Added kerneldoc to the non-trivial new functions added by this patch, as
is local policy. Updated patch below.
- Paul
From: Rajendra Nayak <rnayak@xxxxxx>
Date: Fri, 1 Jun 2012 14:02:49 +0530
Subject: [PATCH] ARM: OMAP: clock: list all clk_hw_omap clks to
enable/disable autoidle
Platforms can call omap2_init_clk_hw_omap_clocks() to register a clock
using clk_hw_omap. omap2_clk_enable_autoidle_all() and
omap2_clk_disable_autoidle_all() can then be used to run through
all the clocks which support autoidle to enable/disable them.
Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
Signed-off-by: Mike Turquette <mturquette@xxxxxx>
[paul@xxxxxxxxx: added kerneldoc on non-trivial new functions]
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
---
arch/arm/mach-omap2/clock.c | 59 +++++++++++++++++++++++++++++++++++++++++++
arch/arm/mach-omap2/clock.h | 3 +++
arch/arm/mach-omap2/io.c | 27 ++++++++++++++++++++
3 files changed, 89 insertions(+)
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 72d7105..c64203e 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -66,6 +66,7 @@ static DEFINE_SPINLOCK(clockfw_lock);
#endif
#ifdef CONFIG_COMMON_CLK
+static LIST_HEAD(clk_hw_omap_clocks);
/*
* Used for clocks that have the same value as the parent clock,
@@ -521,6 +522,64 @@ static int __init omap_clk_setup(char *str)
}
__setup("mpurate=", omap_clk_setup);
+/**
+ * omap2_init_clk_hw_omap_clocks - initialize an OMAP clock
+ * @clk: struct clk * to initialize
+ *
+ * Add an OMAP clock @clk to the internal list of OMAP clocks. Used
+ * temporarily for autoidle handling, until this support can be
+ * integrated into the common clock framework code in some way. No
+ * return value.
+ */
+void omap2_init_clk_hw_omap_clocks(struct clk *clk)
+{
+ struct clk_hw_omap *c;
+
+ if (__clk_get_flags(clk) & CLK_IS_BASIC)
+ return;
+
+ c = to_clk_hw_omap(__clk_get_hw(clk));
+ list_add(&c->node, &clk_hw_omap_clocks);
+}
+
+/**
+ * omap2_clk_enable_autoidle_all - enable autoidle on all OMAP clocks that
+ * support it
+ *
+ * Enable clock autoidle on all OMAP clocks that have allow_idle
+ * function pointers associated with them. This function is intended
+ * to be temporary until support for this is added to the common clock
+ * code. Returns 0.
+ */
+int omap2_clk_enable_autoidle_all(void)
+{
+ struct clk_hw_omap *c;
+
+ list_for_each_entry(c, &clk_hw_omap_clocks, node)
+ if (c->ops && c->ops->allow_idle)
+ c->ops->allow_idle(c);
+ return 0;
+}
+
+/**
+ * omap2_clk_disable_autoidle_all - disable autoidle on all OMAP clocks that
+ * support it
+ *
+ * Disable clock autoidle on all OMAP clocks that have allow_idle
+ * function pointers associated with them. This function is intended
+ * to be temporary until support for this is added to the common clock
+ * code. Returns 0.
+ */
+int omap2_clk_disable_autoidle_all(void)
+{
+ struct clk_hw_omap *c;
+
+ list_for_each_entry(c, &clk_hw_omap_clocks, node)
+ if (c->ops && c->ops->deny_idle)
+ c->ops->deny_idle(c);
+ return 0;
+}
+
const struct clk_hw_omap_ops clkhwops_wait = {
.find_idlest = omap2_clk_dflt_find_idlest,
.find_companion = omap2_clk_dflt_find_companion,
diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 6800d5f..20a3be7 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -535,6 +535,9 @@ void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
void __iomem **idlest_reg,
u8 *idlest_bit, u8 *idlest_val);
+void omap2_init_clk_hw_omap_clocks(struct clk *clk);
+int omap2_clk_enable_autoidle_all(void);
+int omap2_clk_disable_autoidle_all(void);
#else
int omap2_dflt_clk_enable(struct clk *clk);
void omap2_dflt_clk_disable(struct clk *clk);
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index c3472bd..41c6013 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -407,6 +407,9 @@ void __init omap2420_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap2_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
#endif
@@ -436,6 +439,9 @@ void __init omap2430_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap2_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
#endif
@@ -509,6 +515,9 @@ void __init omap3_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap3_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
void __init omap3430_init_late(void)
@@ -516,6 +525,9 @@ void __init omap3430_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap3_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
void __init omap35xx_init_late(void)
@@ -523,6 +535,9 @@ void __init omap35xx_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap3_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
void __init omap3630_init_late(void)
@@ -530,6 +545,9 @@ void __init omap3630_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap3_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
void __init am35xx_init_late(void)
@@ -537,6 +555,9 @@ void __init am35xx_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap3_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
void __init ti81xx_init_late(void)
@@ -544,6 +565,9 @@ void __init ti81xx_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap3_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
#endif
@@ -597,6 +621,9 @@ void __init omap4430_init_late(void)
omap_mux_late_init();
omap2_common_pm_late_init();
omap4_pm_init();
+#ifdef CONFIG_COMMON_CLK
+ omap2_clk_enable_autoidle_all();
+#endif
}
#endif
--
1.7.10.4
--
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