[PATCH 03/26] ARM: OMAP4: clock: Convert to common clk
Paul Walmsley
paul at pwsan.com
Mon Nov 12 21:17:52 EST 2012
Here's an updated version of this one with the dpll3xxx.c changes rolled
in.
- Paul
From: Mike Turquette <mturquette at linaro.org>
Date: Sat, 10 Nov 2012 16:58:41 -0700
Subject: [PATCH] ARM: OMAP4: clock: Convert to common clk
Convert all OMAP4 specific platform files to use COMMON clk
and keep all the changes under the CONFIG_COMMON_CLK macro check
so it does not break any existing code. At a later point switch
to COMMON clk and get rid of all old/legacy code.
This converts all apis which will be called directly from COMMON
clk to take a struct clk_hw parameter, and all the internal platform
apis to take a struct clk_hw_omap parameter.
Changes are based off the original patch from Mike Turquette.
Signed-off-by: Rajendra Nayak <rnayak at ti.com>
[paul at pwsan.com: created new omap2_clksel_find_parent_index() rather than
modifying omap2_init_clksel_parent(); moved clkhwops_iclk_wait to
clkt_iclk.c to fix OMAP4-only builds; added clk-provider.h include to clock.h
to try to fix some 3430-builds]
[mturquette at ti.com: squash patch for omap2_clkops_{en,dis}able_clkdm;
omap2_dflt_clk_is_enabled should not enable clocks]
Signed-off-by: Mike Turquette <mturquette at ti.com>
[paul at pwsan.com: fix compiler warning; update to apply; added kerneldoc on
non-trivial new functions; added the dpll3xxx clockdomain modifications]
Signed-off-by: Paul Walmsley <paul at pwsan.com>
---
arch/arm/mach-omap2/clkt_clksel.c | 184 ++++++++++++++++++++++-
arch/arm/mach-omap2/clkt_dpll.c | 54 ++++++-
arch/arm/mach-omap2/clkt_iclk.c | 14 +-
arch/arm/mach-omap2/clock.c | 294 ++++++++++++++++++++++++++++++++++++-
arch/arm/mach-omap2/clock.h | 77 +++++++++-
arch/arm/mach-omap2/dpll3xxx.c | 226 +++++++++++++++++++++++++++-
arch/arm/mach-omap2/dpll44xx.c | 38 +++++
7 files changed, 868 insertions(+), 19 deletions(-)
diff --git a/arch/arm/mach-omap2/clkt_clksel.c b/arch/arm/mach-omap2/clkt_clksel.c
index 53646fa..03ceb2e 100644
--- a/arch/arm/mach-omap2/clkt_clksel.c
+++ b/arch/arm/mach-omap2/clkt_clksel.c
@@ -41,7 +41,11 @@
#include <linux/kernel.h>
#include <linux/errno.h>
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+#else
#include <linux/clk.h>
+#endif
#include <linux/io.h>
#include <linux/bug.h>
@@ -58,11 +62,18 @@
* the element associated with the supplied parent clock address.
* Returns a pointer to the struct clksel on success or NULL on error.
*/
+#ifdef CONFIG_COMMON_CLK
+static const struct clksel *_get_clksel_by_parent(struct clk_hw_omap *clk,
+#else
static const struct clksel *_get_clksel_by_parent(struct clk *clk,
+#endif
struct clk *src_clk)
{
const struct clksel *clks;
+ if (!src_clk)
+ return NULL;
+
for (clks = clk->clksel; clks->parent; clks++)
if (clks->parent == src_clk)
break; /* Found the requested parent */
@@ -70,7 +81,11 @@ static const struct clksel *_get_clksel_by_parent(struct clk *clk,
if (!clks->parent) {
/* This indicates a data problem */
WARN(1, "clock: %s: could not find parent clock %s in clksel array\n",
+#ifdef CONFIG_COMMON_CLK
+ __clk_get_name(clk->hw.clk), __clk_get_name(src_clk));
+#else
__clk_get_name(clk), __clk_get_name(src_clk));
+#endif
return NULL;
}
@@ -92,6 +107,7 @@ static const struct clksel *_get_clksel_by_parent(struct clk *clk,
* success (in this latter case, the corresponding register bitfield
* value is passed back in the variable pointed to by @field_val)
*/
+#ifndef CONFIG_COMMON_CLK
static u8 _get_div_and_fieldval(struct clk *src_clk, struct clk *clk,
u32 *field_val)
{
@@ -134,6 +150,7 @@ static u8 _get_div_and_fieldval(struct clk *src_clk, struct clk *clk,
return max_div;
}
+#endif
/**
* _write_clksel_reg() - program a clock's clksel register in hardware
@@ -148,7 +165,11 @@ static u8 _get_div_and_fieldval(struct clk *src_clk, struct clk *clk,
* take into account any time the hardware might take to switch the
* clock source.
*/
+#ifdef CONFIG_COMMON_CLK
+static void _write_clksel_reg(struct clk_hw_omap *clk, u32 field_val)
+#else
static void _write_clksel_reg(struct clk *clk, u32 field_val)
+#endif
{
u32 v;
@@ -171,13 +192,22 @@ static void _write_clksel_reg(struct clk *clk, u32 field_val)
* before calling. Returns 0 on error or returns the actual integer divisor
* upon success.
*/
+#ifdef CONFIG_COMMON_CLK
+static u32 _clksel_to_divisor(struct clk_hw_omap *clk, u32 field_val)
+#else
static u32 _clksel_to_divisor(struct clk *clk, u32 field_val)
+#endif
{
const struct clksel *clks;
const struct clksel_rate *clkr;
struct clk *parent;
+#ifdef CONFIG_COMMON_CLK
+ parent = __clk_get_parent(clk->hw.clk);
+#else
parent = __clk_get_parent(clk);
+#endif
+
clks = _get_clksel_by_parent(clk, parent);
if (!clks)
return 0;
@@ -193,7 +223,12 @@ static u32 _clksel_to_divisor(struct clk *clk, u32 field_val)
if (!clkr->div) {
/* This indicates a data error */
WARN(1, "clock: %s: could not find fieldval %d for parent %s\n",
+#ifdef CONFIG_COMMON_CLK
+ __clk_get_name(clk->hw.clk), field_val,
+ __clk_get_name(parent));
+#else
__clk_get_name(clk), field_val, __clk_get_name(parent));
+#endif
return 0;
}
@@ -210,7 +245,11 @@ static u32 _clksel_to_divisor(struct clk *clk, u32 field_val)
* register field value _before_ left-shifting (i.e., LSB is at bit
* 0); or returns 0xFFFFFFFF (~0) upon error.
*/
+#ifdef CONFIG_COMMON_CLK
+static u32 _divisor_to_clksel(struct clk_hw_omap *clk, u32 div)
+#else
static u32 _divisor_to_clksel(struct clk *clk, u32 div)
+#endif
{
const struct clksel *clks;
const struct clksel_rate *clkr;
@@ -219,7 +258,11 @@ static u32 _divisor_to_clksel(struct clk *clk, u32 div)
/* should never happen */
WARN_ON(div == 0);
+#ifdef CONFIG_COMMON_CLK
+ parent = __clk_get_parent(clk->hw.clk);
+#else
parent = __clk_get_parent(clk);
+#endif
clks = _get_clksel_by_parent(clk, parent);
if (!clks)
return ~0;
@@ -234,7 +277,12 @@ static u32 _divisor_to_clksel(struct clk *clk, u32 div)
if (!clkr->div) {
pr_err("clock: %s: could not find divisor %d for parent %s\n",
+#ifdef CONFIG_COMMON_CLK
+ __clk_get_name(clk->hw.clk), div,
+ __clk_get_name(parent));
+#else
__clk_get_name(clk), div, __clk_get_name(parent));
+#endif
return ~0;
}
@@ -249,7 +297,11 @@ static u32 _divisor_to_clksel(struct clk *clk, u32 div)
* into the hardware, convert it into the actual divisor value, and
* return it; or return 0 on error.
*/
+#ifdef CONFIG_COMMON_CLK
+static u32 _read_divisor(struct clk_hw_omap *clk)
+#else
static u32 _read_divisor(struct clk *clk)
+#endif
{
u32 v;
@@ -277,7 +329,12 @@ static u32 _read_divisor(struct clk *clk)
*
* Returns the rounded clock rate or returns 0xffffffff on error.
*/
+#ifdef CONFIG_COMMON_CLK
+u32 omap2_clksel_round_rate_div(struct clk_hw_omap *clk,
+ unsigned long target_rate,
+#else
u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
+#endif
u32 *new_div)
{
unsigned long test_rate;
@@ -288,9 +345,14 @@ u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
unsigned long parent_rate;
const char *clk_name;
+#ifdef CONFIG_COMMON_CLK
+ parent = __clk_get_parent(clk->hw.clk);
+ clk_name = __clk_get_name(clk->hw.clk);
+#else
parent = __clk_get_parent(clk);
- parent_rate = __clk_get_rate(parent);
clk_name = __clk_get_name(clk);
+#endif
+ parent_rate = __clk_get_rate(parent);
if (!clk->clksel || !clk->clksel_mask)
return ~0;
@@ -340,6 +402,63 @@ u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
* (i.e., those used in struct clk field function pointers, etc.)
*/
+#ifdef CONFIG_COMMON_CLK
+/**
+ * omap2_clksel_find_parent_index() - return the array index of the current
+ * hardware parent of @hw
+ * @hw: struct clk_hw * to find the current hardware parent of
+ *
+ * Given a struct clk_hw pointer @hw to the 'hw' member of a struct
+ * clk_hw_omap record representing a source-selectable hardware clock,
+ * read the hardware register and determine what its parent is
+ * currently set to. Intended to be called only by the common clock
+ * framework struct clk_hw_ops.get_parent function pointer. Return
+ * the array index of this parent clock upon success -- there is no
+ * way to return an error, so if we encounter an error, just WARN()
+ * and pretend that we know that we're doing.
+ */
+u8 omap2_clksel_find_parent_index(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+ const struct clksel *clks;
+ const struct clksel_rate *clkr;
+ u32 r, found = 0;
+ struct clk *parent;
+ const char *clk_name;
+ int ret = 0, f = 0;
+
+ parent = __clk_get_parent(hw->clk);
+ clk_name = __clk_get_name(hw->clk);
+
+ /* XXX should be able to return an error */
+ WARN((!clk->clksel || !clk->clksel_mask),
+ "clock: %s: attempt to call on a non-clksel clock", clk_name);
+
+ r = __raw_readl(clk->clksel_reg) & clk->clksel_mask;
+ r >>= __ffs(clk->clksel_mask);
+
+ for (clks = clk->clksel; clks->parent && !found; clks++) {
+ for (clkr = clks->rates; clkr->div && !found; clkr++) {
+ if (!(clkr->flags & cpu_mask))
+ continue;
+
+ if (clkr->val == r) {
+ found = 1;
+ ret = f;
+ }
+ }
+ f++;
+ }
+
+ /* This indicates a data error */
+ WARN(!found, "clock: %s: init parent: could not find regval %0x\n",
+ clk_name, r);
+
+ return ret;
+}
+
+#else
+
/**
* omap2_init_clksel_parent() - set a clksel clk's parent field from the hdwr
* @clk: OMAP clock struct ptr to use
@@ -393,6 +512,8 @@ void omap2_init_clksel_parent(struct clk *clk)
return;
}
+#endif
+
/**
* omap2_clksel_recalc() - function ptr to pass via struct clk .recalc field
* @clk: struct clk *
@@ -402,6 +523,28 @@ void omap2_init_clksel_parent(struct clk *clk)
* function. Returns the clock's current rate, based on its parent's rate
* and its current divisor setting in the hardware.
*/
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap2_clksel_recalc(struct clk_hw *hw, unsigned long parent_rate)
+{
+ unsigned long rate;
+ u32 div = 0;
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+
+ if (!parent_rate)
+ return 0;
+
+ div = _read_divisor(clk);
+ if (!div)
+ rate = parent_rate;
+ else
+ rate = parent_rate / div;
+
+ pr_debug("%s: recalc'd %s's rate to %lu (div %d)\n", __func__,
+ __clk_get_name(hw->clk), rate, div);
+
+ return rate;
+}
+#else
unsigned long omap2_clksel_recalc(struct clk *clk)
{
unsigned long rate;
@@ -420,6 +563,7 @@ unsigned long omap2_clksel_recalc(struct clk *clk)
return rate;
}
+#endif
/**
* omap2_clksel_round_rate() - find rounded rate for the given clock and rate
@@ -432,8 +576,15 @@ unsigned long omap2_clksel_recalc(struct clk *clk)
*
* Returns the rounded clock rate or returns 0xffffffff on error.
*/
+#ifdef CONFIG_COMMON_CLK
+long omap2_clksel_round_rate(struct clk_hw *hw, unsigned long target_rate,
+ unsigned long *parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate)
{
+#endif
u32 new_div;
return omap2_clksel_round_rate_div(clk, target_rate, &new_div);
@@ -454,8 +605,15 @@ long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate)
* is changed, they will all be affected without any notification.
* Returns -EINVAL upon error, or 0 upon success.
*/
+#ifdef CONFIG_COMMON_CLK
+int omap2_clksel_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
int omap2_clksel_set_rate(struct clk *clk, unsigned long rate)
{
+#endif
u32 field_val, validrate, new_div = 0;
if (!clk->clksel || !clk->clksel_mask)
@@ -471,11 +629,16 @@ int omap2_clksel_set_rate(struct clk *clk, unsigned long rate)
_write_clksel_reg(clk, field_val);
- clk->rate = __clk_get_rate(__clk_get_parent(clk)) / new_div;
-
+#ifdef CONFIG_COMMON_CLK
+ pr_debug("clock: %s: set rate to %ld\n", __clk_get_name(hw->clk),
+ __clk_get_rate(hw->clk));
+#else
pr_debug("clock: %s: set rate to %ld\n", __clk_get_name(clk),
__clk_get_rate(clk));
+ clk->rate = __clk_get_rate(__clk_get_parent(clk)) / new_div;
+#endif
+
return 0;
}
@@ -499,6 +662,18 @@ int omap2_clksel_set_rate(struct clk *clk, unsigned long rate)
* affected without any notification. Returns -EINVAL upon error, or
* 0 upon success.
*/
+#ifdef CONFIG_COMMON_CLK
+int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+
+ if (!clk->clksel || !clk->clksel_mask)
+ return -EINVAL;
+
+ _write_clksel_reg(clk, field_val);
+ return 0;
+}
+#else
int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent)
{
u32 field_val = 0;
@@ -510,7 +685,6 @@ int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent)
parent_div = _get_div_and_fieldval(new_parent, clk, &field_val);
if (!parent_div)
return -EINVAL;
-
_write_clksel_reg(clk, field_val);
clk_reparent(clk, new_parent);
@@ -520,7 +694,6 @@ int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent)
if (parent_div > 0)
__clk_get_rate(clk) /= parent_div;
-
pr_debug("clock: %s: set parent to %s (new rate %ld)\n",
__clk_get_name(clk),
__clk_get_name(__clk_get_parent(clk)),
@@ -528,3 +701,4 @@ int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent)
return 0;
}
+#endif
diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c
index 8463cc3..f343389 100644
--- a/arch/arm/mach-omap2/clkt_dpll.c
+++ b/arch/arm/mach-omap2/clkt_dpll.c
@@ -16,7 +16,11 @@
#include <linux/kernel.h>
#include <linux/errno.h>
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+#else
#include <linux/clk.h>
+#endif
#include <linux/io.h>
#include <asm/div64.h>
@@ -76,7 +80,11 @@
* (assuming that it is counting N upwards), or -2 if the enclosing loop
* should skip to the next iteration (again assuming N is increasing).
*/
+#ifdef CONFIG_COMMON_CLK
+static int _dpll_test_fint(struct clk_hw_omap *clk, u8 n)
+#else
static int _dpll_test_fint(struct clk *clk, u8 n)
+#endif
{
struct dpll_data *dd;
long fint, fint_min, fint_max;
@@ -85,7 +93,11 @@ static int _dpll_test_fint(struct clk *clk, u8 n)
dd = clk->dpll_data;
/* DPLL divider must result in a valid jitter correction val */
+#ifdef CONFIG_COMMON_CLK
+ fint = __clk_get_rate(__clk_get_parent(clk->hw.clk)) / n;
+#else
fint = __clk_get_rate(__clk_get_parent(clk)) / n;
+#endif
if (cpu_is_omap24xx()) {
/* Should not be called for OMAP2, so warn if it is called */
@@ -186,15 +198,24 @@ static int _dpll_test_mult(int *m, int n, unsigned long *new_rate,
}
/* Public functions */
-
+#ifdef CONFIG_COMMON_CLK
+u8 omap2_init_dpll_parent(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
void omap2_init_dpll_parent(struct clk *clk)
{
+#endif
u32 v;
struct dpll_data *dd;
dd = clk->dpll_data;
if (!dd)
+#ifdef CONFIG_COMMON_CLK
+ return -EINVAL;
+#else
return;
+#endif
v = __raw_readl(dd->control_reg);
v &= dd->enable_mask;
@@ -204,18 +225,34 @@ void omap2_init_dpll_parent(struct clk *clk)
if (cpu_is_omap24xx()) {
if (v == OMAP2XXX_EN_DPLL_LPBYPASS ||
v == OMAP2XXX_EN_DPLL_FRBYPASS)
+#ifdef CONFIG_COMMON_CLK
+ return 1;
+#else
clk_reparent(clk, dd->clk_bypass);
+#endif
} else if (cpu_is_omap34xx()) {
if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
v == OMAP3XXX_EN_DPLL_FRBYPASS)
+#ifdef CONFIG_COMMON_CLK
+ return 1;
+#else
clk_reparent(clk, dd->clk_bypass);
+#endif
} else if (soc_is_am33xx() || cpu_is_omap44xx()) {
if (v == OMAP4XXX_EN_DPLL_LPBYPASS ||
v == OMAP4XXX_EN_DPLL_FRBYPASS ||
v == OMAP4XXX_EN_DPLL_MNBYPASS)
+#ifdef CONFIG_COMMON_CLK
+ return 1;
+#else
clk_reparent(clk, dd->clk_bypass);
+#endif
}
+#ifdef CONFIG_COMMON_CLK
+ return 0;
+#else
return;
+#endif
}
/**
@@ -232,7 +269,11 @@ void omap2_init_dpll_parent(struct clk *clk)
* locked, or the appropriate bypass rate if the DPLL is bypassed, or 0
* if the clock @clk is not a DPLL.
*/
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk)
+#else
u32 omap2_get_dpll_rate(struct clk *clk)
+#endif
{
long long dpll_clk;
u32 dpll_mult, dpll_div, v;
@@ -288,8 +329,15 @@ u32 omap2_get_dpll_rate(struct clk *clk)
* (expensive) function again. Returns ~0 if the target rate cannot
* be rounded, or the rounded rate upon success.
*/
+#ifdef CONFIG_COMMON_CLK
+long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
+ unsigned long *parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
{
+#endif
int m, n, r, scaled_max_m;
unsigned long scaled_rt_rp;
unsigned long new_rate = 0;
@@ -303,7 +351,11 @@ long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
dd = clk->dpll_data;
ref_rate = __clk_get_rate(dd->clk_ref);
+#ifdef CONFIG_COMMON_CLK
+ clk_name = __clk_get_name(hw->clk);
+#else
clk_name = __clk_get_name(clk);
+#endif
pr_debug("clock: %s: starting DPLL round_rate, target rate %ld\n",
clk_name, target_rate);
diff --git a/arch/arm/mach-omap2/clkt_iclk.c b/arch/arm/mach-omap2/clkt_iclk.c
index fe774a0..3b661ba 100644
--- a/arch/arm/mach-omap2/clkt_iclk.c
+++ b/arch/arm/mach-omap2/clkt_iclk.c
@@ -11,7 +11,11 @@
#undef DEBUG
#include <linux/kernel.h>
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+#else
#include <linux/clk.h>
+#endif
#include <linux/io.h>
@@ -48,6 +52,14 @@ void omap2_clkt_iclk_deny_idle(struct clk *clk)
/* Public data */
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_iclk_wait = {
+ .allow_idle = omap2_clkt_iclk_allow_idle,
+ .deny_idle = omap2_clkt_iclk_deny_idle,
+ .find_idlest = omap2_clk_dflt_find_idlest,
+ .find_companion = omap2_clk_dflt_find_companion,
+};
+#else
const struct clkops clkops_omap2_iclk_dflt_wait = {
.enable = omap2_dflt_clk_enable,
.disable = omap2_dflt_clk_disable,
@@ -77,4 +89,4 @@ const struct clkops clkops_omap2_mdmclk_dflt_wait = {
.allow_idle = omap2_clkt_iclk_allow_idle,
.deny_idle = omap2_clkt_iclk_deny_idle,
};
-
+#endif
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index e381d991..72d7105 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -20,7 +20,11 @@
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/delay.h>
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+#else
#include <linux/clk.h>
+#endif
#include <linux/io.h>
#include <linux/bitops.h>
@@ -57,7 +61,33 @@ static bool clkdm_control = true;
static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
+#ifndef CONFIG_COMMON_CLK
static DEFINE_SPINLOCK(clockfw_lock);
+#endif
+
+#ifdef CONFIG_COMMON_CLK
+
+/*
+ * Used for clocks that have the same value as the parent clock,
+ * divided by some factor
+ */
+unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_hw_omap *oclk;
+
+ if (!hw) {
+ pr_warn("%s: hw is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ oclk = to_clk_hw_omap(hw);
+
+ WARN_ON(!oclk->fixed_div);
+
+ return parent_rate / oclk->fixed_div;
+}
+#endif
/*
* OMAP2+ specific clock functions
@@ -109,7 +139,11 @@ static int _wait_idlest_generic(void __iomem *reg, u32 mask, u8 idlest,
* belong in the clock code and will be moved in the medium term to
* module-dependent code. No return value.
*/
+#ifdef CONFIG_COMMON_CLK
+static void _omap2_module_wait_ready(struct clk_hw_omap *clk)
+#else
static void _omap2_module_wait_ready(struct clk *clk)
+#endif
{
void __iomem *companion_reg, *idlest_reg;
u8 other_bit, idlest_bit, idlest_val, idlest_reg_id;
@@ -124,12 +158,15 @@ static void _omap2_module_wait_ready(struct clk *clk)
}
clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit, &idlest_val);
-
r = cm_split_idlest_reg(idlest_reg, &prcm_mod, &idlest_reg_id);
if (r) {
/* IDLEST register not in the CM module */
_wait_idlest_generic(idlest_reg, (1 << idlest_bit), idlest_val,
+#ifdef CONFIG_COMMON_CLK
+ __clk_get_name(clk->hw.clk));
+#else
clk->name);
+#endif
} else {
cm_wait_module_ready(prcm_mod, idlest_reg_id, idlest_bit);
};
@@ -145,15 +182,25 @@ static void _omap2_module_wait_ready(struct clk *clk)
* clockdomain pointer, and save it into the struct clk. Intended to be
* called during clk_register(). No return value.
*/
+#ifdef CONFIG_COMMON_CLK
+void omap2_init_clk_clkdm(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
void omap2_init_clk_clkdm(struct clk *clk)
{
+#endif
struct clockdomain *clkdm;
const char *clk_name;
if (!clk->clkdm_name)
return;
+#ifdef CONFIG_COMMON_CLK
+ clk_name = __clk_get_name(hw->clk);
+#else
clk_name = __clk_get_name(clk);
+#endif
clkdm = clkdm_lookup(clk->clkdm_name);
if (clkdm) {
@@ -200,8 +247,12 @@ void __init omap2_clk_disable_clkdm_control(void)
* associate this type of code with per-module data structures to
* avoid this issue, and remove the casts. No return value.
*/
-void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
- u8 *other_bit)
+#ifdef CONFIG_COMMON_CLK
+void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
+#else
+void omap2_clk_dflt_find_companion(struct clk *clk,
+#endif
+ void __iomem **other_reg, u8 *other_bit)
{
u32 r;
@@ -229,8 +280,12 @@ void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
* register address ID (e.g., that CM_FCLKEN2 corresponds to
* CM_IDLEST2). This is not true for all modules. No return value.
*/
-void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
- u8 *idlest_bit, u8 *idlest_val)
+#ifdef CONFIG_COMMON_CLK
+void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
+#else
+void omap2_clk_dflt_find_idlest(struct clk *clk,
+#endif
+ void __iomem **idlest_reg, u8 *idlest_bit, u8 *idlest_val)
{
u32 r;
@@ -252,6 +307,225 @@ void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
}
+#ifdef CONFIG_COMMON_CLK
+/**
+ * omap2_dflt_clk_enable - enable a clock in the hardware
+ * @hw: struct clk_hw * of the clock to enable
+ *
+ * Enable the clock @hw in the hardware. We first call into the OMAP
+ * clockdomain code to "enable" the corresponding clockdomain if this
+ * is the first enabled user of the clockdomain. Then program the
+ * hardware to enable the clock. Then wait for the IP block that uses
+ * this clock to leave idle (if applicable). Returns the error value
+ * from clkdm_clk_enable() if it terminated with an error, or -EINVAL
+ * if @hw has a null clock enable_reg, or zero upon success.
+ */
+int omap2_dflt_clk_enable(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk;
+ u32 v;
+ int ret = 0;
+
+ clk = to_clk_hw_omap(hw);
+
+ if (clkdm_control && clk->clkdm) {
+ ret = clkdm_clk_enable(clk->clkdm, hw->clk);
+ if (ret) {
+ WARN(1, "%s: could not enable %s's clockdomain %s: %d\n",
+ __func__, __clk_get_name(hw->clk),
+ clk->clkdm->name, ret);
+ return ret;
+ }
+ }
+
+ if (unlikely(clk->enable_reg == NULL)) {
+ pr_err("%s: %s missing enable_reg\n", __func__,
+ __clk_get_name(hw->clk));
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* FIXME should not have INVERT_ENABLE bit here */
+ v = __raw_readl(clk->enable_reg);
+ if (clk->flags & INVERT_ENABLE)
+ v &= ~(1 << clk->enable_bit);
+ else
+ v |= (1 << clk->enable_bit);
+ __raw_writel(v, clk->enable_reg);
+ v = __raw_readl(clk->enable_reg); /* OCP barrier */
+
+ if (clk->ops && clk->ops->find_idlest)
+ _omap2_module_wait_ready(clk);
+
+ return 0;
+
+err:
+ if (clkdm_control && clk->clkdm)
+ clkdm_clk_disable(clk->clkdm, hw->clk);
+ return ret;
+}
+
+/**
+ * omap2_dflt_clk_disable - disable a clock in the hardware
+ * @hw: struct clk_hw * of the clock to disable
+ *
+ * Disable the clock @hw in the hardware, and call into the OMAP
+ * clockdomain code to "disable" the corresponding clockdomain if all
+ * clocks/hwmods in that clockdomain are now disabled. No return
+ * value.
+ */
+void omap2_dflt_clk_disable(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk;
+ u32 v;
+
+ clk = to_clk_hw_omap(hw);
+ if (!clk->enable_reg) {
+ /*
+ * 'independent' here refers to a clock which is not
+ * controlled by its parent.
+ */
+ pr_err("%s: independent clock %s has no enable_reg\n",
+ __func__, __clk_get_name(hw->clk));
+ return;
+ }
+
+ v = __raw_readl(clk->enable_reg);
+ if (clk->flags & INVERT_ENABLE)
+ v |= (1 << clk->enable_bit);
+ else
+ v &= ~(1 << clk->enable_bit);
+ __raw_writel(v, clk->enable_reg);
+ /* No OCP barrier needed here since it is a disable operation */
+
+ if (clkdm_control && clk->clkdm)
+ clkdm_clk_disable(clk->clkdm, hw->clk);
+}
+
+/**
+ * omap2_clkops_enable_clkdm - increment usecount on clkdm of @hw
+ * @hw: struct clk_hw * of the clock being enabled
+ *
+ * Increment the usecount of the clockdomain of the clock pointed to
+ * by @hw; if the usecount is 1, the clockdomain will be "enabled."
+ * Only needed for clocks that don't use omap2_dflt_clk_enable() as
+ * their enable function pointer. Passes along the return value of
+ * clkdm_clk_enable(), -EINVAL if @hw is not associated with a
+ * clockdomain, or 0 if clock framework-based clockdomain control is
+ * not implemented.
+ */
+int omap2_clkops_enable_clkdm(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk;
+ int ret = 0;
+
+ clk = to_clk_hw_omap(hw);
+
+ if (unlikely(!clk->clkdm)) {
+ pr_err("%s: %s: no clkdm set ?!\n", __func__,
+ __clk_get_name(hw->clk));
+ return -EINVAL;
+ }
+
+ if (unlikely(clk->enable_reg))
+ pr_err("%s: %s: should use dflt_clk_enable ?!\n", __func__,
+ __clk_get_name(hw->clk));
+
+ if (!clkdm_control) {
+ pr_err("%s: %s: clkfw-based clockdomain control disabled ?!\n",
+ __func__, __clk_get_name(hw->clk));
+ return 0;
+ }
+
+ ret = clkdm_clk_enable(clk->clkdm, hw->clk);
+ WARN(ret, "%s: could not enable %s's clockdomain %s: %d\n",
+ __func__, __clk_get_name(hw->clk), clk->clkdm->name, ret);
+
+ return ret;
+}
+
+/**
+ * omap2_clkops_disable_clkdm - decrement usecount on clkdm of @hw
+ * @hw: struct clk_hw * of the clock being disabled
+ *
+ * Decrement the usecount of the clockdomain of the clock pointed to
+ * by @hw; if the usecount is 0, the clockdomain will be "disabled."
+ * Only needed for clocks that don't use omap2_dflt_clk_disable() as their
+ * disable function pointer. No return value.
+ */
+void omap2_clkops_disable_clkdm(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk;
+
+ clk = to_clk_hw_omap(hw);
+
+ if (unlikely(!clk->clkdm)) {
+ pr_err("%s: %s: no clkdm set ?!\n", __func__,
+ __clk_get_name(hw->clk));
+ return;
+ }
+
+ if (unlikely(clk->enable_reg))
+ pr_err("%s: %s: should use dflt_clk_disable ?!\n", __func__,
+ __clk_get_name(hw->clk));
+
+ if (!clkdm_control) {
+ pr_err("%s: %s: clkfw-based clockdomain control disabled ?!\n",
+ __func__, __clk_get_name(hw->clk));
+ return;
+ }
+
+ clkdm_clk_disable(clk->clkdm, hw->clk);
+}
+
+/**
+ * omap2_dflt_clk_is_enabled - is clock enabled in the hardware?
+ * @hw: struct clk_hw * to check
+ *
+ * Return 1 if the clock represented by @hw is enabled in the
+ * hardware, or 0 otherwise. Intended for use in the struct
+ * clk_ops.is_enabled function pointer.
+ */
+int omap2_dflt_clk_is_enabled(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+ u32 v;
+
+ v = __raw_readl(clk->enable_reg);
+
+ if (clk->flags & INVERT_ENABLE)
+ v ^= BIT(clk->enable_bit);
+
+ v &= BIT(clk->enable_bit);
+
+ return v ? 1 : 0;
+}
+
+static int __initdata mpurate;
+
+/*
+ * By default we use the rate set by the bootloader.
+ * You can override this with mpurate= cmdline option.
+ */
+static int __init omap_clk_setup(char *str)
+{
+ get_option(&str, &mpurate);
+
+ if (!mpurate)
+ return 1;
+
+ if (mpurate < 1000)
+ mpurate *= 1000000;
+
+ return 1;
+}
+__setup("mpurate=", omap_clk_setup);
+
+const struct clk_hw_omap_ops clkhwops_wait = {
+ .find_idlest = omap2_clk_dflt_find_idlest,
+ .find_companion = omap2_clk_dflt_find_companion,
+};
+#else
int omap2_dflt_clk_enable(struct clk *clk)
{
u32 v;
@@ -482,6 +756,8 @@ void omap2_clk_disable_unused(struct clk *clk)
}
#endif
+#endif /* CONFIG_COMMON_CLK */
+
/**
* omap2_clk_switch_mpurate_at_boot - switch ARM MPU rate by boot-time argument
* @mpurate_ck_name: clk name of the clock to change rate
@@ -512,13 +788,15 @@ int __init omap2_clk_switch_mpurate_at_boot(const char *mpurate_ck_name)
r = clk_set_rate(mpurate_ck, mpurate);
if (IS_ERR_VALUE(r)) {
WARN(1, "clock: %s: unable to set MPU rate to %d: %d\n",
- mpurate_ck->name, mpurate, r);
+ mpurate_ck_name, mpurate, r);
clk_put(mpurate_ck);
return -EINVAL;
}
calibrate_delay();
+#ifndef CONFIG_COMMON_CLK
recalculate_root_clocks();
+#endif
clk_put(mpurate_ck);
@@ -564,8 +842,8 @@ void __init omap2_clk_print_new_rates(const char *hfclkin_ck_name,
(clk_get_rate(mpu_ck) / 1000000));
}
+#ifndef CONFIG_COMMON_CLK
/* Common data */
-
int clk_enable(struct clk *clk)
{
unsigned long flags;
@@ -1072,4 +1350,4 @@ err_out:
late_initcall(clk_debugfs_init);
#endif /* defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) */
-
+#endif /* CONFIG_COMMON_CLK */
diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 697e044..5a4f4fe 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -397,6 +397,7 @@ extern const struct clkops clkops_null;
extern struct clk dummy_ck;
+#endif /* CONFIG_COMMON_CLK */
/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
#define CORE_CLK_SRC_32K 0x0
@@ -427,11 +428,36 @@ extern struct clk dummy_ck;
/* DPLL Type and DCO Selection Flags */
#define DPLL_J_TYPE 0x1
+#ifndef CONFIG_COMMON_CLK
int omap2_clk_enable(struct clk *clk);
void omap2_clk_disable(struct clk *clk);
long omap2_clk_round_rate(struct clk *clk, unsigned long rate);
int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
+#endif /* CONFIG_COMMON_CLK */
+
+#ifdef CONFIG_COMMON_CLK
+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);
+#else
long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
unsigned long omap3_dpll_recalc(struct clk *clk);
unsigned long omap3_clkoutx2_recalc(struct clk *clk);
@@ -446,17 +472,33 @@ void omap4_dpllmx_allow_gatectrl(struct clk *clk);
void omap4_dpllmx_deny_gatectrl(struct clk *clk);
long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate);
unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk);
+#endif
#ifdef CONFIG_OMAP_RESET_CLOCKS
void omap2_clk_disable_unused(struct clk *clk);
#else
#define omap2_clk_disable_unused NULL
#endif
-
+#ifdef CONFIG_COMMON_CLK
+void omap2_init_clk_clkdm(struct clk_hw *clk);
+#else
void omap2_init_clk_clkdm(struct clk *clk);
+#endif
void __init omap2_clk_disable_clkdm_control(void);
/* clkt_clksel.c public functions */
+#ifdef CONFIG_COMMON_CLK
+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);
+#else
u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate,
u32 *new_div);
void omap2_init_clksel_parent(struct clk *clk);
@@ -464,20 +506,38 @@ unsigned long omap2_clksel_recalc(struct clk *clk);
long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate);
int omap2_clksel_set_rate(struct clk *clk, unsigned long rate);
int omap2_clksel_set_parent(struct clk *clk, struct clk *new_parent);
+#endif
/* clkt_iclk.c public functions */
extern void omap2_clkt_iclk_allow_idle(struct clk *clk);
extern void omap2_clkt_iclk_deny_idle(struct clk *clk);
+#ifdef CONFIG_COMMON_CLK
+u8 omap2_init_dpll_parent(struct clk_hw *hw);
+unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
+#else
u32 omap2_get_dpll_rate(struct clk *clk);
void omap2_init_dpll_parent(struct clk *clk);
+#endif
+#ifdef CONFIG_COMMON_CLK
+int omap2_dflt_clk_enable(struct clk_hw *hw);
+void omap2_dflt_clk_disable(struct clk_hw *hw);
+int omap2_dflt_clk_is_enabled(struct clk_hw *hw);
+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);
+#else
int omap2_dflt_clk_enable(struct clk *clk);
void omap2_dflt_clk_disable(struct clk *clk);
void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg,
u8 *other_bit);
void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg,
u8 *idlest_bit, u8 *idlest_val);
+#endif
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,
@@ -496,6 +556,13 @@ extern const struct clksel_rate gpt_sys_rates[];
extern const struct clksel_rate gfx_l3_rates[];
extern const struct clksel_rate dsp_ick_rates[];
+#ifdef CONFIG_COMMON_CLK
+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;
+#endif
+
extern const struct clkops clkops_omap2_iclk_dflt_wait;
extern const struct clkops clkops_omap2_iclk_dflt;
extern const struct clkops clkops_omap2_iclk_idle_only;
@@ -513,11 +580,17 @@ 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[];
+#ifndef CONFIG_COMMON_CLK
/* clocks shared between various OMAP SoCs */
extern struct clk virt_19200000_ck;
extern struct clk virt_26000000_ck;
+#endif
extern int am33xx_clk_init(void);
-#endif /* CONFIG_COMMON_CLK */
+#ifdef CONFIG_COMMON_CLK
+extern int omap2_clkops_enable_clkdm(struct clk_hw *hw);
+extern void omap2_clkops_disable_clkdm(struct clk_hw *hw);
+#endif
+
#endif
diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index eacf51f..f72dedb 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -29,6 +29,7 @@
#include <linux/clkdev.h>
#include "soc.h"
+#include "clockdomain.h"
#include "clock.h"
#include "cm2xxx_3xxx.h"
#include "cm-regbits-34xx.h"
@@ -42,7 +43,11 @@
/* Private functions */
/* _omap3_dpll_write_clken - write clken_bits arg to a DPLL's enable bits */
+#ifdef CONFIG_COMMON_CLK
+static void _omap3_dpll_write_clken(struct clk_hw_omap *clk, u8 clken_bits)
+#else
static void _omap3_dpll_write_clken(struct clk *clk, u8 clken_bits)
+#endif
{
const struct dpll_data *dd;
u32 v;
@@ -56,7 +61,11 @@ static void _omap3_dpll_write_clken(struct clk *clk, u8 clken_bits)
}
/* _omap3_wait_dpll_status: wait for a DPLL to enter a specific state */
+#ifdef CONFIG_COMMON_CLK
+static int _omap3_wait_dpll_status(struct clk_hw_omap *clk, u8 state)
+#else
static int _omap3_wait_dpll_status(struct clk *clk, u8 state)
+#endif
{
const struct dpll_data *dd;
int i = 0;
@@ -64,7 +73,11 @@ static int _omap3_wait_dpll_status(struct clk *clk, u8 state)
const char *clk_name;
dd = clk->dpll_data;
+#ifdef CONFIG_COMMON_CLK
+ clk_name = __clk_get_name(clk->hw.clk);
+#else
clk_name = __clk_get_name(clk);
+#endif
state <<= __ffs(dd->idlest_mask);
@@ -88,7 +101,11 @@ static int _omap3_wait_dpll_status(struct clk *clk, u8 state)
}
/* From 3430 TRM ES2 4.7.6.2 */
+#ifdef CONFIG_COMMON_CLK
+static u16 _omap3_dpll_compute_freqsel(struct clk_hw_omap *clk, u8 n)
+#else
static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
+#endif
{
unsigned long fint;
u16 f = 0;
@@ -133,14 +150,22 @@ static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
* locked successfully, return 0; if the DPLL did not lock in the time
* allotted, or DPLL3 was passed in, return -EINVAL.
*/
+#ifdef CONFIG_COMMON_CLK
+static int _omap3_noncore_dpll_lock(struct clk_hw_omap *clk)
+#else
static int _omap3_noncore_dpll_lock(struct clk *clk)
+#endif
{
const struct dpll_data *dd;
u8 ai;
u8 state = 1;
int r = 0;
+#ifdef CONFIG_COMMON_CLK
+ pr_debug("clock: locking DPLL %s\n", __clk_get_name(clk->hw.clk));
+#else
pr_debug("clock: locking DPLL %s\n", __clk_get_name(clk));
+#endif
dd = clk->dpll_data;
state <<= __ffs(dd->idlest_mask);
@@ -178,7 +203,11 @@ done:
* DPLL3 was passed in, or the DPLL does not support low-power bypass,
* return -EINVAL.
*/
+#ifdef CONFIG_COMMON_CLK
+static int _omap3_noncore_dpll_bypass(struct clk_hw_omap *clk)
+#else
static int _omap3_noncore_dpll_bypass(struct clk *clk)
+#endif
{
int r;
u8 ai;
@@ -187,7 +216,11 @@ static int _omap3_noncore_dpll_bypass(struct clk *clk)
return -EINVAL;
pr_debug("clock: configuring DPLL %s for low-power bypass\n",
+#ifdef CONFIG_COMMON_CLK
+ __clk_get_name(clk->hw.clk));
+#else
__clk_get_name(clk));
+#endif
ai = omap3_dpll_autoidle_read(clk);
@@ -210,14 +243,22 @@ static int _omap3_noncore_dpll_bypass(struct clk *clk)
* code. If DPLL3 was passed in, or the DPLL does not support
* low-power stop, return -EINVAL; otherwise, return 0.
*/
+#ifdef CONFIG_COMMON_CLK
+static int _omap3_noncore_dpll_stop(struct clk_hw_omap *clk)
+#else
static int _omap3_noncore_dpll_stop(struct clk *clk)
+#endif
{
u8 ai;
if (!(clk->dpll_data->modes & (1 << DPLL_LOW_POWER_STOP)))
return -EINVAL;
+#ifdef CONFIG_COMMON_CLK
+ pr_debug("clock: stopping DPLL %s\n", __clk_get_name(clk->hw.clk));
+#else
pr_debug("clock: stopping DPLL %s\n", __clk_get_name(clk));
+#endif
ai = omap3_dpll_autoidle_read(clk);
@@ -241,11 +282,19 @@ static int _omap3_noncore_dpll_stop(struct clk *clk)
* XXX This code is not needed for 3430/AM35xx; can it be optimized
* out in non-multi-OMAP builds for those chips?
*/
+#ifdef CONFIG_COMMON_CLK
+static void _lookup_dco(struct clk_hw_omap *clk, u8 *dco, u16 m, u8 n)
+#else
static void _lookup_dco(struct clk *clk, u8 *dco, u16 m, u8 n)
+#endif
{
unsigned long fint, clkinp; /* watch out for overflow */
+#ifdef CONFIG_COMMON_CLK
+ clkinp = __clk_get_rate(__clk_get_parent(clk->hw.clk));
+#else
clkinp = __clk_get_rate(__clk_get_parent(clk));
+#endif
fint = (clkinp / n) * m;
if (fint < 1000000000)
@@ -266,12 +315,20 @@ static void _lookup_dco(struct clk *clk, u8 *dco, u16 m, u8 n)
* XXX This code is not needed for 3430/AM35xx; can it be optimized
* out in non-multi-OMAP builds for those chips?
*/
+#ifdef CONFIG_COMMON_CLK
+static void _lookup_sddiv(struct clk_hw_omap *clk, u8 *sd_div, u16 m, u8 n)
+#else
static void _lookup_sddiv(struct clk *clk, u8 *sd_div, u16 m, u8 n)
+#endif
{
unsigned long clkinp, sd; /* watch out for overflow */
int mod1, mod2;
+#ifdef CONFIG_COMMON_CLK
+ clkinp = __clk_get_rate(__clk_get_parent(clk->hw.clk));
+#else
clkinp = __clk_get_rate(__clk_get_parent(clk));
+#endif
/*
* target sigma-delta to near 250MHz
@@ -298,7 +355,12 @@ static void _lookup_sddiv(struct clk *clk, u8 *sd_div, u16 m, u8 n)
* Program the DPLL with the supplied M, N values, and wait for the DPLL to
* lock.. Returns -EINVAL upon error, or 0 upon success.
*/
+#ifdef CONFIG_COMMON_CLK
+static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 m, u8 n,
+ u16 freqsel)
+#else
static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
+#endif
{
struct dpll_data *dd = clk->dpll_data;
u8 dco, sd_div;
@@ -355,8 +417,14 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
*
* Recalculate and propagate the DPLL rate.
*/
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
unsigned long omap3_dpll_recalc(struct clk *clk)
{
+#endif
return omap2_get_dpll_rate(clk);
}
@@ -376,8 +444,14 @@ unsigned long omap3_dpll_recalc(struct clk *clk)
* support low-power stop, or if the DPLL took too long to enter
* bypass or lock, return -EINVAL; otherwise, return 0.
*/
+#ifdef CONFIG_COMMON_CLK
+int omap3_noncore_dpll_enable(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
int omap3_noncore_dpll_enable(struct clk *clk)
{
+#endif
int r;
struct dpll_data *dd;
struct clk *parent;
@@ -386,15 +460,34 @@ int omap3_noncore_dpll_enable(struct clk *clk)
if (!dd)
return -EINVAL;
+#ifdef CONFIG_COMMON_CLK
+ if (clk->clkdm) {
+ r = clkdm_clk_enable(clk->clkdm, hw->clk);
+ if (r) {
+ WARN(1,
+ "%s: could not enable %s's clockdomain %s: %d\n",
+ __func__, __clk_get_name(hw->clk),
+ clk->clkdm->name, r);
+ return r;
+ }
+ }
+
+ parent = __clk_get_parent(hw->clk);
+
+ if (__clk_get_rate(hw->clk) == __clk_get_rate(dd->clk_bypass)) {
+#else
parent = __clk_get_parent(clk);
if (__clk_get_rate(clk) == __clk_get_rate(dd->clk_bypass)) {
+#endif
WARN_ON(parent != dd->clk_bypass);
r = _omap3_noncore_dpll_bypass(clk);
} else {
WARN_ON(parent != dd->clk_ref);
r = _omap3_noncore_dpll_lock(clk);
}
+
+#ifndef CONFIG_COMMON_CLK
/*
*FIXME: this is dubious - if clk->rate has changed, what about
* propagating?
@@ -402,6 +495,7 @@ int omap3_noncore_dpll_enable(struct clk *clk)
if (!r)
clk->rate = (clk->recalc) ? clk->recalc(clk) :
omap2_get_dpll_rate(clk);
+#endif
return r;
}
@@ -413,9 +507,21 @@ int omap3_noncore_dpll_enable(struct clk *clk)
* Instructs a non-CORE DPLL to enter low-power stop. This function is
* intended for use in struct clkops. No return value.
*/
+#ifdef CONFIG_COMMON_CLK
+void omap3_noncore_dpll_disable(struct clk_hw *hw)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+
+ _omap3_noncore_dpll_stop(clk);
+ if (clk->clkdm)
+ clkdm_clk_disable(clk->clkdm, hw->clk);
+#else
void omap3_noncore_dpll_disable(struct clk *clk)
{
_omap3_noncore_dpll_stop(clk);
+ if (clk->clkdm)
+ clkdm_clk_disable(clk->clkdm, clk);
+#endif
}
@@ -432,6 +538,77 @@ void omap3_noncore_dpll_disable(struct clk *clk)
* target rate if it hasn't been done already, then program and lock
* the DPLL. Returns -EINVAL upon error, or 0 upon success.
*/
+#ifdef CONFIG_COMMON_CLK
+int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+ struct clk *new_parent = NULL;
+ u16 freqsel = 0;
+ struct dpll_data *dd;
+ int ret;
+
+ if (!hw || !rate)
+ return -EINVAL;
+
+ dd = clk->dpll_data;
+ if (!dd)
+ return -EINVAL;
+
+ __clk_prepare(dd->clk_bypass);
+ clk_enable(dd->clk_bypass);
+ __clk_prepare(dd->clk_ref);
+ clk_enable(dd->clk_ref);
+
+ if (__clk_get_rate(dd->clk_bypass) == rate &&
+ (dd->modes & (1 << DPLL_LOW_POWER_BYPASS))) {
+ pr_debug("%s: %s: set rate: entering bypass.\n",
+ __func__, __clk_get_name(hw->clk));
+
+ ret = _omap3_noncore_dpll_bypass(clk);
+ if (!ret)
+ new_parent = dd->clk_bypass;
+ } else {
+ if (dd->last_rounded_rate != rate)
+ rate = __clk_round_rate(hw->clk, rate);
+
+ if (dd->last_rounded_rate == 0)
+ return -EINVAL;
+
+ /* No freqsel on OMAP4 and OMAP3630 */
+ if (!cpu_is_omap44xx() && !cpu_is_omap3630()) {
+ freqsel = _omap3_dpll_compute_freqsel(clk,
+ dd->last_rounded_n);
+ if (!freqsel)
+ WARN_ON(1);
+ }
+
+ pr_debug("%s: %s: set rate: locking rate to %lu.\n",
+ __func__, __clk_get_name(hw->clk), rate);
+
+ ret = omap3_noncore_dpll_program(clk, dd->last_rounded_m,
+ dd->last_rounded_n, freqsel);
+ if (!ret)
+ new_parent = dd->clk_ref;
+ }
+ /*
+ * FIXME - this is all wrong. common code handles reparenting and
+ * migrating prepare/enable counts. dplls should be a multiplexer
+ * clock and this should be a set_parent operation so that all of that
+ * stuff is inherited for free
+ */
+
+ if (!ret)
+ __clk_reparent(hw->clk, new_parent);
+
+ clk_disable(dd->clk_ref);
+ __clk_unprepare(dd->clk_ref);
+ clk_disable(dd->clk_bypass);
+ __clk_unprepare(dd->clk_bypass);
+
+ return 0;
+}
+#else
int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
{
struct clk *new_parent = NULL;
@@ -509,6 +686,7 @@ int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
return 0;
}
+#endif
/* DPLL autoidle read/set code */
@@ -520,7 +698,11 @@ int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
* -EINVAL if passed a null pointer or if the struct clk does not
* appear to refer to a DPLL.
*/
+#ifdef CONFIG_COMMON_CLK
+u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk)
+#else
u32 omap3_dpll_autoidle_read(struct clk *clk)
+#endif
{
const struct dpll_data *dd;
u32 v;
@@ -549,7 +731,11 @@ u32 omap3_dpll_autoidle_read(struct clk *clk)
* OMAP3430. The DPLL will enter low-power stop when its downstream
* clocks are gated. No return value.
*/
+#ifdef CONFIG_COMMON_CLK
+void omap3_dpll_allow_idle(struct clk_hw_omap *clk)
+#else
void omap3_dpll_allow_idle(struct clk *clk)
+#endif
{
const struct dpll_data *dd;
u32 v;
@@ -560,8 +746,10 @@ void omap3_dpll_allow_idle(struct clk *clk)
dd = clk->dpll_data;
if (!dd->autoidle_reg) {
+#ifndef CONFIG_COMMON_CLK
pr_debug("clock: DPLL %s: autoidle not supported\n",
__clk_get_name(clk));
+#endif
return;
}
@@ -583,7 +771,11 @@ void omap3_dpll_allow_idle(struct clk *clk)
*
* Disable DPLL automatic idle control. No return value.
*/
+#ifdef CONFIG_COMMON_CLK
+void omap3_dpll_deny_idle(struct clk_hw_omap *clk)
+#else
void omap3_dpll_deny_idle(struct clk *clk)
+#endif
{
const struct dpll_data *dd;
u32 v;
@@ -594,8 +786,10 @@ void omap3_dpll_deny_idle(struct clk *clk)
dd = clk->dpll_data;
if (!dd->autoidle_reg) {
+#ifndef CONFIG_COMMON_CLK
pr_debug("clock: DPLL %s: autoidle not supported\n",
__clk_get_name(clk));
+#endif
return;
}
@@ -615,6 +809,27 @@ void omap3_dpll_deny_idle(struct clk *clk)
* Using parent clock DPLL data, look up DPLL state. If locked, set our
* rate to the dpll_clk * 2; otherwise, just use dpll_clk.
*/
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ const struct dpll_data *dd;
+ unsigned long rate;
+ u32 v;
+ struct clk_hw_omap *pclk = NULL;
+ struct clk *parent;
+
+ /* Walk up the parents of clk, looking for a DPLL */
+ do {
+ do {
+ parent = __clk_get_parent(hw->clk);
+ hw = __clk_get_hw(parent);
+ } while (hw && (__clk_get_flags(hw->clk) & CLK_IS_BASIC));
+ if (!hw)
+ break;
+ pclk = to_clk_hw_omap(hw);
+ } while (pclk && !pclk->dpll_data);
+#else
unsigned long omap3_clkoutx2_recalc(struct clk *clk)
{
const struct dpll_data *dd;
@@ -628,6 +843,8 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk)
while (pclk && !pclk->dpll_data)
pclk = __clk_get_parent(pclk);
+ parent_rate = __clk_get_rate(__clk_get_parent(clk));
+#endif
/* clk does not have a DPLL as a parent? error in the clock data */
if (!pclk) {
WARN_ON(1);
@@ -638,7 +855,6 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk)
WARN_ON(!dd->enable_mask);
- parent_rate = __clk_get_rate(__clk_get_parent(clk));
v = __raw_readl(dd->control_reg) & dd->enable_mask;
v >>= __ffs(dd->enable_mask);
if ((v != OMAP3XXX_EN_DPLL_LOCKED) || (dd->flags & DPLL_J_TYPE))
@@ -649,7 +865,12 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk)
}
/* OMAP3/4 non-CORE DPLL clkops */
-
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap3_dpll = {
+ .allow_idle = omap3_dpll_allow_idle,
+ .deny_idle = omap3_dpll_deny_idle,
+};
+#else
const struct clkops clkops_omap3_noncore_dpll_ops = {
.enable = omap3_noncore_dpll_enable,
.disable = omap3_noncore_dpll_disable,
@@ -661,3 +882,4 @@ const struct clkops clkops_omap3_core_dpll_ops = {
.allow_idle = omap3_dpll_allow_idle,
.deny_idle = omap3_dpll_deny_idle,
};
+#endif
diff --git a/arch/arm/mach-omap2/dpll44xx.c b/arch/arm/mach-omap2/dpll44xx.c
index 5854da1..aa75a3c 100644
--- a/arch/arm/mach-omap2/dpll44xx.c
+++ b/arch/arm/mach-omap2/dpll44xx.c
@@ -21,7 +21,11 @@
#include "cm-regbits-44xx.h"
/* Supported only on OMAP4 */
+#ifdef CONFIG_COMMON_CLK
+int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk)
+#else
int omap4_dpllmx_gatectrl_read(struct clk *clk)
+#endif
{
u32 v;
u32 mask;
@@ -40,7 +44,11 @@ int omap4_dpllmx_gatectrl_read(struct clk *clk)
return v;
}
+#ifdef CONFIG_COMMON_CLK
+void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk)
+#else
void omap4_dpllmx_allow_gatectrl(struct clk *clk)
+#endif
{
u32 v;
u32 mask;
@@ -58,7 +66,11 @@ void omap4_dpllmx_allow_gatectrl(struct clk *clk)
__raw_writel(v, clk->clksel_reg);
}
+#ifdef CONFIG_COMMON_CLK
+void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk)
+#else
void omap4_dpllmx_deny_gatectrl(struct clk *clk)
+#endif
{
u32 v;
u32 mask;
@@ -76,10 +88,17 @@ void omap4_dpllmx_deny_gatectrl(struct clk *clk)
__raw_writel(v, clk->clksel_reg);
}
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap4_dpllmx = {
+ .allow_idle = omap4_dpllmx_allow_gatectrl,
+ .deny_idle = omap4_dpllmx_deny_gatectrl,
+};
+#else
const struct clkops clkops_omap4_dpllmx_ops = {
.allow_idle = omap4_dpllmx_allow_gatectrl,
.deny_idle = omap4_dpllmx_deny_gatectrl,
};
+#endif
/**
* omap4_dpll_regm4xen_recalc - compute DPLL rate, considering REGM4XEN bit
@@ -90,8 +109,15 @@ const struct clkops clkops_omap4_dpllmx_ops = {
* OMAP4 ABE DPLL. Returns the DPLL's output rate (before M-dividers)
* upon success, or 0 upon error.
*/
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk)
{
+#endif
u32 v;
unsigned long rate;
struct dpll_data *dd;
@@ -123,8 +149,16 @@ unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk)
* M-dividers) upon success, -EINVAL if @clk is null or not a DPLL, or
* ~0 if an error occurred in omap2_dpll_round_rate().
*/
+#ifdef CONFIG_COMMON_CLK
+long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
+ unsigned long target_rate,
+ unsigned long *parent_rate)
+{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate)
{
+#endif
u32 v;
struct dpll_data *dd;
long r;
@@ -140,7 +174,11 @@ long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate)
if (v)
target_rate = target_rate / OMAP4430_REGM4XEN_MULT;
+#ifdef CONFIG_COMMON_CLK
+ r = omap2_dpll_round_rate(hw, target_rate, NULL);
+#else
r = omap2_dpll_round_rate(clk, target_rate);
+#endif
if (r == ~0)
return r;
--
1.7.10.4
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