[08/26] ARM: OMAP: clock: Define a function to enable clocks at init

Commit Message

Paul Walmsley Nov. 12, 2012, 11:01 p.m. UTC

Added kerneldoc on the new non-trivial function in this patch, as is local 
policy.  Updated patch follows.

- Paul

From: Rajendra Nayak <[e-mail]>
Date: Fri, 1 Jun 2012 14:02:49 +0530
Subject: [PATCH] ARM: OMAP: clock: Define a function to enable clocks at init

Platform code can use omap2_clk_enable_init_clocks() to enable a
list of clocks that are needed to be enabled at init.

Signed-off-by: Rajendra Nayak <[e-mail]>
Signed-off-by: Mike Turquette <[e-mail]>
[[e-mail]: added kerneldoc to non-trivial new function]
Signed-off-by: Paul Walmsley <[e-mail]>
---
 arch/arm/mach-omap2/clock.c |   21 +++++++++++++++++++++
 arch/arm/mach-omap2/clock.h |    1 +
 2 files changed, 22 insertions(+)

Patch

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index c64203e..744e6eb 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -580,6 +580,27 @@  int omap2_clk_disable_autoidle_all(void)
 	return 0;
 }
 
+/**
+ * omap2_clk_enable_init_clocks - prepare & enable a list of clocks
+ * @clk_names: ptr to an array of strings of clock names to enable
+ * @num_clocks: number of clock names in @clk_names
+ *
+ * Prepare and enable a list of clocks, named by @clk_names.  No
+ * return value. XXX Deprecated; only needed until these clocks are
+ * properly claimed and enabled by the drivers or core code that uses
+ * them.  XXX What code disables & calls clk_put on these clocks?
+ */
+void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks)
+{
+	struct clk *init_clk;
+	int i;
+
+	for (i = 0; i < num_clocks; i++) {
+		init_clk = clk_get(NULL, clk_names[i]);
+		clk_prepare_enable(init_clk);
+	}
+}
+
 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 20a3be7..e669fc8 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -538,6 +538,7 @@  void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
 void omap2_init_clk_hw_omap_clocks(struct clk *clk);
 int omap2_clk_enable_autoidle_all(void);
 int omap2_clk_disable_autoidle_all(void);
+void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks);
 #else
 int omap2_dflt_clk_enable(struct clk *clk);
 void omap2_dflt_clk_disable(struct clk *clk);