return bestdiv;
}
+int divider_determine_rate(struct clk_hw *hw, struct clk_rate_request *req,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags)
+{
+ int div;
+
+ div = clk_divider_bestdiv(hw, req->best_parent_hw, req->rate,
+ &req->best_parent_rate, table, width, flags);
+
+ req->rate = DIV_ROUND_UP_ULL((u64)req->best_parent_rate, div);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(divider_determine_rate);
+
+int divider_ro_determine_rate(struct clk_hw *hw, struct clk_rate_request *req,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags, unsigned int val)
+{
+ int div;
+
+ div = _get_div(table, val, flags, width);
+
+ /* Even a read-only clock can propagate a rate change */
+ if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
+ if (!req->best_parent_hw)
+ return -EINVAL;
+
+ req->best_parent_rate = clk_hw_round_rate(req->best_parent_hw,
+ req->rate * div);
+ }
+
+ req->rate = DIV_ROUND_UP_ULL((u64)req->best_parent_rate, div);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(divider_ro_determine_rate);
+
long divider_round_rate_parent(struct clk_hw *hw, struct clk_hw *parent,
unsigned long rate, unsigned long *prate,
const struct clk_div_table *table,
u8 width, unsigned long flags)
{
- int div;
+ struct clk_rate_request req = {
+ .rate = rate,
+ .best_parent_rate = *prate,
+ .best_parent_hw = parent,
+ };
+ int ret;
- div = clk_divider_bestdiv(hw, parent, rate, prate, table, width, flags);
+ ret = divider_determine_rate(hw, &req, table, width, flags);
+ if (ret)
+ return ret;
- return DIV_ROUND_UP_ULL((u64)*prate, div);
+ *prate = req.best_parent_rate;
+
+ return req.rate;
}
EXPORT_SYMBOL_GPL(divider_round_rate_parent);
const struct clk_div_table *table, u8 width,
unsigned long flags, unsigned int val)
{
- int div;
-
- div = _get_div(table, val, flags, width);
+ struct clk_rate_request req = {
+ .rate = rate,
+ .best_parent_rate = *prate,
+ .best_parent_hw = parent,
+ };
+ int ret;
- /* Even a read-only clock can propagate a rate change */
- if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
- if (!parent)
- return -EINVAL;
+ ret = divider_ro_determine_rate(hw, &req, table, width, flags, val);
+ if (ret)
+ return ret;
- *prate = clk_hw_round_rate(parent, rate * div);
- }
+ *prate = req.best_parent_rate;
- return DIV_ROUND_UP_ULL((u64)*prate, div);
+ return req.rate;
}
EXPORT_SYMBOL_GPL(divider_ro_round_rate_parent);
-
static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
unsigned long rate, unsigned long *prate,
const struct clk_div_table *table, u8 width,
unsigned long flags, unsigned int val);
+int divider_determine_rate(struct clk_hw *hw, struct clk_rate_request *req,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags);
+int divider_ro_determine_rate(struct clk_hw *hw, struct clk_rate_request *req,
+ const struct clk_div_table *table, u8 width,
+ unsigned long flags, unsigned int val);
int divider_get_val(unsigned long rate, unsigned long parent_rate,
const struct clk_div_table *table, u8 width,
unsigned long flags);