Legacy clock data is initialized slightly differently compared to
DT clocks, thus add support for this.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
drivers/clk/ti/clk.c | 3 ++
drivers/clk/ti/clock.h | 2 +
drivers/clk/ti/divider.c | 132 +++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 136 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index 676dbf1..a0475e2 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -214,6 +214,9 @@ struct clk __init *ti_clk_register_clk(struct ti_clk *setup)
case TI_CLK_MUX:
clk = ti_clk_register_mux(setup);
break;
+ case TI_CLK_DIVIDER:
+ clk = ti_clk_register_divider(setup);
+ break;
case TI_CLK_FIXED_FACTOR:
fixed_factor = setup->data;
diff --git a/drivers/clk/ti/clock.h b/drivers/clk/ti/clock.h
index 9430dc6..fe70941 100644
--- a/drivers/clk/ti/clock.h
+++ b/drivers/clk/ti/clock.h
@@ -156,7 +156,9 @@ struct ti_clk_dpll {
struct clk *ti_clk_register_gate(struct ti_clk *setup);
struct clk *ti_clk_register_interface(struct ti_clk *setup);
struct clk *ti_clk_register_mux(struct ti_clk *setup);
+struct clk *ti_clk_register_divider(struct ti_clk *setup);
+struct clk_hw *ti_clk_build_component_div(struct ti_clk_divider *setup);
struct clk_hw *ti_clk_build_component_gate(struct ti_clk_gate *setup);
struct clk_hw *ti_clk_build_component_mux(struct ti_clk_mux *setup);
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
index bff2b5b..6211893 100644
--- a/drivers/clk/ti/divider.c
+++ b/drivers/clk/ti/divider.c
@@ -21,6 +21,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk/ti.h>
+#include "clock.h"
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
@@ -301,6 +302,134 @@ static struct clk *_register_divider(struct device *dev, const char *name,
}
static struct clk_div_table *
+_get_div_table_from_setup(struct ti_clk_divider *setup, u8 *width)
+{
+ int valid_div = 0;
+ struct clk_div_table *table;
+ int i;
+ int div;
+ u32 val;
+ u8 flags;
+
+ if (!setup->num_dividers) {
+ /* Clk divider table not provided, determine min/max divs */
+ flags = setup->flags;
+
+ if (flags & CLKF_INDEX_STARTS_AT_ONE)
+ val = 1;
+ else
+ val = 0;
+
+ div = 1;
+
+ while (div < setup->max_div) {
+ if (flags & CLKF_INDEX_POWER_OF_TWO)
+ div <<= 1;
+ else
+ div++;
+ val++;
+ }
+
+ *width = fls(val);
+
+ return NULL;
+ }
+
+ for (i = 0; i < setup->num_dividers; i++)
+ if (setup->dividers[i])
+ valid_div++;
+
+ table = kzalloc(sizeof(*table) * (valid_div + 1), GFP_KERNEL);
+ if (!table)
+ return ERR_PTR(-ENOMEM);
+
+ valid_div = 0;
+ *width = 0;
+
+ for (i = 0; i < setup->num_dividers; i++)
+ if (setup->dividers[i]) {
+ table[valid_div].div = setup->dividers[i];
+ table[valid_div].val = i;
+ valid_div++;
+ *width = i;
+ }
+
+ *width = fls(*width);
+
+ return table;
+}
+
+struct clk_hw *ti_clk_build_component_div(struct ti_clk_divider *setup)
+{
+ struct clk_divider *div;
+ struct clk_omap_reg *reg;
+
+ if (!setup)
+ return NULL;
+
+ div = kzalloc(sizeof(*div), GFP_KERNEL);
+ if (!div)
+ return ERR_PTR(-ENOMEM);
+
+ reg = (struct clk_omap_reg *)&div->reg;
+ reg->index = setup->module;
+ reg->offset = setup->reg;
+
+ if (setup->flags & CLKF_INDEX_STARTS_AT_ONE)
+ div->flags |= CLK_DIVIDER_ONE_BASED;
+
+ if (setup->flags & CLKF_INDEX_POWER_OF_TWO)
+ div->flags |= CLK_DIVIDER_POWER_OF_TWO;
+
+ div->table = _get_div_table_from_setup(setup, &div->width);
+
+ div->shift = setup->bit_shift;
+
+ return &div->hw;
+}
+
+struct clk *ti_clk_register_divider(struct ti_clk *setup)
+{
+ struct ti_clk_divider *div;
+ struct clk_omap_reg *reg_setup;
+ u32 reg;
+ u8 width;
+ u32 flags = 0;
+ u8 div_flags = 0;
+ struct clk_div_table *table;
+ struct clk *clk;
+
+ div = setup->data;
+
+ reg_setup = (struct clk_omap_reg *)®
+
+ reg_setup->index = div->module;
+ reg_setup->offset = div->reg;
+
+ if (div->flags & CLKF_INDEX_STARTS_AT_ONE)
+ div_flags |= CLK_DIVIDER_ONE_BASED;
+
+ if (div->flags & CLKF_INDEX_POWER_OF_TWO)
+ div_flags |= CLK_DIVIDER_POWER_OF_TWO;
+
+ if (div->flags & CLKF_SET_RATE_PARENT)
+ flags |= CLK_SET_RATE_PARENT;
+
+ table = _get_div_table_from_setup(div, &width);
+ if (IS_ERR(table))
+ return (struct clk *)table;
+
+ clk = _register_divider(NULL, setup->name, div->parent,
+ flags, (void __iomem *)reg, div->bit_shift,
+ width, div_flags, table, NULL);
+
+ if (IS_ERR(clk))
+ kfree(table);
+
+ return clk;
+}
+
+static struct clk_div_table *
__init ti_clk_get_div_table(struct device_node *node)
{
struct clk_div_table *table;
@@ -455,7 +584,8 @@ static void __init of_ti_divider_clk_setup(struct device_node *node)
goto cleanup;
clk = _register_divider(NULL, node->name, parent_name, flags, reg,
- shift, width, clk_divider_flags, table, NULL);
+ shift, width, clk_divider_flags, table,
+ NULL);
if (!IS_ERR(clk)) {
of_clk_add_provider(node, of_clk_src_simple_get, clk);
--
1.7.9.5
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