Merge branch 'omap/headers4' into next/drivers

This avoids merge conflicts between the omap header changes and the gpmc
updates.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 316 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 35ec5f3d9a73..cfba1ffe5cc2 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -17,8 +17,323 @@
 #define __ARCH_ARM_MACH_OMAP2_CLOCK_H
 
 #include <linux/kernel.h>
+#include <linux/list.h>
+
+#include <linux/clkdev.h>
+
+struct omap_clk {
+        u16                             cpu;
+        struct clk_lookup               lk;
+};
+
+#define CLK(dev, con, ck, cp)           \
+        {                               \
+                 .cpu = cp,             \
+                .lk = {                 \
+                        .dev_id = dev,  \
+                        .con_id = con,  \
+                        .clk = ck,      \
+                },                      \
+        }
+
+/* Platform flags for the clkdev-OMAP integration code */
+#define CK_242X         (1 << 0)
+#define CK_243X         (1 << 1)        /* 243x, 253x */
+#define CK_3430ES1      (1 << 2)        /* 34xxES1 only */
+#define CK_3430ES2PLUS  (1 << 3)        /* 34xxES2, ES3, non-Sitara 35xx only */
+#define CK_AM35XX       (1 << 4)        /* Sitara AM35xx */
+#define CK_36XX         (1 << 5)        /* 36xx/37xx-specific clocks */
+#define CK_443X         (1 << 6)
+#define CK_TI816X       (1 << 7)
+#define CK_446X         (1 << 8)
+#define CK_AM33XX       (1 << 9)        /* AM33xx specific clocks */
+
+
+#define CK_34XX         (CK_3430ES1 | CK_3430ES2PLUS)
+#define CK_3XXX         (CK_34XX | CK_AM35XX | CK_36XX)
+
+struct module;
+struct clk;
+struct clockdomain;
+
+/* Temporary, needed during the common clock framework conversion */
+#define __clk_get_name(clk)     (clk->name)
+#define __clk_get_parent(clk)   (clk->parent)
+#define __clk_get_rate(clk)     (clk->rate)
+
+/**
+ * struct clkops - some clock function pointers
+ * @enable: fn ptr that enables the current clock in hardware
+ * @disable: fn ptr that enables the current clock in hardware
+ * @find_idlest: function returning the IDLEST register for the clock's IP blk
+ * @find_companion: function returning the "companion" clk reg for the clock
+ * @allow_idle: fn ptr that enables autoidle for the current clock in hardware
+ * @deny_idle: fn ptr that disables autoidle for the current clock in hardware
+ *
+ * A "companion" clk is an accompanying clock to the one being queried
+ * that must be enabled for the IP module connected to the clock to
+ * become accessible by the hardware.  Neither @find_idlest nor
+ * @find_companion should be needed; that information is IP
+ * block-specific; the hwmod code has been created to handle this, but
+ * until hwmod data is ready and drivers have been converted to use PM
+ * runtime calls in place of clk_enable()/clk_disable(), @find_idlest and
+ * @find_companion must, unfortunately, remain.
+ */
+struct clkops {
+        int                     (*enable)(struct clk *);
+        void                    (*disable)(struct clk *);
+        void                    (*find_idlest)(struct clk *, void __iomem **,
+                                               u8 *, u8 *);
+        void                    (*find_companion)(struct clk *, void __iomem **,
+                                                  u8 *);
+        void                    (*allow_idle)(struct clk *);
+        void                    (*deny_idle)(struct clk *);
+};
+
+/* 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;
+};
+
+/**
+ * struct dpll_data - DPLL registers and integration data
+ * @mult_div1_reg: register containing the DPLL M and N bitfields
+ * @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
+ * @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
+ * @clk_bypass: struct clk pointer to the clock's bypass clock input
+ * @clk_ref: struct clk pointer to the clock's reference clock input
+ * @control_reg: register containing the DPLL mode bitfield
+ * @enable_mask: mask of the DPLL mode bitfield in @control_reg
+ * @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
+ * @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
+ * @max_multiplier: maximum valid non-bypass multiplier value (actual)
+ * @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
+ * @min_divider: minimum valid non-bypass divider value (actual)
+ * @max_divider: maximum valid non-bypass divider value (actual)
+ * @modes: possible values of @enable_mask
+ * @autoidle_reg: register containing the DPLL autoidle mode bitfield
+ * @idlest_reg: register containing the DPLL idle status bitfield
+ * @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
+ * @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
+ * @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
+ * @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
+ * @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
+ * @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
+ * @flags: DPLL type/features (see below)
+ *
+ * Possible values for @flags:
+ * DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
+ *
+ * @freqsel_mask is only used on the OMAP34xx family and AM35xx.
+ *
+ * XXX Some DPLLs have multiple bypass inputs, so it's not technically
+ * correct to only have one @clk_bypass pointer.
+ *
+ * XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
+ * @last_rounded_n) should be separated from the runtime-fixed fields
+ * and placed into a different structure, so that the runtime-fixed data
+ * can be placed into read-only space.
+ */
+struct dpll_data {
+        void __iomem            *mult_div1_reg;
+        u32                     mult_mask;
+        u32                     div1_mask;
+        struct clk              *clk_bypass;
+        struct clk              *clk_ref;
+        void __iomem            *control_reg;
+        u32                     enable_mask;
+        unsigned long           last_rounded_rate;
+        u16                     last_rounded_m;
+        u16                     max_multiplier;
+        u8                      last_rounded_n;
+        u8                      min_divider;
+        u16                     max_divider;
+        u8                      modes;
+        void __iomem            *autoidle_reg;
+        void __iomem            *idlest_reg;
+        u32                     autoidle_mask;
+        u32                     freqsel_mask;
+        u32                     idlest_mask;
+        u32                     dco_mask;
+        u32                     sddiv_mask;
+        u8                      auto_recal_bit;
+        u8                      recal_en_bit;
+        u8                      recal_st_bit;
+        u8                      flags;
+};
+
+/*
+ * struct clk.flags possibilities
+ *
+ * XXX document the rest of the clock flags here
+ *
+ * CLOCK_CLKOUTX2: (OMAP4 only) DPLL CLKOUT and CLKOUTX2 GATE_CTRL
+ *     bits share the same register.  This flag allows the
+ *     omap4_dpllmx*() code to determine which GATE_CTRL bit field
+ *     should be used.  This is a temporary solution - a better approach
+ *     would be to associate clock type-specific data with the clock,
+ *     similar to the struct dpll_data approach.
+ */
+#define ENABLE_REG_32BIT        (1 << 0)        /* Use 32-bit access */
+#define CLOCK_IDLE_CONTROL      (1 << 1)
+#define CLOCK_NO_IDLE_PARENT    (1 << 2)
+#define ENABLE_ON_INIT          (1 << 3)        /* Enable upon framework init */
+#define INVERT_ENABLE           (1 << 4)        /* 0 enables, 1 disables */
+#define CLOCK_CLKOUTX2          (1 << 5)
+
+/**
+ * struct clk - OMAP struct clk
+ * @node: list_head connecting this clock into the full clock list
+ * @ops: struct clkops * for this clock
+ * @name: the name of the clock in the hardware (used in hwmod data and debug)
+ * @parent: pointer to this clock's parent struct clk
+ * @children: list_head connecting to the child clks' @sibling list_heads
+ * @sibling: list_head connecting this clk to its parent clk's @children
+ * @rate: current clock rate
+ * @enable_reg: register to write to enable the clock (see @enable_bit)
+ * @recalc: fn ptr that returns the clock's current rate
+ * @set_rate: fn ptr that can change the clock's current rate
+ * @round_rate: fn ptr that can round the clock's current rate
+ * @init: fn ptr to do clock-specific initialization
+ * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
+ * @usecount: number of users that have requested this clock to be enabled
+ * @fixed_div: when > 0, this clock's rate is its parent's rate / @fixed_div
+ * @flags: see "struct clk.flags possibilities" above
+ * @clksel_reg: for clksel clks, register va containing src/divisor select
+ * @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
+ * @clksel: for clksel clks, pointer to struct clksel for this clock
+ * @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
+ * @clkdm_name: clockdomain name that this clock is contained in
+ * @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
+ * @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
+ * @src_offset: bitshift for source selection bitfield (OMAP1 only)
+ *
+ * XXX @rate_offset, @src_offset should probably be removed and OMAP1
+ * clock code converted to use clksel.
+ *
+ * XXX @usecount is poorly named.  It should be "enable_count" or
+ * something similar.  "users" in the description refers to kernel
+ * code (core code or drivers) that have called clk_enable() and not
+ * yet called clk_disable(); the usecount of parent clocks is also
+ * incremented by the clock code when clk_enable() is called on child
+ * clocks and decremented by the clock code when clk_disable() is
+ * called on child clocks.
+ *
+ * XXX @clkdm, @usecount, @children, @sibling should be marked for
+ * internal use only.
+ *
+ * @children and @sibling are used to optimize parent-to-child clock
+ * tree traversals.  (child-to-parent traversals use @parent.)
+ *
+ * XXX The notion of the clock's current rate probably needs to be
+ * separated from the clock's target rate.
+ */
+struct clk {
+        struct list_head        node;
+        const struct clkops     *ops;
+        const char              *name;
+        struct clk              *parent;
+        struct list_head        children;
+        struct list_head        sibling;        /* node for children */
+        unsigned long           rate;
+        void __iomem            *enable_reg;
+        unsigned long           (*recalc)(struct clk *);
+        int                     (*set_rate)(struct clk *, unsigned long);
+        long                    (*round_rate)(struct clk *, unsigned long);
+        void                    (*init)(struct clk *);
+        u8                      enable_bit;
+        s8                      usecount;
+        u8                      fixed_div;
+        u8                      flags;
+        void __iomem            *clksel_reg;
+        u32                     clksel_mask;
+        const struct clksel     *clksel;
+        struct dpll_data        *dpll_data;
+        const char              *clkdm_name;
+        struct clockdomain      *clkdm;
+#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
+        struct dentry           *dent;  /* For visible tree hierarchy */
+#endif
+};
+
+struct clk_functions {
+        int             (*clk_enable)(struct clk *clk);
+        void            (*clk_disable)(struct clk *clk);
+        long            (*clk_round_rate)(struct clk *clk, unsigned long rate);
+        int             (*clk_set_rate)(struct clk *clk, unsigned long rate);
+        int             (*clk_set_parent)(struct clk *clk, struct clk *parent);
+        void            (*clk_allow_idle)(struct clk *clk);
+        void            (*clk_deny_idle)(struct clk *clk);
+        void            (*clk_disable_unused)(struct clk *clk);
+};
+
+extern int mpurate;
+
+extern int clk_init(struct clk_functions *custom_clocks);
+extern void clk_preinit(struct clk *clk);
+extern int clk_register(struct clk *clk);
+extern void clk_reparent(struct clk *child, struct clk *parent);
+extern void clk_unregister(struct clk *clk);
+extern void propagate_rate(struct clk *clk);
+extern void recalculate_root_clocks(void);
+extern unsigned long followparent_recalc(struct clk *clk);
+extern void clk_enable_init_clocks(void);
+unsigned long omap_fixed_divisor_recalc(struct clk *clk);
+extern struct clk *omap_clk_get_by_name(const char *name);
+extern int omap_clk_enable_autoidle_all(void);
+extern int omap_clk_disable_autoidle_all(void);
+
+extern const struct clkops clkops_null;
+
+extern struct clk dummy_ck;
 
-#include <plat/clock.h>
 
 /* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
 #define CORE_CLK_SRC_32K                0x0