CLK: TI: Add DPLL clock support

The OMAP clock driver now supports DPLL clock type. This patch also
adds support for DT DPLL nodes.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

2 files changed, 1 insertions, 165 deletions

diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 82916cc82c92..b345f3ea8617 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -21,6 +21,7 @@
 
 #include <linux/clkdev.h>
 #include <linux/clk-provider.h>
+#include <linux/clk/ti.h>
 
 struct omap_clk {
         u16                             cpu;
@@ -37,7 +38,6 @@ struct omap_clk {
         }
 
 struct clockdomain;
-#define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)
 
 #define DEFINE_STRUCT_CLK(_name, _parent_array_name, _clkops_name)      \
         static struct clk _name = {                             \
@@ -178,141 +178,6 @@ struct clksel {
         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()
- * @last_rounded_m4xen: cache of the last M4X result of
- *                      omap4_dpll_regm4xen_round_rate()
- * @last_rounded_lpmode: cache of the last lpmode result of
- *                       omap4_dpll_lpmode_recalc()
- * @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
- * @lpmode_mask: mask of the DPLL low-power mode bitfield in @control_reg
- * @m4xen_mask: mask of the DPLL M4X multiplier bitfield in @control_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;
-        u8                      last_rounded_m4xen;
-        u8                      last_rounded_lpmode;
-        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;
-        u32                     lpmode_mask;
-        u32                     m4xen_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_hw_omap - OMAP struct clk
- * @node: list_head connecting this clock into the full clock list
- * @enable_reg: register to write to enable the clock (see @enable_bit)
- * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
- * @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.
- *
- */
-
-struct clk_hw_omap_ops;
-
-struct clk_hw_omap {
-        struct clk_hw           hw;
-        struct list_head        node;
-        unsigned long           fixed_rate;
-        u8                      fixed_div;
-        void __iomem            *enable_reg;
-        u8                      enable_bit;
-        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;
-        const struct clk_hw_omap_ops    *ops;
-};
-
 struct clk_hw_omap_ops {
         void                    (*find_idlest)(struct clk_hw_omap *oclk,
                                         void __iomem **idlest_reg,
@@ -348,36 +213,13 @@ unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
 #define OMAP4XXX_EN_DPLL_FRBYPASS               0x6
 #define OMAP4XXX_EN_DPLL_LOCKED                 0x7
 
-/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
-#define DPLL_LOW_POWER_STOP     0x1
-#define DPLL_LOW_POWER_BYPASS   0x5
-#define DPLL_LOCKED             0x7
-
-/* DPLL Type and DCO Selection Flags */
-#define DPLL_J_TYPE             0x1
-
-long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
-                        unsigned long *parent_rate);
-unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate);
-int omap3_noncore_dpll_enable(struct clk_hw *hw);
-void omap3_noncore_dpll_disable(struct clk_hw *hw);
-int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
-                                unsigned long parent_rate);
 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);
-unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
-                                    unsigned long parent_rate);
 int omap4_dpllmx_gatectrl_read(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);
-unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
-                                unsigned long parent_rate);
-long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
-                                    unsigned long target_rate,
-                                    unsigned long *parent_rate);
 
-void omap2_init_clk_clkdm(struct clk_hw *clk);
 void __init omap2_clk_disable_clkdm_control(void);
 
 /* clkt_clksel.c public functions */
@@ -396,7 +238,6 @@ int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val);
 extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
 extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
 
-u8 omap2_init_dpll_parent(struct clk_hw *hw);
 unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
 
 int omap2_dflt_clk_enable(struct clk_hw *hw);
@@ -408,7 +249,6 @@ void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
 void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
                                 void __iomem **idlest_reg,
                                 u8 *idlest_bit, u8 *idlest_val);
-void omap2_init_clk_hw_omap_clocks(struct clk *clk);
 int omap2_clk_enable_autoidle_all(void);
 int omap2_clk_disable_autoidle_all(void);
 int omap2_clk_allow_idle(struct clk *clk);
@@ -433,10 +273,8 @@ extern const struct clksel_rate gfx_l3_rates[];
 extern const struct clksel_rate dsp_ick_rates[];
 extern struct clk dummy_ck;
 
-extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
 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_omap4_dpllmx;
 extern const struct clk_hw_omap_ops clkhwops_iclk;
 extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
 extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait;
diff --git a/arch/arm/mach-omap2/clock3xxx.h b/arch/arm/mach-omap2/clock3xxx.h
index 8cd4b0a882ae..dab90e281aeb 100644
--- a/arch/arm/mach-omap2/clock3xxx.h
+++ b/arch/arm/mach-omap2/clock3xxx.h
@@ -9,8 +9,6 @@
 #define __ARCH_ARM_MACH_OMAP2_CLOCK3XXX_H
 
 int omap3xxx_clk_init(void);
-int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate,
-                                        unsigned long parent_rate);
 int omap3_core_dpll_m2_set_rate(struct clk_hw *clk, unsigned long rate,
                                         unsigned long parent_rate);
 void omap3_clk_lock_dpll5(void);