From: Domen Puncer <domen.puncer@telargo•com>
To: linuxppc-dev@ozlabs•org
Cc: David Brownell <david-b@pacbell•net>, Sylvain Munaut <tnt@246tNt•com>
Subject: [PATCH 1/3] powerpc clk.h interface for platforms
Date: Wed, 11 Jul 2007 11:32:20 +0200 [thread overview]
Message-ID: <20070711093220.GF4375@moe.telargo.com> (raw)
In-Reply-To: <20070711093113.GE4375@moe.telargo.com>
clk interface for arch/powerpc, platforms should fill
clk_functions.
Signed-off-by: Domen Puncer <domen.puncer@telargo•com>
---
arch/powerpc/kernel/Makefile | 3 -
arch/powerpc/kernel/clock.c | 82 ++++++++++++++++++++++++++++++++++++
include/asm-powerpc/clk_interface.h | 20 ++++++++
3 files changed, 104 insertions(+), 1 deletion(-)
Index: work-powerpc.git/arch/powerpc/kernel/clock.c
===================================================================
--- /dev/null
+++ work-powerpc.git/arch/powerpc/kernel/clock.c
@@ -0,0 +1,82 @@
+/*
+ * Dummy clk implementations for powerpc.
+ * These need to be overridden in platform code.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <asm/clk_interface.h>
+
+struct clk_interface clk_functions;
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+ if (clk_functions.clk_get)
+ return clk_functions.clk_get(dev, id);
+ return ERR_PTR(-ENOSYS);
+}
+EXPORT_SYMBOL(clk_get);
+
+void clk_put(struct clk *clk)
+{
+ if (clk_functions.clk_put)
+ clk_functions.clk_put(clk);
+}
+EXPORT_SYMBOL(clk_put);
+
+int clk_enable(struct clk *clk)
+{
+ if (clk_functions.clk_enable)
+ return clk_functions.clk_enable(clk);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+ if (clk_functions.clk_disable)
+ clk_functions.clk_disable(clk);
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (clk_functions.clk_get_rate)
+ return clk_functions.clk_get_rate(clk);
+ return 0;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk_functions.clk_round_rate)
+ return clk_functions.clk_round_rate(clk, rate);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk_functions.clk_set_rate)
+ return clk_functions.clk_set_rate(clk, rate);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_set_rate);
+
+struct clk *clk_get_parent(struct clk *clk)
+{
+ if (clk_functions.clk_get_parent)
+ return clk_functions.clk_get_parent(clk);
+ return ERR_PTR(-ENOSYS);
+}
+EXPORT_SYMBOL(clk_get_parent);
+
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ if (clk_functions.clk_set_parent)
+ return clk_functions.clk_set_parent(clk, parent);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL(clk_set_parent);
Index: work-powerpc.git/include/asm-powerpc/clk_interface.h
===================================================================
--- /dev/null
+++ work-powerpc.git/include/asm-powerpc/clk_interface.h
@@ -0,0 +1,20 @@
+#ifndef __ASM_POWERPC_CLK_INTERFACE_H
+#define __ASM_POWERPC_CLK_INTERFACE_H
+
+#include <linux/clk.h>
+
+struct clk_interface {
+ struct clk* (*clk_get) (struct device *dev, const char *id);
+ int (*clk_enable) (struct clk *clk);
+ void (*clk_disable) (struct clk *clk);
+ unsigned long (*clk_get_rate) (struct clk *clk);
+ void (*clk_put) (struct clk *clk);
+ long (*clk_round_rate) (struct clk *clk, unsigned long rate);
+ int (*clk_set_rate) (struct clk *clk, unsigned long rate);
+ int (*clk_set_parent) (struct clk *clk, struct clk *parent);
+ struct clk* (*clk_get_parent) (struct clk *clk);
+};
+
+extern struct clk_interface clk_functions;
+
+#endif /* __ASM_POWERPC_CLK_INTERFACE_H */
Index: work-powerpc.git/arch/powerpc/kernel/Makefile
===================================================================
--- work-powerpc.git.orig/arch/powerpc/kernel/Makefile
+++ work-powerpc.git/arch/powerpc/kernel/Makefile
@@ -12,7 +12,8 @@ endif
obj-y := semaphore.o cputable.o ptrace.o syscalls.o \
irq.o align.o signal_32.o pmc.o vdso.o \
- init_task.o process.o systbl.o idle.o
+ init_task.o process.o systbl.o idle.o \
+ clock.o
obj-y += vdso32/
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
signal_64.o ptrace32.o \
next prev parent reply other threads:[~2007-07-11 9:44 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-11 9:31 [PATCH 0/3] clock (clk.h) framework for mpc52xx Domen Puncer
2007-07-11 9:32 ` Domen Puncer [this message]
2007-07-11 10:36 ` [PATCH 1/3] powerpc clk.h interface for platforms Christoph Hellwig
2007-07-11 15:56 ` David Brownell
2007-07-11 16:16 ` Christoph Hellwig
2007-07-11 17:02 ` David Brownell
2007-07-11 20:34 ` Russell King
2007-07-11 20:52 ` David Brownell
2007-07-13 9:12 ` Domen Puncer
2007-08-01 7:28 ` Generic clk.h wrappers? [Was: Re: [PATCH 1/3] powerpc clk.h interface for platforms] Domen Puncer
2007-08-01 12:57 ` Christoph Hellwig
2007-08-02 23:32 ` David Brownell
2007-08-03 8:36 ` Russell King
2007-08-06 6:58 ` [PATCH 1/3] powerpc clk.h interface for platforms Domen Puncer
2007-09-19 3:47 ` Paul Mackerras
2007-09-19 5:11 ` Domen Puncer
2007-09-20 5:07 ` Paul Mackerras
2007-09-20 14:00 ` [PATCH 1/3 v2] " Domen Puncer
2007-07-11 9:33 ` [PATCH 2/3] mpc52xx clk.h interface Domen Puncer
2007-07-11 9:34 ` [PATCH 3/3] mpc52xx_psc_spi: use clk.h subsystem Domen Puncer
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