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Commit 1bdf0232 authored by Boris Brezillon's avatar Boris Brezillon Committed by Alexandre Belloni
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clk: at91: make use of syscon/regmap internally 

Use the regmap coming from syscon to access the registers instead of using
pmc_read/pmc_write. This allows to avoid passing the at91_pmc structure to
the child nodes of the PMC.

The final benefit is to have each clock register itself instead of having
to iterate over the children.
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent 863a81c3
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Showing with 694 additions and 694 deletions
drivers/clk/at91/clk-generated.c
View file @ 1bdf0232
......@@ -17,6 +17,8 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -28,8 +30,9 @@
struct clk_generated {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
struct clk_range range;
spinlock_t *lock;
u32 id;
u32 gckdiv;
u8 parent_id;
......@@ -41,49 +44,52 @@ struct clk_generated {
static int clk_generated_enable(struct clk_hw *hw)
{
struct clk_generated *gck = to_clk_generated(hw);
struct at91_pmc *pmc = gck->pmc;
u32 tmp;
unsigned long flags;
pr_debug("GCLK: %s, gckdiv = %d, parent id = %d\n",
__func__, gck->gckdiv, gck->parent_id);
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (gck->id & AT91_PMC_PCR_PID_MASK));
tmp = pmc_read(pmc, AT91_PMC_PCR) &
~(AT91_PMC_PCR_GCKDIV_MASK | AT91_PMC_PCR_GCKCSS_MASK);
pmc_write(pmc, AT91_PMC_PCR, tmp | AT91_PMC_PCR_GCKCSS(gck->parent_id)
| AT91_PMC_PCR_CMD
| AT91_PMC_PCR_GCKDIV(gck->gckdiv)
| AT91_PMC_PCR_GCKEN);
pmc_unlock(pmc);
spin_lock_irqsave(gck->lock, flags);
regmap_write(gck->regmap, AT91_PMC_PCR,
(gck->id & AT91_PMC_PCR_PID_MASK));
regmap_update_bits(gck->regmap, AT91_PMC_PCR,
AT91_PMC_PCR_GCKDIV_MASK | AT91_PMC_PCR_GCKCSS_MASK |
AT91_PMC_PCR_CMD | AT91_PMC_PCR_GCKEN,
AT91_PMC_PCR_GCKCSS(gck->parent_id) |
AT91_PMC_PCR_CMD |
AT91_PMC_PCR_GCKDIV(gck->gckdiv) |
AT91_PMC_PCR_GCKEN);
spin_unlock_irqrestore(gck->lock, flags);
return 0;
}
static void clk_generated_disable(struct clk_hw *hw)
{
struct clk_generated *gck = to_clk_generated(hw);
struct at91_pmc *pmc = gck->pmc;
u32 tmp;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (gck->id & AT91_PMC_PCR_PID_MASK));
tmp = pmc_read(pmc, AT91_PMC_PCR) & ~AT91_PMC_PCR_GCKEN;
pmc_write(pmc, AT91_PMC_PCR, tmp | AT91_PMC_PCR_CMD);
pmc_unlock(pmc);
unsigned long flags;
spin_lock_irqsave(gck->lock, flags);
regmap_write(gck->regmap, AT91_PMC_PCR,
(gck->id & AT91_PMC_PCR_PID_MASK));
regmap_update_bits(gck->regmap, AT91_PMC_PCR,
AT91_PMC_PCR_CMD | AT91_PMC_PCR_GCKEN,
AT91_PMC_PCR_CMD);
spin_unlock_irqrestore(gck->lock, flags);
}
static int clk_generated_is_enabled(struct clk_hw *hw)
{
struct clk_generated *gck = to_clk_generated(hw);
struct at91_pmc *pmc = gck->pmc;
int ret;
unsigned long flags;
unsigned int status;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (gck->id & AT91_PMC_PCR_PID_MASK));
ret = !!(pmc_read(pmc, AT91_PMC_PCR) & AT91_PMC_PCR_GCKEN);
pmc_unlock(pmc);
spin_lock_irqsave(gck->lock, flags);
regmap_write(gck->regmap, AT91_PMC_PCR,
(gck->id & AT91_PMC_PCR_PID_MASK));
regmap_read(gck->regmap, AT91_PMC_PCR, &status);
spin_unlock_irqrestore(gck->lock, flags);
return ret;
return status & AT91_PMC_PCR_GCKEN ? 1 : 0;
}
static unsigned long
......@@ -214,13 +220,14 @@ static const struct clk_ops generated_ops = {
*/
static void clk_generated_startup(struct clk_generated *gck)
{
struct at91_pmc *pmc = gck->pmc;
u32 tmp;
unsigned long flags;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (gck->id & AT91_PMC_PCR_PID_MASK));
tmp = pmc_read(pmc, AT91_PMC_PCR);
pmc_unlock(pmc);
spin_lock_irqsave(gck->lock, flags);
regmap_write(gck->regmap, AT91_PMC_PCR,
(gck->id & AT91_PMC_PCR_PID_MASK));
regmap_read(gck->regmap, AT91_PMC_PCR, &tmp);
spin_unlock_irqrestore(gck->lock, flags);
gck->parent_id = (tmp & AT91_PMC_PCR_GCKCSS_MASK)
>> AT91_PMC_PCR_GCKCSS_OFFSET;
......@@ -229,8 +236,8 @@ static void clk_generated_startup(struct clk_generated *gck)
}
static struct clk * __init
at91_clk_register_generated(struct at91_pmc *pmc, const char *name,
const char **parent_names, u8 num_parents,
at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock, const char
*name, const char **parent_names, u8 num_parents,
u8 id, const struct clk_range *range)
{
struct clk_generated *gck;
......@@ -249,7 +256,8 @@ at91_clk_register_generated(struct at91_pmc *pmc, const char *name,
gck->id = id;
gck->hw.init = &init;
gck->pmc = pmc;
gck->regmap = regmap;
gck->lock = lock;
gck->range = *range;
clk = clk_register(NULL, &gck->hw);
......@@ -261,8 +269,7 @@ at91_clk_register_generated(struct at91_pmc *pmc, const char *name,
return clk;
}
void __init of_sama5d2_clk_generated_setup(struct device_node *np,
struct at91_pmc *pmc)
void __init of_sama5d2_clk_generated_setup(struct device_node *np)
{
int num;
u32 id;
......@@ -272,6 +279,7 @@ void __init of_sama5d2_clk_generated_setup(struct device_node *np,
const char *parent_names[GENERATED_SOURCE_MAX];
struct device_node *gcknp;
struct clk_range range = CLK_RANGE(0, 0);
struct regmap *regmap;
num_parents = of_clk_get_parent_count(np);
if (num_parents <= 0 || num_parents > GENERATED_SOURCE_MAX)
......@@ -283,6 +291,10 @@ void __init of_sama5d2_clk_generated_setup(struct device_node *np,
if (!num || num > PERIPHERAL_MAX)
return;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
for_each_child_of_node(np, gcknp) {
if (of_property_read_u32(gcknp, "reg", &id))
continue;
......@@ -296,11 +308,14 @@ void __init of_sama5d2_clk_generated_setup(struct device_node *np,
of_at91_get_clk_range(gcknp, "atmel,clk-output-range",
&range);
clk = at91_clk_register_generated(pmc, name, parent_names,
num_parents, id, &range);
clk = at91_clk_register_generated(regmap, &pmc_pcr_lock, name,
parent_names, num_parents,
id, &range);
if (IS_ERR(clk))
continue;
of_clk_add_provider(gcknp, of_clk_src_simple_get, clk);
}
}
CLK_OF_DECLARE(of_sama5d2_clk_generated_setup, "atmel,sama5d2-clk-generated",
of_sama5d2_clk_generated_setup);
drivers/clk/at91/clk-h32mx.c
View file @ 1bdf0232
......@@ -24,6 +24,8 @@
#include <linux/irq.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include "pmc.h"
......@@ -31,7 +33,7 @@
struct clk_sama5d4_h32mx {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
};
#define to_clk_sama5d4_h32mx(hw) container_of(hw, struct clk_sama5d4_h32mx, hw)
......@@ -40,8 +42,10 @@ static unsigned long clk_sama5d4_h32mx_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_sama5d4_h32mx *h32mxclk = to_clk_sama5d4_h32mx(hw);
unsigned int mckr;
if (pmc_read(h32mxclk->pmc, AT91_PMC_MCKR) & AT91_PMC_H32MXDIV)
regmap_read(h32mxclk->regmap, AT91_PMC_MCKR, &mckr);
if (mckr & AT91_PMC_H32MXDIV)
return parent_rate / 2;
if (parent_rate > H32MX_MAX_FREQ)
......@@ -70,18 +74,16 @@ static int clk_sama5d4_h32mx_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_sama5d4_h32mx *h32mxclk = to_clk_sama5d4_h32mx(hw);
struct at91_pmc *pmc = h32mxclk->pmc;
u32 tmp;
u32 mckr = 0;
if (parent_rate != rate && (parent_rate / 2) != rate)
return -EINVAL;
pmc_lock(pmc);
tmp = pmc_read(pmc, AT91_PMC_MCKR) & ~AT91_PMC_H32MXDIV;
if ((parent_rate / 2) == rate)
tmp |= AT91_PMC_H32MXDIV;
pmc_write(pmc, AT91_PMC_MCKR, tmp);
pmc_unlock(pmc);
mckr = AT91_PMC_H32MXDIV;
regmap_update_bits(h32mxclk->regmap, AT91_PMC_MCKR,
AT91_PMC_H32MXDIV, mckr);
return 0;
}
......@@ -92,14 +94,18 @@ static const struct clk_ops h32mx_ops = {
.set_rate = clk_sama5d4_h32mx_set_rate,
};
void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_sama5d4_clk_h32mx_setup(struct device_node *np)
{
struct clk_sama5d4_h32mx *h32mxclk;
struct clk_init_data init;
const char *parent_name;
struct regmap *regmap;
struct clk *clk;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
h32mxclk = kzalloc(sizeof(*h32mxclk), GFP_KERNEL);
if (!h32mxclk)
return;
......@@ -113,7 +119,7 @@ void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
init.flags = CLK_SET_RATE_GATE;
h32mxclk->hw.init = &init;
h32mxclk->pmc = pmc;
h32mxclk->regmap = regmap;
clk = clk_register(NULL, &h32mxclk->hw);
if (!clk) {
......@@ -123,3 +129,5 @@ void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(of_sama5d4_clk_h32mx_setup, "atmel,sama5d4-clk-h32mx",
of_sama5d4_clk_h32mx_setup);
drivers/clk/at91/clk-main.c
View file @ 1bdf0232
This diff is collapsed.
drivers/clk/at91/clk-master.c
View file @ 1bdf0232
......@@ -19,6 +19,8 @@
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -44,7 +46,7 @@ struct clk_master_layout {
struct clk_master {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
unsigned int irq;
wait_queue_head_t wait;
const struct clk_master_layout *layout;
......@@ -60,15 +62,24 @@ static irqreturn_t clk_master_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static inline bool clk_master_ready(struct regmap *regmap)
{
unsigned int status;
regmap_read(regmap, AT91_PMC_SR, &status);
return status & AT91_PMC_MCKRDY ? 1 : 0;
}
static int clk_master_prepare(struct clk_hw *hw)
{
struct clk_master *master = to_clk_master(hw);
struct at91_pmc *pmc = master->pmc;
while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MCKRDY)) {
while (!clk_master_ready(master->regmap)) {
enable_irq(master->irq);
wait_event(master->wait,
pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MCKRDY);
clk_master_ready(master->regmap));
}
return 0;
......@@ -78,7 +89,7 @@ static int clk_master_is_prepared(struct clk_hw *hw)
{
struct clk_master *master = to_clk_master(hw);
return !!(pmc_read(master->pmc, AT91_PMC_SR) & AT91_PMC_MCKRDY);
return clk_master_ready(master->regmap);
}
static unsigned long clk_master_recalc_rate(struct clk_hw *hw,
......@@ -88,18 +99,16 @@ static unsigned long clk_master_recalc_rate(struct clk_hw *hw,
u8 div;
unsigned long rate = parent_rate;
struct clk_master *master = to_clk_master(hw);
struct at91_pmc *pmc = master->pmc;
const struct clk_master_layout *layout = master->layout;
const struct clk_master_characteristics *characteristics =
master->characteristics;
u32 tmp;
unsigned int mckr;
pmc_lock(pmc);
tmp = pmc_read(pmc, AT91_PMC_MCKR) & layout->mask;
pmc_unlock(pmc);
regmap_read(master->regmap, AT91_PMC_MCKR, &mckr);
mckr &= layout->mask;
pres = (tmp >> layout->pres_shift) & MASTER_PRES_MASK;
div = (tmp >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
pres = (mckr >> layout->pres_shift) & MASTER_PRES_MASK;
div = (mckr >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
if (characteristics->have_div3_pres && pres == MASTER_PRES_MAX)
rate /= 3;
......@@ -119,9 +128,11 @@ static unsigned long clk_master_recalc_rate(struct clk_hw *hw,
static u8 clk_master_get_parent(struct clk_hw *hw)
{
struct clk_master *master = to_clk_master(hw);
struct at91_pmc *pmc = master->pmc;
unsigned int mckr;
regmap_read(master->regmap, AT91_PMC_MCKR, &mckr);
return pmc_read(pmc, AT91_PMC_MCKR) & AT91_PMC_CSS;
return mckr & AT91_PMC_CSS;
}
static const struct clk_ops master_ops = {
......@@ -132,7 +143,7 @@ static const struct clk_ops master_ops = {
};
static struct clk * __init
at91_clk_register_master(struct at91_pmc *pmc, unsigned int irq,
at91_clk_register_master(struct regmap *regmap, unsigned int irq,
const char *name, int num_parents,
const char **parent_names,
const struct clk_master_layout *layout,
......@@ -143,7 +154,7 @@ at91_clk_register_master(struct at91_pmc *pmc, unsigned int irq,
struct clk *clk = NULL;
struct clk_init_data init;
if (!pmc || !irq || !name || !num_parents || !parent_names)
if (!name || !num_parents || !parent_names)
return ERR_PTR(-EINVAL);
master = kzalloc(sizeof(*master), GFP_KERNEL);
......@@ -159,7 +170,7 @@ at91_clk_register_master(struct at91_pmc *pmc, unsigned int irq,
master->hw.init = &init;
master->layout = layout;
master->characteristics = characteristics;
master->pmc = pmc;
master->regmap = regmap;
master->irq = irq;
init_waitqueue_head(&master->wait);
irq_set_status_flags(master->irq, IRQ_NOAUTOEN);
......@@ -217,7 +228,7 @@ of_at91_clk_master_get_characteristics(struct device_node *np)
}
static void __init
of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
of_at91_clk_master_setup(struct device_node *np,
const struct clk_master_layout *layout)
{
struct clk *clk;
......@@ -226,6 +237,7 @@ of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
const char *parent_names[MASTER_SOURCE_MAX];
const char *name = np->name;
struct clk_master_characteristics *characteristics;
struct regmap *regmap;
num_parents = of_clk_get_parent_count(np);
if (num_parents <= 0 || num_parents > MASTER_SOURCE_MAX)
......@@ -239,11 +251,15 @@ of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
if (!characteristics)
return;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
irq = irq_of_parse_and_map(np, 0);
if (!irq)
goto out_free_characteristics;
clk = at91_clk_register_master(pmc, irq, name, num_parents,
clk = at91_clk_register_master(regmap, irq, name, num_parents,
parent_names, layout,
characteristics);
if (IS_ERR(clk))
......@@ -256,14 +272,16 @@ of_at91_clk_master_setup(struct device_node *np, struct at91_pmc *pmc,
kfree(characteristics);
}
void __init of_at91rm9200_clk_master_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91rm9200_clk_master_setup(struct device_node *np)
{
of_at91_clk_master_setup(np, pmc, &at91rm9200_master_layout);
of_at91_clk_master_setup(np, &at91rm9200_master_layout);
}
CLK_OF_DECLARE(at91rm9200_clk_master, "atmel,at91rm9200-clk-master",
of_at91rm9200_clk_master_setup);
void __init of_at91sam9x5_clk_master_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9x5_clk_master_setup(struct device_node *np)
{
of_at91_clk_master_setup(np, pmc, &at91sam9x5_master_layout);
of_at91_clk_master_setup(np, &at91sam9x5_master_layout);
}
CLK_OF_DECLARE(at91sam9x5_clk_master, "atmel,at91sam9x5-clk-master",
of_at91sam9x5_clk_master_setup);
drivers/clk/at91/clk-peripheral.c
View file @ 1bdf0232
......@@ -14,9 +14,13 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
DEFINE_SPINLOCK(pmc_pcr_lock);
#define PERIPHERAL_MAX 64
#define PERIPHERAL_AT91RM9200 0
......@@ -33,7 +37,7 @@
struct clk_peripheral {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
u32 id;
};
......@@ -41,8 +45,9 @@ struct clk_peripheral {
struct clk_sam9x5_peripheral {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
struct clk_range range;
spinlock_t *lock;
u32 id;
u32 div;
bool auto_div;
......@@ -54,7 +59,6 @@ struct clk_sam9x5_peripheral {
static int clk_peripheral_enable(struct clk_hw *hw)
{
struct clk_peripheral *periph = to_clk_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
int offset = AT91_PMC_PCER;
u32 id = periph->id;
......@@ -62,14 +66,14 @@ static int clk_peripheral_enable(struct clk_hw *hw)
return 0;
if (id > PERIPHERAL_ID_MAX)
offset = AT91_PMC_PCER1;
pmc_write(pmc, offset, PERIPHERAL_MASK(id));
regmap_write(periph->regmap, offset, PERIPHERAL_MASK(id));
return 0;
}
static void clk_peripheral_disable(struct clk_hw *hw)
{
struct clk_peripheral *periph = to_clk_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
int offset = AT91_PMC_PCDR;
u32 id = periph->id;
......@@ -77,21 +81,23 @@ static void clk_peripheral_disable(struct clk_hw *hw)
return;
if (id > PERIPHERAL_ID_MAX)
offset = AT91_PMC_PCDR1;
pmc_write(pmc, offset, PERIPHERAL_MASK(id));
regmap_write(periph->regmap, offset, PERIPHERAL_MASK(id));
}
static int clk_peripheral_is_enabled(struct clk_hw *hw)
{
struct clk_peripheral *periph = to_clk_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
int offset = AT91_PMC_PCSR;
unsigned int status;
u32 id = periph->id;
if (id < PERIPHERAL_ID_MIN)
return 1;
if (id > PERIPHERAL_ID_MAX)
offset = AT91_PMC_PCSR1;
return !!(pmc_read(pmc, offset) & PERIPHERAL_MASK(id));
regmap_read(periph->regmap, offset, &status);
return status & PERIPHERAL_MASK(id) ? 1 : 0;
}
static const struct clk_ops peripheral_ops = {
......@@ -101,14 +107,14 @@ static const struct clk_ops peripheral_ops = {
};
static struct clk * __init
at91_clk_register_peripheral(struct at91_pmc *pmc, const char *name,
at91_clk_register_peripheral(struct regmap *regmap, const char *name,
const char *parent_name, u32 id)
{
struct clk_peripheral *periph;
struct clk *clk = NULL;
struct clk_init_data init;
if (!pmc || !name || !parent_name || id > PERIPHERAL_ID_MAX)
if (!name || !parent_name || id > PERIPHERAL_ID_MAX)
return ERR_PTR(-EINVAL);
periph = kzalloc(sizeof(*periph), GFP_KERNEL);
......@@ -123,7 +129,7 @@ at91_clk_register_peripheral(struct at91_pmc *pmc, const char *name,
periph->id = id;
periph->hw.init = &init;
periph->pmc = pmc;
periph->regmap = regmap;
clk = clk_register(NULL, &periph->hw);
if (IS_ERR(clk))
......@@ -160,53 +166,58 @@ static void clk_sam9x5_peripheral_autodiv(struct clk_sam9x5_peripheral *periph)
static int clk_sam9x5_peripheral_enable(struct clk_hw *hw)
{
struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
u32 tmp;
unsigned long flags;
if (periph->id < PERIPHERAL_ID_MIN)
return 0;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID_MASK));
tmp = pmc_read(pmc, AT91_PMC_PCR) & ~AT91_PMC_PCR_DIV_MASK;
pmc_write(pmc, AT91_PMC_PCR, tmp | AT91_PMC_PCR_DIV(periph->div)
| AT91_PMC_PCR_CMD
| AT91_PMC_PCR_EN);
pmc_unlock(pmc);
spin_lock_irqsave(periph->lock, flags);
regmap_write(periph->regmap, AT91_PMC_PCR,
(periph->id & AT91_PMC_PCR_PID_MASK));
regmap_update_bits(periph->regmap, AT91_PMC_PCR,
AT91_PMC_PCR_DIV_MASK | AT91_PMC_PCR_CMD |
AT91_PMC_PCR_EN,
AT91_PMC_PCR_DIV(periph->div) |
AT91_PMC_PCR_CMD |
AT91_PMC_PCR_EN);
spin_unlock_irqrestore(periph->lock, flags);
return 0;
}
static void clk_sam9x5_peripheral_disable(struct clk_hw *hw)
{
struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
u32 tmp;
unsigned long flags;
if (periph->id < PERIPHERAL_ID_MIN)
return;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID_MASK));
tmp = pmc_read(pmc, AT91_PMC_PCR) & ~AT91_PMC_PCR_EN;
pmc_write(pmc, AT91_PMC_PCR, tmp | AT91_PMC_PCR_CMD);
pmc_unlock(pmc);
spin_lock_irqsave(periph->lock, flags);
regmap_write(periph->regmap, AT91_PMC_PCR,
(periph->id & AT91_PMC_PCR_PID_MASK));
regmap_update_bits(periph->regmap, AT91_PMC_PCR,
AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD,
AT91_PMC_PCR_CMD);
spin_unlock_irqrestore(periph->lock, flags);
}
static int clk_sam9x5_peripheral_is_enabled(struct clk_hw *hw)
{
struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
int ret;
unsigned long flags;
unsigned int status;
if (periph->id < PERIPHERAL_ID_MIN)
return 1;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID_MASK));
ret = !!(pmc_read(pmc, AT91_PMC_PCR) & AT91_PMC_PCR_EN);
pmc_unlock(pmc);
spin_lock_irqsave(periph->lock, flags);
regmap_write(periph->regmap, AT91_PMC_PCR,
(periph->id & AT91_PMC_PCR_PID_MASK));
regmap_read(periph->regmap, AT91_PMC_PCR, &status);
spin_unlock_irqrestore(periph->lock, flags);
return ret;
return status & AT91_PMC_PCR_EN ? 1 : 0;
}
static unsigned long
......@@ -214,19 +225,20 @@ clk_sam9x5_peripheral_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
struct at91_pmc *pmc = periph->pmc;
u32 tmp;
unsigned long flags;
unsigned int status;
if (periph->id < PERIPHERAL_ID_MIN)
return parent_rate;
pmc_lock(pmc);
pmc_write(pmc, AT91_PMC_PCR, (periph->id & AT91_PMC_PCR_PID_MASK));
tmp = pmc_read(pmc, AT91_PMC_PCR);
pmc_unlock(pmc);
spin_lock_irqsave(periph->lock, flags);
regmap_write(periph->regmap, AT91_PMC_PCR,
(periph->id & AT91_PMC_PCR_PID_MASK));
regmap_read(periph->regmap, AT91_PMC_PCR, &status);
spin_unlock_irqrestore(periph->lock, flags);
if (tmp & AT91_PMC_PCR_EN) {
periph->div = PERIPHERAL_RSHIFT(tmp);
if (status & AT91_PMC_PCR_EN) {
periph->div = PERIPHERAL_RSHIFT(status);
periph->auto_div = false;
} else {
clk_sam9x5_peripheral_autodiv(periph);
......@@ -318,15 +330,15 @@ static const struct clk_ops sam9x5_peripheral_ops = {
};
static struct clk * __init
at91_clk_register_sam9x5_peripheral(struct at91_pmc *pmc, const char *name,
const char *parent_name, u32 id,
const struct clk_range *range)
at91_clk_register_sam9x5_peripheral(struct regmap *regmap, spinlock_t *lock,
const char *name, const char *parent_name,
u32 id, const struct clk_range *range)
{
struct clk_sam9x5_peripheral *periph;
struct clk *clk = NULL;
struct clk_init_data init;
if (!pmc || !name || !parent_name)
if (!name || !parent_name)
return ERR_PTR(-EINVAL);
periph = kzalloc(sizeof(*periph), GFP_KERNEL);
......@@ -342,7 +354,8 @@ at91_clk_register_sam9x5_peripheral(struct at91_pmc *pmc, const char *name,
periph->id = id;
periph->hw.init = &init;
periph->div = 0;
periph->pmc = pmc;
periph->regmap = regmap;
periph->lock = lock;
periph->auto_div = true;
periph->range = *range;
......@@ -356,7 +369,7 @@ at91_clk_register_sam9x5_peripheral(struct at91_pmc *pmc, const char *name,
}
static void __init
of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
of_at91_clk_periph_setup(struct device_node *np, u8 type)
{
int num;
u32 id;
......@@ -364,6 +377,7 @@ of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
const char *parent_name;
const char *name;
struct device_node *periphclknp;
struct regmap *regmap;
parent_name = of_clk_get_parent_name(np, 0);
if (!parent_name)
......@@ -373,6 +387,10 @@ of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
if (!num || num > PERIPHERAL_MAX)
return;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
for_each_child_of_node(np, periphclknp) {
if (of_property_read_u32(periphclknp, "reg", &id))
continue;
......@@ -384,7 +402,7 @@ of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
name = periphclknp->name;
if (type == PERIPHERAL_AT91RM9200) {
clk = at91_clk_register_peripheral(pmc, name,
clk = at91_clk_register_peripheral(regmap, name,
parent_name, id);
} else {
struct clk_range range = CLK_RANGE(0, 0);
......@@ -393,7 +411,9 @@ of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
"atmel,clk-output-range",
&range);
clk = at91_clk_register_sam9x5_peripheral(pmc, name,
clk = at91_clk_register_sam9x5_peripheral(regmap,
&pmc_pcr_lock,
name,
parent_name,
id, &range);
}
......@@ -405,14 +425,17 @@ of_at91_clk_periph_setup(struct device_node *np, struct at91_pmc *pmc, u8 type)
}
}
void __init of_at91rm9200_clk_periph_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91rm9200_clk_periph_setup(struct device_node *np)
{
of_at91_clk_periph_setup(np, pmc, PERIPHERAL_AT91RM9200);
of_at91_clk_periph_setup(np, PERIPHERAL_AT91RM9200);
}
CLK_OF_DECLARE(at91rm9200_clk_periph, "atmel,at91rm9200-clk-peripheral",
of_at91rm9200_clk_periph_setup);
void __init of_at91sam9x5_clk_periph_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9x5_clk_periph_setup(struct device_node *np)
{
of_at91_clk_periph_setup(np, pmc, PERIPHERAL_AT91SAM9X5);
of_at91_clk_periph_setup(np, PERIPHERAL_AT91SAM9X5);
}
CLK_OF_DECLARE(at91sam9x5_clk_periph, "atmel,at91sam9x5-clk-peripheral",
of_at91sam9x5_clk_periph_setup);
drivers/clk/at91/clk-pll.c
View file @ 1bdf0232
......@@ -20,6 +20,8 @@
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -58,7 +60,7 @@ struct clk_pll_layout {
struct clk_pll {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
unsigned int irq;
wait_queue_head_t wait;
u8 id;
......@@ -79,10 +81,19 @@ static irqreturn_t clk_pll_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static inline bool clk_pll_ready(struct regmap *regmap, int id)
{
unsigned int status;
regmap_read(regmap, AT91_PMC_SR, &status);
return status & PLL_STATUS_MASK(id) ? 1 : 0;
}
static int clk_pll_prepare(struct clk_hw *hw)
{
struct clk_pll *pll = to_clk_pll(hw);
struct at91_pmc *pmc = pll->pmc;
struct regmap *regmap = pll->regmap;
const struct clk_pll_layout *layout = pll->layout;
const struct clk_pll_characteristics *characteristics =
pll->characteristics;
......@@ -90,38 +101,36 @@ static int clk_pll_prepare(struct clk_hw *hw)
u32 mask = PLL_STATUS_MASK(id);
int offset = PLL_REG(id);
u8 out = 0;
u32 pllr, icpr;
unsigned int pllr;
unsigned int status;
u8 div;
u16 mul;
pllr = pmc_read(pmc, offset);
regmap_read(regmap, offset, &pllr);
div = PLL_DIV(pllr);
mul = PLL_MUL(pllr, layout);
if ((pmc_read(pmc, AT91_PMC_SR) & mask) &&
regmap_read(regmap, AT91_PMC_SR, &status);
if ((status & mask) &&
(div == pll->div && mul == pll->mul))
return 0;
if (characteristics->out)
out = characteristics->out[pll->range];
if (characteristics->icpll) {
icpr = pmc_read(pmc, AT91_PMC_PLLICPR) & ~PLL_ICPR_MASK(id);
icpr |= (characteristics->icpll[pll->range] <<
PLL_ICPR_SHIFT(id));
pmc_write(pmc, AT91_PMC_PLLICPR, icpr);
}
pllr &= ~layout->pllr_mask;
pllr |= layout->pllr_mask &
(pll->div | (PLL_MAX_COUNT << PLL_COUNT_SHIFT) |
(out << PLL_OUT_SHIFT) |
((pll->mul & layout->mul_mask) << layout->mul_shift));
pmc_write(pmc, offset, pllr);
if (characteristics->icpll)
regmap_update_bits(regmap, AT91_PMC_PLLICPR, PLL_ICPR_MASK(id),
characteristics->icpll[pll->range] << PLL_ICPR_SHIFT(id));
while (!(pmc_read(pmc, AT91_PMC_SR) & mask)) {
regmap_update_bits(regmap, offset, layout->pllr_mask,
pll->div | (PLL_MAX_COUNT << PLL_COUNT_SHIFT) |
(out << PLL_OUT_SHIFT) |
((pll->mul & layout->mul_mask) << layout->mul_shift));
while (!clk_pll_ready(regmap, pll->id)) {
enable_irq(pll->irq);
wait_event(pll->wait,
pmc_read(pmc, AT91_PMC_SR) & mask);
clk_pll_ready(regmap, pll->id));
}
return 0;
......@@ -130,32 +139,35 @@ static int clk_pll_prepare(struct clk_hw *hw)
static int clk_pll_is_prepared(struct clk_hw *hw)
{
struct clk_pll *pll = to_clk_pll(hw);
struct at91_pmc *pmc = pll->pmc;
return !!(pmc_read(pmc, AT91_PMC_SR) &
PLL_STATUS_MASK(pll->id));
return clk_pll_ready(pll->regmap, pll->id);
}
static void clk_pll_unprepare(struct clk_hw *hw)
{
struct clk_pll *pll = to_clk_pll(hw);
struct at91_pmc *pmc = pll->pmc;
const struct clk_pll_layout *layout = pll->layout;
int offset = PLL_REG(pll->id);
u32 tmp = pmc_read(pmc, offset) & ~(layout->pllr_mask);
unsigned int mask = pll->layout->pllr_mask;
pmc_write(pmc, offset, tmp);
regmap_update_bits(pll->regmap, PLL_REG(pll->id), mask, ~mask);
}
static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_pll *pll = to_clk_pll(hw);
unsigned int pllr;
u16 mul;
u8 div;
regmap_read(pll->regmap, PLL_REG(pll->id), &pllr);
div = PLL_DIV(pllr);
mul = PLL_MUL(pllr, pll->layout);
if (!pll->div || !pll->mul)
if (!div || !mul)
return 0;
return (parent_rate / pll->div) * (pll->mul + 1);
return (parent_rate / div) * (mul + 1);
}
static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate,
......@@ -308,7 +320,7 @@ static const struct clk_ops pll_ops = {
};
static struct clk * __init
at91_clk_register_pll(struct at91_pmc *pmc, unsigned int irq, const char *name,
at91_clk_register_pll(struct regmap *regmap, unsigned int irq, const char *name,
const char *parent_name, u8 id,
const struct clk_pll_layout *layout,
const struct clk_pll_characteristics *characteristics)
......@@ -318,7 +330,7 @@ at91_clk_register_pll(struct at91_pmc *pmc, unsigned int irq, const char *name,
struct clk_init_data init;
int ret;
int offset = PLL_REG(id);
u32 tmp;
unsigned int pllr;
if (id > PLL_MAX_ID)
return ERR_PTR(-EINVAL);
......@@ -337,11 +349,11 @@ at91_clk_register_pll(struct at91_pmc *pmc, unsigned int irq, const char *name,
pll->hw.init = &init;
pll->layout = layout;
pll->characteristics = characteristics;
pll->pmc = pmc;
pll->regmap = regmap;
pll->irq = irq;
tmp = pmc_read(pmc, offset) & layout->pllr_mask;
pll->div = PLL_DIV(tmp);
pll->mul = PLL_MUL(tmp, layout);
regmap_read(regmap, offset, &pllr);
pll->div = PLL_DIV(pllr);
pll->mul = PLL_MUL(pllr, layout);
init_waitqueue_head(&pll->wait);
irq_set_status_flags(pll->irq, IRQ_NOAUTOEN);
ret = request_irq(pll->irq, clk_pll_irq_handler, IRQF_TRIGGER_HIGH,
......@@ -483,12 +495,13 @@ of_at91_clk_pll_get_characteristics(struct device_node *np)
}
static void __init
of_at91_clk_pll_setup(struct device_node *np, struct at91_pmc *pmc,
of_at91_clk_pll_setup(struct device_node *np,
const struct clk_pll_layout *layout)
{
u32 id;
unsigned int irq;
struct clk *clk;
struct regmap *regmap;
const char *parent_name;
const char *name = np->name;
struct clk_pll_characteristics *characteristics;
......@@ -500,6 +513,10 @@ of_at91_clk_pll_setup(struct device_node *np, struct at91_pmc *pmc,
of_property_read_string(np, "clock-output-names", &name);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
characteristics = of_at91_clk_pll_get_characteristics(np);
if (!characteristics)
return;
......@@ -508,7 +525,7 @@ of_at91_clk_pll_setup(struct device_node *np, struct at91_pmc *pmc,
if (!irq)
return;
clk = at91_clk_register_pll(pmc, irq, name, parent_name, id, layout,
clk = at91_clk_register_pll(regmap, irq, name, parent_name, id, layout,
characteristics);
if (IS_ERR(clk))
goto out_free_characteristics;
......@@ -520,26 +537,30 @@ of_at91_clk_pll_setup(struct device_node *np, struct at91_pmc *pmc,
kfree(characteristics);
}
void __init of_at91rm9200_clk_pll_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91rm9200_clk_pll_setup(struct device_node *np)
{
of_at91_clk_pll_setup(np, pmc, &at91rm9200_pll_layout);
of_at91_clk_pll_setup(np, &at91rm9200_pll_layout);
}
CLK_OF_DECLARE(at91rm9200_clk_pll, "atmel,at91rm9200-clk-pll",
of_at91rm9200_clk_pll_setup);
void __init of_at91sam9g45_clk_pll_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9g45_clk_pll_setup(struct device_node *np)
{
of_at91_clk_pll_setup(np, pmc, &at91sam9g45_pll_layout);
of_at91_clk_pll_setup(np, &at91sam9g45_pll_layout);
}
CLK_OF_DECLARE(at91sam9g45_clk_pll, "atmel,at91sam9g45-clk-pll",
of_at91sam9g45_clk_pll_setup);
void __init of_at91sam9g20_clk_pllb_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9g20_clk_pllb_setup(struct device_node *np)
{
of_at91_clk_pll_setup(np, pmc, &at91sam9g20_pllb_layout);
of_at91_clk_pll_setup(np, &at91sam9g20_pllb_layout);
}
CLK_OF_DECLARE(at91sam9g20_clk_pllb, "atmel,at91sam9g20-clk-pllb",
of_at91sam9g20_clk_pllb_setup);
void __init of_sama5d3_clk_pll_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_sama5d3_clk_pll_setup(struct device_node *np)
{
of_at91_clk_pll_setup(np, pmc, &sama5d3_pll_layout);
of_at91_clk_pll_setup(np, &sama5d3_pll_layout);
}
CLK_OF_DECLARE(sama5d3_clk_pll, "atmel,sama5d3-clk-pll",
of_sama5d3_clk_pll_setup);
drivers/clk/at91/clk-plldiv.c
View file @ 1bdf0232
......@@ -14,6 +14,8 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -21,16 +23,18 @@
struct clk_plldiv {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
};
static unsigned long clk_plldiv_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_plldiv *plldiv = to_clk_plldiv(hw);
struct at91_pmc *pmc = plldiv->pmc;
unsigned int mckr;
if (pmc_read(pmc, AT91_PMC_MCKR) & AT91_PMC_PLLADIV2)
regmap_read(plldiv->regmap, AT91_PMC_MCKR, &mckr);
if (mckr & AT91_PMC_PLLADIV2)
return parent_rate / 2;
return parent_rate;
......@@ -57,18 +61,12 @@ static int clk_plldiv_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_plldiv *plldiv = to_clk_plldiv(hw);
struct at91_pmc *pmc = plldiv->pmc;
u32 tmp;
if (parent_rate != rate && (parent_rate / 2) != rate)
if ((parent_rate != rate) && (parent_rate / 2 != rate))
return -EINVAL;
pmc_lock(pmc);
tmp = pmc_read(pmc, AT91_PMC_MCKR) & ~AT91_PMC_PLLADIV2;
if ((parent_rate / 2) == rate)
tmp |= AT91_PMC_PLLADIV2;
pmc_write(pmc, AT91_PMC_MCKR, tmp);
pmc_unlock(pmc);
regmap_update_bits(plldiv->regmap, AT91_PMC_MCKR, AT91_PMC_PLLADIV2,
parent_rate != rate ? AT91_PMC_PLLADIV2 : 0);
return 0;
}
......@@ -80,7 +78,7 @@ static const struct clk_ops plldiv_ops = {
};
static struct clk * __init
at91_clk_register_plldiv(struct at91_pmc *pmc, const char *name,
at91_clk_register_plldiv(struct regmap *regmap, const char *name,
const char *parent_name)
{
struct clk_plldiv *plldiv;
......@@ -98,7 +96,7 @@ at91_clk_register_plldiv(struct at91_pmc *pmc, const char *name,
init.flags = CLK_SET_RATE_GATE;
plldiv->hw.init = &init;
plldiv->pmc = pmc;
plldiv->regmap = regmap;
clk = clk_register(NULL, &plldiv->hw);
......@@ -109,27 +107,27 @@ at91_clk_register_plldiv(struct at91_pmc *pmc, const char *name,
}
static void __init
of_at91_clk_plldiv_setup(struct device_node *np, struct at91_pmc *pmc)
of_at91sam9x5_clk_plldiv_setup(struct device_node *np)
{
struct clk *clk;
const char *parent_name;
const char *name = np->name;
struct regmap *regmap;
parent_name = of_clk_get_parent_name(np, 0);
of_property_read_string(np, "clock-output-names", &name);
clk = at91_clk_register_plldiv(pmc, name, parent_name);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
clk = at91_clk_register_plldiv(regmap, name, parent_name);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
return;
}
void __init of_at91sam9x5_clk_plldiv_setup(struct device_node *np,
struct at91_pmc *pmc)
{
of_at91_clk_plldiv_setup(np, pmc);
}
CLK_OF_DECLARE(at91sam9x5_clk_plldiv, "atmel,at91sam9x5-clk-plldiv",
of_at91sam9x5_clk_plldiv_setup);
drivers/clk/at91/clk-programmable.c
View file @ 1bdf0232
......@@ -16,6 +16,8 @@
#include <linux/io.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -24,6 +26,7 @@
#define PROG_STATUS_MASK(id) (1 << ((id) + 8))
#define PROG_PRES_MASK 0x7
#define PROG_PRES(layout, pckr) ((pckr >> layout->pres_shift) & PROG_PRES_MASK)
#define PROG_MAX_RM9200_CSS 3
struct clk_programmable_layout {
......@@ -34,7 +37,7 @@ struct clk_programmable_layout {
struct clk_programmable {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
u8 id;
const struct clk_programmable_layout *layout;
};
......@@ -44,14 +47,12 @@ struct clk_programmable {
static unsigned long clk_programmable_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
u32 pres;
struct clk_programmable *prog = to_clk_programmable(hw);
struct at91_pmc *pmc = prog->pmc;
const struct clk_programmable_layout *layout = prog->layout;
unsigned int pckr;
regmap_read(prog->regmap, AT91_PMC_PCKR(prog->id), &pckr);
pres = (pmc_read(pmc, AT91_PMC_PCKR(prog->id)) >> layout->pres_shift) &
PROG_PRES_MASK;
return parent_rate >> pres;
return parent_rate >> PROG_PRES(prog->layout, pckr);
}
static int clk_programmable_determine_rate(struct clk_hw *hw,
......@@ -101,36 +102,36 @@ static int clk_programmable_set_parent(struct clk_hw *hw, u8 index)
{
struct clk_programmable *prog = to_clk_programmable(hw);
const struct clk_programmable_layout *layout = prog->layout;
struct at91_pmc *pmc = prog->pmc;
u32 tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id)) & ~layout->css_mask;
unsigned int mask = layout->css_mask;
unsigned int pckr = 0;
if (layout->have_slck_mck)
tmp &= AT91_PMC_CSSMCK_MCK;
mask |= AT91_PMC_CSSMCK_MCK;
if (index > layout->css_mask) {
if (index > PROG_MAX_RM9200_CSS && layout->have_slck_mck) {
tmp |= AT91_PMC_CSSMCK_MCK;
return 0;
} else {
if (index > PROG_MAX_RM9200_CSS && !layout->have_slck_mck)
return -EINVAL;
}
pckr |= AT91_PMC_CSSMCK_MCK;
}
pmc_write(pmc, AT91_PMC_PCKR(prog->id), tmp | index);
regmap_update_bits(prog->regmap, AT91_PMC_PCKR(prog->id), mask, pckr);
return 0;
}
static u8 clk_programmable_get_parent(struct clk_hw *hw)
{
u32 tmp;
u8 ret;
struct clk_programmable *prog = to_clk_programmable(hw);
struct at91_pmc *pmc = prog->pmc;
const struct clk_programmable_layout *layout = prog->layout;
unsigned int pckr;
u8 ret;
regmap_read(prog->regmap, AT91_PMC_PCKR(prog->id), &pckr);
ret = pckr & layout->css_mask;
tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id));
ret = tmp & layout->css_mask;
if (layout->have_slck_mck && (tmp & AT91_PMC_CSSMCK_MCK) && !ret)
if (layout->have_slck_mck && (pckr & AT91_PMC_CSSMCK_MCK) && !ret)
ret = PROG_MAX_RM9200_CSS + 1;
return ret;
......@@ -140,26 +141,27 @@ static int clk_programmable_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_programmable *prog = to_clk_programmable(hw);
struct at91_pmc *pmc = prog->pmc;
const struct clk_programmable_layout *layout = prog->layout;
unsigned long div = parent_rate / rate;
unsigned int pckr;
int shift = 0;
u32 tmp = pmc_read(pmc, AT91_PMC_PCKR(prog->id)) &
~(PROG_PRES_MASK << layout->pres_shift);
regmap_read(prog->regmap, AT91_PMC_PCKR(prog->id), &pckr);
if (!div)
return -EINVAL;
shift = fls(div) - 1;
if (div != (1<<shift))
if (div != (1 << shift))
return -EINVAL;
if (shift >= PROG_PRES_MASK)
return -EINVAL;
pmc_write(pmc, AT91_PMC_PCKR(prog->id),
tmp | (shift << layout->pres_shift));
regmap_update_bits(prog->regmap, AT91_PMC_PCKR(prog->id),
PROG_PRES_MASK << layout->pres_shift,
shift << layout->pres_shift);
return 0;
}
......@@ -173,7 +175,7 @@ static const struct clk_ops programmable_ops = {
};
static struct clk * __init
at91_clk_register_programmable(struct at91_pmc *pmc,
at91_clk_register_programmable(struct regmap *regmap,
const char *name, const char **parent_names,
u8 num_parents, u8 id,
const struct clk_programmable_layout *layout)
......@@ -198,7 +200,7 @@ at91_clk_register_programmable(struct at91_pmc *pmc,
prog->id = id;
prog->layout = layout;
prog->hw.init = &init;
prog->pmc = pmc;
prog->regmap = regmap;
clk = clk_register(NULL, &prog->hw);
if (IS_ERR(clk))
......@@ -226,7 +228,7 @@ static const struct clk_programmable_layout at91sam9x5_programmable_layout = {
};
static void __init
of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
of_at91_clk_prog_setup(struct device_node *np,
const struct clk_programmable_layout *layout)
{
int num;
......@@ -236,6 +238,7 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
const char *parent_names[PROG_SOURCE_MAX];
const char *name;
struct device_node *progclknp;
struct regmap *regmap;
num_parents = of_clk_get_parent_count(np);
if (num_parents <= 0 || num_parents > PROG_SOURCE_MAX)
......@@ -247,6 +250,10 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
if (!num || num > (PROG_ID_MAX + 1))
return;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
for_each_child_of_node(np, progclknp) {
if (of_property_read_u32(progclknp, "reg", &id))
continue;
......@@ -254,7 +261,7 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
if (of_property_read_string(np, "clock-output-names", &name))
name = progclknp->name;
clk = at91_clk_register_programmable(pmc, name,
clk = at91_clk_register_programmable(regmap, name,
parent_names, num_parents,
id, layout);
if (IS_ERR(clk))
......@@ -265,20 +272,23 @@ of_at91_clk_prog_setup(struct device_node *np, struct at91_pmc *pmc,
}
void __init of_at91rm9200_clk_prog_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91rm9200_clk_prog_setup(struct device_node *np)
{
of_at91_clk_prog_setup(np, pmc, &at91rm9200_programmable_layout);
of_at91_clk_prog_setup(np, &at91rm9200_programmable_layout);
}
CLK_OF_DECLARE(at91rm9200_clk_prog, "atmel,at91rm9200-clk-programmable",
of_at91rm9200_clk_prog_setup);
void __init of_at91sam9g45_clk_prog_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9g45_clk_prog_setup(struct device_node *np)
{
of_at91_clk_prog_setup(np, pmc, &at91sam9g45_programmable_layout);
of_at91_clk_prog_setup(np, &at91sam9g45_programmable_layout);
}
CLK_OF_DECLARE(at91sam9g45_clk_prog, "atmel,at91sam9g45-clk-programmable",
of_at91sam9g45_clk_prog_setup);
void __init of_at91sam9x5_clk_prog_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9x5_clk_prog_setup(struct device_node *np)
{
of_at91_clk_prog_setup(np, pmc, &at91sam9x5_programmable_layout);
of_at91_clk_prog_setup(np, &at91sam9x5_programmable_layout);
}
CLK_OF_DECLARE(at91sam9x5_clk_prog, "atmel,at91sam9x5-clk-programmable",
of_at91sam9x5_clk_prog_setup);
drivers/clk/at91/clk-slow.c
View file @ 1bdf0232
......@@ -21,6 +21,8 @@
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/sched.h>
#include <linux/wait.h>
......@@ -58,7 +60,7 @@ struct clk_slow_rc_osc {
struct clk_sam9260_slow {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
};
#define to_clk_sam9260_slow(hw) container_of(hw, struct clk_sam9260_slow, hw)
......@@ -388,8 +390,11 @@ void __init of_at91sam9x5_clk_slow_setup(struct device_node *np,
static u8 clk_sam9260_slow_get_parent(struct clk_hw *hw)
{
struct clk_sam9260_slow *slowck = to_clk_sam9260_slow(hw);
unsigned int status;
return !!(pmc_read(slowck->pmc, AT91_PMC_SR) & AT91_PMC_OSCSEL);
regmap_read(slowck->regmap, AT91_PMC_SR, &status);
return status & AT91_PMC_OSCSEL ? 1 : 0;
}
static const struct clk_ops sam9260_slow_ops = {
......@@ -397,7 +402,7 @@ static const struct clk_ops sam9260_slow_ops = {
};
static struct clk * __init
at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
at91_clk_register_sam9260_slow(struct regmap *regmap,
const char *name,
const char **parent_names,
int num_parents)
......@@ -406,7 +411,7 @@ at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
struct clk *clk = NULL;
struct clk_init_data init;
if (!pmc || !name)
if (!name)
return ERR_PTR(-EINVAL);
if (!parent_names || !num_parents)
......@@ -423,7 +428,7 @@ at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
init.flags = 0;
slowck->hw.init = &init;
slowck->pmc = pmc;
slowck->regmap = regmap;
clk = clk_register(NULL, &slowck->hw);
if (IS_ERR(clk))
......@@ -432,26 +437,32 @@ at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
return clk;
}
void __init of_at91sam9260_clk_slow_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9260_clk_slow_setup(struct device_node *np)
{
struct clk *clk;
const char *parent_names[2];
int num_parents;
const char *name = np->name;
struct regmap *regmap;
num_parents = of_clk_get_parent_count(np);
if (num_parents != 2)
return;
of_clk_parent_fill(np, parent_names, num_parents);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
of_property_read_string(np, "clock-output-names", &name);
clk = at91_clk_register_sam9260_slow(pmc, name, parent_names,
clk = at91_clk_register_sam9260_slow(regmap, name, parent_names,
num_parents);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(at91sam9260_clk_slow, "atmel,at91sam9260-clk-slow",
of_at91sam9260_clk_slow_setup);
drivers/clk/at91/clk-smd.c
View file @ 1bdf0232
......@@ -14,6 +14,8 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -24,7 +26,7 @@
struct at91sam9x5_clk_smd {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
};
#define to_at91sam9x5_clk_smd(hw) \
......@@ -33,13 +35,13 @@ struct at91sam9x5_clk_smd {
static unsigned long at91sam9x5_clk_smd_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
u32 tmp;
u8 smddiv;
struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
struct at91_pmc *pmc = smd->pmc;
unsigned int smdr;
u8 smddiv;
regmap_read(smd->regmap, AT91_PMC_SMD, &smdr);
smddiv = (smdr & AT91_PMC_SMD_DIV) >> SMD_DIV_SHIFT;
tmp = pmc_read(pmc, AT91_PMC_SMD);
smddiv = (tmp & AT91_PMC_SMD_DIV) >> SMD_DIV_SHIFT;
return parent_rate / (smddiv + 1);
}
......@@ -67,40 +69,38 @@ static long at91sam9x5_clk_smd_round_rate(struct clk_hw *hw, unsigned long rate,
static int at91sam9x5_clk_smd_set_parent(struct clk_hw *hw, u8 index)
{
u32 tmp;
struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
struct at91_pmc *pmc = smd->pmc;
if (index > 1)
return -EINVAL;
tmp = pmc_read(pmc, AT91_PMC_SMD) & ~AT91_PMC_SMDS;
if (index)
tmp |= AT91_PMC_SMDS;
pmc_write(pmc, AT91_PMC_SMD, tmp);
regmap_update_bits(smd->regmap, AT91_PMC_SMD, AT91_PMC_SMDS,
index ? AT91_PMC_SMDS : 0);
return 0;
}
static u8 at91sam9x5_clk_smd_get_parent(struct clk_hw *hw)
{
struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
struct at91_pmc *pmc = smd->pmc;
unsigned int smdr;
return pmc_read(pmc, AT91_PMC_SMD) & AT91_PMC_SMDS;
regmap_read(smd->regmap, AT91_PMC_SMD, &smdr);
return smdr & AT91_PMC_SMDS;
}
static int at91sam9x5_clk_smd_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
u32 tmp;
struct at91sam9x5_clk_smd *smd = to_at91sam9x5_clk_smd(hw);
struct at91_pmc *pmc = smd->pmc;
unsigned long div = parent_rate / rate;
if (parent_rate % rate || div < 1 || div > (SMD_MAX_DIV + 1))
return -EINVAL;
tmp = pmc_read(pmc, AT91_PMC_SMD) & ~AT91_PMC_SMD_DIV;
tmp |= (div - 1) << SMD_DIV_SHIFT;
pmc_write(pmc, AT91_PMC_SMD, tmp);
regmap_update_bits(smd->regmap, AT91_PMC_SMD, AT91_PMC_SMD_DIV,
(div - 1) << SMD_DIV_SHIFT);
return 0;
}
......@@ -114,7 +114,7 @@ static const struct clk_ops at91sam9x5_smd_ops = {
};
static struct clk * __init
at91sam9x5_clk_register_smd(struct at91_pmc *pmc, const char *name,
at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
const char **parent_names, u8 num_parents)
{
struct at91sam9x5_clk_smd *smd;
......@@ -132,7 +132,7 @@ at91sam9x5_clk_register_smd(struct at91_pmc *pmc, const char *name,
init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
smd->hw.init = &init;
smd->pmc = pmc;
smd->regmap = regmap;
clk = clk_register(NULL, &smd->hw);
if (IS_ERR(clk))
......@@ -141,13 +141,13 @@ at91sam9x5_clk_register_smd(struct at91_pmc *pmc, const char *name,
return clk;
}
void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9x5_clk_smd_setup(struct device_node *np)
{
struct clk *clk;
int num_parents;
const char *parent_names[SMD_SOURCE_MAX];
const char *name = np->name;
struct regmap *regmap;
num_parents = of_clk_get_parent_count(np);
if (num_parents <= 0 || num_parents > SMD_SOURCE_MAX)
......@@ -157,10 +157,16 @@ void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
of_property_read_string(np, "clock-output-names", &name);
clk = at91sam9x5_clk_register_smd(pmc, name, parent_names,
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
clk = at91sam9x5_clk_register_smd(regmap, name, parent_names,
num_parents);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(at91sam9x5_clk_smd, "atmel,at91sam9x5-clk-smd",
of_at91sam9x5_clk_smd_setup);
drivers/clk/at91/clk-system.c
View file @ 1bdf0232
......@@ -19,6 +19,8 @@
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -29,7 +31,7 @@
#define to_clk_system(hw) container_of(hw, struct clk_system, hw)
struct clk_system {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
unsigned int irq;
wait_queue_head_t wait;
u8 id;
......@@ -49,24 +51,32 @@ static irqreturn_t clk_system_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static inline bool clk_system_ready(struct regmap *regmap, int id)
{
unsigned int status;
regmap_read(regmap, AT91_PMC_SR, &status);
return status & (1 << id) ? 1 : 0;
}
static int clk_system_prepare(struct clk_hw *hw)
{
struct clk_system *sys = to_clk_system(hw);
struct at91_pmc *pmc = sys->pmc;
u32 mask = 1 << sys->id;
pmc_write(pmc, AT91_PMC_SCER, mask);
regmap_write(sys->regmap, AT91_PMC_SCER, 1 << sys->id);
if (!is_pck(sys->id))
return 0;
while (!(pmc_read(pmc, AT91_PMC_SR) & mask)) {
while (!clk_system_ready(sys->regmap, sys->id)) {
if (sys->irq) {
enable_irq(sys->irq);
wait_event(sys->wait,
pmc_read(pmc, AT91_PMC_SR) & mask);
} else
clk_system_ready(sys->regmap, sys->id));
} else {
cpu_relax();
}
}
return 0;
}
......@@ -74,23 +84,26 @@ static int clk_system_prepare(struct clk_hw *hw)
static void clk_system_unprepare(struct clk_hw *hw)
{
struct clk_system *sys = to_clk_system(hw);
struct at91_pmc *pmc = sys->pmc;
pmc_write(pmc, AT91_PMC_SCDR, 1 << sys->id);
regmap_write(sys->regmap, AT91_PMC_SCDR, 1 << sys->id);
}
static int clk_system_is_prepared(struct clk_hw *hw)
{
struct clk_system *sys = to_clk_system(hw);
struct at91_pmc *pmc = sys->pmc;
unsigned int status;
regmap_read(sys->regmap, AT91_PMC_SCSR, &status);
if (!(pmc_read(pmc, AT91_PMC_SCSR) & (1 << sys->id)))
if (!(status & (1 << sys->id)))
return 0;
if (!is_pck(sys->id))
return 1;
return !!(pmc_read(pmc, AT91_PMC_SR) & (1 << sys->id));
regmap_read(sys->regmap, AT91_PMC_SR, &status);
return status & (1 << sys->id) ? 1 : 0;
}
static const struct clk_ops system_ops = {
......@@ -100,7 +113,7 @@ static const struct clk_ops system_ops = {
};
static struct clk * __init
at91_clk_register_system(struct at91_pmc *pmc, const char *name,
at91_clk_register_system(struct regmap *regmap, const char *name,
const char *parent_name, u8 id, int irq)
{
struct clk_system *sys;
......@@ -123,7 +136,7 @@ at91_clk_register_system(struct at91_pmc *pmc, const char *name,
sys->id = id;
sys->hw.init = &init;
sys->pmc = pmc;
sys->regmap = regmap;
sys->irq = irq;
if (irq) {
init_waitqueue_head(&sys->wait);
......@@ -146,8 +159,7 @@ at91_clk_register_system(struct at91_pmc *pmc, const char *name,
return clk;
}
static void __init
of_at91_clk_sys_setup(struct device_node *np, struct at91_pmc *pmc)
static void __init of_at91rm9200_clk_sys_setup(struct device_node *np)
{
int num;
int irq = 0;
......@@ -156,11 +168,16 @@ of_at91_clk_sys_setup(struct device_node *np, struct at91_pmc *pmc)
const char *name;
struct device_node *sysclknp;
const char *parent_name;
struct regmap *regmap;
num = of_get_child_count(np);
if (num > (SYSTEM_MAX_ID + 1))
return;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
for_each_child_of_node(np, sysclknp) {
if (of_property_read_u32(sysclknp, "reg", &id))
continue;
......@@ -173,16 +190,13 @@ of_at91_clk_sys_setup(struct device_node *np, struct at91_pmc *pmc)
parent_name = of_clk_get_parent_name(sysclknp, 0);
clk = at91_clk_register_system(pmc, name, parent_name, id, irq);
clk = at91_clk_register_system(regmap, name, parent_name, id,
irq);
if (IS_ERR(clk))
continue;
of_clk_add_provider(sysclknp, of_clk_src_simple_get, clk);
}
}
void __init of_at91rm9200_clk_sys_setup(struct device_node *np,
struct at91_pmc *pmc)
{
of_at91_clk_sys_setup(np, pmc);
}
CLK_OF_DECLARE(at91rm9200_clk_sys, "atmel,at91rm9200-clk-system",
of_at91rm9200_clk_sys_setup);
drivers/clk/at91/clk-usb.c
View file @ 1bdf0232
......@@ -14,6 +14,8 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -27,7 +29,7 @@
struct at91sam9x5_clk_usb {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
};
#define to_at91sam9x5_clk_usb(hw) \
......@@ -35,7 +37,7 @@ struct at91sam9x5_clk_usb {
struct at91rm9200_clk_usb {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
u32 divisors[4];
};
......@@ -45,13 +47,12 @@ struct at91rm9200_clk_usb {
static unsigned long at91sam9x5_clk_usb_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
u32 tmp;
u8 usbdiv;
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
unsigned int usbr;
u8 usbdiv;
tmp = pmc_read(pmc, AT91_PMC_USB);
usbdiv = (tmp & AT91_PMC_OHCIUSBDIV) >> SAM9X5_USB_DIV_SHIFT;
regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
usbdiv = (usbr & AT91_PMC_OHCIUSBDIV) >> SAM9X5_USB_DIV_SHIFT;
return DIV_ROUND_CLOSEST(parent_rate, (usbdiv + 1));
}
......@@ -109,33 +110,31 @@ static int at91sam9x5_clk_usb_determine_rate(struct clk_hw *hw,
static int at91sam9x5_clk_usb_set_parent(struct clk_hw *hw, u8 index)
{
u32 tmp;
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
if (index > 1)
return -EINVAL;
tmp = pmc_read(pmc, AT91_PMC_USB) & ~AT91_PMC_USBS;
if (index)
tmp |= AT91_PMC_USBS;
pmc_write(pmc, AT91_PMC_USB, tmp);
regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS,
index ? AT91_PMC_USBS : 0);
return 0;
}
static u8 at91sam9x5_clk_usb_get_parent(struct clk_hw *hw)
{
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
unsigned int usbr;
return pmc_read(pmc, AT91_PMC_USB) & AT91_PMC_USBS;
regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
return usbr & AT91_PMC_USBS;
}
static int at91sam9x5_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
u32 tmp;
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
unsigned long div;
if (!rate)
......@@ -145,9 +144,8 @@ static int at91sam9x5_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
if (div > SAM9X5_USB_MAX_DIV + 1 || !div)
return -EINVAL;
tmp = pmc_read(pmc, AT91_PMC_USB) & ~AT91_PMC_OHCIUSBDIV;
tmp |= (div - 1) << SAM9X5_USB_DIV_SHIFT;
pmc_write(pmc, AT91_PMC_USB, tmp);
regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_OHCIUSBDIV,
(div - 1) << SAM9X5_USB_DIV_SHIFT);
return 0;
}
......@@ -163,28 +161,28 @@ static const struct clk_ops at91sam9x5_usb_ops = {
static int at91sam9n12_clk_usb_enable(struct clk_hw *hw)
{
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
pmc_write(pmc, AT91_PMC_USB,
pmc_read(pmc, AT91_PMC_USB) | AT91_PMC_USBS);
regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS,
AT91_PMC_USBS);
return 0;
}
static void at91sam9n12_clk_usb_disable(struct clk_hw *hw)
{
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
pmc_write(pmc, AT91_PMC_USB,
pmc_read(pmc, AT91_PMC_USB) & ~AT91_PMC_USBS);
regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS, 0);
}
static int at91sam9n12_clk_usb_is_enabled(struct clk_hw *hw)
{
struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
unsigned int usbr;
return !!(pmc_read(pmc, AT91_PMC_USB) & AT91_PMC_USBS);
regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
return usbr & AT91_PMC_USBS;
}
static const struct clk_ops at91sam9n12_usb_ops = {
......@@ -197,7 +195,7 @@ static const struct clk_ops at91sam9n12_usb_ops = {
};
static struct clk * __init
at91sam9x5_clk_register_usb(struct at91_pmc *pmc, const char *name,
at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
const char **parent_names, u8 num_parents)
{
struct at91sam9x5_clk_usb *usb;
......@@ -216,7 +214,7 @@ at91sam9x5_clk_register_usb(struct at91_pmc *pmc, const char *name,
CLK_SET_RATE_PARENT;
usb->hw.init = &init;
usb->pmc = pmc;
usb->regmap = regmap;
clk = clk_register(NULL, &usb->hw);
if (IS_ERR(clk))
......@@ -226,7 +224,7 @@ at91sam9x5_clk_register_usb(struct at91_pmc *pmc, const char *name,
}
static struct clk * __init
at91sam9n12_clk_register_usb(struct at91_pmc *pmc, const char *name,
at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
const char *parent_name)
{
struct at91sam9x5_clk_usb *usb;
......@@ -244,7 +242,7 @@ at91sam9n12_clk_register_usb(struct at91_pmc *pmc, const char *name,
init.flags = CLK_SET_RATE_GATE | CLK_SET_RATE_PARENT;
usb->hw.init = &init;
usb->pmc = pmc;
usb->regmap = regmap;
clk = clk_register(NULL, &usb->hw);
if (IS_ERR(clk))
......@@ -257,12 +255,12 @@ static unsigned long at91rm9200_clk_usb_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
u32 tmp;
unsigned int pllbr;
u8 usbdiv;
tmp = pmc_read(pmc, AT91_CKGR_PLLBR);
usbdiv = (tmp & AT91_PMC_USBDIV) >> RM9200_USB_DIV_SHIFT;
regmap_read(usb->regmap, AT91_CKGR_PLLBR, &pllbr);
usbdiv = (pllbr & AT91_PMC_USBDIV) >> RM9200_USB_DIV_SHIFT;
if (usb->divisors[usbdiv])
return parent_rate / usb->divisors[usbdiv];
......@@ -310,10 +308,8 @@ static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
static int at91rm9200_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
u32 tmp;
int i;
struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
struct at91_pmc *pmc = usb->pmc;
unsigned long div;
if (!rate)
......@@ -323,10 +319,10 @@ static int at91rm9200_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
for (i = 0; i < RM9200_USB_DIV_TAB_SIZE; i++) {
if (usb->divisors[i] == div) {
tmp = pmc_read(pmc, AT91_CKGR_PLLBR) &
~AT91_PMC_USBDIV;
tmp |= i << RM9200_USB_DIV_SHIFT;
pmc_write(pmc, AT91_CKGR_PLLBR, tmp);
regmap_update_bits(usb->regmap, AT91_CKGR_PLLBR,
AT91_PMC_USBDIV,
i << RM9200_USB_DIV_SHIFT);
return 0;
}
}
......@@ -341,7 +337,7 @@ static const struct clk_ops at91rm9200_usb_ops = {
};
static struct clk * __init
at91rm9200_clk_register_usb(struct at91_pmc *pmc, const char *name,
at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
const char *parent_name, const u32 *divisors)
{
struct at91rm9200_clk_usb *usb;
......@@ -359,7 +355,7 @@ at91rm9200_clk_register_usb(struct at91_pmc *pmc, const char *name,
init.flags = CLK_SET_RATE_PARENT;
usb->hw.init = &init;
usb->pmc = pmc;
usb->regmap = regmap;
memcpy(usb->divisors, divisors, sizeof(usb->divisors));
clk = clk_register(NULL, &usb->hw);
......@@ -369,13 +365,13 @@ at91rm9200_clk_register_usb(struct at91_pmc *pmc, const char *name,
return clk;
}
void __init of_at91sam9x5_clk_usb_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9x5_clk_usb_setup(struct device_node *np)
{
struct clk *clk;
int num_parents;
const char *parent_names[USB_SOURCE_MAX];
const char *name = np->name;
struct regmap *regmap;
num_parents = of_clk_get_parent_count(np);
if (num_parents <= 0 || num_parents > USB_SOURCE_MAX)
......@@ -385,19 +381,26 @@ void __init of_at91sam9x5_clk_usb_setup(struct device_node *np,
of_property_read_string(np, "clock-output-names", &name);
clk = at91sam9x5_clk_register_usb(pmc, name, parent_names, num_parents);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
clk = at91sam9x5_clk_register_usb(regmap, name, parent_names,
num_parents);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(at91sam9x5_clk_usb, "atmel,at91sam9x5-clk-usb",
of_at91sam9x5_clk_usb_setup);
void __init of_at91sam9n12_clk_usb_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91sam9n12_clk_usb_setup(struct device_node *np)
{
struct clk *clk;
const char *parent_name;
const char *name = np->name;
struct regmap *regmap;
parent_name = of_clk_get_parent_name(np, 0);
if (!parent_name)
......@@ -405,20 +408,26 @@ void __init of_at91sam9n12_clk_usb_setup(struct device_node *np,
of_property_read_string(np, "clock-output-names", &name);
clk = at91sam9n12_clk_register_usb(pmc, name, parent_name);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
clk = at91sam9n12_clk_register_usb(regmap, name, parent_name);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(at91sam9n12_clk_usb, "atmel,at91sam9n12-clk-usb",
of_at91sam9n12_clk_usb_setup);
void __init of_at91rm9200_clk_usb_setup(struct device_node *np,
struct at91_pmc *pmc)
static void __init of_at91rm9200_clk_usb_setup(struct device_node *np)
{
struct clk *clk;
const char *parent_name;
const char *name = np->name;
u32 divisors[4] = {0, 0, 0, 0};
struct regmap *regmap;
parent_name = of_clk_get_parent_name(np, 0);
if (!parent_name)
......@@ -430,9 +439,15 @@ void __init of_at91rm9200_clk_usb_setup(struct device_node *np,
of_property_read_string(np, "clock-output-names", &name);
clk = at91rm9200_clk_register_usb(pmc, name, parent_name, divisors);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
clk = at91rm9200_clk_register_usb(regmap, name, parent_name, divisors);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(at91rm9200_clk_usb, "atmel,at91rm9200-clk-usb",
of_at91rm9200_clk_usb_setup);
drivers/clk/at91/clk-utmi.c
View file @ 1bdf0232
......@@ -19,6 +19,8 @@
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include "pmc.h"
......@@ -26,7 +28,7 @@
struct clk_utmi {
struct clk_hw hw;
struct at91_pmc *pmc;
struct regmap *regmap;
unsigned int irq;
wait_queue_head_t wait;
};
......@@ -43,19 +45,27 @@ static irqreturn_t clk_utmi_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static inline bool clk_utmi_ready(struct regmap *regmap)
{
unsigned int status;
regmap_read(regmap, AT91_PMC_SR, &status);
return status & AT91_PMC_LOCKU;
}
static int clk_utmi_prepare(struct clk_hw *hw)
{
struct clk_utmi *utmi = to_clk_utmi(hw);
struct at91_pmc *pmc = utmi->pmc;
u32 tmp = pmc_read(pmc, AT91_CKGR_UCKR) | AT91_PMC_UPLLEN |
AT91_PMC_UPLLCOUNT | AT91_PMC_BIASEN;
unsigned int uckr = AT91_PMC_UPLLEN | AT91_PMC_UPLLCOUNT |
AT91_PMC_BIASEN;
pmc_write(pmc, AT91_CKGR_UCKR, tmp);
regmap_update_bits(utmi->regmap, AT91_CKGR_UCKR, uckr, uckr);
while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_LOCKU)) {
while (!clk_utmi_ready(utmi->regmap)) {
enable_irq(utmi->irq);
wait_event(utmi->wait,
pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_LOCKU);
clk_utmi_ready(utmi->regmap));
}
return 0;
......@@ -64,18 +74,15 @@ static int clk_utmi_prepare(struct clk_hw *hw)
static int clk_utmi_is_prepared(struct clk_hw *hw)
{
struct clk_utmi *utmi = to_clk_utmi(hw);
struct at91_pmc *pmc = utmi->pmc;
return !!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_LOCKU);
return clk_utmi_ready(utmi->regmap);
}
static void clk_utmi_unprepare(struct clk_hw *hw)
{
struct clk_utmi *utmi = to_clk_utmi(hw);
struct at91_pmc *pmc = utmi->pmc;
u32 tmp = pmc_read(pmc, AT91_CKGR_UCKR) & ~AT91_PMC_UPLLEN;
pmc_write(pmc, AT91_CKGR_UCKR, tmp);
regmap_update_bits(utmi->regmap, AT91_CKGR_UCKR, AT91_PMC_UPLLEN, 0);
}
static unsigned long clk_utmi_recalc_rate(struct clk_hw *hw,
......@@ -93,7 +100,7 @@ static const struct clk_ops utmi_ops = {
};
static struct clk * __init
at91_clk_register_utmi(struct at91_pmc *pmc, unsigned int irq,
at91_clk_register_utmi(struct regmap *regmap, unsigned int irq,
const char *name, const char *parent_name)
{
int ret;
......@@ -112,7 +119,7 @@ at91_clk_register_utmi(struct at91_pmc *pmc, unsigned int irq,
init.flags = CLK_SET_RATE_GATE;
utmi->hw.init = &init;
utmi->pmc = pmc;
utmi->regmap = regmap;
utmi->irq = irq;
init_waitqueue_head(&utmi->wait);
irq_set_status_flags(utmi->irq, IRQ_NOAUTOEN);
......@@ -132,13 +139,13 @@ at91_clk_register_utmi(struct at91_pmc *pmc, unsigned int irq,
return clk;
}
static void __init
of_at91_clk_utmi_setup(struct device_node *np, struct at91_pmc *pmc)
static void __init of_at91sam9x5_clk_utmi_setup(struct device_node *np)
{
unsigned int irq;
struct clk *clk;
const char *parent_name;
const char *name = np->name;
struct regmap *regmap;
parent_name = of_clk_get_parent_name(np, 0);
......@@ -148,16 +155,16 @@ of_at91_clk_utmi_setup(struct device_node *np, struct at91_pmc *pmc)
if (!irq)
return;
clk = at91_clk_register_utmi(pmc, irq, name, parent_name);
regmap = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(regmap))
return;
clk = at91_clk_register_utmi(regmap, irq, name, parent_name);
if (IS_ERR(clk))
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
return;
}
void __init of_at91sam9x5_clk_utmi_setup(struct device_node *np,
struct at91_pmc *pmc)
{
of_at91_clk_utmi_setup(np, pmc);
}
CLK_OF_DECLARE(at91sam9x5_clk_utmi, "atmel,at91sam9x5-clk-utmi",
of_at91sam9x5_clk_utmi_setup);
drivers/clk/at91/pmc.c
View file @ 1bdf0232
......@@ -20,6 +20,7 @@
#include <linux/irqdomain.h>
#include <linux/of_irq.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <asm/proc-fns.h>
......@@ -70,14 +71,14 @@ static void pmc_irq_mask(struct irq_data *d)
{
struct at91_pmc *pmc = irq_data_get_irq_chip_data(d);
pmc_write(pmc, AT91_PMC_IDR, 1 << d->hwirq);
regmap_write(pmc->regmap, AT91_PMC_IDR, 1 << d->hwirq);
}
static void pmc_irq_unmask(struct irq_data *d)
{
struct at91_pmc *pmc = irq_data_get_irq_chip_data(d);
pmc_write(pmc, AT91_PMC_IER, 1 << d->hwirq);
regmap_write(pmc->regmap, AT91_PMC_IER, 1 << d->hwirq);
}
static int pmc_irq_set_type(struct irq_data *d, unsigned type)
......@@ -94,15 +95,15 @@ static void pmc_irq_suspend(struct irq_data *d)
{
struct at91_pmc *pmc = irq_data_get_irq_chip_data(d);
pmc->imr = pmc_read(pmc, AT91_PMC_IMR);
pmc_write(pmc, AT91_PMC_IDR, pmc->imr);
regmap_read(pmc->regmap, AT91_PMC_IMR, &pmc->imr);
regmap_write(pmc->regmap, AT91_PMC_IDR, pmc->imr);
}
static void pmc_irq_resume(struct irq_data *d)
{
struct at91_pmc *pmc = irq_data_get_irq_chip_data(d);
pmc_write(pmc, AT91_PMC_IER, pmc->imr);
regmap_write(pmc->regmap, AT91_PMC_IER, pmc->imr);
}
static struct irq_chip pmc_irq = {
......@@ -161,10 +162,14 @@ static const struct irq_domain_ops pmc_irq_ops = {
static irqreturn_t pmc_irq_handler(int irq, void *data)
{
struct at91_pmc *pmc = (struct at91_pmc *)data;
unsigned int tmpsr, imr;
unsigned long sr;
int n;
sr = pmc_read(pmc, AT91_PMC_SR) & pmc_read(pmc, AT91_PMC_IMR);
regmap_read(pmc->regmap, AT91_PMC_SR, &tmpsr);
regmap_read(pmc->regmap, AT91_PMC_IMR, &imr);
sr = tmpsr & imr;
if (!sr)
return IRQ_NONE;
......@@ -239,17 +244,15 @@ static struct at91_pmc *__init at91_pmc_init(struct device_node *np,
if (!pmc)
return NULL;
spin_lock_init(&pmc->lock);
pmc->regmap = regmap;
pmc->virq = virq;
pmc->caps = caps;
pmc->irqdomain = irq_domain_add_linear(np, 32, &pmc_irq_ops, pmc);
if (!pmc->irqdomain)
goto out_free_pmc;
pmc_write(pmc, AT91_PMC_IDR, 0xffffffff);
regmap_write(pmc->regmap, AT91_PMC_IDR, 0xffffffff);
if (request_irq(pmc->virq, pmc_irq_handler,
IRQF_SHARED | IRQF_COND_SUSPEND, "pmc", pmc))
goto out_remove_irqdomain;
......@@ -264,137 +267,10 @@ static struct at91_pmc *__init at91_pmc_init(struct device_node *np,
return NULL;
}
static const struct of_device_id pmc_clk_ids[] __initconst = {
/* Slow oscillator */
{
.compatible = "atmel,at91sam9260-clk-slow",
.data = of_at91sam9260_clk_slow_setup,
},
/* Main clock */
{
.compatible = "atmel,at91rm9200-clk-main-osc",
.data = of_at91rm9200_clk_main_osc_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-main-rc-osc",
.data = of_at91sam9x5_clk_main_rc_osc_setup,
},
{
.compatible = "atmel,at91rm9200-clk-main",
.data = of_at91rm9200_clk_main_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-main",
.data = of_at91sam9x5_clk_main_setup,
},
/* PLL clocks */
{
.compatible = "atmel,at91rm9200-clk-pll",
.data = of_at91rm9200_clk_pll_setup,
},
{
.compatible = "atmel,at91sam9g45-clk-pll",
.data = of_at91sam9g45_clk_pll_setup,
},
{
.compatible = "atmel,at91sam9g20-clk-pllb",
.data = of_at91sam9g20_clk_pllb_setup,
},
{
.compatible = "atmel,sama5d3-clk-pll",
.data = of_sama5d3_clk_pll_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-plldiv",
.data = of_at91sam9x5_clk_plldiv_setup,
},
/* Master clock */
{
.compatible = "atmel,at91rm9200-clk-master",
.data = of_at91rm9200_clk_master_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-master",
.data = of_at91sam9x5_clk_master_setup,
},
/* System clocks */
{
.compatible = "atmel,at91rm9200-clk-system",
.data = of_at91rm9200_clk_sys_setup,
},
/* Peripheral clocks */
{
.compatible = "atmel,at91rm9200-clk-peripheral",
.data = of_at91rm9200_clk_periph_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-peripheral",
.data = of_at91sam9x5_clk_periph_setup,
},
/* Programmable clocks */
{
.compatible = "atmel,at91rm9200-clk-programmable",
.data = of_at91rm9200_clk_prog_setup,
},
{
.compatible = "atmel,at91sam9g45-clk-programmable",
.data = of_at91sam9g45_clk_prog_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-programmable",
.data = of_at91sam9x5_clk_prog_setup,
},
/* UTMI clock */
#if defined(CONFIG_HAVE_AT91_UTMI)
{
.compatible = "atmel,at91sam9x5-clk-utmi",
.data = of_at91sam9x5_clk_utmi_setup,
},
#endif
/* USB clock */
#if defined(CONFIG_HAVE_AT91_USB_CLK)
{
.compatible = "atmel,at91rm9200-clk-usb",
.data = of_at91rm9200_clk_usb_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-usb",
.data = of_at91sam9x5_clk_usb_setup,
},
{
.compatible = "atmel,at91sam9n12-clk-usb",
.data = of_at91sam9n12_clk_usb_setup,
},
#endif
/* SMD clock */
#if defined(CONFIG_HAVE_AT91_SMD)
{
.compatible = "atmel,at91sam9x5-clk-smd",
.data = of_at91sam9x5_clk_smd_setup,
},
#endif
#if defined(CONFIG_HAVE_AT91_H32MX)
{
.compatible = "atmel,sama5d4-clk-h32mx",
.data = of_sama5d4_clk_h32mx_setup,
},
#endif
#if defined(CONFIG_HAVE_AT91_GENERATED_CLK)
{
.compatible = "atmel,sama5d2-clk-generated",
.data = of_sama5d2_clk_generated_setup,
},
#endif
{ /*sentinel*/ }
};
static void __init of_at91_pmc_setup(struct device_node *np,
const struct at91_pmc_caps *caps)
{
struct at91_pmc *pmc;
struct device_node *childnp;
void (*clk_setup)(struct device_node *, struct at91_pmc *);
const struct of_device_id *clk_id;
void __iomem *regbase = of_iomap(np, 0);
struct regmap *regmap;
int virq;
......@@ -410,13 +286,6 @@ static void __init of_at91_pmc_setup(struct device_node *np,
pmc = at91_pmc_init(np, regmap, regbase, virq, caps);
if (!pmc)
return;
for_each_child_of_node(np, childnp) {
clk_id = of_match_node(pmc_clk_ids, childnp);
if (!clk_id)
continue;
clk_setup = clk_id->data;
clk_setup(childnp, pmc);
}
}
static void __init of_at91rm9200_pmc_setup(struct device_node *np)
......
drivers/clk/at91/pmc.h
View file @ 1bdf0232
......@@ -17,6 +17,8 @@
#include <linux/regmap.h>
#include <linux/spinlock.h>
extern spinlock_t pmc_pcr_lock;
struct clk_range {
unsigned long min;
unsigned long max;
......@@ -31,99 +33,12 @@ struct at91_pmc_caps {
struct at91_pmc {
struct regmap *regmap;
int virq;
spinlock_t lock;
const struct at91_pmc_caps *caps;
struct irq_domain *irqdomain;
u32 imr;
};
static inline void pmc_lock(struct at91_pmc *pmc)
{
spin_lock(&pmc->lock);
}
static inline void pmc_unlock(struct at91_pmc *pmc)
{
spin_unlock(&pmc->lock);
}
static inline u32 pmc_read(struct at91_pmc *pmc, int offset)
{
unsigned int ret = 0;
regmap_read(pmc->regmap, offset, &ret);
return ret;
}
static inline void pmc_write(struct at91_pmc *pmc, int offset, u32 value)
{
regmap_write(pmc->regmap, offset, value);
}
int of_at91_get_clk_range(struct device_node *np, const char *propname,
struct clk_range *range);
void of_at91sam9260_clk_slow_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_main_osc_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_main_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_main_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_pll_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9g45_clk_pll_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9g20_clk_pllb_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_sama5d3_clk_pll_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_plldiv_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_master_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_master_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_sys_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_periph_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_periph_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_prog_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9g45_clk_prog_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_prog_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_utmi_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91rm9200_clk_usb_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_usb_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9n12_clk_usb_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_at91sam9x5_clk_smd_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_sama5d4_clk_h32mx_setup(struct device_node *np,
struct at91_pmc *pmc);
void of_sama5d2_clk_generated_setup(struct device_node *np,
struct at91_pmc *pmc);
#endif /* __PMC_H_ */
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