[PATCH v2 03/26] clk: Add regmap support
Maxime Ripard
maxime.ripard at free-electrons.com
Thu Jan 14 07:24:46 PST 2016
From: Matthias Brugger <matthias.bgg at gmail.com>
Some devices like SoCs from Mediatek need to use the clock
through a regmap interface.
This patch adds regmap support for the simple multiplexer clock,
the divider clock and the clock gate code.
Signed-off-by: Matthias Brugger <matthias.bgg at gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
---
drivers/clk/Makefile | 1 +
drivers/clk/clk-divider.c | 68 +++++++++++++++++++++++++-------
drivers/clk/clk-gate.c | 54 +++++++++++++++++++------
drivers/clk/clk-io.c | 48 ++++++++++++++++++++++
drivers/clk/clk-io.h | 22 +++++++++++
drivers/clk/clk-mux.c | 94 +++++++++++++++++++++++++++++++++++++-------
include/linux/clk-provider.h | 54 +++++++++++++++++++++++--
7 files changed, 298 insertions(+), 43 deletions(-)
create mode 100644 drivers/clk/clk-io.c
create mode 100644 drivers/clk/clk-io.h
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 820714c72d36..31a888c0c182 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_COMMON_CLK) += clk-mux.o
obj-$(CONFIG_COMMON_CLK) += clk-composite.o
obj-$(CONFIG_COMMON_CLK) += clk-fractional-divider.o
obj-$(CONFIG_COMMON_CLK) += clk-gpio.o
+obj-$(CONFIG_COMMON_CLK) += clk-io.o
ifeq ($(CONFIG_OF), y)
obj-$(CONFIG_COMMON_CLK) += clk-conf.o
endif
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 3ace102a2a0a..1ddb353b3fff 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -18,6 +18,8 @@
#include <linux/string.h>
#include <linux/log2.h>
+#include "clk-io.h"
+
/*
* DOC: basic adjustable divider clock that cannot gate
*
@@ -142,7 +144,8 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
struct clk_divider *divider = to_clk_divider(hw);
unsigned int val;
- val = clk_readl(divider->reg) >> divider->shift;
+ val = clk_io_readl(hw, divider->reg, divider->regmap, divider->offset);
+ val >>= divider->shift;
val &= div_mask(divider->width);
return divider_recalc_rate(hw, parent_rate, val, divider->table,
@@ -354,7 +357,10 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
/* if read only, just return current value */
if (divider->flags & CLK_DIVIDER_READ_ONLY) {
- bestdiv = readl(divider->reg) >> divider->shift;
+ bestdiv = clk_io_readl(hw, divider->reg, divider->regmap,
+ divider->offset);
+
+ bestdiv >>= divider->shift;
bestdiv &= div_mask(divider->width);
bestdiv = _get_div(divider->table, bestdiv, divider->flags,
divider->width);
@@ -400,12 +406,16 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
if (divider->flags & CLK_DIVIDER_HIWORD_MASK) {
val = div_mask(divider->width) << (divider->shift + 16);
+ val |= value << divider->shift;
+ clk_io_writel(hw, divider->reg, divider->regmap,
+ divider->offset, val);
} else {
- val = clk_readl(divider->reg);
- val &= ~(div_mask(divider->width) << divider->shift);
+ u32 mask = div_mask(divider->width) << divider->shift;
+
+ val = value << divider->shift;
+ clk_io_update_bits(hw, divider->reg, divider->regmap,
+ divider->offset, mask, val);
}
- val |= value << divider->shift;
- clk_writel(val, divider->reg);
if (divider->lock)
spin_unlock_irqrestore(divider->lock, flags);
@@ -424,9 +434,9 @@ EXPORT_SYMBOL_GPL(clk_divider_ops);
static struct clk *_register_divider(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
- void __iomem *reg, u8 shift, u8 width,
- u8 clk_divider_flags, const struct clk_div_table *table,
- spinlock_t *lock)
+ void __iomem *reg, struct regmap *regmap, u32 offset,
+ u8 shift, u8 width, u8 clk_divider_flags,
+ const struct clk_div_table *table, spinlock_t *lock)
{
struct clk_divider *div;
struct clk *clk;
@@ -451,7 +461,12 @@ static struct clk *_register_divider(struct device *dev, const char *name,
init.num_parents = (parent_name ? 1 : 0);
/* struct clk_divider assignments */
- div->reg = reg;
+ if (flags & CLK_USE_REGMAP)
+ div->regmap = regmap;
+ else
+ div->reg = reg;
+
+ div->offset = offset;
div->shift = shift;
div->width = width;
div->flags = clk_divider_flags;
@@ -485,8 +500,8 @@ struct clk *clk_register_divider(struct device *dev, const char *name,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, spinlock_t *lock)
{
- return _register_divider(dev, name, parent_name, flags, reg, shift,
- width, clk_divider_flags, NULL, lock);
+ return _register_divider(dev, name, parent_name, flags, reg, NULL, 0,
+ shift, width, clk_divider_flags, NULL, lock);
}
EXPORT_SYMBOL_GPL(clk_register_divider);
@@ -510,8 +525,8 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
u8 clk_divider_flags, const struct clk_div_table *table,
spinlock_t *lock)
{
- return _register_divider(dev, name, parent_name, flags, reg, shift,
- width, clk_divider_flags, table, lock);
+ return _register_divider(dev, name, parent_name, flags, reg, NULL, 0,
+ shift, width, clk_divider_flags, table, lock);
}
EXPORT_SYMBOL_GPL(clk_register_divider_table);
@@ -530,3 +545,28 @@ void clk_unregister_divider(struct clk *clk)
kfree(div);
}
EXPORT_SYMBOL_GPL(clk_unregister_divider);
+
+struct clk *clk_regm_register_divider(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ struct regmap *regmap, u32 offset, u8 shift, u8 width,
+ u8 clk_divider_flags, spinlock_t *lock)
+{
+ flags |= CLK_USE_REGMAP;
+
+ return _register_divider(dev, name, parent_name, flags, NULL, regmap,
+ offset, shift, width, clk_divider_flags, NULL, lock);
+}
+EXPORT_SYMBOL_GPL(clk_regm_register_divider);
+
+struct clk *clk_regm_register_divider_table(struct device *dev,
+ const char *name, const char *parent_name, unsigned long flags,
+ struct regmap *regmap, u32 offset, u8 shift, u8 width,
+ u8 clk_divider_flags, const struct clk_div_table *table,
+ spinlock_t *lock)
+{
+ flags |= CLK_USE_REGMAP;
+
+ return _register_divider(dev, name, parent_name, flags, NULL, regmap,
+ offset, shift, width, clk_divider_flags, table, lock);
+}
+EXPORT_SYMBOL_GPL(clk_regm_register_divider_table);
diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index de0b322f5f58..38b558397631 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -16,6 +16,8 @@
#include <linux/err.h>
#include <linux/string.h>
+#include "clk-io.h"
+
/**
* DOC: basic gatable clock which can gate and ungate it's ouput
*
@@ -46,7 +48,7 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
struct clk_gate *gate = to_clk_gate(hw);
int set = gate->flags & CLK_GATE_SET_TO_DISABLE ? 1 : 0;
unsigned long uninitialized_var(flags);
- u32 reg;
+ u32 reg, mask;
set ^= enable;
@@ -59,16 +61,20 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
reg = BIT(gate->bit_idx + 16);
if (set)
reg |= BIT(gate->bit_idx);
- } else {
- reg = clk_readl(gate->reg);
+ clk_io_writel(hw, gate->reg, gate->regmap, gate->offset, reg);
+ } else {
if (set)
- reg |= BIT(gate->bit_idx);
+ reg = BIT(gate->bit_idx);
else
- reg &= ~BIT(gate->bit_idx);
+ reg = 0x0;
+
+ mask = BIT(gate->bit_idx);
+
+ clk_io_update_bits(hw, gate->reg, gate->regmap, gate->offset,
+ mask, reg);
}
- clk_writel(reg, gate->reg);
if (gate->lock)
spin_unlock_irqrestore(gate->lock, flags);
@@ -93,7 +99,7 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
u32 reg;
struct clk_gate *gate = to_clk_gate(hw);
- reg = clk_readl(gate->reg);
+ reg = clk_io_readl(hw, gate->reg, gate->regmap, gate->offset);
/* if a set bit disables this clk, flip it before masking */
if (gate->flags & CLK_GATE_SET_TO_DISABLE)
@@ -122,10 +128,10 @@ EXPORT_SYMBOL_GPL(clk_gate_ops);
* @clk_gate_flags: gate-specific flags for this clock
* @lock: shared register lock for this clock
*/
-struct clk *clk_register_gate(struct device *dev, const char *name,
+struct clk *__clk_register_gate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
- void __iomem *reg, u8 bit_idx,
- u8 clk_gate_flags, spinlock_t *lock)
+ void __iomem *reg, struct regmap *regmap, u32 offset,
+ u8 bit_idx, u8 clk_gate_flags, spinlock_t *lock)
{
struct clk_gate *gate;
struct clk *clk;
@@ -150,7 +156,12 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
init.num_parents = (parent_name ? 1 : 0);
/* struct clk_gate assignments */
- gate->reg = reg;
+ if (flags & CLK_USE_REGMAP)
+ gate->regmap = regmap;
+ else
+ gate->reg = reg;
+
+ gate->offset = offset;
gate->bit_idx = bit_idx;
gate->flags = clk_gate_flags;
gate->lock = lock;
@@ -163,6 +174,15 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
return clk;
}
+
+struct clk *clk_register_gate(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ void __iomem *reg, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock)
+{
+ return __clk_register_gate(dev, name, parent_name, flags,
+ reg, NULL, 0, bit_idx, clk_gate_flags, lock);
+}
EXPORT_SYMBOL_GPL(clk_register_gate);
void clk_unregister_gate(struct clk *clk)
@@ -180,3 +200,15 @@ void clk_unregister_gate(struct clk *clk)
kfree(gate);
}
EXPORT_SYMBOL_GPL(clk_unregister_gate);
+
+struct clk *clk_regm_register_gate(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ struct regmap *regmap, u32 offset, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock)
+{
+ flags |= CLK_USE_REGMAP;
+
+ return __clk_register_gate(dev, name, parent_name, flags,
+ NULL, regmap, offset, bit_idx, clk_gate_flags, lock);
+}
+EXPORT_SYMBOL_GPL(clk_regm_register_gate);
diff --git a/drivers/clk/clk-io.c b/drivers/clk/clk-io.c
new file mode 100644
index 000000000000..ceeb64e15ddb
--- /dev/null
+++ b/drivers/clk/clk-io.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2015 Matthias Brugger <matthias.bgg at gmail.com>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/clk-provider.h>
+
+void clk_io_writel(struct clk_hw *hw, void __iomem *reg, struct regmap *regmap,
+ u32 offset, u32 val)
+{
+ if (__clk_get_flags(hw->clk) & CLK_USE_REGMAP)
+ regmap_write(regmap, offset, val);
+ else
+ clk_writel(val, reg);
+}
+
+u32 clk_io_readl(struct clk_hw *hw, void __iomem *reg, struct regmap *regmap,
+ u32 offset)
+{
+ u32 val;
+
+ if (__clk_get_flags(hw->clk) & CLK_USE_REGMAP)
+ regmap_read(regmap, offset, &val);
+ else
+ val = clk_readl(reg);
+
+ return val;
+}
+
+int clk_io_update_bits(struct clk_hw *hw, void __iomem *reg,
+ struct regmap *regmap, u32 offset, u32 mask, u32 val)
+{
+ unsigned int tmp;
+
+ if (__clk_get_flags(hw->clk) & CLK_USE_REGMAP)
+ return regmap_update_bits(regmap, offset, mask, val);
+
+ tmp = clk_readl(reg);
+ tmp &= ~mask;
+ tmp |= val;
+ clk_writel(tmp, reg);
+
+ return 0;
+}
diff --git a/drivers/clk/clk-io.h b/drivers/clk/clk-io.h
new file mode 100644
index 000000000000..b5599ba02084
--- /dev/null
+++ b/drivers/clk/clk-io.h
@@ -0,0 +1,22 @@
+/*
+ * linux/drivers/clk/clk-io.h
+ *
+ * Copyright (C) 2015 Matthias Brugger <matthias.bgg at gmail.com>
+ *
+ * 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 __LINUX_CLK_IO_H
+#define __LINUX_CLK_IO_H
+
+#include <linux/clk-provider.h>
+
+void clk_io_writel(struct clk_hw *hw, void __iomem *reg, struct regmap *regmap,
+ u32 offset, u32 val);
+u32 clk_io_readl(struct clk_hw *hw, void __iomem *reg, struct regmap *regmap,
+ u32 offset);
+int clk_io_update_bits(struct clk_hw *hw, void __iomem *reg,
+ struct regmap *regmap, u32 offset, u32 mask, u32 val);
+
+#endif
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index 7129c86a79db..d3831eca8b56 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -16,6 +16,8 @@
#include <linux/io.h>
#include <linux/err.h>
+#include "clk-io.h"
+
/*
* DOC: basic adjustable multiplexer clock that cannot gate
*
@@ -41,7 +43,9 @@ static u8 clk_mux_get_parent(struct clk_hw *hw)
* OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so
* val = 0x4 really means "bit 2, index starts at bit 0"
*/
- val = clk_readl(mux->reg) >> mux->shift;
+ val = clk_io_readl(hw, mux->reg, mux->regmap, mux->offset);
+
+ val >>= mux->shift;
val &= mux->mask;
if (mux->table) {
@@ -70,6 +74,7 @@ static int clk_mux_set_parent(struct clk_hw *hw, u8 index)
struct clk_mux *mux = to_clk_mux(hw);
u32 val;
unsigned long flags = 0;
+ int ret = 0;
if (mux->table)
index = mux->table[index];
@@ -89,19 +94,22 @@ static int clk_mux_set_parent(struct clk_hw *hw, u8 index)
if (mux->flags & CLK_MUX_HIWORD_MASK) {
val = mux->mask << (mux->shift + 16);
+ val |= index << mux->shift;
+ clk_io_writel(hw, mux->reg, mux->regmap, mux->offset, val);
} else {
- val = clk_readl(mux->reg);
- val &= ~(mux->mask << mux->shift);
+ u32 mask = mux->mask << mux->shift;
+
+ val = index << mux->shift;
+ ret = clk_io_update_bits(hw, mux->reg, mux->regmap,
+ mux->offset, mask, val);
}
- val |= index << mux->shift;
- clk_writel(val, mux->reg);
if (mux->lock)
spin_unlock_irqrestore(mux->lock, flags);
else
__release(mux->lock);
- return 0;
+ return ret;
}
const struct clk_ops clk_mux_ops = {
@@ -116,10 +124,11 @@ const struct clk_ops clk_mux_ro_ops = {
};
EXPORT_SYMBOL_GPL(clk_mux_ro_ops);
-struct clk *clk_register_mux_table(struct device *dev, const char *name,
+struct clk *__clk_register_mux_table(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents,
unsigned long flags,
- void __iomem *reg, u8 shift, u32 mask,
+ void __iomem *reg, struct regmap *regmap,
+ u32 offset, u8 shift, u32 mask,
u8 clk_mux_flags, u32 *table, spinlock_t *lock)
{
struct clk_mux *mux;
@@ -152,7 +161,12 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
init.num_parents = num_parents;
/* struct clk_mux assignments */
- mux->reg = reg;
+ if (flags & CLK_USE_REGMAP)
+ mux->regmap = regmap;
+ else
+ mux->reg = reg;
+
+ mux->offset = offset;
mux->shift = shift;
mux->mask = mask;
mux->flags = clk_mux_flags;
@@ -167,19 +181,40 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
return clk;
}
+
+struct clk *clk_register_mux_table(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents,
+ unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
+ u8 clk_mux_flags, u32 *table, spinlock_t *lock)
+{
+ return __clk_register_mux_table(dev, name, parent_names, num_parents,
+ flags, reg, NULL, 0,
+ shift, mask, clk_mux_flags,
+ table, lock);
+}
EXPORT_SYMBOL_GPL(clk_register_mux_table);
-struct clk *clk_register_mux(struct device *dev, const char *name,
+struct clk *__clk_register_mux(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents,
- unsigned long flags,
- void __iomem *reg, u8 shift, u8 width,
+ unsigned long flags, void __iomem *reg, struct regmap *regmap,
+ u32 offset, u8 shift, u8 width,
u8 clk_mux_flags, spinlock_t *lock)
{
u32 mask = BIT(width) - 1;
- return clk_register_mux_table(dev, name, parent_names, num_parents,
- flags, reg, shift, mask, clk_mux_flags,
- NULL, lock);
+ return __clk_register_mux_table(dev, name, parent_names, num_parents,
+ flags, reg, regmap, offset, shift, mask,
+ clk_mux_flags, NULL, lock);
+}
+
+struct clk *clk_register_mux(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents,
+ unsigned long flags, void __iomem *reg, u8 shift, u8 width,
+ u8 clk_mux_flags, spinlock_t *lock)
+{
+ return __clk_register_mux(dev, name, parent_names, num_parents, flags,
+ reg, NULL, 0, shift, width,
+ clk_mux_flags, lock);
}
EXPORT_SYMBOL_GPL(clk_register_mux);
@@ -198,3 +233,32 @@ void clk_unregister_mux(struct clk *clk)
kfree(mux);
}
EXPORT_SYMBOL_GPL(clk_unregister_mux);
+
+struct clk *clk_regm_register_mux(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents,
+ unsigned long flags, struct regmap *regmap,
+ u32 offset, u8 shift, u8 width,
+ u8 clk_mux_flags, spinlock_t *lock)
+{
+ flags |= CLK_USE_REGMAP;
+
+ return __clk_register_mux(dev, name, parent_names, num_parents, flags,
+ NULL, regmap, offset, shift, width,
+ clk_mux_flags, lock);
+}
+EXPORT_SYMBOL_GPL(clk_regm_register_mux);
+
+struct clk *clk_regm_register_mux_table(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents,
+ unsigned long flags, struct regmap *regmap,
+ u32 offset, u8 shift, u32 mask,
+ u8 clk_mux_flags, u32 *table, spinlock_t *lock)
+{
+ flags |= CLK_USE_REGMAP;
+
+ return __clk_register_mux_table(dev, name, parent_names, num_parents,
+ flags, NULL, regmap, offset,
+ shift, mask, clk_mux_flags,
+ table, lock);
+}
+EXPORT_SYMBOL_GPL(clk_regm_register_mux_table);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index c56988ac63f7..0c55a37cf8f7 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -13,6 +13,7 @@
#include <linux/io.h>
#include <linux/of.h>
+#include <linux/regmap.h>
#ifdef CONFIG_COMMON_CLK
@@ -31,6 +32,7 @@
#define CLK_SET_RATE_NO_REPARENT BIT(7) /* don't re-parent on rate change */
#define CLK_GET_ACCURACY_NOCACHE BIT(8) /* do not use the cached clk accuracy */
#define CLK_RECALC_NEW_RATES BIT(9) /* recalc rates after notifications */
+#define CLK_USE_REGMAP BIT(10) /* uses regmap to access registers */
struct clk;
struct clk_hw;
@@ -290,6 +292,8 @@ void of_fixed_clk_setup(struct device_node *np);
*
* @hw: handle between common and hardware-specific interfaces
* @reg: register controlling gate
+ * @regmap: regmap used to control the gate
+ * @offset: offset inside the regmap
* @bit_idx: single bit controlling gate
* @flags: hardware-specific flags
* @lock: register lock
@@ -307,7 +311,11 @@ void of_fixed_clk_setup(struct device_node *np);
*/
struct clk_gate {
struct clk_hw hw;
- void __iomem *reg;
+ union {
+ void __iomem *reg;
+ struct regmap *regmap;
+ };
+ u32 offset;
u8 bit_idx;
u8 flags;
spinlock_t *lock;
@@ -323,6 +331,11 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
u8 clk_gate_flags, spinlock_t *lock);
void clk_unregister_gate(struct clk *clk);
+struct clk *clk_regm_register_gate(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ struct regmap *regmap, u32 offset, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock);
+
struct clk_div_table {
unsigned int val;
unsigned int div;
@@ -333,6 +346,8 @@ struct clk_div_table {
*
* @hw: handle between common and hardware-specific interfaces
* @reg: register containing the divider
+ * @regmap: regmap used to access the divider
+ * @offest: offset inside the regmap
* @shift: shift to the divider bit field
* @width: width of the divider bit field
* @table: array of value/divider pairs, last entry should have div = 0
@@ -367,7 +382,11 @@ struct clk_div_table {
*/
struct clk_divider {
struct clk_hw hw;
- void __iomem *reg;
+ union {
+ void __iomem *reg;
+ struct regmap *regmap;
+ };
+ u32 offset;
u8 shift;
u8 width;
u8 flags;
@@ -406,11 +425,24 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
spinlock_t *lock);
void clk_unregister_divider(struct clk *clk);
+struct clk *clk_regm_register_divider(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ struct regmap *regmap, u32 offset, u8 shift, u8 width,
+ u8 clk_divider_flags, spinlock_t *lock);
+
+struct clk *clk_regm_register_divider_table(struct device *dev,
+ const char *name, const char *parent_name, unsigned long flags,
+ struct regmap *regmap, u32 offset, u8 shift, u8 width,
+ u8 clk_divider_flags, const struct clk_div_table *table,
+ spinlock_t *lock);
+
/**
* struct clk_mux - multiplexer clock
*
* @hw: handle between common and hardware-specific interfaces
* @reg: register controlling multiplexer
+ * @regmap: regmap for controlling multiplexer
+ * @offset: offset inside the regmap
* @shift: shift to multiplexer bit field
* @width: width of mutliplexer bit field
* @flags: hardware-specific flags
@@ -431,8 +463,12 @@ void clk_unregister_divider(struct clk *clk);
*/
struct clk_mux {
struct clk_hw hw;
- void __iomem *reg;
+ union {
+ void __iomem *reg;
+ struct regmap *regmap;
+ };
u32 *table;
+ u32 offset;
u32 mask;
u8 shift;
u8 flags;
@@ -462,6 +498,18 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
void clk_unregister_mux(struct clk *clk);
+struct clk *clk_regm_register_mux_table(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents,
+ unsigned long flags, struct regmap *regmap,
+ u32 offset, u8 shift, u32 mask,
+ u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+
+struct clk *clk_regm_register_mux(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents,
+ unsigned long flags, struct regmap *regmap,
+ u32 offset, u8 shift, u8 width,
+ u8 clk_mux_flags, spinlock_t *lock);
+
void of_fixed_factor_clk_setup(struct device_node *node);
/**
--
2.6.4
More information about the linux-arm-kernel
mailing list