Merge branch 'clks' into devel

9 files changed, 61 insertions, 267 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 29759cd25553..131b7120995e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -271,6 +271,7 @@ config ARCH_EP93XX
         select ARM_VIC
         select GENERIC_GPIO
         select HAVE_CLK
+        select COMMON_CLKDEV
         select ARCH_REQUIRE_GPIOLIB
         help
           This enables support for the Cirrus EP93xx series of CPUs.
diff --git a/arch/arm/mach-aaec2000/Makefile b/arch/arm/mach-aaec2000/Makefile
index a8e462f58bc9..20ec83896c37 100644
--- a/arch/arm/mach-aaec2000/Makefile
+++ b/arch/arm/mach-aaec2000/Makefile
@@ -3,7 +3,7 @@
 #
 
 # Common support (must be linked before board specific support)
-obj-y += core.o clock.o
+obj-y += core.o
 
 # Specific board support
 obj-$(CONFIG_MACH_AAED2000) += aaed2000.o
diff --git a/arch/arm/mach-aaec2000/clock.c b/arch/arm/mach-aaec2000/clock.c
deleted file mode 100644
index e10ee158d720..000000000000
--- a/arch/arm/mach-aaec2000/clock.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- *  linux/arch/arm/mach-aaec2000/clock.c
- *
- *  Copyright (C) 2005 Nicolas Bellido Y Ortega
- *
- *  Based on linux/arch/arm/mach-integrator/clock.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/string.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-
-#include "clock.h"
-
-static LIST_HEAD(clocks);
-static DEFINE_MUTEX(clocks_mutex);
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
-        struct clk *p, *clk = ERR_PTR(-ENOENT);
-
-        mutex_lock(&clocks_mutex);
-        list_for_each_entry(p, &clocks, node) {
-                if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
-                        clk = p;
-                        break;
-                }
-        }
-        mutex_unlock(&clocks_mutex);
-
-        return clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-        module_put(clk->owner);
-}
-EXPORT_SYMBOL(clk_put);
-
-int clk_enable(struct clk *clk)
-{
-        return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_disable);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
-        return clk->rate;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
-        return rate;
-}
-EXPORT_SYMBOL(clk_round_rate);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
-        return 0;
-}
-EXPORT_SYMBOL(clk_set_rate);
-
-int clk_register(struct clk *clk)
-{
-        mutex_lock(&clocks_mutex);
-        list_add(&clk->node, &clocks);
-        mutex_unlock(&clocks_mutex);
-        return 0;
-}
-EXPORT_SYMBOL(clk_register);
-
-void clk_unregister(struct clk *clk)
-{
-        mutex_lock(&clocks_mutex);
-        list_del(&clk->node);
-        mutex_unlock(&clocks_mutex);
-}
-EXPORT_SYMBOL(clk_unregister);
-
-static int __init clk_init(void)
-{
-        return 0;
-}
-arch_initcall(clk_init);
diff --git a/arch/arm/mach-aaec2000/clock.h b/arch/arm/mach-aaec2000/clock.h
deleted file mode 100644
index d4bb74ff613f..000000000000
--- a/arch/arm/mach-aaec2000/clock.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- *  linux/arch/arm/mach-aaec2000/clock.h
- *
- *  Copyright (C) 2005 Nicolas Bellido Y Ortega
- *
- *  Based on linux/arch/arm/mach-integrator/clock.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-struct module;
-
-struct clk {
-        struct list_head        node;
-        unsigned long           rate;
-        struct module           *owner;
-        const char              *name;
-        void                    *data;
-};
-
-int clk_register(struct clk *clk);
-void clk_unregister(struct clk *clk);
diff --git a/arch/arm/mach-aaec2000/core.c b/arch/arm/mach-aaec2000/core.c
index dfb26bc23d1a..50e13965dfed 100644
--- a/arch/arm/mach-aaec2000/core.c
+++ b/arch/arm/mach-aaec2000/core.c
@@ -19,6 +19,7 @@
 #include <linux/interrupt.h>
 #include <linux/timex.h>
 #include <linux/signal.h>
+#include <linux/clk.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -30,7 +31,6 @@
 #include <asm/mach/map.h>
 
 #include "core.h"
-#include "clock.h"
 
 /*
  * Common I/O mapping:
@@ -229,9 +229,28 @@ static struct amba_device *amba_devs[] __initdata = {
         &clcd_device,
 };
 
-static struct clk aaec2000_clcd_clk = {
-        .name = "CLCDCLK",
-};
+void clk_disable(struct clk *clk)
+{
+}
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+        return 0;
+}
+
+int clk_enable(struct clk *clk)
+{
+        return 0;
+}
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+        return dev && strcmp(dev_name(dev), "mb:16") == 0 ? NULL : ERR_PTR(-ENOENT);
+}
+
+void clk_put(struct clk *clk)
+{
+}
 
 void __init aaec2000_set_clcd_plat_data(struct aaec2000_clcd_info *clcd)
 {
@@ -265,8 +284,6 @@ static int __init aaec2000_init(void)
 {
         int i;
 
-        clk_register(&aaec2000_clcd_clk);
-
         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
                 struct amba_device *d = amba_devs[i];
                 amba_device_register(d, &iomem_resource);
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index 8c9f2491dccc..96049283a10a 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -16,11 +16,12 @@
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/io.h>
+
+#include <asm/clkdev.h>
 #include <asm/div64.h>
 #include <mach/hardware.h>
 
 struct clk {
-        char            *name;
         unsigned long   rate;
         int             users;
         u32             enable_reg;
@@ -28,53 +29,33 @@ struct clk {
 };
 
 static struct clk clk_uart = {
-        .name           = "UARTCLK",
         .rate           = 14745600,
 };
-static struct clk clk_pll1 = {
-        .name           = "pll1",
-};
-static struct clk clk_f = {
-        .name           = "fclk",
-};
-static struct clk clk_h = {
-        .name           = "hclk",
-};
-static struct clk clk_p = {
-        .name           = "pclk",
-};
-static struct clk clk_pll2 = {
-        .name           = "pll2",
-};
+static struct clk clk_pll1;
+static struct clk clk_f;
+static struct clk clk_h;
+static struct clk clk_p;
+static struct clk clk_pll2;
 static struct clk clk_usb_host = {
-        .name           = "usb_host",
         .enable_reg     = EP93XX_SYSCON_CLOCK_CONTROL,
         .enable_mask    = EP93XX_SYSCON_CLOCK_USH_EN,
 };
 
-
-static struct clk *clocks[] = {
-        &clk_uart,
-        &clk_pll1,
-        &clk_f,
-        &clk_h,
-        &clk_p,
-        &clk_pll2,
-        &clk_usb_host,
+#define INIT_CK(dev,con,ck)                                     \
+        { .dev_id = dev, .con_id = con, .clk = ck }
+
+static struct clk_lookup clocks[] = {
+        INIT_CK("apb:uart1", NULL, &clk_uart),
+        INIT_CK("apb:uart2", NULL, &clk_uart),
+        INIT_CK("apb:uart3", NULL, &clk_uart),
+        INIT_CK(NULL, "pll1", &clk_pll1),
+        INIT_CK(NULL, "fclk", &clk_f),
+        INIT_CK(NULL, "hclk", &clk_h),
+        INIT_CK(NULL, "pclk", &clk_p),
+        INIT_CK(NULL, "pll2", &clk_pll2),
+        INIT_CK(NULL, "usb_host", &clk_usb_host),
 };
 
-struct clk *clk_get(struct device *dev, const char *id)
-{
-        int i;
-
-        for (i = 0; i < ARRAY_SIZE(clocks); i++) {
-                if (!strcmp(clocks[i]->name, id))
-                        return clocks[i];
-        }
-
-        return ERR_PTR(-ENOENT);
-}
-EXPORT_SYMBOL(clk_get);
 
 int clk_enable(struct clk *clk)
 {
@@ -106,12 +87,6 @@ unsigned long clk_get_rate(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_get_rate);
 
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
-
 
 static char fclk_divisors[] = { 1, 2, 4, 8, 16, 1, 1, 1 };
 static char hclk_divisors[] = { 1, 2, 4, 5, 6, 8, 16, 32 };
@@ -138,6 +113,7 @@ static unsigned long calc_pll_rate(u32 config_word)
 static int __init ep93xx_clock_init(void)
 {
         u32 value;
+        int i;
 
         value = __raw_readl(EP93XX_SYSCON_CLOCK_SET1);
         if (!(value & 0x00800000)) {                    /* PLL1 bypassed?  */
@@ -165,6 +141,8 @@ static int __init ep93xx_clock_init(void)
                 clk_f.rate / 1000000, clk_h.rate / 1000000,
                 clk_p.rate / 1000000);
 
+        for (i = 0; i < ARRAY_SIZE(clocks); i++)
+                clkdev_add(&clocks[i]);
         return 0;
 }
 arch_initcall(ep93xx_clock_init);
diff --git a/arch/arm/mach-ep93xx/include/mach/clkdev.h b/arch/arm/mach-ep93xx/include/mach/clkdev.h
new file mode 100644
index 000000000000..04b37a89801c
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/clkdev.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
diff --git a/arch/arm/mach-lh7a40x/clocks.c b/arch/arm/mach-lh7a40x/clocks.c
index 4fb23ac6b5ac..6182f5410b4d 100644
--- a/arch/arm/mach-lh7a40x/clocks.c
+++ b/arch/arm/mach-lh7a40x/clocks.c
@@ -14,21 +14,14 @@
 #include <linux/err.h>
 
 struct module;
-struct icst525_params;
 
 struct clk {
         struct list_head node;
         unsigned long rate;
         struct module *owner;
         const char *name;
-//      void *data;
-//      const struct icst525_params *params;
-//      void (*setvco)(struct clk *, struct icst525_vco vco);
 };
 
-int clk_register(struct clk *clk);
-void clk_unregister(struct clk *clk);
-
 /* ----- */
 
 #define MAINDIV1(c)     (((c) >>  7) & 0x0f)
@@ -79,31 +72,15 @@ unsigned int pclkfreq_get (void)
 
 /* ----- */
 
-static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
-
 struct clk *clk_get (struct device *dev, const char *id)
 {
-        struct clk *p;
-        struct clk *clk = ERR_PTR(-ENOENT);
-
-        down (&clocks_sem);
-        list_for_each_entry (p, &clocks, node) {
-                if (strcmp (id, p->name) == 0
-                    && try_module_get(p->owner)) {
-                        clk = p;
-                        break;
-                }
-        }
-        up (&clocks_sem);
-
-        return clk;
+        return dev && strcmp(dev_name(dev), "cldc-lh7a40x") == 0
+                 ? NULL : ERR_PTR(-ENOENT);
 }
 EXPORT_SYMBOL(clk_get);
 
 void clk_put (struct clk *clk)
 {
-        module_put(clk->owner);
 }
 EXPORT_SYMBOL(clk_put);
 
@@ -118,20 +95,9 @@ void clk_disable (struct clk *clk)
 }
 EXPORT_SYMBOL(clk_disable);
 
-int clk_use (struct clk *clk)
-{
-        return 0;
-}
-EXPORT_SYMBOL(clk_use);
-
-void clk_unuse (struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_unuse);
-
 unsigned long clk_get_rate (struct clk *clk)
 {
-        return clk->rate;
+        return 0;
 }
 EXPORT_SYMBOL(clk_get_rate);
 
@@ -143,56 +109,6 @@ EXPORT_SYMBOL(clk_round_rate);
 
 int clk_set_rate (struct clk *clk, unsigned long rate)
 {
-        int ret = -EIO;
-        return ret;
+        return -EIO;
 }
 EXPORT_SYMBOL(clk_set_rate);
-
-#if 0
-/*
- * These are fixed clocks.
- */
-static struct clk kmi_clk = {
-        .name   = "KMIREFCLK",
-        .rate   = 24000000,
-};
-
-static struct clk uart_clk = {
-        .name   = "UARTCLK",
-        .rate   = 24000000,
-};
-
-static struct clk mmci_clk = {
-        .name   = "MCLK",
-        .rate   = 33000000,
-};
-#endif
-
-static struct clk clcd_clk = {
-        .name   = "CLCDCLK",
-        .rate   = 0,
-};
-
-int clk_register (struct clk *clk)
-{
-        down (&clocks_sem);
-        list_add (&clk->node, &clocks);
-        up (&clocks_sem);
-        return 0;
-}
-EXPORT_SYMBOL(clk_register);
-
-void clk_unregister (struct clk *clk)
-{
-        down (&clocks_sem);
-        list_del (&clk->node);
-        up (&clocks_sem);
-}
-EXPORT_SYMBOL(clk_unregister);
-
-static int __init clk_init (void)
-{
-        clk_register(&clcd_clk);
-        return 0;
-}
-arch_initcall(clk_init);
diff --git a/arch/arm/mach-netx/fb.c b/arch/arm/mach-netx/fb.c
index 24c79650f9f3..8f1f992f002e 100644
--- a/arch/arm/mach-netx/fb.c
+++ b/arch/arm/mach-netx/fb.c
@@ -22,14 +22,11 @@
 #include <linux/dma-mapping.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/clcd.h>
+#include <linux/err.h>
 
 #include <mach/netx-regs.h>
 #include <mach/hardware.h>
 
-struct clk {};
-
-static struct clk fb_clk;
-
 static struct clcd_panel *netx_panel;
 
 void netx_clcd_enable(struct clcd_fb *fb)
@@ -85,7 +82,7 @@ int clk_enable(struct clk *clk)
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
-        return &fb_clk;
+        return dev && strcmp(dev_name(dev), "fb") == 0 ? NULL : ERR_PTR(-ENOENT);
 }
 
 void clk_put(struct clk *clk)