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authorLinus Torvalds <torvalds@linux-foundation.org>2008-12-30 17:36:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-30 17:36:49 -0800
commit14a3c4ab0e58d143c7928c9eb2f2610205e13bf2 (patch)
tree885992999d7a1a2fd3586efcf32ebcbcbc3a72aa /arch/arm/common
parent1af237a099a3b8ff56aa384f605c6a68af7bf288 (diff)
parent47992cbdaef2f18a47871b2ed01ad27f568c8b73 (diff)
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (407 commits) [ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices [ARM] pxafb: cleanup of the timing checking code [ARM] pxafb: cleanup of the color format manipulation code [ARM] pxafb: add palette format support for LCCR4_PAL_FOR_3 [ARM] pxafb: add support for FBIOPAN_DISPLAY by dma braching [ARM] pxafb: allow pxafb_set_par() to start from arbitrary yoffset [ARM] pxafb: allow video memory size to be configurable [ARM] pxa: add document on the MFP design and how to use it [ARM] sa1100_wdt: don't assume CLOCK_TICK_RATE to be a constant [ARM] rtc-sa1100: don't assume CLOCK_TICK_RATE to be a constant [ARM] pxa/tavorevb: update board support (smartpanel LCD + keypad) [ARM] pxa: Update eseries defconfig [ARM] 5352/1: add w90p910-plat config file [ARM] s3c: S3C options should depend on PLAT_S3C [ARM] mv78xx0: implement GPIO and GPIO interrupt support [ARM] Kirkwood: implement GPIO and GPIO interrupt support [ARM] Orion: share GPIO IRQ handling code [ARM] Orion: share GPIO handling code [ARM] s3c: define __io using the typesafe version [ARM] S3C64XX: Ensure CPU_V6 is selected ...
Diffstat (limited to 'arch/arm/common')
-rw-r--r--arch/arm/common/Kconfig3
-rw-r--r--arch/arm/common/Makefile1
-rw-r--r--arch/arm/common/clkdev.c128
-rw-r--r--arch/arm/common/locomo.c1
-rw-r--r--arch/arm/common/vic.c8
5 files changed, 137 insertions, 4 deletions
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index 86b5e698266..a2cd9beaf37 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -33,3 +33,6 @@ config SHARPSL_PM
config SHARP_SCOOP
bool
+
+config COMMON_CLKDEV
+ bool
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile
index 325e4b6a6af..7cb7961d81c 100644
--- a/arch/arm/common/Makefile
+++ b/arch/arm/common/Makefile
@@ -17,3 +17,4 @@ obj-$(CONFIG_SHARP_SCOOP) += scoop.o
obj-$(CONFIG_ARCH_IXP2000) += uengine.o
obj-$(CONFIG_ARCH_IXP23XX) += uengine.o
obj-$(CONFIG_PCI_HOST_ITE8152) += it8152.o
+obj-$(CONFIG_COMMON_CLKDEV) += clkdev.o
diff --git a/arch/arm/common/clkdev.c b/arch/arm/common/clkdev.c
new file mode 100644
index 00000000000..17a17b49a45
--- /dev/null
+++ b/arch/arm/common/clkdev.c
@@ -0,0 +1,128 @@
+/*
+ * arch/arm/common/clkdev.c
+ *
+ * Copyright (C) 2008 Russell King.
+ *
+ * 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.
+ *
+ * Helper for the clk API to assist looking up a struct clk.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/mutex.h>
+
+#include <asm/clkdev.h>
+#include <mach/clkdev.h>
+
+static LIST_HEAD(clocks);
+static DEFINE_MUTEX(clocks_mutex);
+
+static struct clk *clk_find(const char *dev_id, const char *con_id)
+{
+ struct clk_lookup *p;
+ struct clk *clk = NULL;
+ int match, best = 0;
+
+ list_for_each_entry(p, &clocks, node) {
+ if ((p->dev_id && !dev_id) || (p->con_id && !con_id))
+ continue;
+ match = 0;
+ if (p->dev_id)
+ match += 2 * (strcmp(p->dev_id, dev_id) == 0);
+ if (p->con_id)
+ match += 1 * (strcmp(p->con_id, con_id) == 0);
+ if (match == 0)
+ continue;
+
+ if (match > best) {
+ clk = p->clk;
+ best = match;
+ }
+ }
+ return clk;
+}
+
+struct clk *clk_get(struct device *dev, const char *con_id)
+{
+ const char *dev_id = dev ? dev_name(dev) : NULL;
+ struct clk *clk;
+
+ mutex_lock(&clocks_mutex);
+ clk = clk_find(dev_id, con_id);
+ if (clk && !__clk_get(clk))
+ clk = NULL;
+ mutex_unlock(&clocks_mutex);
+
+ return clk ? clk : ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+void clk_put(struct clk *clk)
+{
+ __clk_put(clk);
+}
+EXPORT_SYMBOL(clk_put);
+
+void clkdev_add(struct clk_lookup *cl)
+{
+ mutex_lock(&clocks_mutex);
+ list_add_tail(&cl->node, &clocks);
+ mutex_unlock(&clocks_mutex);
+}
+EXPORT_SYMBOL(clkdev_add);
+
+#define MAX_DEV_ID 20
+#define MAX_CON_ID 16
+
+struct clk_lookup_alloc {
+ struct clk_lookup cl;
+ char dev_id[MAX_DEV_ID];
+ char con_id[MAX_CON_ID];
+};
+
+struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
+ const char *dev_fmt, ...)
+{
+ struct clk_lookup_alloc *cla;
+
+ cla = kzalloc(sizeof(*cla), GFP_KERNEL);
+ if (!cla)
+ return NULL;
+
+ cla->cl.clk = clk;
+ if (con_id) {
+ strlcpy(cla->con_id, con_id, sizeof(cla->con_id));
+ cla->cl.con_id = cla->con_id;
+ }
+
+ if (dev_fmt) {
+ va_list ap;
+
+ va_start(ap, dev_fmt);
+ vscnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap);
+ cla->cl.dev_id = cla->dev_id;
+ va_end(ap);
+ }
+
+ return &cla->cl;
+}
+EXPORT_SYMBOL(clkdev_alloc);
+
+/*
+ * clkdev_drop - remove a clock dynamically allocated
+ */
+void clkdev_drop(struct clk_lookup *cl)
+{
+ mutex_lock(&clocks_mutex);
+ list_del(&cl->node);
+ mutex_unlock(&clocks_mutex);
+ kfree(cl);
+}
+EXPORT_SYMBOL(clkdev_drop);
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 7c6b4b99a2d..2293f0ce061 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -1108,6 +1108,7 @@ void locomo_frontlight_set(struct locomo_dev *dev, int duty, int vr, int bpwf)
locomo_writel(bpwf | LOCOMO_ALC_EN, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS);
spin_unlock_irqrestore(&lchip->lock, flags);
}
+EXPORT_SYMBOL(locomo_frontlight_set);
/*
* LoCoMo "Register Access Bus."
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index f1e4b8f60ca..ecf0bfbab10 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -69,12 +69,12 @@ void __init vic_init(void __iomem *base, unsigned int irq_start,
/*
* Make sure we clear all existing interrupts
*/
- writel(0, base + VIC_VECT_ADDR);
+ writel(0, base + VIC_PL190_VECT_ADDR);
for (i = 0; i < 19; i++) {
unsigned int value;
- value = readl(base + VIC_VECT_ADDR);
- writel(value, base + VIC_VECT_ADDR);
+ value = readl(base + VIC_PL190_VECT_ADDR);
+ writel(value, base + VIC_PL190_VECT_ADDR);
}
for (i = 0; i < 16; i++) {
@@ -82,7 +82,7 @@ void __init vic_init(void __iomem *base, unsigned int irq_start,
writel(VIC_VECT_CNTL_ENABLE | i, reg);
}
- writel(32, base + VIC_DEF_VECT_ADDR);
+ writel(32, base + VIC_PL190_DEF_VECT_ADDR);
for (i = 0; i < 32; i++) {
unsigned int irq = irq_start + i;