disable_clkdm(struct clk_hw *hw);
+
+struct regmap;
+
+int __init omap2_clk_provider_init(struct device_node *np, int index,
+				   struct regmap *syscon, void __iomem *mem);
+void __init omap2_clk_legacy_provider_init(int index, void __iomem *mem);
+
+void __init ti_clk_init_features(void);
+#endif