Move the osc_clk clock functions from clock2xxx.c to
mach-omap2/clkt2xxx_osc. This is intended to make the clock code
easier to understand, since all of the functions needed to manage the
osc_clk are now located in their own file, rather than being mixed
with other, unrelated functions.
Clock debugging is also now more finely-grained, since the DEBUG
macro can now be defined for osc_clk clocks alone. This
should reduce unnecessary console noise when debugging.
Also, if at some future point the mach-omap2/ directory is split
into OMAP2/3/4 variants, this clkt file can be placed in the mach-omap2xxx/
directory, rather than shared with other chip types that don't use this
clock type.
Thanks to Alexander Shishkin <virtuoso@xxxxxxxxx> for his comments to
improve the patch description.
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Cc: Alexander Shishkin <virtuoso@xxxxxxxxx>
---
arch/arm/mach-omap2/Makefile | 2 +
arch/arm/mach-omap2/clkt2xxx_osc.c | 62 ++++++++++++++++++++++++++++++++++++
arch/arm/mach-omap2/clock2xxx.c | 34 +-------------------
arch/arm/mach-omap2/clock2xxx.h | 1 +
4 files changed, 66 insertions(+), 33 deletions(-)
create mode 100644 arch/arm/mach-omap2/clkt2xxx_osc.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 825c303..51178bf 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -13,7 +13,7 @@ clock-common = clock.o clock_common_data.o \
clkt_clksel.o
clock-omap2xxx = clkt2xxx_dpllcore.o \
clkt2xxx_virt_prcm_set.o \
- clkt2xxx_apll.o
+ clkt2xxx_apll.o clkt2xxx_osc.o
obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(prcm-common) $(clock-common) \
$(clock-omap2xxx)
diff --git a/arch/arm/mach-omap2/clkt2xxx_osc.c b/arch/arm/mach-omap2/clkt2xxx_osc.c
new file mode 100644
index 0000000..2167be8
--- /dev/null
+++ b/arch/arm/mach-omap2/clkt2xxx_osc.c
@@ -0,0 +1,62 @@
+/*
+ * OMAP2xxx osc_clk-specific clock code
+ *
+ * Copyright (C) 2005-2008 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Contacts:
+ * Richard Woodruff <r-woodruff2@xxxxxx>
+ * Paul Walmsley
+ *
+ * Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
+ * Gordon McNutt and RidgeRun, Inc.
+ *
+ * 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.
+ */
+#undef DEBUG
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/clock.h>
+
+#include "clock.h"
+#include "clock2xxx.h"
+#include "prm.h"
+#include "prm-regbits-24xx.h"
+
+static int omap2_enable_osc_ck(struct clk *clk)
+{
+ u32 pcc;
+
+ pcc = __raw_readl(prcm_clksrc_ctrl);
+
+ __raw_writel(pcc & ~OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
+
+ return 0;
+}
+
+static void omap2_disable_osc_ck(struct clk *clk)
+{
+ u32 pcc;
+
+ pcc = __raw_readl(prcm_clksrc_ctrl);
+
+ __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
+}
+
+const struct clkops clkops_oscck = {
+ .enable = omap2_enable_osc_ck,
+ .disable = omap2_disable_osc_ck,
+};
+
+unsigned long omap2_osc_clk_recalc(struct clk *clk)
+{
+ return omap2xxx_get_apll_clkin() * omap2xxx_get_sysclkdiv();
+}
+
diff --git a/arch/arm/mach-omap2/clock2xxx.c b/arch/arm/mach-omap2/clock2xxx.c
index 88077e7..62c3b02 100644
--- a/arch/arm/mach-omap2/clock2xxx.c
+++ b/arch/arm/mach-omap2/clock2xxx.c
@@ -79,31 +79,6 @@ const struct clkops clkops_omap2430_i2chs_wait = {
.find_companion = omap2_clk_dflt_find_companion,
};
-static int omap2_enable_osc_ck(struct clk *clk)
-{
- u32 pcc;
-
- pcc = __raw_readl(prcm_clksrc_ctrl);
-
- __raw_writel(pcc & ~OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
-
- return 0;
-}
-
-static void omap2_disable_osc_ck(struct clk *clk)
-{
- u32 pcc;
-
- pcc = __raw_readl(prcm_clksrc_ctrl);
-
- __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
-}
-
-const struct clkops clkops_oscck = {
- .enable = omap2_enable_osc_ck,
- .disable = omap2_disable_osc_ck,
-};
-
#ifdef OLD_CK
/* Recalculate SYST_CLK */
static void omap2_sys_clk_recalc(struct clk *clk)
@@ -116,7 +91,7 @@ static void omap2_sys_clk_recalc(struct clk *clk)
}
#endif /* OLD_CK */
-static u32 omap2_get_sysclkdiv(void)
+u32 omap2xxx_get_sysclkdiv(void)
{
u32 div;
@@ -127,14 +102,9 @@ static u32 omap2_get_sysclkdiv(void)
return div;
}
-unsigned long omap2_osc_clk_recalc(struct clk *clk)
-{
- return omap2xxx_get_apll_clkin() * omap2_get_sysclkdiv();
-}
-
unsigned long omap2_sys_clk_recalc(struct clk *clk)
{
- return clk->parent->rate / omap2_get_sysclkdiv();
+ return clk->parent->rate / omap2xxx_get_sysclkdiv();
}
/*
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index 3f1672e..3b0610d 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -18,6 +18,7 @@ unsigned long omap2_dpllcore_recalc(struct clk *clk);
int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate);
unsigned long omap2xxx_clk_get_core_rate(struct clk *clk);
u32 omap2xxx_get_apll_clkin(void);
+u32 omap2xxx_get_sysclkdiv(void);
/* REVISIT: These should be set dynamically for CONFIG_MULTI_OMAP2 */
#ifdef CONFIG_ARCH_OMAP2420
--
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