plat/clock.c which has most of usecounting/locking infrastructure will
be used only for OMAP1 until that is moved to use COMMON clk.
reuse most of what plat/clock.h has while we move to common clk, and
move most of what 'struct clk' was as 'struct clk_hw_omap' which
will then be used to define platform specific parameters.
All usecounting/locking related variables from 'struct clk' are
dropped as they will not be used with 'struct clk_hw_omap'.
Based on the original changes from Mike Turquette.
Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
---
arch/arm/plat-omap/clock.c | 2 +
arch/arm/plat-omap/include/plat/clock.h | 69 +++++++++++++++++++++++++++++++
2 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 62ec5c4..d311b7c 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -10,6 +10,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#ifndef CONFIG_COMMON_CLK
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/list.h>
@@ -567,3 +568,4 @@ err_out:
late_initcall(clk_debugfs_init);
#endif /* defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) */
+#endif /* CONFIG_COMMON_CLK */
diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h
index d0ef57c..741275d 100644
--- a/arch/arm/plat-omap/include/plat/clock.h
+++ b/arch/arm/plat-omap/include/plat/clock.h
@@ -15,6 +15,14 @@
#include <linux/list.h>
+#ifdef CONFIG_COMMON_CLK
+#include <linux/clk-provider.h>
+
+struct clockdomain;
+#define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)
+
+#else
+
struct module;
struct clk;
struct clockdomain;
@@ -47,6 +55,7 @@ struct clkops {
void (*allow_idle)(struct clk *);
void (*deny_idle)(struct clk *);
};
+#endif /* CONFIG_COMMON_CLK */
#ifdef CONFIG_ARCH_OMAP2PLUS
@@ -192,6 +201,65 @@ struct dpll_data {
#define INVERT_ENABLE (1 << 4) /* 0 enables, 1 disables */
#define CLOCK_CLKOUTX2 (1 << 5)
+#ifdef CONFIG_COMMON_CLK
+/**
+ * struct clk_hw_omap - OMAP struct clk
+ * @node: list_head connecting this clock into the full clock list
+ * @enable_reg: register to write to enable the clock (see @enable_bit)
+ * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
+ * @flags: see "struct clk.flags possibilities" above
+ * @clksel_reg: for clksel clks, register va containing src/divisor select
+ * @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
+ * @clksel: for clksel clks, pointer to struct clksel for this clock
+ * @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
+ * @clkdm_name: clockdomain name that this clock is contained in
+ * @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
+ * @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
+ * @src_offset: bitshift for source selection bitfield (OMAP1 only)
+ *
+ * XXX @rate_offset, @src_offset should probably be removed and OMAP1
+ * clock code converted to use clksel.
+ *
+ */
+
+struct clk_hw_omap_ops;
+
+struct clk_hw_omap {
+ struct clk_hw hw;
+ struct list_head node;
+ unsigned long fixed_rate;
+ u8 fixed_div;
+ void __iomem *enable_reg;
+ u8 enable_bit;
+ u8 flags;
+#ifdef CONFIG_ARCH_OMAP2PLUS
+ void __iomem *clksel_reg;
+ u32 clksel_mask;
+ const struct clksel *clksel;
+ struct dpll_data *dpll_data;
+ const char *clkdm_name;
+ struct clockdomain *clkdm;
+#else
+ u8 rate_offset;
+ u8 src_offset;
+#endif
+ const struct clk_hw_omap_ops *ops;
+};
+
+struct clk_hw_omap_ops {
+ void (*find_idlest)(struct clk_hw_omap *oclk,
+ void __iomem **idlest_reg,
+ u8 *idlest_bit, u8 *idlest_val);
+ void (*find_companion)(struct clk_hw_omap *oclk,
+ void __iomem **other_reg,
+ u8 *other_bit);
+ void (*allow_idle)(struct clk_hw_omap *oclk);
+ void (*deny_idle)(struct clk_hw_omap *oclk);
+};
+
+unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
+ unsigned long parent_rate);
+#else
/**
* struct clk - OMAP struct clk
* @node: list_head connecting this clock into the full clock list
@@ -303,4 +371,5 @@ extern const struct clkops clkops_null;
extern struct clk dummy_ck;
+#endif /* CONFIG_COMMON_CLK */
#endif
--
1.7.1
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