From: Jeremy Kerr <jeremy.kerr@canonical.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/4] clk: Add fixed-rate clock
Date: Fri, 20 May 2011 07:27:49 +0000 [thread overview]
Message-ID: <1305876469.327290.592839707336.3.gpush@pororo> (raw)
In-Reply-To: <1305876469.325655.313573683829.0.gpush@pororo>
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
---
drivers/clk/Kconfig | 4 ++++
drivers/clk/Makefile | 1 +
drivers/clk/clk-fixed.c | 17 +++++++++++++++++
include/linux/clk.h | 14 ++++++++++++++
4 files changed, 36 insertions(+)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index e611e34..0a27963 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -5,3 +5,7 @@ config CLKDEV_LOOKUP
config GENERIC_CLK
bool
+
+config GENERIC_CLK_FIXED
+ bool
+ depends on GENERIC_CLK
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 570d5b9..9a3325a 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -1,3 +1,4 @@
obj-$(CONFIG_CLKDEV_LOOKUP) += clkdev.o
obj-$(CONFIG_GENERIC_CLK) += clk.o
+obj-$(CONFIG_GENERIC_CLK_FIXED) += clk-fixed.o
diff --git a/drivers/clk/clk-fixed.c b/drivers/clk/clk-fixed.c
new file mode 100644
index 0000000..47a27f9
--- /dev/null
+++ b/drivers/clk/clk-fixed.c
@@ -0,0 +1,17 @@
+
+#include <linux/clk.h>
+#include <linux/module.h>
+
+#define to_clk_fixed(c) container_of(c, struct clk_hw_fixed, hw)
+
+static unsigned long clk_fixed_recalc_rate(struct clk_hw *hw)
+{
+ return to_clk_fixed(hw)->rate;
+}
+
+struct clk_hw_ops clk_fixed_ops = {
+ .recalc_rate = clk_fixed_recalc_rate,
+};
+EXPORT_SYMBOL_GPL(clk_fixed_ops);
+
+
diff --git a/include/linux/clk.h b/include/linux/clk.h
index e0969d2..fd62e86 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -110,6 +110,20 @@ int clk_prepare(struct clk *clk);
*/
void clk_unprepare(struct clk *clk);
+/* Base clock implementations. Platform clock implementations can use these
+ * directly, or 'subclass' as approprate */
+
+#ifdef CONFIG_GENERIC_CLK_FIXED
+
+struct clk_hw_fixed {
+ struct clk_hw hw;
+ unsigned long rate;
+};
+
+extern struct clk_hw_ops clk_fixed_ops;
+
+#endif /* CONFIG_GENERIC_CLK_FIXED */
+
#else /* !CONFIG_GENERIC_CLK */
/*
next prev parent reply other threads:[~2011-05-20 7:27 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 7:27 [PATCH 0/4] Add a generic struct clk Jeremy Kerr
2011-05-20 7:27 ` [PATCH 4/4] clk: Add simple gated clock Jeremy Kerr
2011-05-20 11:37 ` Arnd Bergmann
2011-05-20 22:19 ` Rob Herring
2011-05-20 7:27 ` [PATCH 2/4] clk: Implement clk_set_rate Jeremy Kerr
2011-05-20 12:25 ` Sascha Hauer
2011-05-24 7:59 ` Colin Cross
2011-05-25 19:03 ` Sascha Hauer
[not found] ` <1306373867.2875.162.camel@pororo>
2011-05-26 6:54 ` Sascha Hauer
2011-05-30 5:05 ` Mike Frysinger
2011-05-20 7:27 ` Jeremy Kerr [this message]
2011-05-30 5:01 ` [PATCH 3/4] clk: Add fixed-rate clock Mike Frysinger
2011-05-30 5:02 ` Mike Frysinger
2011-05-20 7:27 ` [PATCH 1/4] clk: Add a generic clock infrastructure Jeremy Kerr
2011-05-20 11:59 ` Sascha Hauer
2011-05-20 13:25 ` Thomas Gleixner
2011-05-20 13:36 ` Sascha Hauer
2011-05-23 23:55 ` Colin Cross
2011-05-24 7:02 ` Sascha Hauer
2011-05-24 7:51 ` Colin Cross
2011-05-24 8:38 ` Sascha Hauer
2011-05-25 11:22 ` Richard Zhao
2011-05-25 11:43 ` Thomas Gleixner
2011-05-24 4:30 ` viresh kumar
2011-05-25 10:47 ` Richard Zhao
2011-05-30 5:00 ` Mike Frysinger
2011-05-23 23:12 ` [PATCH 0/4] Add a generic struct clk Colin Cross
2011-05-24 6:26 ` Sascha Hauer
2011-05-24 7:31 ` Colin Cross
2011-05-24 8:09 ` Sascha Hauer
2011-05-24 19:41 ` Colin Cross
2011-05-25 2:32 ` Richard Zhao
2011-05-25 6:23 ` Sascha Hauer
2011-05-25 7:51 ` Thomas Gleixner
2011-05-27 14:39 ` Mark Brown
2011-05-24 17:22 ` Richard Zhao
2011-05-24 17:52 ` Colin Cross
2011-05-25 2:08 ` Richard Zhao
2011-05-30 5:20 ` Mike Frysinger
2011-07-10 9:09 ` Mark Brown
2011-07-10 9:50 ` Russell King - ARM Linux
2011-07-10 10:00 ` Russell King - ARM Linux
2011-07-10 11:27 ` Mark Brown
2011-07-10 11:52 ` Russell King - ARM Linux
2011-07-11 2:49 ` Jeremy Kerr
2011-07-11 3:57 ` Mark Brown
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