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-rw-r--r--drivers/clk/sunxi/clk-factors.c101
-rw-r--r--drivers/clk/sunxi/clk-factors.h16
-rw-r--r--drivers/clk/sunxi/clk-sunxi.c95
3 files changed, 113 insertions, 99 deletions
diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c
index 2057c8ac648f..f83ba097126c 100644
--- a/drivers/clk/sunxi/clk-factors.c
+++ b/drivers/clk/sunxi/clk-factors.c
@@ -9,18 +9,18 @@
*/
#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of_address.h>
#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/err.h>
#include <linux/string.h>
-#include <linux/delay.h>
-
#include "clk-factors.h"
/*
- * DOC: basic adjustable factor-based clock that cannot gate
+ * DOC: basic adjustable factor-based clock
*
* Traits of this clock:
* prepare - clk_prepare only ensures that parents are prepared
@@ -32,6 +32,8 @@
#define to_clk_factors(_hw) container_of(_hw, struct clk_factors, hw)
+#define FACTORS_MAX_PARENTS 5
+
#define SETMASK(len, pos) (((1U << (len)) - 1) << (pos))
#define CLRMASK(len, pos) (~(SETMASK(len, pos)))
#define FACTOR_GET(bit, len, reg) (((reg) & SETMASK(len, bit)) >> (bit))
@@ -147,9 +149,96 @@ static int clk_factors_set_rate(struct clk_hw *hw, unsigned long rate,
return 0;
}
-const struct clk_ops clk_factors_ops = {
+static const struct clk_ops clk_factors_ops = {
.determine_rate = clk_factors_determine_rate,
.recalc_rate = clk_factors_recalc_rate,
.round_rate = clk_factors_round_rate,
.set_rate = clk_factors_set_rate,
};
+
+struct clk * __init sunxi_factors_register(struct device_node *node,
+ const struct factors_data *data,
+ spinlock_t *lock)
+{
+ struct clk *clk;
+ struct clk_factors *factors;
+ struct clk_gate *gate = NULL;
+ struct clk_mux *mux = NULL;
+ struct clk_hw *gate_hw = NULL;
+ struct clk_hw *mux_hw = NULL;
+ const char *clk_name = node->name;
+ const char *parents[FACTORS_MAX_PARENTS];
+ void __iomem *reg;
+ int i = 0;
+
+ reg = of_iomap(node, 0);
+
+ /* if we have a mux, we will have >1 parents */
+ while (i < FACTORS_MAX_PARENTS &&
+ (parents[i] = of_clk_get_parent_name(node, i)) != NULL)
+ i++;
+
+ /*
+ * some factor clocks, such as pll5 and pll6, may have multiple
+ * outputs, and have their name designated in factors_data
+ */
+ if (data->name)
+ clk_name = data->name;
+ else
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ factors = kzalloc(sizeof(struct clk_factors), GFP_KERNEL);
+ if (!factors)
+ return NULL;
+
+ /* set up factors properties */
+ factors->reg = reg;
+ factors->config = data->table;
+ factors->get_factors = data->getter;
+ factors->lock = lock;
+
+ /* Add a gate if this factor clock can be gated */
+ if (data->enable) {
+ gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL);
+ if (!gate) {
+ kfree(factors);
+ return NULL;
+ }
+
+ /* set up gate properties */
+ gate->reg = reg;
+ gate->bit_idx = data->enable;
+ gate->lock = factors->lock;
+ gate_hw = &gate->hw;
+ }
+
+ /* Add a mux if this factor clock can be muxed */
+ if (data->mux) {
+ mux = kzalloc(sizeof(struct clk_mux), GFP_KERNEL);
+ if (!mux) {
+ kfree(factors);
+ kfree(gate);
+ return NULL;
+ }
+
+ /* set up gate properties */
+ mux->reg = reg;
+ mux->shift = data->mux;
+ mux->mask = SUNXI_FACTORS_MUX_MASK;
+ mux->lock = factors->lock;
+ mux_hw = &mux->hw;
+ }
+
+ clk = clk_register_composite(NULL, clk_name,
+ parents, i,
+ mux_hw, &clk_mux_ops,
+ &factors->hw, &clk_factors_ops,
+ gate_hw, &clk_gate_ops, 0);
+
+ if (!IS_ERR(clk)) {
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ clk_register_clkdev(clk, clk_name, NULL);
+ }
+
+ return clk;
+}
diff --git a/drivers/clk/sunxi/clk-factors.h b/drivers/clk/sunxi/clk-factors.h
index d2d0efa39379..9913840018d3 100644
--- a/drivers/clk/sunxi/clk-factors.h
+++ b/drivers/clk/sunxi/clk-factors.h
@@ -3,9 +3,12 @@
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
+#include <linux/spinlock.h>
#define SUNXI_FACTORS_NOT_APPLICABLE (0)
+#define SUNXI_FACTORS_MUX_MASK 0x3
+
struct clk_factors_config {
u8 nshift;
u8 nwidth;
@@ -18,6 +21,14 @@ struct clk_factors_config {
u8 n_start;
};
+struct factors_data {
+ int enable;
+ int mux;
+ struct clk_factors_config *table;
+ void (*getter) (u32 *rate, u32 parent_rate, u8 *n, u8 *k, u8 *m, u8 *p);
+ const char *name;
+};
+
struct clk_factors {
struct clk_hw hw;
void __iomem *reg;
@@ -26,5 +37,8 @@ struct clk_factors {
spinlock_t *lock;
};
-extern const struct clk_ops clk_factors_ops;
+struct clk * __init sunxi_factors_register(struct device_node *node,
+ const struct factors_data *data,
+ spinlock_t *lock);
+
#endif
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 2cf6581329a6..393df321010b 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -19,6 +19,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/reset-controller.h>
+#include <linux/spinlock.h>
#include "clk-factors.h"
@@ -440,16 +441,6 @@ EXPORT_SYMBOL(clk_sunxi_mmc_phase_control);
* sunxi_factors_clk_setup() - Setup function for factor clocks
*/
-#define SUNXI_FACTORS_MUX_MASK 0x3
-
-struct factors_data {
- int enable;
- int mux;
- struct clk_factors_config *table;
- void (*getter) (u32 *rate, u32 parent_rate, u8 *n, u8 *k, u8 *m, u8 *p);
- const char *name;
-};
-
static struct clk_factors_config sun4i_pll1_config = {
.nshift = 8,
.nwidth = 5,
@@ -583,89 +574,9 @@ static const struct factors_data sun7i_a20_out_data __initconst = {
};
static struct clk * __init sunxi_factors_clk_setup(struct device_node *node,
- const struct factors_data *data)
+ const struct factors_data *data)
{
- struct clk *clk;
- struct clk_factors *factors;
- struct clk_gate *gate = NULL;
- struct clk_mux *mux = NULL;
- struct clk_hw *gate_hw = NULL;
- struct clk_hw *mux_hw = NULL;
- const char *clk_name = node->name;
- const char *parents[SUNXI_MAX_PARENTS];
- void __iomem *reg;
- int i = 0;
-
- reg = of_iomap(node, 0);
-
- /* if we have a mux, we will have >1 parents */
- while (i < SUNXI_MAX_PARENTS &&
- (parents[i] = of_clk_get_parent_name(node, i)) != NULL)
- i++;
-
- /*
- * some factor clocks, such as pll5 and pll6, may have multiple
- * outputs, and have their name designated in factors_data
- */
- if (data->name)
- clk_name = data->name;
- else
- of_property_read_string(node, "clock-output-names", &clk_name);
-
- factors = kzalloc(sizeof(struct clk_factors), GFP_KERNEL);
- if (!factors)
- return NULL;
-
- /* Add a gate if this factor clock can be gated */
- if (data->enable) {
- gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL);
- if (!gate) {
- kfree(factors);
- return NULL;
- }
-
- /* set up gate properties */
- gate->reg = reg;
- gate->bit_idx = data->enable;
- gate->lock = &clk_lock;
- gate_hw = &gate->hw;
- }
-
- /* Add a mux if this factor clock can be muxed */
- if (data->mux) {
- mux = kzalloc(sizeof(struct clk_mux), GFP_KERNEL);
- if (!mux) {
- kfree(factors);
- kfree(gate);
- return NULL;
- }
-
- /* set up gate properties */
- mux->reg = reg;
- mux->shift = data->mux;
- mux->mask = SUNXI_FACTORS_MUX_MASK;
- mux->lock = &clk_lock;
- mux_hw = &mux->hw;
- }
-
- /* set up factors properties */
- factors->reg = reg;
- factors->config = data->table;
- factors->get_factors = data->getter;
- factors->lock = &clk_lock;
-
- clk = clk_register_composite(NULL, clk_name,
- parents, i,
- mux_hw, &clk_mux_ops,
- &factors->hw, &clk_factors_ops,
- gate_hw, &clk_gate_ops, 0);
-
- if (!IS_ERR(clk)) {
- of_clk_add_provider(node, of_clk_src_simple_get, clk);
- clk_register_clkdev(clk, clk_name, NULL);
- }
-
- return clk;
+ return sunxi_factors_register(node, data, &clk_lock);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-21 08:44:00 +0000