clk: at91: make use of syscon/regmap internally
authorBoris Brezillon <boris.brezillon@free-electrons.com>
Sun, 7 Sep 2014 06:14:29 +0000 (08:14 +0200)
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>
Wed, 17 Feb 2016 16:52:58 +0000 (17:52 +0100)
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: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
15 files changed:
drivers/clk/at91/clk-generated.c
drivers/clk/at91/clk-h32mx.c
drivers/clk/at91/clk-main.c
drivers/clk/at91/clk-master.c
drivers/clk/at91/clk-peripheral.c
drivers/clk/at91/clk-pll.c
drivers/clk/at91/clk-plldiv.c
drivers/clk/at91/clk-programmable.c
drivers/clk/at91/clk-slow.c
drivers/clk/at91/clk-smd.c
drivers/clk/at91/clk-system.c
drivers/clk/at91/clk-usb.c
drivers/clk/at91/clk-utmi.c
drivers/clk/at91/pmc.c
drivers/clk/at91/pmc.h

index abc80949e1ddbea4bb8a47941f9ab5cf278f3113..5866684a6657f5f15ddf7b8d5c124f358cf84b5f 100644 (file)
@@ -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);
index 61566bcefa53399ab3af07611398af3f114849c7..3fd59b129f9229f91b88e8c6f81b13ddbc9f4096 100644 (file)
@@ -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);
index fd7247deabdc3de9cdf8ab0e4fb67d0c6775ef3e..c1f119748bdc9877f494b6d10f6de28f0065b7c3 100644 (file)
@@ -18,6 +18,8 @@
 #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>
 
@@ -34,7 +36,7 @@
 
 struct clk_main_osc {
        struct clk_hw hw;
-       struct at91_pmc *pmc;
+       struct regmap *regmap;
        unsigned int irq;
        wait_queue_head_t wait;
 };
@@ -43,7 +45,7 @@ struct clk_main_osc {
 
 struct clk_main_rc_osc {
        struct clk_hw hw;
-       struct at91_pmc *pmc;
+       struct regmap *regmap;
        unsigned int irq;
        wait_queue_head_t wait;
        unsigned long frequency;
@@ -54,14 +56,14 @@ struct clk_main_rc_osc {
 
 struct clk_rm9200_main {
        struct clk_hw hw;
-       struct at91_pmc *pmc;
+       struct regmap *regmap;
 };
 
 #define to_clk_rm9200_main(hw) container_of(hw, struct clk_rm9200_main, hw)
 
 struct clk_sam9x5_main {
        struct clk_hw hw;
-       struct at91_pmc *pmc;
+       struct regmap *regmap;
        unsigned int irq;
        wait_queue_head_t wait;
        u8 parent;
@@ -79,25 +81,36 @@ static irqreturn_t clk_main_osc_irq_handler(int irq, void *dev_id)
        return IRQ_HANDLED;
 }
 
+static inline bool clk_main_osc_ready(struct regmap *regmap)
+{
+       unsigned int status;
+
+       regmap_read(regmap, AT91_PMC_SR, &status);
+
+       return status & AT91_PMC_MOSCS;
+}
+
 static int clk_main_osc_prepare(struct clk_hw *hw)
 {
        struct clk_main_osc *osc = to_clk_main_osc(hw);
-       struct at91_pmc *pmc = osc->pmc;
+       struct regmap *regmap = osc->regmap;
        u32 tmp;
 
-       tmp = pmc_read(pmc, AT91_CKGR_MOR) & ~MOR_KEY_MASK;
+       regmap_read(regmap, AT91_CKGR_MOR, &tmp);
+       tmp &= ~MOR_KEY_MASK;
+
        if (tmp & AT91_PMC_OSCBYPASS)
                return 0;
 
        if (!(tmp & AT91_PMC_MOSCEN)) {
                tmp |= AT91_PMC_MOSCEN | AT91_PMC_KEY;
-               pmc_write(pmc, AT91_CKGR_MOR, tmp);
+               regmap_write(regmap, AT91_CKGR_MOR, tmp);
        }
 
-       while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS)) {
+       while (!clk_main_osc_ready(regmap)) {
                enable_irq(osc->irq);
                wait_event(osc->wait,
-                          pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS);
+                          clk_main_osc_ready(regmap));
        }
 
        return 0;
@@ -106,9 +119,10 @@ static int clk_main_osc_prepare(struct clk_hw *hw)
 static void clk_main_osc_unprepare(struct clk_hw *hw)
 {
        struct clk_main_osc *osc = to_clk_main_osc(hw);
-       struct at91_pmc *pmc = osc->pmc;
-       u32 tmp = pmc_read(pmc, AT91_CKGR_MOR);
+       struct regmap *regmap = osc->regmap;
+       u32 tmp;
 
+       regmap_read(regmap, AT91_CKGR_MOR, &tmp);
        if (tmp & AT91_PMC_OSCBYPASS)
                return;
 
@@ -116,20 +130,22 @@ static void clk_main_osc_unprepare(struct clk_hw *hw)
                return;
 
        tmp &= ~(AT91_PMC_KEY | AT91_PMC_MOSCEN);
-       pmc_write(pmc, AT91_CKGR_MOR, tmp | AT91_PMC_KEY);
+       regmap_write(regmap, AT91_CKGR_MOR, tmp | AT91_PMC_KEY);
 }
 
 static int clk_main_osc_is_prepared(struct clk_hw *hw)
 {
        struct clk_main_osc *osc = to_clk_main_osc(hw);
-       struct at91_pmc *pmc = osc->pmc;
-       u32 tmp = pmc_read(pmc, AT91_CKGR_MOR);
+       struct regmap *regmap = osc->regmap;
+       u32 tmp, status;
 
+       regmap_read(regmap, AT91_CKGR_MOR, &tmp);
        if (tmp & AT91_PMC_OSCBYPASS)
                return 1;
 
-       return !!((pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS) &&
-                 (pmc_read(pmc, AT91_CKGR_MOR) & AT91_PMC_MOSCEN));
+       regmap_read(regmap, AT91_PMC_SR, &status);
+
+       return (status & AT91_PMC_MOSCS) && (tmp & AT91_PMC_MOSCEN);
 }
 
 static const struct clk_ops main_osc_ops = {
@@ -139,7 +155,7 @@ static const struct clk_ops main_osc_ops = {
 };
 
 static struct clk * __init
-at91_clk_register_main_osc(struct at91_pmc *pmc,
+at91_clk_register_main_osc(struct regmap *regmap,
                           unsigned int irq,
                           const char *name,
                           const char *parent_name,
@@ -150,7 +166,7 @@ at91_clk_register_main_osc(struct at91_pmc *pmc,
        struct clk *clk = NULL;
        struct clk_init_data init;
 
-       if (!pmc || !irq || !name || !parent_name)
+       if (!irq || !name || !parent_name)
                return ERR_PTR(-EINVAL);
 
        osc = kzalloc(sizeof(*osc), GFP_KERNEL);
@@ -164,7 +180,7 @@ at91_clk_register_main_osc(struct at91_pmc *pmc,
        init.flags = CLK_IGNORE_UNUSED;
 
        osc->hw.init = &init;
-       osc->pmc = pmc;
+       osc->regmap = regmap;
        osc->irq = irq;
 
        init_waitqueue_head(&osc->wait);
@@ -177,10 +193,10 @@ at91_clk_register_main_osc(struct at91_pmc *pmc,
        }
 
        if (bypass)
-               pmc_write(pmc, AT91_CKGR_MOR,
-                         (pmc_read(pmc, AT91_CKGR_MOR) &
-                          ~(MOR_KEY_MASK | AT91_PMC_MOSCEN)) |
-                         AT91_PMC_OSCBYPASS | AT91_PMC_KEY);
+               regmap_update_bits(regmap,
+                                  AT91_CKGR_MOR, MOR_KEY_MASK |
+                                  AT91_PMC_MOSCEN,
+                                  AT91_PMC_OSCBYPASS | AT91_PMC_KEY);
 
        clk = clk_register(NULL, &osc->hw);
        if (IS_ERR(clk)) {
@@ -191,29 +207,35 @@ at91_clk_register_main_osc(struct at91_pmc *pmc,
        return clk;
 }
 
-void __init of_at91rm9200_clk_main_osc_setup(struct device_node *np,
-                                            struct at91_pmc *pmc)
+static void __init of_at91rm9200_clk_main_osc_setup(struct device_node *np)
 {
        struct clk *clk;
        unsigned int irq;
        const char *name = np->name;
        const char *parent_name;
+       struct regmap *regmap;
        bool bypass;
 
        of_property_read_string(np, "clock-output-names", &name);
        bypass = of_property_read_bool(np, "atmel,osc-bypass");
        parent_name = of_clk_get_parent_name(np, 0);
 
+       regmap = syscon_node_to_regmap(of_get_parent(np));
+       if (IS_ERR(regmap))
+               return;
+
        irq = irq_of_parse_and_map(np, 0);
        if (!irq)
                return;
 
-       clk = at91_clk_register_main_osc(pmc, irq, name, parent_name, bypass);
+       clk = at91_clk_register_main_osc(regmap, irq, name, parent_name, bypass);
        if (IS_ERR(clk))
                return;
 
        of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }
+CLK_OF_DECLARE(at91rm9200_clk_main_osc, "atmel,at91rm9200-clk-main-osc",
+              of_at91rm9200_clk_main_osc_setup);
 
 static irqreturn_t clk_main_rc_osc_irq_handler(int irq, void *dev_id)
 {
@@ -225,23 +247,32 @@ static irqreturn_t clk_main_rc_osc_irq_handler(int irq, void *dev_id)
        return IRQ_HANDLED;
 }
 
+static bool clk_main_rc_osc_ready(struct regmap *regmap)
+{
+       unsigned int status;
+
+       regmap_read(regmap, AT91_PMC_SR, &status);
+
+       return status & AT91_PMC_MOSCRCS;
+}
+
 static int clk_main_rc_osc_prepare(struct clk_hw *hw)
 {
        struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw);
-       struct at91_pmc *pmc = osc->pmc;
-       u32 tmp;
+       struct regmap *regmap = osc->regmap;
+       unsigned int mor;
 
-       tmp = pmc_read(pmc, AT91_CKGR_MOR) & ~MOR_KEY_MASK;
+       regmap_read(regmap, AT91_CKGR_MOR, &mor);
 
-       if (!(tmp & AT91_PMC_MOSCRCEN)) {
-               tmp |= AT91_PMC_MOSCRCEN | AT91_PMC_KEY;
-               pmc_write(pmc, AT91_CKGR_MOR, tmp);
-       }
+       if (!(mor & AT91_PMC_MOSCRCEN))
+               regmap_update_bits(regmap, AT91_CKGR_MOR,
+                                  MOR_KEY_MASK | AT91_PMC_MOSCRCEN,
+                                  AT91_PMC_MOSCRCEN | AT91_PMC_KEY);
 
-       while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCRCS)) {
+       while (!clk_main_rc_osc_ready(regmap)) {
                enable_irq(osc->irq);
                wait_event(osc->wait,
-                          pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCRCS);
+                          clk_main_rc_osc_ready(regmap));
        }
 
        return 0;
@@ -250,23 +281,28 @@ static int clk_main_rc_osc_prepare(struct clk_hw *hw)
 static void clk_main_rc_osc_unprepare(struct clk_hw *hw)
 {
        struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw);
-       struct at91_pmc *pmc = osc->pmc;
-       u32 tmp = pmc_read(pmc, AT91_CKGR_MOR);
+       struct regmap *regmap = osc->regmap;
+       unsigned int mor;
 
-       if (!(tmp & AT91_PMC_MOSCRCEN))
+       regmap_read(regmap, AT91_CKGR_MOR, &mor);
+
+       if (!(mor & AT91_PMC_MOSCRCEN))
                return;
 
-       tmp &= ~(MOR_KEY_MASK | AT91_PMC_MOSCRCEN);
-       pmc_write(pmc, AT91_CKGR_MOR, tmp | AT91_PMC_KEY);
+       regmap_update_bits(regmap, AT91_CKGR_MOR,
+                          MOR_KEY_MASK | AT91_PMC_MOSCRCEN, AT91_PMC_KEY);
 }
 
 static int clk_main_rc_osc_is_prepared(struct clk_hw *hw)
 {
        struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw);
-       struct at91_pmc *pmc = osc->pmc;
+       struct regmap *regmap = osc->regmap;
+       unsigned int mor, status;
+
+       regmap_read(regmap, AT91_CKGR_MOR, &mor);
+       regmap_read(regmap, AT91_PMC_SR, &status);
 
-       return !!((pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCRCS) &&
-                 (pmc_read(pmc, AT91_CKGR_MOR) & AT91_PMC_MOSCRCEN));
+       return (mor & AT91_PMC_MOSCRCEN) && (status & AT91_PMC_MOSCRCS);
 }
 
 static unsigned long clk_main_rc_osc_recalc_rate(struct clk_hw *hw,
@@ -294,7 +330,7 @@ static const struct clk_ops main_rc_osc_ops = {
 };
 
 static struct clk * __init
-at91_clk_register_main_rc_osc(struct at91_pmc *pmc,
+at91_clk_register_main_rc_osc(struct regmap *regmap,
                              unsigned int irq,
                              const char *name,
                              u32 frequency, u32 accuracy)
@@ -304,7 +340,7 @@ at91_clk_register_main_rc_osc(struct at91_pmc *pmc,
        struct clk *clk = NULL;
        struct clk_init_data init;
 
-       if (!pmc || !irq || !name || !frequency)
+       if (!name || !frequency)
                return ERR_PTR(-EINVAL);
 
        osc = kzalloc(sizeof(*osc), GFP_KERNEL);
@@ -318,7 +354,7 @@ at91_clk_register_main_rc_osc(struct at91_pmc *pmc,
        init.flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED;
 
        osc->hw.init = &init;
-       osc->pmc = pmc;
+       osc->regmap = regmap;
        osc->irq = irq;
        osc->frequency = frequency;
        osc->accuracy = accuracy;
@@ -339,14 +375,14 @@ at91_clk_register_main_rc_osc(struct at91_pmc *pmc,
        return clk;
 }
 
-void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np,
-                                               struct at91_pmc *pmc)
+static void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np)
 {
        struct clk *clk;
        unsigned int irq;
        u32 frequency = 0;
        u32 accuracy = 0;
        const char *name = np->name;
+       struct regmap *regmap;
 
        of_property_read_string(np, "clock-output-names", &name);
        of_property_read_u32(np, "clock-frequency", &frequency);
@@ -356,25 +392,31 @@ void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np,
        if (!irq)
                return;
 
-       clk = at91_clk_register_main_rc_osc(pmc, irq, name, frequency,
+       regmap = syscon_node_to_regmap(of_get_parent(np));
+       if (IS_ERR(regmap))
+               return;
+
+       clk = at91_clk_register_main_rc_osc(regmap, irq, name, frequency,
                                            accuracy);
        if (IS_ERR(clk))
                return;
 
        of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }
+CLK_OF_DECLARE(at91sam9x5_clk_main_rc_osc, "atmel,at91sam9x5-clk-main-rc-osc",
+              of_at91sam9x5_clk_main_rc_osc_setup);
 
 
-static int clk_main_probe_frequency(struct at91_pmc *pmc)
+static int clk_main_probe_frequency(struct regmap *regmap)
 {
        unsigned long prep_time, timeout;
-       u32 tmp;
+       unsigned int mcfr;
 
        timeout = jiffies + usecs_to_jiffies(MAINFRDY_TIMEOUT);
        do {
                prep_time = jiffies;
-               tmp = pmc_read(pmc, AT91_CKGR_MCFR);
-               if (tmp & AT91_PMC_MAINRDY)
+               regmap_read(regmap, AT91_CKGR_MCFR, &mcfr);
+               if (mcfr & AT91_PMC_MAINRDY)
                        return 0;
                usleep_range(MAINF_LOOP_MIN_WAIT, MAINF_LOOP_MAX_WAIT);
        } while (time_before(prep_time, timeout));
@@ -382,34 +424,37 @@ static int clk_main_probe_frequency(struct at91_pmc *pmc)
        return -ETIMEDOUT;
 }
 
-static unsigned long clk_main_recalc_rate(struct at91_pmc *pmc,
+static unsigned long clk_main_recalc_rate(struct regmap *regmap,
                                          unsigned long parent_rate)
 {
-       u32 tmp;
+       unsigned int mcfr;
 
        if (parent_rate)
                return parent_rate;
 
        pr_warn("Main crystal frequency not set, using approximate value\n");
-       tmp = pmc_read(pmc, AT91_CKGR_MCFR);
-       if (!(tmp & AT91_PMC_MAINRDY))
+       regmap_read(regmap, AT91_CKGR_MCFR, &mcfr);
+       if (!(mcfr & AT91_PMC_MAINRDY))
                return 0;
 
-       return ((tmp & AT91_PMC_MAINF) * SLOW_CLOCK_FREQ) / MAINF_DIV;
+       return ((mcfr & AT91_PMC_MAINF) * SLOW_CLOCK_FREQ) / MAINF_DIV;
 }
 
 static int clk_rm9200_main_prepare(struct clk_hw *hw)
 {
        struct clk_rm9200_main *clkmain = to_clk_rm9200_main(hw);
 
-       return clk_main_probe_frequency(clkmain->pmc);
+       return clk_main_probe_frequency(clkmain->regmap);
 }
 
 static int clk_rm9200_main_is_prepared(struct clk_hw *hw)
 {
        struct clk_rm9200_main *clkmain = to_clk_rm9200_main(hw);
+       unsigned int status;
+
+       regmap_read(clkmain->regmap, AT91_CKGR_MCFR, &status);
 
-       return !!(pmc_read(clkmain->pmc, AT91_CKGR_MCFR) & AT91_PMC_MAINRDY);
+       return status & AT91_PMC_MAINRDY ? 1 : 0;
 }
 
 static unsigned long clk_rm9200_main_recalc_rate(struct clk_hw *hw,
@@ -417,7 +462,7 @@ static unsigned long clk_rm9200_main_recalc_rate(struct clk_hw *hw,
 {
        struct clk_rm9200_main *clkmain = to_clk_rm9200_main(hw);
 
-       return clk_main_recalc_rate(clkmain->pmc, parent_rate);
+       return clk_main_recalc_rate(clkmain->regmap, parent_rate);
 }
 
 static const struct clk_ops rm9200_main_ops = {
@@ -427,7 +472,7 @@ static const struct clk_ops rm9200_main_ops = {
 };
 
 static struct clk * __init
-at91_clk_register_rm9200_main(struct at91_pmc *pmc,
+at91_clk_register_rm9200_main(struct regmap *regmap,
                              const char *name,
                              const char *parent_name)
 {
@@ -435,7 +480,7 @@ at91_clk_register_rm9200_main(struct at91_pmc *pmc,
        struct clk *clk = NULL;
        struct clk_init_data init;
 
-       if (!pmc || !name)
+       if (!name)
                return ERR_PTR(-EINVAL);
 
        if (!parent_name)
@@ -452,7 +497,7 @@ at91_clk_register_rm9200_main(struct at91_pmc *pmc,
        init.flags = 0;
 
        clkmain->hw.init = &init;
-       clkmain->pmc = pmc;
+       clkmain->regmap = regmap;
 
        clk = clk_register(NULL, &clkmain->hw);
        if (IS_ERR(clk))
@@ -461,22 +506,28 @@ at91_clk_register_rm9200_main(struct at91_pmc *pmc,
        return clk;
 }
 
-void __init of_at91rm9200_clk_main_setup(struct device_node *np,
-                                        struct at91_pmc *pmc)
+static void __init of_at91rm9200_clk_main_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_rm9200_main(pmc, name, parent_name);
+       regmap = syscon_node_to_regmap(of_get_parent(np));
+       if (IS_ERR(regmap))
+               return;
+
+       clk = at91_clk_register_rm9200_main(regmap, name, parent_name);
        if (IS_ERR(clk))
                return;
 
        of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }
+CLK_OF_DECLARE(at91rm9200_clk_main, "atmel,at91rm9200-clk-main",
+              of_at91rm9200_clk_main_setup);
 
 static irqreturn_t clk_sam9x5_main_irq_handler(int irq, void *dev_id)
 {
@@ -488,25 +539,34 @@ static irqreturn_t clk_sam9x5_main_irq_handler(int irq, void *dev_id)
        return IRQ_HANDLED;
 }
 
+static inline bool clk_sam9x5_main_ready(struct regmap *regmap)
+{
+       unsigned int status;
+
+       regmap_read(regmap, AT91_PMC_SR, &status);
+
+       return status & AT91_PMC_MOSCSELS ? 1 : 0;
+}
+
 static int clk_sam9x5_main_prepare(struct clk_hw *hw)
 {
        struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw);
-       struct at91_pmc *pmc = clkmain->pmc;
+       struct regmap *regmap = clkmain->regmap;
 
-       while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS)) {
+       while (!clk_sam9x5_main_ready(regmap)) {
                enable_irq(clkmain->irq);
                wait_event(clkmain->wait,
-                          pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS);
+                          clk_sam9x5_main_ready(regmap));
        }
 
-       return clk_main_probe_frequency(pmc);
+       return clk_main_probe_frequency(regmap);
 }
 
 static int clk_sam9x5_main_is_prepared(struct clk_hw *hw)
 {
        struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw);
 
-       return !!(pmc_read(clkmain->pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS);
+       return clk_sam9x5_main_ready(clkmain->regmap);
 }
 
 static unsigned long clk_sam9x5_main_recalc_rate(struct clk_hw *hw,
@@ -514,29 +574,30 @@ static unsigned long clk_sam9x5_main_recalc_rate(struct clk_hw *hw,
 {
        struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw);
 
-       return clk_main_recalc_rate(clkmain->pmc, parent_rate);
+       return clk_main_recalc_rate(clkmain->regmap, parent_rate);
 }
 
 static int clk_sam9x5_main_set_parent(struct clk_hw *hw, u8 index)
 {
        struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw);
-       struct at91_pmc *pmc = clkmain->pmc;
-       u32 tmp;
+       struct regmap *regmap = clkmain->regmap;
+       unsigned int tmp;
 
        if (index > 1)
                return -EINVAL;
 
-       tmp = pmc_read(pmc, AT91_CKGR_MOR) & ~MOR_KEY_MASK;
+       regmap_read(regmap, AT91_CKGR_MOR, &tmp);
+       tmp &= ~MOR_KEY_MASK;
 
        if (index && !(tmp & AT91_PMC_MOSCSEL))
-               pmc_write(pmc, AT91_CKGR_MOR, tmp | AT91_PMC_MOSCSEL);
+               regmap_write(regmap, AT91_CKGR_MOR, tmp | AT91_PMC_MOSCSEL);
        else if (!index && (tmp & AT91_PMC_MOSCSEL))
-               pmc_write(pmc, AT91_CKGR_MOR, tmp & ~AT91_PMC_MOSCSEL);
+               regmap_write(regmap, AT91_CKGR_MOR, tmp & ~AT91_PMC_MOSCSEL);
 
-       while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS)) {
+       while (!clk_sam9x5_main_ready(regmap)) {
                enable_irq(clkmain->irq);
                wait_event(clkmain->wait,
-                          pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS);
+                          clk_sam9x5_main_ready(regmap));
        }
 
        return 0;
@@ -545,8 +606,11 @@ static int clk_sam9x5_main_set_parent(struct clk_hw *hw, u8 index)
 static u8 clk_sam9x5_main_get_parent(struct clk_hw *hw)
 {
        struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw);
+       unsigned int status;
 
-       return !!(pmc_read(clkmain->pmc, AT91_CKGR_MOR) & AT91_PMC_MOSCEN);
+       regmap_read(clkmain->regmap, AT91_CKGR_MOR, &status);
+
+       return status & AT91_PMC_MOSCEN ? 1 : 0;
 }
 
 static const struct clk_ops sam9x5_main_ops = {
@@ -558,7 +622,7 @@ static const struct clk_ops sam9x5_main_ops = {
 };
 
 static struct clk * __init
-at91_clk_register_sam9x5_main(struct at91_pmc *pmc,
+at91_clk_register_sam9x5_main(struct regmap *regmap,
                              unsigned int irq,
                              const char *name,
                              const char **parent_names,
@@ -568,8 +632,9 @@ at91_clk_register_sam9x5_main(struct at91_pmc *pmc,
        struct clk_sam9x5_main *clkmain;
        struct clk *clk = NULL;
        struct clk_init_data init;
+       unsigned int status;
 
-       if (!pmc || !irq || !name)
+       if (!name)
                return ERR_PTR(-EINVAL);
 
        if (!parent_names || !num_parents)
@@ -586,10 +651,10 @@ at91_clk_register_sam9x5_main(struct at91_pmc *pmc,
        init.flags = CLK_SET_PARENT_GATE;
 
        clkmain->hw.init = &init;
-       clkmain->pmc = pmc;
+       clkmain->regmap = regmap;
        clkmain->irq = irq;
-       clkmain->parent = !!(pmc_read(clkmain->pmc, AT91_CKGR_MOR) &
-                            AT91_PMC_MOSCEN);
+       regmap_read(clkmain->regmap, AT91_CKGR_MOR, &status);
+       clkmain->parent = status & AT91_PMC_MOSCEN ? 1 : 0;
        init_waitqueue_head(&clkmain->wait);
        irq_set_status_flags(clkmain->irq, IRQ_NOAUTOEN);
        ret = request_irq(clkmain->irq, clk_sam9x5_main_irq_handler,
@@ -606,20 +671,23 @@ at91_clk_register_sam9x5_main(struct at91_pmc *pmc,
        return clk;
 }
 
-void __init of_at91sam9x5_clk_main_setup(struct device_node *np,
-                                        struct at91_pmc *pmc)
+static void __init of_at91sam9x5_clk_main_setup(struct device_node *np)
 {
        struct clk *clk;
        const char *parent_names[2];
        int num_parents;
        unsigned int irq;
        const char *name = np->name;
+       struct regmap *regmap;
 
        num_parents = of_clk_get_parent_count(np);
        if (num_parents <= 0 || 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);
 
@@ -627,10 +695,12 @@ void __init of_at91sam9x5_clk_main_setup(struct device_node *np,
        if (!irq)
                return;
 
-       clk = at91_clk_register_sam9x5_main(pmc, irq, name, parent_names,
+       clk = at91_clk_register_sam9x5_main(regmap, irq, 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_main, "atmel,at91sam9x5-clk-main",
+              of_at91sam9x5_clk_main_setup);
index 620ea323356b62145c4f7ef7f1d19511c5832015..8d94ddfc9c725e228f3728c4bf1e43ab133fa813 100644 (file)
@@ -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 @@ out_free_characteristics:
 }
 
 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 @@ out_free_characteristics:
        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);
index 58f3b568e9cb9024beaf0831c9ac3e0237a93d03..33c31d43dd8d65c53d8f4f7f41c4583e5ff5862f 100644 (file)
 #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);
+
index 18b60f4895a68477a74ebe99a8b64542bd7057c9..5f4c6ce628e07eceb3f81d236453c8d7934e5c2d 100644 (file)
@@ -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 @@ out_free_characteristics:
 }
 
 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 @@ out_free_characteristics:
        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);
index ea226562bb40be4f4d1d311a00df124cd9ea777a..f43e93738a992360024c5345765e43e9e6d9c6ec 100644 (file)
@@ -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"
 
 
 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);
index 14b270b85fec277a6fdea1ad0df260eeee95f27b..78814ba448c4848b471aaa59456377a34eace990 100644 (file)
@@ -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);
index 6f99a530ead6002d916ef67a42620ced1836d1fa..1f76113db889894df0abbba705576b734bbc6e64 100644 (file)
@@ -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);
index a7f8501cfa056222a103c1e0f05a442521f68eae..0f6e8d67e630056022a29a0d9be437c8d92f1fa6 100644 (file)
@@ -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);
index 3f5314344286e3335ec77f9c02360cb75c19cb93..0593adf1bf4b236045f54018b3fd7bcdc7ad70a8 100644 (file)
@@ -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);
index 8ab8502778a282bac38b56ce9ecb7cd92c8962e2..617e24f6ef76b19605cbbef4244ecd9a00afc21a 100644 (file)
@@ -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);
index ca561e90a60f48884d801bc1b81c61612a4954df..58a310e5768c9594933f04ee712e86465656f09e 100644 (file)
@@ -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);
index 481146029b2ed5d59c34c7ae30b342a1b0ece0a9..295b17b9c6893d37af9819c3777ea0ffe0e0cee2 100644 (file)
@@ -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 @@ out_free_pmc:
        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)
index e1fc0b0e1d8cfade4a346de4b18d348636c9203f..e160cb640e4aae43e865e3399200adbbe7d2841c 100644 (file)
@@ -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_ */