clk: bcm281xx: initialize CCU structures statically
We know up front how many CCU's we'll support, so there's no need to
allocate their data structures dynamically. Define a macro
KONA_CCU_COMMON() to simplify the initialization of many of the
fields in a ccu_data structure. Pass the address of a statically
defined CCU structure to kona_dt_ccu_setup() rather than having that
function allocate one.
We also know at build time how many clocks a given CCU will provide,
though the number of of them for each CCU is different. Record the
number of clocks we need in the CCU's clk_onecell_data struct
(which is used when we register the CCU with the common clock code
as a clock provider). Rename that struct field "clk_data" (because
"data" alone gets a little confusing).
Use the known clock count to move the allocation of each CCU's
clocks array into ccu_clks_setup() rather than having each CCU's
setup callback function do it.
(The real motivation behind all of this is that we'll be doing some
static initialization of some additional CCU-specific data soon.)
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/bcm/clk-kona.h b/drivers/clk/bcm/clk-kona.h
index 1a7eba4..108c264 100644
--- a/drivers/clk/bcm/clk-kona.h
+++ b/drivers/clk/bcm/clk-kona.h
@@ -85,11 +85,20 @@
bool write_enabled; /* write access is currently enabled */
struct list_head links; /* for ccu_list */
struct device_node *node;
- struct clk_onecell_data data;
+ struct clk_onecell_data clk_data;
const char *name;
u32 range; /* byte range of address space */
};
+/* Initialization for common fields in a Kona ccu_data structure */
+#define KONA_CCU_COMMON(_prefix, _name, _ucase_name) \
+ .name = #_name "_ccu", \
+ .lock = __SPIN_LOCK_UNLOCKED(_name ## _ccu_data.lock), \
+ .links = LIST_HEAD_INIT(_name ## _ccu_data.links), \
+ .clk_data = { \
+ .clk_num = _prefix ## _ ## _ucase_name ## _CCU_CLOCK_COUNT, \
+ }
+
/*
* Gating control and status is managed by a 32-bit gate register.
*
@@ -390,8 +399,11 @@
/* Help functions */
-#define PERI_CLK_SETUP(clks, ccu, id, name) \
- clks[id] = kona_clk_setup(ccu, #name, bcm_clk_peri, &name ## _data)
+#define KONA_CLK_SETUP(_ccu, _type, _name) \
+ kona_clk_setup((_ccu), #_name, bcm_clk_## _type, &_name ## _data)
+
+#define PERI_CLK_SETUP(_ccu, _id, _name) \
+ (_ccu)->clk_data.clks[_id] = KONA_CLK_SETUP((_ccu), peri, _name)
/* Externally visible functions */
@@ -402,7 +414,8 @@
extern struct clk *kona_clk_setup(struct ccu_data *ccu, const char *name,
enum bcm_clk_type type, void *data);
-extern void __init kona_dt_ccu_setup(struct device_node *node,
+extern void __init kona_dt_ccu_setup(struct ccu_data *ccu,
+ struct device_node *node,
int (*ccu_clks_setup)(struct ccu_data *));
extern bool __init kona_ccu_init(struct ccu_data *ccu);